summaryrefslogtreecommitdiffstats
path: root/plug-ins/gradient-flare/gradient-flare.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:23:22 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 16:23:22 +0000
commite42129241681dde7adae7d20697e7b421682fbb4 (patch)
treeaf1fe815a5e639e68e59fabd8395ec69458b3e5e /plug-ins/gradient-flare/gradient-flare.c
parentInitial commit. (diff)
downloadgimp-e42129241681dde7adae7d20697e7b421682fbb4.tar.xz
gimp-e42129241681dde7adae7d20697e7b421682fbb4.zip
Adding upstream version 2.10.22.upstream/2.10.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plug-ins/gradient-flare/gradient-flare.c')
-rw-r--r--plug-ins/gradient-flare/gradient-flare.c5123
1 files changed, 5123 insertions, 0 deletions
diff --git a/plug-ins/gradient-flare/gradient-flare.c b/plug-ins/gradient-flare/gradient-flare.c
new file mode 100644
index 0000000..731d76e
--- /dev/null
+++ b/plug-ins/gradient-flare/gradient-flare.c
@@ -0,0 +1,5123 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * GFlare plug-in -- lense flare effect by using custom gradients
+ * Copyright (C) 1997 Eiichi Takamori <taka@ma1.sekyou.ne.jp>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ *
+ * A fair proportion of this code was taken from GIMP & Script-fu
+ * copyrighted by Spencer Kimball and Peter Mattis, and from Gradient
+ * Editor copyrighted by Federico Mena Quintero. (See copyright notice
+ * below) Thanks for senior GIMP hackers!!
+ *
+ * GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * Gradient editor module copyight (C) 1996-1997 Federico Mena Quintero
+ * federico@nuclecu.unam.mx
+ */
+
+#include "config.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include <glib/gstdio.h>
+
+#include <glib-object.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "libgimp/stdplugins-intl.h"
+
+/* #define DEBUG */
+
+#ifdef DEBUG
+#define DEBUG_PRINT(X) g_print X
+#else
+#define DEBUG_PRINT(X)
+#endif
+
+#define LUMINOSITY(PIX) (GIMP_RGB_LUMINANCE (PIX[0], PIX[1], PIX[2]) + 0.5)
+
+#define RESPONSE_RESCAN 1
+
+#define PLUG_IN_PROC "plug-in-gflare"
+#define PLUG_IN_BINARY "gradient-flare"
+#define PLUG_IN_ROLE "gimp-gradient-flare"
+
+#define GRADIENT_NAME_MAX 256
+#define GRADIENT_RESOLUTION 360
+
+#define GFLARE_NAME_MAX 256
+#define GFLARE_FILE_HEADER "GIMP GFlare 0.25\n"
+#define SFLARE_NUM 30
+
+#define DLG_PREVIEW_WIDTH 256
+#define DLG_PREVIEW_HEIGHT 256
+#define DLG_PREVIEW_MASK GDK_EXPOSURE_MASK | \
+ GDK_BUTTON_PRESS_MASK
+#define DLG_LISTBOX_WIDTH 80
+#define DLG_LISTBOX_HEIGHT 40
+
+#define ED_PREVIEW_WIDTH 256
+#define ED_PREVIEW_HEIGHT 256
+
+#define GM_PREVIEW_WIDTH 80
+#define GM_PREVIEW_HEIGHT 16
+
+#define SCALE_WIDTH 80
+
+#ifndef OPAQUE
+#define OPAQUE 255
+#endif
+#define GRAY50 128
+
+#define GRADIENT_CACHE_SIZE 32
+
+#define CALC_GLOW 0x01
+#define CALC_RAYS 0x02
+#define CALC_SFLARE 0x04
+
+typedef struct _Preview Preview;
+
+typedef gchar GradientName[GRADIENT_NAME_MAX];
+
+typedef enum
+{
+ GF_NORMAL = 0,
+ GF_ADDITION,
+ GF_OVERLAY,
+ GF_SCREEN,
+ GF_NUM_MODES
+} GFlareMode;
+
+typedef enum
+{
+ GF_CIRCLE = 0,
+ GF_POLYGON,
+ GF_NUM_SHAPES
+} GFlareShape;
+
+typedef struct
+{
+ gchar *name;
+ gchar *filename;
+ gdouble glow_opacity;
+ GFlareMode glow_mode;
+ gdouble rays_opacity;
+ GFlareMode rays_mode;
+ gdouble sflare_opacity;
+ GFlareMode sflare_mode;
+ GradientName glow_radial;
+ GradientName glow_angular;
+ GradientName glow_angular_size;
+ gdouble glow_size;
+ gdouble glow_rotation;
+ gdouble glow_hue;
+ GradientName rays_radial;
+ GradientName rays_angular;
+ GradientName rays_angular_size;
+ gdouble rays_size;
+ gdouble rays_rotation;
+ gdouble rays_hue;
+ gint rays_nspikes;
+ gdouble rays_thickness;
+ GradientName sflare_radial;
+ GradientName sflare_sizefac;
+ GradientName sflare_probability;
+ gdouble sflare_size;
+ gdouble sflare_rotation;
+ gdouble sflare_hue;
+ GFlareShape sflare_shape;
+ gint sflare_nverts;
+ guint32 sflare_seed;
+ gboolean random_seed;
+} GFlare;
+
+typedef struct
+{
+ FILE *fp;
+ gint error;
+} GFlareFile;
+
+
+typedef enum
+{
+ PAGE_SETTINGS,
+ PAGE_SELECTOR,
+ PAGE_GENERAL,
+ PAGE_GLOW,
+ PAGE_RAYS,
+ PAGE_SFLARE
+} PageNum;
+
+
+typedef struct
+{
+ gint init;
+ GFlare *gflare;
+ GtkWidget *shell;
+ Preview *preview;
+ struct
+ {
+ gdouble x0, y0, x1, y1;
+ } pwin;
+ gboolean update_preview;
+ GtkWidget *notebook;
+ GtkWidget *sizeentry;
+ GtkWidget *asupsample_frame;
+ GtkListStore *selector_list;
+ GtkTreeSelection *selection;
+ gint init_params_done;
+} GFlareDialog;
+
+typedef void (* GFlareEditorCallback) (gint updated, gpointer data);
+
+typedef struct
+{
+ gint init;
+ gint run;
+ GFlareEditorCallback callback;
+ gpointer calldata;
+ GFlare *target_gflare;
+ GFlare *gflare;
+ GtkWidget *shell;
+ Preview *preview;
+ GtkWidget *notebook;
+ PageNum cur_page;
+ GtkWidget *polygon_entry;
+ GtkWidget *polygon_toggle;
+ gint init_params_done;
+} GFlareEditor;
+
+typedef struct
+{
+ gdouble x0;
+ gdouble y0;
+ gdouble x1;
+ gdouble y1;
+} CalcBounds;
+
+typedef struct
+{
+ gint init;
+ gint type;
+ GFlare *gflare;
+ gdouble xcenter;
+ gdouble ycenter;
+ gdouble radius;
+ gdouble rotation;
+ gdouble hue;
+ gdouble vangle;
+ gdouble vlength;
+
+ gint glow_opacity;
+ CalcBounds glow_bounds;
+ guchar *glow_radial;
+ guchar *glow_angular;
+ guchar *glow_angular_size;
+ gdouble glow_radius;
+ gdouble glow_rotation;
+
+ gint rays_opacity;
+ CalcBounds rays_bounds;
+ guchar *rays_radial;
+ guchar *rays_angular;
+ guchar *rays_angular_size;
+ gdouble rays_radius;
+ gdouble rays_rotation;
+ gdouble rays_spike_mod;
+ gdouble rays_thinness;
+
+ gint sflare_opacity;
+ GList *sflare_list;
+ guchar *sflare_radial;
+ guchar *sflare_sizefac;
+ guchar *sflare_probability;
+ gdouble sflare_radius;
+ gdouble sflare_rotation;
+ GFlareShape sflare_shape;
+ gdouble sflare_angle;
+ gdouble sflare_factor;
+} CalcParams;
+
+/*
+ * What's the difference between (structure) CalcParams and GFlare ?
+ * well, radius and lengths are actual length for CalcParams where
+ * they are typically 0 to 100 for GFlares, and angles are G_PI based
+ * (radian) for CalcParams where they are degree for GFlares. et cetra.
+ * This is because convenience for dialog processing and for calculating.
+ * these conversion is taken place in calc init routines. see below.
+ */
+
+typedef struct
+{
+ gdouble xcenter;
+ gdouble ycenter;
+ gdouble radius;
+ CalcBounds bounds;
+} CalcSFlare;
+
+typedef struct
+{
+ const Babl *format;
+ gint bpp;
+ gint is_color;
+ gint has_alpha;
+ gint x, y, w, h; /* mask bounds */
+} DrawableInfo;
+
+typedef struct _GradientMenu GradientMenu;
+typedef void (* GradientMenuCallback) (const gchar *gradient_name,
+ gpointer data);
+struct _GradientMenu
+{
+ GtkWidget *preview;
+ GtkWidget *combo;
+ GradientMenuCallback callback;
+ gpointer callback_data;
+ GradientName gradient_name;
+};
+
+typedef gint (* PreviewInitFunc) (Preview *preview,
+ gpointer data);
+typedef void (* PreviewRenderFunc) (Preview *preview,
+ guchar *buffer,
+ gint y,
+ gpointer data);
+typedef void (* PreviewDeinitFunc) (Preview *preview,
+ gpointer data);
+
+struct _Preview
+{
+ GtkWidget *widget;
+ gint width;
+ gint height;
+ PreviewInitFunc init_func;
+ gpointer init_data;
+ PreviewRenderFunc render_func;
+ gpointer render_data;
+ PreviewDeinitFunc deinit_func;
+ gpointer deinit_data;
+ guint timeout_tag;
+ guint idle_tag;
+ gint init_done;
+ gint current_y;
+ gint drawn_y;
+ guchar *buffer;
+ guchar *full_image_buffer;
+};
+
+typedef struct
+{
+ gint tag;
+ gint got_gradients;
+ gint current_y;
+ gint drawn_y;
+ PreviewRenderFunc render_func;
+ guchar *buffer;
+} PreviewIdle;
+
+typedef struct _GradientCacheItem GradientCacheItem;
+
+struct _GradientCacheItem
+{
+ GradientCacheItem *next;
+ GradientCacheItem *prev;
+ GradientName name;
+ guchar values[4 * GRADIENT_RESOLUTION];
+};
+
+typedef struct
+{
+ gint xcenter;
+ gint ycenter;
+ gdouble radius;
+ gdouble rotation;
+ gdouble hue;
+ gdouble vangle;
+ gdouble vlength;
+ gint use_asupsample;
+ gint asupsample_max_depth;
+ gdouble asupsample_threshold;
+ gchar gflare_name[GFLARE_NAME_MAX];
+} PluginValues;
+
+
+typedef void (* QueryFunc) (GtkWidget *,
+ gpointer,
+ gpointer);
+
+/***
+ *** Global Functions Prototypes
+ **/
+
+static void plugin_query (void);
+static void plugin_run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals);
+
+static GFlare * gflare_new_with_default (const gchar *new_name);
+static GFlare * gflare_dup (const GFlare *src,
+ const gchar *new_name);
+static void gflare_copy (GFlare *dest,
+ const GFlare *src);
+static GFlare * gflare_load (const gchar *filename,
+ const gchar *name);
+static void gflare_save (GFlare *gflare);
+static void gflare_name_copy (gchar *dest,
+ const gchar *src);
+
+static gint gflares_list_insert (GFlare *gflare);
+static GFlare * gflares_list_lookup (const gchar *name);
+static gint gflares_list_index (GFlare *gflare);
+static gint gflares_list_remove (GFlare *gflare);
+static void gflares_list_load_all (void);
+static void gflares_list_free_all (void);
+
+static void calc_init_params (GFlare *gflare,
+ gint calc_type,
+ gdouble xcenter,
+ gdouble ycenter,
+ gdouble radius,
+ gdouble rotation,
+ gdouble hue,
+ gdouble vangle,
+ gdouble vlength);
+static gint calc_init_progress (void);
+static void calc_deinit (void);
+static void calc_glow_pix (guchar *dest_pix,
+ gdouble x,
+ gdouble y);
+static void calc_rays_pix (guchar *dest_pix,
+ gdouble x,
+ gdouble y);
+static void calc_sflare_pix (guchar *dest_pix,
+ gdouble x,
+ gdouble y,
+ guchar *src_pix);
+static void calc_gflare_pix (guchar *dest_pix,
+ gdouble x,
+ gdouble y,
+ guchar *src_pix);
+
+static gboolean dlg_run (void);
+static void dlg_preview_calc_window (void);
+static void ed_preview_calc_window (void);
+static GtkWidget * ed_mode_menu_new (GFlareMode *mode_var);
+
+static Preview * preview_new (gint width,
+ gint height,
+ PreviewInitFunc init_func,
+ gpointer init_data,
+ PreviewRenderFunc render_func,
+ gpointer render_data,
+ PreviewDeinitFunc deinit_func,
+ gpointer deinit_data);
+static void preview_free (Preview *preview);
+static void preview_render_start (Preview *preview);
+static void preview_render_end (Preview *preview);
+static void preview_rgba_to_rgb (guchar *dest,
+ gint x,
+ gint y,
+ guchar *src);
+
+static void gradient_menu_init (void);
+static void gradient_menu_rescan (void);
+static GradientMenu * gradient_menu_new (GradientMenuCallback callback,
+ gpointer callback_data,
+ const gchar *default_gradient_name);
+static void gradient_name_copy (gchar *dest,
+ const gchar *src);
+static void gradient_name_encode (gchar *dest,
+ const gchar *src);
+static void gradient_name_decode (gchar *dest,
+ const gchar *src);
+static void gradient_init (void);
+static void gradient_free (void);
+static gchar ** gradient_get_list (gint *num_gradients);
+static void gradient_get_values (const gchar *gradient_name,
+ guchar *values,
+ gint nvalues);
+static void gradient_cache_flush (void);
+
+/* *** INSERT-FILE-END *** */
+
+/**
+*** Variables
+**/
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+ NULL, /* init_proc */
+ NULL, /* quit_proc */
+ plugin_query, /* query_proc */
+ plugin_run, /* run_proc */
+};
+
+PluginValues pvals =
+{
+ 128, /* xcenter */
+ 128, /* ycenter */
+ 100.0, /* radius */
+ 0.0, /* rotation */
+ 0.0, /* hue */
+ 60.0, /* vangle */
+ 400.0, /* vlength */
+ FALSE, /* use_asupsample */
+ 3, /* asupsample_max_depth */
+ 0.2, /* asupsample_threshold */
+ "Default" /* gflare_name */
+};
+
+GFlare default_gflare =
+{
+ NULL, /* name */
+ NULL, /* filename */
+ 100, /* glow_opacity */
+ GF_NORMAL, /* glow_mode */
+ 100, /* rays_opacity */
+ GF_NORMAL, /* rays_mode */
+ 100, /* sflare_opacity */
+ GF_NORMAL, /* sflare_mode */
+ "%red_grad", /* glow_radial */
+ "%white", /* glow_angular */
+ "%white", /* glow_angular_size */
+ 100.0, /* glow_size */
+ 0.0, /* glow_rotation */
+ 0.0, /* glow_hue */
+ "%white_grad",/* rays_radial */
+ "%random", /* rays_angular */
+ "%random", /* rays_angular_size */
+ 100.0, /* rays_size */
+ 0.0, /* rays_rotation */
+ 0.0, /* rays_hue */
+ 40, /* rays_nspikes */
+ 20.0, /* rays_thickness */
+ "%white_grad",/* sflare_radial */
+ "%random", /* sflare_sizefac */
+ "%random", /* sflare_probability */
+ 40.0, /* sflare_size */
+ 0.0, /* sflare_rotation */
+ 0.0, /* sflare_hue */
+ GF_CIRCLE, /* sflare_shape */
+ 6, /* sflare_nverts */
+ 0, /* sflare_seed */
+ TRUE, /* random_seed */
+};
+
+/* These are keywords to be written to disk files specifying flares. */
+/* They are not translated since we want gflare files to be compatible
+ across languages. */
+static const gchar *gflare_modes[] =
+{
+ "NORMAL",
+ "ADDITION",
+ "OVERLAY",
+ "SCREEN"
+};
+
+static const gchar *gflare_shapes[] =
+{
+ "CIRCLE",
+ "POLYGON"
+};
+
+/* These are for menu entries, so they are translated. */
+static const gchar *gflare_menu_modes[] =
+{
+ N_("Normal"),
+ N_("Addition"),
+ N_("Overlay"),
+ N_("Screen")
+};
+
+static gint32 image_ID;
+static gint32 drawable_ID;
+static DrawableInfo dinfo;
+static GFlareDialog *dlg = NULL;
+static GFlareEditor *ed = NULL;
+static GList *gflares_list = NULL;
+static gint num_gflares = 0;
+static gchar *gflare_path = NULL;
+static CalcParams calc;
+static GList *gradient_menus;
+static gchar **gradient_names = NULL;
+static gint num_gradient_names = 0;
+static GradientCacheItem *gradient_cache_head = NULL;
+static gint gradient_cache_count = 0;
+
+
+static const gchar *internal_gradients[] =
+{
+ "%white", "%white_grad", "%red_grad", "%blue_grad", "%yellow_grad", "%random"
+};
+
+#ifdef DEBUG
+static gint get_values_external_count = 0;
+static clock_t get_values_external_clock = 0;
+#endif
+
+
+/**
+*** +++ Static Functions Prototypes
+**/
+
+static void plugin_do (void);
+
+static void plugin_do_non_asupsample (GeglBuffer *src_buffer,
+ GeglBuffer *dest_buffer);
+static void plugin_do_asupsample (GeglBuffer *src_buffer,
+ GeglBuffer *dest_buffer);
+static void plugin_render_func (gdouble x,
+ gdouble y,
+ GimpRGB *color,
+ gpointer data);
+static void plugin_put_pixel_func (gint ix,
+ gint iy,
+ GimpRGB *color,
+ gpointer data);
+static void plugin_progress_func (gint y1,
+ gint y2,
+ gint curr_y,
+ gpointer data);
+
+static GFlare * gflare_new (void);
+static void gflare_free (GFlare *gflare);
+static void gflare_read_int (gint *intvar,
+ GFlareFile *gf);
+static void gflare_read_double (gdouble *dblvar,
+ GFlareFile *gf);
+static void gflare_read_gradient_name (gchar *name,
+ GFlareFile *gf);
+static void gflare_read_shape (GFlareShape *shape,
+ GFlareFile *gf);
+static void gflare_read_mode (GFlareMode *mode,
+ GFlareFile *gf);
+static void gflare_write_gradient_name (gchar *name,
+ FILE *fp);
+
+static gint calc_sample_one_gradient (void);
+static void calc_place_sflare (void);
+static void calc_get_gradient (guchar *pix,
+ guchar *gradient,
+ gdouble pos);
+static gdouble fmod_positive (gdouble x,
+ gdouble m);
+static void calc_paint_func (guchar *dest,
+ guchar *src1,
+ guchar *src2,
+ gint opacity,
+ GFlareMode mode);
+static void calc_combine (guchar *dest,
+ guchar *src1,
+ guchar *src2,
+ gint opacity);
+static void calc_addition (guchar *dest,
+ guchar *src1,
+ guchar *src2);
+static void calc_screen (guchar *dest,
+ guchar *src1,
+ guchar *src2);
+static void calc_overlay (guchar *dest,
+ guchar *src1,
+ guchar *src2);
+
+static void dlg_setup_gflare (void);
+static void dlg_preview_realize (GtkWidget *widget);
+static gboolean dlg_preview_handle_event (GtkWidget *widget,
+ GdkEvent *event);
+static void dlg_preview_update (void);
+static gint dlg_preview_init_func (Preview *preview,
+ gpointer data);
+static void dlg_preview_render_func (Preview *preview,
+ guchar *dest,
+ gint y,
+ gpointer data);
+static void dlg_preview_deinit_func (Preview *preview,
+ gpointer data);
+static void dlg_make_page_settings (GFlareDialog *dlg,
+ GtkWidget *notebook);
+static void dlg_position_entry_callback (GtkWidget *widget,
+ gpointer data);
+static void dlg_update_preview_callback (GtkWidget *widget,
+ gpointer data);
+static void dlg_make_page_selector (GFlareDialog *dlg,
+ GtkWidget *notebook);
+
+static void dlg_selector_setup_listbox (void);
+static void dlg_selector_list_item_callback (GtkTreeSelection *selection);
+
+static void dlg_selector_new_callback (GtkWidget *widget,
+ gpointer data);
+static void dlg_selector_new_ok_callback (GtkWidget *widget,
+ const gchar *new_name,
+ gpointer data);
+
+static void dlg_selector_edit_callback (GtkWidget *widget,
+ gpointer data);
+static void dlg_selector_edit_done_callback (gint updated,
+ gpointer data);
+
+static void dlg_selector_copy_callback (GtkWidget *widget,
+ gpointer data);
+static void dlg_selector_copy_ok_callback (GtkWidget *widget,
+ const gchar *copy_name,
+ gpointer data);
+
+static void dlg_selector_delete_callback (GtkWidget *widget,
+ gpointer data);
+static void dlg_selector_do_delete_callback (GtkWidget *widget,
+ gboolean delete,
+ gpointer data);
+
+static void ed_run (GtkWindow *parent,
+ GFlare *target_gflare,
+ GFlareEditorCallback callback,
+ gpointer calldata);
+static void ed_destroy_callback (GtkWidget *widget,
+ GFlareEditor *ed);
+static void ed_response (GtkWidget *widget,
+ gint response_id,
+ GFlareEditor *ed);
+static void ed_make_page_general (GFlareEditor *ed,
+ GtkWidget *notebook);
+static void ed_make_page_glow (GFlareEditor *ed,
+ GtkWidget *notebook);
+static void ed_make_page_rays (GFlareEditor *ed,
+ GtkWidget *notebook);
+static void ed_make_page_sflare (GFlareEditor *ed,
+ GtkWidget *notebook);
+static void ed_put_gradient_menu (GtkWidget *table,
+ gint x,
+ gint y,
+ const gchar *caption,
+ GradientMenu *gm);
+static void ed_mode_menu_callback (GtkWidget *widget,
+ gpointer data);
+static void ed_gradient_menu_callback (const gchar *gradient_name,
+ gpointer data);
+static void ed_shape_radio_callback (GtkWidget *widget, gpointer data);
+static void ed_ientry_callback (GtkWidget *widget, gpointer data);
+static void ed_page_map_callback (GtkWidget *widget, gpointer data);
+static void ed_preview_update (void);
+static gint ed_preview_init_func (Preview *preview, gpointer data);
+static void ed_preview_deinit_func (Preview *preview, gpointer data);
+static void ed_preview_render_func (Preview *preview,
+ guchar *buffer, gint y, gpointer data);
+static void ed_preview_render_general (guchar *buffer, gint y);
+static void ed_preview_render_glow (guchar *buffer, gint y);
+static void ed_preview_render_rays (guchar *buffer, gint y);
+static void ed_preview_render_sflare (guchar *buffer, gint y);
+
+static gint preview_render_start_2 (Preview *preview);
+static gint preview_handle_idle (Preview *preview);
+
+static void gm_gradient_get_list (void);
+static void gm_gradient_combo_fill (GradientMenu *gm,
+ const gchar *default_gradient);
+static void gm_gradient_combo_callback (GtkWidget *widget,
+ gpointer data);
+static void gm_preview_draw (GtkWidget *preview,
+ const gchar *gradient_name);
+static void gm_combo_destroy_callback (GtkWidget *widget,
+ gpointer data);
+
+static void gradient_get_values_internal (const gchar *gradient_name,
+ guchar *values, gint nvalues);
+static void gradient_get_blend (const guchar *fg,
+ const guchar *bg,
+ guchar *values, gint nvalues);
+static void gradient_get_random (guchar *values, gint nvalues);
+static void gradient_get_default (const gchar *name,
+ guchar *values, gint nvalues);
+static void gradient_get_values_external (const gchar *gradient_name,
+ guchar *values, gint nvalues);
+static void gradient_get_values_real_external (const gchar *gradient_name,
+ guchar *values,
+ gint nvalues,
+ gboolean reverse);
+static GradientCacheItem *gradient_cache_lookup (const gchar *name,
+ gboolean *found);
+static void gradient_cache_zorch (void);
+
+/* *** INSERT-FILE-END *** */
+
+
+/*************************************************************************/
+/** **/
+/** +++ Plug-in Interfaces **/
+/** **/
+/*************************************************************************/
+
+MAIN ()
+
+void
+plugin_query (void)
+{
+ static const GimpParamDef args[]=
+ {
+ { GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }" },
+ { GIMP_PDB_IMAGE, "image", "Input image (unused)" },
+ { GIMP_PDB_DRAWABLE, "drawable", "Input drawable" },
+ { GIMP_PDB_STRING, "gflare-name", "The name of GFlare" },
+ { GIMP_PDB_INT32, "xcenter", "X coordinate of center of GFlare" },
+ { GIMP_PDB_INT32, "ycenter", "Y coordinate of center of GFlare" },
+ { GIMP_PDB_FLOAT, "radius", "Radius of GFlare (pixel)" },
+ { GIMP_PDB_FLOAT, "rotation", "Rotation of GFlare (degree)" },
+ { GIMP_PDB_FLOAT, "hue", "Hue rotation of GFlare (degree)" },
+ { GIMP_PDB_FLOAT, "vangle", "Vector angle for second flares (degree)" },
+ { GIMP_PDB_FLOAT, "vlength", "Vector length for second flares (percentage to Radius)" },
+ { GIMP_PDB_INT32, "use-asupsample", "Whether it uses or not adaptive supersampling while rendering (boolean)" },
+ { GIMP_PDB_INT32, "asupsample-max-depth", "Max depth for adaptive supersampling"},
+ { GIMP_PDB_FLOAT, "asupsample-threshold", "Threshold for adaptive supersampling"}
+ };
+
+ const gchar *help_string =
+ "This plug-in produces a lense flare effect using custom gradients. "
+ "In interactive call, the user can edit his/her own favorite lense flare "
+ "(GFlare) and render it. Edited gflare is saved automatically to "
+ "the folder in gflare-path, if it is defined in gimprc. "
+ "In non-interactive call, the user can only render one of GFlare "
+ "which has been stored in gflare-path already.";
+
+ gimp_install_procedure (PLUG_IN_PROC,
+ N_("Produce a lense flare effect using gradients"),
+ help_string,
+ "Eiichi Takamori",
+ "Eiichi Takamori, and a lot of GIMP people",
+ "1997",
+ N_("_Gradient Flare..."),
+ "RGB*, GRAY*",
+ GIMP_PLUGIN,
+ G_N_ELEMENTS (args), 0,
+ args, NULL);
+
+ gimp_plugin_menu_register (PLUG_IN_PROC,
+ "<Image>/Filters/Light and Shadow/Light");
+}
+
+void
+plugin_run (const gchar *name,
+ gint nparams,
+ const GimpParam *param,
+ gint *nreturn_vals,
+ GimpParam **return_vals)
+{
+ static GimpParam values[2];
+ GimpRunMode run_mode;
+ GimpPDBStatusType status = GIMP_PDB_SUCCESS;
+ gchar *path;
+
+ INIT_I18N ();
+ gegl_init (NULL, NULL);
+
+ *nreturn_vals = 1;
+ *return_vals = values;
+
+ values[0].type = GIMP_PDB_STATUS;
+ values[0].data.d_status = status;
+
+ run_mode = param[0].data.d_int32;
+ image_ID = param[1].data.d_image;
+ drawable_ID = param[2].data.d_drawable;
+
+ dinfo.is_color = gimp_drawable_is_rgb (drawable_ID);
+ dinfo.has_alpha = gimp_drawable_has_alpha (drawable_ID);
+
+ if (dinfo.is_color)
+ {
+ if (dinfo.has_alpha)
+ dinfo.format = babl_format ("R'G'B'A u8");
+ else
+ dinfo.format = babl_format ("R'G'B' u8");
+ }
+ else
+ {
+ if (dinfo.has_alpha)
+ dinfo.format = babl_format ("Y'A u8");
+ else
+ dinfo.format = babl_format ("Y u8");
+ }
+
+ dinfo.bpp = babl_format_get_bytes_per_pixel (dinfo.format);
+
+ if (! gimp_drawable_mask_intersect (drawable_ID,
+ &dinfo.x, &dinfo.y, &dinfo.w, &dinfo.h))
+ return;
+
+ /*
+ * Start gradient caching
+ */
+
+ gradient_init ();
+
+ /*
+ * Parse gflare path from gimprc and load gflares
+ */
+
+ path = gimp_gimprc_query ("gflare-path");
+ if (path)
+ {
+ gflare_path = g_filename_from_utf8 (path, -1, NULL, NULL, NULL);
+ g_free (path);
+ }
+ else
+ {
+ gchar *gimprc = gimp_personal_rc_file ("gimprc");
+ gchar *full_path = gimp_config_build_data_path ("gflare");
+ gchar *esc_path = g_strescape (full_path, NULL);
+ g_free (full_path);
+
+ g_message (_("No %s in gimprc:\n"
+ "You need to add an entry like\n"
+ "(%s \"%s\")\n"
+ "to your %s file."),
+ "gflare-path", "gflare-path",
+ esc_path, gimp_filename_to_utf8 (gimprc));
+
+ g_free (gimprc);
+ g_free (esc_path);
+ }
+
+ gflares_list_load_all ();
+
+ switch (run_mode)
+ {
+ case GIMP_RUN_INTERACTIVE:
+
+ /* Possibly retrieve data */
+ gimp_get_data (PLUG_IN_PROC, &pvals);
+
+ /* First acquire information with a dialog */
+ if (! dlg_run ())
+ return;
+ break;
+
+ case GIMP_RUN_NONINTERACTIVE:
+ if (nparams != 14)
+ {
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+ else
+ {
+ gflare_name_copy (pvals.gflare_name, param[3].data.d_string);
+ pvals.xcenter = param[4].data.d_int32;
+ pvals.ycenter = param[5].data.d_int32;
+ pvals.radius = param[6].data.d_float;
+ pvals.rotation = param[7].data.d_float;
+ pvals.hue = param[8].data.d_float;
+ pvals.vangle = param[9].data.d_float;
+ pvals.vlength = param[10].data.d_float;
+ pvals.use_asupsample = param[11].data.d_int32;
+ pvals.asupsample_max_depth = param[12].data.d_int32;
+ pvals.asupsample_threshold = param[13].data.d_float;
+
+ if (pvals.radius <= 0)
+ status = GIMP_PDB_CALLING_ERROR;
+ }
+ break;
+
+ case GIMP_RUN_WITH_LAST_VALS:
+ /* Possibly retrieve data */
+ gimp_get_data (PLUG_IN_PROC, &pvals);
+ break;
+
+ default:
+ break;
+ }
+
+ if (status == GIMP_PDB_SUCCESS)
+ {
+ /* Make sure that the drawable is gray or RGB color */
+ if (gimp_drawable_is_rgb (drawable_ID) ||
+ gimp_drawable_is_gray (drawable_ID))
+ {
+ gimp_progress_init (_("Gradient Flare"));
+ plugin_do ();
+
+ if (run_mode != GIMP_RUN_NONINTERACTIVE)
+ gimp_displays_flush ();
+
+ /* Store data */
+ if (run_mode == GIMP_RUN_INTERACTIVE)
+ gimp_set_data (PLUG_IN_PROC, &pvals, sizeof (PluginValues));
+ }
+ else
+ {
+ status = GIMP_PDB_EXECUTION_ERROR;
+ *nreturn_vals = 2;
+ values[1].type = GIMP_PDB_STRING;
+ values[1].data.d_string = _("Cannot operate on indexed color images.");
+ }
+ }
+
+ values[0].data.d_status = status;
+
+ /*
+ * Deinitialization
+ */
+ gradient_free ();
+}
+
+static void
+plugin_do (void)
+{
+ GeglBuffer *src_buffer;
+ GeglBuffer *dest_buffer;
+ GFlare *gflare;
+
+ gflare = gflares_list_lookup (pvals.gflare_name);
+ if (gflare == NULL)
+ {
+ /* FIXME */
+ g_warning ("Not found %s\n", pvals.gflare_name);
+ return;
+ }
+
+ /* Initialize calc params and gradients */
+ calc_init_params (gflare, CALC_GLOW | CALC_RAYS | CALC_SFLARE,
+ pvals.xcenter, pvals.ycenter,
+ pvals.radius, pvals.rotation, pvals.hue,
+ pvals.vangle, pvals.vlength);
+ while (calc_init_progress ()) ;
+
+ src_buffer = gimp_drawable_get_buffer (drawable_ID);
+ dest_buffer = gimp_drawable_get_shadow_buffer (drawable_ID);
+
+ /* Render it ! */
+ if (pvals.use_asupsample)
+ plugin_do_asupsample (src_buffer, dest_buffer);
+ else
+ plugin_do_non_asupsample (src_buffer, dest_buffer);
+
+ g_object_unref (src_buffer);
+ g_object_unref (dest_buffer);
+
+ gimp_progress_update (1.0);
+
+ /* Clean up */
+ calc_deinit ();
+
+ gimp_drawable_merge_shadow (drawable_ID, TRUE);
+ gimp_drawable_update (drawable_ID, dinfo.x, dinfo.y, dinfo.w, dinfo.h);
+}
+
+/* these routines should be almost rewritten anyway */
+
+static void
+plugin_do_non_asupsample (GeglBuffer *src_buffer,
+ GeglBuffer *dest_buffer)
+{
+ GeglBufferIterator *iter;
+ gint progress;
+ gint max_progress;
+
+ progress = 0;
+ max_progress = dinfo.w * dinfo.h;
+
+ iter = gegl_buffer_iterator_new (src_buffer,
+ GEGL_RECTANGLE (dinfo.x, dinfo.y,
+ dinfo.w, dinfo.h), 0,
+ dinfo.format,
+ GEGL_ACCESS_READ, GEGL_ABYSS_NONE, 2);
+
+ gegl_buffer_iterator_add (iter, dest_buffer,
+ GEGL_RECTANGLE (dinfo.x, dinfo.y,
+ dinfo.w, dinfo.h), 0,
+ dinfo.format,
+ GEGL_ACCESS_WRITE, GEGL_ABYSS_NONE);
+
+ while (gegl_buffer_iterator_next (iter))
+ {
+ const guchar *src_row = iter->items[0].data;
+ guchar *dest_row = iter->items[1].data;
+ gint row, y;
+
+ for (row = 0, y = iter->items[0].roi.y;
+ row < iter->items[0].roi.height;
+ row++, y++)
+ {
+ const guchar *src = src_row;
+ guchar *dest = dest_row;
+ gint col, x;
+
+ for (col = 0, x = iter->items[0].roi.x;
+ col < iter->items[0].roi.width;
+ col++, x++)
+ {
+ guchar src_pix[4];
+ guchar dest_pix[4];
+ gint b;
+
+ for (b = 0; b < 3; b++)
+ src_pix[b] = dinfo.is_color ? src[b] : src[0];
+
+ src_pix[3] = dinfo.has_alpha ? src[dinfo.bpp - 1] : OPAQUE;
+
+ calc_gflare_pix (dest_pix, x, y, src_pix);
+
+ if (dinfo.is_color)
+ {
+ for (b = 0; b < 3; b++)
+ dest[b] = dest_pix[b];
+ }
+ else
+ {
+ dest[0] = LUMINOSITY (dest_pix);
+ }
+
+ if (dinfo.has_alpha)
+ dest[dinfo.bpp - 1] = dest_pix[3];
+
+ src += dinfo.bpp;
+ dest += dinfo.bpp;
+ }
+
+ src_row += dinfo.bpp * iter->items[0].roi.width;
+ dest_row += dinfo.bpp * iter->items[1].roi.width;
+ }
+
+ /* Update progress */
+ progress += iter->items[0].roi.width * iter->items[0].roi.height;
+ gimp_progress_update ((double) progress / (double) max_progress);
+ }
+}
+
+static void
+plugin_do_asupsample (GeglBuffer *src_buffer,
+ GeglBuffer *dest_buffer)
+{
+ gimp_adaptive_supersample_area (dinfo.x, dinfo.y,
+ dinfo.x + dinfo.w - 1, dinfo.y + dinfo.h - 1,
+ pvals.asupsample_max_depth,
+ pvals.asupsample_threshold,
+ plugin_render_func,
+ src_buffer,
+ plugin_put_pixel_func,
+ dest_buffer,
+ plugin_progress_func,
+ NULL);
+}
+
+/*
+ Adaptive supersampling callback functions
+
+ These routines may look messy, since adaptive supersampling needs
+ pixel values in `double' (from 0.0 to 1.0) but calc_*_pix () returns
+ guchar values. */
+
+static void
+plugin_render_func (gdouble x,
+ gdouble y,
+ GimpRGB *color,
+ gpointer data)
+{
+ GeglBuffer *src_buffer = data;
+ guchar src_pix[4];
+ guchar flare_pix[4];
+ guchar src[4];
+ gint b;
+ gint ix, iy;
+
+ /* translate (0.5, 0.5) before convert to `int' so that it can surely
+ point the center of pixel */
+ ix = floor (x + 0.5);
+ iy = floor (y + 0.5);
+
+ gegl_buffer_sample (src_buffer, ix, iy, NULL, src, dinfo.format,
+ GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
+
+ for (b = 0; b < 3; b++)
+ src_pix[b] = dinfo.is_color ? src[b] : src[0];
+ src_pix[3] = dinfo.has_alpha ? src[dinfo.bpp - 1] : OPAQUE;
+
+ calc_gflare_pix (flare_pix, x, y, src_pix);
+
+ color->r = flare_pix[0] / 255.0;
+ color->g = flare_pix[1] / 255.0;
+ color->b = flare_pix[2] / 255.0;
+ color->a = flare_pix[3] / 255.0;
+}
+
+static void
+plugin_put_pixel_func (gint ix,
+ gint iy,
+ GimpRGB *color,
+ gpointer data)
+{
+ GeglBuffer *dest_buffer = data;
+ guchar dest[4];
+
+ if (dinfo.is_color)
+ {
+ dest[0] = color->r * 255;
+ dest[1] = color->g * 255;
+ dest[2] = color->b * 255;
+ }
+ else
+ {
+ dest[0] = gimp_rgb_luminance_uchar (color);
+ }
+
+ if (dinfo.has_alpha)
+ dest[dinfo.bpp - 1] = color->a * 255;
+
+ gegl_buffer_set (dest_buffer, GEGL_RECTANGLE (ix, iy, 1, 1), 0,
+ dinfo.format, dest, GEGL_AUTO_ROWSTRIDE);
+}
+
+static void
+plugin_progress_func (gint y1,
+ gint y2,
+ gint curr_y,
+ gpointer data)
+{
+ gimp_progress_update ((double) curr_y / (double) (y2 - y1));
+}
+
+/*************************************************************************/
+/** **/
+/** +++ GFlare Routines **/
+/** **/
+/*************************************************************************/
+
+/*
+ * These code are more or less based on Quartic's gradient.c,
+ * other gimp sources, and script-fu.
+ */
+
+static GFlare *
+gflare_new (void)
+{
+ GFlare *gflare = g_new0 (GFlare, 1);
+
+ gflare->name = NULL;
+ gflare->filename = NULL;
+
+ return gflare;
+}
+
+static GFlare *
+gflare_new_with_default (const gchar *new_name)
+{
+ return gflare_dup (&default_gflare, new_name);
+}
+
+static GFlare *
+gflare_dup (const GFlare *src,
+ const gchar *new_name)
+{
+ GFlare *dest = g_new0 (GFlare, 1);
+
+ *dest = *src;
+
+ dest->name = g_strdup (new_name);
+ dest->filename = NULL;
+
+ return dest;
+}
+
+static void
+gflare_copy (GFlare *dest,
+ const GFlare *src)
+{
+ gchar *name, *filename;
+
+ name = dest->name;
+ filename = dest->filename;
+
+ *dest = *src;
+
+ dest->name = name;
+ dest->filename =filename;
+}
+
+
+static void
+gflare_free (GFlare *gflare)
+{
+ g_return_if_fail (gflare != NULL);
+
+ g_free (gflare->name);
+ g_free (gflare->filename);
+ g_free (gflare);
+}
+
+GFlare *
+gflare_load (const gchar *filename,
+ const gchar *name)
+{
+ FILE *fp;
+ GFlareFile *gf;
+ GFlare *gflare;
+ gchar header[256];
+
+ g_return_val_if_fail (filename != NULL, NULL);
+
+ fp = g_fopen (filename, "rb");
+ if (!fp)
+ {
+ g_message (_("Failed to open GFlare file '%s': %s"),
+ gimp_filename_to_utf8 (filename), g_strerror (errno));
+ return NULL;
+ }
+
+ if (fgets (header, sizeof(header), fp) == NULL
+ || strcmp (header, GFLARE_FILE_HEADER) != 0)
+ {
+ g_warning (_("'%s' is not a valid GFlare file."),
+ gimp_filename_to_utf8 (filename));
+ fclose (fp);
+ return NULL;
+ }
+
+ gf = g_new (GFlareFile, 1);
+ gf->fp = fp;
+ gf->error = FALSE;
+
+ gflare = gflare_new ();
+ gflare->name = g_strdup (name);
+ gflare->filename = g_strdup (filename);
+
+ gflare_read_double (&gflare->glow_opacity, gf);
+ gflare_read_mode (&gflare->glow_mode, gf);
+ gflare_read_double (&gflare->rays_opacity, gf);
+ gflare_read_mode (&gflare->rays_mode, gf);
+ gflare_read_double (&gflare->sflare_opacity, gf);
+ gflare_read_mode (&gflare->sflare_mode, gf);
+
+ gflare_read_gradient_name (gflare->glow_radial, gf);
+ gflare_read_gradient_name (gflare->glow_angular, gf);
+ gflare_read_gradient_name (gflare->glow_angular_size, gf);
+ gflare_read_double (&gflare->glow_size, gf);
+ gflare_read_double (&gflare->glow_rotation, gf);
+ gflare_read_double (&gflare->glow_hue, gf);
+
+ gflare_read_gradient_name (gflare->rays_radial, gf);
+ gflare_read_gradient_name (gflare->rays_angular, gf);
+ gflare_read_gradient_name (gflare->rays_angular_size, gf);
+ gflare_read_double (&gflare->rays_size, gf);
+ gflare_read_double (&gflare->rays_rotation, gf);
+ gflare_read_double (&gflare->rays_hue, gf);
+ gflare_read_int (&gflare->rays_nspikes, gf);
+ gflare_read_double (&gflare->rays_thickness, gf);
+
+ gflare_read_gradient_name (gflare->sflare_radial, gf);
+ gflare_read_gradient_name (gflare->sflare_sizefac, gf);
+ gflare_read_gradient_name (gflare->sflare_probability, gf);
+ gflare_read_double (&gflare->sflare_size, gf);
+ gflare_read_double (&gflare->sflare_hue, gf);
+ gflare_read_double (&gflare->sflare_rotation, gf);
+ gflare_read_shape (&gflare->sflare_shape, gf);
+ gflare_read_int (&gflare->sflare_nverts, gf);
+ gflare_read_int ((gint *) &gflare->sflare_seed, gf);
+
+ if (gflare->sflare_seed == 0)
+ gflare->sflare_seed = g_random_int();
+
+ fclose (gf->fp);
+
+ if (gf->error)
+ {
+ g_warning (_("invalid formatted GFlare file: %s\n"), filename);
+ g_free (gflare);
+ g_free (gf);
+ return NULL;
+ }
+
+ g_free (gf);
+
+ return gflare;
+}
+
+static void
+gflare_read_int (gint *intvar,
+ GFlareFile *gf)
+{
+ if (gf->error)
+ return;
+
+ if (fscanf (gf->fp, "%d", intvar) != 1)
+ gf->error = TRUE;
+}
+
+static void
+gflare_read_double (gdouble *dblvar,
+ GFlareFile *gf)
+{
+ gchar buf[31];
+
+ if (gf->error)
+ return;
+
+ if (fscanf (gf->fp, "%30s", buf) == 1)
+ *dblvar = g_ascii_strtod (buf, NULL);
+ else
+ gf->error = TRUE;
+}
+
+static void
+gflare_read_gradient_name (GradientName name,
+ GFlareFile *gf)
+{
+ gchar tmp[1024], dec[1024];
+
+ if (gf->error)
+ return;
+
+ /* FIXME: this is buggy */
+
+ if (fscanf (gf->fp, "%1023s", tmp) == 1)
+ {
+ /* @GRADIENT_NAME */
+ gradient_name_decode (dec, tmp);
+ gradient_name_copy (name, dec);
+ }
+ else
+ gf->error = TRUE;
+}
+
+static void
+gflare_read_shape (GFlareShape *shape,
+ GFlareFile *gf)
+{
+ gchar tmp[1024];
+ gint i;
+
+ if (gf->error)
+ return;
+
+ if (fscanf (gf->fp, "%1023s", tmp) == 1)
+ {
+ for (i = 0; i < GF_NUM_SHAPES; i++)
+ if (strcmp (tmp, gflare_shapes[i]) == 0)
+ {
+ *shape = i;
+ return;
+ }
+ }
+ gf->error = TRUE;
+}
+
+static void
+gflare_read_mode (GFlareMode *mode,
+ GFlareFile *gf)
+{
+ gchar tmp[1024];
+ gint i;
+
+ if (gf->error)
+ return;
+
+ if (fscanf (gf->fp, "%1023s", tmp) == 1)
+ {
+ for (i = 0; i < GF_NUM_MODES; i++)
+ if (strcmp (tmp, gflare_modes[i]) == 0)
+ {
+ *mode = i;
+ return;
+ }
+ }
+ gf->error = TRUE;
+}
+
+static void
+gflare_save (GFlare *gflare)
+{
+ FILE *fp;
+ gchar *path;
+ gchar buf[3][G_ASCII_DTOSTR_BUF_SIZE];
+ static gboolean message_ok = FALSE;
+
+ if (gflare->filename == NULL)
+ {
+ GList *list;
+
+ if (gflare_path == NULL)
+ {
+ if (! message_ok)
+ {
+ gchar *gimprc = gimp_personal_rc_file ("gimprc");
+ gchar *dir = gimp_personal_rc_file ("gflare");
+ gchar *gflare_dir;
+
+ gflare_dir =
+ g_strescape ("${gimp_dir}" G_DIR_SEPARATOR_S "gflare", NULL);
+
+ g_message (_("GFlare '%s' is not saved. If you add a new entry "
+ "in '%s', like:\n"
+ "(gflare-path \"%s\")\n"
+ "and make a folder '%s', then you can save "
+ "your own GFlares into that folder."),
+ gflare->name, gimprc, gflare_dir,
+ gimp_filename_to_utf8 (dir));
+
+ g_free (gimprc);
+ g_free (gflare_dir);
+ g_free (dir);
+
+ message_ok = TRUE;
+ }
+
+ return;
+ }
+
+ list = gimp_path_parse (gflare_path, 256, FALSE, NULL);
+ path = gimp_path_get_user_writable_dir (list);
+ gimp_path_free (list);
+
+ if (! path)
+ path = g_strdup (gimp_directory ());
+
+ gflare->filename = g_build_filename (path, gflare->name, NULL);
+
+ g_free (path);
+ }
+
+ fp = g_fopen (gflare->filename, "wb");
+ if (!fp)
+ {
+ g_message (_("Failed to write GFlare file '%s': %s"),
+ gimp_filename_to_utf8 (gflare->filename), g_strerror (errno));
+ return;
+ }
+
+ fprintf (fp, "%s", GFLARE_FILE_HEADER);
+ g_ascii_dtostr (buf[0],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->glow_opacity);
+ fprintf (fp, "%s %s\n", buf[0], gflare_modes[gflare->glow_mode]);
+ g_ascii_dtostr (buf[0],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->rays_opacity);
+ fprintf (fp, "%s %s\n", buf[0], gflare_modes[gflare->rays_mode]);
+ g_ascii_dtostr (buf[0],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->sflare_opacity);
+ fprintf (fp, "%s %s\n", buf[0], gflare_modes[gflare->sflare_mode]);
+
+ gflare_write_gradient_name (gflare->glow_radial, fp);
+ gflare_write_gradient_name (gflare->glow_angular, fp);
+ gflare_write_gradient_name (gflare->glow_angular_size, fp);
+ g_ascii_dtostr (buf[0],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->glow_size);
+ g_ascii_dtostr (buf[1],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->glow_rotation);
+ g_ascii_dtostr (buf[2],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->glow_hue);
+ fprintf (fp, "%s %s %s\n", buf[0], buf[1], buf[2]);
+
+ gflare_write_gradient_name (gflare->rays_radial, fp);
+ gflare_write_gradient_name (gflare->rays_angular, fp);
+ gflare_write_gradient_name (gflare->rays_angular_size, fp);
+ g_ascii_dtostr (buf[0],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->rays_size);
+ g_ascii_dtostr (buf[1],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->rays_rotation);
+ g_ascii_dtostr (buf[2],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->rays_hue);
+ fprintf (fp, "%s %s %s\n", buf[0], buf[1], buf[2]);
+ g_ascii_dtostr (buf[0],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->rays_thickness);
+ fprintf (fp, "%d %s\n", gflare->rays_nspikes, buf[0]);
+
+ gflare_write_gradient_name (gflare->sflare_radial, fp);
+ gflare_write_gradient_name (gflare->sflare_sizefac, fp);
+ gflare_write_gradient_name (gflare->sflare_probability, fp);
+ g_ascii_dtostr (buf[0],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->sflare_size);
+ g_ascii_dtostr (buf[1],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->sflare_rotation);
+ g_ascii_dtostr (buf[2],
+ G_ASCII_DTOSTR_BUF_SIZE, gflare->sflare_hue);
+ fprintf (fp, "%s %s %s\n", buf[0], buf[1], buf[2]);
+ fprintf (fp, "%s %d %d\n",
+ gflare_shapes[gflare->sflare_shape],
+ gflare->sflare_nverts, gflare->sflare_seed);
+
+ fclose (fp);
+}
+
+static void
+gflare_write_gradient_name (GradientName name,
+ FILE *fp)
+{
+ gchar enc[1024];
+
+ /* @GRADIENT_NAME */
+
+ /* encode white spaces and control characters (if any) */
+ gradient_name_encode (enc, name);
+
+ fprintf (fp, "%s\n", enc);
+}
+
+static void
+gflare_name_copy (gchar *dest,
+ const gchar *src)
+{
+ strncpy (dest, src, GFLARE_NAME_MAX - 1);
+ dest[GFLARE_NAME_MAX - 1] = '\0';
+}
+
+/*************************************************************************/
+/** **/
+/** +++ GFlares List **/
+/** **/
+/*************************************************************************/
+
+static gint
+gflare_compare (const GFlare *flare1,
+ const GFlare *flare2)
+{
+ return strcmp (flare1->name, flare2->name);
+}
+
+static gint
+gflares_list_insert (GFlare *gflare)
+{
+ num_gflares++;
+ gflares_list = g_list_insert_sorted (gflares_list, gflare,
+ (GCompareFunc) gflare_compare);
+ return gflares_list_index (gflare);
+}
+
+static gint
+gflare_compare_name (const GFlare *flare,
+ const gchar *name)
+{
+ return strcmp (flare->name, name);
+}
+
+static GFlare *
+gflares_list_lookup (const gchar *name)
+{
+ GList *llink;
+ llink = g_list_find_custom (gflares_list, name,
+ (GCompareFunc) gflare_compare_name);
+ return (llink) ? llink->data : NULL;
+}
+
+static gint
+gflares_list_index (GFlare *gflare)
+{
+ return g_list_index (gflares_list, gflare);
+}
+
+static gint
+gflares_list_remove (GFlare *gflare)
+{
+ GList *tmp;
+ gint n;
+
+ n = 0;
+ tmp = gflares_list;
+ while (tmp)
+ {
+ if (tmp->data == gflare)
+ {
+ /* Found! */
+ if (tmp->next == NULL)
+ num_gflares--;
+ gflares_list = g_list_remove (gflares_list, gflare);
+ return n;
+ }
+ tmp = tmp->next;
+ n++;
+ }
+ return -1;
+}
+
+/*
+ * Load all gflares, which are founded in gflare-path-list, into gflares_list.
+ */
+static void
+gflares_list_load_all (void)
+{
+ GList *path;
+ GList *list;
+
+ /* Make sure to clear any existing gflares */
+ gflares_list_free_all ();
+
+ path = gimp_config_path_expand_to_files (gflare_path, NULL);
+
+ for (list = path; list; list = g_list_next (list))
+ {
+ GFileEnumerator *enumerator;
+
+ enumerator = g_file_enumerate_children (list->data,
+ G_FILE_ATTRIBUTE_STANDARD_NAME ","
+ G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN ","
+ G_FILE_ATTRIBUTE_STANDARD_TYPE,
+ G_FILE_QUERY_INFO_NONE,
+ NULL, NULL);
+
+ if (enumerator)
+ {
+ GFileInfo *info;
+
+ while ((info = g_file_enumerator_next_file (enumerator, NULL, NULL)))
+ {
+ GFileType file_type = g_file_info_get_file_type (info);
+
+ if (file_type == G_FILE_TYPE_REGULAR &&
+ ! g_file_info_get_is_hidden (info))
+ {
+ GFlare *gflare;
+ GFile *child;
+ gchar *filename;
+ gchar *basename;
+
+ child = g_file_enumerator_get_child (enumerator, info);
+
+ filename = g_file_get_path (child);
+ basename = g_file_get_basename (child);
+
+ gflare = gflare_load (filename, basename);
+
+ g_free (filename);
+ g_free (basename);
+
+ if (gflare)
+ gflares_list_insert (gflare);
+
+ g_object_unref (child);
+ }
+
+ g_object_unref (info);
+ }
+
+ g_object_unref (enumerator);
+ }
+ }
+
+ g_list_free_full (path, (GDestroyNotify) g_object_unref);
+}
+
+static void
+gflares_list_free_all (void)
+{
+ g_list_free_full (gflares_list, (GDestroyNotify) gflare_free);
+ gflares_list = NULL;
+}
+
+/*************************************************************************/
+/** **/
+/** +++ Calculator **/
+/** **/
+/*************************************************************************/
+
+
+/*
+ * These routines calculates pixel values of particular gflare, at
+ * specified point. The client which wants to get benefit from these
+ * calculation routines must call calc_init_params() first, and
+ * iterate calling calc_init_progress() until it returns FALSE. and
+ * must call calc_deinit() when job is done.
+ */
+
+static void
+calc_init_params (GFlare *gflare,
+ gint calc_type,
+ gdouble xcenter,
+ gdouble ycenter,
+ gdouble radius,
+ gdouble rotation,
+ gdouble hue,
+ gdouble vangle,
+ gdouble vlength)
+{
+ calc.type = calc_type;
+ calc.gflare = gflare;
+ calc.xcenter = xcenter;
+ calc.ycenter = ycenter;
+ calc.radius = radius;
+ calc.rotation = rotation * G_PI / 180.0;
+ calc.hue = hue;
+ calc.vangle = vangle * G_PI / 180.0;
+ calc.vlength = radius * vlength / 100.0;
+ calc.glow_radius = radius * gflare->glow_size / 100.0;
+ calc.rays_radius = radius * gflare->rays_size / 100.0;
+ calc.sflare_radius = radius * gflare->sflare_size / 100.0;
+ calc.glow_rotation = (rotation + gflare->glow_rotation) * G_PI / 180.0;
+ calc.rays_rotation = (rotation + gflare->rays_rotation) * G_PI / 180.0;
+ calc.sflare_rotation = (rotation + gflare->sflare_rotation) * G_PI / 180.0;
+ calc.glow_opacity = gflare->glow_opacity * 255 / 100.0;
+ calc.rays_opacity = gflare->rays_opacity * 255 / 100.0;
+ calc.sflare_opacity = gflare->sflare_opacity * 255 / 100.0;
+
+ calc.glow_bounds.x0 = calc.xcenter - calc.glow_radius - 0.1;
+ calc.glow_bounds.x1 = calc.xcenter + calc.glow_radius + 0.1;
+ calc.glow_bounds.y0 = calc.ycenter - calc.glow_radius - 0.1;
+ calc.glow_bounds.y1 = calc.ycenter + calc.glow_radius + 0.1;
+ calc.rays_bounds.x0 = calc.xcenter - calc.rays_radius - 0.1;
+ calc.rays_bounds.x1 = calc.xcenter + calc.rays_radius + 0.1;
+ calc.rays_bounds.y0 = calc.ycenter - calc.rays_radius - 0.1;
+ calc.rays_bounds.y1 = calc.ycenter + calc.rays_radius + 0.1;
+
+ /* Thanks to Marcelo Malheiros for this algorithm */
+ calc.rays_thinness = log (gflare->rays_thickness / 100.0) / log(0.8);
+
+ calc.rays_spike_mod = 1.0 / (2 * gflare->rays_nspikes);
+
+ /*
+ Initialize part of sflare
+ The rest will be initialized in calc_sflare()
+ */
+ calc.sflare_list = NULL;
+ calc.sflare_shape = gflare->sflare_shape;
+ if (calc.sflare_shape == GF_POLYGON)
+ {
+ calc.sflare_angle = 2 * G_PI / (2 * gflare->sflare_nverts);
+ calc.sflare_factor = 1.0 / cos (calc.sflare_angle);
+ }
+
+ calc.glow_radial = NULL;
+ calc.glow_angular = NULL;
+ calc.glow_angular_size = NULL;
+ calc.rays_radial = NULL;
+ calc.rays_angular = NULL;
+ calc.rays_angular_size = NULL;
+ calc.sflare_radial = NULL;
+ calc.sflare_sizefac = NULL;
+ calc.sflare_probability = NULL;
+
+ calc.init = TRUE;
+}
+
+static int
+calc_init_progress (void)
+{
+ if (calc_sample_one_gradient ())
+ return TRUE;
+ calc_place_sflare ();
+ return FALSE;
+}
+
+/*
+ Store samples of gradient into an array
+ this routine is called during Calc initialization
+ this code is very messy... :( */
+static int
+calc_sample_one_gradient (void)
+{
+ static struct
+ {
+ guchar **values;
+ gint name_offset;
+ gint hue_offset;
+ gint gray;
+ } table[] = {
+ {
+ &calc.glow_radial,
+ G_STRUCT_OFFSET (GFlare, glow_radial),
+ G_STRUCT_OFFSET (GFlare, glow_hue),
+ FALSE
+ },
+ {
+ &calc.glow_angular,
+ G_STRUCT_OFFSET (GFlare, glow_angular),
+ 0,
+ FALSE
+ },
+ {
+ &calc.glow_angular_size,
+ G_STRUCT_OFFSET (GFlare, glow_angular_size),
+ 0,
+ TRUE
+ },
+ {
+ &calc.rays_radial,
+ G_STRUCT_OFFSET (GFlare, rays_radial),
+ G_STRUCT_OFFSET (GFlare, rays_hue),
+ FALSE
+ },
+ {
+ &calc.rays_angular,
+ G_STRUCT_OFFSET (GFlare, rays_angular),
+ 0,
+ FALSE
+ },
+ {
+ &calc.rays_angular_size,
+ G_STRUCT_OFFSET (GFlare, rays_angular_size),
+ 0,
+ TRUE
+ },
+ {
+ &calc.sflare_radial,
+ G_STRUCT_OFFSET (GFlare, sflare_radial),
+ G_STRUCT_OFFSET (GFlare, sflare_hue),
+ FALSE
+ },
+ {
+ &calc.sflare_sizefac,
+ G_STRUCT_OFFSET (GFlare, sflare_sizefac),
+ 0,
+ TRUE
+ },
+ {
+ &calc.sflare_probability,
+ G_STRUCT_OFFSET (GFlare, sflare_probability),
+ 0,
+ TRUE
+ }
+ };
+ GFlare *gflare = calc.gflare;
+ GradientName *grad_name;
+ guchar *gradient;
+ gdouble hue_deg;
+ gint i, j, hue;
+
+ for (i = 0; i < G_N_ELEMENTS (table); i++)
+ {
+ if (*(table[i].values) == NULL)
+ {
+ /* @GRADIENT_NAME */
+ grad_name = (GradientName *) ((char*) gflare + table[i].name_offset);
+ gradient = *(table[i].values) = g_new (guchar, 4 * GRADIENT_RESOLUTION);
+ gradient_get_values (*grad_name, gradient, GRADIENT_RESOLUTION);
+
+ /*
+ * Do hue rotation, if needed
+ */
+
+ if (table[i].hue_offset != 0)
+ {
+ hue_deg = calc.hue + *(gdouble *) ((char*) gflare + table[i].hue_offset);
+ hue = (gint) (hue_deg / 360.0 * 256.0) % 256;
+ if (hue < 0)
+ hue += 256;
+ g_assert (0 <= hue && hue < 256);
+
+ if (hue > 0)
+ {
+ for (j = 0; j < GRADIENT_RESOLUTION; j++)
+ {
+ GimpRGB rgb;
+ GimpHSV hsv;
+
+ rgb.r = (gdouble) gradient[j*4] / 255.0;
+ rgb.g = (gdouble) gradient[j*4+1] / 255.0;
+ rgb.b = (gdouble) gradient[j*4+2] / 255.0;
+
+ gimp_rgb_to_hsv (&rgb, &hsv);
+
+ hsv.h = (hsv.h + ((gdouble) hue / 255.0));
+ if (hsv.h > 1.0)
+ hsv.h -= 1.0;
+
+ gimp_hsv_to_rgb (&hsv, &rgb);
+
+ gradient[j*4] = ROUND (rgb.r * 255.0);
+ gradient[j*4+1] = ROUND (rgb.g * 255.0);
+ gradient[j*4+2] = ROUND (rgb.b * 255.0);
+ }
+ }
+ }
+
+ /*
+ * Grayfy gradient, if needed
+ */
+
+ if (table[i].gray)
+ {
+ for (j = 0; j < GRADIENT_RESOLUTION; j++)
+ /* the first byte is enough */
+ gradient[j*4] = LUMINOSITY ((gradient + j*4));
+
+ }
+
+ /* sampling of one gradient is done */
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+static void
+calc_place_sflare (void)
+{
+ GFlare *gflare;
+ CalcSFlare *sflare;
+ gdouble prob[GRADIENT_RESOLUTION];
+ gdouble sum, sum2;
+ gdouble pos;
+ gdouble rnd, sizefac;
+ int n;
+ int i;
+ GRand *gr;
+
+ gr = g_rand_new ();
+ if ((calc.type & CALC_SFLARE) == 0)
+ return;
+
+ gflare = calc.gflare;
+
+ /*
+ Calc cumulative probability
+ */
+
+ sum = 0.0;
+ for (i = 0; i < GRADIENT_RESOLUTION; i++)
+ {
+ /* probability gradient was grayfied already */
+ prob[i] = calc.sflare_probability[i*4];
+ sum += prob[i];
+ }
+
+ if (sum == 0.0)
+ sum = 1.0;
+
+ sum2 = 0;
+ for (i = 0; i < GRADIENT_RESOLUTION; i++)
+ {
+ sum2 += prob[i]; /* cumulation */
+ prob[i] = sum2 / sum;
+ }
+
+ g_rand_set_seed (gr, gflare->sflare_seed);
+
+ for (n = 0; n < SFLARE_NUM; n++)
+ {
+ sflare = g_new (CalcSFlare, 1);
+ rnd = g_rand_double (gr);
+ for (i = 0; i < GRADIENT_RESOLUTION; i++)
+ if (prob[i] >= rnd)
+ break;
+ if (i >= GRADIENT_RESOLUTION)
+ i = GRADIENT_RESOLUTION - 1;
+
+ /* sizefac gradient was grayfied already */
+ sizefac = calc.sflare_sizefac[i*4] / 255.0;
+ sizefac = pow (sizefac, 5.0);
+
+ pos = (double) (i - GRADIENT_RESOLUTION / 2) / GRADIENT_RESOLUTION;
+ sflare->xcenter = calc.xcenter + cos (calc.vangle) * calc.vlength * pos;
+ sflare->ycenter = calc.ycenter - sin (calc.vangle) * calc.vlength * pos;
+ sflare->radius = sizefac * calc.sflare_radius; /* FIXME */
+ sflare->bounds.x0 = sflare->xcenter - sflare->radius - 1;
+ sflare->bounds.x1 = sflare->xcenter + sflare->radius + 1;
+ sflare->bounds.y0 = sflare->ycenter - sflare->radius - 1;
+ sflare->bounds.y1 = sflare->ycenter + sflare->radius + 1;
+ calc.sflare_list = g_list_append (calc.sflare_list, sflare);
+ }
+
+ g_rand_free (gr);
+}
+
+static void
+calc_deinit (void)
+{
+ if (!calc.init)
+ {
+ g_warning("calc_deinit: not initialized");
+ return;
+ }
+
+ g_list_free_full (calc.sflare_list, (GDestroyNotify) g_free);
+
+ g_free (calc.glow_radial);
+ g_free (calc.glow_angular);
+ g_free (calc.glow_angular_size);
+ g_free (calc.rays_radial);
+ g_free (calc.rays_angular);
+ g_free (calc.rays_angular_size);
+ g_free (calc.sflare_radial);
+ g_free (calc.sflare_sizefac);
+ g_free (calc.sflare_probability);
+
+ calc.init = FALSE;
+}
+
+/*
+ * Get sample value at specified position of a gradient
+ *
+ * gradient samples are stored into array at the time of
+ * calc_sample_one_gradients (), and it is now linear interpolated.
+ *
+ * INPUT:
+ * guchar gradient[4*GRADIENT_RESOLUTION] gradient array(RGBA)
+ * gdouble pos position (0<=pos<=1)
+ * OUTPUT:
+ * guchar pix[4]
+ */
+static void
+calc_get_gradient (guchar *pix, guchar *gradient, gdouble pos)
+{
+ gint ipos;
+ gdouble frac;
+ gint i;
+
+ if (pos < 0 || pos > 1)
+ {
+ pix[0] = pix[1] = pix[2] = pix[3] = 0;
+ return;
+ }
+ pos *= GRADIENT_RESOLUTION - 1.0001;
+ ipos = (gint) pos; frac = pos - ipos;
+ gradient += ipos * 4;
+
+ for (i = 0; i < 4; i++)
+ {
+ pix[i] = gradient[i] * (1 - frac) + gradient[i+4] * frac;
+ }
+}
+
+/* I need fmod to return always positive value */
+static gdouble
+fmod_positive (gdouble x, gdouble m)
+{
+ return x - floor (x/m) * m;
+}
+
+/*
+ * Calc glow's pixel (RGBA) value
+ * INPUT:
+ * gdouble x, y image coordinates
+ * OUTPUT:
+ * guchar pix[4]
+ */
+static void
+calc_glow_pix (guchar *dest_pix, gdouble x, gdouble y)
+{
+ gdouble radius, angle;
+ gdouble angular_size;
+ guchar radial_pix[4], angular_pix[4], size_pix[4];
+ gint i;
+
+ if ((calc.type & CALC_GLOW) == 0
+ || x < calc.glow_bounds.x0 || x > calc.glow_bounds.x1
+ || y < calc.glow_bounds.y0 || y > calc.glow_bounds.y1)
+ {
+ memset (dest_pix, 0, 4);
+ return;
+ }
+
+ x -= calc.xcenter;
+ y -= calc.ycenter;
+ radius = sqrt (x*x + y*y) / calc.glow_radius;
+ angle = (atan2 (-y, x) + calc.glow_rotation ) / (2 * G_PI);
+ angle = fmod_positive (angle, 1.0);
+
+ calc_get_gradient (size_pix, calc.glow_angular_size, angle);
+ /* angular_size gradient was grayfied already */
+ angular_size = size_pix[0] / 255.0;
+ radius /= (angular_size+0.0001); /* in case angular_size == 0.0 */
+ if (radius < 0 || radius > 1)
+ {
+ memset (dest_pix, 0, 4);
+ return;
+ }
+
+ calc_get_gradient (radial_pix, calc.glow_radial, radius);
+ calc_get_gradient (angular_pix, calc.glow_angular, angle);
+
+ for (i = 0; i < 4; i++)
+ dest_pix[i] = radial_pix[i] * angular_pix[i] / 255;
+}
+
+/*
+ * Calc rays's pixel (RGBA) value
+ *
+ */
+static void
+calc_rays_pix (guchar *dest_pix, gdouble x, gdouble y)
+{
+ gdouble radius, angle;
+ gdouble angular_size;
+ gdouble spike_frac, spike_inten, spike_angle;
+ guchar radial_pix[4], angular_pix[4], size_pix[4];
+ gint i;
+
+ if ((calc.type & CALC_RAYS) == 0
+ || x < calc.rays_bounds.x0 || x > calc.rays_bounds.x1
+ || y < calc.rays_bounds.y0 || y > calc.rays_bounds.y1)
+ {
+ memset (dest_pix, 0, 4);
+ return;
+ }
+
+ x -= calc.xcenter;
+ y -= calc.ycenter;
+ radius = sqrt (x*x + y*y) / calc.rays_radius;
+ angle = (atan2 (-y, x) + calc.rays_rotation ) / (2 * G_PI);
+ angle = fmod_positive (angle, 1.0); /* make sure 0 <= angle < 1.0 */
+ spike_frac = fmod (angle, calc.rays_spike_mod * 2);
+ spike_angle = angle - spike_frac + calc.rays_spike_mod;
+ spike_frac = (angle - spike_angle) / calc.rays_spike_mod;
+ /* spike_frac is between -1.0 and 1.0 here (except round error...) */
+
+ spike_inten = pow (1.0 - fabs (spike_frac), calc.rays_thinness);
+
+ calc_get_gradient (size_pix, calc.rays_angular_size, spike_angle);
+ /* angular_size gradient was grayfied already */
+ angular_size = size_pix[0] / 255.0;
+ radius /= (angular_size+0.0001); /* in case angular_size == 0.0 */
+ if(radius < 0 || radius > 1)
+ {
+ memset (dest_pix, 0, 4);
+ return;
+ }
+
+ calc_get_gradient (radial_pix, calc.rays_radial, radius);
+ calc_get_gradient (angular_pix, calc.rays_angular, spike_angle);
+
+ for (i = 0; i < 3; i++)
+ dest_pix[i] = radial_pix[i] * angular_pix[i] / 255;
+ dest_pix[3] = spike_inten * radial_pix[3] * angular_pix[3] / 255;
+}
+
+/*
+ * Calc sflare's pixel (RGBA) value
+ *
+ * the sflare (second flares) are needed to be rendered one each
+ * sequentially, onto the source image, such as like usual layer
+ * operations. So the function takes src_pix as argument. glow, rays
+ * routines don't have src_pix as argument, because of convenience.
+ *
+ * @JAPANESE
+ * sflare $B$OJ#?t$N%U%l%"$r=g$K(B($B%l%$%dE*$K(B)$B$+$V$;$J$,$iIA2h$9$kI,MW$,(B
+ * $B$"$k$N$G!"$3$l$@$1(B src_pix $B$r0z?t$K$H$C$F(B paint_func $B$rE,MQ$9$k!#(B
+ * glow, rays $B$O4J0W2=$N$?$a$K$J$7!#(B
+ */
+void
+calc_sflare_pix (guchar *dest_pix, gdouble x, gdouble y, guchar *src_pix)
+{
+ GList *list;
+ CalcSFlare *sflare;
+ gdouble sx, sy, th;
+ gdouble radius, angle;
+ guchar radial_pix[4], tmp_pix[4];
+
+ memcpy (dest_pix, src_pix, 4);
+
+ if ((calc.type & CALC_SFLARE) == 0)
+ return;
+
+ list = calc.sflare_list;
+ while (list)
+ {
+ sflare = list->data;
+ list = list->next;
+
+ if (x < sflare->bounds.x0 || x > sflare->bounds.x1
+ || y < sflare->bounds.y0 || y > sflare->bounds.y1)
+ continue;
+ sx = x - sflare->xcenter;
+ sy = y - sflare->ycenter;
+ radius = sqrt (sx * sx + sy * sy) / sflare->radius;
+ if (calc.sflare_shape == GF_POLYGON)
+ {
+ angle = atan2 (-sy, sx) - calc.vangle + calc.sflare_rotation;
+ th = fmod_positive (angle, calc.sflare_angle * 2) - calc.sflare_angle;
+ radius *= cos (th) * calc.sflare_factor;
+ }
+ if (radius < 0 || radius > 1)
+ continue;
+
+ calc_get_gradient (radial_pix, calc.sflare_radial, radius);
+ memcpy (tmp_pix, dest_pix, 4);
+ calc_paint_func (dest_pix, tmp_pix, radial_pix,
+ calc.sflare_opacity, calc.gflare->sflare_mode);
+ }
+}
+
+static void
+calc_gflare_pix (guchar *dest_pix, gdouble x, gdouble y, guchar *src_pix)
+{
+ GFlare *gflare = calc.gflare;
+ guchar glow_pix[4], rays_pix[4];
+ guchar tmp_pix[4];
+
+ memcpy (dest_pix, src_pix, 4);
+
+ if (calc.type & CALC_GLOW)
+ {
+ memcpy (tmp_pix, dest_pix, 4);
+ calc_glow_pix (glow_pix, x, y);
+ calc_paint_func (dest_pix, tmp_pix, glow_pix,
+ calc.glow_opacity, gflare->glow_mode);
+ }
+ if (calc.type & CALC_RAYS)
+ {
+ memcpy (tmp_pix, dest_pix, 4);
+ calc_rays_pix (rays_pix, x, y);
+ calc_paint_func (dest_pix, tmp_pix, rays_pix,
+ calc.rays_opacity, gflare->rays_mode);
+ }
+ if (calc.type & CALC_SFLARE)
+ {
+ memcpy (tmp_pix, dest_pix, 4);
+ calc_sflare_pix (dest_pix, x, y, tmp_pix);
+ }
+}
+
+/*
+ Paint func routines, such as Normal, Addition, ...
+ */
+static void
+calc_paint_func (guchar *dest, guchar *src1, guchar *src2, gint opacity,
+ GFlareMode mode)
+{
+ guchar buf[4], *s=buf;
+
+ if (src2[3] == 0 || opacity <= 0)
+ {
+ memcpy (dest, src1, 4);
+ return;
+ }
+
+ switch (mode)
+ {
+ case GF_NORMAL:
+ s = src2;
+ break;
+ case GF_ADDITION:
+ calc_addition (s, src1, src2);
+ break;
+ case GF_OVERLAY:
+ calc_overlay (s, src1, src2);
+ break;
+ case GF_SCREEN:
+ calc_screen (s, src1, src2);
+ break;
+ default:
+ s = src2;
+ break;
+ }
+ calc_combine (dest, src1, s, opacity);
+}
+
+static void
+calc_combine (guchar *dest, guchar *src1, guchar *src2, gint opacity)
+{
+ gdouble s1_a, s2_a, new_a;
+ gdouble ratio, compl_ratio;
+ gint i;
+
+ s1_a = src1[3] / 255.0;
+ s2_a = src2[3] * opacity / 65025.0;
+ new_a = s1_a + (1.0 - s1_a) * s2_a;
+
+ if (new_a != 0.0)
+ ratio = s2_a / new_a;
+ else
+ ratio = 0.0;
+
+ compl_ratio = 1.0 - ratio;
+
+ for (i = 0; i < 3; i++)
+ dest[i] = src1[i] * compl_ratio + src2[i] * ratio;
+
+ dest[3] = new_a * 255.0;
+}
+
+static void
+calc_addition (guchar *dest, guchar *src1, guchar *src2)
+{
+ gint tmp, i;
+
+ for (i = 0; i < 3; i++)
+ {
+ tmp = src1[i] + src2[i];
+ dest[i] = tmp <= 255 ? tmp: 255;
+ }
+ dest[3] = MIN (src1[3], src2[3]);
+}
+
+static void
+calc_screen (guchar *dest, guchar *src1, guchar *src2)
+{
+ gint i;
+
+ for (i = 0; i < 3; i++)
+ {
+ dest[i] = 255 - ((255 - src1[i]) * (255 - src2[i])) / 255;
+ }
+ dest[3] = MIN (src1[3], src2[3]);
+}
+
+static void
+calc_overlay (guchar *dest, guchar *src1, guchar *src2)
+{
+ gint screen, mult, i;
+
+ for (i = 0; i < 3; i++)
+ {
+ screen = 255 - ((255 - src1[i]) * (255 - src2[i])) / 255;
+ mult = (src1[i] * src2[i]) / 255;
+ dest[i] = (screen * src1[i] + mult * (255 - src1[i])) / 255;
+ }
+ dest[3] = MIN (src1[3], src2[3]);
+}
+
+/*************************************************************************/
+/** **/
+/** Main Dialog **/
+/** +++ dlg **/
+/** **/
+/*************************************************************************/
+
+/*
+ This is gflare main dialog, one which opens in first.
+ */
+
+static gboolean
+dlg_run (void)
+{
+ GeglBuffer *src_buffer;
+ GtkWidget *shell;
+ GtkWidget *hbox;
+ GtkWidget *vbox;
+ GtkWidget *frame;
+ GtkWidget *abox;
+ GtkWidget *button;
+ GtkWidget *notebook;
+ gboolean run = FALSE;
+
+ gimp_ui_init (PLUG_IN_BINARY, TRUE);
+
+ /*
+ * Init Main Dialog
+ */
+
+ dlg = g_new0 (GFlareDialog, 1);
+ dlg->init = TRUE;
+ dlg->update_preview = TRUE;
+
+ gradient_menu_init (); /* FIXME: this should go elsewhere */
+ dlg_setup_gflare ();
+
+ g_assert (gflares_list != NULL);
+ g_assert (dlg->gflare != NULL);
+ g_assert (dlg->gflare->name != NULL);
+
+ /*
+ * Dialog Shell
+ */
+
+ shell = dlg->shell = gimp_dialog_new (_("Gradient Flare"), PLUG_IN_ROLE,
+ NULL, 0,
+ gimp_standard_help_func, PLUG_IN_PROC,
+
+ _("_Cancel"), GTK_RESPONSE_CANCEL,
+ _("_OK"), GTK_RESPONSE_OK,
+
+ NULL);
+
+ gtk_dialog_set_alternative_button_order (GTK_DIALOG (shell),
+ GTK_RESPONSE_OK,
+ GTK_RESPONSE_CANCEL,
+ -1);
+
+ /*
+ * main hbox
+ */
+
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
+ gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (shell))),
+ hbox, FALSE, FALSE, 0);
+ gtk_widget_show (hbox);
+
+ /*
+ * Preview
+ */
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
+ gtk_box_pack_start (GTK_BOX (hbox), vbox, FALSE, FALSE, 0);
+ gtk_widget_show (vbox);
+
+ abox = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
+ gtk_box_pack_start (GTK_BOX (vbox), abox, TRUE, TRUE, 0);
+ gtk_widget_show (abox);
+
+ frame = gtk_frame_new (NULL);
+ gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+ gtk_container_add (GTK_CONTAINER (abox), frame);
+ gtk_widget_show (frame);
+
+ src_buffer = gimp_drawable_get_buffer (drawable_ID);
+
+ dlg->preview = preview_new (DLG_PREVIEW_WIDTH, DLG_PREVIEW_HEIGHT,
+ dlg_preview_init_func, NULL,
+ dlg_preview_render_func, src_buffer,
+ dlg_preview_deinit_func, NULL);
+ gtk_widget_set_events (GTK_WIDGET (dlg->preview->widget), DLG_PREVIEW_MASK);
+ gtk_container_add (GTK_CONTAINER (frame), dlg->preview->widget);
+
+ g_signal_connect (dlg->preview->widget, "realize",
+ G_CALLBACK (dlg_preview_realize),
+ NULL);
+ g_signal_connect (dlg->preview->widget, "event",
+ G_CALLBACK (dlg_preview_handle_event),
+ NULL);
+
+ dlg_preview_calc_window ();
+
+ button = gtk_check_button_new_with_mnemonic (_("A_uto update preview"));
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
+ dlg->update_preview);
+ gtk_box_pack_end (GTK_BOX (vbox), button, FALSE, FALSE, 0);
+ gtk_widget_show (button);
+
+ g_signal_connect (button, "toggled",
+ G_CALLBACK (dlg_update_preview_callback),
+ &dlg->update_preview);
+
+ /*
+ * Notebook
+ */
+
+ notebook = dlg->notebook = gtk_notebook_new ();
+ gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
+ gtk_widget_show (notebook);
+
+ dlg_make_page_settings (dlg, notebook);
+ dlg_make_page_selector (dlg, notebook);
+
+ gtk_widget_show (shell);
+
+ /*
+ * Initialization done
+ */
+ dlg->init = FALSE;
+ dlg_preview_update ();
+
+ if (gimp_dialog_run (GIMP_DIALOG (shell)) == GTK_RESPONSE_OK)
+ {
+ gflare_name_copy (pvals.gflare_name, dlg->gflare->name);
+
+ run = TRUE;
+ }
+
+ g_object_unref (src_buffer);
+
+ gtk_widget_destroy (shell);
+
+ return run;
+}
+
+static void
+dlg_setup_gflare (void)
+{
+ dlg->gflare = gflares_list_lookup (pvals.gflare_name);
+
+ if (!dlg->gflare)
+ {
+ dlg->gflare = gflares_list_lookup ("Default");
+ if (!dlg->gflare)
+ {
+ g_warning (_("'Default' is created."));
+ dlg->gflare = gflare_new_with_default (_("Default"));
+ gflares_list_insert (dlg->gflare);
+ }
+ }
+}
+
+/***********************************/
+/** Main Dialog / Preview **/
+/***********************************/
+
+/*
+ * Calculate preview's window, ie. translation of preview widget and
+ * drawable.
+ *
+ * x0, x1, y0, y1 are drawable coord, corresponding with top left
+ * corner of preview widget, etc.
+ */
+void
+dlg_preview_calc_window (void)
+{
+ gint width = gimp_drawable_width (drawable_ID);
+ gint height = gimp_drawable_height (drawable_ID);
+ gint is_wide;
+ gdouble offx, offy;
+
+ is_wide = ((double) DLG_PREVIEW_HEIGHT * width >=
+ (double) DLG_PREVIEW_WIDTH * height);
+
+ if (is_wide)
+ {
+ offy = ((double) width * DLG_PREVIEW_HEIGHT / DLG_PREVIEW_WIDTH) / 2.0;
+
+ dlg->pwin.x0 = 0;
+ dlg->pwin.x1 = width;
+ dlg->pwin.y0 = height / 2.0 - offy;
+ dlg->pwin.y1 = height / 2.0 + offy;
+ }
+ else
+ {
+ offx = ((double) height * DLG_PREVIEW_WIDTH / DLG_PREVIEW_HEIGHT) / 2.0;
+
+ dlg->pwin.x0 = width / 2.0 - offx;
+ dlg->pwin.x1 = width / 2.0 + offx;
+ dlg->pwin.y0 = 0;
+ dlg->pwin.y1 = height;
+ }
+}
+
+void
+ed_preview_calc_window (void)
+{
+ gint width = gimp_drawable_width (drawable_ID);
+ gint height = gimp_drawable_height (drawable_ID);
+ gint is_wide;
+ gdouble offx, offy;
+
+ is_wide = ((double) DLG_PREVIEW_HEIGHT * width >=
+ (double) DLG_PREVIEW_WIDTH * height);
+
+ if (is_wide)
+ {
+ offy = ((double) width * DLG_PREVIEW_HEIGHT / DLG_PREVIEW_WIDTH) / 2.0;
+
+ dlg->pwin.x0 = 0;
+ dlg->pwin.x1 = width;
+ dlg->pwin.y0 = height / 2.0 - offy;
+ dlg->pwin.y1 = height / 2.0 + offy;
+ }
+ else
+ {
+ offx = ((double) height * DLG_PREVIEW_WIDTH / DLG_PREVIEW_HEIGHT) / 2.0;
+
+ dlg->pwin.x0 = width / 2.0 - offx; dlg->pwin.x1 = width / 2.0 + offx;
+ dlg->pwin.y0 = 0;
+ dlg->pwin.y1 = height;
+ }
+}
+
+static void
+dlg_preview_realize (GtkWidget *widget)
+{
+ GdkDisplay *display = gtk_widget_get_display (widget);
+ GdkCursor *cursor = gdk_cursor_new_for_display (display, GDK_CROSSHAIR);
+
+ gdk_window_set_cursor (gtk_widget_get_window (widget), cursor);
+ gdk_cursor_unref (cursor);
+}
+
+static gboolean
+dlg_preview_handle_event (GtkWidget *widget,
+ GdkEvent *event)
+{
+ GdkEventButton *bevent;
+ gint bx, by, x, y;
+
+ switch (event->type)
+ {
+ case GDK_BUTTON_PRESS:
+ bevent = (GdkEventButton *) event;
+ bx = bevent->x;
+ by = bevent->y;
+
+ /* convert widget coord to drawable coord */
+ x = dlg->pwin.x0 + (double) (dlg->pwin.x1 - dlg->pwin.x0)
+ * bx / DLG_PREVIEW_WIDTH;
+ y = dlg->pwin.y0 + (double) (dlg->pwin.y1 - dlg->pwin.y0)
+ * by / DLG_PREVIEW_HEIGHT;
+
+ if ((x != pvals.xcenter || y != pvals.ycenter))
+ {
+ if (x != pvals.xcenter)
+ {
+ pvals.xcenter = x;
+ gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (dlg->sizeentry),
+ 0, x);
+ }
+ if (y != pvals.ycenter)
+ {
+ pvals.ycenter = y;
+ gimp_size_entry_set_refval (GIMP_SIZE_ENTRY (dlg->sizeentry),
+ 1, y);
+ }
+ dlg_preview_update ();
+ }
+ return TRUE;
+ default:
+ break;
+ }
+ return FALSE;
+}
+
+static void
+dlg_preview_update (void)
+{
+ if (!dlg->init && dlg->update_preview)
+ {
+ dlg->init_params_done = FALSE;
+ preview_render_start (dlg->preview);
+ }
+}
+
+/* preview callbacks */
+static gint
+dlg_preview_init_func (Preview *preview, gpointer data)
+{
+ /* call init_params first, and iterate init_progress while
+ it returns true */
+ if (dlg->init_params_done == FALSE)
+ {
+ calc_init_params (dlg->gflare,
+ CALC_GLOW | CALC_RAYS | CALC_SFLARE,
+ pvals.xcenter, pvals.ycenter,
+ pvals.radius, pvals.rotation, pvals.hue,
+ pvals.vangle, pvals.vlength);
+ dlg->init_params_done = TRUE;
+ return TRUE;
+ }
+ return calc_init_progress ();
+}
+
+/* render preview
+ do what "preview" means, ie. render lense flare effect onto drawable */
+static void
+dlg_preview_render_func (Preview *preview,
+ guchar *dest,
+ gint y,
+ gpointer data)
+{
+ GeglBuffer *src_buffer = data;
+ gint width = gimp_drawable_width (drawable_ID);
+ gint height = gimp_drawable_height (drawable_ID);
+ gint x;
+ gint dx, dy; /* drawable x, y */
+ guchar *src_row, *src;
+ guchar src_pix[4], dest_pix[4];
+ gint b;
+
+ dy = (dlg->pwin.y0 +
+ (gdouble) (dlg->pwin.y1 - dlg->pwin.y0) * y / DLG_PREVIEW_HEIGHT);
+
+ if (dy < 0 || dy >= height)
+ {
+ memset (dest, GRAY50, 3 * DLG_PREVIEW_WIDTH);
+ return;
+ }
+
+ src_row = g_new (guchar, dinfo.bpp * width);
+
+ gegl_buffer_get (src_buffer, GEGL_RECTANGLE (0, dy, width, 1), 1.0,
+ dinfo.format, src_row,
+ GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
+
+ for (x = 0; x < DLG_PREVIEW_HEIGHT; x++)
+ {
+ dx = (dlg->pwin.x0 +
+ (double) (dlg->pwin.x1 - dlg->pwin.x0) * x / DLG_PREVIEW_WIDTH);
+
+ if (dx < 0 || dx >= width)
+ {
+ for (b = 0; b < 3; b++)
+ *dest++ = GRAY50;
+ continue;
+ }
+
+ /* Get drawable pix value */
+ src = &src_row[dx * dinfo.bpp];
+
+ for (b = 0; b < 3; b++)
+ src_pix[b] = dinfo.is_color ? src[b] : src[0];
+ src_pix[3] = dinfo.has_alpha ? src[dinfo.bpp - 1] : OPAQUE;
+
+ /* Get GFlare pix value */
+
+ calc_gflare_pix (dest_pix, dx, dy, src_pix);
+
+ /* Draw gray check if needed */
+ preview_rgba_to_rgb (dest, x, y, dest_pix);
+ dest += 3;
+ }
+
+ g_free (src_row);
+}
+
+static void
+dlg_preview_deinit_func (Preview *preview, gpointer data)
+{
+ if (dlg->init_params_done)
+ {
+ calc_deinit ();
+ dlg->init_params_done = TRUE;
+ }
+}
+
+/*****************************************/
+/** Main Dialog / Settings Page **/
+/*****************************************/
+
+static void
+dlg_make_page_settings (GFlareDialog *dlg,
+ GtkWidget *notebook)
+{
+ GtkWidget *main_vbox;
+ GtkWidget *frame;
+ GtkWidget *center;
+ GtkWidget *chain;
+ GtkWidget *table;
+ GtkWidget *button;
+ GtkWidget *asup_table;
+ GtkObject *adj;
+ gdouble xres, yres;
+ gint row;
+
+ main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
+
+ frame = gimp_frame_new (_("Center"));
+ gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ gimp_image_get_resolution (image_ID, &xres, &yres);
+
+ center = dlg->sizeentry =
+ gimp_coordinates_new (gimp_image_get_unit (image_ID), "%a",
+ TRUE, TRUE, 75, GIMP_SIZE_ENTRY_UPDATE_SIZE,
+
+ FALSE, FALSE,
+
+ _("_X:"), pvals.xcenter, xres,
+ -GIMP_MAX_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE,
+ 0, gimp_drawable_width (drawable_ID),
+
+ _("_Y:"), pvals.ycenter, yres,
+ -GIMP_MAX_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE,
+ 0, gimp_drawable_height (drawable_ID));
+
+ chain = GTK_WIDGET (GIMP_COORDINATES_CHAINBUTTON (center));
+
+ gtk_container_add (GTK_CONTAINER (frame), center);
+ g_signal_connect (center, "value-changed",
+ G_CALLBACK (dlg_position_entry_callback),
+ NULL);
+ g_signal_connect (center, "refval-changed",
+ G_CALLBACK (dlg_position_entry_callback),
+ NULL);
+ gtk_widget_hide (chain);
+ gtk_widget_show (center);
+
+ frame = gimp_frame_new (_("Parameters"));
+ gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (5, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+ gtk_widget_show (table);
+
+ row = 0;
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("_Radius:"), SCALE_WIDTH, 6,
+ pvals.radius, 0.0,
+ gimp_drawable_width (drawable_ID) / 2,
+ 1.0, 10.0, 1,
+ FALSE, 0.0, GIMP_MAX_IMAGE_SIZE,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &pvals.radius);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dlg_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Ro_tation:"), SCALE_WIDTH, 6,
+ pvals.rotation, -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &pvals.rotation);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dlg_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("_Hue rotation:"), SCALE_WIDTH, 6,
+ pvals.hue, -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &pvals.hue);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dlg_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Vector _angle:"), SCALE_WIDTH, 6,
+ pvals.vangle, 0.0, 359.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &pvals.vangle);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dlg_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Vector _length:"), SCALE_WIDTH, 6,
+ pvals.vlength, 1, 1000, 1.0, 10.0, 1,
+ FALSE, 1, GIMP_MAX_IMAGE_SIZE,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &pvals.vlength);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (dlg_preview_update),
+ NULL);
+
+ /**
+ *** Asupsample settings
+ *** This code is stolen from gimp-0.99.x/app/blend.c
+ **/
+
+ /* asupsample frame */
+ frame = dlg->asupsample_frame = gimp_frame_new (NULL);
+ gtk_box_pack_start (GTK_BOX (main_vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ button = gtk_check_button_new_with_mnemonic (_("A_daptive supersampling"));
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button),
+ pvals.use_asupsample);
+ gtk_frame_set_label_widget (GTK_FRAME (frame), button);
+ gtk_widget_show (button);
+
+ asup_table = gtk_table_new (2, 3, FALSE);
+ gtk_table_set_col_spacings (GTK_TABLE (asup_table), 6);
+ gtk_table_set_row_spacings (GTK_TABLE (asup_table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), asup_table);
+ gtk_widget_show (asup_table);
+
+ g_signal_connect (button, "toggled",
+ G_CALLBACK (gimp_toggle_button_update),
+ &pvals.use_asupsample);
+
+ g_object_bind_property (button, "active",
+ asup_table, "sensitive",
+ G_BINDING_SYNC_CREATE);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (asup_table), 0, 0,
+ _("_Max depth:"), -1, 4,
+ pvals.asupsample_max_depth,
+ 1.0, 10.0, 1.0, 1.0, 0,
+ TRUE, 0.0, 0.0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_int_adjustment_update),
+ &pvals.asupsample_max_depth);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (asup_table), 0, 1,
+ _("_Threshold"), -1, 4,
+ pvals.asupsample_threshold,
+ 0.0, 4.0, 0.01, 0.01, 2,
+ TRUE, 0.0, 0.0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &pvals.asupsample_threshold);
+
+ gtk_notebook_append_page (GTK_NOTEBOOK (notebook), main_vbox,
+ gtk_label_new_with_mnemonic (_("_Settings")));
+ gtk_widget_show (main_vbox);
+}
+
+static void
+dlg_position_entry_callback (GtkWidget *widget, gpointer data)
+{
+ gint x, y;
+
+ x = RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0));
+ y = RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1));
+
+ DEBUG_PRINT (("dlg_position_entry_callback\n"));
+
+ if (pvals.xcenter != x ||
+ pvals.ycenter != y)
+ {
+ pvals.xcenter = x;
+ pvals.ycenter = y;
+
+ dlg_preview_update ();
+ }
+}
+
+static void
+dlg_update_preview_callback (GtkWidget *widget,
+ gpointer data)
+{
+ gimp_toggle_button_update (widget, data);
+
+ dlg_preview_update ();
+}
+
+/*****************************************/
+/** Main Dialog / Selector Page **/
+/*****************************************/
+
+static void
+dlg_make_page_selector (GFlareDialog *dlg,
+ GtkWidget *notebook)
+{
+ GtkWidget *vbox;
+ GtkWidget *hbox;
+ GtkWidget *listbox;
+ GtkListStore *list;
+ GtkWidget *listview;
+ GtkCellRenderer *renderer;
+ GtkTreeViewColumn *column;
+ GtkWidget *button;
+ gint i;
+
+ static struct
+ {
+ const gchar *label;
+ GCallback callback;
+ }
+ buttons[] =
+ {
+ { N_("_New"), G_CALLBACK (dlg_selector_new_callback) },
+ { N_("_Edit"), G_CALLBACK (dlg_selector_edit_callback) },
+ { N_("_Copy"), G_CALLBACK (dlg_selector_copy_callback) },
+ { N_("_Delete"), G_CALLBACK (dlg_selector_delete_callback) }
+ };
+
+ DEBUG_PRINT (("dlg_make_page_selector\n"));
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+
+ /*
+ * List Box
+ */
+
+ listbox = gtk_scrolled_window_new (NULL, NULL);
+ gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (listbox),
+ GTK_POLICY_AUTOMATIC,
+ GTK_POLICY_AUTOMATIC);
+
+ gtk_widget_set_size_request (listbox, DLG_LISTBOX_WIDTH, DLG_LISTBOX_HEIGHT);
+ gtk_box_pack_start (GTK_BOX (vbox), listbox, TRUE, TRUE, 0);
+
+ list = dlg->selector_list = gtk_list_store_new (2,
+ G_TYPE_STRING,
+ G_TYPE_POINTER);
+ listview = gtk_tree_view_new_with_model (GTK_TREE_MODEL (list));
+ gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (listview), FALSE);
+
+ gtk_container_add (GTK_CONTAINER (listbox), listview);
+ gtk_widget_show (listbox);
+ dlg->selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (listview));
+ gtk_tree_selection_set_mode (dlg->selection, GTK_SELECTION_BROWSE);
+ gtk_widget_show (listview);
+ g_signal_connect (dlg->selection, "changed",
+ G_CALLBACK (dlg_selector_list_item_callback),
+ NULL);
+
+ renderer = gtk_cell_renderer_text_new ();
+
+ /* Note: the title isn't shown, so it doesn't need to be translated. */
+ column = gtk_tree_view_column_new_with_attributes ("GFlare", renderer,
+ "text", 0,
+ NULL);
+ gtk_tree_view_append_column (GTK_TREE_VIEW (listview), column);
+
+ dlg_selector_setup_listbox ();
+
+ /*
+ * The buttons for the possible listbox operations
+ */
+
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+ gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+ gtk_widget_show (hbox);
+
+ for (i = 0; i < G_N_ELEMENTS (buttons); i++)
+ {
+ button = gtk_button_new_with_mnemonic (gettext (buttons[i].label));
+ gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
+ gtk_widget_show (button);
+
+ g_signal_connect (button, "clicked",
+ buttons[i].callback,
+ button);
+ }
+
+ gtk_widget_show (vbox);
+
+ gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
+ gtk_label_new_with_mnemonic (_("S_elector")));
+ gtk_widget_show (vbox);
+}
+
+/*
+ * Set up selector's listbox, according to gflares_list
+ */
+static void
+dlg_selector_setup_listbox (void)
+{
+ GList *list;
+ GFlare *gflare;
+ gint n;
+
+ list = gflares_list;
+ n = 0;
+
+ while (list)
+ {
+ GtkTreeIter iter;
+
+ gflare = list->data;
+
+ /*
+ dlg->gflare should be valid (ie. not NULL) here.
+ */
+ gtk_list_store_append (dlg->selector_list, &iter);
+
+ gtk_list_store_set (dlg->selector_list, &iter,
+ 0, gflare->name,
+ 1, gflare,
+ -1);
+ if (gflare == dlg->gflare)
+ gtk_tree_selection_select_iter (dlg->selection,
+ &iter);
+
+ list = list->next;
+ n++;
+ }
+}
+
+static void
+dlg_selector_list_item_callback (GtkTreeSelection *selection)
+{
+ GtkTreeIter iter;
+
+ if (gtk_tree_selection_get_selected (selection, NULL, &iter))
+ {
+ gtk_tree_model_get (GTK_TREE_MODEL (dlg->selector_list), &iter,
+ 1, &dlg->gflare, -1);
+ }
+
+ dlg_preview_update ();
+}
+
+/*
+ * "New" button in Selector page
+ */
+static void
+dlg_selector_new_callback (GtkWidget *widget,
+ gpointer data)
+{
+ GtkWidget *query_box;
+
+ query_box = gimp_query_string_box (_("New Gradient Flare"),
+ gtk_widget_get_toplevel (widget),
+ gimp_standard_help_func, PLUG_IN_PROC,
+ _("Enter a name for the new GFlare"),
+ _("Unnamed"),
+ NULL, NULL,
+ dlg_selector_new_ok_callback, dlg);
+ gtk_widget_show (query_box);
+}
+
+static void
+dlg_selector_new_ok_callback (GtkWidget *widget,
+ const gchar *new_name,
+ gpointer data)
+{
+ GFlare *gflare;
+ GtkTreeIter iter;
+ gint pos;
+
+ g_return_if_fail (new_name != NULL);
+
+ if (gflares_list_lookup (new_name))
+ {
+ g_message (_("The name '%s' is used already!"), new_name);
+ return;
+ }
+
+ gflare = gflare_new_with_default (new_name);
+
+ pos = gflares_list_insert (gflare);
+
+ gtk_list_store_insert (dlg->selector_list, &iter, pos);
+ gtk_list_store_set (dlg->selector_list, &iter,
+ 0, gflare->name,
+ 1, gflare,
+ -1);
+ gtk_tree_selection_select_iter (dlg->selection, &iter);
+
+ dlg->gflare = gflare;
+ dlg_preview_update ();
+}
+
+/*
+ * "Edit" button in Selector page
+ */
+static void
+dlg_selector_edit_callback (GtkWidget *widget,
+ gpointer data)
+{
+ preview_render_end (dlg->preview);
+ gtk_widget_set_sensitive (dlg->shell, FALSE);
+ ed_run (GTK_WINDOW (dlg->shell),
+ dlg->gflare, dlg_selector_edit_done_callback, NULL);
+}
+
+static void
+dlg_selector_edit_done_callback (gint updated,
+ gpointer data)
+{
+ gtk_widget_set_sensitive (dlg->shell, TRUE);
+ if (updated)
+ {
+ gflare_save (dlg->gflare);
+ }
+ dlg_preview_update ();
+}
+
+/*
+ * "Copy" button in Selector page
+ */
+static void
+dlg_selector_copy_callback (GtkWidget *widget,
+ gpointer data)
+{
+ GtkWidget *query_box;
+ gchar *name;
+
+ name = g_strdup_printf ("%s copy", dlg->gflare->name);
+
+ query_box = gimp_query_string_box (_("Copy Gradient Flare"),
+ gtk_widget_get_toplevel (widget),
+ gimp_standard_help_func, PLUG_IN_PROC,
+ _("Enter a name for the copied GFlare"),
+ name,
+ NULL, NULL,
+ dlg_selector_copy_ok_callback, dlg);
+ g_free (name);
+
+ gtk_widget_show (query_box);
+}
+
+static void
+dlg_selector_copy_ok_callback (GtkWidget *widget,
+ const gchar *copy_name,
+ gpointer data)
+{
+ GFlare *gflare;
+ GtkTreeIter iter;
+ gint pos;
+
+ g_return_if_fail (copy_name != NULL);
+
+ if (gflares_list_lookup (copy_name))
+ {
+ g_warning (_("The name '%s' is used already!"), copy_name);
+ return;
+ }
+
+ gflare = gflare_dup (dlg->gflare, copy_name);
+
+ pos = gflares_list_insert (gflare);
+ gtk_list_store_insert (dlg->selector_list, &iter, pos);
+ gtk_list_store_set (dlg->selector_list, &iter,
+ 0, gflare->name,
+ 1, gflare,
+ -1);
+ gtk_tree_selection_select_iter (dlg->selection, &iter);
+
+ dlg->gflare = gflare;
+ gflare_save (dlg->gflare);
+ dlg_preview_update ();
+}
+
+/*
+ * "Delete" button in Selector page
+ */
+static void
+dlg_selector_delete_callback (GtkWidget *widget,
+ gpointer data)
+{
+ GtkWidget *dialog;
+ gchar *str;
+
+ if (num_gflares <= 1)
+ {
+ g_message (_("Cannot delete!! There must be at least one GFlare."));
+ return;
+ }
+
+ gtk_widget_set_sensitive (dlg->shell, FALSE);
+
+ str = g_strdup_printf (_("Are you sure you want to delete "
+ "\"%s\" from the list and from disk?"),
+ dlg->gflare->name);
+
+ dialog = gimp_query_boolean_box (_("Delete Gradient Flare"),
+ dlg->shell,
+ gimp_standard_help_func, PLUG_IN_PROC,
+ GIMP_ICON_DIALOG_QUESTION,
+ str,
+ _("_Delete"), _("_Cancel"),
+ NULL, NULL,
+ dlg_selector_do_delete_callback,
+ NULL);
+
+ g_free (str);
+
+ gtk_widget_show (dialog);
+}
+
+static void
+dlg_selector_do_delete_callback (GtkWidget *widget,
+ gboolean delete,
+ gpointer data)
+{
+ GFlare *old_gflare;
+ GList *tmp;
+ gint i, new_i;
+ GtkTreeIter iter;
+
+ gtk_widget_set_sensitive (dlg->shell, TRUE);
+
+ if (!delete)
+ return;
+
+ i = gflares_list_index (dlg->gflare);
+
+ if (i >= 0)
+ {
+ /* Remove current gflare from gflares_list and free it */
+ old_gflare = dlg->gflare;
+ gflares_list_remove (dlg->gflare);
+ dlg->gflare = NULL;
+
+ /* Remove from listbox */
+ if (!gtk_tree_model_iter_nth_child (GTK_TREE_MODEL (dlg->selector_list),
+ &iter, NULL, i))
+ {
+ g_warning ("Unsynchronized lists. Bad things will happen!");
+ return;
+ }
+ gtk_list_store_remove (dlg->selector_list, &iter);
+
+ /* Calculate new position of gflare and select it */
+ new_i = (i < num_gflares) ? i : num_gflares - 1;
+ if ((tmp = g_list_nth (gflares_list, new_i)))
+ dlg->gflare = tmp->data;
+ if (!gtk_tree_model_iter_nth_child (GTK_TREE_MODEL (dlg->selector_list),
+ &iter, NULL, i))
+ {
+ g_warning ("Unsynchronized lists. Bad things will happen!");
+ return;
+ }
+ gtk_tree_selection_select_iter (dlg->selection,
+ &iter);
+
+ /* Delete old one from disk and memory */
+ if (old_gflare->filename)
+ g_unlink (old_gflare->filename);
+
+ gflare_free (old_gflare);
+
+ /* Update */
+ dlg_preview_update ();
+ }
+ else
+ {
+ g_warning (_("not found %s in gflares_list"), dlg->gflare->name);
+ }
+}
+
+/*************************************************************************/
+/** **/
+/** GFlare Editor **/
+/** +++ ed **/
+/** **/
+/*************************************************************************/
+
+/*
+ This is gflare editor dialog, one which opens by clicking
+ "Edit" button on the selector page in the main dialog.
+ */
+
+static void
+ed_run (GtkWindow *parent,
+ GFlare *target_gflare,
+ GFlareEditorCallback callback,
+ gpointer calldata)
+{
+ GtkWidget *shell;
+ GtkWidget *hbox;
+ GtkWidget *frame;
+ GtkWidget *abox;
+ GtkWidget *notebook;
+
+ if (!ed)
+ ed = g_new0 (GFlareEditor, 1);
+ ed->init = TRUE;
+ ed->run = FALSE;
+ ed->target_gflare = target_gflare;
+ ed->gflare = gflare_dup (target_gflare, target_gflare->name);
+ ed->callback = callback;
+ ed->calldata = calldata;
+
+ /*
+ * Dialog Shell
+ */
+ ed->shell =
+ shell = gimp_dialog_new (_("Gradient Flare Editor"), PLUG_IN_ROLE,
+ GTK_WIDGET (parent), 0,
+ gimp_standard_help_func, PLUG_IN_PROC,
+
+ _("_Rescan Gradients"), RESPONSE_RESCAN,
+ _("_Cancel"), GTK_RESPONSE_CANCEL,
+ _("_OK"), GTK_RESPONSE_OK,
+
+ NULL);
+
+ gtk_dialog_set_alternative_button_order (GTK_DIALOG (shell),
+ RESPONSE_RESCAN,
+ GTK_RESPONSE_OK,
+ GTK_RESPONSE_CANCEL,
+ -1);
+
+ g_signal_connect (shell, "response",
+ G_CALLBACK (ed_response),
+ ed);
+ g_signal_connect (shell, "destroy",
+ G_CALLBACK (ed_destroy_callback),
+ ed);
+
+ /*
+ * main hbox
+ */
+
+ hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (hbox), 12);
+ gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (shell))),
+ hbox, FALSE, FALSE, 0);
+ gtk_widget_show (hbox);
+
+ /*
+ * Preview
+ */
+
+ abox = gtk_alignment_new (0.0, 0.0, 0.0, 0.0);
+ gtk_box_pack_start (GTK_BOX (hbox), abox, FALSE, FALSE, 0);
+ gtk_widget_show (abox);
+
+ frame = gtk_frame_new (NULL);
+ gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+ gtk_container_add (GTK_CONTAINER (abox), frame);
+ gtk_widget_show (frame);
+
+ ed->preview = preview_new (ED_PREVIEW_WIDTH, ED_PREVIEW_HEIGHT,
+ ed_preview_init_func, NULL,
+ ed_preview_render_func, NULL,
+ ed_preview_deinit_func, NULL);
+ gtk_widget_set_events (GTK_WIDGET (ed->preview->widget), DLG_PREVIEW_MASK);
+ gtk_container_add (GTK_CONTAINER (frame), ed->preview->widget);
+ g_signal_connect (ed->preview->widget, "event",
+ G_CALLBACK (dlg_preview_handle_event),
+ NULL);
+ ed_preview_calc_window ();
+
+ /*
+ * Notebook
+ */
+ notebook = ed->notebook = gtk_notebook_new ();
+ gtk_notebook_set_tab_pos (GTK_NOTEBOOK (notebook), GTK_POS_TOP);
+ gtk_box_pack_start (GTK_BOX (hbox), notebook, TRUE, TRUE, 0);
+ gtk_widget_show (notebook);
+
+ ed_make_page_general (ed, notebook);
+ ed_make_page_glow (ed, notebook);
+ ed_make_page_rays (ed, notebook);
+ ed_make_page_sflare (ed, notebook);
+
+ gtk_widget_show (shell);
+
+ ed->init = FALSE;
+ ed_preview_update ();
+}
+
+static void
+ed_destroy_callback (GtkWidget *widget,
+ GFlareEditor *ed)
+{
+ preview_free (ed->preview);
+ gflare_free (ed->gflare);
+ if (ed->callback)
+ (*ed->callback) (ed->run, ed->calldata);
+}
+
+static void
+ed_response (GtkWidget *widget,
+ gint response_id,
+ GFlareEditor *ed)
+{
+ switch (response_id)
+ {
+ case RESPONSE_RESCAN:
+ ed->init = TRUE;
+ gradient_menu_rescan ();
+ ed->init = FALSE;
+ ed_preview_update ();
+ gtk_widget_queue_draw (ed->notebook);
+ break;
+
+ case GTK_RESPONSE_OK:
+ ed->run = TRUE;
+ gflare_copy (ed->target_gflare, ed->gflare);
+ gtk_widget_destroy (ed->shell);
+ break;
+
+ default:
+ gtk_widget_destroy (ed->shell);
+ break;
+ }
+}
+
+static void
+ed_make_page_general (GFlareEditor *ed,
+ GtkWidget *notebook)
+{
+ GFlare *gflare = ed->gflare;
+ GtkWidget *vbox;
+ GtkWidget *frame;
+ GtkWidget *table;
+ GtkWidget *combo;
+ GtkObject *adj;
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+
+ /* Glow */
+
+ frame = gimp_frame_new (_("Glow Paint Options"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (2, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+ gtk_widget_show (table);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
+ _("Opacity:"), SCALE_WIDTH, 6,
+ gflare->glow_opacity, 0.0, 100.0, 1.0, 10.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->glow_opacity);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ combo = ed_mode_menu_new (&gflare->glow_mode);
+ gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+ _("Paint mode:"), 0.0, 0.5, combo, 1, FALSE);
+
+ /* Rays */
+
+ frame = gimp_frame_new (_("Rays Paint Options"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (2, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+ gtk_widget_show (table);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
+ _("Opacity:"), SCALE_WIDTH, 6,
+ gflare->rays_opacity, 0.0, 100.0, 1.0, 10.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->rays_opacity);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ combo = ed_mode_menu_new (&gflare->rays_mode);
+ gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+ _("Paint mode:"), 0.0, 0.5, combo, 1, FALSE);
+
+ /* Rays */
+
+ frame = gimp_frame_new (_("Second Flares Paint Options"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (2, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+ gtk_widget_show (table);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, 0,
+ _("Opacity:"), SCALE_WIDTH, 6,
+ gflare->sflare_opacity, 0.0, 100.0, 1.0, 10.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->sflare_opacity);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ combo = ed_mode_menu_new (&gflare->sflare_mode);
+ gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+ _("Paint mode:"), 0.0, 0.5, combo, 1, FALSE);
+
+ gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
+ gtk_label_new_with_mnemonic (_("_General")));
+ g_signal_connect (vbox, "map",
+ G_CALLBACK (ed_page_map_callback),
+ (gpointer) PAGE_GENERAL);
+ gtk_widget_show (vbox);
+}
+
+static void
+ed_make_page_glow (GFlareEditor *ed,
+ GtkWidget *notebook)
+{
+ GFlare *gflare = ed->gflare;
+ GradientMenu *gm;
+ GtkWidget *vbox;
+ GtkWidget *frame;
+ GtkWidget *table;
+ GtkObject *adj;
+ gint row;
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+
+ /*
+ * Gradient Menus
+ */
+
+ frame = gimp_frame_new (_("Gradients"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (3, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->glow_radial, gflare->glow_radial);
+ ed_put_gradient_menu (table, 0, 0, _("Radial gradient:"), gm);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->glow_angular, gflare->glow_angular);
+ ed_put_gradient_menu (table, 0, 1, _("Angular gradient:"), gm);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->glow_angular_size, gflare->glow_angular_size);
+ ed_put_gradient_menu (table, 0, 2, _("Angular size gradient:"), gm);
+
+ gtk_widget_show (table);
+
+ /*
+ * Scales
+ */
+
+ frame = gimp_frame_new (_("Parameters"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (3, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+
+ row = 0;
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Size (%):"), SCALE_WIDTH, 6,
+ gflare->glow_size, 0.0, 200.0, 1.0, 10.0, 1,
+ FALSE, 0, G_MAXINT,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->glow_size);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Rotation:"), SCALE_WIDTH, 6,
+ gflare->glow_rotation, -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->glow_rotation);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Hue rotation:"), SCALE_WIDTH, 6,
+ gflare->glow_hue, -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->glow_hue);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ gtk_widget_show (table);
+
+ gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
+ gtk_label_new_with_mnemonic (_("G_low")));
+ g_signal_connect (vbox, "map",
+ G_CALLBACK (ed_page_map_callback),
+ (gpointer) PAGE_GLOW);
+ gtk_widget_show (vbox);
+}
+
+static void
+ed_make_page_rays (GFlareEditor *ed,
+ GtkWidget *notebook)
+{
+ GFlare *gflare = ed->gflare;
+ GradientMenu *gm;
+ GtkWidget *vbox;
+ GtkWidget *frame;
+ GtkWidget *table;
+ GtkObject *adj;
+ gint row;
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+
+ /*
+ * Gradient Menus
+ */
+
+ frame = gimp_frame_new (_("Gradients"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (3, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+
+ row = 0;
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->rays_radial, gflare->rays_radial);
+ ed_put_gradient_menu (table, 0, row++, _("Radial gradient:"), gm);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->rays_angular, gflare->rays_angular);
+ ed_put_gradient_menu (table, 0, row++, _("Angular gradient:"), gm);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->rays_angular_size, gflare->rays_angular_size);
+ ed_put_gradient_menu (table, 0, row++, _("Angular size gradient:"), gm);
+
+ gtk_widget_show (table);
+
+ /*
+ * Scales
+ */
+
+ frame = gimp_frame_new (_("Parameters"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (5, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+
+ row = 0;
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Size (%):"), SCALE_WIDTH, 6,
+ gflare->rays_size, 0.0, 200.0, 1.0, 10.0, 1,
+ FALSE, 0, G_MAXINT,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->rays_size);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Rotation:"), SCALE_WIDTH, 6,
+ gflare->rays_rotation,
+ -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->rays_rotation);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Hue rotation:"), SCALE_WIDTH, 6,
+ gflare->rays_hue, -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->rays_hue);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("# of Spikes:"), SCALE_WIDTH, 6,
+ gflare->rays_nspikes, 1, 300, 1.0, 10.0, 0,
+ FALSE, 0, G_MAXINT,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_int_adjustment_update),
+ &gflare->rays_nspikes);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Spike thickness:"), SCALE_WIDTH, 6,
+ gflare->rays_thickness, 1.0, 100.0, 1.0, 10.0, 1,
+ FALSE, 0, GIMP_MAX_IMAGE_SIZE,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->rays_thickness);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ gtk_widget_show (table);
+
+ gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
+ gtk_label_new_with_mnemonic (_("_Rays")));
+ g_signal_connect (vbox, "map",
+ G_CALLBACK (ed_page_map_callback),
+ (gpointer) PAGE_RAYS);
+ gtk_widget_show (vbox);
+}
+
+static void
+ed_make_page_sflare (GFlareEditor *ed,
+ GtkWidget *notebook)
+{
+ GFlare *gflare = ed->gflare;
+ GradientMenu *gm;
+ GtkWidget *vbox;
+ GtkWidget *table;
+ GtkWidget *frame;
+ GtkWidget *shape_vbox;
+ GSList *shape_group = NULL;
+ GtkWidget *polygon_hbox;
+ GtkWidget *seed_hbox;
+ GtkWidget *toggle;
+ GtkWidget *label;
+ GtkWidget *seed;
+ GtkWidget *entry;
+ GtkObject *adj;
+ gchar buf[256];
+ gint row;
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+ gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+
+ /*
+ * Gradient Menus
+ */
+
+ frame = gimp_frame_new (_("Gradients"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (3, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->sflare_radial, gflare->sflare_radial);
+ ed_put_gradient_menu (table, 0, 0, _("Radial gradient:"), gm);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->sflare_sizefac, gflare->sflare_sizefac);
+ ed_put_gradient_menu (table, 0, 1, _("Size factor gradient:"), gm);
+
+ gm = gradient_menu_new ((GradientMenuCallback) &ed_gradient_menu_callback,
+ gflare->sflare_probability, gflare->sflare_probability);
+ ed_put_gradient_menu (table, 0, 2, _("Probability gradient:"), gm);
+
+ gtk_widget_show (table);
+
+ /*
+ * Scales
+ */
+
+ frame = gimp_frame_new (_("Parameters"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ table = gtk_table_new (3, 3, FALSE);
+ gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+ gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+ gtk_container_add (GTK_CONTAINER (frame), table);
+
+ row = 0;
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Size (%):"), SCALE_WIDTH, 6,
+ gflare->sflare_size, 0.0, 200.0, 1.0, 10.0, 1,
+ FALSE, 0, G_MAXINT,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->sflare_size);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Rotation:"), SCALE_WIDTH, 6,
+ gflare->sflare_rotation,
+ -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->sflare_rotation);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ adj = gimp_scale_entry_new (GTK_TABLE (table), 0, row++,
+ _("Hue rotation:"), SCALE_WIDTH, 6,
+ gflare->sflare_hue, -180.0, 180.0, 1.0, 15.0, 1,
+ TRUE, 0, 0,
+ NULL, NULL);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (gimp_double_adjustment_update),
+ &gflare->sflare_hue);
+ g_signal_connect (adj, "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ gtk_widget_show (table);
+
+ /*
+ * Shape Radio Button Frame
+ */
+
+ frame = gimp_frame_new (_("Shape of Second Flares"));
+ gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
+ gtk_widget_show (frame);
+
+ shape_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2);
+ gtk_container_add (GTK_CONTAINER (frame), shape_vbox);
+ gtk_widget_show (shape_vbox);
+
+ toggle = gtk_radio_button_new_with_label (shape_group, _("Circle"));
+ shape_group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (toggle));
+ g_object_set_data (G_OBJECT (toggle), "gimp-item-data",
+ GINT_TO_POINTER (GF_CIRCLE));
+ g_signal_connect (toggle, "toggled",
+ G_CALLBACK (ed_shape_radio_callback),
+ &gflare->sflare_shape);
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
+ gflare->sflare_shape == GF_CIRCLE);
+ gtk_box_pack_start (GTK_BOX (shape_vbox), toggle, FALSE, FALSE, 0);
+ gtk_widget_show (toggle);
+
+ polygon_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+ gtk_box_pack_start (GTK_BOX (shape_vbox), polygon_hbox, FALSE, FALSE, 0);
+ gtk_widget_show (polygon_hbox);
+
+ toggle = ed->polygon_toggle =
+ gtk_radio_button_new_with_label (shape_group, _("Polygon"));
+ shape_group = gtk_radio_button_get_group (GTK_RADIO_BUTTON (toggle));
+ g_object_set_data (G_OBJECT (toggle), "gimp-item-data",
+ GINT_TO_POINTER (GF_POLYGON));
+ g_signal_connect (toggle, "toggled",
+ G_CALLBACK (ed_shape_radio_callback),
+ &gflare->sflare_shape);
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
+ gflare->sflare_shape == GF_POLYGON);
+ gtk_box_pack_start (GTK_BOX (polygon_hbox), toggle, FALSE, FALSE, 0);
+ gtk_widget_show (toggle);
+
+ entry = ed->polygon_entry = gtk_entry_new ();
+ gtk_entry_set_width_chars (GTK_ENTRY (entry), 4);
+ g_snprintf (buf, sizeof (buf), "%d", gflare->sflare_nverts);
+ gtk_entry_set_text (GTK_ENTRY (entry), buf);
+ g_signal_connect (entry, "changed",
+ G_CALLBACK (ed_ientry_callback),
+ &gflare->sflare_nverts);
+ gtk_box_pack_start (GTK_BOX (polygon_hbox), entry, FALSE, FALSE, 0);
+ gtk_widget_show (entry);
+
+ g_object_bind_property (toggle, "active",
+ entry, "sensitive",
+ G_BINDING_SYNC_CREATE);
+
+ /*
+ * Random Seed Entry
+ */
+
+ seed_hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+ gtk_box_pack_start (GTK_BOX (vbox), seed_hbox, FALSE, FALSE, 0);
+ gtk_widget_show (seed_hbox);
+
+ label = gtk_label_new (_("Random seed:"));
+ gtk_label_set_xalign (GTK_LABEL (label), 0.0);
+ gtk_box_pack_start (GTK_BOX (seed_hbox), label, FALSE, FALSE, 0);
+ gtk_widget_show (label);
+
+ seed = gimp_random_seed_new (&gflare->sflare_seed, &gflare->random_seed);
+ gtk_box_pack_start (GTK_BOX (seed_hbox), seed, FALSE, TRUE, 0);
+ gtk_widget_show (seed);
+
+ g_signal_connect (GIMP_RANDOM_SEED_SPINBUTTON_ADJ (seed), "value-changed",
+ G_CALLBACK (ed_preview_update),
+ NULL);
+
+ gtk_notebook_append_page (GTK_NOTEBOOK (notebook), vbox,
+ gtk_label_new_with_mnemonic (_("_Second Flares")));
+ g_signal_connect (vbox, "map",
+ G_CALLBACK (ed_page_map_callback),
+ (gpointer) PAGE_SFLARE);
+ gtk_widget_show (vbox);
+}
+
+GtkWidget *
+ed_mode_menu_new (GFlareMode *mode_var)
+{
+ GtkWidget *combo = gimp_int_combo_box_new_array (GF_NUM_MODES,
+ gflare_menu_modes);
+
+ gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (combo), *mode_var,
+ G_CALLBACK (ed_mode_menu_callback),
+ mode_var);
+
+ return combo;
+}
+
+/*
+ puts gradient menu with caption into table
+ occupies 1 row and 3 cols in table
+ */
+static void
+ed_put_gradient_menu (GtkWidget *table,
+ gint x,
+ gint y,
+ const gchar *caption,
+ GradientMenu *gm)
+{
+ GtkWidget *label;
+
+ label = gtk_label_new (caption);
+ gtk_label_set_xalign (GTK_LABEL (label), 1.0);
+ gtk_widget_show (label);
+
+ gtk_table_attach (GTK_TABLE (table), label,
+ x , x + 1, y, y + 1,
+ GTK_FILL, 0, 0, 0);
+ gtk_table_attach (GTK_TABLE (table), gm->preview,
+ x + 1, x + 2, y, y + 1,
+ 0, 0, 0, 0);
+ gtk_table_attach (GTK_TABLE (table), gm->combo,
+ x + 2, x + 3, y, y + 1,
+ 0, 0, 0, 0);
+}
+
+static void
+ed_mode_menu_callback (GtkWidget *widget,
+ gpointer data)
+{
+ gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), (gint *) data);
+
+ ed_preview_update ();
+}
+
+static void
+ed_gradient_menu_callback (const gchar *gradient_name,
+ gpointer data)
+{
+ gchar *dest_string = data;
+
+ /* @GRADIENT_NAME */
+ gradient_name_copy (dest_string, gradient_name);
+ ed_preview_update ();
+}
+
+static void
+ed_shape_radio_callback (GtkWidget *widget,
+ gpointer data)
+{
+ gimp_radio_button_update (widget, data);
+
+ ed_preview_update ();
+}
+
+static void
+ed_ientry_callback (GtkWidget *widget,
+ gpointer data)
+{
+ gint new_val;
+
+ new_val = atoi (gtk_entry_get_text (GTK_ENTRY (widget)));
+ *(gint *)data = new_val;
+
+ ed_preview_update ();
+}
+
+/*
+ NOTE: This is hack, because this code depends on internal "map"
+ signal of changing pages of gtknotebook.
+ */
+static void
+ed_page_map_callback (GtkWidget *widget,
+ gpointer data)
+{
+ gint page_num = GPOINTER_TO_INT (data);
+
+ DEBUG_PRINT(("ed_page_map_callback\n"));
+
+ ed->cur_page = page_num;
+ ed_preview_update ();
+}
+
+
+static void
+ed_preview_update (void)
+{
+ if (ed->init)
+ return;
+
+ ed->init_params_done = FALSE;
+ preview_render_start (ed->preview);
+}
+
+static gint
+ed_preview_init_func (Preview *preview, gpointer data)
+{
+ int type = 0;
+
+ if (ed->init_params_done == FALSE)
+ {
+ switch (ed->cur_page)
+ {
+ case PAGE_GENERAL:
+ type = (CALC_GLOW | CALC_RAYS | CALC_SFLARE);
+ break;
+ case PAGE_GLOW:
+ type = CALC_GLOW;
+ break;
+ case PAGE_RAYS:
+ type = CALC_RAYS;
+ break;
+ case PAGE_SFLARE:
+ type = CALC_SFLARE;
+ break;
+ default:
+ g_warning ("ed_preview_edit_func: bad page");
+ break;
+ }
+ calc_init_params (ed->gflare, type,
+ ED_PREVIEW_WIDTH/2, ED_PREVIEW_HEIGHT/2,
+ ED_PREVIEW_WIDTH/2, 0.0, 0.0,
+ pvals.vangle, pvals.vlength);
+
+ ed->init_params_done = TRUE;
+ return TRUE;
+ }
+ return calc_init_progress ();
+}
+
+static void
+ed_preview_deinit_func (Preview *preview, gpointer data)
+{
+ if (ed->init_params_done)
+ {
+ calc_deinit ();
+ ed->init_params_done = FALSE;
+ }
+}
+
+static void
+ed_preview_render_func (Preview *preview,
+ guchar *buffer,
+ gint y,
+ gpointer data)
+{
+ switch (ed->cur_page)
+ {
+ case PAGE_GENERAL:
+ ed_preview_render_general (buffer, y);
+ break;
+ case PAGE_GLOW:
+ ed_preview_render_glow (buffer, y);
+ break;
+ case PAGE_RAYS:
+ ed_preview_render_rays (buffer, y);
+ break;
+ case PAGE_SFLARE:
+ ed_preview_render_sflare (buffer, y);
+ break;
+ default:
+ g_warning ("hmm, bad page in ed_preview_render_func ()");
+ break;
+ }
+}
+
+static void
+ed_preview_render_general (guchar *buffer, gint y)
+{
+ int x, i;
+ guchar gflare_pix[4];
+ static guchar src_pix[4] = {0, 0, 0, OPAQUE};
+ int gflare_a;
+
+ for (x = 0; x < ED_PREVIEW_WIDTH; x++)
+ {
+ calc_gflare_pix (gflare_pix, x, y, src_pix);
+ gflare_a = gflare_pix[3];
+
+ for (i = 0; i < 3; i++)
+ {
+ *buffer++ = gflare_pix[i] * gflare_a / 255;
+ }
+ }
+}
+
+static void
+ed_preview_render_glow (guchar *buffer, gint y)
+{
+ int x, i;
+ guchar pix[4];
+
+ for (x = 0; x < ED_PREVIEW_WIDTH; x++)
+ {
+ calc_glow_pix (pix, x, y);
+ for (i = 0; i < 3; i++)
+ *buffer++ = pix[i] * pix[3] / 255;
+ }
+}
+
+static void
+ed_preview_render_rays (guchar *buffer, gint y)
+{
+ int x, i;
+ guchar pix[4];
+
+ for (x = 0; x < ED_PREVIEW_WIDTH; x++)
+ {
+ calc_rays_pix (pix, x, y);
+ for (i = 0; i < 3; i++)
+ *buffer++ = pix[i] * pix[3] / 255;
+ }
+}
+
+static void
+ed_preview_render_sflare (guchar *buffer, gint y)
+{
+ int x, i;
+ guchar pix[4];
+ static guchar src_pix[4] = {0, 0, 0, OPAQUE};
+
+ for (x = 0; x < ED_PREVIEW_WIDTH; x++)
+ {
+ calc_sflare_pix (pix, x, y, src_pix);
+ for (i = 0; i < 3; i++)
+ *buffer++ = pix[i] * pix[3] / 255;
+ }
+}
+
+/*************************************************************************/
+/** **/
+/** +++ Preview **/
+/** **/
+/*************************************************************************/
+
+/*
+ this is generic preview routines.
+ */
+
+
+/*
+ Routines to render the preview in background
+ */
+static Preview *
+preview_new (gint width,
+ gint height,
+ PreviewInitFunc init_func,
+ gpointer init_data,
+ PreviewRenderFunc render_func,
+ gpointer render_data,
+ PreviewDeinitFunc deinit_func,
+ gpointer deinit_data)
+{
+ Preview *preview;
+
+ preview = g_new0 (Preview, 1);
+
+ preview->widget = gimp_preview_area_new ();
+ gtk_widget_set_size_request (preview->widget, width, height);
+ gtk_widget_show (preview->widget);
+
+ preview->width = width;
+ preview->height = height;
+ preview->init_func = init_func;
+ preview->init_data = init_data;
+ preview->render_func = render_func;
+ preview->render_data = render_data;
+ preview->deinit_func = deinit_func;
+ preview->deinit_data = deinit_data;
+ preview->idle_tag = 0;
+ preview->buffer = g_new (guchar, width * 3);
+ preview->full_image_buffer = g_new (guchar, width * height * 3);
+
+ return preview;
+}
+
+static void
+preview_free (Preview *preview)
+{
+ preview_render_end (preview);
+ /* not destroy preview->widget */
+ g_free (preview->buffer);
+ g_free (preview->full_image_buffer);
+ g_free (preview);
+}
+
+/*
+ Start rendering of the preview in background using an idle event.
+ If already started and not yet finished, stop it first.
+ */
+static void
+preview_render_start (Preview *preview)
+{
+ preview_render_end (preview);
+
+ preview->init_done = FALSE;
+ preview->current_y = 0;
+ preview->drawn_y = 0;
+ preview->timeout_tag = g_timeout_add (100,
+ (GSourceFunc) preview_render_start_2,
+ preview);
+}
+
+static gint
+preview_render_start_2 (Preview *preview)
+{
+ preview->timeout_tag = 0;
+ preview->idle_tag = g_idle_add ((GSourceFunc) preview_handle_idle, preview);
+ return FALSE;
+}
+
+static void
+preview_render_end (Preview *preview)
+{
+ if (preview->timeout_tag > 0)
+ {
+ g_source_remove (preview->timeout_tag);
+ preview->timeout_tag = 0;
+ }
+ if (preview->idle_tag > 0)
+ {
+ if (preview->deinit_func)
+ (*preview->deinit_func) (preview, preview->deinit_data);
+
+ g_source_remove (preview->idle_tag);
+ preview->idle_tag = 0;
+ }
+}
+
+/*
+ Handle an idle event.
+ Return FALSE if done, TRUE otherwise.
+ */
+static gboolean
+preview_handle_idle (Preview *preview)
+{
+ gboolean done = FALSE;
+
+ if (preview->init_done == FALSE)
+ {
+ if (preview->init_func &&
+ (*preview->init_func) (preview, preview->init_data))
+ return TRUE;
+
+ preview->init_done = TRUE;
+ }
+
+ if (preview->render_func)
+ (*preview->render_func) (preview, preview->buffer, preview->current_y,
+ preview->render_data);
+ else
+ memset (preview->buffer, 0, preview->width * 3);
+
+ memcpy (preview->full_image_buffer + preview->width * 3 * preview->current_y,
+ preview->buffer,
+ preview->width * 3);
+
+ if (++preview->current_y >= preview->height)
+ done = TRUE;
+
+ if (done)
+ {
+ gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview->widget),
+ 0, 0, preview->width, preview->height,
+ GIMP_RGB_IMAGE,
+ preview->full_image_buffer,
+ preview->width * 3);
+
+ preview->drawn_y = preview->current_y;
+ preview_render_end (preview);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/*
+ Convert RGBA to RGB with rendering gray check if needed.
+ (from nova.c)
+ input: guchar src[4] RGBA pixel
+ output: guchar dest[3] RGB pixel
+ */
+
+static void
+preview_rgba_to_rgb (guchar *dest,
+ gint x,
+ gint y,
+ guchar *src)
+{
+ gint src_a;
+ gint check;
+ gint b;
+
+ src_a = src[3];
+
+ if (src_a == OPAQUE) /* full opaque */
+ {
+ for (b = 0; b < 3; b++)
+ dest[b] = src[b];
+ }
+ else
+ {
+ if ((x % (GIMP_CHECK_SIZE) < GIMP_CHECK_SIZE_SM) ^
+ (y % (GIMP_CHECK_SIZE) < GIMP_CHECK_SIZE_SM))
+ check = GIMP_CHECK_LIGHT * 255;
+ else
+ check = GIMP_CHECK_DARK * 255;
+
+ if (src_a == 0) /* full transparent */
+ {
+ for (b = 0; b < 3; b++)
+ dest[b] = check;
+ }
+ else
+ {
+ for (b = 0; b < 3; b++)
+ dest[b] = (src[b] * src_a + check * (OPAQUE-src_a)) / OPAQUE;
+ }
+ }
+}
+
+/*************************************************************************/
+/** **/
+/** +++ Gradient Menu **/
+/** +++ gm **/
+/** **/
+/*************************************************************************/
+
+static void
+gradient_menu_init (void)
+{
+ gm_gradient_get_list ();
+ gradient_menus = NULL;
+}
+
+static void
+gradient_menu_rescan (void)
+{
+ GList *tmp;
+ GradientMenu *gm;
+ GtkTreeModel *model;
+
+ /* Detach and destroy menus first */
+ tmp = gradient_menus;
+ while (tmp)
+ {
+ gm = tmp->data;
+ tmp = tmp->next;
+
+ model = gtk_combo_box_get_model (GTK_COMBO_BOX (gm->combo));
+ gtk_list_store_clear (GTK_LIST_STORE (model));
+ }
+
+ gm_gradient_get_list ();
+
+ tmp = gradient_menus;
+ while (tmp)
+ {
+ gm = tmp->data;
+ tmp = tmp->next;
+
+ gm_gradient_combo_fill (gm, gm->gradient_name);
+ }
+}
+
+static GradientMenu *
+gradient_menu_new (GradientMenuCallback callback,
+ gpointer callback_data,
+ const gchar *default_gradient_name)
+{
+ GradientMenu *gm = g_new (GradientMenu, 1);
+
+ gm->callback = callback;
+ gm->callback_data = callback_data;
+
+ gm->preview = gimp_preview_area_new ();
+ gtk_widget_set_size_request (gm->preview,
+ GM_PREVIEW_WIDTH, GM_PREVIEW_HEIGHT);
+
+ gm->combo = g_object_new (GIMP_TYPE_INT_COMBO_BOX, NULL);
+
+ g_signal_connect (gm->combo, "changed",
+ G_CALLBACK (gm_gradient_combo_callback),
+ gm);
+
+ gm_gradient_combo_fill (gm, default_gradient_name);
+
+ gtk_widget_show (gm->preview);
+ gtk_widget_show (gm->combo);
+
+ g_signal_connect (gm->combo, "destroy",
+ G_CALLBACK (gm_combo_destroy_callback),
+ gm);
+
+ gradient_menus = g_list_append (gradient_menus, gm);
+
+ return gm;
+}
+
+/* Local Functions */
+
+static void
+gm_gradient_get_list (void)
+{
+ int i;
+
+ if (gradient_names)
+ {
+ for (i = 0; i < num_gradient_names; i++)
+ g_free (gradient_names[i]);
+ g_free (gradient_names);
+ }
+
+ gradient_cache_flush (); /* to make sure */
+ gradient_names = gradient_get_list (&num_gradient_names);
+}
+
+static void
+gm_gradient_combo_fill (GradientMenu *gm,
+ const gchar *default_gradient)
+{
+ gint active = 0;
+ gint i;
+
+ for (i = 0; i < num_gradient_names; i++)
+ {
+ const gchar *name = gradient_names[i];
+
+ if (strcmp (name, default_gradient) == 0)
+ active = i;
+
+ gimp_int_combo_box_append (GIMP_INT_COMBO_BOX (gm->combo),
+ GIMP_INT_STORE_VALUE, i,
+ GIMP_INT_STORE_LABEL, name,
+ -1);
+ }
+
+ gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (gm->combo), active);
+}
+
+static void
+gm_gradient_combo_callback (GtkWidget *widget,
+ gpointer data)
+{
+ GradientMenu *gm = data;
+ const gchar *gradient_name;
+ gint index;
+
+ if (! gimp_int_combo_box_get_active (GIMP_INT_COMBO_BOX (widget), &index) ||
+ index < 0 ||
+ index >= num_gradient_names)
+ return;
+
+ gradient_name = gradient_names[index];
+
+ DEBUG_PRINT(("gm_combo_callback\n"));
+
+ gradient_name_copy (gm->gradient_name, gradient_name);
+
+ gm_preview_draw (gm->preview, gradient_name);
+
+ if (gm->callback)
+ (* gm->callback) (gradient_name, gm->callback_data);
+}
+
+static void
+gm_preview_draw (GtkWidget *preview,
+ const gchar *gradient_name)
+{
+ guchar values[GM_PREVIEW_WIDTH][4];
+ gint nvalues = GM_PREVIEW_WIDTH;
+ gint row, irow, col;
+ guchar dest_row[GM_PREVIEW_WIDTH][3];
+ guchar *dest;
+ guchar *src;
+ gint check, b;
+ guchar *dest_total_preview_buffer;
+ const gint alpha = 3;
+
+ gradient_get_values (gradient_name, (guchar *)values, nvalues);
+
+ dest_total_preview_buffer = g_new (guchar,
+ GM_PREVIEW_HEIGHT * GM_PREVIEW_WIDTH * 3);
+
+ for (row = 0; row < GM_PREVIEW_HEIGHT; row += GIMP_CHECK_SIZE_SM)
+ {
+ for (col = 0; col < GM_PREVIEW_WIDTH; col++)
+ {
+ dest = dest_row[col];
+ src = values[col];
+
+ if (src[alpha] == OPAQUE)
+ {
+ /* no alpha channel or opaque -- simple way */
+ for (b = 0; b < alpha; b++)
+ dest[b] = src[b];
+ }
+ else
+ {
+ /* more or less transparent */
+ if((col % (GIMP_CHECK_SIZE) < GIMP_CHECK_SIZE_SM) ^
+ (row % (GIMP_CHECK_SIZE) < GIMP_CHECK_SIZE_SM))
+ {
+ check = GIMP_CHECK_LIGHT * 255;
+ }
+ else
+ {
+ check = GIMP_CHECK_DARK * 255;
+ }
+
+ if (src[alpha] == 0)
+ {
+ /* full transparent -- check */
+ for (b = 0; b < alpha; b++)
+ dest[b] = check;
+ }
+ else
+ {
+ /* middlemost transparent -- mix check and src */
+ for (b = 0; b < alpha; b++)
+ dest[b] = (src[b] * src[alpha] +
+ check * (OPAQUE - src[alpha])) / OPAQUE;
+ }
+ }
+ }
+
+ for (irow = 0;
+ irow < GIMP_CHECK_SIZE_SM && row + irow < GM_PREVIEW_HEIGHT;
+ irow++)
+ {
+ memcpy (dest_total_preview_buffer + (row+irow) * 3 * GM_PREVIEW_WIDTH,
+ dest_row,
+ GM_PREVIEW_WIDTH * 3);
+ }
+ }
+
+ gimp_preview_area_draw (GIMP_PREVIEW_AREA (preview),
+ 0, 0, GM_PREVIEW_WIDTH, GM_PREVIEW_HEIGHT,
+ GIMP_RGB_IMAGE,
+ (const guchar *) dest_total_preview_buffer,
+ GM_PREVIEW_WIDTH * 3);
+
+ g_free (dest_total_preview_buffer);
+}
+
+static void
+gm_combo_destroy_callback (GtkWidget *w,
+ gpointer data)
+{
+ GradientMenu *gm = data;
+ gradient_menus = g_list_remove (gradient_menus, gm);
+}
+
+/*************************************************************************/
+/** **/
+/** +++ Gradients **/
+/** **/
+/*************************************************************************/
+
+/*
+ Manage both internal and external gradients: list up, cache,
+ sampling, etc.
+
+ External gradients are cached.
+ */
+
+
+static void
+gradient_name_copy (gchar *dest,
+ const gchar *src)
+{
+ strncpy (dest, src, GRADIENT_NAME_MAX - 1);
+ dest[GRADIENT_NAME_MAX - 1] = '\0';
+}
+
+/*
+ Translate SPACE to "\\040", etc.
+ */
+static void
+gradient_name_encode (gchar *dest,
+ const gchar *src)
+{
+ gint cnt = GRADIENT_NAME_MAX - 1;
+
+ while (*src && cnt--)
+ {
+ if (g_ascii_iscntrl (*src) || g_ascii_isspace (*src) || *src == '\\')
+ {
+ sprintf (dest, "\\%03o", *src++);
+ dest += 4;
+ }
+ else
+ *dest++ = *src++;
+ }
+ *dest = '\0';
+}
+
+/*
+ Translate "\\040" to SPACE, etc.
+ */
+static void
+gradient_name_decode (gchar *dest,
+ const gchar *src)
+{
+ gint cnt = GRADIENT_NAME_MAX - 1;
+ guint tmp;
+
+ while (*src && cnt--)
+ {
+ if (*src == '\\' && *(src+1) && *(src+2) && *(src+3))
+ {
+ sscanf (src+1, "%3o", &tmp);
+ *dest++ = tmp;
+ src += 4;
+ }
+ else
+ *dest++ = *src++;
+ }
+ *dest = '\0';
+}
+
+static void
+gradient_init (void)
+{
+ gradient_cache_head = NULL;
+ gradient_cache_count = 0;
+}
+
+static void
+gradient_free (void)
+{
+ gradient_cache_flush ();
+}
+
+static gchar **
+gradient_get_list (gint *num_gradients)
+{
+ gchar **gradients;
+ gchar **external_gradients = NULL;
+ gint external_ngradients = 0;
+ gint i, n;
+
+ gradient_cache_flush ();
+ external_gradients = gimp_gradients_get_list (NULL, &external_ngradients);
+
+ *num_gradients = G_N_ELEMENTS (internal_gradients) + external_ngradients;
+ gradients = g_new (gchar *, *num_gradients);
+
+ n = 0;
+ for (i = 0; i < G_N_ELEMENTS (internal_gradients); i++)
+ {
+ gradients[n++] = g_strdup (internal_gradients[i]);
+ }
+ for (i = 0; i < external_ngradients; i++)
+ {
+ gradients[n++] = g_strdup (external_gradients[i]);
+ }
+
+ g_strfreev (external_gradients);
+
+ return gradients;
+}
+
+static void
+gradient_get_values (const gchar *gradient_name,
+ guchar *values,
+ gint nvalues)
+{
+ /*
+ Criteria to distinguish internal and external is rather simple here.
+ It should be fixed later.
+ */
+ if (gradient_name[0] == '%')
+ gradient_get_values_internal (gradient_name, values, nvalues);
+ else
+ gradient_get_values_external (gradient_name, values, nvalues);
+}
+
+static void
+gradient_get_values_internal (const gchar *gradient_name,
+ guchar *values,
+ gint nvalues)
+{
+ const guchar white[4] = { 255, 255, 255, 255 };
+ const guchar white_trans[4] = { 255, 255, 255, 0 };
+ const guchar red_trans[4] = { 255, 0, 0, 0 };
+ const guchar blue_trans[4] = { 0, 0, 255, 0 };
+ const guchar yellow_trans[4] = { 255, 255, 0, 0 };
+
+ /*
+ The internal gradients here are example --
+ What kind of internals would be useful ?
+ */
+ if(!strcmp(gradient_name, "%white"))
+ {
+ gradient_get_blend (white, white, values, nvalues);
+ }
+ else if(!strcmp(gradient_name, "%white_grad"))
+ {
+ gradient_get_blend (white, white_trans, values, nvalues);
+ }
+ else if (!strcmp (gradient_name, "%red_grad"))
+ {
+ gradient_get_blend (white, red_trans, values, nvalues);
+ }
+ else if (!strcmp (gradient_name, "%blue_grad"))
+ {
+ gradient_get_blend (white, blue_trans, values, nvalues);
+ }
+ else if (!strcmp (gradient_name, "%yellow_grad"))
+ {
+ gradient_get_blend (white, yellow_trans, values, nvalues);
+ }
+ else if (!strcmp (gradient_name, "%random"))
+ {
+ gradient_get_random (values, nvalues);
+ }
+ else
+ {
+ gradient_get_default (gradient_name, values, nvalues);
+ }
+}
+
+static void
+gradient_get_blend (const guchar *fg,
+ const guchar *bg,
+ guchar *values,
+ gint nvalues)
+{
+ gdouble x;
+ gint i;
+ gint j;
+ guchar *v = values;
+
+ for (i = 0; i < nvalues; i++)
+ {
+ x = (double) i / nvalues;
+ for (j = 0; j < 4; j++)
+ *v++ = fg[j] * (1 - x) + bg[j] * x;
+ }
+}
+
+static void
+gradient_get_random (guchar *values,
+ gint nvalues)
+{
+ gint i;
+ gint j;
+ gint inten;
+ guchar *v = values;
+
+ /*
+ This is really simple -- gaussian noise might be better
+ */
+ for (i = 0; i < nvalues; i++)
+ {
+ inten = g_random_int_range (0, 256);
+ for (j = 0; j < 3; j++)
+ *v++ = inten;
+ *v++ = 255;
+ }
+}
+
+static void
+gradient_get_default (const gchar *name,
+ guchar *values,
+ gint nvalues)
+{
+ gdouble e[3];
+ gdouble x;
+ gint i;
+ gint j;
+ guchar *v = values;
+
+ /*
+ Create gradient by name
+ */
+ name++;
+ for (j = 0; j < 3; j++)
+ e[j] = name[j] / 255.0;
+
+ for (i = 0; i < nvalues; i++)
+ {
+ x = (double) i / nvalues;
+ for (j = 0; j < 3; j++)
+ *v++ = 255 * pow (x, e[j]);
+ *v++ = 255;
+ }
+}
+
+/*
+ Caching gradients is really needed. It really takes 0.2 seconds each
+ time to resample an external gradient. (And this plug-in has
+ currently 6 gradient menus.)
+
+ However, this caching routine is not too good. It picks up just
+ GRADIENT_RESOLUTION samples every time, and rescales it later. And
+ cached values are stored in guchar array. No accuracy.
+ */
+static void
+gradient_get_values_external (const gchar *gradient_name,
+ guchar *values,
+ gint nvalues)
+{
+ GradientCacheItem *ci;
+ gboolean found;
+#ifdef DEBUG
+ clock_t clk = clock ();
+#endif
+
+ g_return_if_fail (nvalues >= 2);
+
+ ci = gradient_cache_lookup (gradient_name, &found);
+ if (!found)
+ {
+ /* FIXME: "reverse" hardcoded to FALSE. */
+ gradient_get_values_real_external (gradient_name, ci->values,
+ GRADIENT_RESOLUTION, FALSE);
+ }
+ if (nvalues == GRADIENT_RESOLUTION)
+ {
+ memcpy (values, ci->values, 4 * GRADIENT_RESOLUTION);
+ }
+ else
+ {
+ double pos, frac;
+ int ipos;
+ int i, j;
+
+ for (i = 0; i < nvalues; i++)
+ {
+ pos = ((double) i / (nvalues - 1)) * (GRADIENT_RESOLUTION - 1);
+ g_assert (0 <= pos && pos <= GRADIENT_RESOLUTION - 1);
+ ipos = (int) pos; frac = pos - ipos;
+ if (frac == 0.0)
+ {
+ memcpy (&values[4 * i], &ci->values[4 * ipos], 4);
+ }
+ else
+ for (j = 0; j < 4; j++)
+ values[4 * i + j] = ci->values[4 * ipos + j] * (1 - frac)
+ + ci->values[4 * (ipos + 1) + j] * frac;
+ }
+ }
+
+#ifdef DEBUG
+ get_values_external_clock += clock () - clk;
+ get_values_external_count ++;
+#endif
+
+}
+
+static void
+gradient_get_values_real_external (const gchar *gradient_name,
+ guchar *values,
+ gint nvalues,
+ gboolean reverse)
+{
+ gint n_tmp_values;
+ gdouble *tmp_values;
+ gint i;
+ gint j;
+
+ gimp_gradient_get_uniform_samples (gradient_name, nvalues, reverse,
+ &n_tmp_values, &tmp_values);
+
+ for (i = 0; i < nvalues; i++)
+ for (j = 0; j < 4; j++)
+ values[4 * i + j] = (guchar) (tmp_values[4 * i + j] * 255);
+
+ g_free (tmp_values);
+}
+
+void
+gradient_cache_flush (void)
+{
+ GradientCacheItem *ci;
+ GradientCacheItem *tmp;
+
+ ci = gradient_cache_head;
+ while (ci)
+ {
+ tmp = ci->next;
+ g_free (ci);
+ ci = tmp;
+ }
+ gradient_cache_head = NULL;
+ gradient_cache_count = 0;
+}
+
+static GradientCacheItem *
+gradient_cache_lookup (const gchar *name,
+ gboolean *found)
+{
+ GradientCacheItem *ci;
+
+ ci = gradient_cache_head;
+ while (ci)
+ {
+ if (!strcmp (ci->name, name))
+ break;
+ ci = ci->next;
+ }
+ if (ci)
+ {
+ *found = TRUE;
+ if (!ci->prev)
+ {
+ g_assert (ci == gradient_cache_head);
+ return ci;
+ }
+ ci->prev->next = ci->next;
+ if (ci->next)
+ ci->next->prev = ci->prev;
+ ci->next = gradient_cache_head;
+ gradient_cache_head->prev = ci;
+ gradient_cache_head = ci;
+ ci->prev = NULL;
+ return ci;
+ }
+ else
+ {
+ *found = FALSE;
+ while (gradient_cache_count >= GRADIENT_CACHE_SIZE)
+ gradient_cache_zorch();
+ ci = g_new (GradientCacheItem, 1);
+ strncpy (ci->name, name, GRADIENT_NAME_MAX - 1);
+ ci->name[GRADIENT_NAME_MAX - 1] = '\0';
+ ci->next = gradient_cache_head;
+ ci->prev = NULL;
+ if (gradient_cache_head)
+ gradient_cache_head->prev = ci;
+ gradient_cache_head = ci;
+ ++gradient_cache_count;
+ return ci;
+ }
+}
+
+static void
+gradient_cache_zorch (void)
+{
+ GradientCacheItem *ci = gradient_cache_head;
+
+ while (ci && ci->next)
+ {
+ ci = ci->next;
+ }
+ if (ci)
+ {
+ g_assert (ci->next == NULL);
+ if (ci->prev)
+ ci->prev->next = NULL;
+ else
+ gradient_cache_head = NULL;
+ g_free (ci);
+ --gradient_cache_count;
+ }
+}
+
+#ifdef DEBUG
+void
+gradient_report (void)
+{
+ double total = (double) get_values_external_clock / CLOCKS_PER_SEC;
+
+ g_printerr ("gradient_get_values_external "
+ "%.2f sec. / %d times (ave %.2f sec.)\n",
+ total,
+ get_values_external_count,
+ total / get_values_external_count);
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-14 21:00:04 +0000