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Diffstat (limited to '')
| -rw-r--r-- | plug-ins/common/animation-play.c | 1759 |
1 files changed, 1759 insertions, 0 deletions
diff --git a/plug-ins/common/animation-play.c b/plug-ins/common/animation-play.c new file mode 100644 index 0000000..2bfa218 --- /dev/null +++ b/plug-ins/common/animation-play.c @@ -0,0 +1,1759 @@ +/* + * Animation Playback plug-in version 0.99.1 + * + * (c) Adam D. Moss : 1997-2000 : adam@gimp.org : adam@foxbox.org + * (c) Mircea Purdea : 2009 : someone_else@exhalus.net + * (c) Jehan : 2012 : jehan at girinstud.io + * + * GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * 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/>. + */ + +/* + * TODO: + * pdb interface - should we bother? + * + * speedups (caching? most bottlenecks seem to be in pixelrgns) + * -> do pixelrgns properly! + */ + +#include "config.h" + +#include <string.h> + +#include <libgimp/gimp.h> +#undef GDK_DISABLE_DEPRECATED +#include <libgimp/gimpui.h> + +#include "libgimp/stdplugins-intl.h" + + +#define PLUG_IN_PROC "plug-in-animationplay" +#define PLUG_IN_BINARY "animation-play" +#define PLUG_IN_ROLE "gimp-animation-play" +#define DITHERTYPE GDK_RGB_DITHER_NORMAL + + +typedef enum +{ + DISPOSE_COMBINE = 0x00, + DISPOSE_REPLACE = 0x01 +} DisposeType; + +typedef struct +{ + gint duration_index; + DisposeType default_frame_disposal; + guint32 default_frame_duration; +} +AnimationSettings; + +/* for shaping */ +typedef struct +{ + gint x, y; +} CursorOffset; + +/* Declare local functions. */ +static void query (void); +static void run (const gchar *name, + gint nparams, + const GimpParam *param, + gint *nreturn_vals, + GimpParam **return_vals); + +static void initialize (void); +static void build_dialog (gchar *imagename); +static void refresh_dialog (gchar *imagename); + +static void da_size_callback (GtkWidget *widget, + GtkAllocation *allocation, void *data); +static void sda_size_callback (GtkWidget *widget, + GtkAllocation *allocation, void *data); + +static void window_destroy (GtkWidget *widget); +static void play_callback (GtkToggleAction *action); +static void step_back_callback (GtkAction *action); +static void step_callback (GtkAction *action); +static void refresh_callback (GtkAction *action); +static void rewind_callback (GtkAction *action); +static void speed_up_callback (GtkAction *action); +static void speed_down_callback (GtkAction *action); +static void speed_reset_callback (GtkAction *action); +static void framecombo_changed (GtkWidget *combo, + gpointer data); +static void speedcombo_changed (GtkWidget *combo, + gpointer data); +static void fpscombo_changed (GtkWidget *combo, + gpointer data); +static void zoomcombo_activated (GtkEntry *combo, + gpointer data); +static void zoomcombo_changed (GtkWidget *combo, + gpointer data); +static gboolean repaint_sda (GtkWidget *darea, + GdkEventExpose *event, + gpointer data); +static gboolean repaint_da (GtkWidget *darea, + GdkEventExpose *event, + gpointer data); + +static void init_frames (void); +static void render_frame (gint32 whichframe); +static void show_frame (void); +static void total_alpha_preview (void); +static void update_alpha_preview (void); +static void update_combobox (void); +static gdouble get_duration_factor (gint index); +static gint get_fps (gint index); +static gdouble get_scale (gint index); +static void update_scale (gdouble scale); + + +/* tag util functions*/ +static gint parse_ms_tag (const gchar *str); +static DisposeType parse_disposal_tag (const gchar *str); +static gboolean is_disposal_tag (const gchar *str, + DisposeType *disposal, + gint *taglength); +static gboolean is_ms_tag (const gchar *str, + gint *duration, + gint *taglength); + + +const GimpPlugInInfo PLUG_IN_INFO = +{ + NULL, /* init_proc */ + NULL, /* quit_proc */ + query, /* query_proc */ + run, /* run_proc */ +}; + + +/* Global widgets'n'stuff */ +static GtkWidget *window = NULL; +static GdkWindow *root_win = NULL; +static GtkUIManager *ui_manager = NULL; +static GtkWidget *progress; +static GtkWidget *speedcombo = NULL; +static GtkWidget *fpscombo = NULL; +static GtkWidget *zoomcombo = NULL; +static GtkWidget *frame_disposal_combo = NULL; + +static gint32 image_id; +static guint width = -1, + height = -1; +static gint32 *layers = NULL; +static gint32 total_layers = 0; + +static GtkWidget *drawing_area = NULL; +static guchar *drawing_area_data = NULL; +static guint drawing_area_width = -1, + drawing_area_height = -1; +static guchar *preview_alpha1_data = NULL; +static guchar *preview_alpha2_data = NULL; + +static GtkWidget *shape_window = NULL; +static GtkWidget *shape_drawing_area = NULL; +static guchar *shape_drawing_area_data = NULL; +static guint shape_drawing_area_width = -1, + shape_drawing_area_height = -1; +static gchar *shape_preview_mask = NULL; + + +static gint32 total_frames = 0; +static gint32 *frames = NULL; +static guchar *rawframe = NULL; +static guint32 *frame_durations = NULL; +static guint frame_number = 0; + +static gboolean playing = FALSE; +static guint timer = 0; +static gboolean detached = FALSE; +static gdouble scale, shape_scale; + +/* Default settings. */ +static AnimationSettings settings = +{ + 3, + DISPOSE_COMBINE, + 100 /* ms */ +}; + +static gint32 frames_image_id = 0; + +MAIN () + +static void +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" }, + { GIMP_PDB_DRAWABLE, "drawable", "Input drawable (unused)" } + }; + + gimp_install_procedure (PLUG_IN_PROC, + N_("Preview a GIMP layer-based animation"), + "", + "Adam D. Moss <adam@gimp.org>", + "Adam D. Moss <adam@gimp.org>", + "1997, 1998...", + N_("_Playback..."), + "RGB*, INDEXED*, GRAY*", + GIMP_PLUGIN, + G_N_ELEMENTS (args), 0, + args, NULL); + + gimp_plugin_menu_register (PLUG_IN_PROC, "<Image>/Filters/Animation"); + gimp_plugin_icon_register (PLUG_IN_PROC, GIMP_ICON_TYPE_ICON_NAME, + (const guint8 *) "media-playback-start"); +} + +static void +run (const gchar *name, + gint n_params, + const GimpParam *param, + gint *nreturn_vals, + GimpParam **return_vals) +{ + static GimpParam values[1]; + GimpRunMode run_mode; + GimpPDBStatusType status = GIMP_PDB_SUCCESS; + + INIT_I18N (); + gegl_init (NULL, NULL); + + *nreturn_vals = 1; + *return_vals = values; + + run_mode = param[0].data.d_int32; + + if (run_mode == GIMP_RUN_NONINTERACTIVE && n_params != 3) + { + status = GIMP_PDB_CALLING_ERROR; + } + + if (status == GIMP_PDB_SUCCESS) + { + gimp_get_data (PLUG_IN_PROC, &settings); + image_id = param[1].data.d_image; + + initialize (); + gtk_main (); + gimp_set_data (PLUG_IN_PROC, &settings, sizeof (settings)); + + if (run_mode != GIMP_RUN_NONINTERACTIVE) + gimp_displays_flush (); + } + + values[0].type = GIMP_PDB_STATUS; + values[0].data.d_status = status; + + gimp_image_delete (frames_image_id); + gegl_exit (); +} + +static void +reshape_from_bitmap (const gchar *bitmap) +{ + static gchar *prev_bitmap = NULL; + static guint prev_width = -1; + static guint prev_height = -1; + + if ((!prev_bitmap) || + prev_width != shape_drawing_area_width || prev_height != shape_drawing_area_height || + (memcmp (prev_bitmap, bitmap, (shape_drawing_area_width * shape_drawing_area_height) / 8 + shape_drawing_area_height))) + { + GdkBitmap *shape_mask; + + shape_mask = gdk_bitmap_create_from_data (gtk_widget_get_window (shape_window), + bitmap, + shape_drawing_area_width, shape_drawing_area_height); + gtk_widget_shape_combine_mask (shape_window, shape_mask, 0, 0); + g_object_unref (shape_mask); + + if (!prev_bitmap || prev_width != shape_drawing_area_width || prev_height != shape_drawing_area_height) + { + g_free(prev_bitmap); + prev_bitmap = g_malloc ((shape_drawing_area_width * shape_drawing_area_height) / 8 + shape_drawing_area_height); + prev_width = shape_drawing_area_width; + prev_height = shape_drawing_area_height; + } + + memcpy (prev_bitmap, bitmap, (shape_drawing_area_width * shape_drawing_area_height) / 8 + shape_drawing_area_height); + } +} + +static gboolean +popup_menu (GtkWidget *widget, + GdkEventButton *event) +{ + GtkWidget *menu = gtk_ui_manager_get_widget (ui_manager, "/anim-play-popup"); + + gtk_menu_set_screen (GTK_MENU (menu), gtk_widget_get_screen (widget)); + gtk_menu_popup (GTK_MENU (menu), + NULL, NULL, NULL, NULL, + event ? event->button : 0, + event ? event->time : gtk_get_current_event_time ()); + + return TRUE; +} + +static gboolean +button_press (GtkWidget *widget, + GdkEventButton *event) +{ + if (gdk_event_triggers_context_menu ((GdkEvent *) event)) + return popup_menu (widget, event); + + return FALSE; +} + +/* + * Update the actual drawing area metrics, which may be different as requested, + * because there is no full control of the WM. + * data is always NULL. */ +static void +da_size_callback (GtkWidget *widget, + GtkAllocation *allocation, void *data) +{ + if (allocation->width == drawing_area_width && allocation->height == drawing_area_height) + return; + + drawing_area_width = allocation->width; + drawing_area_height = allocation->height; + scale = MIN ((gdouble) drawing_area_width / (gdouble) width, (gdouble) drawing_area_height / (gdouble) height); + + g_free (drawing_area_data); + drawing_area_data = g_malloc (drawing_area_width * drawing_area_height * 3); + + update_alpha_preview (); + + if (! detached) + { + /* Update the zoom information. */ + GtkEntry *zoomcombo_text_child; + + zoomcombo_text_child = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (zoomcombo))); + if (zoomcombo_text_child) + { + char* new_entry_text = g_strdup_printf (_("%.1f %%"), scale * 100.0); + + gtk_entry_set_text (zoomcombo_text_child, new_entry_text); + g_free (new_entry_text); + } + + /* Update the rawframe. */ + g_free (rawframe); + rawframe = g_malloc ((unsigned long) drawing_area_width * drawing_area_height * 4); + + /* As we re-allocated the drawn data, let's render it again. */ + if (frame_number < total_frames) + render_frame (frame_number); + } + else + { + /* Set "alpha grid" background. */ + total_alpha_preview (); + repaint_da(drawing_area, NULL, NULL); + } +} + +/* + * Update the actual shape drawing area metrics, which may be different as requested, + * They *should* be the same as the drawing area, but the safe way is to make sure + * and process it separately. + * data is always NULL. */ +static void +sda_size_callback (GtkWidget *widget, + GtkAllocation *allocation, void *data) +{ + if (allocation->width == shape_drawing_area_width && allocation->height == shape_drawing_area_height) + return; + + shape_drawing_area_width = allocation->width; + shape_drawing_area_height = allocation->height; + shape_scale = MIN ((gdouble) shape_drawing_area_width / (gdouble) width, (gdouble) shape_drawing_area_height / (gdouble) height); + + g_free (shape_drawing_area_data); + g_free (shape_preview_mask); + + shape_drawing_area_data = g_malloc (shape_drawing_area_width * shape_drawing_area_height * 3); + shape_preview_mask = g_malloc ((shape_drawing_area_width * shape_drawing_area_height) / 8 + 1 + shape_drawing_area_height); + + if (detached) + { + /* Update the zoom information. */ + GtkEntry *zoomcombo_text_child; + + zoomcombo_text_child = GTK_ENTRY (gtk_bin_get_child (GTK_BIN (zoomcombo))); + if (zoomcombo_text_child) + { + char* new_entry_text = g_strdup_printf (_("%.1f %%"), shape_scale * 100.0); + + gtk_entry_set_text (zoomcombo_text_child, new_entry_text); + g_free (new_entry_text); + } + + /* Update the rawframe. */ + g_free (rawframe); + rawframe = g_malloc ((unsigned long) shape_drawing_area_width * shape_drawing_area_height * 4); + + if (frame_number < total_frames) + render_frame (frame_number); + } +} + +static gboolean +shape_pressed (GtkWidget *widget, + GdkEventButton *event) +{ + if (button_press (widget, event)) + return TRUE; + + /* ignore double and triple click */ + if (event->type == GDK_BUTTON_PRESS) + { + CursorOffset *p = g_object_get_data (G_OBJECT(widget), "cursor-offset"); + + if (!p) + return FALSE; + + p->x = (gint) event->x; + p->y = (gint) event->y; + + gtk_grab_add (widget); + gdk_pointer_grab (gtk_widget_get_window (widget), TRUE, + GDK_BUTTON_RELEASE_MASK | + GDK_BUTTON_MOTION_MASK | + GDK_POINTER_MOTION_HINT_MASK, + NULL, NULL, 0); + gdk_window_raise (gtk_widget_get_window (widget)); + } + + return FALSE; +} + +static gboolean +shape_released (GtkWidget *widget) +{ + gtk_grab_remove (widget); + gdk_display_pointer_ungrab (gtk_widget_get_display (widget), 0); + gdk_flush (); + + return FALSE; +} + +static gboolean +shape_motion (GtkWidget *widget, + GdkEventMotion *event) +{ + GdkModifierType mask; + gint xp, yp; + + gdk_window_get_pointer (root_win, &xp, &yp, &mask); + + /* if a button is still held by the time we process this event... */ + if (mask & GDK_BUTTON1_MASK) + { + CursorOffset *p = g_object_get_data (G_OBJECT (widget), "cursor-offset"); + + if (!p) + return FALSE; + + gtk_window_move (GTK_WINDOW (widget), xp - p->x, yp - p->y); + } + else /* the user has released all buttons */ + { + shape_released (widget); + } + + return FALSE; +} + +static gboolean +repaint_da (GtkWidget *darea, + GdkEventExpose *event, + gpointer data) +{ + GtkStyle *style = gtk_widget_get_style (darea); + + gdk_draw_rgb_image (gtk_widget_get_window (darea), + style->white_gc, + (gint) ((drawing_area_width - scale * width) / 2), + (gint) ((drawing_area_height - scale * height) / 2), + drawing_area_width, drawing_area_height, + (total_frames == 1) ? GDK_RGB_DITHER_MAX : DITHERTYPE, + drawing_area_data, drawing_area_width * 3); + + return TRUE; +} + +static gboolean +repaint_sda (GtkWidget *darea, + GdkEventExpose *event, + gpointer data) +{ + GtkStyle *style = gtk_widget_get_style (darea); + + gdk_draw_rgb_image (gtk_widget_get_window (darea), + style->white_gc, + (gint) ((shape_drawing_area_width - shape_scale * width) / 2), + (gint) ((shape_drawing_area_height - shape_scale * height) / 2), + shape_drawing_area_width, shape_drawing_area_height, + (total_frames == 1) ? GDK_RGB_DITHER_MAX : DITHERTYPE, + shape_drawing_area_data, shape_drawing_area_width * 3); + + return TRUE; +} + +static void +close_callback (GtkAction *action, + gpointer data) +{ + gtk_widget_destroy (GTK_WIDGET (data)); +} + +static void +help_callback (GtkAction *action, + gpointer data) +{ + gimp_standard_help_func (PLUG_IN_PROC, data); +} + + +static void +detach_callback (GtkToggleAction *action) +{ + gboolean active = gtk_toggle_action_get_active (action); + + if (active == detached) + { + g_warning ("detached state and toggle action got out of sync"); + return; + } + + detached = active; + + if (detached) + { + gint x, y; + + /* Create a total-alpha buffer merely for the not-shaped + drawing area to now display. */ + + gtk_window_set_screen (GTK_WINDOW (shape_window), + gtk_widget_get_screen (drawing_area)); + + gtk_widget_show (shape_window); + + if (!gtk_widget_get_realized (drawing_area)) + gtk_widget_realize (drawing_area); + if (!gtk_widget_get_realized (shape_drawing_area)) + gtk_widget_realize (shape_drawing_area); + + gdk_window_get_origin (gtk_widget_get_window (drawing_area), &x, &y); + + gtk_window_move (GTK_WINDOW (shape_window), x + 6, y + 6); + + gdk_window_set_back_pixmap (gtk_widget_get_window (shape_drawing_area), NULL, TRUE); + + + /* Set "alpha grid" background. */ + total_alpha_preview (); + repaint_da(drawing_area, NULL, NULL); + } + else + gtk_widget_hide (shape_window); + + render_frame (frame_number); +} + +static GtkUIManager * +ui_manager_new (GtkWidget *window) +{ + static GtkActionEntry actions[] = + { + { "step-back", "media-skip-backward", + N_("Step _back"), "d", N_("Step back to previous frame"), + G_CALLBACK (step_back_callback) }, + + { "step", "media-skip-forward", + N_("_Step"), "f", N_("Step to next frame"), + G_CALLBACK (step_callback) }, + + { "rewind", "media-seek-backward", + NULL, NULL, N_("Rewind the animation"), + G_CALLBACK (rewind_callback) }, + + { "refresh", GIMP_ICON_VIEW_REFRESH, + NULL, "<control>R", N_("Reload the image"), + G_CALLBACK (refresh_callback) }, + + { "help", "help-browser", + NULL, NULL, NULL, + G_CALLBACK (help_callback) }, + + { "close", "window-close", + NULL, "<control>W", NULL, + G_CALLBACK (close_callback) + }, + { + "quit", "application-quit", + NULL, "<control>Q", NULL, + G_CALLBACK (close_callback) + }, + { + "speed-up", NULL, + N_("Faster"), "<control>L", N_("Increase the speed of the animation"), + G_CALLBACK (speed_up_callback) + }, + { + "speed-down", NULL, + N_("Slower"), "<control>J", N_("Decrease the speed of the animation"), + G_CALLBACK (speed_down_callback) + }, + { + "speed-reset", NULL, + N_("Reset speed"), "<control>K", N_("Reset the speed of the animation"), + G_CALLBACK (speed_reset_callback) + } + }; + + static GtkToggleActionEntry toggle_actions[] = + { + { "play", "media-playback-start", + NULL, "space", N_("Start playback"), + G_CALLBACK (play_callback), FALSE }, + + { "detach", GIMP_ICON_DETACH, + N_("Detach"), NULL, + N_("Detach the animation from the dialog window"), + G_CALLBACK (detach_callback), FALSE } + }; + + GtkUIManager *ui_manager = gtk_ui_manager_new (); + GtkActionGroup *group = gtk_action_group_new ("Actions"); + GError *error = NULL; + + gtk_action_group_set_translation_domain (group, NULL); + + gtk_action_group_add_actions (group, + actions, + G_N_ELEMENTS (actions), + window); + gtk_action_group_add_toggle_actions (group, + toggle_actions, + G_N_ELEMENTS (toggle_actions), + NULL); + + gtk_window_add_accel_group (GTK_WINDOW (window), + gtk_ui_manager_get_accel_group (ui_manager)); + gtk_accel_group_lock (gtk_ui_manager_get_accel_group (ui_manager)); + + gtk_ui_manager_insert_action_group (ui_manager, group, -1); + g_object_unref (group); + + gtk_ui_manager_add_ui_from_string (ui_manager, + "<ui>" + " <toolbar name=\"anim-play-toolbar\">" + " <toolitem action=\"play\" />" + " <toolitem action=\"step-back\" />" + " <toolitem action=\"step\" />" + " <toolitem action=\"rewind\" />" + " <separator />" + " <toolitem action=\"detach\" />" + " <toolitem action=\"refresh\" />" + " <separator name=\"space\" />" + " <toolitem action=\"help\" />" + " </toolbar>" + " <accelerator action=\"close\" />" + " <accelerator action=\"quit\" />" + "</ui>", + -1, &error); + + if (error) + { + g_warning ("error parsing ui: %s", error->message); + g_clear_error (&error); + } + + gtk_ui_manager_add_ui_from_string (ui_manager, + "<ui>" + " <popup name=\"anim-play-popup\">" + " <menuitem action=\"play\" />" + " <menuitem action=\"step-back\" />" + " <menuitem action=\"step\" />" + " <menuitem action=\"rewind\" />" + " <separator />" + " <menuitem action=\"speed-down\" />" + " <menuitem action=\"speed-up\" />" + " <menuitem action=\"speed-reset\" />" + " <separator />" + " <menuitem action=\"detach\" />" + " <menuitem action=\"refresh\" />" + " <menuitem action=\"close\" />" + " </popup>" + "</ui>", + -1, &error); + + if (error) + { + g_warning ("error parsing ui: %s", error->message); + g_clear_error (&error); + } + + return ui_manager; +} + +static void +refresh_dialog (gchar *imagename) +{ + gchar *name; + GdkScreen *screen; + guint screen_width, screen_height; + gint window_width, window_height; + + /* Image Name */ + name = g_strconcat (_("Animation Playback:"), " ", imagename, NULL); + gtk_window_set_title (GTK_WINDOW (window), name); + g_free (name); + + /* Update GUI size. */ + screen = gtk_widget_get_screen (window); + screen_height = gdk_screen_get_height (screen); + screen_width = gdk_screen_get_width (screen); + gtk_window_get_size (GTK_WINDOW (window), &window_width, &window_height); + + /* if the *window* size is bigger than the screen size, + * diminish the drawing area by as much, then compute the corresponding scale. */ + if (window_width + 50 > screen_width || window_height + 50 > screen_height) + { + guint expected_drawing_area_width = MAX (1, width - window_width + screen_width); + guint expected_drawing_area_height = MAX (1, height - window_height + screen_height); + gdouble expected_scale = MIN ((gdouble) expected_drawing_area_width / (gdouble) width, + (gdouble) expected_drawing_area_height / (gdouble) height); + update_scale (expected_scale); + + /* There is unfortunately no good way to know the size of the decorations, taskbars, etc. + * So we take a wild guess by making the window slightly smaller to fit into any case. */ + gtk_window_set_default_size (GTK_WINDOW (window), + MIN (expected_drawing_area_width + 20, screen_width - 60), + MIN (expected_drawing_area_height + 90, screen_height - 60)); + + gtk_window_reshow_with_initial_size (GTK_WINDOW (window)); + } +} + +static void +build_dialog (gchar *imagename) +{ + GtkWidget *toolbar; + GtkWidget *frame; + GtkWidget *viewport; + GtkWidget *main_vbox; + GtkWidget *vbox; + GtkWidget *hbox; + GtkWidget *abox; + GtkToolItem *item; + GtkAction *action; + GdkCursor *cursor; + gint index; + gchar *text; + + gimp_ui_init (PLUG_IN_BINARY, TRUE); + + + window = gtk_window_new (GTK_WINDOW_TOPLEVEL); + gtk_window_set_role (GTK_WINDOW (window), "animation-playback"); + + g_signal_connect (window, "destroy", + G_CALLBACK (window_destroy), + NULL); + g_signal_connect (window, "popup-menu", + G_CALLBACK (popup_menu), + NULL); + + gimp_help_connect (window, gimp_standard_help_func, PLUG_IN_PROC, NULL); + + ui_manager = ui_manager_new (window); + + main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0); + gtk_container_add (GTK_CONTAINER (window), main_vbox); + gtk_widget_show (main_vbox); + + toolbar = gtk_ui_manager_get_widget (ui_manager, "/anim-play-toolbar"); + gtk_box_pack_start (GTK_BOX (main_vbox), toolbar, FALSE, FALSE, 0); + gtk_widget_show (toolbar); + + item = + GTK_TOOL_ITEM (gtk_ui_manager_get_widget (ui_manager, + "/anim-play-toolbar/space")); + gtk_separator_tool_item_set_draw (GTK_SEPARATOR_TOOL_ITEM (item), FALSE); + gtk_tool_item_set_expand (item, TRUE); + + vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 2); + gtk_box_pack_start (GTK_BOX (main_vbox), vbox, TRUE, TRUE, 0); + gtk_widget_show (vbox); + + /* Alignment for the scrolling window, which can be resized by the user. */ + abox = gtk_alignment_new (0.5, 0.5, 1.0, 1.0); + gtk_box_pack_start (GTK_BOX (vbox), abox, TRUE, TRUE, 0); + gtk_widget_show (abox); + + frame = gtk_scrolled_window_new (NULL, NULL); + gtk_container_add (GTK_CONTAINER (abox), frame); + gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (frame), + GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC); + gtk_widget_show (frame); + + viewport = gtk_viewport_new (NULL, NULL); + gtk_container_add (GTK_CONTAINER (frame), viewport); + gtk_widget_show (viewport); + + /* I add the drawing area inside an alignment box to prevent it from being resized. */ + abox = gtk_alignment_new (0.5, 0.5, 0.0, 0.0); + gtk_container_add (GTK_CONTAINER (viewport), abox); + gtk_widget_show (abox); + + /* Build a drawing area, with a default size same as the image */ + drawing_area = gtk_drawing_area_new (); + gtk_widget_add_events (drawing_area, GDK_BUTTON_PRESS_MASK); + gtk_container_add (GTK_CONTAINER (abox), drawing_area); + gtk_widget_show (drawing_area); + + g_signal_connect (drawing_area, "size-allocate", + G_CALLBACK(da_size_callback), + NULL); + g_signal_connect (drawing_area, "button-press-event", + G_CALLBACK (button_press), + NULL); + + /* Lower option bar. */ + + hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2); + gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0); + gtk_widget_show (hbox); + + /* Progress bar. */ + + progress = gtk_progress_bar_new (); + gtk_box_pack_end (GTK_BOX (hbox), progress, TRUE, TRUE, 0); + gtk_widget_show (progress); + + /* Zoom */ + zoomcombo = gtk_combo_box_text_new_with_entry (); + gtk_box_pack_end (GTK_BOX (hbox), zoomcombo, FALSE, FALSE, 0); + gtk_widget_show (zoomcombo); + for (index = 0; index < 5; index++) + { + /* list is given in "fps" - frames per second */ + text = g_strdup_printf (_("%.1f %%"), get_scale (index) * 100.0); + gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (zoomcombo), text); + g_free (text); + } + + gtk_combo_box_set_active (GTK_COMBO_BOX (zoomcombo), 2); /* 1.0 by default. */ + + g_signal_connect (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (zoomcombo))), + "activate", + G_CALLBACK (zoomcombo_activated), + NULL); + g_signal_connect (zoomcombo, "changed", + G_CALLBACK (zoomcombo_changed), + NULL); + + gimp_help_set_help_data (zoomcombo, _("Zoom"), NULL); + + /* fps combo */ + fpscombo = gtk_combo_box_text_new (); + gtk_box_pack_end (GTK_BOX (hbox), fpscombo, FALSE, FALSE, 0); + gtk_widget_show (fpscombo); + + for (index = 0; index < 9; index++) + { + /* list is given in "fps" - frames per second */ + text = g_strdup_printf (_("%d fps"), get_fps (index)); + gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (fpscombo), text); + g_free (text); + if (settings.default_frame_duration == 1000 / get_fps(index)) + gtk_combo_box_set_active (GTK_COMBO_BOX (fpscombo), index); + } + + g_signal_connect (fpscombo, "changed", + G_CALLBACK (fpscombo_changed), + NULL); + + gimp_help_set_help_data (fpscombo, _("Default framerate"), NULL); + + /* Speed Combo */ + speedcombo = gtk_combo_box_text_new (); + gtk_box_pack_end (GTK_BOX (hbox), speedcombo, FALSE, FALSE, 0); + gtk_widget_show (speedcombo); + + for (index = 0; index < 7; index++) + { + text = g_strdup_printf ("%g\303\227", (100 / get_duration_factor (index)) / 100); + gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (speedcombo), text); + g_free (text); + } + + gtk_combo_box_set_active (GTK_COMBO_BOX (speedcombo), settings.duration_index); + + g_signal_connect (speedcombo, "changed", + G_CALLBACK (speedcombo_changed), + NULL); + + gimp_help_set_help_data (speedcombo, _("Playback speed"), NULL); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-reset"); + gtk_action_set_sensitive (action, FALSE); + + /* Set up the frame disposal combo. */ + frame_disposal_combo = gtk_combo_box_text_new (); + + /* 2 styles of default frame disposals: cumulative layers and one frame per layer. */ + text = g_strdup (_("Cumulative layers (combine)")); + gtk_combo_box_text_insert_text (GTK_COMBO_BOX_TEXT (frame_disposal_combo), DISPOSE_COMBINE, text); + g_free (text); + + text = g_strdup (_("One frame per layer (replace)")); + gtk_combo_box_text_insert_text (GTK_COMBO_BOX_TEXT (frame_disposal_combo), DISPOSE_REPLACE, text); + g_free (text); + + gtk_combo_box_set_active (GTK_COMBO_BOX (frame_disposal_combo), settings.default_frame_disposal); + + g_signal_connect (frame_disposal_combo, "changed", + G_CALLBACK (framecombo_changed), + NULL); + + gtk_box_pack_end (GTK_BOX (hbox), frame_disposal_combo, FALSE, FALSE, 0); + gtk_widget_show (frame_disposal_combo); + + gtk_window_set_resizable (GTK_WINDOW (window), TRUE); + gtk_window_set_default_size (GTK_WINDOW (window), width + 20, height + 90); + gtk_widget_show (window); + + /* shape_drawing_area for detached feature. */ + shape_window = gtk_window_new (GTK_WINDOW_POPUP); + gtk_window_set_resizable (GTK_WINDOW (shape_window), FALSE); + + shape_drawing_area = gtk_drawing_area_new (); + gtk_container_add (GTK_CONTAINER (shape_window), shape_drawing_area); + gtk_widget_show (shape_drawing_area); + gtk_widget_add_events (shape_drawing_area, GDK_BUTTON_PRESS_MASK); + gtk_widget_realize (shape_drawing_area); + + gdk_window_set_back_pixmap (gtk_widget_get_window (shape_window), NULL, FALSE); + + cursor = gdk_cursor_new_for_display (gtk_widget_get_display (shape_window), + GDK_HAND2); + gdk_window_set_cursor (gtk_widget_get_window (shape_window), cursor); + gdk_cursor_unref (cursor); + + g_signal_connect(shape_drawing_area, "size-allocate", + G_CALLBACK(sda_size_callback), + NULL); + g_signal_connect (shape_window, "button-press-event", + G_CALLBACK (shape_pressed), + NULL); + g_signal_connect (shape_window, "button-release-event", + G_CALLBACK (shape_released), + NULL); + g_signal_connect (shape_window, "motion-notify-event", + G_CALLBACK (shape_motion), + NULL); + + g_object_set_data (G_OBJECT (shape_window), + "cursor-offset", g_new0 (CursorOffset, 1)); + + g_signal_connect (drawing_area, "expose-event", + G_CALLBACK (repaint_da), + NULL); + + g_signal_connect (shape_drawing_area, "expose-event", + G_CALLBACK (repaint_sda), + NULL); + + /* We request a minimum size *after* having connecting the + * size-allocate signal for correct initialization. */ + gtk_widget_set_size_request (drawing_area, width, height); + gtk_widget_set_size_request (shape_drawing_area, width, height); + + root_win = gdk_get_default_root_window (); +} + +static void +init_frames (void) +{ + /* Frames are associated to an unused image. */ + gint i; + gint32 new_frame, previous_frame, new_layer; + gboolean animated; + GtkAction *action; + gint duration = 0; + DisposeType disposal = settings.default_frame_disposal; + gchar *layer_name; + + total_frames = total_layers; + + /* Cleanup before re-generation. */ + if (frames) + { + gimp_image_delete (frames_image_id); + g_free (frames); + g_free (frame_durations); + } + frames = g_try_malloc0_n (total_frames, sizeof (gint32)); + frame_durations = g_try_malloc0_n (total_frames, sizeof (guint32)); + if (! frames || ! frame_durations) + { + gimp_message (_("Memory could not be allocated to the frame container.")); + gtk_main_quit (); + gimp_quit (); + return; + } + /* We only use RGB images for display because indexed images would somehow + render terrible colors. Layers from other types will be automatically + converted. */ + frames_image_id = gimp_image_new (width, height, GIMP_RGB); + /* Save processing time and memory by not saving history and merged frames. */ + gimp_image_undo_disable (frames_image_id); + + for (i = 0; i < total_frames; i++) + { + layer_name = gimp_item_get_name (layers[total_layers - (i + 1)]); + if (layer_name) + { + duration = parse_ms_tag (layer_name); + disposal = parse_disposal_tag (layer_name); + g_free (layer_name); + } + + if (i > 0 && disposal != DISPOSE_REPLACE) + { + previous_frame = gimp_layer_copy (frames[i - 1]); + gimp_image_insert_layer (frames_image_id, previous_frame, 0, -1); + gimp_item_set_visible (previous_frame, TRUE); + } + new_layer = gimp_layer_new_from_drawable (layers[total_layers - (i + 1)], frames_image_id); + gimp_image_insert_layer (frames_image_id, new_layer, 0, -1); + gimp_item_set_visible (new_layer, TRUE); + new_frame = gimp_image_merge_visible_layers (frames_image_id, GIMP_CLIP_TO_IMAGE); + frames[i] = new_frame; + gimp_item_set_visible (new_frame, FALSE); + + if (duration <= 0) + duration = settings.default_frame_duration; + frame_durations[i] = (guint32) duration; + } + + /* Update the UI. */ + animated = total_frames >= 2; + action = gtk_ui_manager_get_action (ui_manager, + "/ui/anim-play-toolbar/play"); + gtk_action_set_sensitive (action, animated); + + action = gtk_ui_manager_get_action (ui_manager, + "/ui/anim-play-toolbar/step-back"); + gtk_action_set_sensitive (action, animated); + + action = gtk_ui_manager_get_action (ui_manager, + "/ui/anim-play-toolbar/step"); + gtk_action_set_sensitive (action, animated); + + action = gtk_ui_manager_get_action (ui_manager, + "/ui/anim-play-toolbar/rewind"); + gtk_action_set_sensitive (action, animated); + + /* Keep the same frame number, unless it is now invalid. */ + if (frame_number >= total_frames) + frame_number = 0; +} + +static void +initialize (void) +{ + /* Freeing existing data after a refresh. */ + g_free (layers); + + /* Catch the case when the user has closed the image in the meantime. */ + if (! gimp_image_is_valid (image_id)) + { + gimp_message (_("Invalid image. Did you close it?")); + gtk_main_quit (); + return; + } + + width = gimp_image_width (image_id); + height = gimp_image_height (image_id); + layers = gimp_image_get_layers (image_id, &total_layers); + + if (!window) + build_dialog (gimp_image_get_name (image_id)); + refresh_dialog (gimp_image_get_name (image_id)); + + init_frames (); + render_frame (frame_number); + show_frame (); +} + +/* Rendering Functions */ + +static void +render_frame (gint32 whichframe) +{ + GeglBuffer *buffer; + gint i, j, k; + guchar *srcptr; + guchar *destptr; + GtkWidget *da; + guint drawing_width, drawing_height; + gdouble drawing_scale; + guchar *preview_data; + + g_assert (whichframe < total_frames); + + if (detached) + { + da = shape_drawing_area; + preview_data = shape_drawing_area_data; + drawing_width = shape_drawing_area_width; + drawing_height = shape_drawing_area_height; + drawing_scale = shape_scale; + } + else + { + da = drawing_area; + preview_data = drawing_area_data; + drawing_width = drawing_area_width; + drawing_height = drawing_area_height; + drawing_scale = scale; + + /* Set "alpha grid" background. */ + total_alpha_preview (); + } + + buffer = gimp_drawable_get_buffer (frames[whichframe]); + + /* Fetch and scale the whole raw new frame */ + gegl_buffer_get (buffer, GEGL_RECTANGLE (0, 0, drawing_width, drawing_height), + drawing_scale, babl_format ("R'G'B'A u8"), + rawframe, GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_CLAMP); + + /* Number of pixels. */ + i = drawing_width * drawing_height; + destptr = preview_data; + srcptr = rawframe; + while (i--) + { + if (! (srcptr[3] & 128)) + { + srcptr += 4; + destptr += 3; + continue; + } + + *(destptr++) = *(srcptr++); + *(destptr++) = *(srcptr++); + *(destptr++) = *(srcptr++); + + srcptr++; + } + + /* calculate the shape mask */ + if (detached) + { + memset (shape_preview_mask, 0, (drawing_width * drawing_height) / 8 + drawing_height); + srcptr = rawframe + 3; + + for (j = 0; j < drawing_height; j++) + { + k = j * ((7 + drawing_width) / 8); + + for (i = 0; i < drawing_width; i++) + { + if ((*srcptr) & 128) + shape_preview_mask[k + i/8] |= (1 << (i&7)); + + srcptr += 4; + } + } + reshape_from_bitmap (shape_preview_mask); + } + + /* Display the preview buffer. */ + if (gtk_widget_get_realized (da)) + gdk_draw_rgb_image (gtk_widget_get_window (da), + (gtk_widget_get_style (da))->white_gc, + (gint) ((drawing_width - drawing_scale * width) / 2), + (gint) ((drawing_height - drawing_scale * height) / 2), + drawing_width, drawing_height, + (total_frames == 1 ? + GDK_RGB_DITHER_MAX : DITHERTYPE), + preview_data, drawing_width * 3); + + /* clean up */ + g_object_unref (buffer); +} + +static void +show_frame (void) +{ + gchar *text; + + /* update the dialog's progress bar */ + gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress), + ((gfloat) frame_number / + (gfloat) (total_frames - 0.999))); + + text = g_strdup_printf (_("Frame %d of %d"), frame_number + 1, total_frames); + gtk_progress_bar_set_text (GTK_PROGRESS_BAR (progress), text); + g_free (text); +} + +static void +update_alpha_preview (void) +{ + gint i; + + g_free (preview_alpha1_data); + g_free (preview_alpha2_data); + + preview_alpha1_data = g_malloc (drawing_area_width * 3); + preview_alpha2_data = g_malloc (drawing_area_width * 3); + + for (i = 0; i < drawing_area_width; i++) + { + if (i & 8) + { + preview_alpha1_data[i*3 + 0] = + preview_alpha1_data[i*3 + 1] = + preview_alpha1_data[i*3 + 2] = 102; + preview_alpha2_data[i*3 + 0] = + preview_alpha2_data[i*3 + 1] = + preview_alpha2_data[i*3 + 2] = 154; + } + else + { + preview_alpha1_data[i*3 + 0] = + preview_alpha1_data[i*3 + 1] = + preview_alpha1_data[i*3 + 2] = 154; + preview_alpha2_data[i*3 + 0] = + preview_alpha2_data[i*3 + 1] = + preview_alpha2_data[i*3 + 2] = 102; + } + } +} + +static void +total_alpha_preview (void) +{ + gint i; + + for (i = 0; i < drawing_area_height; i++) + { + if (i & 8) + memcpy (&drawing_area_data[i * 3 * drawing_area_width], preview_alpha1_data, 3 * drawing_area_width); + else + memcpy (&drawing_area_data[i * 3 * drawing_area_width], preview_alpha2_data, 3 * drawing_area_width); + } +} + +/* Util. */ + +static void +remove_timer (void) +{ + if (timer) + { + g_source_remove (timer); + timer = 0; + } +} + +static void +do_back_step (void) +{ + if (frame_number == 0) + frame_number = total_frames - 1; + else + frame_number = (frame_number - 1) % total_frames; + render_frame (frame_number); +} + +static void +do_step (void) +{ + frame_number = (frame_number + 1) % total_frames; + render_frame (frame_number); +} + + +/* Callbacks */ + +static void +window_destroy (GtkWidget *widget) +{ + if (playing) + remove_timer (); + + if (shape_window) + gtk_widget_destroy (GTK_WIDGET (shape_window)); + + gtk_main_quit (); +} + + +static gint +advance_frame_callback (gpointer data) +{ + gdouble duration; + + remove_timer(); + + duration = frame_durations[(frame_number + 1) % total_frames]; + + timer = g_timeout_add (duration * get_duration_factor (settings.duration_index), + advance_frame_callback, NULL); + + do_step (); + show_frame (); + + return FALSE; +} + + +static void +play_callback (GtkToggleAction *action) +{ + if (playing) + remove_timer (); + + playing = gtk_toggle_action_get_active (action); + + if (playing) + { + timer = g_timeout_add ((gdouble) frame_durations[frame_number] * + get_duration_factor (settings.duration_index), + advance_frame_callback, NULL); + + gtk_action_set_icon_name (GTK_ACTION (action), "media-playback-pause"); + } + else + { + gtk_action_set_icon_name (GTK_ACTION (action), "media-playback-start"); + } + + g_object_set (action, + "tooltip", playing ? _("Stop playback") : _("Start playback"), + NULL); +} + +static gdouble +get_duration_factor (gint index) +{ + switch (index) + { + case 0: + return 0.125; + case 1: + return 0.25; + case 2: + return 0.5; + case 3: + return 1.0; + case 4: + return 2.0; + case 5: + return 4.0; + case 6: + return 8.0; + default: + return 1.0; + } +} + +static gint +get_fps (gint index) +{ + switch (index) + { + case 0: + return 10; + case 1: + return 12; + case 2: + return 15; + case 3: + return 24; + case 4: + return 25; + case 5: + return 30; + case 6: + return 50; + case 7: + return 60; + case 8: + return 72; + default: + return 10; + } +} + +static gdouble +get_scale (gint index) +{ + switch (index) + { + case 0: + return 0.51; + case 1: + return 1.0; + case 2: + return 1.25; + case 3: + return 1.5; + case 4: + return 2.0; + default: + { + /* likely -1 returned if there is no active item from the list. + * Try a text conversion, locale-aware in such a case, assuming people write in percent. */ + gchar* active_text = gtk_combo_box_text_get_active_text (GTK_COMBO_BOX_TEXT (zoomcombo)); + gdouble zoom = g_strtod (active_text, NULL); + + /* Negative scales are inconsistent. And we want to avoid huge scaling. */ + if (zoom > 400.0) + zoom = 400.0; + else if (zoom <= 50.0) + /* FIXME: scales under 0.5 are broken. See bug 690265. */ + zoom = 50.1; + g_free (active_text); + return zoom / 100.0; + } + } +} + +static void +step_back_callback (GtkAction *action) +{ + if (playing) + gtk_action_activate (gtk_ui_manager_get_action (ui_manager, + "/anim-play-toolbar/play")); + do_back_step(); + show_frame(); +} + +static void +step_callback (GtkAction *action) +{ + if (playing) + gtk_action_activate (gtk_ui_manager_get_action (ui_manager, + "/anim-play-toolbar/play")); + do_step(); + show_frame(); +} + +static void +refresh_callback (GtkAction *action) +{ + initialize (); +} + +static void +rewind_callback (GtkAction *action) +{ + if (playing) + gtk_action_activate (gtk_ui_manager_get_action (ui_manager, + "/anim-play-toolbar/play")); + frame_number = 0; + render_frame (frame_number); + show_frame (); +} + +static void +speed_up_callback (GtkAction *action) +{ + if (settings.duration_index > 0) + --settings.duration_index; + + gtk_action_set_sensitive (action, settings.duration_index > 0); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-reset"); + gtk_action_set_sensitive (action, settings.duration_index != 3); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-down"); + gtk_action_set_sensitive (action, TRUE); + + update_combobox (); +} + +static void +speed_down_callback (GtkAction *action) +{ + if (settings.duration_index < 6) + ++settings.duration_index; + + gtk_action_set_sensitive (action, settings.duration_index < 6); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-reset"); + gtk_action_set_sensitive (action, settings.duration_index != 3); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-up"); + gtk_action_set_sensitive (action, TRUE); + + update_combobox (); +} + +static void +speed_reset_callback (GtkAction *action) +{ + settings.duration_index = 3; + + gtk_action_set_sensitive (action, FALSE); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-down"); + gtk_action_set_sensitive (action, TRUE); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-up"); + gtk_action_set_sensitive (action, TRUE); + + update_combobox (); +} + +static void +framecombo_changed (GtkWidget *combo, gpointer data) +{ + settings.default_frame_disposal = gtk_combo_box_get_active (GTK_COMBO_BOX (combo)); + init_frames (); + render_frame (frame_number); +} + +static void +speedcombo_changed (GtkWidget *combo, gpointer data) +{ + GtkAction * action; + + settings.duration_index = gtk_combo_box_get_active (GTK_COMBO_BOX (combo)); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-reset"); + gtk_action_set_sensitive (action, settings.duration_index != 3); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-down"); + gtk_action_set_sensitive (action, settings.duration_index < 6); + + action = gtk_ui_manager_get_action (ui_manager, + "/anim-play-popup/speed-up"); + gtk_action_set_sensitive (action, settings.duration_index > 0); +} + +static void +update_scale (gdouble scale) +{ + guint expected_drawing_area_width; + guint expected_drawing_area_height; + + /* FIXME: scales under 0.5 are broken. See bug 690265. */ + if (scale <= 0.5) + scale = 0.501; + + expected_drawing_area_width = width * scale; + expected_drawing_area_height = height * scale; + + gtk_widget_set_size_request (drawing_area, expected_drawing_area_width, expected_drawing_area_height); + gtk_widget_set_size_request (shape_drawing_area, expected_drawing_area_width, expected_drawing_area_height); + /* I force the shape window to a smaller size if we scale down. */ + if (detached) + { + gint x, y; + + gdk_window_get_origin (gtk_widget_get_window (shape_window), &x, &y); + gtk_window_reshow_with_initial_size (GTK_WINDOW (shape_window)); + gtk_window_move (GTK_WINDOW (shape_window), x, y); + } +} + +/* + * Callback emitted when the user hits the Enter key of the zoom combo. + */ +static void +zoomcombo_activated (GtkEntry *combo, gpointer data) +{ + update_scale (get_scale (-1)); +} + +/* + * Callback emitted when the user selects a zoom in the dropdown, + * or edits the text entry. + * We don't want to process manual edits because it greedily emits + * signals after each character deleted or added. + */ +static void +zoomcombo_changed (GtkWidget *combo, gpointer data) +{ + gint index = gtk_combo_box_get_active (GTK_COMBO_BOX (combo)); + + /* If no index, user is probably editing by hand. We wait for him to click "Enter". */ + if (index != -1) + update_scale (get_scale (index)); +} + +static void +fpscombo_changed (GtkWidget *combo, gpointer data) +{ + settings.default_frame_duration = 1000 / get_fps (gtk_combo_box_get_active (GTK_COMBO_BOX (combo))); +} + +static void +update_combobox (void) +{ + gtk_combo_box_set_active (GTK_COMBO_BOX (speedcombo), settings.duration_index); +} + +/* tag util. */ + +static gboolean +is_ms_tag (const gchar *str, + gint *duration, + gint *taglength) +{ + gint sum = 0; + gint offset; + gint length; + + length = strlen(str); + + if (str[0] != '(') + return FALSE; + + offset = 1; + + /* eat any spaces between open-parenthesis and number */ + while ((offset < length) && (str[offset] == ' ')) + offset++; + + if ((offset>=length) || (!g_ascii_isdigit (str[offset]))) + return FALSE; + + do + { + sum *= 10; + sum += str[offset] - '0'; + offset++; + } + while ((offset<length) && (g_ascii_isdigit (str[offset]))); + + if (length - offset <= 2) + return FALSE; + + /* eat any spaces between number and 'ms' */ + while ((offset < length) && (str[offset] == ' ')) + offset++; + + if (length - offset <= 2 || + g_ascii_toupper (str[offset]) != 'M' || + g_ascii_toupper (str[offset + 1]) != 'S') + return FALSE; + + offset += 2; + + /* eat any spaces between 'ms' and close-parenthesis */ + while ((offset < length) && (str[offset] == ' ')) + offset++; + + if ((length - offset < 1) || (str[offset] != ')')) + return FALSE; + + offset++; + + *duration = sum; + *taglength = offset; + + return TRUE; +} + +static gint +parse_ms_tag (const gchar *str) +{ + gint i; + gint length = strlen (str); + + for (i = 0; i < length; i++) + { + gint rtn; + gint dummy; + + if (is_ms_tag (&str[i], &rtn, &dummy)) + return rtn; + } + + return -1; +} + +static gboolean +is_disposal_tag (const gchar *str, + DisposeType *disposal, + gint *taglength) +{ + if (strlen (str) != 9) + return FALSE; + + if (strncmp (str, "(combine)", 9) == 0) + { + *taglength = 9; + *disposal = DISPOSE_COMBINE; + return TRUE; + } + else if (strncmp (str, "(replace)", 9) == 0) + { + *taglength = 9; + *disposal = DISPOSE_REPLACE; + return TRUE; + } + + return FALSE; +} + +static DisposeType +parse_disposal_tag (const gchar *str) +{ + gint i; + gint length = strlen (str); + + for (i = 0; i < length; i++) + { + DisposeType rtn; + gint dummy; + + if (is_disposal_tag (&str[i], &rtn, &dummy)) + return rtn; + } + + return settings.default_frame_disposal; +} + |