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-rw-r--r--app/gui/splash.c736
1 files changed, 736 insertions, 0 deletions
diff --git a/app/gui/splash.c b/app/gui/splash.c
new file mode 100644
index 0000000..f257e7b
--- /dev/null
+++ b/app/gui/splash.c
@@ -0,0 +1,736 @@
+/* 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/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "gui-types.h"
+
+#include "widgets/gimpwidgets-utils.h"
+
+#include "splash.h"
+
+#include "gimp-intl.h"
+
+
+#define MEASURE_UPPER "1235678901234567890"
+#define MEASURE_LOWER "12356789012345678901234567890"
+
+
+typedef struct
+{
+ GtkWidget *window;
+ GtkWidget *area;
+ gint width;
+ gint height;
+ GtkWidget *progress;
+ GdkColor color;
+ PangoLayout *upper;
+ gint upper_x;
+ gint upper_y;
+ PangoLayout *lower;
+ gint lower_x;
+ gint lower_y;
+
+ gdouble percentage;
+ gchar *text1;
+ gchar *text2;
+
+ /* debug timer */
+ GTimer *timer;
+ gdouble last_time;
+} GimpSplash;
+
+static GimpSplash *splash = NULL;
+
+
+static void splash_position_layouts (GimpSplash *splash,
+ const gchar *text1,
+ const gchar *text2,
+ GdkRectangle *area);
+static gboolean splash_area_expose (GtkWidget *widget,
+ GdkEventExpose *event,
+ GimpSplash *splash);
+static void splash_rectangle_union (GdkRectangle *dest,
+ PangoRectangle *pango_rect,
+ gint offset_x,
+ gint offset_y);
+static gboolean splash_average_text_area (GimpSplash *splash,
+ GdkPixbuf *pixbuf,
+ GdkColor *color);
+
+static GdkPixbufAnimation *
+ splash_image_load (gint max_width,
+ gint max_height,
+ gboolean be_verbose);
+static GdkPixbufAnimation *
+ splash_image_load_from_path (const gchar *filename,
+ gint max_width,
+ gint max_height,
+ gboolean be_verbose);
+static GdkPixbufAnimation *
+ splash_image_load_from_file (GFile *file,
+ gint max_width,
+ gint max_height,
+ gboolean be_verbose);
+static GdkPixbufAnimation *
+ splash_image_pick_from_dirs (GList *dirs,
+ gint max_width,
+ gint max_height,
+ gboolean be_verbose);
+
+static void splash_timer_elapsed (void);
+
+
+/* public functions */
+
+void
+splash_create (gboolean be_verbose,
+ GdkScreen *screen,
+ gint monitor)
+{
+ GtkWidget *frame;
+ GtkWidget *vbox;
+ GdkPixbufAnimation *pixbuf;
+ PangoRectangle ink;
+ gint max_width;
+ gint max_height;
+
+ g_return_if_fail (splash == NULL);
+ g_return_if_fail (GDK_IS_SCREEN (screen));
+
+ max_width = gdk_screen_get_width (screen) / 2;
+ max_height = gdk_screen_get_height (screen) / 2;
+ pixbuf = splash_image_load (max_width, max_height, be_verbose);
+
+ if (! pixbuf)
+ return;
+
+ splash = g_slice_new0 (GimpSplash);
+
+ splash->window =
+ g_object_new (GTK_TYPE_WINDOW,
+ "type", GTK_WINDOW_TOPLEVEL,
+ "type-hint", GDK_WINDOW_TYPE_HINT_SPLASHSCREEN,
+ "title", _("GIMP Startup"),
+ "role", "gimp-startup",
+ "screen", screen,
+ "window-position", GTK_WIN_POS_CENTER,
+ "resizable", FALSE,
+ NULL);
+
+ /* Don't remove this call, it's necessary to remove decorations on Windows
+ * (which is the natural state of splash-screens). Looks like the
+ * GDK_WINDOW_TYPE_HINT_SPLASHSCREEN hint is not used on some platforms.
+ */
+ gtk_window_set_decorated (GTK_WINDOW (splash->window), FALSE);
+
+ g_signal_connect_swapped (splash->window, "delete-event",
+ G_CALLBACK (exit),
+ GINT_TO_POINTER (0));
+
+ splash->width = MIN (gdk_pixbuf_animation_get_width (pixbuf),
+ gdk_screen_get_width (screen));
+ splash->height = MIN (gdk_pixbuf_animation_get_height (pixbuf),
+ gdk_screen_get_height (screen));
+
+ frame = gtk_frame_new (NULL);
+ gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
+ gtk_container_add (GTK_CONTAINER (splash->window), frame);
+ gtk_widget_show (frame);
+
+ vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+ gtk_container_add (GTK_CONTAINER (frame), vbox);
+ gtk_widget_show (vbox);
+
+ splash->area = gtk_image_new_from_animation (pixbuf);
+ gtk_box_pack_start (GTK_BOX (vbox), splash->area, TRUE, TRUE, 0);
+ gtk_widget_show (splash->area);
+
+ gtk_widget_set_size_request (splash->area, splash->width, splash->height);
+
+ /* create the pango layouts */
+ splash->upper = gtk_widget_create_pango_layout (splash->area,
+ MEASURE_UPPER);
+ pango_layout_get_pixel_extents (splash->upper, &ink, NULL);
+
+ if (splash->width > 4 * ink.width)
+ gimp_pango_layout_set_scale (splash->upper, PANGO_SCALE_X_LARGE);
+ else if (splash->width > 3 * ink.width)
+ gimp_pango_layout_set_scale (splash->upper, PANGO_SCALE_LARGE);
+ else if (splash->width > 2 * ink.width)
+ gimp_pango_layout_set_scale (splash->upper, PANGO_SCALE_MEDIUM);
+ else
+ gimp_pango_layout_set_scale (splash->upper, PANGO_SCALE_MEDIUM);
+
+ splash->lower = gtk_widget_create_pango_layout (splash->area,
+ MEASURE_LOWER);
+ pango_layout_get_pixel_extents (splash->lower, &ink, NULL);
+
+ if (splash->width > 4 * ink.width)
+ gimp_pango_layout_set_scale (splash->lower, PANGO_SCALE_LARGE);
+ else if (splash->width > 3 * ink.width)
+ gimp_pango_layout_set_scale (splash->lower, PANGO_SCALE_MEDIUM);
+ else if (splash->width > 2 * ink.width)
+ gimp_pango_layout_set_scale (splash->lower, PANGO_SCALE_SMALL);
+ else
+ gimp_pango_layout_set_scale (splash->lower, PANGO_SCALE_X_SMALL);
+
+ /* this sets the initial layout positions */
+ splash_position_layouts (splash, "", "", NULL);
+
+ splash_average_text_area (splash,
+ gdk_pixbuf_animation_get_static_image (pixbuf),
+ &splash->color);
+
+ g_object_unref (pixbuf);
+
+ g_signal_connect_after (splash->area, "expose-event",
+ G_CALLBACK (splash_area_expose),
+ splash);
+
+ /* add a progress bar */
+ splash->progress = gtk_progress_bar_new ();
+ gtk_box_pack_end (GTK_BOX (vbox), splash->progress, FALSE, FALSE, 0);
+ gtk_widget_show (splash->progress);
+
+ gtk_widget_show (splash->window);
+
+ if (FALSE)
+ splash->timer = g_timer_new ();
+}
+
+void
+splash_destroy (void)
+{
+ if (! splash)
+ return;
+
+ gtk_widget_destroy (splash->window);
+
+ g_object_unref (splash->upper);
+ g_object_unref (splash->lower);
+
+ g_free (splash->text1);
+ g_free (splash->text2);
+
+ if (splash->timer)
+ g_timer_destroy (splash->timer);
+
+ g_slice_free (GimpSplash, splash);
+ splash = NULL;
+}
+
+void
+splash_update (const gchar *text1,
+ const gchar *text2,
+ gdouble percentage)
+{
+ static GdkRectangle prev_expose = { 0, 0, 0, 0 };
+ GdkRectangle expose = { 0, 0, 0, 0 };
+
+ g_return_if_fail (percentage >= 0.0 && percentage <= 1.0);
+
+ if (! splash)
+ return;
+
+ splash_position_layouts (splash, text1, text2, &expose);
+ gdk_rectangle_union (&expose, &prev_expose, &expose);
+
+ if (expose.width > 0 && expose.height > 0)
+ gtk_widget_queue_draw_area (splash->area,
+ expose.x, expose.y,
+ expose.width, expose.height);
+
+ prev_expose = expose;
+
+ if ((text1 == NULL || ! g_strcmp0 (text1, splash->text1)) &&
+ (text2 == NULL || ! g_strcmp0 (text2, splash->text2)) &&
+ percentage == splash->percentage)
+ {
+ if (text1)
+ {
+ g_free (splash->text1);
+ splash->text1 = g_strdup (text1);
+ }
+
+ if (text2)
+ {
+ g_free (splash->text2);
+ splash->text2 = g_strdup (text2);
+ }
+
+ gtk_progress_bar_pulse (GTK_PROGRESS_BAR (splash->progress));
+ }
+ else
+ {
+ gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (splash->progress),
+ percentage);
+ }
+
+ splash->percentage = percentage;
+
+ if (splash->timer)
+ splash_timer_elapsed ();
+
+ if (gtk_events_pending ())
+ gtk_main_iteration ();
+}
+
+
+/* private functions */
+
+static gboolean
+splash_area_expose (GtkWidget *widget,
+ GdkEventExpose *event,
+ GimpSplash *splash)
+{
+ cairo_t *cr = gdk_cairo_create (event->window);
+
+ gdk_cairo_region (cr, event->region);
+ cairo_clip (cr);
+
+ gdk_cairo_set_source_color (cr, &splash->color);
+
+ cairo_move_to (cr, splash->upper_x, splash->upper_y);
+ pango_cairo_show_layout (cr, splash->upper);
+
+ cairo_move_to (cr, splash->lower_x, splash->lower_y);
+ pango_cairo_show_layout (cr, splash->lower);
+
+ cairo_destroy (cr);
+
+ return FALSE;
+}
+
+/* area returns the union of the previous and new ink rectangles */
+static void
+splash_position_layouts (GimpSplash *splash,
+ const gchar *text1,
+ const gchar *text2,
+ GdkRectangle *area)
+{
+ PangoRectangle upper_ink;
+ PangoRectangle lower_ink;
+ gint text_height = 0;
+
+ if (text1)
+ {
+ pango_layout_get_pixel_extents (splash->upper, &upper_ink, NULL);
+
+ if (area)
+ splash_rectangle_union (area, &upper_ink,
+ splash->upper_x, splash->upper_y);
+
+ pango_layout_set_text (splash->upper, text1, -1);
+ pango_layout_get_pixel_extents (splash->upper,
+ &upper_ink, NULL);
+
+ splash->upper_x = (splash->width - upper_ink.width) / 2;
+ text_height += upper_ink.height;
+ }
+
+ if (text2)
+ {
+ pango_layout_get_pixel_extents (splash->lower, &lower_ink, NULL);
+
+ if (area)
+ splash_rectangle_union (area, &lower_ink,
+ splash->lower_x, splash->lower_y);
+
+ pango_layout_set_text (splash->lower, text2, -1);
+ pango_layout_get_pixel_extents (splash->lower,
+ &lower_ink, NULL);
+
+ splash->lower_x = (splash->width - lower_ink.width) / 2;
+ text_height += lower_ink.height;
+ }
+
+ /* For pretty printing, let's say we want at least double space. */
+ text_height *= 2;
+
+ /* The ordinates are computed in 2 steps, because we are first
+ * checking the minimal height needed for text (text_height).
+ *
+ * Ideally we are printing in the bottom quarter of the splash image,
+ * with well centered positions. But if this zone appears to be too
+ * small, we will end up using this previously computed text_height
+ * instead. Since splash images are designed to have text in the lower
+ * quarter, this may end up a bit uglier, but at least top and bottom
+ * texts won't overlay each other.
+ */
+ if (text1)
+ {
+ splash->upper_y = MIN (splash->height - text_height,
+ splash->height * 13 / 16 -
+ upper_ink.height / 2);
+
+ if (area)
+ splash_rectangle_union (area, &upper_ink,
+ splash->upper_x, splash->upper_y);
+ }
+
+ if (text2)
+ {
+ splash->lower_y = ((splash->height + splash->upper_y) / 2 -
+ lower_ink.height / 2);
+
+ if (area)
+ splash_rectangle_union (area, &lower_ink,
+ splash->lower_x, splash->lower_y);
+ }
+}
+
+static void
+splash_rectangle_union (GdkRectangle *dest,
+ PangoRectangle *pango_rect,
+ gint offset_x,
+ gint offset_y)
+{
+ GdkRectangle rect;
+
+ rect.x = pango_rect->x + offset_x;
+ rect.y = pango_rect->y + offset_y;
+ rect.width = pango_rect->width;
+ rect.height = pango_rect->height;
+
+ if (dest->width > 0 && dest->height > 0)
+ gdk_rectangle_union (dest, &rect, dest);
+ else
+ *dest = rect;
+}
+
+/* This function chooses a gray value for the text color, based on
+ * the average luminance of the text area of the splash image.
+ */
+static gboolean
+splash_average_text_area (GimpSplash *splash,
+ GdkPixbuf *pixbuf,
+ GdkColor *color)
+{
+ const guchar *pixels;
+ gint rowstride;
+ gint channels;
+ gint luminance = 0;
+ guint sum[3] = { 0, 0, 0 };
+ GdkRectangle image = { 0, 0, 0, 0 };
+ GdkRectangle area = { 0, 0, 0, 0 };
+
+ g_return_val_if_fail (GDK_IS_PIXBUF (pixbuf), FALSE);
+ g_return_val_if_fail (gdk_pixbuf_get_bits_per_sample (pixbuf) == 8, FALSE);
+
+ image.width = gdk_pixbuf_get_width (pixbuf);
+ image.height = gdk_pixbuf_get_height (pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+ channels = gdk_pixbuf_get_n_channels (pixbuf);
+ pixels = gdk_pixbuf_get_pixels (pixbuf);
+
+ splash_position_layouts (splash, MEASURE_UPPER, MEASURE_LOWER, &area);
+ splash_position_layouts (splash, "", "", NULL);
+
+ if (gdk_rectangle_intersect (&image, &area, &area))
+ {
+ const gint count = area.width * area.height;
+ gint x, y;
+
+ pixels += area.x * channels;
+ pixels += area.y * rowstride;
+
+ for (y = 0; y < area.height; y++)
+ {
+ const guchar *src = pixels;
+
+ for (x = 0; x < area.width; x++)
+ {
+ sum[0] += src[0];
+ sum[1] += src[1];
+ sum[2] += src[2];
+
+ src += channels;
+ }
+
+ pixels += rowstride;
+ }
+
+ luminance = GIMP_RGB_LUMINANCE (sum[0] / count,
+ sum[1] / count,
+ sum[2] / count);
+
+ luminance = CLAMP0255 (luminance > 127 ?
+ luminance - 223 : luminance + 223);
+
+ }
+
+ color->red = color->green = color->blue = (luminance << 8 | luminance);
+
+ return gdk_colormap_alloc_color (gtk_widget_get_colormap (splash->area),
+ color, FALSE, TRUE);
+}
+
+static GdkPixbufAnimation *
+splash_image_load (gint max_width,
+ gint max_height,
+ gboolean be_verbose)
+{
+ GdkPixbufAnimation *animation = NULL;
+ gchar *filename;
+ GFile *file;
+ GList *list;
+
+ /* File "gimp-splash.png" in personal configuration directory. */
+ filename = gimp_personal_rc_file ("gimp-splash.png");
+ animation = splash_image_load_from_path (filename,
+ max_width, max_height,
+ be_verbose);
+ g_free (filename);
+ if (animation)
+ return animation;
+
+ /* Random image under splashes/ directory in personal config dir. */
+ filename = gimp_personal_rc_file ("splashes");
+ file = g_file_new_for_path (filename);
+ g_free (filename);
+ list = NULL;
+ list = g_list_prepend (list, file);
+ animation = splash_image_pick_from_dirs (list,
+ max_width, max_height,
+ be_verbose);
+ g_list_free_full (list, g_object_unref);
+ if (animation)
+ return animation;
+
+ /* Release splash image. */
+ filename = g_build_filename (gimp_data_directory (),
+ "images", "gimp-splash.png", NULL);
+ animation = splash_image_load_from_path (filename,
+ max_width, max_height,
+ be_verbose);
+ g_free (filename);
+ if (animation)
+ return animation;
+
+ /* Random release image in installed splashes/ directory. */
+ filename = g_build_filename (gimp_data_directory (), "splashes", NULL);
+ file = g_file_new_for_path (filename);
+ g_free (filename);
+ list = NULL;
+ list = g_list_prepend (list, file);
+ animation = splash_image_pick_from_dirs (list,
+ max_width, max_height,
+ be_verbose);
+ g_list_free_full (list, g_object_unref);
+
+ return animation;
+}
+
+static GdkPixbufAnimation *
+splash_image_load_from_path (const gchar *filename,
+ gint max_width,
+ gint max_height,
+ gboolean be_verbose)
+{
+ GdkPixbufAnimation *animation;
+ GFile *file;
+
+ file = g_file_new_for_path (filename);
+ animation = splash_image_load_from_file (file,
+ max_width, max_height,
+ be_verbose);
+ g_object_unref (file);
+
+ return animation;
+}
+
+static GdkPixbufAnimation *
+splash_image_load_from_file (GFile *file,
+ gint max_width,
+ gint max_height,
+ gboolean be_verbose)
+{
+ GdkPixbufAnimation *animation = NULL;
+ GFileInfo *info;
+ GFileInputStream *input;
+ gboolean is_svg = FALSE;
+
+ if (be_verbose)
+ {
+ gchar *path;
+
+ path = g_file_get_path (file);
+
+ g_printerr ("Trying splash '%s' ... ", path);
+
+ g_free (path);
+ }
+
+ info = g_file_query_info (file,
+ G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
+ G_FILE_QUERY_INFO_NONE, NULL, NULL);
+ if (info)
+ {
+ const gchar *content_type;
+
+ content_type = g_file_info_get_content_type (info);
+ if (content_type)
+ {
+ gchar *mime_type;
+
+ mime_type = g_content_type_get_mime_type (content_type);
+ if (mime_type)
+ {
+ if (g_strcmp0 (mime_type, "image/svg+xml") == 0)
+ {
+ /* We want to treat vector images differently than
+ * pixel images. We only scale down bitmaps, but we
+ * don't try to scale them up.
+ * On the other hand, we can always scale down and up
+ * vector images so that they end up in an ideal size
+ * in all cases.
+ */
+ is_svg = TRUE;
+ }
+ g_free (mime_type);
+ }
+ }
+ g_object_unref (info);
+ }
+
+ input = g_file_read (file, NULL, NULL);
+ if (input)
+ {
+ animation = gdk_pixbuf_animation_new_from_stream (G_INPUT_STREAM (input),
+ NULL, NULL);
+ g_object_unref (input);
+ }
+
+ /* FIXME Right now, we only try to scale static images.
+ * Animated images may end up bigger than the expected max dimensions.
+ */
+ if (animation && gdk_pixbuf_animation_is_static_image (animation) &&
+ (gdk_pixbuf_animation_get_width (animation) > max_width ||
+ gdk_pixbuf_animation_get_height (animation) > max_height ||
+ is_svg))
+ {
+ GdkPixbuf *pixbuf;
+
+ input = g_file_read (file, NULL, NULL);
+ pixbuf = gdk_pixbuf_new_from_stream_at_scale (G_INPUT_STREAM (input),
+ max_width, max_height,
+ TRUE, NULL, NULL);
+ g_object_unref (input);
+ if (pixbuf)
+ {
+ GdkPixbufSimpleAnim *simple_anim = NULL;
+
+ simple_anim = gdk_pixbuf_simple_anim_new (gdk_pixbuf_get_width (pixbuf),
+ gdk_pixbuf_get_height (pixbuf),
+ 1.0);
+ if (simple_anim)
+ {
+ gdk_pixbuf_simple_anim_add_frame (simple_anim, pixbuf);
+
+ g_object_unref (animation);
+ animation = GDK_PIXBUF_ANIMATION (simple_anim);
+ }
+ g_object_unref (pixbuf);
+ }
+ }
+
+ if (be_verbose)
+ g_printerr (animation ? "OK\n" : "failed\n");
+
+ return animation;
+}
+
+static GdkPixbufAnimation *
+splash_image_pick_from_dirs (GList *dirs,
+ gint max_width,
+ gint max_height,
+ gboolean be_verbose)
+{
+ GdkPixbufAnimation *animation = NULL;
+ GList *splashes = NULL;
+ GList *iter;
+
+ for (iter = dirs; iter; iter = iter->next)
+ {
+ GFileEnumerator *enumerator;
+
+ enumerator = g_file_enumerate_children (iter->data,
+ G_FILE_ATTRIBUTE_STANDARD_NAME ","
+ G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN ","
+ G_FILE_ATTRIBUTE_TIME_MODIFIED,
+ G_FILE_QUERY_INFO_NONE,
+ NULL, NULL);
+ if (enumerator)
+ {
+ GFileInfo *info;
+
+ while ((info = g_file_enumerator_next_file (enumerator, NULL, NULL)))
+ {
+ GFile *child;
+
+ child = g_file_enumerator_get_child (enumerator, info);
+ if (g_file_query_file_type (child,
+ G_FILE_QUERY_INFO_NONE,
+ NULL) == G_FILE_TYPE_REGULAR)
+ splashes = g_list_prepend (splashes, child);
+ else
+ g_object_unref (child);
+ g_object_unref (info);
+ }
+
+ g_object_unref (enumerator);
+ }
+ }
+
+ if (splashes)
+ {
+ gint32 i = g_random_int_range (0, g_list_length (splashes));
+
+ animation = splash_image_load_from_file (g_list_nth_data (splashes, i),
+ max_width, max_height,
+ be_verbose);
+ g_list_free_full (splashes, (GDestroyNotify) g_object_unref);
+ }
+
+ return animation;
+}
+
+static void
+splash_timer_elapsed (void)
+{
+ gdouble elapsed = g_timer_elapsed (splash->timer, NULL);
+
+ g_printerr ("%8g %8g - %s %g%% - %s\n",
+ elapsed,
+ elapsed - splash->last_time,
+ splash->text1 ? splash->text1 : "",
+ splash->percentage * 100.0,
+ splash->text2 ? splash->text2 : "");
+
+ splash->last_time = elapsed;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 07:08:50 +0000