Adding upstream version 2.10.22.upstream/2.10.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 728 insertions, 0 deletions

diff --git a/app/gui/splash.c b/app/gui/splash.c
new file mode 100644
index 0000000..1499af7
--- /dev/null
+++ b/app/gui/splash.c
@@ -0,0 +1,728 @@
+/* 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);
+
+  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)
+{
+  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);
+
+  if (expose.width > 0 && expose.height > 0)
+    gtk_widget_queue_draw_area (splash->area,
+                                expose.x, expose.y,
+                                expose.width, expose.height);
+
+  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  upper_logical;
+  PangoRectangle  lower_ink;
+  PangoRectangle  lower_logical;
+  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, &upper_logical);
+
+      splash->upper_x = (splash->width - upper_logical.width) / 2;
+      text_height += upper_logical.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, &lower_logical);
+
+      splash->lower_x = (splash->width - lower_logical.width) / 2;
+      text_height += lower_logical.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_logical.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_logical.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;
+}