Adding upstream version 2.10.22.upstream/2.10.22upstream

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

1 files changed, 526 insertions, 0 deletions

diff --git a/app/widgets/gimpcursor.c b/app/widgets/gimpcursor.c
new file mode 100644
index 0000000..7509f48
--- /dev/null
+++ b/app/widgets/gimpcursor.c
@@ -0,0 +1,526 @@
+/* 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 <gtk/gtk.h>
+
+#include "widgets-types.h"
+
+#include "gimpcursor.h"
+#include "gimpwidgets-utils.h"
+
+#include "cursors/gimp-tool-cursors.c"
+
+
+#define cursor_default_hot_x 10
+#define cursor_default_hot_y 10
+
+#define cursor_mouse_hot_x 3
+#define cursor_mouse_hot_y 2
+#define cursor_crosshair_hot_x 15
+#define cursor_crosshair_hot_y 15
+#define cursor_zoom_hot_x 8
+#define cursor_zoom_hot_y 8
+#define cursor_color_picker_hot_x 1
+#define cursor_color_picker_hot_y 30
+
+
+typedef struct _GimpCursor GimpCursor;
+
+struct _GimpCursor
+{
+  const gchar *resource_name;
+  const gint   hot_x;
+  const gint   hot_y;
+
+  GdkPixbuf   *pixbuf;
+  GdkPixbuf   *pixbuf_x2;
+};
+
+
+static GimpCursor gimp_cursors[] =
+{
+  /* these have to match up with enum GimpCursorType in widgets-enums.h */
+
+  {
+    "cursor-none",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-mouse",
+    cursor_mouse_hot_x, cursor_mouse_hot_y
+  },
+  {
+    "cursor-crosshair",
+    cursor_crosshair_hot_x, cursor_crosshair_hot_y
+  },
+  {
+    "cursor-crosshair-small",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-bad",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-move",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-zoom",
+    cursor_zoom_hot_x, cursor_zoom_hot_y
+  },
+  {
+    "cursor-color-picker",
+    cursor_color_picker_hot_x, cursor_color_picker_hot_y
+  },
+  {
+    "cursor-corner-top",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-corner-top-right",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-corner-right",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-corner-bottom-right",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-corner-bottom",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-corner-bottom-left",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-corner-left",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-corner-top-left",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-top",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-top-right",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-right",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-bottom-right",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-bottom",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-bottom-left",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-left",
+    cursor_default_hot_x, cursor_default_hot_y
+  },
+  {
+    "cursor-side-top-left",
+    cursor_default_hot_x, cursor_default_hot_y
+  }
+};
+
+static GimpCursor gimp_tool_cursors[] =
+{
+  /* these have to match up with enum GimpToolCursorType in widgets-enums.h */
+
+  { NULL },
+  { "tool-rect-select" },
+  { "tool-ellipse-select" },
+  { "tool-free-select" },
+  { "tool-polygon-select" },
+  { "tool-fuzzy-select" },
+  { "tool-paths" },
+  { "tool-paths-anchor" },
+  { "tool-paths-control" },
+  { "tool-paths-segment" },
+  { "tool-iscissors" },
+  { "tool-move" },
+  { "tool-zoom" },
+  { "tool-crop" },
+  { "tool-resize" },
+  { "tool-rotate" },
+  { "tool-shear" },
+  { "tool-perspective" },
+  { "tool-transform-3d-camera" },
+  { "tool-flip-horizontal" },
+  { "tool-flip-vertical" },
+  { "tool-text" },
+  { "tool-color-picker" },
+  { "tool-bucket-fill" },
+  { "tool-gradient" },
+  { "tool-pencil" },
+  { "tool-paintbrush" },
+  { "tool-airbrush" },
+  { "tool-ink" },
+  { "tool-clone" },
+  { "tool-heal" },
+  { "tool-eraser" },
+  { "tool-smudge" },
+  { "tool-blur" },
+  { "tool-dodge" },
+  { "tool-burn" },
+  { "tool-measure" },
+  { "tool-warp" },
+  { "tool-hand" }
+};
+
+static GimpCursor gimp_cursor_modifiers[] =
+{
+  /* these have to match up with enum GimpCursorModifier in widgets-enums.h */
+
+  { NULL },
+  { "modifier-bad" },
+  { "modifier-plus" },
+  { "modifier-minus" },
+  { "modifier-intersect" },
+  { "modifier-move" },
+  { "modifier-resize" },
+  { "modifier-rotate" },
+  { "modifier-zoom" },
+  { "modifier-control" },
+  { "modifier-anchor" },
+  { "modifier-foreground" },
+  { "modifier-background" },
+  { "modifier-pattern" },
+  { "modifier-join" },
+  { "modifier-select" }
+};
+
+
+static const GdkPixbuf *
+get_cursor_pixbuf (GimpCursor *cursor,
+                   gint        scale_factor)
+{
+  gchar  *resource_path;
+  GError *error = NULL;
+
+  if (! cursor->pixbuf)
+    {
+      resource_path = g_strconcat ("/org/gimp/tool-cursors/",
+                                   cursor->resource_name,
+                                   ".png", NULL);
+
+      cursor->pixbuf = gdk_pixbuf_new_from_resource (resource_path, &error);
+
+      if (! cursor->pixbuf)
+        {
+          g_critical ("Failed to create cursor image '%s': %s",
+                      resource_path, error->message);
+          g_clear_error (&error);
+        }
+
+      g_free (resource_path);
+    }
+
+  if (scale_factor == 2 && ! cursor->pixbuf_x2)
+    {
+      resource_path = g_strconcat ("/org/gimp/tool-cursors/",
+                                   cursor->resource_name,
+                                   "-x2.png", NULL);
+
+      cursor->pixbuf_x2 = gdk_pixbuf_new_from_resource (resource_path, &error);
+
+      if (! cursor->pixbuf_x2)
+        {
+          /* no critical here until we actually have the cursor files */
+          g_printerr ("Failed to create scaled cursor image '%s' "
+                      "falling back to upscaling default cursor: %s\n",
+                      resource_path, error->message);
+          g_clear_error (&error);
+
+          if (cursor->pixbuf)
+            {
+              gint width  = gdk_pixbuf_get_width  (cursor->pixbuf);
+              gint height = gdk_pixbuf_get_height (cursor->pixbuf);
+
+              cursor->pixbuf_x2 = gdk_pixbuf_scale_simple (cursor->pixbuf,
+                                                           width  * 2,
+                                                           height * 2,
+                                                           GDK_INTERP_NEAREST);
+            }
+        }
+
+      g_free (resource_path);
+    }
+
+  if (scale_factor == 2)
+    return cursor->pixbuf_x2;
+  else
+    return cursor->pixbuf;
+}
+
+GdkCursor *
+gimp_cursor_new (GdkWindow          *window,
+                 GimpHandedness      cursor_handedness,
+                 GimpCursorType      cursor_type,
+                 GimpToolCursorType  tool_cursor,
+                 GimpCursorModifier  modifier)
+{
+  GdkDisplay *display;
+  GimpCursor *bmcursor   = NULL;
+  GimpCursor *bmmodifier = NULL;
+  GimpCursor *bmtool     = NULL;
+  GdkCursor  *cursor;
+  GdkPixbuf  *pixbuf;
+  gint        scale_factor;
+  gint        hot_x;
+  gint        hot_y;
+
+  g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
+  g_return_val_if_fail (cursor_type < GIMP_CURSOR_LAST, NULL);
+
+  display = gdk_window_get_display (window);
+
+  if (cursor_type <= (GimpCursorType) GDK_LAST_CURSOR)
+    return gdk_cursor_new_for_display (display, (GdkCursorType) cursor_type);
+
+  g_return_val_if_fail (cursor_type >= GIMP_CURSOR_NONE, NULL);
+
+  /*  disallow the small tool cursor with some cursors
+   */
+  if (cursor_type <= GIMP_CURSOR_NONE         ||
+      cursor_type == GIMP_CURSOR_CROSSHAIR    ||
+      cursor_type == GIMP_CURSOR_ZOOM         ||
+      cursor_type == GIMP_CURSOR_COLOR_PICKER ||
+      cursor_type >= GIMP_CURSOR_LAST)
+    {
+      tool_cursor = GIMP_TOOL_CURSOR_NONE;
+    }
+
+  /*  don't allow anything with the empty cursor
+   */
+  if (cursor_type == GIMP_CURSOR_NONE)
+    {
+      tool_cursor = GIMP_TOOL_CURSOR_NONE;
+      modifier    = GIMP_CURSOR_MODIFIER_NONE;
+    }
+
+  /*  some more sanity checks
+   */
+  if (cursor_type == GIMP_CURSOR_MOVE &&
+      modifier    == GIMP_CURSOR_MODIFIER_MOVE)
+    {
+      modifier = GIMP_CURSOR_MODIFIER_NONE;
+    }
+
+  /*  when cursor is "corner" or "side" sides must be exchanged for
+   *  left-hand-mice-flipping of pixbuf below
+   */
+
+  if (cursor_handedness == GIMP_HANDEDNESS_LEFT)
+    {
+      switch (cursor_type)
+        {
+        case GIMP_CURSOR_CORNER_TOP_LEFT:
+          cursor_type = GIMP_CURSOR_CORNER_TOP_RIGHT; break;
+
+        case GIMP_CURSOR_CORNER_TOP_RIGHT:
+          cursor_type = GIMP_CURSOR_CORNER_TOP_LEFT; break;
+
+        case GIMP_CURSOR_CORNER_LEFT:
+          cursor_type = GIMP_CURSOR_CORNER_RIGHT; break;
+
+        case GIMP_CURSOR_CORNER_RIGHT:
+          cursor_type = GIMP_CURSOR_CORNER_LEFT; break;
+
+        case GIMP_CURSOR_CORNER_BOTTOM_LEFT:
+          cursor_type = GIMP_CURSOR_CORNER_BOTTOM_RIGHT; break;
+
+        case GIMP_CURSOR_CORNER_BOTTOM_RIGHT:
+          cursor_type = GIMP_CURSOR_CORNER_BOTTOM_LEFT; break;
+
+        case GIMP_CURSOR_SIDE_TOP_LEFT:
+          cursor_type = GIMP_CURSOR_SIDE_TOP_RIGHT; break;
+
+        case GIMP_CURSOR_SIDE_TOP_RIGHT:
+          cursor_type = GIMP_CURSOR_SIDE_TOP_LEFT; break;
+
+        case GIMP_CURSOR_SIDE_LEFT:
+          cursor_type = GIMP_CURSOR_SIDE_RIGHT; break;
+
+        case GIMP_CURSOR_SIDE_RIGHT:
+          cursor_type = GIMP_CURSOR_SIDE_LEFT; break;
+
+        case GIMP_CURSOR_SIDE_BOTTOM_LEFT:
+          cursor_type = GIMP_CURSOR_SIDE_BOTTOM_RIGHT; break;
+
+        case GIMP_CURSOR_SIDE_BOTTOM_RIGHT:
+          cursor_type = GIMP_CURSOR_SIDE_BOTTOM_LEFT; break;
+
+        default:
+          break;
+        }
+    }
+
+  /*  prepare the main cursor  */
+
+  cursor_type -= GIMP_CURSOR_NONE;
+  bmcursor = &gimp_cursors[cursor_type];
+
+  /*  prepare the tool cursor  */
+
+  if (tool_cursor > GIMP_TOOL_CURSOR_NONE &&
+      tool_cursor < GIMP_TOOL_CURSOR_LAST)
+    {
+      bmtool = &gimp_tool_cursors[tool_cursor];
+    }
+
+  /*  prepare the cursor modifier  */
+
+  if (modifier > GIMP_CURSOR_MODIFIER_NONE &&
+      modifier < GIMP_CURSOR_MODIFIER_LAST)
+    {
+      bmmodifier = &gimp_cursor_modifiers[modifier];
+    }
+
+  scale_factor = 1;
+
+  /* guess HiDPI */
+  {
+    GdkScreen *screen = gdk_window_get_screen (window);
+    gdouble    xres, yres;
+
+    gimp_get_monitor_resolution (screen,
+                                 gdk_screen_get_monitor_at_window (screen, window),
+                                 &xres, &yres);
+
+    if ((xres + yres) / 2.0 > 250.0)
+      scale_factor = 2;
+  }
+
+  pixbuf = gdk_pixbuf_copy (get_cursor_pixbuf (bmcursor, scale_factor));
+
+  if (bmmodifier || bmtool)
+    {
+      gint width  = gdk_pixbuf_get_width  (pixbuf);
+      gint height = gdk_pixbuf_get_height (pixbuf);
+
+      if (bmmodifier)
+        gdk_pixbuf_composite (get_cursor_pixbuf (bmmodifier, scale_factor),
+                              pixbuf,
+                              0, 0, width, height,
+                              0.0, 0.0, 1.0, 1.0,
+                              GDK_INTERP_NEAREST, 200);
+
+      if (bmtool)
+        gdk_pixbuf_composite (get_cursor_pixbuf (bmtool, scale_factor),
+                              pixbuf,
+                              0, 0, width, height,
+                              0.0, 0.0, 1.0, 1.0,
+                              GDK_INTERP_NEAREST, 200);
+    }
+
+  hot_x = bmcursor->hot_x;
+  hot_y = bmcursor->hot_y;
+
+  /*  flip the cursor if mouse setting is left-handed  */
+
+  if (cursor_handedness == GIMP_HANDEDNESS_LEFT)
+    {
+      GdkPixbuf *flipped = gdk_pixbuf_flip (pixbuf, TRUE);
+      gint       width   = gdk_pixbuf_get_width (flipped);
+
+      g_object_unref (pixbuf);
+      pixbuf = flipped;
+
+      hot_x = (width - 1) - hot_x;
+    }
+
+  cursor = gdk_cursor_new_from_pixbuf (display, pixbuf,
+                                       hot_x * scale_factor,
+                                       hot_y * scale_factor);
+
+  g_object_unref (pixbuf);
+
+  return cursor;
+}
+
+void
+gimp_cursor_set (GtkWidget          *widget,
+                 GimpHandedness      cursor_handedness,
+                 GimpCursorType      cursor_type,
+                 GimpToolCursorType  tool_cursor,
+                 GimpCursorModifier  modifier)
+{
+  GdkWindow *window;
+  GdkCursor *cursor;
+
+  g_return_if_fail (GTK_IS_WIDGET (widget));
+  g_return_if_fail (gtk_widget_get_realized (widget));
+
+  window = gtk_widget_get_window (widget);
+
+  cursor = gimp_cursor_new (window,
+                            cursor_handedness,
+                            cursor_type,
+                            tool_cursor,
+                            modifier);
+  gdk_window_set_cursor (window, cursor);
+  gdk_cursor_unref (cursor);
+
+  gdk_display_flush (gdk_window_get_display (window));
+}
+
+GimpCursorType
+gimp_cursor_rotate (GimpCursorType  cursor,
+                    gdouble         angle)
+{
+  if (cursor >= GIMP_CURSOR_CORNER_TOP &&
+      cursor <= GIMP_CURSOR_SIDE_TOP_LEFT)
+    {
+      gint offset = (gint) (angle / 45 + 0.5);
+
+      if (cursor < GIMP_CURSOR_SIDE_TOP)
+        {
+          cursor += offset;
+
+          if (cursor > GIMP_CURSOR_CORNER_TOP_LEFT)
+            cursor -= 8;
+        }
+      else
+        {
+          cursor += offset;
+
+          if (cursor > GIMP_CURSOR_SIDE_TOP_LEFT)
+            cursor -= 8;
+        }
+   }
+
+  return cursor;
+}