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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 03:13:10 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 03:13:10 +0000
commit3c57dd931145d43f2b0aef96c4d178135956bf91 (patch)
tree3de698981e9f0cc2c4f9569b19a5f3595e741f6b /app/display/gimpcanvascursor.c
parentInitial commit. (diff)
downloadgimp-3c57dd931145d43f2b0aef96c4d178135956bf91.tar.xz
gimp-3c57dd931145d43f2b0aef96c4d178135956bf91.zip
Adding upstream version 2.10.36.upstream/2.10.36
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'app/display/gimpcanvascursor.c')
-rw-r--r--app/display/gimpcanvascursor.c228
1 files changed, 228 insertions, 0 deletions
diff --git a/app/display/gimpcanvascursor.c b/app/display/gimpcanvascursor.c
new file mode 100644
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--- /dev/null
+++ b/app/display/gimpcanvascursor.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpcanvascursor.c
+ * Copyright (C) 2010 Michael Natterer <mitch@gimp.org>
+ *
+ * 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 <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpbase/gimpbase.h"
+#include "libgimpmath/gimpmath.h"
+
+#include "display-types.h"
+
+#include "core/gimp-cairo.h"
+
+#include "gimpcanvascursor.h"
+#include "gimpdisplayshell.h"
+
+
+#define GIMP_CURSOR_SIZE 7
+
+
+enum
+{
+ PROP_0,
+ PROP_X,
+ PROP_Y
+};
+
+
+typedef struct _GimpCanvasCursorPrivate GimpCanvasCursorPrivate;
+
+struct _GimpCanvasCursorPrivate
+{
+ gdouble x;
+ gdouble y;
+};
+
+#define GET_PRIVATE(cursor) \
+ ((GimpCanvasCursorPrivate *) gimp_canvas_cursor_get_instance_private ((GimpCanvasCursor *) (cursor)))
+
+
+/* local function prototypes */
+
+static void gimp_canvas_cursor_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_canvas_cursor_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+static void gimp_canvas_cursor_draw (GimpCanvasItem *item,
+ cairo_t *cr);
+static cairo_region_t * gimp_canvas_cursor_get_extents (GimpCanvasItem *item);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpCanvasCursor, gimp_canvas_cursor,
+ GIMP_TYPE_CANVAS_ITEM)
+
+#define parent_class gimp_canvas_cursor_parent_class
+
+
+static void
+gimp_canvas_cursor_class_init (GimpCanvasCursorClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpCanvasItemClass *item_class = GIMP_CANVAS_ITEM_CLASS (klass);
+
+ object_class->set_property = gimp_canvas_cursor_set_property;
+ object_class->get_property = gimp_canvas_cursor_get_property;
+
+ item_class->draw = gimp_canvas_cursor_draw;
+ item_class->get_extents = gimp_canvas_cursor_get_extents;
+
+ g_object_class_install_property (object_class, PROP_X,
+ g_param_spec_double ("x", NULL, NULL,
+ -GIMP_MAX_IMAGE_SIZE,
+ GIMP_MAX_IMAGE_SIZE, 0,
+ GIMP_PARAM_READWRITE));
+
+ g_object_class_install_property (object_class, PROP_Y,
+ g_param_spec_double ("y", NULL, NULL,
+ -GIMP_MAX_IMAGE_SIZE,
+ GIMP_MAX_IMAGE_SIZE, 0,
+ GIMP_PARAM_READWRITE));
+}
+
+static void
+gimp_canvas_cursor_init (GimpCanvasCursor *cursor)
+{
+ gimp_canvas_item_set_line_cap (GIMP_CANVAS_ITEM (cursor),
+ CAIRO_LINE_CAP_SQUARE);
+}
+
+static void
+gimp_canvas_cursor_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpCanvasCursorPrivate *private = GET_PRIVATE (object);
+
+ switch (property_id)
+ {
+ case PROP_X:
+ private->x = g_value_get_double (value);
+ break;
+ case PROP_Y:
+ private->y = g_value_get_double (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_canvas_cursor_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpCanvasCursorPrivate *private = GET_PRIVATE (object);
+
+ switch (property_id)
+ {
+ case PROP_X:
+ g_value_set_double (value, private->x);
+ break;
+ case PROP_Y:
+ g_value_set_double (value, private->y);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_canvas_cursor_draw (GimpCanvasItem *item,
+ cairo_t *cr)
+{
+ GimpCanvasCursorPrivate *private = GET_PRIVATE (item);
+ gdouble x, y;
+
+ x = floor (private->x) + 0.5;
+ y = floor (private->y) + 0.5;
+
+ cairo_move_to (cr, x - GIMP_CURSOR_SIZE, y);
+ cairo_line_to (cr, x + GIMP_CURSOR_SIZE, y);
+
+ cairo_move_to (cr, x, y - GIMP_CURSOR_SIZE);
+ cairo_line_to (cr, x, y + GIMP_CURSOR_SIZE);
+
+ _gimp_canvas_item_stroke (item, cr);
+}
+
+static cairo_region_t *
+gimp_canvas_cursor_get_extents (GimpCanvasItem *item)
+{
+ GimpCanvasCursorPrivate *private = GET_PRIVATE (item);
+ cairo_rectangle_int_t rectangle;
+ gdouble x, y;
+
+ x = floor (private->x) + 0.5;
+ y = floor (private->y) + 0.5;
+
+ rectangle.x = floor (x - GIMP_CURSOR_SIZE - 1.5);
+ rectangle.y = floor (y - GIMP_CURSOR_SIZE - 1.5);
+ rectangle.width = ceil (x + GIMP_CURSOR_SIZE + 1.5) - rectangle.x;
+ rectangle.height = ceil (y + GIMP_CURSOR_SIZE + 1.5) - rectangle.y;
+
+ return cairo_region_create_rectangle (&rectangle);
+}
+
+GimpCanvasItem *
+gimp_canvas_cursor_new (GimpDisplayShell *shell)
+{
+ g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
+
+ return g_object_new (GIMP_TYPE_CANVAS_CURSOR,
+ "shell", shell,
+ NULL);
+}
+
+void
+gimp_canvas_cursor_set (GimpCanvasItem *cursor,
+ gdouble x,
+ gdouble y)
+{
+ GimpCanvasCursorPrivate *private;
+
+ g_return_if_fail (GIMP_IS_CANVAS_CURSOR (cursor));
+
+ private = GET_PRIVATE (cursor);
+
+ if (private->x != x || private->y != y)
+ {
+ gimp_canvas_item_begin_change (cursor);
+
+ g_object_set (cursor,
+ "x", x,
+ "y", y,
+ NULL);
+
+ gimp_canvas_item_end_change (cursor);
+ }
+}