1 files changed, 124 insertions, 0 deletions
diff --git a/app/display/gimpdisplayshell-grab.c b/app/display/gimpdisplayshell-grab.c
new file mode 100644
index 0000000..d3bb550
--- /dev/null
+++ b/app/display/gimpdisplayshell-grab.c
@@ -0,0 +1,124 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * gimpdisplayshell-grab.c
+ *
+ * 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 "display-types.h"
+
+#include "gimpdisplayshell.h"
+#include "gimpdisplayshell-grab.h"
+
+
+gboolean
+gimp_display_shell_pointer_grab (GimpDisplayShell *shell,
+                                 const GdkEvent   *event,
+                                 GdkEventMask      event_mask)
+{
+  g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), FALSE);
+  g_return_val_if_fail (shell->pointer_grabbed == FALSE, FALSE);
+
+  if (event)
+    {
+      GdkGrabStatus status;
+
+      status = gdk_pointer_grab (gtk_widget_get_window (shell->canvas),
+                                 FALSE, event_mask, NULL, NULL,
+                                 gdk_event_get_time (event));
+
+      if (status != GDK_GRAB_SUCCESS)
+        {
+          g_printerr ("%s: gdk_pointer_grab failed with status %d\n",
+                      G_STRFUNC, status);
+          return FALSE;
+        }
+
+      shell->pointer_grab_time = gdk_event_get_time (event);
+    }
+
+  gtk_grab_add (shell->canvas);
+
+  shell->pointer_grabbed = TRUE;
+
+  return TRUE;
+}
+
+void
+gimp_display_shell_pointer_ungrab (GimpDisplayShell *shell,
+                                   const GdkEvent   *event)
+{
+  g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
+  g_return_if_fail (shell->pointer_grabbed == TRUE);
+
+  gtk_grab_remove (shell->canvas);
+
+  if (event)
+    {
+      gdk_display_pointer_ungrab (gtk_widget_get_display (shell->canvas),
+                                  shell->pointer_grab_time);
+
+      shell->pointer_grab_time = 0;
+    }
+
+  shell->pointer_grabbed = FALSE;
+}
+
+gboolean
+gimp_display_shell_keyboard_grab (GimpDisplayShell *shell,
+                                  const GdkEvent   *event)
+{
+  GdkGrabStatus status;
+
+  g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), FALSE);
+  g_return_val_if_fail (event != NULL, FALSE);
+  g_return_val_if_fail (shell->keyboard_grabbed == FALSE, FALSE);
+
+  status = gdk_keyboard_grab (gtk_widget_get_window (shell->canvas),
+                              FALSE,
+                              gdk_event_get_time (event));
+
+  if (status != GDK_GRAB_SUCCESS)
+    {
+      g_printerr ("%s: gdk_keyboard_grab failed with status %d\n",
+                  G_STRFUNC, status);
+      return FALSE;
+    }
+
+  shell->keyboard_grabbed   = TRUE;
+  shell->keyboard_grab_time = gdk_event_get_time (event);
+
+  return TRUE;
+}
+
+void
+gimp_display_shell_keyboard_ungrab (GimpDisplayShell *shell,
+                                    const GdkEvent   *event)
+{
+  g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
+  g_return_if_fail (event != NULL);
+  g_return_if_fail (shell->keyboard_grabbed == TRUE);
+
+  gdk_display_keyboard_ungrab (gtk_widget_get_display (shell->canvas),
+                               shell->keyboard_grab_time);
+
+  shell->keyboard_grabbed   = FALSE;
+  shell->keyboard_grab_time = 0;
+}