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-rw-r--r--app/widgets/gimpdeviceinfo-coords.c262
1 files changed, 262 insertions, 0 deletions
diff --git a/app/widgets/gimpdeviceinfo-coords.c b/app/widgets/gimpdeviceinfo-coords.c
new file mode 100644
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--- /dev/null
+++ b/app/widgets/gimpdeviceinfo-coords.c
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+/* 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 <gegl.h>
+#include <gtk/gtk.h>
+
+#include "widgets-types.h"
+
+#include "gimpdeviceinfo.h"
+#include "gimpdeviceinfo-coords.h"
+
+
+static const GimpCoords default_coords = GIMP_COORDS_DEFAULT_VALUES;
+
+
+/* public functions */
+
+gboolean
+gimp_device_info_get_event_coords (GimpDeviceInfo *info,
+ GdkWindow *window,
+ const GdkEvent *event,
+ GimpCoords *coords)
+{
+ gdouble x;
+
+ if (event && gdk_event_get_axis (event, GDK_AXIS_X, &x))
+ {
+ *coords = default_coords;
+
+ coords->x = x;
+ gdk_event_get_axis (event, GDK_AXIS_Y, &coords->y);
+
+ /* translate event coordinates to window coordinates, only
+ * happens if we drag a guide from a ruler
+ */
+ if (event->any.window &&
+ event->any.window != window)
+ {
+ GtkWidget *src_widget;
+ GtkWidget *dest_widget;
+
+ src_widget = gtk_get_event_widget ((GdkEvent *) event);
+ gdk_window_get_user_data (window, (gpointer) &dest_widget);
+
+ if (src_widget && dest_widget)
+ {
+ gint offset_x;
+ gint offset_y;
+
+ if (gtk_widget_translate_coordinates (src_widget, dest_widget,
+ 0, 0,
+ &offset_x, &offset_y))
+ {
+ coords->x += offset_x;
+ coords->y += offset_y;
+ }
+ }
+ }
+
+ if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &coords->pressure))
+ {
+ coords->pressure = gimp_device_info_map_axis (info,
+ GDK_AXIS_PRESSURE,
+ coords->pressure);
+ }
+
+ if (gdk_event_get_axis (event, GDK_AXIS_XTILT, &coords->xtilt))
+ {
+ coords->xtilt = gimp_device_info_map_axis (info,
+ GDK_AXIS_XTILT,
+ coords->xtilt);
+ }
+
+ if (gdk_event_get_axis (event, GDK_AXIS_YTILT, &coords->ytilt))
+ {
+ coords->ytilt = gimp_device_info_map_axis (info,
+ GDK_AXIS_YTILT,
+ coords->ytilt);
+ }
+
+ if (gdk_event_get_axis (event, GDK_AXIS_WHEEL, &coords->wheel))
+ {
+ coords->wheel = gimp_device_info_map_axis (info,
+ GDK_AXIS_WHEEL,
+ coords->wheel);
+ }
+
+ if (gimp_device_info_get_mode (info) != GDK_MODE_DISABLED &&
+ gdk_device_get_source (info->device) != GDK_SOURCE_MOUSE)
+ {
+ /* The event was generated by an enabled extended non-mouse device */
+ coords->extended = TRUE;
+ }
+ else
+ {
+ /* The event was generated by a not extended enabled device */
+ coords->extended = FALSE;
+ }
+
+ return TRUE;
+ }
+
+ gimp_device_info_get_device_coords (info, window, coords);
+
+ return FALSE;
+}
+
+void
+gimp_device_info_get_device_coords (GimpDeviceInfo *info,
+ GdkWindow *window,
+ GimpCoords *coords)
+{
+ gdouble axes[GDK_AXIS_LAST] = { 0, };
+
+ *coords = default_coords;
+
+ gdk_device_get_state (info->device, window, axes, NULL);
+
+ gdk_device_get_axis (info->device, axes, GDK_AXIS_X, &coords->x);
+ gdk_device_get_axis (info->device, axes, GDK_AXIS_Y, &coords->y);
+
+ if (gdk_device_get_axis (info->device,
+ axes, GDK_AXIS_PRESSURE, &coords->pressure))
+ {
+ coords->pressure = gimp_device_info_map_axis (info,
+ GDK_AXIS_PRESSURE,
+ coords->pressure);
+ }
+
+ if (gdk_device_get_axis (info->device,
+ axes, GDK_AXIS_XTILT, &coords->xtilt))
+ {
+ coords->xtilt = gimp_device_info_map_axis (info,
+ GDK_AXIS_XTILT,
+ coords->xtilt);
+ }
+
+ if (gdk_device_get_axis (info->device,
+ axes, GDK_AXIS_YTILT, &coords->ytilt))
+ {
+ coords->ytilt = gimp_device_info_map_axis (info,
+ GDK_AXIS_YTILT,
+ coords->ytilt);
+ }
+
+ if (gdk_device_get_axis (info->device,
+ axes, GDK_AXIS_WHEEL, &coords->wheel))
+ {
+ coords->wheel = gimp_device_info_map_axis (info,
+ GDK_AXIS_WHEEL,
+ coords->wheel);
+ }
+
+ if (gimp_device_info_get_mode (info) != GDK_MODE_DISABLED &&
+ gdk_device_get_source (info->device) != GDK_SOURCE_MOUSE)
+ {
+ /* The event was generated by an enabled extended non-mouse device */
+ coords->extended = TRUE;
+ }
+ else
+ {
+ /* The event was generated by a not extended enabled device */
+ coords->extended = FALSE;
+ }
+}
+
+void
+gimp_device_info_get_time_coords (GimpDeviceInfo *info,
+ GdkTimeCoord *event,
+ GimpCoords *coords)
+{
+ *coords = default_coords;
+
+ gdk_device_get_axis (info->device, event->axes, GDK_AXIS_X, &coords->x);
+ gdk_device_get_axis (info->device, event->axes, GDK_AXIS_Y, &coords->y);
+
+ /* CLAMP() the return value of each *_get_axis() call to be safe
+ * against buggy XInput drivers.
+ */
+
+ if (gdk_device_get_axis (info->device,
+ event->axes, GDK_AXIS_PRESSURE, &coords->pressure))
+ {
+ coords->pressure = gimp_device_info_map_axis (info,
+ GDK_AXIS_PRESSURE,
+ coords->pressure);
+ }
+
+ if (gdk_device_get_axis (info->device,
+ event->axes, GDK_AXIS_XTILT, &coords->xtilt))
+ {
+ coords->xtilt = gimp_device_info_map_axis (info,
+ GDK_AXIS_XTILT,
+ coords->xtilt);
+ }
+
+ if (gdk_device_get_axis (info->device,
+ event->axes, GDK_AXIS_YTILT, &coords->ytilt))
+ {
+ coords->ytilt = gimp_device_info_map_axis (info,
+ GDK_AXIS_YTILT,
+ coords->ytilt);
+ }
+
+ if (gdk_device_get_axis (info->device,
+ event->axes, GDK_AXIS_WHEEL, &coords->wheel))
+ {
+ coords->wheel = gimp_device_info_map_axis (info,
+ GDK_AXIS_WHEEL,
+ coords->wheel);
+ }
+
+ if (gimp_device_info_get_mode (info) != GDK_MODE_DISABLED &&
+ gdk_device_get_source (info->device) != GDK_SOURCE_MOUSE)
+ {
+ /* The event was generated by an enabled extended non-mouse device */
+ coords->extended = TRUE;
+ }
+ else
+ {
+ /* The event was generated by a not extended enabled device */
+ coords->extended = FALSE;
+ }
+}
+
+gboolean
+gimp_device_info_get_event_state (GimpDeviceInfo *info,
+ GdkWindow *window,
+ const GdkEvent *event,
+ GdkModifierType *state)
+{
+ if (gdk_event_get_state (event, state))
+ return TRUE;
+
+ gimp_device_info_get_device_state (info, window, state);
+
+ return FALSE;
+}
+
+void
+gimp_device_info_get_device_state (GimpDeviceInfo *info,
+ GdkWindow *window,
+ GdkModifierType *state)
+{
+ gdk_device_get_state (info->device, window, NULL, state);
+}
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