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-rw-r--r--app/tools/gimppolygonselecttool.c555
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diff --git a/app/tools/gimppolygonselecttool.c b/app/tools/gimppolygonselecttool.c
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+++ b/app/tools/gimppolygonselecttool.c
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+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * Major improvement to support polygonal segments
+ * Copyright (C) 2008 Martin Nordholts
+ *
+ * This program is polygon software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Polygon 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 "libgimpwidgets/gimpwidgets.h"
+
+#include "tools-types.h"
+
+#include "core/gimpchannel.h"
+#include "core/gimpchannel-select.h"
+#include "core/gimpimage.h"
+#include "core/gimplayer-floating-selection.h"
+
+#include "widgets/gimphelp-ids.h"
+#include "widgets/gimpwidgets-utils.h"
+
+#include "display/gimpdisplay.h"
+#include "display/gimptoolpolygon.h"
+
+#include "gimppolygonselecttool.h"
+#include "gimpselectionoptions.h"
+#include "gimptoolcontrol.h"
+
+
+struct _GimpPolygonSelectToolPrivate
+{
+ GimpToolWidget *widget;
+ GimpToolWidget *grab_widget;
+
+ gboolean pending_response;
+ gint pending_response_id;
+};
+
+
+/* local function prototypes */
+
+static void gimp_polygon_select_tool_finalize (GObject *object);
+
+static void gimp_polygon_select_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display);
+static void gimp_polygon_select_tool_button_press (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpDisplay *display);
+static void gimp_polygon_select_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display);
+static void gimp_polygon_select_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display);
+static gboolean gimp_polygon_select_tool_key_press (GimpTool *tool,
+ GdkEventKey *kevent,
+ GimpDisplay *display);
+static void gimp_polygon_select_tool_modifier_key (GimpTool *tool,
+ GdkModifierType key,
+ gboolean press,
+ GdkModifierType state,
+ GimpDisplay *display);
+static void gimp_polygon_select_tool_oper_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ gboolean proximity,
+ GimpDisplay *display);
+static void gimp_polygon_select_tool_cursor_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ GimpDisplay *display);
+
+static void gimp_polygon_select_tool_real_confirm (GimpPolygonSelectTool *poly_sel,
+ GimpDisplay *display);
+
+static void gimp_polygon_select_tool_polygon_change_complete (GimpToolWidget *polygon,
+ GimpPolygonSelectTool *poly_sel);
+static void gimp_polygon_select_tool_polygon_response (GimpToolWidget *polygon,
+ gint response_id,
+ GimpPolygonSelectTool *poly_sel);
+
+static void gimp_polygon_select_tool_start (GimpPolygonSelectTool *poly_sel,
+ GimpDisplay *display);
+
+
+G_DEFINE_TYPE_WITH_PRIVATE (GimpPolygonSelectTool, gimp_polygon_select_tool,
+ GIMP_TYPE_SELECTION_TOOL)
+
+#define parent_class gimp_polygon_select_tool_parent_class
+
+
+/* private functions */
+
+static void
+gimp_polygon_select_tool_class_init (GimpPolygonSelectToolClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
+
+ object_class->finalize = gimp_polygon_select_tool_finalize;
+
+ tool_class->control = gimp_polygon_select_tool_control;
+ tool_class->button_press = gimp_polygon_select_tool_button_press;
+ tool_class->button_release = gimp_polygon_select_tool_button_release;
+ tool_class->motion = gimp_polygon_select_tool_motion;
+ tool_class->key_press = gimp_polygon_select_tool_key_press;
+ tool_class->modifier_key = gimp_polygon_select_tool_modifier_key;
+ tool_class->oper_update = gimp_polygon_select_tool_oper_update;
+ tool_class->cursor_update = gimp_polygon_select_tool_cursor_update;
+
+ klass->change_complete = NULL;
+ klass->confirm = gimp_polygon_select_tool_real_confirm;
+}
+
+static void
+gimp_polygon_select_tool_init (GimpPolygonSelectTool *poly_sel)
+{
+ GimpTool *tool = GIMP_TOOL (poly_sel);
+ GimpSelectionTool *sel_tool = GIMP_SELECTION_TOOL (tool);
+
+ poly_sel->priv = gimp_polygon_select_tool_get_instance_private (poly_sel);
+
+ gimp_tool_control_set_motion_mode (tool->control,
+ GIMP_MOTION_MODE_EXACT);
+ gimp_tool_control_set_wants_click (tool->control, TRUE);
+ gimp_tool_control_set_wants_double_click (tool->control, TRUE);
+ gimp_tool_control_set_active_modifiers (tool->control,
+ GIMP_TOOL_ACTIVE_MODIFIERS_SEPARATE);
+ gimp_tool_control_set_precision (tool->control,
+ GIMP_CURSOR_PRECISION_SUBPIXEL);
+
+ sel_tool->allow_move = FALSE;
+}
+
+static void
+gimp_polygon_select_tool_finalize (GObject *object)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (object);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+
+ g_clear_object (&priv->widget);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_polygon_select_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+
+ switch (action)
+ {
+ case GIMP_TOOL_ACTION_PAUSE:
+ case GIMP_TOOL_ACTION_RESUME:
+ break;
+
+ case GIMP_TOOL_ACTION_HALT:
+ gimp_polygon_select_tool_halt (poly_sel);
+ break;
+
+ case GIMP_TOOL_ACTION_COMMIT:
+ break;
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
+}
+
+static void
+gimp_polygon_select_tool_button_press (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+
+ if (tool->display && tool->display != display)
+ gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, tool->display);
+
+ if (! priv->widget) /* not tool->display, we have a subclass */
+ {
+ /* First of all handle delegation to the selection mask edit logic
+ * if appropriate.
+ */
+ if (gimp_selection_tool_start_edit (GIMP_SELECTION_TOOL (poly_sel),
+ display, coords))
+ {
+ return;
+ }
+
+ gimp_polygon_select_tool_start (poly_sel, display);
+
+ gimp_tool_widget_hover (priv->widget, coords, state, TRUE);
+ }
+
+ if (gimp_tool_widget_button_press (priv->widget, coords, time, state,
+ press_type))
+ {
+ priv->grab_widget = priv->widget;
+ }
+
+ if (press_type == GIMP_BUTTON_PRESS_NORMAL)
+ gimp_tool_control_activate (tool->control);
+}
+
+static void
+gimp_polygon_select_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+ GimpImage *image = gimp_display_get_image (display);
+
+ gimp_tool_control_halt (tool->control);
+
+ switch (release_type)
+ {
+ case GIMP_BUTTON_RELEASE_CLICK:
+ case GIMP_BUTTON_RELEASE_NO_MOTION:
+ /* If there is a floating selection, anchor it */
+ if (gimp_image_get_floating_selection (image))
+ {
+ floating_sel_anchor (gimp_image_get_floating_selection (image));
+
+ gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
+
+ return;
+ }
+
+ /* fallthru */
+
+ default:
+ if (priv->grab_widget)
+ {
+ gimp_tool_widget_button_release (priv->grab_widget,
+ coords, time, state, release_type);
+ priv->grab_widget = NULL;
+ }
+ }
+
+ if (priv->pending_response)
+ {
+ gimp_polygon_select_tool_polygon_response (priv->widget,
+ priv->pending_response_id,
+ poly_sel);
+
+ priv->pending_response = FALSE;
+ }
+}
+
+static void
+gimp_polygon_select_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+
+ if (priv->grab_widget)
+ {
+ gimp_tool_widget_motion (priv->grab_widget, coords, time, state);
+ }
+}
+
+static gboolean
+gimp_polygon_select_tool_key_press (GimpTool *tool,
+ GdkEventKey *kevent,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+
+ if (priv->widget && display == tool->display)
+ {
+ return gimp_tool_widget_key_press (priv->widget, kevent);
+ }
+
+ return FALSE;
+}
+
+static void
+gimp_polygon_select_tool_modifier_key (GimpTool *tool,
+ GdkModifierType key,
+ gboolean press,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+
+ if (priv->widget && display == tool->display)
+ {
+ gimp_tool_widget_hover_modifier (priv->widget, key, press, state);
+
+ /* let GimpSelectTool handle alt+<mod> */
+ if (! (state & GDK_MOD1_MASK))
+ {
+ /* otherwise, shift/ctrl are handled by the widget */
+ state &= ~(gimp_get_extend_selection_mask () |
+ gimp_get_modify_selection_mask ());
+ }
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->modifier_key (tool, key, press, state,
+ display);
+}
+
+static void
+gimp_polygon_select_tool_oper_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ gboolean proximity,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+
+ if (priv->widget && display == tool->display)
+ {
+ gimp_tool_widget_hover (priv->widget, coords, state, proximity);
+
+ /* let GimpSelectTool handle alt+<mod> */
+ if (! (state & GDK_MOD1_MASK))
+ {
+ /* otherwise, shift/ctrl are handled by the widget */
+ state &= ~(gimp_get_extend_selection_mask () |
+ gimp_get_modify_selection_mask ());
+ }
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
+ display);
+}
+
+static void
+gimp_polygon_select_tool_cursor_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpPolygonSelectTool *poly_sel = GIMP_POLYGON_SELECT_TOOL (tool);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+ GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
+
+ if (tool->display)
+ {
+ if (priv->widget && display == tool->display)
+ {
+ gimp_tool_widget_get_cursor (priv->widget, coords, state,
+ NULL, NULL, &modifier);
+
+ /* let GimpSelectTool handle alt+<mod> */
+ if (! (state & GDK_MOD1_MASK))
+ {
+ /* otherwise, shift/ctrl are handled by the widget */
+ state &= ~(gimp_get_extend_selection_mask () |
+ gimp_get_modify_selection_mask ());
+ }
+ }
+
+ gimp_tool_set_cursor (tool, display,
+ gimp_tool_control_get_cursor (tool->control),
+ gimp_tool_control_get_tool_cursor (tool->control),
+ modifier);
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state,
+ display);
+}
+
+static void
+gimp_polygon_select_tool_real_confirm (GimpPolygonSelectTool *poly_sel,
+ GimpDisplay *display)
+{
+ gimp_tool_control (GIMP_TOOL (poly_sel), GIMP_TOOL_ACTION_COMMIT, display);
+}
+
+static void
+gimp_polygon_select_tool_polygon_change_complete (GimpToolWidget *polygon,
+ GimpPolygonSelectTool *poly_sel)
+{
+ if (GIMP_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->change_complete)
+ {
+ GIMP_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->change_complete (
+ poly_sel, GIMP_TOOL (poly_sel)->display);
+ }
+}
+
+static void
+gimp_polygon_select_tool_polygon_response (GimpToolWidget *polygon,
+ gint response_id,
+ GimpPolygonSelectTool *poly_sel)
+{
+ GimpTool *tool = GIMP_TOOL (poly_sel);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+
+ /* if we're in the middle of a click, defer the response to the
+ * button_release() event
+ */
+ if (gimp_tool_control_is_active (tool->control))
+ {
+ priv->pending_response = TRUE;
+ priv->pending_response_id = response_id;
+
+ return;
+ }
+
+ switch (response_id)
+ {
+ case GIMP_TOOL_WIDGET_RESPONSE_CONFIRM:
+ /* don't gimp_tool_control(COMMIT) here because we don't always
+ * want to HALT the tool after committing because we have a
+ * subclass, we do that in the default implementation of
+ * confirm().
+ */
+ if (GIMP_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->confirm)
+ {
+ GIMP_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->confirm (
+ poly_sel, tool->display);
+ }
+ break;
+
+ case GIMP_TOOL_WIDGET_RESPONSE_CANCEL:
+ gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
+ break;
+ }
+}
+
+static void
+gimp_polygon_select_tool_start (GimpPolygonSelectTool *poly_sel,
+ GimpDisplay *display)
+{
+ GimpTool *tool = GIMP_TOOL (poly_sel);
+ GimpPolygonSelectToolPrivate *priv = poly_sel->priv;
+ GimpDisplayShell *shell = gimp_display_get_shell (display);
+
+ tool->display = display;
+
+ priv->widget = gimp_tool_polygon_new (shell);
+
+ gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), priv->widget);
+
+ g_signal_connect (priv->widget, "change-complete",
+ G_CALLBACK (gimp_polygon_select_tool_polygon_change_complete),
+ poly_sel);
+ g_signal_connect (priv->widget, "response",
+ G_CALLBACK (gimp_polygon_select_tool_polygon_response),
+ poly_sel);
+
+ gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
+}
+
+
+/* public functions */
+
+gboolean
+gimp_polygon_select_tool_is_closed (GimpPolygonSelectTool *poly_sel)
+{
+ GimpPolygonSelectToolPrivate *priv;
+
+ g_return_val_if_fail (GIMP_IS_POLYGON_SELECT_TOOL (poly_sel), FALSE);
+
+ priv = poly_sel->priv;
+
+ if (priv->widget)
+ return gimp_tool_polygon_is_closed (GIMP_TOOL_POLYGON (priv->widget));
+
+ return FALSE;
+}
+
+void
+gimp_polygon_select_tool_get_points (GimpPolygonSelectTool *poly_sel,
+ const GimpVector2 **points,
+ gint *n_points)
+{
+ GimpPolygonSelectToolPrivate *priv;
+
+ g_return_if_fail (GIMP_IS_POLYGON_SELECT_TOOL (poly_sel));
+
+ priv = poly_sel->priv;
+
+ if (priv->widget)
+ {
+ gimp_tool_polygon_get_points (GIMP_TOOL_POLYGON (priv->widget),
+ points, n_points);
+ }
+ else
+ {
+ if (points) *points = NULL;
+ if (n_points) *n_points = 0;
+ }
+}
+
+
+/* protected functions */
+
+gboolean
+gimp_polygon_select_tool_is_grabbed (GimpPolygonSelectTool *poly_sel)
+{
+ GimpPolygonSelectToolPrivate *priv;
+
+ g_return_val_if_fail (GIMP_IS_POLYGON_SELECT_TOOL (poly_sel), FALSE);
+
+ priv = poly_sel->priv;
+
+ return priv->grab_widget != NULL;
+}
+
+void
+gimp_polygon_select_tool_halt (GimpPolygonSelectTool *poly_sel)
+{
+ GimpPolygonSelectToolPrivate *priv;
+
+ g_return_if_fail (GIMP_IS_POLYGON_SELECT_TOOL (poly_sel));
+
+ priv = poly_sel->priv;
+
+ gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (poly_sel), NULL);
+ g_clear_object (&priv->widget);
+}
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