560 lines
21 KiB
C
560 lines
21 KiB
C
/* PIKA - Photo and Image Kooker Application
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* a rebranding of The GNU Image Manipulation Program (created with heckimp)
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* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
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*
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* Original copyright, applying to most contents (license remains unchanged):
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* Major improvement to support polygonal segments
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* Copyright (C) 2008 Martin Nordholts
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*
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* This program is polygon software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Polygon Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include "libpikawidgets/pikawidgets.h"
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#include "tools-types.h"
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#include "core/pikachannel.h"
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#include "core/pikachannel-select.h"
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#include "core/pikaimage.h"
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#include "core/pikalayer-floating-selection.h"
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#include "widgets/pikahelp-ids.h"
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#include "widgets/pikawidgets-utils.h"
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#include "display/pikadisplay.h"
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#include "display/pikatoolpolygon.h"
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#include "pikapolygonselecttool.h"
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#include "pikaselectionoptions.h"
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#include "pikatoolcontrol.h"
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struct _PikaPolygonSelectToolPrivate
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{
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PikaToolWidget *widget;
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PikaToolWidget *grab_widget;
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gboolean pending_response;
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gint pending_response_id;
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};
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/* local function prototypes */
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static void pika_polygon_select_tool_finalize (GObject *object);
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static void pika_polygon_select_tool_control (PikaTool *tool,
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PikaToolAction action,
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PikaDisplay *display);
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static void pika_polygon_select_tool_button_press (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonPressType press_type,
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PikaDisplay *display);
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static void pika_polygon_select_tool_button_release (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonReleaseType release_type,
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PikaDisplay *display);
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static void pika_polygon_select_tool_motion (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaDisplay *display);
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static gboolean pika_polygon_select_tool_key_press (PikaTool *tool,
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GdkEventKey *kevent,
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PikaDisplay *display);
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static void pika_polygon_select_tool_modifier_key (PikaTool *tool,
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GdkModifierType key,
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gboolean press,
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GdkModifierType state,
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PikaDisplay *display);
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static void pika_polygon_select_tool_oper_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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gboolean proximity,
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PikaDisplay *display);
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static void pika_polygon_select_tool_cursor_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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PikaDisplay *display);
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static void pika_polygon_select_tool_real_confirm (PikaPolygonSelectTool *poly_sel,
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PikaDisplay *display);
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static void pika_polygon_select_tool_polygon_change_complete (PikaToolWidget *polygon,
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PikaPolygonSelectTool *poly_sel);
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static void pika_polygon_select_tool_polygon_response (PikaToolWidget *polygon,
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gint response_id,
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PikaPolygonSelectTool *poly_sel);
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static void pika_polygon_select_tool_start (PikaPolygonSelectTool *poly_sel,
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PikaDisplay *display);
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G_DEFINE_TYPE_WITH_PRIVATE (PikaPolygonSelectTool, pika_polygon_select_tool,
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PIKA_TYPE_SELECTION_TOOL)
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#define parent_class pika_polygon_select_tool_parent_class
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/* private functions */
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static void
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pika_polygon_select_tool_class_init (PikaPolygonSelectToolClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
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object_class->finalize = pika_polygon_select_tool_finalize;
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tool_class->control = pika_polygon_select_tool_control;
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tool_class->button_press = pika_polygon_select_tool_button_press;
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tool_class->button_release = pika_polygon_select_tool_button_release;
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tool_class->motion = pika_polygon_select_tool_motion;
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tool_class->key_press = pika_polygon_select_tool_key_press;
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tool_class->modifier_key = pika_polygon_select_tool_modifier_key;
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tool_class->oper_update = pika_polygon_select_tool_oper_update;
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tool_class->cursor_update = pika_polygon_select_tool_cursor_update;
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klass->change_complete = NULL;
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klass->confirm = pika_polygon_select_tool_real_confirm;
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}
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static void
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pika_polygon_select_tool_init (PikaPolygonSelectTool *poly_sel)
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{
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PikaTool *tool = PIKA_TOOL (poly_sel);
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PikaSelectionTool *sel_tool = PIKA_SELECTION_TOOL (tool);
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poly_sel->priv = pika_polygon_select_tool_get_instance_private (poly_sel);
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pika_tool_control_set_motion_mode (tool->control,
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PIKA_MOTION_MODE_EXACT);
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pika_tool_control_set_wants_click (tool->control, TRUE);
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pika_tool_control_set_wants_double_click (tool->control, TRUE);
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pika_tool_control_set_active_modifiers (tool->control,
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PIKA_TOOL_ACTIVE_MODIFIERS_SEPARATE);
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pika_tool_control_set_precision (tool->control,
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PIKA_CURSOR_PRECISION_SUBPIXEL);
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sel_tool->allow_move = FALSE;
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}
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static void
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pika_polygon_select_tool_finalize (GObject *object)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (object);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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g_clear_object (&priv->widget);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static void
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pika_polygon_select_tool_control (PikaTool *tool,
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PikaToolAction action,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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switch (action)
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{
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case PIKA_TOOL_ACTION_PAUSE:
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case PIKA_TOOL_ACTION_RESUME:
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break;
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case PIKA_TOOL_ACTION_HALT:
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pika_polygon_select_tool_halt (poly_sel);
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break;
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case PIKA_TOOL_ACTION_COMMIT:
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break;
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}
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PIKA_TOOL_CLASS (parent_class)->control (tool, action, display);
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}
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static void
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pika_polygon_select_tool_button_press (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonPressType press_type,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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if (tool->display && tool->display != display)
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pika_tool_control (tool, PIKA_TOOL_ACTION_COMMIT, tool->display);
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if (! priv->widget) /* not tool->display, we have a subclass */
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{
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/* First of all handle delegation to the selection mask edit logic
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* if appropriate.
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*/
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if (pika_selection_tool_start_edit (PIKA_SELECTION_TOOL (poly_sel),
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display, coords))
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{
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return;
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}
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pika_polygon_select_tool_start (poly_sel, display);
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pika_tool_widget_hover (priv->widget, coords, state, TRUE);
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}
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if (pika_tool_widget_button_press (priv->widget, coords, time, state,
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press_type))
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{
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priv->grab_widget = priv->widget;
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}
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if (press_type == PIKA_BUTTON_PRESS_NORMAL)
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pika_tool_control_activate (tool->control);
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}
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static void
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pika_polygon_select_tool_button_release (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaButtonReleaseType release_type,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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PikaImage *image = pika_display_get_image (display);
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pika_tool_control_halt (tool->control);
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switch (release_type)
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{
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case PIKA_BUTTON_RELEASE_CLICK:
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case PIKA_BUTTON_RELEASE_NO_MOTION:
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/* If there is a floating selection, anchor it */
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if (pika_image_get_floating_selection (image))
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{
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floating_sel_anchor (pika_image_get_floating_selection (image));
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pika_tool_control (tool, PIKA_TOOL_ACTION_HALT, display);
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return;
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}
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/* fallthru */
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default:
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if (priv->grab_widget)
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{
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pika_tool_widget_button_release (priv->grab_widget,
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coords, time, state, release_type);
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priv->grab_widget = NULL;
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}
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}
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if (priv->pending_response)
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{
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pika_polygon_select_tool_polygon_response (priv->widget,
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priv->pending_response_id,
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poly_sel);
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priv->pending_response = FALSE;
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}
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}
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static void
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pika_polygon_select_tool_motion (PikaTool *tool,
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const PikaCoords *coords,
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guint32 time,
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GdkModifierType state,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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if (priv->grab_widget)
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{
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pika_tool_widget_motion (priv->grab_widget, coords, time, state);
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}
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}
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static gboolean
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pika_polygon_select_tool_key_press (PikaTool *tool,
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GdkEventKey *kevent,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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if (priv->widget && display == tool->display)
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{
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return pika_tool_widget_key_press (priv->widget, kevent);
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}
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return FALSE;
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}
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static void
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pika_polygon_select_tool_modifier_key (PikaTool *tool,
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GdkModifierType key,
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gboolean press,
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GdkModifierType state,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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if (priv->widget && display == tool->display)
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{
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pika_tool_widget_hover_modifier (priv->widget, key, press, state);
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/* let PikaSelectTool handle alt+<mod> */
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if (! (state & GDK_MOD1_MASK))
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{
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/* otherwise, shift/ctrl are handled by the widget */
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state &= ~(pika_get_extend_selection_mask () |
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pika_get_modify_selection_mask ());
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}
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}
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PIKA_TOOL_CLASS (parent_class)->modifier_key (tool, key, press, state,
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display);
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}
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static void
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pika_polygon_select_tool_oper_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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gboolean proximity,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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if (priv->widget && display == tool->display)
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{
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pika_tool_widget_hover (priv->widget, coords, state, proximity);
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/* let PikaSelectTool handle alt+<mod> */
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if (! (state & GDK_MOD1_MASK))
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{
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/* otherwise, shift/ctrl are handled by the widget */
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state &= ~(pika_get_extend_selection_mask () |
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pika_get_modify_selection_mask ());
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}
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}
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PIKA_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
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display);
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}
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static void
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pika_polygon_select_tool_cursor_update (PikaTool *tool,
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const PikaCoords *coords,
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GdkModifierType state,
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PikaDisplay *display)
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{
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PikaPolygonSelectTool *poly_sel = PIKA_POLYGON_SELECT_TOOL (tool);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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PikaCursorModifier modifier = PIKA_CURSOR_MODIFIER_NONE;
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if (tool->display)
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{
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if (priv->widget && display == tool->display)
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{
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pika_tool_widget_get_cursor (priv->widget, coords, state,
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NULL, NULL, &modifier);
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/* let PikaSelectTool handle alt+<mod> */
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if (! (state & GDK_MOD1_MASK))
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{
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/* otherwise, shift/ctrl are handled by the widget */
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state &= ~(pika_get_extend_selection_mask () |
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pika_get_modify_selection_mask ());
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}
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}
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pika_tool_set_cursor (tool, display,
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pika_tool_control_get_cursor (tool->control),
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pika_tool_control_get_tool_cursor (tool->control),
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modifier);
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}
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PIKA_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state,
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display);
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}
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static void
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pika_polygon_select_tool_real_confirm (PikaPolygonSelectTool *poly_sel,
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PikaDisplay *display)
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{
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pika_tool_control (PIKA_TOOL (poly_sel), PIKA_TOOL_ACTION_COMMIT, display);
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}
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static void
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pika_polygon_select_tool_polygon_change_complete (PikaToolWidget *polygon,
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PikaPolygonSelectTool *poly_sel)
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{
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if (PIKA_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->change_complete)
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{
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PIKA_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->change_complete (
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poly_sel, PIKA_TOOL (poly_sel)->display);
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}
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}
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static void
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pika_polygon_select_tool_polygon_response (PikaToolWidget *polygon,
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gint response_id,
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PikaPolygonSelectTool *poly_sel)
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{
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PikaTool *tool = PIKA_TOOL (poly_sel);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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/* if we're in the middle of a click, defer the response to the
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* button_release() event
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*/
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if (pika_tool_control_is_active (tool->control))
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{
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priv->pending_response = TRUE;
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priv->pending_response_id = response_id;
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return;
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}
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switch (response_id)
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{
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case PIKA_TOOL_WIDGET_RESPONSE_CONFIRM:
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/* don't pika_tool_control(COMMIT) here because we don't always
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* want to HALT the tool after committing because we have a
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* subclass, we do that in the default implementation of
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* confirm().
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*/
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if (PIKA_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->confirm)
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{
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PIKA_POLYGON_SELECT_TOOL_GET_CLASS (poly_sel)->confirm (
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poly_sel, tool->display);
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}
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break;
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case PIKA_TOOL_WIDGET_RESPONSE_CANCEL:
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pika_tool_control (tool, PIKA_TOOL_ACTION_HALT, tool->display);
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break;
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}
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}
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static void
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pika_polygon_select_tool_start (PikaPolygonSelectTool *poly_sel,
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PikaDisplay *display)
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{
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PikaTool *tool = PIKA_TOOL (poly_sel);
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PikaPolygonSelectToolPrivate *priv = poly_sel->priv;
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PikaDisplayShell *shell = pika_display_get_shell (display);
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tool->display = display;
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priv->widget = pika_tool_polygon_new (shell);
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pika_draw_tool_set_widget (PIKA_DRAW_TOOL (tool), priv->widget);
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g_signal_connect (priv->widget, "change-complete",
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G_CALLBACK (pika_polygon_select_tool_polygon_change_complete),
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poly_sel);
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g_signal_connect (priv->widget, "response",
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G_CALLBACK (pika_polygon_select_tool_polygon_response),
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poly_sel);
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pika_draw_tool_start (PIKA_DRAW_TOOL (tool), display);
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}
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/* public functions */
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gboolean
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pika_polygon_select_tool_is_closed (PikaPolygonSelectTool *poly_sel)
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{
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PikaPolygonSelectToolPrivate *priv;
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g_return_val_if_fail (PIKA_IS_POLYGON_SELECT_TOOL (poly_sel), FALSE);
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priv = poly_sel->priv;
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if (priv->widget)
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return pika_tool_polygon_is_closed (PIKA_TOOL_POLYGON (priv->widget));
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return FALSE;
|
|
}
|
|
|
|
void
|
|
pika_polygon_select_tool_get_points (PikaPolygonSelectTool *poly_sel,
|
|
const PikaVector2 **points,
|
|
gint *n_points)
|
|
{
|
|
PikaPolygonSelectToolPrivate *priv;
|
|
|
|
g_return_if_fail (PIKA_IS_POLYGON_SELECT_TOOL (poly_sel));
|
|
|
|
priv = poly_sel->priv;
|
|
|
|
if (priv->widget)
|
|
{
|
|
pika_tool_polygon_get_points (PIKA_TOOL_POLYGON (priv->widget),
|
|
points, n_points);
|
|
}
|
|
else
|
|
{
|
|
if (points) *points = NULL;
|
|
if (n_points) *n_points = 0;
|
|
}
|
|
}
|
|
|
|
|
|
/* protected functions */
|
|
|
|
gboolean
|
|
pika_polygon_select_tool_is_grabbed (PikaPolygonSelectTool *poly_sel)
|
|
{
|
|
PikaPolygonSelectToolPrivate *priv;
|
|
|
|
g_return_val_if_fail (PIKA_IS_POLYGON_SELECT_TOOL (poly_sel), FALSE);
|
|
|
|
priv = poly_sel->priv;
|
|
|
|
return priv->grab_widget != NULL;
|
|
}
|
|
|
|
void
|
|
pika_polygon_select_tool_halt (PikaPolygonSelectTool *poly_sel)
|
|
{
|
|
PikaPolygonSelectToolPrivate *priv;
|
|
|
|
g_return_if_fail (PIKA_IS_POLYGON_SELECT_TOOL (poly_sel));
|
|
|
|
priv = poly_sel->priv;
|
|
|
|
pika_draw_tool_set_widget (PIKA_DRAW_TOOL (poly_sel), NULL);
|
|
g_clear_object (&priv->widget);
|
|
}
|
