mirror of https://github.com/GNOME/gimp.git
356 lines
12 KiB
C
356 lines
12 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free 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 Free Software Foundation; either version 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "config.h"
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#include <gtk/gtk.h>
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#include "libgimpwidgets/gimpwidgets.h"
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#include "tools-types.h"
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#include "core/gimpchannel.h"
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#include "core/gimpchannel-select.h"
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#include "core/gimpimage.h"
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#include "core/gimplayer-floating-sel.h"
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#include "core/gimptoolinfo.h"
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#include "widgets/gimphelp-ids.h"
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#include "display/gimpdisplay.h"
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#include "gimpfreeselecttool.h"
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#include "gimpselectionoptions.h"
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#include "gimptoolcontrol.h"
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#include "gimp-intl.h"
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#define DEFAULT_MAX_INC 1024
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static void gimp_free_select_tool_class_init (GimpFreeSelectToolClass *klass);
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static void gimp_free_select_tool_init (GimpFreeSelectTool *free_select);
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static void gimp_free_select_tool_finalize (GObject *object);
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static void gimp_free_select_tool_button_press (GimpTool *tool,
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GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *gdisp);
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static void gimp_free_select_tool_button_release (GimpTool *tool,
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GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *gdisp);
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static void gimp_free_select_tool_motion (GimpTool *tool,
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GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *gdisp);
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static void gimp_free_select_tool_draw (GimpDrawTool *draw_tool);
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static void gimp_free_select_tool_select (GimpFreeSelectTool *free_sel,
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GimpImage *gimage);
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static void gimp_free_select_tool_add_point (GimpFreeSelectTool *free_sel,
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gdouble x,
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gdouble y);
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static void gimp_free_select_tool_move_points (GimpFreeSelectTool *free_sel,
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gdouble dx,
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gdouble dy);
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static GimpSelectionToolClass *parent_class = NULL;
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/* public functions */
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void
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gimp_free_select_tool_register (GimpToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (GIMP_TYPE_FREE_SELECT_TOOL,
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GIMP_TYPE_SELECTION_OPTIONS,
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gimp_selection_options_gui,
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0,
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"gimp-free-select-tool",
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_("Free Select"),
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_("Select hand-drawn regions"),
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N_("_Free Select"), "F",
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NULL, GIMP_HELP_TOOL_FREE_SELECT,
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GIMP_STOCK_TOOL_FREE_SELECT,
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data);
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}
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GType
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gimp_free_select_tool_get_type (void)
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{
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static GType tool_type = 0;
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if (! tool_type)
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{
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static const GTypeInfo tool_info =
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{
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sizeof (GimpFreeSelectToolClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_free_select_tool_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpFreeSelectTool),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_free_select_tool_init,
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};
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tool_type = g_type_register_static (GIMP_TYPE_SELECTION_TOOL,
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"GimpFreeSelectTool",
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&tool_info, 0);
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}
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return tool_type;
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}
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/* private functions */
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static void
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gimp_free_select_tool_class_init (GimpFreeSelectToolClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
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GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = gimp_free_select_tool_finalize;
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tool_class->button_press = gimp_free_select_tool_button_press;
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tool_class->button_release = gimp_free_select_tool_button_release;
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tool_class->motion = gimp_free_select_tool_motion;
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draw_tool_class->draw = gimp_free_select_tool_draw;
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klass->select = gimp_free_select_tool_select;
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}
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static void
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gimp_free_select_tool_init (GimpFreeSelectTool *free_select)
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{
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GimpTool *tool = GIMP_TOOL (free_select);
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gimp_tool_control_set_scroll_lock (tool->control, TRUE);
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gimp_tool_control_set_tool_cursor (tool->control,
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GIMP_TOOL_CURSOR_FREE_SELECT);
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free_select->points = NULL;
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free_select->num_points = 0;
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free_select->max_segs = 0;
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}
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static void
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gimp_free_select_tool_finalize (GObject *object)
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{
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GimpFreeSelectTool *free_sel = GIMP_FREE_SELECT_TOOL (object);
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if (free_sel->points)
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{
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g_free (free_sel->points);
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free_sel->points = NULL;
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}
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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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gimp_free_select_tool_button_press (GimpTool *tool,
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GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *gdisp)
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{
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GimpFreeSelectTool *free_sel = GIMP_FREE_SELECT_TOOL (tool);
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gimp_tool_control_activate (tool->control);
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tool->gdisp = gdisp;
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if (gimp_selection_tool_start_edit (GIMP_SELECTION_TOOL (free_sel), coords))
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return;
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free_sel->last_coords = *coords;
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free_sel->num_points = 0;
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gimp_free_select_tool_add_point (free_sel, coords->x, coords->y);
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gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), gdisp);
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}
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static void
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gimp_free_select_tool_button_release (GimpTool *tool,
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GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *gdisp)
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{
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GimpFreeSelectTool *free_sel = GIMP_FREE_SELECT_TOOL (tool);
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GimpSelectionOptions *options;
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options = GIMP_SELECTION_OPTIONS (tool->tool_info->tool_options);
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gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
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gimp_tool_control_halt (tool->control);
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/* First take care of the case where the user "cancels" the action */
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if (state & GDK_BUTTON3_MASK)
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return;
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if (free_sel->num_points == 1)
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{
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/* If there is a floating selection, anchor it */
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if (gimp_image_floating_sel (gdisp->gimage))
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{
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floating_sel_anchor (gimp_image_floating_sel (gdisp->gimage));
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}
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/* Otherwise, clear the selection mask */
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else
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{
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gimp_channel_clear (gimp_image_get_mask (gdisp->gimage), NULL, TRUE);
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}
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}
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else
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{
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GIMP_FREE_SELECT_TOOL_GET_CLASS (free_sel)->select (free_sel,
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gdisp->gimage);
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}
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gimp_image_flush (gdisp->gimage);
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}
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static void
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gimp_free_select_tool_motion (GimpTool *tool,
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GimpCoords *coords,
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guint32 time,
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GdkModifierType state,
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GimpDisplay *gdisp)
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{
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GimpFreeSelectTool *free_sel = GIMP_FREE_SELECT_TOOL (tool);
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GimpSelectionTool *sel_tool = GIMP_SELECTION_TOOL (tool);
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if (sel_tool->op == SELECTION_ANCHOR)
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{
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sel_tool->op = SELECTION_REPLACE;
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gimp_tool_cursor_update (tool, coords, state, gdisp);
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}
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if (state & GDK_MOD1_MASK)
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{
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gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
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gimp_free_select_tool_move_points (free_sel,
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coords->x - free_sel->last_coords.x,
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coords->y - free_sel->last_coords.y);
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gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
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}
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else
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{
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gimp_free_select_tool_add_point (free_sel, coords->x, coords->y);
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gimp_draw_tool_draw_line (GIMP_DRAW_TOOL (tool),
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free_sel->points[free_sel->num_points - 2].x,
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free_sel->points[free_sel->num_points - 2].y,
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free_sel->points[free_sel->num_points - 1].x,
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free_sel->points[free_sel->num_points - 1].y,
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FALSE);
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}
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free_sel->last_coords = *coords;
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}
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static void
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gimp_free_select_tool_draw (GimpDrawTool *draw_tool)
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{
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GimpFreeSelectTool *free_sel = GIMP_FREE_SELECT_TOOL (draw_tool);
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gint i;
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for (i = 1; i < free_sel->num_points; i++)
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{
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gimp_draw_tool_draw_line (draw_tool,
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free_sel->points[i - 1].x,
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free_sel->points[i - 1].y,
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free_sel->points[i].x,
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free_sel->points[i].y,
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FALSE);
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}
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}
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static void
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gimp_free_select_tool_select (GimpFreeSelectTool *free_sel,
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GimpImage *gimage)
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{
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GimpTool *tool = GIMP_TOOL (free_sel);
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GimpSelectionOptions *options;
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options = GIMP_SELECTION_OPTIONS (tool->tool_info->tool_options);
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gimp_channel_select_polygon (gimp_image_get_mask (gimage),
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tool->tool_info->blurb,
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free_sel->num_points,
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free_sel->points,
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GIMP_SELECTION_TOOL (tool)->op,
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options->antialias,
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options->feather,
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options->feather_radius,
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options->feather_radius);
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}
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static void
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gimp_free_select_tool_add_point (GimpFreeSelectTool *free_sel,
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gdouble x,
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gdouble y)
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{
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if (free_sel->num_points >= free_sel->max_segs)
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{
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free_sel->max_segs += DEFAULT_MAX_INC;
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free_sel->points = g_realloc (free_sel->points,
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sizeof (GimpVector2) * free_sel->max_segs);
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}
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free_sel->points[free_sel->num_points].x = x;
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free_sel->points[free_sel->num_points].y = y;
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free_sel->num_points++;
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}
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static void
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gimp_free_select_tool_move_points (GimpFreeSelectTool *free_sel,
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gdouble dx,
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gdouble dy)
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{
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gint i;
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for (i = 0; i < free_sel->num_points; i++)
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{
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free_sel->points[i].x += dx;
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free_sel->points[i].y += dy;
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}
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}
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