mirror of https://github.com/GNOME/gimp.git
247 lines
7.3 KiB
C
247 lines
7.3 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 <stdlib.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/gimpimage.h"
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#include "core/gimpimage-mask.h"
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#include "core/gimptoolinfo.h"
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#include "display/gimpdisplay.h"
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#include "gimpellipseselecttool.h"
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#include "selection_options.h"
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#include "tool_options.h"
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#include "tool_manager.h"
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#include "app_procs.h"
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#include "libgimp/gimpintl.h"
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static void gimp_ellipse_select_tool_class_init (GimpEllipseSelectToolClass *klass);
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static void gimp_ellipse_select_tool_init (GimpEllipseSelectTool *ellipse_select);
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static void gimp_ellipse_select_tool_draw (GimpDrawTool *draw_tool);
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static void gimp_ellipse_select_tool_rect_select (GimpRectSelectTool *rect_tool,
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gint x,
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gint y,
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gint w,
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gint h);
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static GimpRectSelectToolClass *parent_class = NULL;
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static SelectionOptions *ellipse_options = NULL;
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/* public functions */
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void
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gimp_ellipse_select_tool_register (Gimp *gimp)
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{
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tool_manager_register_tool (gimp,
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GIMP_TYPE_ELLIPSE_SELECT_TOOL,
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FALSE,
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"gimp:ellipse_select_tool",
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_("Ellipse Select"),
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_("Select elliptical regions"),
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_("/Tools/Selection Tools/Ellipse Select"), "E",
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NULL, "tools/ellipse_select.html",
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GIMP_STOCK_TOOL_ELLIPSE_SELECT);
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}
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GType
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gimp_ellipse_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 (GimpEllipseSelectToolClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_ellipse_select_tool_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpEllipseSelectTool),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_ellipse_select_tool_init,
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};
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tool_type = g_type_register_static (GIMP_TYPE_RECT_SELECT_TOOL,
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"GimpEllipseSelectTool",
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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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void
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ellipse_select (GimpImage *gimage,
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gint x,
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gint y,
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gint w,
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gint h,
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SelectOps op,
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gboolean antialias,
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gboolean feather,
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gdouble feather_radius)
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{
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GimpChannel *new_mask;
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/* if applicable, replace the current selection */
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if (op == SELECTION_REPLACE)
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gimage_mask_clear (gimage);
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else
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gimage_mask_undo (gimage);
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/* if feathering for rect, make a new mask with the
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* rectangle and feather that with the old mask
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*/
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if (feather)
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{
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new_mask = gimp_channel_new_mask (gimage, gimage->width, gimage->height);
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gimp_channel_combine_ellipse (new_mask, CHANNEL_OP_ADD,
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x, y, w, h, antialias);
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gimp_channel_feather (new_mask, gimp_image_get_mask (gimage),
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feather_radius,
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feather_radius,
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op, 0, 0);
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g_object_unref (G_OBJECT (new_mask));
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}
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else if (op == SELECTION_INTERSECT)
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{
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new_mask = gimp_channel_new_mask (gimage, gimage->width, gimage->height);
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gimp_channel_combine_ellipse (new_mask, CHANNEL_OP_ADD,
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x, y, w, h, antialias);
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gimp_channel_combine_mask (gimp_image_get_mask (gimage), new_mask,
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op, 0, 0);
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g_object_unref (G_OBJECT (new_mask));
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}
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else
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{
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gimp_channel_combine_ellipse (gimp_image_get_mask (gimage), op,
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x, y, w, h, antialias);
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}
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}
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/* private functions */
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static void
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gimp_ellipse_select_tool_class_init (GimpEllipseSelectToolClass *klass)
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{
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GimpDrawToolClass *draw_tool_class;
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GimpRectSelectToolClass *rect_tool_class;
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draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
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rect_tool_class = GIMP_RECT_SELECT_TOOL_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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draw_tool_class->draw = gimp_ellipse_select_tool_draw;
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rect_tool_class->rect_select = gimp_ellipse_select_tool_rect_select;
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}
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static void
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gimp_ellipse_select_tool_init (GimpEllipseSelectTool *ellipse_select)
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{
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GimpTool *tool;
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GimpSelectionTool *select_tool;
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tool = GIMP_TOOL (ellipse_select);
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select_tool = GIMP_SELECTION_TOOL (ellipse_select);
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if (! ellipse_options)
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{
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ellipse_options = selection_options_new (GIMP_TYPE_ELLIPSE_SELECT_TOOL,
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selection_options_reset);
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tool_manager_register_tool_options (GIMP_TYPE_ELLIPSE_SELECT_TOOL,
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(GimpToolOptions *) ellipse_options);
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}
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tool->tool_cursor = GIMP_ELLIPSE_SELECT_TOOL_CURSOR;
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tool->preserve = FALSE; /* Don't preserve on drawable change */
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}
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static void
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gimp_ellipse_select_tool_draw (GimpDrawTool *draw_tool)
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{
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GimpTool *tool;
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GimpRectSelectTool *rect_sel;
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gint x1, y1;
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gint x2, y2;
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tool = GIMP_TOOL (draw_tool);
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rect_sel = GIMP_RECT_SELECT_TOOL (draw_tool);
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x1 = MIN (rect_sel->x, rect_sel->x + rect_sel->w);
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y1 = MIN (rect_sel->y, rect_sel->y + rect_sel->h);
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x2 = MAX (rect_sel->x, rect_sel->x + rect_sel->w);
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y2 = MAX (rect_sel->y, rect_sel->y + rect_sel->h);
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gdisplay_transform_coords (tool->gdisp, x1, y1, &x1, &y1, 0);
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gdisplay_transform_coords (tool->gdisp, x2, y2, &x2, &y2, 0);
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gdk_draw_arc (draw_tool->win,
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draw_tool->gc,
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0,
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x1, y1, (x2 - x1), (y2 - y1),
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0, 23040);
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}
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static void
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gimp_ellipse_select_tool_rect_select (GimpRectSelectTool *rect_tool,
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gint x,
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gint y,
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gint w,
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gint h)
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{
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GimpTool *tool;
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GimpSelectionTool *sel_tool;
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SelectionOptions *sel_options;
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tool = GIMP_TOOL (rect_tool);
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sel_tool = GIMP_SELECTION_TOOL (rect_tool);
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sel_options = (SelectionOptions *)
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tool_manager_get_info_by_tool (the_gimp, tool)->tool_options;
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ellipse_select (tool->gdisp->gimage,
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x, y, w, h,
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sel_tool->op,
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sel_options->antialias,
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sel_options->feather,
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sel_options->feather_radius);
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}
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