mirror of https://github.com/GNOME/gimp.git
905 lines
26 KiB
C
905 lines
26 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
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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 "libgimpmath/gimpmath.h"
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#include "tools-types.h"
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#include "display/gimpdisplay.h"
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#include "display/gimpdisplayshell.h"
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#include "gimpdrawtool.h"
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static void gimp_draw_tool_class_init (GimpDrawToolClass *klass);
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static void gimp_draw_tool_init (GimpDrawTool *draw_tool);
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static void gimp_draw_tool_finalize (GObject *object);
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static void gimp_draw_tool_control (GimpTool *tool,
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GimpToolAction action,
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GimpDisplay *gdisp);
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static void gimp_draw_tool_draw (GimpDrawTool *draw_tool);
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static inline void gimp_draw_tool_shift_to_north_west
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(gdouble x,
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gdouble y,
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gint handle_width,
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gint handle_height,
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GtkAnchorType anchor,
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gdouble *shifted_x,
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gdouble *shifted_y);
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static inline void gimp_draw_tool_shift_to_center
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(gdouble x,
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gdouble y,
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gint handle_width,
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gint handle_height,
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GtkAnchorType anchor,
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gdouble *shifted_x,
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gdouble *shifted_y);
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static GimpToolClass *parent_class = NULL;
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GType
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gimp_draw_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 (GimpDrawToolClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_draw_tool_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpDrawTool),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_draw_tool_init,
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};
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tool_type = g_type_register_static (GIMP_TYPE_TOOL,
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"GimpDrawTool",
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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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static void
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gimp_draw_tool_class_init (GimpDrawToolClass *klass)
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{
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GObjectClass *object_class;
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GimpToolClass *tool_class;
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object_class = G_OBJECT_CLASS (klass);
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tool_class = GIMP_TOOL_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->finalize = gimp_draw_tool_finalize;
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tool_class->control = gimp_draw_tool_control;
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klass->draw = NULL;
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}
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static void
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gimp_draw_tool_init (GimpDrawTool *draw_tool)
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{
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draw_tool->gdisp = NULL;
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draw_tool->win = NULL;
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draw_tool->gc = NULL;
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draw_tool->draw_state = GIMP_DRAW_TOOL_STATE_INVISIBLE;
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draw_tool->paused_count = 0;
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draw_tool->line_width = 0;
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draw_tool->line_style = GDK_LINE_SOLID;
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draw_tool->cap_style = GDK_CAP_NOT_LAST;
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draw_tool->join_style = GDK_JOIN_MITER;
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}
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static void
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gimp_draw_tool_finalize (GObject *object)
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{
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GimpDrawTool *draw_tool;
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draw_tool = GIMP_DRAW_TOOL (object);
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if (draw_tool->gc)
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{
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g_object_unref (G_OBJECT (draw_tool->gc));
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draw_tool->gc = 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_draw_tool_control (GimpTool *tool,
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GimpToolAction action,
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GimpDisplay *gdisp)
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{
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GimpDrawTool *draw_tool;
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draw_tool = GIMP_DRAW_TOOL (tool);
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switch (action)
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{
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case PAUSE:
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gimp_draw_tool_pause (draw_tool);
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break;
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case RESUME:
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gimp_draw_tool_resume (draw_tool);
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break;
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case HALT:
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gimp_draw_tool_stop (draw_tool);
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break;
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default:
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break;
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}
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GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
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}
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static void
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gimp_draw_tool_draw (GimpDrawTool *draw_tool)
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{
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if (draw_tool->gdisp)
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{
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GIMP_DRAW_TOOL_GET_CLASS (draw_tool)->draw (draw_tool);
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}
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}
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void
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gimp_draw_tool_start (GimpDrawTool *draw_tool,
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GimpDisplay *gdisp)
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{
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GimpDisplayShell *shell;
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GdkColor fg, bg;
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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g_return_if_fail (GIMP_IS_DISPLAY (gdisp));
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shell = GIMP_DISPLAY_SHELL (gdisp->shell);
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gimp_draw_tool_stop (draw_tool);
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draw_tool->gdisp = gdisp;
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draw_tool->win = shell->canvas->window;
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draw_tool->gc = gdk_gc_new (draw_tool->win);
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gdk_gc_set_function (draw_tool->gc, GDK_INVERT);
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fg.pixel = 0xFFFFFFFF;
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bg.pixel = 0x00000000;
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gdk_gc_set_foreground (draw_tool->gc, &fg);
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gdk_gc_set_background (draw_tool->gc, &bg);
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gdk_gc_set_line_attributes (draw_tool->gc,
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draw_tool->line_width,
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draw_tool->line_style,
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draw_tool->cap_style,
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draw_tool->join_style);
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gimp_draw_tool_draw (draw_tool);
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draw_tool->draw_state = GIMP_DRAW_TOOL_STATE_VISIBLE;
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}
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void
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gimp_draw_tool_stop (GimpDrawTool *draw_tool)
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{
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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if (draw_tool->draw_state == GIMP_DRAW_TOOL_STATE_VISIBLE)
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{
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gimp_draw_tool_draw (draw_tool);
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}
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draw_tool->draw_state = GIMP_DRAW_TOOL_STATE_INVISIBLE;
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draw_tool->paused_count = 0;
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draw_tool->gdisp = NULL;
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draw_tool->win = NULL;
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if (draw_tool->gc)
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{
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g_object_unref (G_OBJECT (draw_tool->gc));
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draw_tool->gc = NULL;
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}
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}
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void
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gimp_draw_tool_pause (GimpDrawTool *draw_tool)
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{
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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if (draw_tool->paused_count == 0)
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{
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draw_tool->draw_state = GIMP_DRAW_TOOL_STATE_INVISIBLE;
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gimp_draw_tool_draw (draw_tool);
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}
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draw_tool->paused_count++;
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}
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void
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gimp_draw_tool_resume (GimpDrawTool *draw_tool)
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{
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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if (draw_tool->paused_count > 0)
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{
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draw_tool->paused_count--;
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if (draw_tool->paused_count == 0)
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{
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draw_tool->draw_state = GIMP_DRAW_TOOL_STATE_VISIBLE;
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gimp_draw_tool_draw (draw_tool);
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}
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}
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else
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{
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g_warning ("gimp_draw_tool_resume(): "
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"called with draw_tool->paused_count == 0");
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}
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}
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gdouble
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gimp_draw_tool_calc_distance (GimpDrawTool *draw_tool,
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GimpDisplay *gdisp,
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gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2)
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{
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GimpDisplayShell *shell;
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gdouble tx1, ty1;
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gdouble tx2, ty2;
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g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), 0.0);
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g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), 0.0);
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shell = GIMP_DISPLAY_SHELL (gdisp->shell);
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gimp_display_shell_transform_xy_f (shell, x1, y1, &tx1, &ty1, FALSE);
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gimp_display_shell_transform_xy_f (shell, x2, y2, &tx2, &ty2, FALSE);
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return sqrt (SQR (tx2 - tx1) + SQR (ty2 - ty1));
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}
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gboolean
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gimp_draw_tool_in_radius (GimpDrawTool *draw_tool,
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GimpDisplay *gdisp,
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gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2,
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gint radius)
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{
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GimpDisplayShell *shell;
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gdouble tx1, ty1;
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gdouble tx2, ty2;
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g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE);
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g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), FALSE);
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shell = GIMP_DISPLAY_SHELL (gdisp->shell);
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gimp_display_shell_transform_xy_f (shell, x1, y1, &tx1, &ty1, FALSE);
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gimp_display_shell_transform_xy_f (shell, x2, y2, &tx2, &ty2, FALSE);
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return (SQR (tx2 - tx1) + SQR (ty2 - ty1)) < SQR (radius);
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}
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void
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gimp_draw_tool_draw_line (GimpDrawTool *draw_tool,
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gdouble x1,
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gdouble y1,
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gdouble x2,
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gdouble y2,
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gboolean use_offsets)
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{
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GimpDisplayShell *shell;
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gdouble tx1, ty1;
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gdouble tx2, ty2;
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
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gimp_display_shell_transform_xy_f (shell,
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x1, y1,
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&tx1, &ty1,
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use_offsets);
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gimp_display_shell_transform_xy_f (shell,
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x2, y2,
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&tx2, &ty2,
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use_offsets);
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gdk_draw_line (draw_tool->win,
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draw_tool->gc,
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RINT (tx1), RINT (ty1),
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RINT (tx2), RINT (ty2));
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}
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void
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gimp_draw_tool_draw_rectangle (GimpDrawTool *draw_tool,
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gboolean filled,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height,
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gboolean use_offsets)
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{
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GimpDisplayShell *shell;
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gdouble tx1, ty1;
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gdouble tx2, ty2;
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
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tx1 = MIN (x, x + width);
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ty1 = MIN (y, y + height);
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tx2 = MAX (x, x + width);
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ty2 = MAX (y, y + height);
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gimp_display_shell_transform_xy_f (shell,
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tx1, ty1,
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&tx1, &ty1,
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use_offsets);
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gimp_display_shell_transform_xy_f (shell,
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tx2, ty2,
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&tx2, &ty2,
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use_offsets);
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gdk_draw_rectangle (draw_tool->win,
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draw_tool->gc,
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filled,
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RINT (tx1), RINT (ty1),
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RINT (tx2 - tx1), RINT (ty2 - ty1));
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}
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void
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gimp_draw_tool_draw_arc (GimpDrawTool *draw_tool,
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gboolean filled,
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gdouble x,
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gdouble y,
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gdouble width,
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gdouble height,
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gint angle1,
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gint angle2,
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gboolean use_offsets)
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{
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GimpDisplayShell *shell;
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gdouble tx1, ty1;
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gdouble tx2, ty2;
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
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tx1 = MIN (x, x + width);
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ty1 = MIN (y, y + height);
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tx2 = MAX (x, x + width);
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ty2 = MAX (y, y + height);
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gimp_display_shell_transform_xy_f (shell,
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tx1, ty1,
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&tx1, &ty1,
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use_offsets);
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gimp_display_shell_transform_xy_f (shell,
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tx2, ty2,
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&tx2, &ty2,
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use_offsets);
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gdk_draw_arc (draw_tool->win,
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draw_tool->gc,
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filled,
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RINT (tx1), RINT (ty1),
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RINT (tx2 - tx1), RINT (ty2 - ty1),
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angle1, angle2);
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}
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void
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gimp_draw_tool_draw_rectangle_by_anchor (GimpDrawTool *draw_tool,
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gboolean filled,
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gdouble x,
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gdouble y,
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gint width,
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gint height,
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GtkAnchorType anchor,
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gboolean use_offsets)
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{
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GimpDisplayShell *shell;
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gdouble tx, ty;
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
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gimp_display_shell_transform_xy_f (shell,
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x, y,
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&tx, &ty,
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use_offsets);
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gimp_draw_tool_shift_to_north_west (tx, ty,
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width, height,
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anchor,
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&tx, &ty);
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if (filled)
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{
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width++;
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height++;
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}
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gdk_draw_rectangle (draw_tool->win,
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draw_tool->gc,
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filled,
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RINT (tx), RINT (ty),
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width, height);
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}
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void
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gimp_draw_tool_draw_arc_by_anchor (GimpDrawTool *draw_tool,
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gboolean filled,
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gdouble x,
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gdouble y,
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gint radius_x,
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gint radius_y,
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gint angle1,
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gint angle2,
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GtkAnchorType anchor,
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gboolean use_offsets)
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{
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GimpDisplayShell *shell;
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gdouble tx, ty;
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
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gimp_display_shell_transform_xy_f (shell,
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x, y,
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&tx, &ty,
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use_offsets);
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/* well... */
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radius_x *= 2;
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radius_y *= 2;
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gimp_draw_tool_shift_to_north_west (tx, ty,
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radius_x, radius_y,
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anchor,
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&tx, &ty);
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if (filled)
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{
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radius_x += 1;
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radius_y += 1;
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}
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gdk_draw_arc (draw_tool->win,
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draw_tool->gc,
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filled,
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RINT (tx), RINT (ty),
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radius_x, radius_y,
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angle1, angle2);
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}
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void
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gimp_draw_tool_draw_cross_by_anchor (GimpDrawTool *draw_tool,
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gdouble x,
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gdouble y,
|
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gint width,
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gint height,
|
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GtkAnchorType anchor,
|
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gboolean use_offsets)
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{
|
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GimpDisplayShell *shell;
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gdouble tx, ty;
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g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
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shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
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gimp_display_shell_transform_xy_f (shell,
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x, y,
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&tx, &ty,
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use_offsets);
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gimp_draw_tool_shift_to_center (tx, ty,
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width, height,
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anchor,
|
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&tx, &ty);
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gdk_draw_line (draw_tool->win,
|
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draw_tool->gc,
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RINT (tx), RINT (ty) - (height >> 1),
|
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RINT (tx), RINT (ty) + (height >> 1));
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|
gdk_draw_line (draw_tool->win,
|
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draw_tool->gc,
|
|
RINT (tx) - (width >> 1), RINT (ty),
|
|
RINT (tx) + (width >> 1), RINT (ty));
|
|
}
|
|
|
|
void
|
|
gimp_draw_tool_draw_handle (GimpDrawTool *draw_tool,
|
|
GimpHandleType type,
|
|
gdouble x,
|
|
gdouble y,
|
|
gint width,
|
|
gint height,
|
|
GtkAnchorType anchor,
|
|
gboolean use_offsets)
|
|
{
|
|
g_return_if_fail (GIMP_IS_DRAW_TOOL (draw_tool));
|
|
|
|
switch (type)
|
|
{
|
|
case GIMP_HANDLE_SQUARE:
|
|
gimp_draw_tool_draw_rectangle_by_anchor (draw_tool,
|
|
FALSE,
|
|
x, y,
|
|
width,
|
|
height,
|
|
anchor,
|
|
use_offsets);
|
|
break;
|
|
|
|
case GIMP_HANDLE_FILLED_SQUARE:
|
|
gimp_draw_tool_draw_rectangle_by_anchor (draw_tool,
|
|
TRUE,
|
|
x, y,
|
|
width,
|
|
height,
|
|
anchor,
|
|
use_offsets);
|
|
break;
|
|
|
|
case GIMP_HANDLE_CIRCLE:
|
|
gimp_draw_tool_draw_arc_by_anchor (draw_tool,
|
|
FALSE,
|
|
x, y,
|
|
width >> 1,
|
|
height >> 1,
|
|
0, 360 * 64,
|
|
anchor,
|
|
use_offsets);
|
|
break;
|
|
|
|
case GIMP_HANDLE_FILLED_CIRCLE:
|
|
gimp_draw_tool_draw_arc_by_anchor (draw_tool,
|
|
TRUE,
|
|
x, y,
|
|
width >> 1,
|
|
height >> 1,
|
|
0, 360 * 64,
|
|
anchor,
|
|
use_offsets);
|
|
break;
|
|
|
|
case GIMP_HANDLE_CROSS:
|
|
gimp_draw_tool_draw_cross_by_anchor (draw_tool,
|
|
x, y,
|
|
width,
|
|
height,
|
|
anchor,
|
|
use_offsets);
|
|
break;
|
|
|
|
default:
|
|
g_warning ("%s: invalid handle type %d", G_GNUC_PRETTY_FUNCTION, type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gimp_draw_tool_on_handle (GimpDrawTool *draw_tool,
|
|
GimpDisplay *gdisp,
|
|
gdouble x,
|
|
gdouble y,
|
|
GimpHandleType type,
|
|
gdouble handle_x,
|
|
gdouble handle_y,
|
|
gint width,
|
|
gint height,
|
|
GtkAnchorType anchor,
|
|
gboolean use_offsets)
|
|
{
|
|
GimpDisplayShell *shell;
|
|
gdouble tx, ty;
|
|
gdouble handle_tx, handle_ty;
|
|
|
|
g_return_val_if_fail (GIMP_IS_DRAW_TOOL (draw_tool), FALSE);
|
|
g_return_val_if_fail (GIMP_IS_DISPLAY (gdisp), FALSE);
|
|
|
|
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
|
|
|
|
gimp_display_shell_transform_xy_f (shell,
|
|
x, y,
|
|
&tx, &ty,
|
|
use_offsets);
|
|
gimp_display_shell_transform_xy_f (shell,
|
|
handle_x, handle_y,
|
|
&handle_tx, &handle_ty,
|
|
use_offsets);
|
|
|
|
switch (type)
|
|
{
|
|
case GIMP_HANDLE_SQUARE:
|
|
case GIMP_HANDLE_FILLED_SQUARE:
|
|
case GIMP_HANDLE_CROSS:
|
|
gimp_draw_tool_shift_to_north_west (handle_tx, handle_ty,
|
|
width, height,
|
|
anchor,
|
|
&handle_tx, &handle_ty);
|
|
|
|
return (tx == CLAMP (tx, handle_tx, handle_tx + width) &&
|
|
ty == CLAMP (ty, handle_ty, handle_ty + height));
|
|
|
|
case GIMP_HANDLE_CIRCLE:
|
|
case GIMP_HANDLE_FILLED_CIRCLE:
|
|
gimp_draw_tool_shift_to_center (handle_tx, handle_ty,
|
|
width, height,
|
|
anchor,
|
|
&handle_tx, &handle_ty);
|
|
|
|
/* FIXME */
|
|
if (width != height)
|
|
width = (width + height) / 2;
|
|
|
|
width /= 2;
|
|
|
|
return ((SQR (handle_tx - tx) + SQR (handle_ty - ty)) < SQR (width));
|
|
|
|
default:
|
|
g_warning ("%s: invalid handle type %d", G_GNUC_PRETTY_FUNCTION, type);
|
|
break;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
gimp_draw_tool_draw_lines (GimpDrawTool *draw_tool,
|
|
gdouble *points,
|
|
gint n_points,
|
|
gboolean filled,
|
|
gboolean use_offsets)
|
|
{
|
|
GimpDisplayShell *shell;
|
|
GdkPoint *coords;
|
|
gint i;
|
|
gdouble sx, sy;
|
|
|
|
shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
|
|
|
|
coords = g_new (GdkPoint, n_points);
|
|
|
|
for (i = 0; i < n_points ; i++)
|
|
{
|
|
gimp_display_shell_transform_xy_f (shell,
|
|
points[i*2], points[i*2+1],
|
|
&sx, &sy,
|
|
use_offsets);
|
|
coords[i].x = ROUND (sx);
|
|
coords[i].y = ROUND (sy);
|
|
}
|
|
|
|
if (filled)
|
|
{
|
|
gdk_draw_polygon (draw_tool->win,
|
|
draw_tool->gc, TRUE,
|
|
coords, n_points);
|
|
}
|
|
else
|
|
{
|
|
gdk_draw_lines (draw_tool->win,
|
|
draw_tool->gc,
|
|
coords, n_points);
|
|
}
|
|
|
|
g_free (coords);
|
|
}
|
|
|
|
void
|
|
gimp_draw_tool_draw_strokes (GimpDrawTool *draw_tool,
|
|
GimpCoords *points,
|
|
gint n_points,
|
|
gboolean filled,
|
|
gboolean use_offsets)
|
|
{
|
|
GimpDisplayShell *shell;
|
|
GdkPoint *coords;
|
|
gint i;
|
|
gdouble sx, sy;
|
|
|
|
shell = GIMP_DISPLAY_SHELL (draw_tool->gdisp->shell);
|
|
|
|
coords = g_new (GdkPoint, n_points);
|
|
|
|
for (i = 0; i < n_points ; i++)
|
|
{
|
|
gimp_display_shell_transform_xy_f (shell,
|
|
points[i].x, points[i].y,
|
|
&sx, &sy,
|
|
use_offsets);
|
|
coords[i].x = ROUND (sx);
|
|
coords[i].y = ROUND (sy);
|
|
}
|
|
|
|
if (filled)
|
|
{
|
|
gdk_draw_polygon (draw_tool->win,
|
|
draw_tool->gc, TRUE,
|
|
coords, n_points);
|
|
}
|
|
else
|
|
{
|
|
gdk_draw_lines (draw_tool->win,
|
|
draw_tool->gc,
|
|
coords, n_points);
|
|
}
|
|
|
|
g_free (coords);
|
|
}
|
|
|
|
|
|
/* private functions */
|
|
|
|
static inline void
|
|
gimp_draw_tool_shift_to_north_west (gdouble x,
|
|
gdouble y,
|
|
gint handle_width,
|
|
gint handle_height,
|
|
GtkAnchorType anchor,
|
|
gdouble *shifted_x,
|
|
gdouble *shifted_y)
|
|
{
|
|
switch (anchor)
|
|
{
|
|
case GTK_ANCHOR_CENTER:
|
|
x -= (handle_width >> 1);
|
|
y -= (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_NORTH:
|
|
x -= (handle_width >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_NORTH_WEST:
|
|
/* nothing, this is the default */
|
|
break;
|
|
|
|
case GTK_ANCHOR_NORTH_EAST:
|
|
x -= handle_width;
|
|
break;
|
|
|
|
case GTK_ANCHOR_SOUTH:
|
|
x -= (handle_width >> 1);
|
|
y -= handle_height;
|
|
break;
|
|
|
|
case GTK_ANCHOR_SOUTH_WEST:
|
|
y -= handle_height;
|
|
break;
|
|
|
|
case GTK_ANCHOR_SOUTH_EAST:
|
|
x -= handle_width;
|
|
y -= handle_height;
|
|
break;
|
|
|
|
case GTK_ANCHOR_WEST:
|
|
y -= (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_EAST:
|
|
x -= handle_width;
|
|
y -= (handle_height >> 1);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (shifted_x)
|
|
*shifted_x = x;
|
|
|
|
if (shifted_y)
|
|
*shifted_y = y;
|
|
}
|
|
|
|
static inline void
|
|
gimp_draw_tool_shift_to_center (gdouble x,
|
|
gdouble y,
|
|
gint handle_width,
|
|
gint handle_height,
|
|
GtkAnchorType anchor,
|
|
gdouble *shifted_x,
|
|
gdouble *shifted_y)
|
|
{
|
|
switch (anchor)
|
|
{
|
|
case GTK_ANCHOR_CENTER:
|
|
/* nothing, this is the default */
|
|
break;
|
|
|
|
case GTK_ANCHOR_NORTH:
|
|
y += (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_NORTH_WEST:
|
|
x += (handle_width >> 1);
|
|
y += (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_NORTH_EAST:
|
|
x -= (handle_width >> 1);
|
|
y += (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_SOUTH:
|
|
y -= (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_SOUTH_WEST:
|
|
x += (handle_width >> 1);
|
|
y -= (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_SOUTH_EAST:
|
|
x -= (handle_width >> 1);
|
|
y -= (handle_height >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_WEST:
|
|
x += (handle_width >> 1);
|
|
break;
|
|
|
|
case GTK_ANCHOR_EAST:
|
|
x -= (handle_width >> 1);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (shifted_x)
|
|
*shifted_x = x;
|
|
|
|
if (shifted_y)
|
|
*shifted_y = y;
|
|
}
|