mirror of https://github.com/GNOME/gimp.git
308 lines
10 KiB
C
308 lines
10 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 "libgimpcolor/gimpcolor.h"
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#include "libgimpwidgets/gimpwidgets.h"
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#include "tools-types.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpimage.h"
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#include "core/gimpimage-mask-select.h"
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#include "core/gimpimage-projection.h"
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#include "core/gimptoolinfo.h"
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#include "display/gimpdisplay.h"
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#include "gimpbycolorselecttool.h"
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#include "selection_options.h"
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#include "libgimp/gimpintl.h"
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static void gimp_by_color_select_tool_class_init (GimpByColorSelectToolClass *klass);
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static void gimp_by_color_select_tool_init (GimpByColorSelectTool *by_color_select);
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static void gimp_by_color_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_by_color_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_by_color_select_tool_oper_update (GimpTool *tool,
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GimpCoords *coords,
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GdkModifierType state,
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GimpDisplay *gdisp);
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static void gimp_by_color_select_tool_cursor_update (GimpTool *tool,
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GimpCoords *coords,
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GdkModifierType state,
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GimpDisplay *gdisp);
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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_by_color_select_tool_register (GimpToolRegisterCallback callback,
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gpointer data)
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{
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(* callback) (GIMP_TYPE_BY_COLOR_SELECT_TOOL,
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selection_options_new,
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FALSE,
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"gimp-by-color-select-tool",
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_("Select By Color"),
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_("Select regions by color"),
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_("/Tools/Selection Tools/By Color Select"), "C",
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NULL, "tools/by_color_select.html",
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GIMP_STOCK_TOOL_BY_COLOR_SELECT,
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data);
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}
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GType
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gimp_by_color_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 (GimpByColorSelectToolClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gimp_by_color_select_tool_class_init,
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NULL, /* class_finalize */
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NULL, /* class_data */
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sizeof (GimpByColorSelectTool),
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0, /* n_preallocs */
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(GInstanceInitFunc) gimp_by_color_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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"GimpByColorSelectTool",
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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_by_color_select_tool_class_init (GimpByColorSelectToolClass *klass)
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{
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GimpToolClass *tool_class;
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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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tool_class->button_press = gimp_by_color_select_tool_button_press;
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tool_class->button_release = gimp_by_color_select_tool_button_release;
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tool_class->oper_update = gimp_by_color_select_tool_oper_update;
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tool_class->cursor_update = gimp_by_color_select_tool_cursor_update;
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}
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static void
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gimp_by_color_select_tool_init (GimpByColorSelectTool *by_color_select)
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{
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GimpTool *tool;
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tool = GIMP_TOOL (by_color_select);
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gimp_tool_control_set_preserve (tool->control, FALSE);
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gimp_tool_control_set_preserve (tool->control, GIMP_RECT_SELECT_TOOL_CURSOR);
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by_color_select->x = 0;
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by_color_select->y = 0;
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}
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static void
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gimp_by_color_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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GimpByColorSelectTool *by_color_sel;
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SelectionOptions *sel_options;
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by_color_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
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sel_options = (SelectionOptions *) tool->tool_info->tool_options;
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tool->drawable = gimp_image_active_drawable (gdisp->gimage);
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gimp_tool_control_activate (tool->control);
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tool->gdisp = gdisp;
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by_color_sel->x = coords->x;
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by_color_sel->y = coords->y;
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if (! sel_options->sample_merged)
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{
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gint off_x, off_y;
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gimp_drawable_offsets (gimp_image_active_drawable (gdisp->gimage),
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&off_x, &off_y);
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by_color_sel->x -= off_x;
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by_color_sel->y -= off_y;
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}
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}
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static void
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gimp_by_color_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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GimpByColorSelectTool *by_color_sel;
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GimpSelectionTool *sel_tool;
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SelectionOptions *sel_options;
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GimpDrawable *drawable;
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guchar *col;
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GimpRGB color;
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by_color_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
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sel_tool = GIMP_SELECTION_TOOL (tool);
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sel_options = (SelectionOptions *) tool->tool_info->tool_options;
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drawable = gimp_image_active_drawable (gdisp->gimage);
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gimp_tool_control_halt (tool->control); /* sets paused_count to 0 -- is this ok? */
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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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{
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if (by_color_sel->x >= 0 &&
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by_color_sel->y >= 0 &&
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by_color_sel->x < gimp_drawable_width (drawable) &&
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by_color_sel->y < gimp_drawable_height (drawable))
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{
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/* Get the start color */
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if (sel_options->sample_merged)
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{
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if (!(col = gimp_image_projection_get_color_at (gdisp->gimage,
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by_color_sel->x,
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by_color_sel->y)))
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return;
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}
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else
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{
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if (!(col = gimp_drawable_get_color_at (drawable,
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by_color_sel->x,
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by_color_sel->y)))
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return;
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}
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gimp_rgba_set_uchar (&color, col[0], col[1], col[2], col[3]);
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g_free (col);
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gimp_image_mask_select_by_color (gdisp->gimage, drawable,
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sel_options->sample_merged,
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&color,
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sel_options->threshold,
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sel_options->select_transparent,
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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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sel_options->feather_radius);
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gimp_image_flush (gdisp->gimage);
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}
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}
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}
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static void
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gimp_by_color_select_tool_oper_update (GimpTool *tool,
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GimpCoords *coords,
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GdkModifierType state,
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GimpDisplay *gdisp)
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{
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GimpSelectionTool *sel_tool;
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SelectionOptions *sel_options;
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if (gimp_tool_control_is_active (tool->control))
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return;
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sel_tool = GIMP_SELECTION_TOOL (tool);
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sel_options = (SelectionOptions *) tool->tool_info->tool_options;
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if ((state & GDK_CONTROL_MASK) && (state & GDK_SHIFT_MASK))
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{
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sel_tool->op = SELECTION_INTERSECT; /* intersect with selection */
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}
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else if (state & GDK_SHIFT_MASK)
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{
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sel_tool->op = SELECTION_ADD; /* add to the selection */
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}
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else if (state & GDK_CONTROL_MASK)
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{
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sel_tool->op = SELECTION_SUBTRACT; /* subtract from the selection */
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}
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else
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{
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sel_tool->op = sel_options->op;
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}
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}
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static void
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gimp_by_color_select_tool_cursor_update (GimpTool *tool,
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GimpCoords *coords,
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GdkModifierType state,
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GimpDisplay *gdisp)
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{
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GimpByColorSelectTool *by_col_sel;
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SelectionOptions *sel_options;
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GimpLayer *layer;
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by_col_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
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sel_options = (SelectionOptions *) tool->tool_info->tool_options;
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layer = gimp_image_pick_correlate_layer (gdisp->gimage, coords->x, coords->y);
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if (! sel_options->sample_merged &&
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layer && layer != gdisp->gimage->active_layer)
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{
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gimp_tool_control_set_cursor (tool->control, GIMP_BAD_CURSOR);
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}
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else
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{
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gimp_tool_control_set_cursor (tool->control, GIMP_MOUSE_CURSOR);
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}
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GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
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}
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