mirror of https://github.com/GNOME/gimp.git
260 lines
9.2 KiB
C
260 lines
9.2 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/gimpchannel-select.h"
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#include "core/gimpdrawable.h"
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#include "core/gimpimage.h"
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#include "core/gimppickable.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 "gimpbycolorselecttool.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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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 *display);
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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 *display);
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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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gboolean proximity,
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GimpDisplay *display);
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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 *display);
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G_DEFINE_TYPE (GimpByColorSelectTool, gimp_by_color_select_tool,
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GIMP_TYPE_SELECTION_TOOL);
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#define parent_class gimp_by_color_select_tool_parent_class
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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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GIMP_TYPE_SELECTION_OPTIONS,
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gimp_selection_options_gui,
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0,
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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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N_("_By Color Select"), "<shift>O",
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NULL, GIMP_HELP_TOOL_BY_COLOR_SELECT,
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GIMP_STOCK_TOOL_BY_COLOR_SELECT,
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data);
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}
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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 = GIMP_TOOL_CLASS (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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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 *display)
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{
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GimpByColorSelectTool *by_color_sel = GIMP_BY_COLOR_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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tool->drawable = gimp_image_active_drawable (display->image);
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gimp_tool_control_activate (tool->control);
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tool->display = display;
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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 (! options->sample_merged)
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{
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gint off_x, off_y;
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gimp_item_offsets (GIMP_ITEM (gimp_image_active_drawable (display->image)),
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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 *display)
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{
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GimpByColorSelectTool *by_color_sel = GIMP_BY_COLOR_SELECT_TOOL (tool);
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GimpSelectionTool *sel_tool = GIMP_SELECTION_TOOL (tool);
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GimpSelectionOptions *options;
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GimpDrawable *drawable;
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options = GIMP_SELECTION_OPTIONS (tool->tool_info->tool_options);
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drawable = gimp_image_active_drawable (display->image);
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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 (by_color_sel->x >= 0 &&
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by_color_sel->y >= 0 &&
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by_color_sel->x < gimp_item_width (GIMP_ITEM (drawable)) &&
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by_color_sel->y < gimp_item_height (GIMP_ITEM (drawable)))
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{
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GimpPickable *pickable;
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guchar *col;
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if (options->sample_merged)
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pickable = GIMP_PICKABLE (display->image->projection);
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else
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pickable = GIMP_PICKABLE (drawable);
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gimp_pickable_flush (pickable);
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col = gimp_pickable_get_color_at (pickable,
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by_color_sel->x,
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by_color_sel->y);
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if (col)
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{
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GimpRGB color;
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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_channel_select_by_color (gimp_image_get_mask (display->image),
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drawable,
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options->sample_merged,
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&color,
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options->threshold,
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options->select_transparent,
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sel_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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gimp_image_flush (display->image);
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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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gboolean proximity,
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GimpDisplay *display)
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{
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GimpSelectionTool *sel_tool = GIMP_SELECTION_TOOL (tool);
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GimpSelectionOptions *options;
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if (gimp_tool_control_is_active (tool->control))
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return;
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options = GIMP_SELECTION_OPTIONS (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 = options->operation;
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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 *display)
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{
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GimpSelectionOptions *options;
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GimpLayer *layer;
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options = GIMP_SELECTION_OPTIONS (tool->tool_info->tool_options);
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layer = gimp_image_pick_correlate_layer (display->image, coords->x, coords->y);
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if (! options->sample_merged &&
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layer && layer != display->image->active_layer)
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{
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gimp_tool_control_set_cursor (tool->control, GIMP_CURSOR_BAD);
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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_CURSOR_MOUSE);
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}
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GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
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}
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