mirror of https://github.com/GNOME/gimp.git
430 lines
14 KiB
C
430 lines
14 KiB
C
/* GIMP - The GNU 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 3 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, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include <gegl.h>
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#include <gtk/gtk.h>
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#include <gdk/gdkkeysyms.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/gimppickable.h"
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#include "display/gimpdisplay.h"
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#include "widgets/gimpwidgets-utils.h"
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#include "gimpeditselectiontool.h"
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#include "gimpselectiontool.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_selection_tool_modifier_key (GimpTool *tool,
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GdkModifierType key,
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gboolean press,
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GdkModifierType state,
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GimpDisplay *display);
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static void gimp_selection_tool_oper_update (GimpTool *tool,
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const 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_selection_tool_cursor_update (GimpTool *tool,
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const GimpCoords *coords,
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GdkModifierType state,
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GimpDisplay *display);
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G_DEFINE_TYPE (GimpSelectionTool, gimp_selection_tool, GIMP_TYPE_DRAW_TOOL)
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#define parent_class gimp_selection_tool_parent_class
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static void
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gimp_selection_tool_class_init (GimpSelectionToolClass *klass)
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{
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GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
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tool_class->modifier_key = gimp_selection_tool_modifier_key;
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tool_class->key_press = gimp_edit_selection_tool_key_press;
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tool_class->oper_update = gimp_selection_tool_oper_update;
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tool_class->cursor_update = gimp_selection_tool_cursor_update;
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}
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static void
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gimp_selection_tool_init (GimpSelectionTool *selection_tool)
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{
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selection_tool->function = SELECTION_SELECT;
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selection_tool->saved_operation = GIMP_CHANNEL_OP_REPLACE;
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selection_tool->allow_move = TRUE;
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}
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static void
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gimp_selection_tool_modifier_key (GimpTool *tool,
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GdkModifierType key,
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gboolean press,
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GdkModifierType state,
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GimpDisplay *display)
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{
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GimpSelectionTool *selection_tool = GIMP_SELECTION_TOOL (tool);
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GimpSelectionOptions *options;
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options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
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if (key == GDK_SHIFT_MASK ||
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key == GDK_CONTROL_MASK ||
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key == GDK_MOD1_MASK)
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{
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GimpChannelOps button_op = options->operation;
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if (press)
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{
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if (key == (state & (GDK_SHIFT_MASK |
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GDK_CONTROL_MASK |
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GDK_MOD1_MASK)))
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{
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/* first modifier pressed */
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selection_tool->saved_operation = options->operation;
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}
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}
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else
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{
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if (! (state & (GDK_SHIFT_MASK |
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GDK_CONTROL_MASK |
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GDK_MOD1_MASK)))
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{
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/* last modifier released */
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button_op = selection_tool->saved_operation;
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}
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}
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if (state & GDK_MOD1_MASK)
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{
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/* if alt is down, pretend that neither
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* shift nor control are down
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*/
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button_op = selection_tool->saved_operation;
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}
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else if ((state & GDK_CONTROL_MASK) && (state & GDK_SHIFT_MASK))
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{
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button_op = GIMP_CHANNEL_OP_INTERSECT;
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}
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else if (state & GDK_SHIFT_MASK)
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{
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button_op = GIMP_CHANNEL_OP_ADD;
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}
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else if (state & GDK_CONTROL_MASK)
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{
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button_op = GIMP_CHANNEL_OP_SUBTRACT;
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}
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if (button_op != options->operation)
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{
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g_object_set (options, "operation", button_op, NULL);
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}
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}
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}
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static void
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gimp_selection_tool_oper_update (GimpTool *tool,
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const 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 *selection_tool = GIMP_SELECTION_TOOL (tool);
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GimpSelectionOptions *options;
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GimpImage *image;
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GimpChannel *selection;
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GimpDrawable *drawable;
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GimpLayer *layer;
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GimpLayer *floating_sel;
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gboolean move_layer = FALSE;
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gboolean move_floating_sel = FALSE;
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gboolean selection_empty;
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options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
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image = gimp_display_get_image (display);
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selection = gimp_image_get_mask (image);
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drawable = gimp_image_get_active_drawable (image);
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layer = gimp_image_pick_layer (image, coords->x, coords->y);
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floating_sel = gimp_image_get_floating_selection (image);
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if (drawable)
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{
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if (floating_sel)
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{
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if (layer == floating_sel)
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move_floating_sel = TRUE;
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}
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else if (gimp_drawable_mask_intersect (drawable,
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NULL, NULL, NULL, NULL))
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{
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move_layer = TRUE;
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}
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}
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selection_empty = gimp_channel_is_empty (selection);
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selection_tool->function = SELECTION_SELECT;
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if (selection_tool->allow_move &&
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(state & GDK_MOD1_MASK) && (state & GDK_CONTROL_MASK) && move_layer)
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{
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/* move the selection */
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selection_tool->function = SELECTION_MOVE;
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}
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else if (selection_tool->allow_move &&
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(state & GDK_MOD1_MASK) && (state & GDK_SHIFT_MASK) && move_layer)
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{
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/* move a copy of the selection */
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selection_tool->function = SELECTION_MOVE_COPY;
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}
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else if (selection_tool->allow_move &&
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(state & GDK_MOD1_MASK) && ! selection_empty)
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{
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/* move the selection mask */
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selection_tool->function = SELECTION_MOVE_MASK;
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}
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else if (selection_tool->allow_move &&
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! (state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) &&
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move_floating_sel)
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{
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/* move the selection */
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selection_tool->function = SELECTION_MOVE;
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}
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else if ((state & GDK_CONTROL_MASK) || (state & GDK_SHIFT_MASK))
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{
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/* select */
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selection_tool->function = SELECTION_SELECT;
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}
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else if (floating_sel)
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{
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/* anchor the selection */
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selection_tool->function = SELECTION_ANCHOR;
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}
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gimp_tool_pop_status (tool, display);
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if (proximity)
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{
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const gchar *status = NULL;
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gboolean free_status = FALSE;
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GdkModifierType modifiers = (GDK_SHIFT_MASK | GDK_CONTROL_MASK);
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if (! selection_empty)
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modifiers |= GDK_MOD1_MASK;
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switch (selection_tool->function)
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{
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case SELECTION_SELECT:
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switch (options->operation)
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{
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case GIMP_CHANNEL_OP_REPLACE:
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if (! selection_empty)
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{
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status = gimp_suggest_modifiers (_("Click-Drag to replace the "
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"current selection"),
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modifiers & ~state,
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NULL, NULL, NULL);
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free_status = TRUE;
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}
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else
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{
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status = _("Click-Drag to create a new selection");
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}
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break;
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case GIMP_CHANNEL_OP_ADD:
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status = gimp_suggest_modifiers (_("Click-Drag to add to the "
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"current selection"),
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modifiers
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& ~(state | GDK_SHIFT_MASK),
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NULL, NULL, NULL);
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free_status = TRUE;
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break;
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case GIMP_CHANNEL_OP_SUBTRACT:
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status = gimp_suggest_modifiers (_("Click-Drag to subtract from the "
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"current selection"),
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modifiers
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& ~(state | GDK_CONTROL_MASK),
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NULL, NULL, NULL);
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free_status = TRUE;
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break;
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case GIMP_CHANNEL_OP_INTERSECT:
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status = gimp_suggest_modifiers (_("Click-Drag to intersect with "
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"the current selection"),
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modifiers & ~state,
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NULL, NULL, NULL);
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free_status = TRUE;
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break;
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}
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break;
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case SELECTION_MOVE_MASK:
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status = gimp_suggest_modifiers (_("Click-Drag to move the "
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"selection mask"),
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modifiers & ~state,
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NULL, NULL, NULL);
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free_status = TRUE;
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break;
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case SELECTION_MOVE:
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status = _("Click-Drag to move the selected pixels");
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break;
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case SELECTION_MOVE_COPY:
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status = _("Click-Drag to move a copy of the selected pixels");
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break;
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case SELECTION_ANCHOR:
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status = _("Click to anchor the floating selection");
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break;
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default:
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g_return_if_reached ();
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}
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if (status)
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gimp_tool_push_status (tool, display, "%s", status);
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if (free_status)
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g_free ((gchar *) status);
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}
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}
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static void
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gimp_selection_tool_cursor_update (GimpTool *tool,
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const GimpCoords *coords,
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GdkModifierType state,
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GimpDisplay *display)
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{
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GimpSelectionTool *selection_tool = GIMP_SELECTION_TOOL (tool);
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GimpSelectionOptions *options;
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GimpToolCursorType tool_cursor;
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GimpCursorModifier modifier;
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options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
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tool_cursor = gimp_tool_control_get_tool_cursor (tool->control);
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modifier = GIMP_CURSOR_MODIFIER_NONE;
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switch (selection_tool->function)
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{
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case SELECTION_SELECT:
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switch (options->operation)
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{
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case GIMP_CHANNEL_OP_REPLACE:
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break;
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case GIMP_CHANNEL_OP_ADD:
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modifier = GIMP_CURSOR_MODIFIER_PLUS;
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break;
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case GIMP_CHANNEL_OP_SUBTRACT:
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modifier = GIMP_CURSOR_MODIFIER_MINUS;
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break;
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case GIMP_CHANNEL_OP_INTERSECT:
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modifier = GIMP_CURSOR_MODIFIER_INTERSECT;
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break;
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}
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break;
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case SELECTION_MOVE_MASK:
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modifier = GIMP_CURSOR_MODIFIER_MOVE;
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break;
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case SELECTION_MOVE:
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case SELECTION_MOVE_COPY:
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tool_cursor = GIMP_TOOL_CURSOR_MOVE;
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break;
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case SELECTION_ANCHOR:
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modifier = GIMP_CURSOR_MODIFIER_ANCHOR;
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break;
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}
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/* we don't set the bad modifier ourselves, so a subclass has set
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* it, always leave it there since it's more important than what we
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* have to say.
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*/
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if (gimp_tool_control_get_cursor_modifier (tool->control) ==
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GIMP_CURSOR_MODIFIER_BAD)
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{
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modifier = GIMP_CURSOR_MODIFIER_BAD;
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}
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gimp_tool_set_cursor (tool, display,
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gimp_tool_control_get_cursor (tool->control),
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tool_cursor,
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modifier);
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}
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/* public functions */
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gboolean
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gimp_selection_tool_start_edit (GimpSelectionTool *sel_tool,
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const GimpCoords *coords)
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{
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GimpTool *tool;
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g_return_val_if_fail (GIMP_IS_SELECTION_TOOL (sel_tool), FALSE);
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g_return_val_if_fail (coords != NULL, FALSE);
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tool = GIMP_TOOL (sel_tool);
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g_return_val_if_fail (GIMP_IS_DISPLAY (tool->display), FALSE);
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g_return_val_if_fail (gimp_tool_control_is_active (tool->control), FALSE);
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switch (sel_tool->function)
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{
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case SELECTION_MOVE_MASK:
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gimp_edit_selection_tool_start (tool, tool->display, coords,
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GIMP_TRANSLATE_MODE_MASK, FALSE);
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return TRUE;
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case SELECTION_MOVE:
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gimp_edit_selection_tool_start (tool, tool->display, coords,
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GIMP_TRANSLATE_MODE_MASK_TO_LAYER, FALSE);
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return TRUE;
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case SELECTION_MOVE_COPY:
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gimp_edit_selection_tool_start (tool, tool->display, coords,
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GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER,
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FALSE);
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return TRUE;
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default:
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break;
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}
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return FALSE;
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}
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