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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimpchannel.h"
#include "core/gimpimage.h"
#include "core/gimppickable.h"
#include "display/gimpdisplay.h"
#include "widgets/gimpwidgets-utils.h"
#include "gimpeditselectiontool.h"
#include "gimpselectiontool.h"
#include "gimpselectionoptions.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
static void gimp_selection_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_selection_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static void gimp_selection_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
G_DEFINE_TYPE (GimpSelectionTool, gimp_selection_tool, GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_selection_tool_parent_class
static void
gimp_selection_tool_class_init (GimpSelectionToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
tool_class->modifier_key = gimp_selection_tool_modifier_key;
tool_class->key_press = gimp_edit_selection_tool_key_press;
tool_class->oper_update = gimp_selection_tool_oper_update;
tool_class->cursor_update = gimp_selection_tool_cursor_update;
}
static void
gimp_selection_tool_init (GimpSelectionTool *selection_tool)
{
selection_tool->function = SELECTION_SELECT;
selection_tool->saved_operation = GIMP_CHANNEL_OP_REPLACE;
selection_tool->allow_move = TRUE;
}
static void
gimp_selection_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpSelectionTool *selection_tool = GIMP_SELECTION_TOOL (tool);
GimpSelectionOptions *options;
options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
if (key == GDK_SHIFT_MASK ||
key == GDK_CONTROL_MASK ||
key == GDK_MOD1_MASK)
{
GimpChannelOps button_op = options->operation;
if (press)
{
if (key == (state & (GDK_SHIFT_MASK |
GDK_CONTROL_MASK |
GDK_MOD1_MASK)))
{
/* first modifier pressed */
selection_tool->saved_operation = options->operation;
}
}
else
{
if (! (state & (GDK_SHIFT_MASK |
GDK_CONTROL_MASK |
GDK_MOD1_MASK)))
{
/* last modifier released */
button_op = selection_tool->saved_operation;
}
}
if (state & GDK_MOD1_MASK)
{
/* if alt is down, pretend that neither
* shift nor control are down
*/
button_op = selection_tool->saved_operation;
}
else if ((state & GDK_CONTROL_MASK) && (state & GDK_SHIFT_MASK))
{
button_op = GIMP_CHANNEL_OP_INTERSECT;
}
else if (state & GDK_SHIFT_MASK)
{
button_op = GIMP_CHANNEL_OP_ADD;
}
else if (state & GDK_CONTROL_MASK)
{
button_op = GIMP_CHANNEL_OP_SUBTRACT;
}
if (button_op != options->operation)
{
g_object_set (options, "operation", button_op, NULL);
}
}
}
static void
gimp_selection_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpSelectionTool *selection_tool = GIMP_SELECTION_TOOL (tool);
GimpSelectionOptions *options;
GimpChannel *selection;
GimpDrawable *drawable;
GimpLayer *layer;
GimpLayer *floating_sel;
gboolean move_layer = FALSE;
gboolean move_floating_sel = FALSE;
gboolean selection_empty;
options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
selection = gimp_image_get_mask (display->image);
drawable = gimp_image_get_active_drawable (display->image);
layer = gimp_image_pick_correlate_layer (display->image,
coords->x, coords->y);
floating_sel = gimp_image_floating_sel (display->image);
if (drawable)
{
if (floating_sel)
{
if (layer == floating_sel)
move_floating_sel = TRUE;
}
else if (gimp_drawable_mask_intersect (drawable,
NULL, NULL, NULL, NULL))
{
move_layer = TRUE;
}
}
selection_empty = gimp_channel_is_empty (selection);
selection_tool->function = SELECTION_SELECT;
if (selection_tool->allow_move &&
(state & GDK_MOD1_MASK) && (state & GDK_CONTROL_MASK) && move_layer)
{
/* move the selection */
selection_tool->function = SELECTION_MOVE;
}
else if (selection_tool->allow_move &&
(state & GDK_MOD1_MASK) && (state & GDK_SHIFT_MASK) && move_layer)
{
/* move a copy of the selection */
selection_tool->function = SELECTION_MOVE_COPY;
}
else if (selection_tool->allow_move &&
(state & GDK_MOD1_MASK) && ! selection_empty)
{
/* move the selection mask */
selection_tool->function = SELECTION_MOVE_MASK;
}
else if (selection_tool->allow_move &&
! (state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) &&
move_floating_sel)
{
/* move the selection */
selection_tool->function = SELECTION_MOVE;
}
else if ((state & GDK_CONTROL_MASK) || (state & GDK_SHIFT_MASK))
{
/* select */
selection_tool->function = SELECTION_SELECT;
}
else if (floating_sel)
{
/* anchor the selection */
selection_tool->function = SELECTION_ANCHOR;
}
gimp_tool_pop_status (tool, display);
if (proximity)
{
gchar *status = NULL;
gboolean free_status = FALSE;
GdkModifierType modifiers = (GDK_SHIFT_MASK | GDK_CONTROL_MASK);
if (! selection_empty)
modifiers |= GDK_MOD1_MASK;
switch (selection_tool->function)
{
case SELECTION_SELECT:
switch (options->operation)
{
case GIMP_CHANNEL_OP_REPLACE:
if (! selection_empty)
{
status = gimp_suggest_modifiers (_("Click-Drag to replace the "
"current selection"),
modifiers & ~state,
NULL, NULL, NULL);
free_status = TRUE;
}
else
{
status = _("Click-Drag to create a new selection");
}
break;
case GIMP_CHANNEL_OP_ADD:
status = gimp_suggest_modifiers (_("Click-Drag to add to the "
"current selection"),
modifiers
& ~(state | GDK_SHIFT_MASK),
NULL, NULL, NULL);
free_status = TRUE;
break;
case GIMP_CHANNEL_OP_SUBTRACT:
status = gimp_suggest_modifiers (_("Click-Drag to subtract from the "
"current selection"),
modifiers
& ~(state | GDK_CONTROL_MASK),
NULL, NULL, NULL);
free_status = TRUE;
break;
case GIMP_CHANNEL_OP_INTERSECT:
status = gimp_suggest_modifiers (_("Click-Drag to intersect with "
"the current selection"),
modifiers & ~state,
NULL, NULL, NULL);
free_status = TRUE;
break;
}
break;
case SELECTION_MOVE_MASK:
status = gimp_suggest_modifiers (_("Click-Drag to move the "
"selection mask"),
modifiers & ~state,
NULL, NULL, NULL);
free_status = TRUE;
break;
case SELECTION_MOVE:
status = _("Click-Drag to move the selected pixels");
break;
case SELECTION_MOVE_COPY:
status = _("Click-Drag to move a copy of the selected pixels");
break;
case SELECTION_ANCHOR:
status = _("Click to anchor the floating selection");
break;
default:
g_return_if_reached ();
}
if (status)
gimp_tool_push_status (tool, display, status);
if (free_status)
g_free (status);
}
}
static void
gimp_selection_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpSelectionTool *selection_tool = GIMP_SELECTION_TOOL (tool);
GimpSelectionOptions *options;
GimpToolCursorType tool_cursor;
GimpCursorModifier modifier;
options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
tool_cursor = gimp_tool_control_get_tool_cursor (tool->control);
modifier = GIMP_CURSOR_MODIFIER_NONE;
switch (selection_tool->function)
{
case SELECTION_SELECT:
switch (options->operation)
{
case GIMP_CHANNEL_OP_REPLACE:
break;
case GIMP_CHANNEL_OP_ADD:
modifier = GIMP_CURSOR_MODIFIER_PLUS;
break;
case GIMP_CHANNEL_OP_SUBTRACT:
modifier = GIMP_CURSOR_MODIFIER_MINUS;
break;
case GIMP_CHANNEL_OP_INTERSECT:
modifier = GIMP_CURSOR_MODIFIER_INTERSECT;
break;
}
break;
case SELECTION_MOVE_MASK:
modifier = GIMP_CURSOR_MODIFIER_MOVE;
break;
case SELECTION_MOVE:
case SELECTION_MOVE_COPY:
tool_cursor = GIMP_TOOL_CURSOR_MOVE;
break;
case SELECTION_ANCHOR:
modifier = GIMP_CURSOR_MODIFIER_ANCHOR;
break;
}
/* we don't set the bad modifier ourselves, so a subclass has set
* it, always leave it there since it's more important than what we
* have to say.
*/
if (gimp_tool_control_get_cursor_modifier (tool->control) ==
GIMP_CURSOR_MODIFIER_BAD)
{
modifier = GIMP_CURSOR_MODIFIER_BAD;
}
gimp_tool_set_cursor (tool, display,
gimp_tool_control_get_cursor (tool->control),
tool_cursor,
modifier);
}
/* public functions */
gboolean
gimp_selection_tool_start_edit (GimpSelectionTool *sel_tool,
GimpCoords *coords)
{
GimpTool *tool;
g_return_val_if_fail (GIMP_IS_SELECTION_TOOL (sel_tool), FALSE);
g_return_val_if_fail (coords != NULL, FALSE);
tool = GIMP_TOOL (sel_tool);
g_return_val_if_fail (GIMP_IS_DISPLAY (tool->display), FALSE);
g_return_val_if_fail (gimp_tool_control_is_active (tool->control), FALSE);
switch (sel_tool->function)
{
case SELECTION_MOVE_MASK:
gimp_edit_selection_tool_start (tool, tool->display, coords,
GIMP_TRANSLATE_MODE_MASK, FALSE);
return TRUE;
case SELECTION_MOVE:
gimp_edit_selection_tool_start (tool, tool->display, coords,
GIMP_TRANSLATE_MODE_MASK_TO_LAYER, FALSE);
return TRUE;
case SELECTION_MOVE_COPY:
gimp_edit_selection_tool_start (tool, tool->display, coords,
GIMP_TRANSLATE_MODE_MASK_COPY_TO_LAYER,
FALSE);
return TRUE;
default:
break;
}
return FALSE;
}
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