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gimp/app/tools/gimpvectortool.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* Vector tool
* Copyright (C) 2002 Simon Budig <simon@gimp.org>
*
* 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 <stdlib.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimplist.h"
#include "core/gimptoolinfo.h"
#include "vectors/gimpanchor.h"
#include "vectors/gimpvectors.h"
#include "vectors/gimpbezierstroke.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-foreach.h"
#include "gimptoolcontrol.h"
#include "gimpvectoroptions.h"
#include "gimpvectortool.h"
#include "gimp-intl.h"
#define TARGET 9
/* local function prototypes */
static void gimp_vector_tool_class_init (GimpVectorToolClass *klass);
static void gimp_vector_tool_init (GimpVectorTool *tool);
static void gimp_vector_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_vector_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_vector_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static gboolean gimp_vector_tool_on_handle (GimpTool *tool,
GimpCoords *coords,
GimpAnchorType preferred,
GimpDisplay *gdisp,
GimpAnchor **ret_anchor,
GimpStroke **ret_stroke);
static void gimp_vector_tool_draw (GimpDrawTool *draw_tool);
static void gimp_vector_tool_clear_vectors (GimpVectorTool *vector_tool);
static void gimp_vector_tool_vectors_freeze (GimpVectors *vectors,
GimpVectorTool *vector_tool);
static void gimp_vector_tool_vectors_thaw (GimpVectors *vectors,
GimpVectorTool *vector_tool);
static GimpSelectionToolClass *parent_class = NULL;
void
gimp_vector_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_VECTOR_TOOL,
GIMP_TYPE_VECTOR_OPTIONS,
gimp_vector_options_gui,
0,
"gimp-vector-tool",
_("Vectors"),
_("the most promising path tool prototype... :-)"),
N_("/Tools/Vectors"), NULL,
NULL, "tools/vector.html",
GIMP_STOCK_TOOL_PATH,
data);
}
GType
gimp_vector_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpVectorToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_vector_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpVectorTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_vector_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_SELECTION_TOOL,
"GimpVectorTool",
&tool_info, 0);
}
return tool_type;
}
static void
gimp_vector_tool_class_init (GimpVectorToolClass *klass)
{
GObjectClass *object_class;
GimpToolClass *tool_class;
GimpDrawToolClass *draw_tool_class;
object_class = G_OBJECT_CLASS (klass);
tool_class = GIMP_TOOL_CLASS (klass);
draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
tool_class->control = gimp_vector_tool_control;
tool_class->button_press = gimp_vector_tool_button_press;
tool_class->button_release = gimp_vector_tool_button_release;
tool_class->motion = gimp_vector_tool_motion;
tool_class->cursor_update = gimp_vector_tool_cursor_update;
draw_tool_class->draw = gimp_vector_tool_draw;
}
static void
gimp_vector_tool_init (GimpVectorTool *vector_tool)
{
GimpTool *tool;
tool = GIMP_TOOL (vector_tool);
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
vector_tool->function = VECTORS_CREATING;
vector_tool->last_x = 0;
vector_tool->last_y = 0;
vector_tool->cur_anchor = NULL;
vector_tool->cur_stroke = NULL;
vector_tool->vectors = NULL;
vector_tool->active_anchors = NULL;
}
static void
gimp_vector_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
vector_tool = GIMP_VECTOR_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
break;
case HALT:
/* gimp_tool_pop_status (tool); */
gimp_tool_control_halt (tool->control);
gimp_vector_tool_clear_vectors (vector_tool);
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_vector_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
GimpVectorOptions *options;
GimpAnchor *anchor = NULL;
GimpStroke *stroke = NULL;
GimpAnchorType preferred = GIMP_ANCHOR_ANCHOR;
vector_tool = GIMP_VECTOR_TOOL (tool);
options = GIMP_VECTOR_OPTIONS (tool->tool_info->tool_options);
/* when pressing mouse down
*
* Anchor: (NONE) -> Regular Movement
* (SHFT) -> multiple selection
* (CTRL) -> Drag out control point
* (CTRL+SHFT) -> Convert to corner
*
* Handle: (NONE) -> Regular Movement
* (SHFT) -> (Handle) Move opposite handle symmetrically
* (CTRL+SHFT) -> move handle to its anchor
*/
/* if we are changing displays, pop the statusbar of the old one */
if (gimp_tool_control_is_active (tool->control) && gdisp != tool->gdisp)
{
/* gimp_tool_pop_status (tool); */
}
vector_tool->restriction = GIMP_ANCHOR_FEATURE_NONE;
if (vector_tool->vectors &&
gdisp->gimage != GIMP_ITEM (vector_tool->vectors)->gimage)
gimp_vector_tool_clear_vectors (vector_tool);
if (gimp_tool_control_is_active (tool->control))
{
/* reset everything */
gimp_draw_tool_stop (GIMP_DRAW_TOOL (vector_tool));
}
tool->gdisp = gdisp;
if (! vector_tool->vectors || vector_tool->function == VECTORS_CREATING)
{
if (! vector_tool->vectors)
{
GimpVectors *vectors;
vectors = gimp_vectors_new (gdisp->gimage, _("Unnamed"));
gimp_image_add_vectors (gdisp->gimage, vectors, -1);
vector_tool->vectors = g_object_ref (vectors);
g_signal_connect_object (vectors, "removed",
G_CALLBACK (gimp_vector_tool_clear_vectors),
vector_tool,
G_CONNECT_SWAPPED);
g_signal_connect_object (vectors, "freeze",
G_CALLBACK (gimp_vector_tool_vectors_freeze),
vector_tool,
0);
g_signal_connect_object (vectors, "thaw",
G_CALLBACK (gimp_vector_tool_vectors_thaw),
vector_tool,
0);
}
stroke = gimp_bezier_stroke_new ();
anchor = gimp_bezier_stroke_extend (GIMP_BEZIER_STROKE (stroke), coords,
NULL, EXTEND_EDITABLE);
gimp_vectors_stroke_add (vector_tool->vectors, stroke);
vector_tool->function = VECTORS_MOVING;
/* We want to drag out the control point later */
state |= GDK_CONTROL_MASK;
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
/* start drawing the vector tool */
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), gdisp);
}
else if (!gimp_vector_tool_on_handle (tool, coords, GIMP_ANCHOR_CONTROL,
gdisp, NULL, NULL))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (vector_tool));
/* not on an anchor, we go into ADDING mode */
vector_tool->function = VECTORS_ADDING;
anchor = gimp_bezier_stroke_extend (GIMP_BEZIER_STROKE (vector_tool->cur_stroke),
coords, vector_tool->cur_anchor,
EXTEND_EDITABLE);
if (anchor)
vector_tool->cur_anchor = anchor;
state |= GDK_CONTROL_MASK;
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (vector_tool));
}
if (state & GDK_CONTROL_MASK && !(state & GDK_SHIFT_MASK))
preferred = GIMP_ANCHOR_CONTROL;
anchor = vector_tool->cur_anchor;
if (gimp_vector_tool_on_handle (tool, coords,
preferred, gdisp, &anchor, &stroke))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (vector_tool));
if (anchor->type == GIMP_ANCHOR_ANCHOR)
{
if (state & GDK_SHIFT_MASK && !(state & GDK_CONTROL_MASK))
gimp_stroke_anchor_select (stroke, anchor, FALSE);
else
gimp_stroke_anchor_select (stroke, anchor, TRUE);
/* Maybe convert to edge */
if (state & GDK_CONTROL_MASK && state & GDK_SHIFT_MASK)
{
gimp_stroke_anchor_convert (stroke, anchor,
GIMP_ANCHOR_FEATURE_EDGE);
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
}
/* if the selected anchor changed, the visible control
* points might have changed too */
if (state & GDK_CONTROL_MASK)
gimp_vector_tool_on_handle (tool, coords, GIMP_ANCHOR_CONTROL,
gdisp, &anchor, &stroke);
}
else
{
if (state & GDK_SHIFT_MASK && state & GDK_CONTROL_MASK)
{
gimp_stroke_anchor_convert (stroke, anchor,
GIMP_ANCHOR_FEATURE_EDGE);
vector_tool->cur_stroke = NULL;
vector_tool->cur_anchor = NULL;
}
}
vector_tool->function = VECTORS_MOVING;
vector_tool->cur_stroke = stroke;
vector_tool->cur_anchor = anchor;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (vector_tool));
}
gimp_tool_control_activate (tool->control);
}
static void
gimp_vector_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
GimpViewable *viewable;
vector_tool = GIMP_VECTOR_TOOL (tool);
vector_tool->function = VECTORS_ADDING;
/* THIS DOES NOT BELONG HERE! */
if (vector_tool->vectors)
{
viewable = GIMP_VIEWABLE (vector_tool->vectors);
gimp_viewable_invalidate_preview (viewable);
}
gimp_tool_control_halt (tool->control);
}
static void
gimp_vector_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
GimpVectorOptions *options;
GimpAnchor *anchor;
/* While moving:
* (SHFT) -> restrict movement
*/
vector_tool = GIMP_VECTOR_TOOL (tool);
options = GIMP_VECTOR_OPTIONS (tool->tool_info->tool_options);
gimp_vectors_freeze (vector_tool->vectors);
if (state & GDK_SHIFT_MASK)
{
vector_tool->restriction = GIMP_ANCHOR_FEATURE_SYMMETRIC;
}
else
{
vector_tool->restriction = GIMP_ANCHOR_FEATURE_NONE;
}
switch (vector_tool->function)
{
case VECTORS_MOVING:
anchor = vector_tool->cur_anchor;
if (anchor)
gimp_stroke_anchor_move_absolute (vector_tool->cur_stroke,
vector_tool->cur_anchor,
coords, vector_tool->restriction);
default:
break;
}
gimp_vectors_thaw (vector_tool->vectors);
}
static gboolean
gimp_vector_tool_on_handle (GimpTool *tool,
GimpCoords *coords,
GimpAnchorType preferred,
GimpDisplay *gdisp,
GimpAnchor **ret_anchor,
GimpStroke **ret_stroke)
{
GimpVectorTool *vector_tool;
GimpStroke *stroke = NULL;
GimpStroke *pref_stroke = NULL;
GimpAnchor *anchor = NULL;
GimpAnchor *pref_anchor = NULL;
GList *list, *anchor_list = NULL;
gdouble dx, dy, pref_mindist = -1, mindist = -1;
vector_tool = GIMP_VECTOR_TOOL (tool);
if (!vector_tool->vectors)
{
if (ret_anchor)
*ret_anchor = NULL;
if (ret_stroke)
*ret_stroke = NULL;
return FALSE;
}
while ((stroke = gimp_vectors_stroke_get_next (vector_tool->vectors, stroke))
!= NULL)
{
anchor_list = gimp_stroke_get_draw_anchors (stroke);
list = gimp_stroke_get_draw_controls (stroke);
anchor_list = g_list_concat (anchor_list, list);
while (anchor_list)
{
dx = coords->x - ((GimpAnchor *) anchor_list->data)->position.x;
dy = coords->y - ((GimpAnchor *) anchor_list->data)->position.y;
if (mindist < 0 || mindist > dx * dx + dy * dy)
{
mindist = dx * dx + dy * dy;
anchor = (GimpAnchor *) anchor_list->data;
if (ret_stroke)
*ret_stroke = stroke;
}
if ((pref_mindist < 0 || pref_mindist > dx * dx + dy * dy) &&
((GimpAnchor *) anchor_list->data)->type == preferred)
{
pref_mindist = dx * dx + dy * dy;
pref_anchor = (GimpAnchor *) anchor_list->data;
pref_stroke = stroke;
}
anchor_list = anchor_list->next;
}
g_list_free (anchor_list);
}
/* If the data passed into ret_anchor is a preferred anchor, return
* it.
*/
if (ret_anchor && *ret_anchor
&& gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coords->x,
coords->y,
GIMP_HANDLE_CIRCLE,
(*ret_anchor)->position.x,
(*ret_anchor)->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE)
&& (*ret_anchor)->type == preferred)
{
if (ret_stroke)
*ret_stroke = pref_stroke;
return TRUE;
}
if (pref_anchor && gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coords->x,
coords->y,
GIMP_HANDLE_CIRCLE,
pref_anchor->position.x,
pref_anchor->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE))
{
if (ret_anchor)
*ret_anchor = pref_anchor;
if (ret_stroke)
*ret_stroke = pref_stroke;
return TRUE;
}
else if (anchor && gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coords->x,
coords->y,
GIMP_HANDLE_CIRCLE,
anchor->position.x,
anchor->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE))
{
if (ret_anchor)
*ret_anchor = anchor;
/* *ret_stroke already set correctly. */
return TRUE;
}
else
{
if (ret_anchor)
*ret_anchor = NULL;
if (ret_stroke)
*ret_stroke = NULL;
return FALSE;
}
}
static void
gimp_vector_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpVectorTool *vector_tool;
gboolean in_handle = FALSE;
GdkCursorType ctype = GIMP_MOUSE_CURSOR;
GimpCursorModifier cmodifier = GIMP_CURSOR_MODIFIER_NONE;
GimpAnchor *anchor;
vector_tool = GIMP_VECTOR_TOOL (tool);
if (vector_tool->vectors &&
gimp_tool_control_is_active (tool->control) && tool->gdisp == gdisp)
{
anchor = gimp_vectors_anchor_get (vector_tool->vectors, coords, NULL);
if (anchor && gimp_draw_tool_on_handle (GIMP_DRAW_TOOL (tool), gdisp,
coords->x,
coords->y,
GIMP_HANDLE_CIRCLE,
anchor->position.x,
anchor->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE))
{
in_handle = TRUE;
cmodifier = GIMP_CURSOR_MODIFIER_MOVE;
}
}
gimp_tool_control_set_cursor (tool->control, ctype);
gimp_tool_control_set_cursor_modifier (tool->control, cmodifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_vector_tool_draw (GimpDrawTool *draw_tool)
{
GimpVectorTool *vector_tool;
GimpTool *tool;
GimpAnchor *cur_anchor = NULL;
GimpStroke *cur_stroke = NULL;
GimpVectors *vectors;
GArray *coords;
gboolean closed;
GList *draw_anchors;
GList *list;
vector_tool = GIMP_VECTOR_TOOL (draw_tool);
tool = GIMP_TOOL (draw_tool);
vectors = vector_tool->vectors;
if (!vectors)
return;
while ((cur_stroke = gimp_vectors_stroke_get_next (vectors, cur_stroke)))
{
/* anchor handles */
draw_anchors = gimp_stroke_get_draw_anchors (cur_stroke);
for (list = draw_anchors; list; list = g_list_next (list))
{
cur_anchor = (GimpAnchor *) list->data;
if (cur_anchor->type == GIMP_ANCHOR_ANCHOR)
{
gimp_draw_tool_draw_handle (draw_tool,
cur_anchor->selected ?
GIMP_HANDLE_CIRCLE :
GIMP_HANDLE_FILLED_CIRCLE,
cur_anchor->position.x,
cur_anchor->position.y,
TARGET,
TARGET,
GTK_ANCHOR_CENTER,
FALSE);
}
}
g_list_free (draw_anchors);
/* control handles */
draw_anchors = gimp_stroke_get_draw_controls (cur_stroke);
for (list = draw_anchors; list; list = g_list_next (list))
{
cur_anchor = (GimpAnchor *) list->data;
gimp_draw_tool_draw_handle (draw_tool,
GIMP_HANDLE_SQUARE,
cur_anchor->position.x,
cur_anchor->position.y,
TARGET - 3,
TARGET - 3,
GTK_ANCHOR_CENTER,
FALSE);
}
g_list_free (draw_anchors);
/* the lines to the control handles */
coords = gimp_stroke_get_draw_lines (cur_stroke);
if (coords->len % 2 == 0)
{
gint i;
for (i = 0; i < coords->len; i += 2)
gimp_draw_tool_draw_strokes (draw_tool,
&g_array_index (coords,
GimpCoords, i),
2, FALSE, FALSE);
}
g_array_free (coords, TRUE);
/* the stroke itself */
coords = gimp_stroke_interpolate (cur_stroke, 1.0, &closed);
if (coords->len)
gimp_draw_tool_draw_strokes (draw_tool,
&g_array_index (coords, GimpCoords, 0),
coords->len, FALSE, FALSE);
g_array_free (coords, TRUE);
}
}
static void
gimp_vector_tool_clear_vectors (GimpVectorTool *vector_tool)
{
g_return_if_fail (GIMP_IS_VECTOR_TOOL (vector_tool));
gimp_vector_tool_set_vectors (vector_tool, NULL);
}
static void
gimp_vector_tool_vectors_freeze (GimpVectors *vectors,
GimpVectorTool *vector_tool)
{
GimpDrawTool *draw_tool;
draw_tool = GIMP_DRAW_TOOL (vector_tool);
g_print ("vectors freeze\n");
if (draw_tool->gdisp)
gimp_draw_tool_pause (draw_tool);
}
static void
gimp_vector_tool_vectors_thaw (GimpVectors *vectors,
GimpVectorTool *vector_tool)
{
GimpDrawTool *draw_tool;
draw_tool = GIMP_DRAW_TOOL (vector_tool);
g_print ("vectors thaw\n");
if (draw_tool->gdisp)
gimp_draw_tool_resume (draw_tool);
}
void
gimp_vector_tool_set_vectors (GimpVectorTool *vector_tool,
GimpVectors *vectors)
{
GimpDrawTool *draw_tool;
GimpTool *tool;
GimpItem *item = NULL;
g_return_if_fail (GIMP_IS_VECTOR_TOOL (vector_tool));
g_return_if_fail (vectors == NULL || GIMP_IS_VECTORS (vectors));
draw_tool = GIMP_DRAW_TOOL (vector_tool);
tool = GIMP_TOOL (vector_tool);
if (vectors)
item = GIMP_ITEM (vectors);
if (vectors == vector_tool->vectors)
return;
if (draw_tool->gdisp)
{
if (vectors && draw_tool->gdisp->gimage == item->gimage)
gimp_draw_tool_pause (draw_tool);
else
gimp_draw_tool_stop (draw_tool);
}
if (vector_tool->vectors)
{
g_signal_handlers_disconnect_by_func (vector_tool->vectors,
gimp_vector_tool_clear_vectors,
vector_tool);
g_signal_handlers_disconnect_by_func (vector_tool->vectors,
gimp_vector_tool_vectors_freeze,
vector_tool);
g_signal_handlers_disconnect_by_func (vector_tool->vectors,
gimp_vector_tool_vectors_thaw,
vector_tool);
g_object_unref (vector_tool->vectors);
}
vector_tool->vectors = vectors;
vector_tool->cur_stroke = NULL;
vector_tool->cur_anchor = NULL;
vector_tool->active_anchors = NULL;
vector_tool->function = VECTORS_CREATING;
if (! vector_tool->vectors)
{
tool->gdisp = NULL;
gimp_tool_control_halt (tool->control);
return;
}
g_object_ref (vectors);
g_signal_connect_object (vectors, "removed",
G_CALLBACK (gimp_vector_tool_clear_vectors),
vector_tool,
G_CONNECT_SWAPPED);
g_signal_connect_object (vectors, "freeze",
G_CALLBACK (gimp_vector_tool_vectors_freeze),
vector_tool,
0);
g_signal_connect_object (vectors, "thaw",
G_CALLBACK (gimp_vector_tool_vectors_thaw),
vector_tool,
0);
if (draw_tool->gdisp && draw_tool->gdisp->gimage == item->gimage)
{
gimp_draw_tool_resume (draw_tool);
}
else if (tool->gdisp && tool->gdisp->gimage == item->gimage)
{
gimp_draw_tool_start (draw_tool, tool->gdisp);
}
else
{
GimpContext *context;
GimpDisplay *gdisp;
context = gimp_get_current_context (tool->tool_info->gimp);
gdisp = gimp_context_get_display (context);
if (! gdisp || gdisp->gimage != item->gimage)
{
GList *list;
gdisp = NULL;
for (list = GIMP_LIST (item->gimage->gimp->displays)->list;
list;
list = g_list_next (list))
{
if (((GimpDisplay *) list->data)->gimage == item->gimage)
{
gimp_context_set_display (context,
(GimpDisplay *) list->data);
gdisp = gimp_context_get_display (context);
break;
}
}
}
if (gdisp)
{
tool->gdisp = gdisp;
gimp_tool_control_activate (tool->control);
gimp_draw_tool_start (draw_tool, tool->gdisp);
}
}
}
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