gimp/app/context_manager.c

249 lines
6.7 KiB
C

/* The GIMP -- an 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 "appenv.h"
#include "cursorutil.h"
#include "context_manager.h"
#include "gdisplay.h"
#include "gimprc.h"
#include "paint_options.h"
#include "tools.h"
static GimpContext * global_tool_context;
#define PAINT_OPTIONS_MASK GIMP_CONTEXT_OPACITY_MASK | \
GIMP_CONTEXT_PAINT_MODE_MASK
static void
context_manager_display_changed (GimpContext *context,
GDisplay *display,
gpointer data)
{
gdisplay_set_menu_sensitivity (display);
}
static void
context_manager_tool_changed (GimpContext *user_context,
ToolType tool_type,
gpointer data)
{
/* FIXME: gimp_busy HACK */
if (gimp_busy)
{
/* there may be contexts waiting for the user_context's "tool_changed"
* signal, so stop emitting it.
*/
gtk_signal_emit_stop_by_name (GTK_OBJECT (user_context), "tool_changed");
if (active_tool->type != tool_type)
{
gtk_signal_handler_block_by_func (GTK_OBJECT (user_context),
context_manager_tool_changed,
NULL);
/* explicitly set the current tool */
gimp_context_set_tool (user_context, active_tool->type);
gtk_signal_handler_unblock_by_func (GTK_OBJECT (user_context),
context_manager_tool_changed,
NULL);
}
/* take care that the correct toolbox button gets re-activated */
tool_type = active_tool->type;
}
else
{
GimpContext* tool_context;
if (! global_paint_options)
{
if (active_tool &&
(tool_context = tool_info[active_tool->type].tool_context))
{
gimp_context_unset_parent (tool_context);
}
if ((tool_context = tool_info[tool_type].tool_context))
{
gimp_context_copy_args (tool_context, user_context,
PAINT_OPTIONS_MASK);
gimp_context_set_parent (tool_context, user_context);
}
}
tools_select (tool_type);
}
if (tool_type == SCALE ||
tool_type == SHEAR ||
tool_type == PERSPECTIVE)
tool_type = ROTATE;
if (! GTK_TOGGLE_BUTTON (tool_info[tool_type].tool_widget)->active)
{
gtk_signal_handler_block_by_data
(GTK_OBJECT (tool_info[tool_type].tool_widget), (gpointer) tool_type);
gtk_widget_activate (tool_info[tool_type].tool_widget);
gtk_signal_handler_unblock_by_data
(GTK_OBJECT (tool_info[tool_type].tool_widget), (gpointer) tool_type);
}
}
void
context_manager_init (void)
{
GimpContext *standard_context;
GimpContext *default_context;
GimpContext *user_context;
gint i;
/* Implicitly create the standard context */
standard_context = gimp_context_get_standard ();
/* TODO: load from disk */
default_context = gimp_context_new ("Default", NULL);
gimp_context_set_default (default_context);
/* Initialize the user context will with the default context's values */
user_context = gimp_context_new ("User", default_context);
gimp_context_set_user (user_context);
/* Update the tear-off menus */
gtk_signal_connect (GTK_OBJECT (user_context), "display_changed",
GTK_SIGNAL_FUNC (context_manager_display_changed),
NULL);
/* Update the tool system */
gtk_signal_connect (GTK_OBJECT (user_context), "tool_changed",
GTK_SIGNAL_FUNC (context_manager_tool_changed),
NULL);
/* Make the user contect the currently active context */
gimp_context_set_current (user_context);
/* Create a context to store the paint options of the
* global paint options mode
*/
global_tool_context = gimp_context_new ("Global Tool Context", user_context);
/* TODO: add foreground, background, brush, pattern, gradient */
gimp_context_define_args (global_tool_context, PAINT_OPTIONS_MASK, FALSE);
/* Initialize the paint tools' private contexts */
for (i = 0; i < num_tools; i++)
{
switch (tool_info[i].tool_id)
{
case BUCKET_FILL:
case BLEND:
case PENCIL:
case PAINTBRUSH:
case ERASER:
case AIRBRUSH:
case CLONE:
case CONVOLVE:
case INK:
case DODGEBURN:
case SMUDGE:
/* case XINPUT_AIRBRUSH: */
tool_info[i].tool_context =
gimp_context_new (tool_info[i].private_tip, global_tool_context);
break;
default:
tool_info[i].tool_context = NULL;
break;
}
}
if (! global_paint_options &&
active_tool &&
tool_info[active_tool->type].tool_context)
{
gimp_context_set_parent (tool_info[active_tool->type].tool_context,
user_context);
}
else if (global_paint_options)
{
gimp_context_set_parent (global_tool_context, user_context);
}
}
void
context_manager_free (void)
{
gint i;
gtk_object_unref (GTK_OBJECT (global_tool_context));
global_tool_context = NULL;
for (i = 0; i < num_tools; i++)
{
if (tool_info[i].tool_context != NULL)
{
gtk_object_unref (GTK_OBJECT (tool_info[i].tool_context));
tool_info[i].tool_context = NULL;
}
}
gtk_object_unref (GTK_OBJECT (gimp_context_get_user ()));
gimp_context_set_user (NULL);
gimp_context_set_current (NULL);
/* TODO: Save to disk before destroying */
gtk_object_unref (GTK_OBJECT (gimp_context_get_default ()));
gimp_context_set_default (NULL);
}
void
context_manager_set_global_paint_options (gboolean global)
{
GimpContext* context;
if (global == global_paint_options) return;
paint_options_set_global (global);
if (global)
{
if (active_tool &&
(context = tool_info[active_tool->type].tool_context))
{
gimp_context_unset_parent (context);
}
gimp_context_copy_args (global_tool_context, gimp_context_get_user (),
PAINT_OPTIONS_MASK);
gimp_context_set_parent (global_tool_context, gimp_context_get_user ());
}
else
{
gimp_context_unset_parent (global_tool_context);
if (active_tool &&
(context = tool_info[active_tool->type].tool_context))
{
gimp_context_copy_args (context, gimp_context_get_user (),
GIMP_CONTEXT_PAINT_ARGS_MASK);
gimp_context_set_parent (context, gimp_context_get_user ());
}
}
}