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gimp/app/gimpcontext.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpcontext.c: Copyright (C) 1999 Michael Natterer <mitch@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 <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "apptypes.h"
#include "context_manager.h"
#include "gdisplay.h"
#include "gimpbrush.h"
#include "gimpcontainer.h"
#include "gimpcontext.h"
#include "gimpdatafactory.h"
#include "gimpgradient.h"
#include "gimpimage.h"
#include "gimpmarshal.h"
#include "gimppalette.h"
#include "gimppattern.h"
#include "gimprc.h"
#include "temp_buf.h"
typedef void (* GimpContextCopyArgFunc) (GimpContext *src,
GimpContext *dest);
#define context_return_if_fail(context) \
g_return_if_fail ((context) != NULL); \
g_return_if_fail (GIMP_IS_CONTEXT (context))
#define context_return_val_if_fail(context,val) \
g_return_val_if_fail ((context) != NULL, (val)); \
g_return_val_if_fail (GIMP_IS_CONTEXT (context), (val))
#define context_check_current(context) \
((context) = (context) ? (context) : current_context)
#define context_find_defined(context,arg_mask) \
while (!(((context)->defined_args) & arg_mask) && (context)->parent) \
(context) = (context)->parent
/* local function prototypes */
static void gimp_context_class_init (GimpContextClass *klass);
static void gimp_context_init (GimpContext *context);
static void gimp_context_destroy (GtkObject *object);
static void gimp_context_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void gimp_context_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
/* image */
static void gimp_context_image_removed (GimpContainer *container,
GimpImage *image,
GimpContext *context);
static void gimp_context_real_set_image (GimpContext *context,
GimpImage *image);
static void gimp_context_copy_image (GimpContext *src,
GimpContext *dest);
/* display */
static void gimp_context_real_set_display (GimpContext *context,
GDisplay *display);
static void gimp_context_copy_display (GimpContext *src,
GimpContext *dest);
/* tool */
static void gimp_context_real_set_tool (GimpContext *context,
GimpTool *tool);
static void gimp_context_copy_tool (GimpContext *src,
GimpContext *dest);
/* foreground */
static void gimp_context_real_set_foreground (GimpContext *context,
const GimpRGB *color);
static void gimp_context_copy_foreground (GimpContext *src,
GimpContext *dest);
/* background */
static void gimp_context_real_set_background (GimpContext *context,
const GimpRGB *color);
static void gimp_context_copy_background (GimpContext *src,
GimpContext *dest);
/* opacity */
static void gimp_context_real_set_opacity (GimpContext *context,
gdouble opacity);
static void gimp_context_copy_opacity (GimpContext *src,
GimpContext *dest);
/* paint mode */
static void gimp_context_real_set_paint_mode (GimpContext *context,
LayerModeEffects paint_mode);
static void gimp_context_copy_paint_mode (GimpContext *src,
GimpContext *dest);
/* brush */
static void gimp_context_brush_dirty (GimpBrush *brush,
GimpContext *context);
static void gimp_context_brush_removed (GimpContainer *brush_list,
GimpBrush *brush,
GimpContext *context);
static void gimp_context_brush_list_thaw (GimpContainer *container,
GimpContext *context);
static void gimp_context_real_set_brush (GimpContext *context,
GimpBrush *brush);
static void gimp_context_copy_brush (GimpContext *src,
GimpContext *dest);
/* pattern */
static void gimp_context_pattern_dirty (GimpPattern *pattern,
GimpContext *context);
static void gimp_context_pattern_removed (GimpContainer *brush_list,
GimpPattern *pattern,
GimpContext *context);
static void gimp_context_pattern_list_thaw (GimpContainer *container,
GimpContext *context);
static void gimp_context_real_set_pattern (GimpContext *context,
GimpPattern *pattern);
static void gimp_context_copy_pattern (GimpContext *src,
GimpContext *dest);
/* gradient */
static void gimp_context_gradient_dirty (GimpGradient *gradient,
GimpContext *context);
static void gimp_context_gradient_removed (GimpContainer *container,
GimpGradient *gradient,
GimpContext *context);
static void gimp_context_gradient_list_thaw (GimpContainer *container,
GimpContext *context);
static void gimp_context_real_set_gradient (GimpContext *context,
GimpGradient *gradient);
static void gimp_context_copy_gradient (GimpContext *src,
GimpContext *dest);
/* palette */
static void gimp_context_palette_dirty (GimpPalette *palette,
GimpContext *context);
static void gimp_context_palette_removed (GimpContainer *brush_list,
GimpPalette *palatte,
GimpContext *context);
static void gimp_context_palette_list_thaw (GimpContainer *container,
GimpContext *context);
static void gimp_context_real_set_palette (GimpContext *context,
GimpPalette *palatte);
static void gimp_context_copy_palette (GimpContext *src,
GimpContext *dest);
/* arguments & signals */
enum
{
ARG_0,
ARG_IMAGE,
ARG_DISPLAY,
ARG_TOOL,
ARG_FOREGROUND,
ARG_BACKGROUND,
ARG_OPACITY,
ARG_PAINT_MODE,
ARG_BRUSH,
ARG_PATTERN,
ARG_GRADIENT,
ARG_PALETTE
};
enum
{
IMAGE_CHANGED,
DISPLAY_CHANGED,
TOOL_CHANGED,
FOREGROUND_CHANGED,
BACKGROUND_CHANGED,
OPACITY_CHANGED,
PAINT_MODE_CHANGED,
BRUSH_CHANGED,
PATTERN_CHANGED,
GRADIENT_CHANGED,
PALETTE_CHANGED,
LAST_SIGNAL
};
static gchar *gimp_context_arg_names[] =
{
"GimpContext::image",
"GimpContext::display",
"GimpContext::tool",
"GimpContext::foreground",
"GimpContext::background",
"GimpContext::opacity",
"GimpContext::paint_mode",
"GimpContext::brush",
"GimpContext::pattern",
"GimpContext::gradient",
"GimpContext::palette"
};
static GimpContextCopyArgFunc gimp_context_copy_arg_funcs[] =
{
gimp_context_copy_image,
gimp_context_copy_display,
gimp_context_copy_tool,
gimp_context_copy_foreground,
gimp_context_copy_background,
gimp_context_copy_opacity,
gimp_context_copy_paint_mode,
gimp_context_copy_brush,
gimp_context_copy_pattern,
gimp_context_copy_gradient,
gimp_context_copy_palette
};
static GtkType gimp_context_arg_types[] =
{
0,
GTK_TYPE_NONE,
GTK_TYPE_NONE,
GTK_TYPE_NONE,
GTK_TYPE_NONE,
GTK_TYPE_NONE,
GTK_TYPE_NONE,
0,
0,
0,
0
};
static gchar *gimp_context_signal_names[] =
{
"image_changed",
"display_changed",
"tool_changed",
"foreground_changed",
"background_changed",
"opacity_changed",
"paint_mode_changed",
"brush_changed",
"pattern_changed",
"gradient_changed",
"palette_changed"
};
static GtkSignalFunc gimp_context_signal_handlers[] =
{
gimp_context_real_set_image,
gimp_context_real_set_display,
gimp_context_real_set_tool,
gimp_context_real_set_foreground,
gimp_context_real_set_background,
gimp_context_real_set_opacity,
gimp_context_real_set_paint_mode,
gimp_context_real_set_brush,
gimp_context_real_set_pattern,
gimp_context_real_set_gradient,
gimp_context_real_set_palette
};
static guint gimp_context_signals[LAST_SIGNAL] = { 0 };
static GimpObjectClass * parent_class = NULL;
/* the currently active context */
static GimpContext *current_context = NULL;
/* the context user by the interface */
static GimpContext *user_context = NULL;
/* the default context which is initialized from gimprc */
static GimpContext *default_context = NULL;
/* the hardcoded standard context */
static GimpContext *standard_context = NULL;
/* the list of all contexts */
static GSList *context_list = NULL;
/*****************************************************************************/
/* private functions *******************************************************/
static void
gimp_context_class_init (GimpContextClass *klass)
{
GtkObjectClass *object_class;
object_class = GTK_OBJECT_CLASS (klass);
parent_class = gtk_type_class (GIMP_TYPE_OBJECT);
gimp_context_arg_types[GIMP_CONTEXT_ARG_IMAGE] = GIMP_TYPE_IMAGE;
gimp_context_arg_types[GIMP_CONTEXT_ARG_BRUSH] = GIMP_TYPE_BRUSH;
gimp_context_arg_types[GIMP_CONTEXT_ARG_PATTERN] = GIMP_TYPE_PATTERN;
gimp_context_arg_types[GIMP_CONTEXT_ARG_GRADIENT] = GIMP_TYPE_GRADIENT;
gimp_context_arg_types[GIMP_CONTEXT_ARG_PALETTE] = GIMP_TYPE_PALETTE;
gtk_object_add_arg_type (gimp_context_arg_names[IMAGE_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_IMAGE);
gtk_object_add_arg_type (gimp_context_arg_names[DISPLAY_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_DISPLAY);
gtk_object_add_arg_type (gimp_context_arg_names[TOOL_CHANGED],
GTK_TYPE_INT, GTK_ARG_READWRITE,
ARG_TOOL);
gtk_object_add_arg_type (gimp_context_arg_names[FOREGROUND_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_FOREGROUND);
gtk_object_add_arg_type (gimp_context_arg_names[BACKGROUND_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_BACKGROUND);
gtk_object_add_arg_type (gimp_context_arg_names[OPACITY_CHANGED],
GTK_TYPE_DOUBLE, GTK_ARG_READWRITE,
ARG_OPACITY);
gtk_object_add_arg_type (gimp_context_arg_names[PAINT_MODE_CHANGED],
GTK_TYPE_INT, GTK_ARG_READWRITE,
ARG_PAINT_MODE);
gtk_object_add_arg_type (gimp_context_arg_names[BRUSH_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_BRUSH);
gtk_object_add_arg_type (gimp_context_arg_names[PATTERN_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_PATTERN);
gtk_object_add_arg_type (gimp_context_arg_names[GRADIENT_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_GRADIENT);
gtk_object_add_arg_type (gimp_context_arg_names[PALETTE_CHANGED],
GTK_TYPE_POINTER, GTK_ARG_READWRITE,
ARG_PALETTE);
gimp_context_signals[IMAGE_CHANGED] =
gtk_signal_new (gimp_context_signal_names[IMAGE_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
image_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[DISPLAY_CHANGED] =
gtk_signal_new (gimp_context_signal_names[DISPLAY_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
display_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[TOOL_CHANGED] =
gtk_signal_new (gimp_context_signal_names[TOOL_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
tool_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[FOREGROUND_CHANGED] =
gtk_signal_new (gimp_context_signal_names[FOREGROUND_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
foreground_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[BACKGROUND_CHANGED] =
gtk_signal_new (gimp_context_signal_names[BACKGROUND_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
background_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[OPACITY_CHANGED] =
gtk_signal_new (gimp_context_signal_names[OPACITY_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
opacity_changed),
gimp_marshal_NONE__DOUBLE,
GTK_TYPE_NONE, 1,
GTK_TYPE_DOUBLE);
gimp_context_signals[PAINT_MODE_CHANGED] =
gtk_signal_new (gimp_context_signal_names[PAINT_MODE_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
paint_mode_changed),
gtk_marshal_NONE__INT,
GTK_TYPE_NONE, 1,
GTK_TYPE_INT);
gimp_context_signals[BRUSH_CHANGED] =
gtk_signal_new (gimp_context_signal_names[BRUSH_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
brush_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[PATTERN_CHANGED] =
gtk_signal_new (gimp_context_signal_names[PATTERN_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
pattern_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[GRADIENT_CHANGED] =
gtk_signal_new (gimp_context_signal_names[GRADIENT_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
gradient_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gimp_context_signals[PALETTE_CHANGED] =
gtk_signal_new (gimp_context_signal_names[PALETTE_CHANGED],
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GimpContextClass,
palette_changed),
gtk_marshal_NONE__POINTER,
GTK_TYPE_NONE, 1,
GTK_TYPE_POINTER);
gtk_object_class_add_signals (object_class, gimp_context_signals,
LAST_SIGNAL);
object_class->set_arg = gimp_context_set_arg;
object_class->get_arg = gimp_context_get_arg;
object_class->destroy = gimp_context_destroy;
klass->image_changed = NULL;
klass->display_changed = NULL;
klass->tool_changed = NULL;
klass->foreground_changed = NULL;
klass->background_changed = NULL;
klass->opacity_changed = NULL;
klass->paint_mode_changed = NULL;
klass->brush_changed = NULL;
klass->pattern_changed = NULL;
klass->gradient_changed = NULL;
klass->palette_changed = NULL;
}
static void
gimp_context_init (GimpContext *context)
{
context->parent = NULL;
context->defined_args = GIMP_CONTEXT_ALL_ARGS_MASK;
context->image = NULL;
context->display = NULL;
context->tool = NULL;
gimp_rgba_set (&context->foreground, 0.0, 0.0, 0.0, 1.0);
gimp_rgba_set (&context->background, 1.0, 1.0, 1.0, 1.0);
context->opacity = 1.0;
context->paint_mode = NORMAL_MODE;
context->brush = NULL;
context->brush_name = NULL;
context->pattern = NULL;
context->pattern_name = NULL;
context->gradient = NULL;
context->gradient_name = NULL;
context->palette = NULL;
context->palette_name = NULL;
context_list = g_slist_prepend (context_list, context);
}
static void
gimp_context_destroy (GtkObject *object)
{
GimpContext *context;
context = GIMP_CONTEXT (object);
if (context->parent)
gimp_context_unset_parent (context);
if (context->brush)
gtk_object_unref (GTK_OBJECT (context->brush));
if (context->brush_name)
{
g_free (context->brush_name);
context->brush_name = NULL;
}
if (context->pattern)
gtk_object_unref (GTK_OBJECT (context->pattern));
if (context->pattern_name)
{
g_free (context->pattern_name);
context->pattern_name = NULL;
}
if (context->gradient)
gtk_object_unref (GTK_OBJECT (context->gradient));
if (context->gradient_name)
{
g_free (context->gradient_name);
context->gradient_name = NULL;
}
if (context->palette)
gtk_object_unref (GTK_OBJECT (context->palette));
if (context->palette_name)
{
g_free (context->palette_name);
context->palette_name = NULL;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
context_list = g_slist_remove (context_list, context);
}
static void
gimp_context_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GimpContext *context;
context = GIMP_CONTEXT (object);
switch (arg_id)
{
case ARG_IMAGE:
gimp_context_set_image (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_DISPLAY:
gimp_context_set_display (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_TOOL:
gimp_context_set_tool (context, GTK_VALUE_INT (*arg));
break;
case ARG_FOREGROUND:
gimp_context_set_foreground (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_BACKGROUND:
gimp_context_set_background (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_OPACITY:
gimp_context_set_opacity (context, GTK_VALUE_DOUBLE (*arg));
break;
case ARG_PAINT_MODE:
gimp_context_set_paint_mode (context, GTK_VALUE_INT (*arg));
break;
case ARG_BRUSH:
gimp_context_set_brush (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_PATTERN:
gimp_context_set_pattern (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_GRADIENT:
gimp_context_set_gradient (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_PALETTE:
gimp_context_set_palette (context, GTK_VALUE_POINTER (*arg));
break;
default:
break;
}
}
static void
gimp_context_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
GimpContext *context;
context = GIMP_CONTEXT (object);
switch (arg_id)
{
case ARG_IMAGE:
GTK_VALUE_POINTER (*arg) = gimp_context_get_image (context);
break;
case ARG_DISPLAY:
GTK_VALUE_POINTER (*arg) = gimp_context_get_display (context);
break;
case ARG_TOOL:
GTK_VALUE_INT (*arg) = gimp_context_get_tool (context);
break;
case ARG_FOREGROUND:
gimp_context_get_foreground (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_BACKGROUND:
gimp_context_get_background (context, GTK_VALUE_POINTER (*arg));
break;
case ARG_OPACITY:
GTK_VALUE_DOUBLE (*arg) = gimp_context_get_opacity (context);
break;
case ARG_PAINT_MODE:
GTK_VALUE_INT (*arg) = gimp_context_get_paint_mode (context);
break;
case ARG_BRUSH:
GTK_VALUE_POINTER (*arg) = gimp_context_get_brush (context);
break;
case ARG_PATTERN:
GTK_VALUE_POINTER (*arg) = gimp_context_get_pattern (context);
break;
case ARG_GRADIENT:
GTK_VALUE_POINTER (*arg) = gimp_context_get_gradient (context);
break;
case ARG_PALETTE:
GTK_VALUE_POINTER (*arg) = gimp_context_get_palette (context);
break;
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}
/*****************************************************************************/
/* public functions ********************************************************/
GtkType
gimp_context_get_type (void)
{
static GtkType context_type = 0;
if (! context_type)
{
GtkTypeInfo context_info =
{
"GimpContext",
sizeof (GimpContext),
sizeof (GimpContextClass),
(GtkClassInitFunc) gimp_context_class_init,
(GtkObjectInitFunc) gimp_context_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
context_type = gtk_type_unique (GIMP_TYPE_OBJECT, &context_info);
}
return context_type;
}
GimpContext *
gimp_context_new (const gchar *name,
GimpContext *template)
{
GimpContext *context;
g_return_val_if_fail (!template || GIMP_IS_CONTEXT (template), NULL);
context = gtk_type_new (GIMP_TYPE_CONTEXT);
/* FIXME: need unique names here */
if (! name)
name = "Unnamed";
gimp_object_set_name (GIMP_OBJECT (context), name);
gtk_signal_connect_while_alive (GTK_OBJECT (image_context), "remove",
GTK_SIGNAL_FUNC (gimp_context_image_removed),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_brush_factory->container),
"remove",
GTK_SIGNAL_FUNC (gimp_context_brush_removed),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_brush_factory->container),
"thaw",
GTK_SIGNAL_FUNC (gimp_context_brush_list_thaw),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_pattern_factory->container),
"remove",
GTK_SIGNAL_FUNC (gimp_context_pattern_removed),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_pattern_factory->container),
"thaw",
GTK_SIGNAL_FUNC (gimp_context_pattern_list_thaw),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_gradient_factory->container),
"remove",
GTK_SIGNAL_FUNC (gimp_context_gradient_removed),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_gradient_factory->container),
"thaw",
GTK_SIGNAL_FUNC (gimp_context_gradient_list_thaw),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_palette_factory->container),
"remove",
GTK_SIGNAL_FUNC (gimp_context_palette_removed),
context,
GTK_OBJECT (context));
gtk_signal_connect_while_alive (GTK_OBJECT (global_palette_factory->container),
"thaw",
GTK_SIGNAL_FUNC (gimp_context_palette_list_thaw),
context,
GTK_OBJECT (context));
if (template)
{
context->defined_args = template->defined_args;
gimp_context_copy_args (template, context, GIMP_CONTEXT_ALL_ARGS_MASK);
}
return context;
}
/*****************************************************************************/
/* getting/setting the special contexts ************************************/
GimpContext *
gimp_context_get_current (void)
{
return current_context;
}
void
gimp_context_set_current (GimpContext *context)
{
current_context = context;
}
GimpContext *
gimp_context_get_user (void)
{
return user_context;
}
void
gimp_context_set_user (GimpContext *context)
{
user_context = context;
}
GimpContext *
gimp_context_get_default (void)
{
return default_context;
}
void
gimp_context_set_default (GimpContext *context)
{
default_context = context;
}
GimpContext *
gimp_context_get_standard (void)
{
if (! standard_context)
{
standard_context = gimp_context_new ("Standard", NULL);
gtk_quit_add_destroy (TRUE, GTK_OBJECT (standard_context));
}
return standard_context;
}
/*****************************************************************************/
/* functions manipulating a single context *********************************/
const gchar *
gimp_context_get_name (const GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return gimp_object_get_name (GIMP_OBJECT (context));
}
void
gimp_context_set_name (GimpContext *context,
const gchar *name)
{
context_check_current (context);
context_return_if_fail (context);
if (! name)
name = "Unnamed";
gimp_object_set_name (GIMP_OBJECT (context), name);
}
GimpContext *
gimp_context_get_parent (const GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return context->parent;
}
void
gimp_context_set_parent (GimpContext *context,
GimpContext *parent)
{
GimpContextArgType arg;
context_check_current (context);
context_return_if_fail (context);
g_return_if_fail (!parent || GIMP_IS_CONTEXT (parent));
if (context == parent)
return;
for (arg = 0; arg < GIMP_CONTEXT_NUM_ARGS; arg++)
if (! ((1 << arg) & context->defined_args))
{
gimp_context_copy_arg (parent, context, arg);
gtk_signal_connect_object (GTK_OBJECT (parent),
gimp_context_signal_names[arg],
gimp_context_signal_handlers[arg],
GTK_OBJECT (context));
}
context->parent = parent;
}
void
gimp_context_unset_parent (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
if (context->parent)
{
if (context->defined_args != GIMP_CONTEXT_ALL_ARGS_MASK)
gtk_signal_disconnect_by_data (GTK_OBJECT (context->parent), context);
context->parent = NULL;
}
}
/* define / undefinine context arguments */
void
gimp_context_define_arg (GimpContext *context,
GimpContextArgType arg,
gboolean defined)
{
GimpContextArgMask mask;
context_check_current (context);
context_return_if_fail (context);
g_return_if_fail ((arg >= 0) && (arg < GIMP_CONTEXT_NUM_ARGS));
mask = (1 << arg);
if (defined)
{
if (! (context->defined_args & mask))
{
context->defined_args |= mask;
if (context->parent)
gtk_signal_disconnect_by_func (GTK_OBJECT (context->parent),
gimp_context_signal_handlers[arg],
context);
}
}
else
{
if (context->defined_args & mask)
{
context->defined_args &= ~mask;
if (context->parent)
{
gimp_context_copy_arg (context->parent, context, arg);
gtk_signal_connect_object (GTK_OBJECT (context->parent),
gimp_context_signal_names[arg],
gimp_context_signal_handlers[arg],
GTK_OBJECT (context));
}
}
}
}
gboolean
gimp_context_arg_defined (GimpContext *context,
GimpContextArgType arg)
{
context_check_current (context);
context_return_val_if_fail (context, FALSE);
return (context->defined_args & (1 << arg)) ? TRUE : FALSE;
}
void
gimp_context_define_args (GimpContext *context,
GimpContextArgMask args_mask,
gboolean defined)
{
GimpContextArgType arg;
context_check_current (context);
context_return_if_fail (context);
for (arg = 0; arg < GIMP_CONTEXT_NUM_ARGS; arg++)
if ((1 << arg) & args_mask)
gimp_context_define_arg (context, arg, defined);
}
/* copying context arguments */
void
gimp_context_copy_arg (GimpContext *src,
GimpContext *dest,
GimpContextArgType arg)
{
context_check_current (src);
context_return_if_fail (src);
context_check_current (dest);
context_return_if_fail (dest);
g_return_if_fail ((arg >= 0) && (arg < GIMP_CONTEXT_NUM_ARGS));
(* gimp_context_copy_arg_funcs[arg]) (src, dest);
}
void
gimp_context_copy_args (GimpContext *src,
GimpContext *dest,
GimpContextArgMask args_mask)
{
GimpContextArgType arg;
context_check_current (src);
context_return_if_fail (src);
context_check_current (dest);
context_return_if_fail (dest);
for (arg = 0; arg < GIMP_CONTEXT_NUM_ARGS; arg++)
if ((1 << arg) & args_mask)
{
gimp_context_copy_arg (src, dest, arg);
}
}
/* attribute access functions */
/*****************************************************************************/
/* manipulate by GtkType ***************************************************/
GimpContextArgType
gimp_context_type_to_arg (GtkType type)
{
gint i;
for (i = 0; i < GIMP_CONTEXT_NUM_ARGS; i++)
{
if (gimp_context_arg_types[i] == type)
return i;
}
return -1;
}
const gchar *
gimp_context_type_to_signal_name (GtkType type)
{
gint i;
for (i = 0; i < GIMP_CONTEXT_NUM_ARGS; i++)
{
if (gimp_context_arg_types[i] == type)
return gimp_context_signal_names[i];
}
return NULL;
}
GimpObject *
gimp_context_get_by_type (GimpContext *context,
GtkType type)
{
GimpContextArgType arg;
GimpObject *object = NULL;
context_check_current (context);
context_return_val_if_fail (context, NULL);
g_return_val_if_fail ((arg = gimp_context_type_to_arg (type)) != -1, NULL);
gtk_object_get (GTK_OBJECT (context),
gimp_context_arg_names[arg], &object,
NULL);
return object;
}
void
gimp_context_set_by_type (GimpContext *context,
GtkType type,
GimpObject *object)
{
GimpContextArgType arg;
context_check_current (context);
context_return_if_fail (context);
g_return_if_fail ((arg = gimp_context_type_to_arg (type)) != -1);
gtk_object_set (GTK_OBJECT (context),
gimp_context_arg_names[arg], object,
NULL);
}
void
gimp_context_changed_by_type (GimpContext *context,
GtkType type)
{
GimpContextArgType arg;
GimpObject *object;
context_check_current (context);
context_return_if_fail (context);
g_return_if_fail ((arg = gimp_context_type_to_arg (type)) != -1);
object = gimp_context_get_by_type (context, type);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[arg],
object);
}
/*****************************************************************************/
/* image *******************************************************************/
GimpImage *
gimp_context_get_image (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return context->image;
}
void
gimp_context_set_image (GimpContext *context,
GimpImage *image)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_IMAGE_MASK);
gimp_context_real_set_image (context, image);
}
void
gimp_context_image_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[IMAGE_CHANGED],
context->image);
}
/* handle disappearing images */
static void
gimp_context_image_removed (GimpContainer *container,
GimpImage *image,
GimpContext *context)
{
if (context->image == image)
gimp_context_real_set_image (context, NULL);
}
static void
gimp_context_real_set_image (GimpContext *context,
GimpImage *image)
{
if (context->image == image)
return;
context->image = image;
gimp_context_image_changed (context);
}
static void
gimp_context_copy_image (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_image (dest, src->image);
}
/*****************************************************************************/
/* display *****************************************************************/
GDisplay *
gimp_context_get_display (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return context->display;
}
void
gimp_context_set_display (GimpContext *context,
GDisplay *display)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_DISPLAY_MASK);
gimp_context_real_set_display (context, display);
}
void
gimp_context_display_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[DISPLAY_CHANGED],
context->display);
}
/* handle dissapearing displays */
static void
gimp_context_display_destroy (GtkWidget *disp_shell,
GimpContext *context)
{
context->display = NULL;
gimp_context_display_changed (context);
}
static void
gimp_context_real_set_display (GimpContext *context,
GDisplay *display)
{
if (context->display == display)
return;
if (context->display && GTK_IS_OBJECT (context->display->shell))
gtk_signal_disconnect_by_data (GTK_OBJECT (context->display->shell),
context);
if (display)
gtk_signal_connect_while_alive
(GTK_OBJECT (display->shell), "destroy",
GTK_SIGNAL_FUNC (gimp_context_display_destroy),
context,
GTK_OBJECT (context));
context->display = display;
/* set the image _before_ emitting the display_changed signal */
if (display)
gimp_context_real_set_image (context, display->gimage);
gimp_context_display_changed (context);
}
static void
gimp_context_copy_display (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_display (dest, src->display);
}
/*****************************************************************************/
/* tool ********************************************************************/
GimpTool *
gimp_context_get_tool (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, 0);
return context->tool;
}
void
gimp_context_set_tool (GimpContext *context,
GimpTool *tool)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_TOOL_MASK);
gimp_context_real_set_tool (context, tool);
}
void
gimp_context_tool_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[TOOL_CHANGED],
context->tool);
}
static void
gimp_context_real_set_tool (GimpContext *context,
GimpTool *tool)
{
if (context->tool == tool)
return;
context->tool = tool;
gimp_context_tool_changed (context);
}
static void
gimp_context_copy_tool (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_tool (dest, src->tool);
}
/*****************************************************************************/
/* foreground color ********************************************************/
void
gimp_context_get_foreground (GimpContext *context,
GimpRGB *color)
{
context_check_current (context);
context_return_if_fail (context);
g_return_if_fail (color != NULL);
*color = context->foreground;
}
void
gimp_context_set_foreground (GimpContext *context,
const GimpRGB *color)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_FOREGROUND_MASK);
g_return_if_fail (color != NULL);
gimp_context_real_set_foreground (context, color);
}
void
gimp_context_foreground_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[FOREGROUND_CHANGED],
&context->foreground);
}
static void
gimp_context_real_set_foreground (GimpContext *context,
const GimpRGB *color)
{
if (gimp_rgba_distance (&context->foreground, color) < 0.0001)
return;
context->foreground = *color;
gimp_context_foreground_changed (context);
}
static void
gimp_context_copy_foreground (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_foreground (dest, &src->foreground);
}
/*****************************************************************************/
/* background color ********************************************************/
void
gimp_context_get_background (GimpContext *context,
GimpRGB *color)
{
context_check_current (context);
context_return_if_fail (context);
g_return_if_fail (color != NULL);
*color = context->background;
}
void
gimp_context_set_background (GimpContext *context,
const GimpRGB *color)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_BACKGROUND_MASK);
g_return_if_fail (color != NULL);
gimp_context_real_set_background (context, color);
}
void
gimp_context_background_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[BACKGROUND_CHANGED],
&context->background);
}
static void
gimp_context_real_set_background (GimpContext *context,
const GimpRGB *color)
{
if (gimp_rgba_distance (&context->background, color) < 0.0001)
return;
context->background = *color;
gimp_context_background_changed (context);
}
static void
gimp_context_copy_background (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_background (dest, &src->background);
}
/*****************************************************************************/
/* color utility functions *************************************************/
void
gimp_context_set_default_colors (GimpContext *context)
{
GimpContext *bg_context;
GimpRGB fg;
GimpRGB bg;
bg_context = context;
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_FOREGROUND_MASK);
context_find_defined (bg_context, GIMP_CONTEXT_BACKGROUND_MASK);
gimp_rgba_set (&fg, 0.0, 0.0, 0.0, 1.0);
gimp_rgba_set (&bg, 1.0, 1.0, 1.0, 1.0);
gimp_context_real_set_foreground (context, &fg);
gimp_context_real_set_background (bg_context, &bg);
}
void
gimp_context_swap_colors (GimpContext *context)
{
GimpContext *bg_context;
GimpRGB fg;
GimpRGB bg;
bg_context = context;
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_FOREGROUND_MASK);
context_find_defined (bg_context, GIMP_CONTEXT_BACKGROUND_MASK);
gimp_context_get_foreground (context, &fg);
gimp_context_get_background (bg_context, &bg);
gimp_context_real_set_foreground (context, &bg);
gimp_context_real_set_background (bg_context, &fg);
}
/*****************************************************************************/
/* opacity *****************************************************************/
gdouble
gimp_context_get_opacity (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, 1.0);
return context->opacity;
}
void
gimp_context_set_opacity (GimpContext *context,
gdouble opacity)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_OPACITY_MASK);
gimp_context_real_set_opacity (context, opacity);
}
void
gimp_context_opacity_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[OPACITY_CHANGED],
context->opacity);
}
static void
gimp_context_real_set_opacity (GimpContext *context,
gdouble opacity)
{
if (context->opacity == opacity)
return;
context->opacity = opacity;
gimp_context_opacity_changed (context);
}
static void
gimp_context_copy_opacity (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_opacity (dest, src->opacity);
}
/*****************************************************************************/
/* paint mode **************************************************************/
LayerModeEffects
gimp_context_get_paint_mode (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, 0);
return context->paint_mode;
}
void
gimp_context_set_paint_mode (GimpContext *context,
LayerModeEffects paint_mode)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_PAINT_MODE_MASK);
gimp_context_real_set_paint_mode (context, paint_mode);
}
void
gimp_context_paint_mode_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[PAINT_MODE_CHANGED],
context->paint_mode);
}
static void
gimp_context_real_set_paint_mode (GimpContext *context,
LayerModeEffects paint_mode)
{
if (context->paint_mode == paint_mode)
return;
context->paint_mode = paint_mode;
gimp_context_paint_mode_changed (context);
}
static void
gimp_context_copy_paint_mode (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_paint_mode (dest, src->paint_mode);
}
/*****************************************************************************/
/* brush *******************************************************************/
static GimpBrush *standard_brush = NULL;
GimpBrush *
gimp_context_get_brush (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return context->brush;
}
void
gimp_context_set_brush (GimpContext *context,
GimpBrush *brush)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_BRUSH_MASK);
gimp_context_real_set_brush (context, brush);
}
void
gimp_context_brush_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[BRUSH_CHANGED],
context->brush);
}
/* the active brush was modified */
static void
gimp_context_brush_dirty (GimpBrush *brush,
GimpContext *context)
{
g_free (context->brush_name);
context->brush_name = g_strdup (GIMP_OBJECT (brush)->name);
gimp_context_brush_changed (context);
}
/* the global brush list is there again after refresh */
static void
gimp_context_brush_list_thaw (GimpContainer *container,
GimpContext *context)
{
GimpBrush *brush;
if (! context->brush_name)
context->brush_name = g_strdup (default_brush);
if ((brush = (GimpBrush *)
gimp_container_get_child_by_name (container,
context->brush_name)))
{
gimp_context_real_set_brush (context, brush);
return;
}
if (gimp_container_num_children (container))
gimp_context_real_set_brush
(context, GIMP_BRUSH (gimp_container_get_child_by_index (container, 0)));
else
gimp_context_real_set_brush (context,
GIMP_BRUSH (gimp_brush_get_standard ()));
}
/* the active brush disappeared */
static void
gimp_context_brush_removed (GimpContainer *container,
GimpBrush *brush,
GimpContext *context)
{
if (brush == context->brush)
{
context->brush = NULL;
gtk_signal_disconnect_by_func (GTK_OBJECT (brush),
gimp_context_brush_dirty,
context);
gtk_object_unref (GTK_OBJECT (brush));
if (! gimp_container_frozen (container))
gimp_context_brush_list_thaw (container, context);
}
}
static void
gimp_context_real_set_brush (GimpContext *context,
GimpBrush *brush)
{
if (! standard_brush)
standard_brush = GIMP_BRUSH (gimp_brush_get_standard ());
if (context->brush == brush)
return;
if (context->brush_name && brush != standard_brush)
{
g_free (context->brush_name);
context->brush_name = NULL;
}
/* make sure the active brush is swapped before we get a new one... */
if (stingy_memory_use &&
context->brush && context->brush->mask &&
GTK_OBJECT (context->brush)->ref_count == 2)
{
temp_buf_swap (brush->mask);
}
/* disconnect from the old brush's signals */
if (context->brush)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (context->brush),
gimp_context_brush_dirty,
context);
gtk_object_unref (GTK_OBJECT (context->brush));
}
context->brush = brush;
if (brush)
{
gtk_object_ref (GTK_OBJECT (brush));
gtk_signal_connect (GTK_OBJECT (brush), "invalidate_preview",
GTK_SIGNAL_FUNC (gimp_context_brush_dirty),
context);
gtk_signal_connect (GTK_OBJECT (brush), "name_changed",
GTK_SIGNAL_FUNC (gimp_context_brush_dirty),
context);
/* Make sure the active brush is unswapped... */
if (stingy_memory_use &&
brush->mask &&
GTK_OBJECT (brush)->ref_count < 2)
{
temp_buf_unswap (brush->mask);
}
if (brush != standard_brush)
context->brush_name = g_strdup (GIMP_OBJECT (brush)->name);
}
gimp_context_brush_changed (context);
}
static void
gimp_context_copy_brush (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_brush (dest, src->brush);
if ((!src->brush || src->brush == standard_brush) && src->brush_name)
{
g_free (dest->brush_name);
dest->brush_name = g_strdup (src->brush_name);
}
}
/*****************************************************************************/
/* pattern *****************************************************************/
static GimpPattern *standard_pattern = NULL;
GimpPattern *
gimp_context_get_pattern (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return context->pattern;
}
void
gimp_context_set_pattern (GimpContext *context,
GimpPattern *pattern)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_PATTERN_MASK);
gimp_context_real_set_pattern (context, pattern);
}
void
gimp_context_pattern_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[PATTERN_CHANGED],
context->pattern);
}
/* the active pattern was modified */
static void
gimp_context_pattern_dirty (GimpPattern *pattern,
GimpContext *context)
{
g_free (context->pattern_name);
context->pattern_name = g_strdup (GIMP_OBJECT (pattern)->name);
gimp_context_pattern_changed (context);
}
/* the global pattern list is there again after refresh */
static void
gimp_context_pattern_list_thaw (GimpContainer *container,
GimpContext *context)
{
GimpPattern *pattern;
if (! context->pattern_name)
context->pattern_name = g_strdup (default_pattern);
if ((pattern = (GimpPattern *)
gimp_container_get_child_by_name (container,
context->pattern_name)))
{
gimp_context_real_set_pattern (context, pattern);
return;
}
if (gimp_container_num_children (container))
gimp_context_real_set_pattern
(context,
GIMP_PATTERN (gimp_container_get_child_by_index (container, 0)));
else
gimp_context_real_set_pattern (context,
GIMP_PATTERN (gimp_pattern_get_standard ()));
}
/* the active pattern disappeared */
static void
gimp_context_pattern_removed (GimpContainer *container,
GimpPattern *pattern,
GimpContext *context)
{
if (pattern == context->pattern)
{
context->pattern = NULL;
gtk_signal_disconnect_by_func (GTK_OBJECT (pattern),
gimp_context_pattern_dirty,
context);
gtk_object_unref (GTK_OBJECT (pattern));
if (! gimp_container_frozen (container))
gimp_context_pattern_list_thaw (container, context);
}
}
static void
gimp_context_real_set_pattern (GimpContext *context,
GimpPattern *pattern)
{
if (! standard_pattern)
standard_pattern = GIMP_PATTERN (gimp_pattern_get_standard ());
if (context->pattern == pattern)
return;
if (context->pattern_name && pattern != standard_pattern)
{
g_free (context->pattern_name);
context->pattern_name = NULL;
}
/* make sure the active pattern is swapped before we get a new one... */
if (stingy_memory_use &&
context->pattern && context->pattern->mask &&
GTK_OBJECT (context->pattern)->ref_count == 2)
{
temp_buf_swap (pattern->mask);
}
/* disconnect from the old pattern's signals */
if (context->pattern)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (context->pattern),
gimp_context_pattern_dirty,
context);
gtk_object_unref (GTK_OBJECT (context->pattern));
}
context->pattern = pattern;
if (pattern)
{
gtk_object_ref (GTK_OBJECT (pattern));
gtk_signal_connect (GTK_OBJECT (pattern), "name_changed",
GTK_SIGNAL_FUNC (gimp_context_pattern_dirty),
context);
/* Make sure the active pattern is unswapped... */
if (stingy_memory_use &&
pattern->mask &&
GTK_OBJECT (pattern)->ref_count < 2)
{
temp_buf_unswap (pattern->mask);
}
if (pattern != standard_pattern)
context->pattern_name = g_strdup (GIMP_OBJECT (pattern)->name);
}
gimp_context_pattern_changed (context);
}
static void
gimp_context_copy_pattern (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_pattern (dest, src->pattern);
if ((!src->pattern || src->pattern == standard_pattern) && src->pattern_name)
{
g_free (dest->pattern_name);
dest->pattern_name = g_strdup (src->pattern_name);
}
}
/*****************************************************************************/
/* gradient ****************************************************************/
static GimpGradient *standard_gradient = NULL;
GimpGradient *
gimp_context_get_gradient (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return context->gradient;
}
void
gimp_context_set_gradient (GimpContext *context,
GimpGradient *gradient)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_GRADIENT_MASK);
gimp_context_real_set_gradient (context, gradient);
}
void
gimp_context_gradient_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[GRADIENT_CHANGED],
context->gradient);
}
/* the active gradient was modified */
static void
gimp_context_gradient_dirty (GimpGradient *gradient,
GimpContext *context)
{
g_free (context->gradient_name);
context->gradient_name = g_strdup (GIMP_OBJECT (gradient)->name);
gimp_context_gradient_changed (context);
}
/* the global gradient list is there again after refresh */
static void
gimp_context_gradient_list_thaw (GimpContainer *container,
GimpContext *context)
{
GimpGradient *gradient;
if (! context->gradient_name)
context->gradient_name = g_strdup (default_gradient);
if ((gradient = (GimpGradient *)
gimp_container_get_child_by_name (container,
context->gradient_name)))
{
gimp_context_real_set_gradient (context, gradient);
return;
}
if (gimp_container_num_children (container))
gimp_context_real_set_gradient
(context,
GIMP_GRADIENT (gimp_container_get_child_by_index (container, 0)));
else
gimp_context_real_set_gradient (context,
GIMP_GRADIENT (gimp_gradient_get_standard ()));
}
/* the active gradient disappeared */
static void
gimp_context_gradient_removed (GimpContainer *container,
GimpGradient *gradient,
GimpContext *context)
{
if (gradient == context->gradient)
{
context->gradient = NULL;
gtk_signal_disconnect_by_func (GTK_OBJECT (gradient),
gimp_context_gradient_dirty,
context);
gtk_object_unref (GTK_OBJECT (gradient));
if (! gimp_container_frozen (container))
gimp_context_gradient_list_thaw (container, context);
}
}
static void
gimp_context_real_set_gradient (GimpContext *context,
GimpGradient *gradient)
{
if (! standard_gradient)
standard_gradient = GIMP_GRADIENT (gimp_gradient_get_standard ());
if (context->gradient == gradient)
return;
if (context->gradient_name && gradient != standard_gradient)
{
g_free (context->gradient_name);
context->gradient_name = NULL;
}
/* disconnect from the old gradient's signals */
if (context->gradient)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (context->gradient),
gimp_context_gradient_dirty,
context);
gtk_object_unref (GTK_OBJECT (context->gradient));
}
context->gradient = gradient;
if (gradient)
{
gtk_object_ref (GTK_OBJECT (gradient));
gtk_signal_connect (GTK_OBJECT (gradient), "name_changed",
GTK_SIGNAL_FUNC (gimp_context_gradient_dirty),
context);
if (gradient != standard_gradient)
context->gradient_name = g_strdup (GIMP_OBJECT (gradient)->name);
}
gimp_context_gradient_changed (context);
}
static void
gimp_context_copy_gradient (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_gradient (dest, src->gradient);
if ((!src->gradient || src->gradient == standard_gradient) &&
src->gradient_name)
{
g_free (dest->gradient_name);
dest->gradient_name = g_strdup (src->gradient_name);
}
}
/*****************************************************************************/
/* palette *****************************************************************/
static GimpPalette *standard_palette = NULL;
GimpPalette *
gimp_context_get_palette (GimpContext *context)
{
context_check_current (context);
context_return_val_if_fail (context, NULL);
return context->palette;
}
void
gimp_context_set_palette (GimpContext *context,
GimpPalette *palette)
{
context_check_current (context);
context_return_if_fail (context);
context_find_defined (context, GIMP_CONTEXT_PALETTE_MASK);
gimp_context_real_set_palette (context, palette);
}
void
gimp_context_palette_changed (GimpContext *context)
{
context_check_current (context);
context_return_if_fail (context);
gtk_signal_emit (GTK_OBJECT (context),
gimp_context_signals[PALETTE_CHANGED],
context->palette);
}
/* the active palette was modified */
static void
gimp_context_palette_dirty (GimpPalette *palette,
GimpContext *context)
{
g_free (context->palette_name);
context->palette_name = g_strdup (GIMP_OBJECT (palette)->name);
gimp_context_palette_changed (context);
}
/* the global gradient list is there again after refresh */
static void
gimp_context_palette_list_thaw (GimpContainer *container,
GimpContext *context)
{
GimpPalette *palette;
if (! context->palette_name)
context->palette_name = g_strdup (default_palette);
if ((palette = (GimpPalette *)
gimp_container_get_child_by_name (container,
context->palette_name)))
{
gimp_context_real_set_palette (context, palette);
return;
}
if (gimp_container_num_children (container))
gimp_context_real_set_palette
(context,
GIMP_PALETTE (gimp_container_get_child_by_index (container, 0)));
else
gimp_context_real_set_palette (context,
GIMP_PALETTE (gimp_palette_get_standard ()));
}
/* the active palette disappeared */
static void
gimp_context_palette_removed (GimpContainer *container,
GimpPalette *palette,
GimpContext *context)
{
if (palette == context->palette)
{
context->palette = NULL;
gtk_signal_disconnect_by_func (GTK_OBJECT (palette),
gimp_context_palette_dirty,
context);
gtk_object_unref (GTK_OBJECT (palette));
if (! gimp_container_frozen (container))
gimp_context_palette_list_thaw (container, context);
}
}
static void
gimp_context_real_set_palette (GimpContext *context,
GimpPalette *palette)
{
if (! standard_palette)
standard_palette = GIMP_PALETTE (gimp_palette_get_standard ());
if (context->palette == palette)
return;
if (context->palette_name && palette != standard_palette)
{
g_free (context->palette_name);
context->palette_name = NULL;
}
/* disconnect from the old palette's signals */
if (context->palette)
{
gtk_signal_disconnect_by_func (GTK_OBJECT (context->palette),
gimp_context_palette_dirty,
context);
gtk_object_unref (GTK_OBJECT (context->palette));
}
context->palette = palette;
if (palette)
{
gtk_object_ref (GTK_OBJECT (palette));
gtk_signal_connect (GTK_OBJECT (palette), "name_changed",
GTK_SIGNAL_FUNC (gimp_context_palette_dirty),
context);
if (palette != standard_palette)
context->palette_name = g_strdup (GIMP_OBJECT (palette)->name);
}
gimp_context_palette_changed (context);
}
static void
gimp_context_copy_palette (GimpContext *src,
GimpContext *dest)
{
gimp_context_real_set_palette (dest, src->palette);
if ((!src->palette || src->palette == standard_palette) && src->palette_name)
{
g_free (dest->palette_name);
dest->palette_name = g_strdup (src->palette_name);
}
}
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