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gimp/app/gui/pattern-select.c

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/* 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 "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "gui-types.h"
#include "base/temp-buf.h"
#include "core/gimp.h"
#include "core/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpdatafactory.h"
#include "core/gimppattern.h"
#include "pdb/procedural_db.h"
#include "widgets/gimpdatafactoryview.h"
#include "pattern-select.h"
#include "libgimp/gimpintl.h"
#define MIN_CELL_SIZE 32
#define STD_PATTERN_COLUMNS 6
#define STD_PATTERN_ROWS 5
/* local function prototypes */
static void pattern_select_change_callbacks (PatternSelect *psp,
gboolean closing);
static void pattern_select_pattern_changed (GimpContext *context,
GimpPattern *pattern,
PatternSelect *psp);
static void pattern_select_close_callback (GtkWidget *widget,
gpointer data);
/* The main pattern selection dialog */
static PatternSelect *pattern_select_dialog = NULL;
/* List of active dialogs */
static GSList *pattern_active_dialogs = NULL;
GtkWidget *
pattern_dialog_create (Gimp *gimp)
{
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
if (! pattern_select_dialog)
{
pattern_select_dialog = pattern_select_new (gimp, NULL, NULL, NULL);
}
return pattern_select_dialog->shell;
}
void
pattern_dialog_free (void)
{
if (pattern_select_dialog)
{
pattern_select_free (pattern_select_dialog);
pattern_select_dialog = NULL;
}
}
/* If title == NULL then it is the main pattern dialog */
PatternSelect *
pattern_select_new (Gimp *gimp,
const gchar *title,
const gchar *initial_pattern,
const gchar *callback_name)
{
PatternSelect *psp;
GtkWidget *vbox;
GimpPattern *active = NULL;
static gboolean first_call = TRUE;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
psp = g_new0 (PatternSelect, 1);
psp->callback_name = g_strdup (callback_name);
/* The shell */
psp->shell = gimp_dialog_new (title ? title : _("Pattern Selection"),
"pattern_selection",
gimp_standard_help_func,
"dialogs/pattern_selection.html",
title ? GTK_WIN_POS_MOUSE : GTK_WIN_POS_NONE,
FALSE, TRUE, FALSE,
"_delete_event_", pattern_select_close_callback,
psp, NULL, NULL, TRUE, TRUE,
NULL);
gtk_dialog_set_has_separator (GTK_DIALOG (psp->shell), FALSE);
gtk_widget_hide (GTK_DIALOG (psp->shell)->action_area);
if (title)
{
psp->context = gimp_create_context (gimp, title, NULL);
}
else
{
psp->context = gimp_get_user_context (gimp);
}
if (gimp->no_data && first_call)
gimp_data_factory_data_init (gimp->pattern_factory, FALSE);
first_call = FALSE;
if (title && initial_pattern && strlen (initial_pattern))
{
active = (GimpPattern *)
gimp_container_get_child_by_name (gimp->pattern_factory->container,
initial_pattern);
}
else
{
active = gimp_context_get_pattern (gimp_get_user_context (gimp));
}
if (!active)
active = gimp_context_get_pattern (gimp_get_standard_context (gimp));
if (title)
gimp_context_set_pattern (psp->context, active);
/* The main vbox */
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 2);
gtk_container_add (GTK_CONTAINER (GTK_DIALOG (psp->shell)->vbox), vbox);
/* The Brush Grid */
psp->view = gimp_data_factory_view_new (GIMP_VIEW_TYPE_GRID,
gimp->pattern_factory,
NULL,
psp->context,
MIN_CELL_SIZE,
STD_PATTERN_COLUMNS,
STD_PATTERN_ROWS,
NULL);
gtk_box_pack_start (GTK_BOX (vbox), psp->view, TRUE, TRUE, 0);
gtk_widget_show (psp->view);
gtk_widget_show (vbox);
gtk_widget_show (psp->shell);
g_signal_connect (G_OBJECT (psp->context), "pattern_changed",
G_CALLBACK (pattern_select_pattern_changed),
psp);
/* Add to active pattern dialogs list */
pattern_active_dialogs = g_slist_append (pattern_active_dialogs, psp);
return psp;
}
void
pattern_select_free (PatternSelect *psp)
{
g_return_if_fail (psp != NULL);
gtk_widget_destroy (psp->shell);
/* remove from active list */
pattern_active_dialogs = g_slist_remove (pattern_active_dialogs, psp);
g_signal_handlers_disconnect_by_func (G_OBJECT (psp->context),
pattern_select_pattern_changed,
psp);
if (psp->callback_name)
{
g_free (psp->callback_name);
g_object_unref (G_OBJECT (psp->context));
}
g_free (psp);
}
/* Call this dialog's PDB callback */
static void
pattern_select_change_callbacks (PatternSelect *psp,
gboolean closing)
{
gchar *name;
ProcRecord *prec = NULL;
GimpPattern *pattern;
gint nreturn_vals;
static gboolean busy = FALSE;
/* Any procs registered to callback? */
Argument *return_vals;
if (!psp || !psp->callback_name || busy)
return;
busy = TRUE;
name = psp->callback_name;
pattern = gimp_context_get_pattern (psp->context);
/* If its still registered run it */
prec = procedural_db_lookup (psp->context->gimp, name);
if (prec && pattern)
{
return_vals =
procedural_db_run_proc (psp->context->gimp,
name,
&nreturn_vals,
GIMP_PDB_STRING, GIMP_OBJECT (pattern)->name,
GIMP_PDB_INT32, pattern->mask->width,
GIMP_PDB_INT32, pattern->mask->height,
GIMP_PDB_INT32, pattern->mask->bytes,
GIMP_PDB_INT32, (pattern->mask->bytes *
pattern->mask->height *
pattern->mask->width),
GIMP_PDB_INT8ARRAY, temp_buf_data (pattern->mask),
GIMP_PDB_INT32, (gint) closing,
GIMP_PDB_END);
if (!return_vals || return_vals[0].value.pdb_int != GIMP_PDB_SUCCESS)
g_warning ("failed to run pattern callback function");
procedural_db_destroy_args (return_vals, nreturn_vals);
}
busy = FALSE;
}
PatternSelect *
pattern_select_get_by_callback (const gchar *callback_name)
{
GSList *list;
PatternSelect *psp;
for (list = pattern_active_dialogs; list; list = g_slist_next (list))
{
psp = (PatternSelect *) list->data;
if (psp->callback_name && ! strcmp (callback_name, psp->callback_name))
return psp;
}
return NULL;
}
/* Close active dialogs that no longer have PDB registered for them */
void
pattern_select_dialogs_check (void)
{
PatternSelect *psp;
GSList *list;
gchar *name;
ProcRecord *prec = NULL;
list = pattern_active_dialogs;
while (list)
{
psp = (PatternSelect *) list->data;
list = g_slist_next (list);
name = psp->callback_name;
if (name)
{
prec = procedural_db_lookup (psp->context->gimp, name);
if (!prec)
{
/* Can alter pattern_active_dialogs list */
pattern_select_close_callback (NULL, psp);
}
}
}
}
/*
* Local functions
*/
static void
pattern_select_pattern_changed (GimpContext *context,
GimpPattern *pattern,
PatternSelect *psp)
{
if (pattern)
{
if (psp->callback_name)
pattern_select_change_callbacks (psp, FALSE);
}
}
static void
pattern_select_close_callback (GtkWidget *widget,
gpointer data)
{
PatternSelect *psp;
psp = (PatternSelect *) data;
if (GTK_WIDGET_VISIBLE (psp->shell))
gtk_widget_hide (psp->shell);
/* Free memory if poping down dialog which is not the main one */
if (psp != pattern_select_dialog)
{
/* Send data back */
pattern_select_change_callbacks (psp, TRUE);
pattern_select_free (psp);
}
}
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