gstreamer/editor/gsteditorpalette.c

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <gnome.h>
#include <gst/gst.h>
#include <sys/stat.h>
#include <unistd.h>
#include "gsteditorpalette.h"
#include "gsteditorimage.h"
/* class functions */
static void gst_editor_palette_class_init(GstEditorPaletteClass *klass);
static void gst_editor_palette_init(GstEditorPalette *palette);
static void gst_editor_palette_set_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_palette_get_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_palette_make(GstEditorPalette *palette);
struct _palette_entry {
gchar *tooltip;
GtkType (*type) (void);
gchar *factoryname;
};
#define CORE_ELEMENT_SIZE 3
struct _palette_entry _palette_contents_core[CORE_ELEMENT_SIZE] = {
{"Bin", gst_bin_get_type, "bin" },
{"Thread", gst_thread_get_type, "thread" },
{"Pipeline", gst_pipeline_get_type, "pipeline" },
};
enum {
ARG_0,
};
enum {
SIGNAL_ELEMENT_SELECTED,
SIGNAL_IN_SELECTION_MODE,
LAST_SIGNAL
};
static GtkObjectClass *parent_class;
static guint gst_editor_palette_signals[LAST_SIGNAL] = { 0 };
GtkType
gst_editor_palette_get_type (void)
{
static GtkType palette_type = 0;
if (!palette_type) {
static const GtkTypeInfo palette_info = {
"GstEditorPalette",
sizeof(GstEditorPalette),
sizeof(GstEditorPaletteClass),
(GtkClassInitFunc)gst_editor_palette_class_init,
(GtkObjectInitFunc)gst_editor_palette_init,
NULL,
NULL,
(GtkClassInitFunc)NULL,
};
palette_type = gtk_type_unique(gtk_object_get_type(),&palette_info);
}
return palette_type;
}
static void
gst_editor_palette_class_init (GstEditorPaletteClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass*)klass;
parent_class = gtk_type_class(gtk_object_get_type());
gst_editor_palette_signals[SIGNAL_ELEMENT_SELECTED] =
gtk_signal_new("element_selected",GTK_RUN_FIRST,object_class->type,
GTK_SIGNAL_OFFSET(GstEditorPaletteClass,element_selected),
gtk_marshal_NONE__INT,GTK_TYPE_NONE,1,
GTK_TYPE_INT);
gst_editor_palette_signals[SIGNAL_IN_SELECTION_MODE] =
gtk_signal_new("in_selection_mode",GTK_RUN_FIRST,object_class->type,
GTK_SIGNAL_OFFSET(GstEditorPaletteClass,in_selection_mode),
gtk_marshal_NONE__INT,GTK_TYPE_NONE,1,
GTK_TYPE_INT);
gtk_object_class_add_signals(object_class,gst_editor_palette_signals,LAST_SIGNAL);
object_class->set_arg = gst_editor_palette_set_arg;
object_class->get_arg = gst_editor_palette_get_arg;
}
static void
gst_editor_palette_init (GstEditorPalette *palette)
{
palette->tooltips = gtk_tooltips_new();
}
typedef struct {
GstEditorPalette *palette;
GModule *symbols;
} connect_struct;
/* we need more control here so... */
static void
gst_editor_palette_connect_func (const gchar *handler_name,
GtkObject *object,
const gchar *signal_name,
const gchar *signal_data,
GtkObject *connect_object,
gboolean after,
gpointer user_data)
{
GtkSignalFunc func;
connect_struct *data = (connect_struct *)user_data;
if (!g_module_symbol(data->symbols, handler_name, (gpointer *)&func))
g_warning("gsteditorpalette: could not find signal handler '%s'.", handler_name);
else {
if (after)
gtk_signal_connect_after(object, signal_name, func, (gpointer) data->palette);
else
gtk_signal_connect(object, signal_name, func, (gpointer) data->palette);
}
}
GstEditorPalette*
gst_editor_palette_new()
{
GstEditorPalette *palette;
GtkWidget *palette_window;
connect_struct data;
GModule *symbols;
struct stat statbuf;
palette = GST_EDITOR_PALETTE(gtk_type_new(GST_TYPE_EDITOR_PALETTE));
symbols = g_module_open(NULL, 0);
data.palette = palette;
data.symbols = symbols;
if (stat(DATADIR"editor.glade", &statbuf) == 0) {
palette->xml = glade_xml_new(DATADIR"editor.glade", "palette_window");
}
else {
palette->xml = glade_xml_new ("editor.glade", "palette_window");
}
g_assert (palette->xml != NULL);
glade_xml_signal_autoconnect_full (palette->xml, gst_editor_palette_connect_func, &data);
palette_window = glade_xml_get_widget(palette->xml, "palette_window");
gtk_widget_show(palette_window);
palette->table = gtk_table_new(1, 4, TRUE);
gst_editor_palette_make(palette);
return palette;
}
typedef struct {
GstEditorPalette *palette;
struct _palette_entry *entry;
} _signal_data;
static void
gst_editor_palette_element_clicked(GtkButton *button, _signal_data *data)
{
GstElementFactory *factory;
factory = gst_elementfactory_find (data->entry->factoryname);
gtk_signal_emit(GTK_OBJECT(data->palette),gst_editor_palette_signals[SIGNAL_ELEMENT_SELECTED], factory);
}
static void
gst_editor_palette_make (GstEditorPalette *palette)
{
GtkWidget *button;
GstEditorImage *editimage;
GtkWidget *image;
GtkWidget *vbox;
gint i, x, y;
_signal_data *data;
x=0;
y=0;
vbox = glade_xml_get_widget(palette->xml, "palette_vbox");
gtk_box_pack_start(GTK_BOX(vbox), palette->table, FALSE, TRUE, 0);
for (i=0; i<CORE_ELEMENT_SIZE; i++) {
button = gtk_button_new();
gtk_button_set_relief(GTK_BUTTON(button), GTK_RELIEF_NONE);
editimage = gst_editor_image_get_for_type(_palette_contents_core[i].type());
image = gtk_pixmap_new(editimage->pixmap, editimage->bitmap);
gtk_container_add(GTK_CONTAINER(button), image);
gtk_widget_show(image);
gtk_table_attach(GTK_TABLE(palette->table), button, x, x+1, y, y+1, 0, 0, 0, 0);
gtk_widget_show(palette->table);
data = g_new0(_signal_data, 1);
data->palette = palette;
data->entry = &_palette_contents_core[i];
gtk_signal_connect(GTK_OBJECT(button), "clicked", gst_editor_palette_element_clicked, data);
gtk_tooltips_set_tip(palette->tooltips, button, _palette_contents_core[i].tooltip, NULL);
gtk_widget_show(button);
x++;
if (x==4) {
x=0;
y++;
}
}
}
static void
gst_editor_palette_set_arg (GtkObject *object,GtkArg *arg,guint id)
{
GstEditorPalette *palette;
/* get the major types of this object */
palette = GST_EDITOR_PALETTE(object);
switch (id) {
default:
g_warning("gsteditorpalette: unknown arg!");
break;
}
}
static void
gst_editor_palette_get_arg (GtkObject *object,GtkArg *arg,guint id)
{
GstEditorPalette *palette;
/* get the major types of this object */
palette = GST_EDITOR_PALETTE(object);
switch (id) {
default:
arg->type = GTK_TYPE_INVALID;
break;
}
}