gstreamer/editor/gsteditorprojectview.c

/* 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 <glade/glade.h>
#include "gsteditorproject.h"
#include "gsteditorpalette.h"
#include "gsteditorproperty.h"
#include "gsteditorimage.h"

/* class functions */
static void gst_editor_project_view_class_init(GstEditorProjectViewClass *klass);
static void gst_editor_project_view_init(GstEditorProjectView *project_view);
static void gst_editor_project_view_set_arg(GtkObject *object,GtkArg *arg,guint id);
static void gst_editor_project_view_get_arg(GtkObject *object,GtkArg *arg,guint id);

enum {
  ARG_0,
};

enum {
  LAST_SIGNAL
};

static GtkObjectClass *parent_class;
//static guint gst_editor_project_view_signals[LAST_SIGNAL] = { 0 };

GtkType gst_editor_project_view_get_type() {
  static GtkType project_view_type = 0;

  if (!project_view_type) {
    static const GtkTypeInfo project_view_info = {
      "GstEditorProjectView",
      sizeof(GstEditorProjectView),
      sizeof(GstEditorProjectViewClass),
      (GtkClassInitFunc)gst_editor_project_view_class_init,
      (GtkObjectInitFunc)gst_editor_project_view_init,
      NULL,
      NULL,
      (GtkClassInitFunc)NULL,
    };
    project_view_type = gtk_type_unique(gtk_object_get_type(),&project_view_info);
  }
  return project_view_type;
}

static void gst_editor_project_view_class_init(GstEditorProjectViewClass *klass) {
  GtkObjectClass *object_class;

  object_class = (GtkObjectClass*)klass;

  parent_class = gtk_type_class(gtk_object_get_type());

  object_class->set_arg = gst_editor_project_view_set_arg;
  object_class->get_arg = gst_editor_project_view_get_arg;
}

static void gst_editor_project_view_init(GstEditorProjectView *project) {
}

typedef struct {
  GstEditorProject *project;
  GModule *symbols;
} connect_struct;
  
/* we need more control here so... */
static void gst_editor_project_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("GstEditorProject: could not find signal handler '%s'.", handler_name);
  else {
    if (after)
      gtk_signal_connect_after(object, signal_name, func, (gpointer) data->project);
    else
      gtk_signal_connect(object, signal_name, func, (gpointer) data->project);
  }
}

static void gst_editor_project_element_selected(GstEditorProjectView *view, GtkType type, GstEditorPalette *palette) {
  GstElement *element;

  element = gtk_type_new(type);

  g_return_if_fail(element != NULL);
  g_return_if_fail(GST_IS_ELEMENT(element));

  gst_editor_project_add_toplevel_element(view->project, element);
}

static void on_name_change(GstEditorProjectView *view, GstEditorElement *element, GstEditor *editor) {
  gint row;
  gchar *text;
  guint8 spacing;
  GdkPixmap *pixmap;
  GdkBitmap *mask;

  row = gtk_clist_find_row_from_data(GTK_CLIST(view->list), editor);

  gtk_clist_get_pixtext(GTK_CLIST(view->list), row, 0, &text, &spacing, &pixmap, &mask);
  gtk_clist_set_pixtext(GTK_CLIST(view->list), row, 0, gst_editor_get_name(editor), 
		  spacing, pixmap, mask);
}

static void view_on_element_added(GstEditorProjectView *view, GstElement *element) {
  gchar *name;
  gint row;
  GstEditorImage *image;
  GstEditor *editor;

  image = gst_editor_image_get_for_type(GTK_OBJECT_TYPE(element));
  name = gst_element_get_name(element);
  row = gtk_clist_append(GTK_CLIST(view->list), &name);
  editor =  gst_editor_new(element);

  gtk_signal_connect_object(GTK_OBJECT(editor), "name_changed", on_name_change, GTK_OBJECT(view));
  gtk_clist_set_row_data(GTK_CLIST(view->list), row, editor);
  gtk_clist_set_pixtext(GTK_CLIST(view->list), row, 0, name, 3, image->pixmap, image->bitmap);
}

GstEditorProjectView *gst_editor_project_view_new(GstEditorProject *project) {
  GstEditorProjectView *view;
  GtkWidget *main_window;
  connect_struct data;
  GModule *symbols;
  GstEditorPalette *palette;

  view = GST_EDITOR_PROJECT_VIEW(gtk_type_new(GST_TYPE_EDITOR_PROJECT_VIEW));

  view->project = project;

  symbols = g_module_open(NULL, 0);

  data.project = project;
  data.symbols = symbols;

  view->xml = glade_xml_new("editor.glade", "main_project_window");
  glade_xml_signal_autoconnect_full (view->xml, gst_editor_project_connect_func, &data);

  gtk_signal_connect_object(GTK_OBJECT(project), "element_added", view_on_element_added, GTK_OBJECT(view));

  main_window = glade_xml_get_widget(view->xml, "main_project_window");
  gtk_widget_show(main_window);

  palette = gst_editor_palette_new();
  gtk_signal_connect_object(GTK_OBJECT(palette), "element_selected", gst_editor_project_element_selected, GTK_OBJECT(view));

  view->list = glade_xml_get_widget(view->xml, "clist1");
  gtk_clist_set_row_height(GTK_CLIST(view->list), 21);

  gst_editor_property_get();

  return view;
}

static void gst_editor_project_view_set_arg(GtkObject *object,GtkArg *arg,guint id) {
  GstEditorProjectView *project_view;

  /* get the major types of this object */
  project_view = GST_EDITOR_PROJECT_VIEW(object);

  switch (id) {
    default:
      g_warning("gsteditorproject_view: unknown arg!");
      break;
  }
}

static void gst_editor_project_view_get_arg(GtkObject *object,GtkArg *arg,guint id) {
  GstEditorProjectView *project_view;

  /* get the major types of this object */
  project_view = GST_EDITOR_PROJECT_VIEW(object);

  switch (id) {
    default:
      arg->type = GTK_TYPE_INVALID;
      break;
  }
}