Container performance

[digicapt - gtk dev <gtk digicapt ch>]

I'm using GTK+2.0.21 on a Fedora Core 6 and I need to create containers with a
lot of widgets.

If you try following code, you'll see that filling a container with 4000
entries (first button) is about 20 times slower than filling a container with
4000 labels (second button) : 1 seconds for labels on my PC, 20 seconds for
the edits.

Note you have to restart application between tests.

Can somebody tell me if there is a way to get the same performance with
entries ? I would even be glad with a twice slower performance :)

Regards,
Blaise




#include <stdio.h>
#include <gtk/gtk.h>


GtkWindow		*frame;
GtkBox			*framelayout;
GtkScrolledWindow	*panel; 


void buttonGridClick(GtkButton *i_button,
		     gpointer i_data);
void buttonGridLabelClick(GtkButton *i_button,
			  gpointer i_data);
void buttonBoxClick(GtkButton *i_button,
		    gpointer i_data);


int main(int argc,
	 char *argv[]) {

  GtkViewport		*viewport;
  GtkButton		*buttongrid; 
  GtkButton		*buttongridlabel;
  GtkButton		*buttonbox;


  gtk_init(&argc,
	   &argv);

  // Frame
  frame = (GtkWindow *) gtk_window_new(GTK_WINDOW_TOPLEVEL);
  gtk_widget_set_usize((GtkWidget *) frame,
		       400, 600);
  gtk_window_set_policy((GtkWindow *) frame, 
			true, true, false);

  framelayout = (GtkBox *) gtk_vbox_new(false, 0);
  gtk_container_add((GtkContainer *) frame,
		    (GtkWidget *) framelayout);
  gtk_widget_show((GtkWidget *) framelayout);

  // Button grid
  buttongrid = (GtkButton *) gtk_button_new_with_label("Add 1000 * 4 items as
grid");
  gtk_widget_set_usize((GtkWidget *) buttongrid,
		       -1, -1);

  gtk_box_pack_start(framelayout,
		     (GtkWidget *) buttongrid,
		     false, false,
		     0);
  gtk_widget_show((GtkWidget *) buttongrid);

  // Button grid label
  buttongridlabel = (GtkButton *) gtk_button_new_with_label("Add 1000 * 4
labels as grid");
  gtk_widget_set_usize((GtkWidget *) buttongridlabel,
		       -1, -1);

  gtk_box_pack_start(framelayout,
		     (GtkWidget *) buttongridlabel,
		     false, false,
		     0);
  gtk_widget_show((GtkWidget *) buttongridlabel);

  // Button box
  buttonbox = (GtkButton *) gtk_button_new_with_label("Add 1000 * 4 items as
box");
  gtk_widget_set_usize((GtkWidget *) buttonbox,
		       -1, -1);

  gtk_box_pack_start(framelayout,
		     (GtkWidget *) buttonbox,
		     false, false,
		     0);
  gtk_widget_show((GtkWidget *) buttonbox);

  // Panel
  panel = (GtkScrolledWindow *) gtk_scrolled_window_new(NULL, NULL);
  gtk_widget_set_usize((GtkWidget *) panel,
		       -1, -1);
  gtk_scrolled_window_set_policy(panel,
				 GTK_POLICY_AUTOMATIC,
				 GTK_POLICY_AUTOMATIC);
  ///gtk_container_set_reallocate_redraws((GtkContainer *) panel, true);
  //viewport = (GtkViewport *) gtk_bin_get_child((GtkBin *) panel);
  //gtk_viewport_set_shadow_type(viewport, GTK_SHADOW_OUT);
  gtk_widget_show((GtkWidget *) panel);

  gtk_box_pack_start(framelayout,
		     (GtkWidget *) panel,
		     true, true,
		     0);



  // Button event
  gtk_signal_connect((GtkObject *) buttongrid,
		     "clicked",
		     GTK_SIGNAL_FUNC(buttonGridClick),
		     NULL);
  gtk_signal_connect((GtkObject *) buttongridlabel,
		     "clicked",
		     GTK_SIGNAL_FUNC(buttonGridLabelClick),
		     NULL);
  gtk_signal_connect((GtkObject *) buttonbox,
		     "clicked",
		     GTK_SIGNAL_FUNC(buttonBoxClick),
		     NULL);

  // Show frame
  gtk_widget_show((GtkWidget *) frame);
  gtk_main();
}







/*
 * Event - buttons
 */
void buttonGridClick(GtkButton *i_button,
		     gpointer i_data) {
  GtkTable		*layout;
  GtkEntry		*edit;
  int			i;
  int			j;

  layout = (GtkTable *) gtk_table_new(4, 1000, false);
  gtk_scrolled_window_add_with_viewport(panel,
					(GtkWidget *) layout);
  gtk_widget_show((GtkWidget *) layout);


  for (i = 0 ; i < 1000 ; i++)
    for (j = 0 ; j < 4 ; j++) {
      edit = (GtkEntry *) gtk_entry_new();
      gtk_table_attach(layout,
		       (GtkWidget *) edit,
		       j, j + 1,
		       i, i + 1,
		       (GtkAttachOptions) 0,
		       (GtkAttachOptions) 0,
		       0, 0);
      gtk_widget_show((GtkWidget *) edit);
    }
}







/*
 * Event - buttons
 */
void buttonGridLabelClick(GtkButton *i_button,
			  gpointer i_data) {
  GtkTable		*layout;
  GtkLabel		*label;
  int			i;
  int			j;

  layout = (GtkTable *) gtk_table_new(4, 1000, false);
  gtk_scrolled_window_add_with_viewport(panel,
					(GtkWidget *) layout);
  gtk_widget_show((GtkWidget *) layout);


  for (i = 0 ; i < 1000 ; i++)
    for (j = 0 ; j < 4 ; j++) {
      label = (GtkLabel *) gtk_label_new("TEST");
      gtk_table_attach(layout,
		       (GtkWidget *) label,
		       j, j + 1,
		       i, i + 1,
		       (GtkAttachOptions) 0,
		       (GtkAttachOptions) 0,
		       0, 0);
      gtk_widget_show((GtkWidget *) label);
    }
}







/*
 * Event - buttons
 */
void buttonBoxClick(GtkButton *i_button,
		    gpointer i_data) {
  GtkBox		*rowlayout;
  GtkBox		*collayout;  
  GtkEntry		*edit;
  int			i;
  int			j;

  rowlayout = (GtkBox *) gtk_vbox_new(false, 0);
  gtk_scrolled_window_add_with_viewport(panel,
					(GtkWidget *) rowlayout);
  gtk_widget_show((GtkWidget *) rowlayout);


  for (i = 0 ; i < 1000 ; i++) {
    collayout = (GtkBox *) gtk_hbox_new(false, 0);
    gtk_box_pack_start(rowlayout,
		       (GtkWidget *) collayout,
		       false, false,
		       0);
    gtk_widget_show((GtkWidget *) collayout);

    
    for (j = 0 ; j < 4 ; j++) {
      edit = (GtkEntry *) gtk_entry_new();
      gtk_widget_set_usize((GtkWidget *) edit,
			   50, 24);
      gtk_box_pack_start(collayout,
			 (GtkWidget *) edit,
			 false, false,
			 0);
      gtk_widget_show((GtkWidget *) edit);
    }
  }
}