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/* This file extracted from the GTK tutorial. */
/* rulers.c */
#include <gtk/gtk.h>
#define EVENT_METHOD(i, x) GTK_WIDGET_CLASS(GTK_OBJECT(i)->klass)->x
#define XSIZE 600
#define YSIZE 400
/* this routine gets control when the close button is clicked
*/
void close_application( GtkWidget *widget, GdkEvent *event, gpointer *data ) {
gtk_main_quit();
}
/* the main routine
*/
int main( int argc, char *argv[] ) {
GtkWidget *window, *table, *area, *hrule, *vrule;
/* initialize gtk and create the main window */
gtk_init( &argc, &argv );
window = gtk_window_new( GTK_WINDOW_TOPLEVEL );
gtk_signal_connect (GTK_OBJECT (window), "delete_event",
GTK_SIGNAL_FUNC( close_application ), NULL);
gtk_container_border_width (GTK_CONTAINER (window), 10);
/* create a table for placing the ruler and the drawing area */
table = gtk_table_new( 3, 2, FALSE );
gtk_container_add( GTK_CONTAINER(window), table );
area = gtk_drawing_area_new();
gtk_drawing_area_size( (GtkDrawingArea *)area, XSIZE, YSIZE );
gtk_table_attach( GTK_TABLE(table), area, 1, 2, 1, 2,
GTK_EXPAND|GTK_FILL, GTK_FILL, 0, 0 );
gtk_widget_set_events( area, GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK );
/* The horizontal ruler goes on top. As the mouse moves across the drawing area,
a motion_notify_event is passed to the appropriate event handler for the ruler. */
hrule = gtk_hruler_new();
gtk_ruler_set_metric( GTK_RULER(hrule), GTK_PIXELS );
gtk_ruler_set_range( GTK_RULER(hrule), 7, 13, 0, 20 );
gtk_signal_connect_object( GTK_OBJECT(area), "motion_notify_event",
(GtkSignalFunc)EVENT_METHOD(hrule, motion_notify_event),
GTK_OBJECT(hrule) );
/* GTK_WIDGET_CLASS(GTK_OBJECT(hrule)->klass)->motion_notify_event, */
gtk_table_attach( GTK_TABLE(table), hrule, 1, 2, 0, 1,
GTK_EXPAND|GTK_SHRINK|GTK_FILL, GTK_FILL, 0, 0 );
/* The vertical ruler goes on the left. As the mouse moves across the drawing area,
a motion_notify_event is passed to the appropriate event handler for the ruler. */
vrule = gtk_vruler_new();
gtk_ruler_set_metric( GTK_RULER(vrule), GTK_PIXELS );
gtk_ruler_set_range( GTK_RULER(vrule), 0, YSIZE, 10, YSIZE );
gtk_signal_connect_object( GTK_OBJECT(area), "motion_notify_event",
(GtkSignalFunc)
GTK_WIDGET_CLASS(GTK_OBJECT(vrule)->klass)->motion_notify_event,
GTK_OBJECT(vrule) );
gtk_table_attach( GTK_TABLE(table), vrule, 0, 1, 1, 2,
GTK_FILL, GTK_EXPAND|GTK_SHRINK|GTK_FILL, 0, 0 );
/* now show everything */
gtk_widget_show( area );
gtk_widget_show( hrule );
gtk_widget_show( vrule );
gtk_widget_show( table );
gtk_widget_show( window );
gtk_main();
return 0;
}
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