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