78 lines
2.9 KiB
C
78 lines
2.9 KiB
C
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#include <gtk/gtk.h>
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#define EVENT_METHOD(i, x) GTK_WIDGET_GET_CLASS(i)->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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static gboolean close_application( GtkWidget *widget,
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GdkEvent *event,
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gpointer data )
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{
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gtk_main_quit ();
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return FALSE;
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}
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/* The main routine */
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int main( int argc,
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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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g_signal_connect (window, "delete-event",
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G_CALLBACK (close_application), NULL);
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gtk_container_set_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_widget_set_size_request (GTK_WIDGET (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 |
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GDK_POINTER_MOTION_HINT_MASK);
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/* The horizontal ruler goes on top. As the mouse moves across the
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* drawing area, a motion_notify_event is passed to the
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* appropriate event handler for the ruler. */
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hrule = gtk_ruler_new (GTK_ORIENTATION_HORIZONTAL);
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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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g_signal_connect_swapped (area, "motion-notify-event",
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G_CALLBACK (EVENT_METHOD (hrule,
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motion_notify_event)),
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hrule);
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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
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* the drawing area, a motion_notify_event is passed to the
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* appropriate event handler for the ruler. */
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vrule = gtk_ruler_new (GTK_ORIENTATION_VERTICAL);
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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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g_signal_connect_swapped (area, "motion-notify-event",
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G_CALLBACK (EVENT_METHOD (vrule,
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motion_notify_event)),
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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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