[cairo-commit] gtkcairo/tests Makefile.am,NONE,1.1 demo.c,NONE,1.1

[Carl Worth]

Committed by: cworth

Update of /cvs/cairo/gtkcairo/tests
In directory pdx:/tmp/cvs-serv6348/tests

Added Files:
	Makefile.am demo.c 
Log Message:
Initial import of gtkcairo (courtesy of Evan Martin <martine at danga.com>)

--- NEW FILE: Makefile.am ---
noinst_PROGRAMS = demo
 
demo_SOURCES = \
	demo.c

AM_CFLAGS = $(GTKCAIRO_CFLAGS)

demo_LDADD = $(GTKCAIRO_LIBS) $(top_srcdir)/gtkcairo/libgtkcairo.la


--- NEW FILE: demo.c ---
/* vim: set ts=4 sw=4 noet : */

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

#define ANIMATE_ROTATE_STEP 0.05
#define ANIMATE_FRAME_DELAY 40

#define ROTATE_MAX 6.28  /* 2*pi */

#define MARGIN 20
#define BOX_SIZE 100

static void
setup_transform(cairo_t *cairo) {
	cairo_default_matrix(cairo);
	cairo_translate(cairo, BOX_SIZE+MARGIN, BOX_SIZE+MARGIN);
}

static void
expose(GtkCairo *gtkcairo) {
	cairo_t *cairo = gtk_cairo_get_cairo(gtkcairo);

	cairo_rectangle (cairo, 0, 0, BOX_SIZE, BOX_SIZE);
	cairo_set_rgb_color (cairo, 1, 1, 1);
	cairo_fill (cairo);
}

static void
slider_changed(GtkRange *range, GtkCairo *gtkcairo) {
	cairo_t *cairo = gtk_cairo_get_cairo(gtkcairo);

	setup_transform(cairo);
	cairo_rotate(cairo, gtk_range_get_value(range));
	gtk_widget_queue_draw(GTK_WIDGET(gtkcairo));
}

static gboolean
animate_step(GtkRange *range) {
	double newval = gtk_range_get_value(range) + ANIMATE_ROTATE_STEP;
	if (newval > ROTATE_MAX) newval -= ROTATE_MAX;
	gtk_range_set_value(range, newval);
	return TRUE;
}

static void
animate_toggled(GtkToggleButton *tb, GtkRange *range) {
	static guint timerid = 0;
	gboolean active = gtk_toggle_button_get_active(tb);
	if (active && !timerid) {
		timerid = gtk_timeout_add(ANIMATE_FRAME_DELAY,
		                          (GtkFunction)animate_step, range);
	} else if (!active && timerid) {
		gtk_timeout_remove(timerid);
		timerid = 0;
	}
}

static void
show_test() {
	GtkWidget *win, *vbox, *frame, *gtkcairo, *slider, *animate;

	win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_title(GTK_WINDOW(win), "GtkCairo Demo");
	g_signal_connect(G_OBJECT(win), "delete-event",
	                 G_CALLBACK(gtk_main_quit), NULL);

	vbox = gtk_vbox_new(FALSE, 6);
	gtk_container_set_border_width(GTK_CONTAINER(vbox), 12);

	frame = gtk_frame_new(NULL);
	gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);

	gtkcairo = gtk_cairo_new();
	setup_transform(gtk_cairo_get_cairo(GTK_CAIRO(gtkcairo)));
	gtk_widget_set_usize(GTK_WIDGET(gtkcairo),
			2*(BOX_SIZE+MARGIN), 2*(BOX_SIZE+MARGIN));
	g_signal_connect_after(G_OBJECT(gtkcairo), "expose-event",
	                 G_CALLBACK(expose), NULL);

	gtk_container_add(GTK_CONTAINER(frame), gtkcairo);
	gtk_box_pack_start(GTK_BOX(vbox), frame, TRUE, TRUE, 0);

	slider = gtk_hscale_new_with_range(0, ROTATE_MAX, 0.05);
	gtk_scale_set_draw_value(GTK_SCALE(slider), FALSE);
	g_signal_connect(G_OBJECT(slider), "value-changed",
	                 G_CALLBACK(slider_changed), gtkcairo);
	gtk_box_pack_start(GTK_BOX(vbox), slider, FALSE, FALSE, 0);

	animate = gtk_check_button_new_with_label("Animate");
	g_signal_connect(G_OBJECT(animate), "toggled",
	                 G_CALLBACK(animate_toggled), slider);
	gtk_box_pack_start(GTK_BOX(vbox), animate, FALSE, FALSE, 0);
	
	gtk_container_add(GTK_CONTAINER(win), vbox);
	gtk_widget_show_all(vbox);

	gtk_widget_show(win);
}

int
main(int argc, char *argv[]) {
	gtk_init(&argc, &argv);
	show_test();
	gtk_main();

	return 0;
}