diff options
Diffstat (limited to 'example/gesture.c')
| -rw-r--r-- | example/gesture.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/example/gesture.c b/example/gesture.c deleted file mode 100644 index 22bbd8b..0000000 --- a/example/gesture.c +++ /dev/null @@ -1,176 +0,0 @@ -#include <stdlib.h> -#include <string.h> -#include <signal.h> - -#include "idogesturemanager.h" - -static gint rotate = 0; -static gdouble scale = 1.0; -static gdouble translate[2] = { 200, 200 }; -static gint in_touch = 0; - -static gboolean -expose_event (GtkWidget *widget, - GdkEventExpose *event, - gpointer data) -{ - cairo_t *cr; - gdouble radians; - gint width = (in_touch > 0) ? 10 : 1; - - cr = gdk_cairo_create (widget->window); - - cairo_set_source_rgb (cr, 0, 0, 0); - cairo_set_line_width (cr, width); - - radians = rotate * (G_PI / 180); - cairo_translate (cr, translate[0], translate[1]); - cairo_scale (cr, scale, scale); - cairo_rotate (cr, radians); - - cairo_rectangle (cr, -50, -50, 100, 100); - cairo_stroke_preserve (cr); - cairo_set_source_rgb (cr, 1, 0, 1); - cairo_fill (cr); - - cairo_destroy (cr); - - return FALSE; -} - -GtkWidget * -create_window (void) -{ - GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL); - GtkWidget *da; - const GdkColor white = { 0, 0xffff, 0xffff, 0xffff }; - - gtk_window_set_title (GTK_WINDOW (window), "Touch Demo"); - gtk_window_set_default_size (GTK_WINDOW (window), 600, 600); - g_signal_connect (window, "destroy", G_CALLBACK (gtk_widget_destroyed), &window); - - da = gtk_drawing_area_new (); - gtk_container_add (GTK_CONTAINER (window), da); - - gtk_widget_modify_bg (da, GTK_STATE_NORMAL, &white); - - g_signal_connect (da, "expose-event", - G_CALLBACK (expose_event), NULL); - - return window; -} - -static void -gesture_start (GtkWindow *window, - IdoGestureEvent *event) -{ - in_touch++; - - gtk_widget_queue_draw (GTK_WIDGET (window)); -} - -static void -gesture_end (GtkWindow *window, - IdoGestureEvent *event) -{ - in_touch--; - - gtk_widget_queue_draw (GTK_WIDGET (window)); -} - -static void -rotate_update (GtkWindow *window, - IdoGestureEvent *event) -{ - IdoEventGestureRotate *e = (IdoEventGestureRotate *)event; - - rotate += e->angle_delta * 100; - - gtk_widget_queue_draw (GTK_WIDGET (window)); -} - -static void -pinch_update (GtkWindow *window, - IdoGestureEvent *event) -{ - IdoEventGesturePinch *e = (IdoEventGesturePinch *)event; - - scale += e->radius_delta / 100; - - gtk_widget_queue_draw (GTK_WIDGET (window)); -} - -static void -drag_update (GtkWindow *window, - IdoGestureEvent *event) -{ - IdoEventGestureDrag *e = (IdoEventGestureDrag *)event; - - translate[0] += e->delta_x; - translate[1] += e->delta_y; - - gtk_widget_queue_draw (GTK_WIDGET (window)); -} - -static void -window_mapped (GtkWidget *widget) -{ - IdoGestureManager *manager = ido_gesture_manager_get (); - GtkWindow *window = GTK_WINDOW (widget); - - ido_gesture_manager_register_window (manager, - window, - IDO_GESTURE_PINCH, - 2, - gesture_start, - pinch_update, - gesture_end); - - ido_gesture_manager_register_window (manager, - window, - IDO_GESTURE_ROTATE, - 2, - gesture_start, - rotate_update, - gesture_end); - - ido_gesture_manager_register_window (manager, - window, - IDO_GESTURE_DRAG, - 2, - gesture_start, - drag_update, - gesture_end); -} - -static void -abort_handler (int x) -{ - g_print (" **** ABORT ****\n"); - - exit (1); -} - -int -main (int argc, char **argv) -{ - GtkWidget *window; - - gtk_init (&argc, &argv); - - /* Don't crash X if we're using some shitty Intel graphics like - * my Dell XT2 has in it. */ - signal (SIGABRT, abort_handler); - - window = create_window (); - - g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit), NULL); - g_signal_connect (window, "map-event", G_CALLBACK (window_mapped), NULL); - - gtk_widget_show_all (window); - - gtk_main (); - - return 0; -} - |