Added display & monitor functions

allegro5/display.go

@@ -14,12 +14,11 @@ type Display struct {
 }
 
 type NewDisplayOptions struct {
-	Width      int
-	Height     int
 	Fullscreen bool
 	Resizable  bool
 	Windowed   bool
 	Maximized  bool
+	Frameless  bool
 }
 
 // NewDisplay creates a display
@@ -31,6 +30,8 @@ func NewDisplay(width, height int, options NewDisplayOptions) (*Display, error)
 		} else {
 			flags = C.ALLEGRO_FULLSCREEN
 		}
+	} else if options.Frameless {
+		flags |= C.ALLEGRO_FRAMELESS
 	}
 	if options.Resizable {
 		flags |= C.ALLEGRO_RESIZABLE
@@ -65,10 +66,22 @@ func (d *Display) Position() (int, int) {
 	return int(x), int(y)
 }
 
+func (d *Display) Resize(w, h int) {
+	C.al_resize_display(d.display, C.int(w), C.int(h))
+}
+
 func (d *Display) SetAsTarget() {
 	C.al_set_target_backbuffer(d.display)
 }
 
+func (d *Display) SetMousePosition(x, y int) {
+	C.al_set_mouse_xy(d.display, C.int(x), C.int(y))
+}
+
+func (d *Display) SetPosition(x, y int) {
+	C.al_set_window_position(d.display, C.int(x), C.int(y))
+}
+
 func (d *Display) SetWindowTitle(title string) {
 	t := C.CString(title)
 	defer C.free(unsafe.Pointer(t))

allegro5/monitor.go

@@ -0,0 +1,34 @@
+package allegro5
+
+// #include <allegro5/allegro.h>
+import "C"
+
+type Monitor struct {
+	X1, Y1 int
+	X2, Y2 int
+}
+
+func monitor(m *C.ALLEGRO_MONITOR_INFO) Monitor {
+	return Monitor{int(m.x1), int(m.y1), int(m.x2), int(m.y2)}
+}
+
+func DefaultMonitor() Monitor {
+	var m C.ALLEGRO_MONITOR_INFO
+	C.al_get_monitor_info(C.ALLEGRO_DEFAULT_DISPLAY_ADAPTER, &m)
+	return monitor(&m)
+}
+
+func Monitors() []Monitor {
+	var n = NumberOfVideoAdapters()
+	var mons []Monitor
+	var m C.ALLEGRO_MONITOR_INFO
+	for i := 0; i < n; i++ {
+		C.al_get_monitor_info(C.int(i), &m)
+		mons = append(mons, monitor(&m))
+	}
+	return mons
+}
+
+func NumberOfVideoAdapters() int {
+	return int(C.al_get_num_video_adapters())
+}