96 lines
3.4 KiB
Haxe
96 lines
3.4 KiB
Haxe
package kha.input;
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/** See `Surface.setTouchDownEventBlockBehavior` */
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enum TouchDownEventBlockBehavior {
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Full;
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None;
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Custom(func: (event: Dynamic) -> Bool);
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}
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@:allow(kha.SystemImpl)
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@:expose
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class Surface {
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static var touchDownEventBlockBehavior = TouchDownEventBlockBehavior.Full;
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/**
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* Get current Surface.
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* @param num (optional) surface id (0 by default).
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*/
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public static function get(num: Int = 0): Surface {
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if (num != 0)
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return null;
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return instance;
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}
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/**
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* Allows fine grained control of touch down browser default actions (html5 only).
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* @param behavior can be:
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* Full - block touch down events.
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* None - do not block touch down events.
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* Custom(func:(event:TouchEvent)->Bool) - set custom handler for touch down event (should return true if touch down event blocked).
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*/
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public static function setTouchDownEventBlockBehavior(behavior: TouchDownEventBlockBehavior): Void {
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touchDownEventBlockBehavior = behavior;
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}
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/**
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* Creates event handlers from passed functions.
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* @param touchStartListener (optional) function with `id:Int`,`x:Int`,`y:Int` arguments, fired when a surface is pressed down. The finger `id` goes from 0 increasing by one. When the finger releases the screen, the old `id` is freed up and will be occupied with pressing the next finger (when releasing a finger, the shift of ids does not occur).
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* @param touchEndListener (optional) function with `id:Int`,`x:Int`,`y:Int` arguments, fired when a surface is released.
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* @param moveListener (optional) function with `id:Int`,`x:Int`,`y:Int` arguments, fired when a surface is moved.
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*/
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public function notify(?touchStartListener: (id: Int, x: Int, y: Int) -> Void, ?touchEndListener: (id: Int, x: Int, y: Int) -> Void,
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?moveListener: (id: Int, x: Int, y: Int) -> Void): Void {
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if (touchStartListener != null)
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touchStartListeners.push(touchStartListener);
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if (touchEndListener != null)
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touchEndListeners.push(touchEndListener);
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if (moveListener != null)
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moveListeners.push(moveListener);
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}
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/**
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* Removes event handlers from the passed functions that were passed to `notify` function.
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*/
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public function remove(?touchStartListener: (id: Int, x: Int, y: Int) -> Void, ?touchEndListener: (id: Int, x: Int, y: Int) -> Void,
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?moveListener: (id: Int, x: Int, y: Int) -> Void): Void {
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if (touchStartListener != null)
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touchStartListeners.remove(touchStartListener);
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if (touchEndListener != null)
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touchEndListeners.remove(touchEndListener);
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if (moveListener != null)
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moveListeners.remove(moveListener);
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}
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static var instance: Surface;
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var touchStartListeners: Array<Int->Int->Int->Void>;
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var touchEndListeners: Array<Int->Int->Int->Void>;
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var moveListeners: Array<Int->Int->Int->Void>;
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function new() {
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touchStartListeners = new Array<Int->Int->Int->Void>();
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touchEndListeners = new Array<Int->Int->Int->Void>();
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moveListeners = new Array<Int->Int->Int->Void>();
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instance = this;
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}
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function sendTouchStartEvent(index: Int, x: Int, y: Int): Void {
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for (listener in touchStartListeners) {
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listener(index, x, y);
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}
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}
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function sendTouchEndEvent(index: Int, x: Int, y: Int): Void {
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for (listener in touchEndListeners) {
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listener(index, x, y);
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}
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}
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function sendMoveEvent(index: Int, x: Int, y: Int): Void {
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for (listener in moveListeners) {
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listener(index, x, y);
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}
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}
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}
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