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DrawOnYourScreen
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third touchscreen support attempt #2

This commit is contained in:
abakkk 2019-03-24 17:28:25 +01:00
parent 2d315dd65c
commit 826249a0b3
1 changed files with 15 additions and 23 deletions
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38
draw.js
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@ -66,6 +66,7 @@ var DrawingArea = new Lang.Class({
this.undoneElements = [];
this.currentElement = null;
this.touchSequence = null;
this.device = null;
this.buttonPressed = false;
this.currentShape = Shapes.NONE;
this.isSquareArea = false;
@ -145,7 +146,9 @@ var DrawingArea = new Lang.Class({
if (this.touchSequence || this.buttonPressed)
return Clutter.EVENT_STOP;
this.device = event.get_device();
this.touchSequence = event.get_event_sequence();
this.device.sequence_grab(this.touchSequence, this);
return this._onBeginEvent(actor, event, 1);
},
@ -159,6 +162,7 @@ var DrawingArea = new Lang.Class({
},
_onBeginEvent: function(actor, event, button) {
imports.ui.main.notify("begin");
let [x, y] = event.get_coords();
let shiftPressed = event.has_shift_modifier();
@ -266,8 +270,6 @@ var DrawingArea = new Lang.Class({
this.motionHandler = this.connect('touch-event', (actor, event) => {
if (event.type() != Clutter.EventType.TOUCH_UPDATE)
return Clutter.EVENT_PROPAGATE;
if (event.get_event_sequence() != this.touchSequence)
return Clutter.EVENT_STOP;
return this._onMotionEvent(actor, event);
});
@ -275,8 +277,6 @@ var DrawingArea = new Lang.Class({
this.releaseHandler = this.connect('touch-event', (actor, event) => {
if (event.type() != Clutter.EventType.TOUCH_END && event.type() != Clutter.EventType.TOUCH_CANCEL)
return Clutter.EVENT_PROPAGATE;
if (event.get_event_sequence() != this.touchSequence)
return Clutter.EVENT_STOP;
this._stopDrawing();
return Clutter.EVENT_STOP;
@ -294,7 +294,7 @@ var DrawingArea = new Lang.Class({
return Clutter.EVENT_STOP;
},
_stopDrawing: function() {
_disconnectMotionAndReleaseHandlers: function() {
if (this.motionHandler) {
this.disconnect(this.motionHandler);
this.motionHandler = null;
@ -303,8 +303,16 @@ var DrawingArea = new Lang.Class({
this.disconnect(this.releaseHandler);
this.releaseHandler = null;
}
if (this.device && this.touchSequence) {
this.device.sequence_ungrab(this.touchSequence, this);
}
this.touchSequence = null;
this.device = null;
this.buttonPressed = false;
},
_stopDrawing: function() {
this._disconnectMotionAndReleaseHandlers();
// skip when the size is too small to be visible (3px) (except for free drawing)
if (this.currentElement && this.currentElement.points.length >= 2 &&
@ -378,14 +386,7 @@ var DrawingArea = new Lang.Class({
deleteLastElement: function() {
if (this.currentElement) {
if (this.motionHandler) {
this.disconnect(this.motionHandler);
this.motionHandler = null;
}
if (this.releaseHandler) {
this.disconnect(this.releaseHandler);
this.releaseHandler = null;
}
this._disconnectMotionAndReleaseHandlers();
this.currentElement = null;
this._stopCursorTimeout();
} else {
@ -520,6 +521,7 @@ var DrawingArea = new Lang.Class({
},
leaveDrawingMode: function(save) {
this._disconnectMotionAndReleaseHandlers();
if (this.keyPressedHandler) {
this.disconnect(this.keyPressedHandler);
this.keyPressedHandler = null;
@ -532,14 +534,6 @@ var DrawingArea = new Lang.Class({
this.disconnect(this.touchEventHandler);
this.touchEventHandler = null;
}
if (this.motionHandler) {
this.disconnect(this.motionHandler);
this.motionHandler = null;
}
if (this.releaseHandler) {
this.disconnect(this.releaseHandler);
this.releaseHandler = null;
}
if (this.scrollHandler) {
this.disconnect(this.scrollHandler);
this.scrollHandler = null;
@ -548,8 +542,6 @@ var DrawingArea = new Lang.Class({
if (this.helper.visible)
this.helper.hideHelp();
this.touchSequence = null;
this.buttonPressed = false;
this.currentElement = null;
this._stopCursorTimeout();
this.dashedLine = false;