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Events in grouped object #2729

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Events in grouped object #2729

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asturur
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@asturur asturur commented Jan 10, 2016

Preliminary cleaning and test.

First i remove some duplicate calls of getPointer(e, true); We are passing event e, and in every function searching for the pointer from the event. While we can search pointer once and then just pass reference to it.

Then a nice logic to discern when we should go deep in the groups and when we should stop at first object is still needed.

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asturur commented Jan 11, 2016

it detects the object in groups and nested groups, but the mouse over and mouse out logic needs tweaks. i think we need to return an array of found target instead of a single target. The first one gets normal processing (selection, grouping...) , the others just fires mouse up, mouse down, mouse over, mouse out...

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asturur commented Jan 17, 2016

needed for testing

{"objects":[{"type":"group","originX":"left","originY":"top","left":160.02,"top":107,"width":216.49,"height":262,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"objects":[{"type":"circle","originX":"left","originY":"top","left":-62.27,"top":-31,"width":80,"height":80,"fill":"rgb(0,0,255)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":2,"angle":0,"flipX":false,"flipY":false,"opacity":0.5,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"radius":40,"startAngle":0,"endAngle":6.283185307179586},{"type":"rect","originX":"left","originY":"top","left":-62.27,"top":-131,"width":50,"height":50,"fill":"rgb(255,0,0)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"rx":0,"ry":0},{"type":"group","originX":"left","originY":"top","left":-37.77,"top":-131,"width":206.5,"height":99.67,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":45,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"objects":[{"type":"circle","originX":"left","originY":"top","left":22.25,"top":-49.83,"width":80,"height":80,"fill":"rgb(0,255,0)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":0.5,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":10,"radius":40,"startAngle":0,"endAngle":6.283185307179586},{"type":"rect","originX":"left","originY":"top","left":-77.75,"top":-19.83,"width":50,"height":50,"fill":"rgb(255,255,0)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":30,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"rx":0,"ry":0}]}]}],"background":""}
// clear canvas
canvas.clear();

// remove currently selected object
canvas.loadFromJSON({"objects":[{"type":"group","originX":"left","originY":"top","left":160.02,"top":107,"width":216.49,"height":262,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"objects":[{"type":"circle","originX":"left","originY":"top","left":-62.27,"top":-31,"width":80,"height":80,"fill":"rgb(0,0,255)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":2,"angle":0,"flipX":false,"flipY":false,"opacity":0.5,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"radius":40,"startAngle":0,"endAngle":6.283185307179586},{"type":"rect","originX":"left","originY":"top","left":-62.27,"top":-131,"width":50,"height":50,"fill":"rgb(255,0,0)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"rx":0,"ry":0},{"type":"group","originX":"left","originY":"top","left":-37.77,"top":-131,"width":206.5,"height":99.67,"fill":"rgb(0,0,0)","stroke":null,"strokeWidth":0,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":45,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"objects":[{"type":"circle","originX":"left","originY":"top","left":22.25,"top":-49.83,"width":80,"height":80,"fill":"rgb(0,255,0)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":0,"flipX":false,"flipY":false,"opacity":0.5,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":10,"radius":40,"startAngle":0,"endAngle":6.283185307179586},{"type":"rect","originX":"left","originY":"top","left":-77.75,"top":-19.83,"width":50,"height":50,"fill":"rgb(255,255,0)","stroke":null,"strokeWidth":1,"strokeDashArray":null,"strokeLineCap":"butt","strokeLineJoin":"miter","strokeMiterLimit":10,"scaleX":1,"scaleY":1,"angle":30,"flipX":false,"flipY":false,"opacity":1,"shadow":null,"visible":true,"clipTo":null,"backgroundColor":"","fillRule":"nonzero","globalCompositeOperation":"source-over","transformMatrix":null,"skewX":0,"skewY":0,"rx":0,"ry":0}]}]}],"background":""});
canvas.renderAll();

canvas._objects[0]._objects[0].hasBorders = true;
canvas._objects[0]._objects[0].hasControls = true;

canvas._objects[0]._objects[1].hasBorders = true;
canvas._objects[0]._objects[1].hasControls = true;

canvas._objects[0]._objects[2].hasBorders = true;
canvas._objects[0]._objects[2].hasControls = true;

canvas._objects[0]._objects[2]._objects[1].hasBorders = true;
canvas._objects[0]._objects[2]._objects[1].hasControls = true;

canvas._objects[0]._objects[2]._objects[0].hasBorders = true;
canvas._objects[0]._objects[2]._objects[0].hasControls = true;

canvas._objects[0]._objects[0].on('mousedown', function(e){ this.stroke = 'black'});
canvas._objects[0]._objects[1].on('mousedown', function(e){ this.stroke = 'black'});
canvas._objects[0]._objects[2]._objects[0].on('mousedown', function(e){this.stroke = 'black'});
canvas._objects[0]._objects[2]._objects[1].on('mousedown', function(e){this.stroke = 'black'});

canvas._objects[0]._objects[0].on('mouseup', function(e){ this.stroke = 'white'});
canvas._objects[0]._objects[1].on('mouseup', function(e){ this.stroke = 'white'});
canvas._objects[0]._objects[2]._objects[0].on('mouseup', function(e){this.stroke = 'white'});
canvas._objects[0]._objects[2]._objects[1].on('mouseup', function(e){this.stroke = 'white'});

@asturur
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asturur commented Jan 17, 2016

i left some question @kangax, if you can give some insight on existing code.

@@ -860,38 +858,37 @@
/**
* @private
*/
_isLastRenderedObject: function(e) {
_isLastRenderedObject: function(pointer) {
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this function is a shortcut to check last selected target before all. But why just with controls above overaly? i think it should be checked always.

@asturur
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asturur commented Jan 17, 2016

Also i have still to figure out mouse over and mouse out, but can be done. Also perPixelTargetFind needs some adjustment.

@VictorHagsand
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No update on this?

@asturur
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asturur commented Apr 27, 2016

I did not forget it.
I have to rebase on new code, but definitely pushing this forward.
It was done, just i need to check every shift click situations and transparency settings and DOCS.

@samuelhorwitz
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samuelhorwitz commented May 19, 2016

Hey, just a quick question. Would this update make it so that grouped objects can be manipulated individually? I have been working on a workaround for my own project in which I use a group subclass that can ungroup and regroup itself as needed so that objects can be manipulated on an individual level. However I feel like it's a bit messy. If the intent of this PR is to allow individual object manipulation, then I'll hold off on cleaning up my code and just wait for this to land so I can re-implement my stuff in a simpler fashion.

PS thanks for all the work on Fabric you've done, it's saved our team a bunch of time

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asturur commented May 19, 2016

no just event handling, click mouse over, mouse out
.. and so on. what you say could be next step. but not this

@samuelhorwitz
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Ah okay. Well it still seems like you've done the "hard part" unless I'm missing something. Once you can reliably target objects in a group the way you've done, it's just a small step from providing an interface that allows one to "drill down" to that object and allow current transforms to get setup on that object (while making sure that the group gets updated with every change to a child object). I have a massively subclassed version of Fabric running for my project (1000s of lines of Canvas and Object subclassing) but I think that implementing this via a subclass might not be the best approach. I'm going to look into taking this branch and adding what I'm talking about on top of it to see how it feels.

@@ -1293,3 +1292,4 @@
*/
fabric.Element = fabric.Canvas;
})();
s

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this should probably not be here :)

@asturur asturur mentioned this pull request May 22, 2016
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asturur commented May 22, 2016

check #2997

@asturur asturur closed this May 22, 2016
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3 participants