Merge branch 'georeith-true-resize-canvas'

This commit is contained in:
Jürg Lehni 2014-12-30 00:14:58 +01:00
commit ac9c3f03c4
2 changed files with 44 additions and 45 deletions

View file

@ -68,13 +68,17 @@ var CanvasView = View.extend(/** @lends CanvasView# */{
// Upscale the canvas if the two ratios don't match. // Upscale the canvas if the two ratios don't match.
element.width = width * pixelRatio; element.width = width * pixelRatio;
element.height = height * pixelRatio; element.height = height * pixelRatio;
if (pixelRatio !== 1) { if (pixelRatio !== 1) {
style.width = width + 'px'; // If the canvas is resizable then don't override it otherwise
style.height = height + 'px'; // give it fixed dimensions so it doesn't get resized.
// Now scale the context to counter the fact that we've manually if (this._resizable === false) {
// scaled our canvas element. style.width = width + 'px';
this._context.scale(pixelRatio, pixelRatio); style.height = height + 'px';
} }
// Now scale the context to counter the fact that we've manually
// scaled our canvas element.
this._context.scale(pixelRatio, pixelRatio);
}
}, },
/** /**

View file

@ -52,48 +52,43 @@ var View = Base.extend(Emitter, /** @lends View# */{
userDrag: none, userDrag: none,
tapHighlightColor: 'rgba(0,0,0,0)' tapHighlightColor: 'rgba(0,0,0,0)'
}); });
// If the element has the resize attribute, resize the it to fill the
// window and resize it again whenever the user resizes the window. var getCanvasSize = function() {
if (PaperScope.hasAttribute(element, 'resize')) { // Try visible size first, since that will help handling previously
// Subtract element' viewport offset from the total size, to // scaled canvases (e.g. when dealing with pixel-ratio)
// stretch it in size = DomElement.getSize(element);
var offset = DomElement.getOffset(element, true), if (size.isNaN() || size.isZero()) {
that = this; // If the element is invisible, we cannot directly access
size = DomElement.getViewportBounds(element) // element.width / height, because they would appear 0.
.getSize().subtract(offset); // Reading the attributes should still work.
this._windowEvents = { var getSize = function(name) {
resize: function() { return element[name]
// Only update element offset if it's not invisible, as || parseInt(element.getAttribute(name), 10);
// otherwise the offset would be wrong. };
if (!DomElement.isInvisible(element)) size = new Size(getSize('width'), getSize('height'));
offset = DomElement.getOffset(element, true); }
// Set the size now, which internally calls onResize return size;
// and redraws the view };
that.setViewSize(DomElement.getViewportBounds(element)
.getSize().subtract(offset)); // If the element has the resize attribute, listen to resize events and
} // update its coordinate space accordingly
}; this._resizable = PaperScope.hasAttribute(element, 'resize');
DomEvent.add(window, this._windowEvents); if (this._resizable) {
} else { var that = this;
// Try visible size first, since that will help handling previously this._windowEvents = {
// scaled canvases (e.g. when dealing with pixel-ratio) resize: function() {
size = DomElement.getSize(element); // setViewSize is aware of a resizable canvas and only updates the
if (size.isNaN() || size.isZero()) { // coordinate space based on the physical dimensions and pixel ratio
// If the element is invisible, we cannot directly access that.setViewSize(getCanvasSize());
// element.width / height, because they would appear 0. }
// Reading the attributes should still work. };
var getSize = function(name) { DomEvent.add(window, this._windowEvents);
return element[name] }
|| parseInt(element.getAttribute(name), 10);
};
size = new Size(getSize('width'), getSize('height'));
}
}
// Set canvas size even if we just deterined the size from it, since // Set canvas size even if we just deterined the size from it, since
// it might have been set to a % size, in which case it would use some // it might have been set to a % size, in which case it would use some
// default internal size (300x150 on WebKit) and scale up the pixels. // default internal size (300x150 on WebKit) and scale up the pixels.
// We also need this call here for HiDPI support. // We also need this call here for HiDPI support.
this._setViewSize(size); this._setViewSize(getCanvasSize());
// TODO: Test this on IE: // TODO: Test this on IE:
if (PaperScope.hasAttribute(element, 'stats') if (PaperScope.hasAttribute(element, 'stats')
&& typeof Stats !== 'undefined') { && typeof Stats !== 'undefined') {