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Fix : Hide grid when zoom no longer allows proper display

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This commit is contained in:
jdescottes 2015-09-19 00:07:14 +02:00
parent d17f235aee
commit 1bc85bfbca
1 changed files with 16 additions and 4 deletions
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20
src/js/rendering/frame/FrameRenderer.js
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@ -140,11 +140,23 @@
};
ns.FrameRenderer.prototype.getGridWidth = function () {
if (this.supportGridRendering) {
return this.gridWidth_;
} else {
if (!this.supportGridRendering) {
return 0;
}
return this.gridWidth_;
};
/**
* Compute a grid width value best suited to the current display context,
* particularly for the current zoom level
*/
ns.FrameRenderer.prototype.computeGridWidthForDisplay_ = function () {
var gridWidth = this.getGridWidth();
while (this.zoom < 6 * gridWidth) {
gridWidth--;
}
return gridWidth;
};
ns.FrameRenderer.prototype.updateMargins_ = function (frame) {
@ -249,7 +261,7 @@
var isIE10 = pskl.utils.UserAgent.isIE && pskl.utils.UserAgent.version === 10;
var gridWidth = this.getGridWidth();
var gridWidth = this.computeGridWidthForDisplay_();
var isGridEnabled = gridWidth > 0;
if (isGridEnabled || isIE10) {
var scaled = pskl.utils.ImageResizer.resizeNearestNeighbour(this.canvas, this.zoom, gridWidth);