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Fix crash and improve tests..

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This commit is contained in:
Antoine Vandecreme 2016-02-24 19:48:11 -05:00
parent 7e3320c167
commit d18485844d
2 changed files with 26 additions and 16 deletions
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12
src/tiledimage.js
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@ -1329,13 +1329,11 @@ function compareTiles( previousBest, tile ) {
}
function drawTiles( tiledImage, lastDrawn ) {
var i,
tile = lastDrawn[0];
if ( tiledImage.opacity <= 0 ) {
drawDebugInfo( tiledImage, lastDrawn );
if (lastDrawn.length === 0) {
return;
}
var tile = lastDrawn[0];
var useSketch = tiledImage.opacity < 1 ||
(tiledImage.compositeOperation &&
tiledImage.compositeOperation !== 'source-over') ||
@ -1346,7 +1344,7 @@ function drawTiles( tiledImage, lastDrawn ) {
var zoom = tiledImage.viewport.getZoom(true);
var imageZoom = tiledImage.viewportToImageZoom(zoom);
if (imageZoom > tiledImage.smoothTileEdgesMinZoom && tile) {
if (imageZoom > tiledImage.smoothTileEdgesMinZoom) {
// When zoomed in a lot (>100%) the tile edges are visible.
// So we have to composite them at ~100% and scale them up together.
useSketch = true;
@ -1403,7 +1401,7 @@ function drawTiles( tiledImage, lastDrawn ) {
tiledImage._drawer.drawRectangle(placeholderRect, fillStyle, useSketch);
}
for ( i = lastDrawn.length - 1; i >= 0; i-- ) {
for (var i = lastDrawn.length - 1; i >= 0; i--) {
tile = lastDrawn[ i ];
tiledImage._drawer.drawTile( tile, tiledImage._drawingHandler, useSketch, sketchScale, sketchTranslate );
tile.beingDrawn = true;

30
test/modules/multi-image.js
View File

@ -214,7 +214,13 @@
// TODO: replace with fully-loaded event listener when available.
setTimeout(function() {
var imageData = viewer.drawer.context.getImageData(0, 0, 500, 500);
var expectedVal = getPixelValue(imageData, 333, 250);
// Pixel 250,250 will be in the hole of the A
var expectedVal = getPixelValue(imageData, 250, 250);
notEqual(expectedVal.r, 0, 'Red channel should not be 0');
notEqual(expectedVal.g, 0, 'Green channel should not be 0');
notEqual(expectedVal.b, 0, 'Blue channel should not be 0');
notEqual(expectedVal.a, 0, 'Alpha channel should not be 0');
viewer.addSimpleImage({
url: '/test/data/A.png'
@ -223,23 +229,29 @@
// TODO: replace with fully-loaded event listener when available.
setTimeout(function() {
var imageData = viewer.drawer.context.getImageData(0, 0, 500, 500);
var actualVal = getPixelValue(imageData, 333, 250);
var actualVal = getPixelValue(imageData, 250, 250);
equal(actualVal.r, expectedVal.r,
'Red channel should not change when stacking a transparent image');
'Red channel should not change in transparent part of the A');
equal(actualVal.g, expectedVal.g,
'Green channel should not change when stacking a transparent image');
'Green channel should not change in transparent part of the A');
equal(actualVal.b, expectedVal.b,
'Blue channel should not change when stacking a transparent image');
'Blue channel should not change in transparent part of the A');
equal(actualVal.a, expectedVal.a,
'Alpha channel should not change when stacking a transparent image');
'Alpha channel should not change in transparent part of the A');
var onAVal = getPixelValue(imageData, 333, 250);
equal(onAVal.r, 0, 'Red channel should be null on the A');
equal(onAVal.g, 0, 'Green channel should be null on the A');
equal(onAVal.b, 0, 'Blue channel should be null on the A');
equal(onAVal.a, 255, 'Alpha channel should be 255 on the A');
start();
}, 1000);
}, 1000);
}, 500);
}, 500);
function getPixelValue(imageData, x, y) {
var offset = x * imageData.width + y;
var offset = 4 * (y * imageData.width + x);
return {
r: imageData.data[offset],
g: imageData.data[offset + 1],