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Call drawPlaceholder when no tiles are drawn

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Philip Giuliani 2015-04-08 20:14:13 +02:00
parent fc56c4e2ef
commit 6778533642
1 changed files with 16 additions and 3 deletions
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19
src/tiledimage.js
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@ -1157,7 +1157,7 @@ function drawTiles( tiledImage, lastDrawn ){
position,
tileSource;
var usedClip = false;
var needsRestore = false;
if (tiledImage._clip) {
tiledImage._drawer.saveContext();
var box = tiledImage.imageToViewportRectangle(tiledImage._clip, true);
@ -1168,7 +1168,20 @@ function drawTiles( tiledImage, lastDrawn ){
size.x * $.pixelDensityRatio,
size.y * $.pixelDensityRatio);
tiledImage._drawer.setClip(box);
usedClip = true;
needsRestore = true;
}
if ( lastDrawn.length === 0 ) {
tiledImage._drawer.saveContext();
var box = tiledImage.getBounds(true);
var topLeft = tiledImage.viewport.pixelFromPoint(box.getTopLeft(), true);
var size = tiledImage.viewport.deltaPixelsFromPoints(box.getSize(), true);
box = new OpenSeadragon.Rect(topLeft.x * $.pixelDensityRatio,
topLeft.y * $.pixelDensityRatio,
size.x * $.pixelDensityRatio,
size.y * $.pixelDensityRatio);
tiledImage._drawer.drawPlaceholder(box);
needsRestore = true;
}
for ( i = lastDrawn.length - 1; i >= 0; i-- ) {
@ -1203,7 +1216,7 @@ function drawTiles( tiledImage, lastDrawn ){
}
}
if (usedClip) {
if ( needsRestore ) {
tiledImage._drawer.restoreContext();
}
}