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fixing image width and height bug in resources

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This commit is contained in:
Danny Yoo 2012-01-17 12:38:33 -05:00
parent 4aed984bb8
commit 3881e0c085
2 changed files with 25 additions and 10 deletions
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4
examples/iron-puzzle/iron-puzzle.rkt
View File

@ -19,6 +19,8 @@
distorted-image
(image-width distorted-image)
(image-height distorted-image)
;; We will want to decompose the image into its individual pixels. We can use
;; image->color-list to do this.
@ -60,3 +62,5 @@ dark-image
;; the landmark.
red-eye-image
(image-width red-eye-image)
(image-height red-eye-image)

25
resource/specialize/js-impl.js
View File

@ -31,10 +31,10 @@ var isImagePath = function(s) {
// A lot of this comes from image/private/kernel.js
var injectImageMethods = function(r, img) {
var injectImageMethods = function(r, img, after) {
r.img = img;
r.getHeight = function() { return img.width; };
r.getWidth = function() { return img.height; };
r.getWidth = function() { return img.width; };
r.getHeight = function() { return img.height; };
r.getBaseline = function() { return img.height; };
r.updatePinhole = function() {
var aCopy = plt.baselib.clone(this);
@ -43,20 +43,29 @@ var injectImageMethods = function(r, img) {
return aCopy;
};
r.render = function(ctx, x, y) {
installHackToSupportAnimatedGifs(r);
ctx.drawImage(r.animationHackImg, x, y);
};
r.toDomNode = function(params) {
return img.cloneNode(true);
};
installHackToSupportAnimatedGifs(r, after);
};
var installHackToSupportAnimatedGifs = function(r) {
if (r.animationHackImg) { return; }
var installHackToSupportAnimatedGifs = function(r, after) {
r.animationHackImg = r.img.cloneNode(true);
document.body.appendChild(r.animationHackImg);
r.animationHackImg.width = 0;
r.animationHackImg.height = 0;
if (r.animationHackImg.complete) {
after();
} else {
r.animationHackImg.onload = function() {
delete (r.animationHackImg.onload);
after();
};
}
};
@ -79,11 +88,13 @@ EXPORTS['specialize!'] = makeClosure(
rawImage.onload = function() {
delete(rawImage.onload);
delete(rawImage.onerror);
injectImageMethods(resource, rawImage);
var after = function() {
restart(function(MACHINE) {
return finalizeClosureCall(MACHINE, resource);
});
};
injectImageMethods(resource, rawImage, after);
};
rawImage.onerror = function(e) {
delete(rawImage.onload);
delete(rawImage.onerror);