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Bug 716855 - [Page Thumbnails] Screenshots should contain the the top-left corner; r=dietrich

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This commit is contained in:
Tim Taubert 2012-01-26 11:35:24 +01:00
parent 744f201eee
commit 5e9346e34e
1 changed files with 10 additions and 17 deletions
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27
browser/components/thumbnails/PageThumbs.jsm
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@ -77,7 +77,7 @@ let PageThumbs = {
* @return The newly created canvas containing the image data.
*/
capture: function PageThumbs_capture(aWindow) {
let [sx, sy, sw, sh, scale] = this._determineCropRectangle(aWindow);
let [sw, sh, scale] = this._determineCropSize(aWindow);
let canvas = this._createCanvas();
let ctx = canvas.getContext("2d");
@ -87,7 +87,7 @@ let PageThumbs = {
try {
// Draw the window contents to the canvas.
ctx.drawWindow(aWindow, sx, sy, sw, sh, THUMBNAIL_BG_COLOR,
ctx.drawWindow(aWindow, 0, 0, sw, sh, THUMBNAIL_BG_COLOR,
ctx.DRAWWINDOW_DO_NOT_FLUSH);
} catch (e) {
// We couldn't draw to the canvas for some reason.
@ -152,14 +152,11 @@ let PageThumbs = {
},
/**
* Determines the crop rectangle for a given content window.
* Determines the crop size for a given content window.
* @param aWindow The content window.
* @return An array containing x, y, width, heigh and the scale of the crop
* rectangle.
* @return An array containing width, height and scale.
*/
_determineCropRectangle: function PageThumbs_determineCropRectangle(aWindow) {
let sx = 0;
let sy = 0;
_determineCropSize: function PageThumbs_determineCropSize(aWindow) {
let sw = aWindow.innerWidth;
let sh = aWindow.innerHeight;
@ -167,17 +164,13 @@ let PageThumbs = {
let scaledWidth = sw * scale;
let scaledHeight = sh * scale;
if (scaledHeight > THUMBNAIL_HEIGHT) {
sy = Math.floor(Math.abs((scaledHeight - THUMBNAIL_HEIGHT) / 2) / scale);
sh -= 2 * sy;
}
if (scaledHeight > THUMBNAIL_HEIGHT)
sh -= Math.floor(Math.abs(scaledHeight - THUMBNAIL_HEIGHT) * scale);
if (scaledWidth > THUMBNAIL_WIDTH) {
sx = Math.floor(Math.abs((scaledWidth - THUMBNAIL_WIDTH) / 2) / scale);
sw -= 2 * sx;
}
if (scaledWidth > THUMBNAIL_WIDTH)
sw -= Math.floor(Math.abs(scaledWidth - THUMBNAIL_WIDTH) * scale);
return [sx, sy, sw, sh, scale];
return [sw, sh, scale];
},
/**