Sha256: 68f1de289a4faf8e18280ba61e460cb9f819c8e79f4db567c91fa7759791b83b
Contents?: true
Size: 1.91 KB
Versions: 6
Compression:
Stored size: 1.91 KB
Contents
pageflow.linkmapPage.ImageData = (function() {
function ImageData(width, height) {
var canvas = document.createElement('canvas');
this.width = width;
this.height = height;
canvas.width = width;
canvas.height = height;
this.loadImage = function(image) {
image.draw(canvas, {disableImageSmoothing: true});
};
this.draw = function(context, sx, sy, sw, sh, dx, dy, dw, dh) {
context.drawImage(canvas, sx, sy, sw, sh, dx, dy, dw, dh);
};
this.copyColorFrom = function(imageData, color, destinationX, destinationY) {
var data = imageData.data;
var destinationContext = canvas.getContext('2d');
for (var i = 0; i < data.length; i += 4) {
if (data[i] != color[0] ||
data[i + 1] != color[1] ||
data[i + 2] != color[2]) {
data[i + 3] = 0;
}
else {
data[i + 3] = 255;
}
}
destinationContext.putImageData(imageData, destinationX, destinationY);
};
this.getBoundingBox = function(box) {
return this.get(box.left, box.top, box.width, box.height);
};
this.get = function(left, top, width, height) {
var context = canvas.getContext('2d');
return context.getImageData(left, top, width, height);
};
this.toDataURL = function() {
var result = canvas.toDataURL();
if (!result.match(/^data:image/)) {
throw new invalidImageDataUrl();
}
return result;
};
}
function invalidImageDataUrl() {
var error = new Error('Invalid data url from canvas.');
error.i18nKey = 'pageflow.linkmap_page.errors.invalid_image_data';
return error;
}
ImageData.load = function(url) {
return pageflow.linkmapPage.RemoteImage.load(url).then(function(image) {
var imageData = new ImageData(image.width(), image.height());
imageData.loadImage(image);
return imageData;
});
};
return ImageData;
}());
Version data entries
6 entries across 6 versions & 1 rubygems