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author | Michael Lando <ml636r@att.com> | 2017-06-09 03:19:04 +0300 |
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committer | Michael Lando <ml636r@att.com> | 2017-06-09 03:19:04 +0300 |
commit | ed64b5edff15e702493df21aa3230b81593e6133 (patch) | |
tree | a4cb01fdaccc34930a8db403a3097c0d1e40914b /catalog-ui/src/app/directives/graphs-v2/image-creator | |
parent | 280f8015d06af1f41a3ef12e8300801c7a5e0d54 (diff) |
[SDC-29] catalog 1707 rebase commit.
Change-Id: I43c3dc5cf44abf5da817649bc738938a3e8388c1
Signed-off-by: Michael Lando <ml636r@att.com>
Diffstat (limited to 'catalog-ui/src/app/directives/graphs-v2/image-creator')
-rw-r--r-- | catalog-ui/src/app/directives/graphs-v2/image-creator/image-creator.service.ts | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/catalog-ui/src/app/directives/graphs-v2/image-creator/image-creator.service.ts b/catalog-ui/src/app/directives/graphs-v2/image-creator/image-creator.service.ts new file mode 100644 index 0000000000..1bafb2f32b --- /dev/null +++ b/catalog-ui/src/app/directives/graphs-v2/image-creator/image-creator.service.ts @@ -0,0 +1,45 @@ +'use strict'; +export class ImageCreatorService { + static '$inject' = ['$q']; + private _canvas:HTMLCanvasElement; + + constructor(private $q:ng.IQService) { + this._canvas = <HTMLCanvasElement>$('<canvas>')[0]; + this._canvas.setAttribute('style', 'display:none'); + + let body = document.getElementsByTagName('body')[0]; + body.appendChild(this._canvas); + } + + getImageBase64(imageBaseUri:string, imageLayerUri:string):ng.IPromise<string> { + let deferred = this.$q.defer(); + let imageBase = new Image(); + let imageLayer = new Image(); + let imagesLoaded = 0; + let onImageLoaded = () => { + imagesLoaded++; + + if (imagesLoaded < 2) { + return; + } + this._canvas.setAttribute('width', imageBase.width.toString()); + this._canvas.setAttribute('height', imageBase.height.toString()); + + let canvasCtx = this._canvas.getContext('2d'); + canvasCtx.clearRect(0, 0, this._canvas.width, this._canvas.height); + + canvasCtx.drawImage(imageBase, 0, 0, imageBase.width, imageBase.height); + canvasCtx.drawImage(imageLayer, imageBase.width - imageLayer.width, 0, imageLayer.width, imageLayer.height); + + let base64Image = this._canvas.toDataURL(); + deferred.resolve(base64Image); + }; + + imageBase.onload = onImageLoaded; + imageLayer.onload = onImageLoaded; + imageBase.src = imageBaseUri; + imageLayer.src = imageLayerUri; + + return deferred.promise; + } +} |