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Merge pull request #41 from ZhengLinLei/feature_task_share_record
New Feature Share With Friends #39
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| // ================================================================================ | ||
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| // Github: https://github.com/hughsk/canvas-pixels | ||
| // | ||
| // Get Pixel amount in a 3D canvas | ||
| function getPixels3d(gl) { | ||
| var canvas = gl.canvas | ||
| var height = canvas.height | ||
| var width = canvas.width | ||
| var buffer = new Uint8Array(width * height * 4) | ||
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| gl.readPixels(0, 0 | ||
| , canvas.width | ||
| , canvas.height | ||
| , gl.RGBA | ||
| , gl.UNSIGNED_BYTE | ||
| , buffer | ||
| ); | ||
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| return buffer | ||
| } | ||
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| // Get Pixel amount in a 2D canvas | ||
| function getPixels2d(ctx) { | ||
| var canvas = ctx.canvas | ||
| var height = canvas.height | ||
| var width = canvas.width | ||
|
|
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| return ctx.getImageData(0, 0, width, height).data | ||
| } | ||
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| // ================================================================================ | ||
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| // WebGL to 2D CANVAS | ||
| // Github: https://github.com/Experience-Monks/webgl-to-canvas2d | ||
| const Webgl2canvas = (webgl, canvas2D) => { | ||
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| var outCanvas = canvas2D ? canvas2D.canvas || canvas2D : document.createElement('canvas'); | ||
| var outContext = outCanvas.getContext('2d'); | ||
| var outImageData; | ||
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| webgl = (webgl instanceof WebGLRenderingContext) ? webgl : (webgl.getContext('webgl2') || webgl.getContext('webgl') || webgl.getContext('experimental-webgl')); | ||
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| outCanvas.width = webgl.canvas.width; | ||
| outCanvas.height = webgl.canvas.height; | ||
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| outImageData = outContext.getImageData(0, 0, outCanvas.width, outCanvas.height); | ||
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| outImageData.data.set(new Uint8ClampedArray(getPixels3d(webgl).buffer)); | ||
| outContext.putImageData(outImageData, 0, 0); | ||
| outContext.translate(0, outCanvas.height); | ||
| outContext.scale(1, -1); | ||
| outContext.drawImage(outCanvas, 0, 0); | ||
| outContext.setTransform(1, 0, 0, 1, 0, 0); | ||
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| return outCanvas; | ||
| }; | ||
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| // ================================================================================ | ||
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| // Stackoverflow: https://stackoverflow.com/a/17906462 | ||
| // Stackoverflow: https://stackoverflow.com/questions/17906169/how-to-copy-from-one-canvas-to-other-canvas | ||
| // | ||
| // Convert WebGL Canvas to Image | ||
| // Canvas(WebGL) -> Canvas(2D){Do changes} -> Image(JPG, PNG) | ||
| const DrawCanvasCopy = (canvas, callback, callbackBlob) => { | ||
| let c = Webgl2canvas(canvas); | ||
| // Prepare new canvas | ||
| callback(c.getContext('2d')); | ||
| // Export | ||
| c.toBlob(callbackBlob); | ||
| // Delete | ||
| c.remove(); | ||
| } | ||
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| // ================================================================================ | ||
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| // Stackblock: https://stackoverflow.com/questions/68362603/share-image-via-social-media-from-pwa | ||
| // | ||
| // Convert blob to image share | ||
| const Blob2Share = async(blob) => { | ||
| if (!('share' in navigator) || !('canShare' in navigator)) { | ||
| return false; | ||
| } | ||
| const files = [new File([blob], 'newRecord.png', { type: blob.type })]; | ||
| const shareData = { | ||
| text: 'Play with me. In Stackblock.io', | ||
| title: 'Stackblock.io', | ||
| files, | ||
| }; | ||
| if (navigator.canShare(shareData)) { | ||
| try { | ||
| await navigator.share(shareData); | ||
| } catch (err) { | ||
| if (err.name !== 'AbortError') { | ||
| console.error(err.name, err.message); | ||
| return false; | ||
| } | ||
| } | ||
| } else { | ||
| console.warn('Sharing not supported', shareData); | ||
| return false; | ||
| } | ||
| }; | ||
|
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| const Blob2Download = (blob) => { | ||
| let a = document.createElement('a'); | ||
| let url = window.URL.createObjectURL(blob); | ||
| a.href = url; | ||
| a.download = "StackBlock_newRecord.png"; | ||
| a.click(); | ||
| window.URL.revokeObjectURL(url); | ||
| a.remove(); | ||
| } |
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