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use Jimp as fallback when GraphicsMagick isn't installed (#10)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,108 @@ | ||
| import gm from 'gm'; | ||
| import fsExtra from 'fs-promise'; | ||
| import path from 'path'; | ||
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| import generateUUID from '../generateUUID'; | ||
| import CropDimension from '../CropDimension'; | ||
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| const tmpDir = path.join(__dirname, '../../../.tmp'); | ||
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| /** | ||
| * Crops an image | ||
| * @param {string} base64Screenshot image to crop | ||
| * @param {CropDimension} cropDimensions dimensions | ||
| * @return {string} cropped image | ||
| */ | ||
| export async function cropImage(base64Screenshot, cropDimensions) { | ||
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| if (!(cropDimensions instanceof CropDimension )) { | ||
| throw new Error('Please provide a valid instance of CropDimension!'); | ||
| } | ||
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| const image = gm(new Buffer(base64Screenshot, 'base64')) | ||
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| if (cropDimensions.getRotation() !== 0) { | ||
| image.rotate('white', cropDimensions.getRotation()); | ||
| } | ||
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| image.gravity(cropDimensions.getGravity()); | ||
| image.crop(cropDimensions.getWidth(), cropDimensions.getHeight(), cropDimensions.getX(), cropDimensions.getY()); | ||
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| return new Promise((resolve, reject) => { | ||
| image.toBuffer('PNG',function (err, buffer) { | ||
| if (err) { | ||
| return reject(err); | ||
| } | ||
| return resolve(buffer.toString('base64')); | ||
| }) | ||
| }); | ||
| } | ||
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| /** | ||
| * Merges mulidimensional array of images to a single image: | ||
| * @param {string[][]} images array of images | ||
| * @return {string} screenshot | ||
| */ | ||
| export async function mergeImages(images) { | ||
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| const uuid = generateUUID(); | ||
| const dir = path.join(tmpDir, uuid); | ||
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| try { | ||
| await fsExtra.ensureDir(dir); | ||
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| // merge all horizintal screens | ||
| const rowImagesPromises = images.map(((colImages, key) => { | ||
| const firstImage = colImages.shift(); | ||
| const rowImage = gm(firstImage); | ||
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| if (colImages.length) { | ||
| colImages.push(true); | ||
| rowImage.append.apply(rowImage, colImages); | ||
| } | ||
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| return new Promise((resolve, reject) => { | ||
| const file = path.join(dir, `${key}.png`); | ||
| rowImage.write(file, function (err) { | ||
| if (err) { | ||
| return reject(err); | ||
| } | ||
| return resolve(file); | ||
| }); | ||
| }); | ||
| })); | ||
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| // merge all vertical screens | ||
| const base64Screenshot = await Promise | ||
| .all(rowImagesPromises) | ||
| .then((rowImages) => { | ||
| const firstImage = rowImages.shift(); | ||
| const mergedImage = gm(firstImage); | ||
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| if (rowImages.length) { | ||
| mergedImage.append.apply(mergedImage, rowImages); | ||
| } | ||
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| return new Promise((resolve, reject) => { | ||
| mergedImage.toBuffer('PNG',function (err, buffer) { | ||
| if (err) { | ||
| return reject(err); | ||
| } | ||
| return resolve(buffer.toString('base64')); | ||
| }); | ||
| }); | ||
| }); | ||
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| await fsExtra.remove(dir); | ||
| return base64Screenshot; | ||
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| } catch (e) { | ||
| try { | ||
| await fsExtra.remove(dir); | ||
| } catch(e) {} | ||
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| throw e; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| import * as jimp from './jimp'; | ||
| import * as gm from './gm'; | ||
| import which from 'which'; | ||
| import debug from 'debug'; | ||
| const log = debug('wdio-screenshot:image'); | ||
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| let gmInstalled = false; | ||
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| try { | ||
| gmInstalled = !!which.sync('gm'); | ||
| } catch(e) {} | ||
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| log(`Use image processing library: ${gmInstalled ? 'GraphicsMagick' : 'Jimp'}`); | ||
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| const { cropImage, mergeImages } = gmInstalled ? gm : jimp; | ||
| export { cropImage, mergeImages }; |
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