Bugzilla – Full Text Bug Listing
| Summary: | [GTK] ImageLoader failed to save image when bytesPerLines is not multiple of image's width | ||||||||
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| Product: | [Eclipse Project] Platform | Reporter: | Arnaud de Muyser <arnaud.demuyser> | ||||||
| Component: | SWT | Assignee: | Platform-SWT-Inbox <platform-swt-inbox> | ||||||
| Status: | NEW --- | QA Contact: | |||||||
| Severity: | major | ||||||||
| Priority: | P3 | ||||||||
| Version: | 4.24 | ||||||||
| Target Milestone: | --- | ||||||||
| Hardware: | PC | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Attachments: |
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Created attachment 284455 [details]
original picture
Reproduced using Eclipse 4.26.0 using plugins: org.eclipse.swt_3.122.0.v20221123-2302.jar org.eclipse.swt.gtk.linux.x86_64_3.122.0.v20221123-2302.jar |
Created attachment 284454 [details] screenshot of snipet displaying loaded image, same image saved & reloaded Environment: Ubuntu 20.04.1 LTS (focal) eclipse: 2020_09 java: openjdk version "14.0.1" 2020-04-14 (also having issue with java-8-openjdk-amd64) swt: org.eclipse.swt_3.115.0.v20200831-1002.jar org.eclipse.swt.gtk.linux.x86_64_3.115.0.v20200831-1002.jar I can load colored images using ImageLoader.load() and display image data correctly, painting image data's on a canvas. When I save this image data (using JPEG or PNG format), image in file appears as black & white with pixel shift at each line. This occurs when image data's bytesPerLines = width * (depth/8) + N with N >= 1 (often 2). (note that ImageData.data.length = bytesPerLines * height) Original file can be loaded & correctly displayed using gimp, system' picture viewer, pngcheck report: OK: Andorre la Viella, série 5.png (786x560, 24-bit RGB, non-interlaced, 34.4%). on saved PNG file, pngcheck command reports: OK: Andorre la Viella, série 5.png (786x560, 32-bit RGB+alpha, non-interlaced, 41.1%). on saved jpeg, file commands reports: ndorre la Viella, série 5.jpg: JPEG image data, JFIF standard 1.01, aspect ratio, density 1x1, segment length 16, baseline, precision 8, 786x560, components 3