Deprecating Device#getDPI #2260
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Having the scale factor being based on the screen DPI leads to unexpected result e.g. Image too big/small. Having a screen dpi independent factor leads to consistent results
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Jun 25, 2025
akoch-yatta
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Jun 26, 2025
| Point printerDPI = printer.getDPI(); | ||
| int scaleFactor = printerDPI.x / screenDPI.x; | ||
| int scaleFactor = printerDPI.x / 100; |
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Wasn't Display:getDPI always returning 96?
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No, it depends on the display. Sometimes 144 or 96 or depending on the monitor. We then decided to use 100 as the base consistent value to calculate the scaleFactor like we did here: https://github.com/eclipse-platform/eclipse.platform.swt/pull/1802/files
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Having the scale factor being based on the screen DPI leads to unexpected result e.g. Image too big/small. Having a screen dpi independent factor leads to consistent results.