https://bugs.freedesktop.org/show_bug.cgi?id=76931
--- Comment #5 from [email protected] --- Actually I think the scaling algorithm is OK. IINW even with the best algorithm, we cannot avoid SOME amount of blurring when a raster image is scaled. So the trick is to project it at 100% in slide show mode, to eliminate any blurring. Now I do understand that this idea is not compatible with the full-screen projection, where the image will be necessarily magnified. But Impress offers a special slideshow mode in Windows. Here are the steps to experience what I mean: 1. First, start an odp file with a small page size (say A5). (This allows you to resize the window in a wider range to dramatically demonstrate my point.) 2. Take a screenshot and paste it in the odp file. Now we are ready for the experiment. Our aim is to reproduce a crisp screenshot even in the slideshow mode. 3. Select the "Slideshow >Slide show settings..." menu option. 4. In the dialog that pops up, go to the "Type" section (in the middle), and select the "Window" radio button. Click OK. 5. Now close the panes on both sides, so that only the main window remains visible. This will allow us to see the effect properly. 6. Press F5 to start the slideshow. The screenshot will be rendered in the window. 7. Change the Impress window size and see the effect on the crispness of the screenshot. We see that the screenshot is crisp when it is rendered at its original size (100%). This is seen only at a particular size of the window. As we make the window smaller or larger, the screenshot becomes blurred progressively. I carried out the above experiment, and took screenshots of what I see. I posted those screenshots just before writing this message. Note that I used the window slideshow mode just because I can vary the magnification of the projected slide by changing the window size. But my suggestion is NOT limited to "slideshow in window" mode. I would like to have a slideshow option where the projection is locked to 100%. It may be in full-screen mode or window mode. * In full-screen mode, the projection would be in center, and the outer areas on all sides would be left blank * In windows mode, Impress would decide the window size that gives 100% magnification (which means the user cannot control it) -- You are receiving this mail because: You are the assignee for the bug.
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