On Fri, Nov 30, 2018 at 09:56:12PM +0100, Радомир Хаџић via gtk-app-devel-list wrote: > I use poppler_page_find_text() to find text in PDF files. This returns > GList of pointers to PopplerRectangles. Then I use > poppler_page_render_selection() to mark the found text. > > What is wrong is that PopplerRectangles returned by > poppler_page_find_text() are incompatible with those that > poppler_page_render_selection() requests, which is why the wrong text > is selected. > > I have found that to make those two compatible, I have to do the > following to PopplerRectangles returned by poppler_page_find_text(): > 1) SWAP(rectangle.x1, rectangle.x2); > 2) SWAP(rectangle.y1, rectangle.y2); > 3) rectangle.y1 = page_height - rectangle.y1; > 4) rectangle.y2 = page_height - rectangle.y2; > But this does not solve the problem because the marked text cycles > between right and wrong again while resizing the window.
> is: https://pastebin.com/h3F56Yv7 You're doing in-place coordinate conversions in your drawing code. Every expose event will change the coordinates event, which is why you're seeing the flip-flopping. Do the conversion only once, or use a local temporary PopplerRectangle variable and avoid in-place conversions. (I'm not familiar with poppler's APIs and cannot say if your conversion code is correct.) HTH, Marius Gedminas -- Lutetium is the heaviest and hardest of the rare earth metals, and is used in the production of umlauts and other fraktur font features. -- Charles Stross
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