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Improve comment about EXPOSED event

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krcroft 2020-03-28 20:42:17 -07:00 • committed by Patryk Obara
parent c2b3015839
commit 619742f70f
1 changed files with 8 additions and 1 deletions
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9
src/gui/sdlmain.cpp
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@ -2208,7 +2208,14 @@ void GFX_Events() {
case SDL_WINDOWEVENT_RESIZED:
GFX_HandleVideoResize(event.window.data1, event.window.data2);
continue;
// window has been exposed and needs to be redrawn
/*
* EXPOSED indicates that the window needs to be redrawn.
* Note that on Windows/Linux-X11/Wayland/macOS, the EXPOSED event
* is fired after toggling between full vs windowed modes. However this is
* never fired on the Raspberry Pi (when rendering to the Framebuffer);
* therefore we rely on the FOCUS_GAINED event to catch window startup
* and size toggles.
*/
case SDL_WINDOWEVENT_EXPOSED:
if (sdl.draw.callback)
sdl.draw.callback(GFX_CallBackRedraw);