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WinRT: cleaned up some hard-to-read SDL_DisplayMode management code

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This commit is contained in:
David Ludwig
2014-03-01 16:37:30 -05:00
parent f4a5a0fad1
commit 6687ece1d5
2 changed files with 46 additions and 38 deletions
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56
src/core/winrt/SDL_winrtapp_direct3d.cpp
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@@ -157,31 +157,39 @@ WINRT_ProcessWindowSizeChange()
// window-resize event as it appeared the SDL window didn't change
// size, and the Direct3D 11.1 renderer wouldn't resize its swap
// chain.
SDL_DisplayMode resizedDisplayMode;
if (WINRT_CalcDisplayModeUsingNativeWindow(&resizedDisplayMode) != 0) {
return;
}
if (resizedDisplayMode.w == 0 || resizedDisplayMode.h == 0) {
if (resizedDisplayMode.driverdata) {
SDL_free(resizedDisplayMode.driverdata);
}
SDL_DisplayMode newDisplayMode;
if (WINRT_CalcDisplayModeUsingNativeWindow(&newDisplayMode) != 0) {
return;
}
// Make note of the old display mode, and it's old driverdata.
SDL_DisplayMode oldDisplayMode;
SDL_zero(oldDisplayMode);
if (WINRT_GlobalSDLVideoDevice) {
oldDisplayMode = WINRT_GlobalSDLVideoDevice->displays[0].desktop_mode;
if (WINRT_DuplicateDisplayMode(&(WINRT_GlobalSDLVideoDevice->displays[0].desktop_mode), &resizedDisplayMode) != 0) {
SDL_free(resizedDisplayMode.driverdata);
}
// Setup the new display mode in the appropriate spots.
if (WINRT_GlobalSDLVideoDevice) {
// Make a full copy of the display mode for display_modes[0],
// one with with a separately malloced 'driverdata' field.
// SDL_VideoQuit(), if called, will attempt to free the driverdata
// fields in 'desktop_mode' and each entry in the 'display_modes'
// array.
if (WINRT_GlobalSDLVideoDevice->displays[0].display_modes[0].driverdata) {
// Free the previous mode's memory
SDL_free(WINRT_GlobalSDLVideoDevice->displays[0].display_modes[0].driverdata);
WINRT_GlobalSDLVideoDevice->displays[0].display_modes[0].driverdata = NULL;
}
if (WINRT_DuplicateDisplayMode(&(WINRT_GlobalSDLVideoDevice->displays[0].display_modes[0]), &newDisplayMode) != 0) {
// Uh oh, something went wrong. A malloc call probably failed.
SDL_free(newDisplayMode.driverdata);
return;
}
WINRT_GlobalSDLVideoDevice->displays[0].current_mode = resizedDisplayMode;
if (WINRT_GlobalSDLVideoDevice->displays[0].display_modes[0].driverdata) {
SDL_free(WINRT_GlobalSDLVideoDevice->displays[0].display_modes[0].driverdata);
}
WINRT_GlobalSDLVideoDevice->displays[0].display_modes[0] = resizedDisplayMode;
// Install 'newDisplayMode' into 'current_mode' and 'desktop_mode'.
WINRT_GlobalSDLVideoDevice->displays[0].current_mode = newDisplayMode;
WINRT_GlobalSDLVideoDevice->displays[0].desktop_mode = newDisplayMode;
}
if (WINRT_GlobalSDLWindow) {
@@ -189,8 +197,8 @@ WINRT_ProcessWindowSizeChange()
SDL_SendWindowEvent(
WINRT_GlobalSDLWindow,
SDL_WINDOWEVENT_RESIZED,
resizedDisplayMode.w,
resizedDisplayMode.h);
newDisplayMode.w,
newDisplayMode.h);
#if WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP
// HACK: On Windows Phone, make sure that orientation changes from
@@ -198,7 +206,7 @@ WINRT_ProcessWindowSizeChange()
// or vice-versa on either of those two, lead to the Direct3D renderer
// getting updated.
const DisplayOrientations oldOrientation = ((SDL_DisplayModeData *)oldDisplayMode.driverdata)->currentOrientation;
const DisplayOrientations newOrientation = ((SDL_DisplayModeData *)resizedDisplayMode.driverdata)->currentOrientation;
const DisplayOrientations newOrientation = ((SDL_DisplayModeData *)newDisplayMode.driverdata)->currentOrientation;
if ((oldOrientation == DisplayOrientations::Landscape && newOrientation == DisplayOrientations::LandscapeFlipped) ||
(oldOrientation == DisplayOrientations::LandscapeFlipped && newOrientation == DisplayOrientations::Landscape) ||
@@ -213,21 +221,23 @@ WINRT_ProcessWindowSizeChange()
// Make sure that the display/window size really didn't change. If
// it did, then a SDL_WINDOWEVENT_SIZE_CHANGED event got sent, and
// the Direct3D 11.1 renderer picked it up, presumably.
if (oldDisplayMode.w == resizedDisplayMode.w &&
oldDisplayMode.h == resizedDisplayMode.h)
if (oldDisplayMode.w == newDisplayMode.w &&
oldDisplayMode.h == newDisplayMode.h)
{
SDL_SendWindowEvent(
WINRT_GlobalSDLWindow,
SDL_WINDOWEVENT_SIZE_CHANGED,
resizedDisplayMode.w,
resizedDisplayMode.h);
newDisplayMode.w,
newDisplayMode.h);
}
}
#endif
}
// Finally, free the 'driverdata' field of the old 'desktop_mode'.
if (oldDisplayMode.driverdata) {
SDL_free(oldDisplayMode.driverdata);
oldDisplayMode.driverdata = NULL;
}
}