824b9b0a58
This function wasn't consistently correct across platforms and devices. If you want the UI scale factor, you can use display_scale in the structure returned by SDL_GetDesktopDisplayMode(). If you need an approximate DPI, you can multiply this value times 160 on iPhone and Android, and 96 on other platforms.
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifndef SDL_windowsmodes_h_
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#define SDL_windowsmodes_h_
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struct SDL_DisplayData
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{
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WCHAR DeviceName[32];
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HMONITOR MonitorHandle;
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SDL_bool IsValid;
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SDL_Rect bounds;
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};
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struct SDL_DisplayModeData
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{
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DEVMODE DeviceMode;
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};
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extern int WIN_InitModes(_THIS);
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extern int WIN_GetDisplayBounds(_THIS, SDL_VideoDisplay *display, SDL_Rect *rect);
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extern int WIN_GetDisplayUsableBounds(_THIS, SDL_VideoDisplay *display, SDL_Rect *rect);
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extern void WIN_ScreenPointFromSDL(int *x, int *y, int *dpiOut);
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extern void WIN_ScreenPointFromSDLFloat(float x, float y, LONG *xOut, LONG *yOut, int *dpiOut);
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extern void WIN_ScreenPointToSDL(int *x, int *y);
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extern void WIN_ScreenPointToSDLFloat(LONG x, LONG y, float *xOut, float *yOut);
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extern int WIN_GetDisplayModes(_THIS, SDL_VideoDisplay *display);
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extern int WIN_SetDisplayMode(_THIS, SDL_VideoDisplay *display, SDL_DisplayMode *mode);
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extern void WIN_RefreshDisplays(_THIS);
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extern void WIN_QuitModes(_THIS);
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#endif /* SDL_windowsmodes_h_ */
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