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.
69 lines
2.2 KiB
C
69 lines
2.2 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_x11modes_h_
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#define SDL_x11modes_h_
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struct SDL_DisplayData
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{
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int screen;
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Visual *visual;
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int depth;
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int scanline_pad;
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int x;
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int y;
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SDL_bool use_xrandr;
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#if SDL_VIDEO_DRIVER_X11_XRANDR
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RROutput xrandr_output;
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#endif
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};
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struct SDL_DisplayModeData
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{
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#if SDL_VIDEO_DRIVER_X11_XRANDR
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RRMode xrandr_mode;
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#else
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int unused; /* just so struct isn't empty. */
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#endif
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};
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extern int X11_InitModes(_THIS);
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extern int X11_GetDisplayModes(_THIS, SDL_VideoDisplay *display);
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extern int X11_SetDisplayMode(_THIS, SDL_VideoDisplay *display, SDL_DisplayMode *mode);
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extern void X11_QuitModes(_THIS);
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/* Some utility functions for working with visuals */
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extern int X11_GetVisualInfoFromVisual(Display *display, Visual *visual,
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XVisualInfo *vinfo);
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extern Uint32 X11_GetPixelFormatFromVisualInfo(Display *display,
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XVisualInfo *vinfo);
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extern int X11_GetDisplayBounds(_THIS, SDL_VideoDisplay *sdl_display, SDL_Rect *rect);
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extern int X11_GetDisplayUsableBounds(_THIS, SDL_VideoDisplay *sdl_display, SDL_Rect *rect);
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#if SDL_VIDEO_DRIVER_X11_XRANDR
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extern void X11_HandleXRandREvent(_THIS, const XEvent *xevent);
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#endif
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#endif /* SDL_x11modes_h_ */
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