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These functions allow you to create surfaces with alternate high DPI content, and will be used for high DPI icon and cursor support.
87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 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_surface_c_h_
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#define SDL_surface_c_h_
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/* Useful functions and variables from SDL_surface.c */
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#include "../SDL_list.h"
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/* Surface internal flags */
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typedef Uint32 SDL_SurfaceDataFlags;
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#define SDL_INTERNAL_SURFACE_DONTFREE 0x00000001u /**< Surface is referenced internally */
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#define SDL_INTERNAL_SURFACE_STACK 0x00000002u /**< Surface is allocated on the stack */
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#define SDL_INTERNAL_SURFACE_RLEACCEL 0x00000004u /**< Surface is RLE encoded */
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/* Surface internal data definition */
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struct SDL_SurfaceData
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{
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/** flags for this surface */
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SDL_SurfaceDataFlags flags;
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/** properties for this surface */
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SDL_PropertiesID props;
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/** detailed format for this surface */
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const SDL_PixelFormatDetails *format;
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/** Pixel colorspace */
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SDL_Colorspace colorspace;
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/** palette for indexed surfaces */
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SDL_Palette *palette;
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/** Alternate representation of images */
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int num_images;
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SDL_Surface **images;
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/** information needed for surfaces requiring locks */
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int locked;
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/** clipping information */
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SDL_Rect clip_rect;
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/** info for fast blit mapping to other surfaces */
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SDL_BlitMap map;
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};
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typedef struct SDL_InternalSurface
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{
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SDL_Surface surface;
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SDL_SurfaceData internal;
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} SDL_InternalSurface;
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/* Surface functions */
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extern SDL_bool SDL_SurfaceValid(SDL_Surface *surface);
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extern void SDL_UpdateSurfaceLockFlag(SDL_Surface *surface);
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extern float SDL_GetDefaultSDRWhitePoint(SDL_Colorspace colorspace);
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extern float SDL_GetSurfaceSDRWhitePoint(SDL_Surface *surface, SDL_Colorspace colorspace);
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extern float SDL_GetDefaultHDRHeadroom(SDL_Colorspace colorspace);
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extern float SDL_GetSurfaceHDRHeadroom(SDL_Surface *surface, SDL_Colorspace colorspace);
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extern SDL_Surface *SDL_GetSurfaceImage(SDL_Surface *surface, float display_scale);
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extern int SDL_SoftStretch(SDL_Surface *src, const SDL_Rect *srcrect, SDL_Surface *dst, const SDL_Rect *dstrect, SDL_ScaleMode scaleMode);
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#endif /* SDL_surface_c_h_ */
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