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Officially added the concept of window pixel density

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The SDL_WINDOW_ALLOW_HIGHDPI flag has been renamed SDL_WINDOW_HIGH_PIXEL_DENSITY, and added the function SDL_GetWindowPixelDensity()
This commit is contained in:
Sam Lantinga 2023-05-17 16:39:15 -07:00
parent e708674416
commit cc94f600fd
19 changed files with 59 additions and 70 deletions
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11
include/SDL3/SDL_hints.h
View file

@ -1638,17 +1638,6 @@ extern "C" {
*/
#define SDL_HINT_VIDEO_EXTERNAL_CONTEXT "SDL_VIDEO_EXTERNAL_CONTEXT"
/**
* \brief A variable controlling whether to use high pixel density display modes
*
* The variable can be set to the following values:
* "0" - Disable high pixel density display modes
* "1" - Enable high pixel density display modes
*
* The default value is "1". This hint must be set before display modes are queried and windows are created.
*/
#define SDL_HINT_VIDEO_ENABLE_HIGH_PIXEL_DENSITY "SDL_VIDEO_ENABLE_HIGH_PIXEL_DENSITY"
/**
* \brief A variable that dictates policy for fullscreen Spaces on macOS.
*

17
include/SDL3/SDL_video.h
View file

@ -141,7 +141,7 @@ typedef enum
SDL_WINDOW_MOUSE_FOCUS = 0x00000400, /**< window has mouse focus */
/* 0x00001000 was SDL_WINDOW_FULLSCREEN_DESKTOP in SDL2, please reserve this bit for sdl2-compat. */
SDL_WINDOW_FOREIGN = 0x00000800, /**< window not created by SDL */
/* 0x00002000 was SDL_WINDOW_ALLOW_HIGHDPI in SDL2, please reserve this bit for sdl2-compat. */
SDL_WINDOW_HIGH_PIXEL_DENSITY = 0x00002000, /**< window uses high pixel density back buffer if possible */
SDL_WINDOW_MOUSE_CAPTURE = 0x00004000, /**< window has mouse captured (unrelated to MOUSE_GRABBED) */
SDL_WINDOW_ALWAYS_ON_TOP = 0x00008000, /**< window should always be above others */
SDL_WINDOW_SKIP_TASKBAR = 0x00010000, /**< window should not be added to the taskbar */
@ -557,6 +557,21 @@ extern DECLSPEC SDL_DisplayID SDLCALL SDL_GetDisplayForRect(const SDL_Rect *rect
*/
extern DECLSPEC SDL_DisplayID SDLCALL SDL_GetDisplayForWindow(SDL_Window *window);
/**
* Get the pixel density of a window.
*
* This is a ratio of pixel size to window size. For example, if the window is 1920x1080 and it has a high density back buffer of 3840x2160 pixels, it would have a pixel density of 2.0.
*
* \param window the window to query
* \returns the pixel density or 0.0f on failure; call SDL_GetError() for
* more information.
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_GetWindowDisplayScale
*/
extern DECLSPEC float SDLCALL SDL_GetWindowPixelDensity(SDL_Window *window);
/**
* Get the content display scale relative to a window's pixel size.
*