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Added support for high-DPI cursors and icons

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Fixes https://github.com/libsdl-org/SDL/issues/9838
This commit is contained in:
Sam Lantinga
2024-08-01 11:38:17 -07:00
parent 94d9229ce2
commit 31ed3665ad
6 changed files with 200 additions and 42 deletions
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2
include/SDL3/SDL_mouse.h
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@@ -413,6 +413,8 @@ extern SDL_DECLSPEC SDL_Cursor * SDLCALL SDL_CreateCursor(const Uint8 * data,
/**
* Create a color cursor.
*
* If this function is passed a surface with alternate representations, the surface will be interpreted as the content to be used for 100% display scale, and the alternate representations will be used for high DPI situations. For example, if the original surface is 32x32, then on a 2x macOS display or 200% display scale on Windows, a 64x64 version of the image will be used, if available. If a matching version of the image isn't available, the closest size image will be scaled to the appropriate size and be used instead.
*
* \param surface an SDL_Surface structure representing the cursor image.
* \param hot_x the x position of the cursor hot spot.
* \param hot_y the y position of the cursor hot spot.

2
include/SDL3/SDL_video.h
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@@ -1334,6 +1334,8 @@ extern SDL_DECLSPEC const char * SDLCALL SDL_GetWindowTitle(SDL_Window *window);
/**
* Set the icon for a window.
*
* If this function is passed a surface with alternate representations, the surface will be interpreted as the content to be used for 100% display scale, and the alternate representations will be used for high DPI situations. For example, if the original surface is 32x32, then on a 2x macOS display or 200% display scale on Windows, a 64x64 version of the image will be used, if available. If a matching version of the image isn't available, the closest size image will be scaled to the appropriate size and be used instead.
*
* \param window the window to change.
* \param icon an SDL_Surface structure containing the icon for the window.
* \returns 0 on success or a negative error code on failure; call