New file |
| | |
| | | /* |
| | | Simple DirectMedia Layer |
| | | Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org> |
| | | |
| | | This software is provided 'as-is', without any express or implied |
| | | warranty. In no event will the authors be held liable for any damages |
| | | arising from the use of this software. |
| | | |
| | | Permission is granted to anyone to use this software for any purpose, |
| | | including commercial applications, and to alter it and redistribute it |
| | | freely, subject to the following restrictions: |
| | | |
| | | 1. The origin of this software must not be misrepresented; you must not |
| | | claim that you wrote the original software. If you use this software |
| | | in a product, an acknowledgment in the product documentation would be |
| | | appreciated but is not required. |
| | | 2. Altered source versions must be plainly marked as such, and must not be |
| | | misrepresented as being the original software. |
| | | 3. This notice may not be removed or altered from any source distribution. |
| | | */ |
| | | |
| | | #ifndef _SDL_shape_h |
| | | #define _SDL_shape_h |
| | | |
| | | #include "SDL_stdinc.h" |
| | | #include "SDL_pixels.h" |
| | | #include "SDL_rect.h" |
| | | #include "SDL_surface.h" |
| | | #include "SDL_video.h" |
| | | |
| | | #include "begin_code.h" |
| | | /* Set up for C function definitions, even when using C++ */ |
| | | #ifdef __cplusplus |
| | | extern "C" { |
| | | #endif |
| | | |
| | | /** \file SDL_shape.h |
| | | * |
| | | * Header file for the shaped window API. |
| | | */ |
| | | |
| | | #define SDL_NONSHAPEABLE_WINDOW -1 |
| | | #define SDL_INVALID_SHAPE_ARGUMENT -2 |
| | | #define SDL_WINDOW_LACKS_SHAPE -3 |
| | | |
| | | /** |
| | | * \brief Create a window that can be shaped with the specified position, dimensions, and flags. |
| | | * |
| | | * \param title The title of the window, in UTF-8 encoding. |
| | | * \param x The x position of the window, ::SDL_WINDOWPOS_CENTERED, or |
| | | * ::SDL_WINDOWPOS_UNDEFINED. |
| | | * \param y The y position of the window, ::SDL_WINDOWPOS_CENTERED, or |
| | | * ::SDL_WINDOWPOS_UNDEFINED. |
| | | * \param w The width of the window. |
| | | * \param h The height of the window. |
| | | * \param flags The flags for the window, a mask of SDL_WINDOW_BORDERLESS with any of the following: |
| | | * ::SDL_WINDOW_OPENGL, ::SDL_WINDOW_INPUT_GRABBED, |
| | | * ::SDL_WINDOW_HIDDEN, ::SDL_WINDOW_RESIZABLE, |
| | | * ::SDL_WINDOW_MAXIMIZED, ::SDL_WINDOW_MINIMIZED, |
| | | * ::SDL_WINDOW_BORDERLESS is always set, and ::SDL_WINDOW_FULLSCREEN is always unset. |
| | | * |
| | | * \return The window created, or NULL if window creation failed. |
| | | * |
| | | * \sa SDL_DestroyWindow() |
| | | */ |
| | | extern DECLSPEC SDL_Window * SDLCALL SDL_CreateShapedWindow(const char *title,unsigned int x,unsigned int y,unsigned int w,unsigned int h,Uint32 flags); |
| | | |
| | | /** |
| | | * \brief Return whether the given window is a shaped window. |
| | | * |
| | | * \param window The window to query for being shaped. |
| | | * |
| | | * \return SDL_TRUE if the window is a window that can be shaped, SDL_FALSE if the window is unshaped or NULL. |
| | | * \sa SDL_CreateShapedWindow |
| | | */ |
| | | extern DECLSPEC SDL_bool SDLCALL SDL_IsShapedWindow(const SDL_Window *window); |
| | | |
| | | /** \brief An enum denoting the specific type of contents present in an SDL_WindowShapeParams union. */ |
| | | typedef enum { |
| | | /** \brief The default mode, a binarized alpha cutoff of 1. */ |
| | | ShapeModeDefault, |
| | | /** \brief A binarized alpha cutoff with a given integer value. */ |
| | | ShapeModeBinarizeAlpha, |
| | | /** \brief A binarized alpha cutoff with a given integer value, but with the opposite comparison. */ |
| | | ShapeModeReverseBinarizeAlpha, |
| | | /** \brief A color key is applied. */ |
| | | ShapeModeColorKey |
| | | } WindowShapeMode; |
| | | |
| | | #define SDL_SHAPEMODEALPHA(mode) (mode == ShapeModeDefault || mode == ShapeModeBinarizeAlpha || mode == ShapeModeReverseBinarizeAlpha) |
| | | |
| | | /** \brief A union containing parameters for shaped windows. */ |
| | | typedef union { |
| | | /** \brief a cutoff alpha value for binarization of the window shape's alpha channel. */ |
| | | Uint8 binarizationCutoff; |
| | | SDL_Color colorKey; |
| | | } SDL_WindowShapeParams; |
| | | |
| | | /** \brief A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents. */ |
| | | typedef struct SDL_WindowShapeMode { |
| | | /** \brief The mode of these window-shape parameters. */ |
| | | WindowShapeMode mode; |
| | | /** \brief Window-shape parameters. */ |
| | | SDL_WindowShapeParams parameters; |
| | | } SDL_WindowShapeMode; |
| | | |
| | | /** |
| | | * \brief Set the shape and parameters of a shaped window. |
| | | * |
| | | * \param window The shaped window whose parameters should be set. |
| | | * \param shape A surface encoding the desired shape for the window. |
| | | * \param shape_mode The parameters to set for the shaped window. |
| | | * |
| | | * \return 0 on success, SDL_INVALID_SHAPE_ARGUMENT on invalid an invalid shape argument, or SDL_NONSHAPEABLE_WINDOW |
| | | * if the SDL_Window* given does not reference a valid shaped window. |
| | | * |
| | | * \sa SDL_WindowShapeMode |
| | | * \sa SDL_GetShapedWindowMode. |
| | | */ |
| | | extern DECLSPEC int SDLCALL SDL_SetWindowShape(SDL_Window *window,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode); |
| | | |
| | | /** |
| | | * \brief Get the shape parameters of a shaped window. |
| | | * |
| | | * \param window The shaped window whose parameters should be retrieved. |
| | | * \param shape_mode An empty shape-mode structure to fill, or NULL to check whether the window has a shape. |
| | | * |
| | | * \return 0 if the window has a shape and, provided shape_mode was not NULL, shape_mode has been filled with the mode |
| | | * data, SDL_NONSHAPEABLE_WINDOW if the SDL_Window given is not a shaped window, or SDL_WINDOW_LACKS_SHAPE if |
| | | * the SDL_Window* given is a shapeable window currently lacking a shape. |
| | | * |
| | | * \sa SDL_WindowShapeMode |
| | | * \sa SDL_SetWindowShape |
| | | */ |
| | | extern DECLSPEC int SDLCALL SDL_GetShapedWindowMode(SDL_Window *window,SDL_WindowShapeMode *shape_mode); |
| | | |
| | | /* Ends C function definitions when using C++ */ |
| | | #ifdef __cplusplus |
| | | } |
| | | #endif |
| | | #include "close_code.h" |
| | | |
| | | #endif /* _SDL_shape_h */ |