SDL_shape.h File Reference

#include "SDL_stdinc.h"
#include "SDL_pixels.h"
#include "SDL_rect.h"
#include "SDL_surface.h"
#include "SDL_video.h"
#include "begin_code.h"
#include "close_code.h"

Go to the source code of this file.

Classes
struct	SDL_WindowShapeMode
	A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents. More...
union	SDL_WindowShapeParams
	A union containing parameters for shaped windows. More...

Macros
#define	SDL_INVALID_SHAPE_ARGUMENT   -2
#define	SDL_NONSHAPEABLE_WINDOW   -1
#define	SDL_SHAPEMODEALPHA(mode)   (mode == ShapeModeDefault || mode == ShapeModeBinarizeAlpha || mode == ShapeModeReverseBinarizeAlpha)
#define	SDL_WINDOW_LACKS_SHAPE   -3

Typedefs
typedef struct SDL_WindowShapeMode	SDL_WindowShapeMode
	A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents. More...

Enumerations
enum	WindowShapeMode { ShapeModeDefault, ShapeModeBinarizeAlpha, ShapeModeReverseBinarizeAlpha, ShapeModeColorKey }
	An enum denoting the specific type of contents present in an SDL_WindowShapeParams union. More...

Functions
DECLSPEC SDL_Window *SDLCALL	SDL_CreateShapedWindow (const char *title, unsigned int x, unsigned int y, unsigned int w, unsigned int h, Uint32 flags)
	Create a window that can be shaped with the specified position, dimensions, and flags. More...
DECLSPEC int SDLCALL	SDL_GetShapedWindowMode (SDL_Window *window, SDL_WindowShapeMode *shape_mode)
	Get the shape parameters of a shaped window. More...
DECLSPEC SDL_bool SDLCALL	SDL_IsShapedWindow (const SDL_Window *window)
	Return whether the given window is a shaped window. More...
DECLSPEC int SDLCALL	SDL_SetWindowShape (SDL_Window *window, SDL_Surface *shape, SDL_WindowShapeMode *shape_mode)
	Set the shape and parameters of a shaped window. More...

Detailed Description

Header file for the shaped window API.

Definition in file SDL_shape.h.

Macro Definition Documentation

#define SDL_INVALID_SHAPE_ARGUMENT   -2

Definition at line 43 of file SDL_shape.h.

Referenced by SDL_SetWindowShape().

#define SDL_NONSHAPEABLE_WINDOW   -1

Definition at line 42 of file SDL_shape.h.

Referenced by SDL_GetShapedWindowMode(), and SDL_SetWindowShape().

#define SDL_SHAPEMODEALPHA

(

mode

)

(mode == ShapeModeDefault || mode == ShapeModeBinarizeAlpha || mode == ShapeModeReverseBinarizeAlpha)

Definition at line 90 of file SDL_shape.h.

#define SDL_WINDOW_LACKS_SHAPE   -3

Definition at line 44 of file SDL_shape.h.

Referenced by SDL_GetShapedWindowMode().

Typedef Documentation

typedef struct SDL_WindowShapeMode SDL_WindowShapeMode

A struct that tags the SDL_WindowShapeParams union with an enum describing the type of its contents.

Enumeration Type Documentation

enum WindowShapeMode

An enum denoting the specific type of contents present in an SDL_WindowShapeParams union.

Enumerator
ShapeModeDefault	The default mode, a binarized alpha cutoff of 1.
ShapeModeBinarizeAlpha	A binarized alpha cutoff with a given integer value.
ShapeModeReverseBinarizeAlpha	A binarized alpha cutoff with a given integer value, but with the opposite comparison.
ShapeModeColorKey	A color key is applied.

Definition at line 79 of file SDL_shape.h.

Function Documentation

DECLSPEC SDL_Window* SDLCALL SDL_CreateShapedWindow	(	const char *	title,
		unsigned int	x,
		unsigned int	y,
		unsigned int	w,
		unsigned int	h,
		Uint32	flags
	)

Create a window that can be shaped with the specified position, dimensions, and flags.

Parameters

title	The title of the window, in UTF-8 encoding.
x	The x position of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED.
y	The y position of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED.
w	The width of the window.
h	The height of the window.
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.

Returns

The window created, or NULL if window creation failed.

See Also

SDL_DestroyWindow()

Definition at line 33 of file SDL_shape.c.

References SDL_WindowShapeParams::binarizationCutoff, SDL_ShapeDriver::CreateShaper, SDL_WindowShaper::hasshape, SDL_WindowShaper::mode, SDL_WindowShapeMode::mode, NULL, SDL_WindowShapeMode::parameters, SDL_CreateWindow(), SDL_DestroyWindow(), SDL_FALSE, SDL_GetVideoDevice(), SDL_WINDOW_BORDERLESS, SDL_WINDOW_FULLSCREEN, SDL_WINDOW_RESIZABLE, SDL_VideoDevice::shape_driver, ShapeModeDefault, SDL_Window::shaper, SDL_WindowShaper::userx, and SDL_WindowShaper::usery.

DECLSPEC int SDLCALL SDL_GetShapedWindowMode	(	SDL_Window *	window,
		SDL_WindowShapeMode *	shape_mode
	)

Get the shape parameters of a shaped window.

Parameters

window	The shaped window whose parameters should be retrieved.
shape_mode	An empty shape-mode structure to fill, or NULL to check whether the window has a shape.

Returns

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.

See Also

SDL_WindowShapeMode

SDL_SetWindowShape

Definition at line 267 of file SDL_shape.c.

References SDL_WindowShaper::mode, NULL, SDL_IsShapedWindow(), SDL_NONSHAPEABLE_WINDOW, SDL_WINDOW_LACKS_SHAPE, SDL_WindowHasAShape(), and SDL_Window::shaper.

DECLSPEC SDL_bool SDLCALL SDL_IsShapedWindow

(

const SDL_Window *

window

)

Return whether the given window is a shaped window.

Parameters

window

The window to query for being shaped.

Returns

SDL_TRUE if the window is a window that can be shaped, SDL_FALSE if the window is unshaped or NULL.

See Also

SDL_CreateShapedWindow

Definition at line 57 of file SDL_shape.c.

References NULL, SDL_FALSE, and SDL_Window::shaper.

Referenced by SDL_GetShapedWindowMode(), SDL_SetWindowShape(), and SDL_WindowHasAShape().

DECLSPEC int SDLCALL SDL_SetWindowShape	(	SDL_Window *	window,
		SDL_Surface *	shape,
		SDL_WindowShapeMode *	shape_mode
	)

Set the shape and parameters of a shaped window.

Parameters

window	The shaped window whose parameters should be set.
shape	A surface encoding the desired shape for the window.
shape_mode	The parameters to set for the shaped window.

Returns

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.

See Also

SDL_WindowShapeMode

SDL_GetShapedWindowMode.

Definition at line 236 of file SDL_shape.c.

References SDL_WindowShaper::hasshape, SDL_WindowShaper::mode, NULL, SDL_GetVideoDevice(), SDL_INVALID_SHAPE_ARGUMENT, SDL_IsShapedWindow(), SDL_NONSHAPEABLE_WINDOW, SDL_SetWindowPosition(), SDL_TRUE, SDL_ShapeDriver::SetWindowShape, SDL_VideoDevice::shape_driver, SDL_Window::shaper, SDL_WindowShaper::userx, and SDL_WindowShaper::usery.