/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

/**

 * \file SDL_video.h

 *

 * Header file for SDL video functions.

 */

#ifndef _SDL_video_h

#define _SDL_video_h

#include "SDL_stdinc.h"

#include "SDL_pixels.h"

#include "SDL_rect.h"

#include "SDL_surface.h"

#include "begin_code.h"

/* Set up for C function definitions, even when using C++ */

#ifdef __cplusplus

/* *INDENT-OFF* */

extern "C" {

/* *INDENT-ON* */

#endif

/**

 * \struct SDL_DisplayMode

 *

 * \brief  The structure that defines a display mode

 *

 * \sa SDL_GetNumDisplayModes()

 * \sa SDL_GetDisplayMode()

 * \sa SDL_GetDesktopDisplayMode()

 * \sa SDL_GetCurrentDisplayMode()

 * \sa SDL_GetClosestDisplayMode()

 * \sa SDL_SetDisplayMode()

 */

typedef struct

{

    Uint32 format;              /**< pixel format */

    int w;                      /**< width */

    int h;                      /**< height */

    int refresh_rate;           /**< refresh rate (or zero for unspecified) */

    void *driverdata;           /**< driver-specific data, initialize to 0 */

} SDL_DisplayMode;

/**

 * \typedef SDL_WindowID

 *

 * \brief The type used to identify a window

 *

 * \sa SDL_CreateWindow()

 * \sa SDL_CreateWindowFrom()

 * \sa SDL_DestroyWindow()

 * \sa SDL_GetWindowData()

 * \sa SDL_GetWindowFlags()

 * \sa SDL_GetWindowGrab()

 * \sa SDL_GetWindowPosition()

 * \sa SDL_GetWindowSize()

 * \sa SDL_GetWindowTitle()

 * \sa SDL_HideWindow()

 * \sa SDL_MaximizeWindow()

 * \sa SDL_MinimizeWindow()

 * \sa SDL_RaiseWindow()

 * \sa SDL_RestoreWindow()

 * \sa SDL_SetWindowData()

 * \sa SDL_SetWindowFullscreen()

 * \sa SDL_SetWindowGrab()

 * \sa SDL_SetWindowIcon()

 * \sa SDL_SetWindowPosition()

 * \sa SDL_SetWindowSize()

 * \sa SDL_SetWindowTitle()

 * \sa SDL_ShowWindow()

 */

typedef Uint32 SDL_WindowID;

/**

 * \enum SDL_WindowFlags

 *

 * \brief The flags on a window

 *

 * \sa SDL_GetWindowFlags()

 */

typedef enum

{

    SDL_WINDOW_FULLSCREEN = 0x00000001,         /**< fullscreen window, implies borderless */

    SDL_WINDOW_OPENGL = 0x00000002,             /**< window usable with OpenGL context */

    SDL_WINDOW_SHOWN = 0x00000004,              /**< window is visible */

    SDL_WINDOW_BORDERLESS = 0x00000008,         /**< no window decoration */

    SDL_WINDOW_RESIZABLE = 0x00000010,          /**< window can be resized */

    SDL_WINDOW_MINIMIZED = 0x00000020,          /**< minimized */

    SDL_WINDOW_MAXIMIZED = 0x00000040,          /**< maximized */

    SDL_WINDOW_INPUT_GRABBED = 0x00000100,      /**< window has grabbed input focus */

    SDL_WINDOW_INPUT_FOCUS = 0x00000200,        /**< window has input focus */

    SDL_WINDOW_MOUSE_FOCUS = 0x00000400         /**< window has mouse focus */

} SDL_WindowFlags;

/**

 * \def SDL_WINDOWPOS_UNDEFINED

 * \brief Used to indicate that you don't care what the window position is.

 */

#define SDL_WINDOWPOS_UNDEFINED 0x7FFFFFF

/**

 * \def SDL_WINDOWPOS_CENTERED

 * \brief Used to indicate that the window position should be centered.

 */

#define SDL_WINDOWPOS_CENTERED  0x7FFFFFE

/**

 * \enum SDL_WindowEventID

 *

 * \brief Event subtype for window events

 */

typedef enum

{

    SDL_WINDOWEVENT_NONE,               /**< Never used */

    SDL_WINDOWEVENT_SHOWN,              /**< Window has been shown */

    SDL_WINDOWEVENT_HIDDEN,             /**< Window has been hidden */

    SDL_WINDOWEVENT_EXPOSED,            /**< Window has been exposed and should be redrawn */

    SDL_WINDOWEVENT_MOVED,              /**< Window has been moved to data1,data2 */

    SDL_WINDOWEVENT_RESIZED,            /**< Window size changed to data1xdata2 */

    SDL_WINDOWEVENT_MINIMIZED,          /**< Window has been minimized */

    SDL_WINDOWEVENT_MAXIMIZED,          /**< Window has been maximized */

    SDL_WINDOWEVENT_RESTORED,           /**< Window has been restored to normal size and position */

    SDL_WINDOWEVENT_ENTER,              /**< The window has gained mouse focus */

    SDL_WINDOWEVENT_LEAVE,              /**< The window has lost mouse focus */

    SDL_WINDOWEVENT_FOCUS_GAINED,       /**< The window has gained keyboard focus */

    SDL_WINDOWEVENT_FOCUS_LOST,         /**< The window has lost keyboard focus */

    SDL_WINDOWEVENT_CLOSE               /**< The window manager requests that the window be closed */

} SDL_WindowEventID;

/**

 * \enum SDL_RendererFlags

 *

 * \brief Flags used when creating a rendering context

 */

typedef enum

{

    SDL_RENDERER_SINGLEBUFFER = 0x00000001,     /**< Render directly to the window, if possible */

    SDL_RENDERER_PRESENTCOPY = 0x00000002,      /**< Present uses a copy from back buffer to the front buffer */

    SDL_RENDERER_PRESENTFLIP2 = 0x00000004,     /**< Present uses a flip, swapping back buffer and front buffer */

    SDL_RENDERER_PRESENTFLIP3 = 0x00000008,     /**< Present uses a flip, rotating between two back buffers and a front buffer */

    SDL_RENDERER_PRESENTDISCARD = 0x00000010,   /**< Present leaves the contents of the backbuffer undefined */

    SDL_RENDERER_PRESENTVSYNC = 0x00000020,     /**< Present is synchronized with the refresh rate */

    SDL_RENDERER_ACCELERATED = 0x00000040       /**< The renderer uses hardware acceleration */

} SDL_RendererFlags;

/**

 * \struct SDL_RendererInfo

 *

 * \brief Information on the capabilities of a render driver or context

 */

typedef struct SDL_RendererInfo

{

    const char *name;           /**< The name of the renderer */

    Uint32 flags;               /**< Supported SDL_RendererFlags */

    Uint32 mod_modes;           /**< A mask of supported channel modulation */

    Uint32 blend_modes;         /**< A mask of supported blend modes */

    Uint32 scale_modes;         /**< A mask of supported scale modes */

    Uint32 num_texture_formats; /**< The number of available texture formats */

    Uint32 texture_formats[20]; /**< The available texture formats */

    int max_texture_width;      /**< The maximimum texture width */

    int max_texture_height;     /**< The maximimum texture height */

} SDL_RendererInfo;

/**

 * \enum SDL_TextureAccess

 *

 * \brief The access pattern allowed for a texture

 */

typedef enum

{

    SDL_TEXTUREACCESS_STATIC,    /**< Changes rarely, not lockable */

    SDL_TEXTUREACCESS_STREAMING  /**< Changes frequently, lockable */

} SDL_TextureAccess;

/**

 * \enum SDL_TextureModulate

 *

 * \brief The texture channel modulation used in SDL_RenderCopy()

 */

typedef enum

{

    SDL_TEXTUREMODULATE_NONE = 0x00000000,     /**< No modulation */

    SDL_TEXTUREMODULATE_COLOR = 0x00000001,    /**< srcC = srcC * color */

    SDL_TEXTUREMODULATE_ALPHA = 0x00000002     /**< srcA = srcA * alpha */

} SDL_TextureModulate;

/**

 * \enum SDL_TextureBlendMode

 *

 * \brief The texture blend mode used in SDL_RenderCopy()

 */

typedef enum

{

    SDL_TEXTUREBLENDMODE_NONE = 0x00000000,     /**< No blending */

    SDL_TEXTUREBLENDMODE_MASK = 0x00000001,     /**< dst = A ? src : dst (alpha is mask) */

    SDL_TEXTUREBLENDMODE_BLEND = 0x00000002,    /**< dst = (src * A) + (dst * (1-A)) */

    SDL_TEXTUREBLENDMODE_ADD = 0x00000004,      /**< dst = (src * A) + dst */

    SDL_TEXTUREBLENDMODE_MOD = 0x00000008       /**< dst = src * dst */

} SDL_TextureBlendMode;

/**

 * \enum SDL_TextureScaleMode

 *

 * \brief The texture scale mode used in SDL_RenderCopy()

 */

typedef enum

{

    SDL_TEXTURESCALEMODE_NONE = 0x00000000,     /**< No scaling, rectangles must match dimensions */

    SDL_TEXTURESCALEMODE_FAST = 0x00000001,     /**< Point sampling or equivalent algorithm */

    SDL_TEXTURESCALEMODE_SLOW = 0x00000002,     /**< Linear filtering or equivalent algorithm */

    SDL_TEXTURESCALEMODE_BEST = 0x00000004      /**< Bicubic filtering or equivalent algorithm */

} SDL_TextureScaleMode;

/**

 * \typedef SDL_TextureID

 *

 * \brief An efficient driver-specific representation of pixel data

 */

typedef Uint32 SDL_TextureID;

/**

 * \typedef SDL_GLContext

 *

 * \brief An opaque handle to an OpenGL context.

 */

typedef void *SDL_GLContext;

/**

 * \enum SDL_GLattr

 *

 * \brief OpenGL configuration attributes

 */

typedef enum

{

    SDL_GL_RED_SIZE,

    SDL_GL_GREEN_SIZE,

    SDL_GL_BLUE_SIZE,

    SDL_GL_ALPHA_SIZE,

    SDL_GL_BUFFER_SIZE,

    SDL_GL_DOUBLEBUFFER,

    SDL_GL_DEPTH_SIZE,

    SDL_GL_STENCIL_SIZE,

    SDL_GL_ACCUM_RED_SIZE,

    SDL_GL_ACCUM_GREEN_SIZE,

    SDL_GL_ACCUM_BLUE_SIZE,

    SDL_GL_ACCUM_ALPHA_SIZE,

    SDL_GL_STEREO,

    SDL_GL_MULTISAMPLEBUFFERS,

    SDL_GL_MULTISAMPLESAMPLES,

    SDL_GL_ACCELERATED_VISUAL,

    SDL_GL_RETAINED_BACKING

} SDL_GLattr;

/* Function prototypes */

/**

 * \fn int SDL_GetNumVideoDrivers(void)

 *

 * \brief Get the number of video drivers compiled into SDL

 *

 * \sa SDL_GetVideoDriver()

 */

extern DECLSPEC int SDLCALL SDL_GetNumVideoDrivers(void);

/**

 * \fn const char *SDL_GetVideoDriver(int index)

 *

 * \brief Get the name of a built in video driver.

 *

 * \note The video drivers are presented in the order in which they are

 * normally checked during initialization.

 *

 * \sa SDL_GetNumVideoDrivers()

 */

extern DECLSPEC const char *SDLCALL SDL_GetVideoDriver(int index);

/**

 * \fn int SDL_VideoInit(const char *driver_name, Uint32 flags)

 *

 * \brief Initialize the video subsystem, optionally specifying a video driver.

 *

 * \param driver_name Initialize a specific driver by name, or NULL for the default video driver.

 * \param flags FIXME: Still needed?

 *

 * \return 0 on success, -1 on error

 *

 * This function initializes the video subsystem; setting up a connection

 * to the window manager, etc, and determines the available display modes

 * and pixel formats, but does not initialize a window or graphics mode.

 *

 * \sa SDL_VideoQuit()

 */

extern DECLSPEC int SDLCALL SDL_VideoInit(const char *driver_name,

                                          Uint32 flags);

/**

 * \fn void SDL_VideoQuit(void)

 *

 * \brief Shuts down the video subsystem.

 *

 * This function closes all windows, and restores the original video mode.

 *

 * \sa SDL_VideoInit()

 */

extern DECLSPEC void SDLCALL SDL_VideoQuit(void);

/**

 * \fn const char *SDL_GetCurrentVideoDriver(void)

 *

 * \brief Returns the name of the currently initialized video driver.

 *

 * \return The name of the current video driver or NULL if no driver

 *         has been initialized

 *

 * \sa SDL_GetNumVideoDrivers()

 * \sa SDL_GetVideoDriver()

 */

extern DECLSPEC const char *SDLCALL SDL_GetCurrentVideoDriver(void);

/**

 * \fn int SDL_GetNumVideoDisplays(void)

 *

 * \brief Returns the number of available video displays.

 *

 * \sa SDL_SelectVideoDisplay()

 */

extern DECLSPEC int SDLCALL SDL_GetNumVideoDisplays(void);

/**

 * \fn int SDL_SelectVideoDisplay(int index)

 *

 * \brief Set the index of the currently selected display.

 *

 * \return 0 on success, or -1 if the index is out of range.

 *

 * \sa SDL_GetNumVideoDisplays()

 * \sa SDL_GetCurrentVideoDisplay()

 */

extern DECLSPEC int SDLCALL SDL_SelectVideoDisplay(int index);

/**

 * \fn int SDL_GetCurrentVideoDisplay(void)

 *

 * \brief Get the index of the currently selected display.

 *

 * \return The index of the currently selected display.

 *

 * \sa SDL_GetNumVideoDisplays()

 * \sa SDL_SelectVideoDisplay()

 */

extern DECLSPEC int SDLCALL SDL_GetCurrentVideoDisplay(void);

/**

 * \fn int SDL_GetNumDisplayModes(void)

 *

 * \brief Returns the number of available display modes for the current display.

 *

 * \sa SDL_GetDisplayMode()

 */

extern DECLSPEC int SDLCALL SDL_GetNumDisplayModes(void);

/**

 * \fn int SDL_GetDisplayMode(int index, SDL_DisplayMode *mode)

 *

 * \brief Fill in information about a specific display mode.

 *

 * \note The display modes are sorted in this priority:

 *       \li bits per pixel -> more colors to fewer colors

 *       \li width -> largest to smallest

 *       \li height -> largest to smallest

 *       \li refresh rate -> highest to lowest

 *

 * \sa SDL_GetNumDisplayModes()

 */

extern DECLSPEC int SDLCALL SDL_GetDisplayMode(int index,

                                               SDL_DisplayMode * mode);

/**

 * \fn int SDL_GetDesktopDisplayMode(SDL_DisplayMode *mode)

 *

 * \brief Fill in information about the desktop display mode for the current display.

 */

extern DECLSPEC int SDLCALL SDL_GetDesktopDisplayMode(SDL_DisplayMode * mode);

/**

 * \fn int SDL_GetCurrentDisplayMode(SDL_DisplayMode *mode)

 *

 * \brief Fill in information about the current display mode.

 */

extern DECLSPEC int SDLCALL SDL_GetCurrentDisplayMode(SDL_DisplayMode * mode);

/**

 * \fn SDL_DisplayMode *SDL_GetClosestDisplayMode(const SDL_DisplayMode *mode, SDL_DisplayMode *closest)

 *

 * \brief Get the closest match to the requested display mode.

 *

 * \param mode The desired display mode

 * \param closest A pointer to a display mode to be filled in with the closest match of the available display modes.

 *

 * \return The passed in value 'closest', or NULL if no matching video mode was available.

 *

 * The available display modes are scanned, and 'closest' is filled in with the closest mode matching the requested mode and returned.  The mode format and refresh_rate default to the desktop mode if they are 0.  The modes are scanned with size being first priority, format being second priority, and finally checking the refresh_rate.  If all the available modes are too small, then NULL is returned.

 *

 * \sa SDL_GetNumDisplayModes()

 * \sa SDL_GetDisplayMode()

 */

extern DECLSPEC SDL_DisplayMode *SDLCALL SDL_GetClosestDisplayMode(const

                                                                   SDL_DisplayMode

                                                                   * mode,

                                                                   SDL_DisplayMode

                                                                   * closest);

/**

 * \fn int SDL_SetFullscreenDisplayMode(const SDL_DisplayMode *mode)

 *

 * \brief Set the display mode used when a fullscreen window is visible

 *        on the currently selected display.

 *

 * \param mode The mode to use, or NULL for the desktop mode.

 *

 * \return 0 on success, or -1 if setting the display mode failed.

 *

 * \sa SDL_SetWindowFullscreen()

 */

extern DECLSPEC int SDLCALL SDL_SetFullscreenDisplayMode(const SDL_DisplayMode

                                                         * mode);

/**

 * \fn int SDL_GetFullscreenDisplayMode(SDL_DisplayMode *mode)

 *

 * \brief Fill in information about the display mode used when a fullscreen

 *        window is visible on the currently selected display.

 */

extern DECLSPEC int SDLCALL SDL_GetFullscreenDisplayMode(SDL_DisplayMode *

                                                         mode);

/**

 * \fn int SDL_SetDisplayPalette(const SDL_Color *colors, int firstcolor, int ncolors)

 *

 * \brief Set the palette entries for indexed display modes.

 *

 * \return 0 on success, or -1 if the display mode isn't palettized or the colors couldn't be set.

 */

extern DECLSPEC int SDLCALL SDL_SetDisplayPalette(const SDL_Color * colors,

                                                  int firstcolor,

                                                  int ncolors);

/**

 * \fn int SDL_GetDisplayPalette(SDL_Color *colors, int firstcolor, int ncolors)

 *

 * \brief Gets the palette entries for indexed display modes.

 *

 * \return 0 on success, or -1 if the display mode isn't palettized

 */

extern DECLSPEC int SDLCALL SDL_GetDisplayPalette(SDL_Color * colors,

                                                  int firstcolor,

                                                  int ncolors);

/**

 * \fn int SDL_SetGamma(float red, float green, float blue)

 *

 * \brief Set the gamma correction for each of the color channels on the currently selected display.

 *

 * \return 0 on success, or -1 if setting the gamma isn't supported.

 *

 * \sa SDL_SetGammaRamp()

 */

extern DECLSPEC int SDLCALL SDL_SetGamma(float red, float green, float blue);

/**

 * \fn int SDL_SetGammaRamp(const Uint16 * red, const Uint16 * green, const Uint16 * blue)

 *

 * \brief Set the gamma ramp for the currently selected display.

 *

 * \param red The translation table for the red channel, or NULL

 * \param green The translation table for the green channel, or NULL

 * \param blue The translation table for the blue channel, or NULL

 *

 * \return 0 on success, or -1 if gamma ramps are unsupported.

 *

 * Set the gamma translation table for the red, green, and blue channels

 * of the video hardware.  Each table is an array of 256 16-bit quantities,

 * representing a mapping between the input and output for that channel.

 * The input is the index into the array, and the output is the 16-bit

 * gamma value at that index, scaled to the output color precision.

 * 

 * \sa SDL_GetGammaRamp()

 */

extern DECLSPEC int SDLCALL SDL_SetGammaRamp(const Uint16 * red,

                                             const Uint16 * green,

                                             const Uint16 * blue);

/**

 * \fn int SDL_GetGammaRamp(Uint16 * red, Uint16 * green, Uint16 * blue)

 *

 * \brief Get the gamma ramp for the currently selected display.

 *

 * \param red A pointer to a 256 element array of 16-bit quantities to hold the translation table for the red channel, or NULL.

 * \param green A pointer to a 256 element array of 16-bit quantities to hold the translation table for the green channel, or NULL.

 * \param blue A pointer to a 256 element array of 16-bit quantities to hold the translation table for the blue channel, or NULL.

 * 

 * \return 0 on success, or -1 if gamma ramps are unsupported.

 *

 * \sa SDL_SetGammaRamp()

 */

extern DECLSPEC int SDLCALL SDL_GetGammaRamp(Uint16 * red, Uint16 * green,

                                             Uint16 * blue);

/**

 * \fn SDL_WindowID SDL_CreateWindow(const char *title, int x, int y, int w, int h, Uint32 flags)

 *

 * \brief Create a window 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 any of the following: SDL_WINDOW_FULLSCREEN, SDL_WINDOW_OPENGL, SDL_WINDOW_SHOWN, SDL_WINDOW_BORDERLESS, SDL_WINDOW_RESIZABLE, SDL_WINDOW_MAXIMIZED, SDL_WINDOW_MINIMIZED, SDL_WINDOW_INPUT_GRABBED

 *

 * \return The id of the window created, or zero if window creation failed.

 *

 * \sa SDL_DestroyWindow()

 */

extern DECLSPEC SDL_WindowID SDLCALL SDL_CreateWindow(const char *title,

                                                      int x, int y, int w,

                                                      int h, Uint32 flags);

/**

 * \fn SDL_WindowID SDL_CreateWindowFrom(void *data)

 *

 * \brief Create an SDL window struct from an existing native window.

 *

 * \param data A pointer to driver-dependent window creation data

 *

 * \return The id of the window created, or zero if window creation failed.

 *

 * \warning This function is NOT SUPPORTED, use at your own risk!

 *

 * \sa SDL_DestroyWindow()

 */

extern DECLSPEC SDL_WindowID SDLCALL SDL_CreateWindowFrom(const void *data);

/**

 * \fn Uint32 SDL_GetWindowFlags(SDL_WindowID windowID)

 *

 * \brief Get the window flags.

 */

extern DECLSPEC Uint32 SDLCALL SDL_GetWindowFlags(SDL_WindowID windowID);

/**

 * \fn void SDL_SetWindowTitle(SDL_WindowID windowID, const char *title)

 *

 * \brief Set the title of the window, in UTF-8 format.

 *

 * \sa SDL_GetWindowTitle()

 */

extern DECLSPEC void SDLCALL SDL_SetWindowTitle(SDL_WindowID windowID,

                                                const char *title);

/**

 * \fn const char *SDL_GetWindowTitle(SDL_WindowID windowID)

 *

 * \brief Get the title of the window, in UTF-8 format.

 *

 * \sa SDL_SetWindowTitle()

 */

extern DECLSPEC const char *SDLCALL SDL_GetWindowTitle(SDL_WindowID windowID);

/**

 * \fn void SDL_SetWindowIcon(SDL_Surface *icon)

 *

 * \brief Set the icon of the window.

 *

 * \param icon The icon for the window

 *

 * FIXME: The icon needs to be set before the window is first shown.  Should some icon representation be part of the window creation data?

 */

extern DECLSPEC void SDLCALL SDL_SetWindowIcon(SDL_Surface * icon);

/**

 * \fn void SDL_SetWindowData(SDL_WindowID windowID, void *userdata)

 *

 * \brief Associate an arbitrary pointer with the window.

 *

 * \sa SDL_GetWindowData()

 */

extern DECLSPEC void SDLCALL SDL_SetWindowData(SDL_WindowID windowID,

                                               void *userdata);

/**

 * \fn void *SDL_GetWindowData(SDL_WindowID windowID)

 *

 * \brief Retrieve the data pointer associated with the window.

 *

 * \sa SDL_SetWindowData()

 */

extern DECLSPEC void *SDLCALL SDL_GetWindowData(SDL_WindowID windowID);

/**

 * \fn void SDL_SetWindowPosition(SDL_WindowID windowID, int x, int y)

 *

 * \brief Set the position of the window.

 *

 * \param windowID The window to reposition

 * \param x The x coordinate of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED

 * \param y The y coordinate of the window, SDL_WINDOWPOS_CENTERED, or SDL_WINDOWPOS_UNDEFINED

 *

 * \note The window coordinate origin is the upper left of the display.

 *

 * \sa SDL_GetWindowPosition()

 */

extern DECLSPEC void SDLCALL SDL_SetWindowPosition(SDL_WindowID windowID,

                                                   int x, int y);

/**

 * \fn void SDL_GetWindowPosition(SDL_WindowID windowID, int *x, int *y)

 *

 * \brief Get the position of the window.

 *

 * \sa SDL_SetWindowPosition()

 */

extern DECLSPEC void SDLCALL SDL_GetWindowPosition(SDL_WindowID windowID,

                                                   int *x, int *y);

/**

 * \fn void SDL_SetWindowSize(SDL_WindowID windowID, int w, int w)

 *

 * \brief Set the size of the window's client area.

 *

 * \note You can't change the size of a fullscreen window, it automatically

 * matches the size of the display mode.

 *

 * \sa SDL_GetWindowSize()

 */

extern DECLSPEC void SDLCALL SDL_SetWindowSize(SDL_WindowID windowID, int w,

                                               int h);

/**

 * \fn void SDL_GetWindowSize(SDL_WindowID windowID, int *w, int *w)

 *

 * \brief Get the size of the window's client area.

 *

 * \sa SDL_SetWindowSize()

 */

extern DECLSPEC void SDLCALL SDL_GetWindowSize(SDL_WindowID windowID, int *w,

                                               int *h);

/**

 * \fn void SDL_ShowWindow(SDL_WindowID windowID)

 *

 * \brief Show the window

 *

 * \sa SDL_HideWindow()

 */

extern DECLSPEC void SDLCALL SDL_ShowWindow(SDL_WindowID windowID);

/**

 * \fn void SDL_HideWindow(SDL_WindowID windowID)

 *

 * \brief Hide the window

 *

 * \sa SDL_ShowWindow()

 */

extern DECLSPEC void SDLCALL SDL_HideWindow(SDL_WindowID windowID);

/**

 * \fn void SDL_RaiseWindow(SDL_WindowID windowID)

 *

 * \brief Raise the window above other windows and set the input focus.

 */

extern DECLSPEC void SDLCALL SDL_RaiseWindow(SDL_WindowID windowID);

/**

 * \fn void SDL_MaximizeWindow(SDL_WindowID windowID)

 *

 * \brief Make the window as large as possible.

 *

 * \sa SDL_RestoreWindow()

 */

extern DECLSPEC void SDLCALL SDL_MaximizeWindow(SDL_WindowID windowID);

/**

 * \fn void SDL_MinimizeWindow(SDL_WindowID windowID)

 *

 * \brief Minimize the window to an iconic representation.

 *

 * \sa SDL_RestoreWindow()

 */

extern DECLSPEC void SDLCALL SDL_MinimizeWindow(SDL_WindowID windowID);

/**

 * \fn void SDL_RestoreWindow(SDL_WindowID windowID)

 *

 * \brief Restore the size and position of a minimized or maximized window.

 *

 * \sa SDL_MaximizeWindow()

 * \sa SDL_MinimizeWindow()

 */

extern DECLSPEC void SDLCALL SDL_RestoreWindow(SDL_WindowID windowID);

/**

 * \fn int SDL_SetWindowFullscreen(SDL_WindowID windowID, int fullscreen)

 *

 * \brief Set the window's fullscreen state.

 *

 * \return 0 on success, or -1 if setting the display mode failed.

 *

 * \sa SDL_SetFullscreenDisplayMode()

 */

extern DECLSPEC int SDLCALL SDL_SetWindowFullscreen(SDL_WindowID windowID,

                                                    int fullscreen);

/**

 * \fn void SDL_SetWindowGrab(SDL_WindowID windowID, int mode)

 *

 * \brief Set the window's input grab mode.

 *

 * \param mode This is 1 to grab input, and 0 to release input.

 *

 * \sa SDL_GetWindowGrab()

 */

extern DECLSPEC void SDLCALL SDL_SetWindowGrab(SDL_WindowID windowID,

                                               int mode);

/**

 * \fn int SDL_GetWindowGrab(SDL_WindowID windowID)

 *

 * \brief Get the window's input grab mode.

 *

 * \return This returns 1 if input is grabbed, and 0 otherwise.

 *

 * \sa SDL_SetWindowGrab()

 */

extern DECLSPEC int SDLCALL SDL_GetWindowGrab(SDL_WindowID windowID);

/**

 * \fn SDL_bool SDL_GetWindowWMInfo(SDL_WindowID windowID, struct SDL_SysWMinfo * info)

 *

 * \brief Get driver specific information about a window.

 *

 * \note Include SDL_syswm.h for the declaration of SDL_SysWMinfo.

 */

struct SDL_SysWMinfo;

extern DECLSPEC SDL_bool SDLCALL SDL_GetWindowWMInfo(SDL_WindowID windowID,

                                                     struct SDL_SysWMinfo

                                                     *info);

/**

 * \fn void SDL_DestroyWindow(SDL_WindowID windowID)

 *

 * \brief Destroy a window.

 */

extern DECLSPEC void SDLCALL SDL_DestroyWindow(SDL_WindowID windowID);

/**

 * \fn int SDL_GetNumRenderDrivers(void)

 *

 * \brief Get the number of 2D rendering drivers available for the current display.

 *

 * A render driver is a set of code that handles rendering and texture

 * management on a particular display.  Normally there is only one, but

 * some drivers may have several available with different capabilities.

 *

 * \sa SDL_GetRenderDriverInfo()

 * \sa SDL_CreateRenderer()

 */

extern DECLSPEC int SDLCALL SDL_GetNumRenderDrivers(void);

/**

 * \fn int SDL_GetRenderDriverInfo(int index, SDL_RendererInfo *info)

 *

 * \brief Get information about a specific 2D rendering driver for the current display.

 *

 * \param index The index of the driver to query information about.

 * \param info A pointer to an SDL_RendererInfo struct to be filled with information on the rendering driver.

 *

 * \return 0 on success, -1 if the index was out of range

 *

 * \sa SDL_CreateRenderer()

 */

extern DECLSPEC int SDLCALL SDL_GetRenderDriverInfo(int index,

                                                    SDL_RendererInfo * info);

/**

 * \fn int SDL_CreateRenderer(SDL_WindowID window, int index, Uint32 flags)

 *

 * \brief Create and make active a 2D rendering context for a window.

 *

 * \param windowID The window used for rendering

 * \param index The index of the rendering driver to initialize, or -1 to initialize the first one supporting the requested flags.

 * \param flags SDL_RendererFlags

 *

 * \return 0 on success, -1 if the flags were not supported, or -2 if

 *         there isn't enough memory to support the requested flags

 *

 * \sa SDL_SelectRenderer()

 * \sa SDL_GetRendererInfo()

 * \sa SDL_DestroyRenderer()

 */

extern DECLSPEC int SDLCALL SDL_CreateRenderer(SDL_WindowID windowID,

                                               int index, Uint32 flags);

/**

 * \fn int SDL_SelectRenderer(SDL_WindowID windowID)

 *

 * \brief Select the rendering context for a particular window.

 *

 * \return 0 on success, -1 if the selected window doesn't have a

 *         rendering context.

 */

extern DECLSPEC int SDLCALL SDL_SelectRenderer(SDL_WindowID windowID);

/**

 * \fn int SDL_GetRendererInfo(SDL_RendererInfo *info)

 *

 * \brief Get information about the current rendering context.

 */

extern DECLSPEC int SDLCALL SDL_GetRendererInfo(SDL_RendererInfo * info);

/**

 * \fn SDL_TextureID SDL_CreateTexture(Uint32 format, int access, int w, int h)

 *

 * \brief Create a texture for the current rendering context.

 *

 * \param format The format of the texture

 * \param access One of the enumerated values in SDL_TextureAccess

 * \param w The width of the texture in pixels

 * \param h The height of the texture in pixels

 *

 * \return The created texture is returned, or 0 if no rendering context was active,  the format was unsupported, or the width or height were out of range.

 *

 * \sa SDL_QueryTexture()

 * \sa SDL_DestroyTexture()

 */

extern DECLSPEC SDL_TextureID SDLCALL SDL_CreateTexture(Uint32 format,

                                                        int access, int w,

                                                        int h);

/**

 * \fn SDL_TextureID SDL_CreateTextureFromSurface(Uint32 format, SDL_Surface *surface)

 *

 * \brief Create a texture from an existing surface.

 *

 * \param format The format of the texture, or 0 to pick an appropriate format

 * \param surface The surface containing pixel data used to fill the texture

 *

 * \return The created texture is returned, or 0 if no rendering context was active,  the format was unsupported, or the surface width or height were out of range.

 *

 * \note The surface is not modified or freed by this function.

 *

 * \sa SDL_QueryTexture()

 * \sa SDL_DestroyTexture()

 */

extern DECLSPEC SDL_TextureID SDLCALL SDL_CreateTextureFromSurface(Uint32

                                                                   format,

                                                                   SDL_Surface

                                                                   * surface);

/**

 * \fn int SDL_QueryTexture(SDL_TextureID textureID, Uint32 *format, int *access, int *w, int *h)

 *

 * \brief Query the attributes of a texture

 *

 * \param texture A texture to be queried

 * \param format A pointer filled in with the raw format of the texture.  The actual format may differ, but pixel transfers will use this format.

 * \param access A pointer filled in with the actual access to the texture.

 * \param w A pointer filled in with the width of the texture in pixels

 * \param h A pointer filled in with the height of the texture in pixels

 *

 * \return 0 on success, or -1 if the texture is not valid

 */

extern DECLSPEC int SDLCALL SDL_QueryTexture(SDL_TextureID textureID,

                                             Uint32 * format, int *access,

                                             int *w, int *h);

/**

 * \fn int SDL_QueryTexturePixels(SDL_TextureID textureID, void **pixels, int pitch)

 *

 * \brief Query the pixels of a texture, if the texture does not need to be locked for pixel access.

 *

 * \param texture A texture to be queried, which was created with SDL_TEXTUREACCESS_STREAMING

 * \param pixels A pointer filled with a pointer to the pixels for the texture 

 * \param pitch A pointer filled in with the pitch of the pixel data

 *

 * \return 0 on success, or -1 if the texture is not valid, or must be locked for pixel access.

 */

extern DECLSPEC int SDLCALL SDL_QueryTexturePixels(SDL_TextureID textureID,

                                                   void **pixels, int *pitch);

/**

 * \fn int SDL_SetTexturePalette(SDL_TextureID textureID, const SDL_Color * colors, int firstcolor, int ncolors)

 *

 * \brief Update an indexed texture with a color palette

 *

 * \param texture The texture to update

 * \param colors The array of RGB color data

 * \param firstcolor The first index to update

 * \param ncolors The number of palette entries to fill with the color data

 *

 * \return 0 on success, or -1 if the texture is not valid or not an indexed texture

 */

extern DECLSPEC int SDLCALL SDL_SetTexturePalette(SDL_TextureID textureID,

                                                  const SDL_Color * colors,

                                                  int firstcolor,

                                                  int ncolors);

/**

 * \fn int SDL_GetTexturePalette(SDL_TextureID textureID, SDL_Color * colors, int firstcolor, int ncolors)

 *

 * \brief Update an indexed texture with a color palette

 *

 * \param texture The texture to update

 * \param colors The array to fill with RGB color data

 * \param firstcolor The first index to retrieve

 * \param ncolors The number of palette entries to retrieve

 *

 * \return 0 on success, or -1 if the texture is not valid or not an indexed texture

 */

extern DECLSPEC int SDLCALL SDL_GetTexturePalette(SDL_TextureID textureID,

                                                  SDL_Color * colors,

                                                  int firstcolor,

                                                  int ncolors);

/**

 * \fn int SDL_SetTextureColorMod(SDL_TextureID textureID, Uint8 r, Uint8 g, Uint8 b)

 *

 * \brief Set an additional color value used in render copy operations

 *

 * \param texture The texture to update

 * \param r The red source color value multiplied into copy operations

 * \param g The green source color value multiplied into copy operations

 * \param b The blue source color value multiplied into copy operations

 *

 * \return 0 on success, or -1 if the texture is not valid or color modulation is not supported

 *

 * \sa SDL_GetTextureColorMod()

 */

extern DECLSPEC int SDLCALL SDL_SetTextureColorMod(SDL_TextureID textureID,

                                                   Uint8 r, Uint8 g, Uint8 b);

/**

 * \fn int SDL_GetTextureColorMod(SDL_TextureID textureID, Uint8 *r, Uint8 *g, Uint8 *b)

 *

 * \brief Get the additional color value used in render copy operations

 *

 * \param texture The texture to query

 * \param r A pointer filled in with the source red color value

 * \param g A pointer filled in with the source green color value

 * \param b A pointer filled in with the source blue color value

 *

 * \return 0 on success, or -1 if the texture is not valid

 *

 * \sa SDL_SetTextureColorMod()

 */

extern DECLSPEC int SDLCALL SDL_GetTextureColorMod(SDL_TextureID textureID,

                                                   Uint8 * r, Uint8 * g,

                                                   Uint8 * b);

/**

 * \fn int SDL_SetTextureAlphaMod(SDL_TextureID textureID, Uint8 alpha)

 *

 * \brief Set an additional alpha value used in render copy operations

 *

 * \param texture The texture to update

 * \param alpha The source alpha value multiplied into copy operations.

 *

 * \return 0 on success, or -1 if the texture is not valid or alpha modulation is not supported

 *