/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2010 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

*/

#include "SDL_config.h"

#ifndef _SDL_sysvideo_h

#define _SDL_sysvideo_h

#include "SDL_mouse.h"

#include "SDL_keysym.h"

#include "SDL_shape.h"

/* The SDL video driver */

typedef struct SDL_Renderer SDL_Renderer;

typedef struct SDL_RenderDriver SDL_RenderDriver;

typedef struct SDL_WindowShaper SDL_WindowShaper;

typedef struct SDL_ShapeDriver SDL_ShapeDriver;

typedef struct SDL_VideoDisplay SDL_VideoDisplay;

typedef struct SDL_VideoDevice SDL_VideoDevice;

/* Define the SDL texture structure */

struct SDL_Texture

{

    const void *magic;

    Uint32 format;              /**< The pixel format of the texture */

    int access;                 /**< SDL_TextureAccess */

    int w;                      /**< The width of the texture */

    int h;                      /**< The height of the texture */

    int modMode;                /**< The texture modulation mode */

    int blendMode;              /**< The texture blend mode */

    int scaleMode;              /**< The texture scale mode */

    Uint8 r, g, b, a;           /**< Texture modulation values */

    SDL_Renderer *renderer;

    void *driverdata;           /**< Driver specific texture representation */

    SDL_Texture *prev;

    SDL_Texture *next;

};

/* Define the SDL renderer structure */

struct SDL_Renderer

{

    int (*ActivateRenderer) (SDL_Renderer * renderer);

    int (*DisplayModeChanged) (SDL_Renderer * renderer);

    int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);

    int (*QueryTexturePixels) (SDL_Renderer * renderer, SDL_Texture * texture,

                               void **pixels, int *pitch);

    int (*SetTexturePalette) (SDL_Renderer * renderer, SDL_Texture * texture,

                              const SDL_Color * colors, int firstcolor,

                              int ncolors);

    int (*GetTexturePalette) (SDL_Renderer * renderer, SDL_Texture * texture,

                              SDL_Color * colors, int firstcolor,

                              int ncolors);

    int (*SetTextureColorMod) (SDL_Renderer * renderer,

                               SDL_Texture * texture);

    int (*SetTextureAlphaMod) (SDL_Renderer * renderer,

                               SDL_Texture * texture);

    int (*SetTextureBlendMode) (SDL_Renderer * renderer,

                                SDL_Texture * texture);

    int (*SetTextureScaleMode) (SDL_Renderer * renderer,

                                SDL_Texture * texture);

    int (*UpdateTexture) (SDL_Renderer * renderer, SDL_Texture * texture,

                          const SDL_Rect * rect, const void *pixels,

                          int pitch);

    int (*LockTexture) (SDL_Renderer * renderer, SDL_Texture * texture,

                        const SDL_Rect * rect, int markDirty, void **pixels,

                        int *pitch);

    void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);

    void (*DirtyTexture) (SDL_Renderer * renderer, SDL_Texture * texture,

                          int numrects, const SDL_Rect * rects);

    int (*SetDrawColor) (SDL_Renderer * renderer);

    int (*SetDrawBlendMode) (SDL_Renderer * renderer);

    int (*RenderClear) (SDL_Renderer * renderer);

    int (*RenderDrawPoints) (SDL_Renderer * renderer, const SDL_Point * points,

                             int count);

    int (*RenderDrawLines) (SDL_Renderer * renderer, const SDL_Point * points,

                            int count);

    int (*RenderDrawRects) (SDL_Renderer * renderer, const SDL_Rect ** rects,

                            int count);

    int (*RenderFillRects) (SDL_Renderer * renderer, const SDL_Rect ** rects,

                            int count);

    int (*RenderCopy) (SDL_Renderer * renderer, SDL_Texture * texture,

                       const SDL_Rect * srcrect, const SDL_Rect * dstrect);

    int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,

                             Uint32 format, void * pixels, int pitch);

    int (*RenderWritePixels) (SDL_Renderer * renderer, const SDL_Rect * rect,

                              Uint32 format, const void * pixels, int pitch);

    void (*RenderPresent) (SDL_Renderer * renderer);

    void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);

    void (*DestroyRenderer) (SDL_Renderer * renderer);

    /* The current renderer info */

    SDL_RendererInfo info;

    /* The window associated with the renderer */

    SDL_Window *window;

    /* The list of textures */

    SDL_Texture *textures;

    Uint8 r, g, b, a;                   /**< Color for drawing operations values */

    int blendMode;                      /**< The drawing blend mode */

    void *driverdata;

};

/* Define the SDL render driver structure */

struct SDL_RenderDriver

{

    SDL_Renderer *(*CreateRenderer) (SDL_Window * window, Uint32 flags);

    /* Info about the renderer capabilities */

    SDL_RendererInfo info;

};

/* Define the SDL window-shaper structure */

struct SDL_WindowShaper

{   

    /* The window associated with the shaper */

    SDL_Window *window;

    /* The user's specified coordinates for the window, for once we give it a shape. */

    Uint32 userx,usery;

    /* The parameters for shape calculation. */

    SDL_WindowShapeMode mode;

    /* Has this window been assigned a shape? */

    SDL_bool hasshape;

    void *driverdata;

};

/* Define the SDL shape driver structure */

struct SDL_ShapeDriver

{

    SDL_WindowShaper *(*CreateShaper)(SDL_Window * window);

    int (*SetWindowShape)(SDL_WindowShaper *shaper,SDL_Surface *shape,SDL_WindowShapeMode *shape_mode);

    int (*ResizeWindowShape)(SDL_Window *window);

};

/* Define the SDL window structure, corresponding to toplevel windows */

struct SDL_Window

{

    const void *magic;

    Uint32 id;

    char *title;

    int x, y;

    int w, h;

    Uint32 flags;

    SDL_VideoDisplay *display;

    SDL_Renderer *renderer;

    SDL_DisplayMode fullscreen_mode;

    SDL_WindowShaper *shaper;

    void *userdata;

    void *driverdata;

    SDL_Window *prev;

    SDL_Window *next;

};

#define FULLSCREEN_VISIBLE(W) \

    (((W)->flags & SDL_WINDOW_FULLSCREEN) && \

     ((W)->flags & SDL_WINDOW_SHOWN) && \

     !((W)->flags & SDL_WINDOW_MINIMIZED))

/*

 * Define the SDL display structure This corresponds to physical monitors

 * attached to the system.

 */

struct SDL_VideoDisplay

{

    int max_display_modes;

    int num_display_modes;

    SDL_DisplayMode *display_modes;

    SDL_DisplayMode desktop_mode;

    SDL_DisplayMode current_mode;

    SDL_bool updating_fullscreen;

    SDL_Palette *palette;

    Uint16 *gamma;

    Uint16 *saved_gamma;        /* (just offset into gamma) */

    int num_render_drivers;

    SDL_RenderDriver *render_drivers;

    SDL_Window *windows;

    SDL_Window *fullscreen_window;

    SDL_Renderer *current_renderer;

    SDL_VideoDevice *device;

    void *driverdata;

};

/* Define the SDL video driver structure */

#define _THIS	SDL_VideoDevice *_this

struct SDL_VideoDevice

{

    /* * * */

    /* The name of this video driver */

    const char *name;

    /* * * */

    /* Initialization/Query functions */

    /*

     * Initialize the native video subsystem, filling in the list of

     * displays for this driver, returning 0 or -1 if there's an error.

     */

    int (*VideoInit) (_THIS);

    /*

     * Reverse the effects VideoInit() -- called if VideoInit() fails or

     * if the application is shutting down the video subsystem.

     */

    void (*VideoQuit) (_THIS);

    /* * * */

    /*

     * Display functions

     */

    /*

     * Get the bounds of a display

     */

    int (*GetDisplayBounds) (_THIS, SDL_VideoDisplay * display, SDL_Rect * rect);

    /*

     * Get a list of the available display modes. e.g.

     * SDL_AddDisplayMode(_this->current_display, mode)

     */

    void (*GetDisplayModes) (_THIS, SDL_VideoDisplay * display);

    /*

     * Setting the display mode is independent of creating windows, so

     * when the display mode is changed, all existing windows should have

     * their data updated accordingly, including the display surfaces

     * associated with them.

     */

    int (*SetDisplayMode) (_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode);

    /* Set the color entries of the display palette */

    int (*SetDisplayPalette) (_THIS, SDL_VideoDisplay * display, SDL_Palette * palette);

    /* Get the color entries of the display palette */

    int (*GetDisplayPalette) (_THIS, SDL_VideoDisplay * display, SDL_Palette * palette);

    /* Set the gamma ramp */

    int (*SetDisplayGammaRamp) (_THIS, SDL_VideoDisplay * display, Uint16 * ramp);

    /* Get the gamma ramp */

    int (*GetDisplayGammaRamp) (_THIS, SDL_VideoDisplay * display, Uint16 * ramp);

    /* * * */

    /*

     * Window functions

     */

    int (*CreateWindow) (_THIS, SDL_Window * window);

    int (*CreateWindowFrom) (_THIS, SDL_Window * window, const void *data);

    void (*SetWindowTitle) (_THIS, SDL_Window * window);

    void (*SetWindowIcon) (_THIS, SDL_Window * window, SDL_Surface * icon);

    void (*SetWindowPosition) (_THIS, SDL_Window * window);

    void (*SetWindowSize) (_THIS, SDL_Window * window);

    void (*ShowWindow) (_THIS, SDL_Window * window);

    void (*HideWindow) (_THIS, SDL_Window * window);

    void (*RaiseWindow) (_THIS, SDL_Window * window);

    void (*MaximizeWindow) (_THIS, SDL_Window * window);

    void (*MinimizeWindow) (_THIS, SDL_Window * window);

    void (*RestoreWindow) (_THIS, SDL_Window * window);

    void (*SetWindowGrab) (_THIS, SDL_Window * window);

    void (*DestroyWindow) (_THIS, SDL_Window * window);

    /* * * */

    /*

     * Shaped-window functions

     */

    SDL_ShapeDriver shape_driver;

    /* Get some platform dependent window information */

      SDL_bool(*GetWindowWMInfo) (_THIS, SDL_Window * window,

                                  struct SDL_SysWMinfo * info);

    /* * * */

    /*

     * OpenGL support

     */

    int (*GL_LoadLibrary) (_THIS, const char *path);

    void *(*GL_GetProcAddress) (_THIS, const char *proc);

    void (*GL_UnloadLibrary) (_THIS);

      SDL_GLContext(*GL_CreateContext) (_THIS, SDL_Window * window);

    int (*GL_MakeCurrent) (_THIS, SDL_Window * window, SDL_GLContext context);

    int (*GL_SetSwapInterval) (_THIS, int interval);

    int (*GL_GetSwapInterval) (_THIS);

    void (*GL_SwapWindow) (_THIS, SDL_Window * window);

    void (*GL_DeleteContext) (_THIS, SDL_GLContext context);

    /* * * */

    /*

     * Event manager functions

     */

    void (*PumpEvents) (_THIS);

    /* Suspend the screensaver */

    void (*SuspendScreenSaver) (_THIS);

    /* Text input */

    void (*StartTextInput) (_THIS);

    void (*StopTextInput) (_THIS);

    void (*SetTextInputRect) (_THIS, SDL_Rect *rect);

    /* * * */

    /* Data common to all drivers */

    SDL_bool suspend_screensaver;

    int num_displays;

    SDL_VideoDisplay *displays;

    int current_display;

    Uint8 window_magic;

    Uint8 texture_magic;

    Uint32 next_object_id;

    /* * * */

    /* Data used by the GL drivers */

    struct

    {

        int red_size;

        int green_size;

        int blue_size;

        int alpha_size;

        int depth_size;

        int buffer_size;

        int stencil_size;

        int double_buffer;

        int accum_red_size;

        int accum_green_size;

        int accum_blue_size;

        int accum_alpha_size;

        int stereo;

        int multisamplebuffers;

        int multisamplesamples;

        int accelerated;

        int major_version;

        int minor_version;

        int retained_backing;

        int driver_loaded;

        char driver_path[256];

        void *dll_handle;

    } gl_config;

    /* * * */

    /* Data private to this driver */

    void *driverdata;

    struct SDL_GLDriverData *gl_data;

#if SDL_VIDEO_DRIVER_PANDORA

    struct SDL_PrivateGLESData *gles_data;

#endif

    /* * * */

    /* The function used to dispose of this structure */

    void (*free) (_THIS);

};

typedef struct VideoBootStrap

{

    const char *name;

    const char *desc;

    int (*available) (void);

    SDL_VideoDevice *(*create) (int devindex);

} VideoBootStrap;

#if SDL_VIDEO_DRIVER_COCOA

extern VideoBootStrap COCOA_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_X11

extern VideoBootStrap X11_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_FBCON

extern VideoBootStrap FBCON_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_DIRECTFB

extern VideoBootStrap DirectFB_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_PS3

extern VideoBootStrap PS3_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_SVGALIB

extern VideoBootStrap SVGALIB_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_GAPI

extern VideoBootStrap GAPI_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_WIN32

extern VideoBootStrap WIN32_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_BWINDOW

extern VideoBootStrap BWINDOW_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_PHOTON

extern VideoBootStrap photon_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_QNXGF

extern VideoBootStrap qnxgf_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_EPOC

extern VideoBootStrap EPOC_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_RISCOS

extern VideoBootStrap RISCOS_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_UIKIT

extern VideoBootStrap UIKIT_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_DUMMY

extern VideoBootStrap DUMMY_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_NDS

extern VideoBootStrap NDS_bootstrap;

#endif

#if SDL_VIDEO_DRIVER_PANDORA

extern VideoBootStrap PND_bootstrap;

#endif

#define SDL_CurrentDisplay	(&_this->displays[_this->current_display])

#define SDL_CurrentRenderer	(SDL_CurrentDisplay->current_renderer)

extern SDL_VideoDevice *SDL_GetVideoDevice();

extern int SDL_AddBasicVideoDisplay(const SDL_DisplayMode * desktop_mode);

extern int SDL_AddVideoDisplay(const SDL_VideoDisplay * display);

extern SDL_bool SDL_AddDisplayMode(SDL_VideoDisplay *display, const SDL_DisplayMode * mode);

extern int SDL_GetNumDisplayModesForDisplay(SDL_VideoDisplay * display);

extern int SDL_GetDisplayModeForDisplay(SDL_VideoDisplay * display, int index, SDL_DisplayMode * mode);

extern int SDL_GetDesktopDisplayModeForDisplay(SDL_VideoDisplay * display, SDL_DisplayMode * mode);

extern int SDL_GetCurrentDisplayModeForDisplay(SDL_VideoDisplay * display, SDL_DisplayMode * mode);

extern SDL_DisplayMode * SDL_GetClosestDisplayModeForDisplay(SDL_VideoDisplay * display, const SDL_DisplayMode * mode, SDL_DisplayMode * closest);

extern int SDL_SetDisplayModeForDisplay(SDL_VideoDisplay * display, const SDL_DisplayMode * mode);

extern int SDL_SetPaletteForDisplay(SDL_VideoDisplay * display, const SDL_Color * colors, int firstcolor, int ncolors);

extern int SDL_GetPaletteForDisplay(SDL_VideoDisplay * display, SDL_Color * colors, int firstcolor, int ncolors);

extern int SDL_SetGammaRampForDisplay(SDL_VideoDisplay * display, const Uint16 * red, const Uint16 * green, const Uint16 * blue);

extern int SDL_GetGammaRampForDisplay(SDL_VideoDisplay * display, Uint16 * red, Uint16 * green, Uint16 * blue);

extern void SDL_AddRenderDriver(SDL_VideoDisplay *display, const SDL_RenderDriver * driver);

extern int SDL_RecreateWindow(SDL_Window * window, Uint32 flags);

extern void SDL_OnWindowShown(SDL_Window * window);

extern void SDL_OnWindowHidden(SDL_Window * window);

extern void SDL_OnWindowResized(SDL_Window * window);

extern void SDL_OnWindowMinimized(SDL_Window * window);

extern void SDL_OnWindowRestored(SDL_Window * window);

extern void SDL_OnWindowFocusGained(SDL_Window * window);

extern void SDL_OnWindowFocusLost(SDL_Window * window);

extern SDL_Window * SDL_GetFocusWindow(void);

#endif /* _SDL_sysvideo_h */

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