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      1 /*
      2     SDL - Simple DirectMedia Layer
      3     Copyright (C) 1997-2006 Sam Lantinga
      4 
      5     This library is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU Lesser General Public
      7     License as published by the Free Software Foundation; either
      8     version 2.1 of the License, or (at your option) any later version.
      9 
     10     This library is distributed in the hope that it will be useful,
     11     but WITHOUT ANY WARRANTY; without even the implied warranty of
     12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13     Lesser General Public License for more details.
     14 
     15     You should have received a copy of the GNU Lesser General Public
     16     License along with this library; if not, write to the Free Software
     17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     18 
     19     Sam Lantinga
     20     slouken (at) libsdl.org
     21 */
     22 #include "SDL_config.h"
     23 
     24 #ifndef _SDL_x11video_h
     25 #define _SDL_x11video_h
     26 
     27 #include <X11/Xlib.h>
     28 #include <X11/Xutil.h>
     29 #include <X11/Xatom.h>
     30 
     31 #include "SDL_mouse.h"
     32 #include "../SDL_sysvideo.h"
     33 
     34 #if SDL_VIDEO_DRIVER_X11_DGAMOUSE
     35 #include "../Xext/extensions/xf86dga.h"
     36 #endif
     37 #if SDL_VIDEO_DRIVER_X11_XINERAMA
     38 #include "../Xext/extensions/Xinerama.h"
     39 #endif
     40 #if SDL_VIDEO_DRIVER_X11_XRANDR
     41 #include <X11/extensions/Xrandr.h>
     42 #endif
     43 #if SDL_VIDEO_DRIVER_X11_VIDMODE
     44 #include "../Xext/extensions/xf86vmode.h"
     45 #endif
     46 #if SDL_VIDEO_DRIVER_X11_XME
     47 #include "../Xext/extensions/xme.h"
     48 #endif
     49 #if SDL_VIDEO_DRIVER_X11_DPMS
     50 #include <X11/extensions/dpms.h>
     51 #endif
     52 
     53 #include "SDL_x11dyn.h"
     54 
     55 /* Hidden "this" pointer for the video functions */
     56 #define _THIS	SDL_VideoDevice *this
     57 
     58 /* Private display data */
     59 struct SDL_PrivateVideoData {
     60     int local_X11;		/* Flag: true if local display */
     61     Display *X11_Display;	/* Used for events and window management */
     62     Display *GFX_Display;	/* Used for graphics and colormap stuff */
     63     Visual *SDL_Visual;		/* The visual used by our window */
     64     Window WMwindow;		/* Input window, managed by window manager */
     65     Window FSwindow;		/* Fullscreen window, completely unmanaged */
     66     Window SDL_Window;		/* Shared by both displays (no X security?) */
     67     Atom WM_DELETE_WINDOW;	/* "close-window" protocol atom */
     68     WMcursor *BlankCursor;	/* The invisible cursor */
     69     XIM X11_IM;		/* Used to communicate with the input method (IM) server */
     70     XIC X11_IC;		/* Used for retaining the state, properties, and semantics of communication with                                                  the input method (IM) server */
     71 
     72     char *SDL_windowid;		/* Flag: true if we have been passed a window */
     73 
     74     /* Direct Graphics Access extension information */
     75     int using_dga;
     76 
     77 #ifndef NO_SHARED_MEMORY
     78     /* MIT shared memory extension information */
     79     int use_mitshm;
     80     XShmSegmentInfo shminfo;
     81 #endif
     82 
     83     /* The variables used for displaying graphics */
     84     XImage *Ximage;		/* The X image for our window */
     85     GC	gc;			/* The graphic context for drawing */
     86 
     87     /* The current width and height of the fullscreen mode */
     88     int window_w;
     89     int window_h;
     90 
     91     /* Support for internal mouse warping */
     92     struct {
     93         int x;
     94         int y;
     95     } mouse_last;
     96     struct {
     97         int numerator;
     98         int denominator;
     99         int threshold;
    100     } mouse_accel;
    101     int mouse_relative;
    102 
    103     /* The current list of available video modes */
    104     SDL_Rect **modelist;
    105 
    106     /* available visuals of interest to us, sorted deepest first */
    107     struct {
    108 	Visual *visual;
    109 	int depth;		/* number of significant bits/pixel */
    110 	int bpp;		/* pixel quantum in bits */
    111     } visuals[2*5];		/* at most 2 entries for 8, 15, 16, 24, 32 */
    112     int nvisuals;
    113 
    114     Visual *vis;		/* current visual in use */
    115     int depth;			/* current visual depth (not bpp) */
    116 
    117     /* Variables used by the X11 video mode code */
    118 #if SDL_VIDEO_DRIVER_X11_XINERAMA
    119     SDL_NAME(XineramaScreenInfo) xinerama_info;
    120 #endif
    121 #if SDL_VIDEO_DRIVER_X11_XRANDR
    122     XRRScreenConfiguration* screen_config;
    123     int saved_size_id;
    124     Rotation saved_rotation;
    125 #endif
    126 #if SDL_VIDEO_DRIVER_X11_VIDMODE
    127     SDL_NAME(XF86VidModeModeInfo) saved_mode;
    128     struct {
    129         int x, y;
    130     } saved_view;
    131 #endif
    132 #if SDL_VIDEO_DRIVER_X11_XME /* XiG XME fullscreen */
    133     XiGMiscResolutionInfo saved_res;
    134 #endif
    135 
    136     int use_xinerama;
    137     int use_xrandr;
    138     int use_vidmode;
    139     int use_xme;
    140     int currently_fullscreen;
    141 
    142     int allow_screensaver;
    143 
    144     /* Automatic mode switching support (entering/leaving fullscreen) */
    145     Uint32 switch_waiting;
    146     Uint32 switch_time;
    147 
    148     /* Prevent too many XSync() calls */
    149     int blit_queued;
    150 
    151     /* Colormap handling */
    152     Colormap DisplayColormap;	/* The default display colormap */
    153     Colormap XColorMap;		/* The current window colormap */
    154     int *XPixels;		/* pixels value allocation counts */
    155     float gamma_saved[3];	/* Saved gamma values for VidMode gamma */
    156     int gamma_changed;		/* flag: has VidMode gamma been modified? */
    157 
    158     short *iconcolors;		/* List of colors used by the icon */
    159 
    160     /* Screensaver settings */
    161     int screensaver_timeout;
    162     BOOL dpms_enabled;
    163 };
    164 
    165 extern int  X11_wmXAdjust;
    166 extern int  X11_wmYAdjust;
    167 
    168 /* Old variable names */
    169 #define local_X11		(this->hidden->local_X11)
    170 #define SDL_Display		(this->hidden->X11_Display)
    171 #define GFX_Display		(this->hidden->GFX_Display)
    172 #define SDL_Screen		DefaultScreen(this->hidden->X11_Display)
    173 #define SDL_Visual		(this->hidden->vis)
    174 #define SDL_Root		RootWindow(SDL_Display, SDL_Screen)
    175 #define WMwindow		(this->hidden->WMwindow)
    176 #define FSwindow		(this->hidden->FSwindow)
    177 #define SDL_Window		(this->hidden->SDL_Window)
    178 #define WM_DELETE_WINDOW	(this->hidden->WM_DELETE_WINDOW)
    179 #define SDL_BlankCursor		(this->hidden->BlankCursor)
    180 #define SDL_IM			(this->hidden->X11_IM)
    181 #define SDL_IC			(this->hidden->X11_IC)
    182 #define SDL_windowid		(this->hidden->SDL_windowid)
    183 #define using_dga		(this->hidden->using_dga)
    184 #define use_mitshm		(this->hidden->use_mitshm)
    185 #define shminfo			(this->hidden->shminfo)
    186 #define SDL_Ximage		(this->hidden->Ximage)
    187 #define SDL_GC			(this->hidden->gc)
    188 #define window_w		(this->hidden->window_w)
    189 #define window_h		(this->hidden->window_h)
    190 #define mouse_last		(this->hidden->mouse_last)
    191 #define mouse_accel		(this->hidden->mouse_accel)
    192 #define mouse_relative		(this->hidden->mouse_relative)
    193 #define SDL_modelist		(this->hidden->modelist)
    194 #define xinerama_info		(this->hidden->xinerama_info)
    195 #define saved_mode		(this->hidden->saved_mode)
    196 #define saved_view		(this->hidden->saved_view)
    197 #define saved_res		(this->hidden->saved_res)
    198 #define screen_config		(this->hidden->screen_config)
    199 #define saved_size_id		(this->hidden->saved_size_id)
    200 #define saved_rotation		(this->hidden->saved_rotation)
    201 #define use_xinerama		(this->hidden->use_xinerama)
    202 #define use_vidmode		(this->hidden->use_vidmode)
    203 #define use_xrandr		(this->hidden->use_xrandr)
    204 #define use_xme			(this->hidden->use_xme)
    205 #define currently_fullscreen	(this->hidden->currently_fullscreen)
    206 #define switch_waiting		(this->hidden->switch_waiting)
    207 #define switch_time		(this->hidden->switch_time)
    208 #define blit_queued		(this->hidden->blit_queued)
    209 #define SDL_DisplayColormap	(this->hidden->DisplayColormap)
    210 #define SDL_PrivateColormap	(this->hidden->PrivateColormap)
    211 #define SDL_XColorMap		(this->hidden->XColorMap)
    212 #define SDL_XPixels		(this->hidden->XPixels)
    213 #define gamma_saved		(this->hidden->gamma_saved)
    214 #define gamma_changed		(this->hidden->gamma_changed)
    215 #define SDL_iconcolors		(this->hidden->iconcolors)
    216 #define screensaver_timeout	(this->hidden->screensaver_timeout)
    217 #define dpms_enabled		(this->hidden->dpms_enabled)
    218 /* Some versions of XFree86 have bugs - detect if this is one of them */
    219 #define BUGGY_XFREE86(condition, buggy_version) \
    220 ((SDL_strcmp(ServerVendor(SDL_Display), "The XFree86 Project, Inc") == 0) && \
    221  (VendorRelease(SDL_Display) condition buggy_version))
    222 
    223 #endif /* _SDL_x11video_h */
    224