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Diffstat (limited to 'xorg-server/dbe/dbestruct.h')
| -rw-r--r-- | xorg-server/dbe/dbestruct.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/xorg-server/dbe/dbestruct.h b/xorg-server/dbe/dbestruct.h new file mode 100644 index 000000000..7d5a115ad --- /dev/null +++ b/xorg-server/dbe/dbestruct.h @@ -0,0 +1,211 @@ +/****************************************************************************** + * + * Copyright (c) 1994, 1995 Hewlett-Packard Company + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + * IN NO EVENT SHALL HEWLETT-PACKARD COMPANY BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * Except as contained in this notice, the name of the Hewlett-Packard + * Company shall not be used in advertising or otherwise to promote the + * sale, use or other dealings in this Software without prior written + * authorization from the Hewlett-Packard Company. + * + * Header file for DIX-related DBE + * + *****************************************************************************/ + +#ifndef DBE_STRUCT_H +#define DBE_STRUCT_H + + +/* INCLUDES */ + +#define NEED_DBE_PROTOCOL +#include <X11/extensions/Xdbeproto.h> +#include "windowstr.h" +#include "privates.h" + + +/* DEFINES */ + +#define DBE_SCREEN_PRIV(pScreen) ((DbeScreenPrivPtr) \ + dixLookupPrivate(&(pScreen)->devPrivates, dbeScreenPrivKey)) + +#define DBE_SCREEN_PRIV_FROM_DRAWABLE(pDrawable) \ + DBE_SCREEN_PRIV((pDrawable)->pScreen) + +#define DBE_SCREEN_PRIV_FROM_WINDOW_PRIV(pDbeWindowPriv) \ + DBE_SCREEN_PRIV((pDbeWindowPriv)->pWindow->drawable.pScreen) + +#define DBE_SCREEN_PRIV_FROM_WINDOW(pWindow) \ + DBE_SCREEN_PRIV((pWindow)->drawable.pScreen) + +#define DBE_SCREEN_PRIV_FROM_PIXMAP(pPixmap) \ + DBE_SCREEN_PRIV((pPixmap)->drawable.pScreen) + +#define DBE_SCREEN_PRIV_FROM_GC(pGC)\ + DBE_SCREEN_PRIV((pGC)->pScreen) + +#define DBE_WINDOW_PRIV(pWin) ((DbeWindowPrivPtr) \ + dixLookupPrivate(&(pWin)->devPrivates, dbeWindowPrivKey)) + +/* Initial size of the buffer ID array in the window priv. */ +#define DBE_INIT_MAX_IDS 2 + +/* Reallocation increment for the buffer ID array. */ +#define DBE_INCR_MAX_IDS 4 + +/* Marker for free elements in the buffer ID array. */ +#define DBE_FREE_ID_ELEMENT 0 + + +/* TYPEDEFS */ + +/* Record used to pass swap information between DIX and DDX swapping + * procedures. + */ +typedef struct _DbeSwapInfoRec +{ + WindowPtr pWindow; + unsigned char swapAction; + +} DbeSwapInfoRec, *DbeSwapInfoPtr; + +/* + ****************************************************************************** + ** Per-window data + ****************************************************************************** + */ + +typedef struct _DbeWindowPrivRec +{ + /* A pointer to the window with which the DBE window private (buffer) is + * associated. + */ + WindowPtr pWindow; + + /* Last known swap action for this buffer. Legal values for this field + * are XdbeUndefined, XdbeBackground, XdbeUntouched, and XdbeCopied. + */ + unsigned char swapAction; + + /* Last known buffer size. + */ + unsigned short width, height; + + /* Coordinates used for static gravity when the window is positioned. + */ + short x, y; + + /* Number of XIDs associated with this buffer. + */ + int nBufferIDs; + + /* Capacity of the current buffer ID array, IDs. */ + int maxAvailableIDs; + + /* Pointer to the array of buffer IDs. This initially points to initIDs. + * When the static limit of the initIDs array is reached, the array is + * reallocated and this pointer is set to the new array instead of initIDs. + */ + XID *IDs; + + /* Initial array of buffer IDs. We are defining the XID array within the + * window priv to optimize for data locality. In most cases, only one + * buffer will be associated with a window. Having the array declared + * here can prevent us from accessing the data in another memory page, + * possibly resulting in a page swap and loss of performance. Initially we + * will use this array to store buffer IDs. For situations where we have + * more IDs than can fit in this static array, we will allocate a larger + * array to use, possibly suffering a performance loss. + */ + XID initIDs[DBE_INIT_MAX_IDS]; + + /* Device-specific private information. + */ + PrivateRec *devPrivates; + +} DbeWindowPrivRec, *DbeWindowPrivPtr; + + +/* + ****************************************************************************** + ** Per-screen data + ****************************************************************************** + */ + +typedef struct _DbeScreenPrivRec +{ + /* Resources created by DIX to be used by DDX */ + RESTYPE dbeDrawableResType; + RESTYPE dbeWindowPrivResType; + + /* Private indices created by DIX to be used by DDX */ + DevPrivateKey dbeScreenPrivKey; + DevPrivateKey dbeWindowPrivKey; + + /* Wrapped functions + * It is the responsibilty of the DDX layer to wrap PositionWindow(). + * DbeExtensionInit wraps DestroyWindow(). + */ + PositionWindowProcPtr PositionWindow; + DestroyWindowProcPtr DestroyWindow; + + /* Per-screen DIX routines */ + Bool (*SetupBackgroundPainter)( + WindowPtr /*pWin*/, + GCPtr /*pGC*/ +); + + /* Per-screen DDX routines */ + Bool (*GetVisualInfo)( + ScreenPtr /*pScreen*/, + XdbeScreenVisualInfo * /*pVisInfo*/ +); + int (*AllocBackBufferName)( + WindowPtr /*pWin*/, + XID /*bufId*/, + int /*swapAction*/ +); + int (*SwapBuffers)( + ClientPtr /*client*/, + int * /*pNumWindows*/, + DbeSwapInfoPtr /*swapInfo*/ +); + void (*BeginIdiom)( + ClientPtr /*client*/ +); + void (*EndIdiom)( + ClientPtr /*client*/ +); + void (*WinPrivDelete)( + DbeWindowPrivPtr /*pDbeWindowPriv*/, + XID /*bufId*/ +); + void (*ResetProc)( + ScreenPtr /*pScreen*/ +); + + /* Device-specific private information. + */ + PrivateRec *devPrivates; + +} DbeScreenPrivRec, *DbeScreenPrivPtr; + +#endif /* DBE_STRUCT_H */ |