585 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			585 lines
		
	
	
		
			15 KiB
		
	
	
	
		
			C
		
	
	
	
/*
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 * midispcur.c
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 *
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 * machine independent cursor display routines
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 */
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/*
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Copyright 1989, 1998  The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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# include   <X11/X.h>
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# include   "misc.h"
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# include   "input.h"
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# include   "cursorstr.h"
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# include   "windowstr.h"
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# include   "regionstr.h"
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# include   "dixstruct.h"
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# include   "scrnintstr.h"
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# include   "servermd.h"
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# include   "mipointer.h"
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# include   "misprite.h"
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# include   "gcstruct.h"
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#ifdef ARGB_CURSOR
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# include   "picturestr.h"
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#endif
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# include "inputstr.h"
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/* per-screen private data */
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static DevPrivateKeyRec miDCScreenKeyRec;
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#define miDCScreenKey (&miDCScreenKeyRec)
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static DevScreenPrivateKeyRec miDCCursorBitsKeyRec;
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#define miDCCursorBitsKey (&miDCCursorBitsKeyRec)
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static DevScreenPrivateKeyRec miDCDeviceKeyRec;
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#define miDCDeviceKey (&miDCDeviceKeyRec)
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static Bool	miDCCloseScreen(int index, ScreenPtr pScreen);
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/* per device private data */
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typedef struct {
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    GCPtr	    pSourceGC, pMaskGC;
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    GCPtr	    pSaveGC, pRestoreGC;
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    PixmapPtr	    pSave;
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#ifdef ARGB_CURSOR
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    PicturePtr	    pRootPicture;
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#endif
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} miDCBufferRec, *miDCBufferPtr;
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#define miGetDCDevice(dev, screen) \
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 ((DevHasCursor(dev)) ? \
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  (miDCBufferPtr)dixLookupScreenPrivate(&dev->devPrivates, miDCDeviceKey, screen) : \
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  (miDCBufferPtr)dixLookupScreenPrivate(&GetMaster(dev, MASTER_POINTER)->devPrivates, miDCDeviceKey, screen))
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/* 
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 * The core pointer buffer will point to the index of the virtual core pointer
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 * in the pCursorBuffers array. 
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 */
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typedef struct {
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    CloseScreenProcPtr	CloseScreen;
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} miDCScreenRec, *miDCScreenPtr;
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#define miGetDCScreen(s)	((miDCScreenPtr)(dixLookupPrivate(&(s)->devPrivates, miDCScreenKey)))
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/* per-cursor per-screen private data */
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typedef struct {
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    PixmapPtr		sourceBits;	    /* source bits */
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    PixmapPtr		maskBits;	    /* mask bits */
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#ifdef ARGB_CURSOR
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    PicturePtr		pPicture;
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#endif
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} miDCCursorRec, *miDCCursorPtr;
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Bool
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miDCInitialize (ScreenPtr pScreen, miPointerScreenFuncPtr screenFuncs)
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{
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    miDCScreenPtr   pScreenPriv;
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    if (!dixRegisterPrivateKey(&miDCScreenKeyRec, PRIVATE_SCREEN, 0) ||
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        !dixRegisterScreenPrivateKey(&miDCCursorBitsKeyRec, pScreen, PRIVATE_CURSOR_BITS, 0) ||
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        !dixRegisterScreenPrivateKey(&miDCDeviceKeyRec, pScreen, PRIVATE_DEVICE, 0))
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	return FALSE;
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    pScreenPriv = malloc(sizeof (miDCScreenRec));
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    if (!pScreenPriv)
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	return FALSE;
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    pScreenPriv->CloseScreen = pScreen->CloseScreen;
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    pScreen->CloseScreen = miDCCloseScreen;
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    dixSetPrivate(&pScreen->devPrivates, miDCScreenKey, pScreenPriv);
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    if (!miSpriteInitialize (pScreen, screenFuncs))
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    {
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	free((pointer) pScreenPriv);
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	return FALSE;
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    }
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    return TRUE;
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}
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static Bool
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miDCCloseScreen (int index, ScreenPtr pScreen)
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{
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    miDCScreenPtr   pScreenPriv;
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    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
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						  miDCScreenKey);
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    pScreen->CloseScreen = pScreenPriv->CloseScreen;
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    free((pointer) pScreenPriv);
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    return (*pScreen->CloseScreen) (index, pScreen);
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}
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Bool
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miDCRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
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{
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    if (pCursor->bits->refcnt <= 1)
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	dixSetScreenPrivate(&pCursor->bits->devPrivates, miDCCursorBitsKey, pScreen, NULL);
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    return TRUE;
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}
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#ifdef ARGB_CURSOR
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#define EnsurePicture(picture,draw,win) (picture || miDCMakePicture(&picture,draw,win))
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static VisualPtr
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miDCGetWindowVisual (WindowPtr pWin)
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{
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    ScreenPtr	    pScreen = pWin->drawable.pScreen;
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    VisualID	    vid = wVisual (pWin);
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    int		    i;
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    for (i = 0; i < pScreen->numVisuals; i++)
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	if (pScreen->visuals[i].vid == vid)
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	    return &pScreen->visuals[i];
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    return 0;
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}
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static PicturePtr
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miDCMakePicture (PicturePtr *ppPicture, DrawablePtr pDraw, WindowPtr pWin)
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{
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    ScreenPtr	    pScreen = pDraw->pScreen;
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    VisualPtr	    pVisual;
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    PictFormatPtr   pFormat;
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    XID		    subwindow_mode = IncludeInferiors;
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    PicturePtr	    pPicture;
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    int		    error;
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    pVisual = miDCGetWindowVisual (pWin);
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    if (!pVisual)
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	return 0;
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    pFormat = PictureMatchVisual (pScreen, pDraw->depth, pVisual);
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    if (!pFormat)
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	return 0;
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    pPicture = CreatePicture (0, pDraw, pFormat,
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			      CPSubwindowMode, &subwindow_mode,
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			      serverClient, &error);
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    *ppPicture = pPicture;
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    return pPicture;
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}
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#endif
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static miDCCursorPtr
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miDCRealize (ScreenPtr pScreen, CursorPtr pCursor)
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{
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    miDCCursorPtr   pPriv;
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    GCPtr	    pGC;
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    ChangeGCVal	    gcvals;
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    pPriv = malloc(sizeof (miDCCursorRec));
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    if (!pPriv)
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	return NULL;
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#ifdef ARGB_CURSOR
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    if (pCursor->bits->argb)
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    {
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	PixmapPtr	pPixmap;
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	PictFormatPtr	pFormat;
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	int		error;
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	pFormat = PictureMatchFormat (pScreen, 32, PICT_a8r8g8b8);
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	if (!pFormat)
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	{
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	    free((pointer) pPriv);
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	    return NULL;
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	}
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	pPriv->sourceBits = 0;
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	pPriv->maskBits = 0;
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	pPixmap = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width,
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					    pCursor->bits->height, 32,
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					    CREATE_PIXMAP_USAGE_SCRATCH);
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	if (!pPixmap)
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	{
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	    free((pointer) pPriv);
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	    return NULL;
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	}
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	pGC = GetScratchGC (32, pScreen);
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	if (!pGC)
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	{
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	    (*pScreen->DestroyPixmap) (pPixmap);
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	    free((pointer) pPriv);
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	    return NULL;
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	}
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	ValidateGC (&pPixmap->drawable, pGC);
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	(*pGC->ops->PutImage) (&pPixmap->drawable, pGC, 32,
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			       0, 0, pCursor->bits->width,
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			       pCursor->bits->height,
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			       0, ZPixmap, (char *) pCursor->bits->argb);
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	FreeScratchGC (pGC);
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	pPriv->pPicture = CreatePicture (0, &pPixmap->drawable,
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					pFormat, 0, 0, serverClient, &error);
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        (*pScreen->DestroyPixmap) (pPixmap);
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	if (!pPriv->pPicture)
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	{
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	    free((pointer) pPriv);
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	    return NULL;
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	}
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	dixSetScreenPrivate(&pCursor->bits->devPrivates, miDCCursorBitsKey, pScreen, pPriv);
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	return pPriv;
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    }
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    pPriv->pPicture = 0;
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#endif
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    pPriv->sourceBits = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1, 0);
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    if (!pPriv->sourceBits)
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    {
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	free((pointer) pPriv);
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	return NULL;
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    }
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    pPriv->maskBits =  (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1, 0);
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    if (!pPriv->maskBits)
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    {
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	(*pScreen->DestroyPixmap) (pPriv->sourceBits);
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	free((pointer) pPriv);
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	return NULL;
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    }
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    dixSetScreenPrivate(&pCursor->bits->devPrivates, miDCCursorBitsKey, pScreen, pPriv);
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    /* create the two sets of bits, clipping as appropriate */
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    pGC = GetScratchGC (1, pScreen);
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    if (!pGC)
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    {
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	(void) miDCUnrealizeCursor (pScreen, pCursor);
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	return NULL;
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    }
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    ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC);
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    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1,
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			   0, 0, pCursor->bits->width, pCursor->bits->height,
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 			   0, XYPixmap, (char *)pCursor->bits->source);
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    gcvals.val = GXand;
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    ChangeGC (NullClient, pGC, GCFunction, &gcvals);
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    ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC);
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    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1,
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			   0, 0, pCursor->bits->width, pCursor->bits->height,
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 			   0, XYPixmap, (char *)pCursor->bits->mask);
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    /* mask bits -- pCursor->mask & ~pCursor->source */
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    gcvals.val = GXcopy;
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    ChangeGC (NullClient, pGC, GCFunction, &gcvals);
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    ValidateGC ((DrawablePtr)pPriv->maskBits, pGC);
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    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1,
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			   0, 0, pCursor->bits->width, pCursor->bits->height,
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 			   0, XYPixmap, (char *)pCursor->bits->mask);
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    gcvals.val = GXandInverted;
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    ChangeGC (NullClient, pGC, GCFunction, &gcvals);
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    ValidateGC ((DrawablePtr)pPriv->maskBits, pGC);
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    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1,
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			   0, 0, pCursor->bits->width, pCursor->bits->height,
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 			   0, XYPixmap, (char *)pCursor->bits->source);
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    FreeScratchGC (pGC);
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    return pPriv;
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}
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Bool
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miDCUnrealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
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{
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    miDCCursorPtr   pPriv;
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    pPriv = (miDCCursorPtr)dixLookupScreenPrivate(&pCursor->bits->devPrivates,
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						  miDCCursorBitsKey, pScreen);
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    if (pPriv && (pCursor->bits->refcnt <= 1))
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    {
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	if (pPriv->sourceBits)
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	    (*pScreen->DestroyPixmap) (pPriv->sourceBits);
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	if (pPriv->maskBits)
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	    (*pScreen->DestroyPixmap) (pPriv->maskBits);
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#ifdef ARGB_CURSOR
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	if (pPriv->pPicture)
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	    FreePicture (pPriv->pPicture, 0);
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#endif
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	free((pointer) pPriv);
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	dixSetScreenPrivate(&pCursor->bits->devPrivates, miDCCursorBitsKey, pScreen, NULL);
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    }
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    return TRUE;
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}
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static void
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miDCPutBits (
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    DrawablePtr	    pDrawable,
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    miDCCursorPtr   pPriv,
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    GCPtr	    sourceGC,
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    GCPtr	    maskGC,
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    int             x_org,
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    int             y_org,
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    unsigned        w,
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    unsigned        h,
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    unsigned long   source,
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    unsigned long   mask)
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{
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    ChangeGCVal gcval;
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    int     x, y;
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    if (sourceGC->fgPixel != source)
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    {
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	gcval.val = source;
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	ChangeGC (NullClient, sourceGC, GCForeground, &gcval);
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    }
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    if (sourceGC->serialNumber != pDrawable->serialNumber)
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	ValidateGC (pDrawable, sourceGC);
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    if(sourceGC->miTranslate) 
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    {
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        x = pDrawable->x + x_org;
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        y = pDrawable->y + y_org;
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    } 
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    else
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    {
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        x = x_org;
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        y = y_org;
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    }
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    (*sourceGC->ops->PushPixels) (sourceGC, pPriv->sourceBits, pDrawable, w, h, x, y);
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    if (maskGC->fgPixel != mask)
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    {
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	gcval.val = mask;
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	ChangeGC (NullClient, maskGC, GCForeground, &gcval);
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    }
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    if (maskGC->serialNumber != pDrawable->serialNumber)
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	ValidateGC (pDrawable, maskGC);
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    if(maskGC->miTranslate) 
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    {
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        x = pDrawable->x + x_org;
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        y = pDrawable->y + y_org;
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    } 
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    else
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    {
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        x = x_org;
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        y = y_org;
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    }
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    (*maskGC->ops->PushPixels) (maskGC, pPriv->maskBits, pDrawable, w, h, x, y);
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}
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static GCPtr
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miDCMakeGC(WindowPtr pWin)
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{
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    GCPtr pGC;
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    int   status;
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    XID   gcvals[2];
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    gcvals[0] = IncludeInferiors;
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    gcvals[1] = FALSE;
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    pGC = CreateGC((DrawablePtr)pWin,
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		   GCSubwindowMode|GCGraphicsExposures, gcvals, &status,
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		   (XID)0, serverClient);
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    return pGC;
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}
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Bool
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miDCPutUpCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
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                 int x, int y, unsigned long source, unsigned long mask)
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{
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    miDCCursorPtr   pPriv;
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    miDCBufferPtr   pBuffer;
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    WindowPtr	    pWin;
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    pPriv = (miDCCursorPtr)dixLookupScreenPrivate(&pCursor->bits->devPrivates,
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						  miDCCursorBitsKey, pScreen);
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    if (!pPriv)
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    {
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	pPriv = miDCRealize(pScreen, pCursor);
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	if (!pPriv)
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	    return FALSE;
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    }
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    pWin = pScreen->root;
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    pBuffer = miGetDCDevice(pDev, pScreen);
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#ifdef ARGB_CURSOR
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    if (pPriv->pPicture)
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    {
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	if (!EnsurePicture(pBuffer->pRootPicture, &pWin->drawable, pWin))
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	    return FALSE;
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	CompositePicture (PictOpOver,
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			  pPriv->pPicture,
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			  NULL,
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			  pBuffer->pRootPicture,
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			  0, 0, 0, 0, 
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			  x, y, 
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			  pCursor->bits->width,
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			  pCursor->bits->height);
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    }
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    else
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#endif
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    {
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	miDCPutBits ((DrawablePtr)pWin, pPriv,
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		     pBuffer->pSourceGC, pBuffer->pMaskGC,
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		     x, y, pCursor->bits->width, pCursor->bits->height,
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		     source, mask);
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						|
    }
 | 
						|
    return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
Bool
 | 
						|
miDCSaveUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
 | 
						|
                     int x, int y, int w, int h)
 | 
						|
{
 | 
						|
    miDCBufferPtr   pBuffer;
 | 
						|
    PixmapPtr	    pSave;
 | 
						|
    WindowPtr	    pWin;
 | 
						|
    GCPtr	    pGC;
 | 
						|
 | 
						|
    pBuffer = miGetDCDevice(pDev, pScreen);
 | 
						|
 | 
						|
    pSave = pBuffer->pSave;
 | 
						|
    pWin = pScreen->root;
 | 
						|
    if (!pSave || pSave->drawable.width < w || pSave->drawable.height < h)
 | 
						|
    {
 | 
						|
	if (pSave)
 | 
						|
	    (*pScreen->DestroyPixmap) (pSave);
 | 
						|
	pBuffer->pSave = pSave =
 | 
						|
		(*pScreen->CreatePixmap) (pScreen, w, h, pScreen->rootDepth, 0);
 | 
						|
	if (!pSave)
 | 
						|
	    return FALSE;
 | 
						|
    }
 | 
						|
 | 
						|
    pGC = pBuffer->pSaveGC;
 | 
						|
    if (pSave->drawable.serialNumber != pGC->serialNumber)
 | 
						|
	ValidateGC ((DrawablePtr) pSave, pGC);
 | 
						|
    (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
 | 
						|
			    x, y, w, h, 0, 0);
 | 
						|
    return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
Bool
 | 
						|
miDCRestoreUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
 | 
						|
                        int x, int y, int w, int h)
 | 
						|
{
 | 
						|
    miDCBufferPtr   pBuffer;
 | 
						|
    PixmapPtr	    pSave;
 | 
						|
    WindowPtr	    pWin;
 | 
						|
    GCPtr	    pGC;
 | 
						|
 | 
						|
    pBuffer = miGetDCDevice(pDev, pScreen);
 | 
						|
    pSave = pBuffer->pSave;
 | 
						|
 | 
						|
    pWin = pScreen->root;
 | 
						|
    if (!pSave)
 | 
						|
	return FALSE;
 | 
						|
 | 
						|
    pGC = pBuffer->pRestoreGC;
 | 
						|
    if (pWin->drawable.serialNumber != pGC->serialNumber)
 | 
						|
	ValidateGC ((DrawablePtr) pWin, pGC);
 | 
						|
    (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
 | 
						|
			    0, 0, w, h, x, y);
 | 
						|
    return TRUE;
 | 
						|
}
 | 
						|
 | 
						|
Bool
 | 
						|
miDCDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen)
 | 
						|
{
 | 
						|
    miDCBufferPtr   pBuffer;
 | 
						|
    WindowPtr       pWin;
 | 
						|
    int             i;
 | 
						|
 | 
						|
    if (!DevHasCursor(pDev))
 | 
						|
        return TRUE;
 | 
						|
 | 
						|
    for (i = 0; i < screenInfo.numScreens; i++)
 | 
						|
    {
 | 
						|
        pScreen = screenInfo.screens[i];
 | 
						|
 | 
						|
        pBuffer = calloc(1, sizeof(miDCBufferRec));
 | 
						|
        if (!pBuffer)
 | 
						|
            goto failure;
 | 
						|
 | 
						|
        dixSetScreenPrivate(&pDev->devPrivates, miDCDeviceKey, pScreen, pBuffer);
 | 
						|
        pWin = pScreen->root;
 | 
						|
 | 
						|
        pBuffer->pSourceGC = miDCMakeGC(pWin);
 | 
						|
        if (!pBuffer->pSourceGC)
 | 
						|
            goto failure;
 | 
						|
 | 
						|
        pBuffer->pMaskGC = miDCMakeGC(pWin);
 | 
						|
        if (!pBuffer->pMaskGC)
 | 
						|
            goto failure;
 | 
						|
 | 
						|
        pBuffer->pSaveGC = miDCMakeGC(pWin);
 | 
						|
        if (!pBuffer->pSaveGC)
 | 
						|
            goto failure;
 | 
						|
 | 
						|
        pBuffer->pRestoreGC = miDCMakeGC(pWin);
 | 
						|
        if (!pBuffer->pRestoreGC)
 | 
						|
            goto failure;
 | 
						|
 | 
						|
#ifdef ARGB_CURSOR
 | 
						|
        pBuffer->pRootPicture = NULL;
 | 
						|
#endif
 | 
						|
 | 
						|
        /* (re)allocated lazily depending on the cursor size */
 | 
						|
        pBuffer->pSave = NULL;
 | 
						|
    }
 | 
						|
 | 
						|
    return TRUE;
 | 
						|
 | 
						|
failure:
 | 
						|
 | 
						|
    miDCDeviceCleanup(pDev, pScreen);
 | 
						|
 | 
						|
    return FALSE;
 | 
						|
}
 | 
						|
 | 
						|
void
 | 
						|
miDCDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen)
 | 
						|
{
 | 
						|
    miDCBufferPtr   pBuffer;
 | 
						|
    int             i;
 | 
						|
 | 
						|
    if (DevHasCursor(pDev))
 | 
						|
    {
 | 
						|
        for (i = 0; i < screenInfo.numScreens; i++)
 | 
						|
        {
 | 
						|
            pScreen = screenInfo.screens[i];
 | 
						|
 | 
						|
            pBuffer = miGetDCDevice(pDev, pScreen);
 | 
						|
 | 
						|
            if (pBuffer)
 | 
						|
            {
 | 
						|
                if (pBuffer->pSourceGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
 | 
						|
                if (pBuffer->pMaskGC) FreeGC(pBuffer->pMaskGC, (GContext) 0);
 | 
						|
                if (pBuffer->pSaveGC) FreeGC(pBuffer->pSaveGC, (GContext) 0);
 | 
						|
                if (pBuffer->pRestoreGC) FreeGC(pBuffer->pRestoreGC, (GContext) 0);
 | 
						|
 | 
						|
#ifdef ARGB_CURSOR
 | 
						|
                /* If a pRootPicture was allocated for a root window, it
 | 
						|
                 * is freed when that root window is destroyed, so don't
 | 
						|
                 * free it again here. */
 | 
						|
#endif
 | 
						|
 | 
						|
                if (pBuffer->pSave) (*pScreen->DestroyPixmap)(pBuffer->pSave);
 | 
						|
 | 
						|
                free(pBuffer);
 | 
						|
                dixSetScreenPrivate(&pDev->devPrivates, miDCDeviceKey, pScreen, NULL);
 | 
						|
            }
 | 
						|
        }
 | 
						|
    }
 | 
						|
}
 |