diff options
Diffstat (limited to 'mi/midispcur.c')
| -rw-r--r-- | mi/midispcur.c | 614 |
1 files changed, 614 insertions, 0 deletions
diff --git a/mi/midispcur.c b/mi/midispcur.c new file mode 100644 index 000000000..4c33d8e1d --- /dev/null +++ b/mi/midispcur.c @@ -0,0 +1,614 @@ +/* + * midispcur.c + * + * machine independent cursor display routines + */ + +/* $Xorg: midispcur.c,v 1.4 2001/02/09 02:05:20 xorgcvs Exp $ */ + +/* + +Copyright 1989, 1998 The Open Group + +Permission to use, copy, modify, distribute, and sell this software and its +documentation for any purpose is hereby granted without fee, provided that +the above copyright notice appear in all copies and that both that +copyright notice and this permission notice appear in supporting +documentation. + +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 THE +OPEN GROUP 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 Open Group 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 Open Group. +*/ + +#define NEED_EVENTS +# include "X.h" +# include "misc.h" +# include "input.h" +# include "cursorstr.h" +# include "windowstr.h" +# include "regionstr.h" +# include "dixstruct.h" +# include "scrnintstr.h" +# include "servermd.h" +# include "mipointer.h" +# include "misprite.h" +# include "gcstruct.h" + +extern WindowPtr *WindowTable; + +/* per-screen private data */ + +static int miDCScreenIndex; +static unsigned long miDCGeneration = 0; + +static Bool miDCCloseScreen(); + +typedef struct { + GCPtr pSourceGC, pMaskGC; + GCPtr pSaveGC, pRestoreGC; + GCPtr pMoveGC; + GCPtr pPixSourceGC, pPixMaskGC; + CloseScreenProcPtr CloseScreen; + PixmapPtr pSave, pTemp; +} miDCScreenRec, *miDCScreenPtr; + +/* per-cursor per-screen private data */ +typedef struct { + PixmapPtr sourceBits; /* source bits */ + PixmapPtr maskBits; /* mask bits */ +} miDCCursorRec, *miDCCursorPtr; + +/* + * sprite/cursor method table + */ + +static Bool miDCRealizeCursor(), miDCUnrealizeCursor(); +static Bool miDCPutUpCursor(), miDCSaveUnderCursor(); +static Bool miDCRestoreUnderCursor(), miDCMoveCursor(); +static Bool miDCChangeSave(); + +static miSpriteCursorFuncRec miDCFuncs = { + miDCRealizeCursor, + miDCUnrealizeCursor, + miDCPutUpCursor, + miDCSaveUnderCursor, + miDCRestoreUnderCursor, + miDCMoveCursor, + miDCChangeSave, +}; + +Bool +miDCInitialize (pScreen, screenFuncs) + ScreenPtr pScreen; + miPointerScreenFuncPtr screenFuncs; +{ + miDCScreenPtr pScreenPriv; + + if (miDCGeneration != serverGeneration) + { + miDCScreenIndex = AllocateScreenPrivateIndex (); + if (miDCScreenIndex < 0) + return FALSE; + miDCGeneration = serverGeneration; + } + pScreenPriv = (miDCScreenPtr) xalloc (sizeof (miDCScreenRec)); + if (!pScreenPriv) + return FALSE; + + /* + * initialize the entire private structure to zeros + */ + + pScreenPriv->pSourceGC = + pScreenPriv->pMaskGC = + pScreenPriv->pSaveGC = + pScreenPriv->pRestoreGC = + pScreenPriv->pMoveGC = + pScreenPriv->pPixSourceGC = + pScreenPriv->pPixMaskGC = NULL; + + pScreenPriv->pSave = pScreenPriv->pTemp = NULL; + + pScreenPriv->CloseScreen = pScreen->CloseScreen; + pScreen->CloseScreen = miDCCloseScreen; + + pScreen->devPrivates[miDCScreenIndex].ptr = (pointer) pScreenPriv; + + if (!miSpriteInitialize (pScreen, &miDCFuncs, screenFuncs)) + { + xfree ((pointer) pScreenPriv); + return FALSE; + } + return TRUE; +} + +#define tossGC(gc) (gc ? FreeGC (gc, (GContext) 0) : 0) +#define tossPix(pix) (pix ? (*pScreen->DestroyPixmap) (pix) : TRUE) + +static Bool +miDCCloseScreen (index, pScreen) + ScreenPtr pScreen; +{ + miDCScreenPtr pScreenPriv; + + pScreenPriv = (miDCScreenPtr) pScreen->devPrivates[miDCScreenIndex].ptr; + pScreen->CloseScreen = pScreenPriv->CloseScreen; + tossGC (pScreenPriv->pSourceGC); + tossGC (pScreenPriv->pMaskGC); + tossGC (pScreenPriv->pSaveGC); + tossGC (pScreenPriv->pRestoreGC); + tossGC (pScreenPriv->pMoveGC); + tossGC (pScreenPriv->pPixSourceGC); + tossGC (pScreenPriv->pPixMaskGC); + tossPix (pScreenPriv->pSave); + tossPix (pScreenPriv->pTemp); + xfree ((pointer) pScreenPriv); + return (*pScreen->CloseScreen) (index, pScreen); +} + +static Bool +miDCRealizeCursor (pScreen, pCursor) + ScreenPtr pScreen; + CursorPtr pCursor; +{ + if (pCursor->bits->refcnt <= 1) + pCursor->bits->devPriv[pScreen->myNum] = (pointer)NULL; + return TRUE; +} + +static miDCCursorPtr +miDCRealize (pScreen, pCursor) + ScreenPtr pScreen; + CursorPtr pCursor; +{ + miDCCursorPtr pPriv; + GCPtr pGC; + XID gcvals[3]; + + pPriv = (miDCCursorPtr) xalloc (sizeof (miDCCursorRec)); + if (!pPriv) + return (miDCCursorPtr)NULL; + pPriv->sourceBits = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1); + if (!pPriv->sourceBits) + { + xfree ((pointer) pPriv); + return (miDCCursorPtr)NULL; + } + pPriv->maskBits = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1); + if (!pPriv->maskBits) + { + (*pScreen->DestroyPixmap) (pPriv->sourceBits); + xfree ((pointer) pPriv); + return (miDCCursorPtr)NULL; + } + pCursor->bits->devPriv[pScreen->myNum] = (pointer) pPriv; + + /* create the two sets of bits, clipping as appropriate */ + + pGC = GetScratchGC (1, pScreen); + if (!pGC) + { + (void) miDCUnrealizeCursor (pScreen, pCursor); + return (miDCCursorPtr)NULL; + } + + ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC); + (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1, + 0, 0, pCursor->bits->width, pCursor->bits->height, + 0, XYPixmap, (char *)pCursor->bits->source); + gcvals[0] = GXand; + ChangeGC (pGC, GCFunction, gcvals); + ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC); + (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1, + 0, 0, pCursor->bits->width, pCursor->bits->height, + 0, XYPixmap, (char *)pCursor->bits->mask); + + /* mask bits -- pCursor->mask & ~pCursor->source */ + gcvals[0] = GXcopy; + ChangeGC (pGC, GCFunction, gcvals); + ValidateGC ((DrawablePtr)pPriv->maskBits, pGC); + (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1, + 0, 0, pCursor->bits->width, pCursor->bits->height, + 0, XYPixmap, (char *)pCursor->bits->mask); + gcvals[0] = GXandInverted; + ChangeGC (pGC, GCFunction, gcvals); + ValidateGC ((DrawablePtr)pPriv->maskBits, pGC); + (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1, + 0, 0, pCursor->bits->width, pCursor->bits->height, + 0, XYPixmap, (char *)pCursor->bits->source); + FreeScratchGC (pGC); + return pPriv; +} + +static Bool +miDCUnrealizeCursor (pScreen, pCursor) + ScreenPtr pScreen; + CursorPtr pCursor; +{ + miDCCursorPtr pPriv; + + pPriv = (miDCCursorPtr) pCursor->bits->devPriv[pScreen->myNum]; + if (pPriv && (pCursor->bits->refcnt <= 1)) + { + (*pScreen->DestroyPixmap) (pPriv->sourceBits); + (*pScreen->DestroyPixmap) (pPriv->maskBits); + xfree ((pointer) pPriv); + pCursor->bits->devPriv[pScreen->myNum] = (pointer)NULL; + } + return TRUE; +} + +static void +miDCPutBits (pDrawable, pPriv, sourceGC, maskGC, x, y, w, h, source, mask) + DrawablePtr pDrawable; + GCPtr sourceGC, maskGC; + int x, y; + unsigned w, h; + miDCCursorPtr pPriv; + unsigned long source, mask; +{ + XID gcvals[1]; + + if (sourceGC->fgPixel != source) + { + gcvals[0] = source; + DoChangeGC (sourceGC, GCForeground, gcvals, 0); + } + if (sourceGC->serialNumber != pDrawable->serialNumber) + ValidateGC (pDrawable, sourceGC); + (*sourceGC->ops->PushPixels) (sourceGC, pPriv->sourceBits, pDrawable, w, h, x, y); + if (maskGC->fgPixel != mask) + { + gcvals[0] = mask; + DoChangeGC (maskGC, GCForeground, gcvals, 0); + } + if (maskGC->serialNumber != pDrawable->serialNumber) + ValidateGC (pDrawable, maskGC); + (*maskGC->ops->PushPixels) (maskGC, pPriv->maskBits, pDrawable, w, h, x, y); +} + +#define EnsureGC(gc,win) (gc || miDCMakeGC(&gc, win)) + +static GCPtr +miDCMakeGC(ppGC, pWin) + GCPtr *ppGC; + WindowPtr pWin; +{ + GCPtr pGC; + int status; + XID gcvals[2]; + + gcvals[0] = IncludeInferiors; + gcvals[1] = FALSE; + pGC = CreateGC((DrawablePtr)pWin, + GCSubwindowMode|GCGraphicsExposures, gcvals, &status); + if (pGC) + (*pWin->drawable.pScreen->DrawGuarantee) (pWin, pGC, GuaranteeVisBack); + *ppGC = pGC; + return pGC; +} + +static Bool +miDCPutUpCursor (pScreen, pCursor, x, y, source, mask) + ScreenPtr pScreen; + CursorPtr pCursor; + int x, y; + unsigned long source, mask; +{ + miDCScreenPtr pScreenPriv; + miDCCursorPtr pPriv; + WindowPtr pWin; + + pPriv = (miDCCursorPtr) pCursor->bits->devPriv[pScreen->myNum]; + if (!pPriv) + { + pPriv = miDCRealize(pScreen, pCursor); + if (!pPriv) + return FALSE; + } + pScreenPriv = (miDCScreenPtr) pScreen->devPrivates[miDCScreenIndex].ptr; + pWin = WindowTable[pScreen->myNum]; + if (!EnsureGC(pScreenPriv->pSourceGC, pWin)) + return FALSE; + if (!EnsureGC(pScreenPriv->pMaskGC, pWin)) + { + FreeGC (pScreenPriv->pSourceGC, (GContext) 0); + pScreenPriv->pSourceGC = 0; + return FALSE; + } + miDCPutBits ((DrawablePtr)pWin, pPriv, + pScreenPriv->pSourceGC, pScreenPriv->pMaskGC, + x, y, pCursor->bits->width, pCursor->bits->height, + source, mask); + return TRUE; +} + +static Bool +miDCSaveUnderCursor (pScreen, x, y, w, h) + ScreenPtr pScreen; + int x, y, w, h; +{ + miDCScreenPtr pScreenPriv; + PixmapPtr pSave; + WindowPtr pWin; + GCPtr pGC; + + pScreenPriv = (miDCScreenPtr) pScreen->devPrivates[miDCScreenIndex].ptr; + pSave = pScreenPriv->pSave; + pWin = WindowTable[pScreen->myNum]; + if (!pSave || pSave->drawable.width < w || pSave->drawable.height < h) + { + if (pSave) + (*pScreen->DestroyPixmap) (pSave); + pScreenPriv->pSave = pSave = + (*pScreen->CreatePixmap) (pScreen, w, h, pScreen->rootDepth); + if (!pSave) + return FALSE; + } + if (!EnsureGC(pScreenPriv->pSaveGC, pWin)) + return FALSE; + pGC = pScreenPriv->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; +} + +static Bool +miDCRestoreUnderCursor (pScreen, x, y, w, h) + ScreenPtr pScreen; + int x, y, w, h; +{ + miDCScreenPtr pScreenPriv; + PixmapPtr pSave; + WindowPtr pWin; + GCPtr pGC; + + pScreenPriv = (miDCScreenPtr) pScreen->devPrivates[miDCScreenIndex].ptr; + pSave = pScreenPriv->pSave; + pWin = WindowTable[pScreen->myNum]; + if (!pSave) + return FALSE; + if (!EnsureGC(pScreenPriv->pRestoreGC, pWin)) + return FALSE; + pGC = pScreenPriv->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; +} + +static Bool +miDCChangeSave (pScreen, x, y, w, h, dx, dy) + ScreenPtr pScreen; + int x, y, w, h, dx, dy; +{ + miDCScreenPtr pScreenPriv; + PixmapPtr pSave; + WindowPtr pWin; + GCPtr pGC; + int sourcex, sourcey, destx, desty, copyw, copyh; + + pScreenPriv = (miDCScreenPtr) pScreen->devPrivates[miDCScreenIndex].ptr; + pSave = pScreenPriv->pSave; + pWin = WindowTable[pScreen->myNum]; + /* + * restore the bits which are about to get trashed + */ + if (!pSave) + return FALSE; + if (!EnsureGC(pScreenPriv->pRestoreGC, pWin)) + return FALSE; + pGC = pScreenPriv->pRestoreGC; + if (pWin->drawable.serialNumber != pGC->serialNumber) + ValidateGC ((DrawablePtr) pWin, pGC); + /* + * copy the old bits to the screen. + */ + if (dy > 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC, + 0, h - dy, w, dy, x + dx, y + h); + } + else if (dy < 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC, + 0, 0, w, -dy, x + dx, y + dy); + } + if (dy >= 0) + { + desty = y + dy; + sourcey = 0; + copyh = h - dy; + } + else + { + desty = y; + sourcey = - dy; + copyh = h + dy; + } + if (dx > 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC, + w - dx, sourcey, dx, copyh, x + w, desty); + } + else if (dx < 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC, + 0, sourcey, -dx, copyh, x + dx, desty); + } + if (!EnsureGC(pScreenPriv->pSaveGC, pWin)) + return FALSE; + pGC = pScreenPriv->pSaveGC; + if (pSave->drawable.serialNumber != pGC->serialNumber) + ValidateGC ((DrawablePtr) pSave, pGC); + /* + * move the bits that are still valid within the pixmap + */ + if (dx >= 0) + { + sourcex = 0; + destx = dx; + copyw = w - dx; + } + else + { + destx = 0; + sourcex = - dx; + copyw = w + dx; + } + if (dy >= 0) + { + sourcey = 0; + desty = dy; + copyh = h - dy; + } + else + { + desty = 0; + sourcey = -dy; + copyh = h + dy; + } + (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pSave, pGC, + sourcex, sourcey, copyw, copyh, destx, desty); + /* + * copy the new bits from the screen into the remaining areas of the + * pixmap + */ + if (dy > 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC, + x, y, w, dy, 0, 0); + } + else if (dy < 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC, + x, y + h + dy, w, -dy, 0, h + dy); + } + if (dy >= 0) + { + desty = dy; + sourcey = y + dy; + copyh = h - dy; + } + else + { + desty = 0; + sourcey = y; + copyh = h + dy; + } + if (dx > 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC, + x, sourcey, dx, copyh, 0, desty); + } + else if (dx < 0) + { + (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC, + x + w + dx, sourcey, -dx, copyh, w + dx, desty); + } + return TRUE; +} + +static Bool +miDCMoveCursor (pScreen, pCursor, x, y, w, h, dx, dy, source, mask) + ScreenPtr pScreen; + CursorPtr pCursor; + int x, y, w, h, dx, dy; + unsigned long source, mask; +{ + miDCCursorPtr pPriv; + miDCScreenPtr pScreenPriv; + int status; + WindowPtr pWin; + GCPtr pGC; + XID gcval = FALSE; + PixmapPtr pTemp; + + pPriv = (miDCCursorPtr) pCursor->bits->devPriv[pScreen->myNum]; + if (!pPriv) + { + pPriv = miDCRealize(pScreen, pCursor); + if (!pPriv) + return FALSE; + } + pScreenPriv = (miDCScreenPtr) pScreen->devPrivates[miDCScreenIndex].ptr; + pWin = WindowTable[pScreen->myNum]; + pTemp = pScreenPriv->pTemp; + if (!pTemp || + pTemp->drawable.width != pScreenPriv->pSave->drawable.width || + pTemp->drawable.height != pScreenPriv->pSave->drawable.height) + { + if (pTemp) + (*pScreen->DestroyPixmap) (pTemp); + pScreenPriv->pTemp = pTemp = (*pScreen->CreatePixmap) + (pScreen, w, h, pScreenPriv->pSave->drawable.depth); + if (!pTemp) + return FALSE; + } + if (!pScreenPriv->pMoveGC) + { + pScreenPriv->pMoveGC = CreateGC ((DrawablePtr)pTemp, + GCGraphicsExposures, &gcval, &status); + if (!pScreenPriv->pMoveGC) + return FALSE; + } + /* + * copy the saved area to a temporary pixmap + */ + pGC = pScreenPriv->pMoveGC; + if (pGC->serialNumber != pTemp->drawable.serialNumber) + ValidateGC ((DrawablePtr) pTemp, pGC); + (*pGC->ops->CopyArea)((DrawablePtr)pScreenPriv->pSave, + (DrawablePtr)pTemp, pGC, 0, 0, w, h, 0, 0); + + /* + * draw the cursor in the temporary pixmap + */ + if (!pScreenPriv->pPixSourceGC) + { + pScreenPriv->pPixSourceGC = CreateGC ((DrawablePtr)pTemp, + GCGraphicsExposures, &gcval, &status); + if (!pScreenPriv->pPixSourceGC) + return FALSE; + } + if (!pScreenPriv->pPixMaskGC) + { + pScreenPriv->pPixMaskGC = CreateGC ((DrawablePtr)pTemp, + GCGraphicsExposures, &gcval, &status); + if (!pScreenPriv->pPixMaskGC) + return FALSE; + } + miDCPutBits ((DrawablePtr)pTemp, pPriv, + pScreenPriv->pPixSourceGC, pScreenPriv->pPixMaskGC, + dx, dy, pCursor->bits->width, pCursor->bits->height, + source, mask); + + /* + * copy the temporary pixmap onto the screen + */ + + if (!EnsureGC(pScreenPriv->pRestoreGC, pWin)) + return FALSE; + pGC = pScreenPriv->pRestoreGC; + if (pWin->drawable.serialNumber != pGC->serialNumber) + ValidateGC ((DrawablePtr) pWin, pGC); + + (*pGC->ops->CopyArea) ((DrawablePtr) pTemp, (DrawablePtr) pWin, + pGC, + 0, 0, w, h, x, y); + return TRUE; +} |