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IABSD.fr/xenocara/xserver/mi/miglblt.c
matthieu
- xserver/mi/miglblt.c
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/*********************************************************** Copyright 1987, 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. Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. All Rights Reserved Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation, and that the name of Digital not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. ******************************************************************/ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #include <X11/X.h> #include <X11/Xmd.h> #include <X11/Xproto.h> #include "misc.h" #include <X11/fonts/fontstruct.h> #include <X11/fonts/libxfont2.h> #include "dixfontstr.h" #include "gcstruct.h" #include "windowstr.h" #include "scrnintstr.h" #include "pixmap.h" #include "servermd.h" #include "mi.h" /* machine-independent glyph blt. assumes that glyph bits in snf are written in bytes, have same bit order as the server's bitmap format, and are byte padded. this corresponds to the snf distributed with the sample server. get a scratch GC. in the scratch GC set alu = GXcopy, fg = 1, bg = 0 allocate a bitmap big enough to hold the largest glyph in the font validate the scratch gc with the bitmap for each glyph carefully put the bits of the glyph in a buffer, padded to the server pixmap scanline padding rules fake a call to PutImage from the buffer into the bitmap use the bitmap in a call to PushPixels */ void miPolyGlyphBlt(DrawablePtr pDrawable, GC * pGC, int x, int y, unsigned int nglyph, CharInfoPtr * ppci, /* array of character info */ void *pglyphBase /* start of array of glyphs */ ) { int width, height; PixmapPtr pPixmap; int nbyLine; /* bytes per line of padded pixmap */ FontPtr pfont; GCPtr pGCtmp; int i; int j; unsigned char *pbits; /* buffer for PutImage */ unsigned char *pb; /* temp pointer into buffer */ CharInfoPtr pci; /* current char info */ unsigned char *pglyph; /* pointer bits in glyph */ int gWidth, gHeight; /* width and height of glyph */ int nbyGlyphWidth; /* bytes per scanline of glyph */ int nbyPadGlyph; /* server padded line of glyph */ ChangeGCVal gcvals[3]; if (pGC->miTranslate) { x += pDrawable->x; y += pDrawable->y; } pfont = pGC->font; width = FONTMAXBOUNDS(pfont, rightSideBearing) - FONTMINBOUNDS(pfont, leftSideBearing); height = FONTMAXBOUNDS(pfont, ascent) + FONTMAXBOUNDS(pfont, descent); pPixmap = (*pDrawable->pScreen->CreatePixmap) (pDrawable->pScreen, width, height, 1, CREATE_PIXMAP_USAGE_SCRATCH); if (!pPixmap) return; pGCtmp = GetScratchGC(1, pDrawable->pScreen); if (!pGCtmp) { (*pDrawable->pScreen->DestroyPixmap) (pPixmap); return; } gcvals[0].val = GXcopy; gcvals[1].val = 1; gcvals[2].val = 0; ChangeGC(NullClient, pGCtmp, GCFunction | GCForeground | GCBackground, gcvals); nbyLine = BitmapBytePad(width); pbits = xallocarray(height, nbyLine); if (!pbits) { (*pDrawable->pScreen->DestroyPixmap) (pPixmap); FreeScratchGC(pGCtmp); return; } while (nglyph--) { pci = *ppci++; pglyph = FONTGLYPHBITS(pglyphBase, pci); gWidth = GLYPHWIDTHPIXELS(pci); gHeight = GLYPHHEIGHTPIXELS(pci); if (gWidth && gHeight) { nbyGlyphWidth = GLYPHWIDTHBYTESPADDED(pci); nbyPadGlyph = BitmapBytePad(gWidth); if (nbyGlyphWidth == nbyPadGlyph #if GLYPHPADBYTES != 4 && (((int) pglyph) & 3) == 0 #endif ) { pb = pglyph; } else { for (i = 0, pb = pbits; i < gHeight; i++, pb = pbits + (i * nbyPadGlyph)) for (j = 0; j < nbyGlyphWidth; j++) *pb++ = *pglyph++; pb = pbits; } if ((pGCtmp->serialNumber) != (pPixmap->drawable.serialNumber)) ValidateGC((DrawablePtr) pPixmap, pGCtmp); (*pGCtmp->ops->PutImage) ((DrawablePtr) pPixmap, pGCtmp, pPixmap->drawable.depth, 0, 0, gWidth, gHeight, 0, XYBitmap, (char *) pb); (*pGC->ops->PushPixels) (pGC, pPixmap, pDrawable, gWidth, gHeight, x + pci->metrics.leftSideBearing, y - pci->metrics.ascent); } x += pci->metrics.characterWidth; } (*pDrawable->pScreen->DestroyPixmap) (pPixmap); free(pbits); FreeScratchGC(pGCtmp); } void miImageGlyphBlt(DrawablePtr pDrawable, GC * pGC, int x, int y, unsigned int nglyph, CharInfoPtr * ppci, /* array of character info */ void *pglyphBase /* start of array of glyphs */ ) { ExtentInfoRec info; /* used by xfont2_query_glyph_extents() */ ChangeGCVal gcvals[3]; int oldAlu, oldFS; unsigned long oldFG; xRectangle backrect; xfont2_query_glyph_extents(pGC->font, ppci, (unsigned long) nglyph, &info); if (info.overallWidth >= 0) { backrect.x = x; backrect.width = info.overallWidth; } else { backrect.x = x + info.overallWidth; backrect.width = -info.overallWidth; } backrect.y = y - FONTASCENT(pGC->font); backrect.height = FONTASCENT(pGC->font) + FONTDESCENT(pGC->font); oldAlu = pGC->alu; oldFG = pGC->fgPixel; oldFS = pGC->fillStyle; /* fill in the background */ gcvals[0].val = GXcopy; gcvals[1].val = pGC->bgPixel; gcvals[2].val = FillSolid; ChangeGC(NullClient, pGC, GCFunction | GCForeground | GCFillStyle, gcvals); ValidateGC(pDrawable, pGC); (*pGC->ops->PolyFillRect) (pDrawable, pGC, 1, &backrect); /* put down the glyphs */ gcvals[0].val = oldFG; ChangeGC(NullClient, pGC, GCForeground, gcvals); ValidateGC(pDrawable, pGC); (*pGC->ops->PolyGlyphBlt) (pDrawable, pGC, x, y, nglyph, ppci, pglyphBase); /* put all the toys away when done playing */ gcvals[0].val = oldAlu; gcvals[1].val = oldFG; gcvals[2].val = oldFS; ChangeGC(NullClient, pGC, GCFunction | GCForeground | GCFillStyle, gcvals); ValidateGC(pDrawable, pGC); }