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