/* * $XFree86: xc/programs/Xserver/render/miglyph.c,v 1.6 2000/12/05 03:13:31 keithp Exp $ * * Copyright � 2000 SuSE, Inc. * * 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, and that the name of SuSE not be used in advertising or * publicity pertaining to distribution of the software without specific, * written prior permission. SuSE makes no representations about the * suitability of this software for any purpose. It is provided "as is" * without express or implied warranty. * * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE * 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. * * Author: Keith Packard, SuSE, Inc. */ #include "scrnintstr.h" #include "gcstruct.h" #include "pixmapstr.h" #include "windowstr.h" #include "mi.h" #include "picturestr.h" #include "mipict.h" void miGlyphExtents (int nlist, GlyphListPtr list, GlyphPtr *glyphs, BoxPtr extents) { int x1, x2, y1, y2; int n; GlyphPtr glyph; int x, y; x = 0; y = 0; extents->x1 = MAXSHORT; extents->x2 = MINSHORT; extents->y1 = MAXSHORT; extents->y2 = MINSHORT; while (nlist--) { x += list->xOff; y += list->yOff; n = list->len; list++; while (n--) { glyph = *glyphs++; x1 = x - glyph->info.x; if (x1 < MINSHORT) x1 = MINSHORT; y1 = y - glyph->info.y; if (y1 < MINSHORT) y1 = MINSHORT; x2 = x1 + glyph->info.width; if (x2 > MAXSHORT) x2 = MAXSHORT; y2 = y1 + glyph->info.height; if (y2 > MAXSHORT) y2 = MAXSHORT; if (x1 < extents->x1) extents->x1 = x1; if (x2 > extents->x2) extents->x2 = x2; if (y1 < extents->y1) extents->y1 = y1; if (y2 > extents->y2) extents->y2 = y2; x += glyph->info.xOff; y += glyph->info.yOff; } } } #define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0) void miGlyphs (CARD8 op, PicturePtr pSrc, PicturePtr pDst, PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int nlist, GlyphListPtr list, GlyphPtr *glyphs) { PixmapPtr pPixmap = 0; PicturePtr pPicture; PixmapPtr pMaskPixmap = 0; PicturePtr pMask; ScreenPtr pScreen = pDst->pDrawable->pScreen; int width = 0, height = 0; int x, y; int xDst = list->xOff, yDst = list->yOff; int n; GlyphPtr glyph; int error; BoxRec extents; CARD32 component_alpha; if (maskFormat) { GCPtr pGC; xRectangle rect; miGlyphExtents (nlist, list, glyphs, &extents); if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1) return; width = extents.x2 - extents.x1; height = extents.y2 - extents.y1; pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, maskFormat->depth); if (!pMaskPixmap) return; component_alpha = NeedsComponent(maskFormat->format); pMask = CreatePicture (0, &pMaskPixmap->drawable, maskFormat, CPComponentAlpha, &component_alpha, serverClient, &error); if (!pMask) { (*pScreen->DestroyPixmap) (pMaskPixmap); return; } pGC = GetScratchGC (pMaskPixmap->drawable.depth, pScreen); ValidateGC (&pMaskPixmap->drawable, pGC); rect.x = 0; rect.y = 0; rect.width = width; rect.height = height; (*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect); FreeScratchGC (pGC); x = -extents.x1; y = -extents.y1; } else { pMask = pDst; x = 0; y = 0; } pPicture = 0; while (nlist--) { x += list->xOff; y += list->yOff; n = list->len; while (n--) { glyph = *glyphs++; if (!pPicture) { pPixmap = GetScratchPixmapHeader (pScreen, glyph->info.width, glyph->info.height, list->format->depth, list->format->depth, 0, (pointer) (glyph + 1)); if (!pPixmap) return; component_alpha = NeedsComponent(list->format->format); pPicture = CreatePicture (0, &pPixmap->drawable, list->format, CPComponentAlpha, &component_alpha, serverClient, &error); if (!pPicture) { FreeScratchPixmapHeader (pPixmap); return; } } (*pScreen->ModifyPixmapHeader) (pPixmap, glyph->info.width, glyph->info.height, 0, 0, -1, (pointer) (glyph + 1)); pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER; if (maskFormat) { CompositePicture (PictOpAdd, pPicture, None, pMask, 0, 0, 0, 0, x - glyph->info.x, y - glyph->info.y, glyph->info.width, glyph->info.height); } else { CompositePicture (op, pSrc, pPicture, pDst, xSrc + (x - glyph->info.x) - xDst, ySrc + (y - glyph->info.y) - yDst, 0, 0, x - glyph->info.x, y - glyph->info.y, glyph->info.width, glyph->info.height); } x += glyph->info.xOff; y += glyph->info.yOff; } list++; if (pPicture) { FreeScratchPixmapHeader (pPixmap); FreePicture ((pointer) pPicture, 0); pPicture = 0; pPixmap = 0; } } if (maskFormat) { x = extents.x1; y = extents.y1; CompositePicture (op, pSrc, pMask, pDst, xSrc + x - xDst, ySrc + y - yDst, 0, 0, x, y, width, height); FreePicture ((pointer) pMask, (XID) 0); (*pScreen->DestroyPixmap) (pMaskPixmap); } }