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Initial revision
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Kaleb Keithley
parent
ded6147bfb
commit
9508a382f8
982 changed files with 479777 additions and 0 deletions
239
render/miglyph.c
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239
render/miglyph.c
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/*
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* $XFree86: xc/programs/Xserver/render/miglyph.c,v 1.6 2000/12/05 03:13:31 keithp Exp $
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*
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* Copyright © 2000 SuSE, Inc.
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*
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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, and that the name of SuSE not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. SuSE makes no representations about the
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* suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
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* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Author: Keith Packard, SuSE, Inc.
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*/
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#include "scrnintstr.h"
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#include "gcstruct.h"
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#include "pixmapstr.h"
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#include "windowstr.h"
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#include "mi.h"
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#include "picturestr.h"
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#include "mipict.h"
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void
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miGlyphExtents (int nlist,
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GlyphListPtr list,
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GlyphPtr *glyphs,
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BoxPtr extents)
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{
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int x1, x2, y1, y2;
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int n;
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GlyphPtr glyph;
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int x, y;
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x = 0;
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y = 0;
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extents->x1 = MAXSHORT;
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extents->x2 = MINSHORT;
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extents->y1 = MAXSHORT;
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extents->y2 = MINSHORT;
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while (nlist--)
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{
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x += list->xOff;
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y += list->yOff;
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n = list->len;
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list++;
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while (n--)
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{
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glyph = *glyphs++;
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x1 = x - glyph->info.x;
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if (x1 < MINSHORT)
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x1 = MINSHORT;
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y1 = y - glyph->info.y;
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if (y1 < MINSHORT)
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y1 = MINSHORT;
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x2 = x1 + glyph->info.width;
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if (x2 > MAXSHORT)
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x2 = MAXSHORT;
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y2 = y1 + glyph->info.height;
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if (y2 > MAXSHORT)
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y2 = MAXSHORT;
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if (x1 < extents->x1)
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extents->x1 = x1;
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if (x2 > extents->x2)
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extents->x2 = x2;
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if (y1 < extents->y1)
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extents->y1 = y1;
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if (y2 > extents->y2)
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extents->y2 = y2;
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x += glyph->info.xOff;
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y += glyph->info.yOff;
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}
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}
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}
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#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
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void
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miGlyphs (CARD8 op,
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PicturePtr pSrc,
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PicturePtr pDst,
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PictFormatPtr maskFormat,
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INT16 xSrc,
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INT16 ySrc,
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int nlist,
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GlyphListPtr list,
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GlyphPtr *glyphs)
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{
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PixmapPtr pPixmap = 0;
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PicturePtr pPicture;
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PixmapPtr pMaskPixmap = 0;
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PicturePtr pMask;
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ScreenPtr pScreen = pDst->pDrawable->pScreen;
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int width = 0, height = 0;
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int x, y;
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int xDst = list->xOff, yDst = list->yOff;
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int n;
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GlyphPtr glyph;
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int error;
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BoxRec extents;
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CARD32 component_alpha;
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if (maskFormat)
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{
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GCPtr pGC;
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xRectangle rect;
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miGlyphExtents (nlist, list, glyphs, &extents);
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if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
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return;
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width = extents.x2 - extents.x1;
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height = extents.y2 - extents.y1;
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pMaskPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, maskFormat->depth);
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if (!pMaskPixmap)
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return;
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component_alpha = NeedsComponent(maskFormat->format);
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pMask = CreatePicture (0, &pMaskPixmap->drawable,
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maskFormat, CPComponentAlpha, &component_alpha,
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serverClient, &error);
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if (!pMask)
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{
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(*pScreen->DestroyPixmap) (pMaskPixmap);
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return;
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}
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pGC = GetScratchGC (pMaskPixmap->drawable.depth, pScreen);
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ValidateGC (&pMaskPixmap->drawable, pGC);
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rect.x = 0;
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rect.y = 0;
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rect.width = width;
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rect.height = height;
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(*pGC->ops->PolyFillRect) (&pMaskPixmap->drawable, pGC, 1, &rect);
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FreeScratchGC (pGC);
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x = -extents.x1;
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y = -extents.y1;
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}
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else
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{
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pMask = pDst;
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x = 0;
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y = 0;
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}
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pPicture = 0;
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while (nlist--)
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{
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x += list->xOff;
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y += list->yOff;
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n = list->len;
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while (n--)
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{
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glyph = *glyphs++;
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if (!pPicture)
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{
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pPixmap = GetScratchPixmapHeader (pScreen, glyph->info.width, glyph->info.height,
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list->format->depth,
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list->format->depth,
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0, (pointer) (glyph + 1));
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if (!pPixmap)
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return;
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component_alpha = NeedsComponent(list->format->format);
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pPicture = CreatePicture (0, &pPixmap->drawable, list->format,
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CPComponentAlpha, &component_alpha,
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serverClient, &error);
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if (!pPicture)
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{
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FreeScratchPixmapHeader (pPixmap);
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return;
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}
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}
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(*pScreen->ModifyPixmapHeader) (pPixmap,
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glyph->info.width, glyph->info.height,
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0, 0, -1, (pointer) (glyph + 1));
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pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
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if (maskFormat)
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{
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CompositePicture (PictOpAdd,
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pPicture,
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None,
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pMask,
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0, 0,
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0, 0,
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x - glyph->info.x,
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y - glyph->info.y,
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glyph->info.width,
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glyph->info.height);
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}
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else
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{
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CompositePicture (op,
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pSrc,
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pPicture,
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pDst,
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xSrc + (x - glyph->info.x) - xDst,
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ySrc + (y - glyph->info.y) - yDst,
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0, 0,
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x - glyph->info.x,
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y - glyph->info.y,
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glyph->info.width,
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glyph->info.height);
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}
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x += glyph->info.xOff;
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y += glyph->info.yOff;
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}
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list++;
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if (pPicture)
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{
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FreeScratchPixmapHeader (pPixmap);
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FreePicture ((pointer) pPicture, 0);
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pPicture = 0;
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pPixmap = 0;
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}
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}
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if (maskFormat)
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{
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x = extents.x1;
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y = extents.y1;
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CompositePicture (op,
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pSrc,
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pMask,
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pDst,
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xSrc + x - xDst,
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ySrc + y - yDst,
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0, 0,
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x, y,
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width, height);
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FreePicture ((pointer) pMask, (XID) 0);
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(*pScreen->DestroyPixmap) (pMaskPixmap);
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}
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}
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