wine/dlls/wineps.drv/builtin.c
Dan Hipschman f904723813 gdi32: Implement GetTextExtentPoint in terms of GetTextExtentExPoint
(not vice versa) for efficiency (required adding the Ex functionality
to drivers).
2006-07-12 13:34:36 +02:00

451 lines
14 KiB
C

/*
* PostScript driver builtin font functions
*
* Copyright 2002 Huw D M Davies for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <assert.h>
#include "windef.h"
#include "winbase.h"
#include "winerror.h"
#include "wingdi.h"
#include "winspool.h"
#include "psdrv.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
/***********************************************************************
* is_stock_font
*/
inline static BOOL is_stock_font( HFONT font )
{
int i;
for (i = OEM_FIXED_FONT; i <= DEFAULT_GUI_FONT; i++)
{
if (i != DEFAULT_PALETTE && font == GetStockObject(i)) return TRUE;
}
return FALSE;
}
/*******************************************************************************
* ScaleFont
*
* Scale builtin font to requested lfHeight
*
*/
inline static float Round(float f)
{
return (f > 0) ? (f + 0.5) : (f - 0.5);
}
static VOID ScaleFont(const AFM *afm, LONG lfHeight, PSFONT *font,
TEXTMETRICW *tm)
{
const WINMETRICS *wm = &(afm->WinMetrics);
USHORT usUnitsPerEm, usWinAscent, usWinDescent;
SHORT sAscender, sDescender, sLineGap, sAvgCharWidth;
TRACE("'%s' %li\n", afm->FontName, lfHeight);
if (lfHeight < 0) /* match em height */
{
font->fontinfo.Builtin.scale = - ((float)lfHeight / (float)(wm->usUnitsPerEm));
}
else /* match cell height */
{
font->fontinfo.Builtin.scale = (float)lfHeight /
(float)(wm->usWinAscent + wm->usWinDescent);
}
font->size = (INT)Round(font->fontinfo.Builtin.scale * (float)wm->usUnitsPerEm);
usUnitsPerEm = (USHORT)Round((float)(wm->usUnitsPerEm) * font->fontinfo.Builtin.scale);
sAscender = (SHORT)Round((float)(wm->sAscender) * font->fontinfo.Builtin.scale);
sDescender = (SHORT)Round((float)(wm->sDescender) * font->fontinfo.Builtin.scale);
sLineGap = (SHORT)Round((float)(wm->sLineGap) * font->fontinfo.Builtin.scale);
usWinAscent = (USHORT)Round((float)(wm->usWinAscent) * font->fontinfo.Builtin.scale);
usWinDescent = (USHORT)Round((float)(wm->usWinDescent) * font->fontinfo.Builtin.scale);
sAvgCharWidth = (SHORT)Round((float)(wm->sAvgCharWidth) * font->fontinfo.Builtin.scale);
tm->tmAscent = (LONG)usWinAscent;
tm->tmDescent = (LONG)usWinDescent;
tm->tmHeight = tm->tmAscent + tm->tmDescent;
tm->tmInternalLeading = tm->tmHeight - (LONG)usUnitsPerEm;
if (tm->tmInternalLeading < 0)
tm->tmInternalLeading = 0;
tm->tmExternalLeading =
(LONG)(sAscender - sDescender + sLineGap) - tm->tmHeight;
if (tm->tmExternalLeading < 0)
tm->tmExternalLeading = 0;
tm->tmAveCharWidth = (LONG)sAvgCharWidth;
tm->tmWeight = afm->Weight;
tm->tmItalic = (afm->ItalicAngle != 0.0);
tm->tmUnderlined = 0;
tm->tmStruckOut = 0;
tm->tmFirstChar = (WCHAR)(afm->Metrics[0].UV);
tm->tmLastChar = (WCHAR)(afm->Metrics[afm->NumofMetrics - 1].UV);
tm->tmDefaultChar = 0x001f; /* Win2K does this - FIXME? */
tm->tmBreakChar = tm->tmFirstChar; /* should be 'space' */
tm->tmPitchAndFamily = TMPF_DEVICE | TMPF_VECTOR;
if (!afm->IsFixedPitch)
tm->tmPitchAndFamily |= TMPF_FIXED_PITCH; /* yes, it's backwards */
if (wm->usUnitsPerEm != 1000)
tm->tmPitchAndFamily |= TMPF_TRUETYPE;
tm->tmCharSet = ANSI_CHARSET; /* FIXME */
tm->tmOverhang = 0;
/*
* This is kludgy. font->scale is used in several places in the driver
* to adjust PostScript-style metrics. Since these metrics have been
* "normalized" to an em-square size of 1000, font->scale needs to be
* similarly adjusted..
*/
font->fontinfo.Builtin.scale *= (float)wm->usUnitsPerEm / 1000.0;
tm->tmMaxCharWidth = (LONG)Round(
(afm->FontBBox.urx - afm->FontBBox.llx) * font->fontinfo.Builtin.scale);
font->underlinePosition = afm->UnderlinePosition * font->fontinfo.Builtin.scale;
font->underlineThickness = afm->UnderlineThickness * font->fontinfo.Builtin.scale;
font->strikeoutPosition = tm->tmAscent / 2;
font->strikeoutThickness = font->underlineThickness;
TRACE("Selected PS font '%s' size %d weight %ld.\n", afm->FontName,
font->size, tm->tmWeight );
TRACE("H = %ld As = %ld Des = %ld IL = %ld EL = %ld\n", tm->tmHeight,
tm->tmAscent, tm->tmDescent, tm->tmInternalLeading,
tm->tmExternalLeading);
}
/****************************************************************************
* PSDRV_SelectBuiltinFont
*
* Set up physDev->font for a builtin font
*
*/
BOOL PSDRV_SelectBuiltinFont(PSDRV_PDEVICE *physDev, HFONT hfont,
LOGFONTW *plf, LPSTR FaceName)
{
AFMLISTENTRY *afmle;
FONTFAMILY *family;
BOOL bd = FALSE, it = FALSE;
LONG height;
TRACE("Trying to find facename '%s'\n", FaceName);
/* Look for a matching font family */
for(family = physDev->pi->Fonts; family; family = family->next) {
if(!strcasecmp(FaceName, family->FamilyName))
break;
}
if(!family) {
/* Fallback for Window's font families to common PostScript families */
if(!strcmp(FaceName, "Arial"))
strcpy(FaceName, "Helvetica");
else if(!strcmp(FaceName, "System"))
strcpy(FaceName, "Helvetica");
else if(!strcmp(FaceName, "Times New Roman"))
strcpy(FaceName, "Times");
else if(!strcmp(FaceName, "Courier New"))
strcpy(FaceName, "Courier");
for(family = physDev->pi->Fonts; family; family = family->next) {
if(!strcmp(FaceName, family->FamilyName))
break;
}
}
/* If all else fails, use the first font defined for the printer */
if(!family)
family = physDev->pi->Fonts;
TRACE("Got family '%s'\n", family->FamilyName);
if(plf->lfItalic)
it = TRUE;
if(plf->lfWeight > 550)
bd = TRUE;
for(afmle = family->afmlist; afmle; afmle = afmle->next) {
if( (bd == (afmle->afm->Weight == FW_BOLD)) &&
(it == (afmle->afm->ItalicAngle != 0.0)) )
break;
}
if(!afmle)
afmle = family->afmlist; /* not ideal */
TRACE("Got font '%s'\n", afmle->afm->FontName);
physDev->font.fontloc = Builtin;
physDev->font.fontinfo.Builtin.afm = afmle->afm;
height = plf->lfHeight;
/* stock fonts ignore the mapping mode */
if (!is_stock_font( hfont )) {
POINT pts[2];
pts[0].x = pts[0].y = pts[1].x = 0;
pts[1].y = height;
LPtoDP(physDev->hdc, pts, 2);
height = pts[1].y - pts[0].y;
}
ScaleFont(physDev->font.fontinfo.Builtin.afm, height,
&(physDev->font), &(physDev->font.fontinfo.Builtin.tm));
/* Does anyone know if these are supposed to be reversed like this? */
physDev->font.fontinfo.Builtin.tm.tmDigitizedAspectX = physDev->logPixelsY;
physDev->font.fontinfo.Builtin.tm.tmDigitizedAspectY = physDev->logPixelsX;
return TRUE;
}
BOOL PSDRV_WriteSetBuiltinFont(PSDRV_PDEVICE *physDev)
{
return PSDRV_WriteSetFont(physDev,
physDev->font.fontinfo.Builtin.afm->FontName,
physDev->font.size, physDev->font.escapement);
}
BOOL PSDRV_WriteBuiltinGlyphShow(PSDRV_PDEVICE *physDev, LPCWSTR str, INT count)
{
int i;
LPCSTR name;
for (i = 0; i < count; ++i)
{
name = PSDRV_UVMetrics(str[i], physDev->font.fontinfo.Builtin.afm)->N->sz;
PSDRV_WriteGlyphShow(physDev, name);
}
return TRUE;
}
/***********************************************************************
* PSDRV_GetTextMetrics
*/
BOOL PSDRV_GetTextMetrics(PSDRV_PDEVICE *physDev, TEXTMETRICW *metrics)
{
assert(physDev->font.fontloc == Builtin);
memcpy(metrics, &(physDev->font.fontinfo.Builtin.tm),
sizeof(physDev->font.fontinfo.Builtin.tm));
return TRUE;
}
/******************************************************************************
* PSDRV_UVMetrics
*
* Find the AFMMETRICS for a given UV. Returns first glyph in the font
* (space?) if the font does not have a glyph for the given UV.
*/
static int MetricsByUV(const void *a, const void *b)
{
return (int)(((const AFMMETRICS *)a)->UV - ((const AFMMETRICS *)b)->UV);
}
const AFMMETRICS *PSDRV_UVMetrics(LONG UV, const AFM *afm)
{
AFMMETRICS key;
const AFMMETRICS *needle;
/*
* Ugly work-around for symbol fonts. Wine is sending characters which
* belong in the Unicode private use range (U+F020 - U+F0FF) as ASCII
* characters (U+0020 - U+00FF).
*/
if ((afm->Metrics->UV & 0xff00) == 0xf000 && UV < 0x100)
UV |= 0xf000;
key.UV = UV;
needle = bsearch(&key, afm->Metrics, afm->NumofMetrics, sizeof(AFMMETRICS),
MetricsByUV);
if (needle == NULL)
{
WARN("No glyph for U+%.4lX in %s\n", UV, afm->FontName);
needle = afm->Metrics;
}
return needle;
}
/***********************************************************************
* PSDRV_GetTextExtentExPoint
*/
BOOL PSDRV_GetTextExtentExPoint(PSDRV_PDEVICE *physDev, LPCWSTR str, INT count,
INT maxExt, LPINT lpnFit, LPINT alpDx, LPSIZE size)
{
int nfit = 0;
int i;
float width = 0.0;
float scale;
assert(physDev->font.fontloc == Builtin);
TRACE("%s %i\n", debugstr_wn(str, count), count);
scale = physDev->font.fontinfo.Builtin.scale;
for (i = 0; i < count && str[i] != '\0'; ++i)
{
float scaled_width;
width += PSDRV_UVMetrics(str[i], physDev->font.fontinfo.Builtin.afm)->WX;
scaled_width = width * scale;
if (alpDx)
alpDx[i] = scaled_width;
if (scaled_width <= maxExt)
++nfit;
}
size->cx = width * physDev->font.fontinfo.Builtin.scale;
size->cy = physDev->font.fontinfo.Builtin.tm.tmHeight;
if (lpnFit)
*lpnFit = nfit;
TRACE("cx=%li cy=%li\n", size->cx, size->cy);
return TRUE;
}
/***********************************************************************
* PSDRV_GetCharWidth
*/
BOOL PSDRV_GetCharWidth(PSDRV_PDEVICE *physDev, UINT firstChar, UINT lastChar, LPINT buffer)
{
UINT i;
assert(physDev->font.fontloc == Builtin);
TRACE("U+%.4X U+%.4X\n", firstChar, lastChar);
if (lastChar > 0xffff || firstChar > lastChar)
{
SetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
for (i = firstChar; i <= lastChar; ++i)
{
*buffer = floor( PSDRV_UVMetrics(i, physDev->font.fontinfo.Builtin.afm)->WX
* physDev->font.fontinfo.Builtin.scale + 0.5 );
TRACE("U+%.4X: %i\n", i, *buffer);
++buffer;
}
return TRUE;
}
/***********************************************************************
* PSDRV_GetFontMetric
*/
static UINT PSDRV_GetFontMetric(HDC hdc, const AFM *afm,
NEWTEXTMETRICEXW *ntmx, ENUMLOGFONTEXW *elfx)
{
/* ntmx->ntmTm is NEWTEXTMETRICW; compatible w/ TEXTMETRICW per Win32 doc */
TEXTMETRICW *tm = (TEXTMETRICW *)&(ntmx->ntmTm);
LOGFONTW *lf = &(elfx->elfLogFont);
PSFONT font;
memset(ntmx, 0, sizeof(*ntmx));
memset(elfx, 0, sizeof(*elfx));
ScaleFont(afm, -(LONG)(afm->WinMetrics.usUnitsPerEm), &font, tm);
lf->lfHeight = tm->tmHeight;
lf->lfWidth = tm->tmAveCharWidth;
lf->lfWeight = tm->tmWeight;
lf->lfItalic = tm->tmItalic;
lf->lfCharSet = tm->tmCharSet;
lf->lfPitchAndFamily = (afm->IsFixedPitch) ? FIXED_PITCH : VARIABLE_PITCH;
MultiByteToWideChar(CP_ACP, 0, afm->FamilyName, -1, lf->lfFaceName,
LF_FACESIZE);
return DEVICE_FONTTYPE;
}
/***********************************************************************
* PSDRV_EnumDeviceFonts
*/
BOOL PSDRV_EnumDeviceFonts( PSDRV_PDEVICE *physDev, LPLOGFONTW plf,
FONTENUMPROCW proc, LPARAM lp )
{
ENUMLOGFONTEXW lf;
NEWTEXTMETRICEXW tm;
BOOL b, bRet = 0;
AFMLISTENTRY *afmle;
FONTFAMILY *family;
char FaceName[LF_FACESIZE];
if( plf->lfFaceName[0] ) {
WideCharToMultiByte(CP_ACP, 0, plf->lfFaceName, -1,
FaceName, sizeof(FaceName), NULL, NULL);
TRACE("lfFaceName = '%s'\n", FaceName);
for(family = physDev->pi->Fonts; family; family = family->next) {
if(!strncmp(FaceName, family->FamilyName,
strlen(family->FamilyName)))
break;
}
if(family) {
for(afmle = family->afmlist; afmle; afmle = afmle->next) {
TRACE("Got '%s'\n", afmle->afm->FontName);
if( (b = (*proc)( &lf.elfLogFont, (TEXTMETRICW *)&tm,
PSDRV_GetFontMetric( physDev->hdc, afmle->afm, &tm, &lf ),
lp )) )
bRet = b;
else break;
}
}
} else {
TRACE("lfFaceName = NULL\n");
for(family = physDev->pi->Fonts; family; family = family->next) {
afmle = family->afmlist;
TRACE("Got '%s'\n", afmle->afm->FontName);
if( (b = (*proc)( &lf.elfLogFont, (TEXTMETRICW *)&tm,
PSDRV_GetFontMetric( physDev->hdc, afmle->afm, &tm, &lf ),
lp )) )
bRet = b;
else break;
}
}
return bRet;
}