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Simple font substitution and matching
svn path=/trunk/; revision=8914
This commit is contained in:
Gé van Geldorp
parent
77684eece7
commit
cdaaa65096
1 changed files with 172 additions and 75 deletions
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@ -22,7 +22,7 @@
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: text.c,v 1.85 2004/03/27 00:35:02 weiden Exp $ */
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/* $Id: text.c,v 1.86 2004/03/28 22:39:59 gvg Exp $ */
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#undef WIN32_LEAN_AND_MEAN
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@ -1057,6 +1057,7 @@ FontFamilyFillInfo(PFONTFAMILYINFO Info, PCWSTR FaceName, PFONTGDI FontGDI)
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Lf->lfHeight = TM->tmHeight;
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Lf->lfWidth = TM->tmAveCharWidth;
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Lf->lfWeight = TM->tmWeight;
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Lf->lfItalic = TM->tmItalic;
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Lf->lfPitchAndFamily = (TM->tmPitchAndFamily & 0xf1) + 1;
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Lf->lfCharSet = TM->tmCharSet;
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Lf->lfOutPrecision = OUT_STROKE_PRECIS;
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@ -2566,93 +2567,189 @@ NtGdiTextOut(
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return NtGdiExtTextOut(hDC, XStart, YStart, 0, NULL, String, Count, NULL);
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}
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static UINT FASTCALL
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GetFontScore(LOGFONTW *LogFont, PUNICODE_STRING FaceName, PFONTGDI FontGDI)
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{
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ANSI_STRING EntryFaceNameA;
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UNICODE_STRING EntryFaceNameW;
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unsigned Size;
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OUTLINETEXTMETRICW *Otm;
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LONG WeightDiff;
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NTSTATUS Status;
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UINT Score = 1;
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RtlInitAnsiString(&EntryFaceNameA, FontGDI->face->family_name);
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Status = RtlAnsiStringToUnicodeString(&EntryFaceNameW, &EntryFaceNameA, TRUE);
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if (NT_SUCCESS(Status))
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{
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if ((LF_FACESIZE - 1) * sizeof(WCHAR) < EntryFaceNameW.Length)
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{
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EntryFaceNameW.Length = (LF_FACESIZE - 1) * sizeof(WCHAR);
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EntryFaceNameW.Buffer[LF_FACESIZE - 1] = L'\0';
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}
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if (0 == RtlCompareUnicodeString(FaceName, &EntryFaceNameW, TRUE))
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{
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Score += 49;
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}
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RtlFreeUnicodeString(&EntryFaceNameW);
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}
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Size = IntGetOutlineTextMetrics(FontGDI, 0, NULL);
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Otm = ExAllocatePoolWithTag(PagedPool, Size, TAG_GDITEXT);
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if (NULL == Otm)
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{
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return Score;
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}
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IntGetOutlineTextMetrics(FontGDI, Size, Otm);
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if ((0 != LogFont->lfItalic && 0 != Otm->otmTextMetrics.tmItalic) ||
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(0 == LogFont->lfItalic && 0 == Otm->otmTextMetrics.tmItalic))
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{
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Score += 25;
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}
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if (LogFont->lfWeight < Otm->otmTextMetrics.tmWeight)
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{
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WeightDiff = Otm->otmTextMetrics.tmWeight - LogFont->lfWeight;
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}
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else
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{
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WeightDiff = LogFont->lfWeight - Otm->otmTextMetrics.tmWeight;
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}
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Score += (1000 - WeightDiff) / (1000 / 25);
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ExFreePool(Otm);
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return Score;
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}
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static VOID FASTCALL
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FindBestFontFromList(HFONT *Font, UINT *MatchScore, LOGFONTW *LogFont,
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PUNICODE_STRING FaceName, PLIST_ENTRY Head)
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{
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PLIST_ENTRY Entry;
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PFONT_ENTRY CurrentEntry;
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PFONTGDI FontGDI;
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UINT Score;
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Entry = Head->Flink;
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while (Entry != Head)
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{
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CurrentEntry = (PFONT_ENTRY) CONTAINING_RECORD(Entry, FONT_ENTRY, ListEntry);
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if (NULL == (FontGDI = AccessInternalObject((ULONG) CurrentEntry->hFont)))
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{
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Entry = Entry->Flink;
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continue;
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}
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Score = GetFontScore(LogFont, FaceName, FontGDI);
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if (*MatchScore < Score)
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{
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*Font = CurrentEntry->hFont;
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*MatchScore = Score;
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}
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Entry = Entry->Flink;
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}
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}
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static BOOLEAN FASTCALL
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SubstituteFontFamilyKey(PUNICODE_STRING FaceName,
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LPCWSTR Key)
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{
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RTL_QUERY_REGISTRY_TABLE QueryTable[2];
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NTSTATUS Status;
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UNICODE_STRING Value;
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RtlInitUnicodeString(&Value, NULL);
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QueryTable[0].QueryRoutine = NULL;
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QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT | RTL_QUERY_REGISTRY_NOEXPAND |
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RTL_QUERY_REGISTRY_REQUIRED;
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QueryTable[0].Name = FaceName->Buffer;
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QueryTable[0].EntryContext = &Value;
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QueryTable[0].DefaultType = REG_NONE;
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QueryTable[0].DefaultData = NULL;
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QueryTable[0].DefaultLength = 0;
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QueryTable[1].QueryRoutine = NULL;
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QueryTable[1].Name = NULL;
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Status = RtlQueryRegistryValues(RTL_REGISTRY_WINDOWS_NT,
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Key,
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QueryTable,
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NULL,
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NULL);
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if (NT_SUCCESS(Status))
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{
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RtlFreeUnicodeString(FaceName);
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*FaceName = Value;
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}
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return NT_SUCCESS(Status);
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}
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static void FASTCALL
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SubstituteFontFamily(PUNICODE_STRING FaceName, UINT Level)
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{
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if (10 < Level) /* Enough is enough */
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{
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return;
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}
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if (SubstituteFontFamilyKey(FaceName, L"SysFontSubstitutes") ||
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SubstituteFontFamilyKey(FaceName, L"FontSubstitutes"))
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{
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SubstituteFontFamily(FaceName, Level + 1);
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}
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}
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NTSTATUS FASTCALL
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TextIntRealizeFont(HFONT FontHandle)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PTEXTOBJ TextObj;
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UNICODE_STRING FaceName;
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PLIST_ENTRY Entry;
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PFONT_ENTRY CurrentEntry;
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PW32PROCESS Win32Process;
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BOOL Private = FALSE;
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UINT MatchScore;
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TextObj = TEXTOBJ_LockText(FontHandle);
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ASSERT(TextObj);
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if (NULL != TextObj)
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if (NULL == TextObj)
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{
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RtlInitUnicodeString(&FaceName, TextObj->logfont.lfFaceName);
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return STATUS_INVALID_HANDLE;
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}
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/* find font in private fonts */
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if (! RtlCreateUnicodeString(&FaceName, TextObj->logfont.lfFaceName))
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{
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TEXTOBJ_UnlockText(FontHandle);
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return STATUS_NO_MEMORY;
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}
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SubstituteFontFamily(&FaceName, 0);
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MatchScore = 0;
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TextObj->GDIFontHandle = NULL;
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/* First search private fonts */
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Win32Process = PsGetWin32Process();
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IntLockProcessPrivateFonts(Win32Process);
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Entry = Win32Process->PrivateFontListHead.Flink;
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while(Entry != &Win32Process->PrivateFontListHead)
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{
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CurrentEntry = (PFONT_ENTRY)CONTAINING_RECORD(Entry, FONT_ENTRY, ListEntry);
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if (0 == RtlCompareUnicodeString(&CurrentEntry->FaceName, &FaceName, TRUE))
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{
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TextObj->GDIFontHandle = CurrentEntry->hFont;
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Private = TRUE;
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goto check;
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}
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Entry = Entry->Flink;
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}
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FindBestFontFromList(&TextObj->GDIFontHandle, &MatchScore,
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&TextObj->logfont, &FaceName,
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&Win32Process->PrivateFontListHead);
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IntUnLockProcessPrivateFonts(Win32Process);
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/* find font in system fonts */
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/* Search system fonts */
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IntLockGlobalFonts;
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FindBestFontFromList(&TextObj->GDIFontHandle, &MatchScore,
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&TextObj->logfont, &FaceName,
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&FontListHead);
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IntUnLockGlobalFonts;
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Entry = FontListHead.Flink;
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while(Entry != &FontListHead)
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{
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CurrentEntry = (PFONT_ENTRY)CONTAINING_RECORD(Entry, FONT_ENTRY, ListEntry);
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if (0 == RtlCompareUnicodeString(&CurrentEntry->FaceName, &FaceName, TRUE))
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{
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TextObj->GDIFontHandle = CurrentEntry->hFont;
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break;
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}
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Entry = Entry->Flink;
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}
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check:
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if (NULL == TextObj->GDIFontHandle)
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{
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Entry = (Private ? Win32Process->PrivateFontListHead.Flink : FontListHead.Flink);
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if(Entry != (Private ? &Win32Process->PrivateFontListHead : &FontListHead))
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{
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DPRINT("Requested font %S not found, using first available font\n",
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TextObj->logfont.lfFaceName)
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CurrentEntry = (PFONT_ENTRY)CONTAINING_RECORD(Entry, FONT_ENTRY, ListEntry);
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TextObj->GDIFontHandle = CurrentEntry->hFont;
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}
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else
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{
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DPRINT1("Requested font %S not found, no fonts loaded at all\n",
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TextObj->logfont.lfFaceName);
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Status = STATUS_NOT_FOUND;
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}
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}
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if(Private)
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IntUnLockProcessPrivateFonts(Win32Process);
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else
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IntUnLockGlobalFonts;
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ASSERT(! NT_SUCCESS(Status) || NULL != TextObj->GDIFontHandle);
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RtlFreeUnicodeString(&FaceName);
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TEXTOBJ_UnlockText(FontHandle);
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}
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else
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{
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Status = STATUS_INVALID_HANDLE;
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}
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ASSERT(! NT_SUCCESS(Status) || NULL != TextObj->GDIFontHandle);
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return Status;
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}
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