216 lines
7.0 KiB
C
216 lines
7.0 KiB
C
//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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#ifndef __uspp__
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#define __uspp__
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#ifdef __cplusplus
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extern "C" {
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#endif
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//// USP10P.H
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//
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// Private additions to USP header for use within USP and by the
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// NT5 complex script language pack only.
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#if DBG
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#define USPALLOC(a,b) (DG.psFile=__FILE__, DG.iLine=__LINE__, UspAllocCache(a, b))
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#define USPALLOCTEMP(a, b) (DG.psFile=__FILE__, DG.iLine=__LINE__, UspAllocTemp(a, b))
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#define USPFREE(a) (DG.psFile=__FILE__, DG.iLine=__LINE__, UspFreeMem(a))
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#else
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#define USPALLOC(a,b) UspAllocCache(a, b)
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#define USPALLOCTEMP(a, b) UspAllocTemp(a, b)
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#define USPFREE(a) UspFreeMem (a)
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#endif
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///// LPK entry point serialisation
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//
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// Since it is not possible to guarantee that Uniscribe and the
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// LPK receive process deatachment after all their clients, we
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// need to track Uniscribe shutdown.
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//
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// At each LPK entrypoint, the LPK calls EnterLpk, and after each exit
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// it calls ExitLpk.
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//
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// If Uniscribe is detached, or being detatched, EnterLpk fails. In this
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// case, the LPK entrypoint must do something safe and return directly.
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//
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// Uniscribe maintains an LPK nesting level. If a process detach occurs
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// during LPK execution, a detachPending flag is set and will be processed
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// at the ExitLpk that pops all the nesting.
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void LpkPresent(); // Used by LPK to disable cleanup at PROCESS_DETACH time
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///// UspAllocCache
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//
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// Allocate long term memory for use caching font tables
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HRESULT WINAPI UspAllocCache(
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int iSize, // In required size in bytes
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void **ppv); // Out Allocated address
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///// UspAllocTemp
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//
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// Allocate short term memory with lifetime no more than an API call
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HRESULT WINAPI UspAllocTemp(
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int iSize, // In required size in bytes
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void **ppv); // Out Allocated address
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///// UspFreeMem
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//
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//
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HRESULT WINAPI UspFreeMem(
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void *pv); // In memory to be freed
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///// SCRIPT_STRING_ANALYSIS
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//
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// This structure provides all parameters required for script analysis.
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//
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//
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#define MAX_PLANE_0_FONT 13 // max number of non-surrogate fallback fonts
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#define MAX_SURROGATE_FONT 16 // max number of the surrogate fallback fonts
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// Max fallback fonts including user font (Cannot exceed 31 because usage is recorded in a bitset)
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// and Microsoft Sans Serif and surrogate fallback fonts.
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#define MAX_FONT MAX_PLANE_0_FONT + MAX_SURROGATE_FONT // 29 fonts
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#define DUMMY_MAX_FONT 7 // dummy one for dummy entries
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typedef struct tag_STRING_ANALYSIS {
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// Input variables - Initialised by the caller
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HDC hdc; // Only required for shaping (GCP_Ligate && lpOrder or lpGlyphs arrays specified)
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DWORD dwFlags; // See ScriptStringAnalyse
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CHARSETINFO csi; // As returned by TranslateCharsetInfo
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// Input buffers
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WCHAR *pwInChars; // Unicode input string
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int cInChars; // String length
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int iHotkeyPos; // Derived from '&' positions if SSA_HOTKEY set
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int iMaxExtent; // Required maximum pixel width (used if clipping or fitting)
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const int *piDx; // Logical advance width array
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SCRIPT_CONTROL sControl;
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SCRIPT_STATE sState;
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SCRIPT_TABDEF *pTabdef; // Tabstop definition
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int cMaxItems; // Number of entries in pItems
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SCRIPT_ITEM *pItems;
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// Low cost analysis output buffers
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// No shaping required when fLigate=FALSE
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// Must be at least as long as the input string
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BYTE *pbLevel; // Array of item level
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int *piVisToLog; // Visual to Logical mapping
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WORD *pwLeftGlyph; // Leftmost glyph of each logical item
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WORD *pwcGlyphs; // Count of glyphs in each logical item
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SCRIPT_LOGATTR *pLogAttr; // Cursor points, word and line breaking (indexed in logical order)
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// High cost analysis output buffers
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// Require hDC to be set
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// Must be at least nGlyphs long.
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int cMaxGlyphs; // Max glyphs to create
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WORD *pwGlyphs; // Output glyph array
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WORD *pwLogClust; // logical to visual mapping
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SCRIPT_VISATTR *pVisAttr; // Justification insertion points (visual order) and other flags
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int *piAdvance; // Advance widths
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int *piJustify; // Justified advance widths
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GOFFSET *pGoffset; // x,y combining character offsets
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// Font fallback
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DWORD dwFallbacksUsed;// Bitmap of fallback fonts used
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BYTE *pbFont; // Font index per item, 0 means original user font
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// Obsolete - have to leave them here so the subsequent layout
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// remains unchanged for old LPK to use (wchao, 12/14/2000).
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// we used the first two slots in hf_dummy array for some needed flags
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// take a look to isAssociated and isPrinting
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SCRIPT_CACHE sc_dummy[DUMMY_MAX_FONT];
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HFONT isAssociated; // used as flag to indicate if the user selected font is associated
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HFONT hf_dummy[DUMMY_MAX_FONT-1];
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int iCurFont; // 0 For users font
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LOGFONTA lfA; // Logfont from the original DC - only set if font fallback happens
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// Output variables
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// Item analysis
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int cItems; // Number of items analysed == Index of terminal (sentinel) item in pItem
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// Generated glyphs and character measurements
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// Note that
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// 1) nOutGlyphs may be more or less than nInChars.
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// 2) nOutChars may be less than nInChars if fClip was requested.
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int cOutGlyphs; // Number of glyphs generated
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int cOutChars; // Number of characters generated
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ABC abc;
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SIZE size; // Size of whole line (pixel width and height)
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// For client use
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void *pvClient;
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// fallback font store
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// we store in the items sc[MAX_PLANE_0_FONT-1] and hf[MAX_PLANE_0_FONT-1] the data for Microsoft Sans Serif
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// font which has hight same as the selected user font height.
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// note that hf[1] will have the font data for Microsoft Sans Serif font too but
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// with adjusted height.
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// the items in sc and hf arrays which have index greater than or equal MAX_PLANE_0_FONT will be used
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// for surrogate fallback fonts.
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SCRIPT_CACHE sc[MAX_FONT]; // Script cache for each fallback, [0] is users font
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HFONT hf[MAX_FONT]; // Handles to fallback fonts, [0] is users font
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} STRING_ANALYSIS;
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#ifdef __cplusplus
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}
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#endif
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#endif
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