/************************************************************** * * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * *************************************************************/ // MARKER(update_precomp.py): autogen include statement, do not remove #include "precompiled_starmath.hxx" #include #include #include #include #include #include "rect.hxx" #include "types.hxx" #include "utility.hxx" #include "smmod.hxx" //////////////////////////////////////////////////////////////////////////////// // '\0' terminiertes Array mit Zeichen, die im StarMath Font als Buchstaben // betrachtet werden sollen, (um im Gegensatz zu den anderen Operatoren // und Symbolen ein "normales"(ungecliptes) SmRect zu erhalten). static xub_Unicode __READONLY_DATA aMathAlpha[] = { MS_ALEPH, MS_IM, MS_RE, MS_WP, xub_Unicode(0xE070), MS_EMPTYSET, xub_Unicode(0x2113), xub_Unicode(0xE0D6), xub_Unicode(0x2107), xub_Unicode(0x2127), xub_Unicode(0x210A), MS_HBAR, MS_LAMBDABAR, MS_SETN, MS_SETZ, MS_SETQ, MS_SETR, MS_SETC, xub_Unicode(0x2373), xub_Unicode(0xE0A5), xub_Unicode(0x2112), xub_Unicode(0x2130), xub_Unicode(0x2131), xub_Unicode('\0') }; sal_Bool SmIsMathAlpha(const XubString &rText) // ergibt genau dann sal_True, wenn das Zeichen (aus dem StarMath Font) wie ein // Buchstabe behandelt werden soll. { if (rText.Len() == 0) return sal_False; DBG_ASSERT(rText.Len() == 1, "Sm : String enthaelt nicht genau ein Zeichen"); xub_Unicode cChar = rText.GetChar(0); // ist es ein griechisches Zeichen ? if (xub_Unicode(0xE0AC) <= cChar && cChar <= xub_Unicode(0xE0D4)) return sal_True; else { // kommt es in 'aMathAlpha' vor ? const xub_Unicode *pChar = aMathAlpha; while (*pChar && *pChar != cChar) pChar++; return *pChar != xub_Unicode('\0'); } } //////////////////////////////////////// // // SmRect members // SmRect::SmRect() // constructs empty rectangle at (0, 0) with width and height 0. { DBG_ASSERT(aTopLeft == Point(0, 0), "Sm: ooops..."); DBG_ASSERT(aSize == Size(0, 0), "Sm: ooops..."); bHasBaseline = bHasAlignInfo = sal_False; nBaseline = nAlignT = nAlignM = nAlignB = nGlyphTop = nGlyphBottom = nItalicLeftSpace = nItalicRightSpace = nLoAttrFence = nHiAttrFence = 0; nBorderWidth = 0; } SmRect::SmRect(const SmRect &rRect) : aTopLeft(rRect.aTopLeft), aSize(rRect.aSize) { bHasBaseline = rRect.bHasBaseline; nBaseline = rRect.nBaseline; nAlignT = rRect.nAlignT; nAlignM = rRect.nAlignM; nAlignB = rRect.nAlignB; nGlyphTop = rRect.nGlyphTop; nGlyphBottom = rRect.nGlyphBottom; nHiAttrFence = rRect.nHiAttrFence; nLoAttrFence = rRect.nLoAttrFence; bHasAlignInfo = rRect.bHasAlignInfo; nItalicLeftSpace = rRect.nItalicLeftSpace; nItalicRightSpace = rRect.nItalicRightSpace; nBorderWidth = rRect.nBorderWidth; } void SmRect::CopyAlignInfo(const SmRect &rRect) { nBaseline = rRect.nBaseline; bHasBaseline = rRect.bHasBaseline; nAlignT = rRect.nAlignT; nAlignM = rRect.nAlignM; nAlignB = rRect.nAlignB; bHasAlignInfo = rRect.bHasAlignInfo; nLoAttrFence = rRect.nLoAttrFence; nHiAttrFence = rRect.nHiAttrFence; } void SmRect::BuildRect(const OutputDevice &rDev, const SmFormat *pFormat, const XubString &rText, sal_uInt16 nBorder) { DBG_ASSERT(aTopLeft == Point(0, 0), "Sm: Ooops..."); aSize = Size(rDev.GetTextWidth(rText), rDev.GetTextHeight()); const FontMetric aFM (rDev.GetFontMetric()); sal_Bool bIsMath = aFM.GetName().EqualsIgnoreCaseAscii( FONTNAME_MATH ); sal_Bool bAllowSmaller = bIsMath && !SmIsMathAlpha(rText); const long nFontHeight = rDev.GetFont().GetSize().Height(); nBorderWidth = nBorder; bHasAlignInfo = sal_True; bHasBaseline = sal_True; nBaseline = aFM.GetAscent(); nAlignT = nBaseline - nFontHeight * 750L / 1000L; nAlignM = nBaseline - nFontHeight * 121L / 422L; // that's where the horizontal bars of '+', '-', ... are // (1/3 of ascent over baseline) // (121 = 1/3 of 12pt ascent, 422 = 12pt fontheight) nAlignB = nBaseline; // workaround for printer fonts with very small (possible 0 or even // negative(!)) leading if (aFM.GetIntLeading() < 5 && rDev.GetOutDevType() == OUTDEV_PRINTER) { OutputDevice *pWindow = Application::GetDefaultDevice(); pWindow->Push(PUSH_MAPMODE | PUSH_FONT); pWindow->SetMapMode(rDev.GetMapMode()); pWindow->SetFont(rDev.GetFontMetric()); long nDelta = pWindow->GetFontMetric().GetIntLeading(); if (nDelta == 0) { // dieser Wert entspricht etwa einem Leading von 80 bei einer // Fonthoehe von 422 (12pt) nDelta = nFontHeight * 8L / 43; } SetTop(GetTop() - nDelta); pWindow->Pop(); } // get GlyphBoundRect Rectangle aGlyphRect; #if OSL_DEBUG_LEVEL > 1 sal_Bool bSuccess = #endif SmGetGlyphBoundRect(rDev, rText, aGlyphRect); #if OSL_DEBUG_LEVEL > 1 if (!bSuccess) { DBG_ERROR( "Sm : Ooops... (fehlt evtl. der Font?)"); } #endif nItalicLeftSpace = GetLeft() - aGlyphRect.Left() + nBorderWidth; nItalicRightSpace = aGlyphRect.Right() - GetRight() + nBorderWidth; if (nItalicLeftSpace < 0 && !bAllowSmaller) nItalicLeftSpace = 0; if (nItalicRightSpace < 0 && !bAllowSmaller) nItalicRightSpace = 0; long nDist = 0; if (pFormat) nDist = (rDev.GetFont().GetSize().Height() * pFormat->GetDistance(DIS_ORNAMENTSIZE)) / 100L; nHiAttrFence = aGlyphRect.TopLeft().Y() - 1 - nBorderWidth - nDist; nLoAttrFence = SmFromTo(GetAlignB(), GetBottom(), 0.0); nGlyphTop = aGlyphRect.Top() - nBorderWidth; nGlyphBottom = aGlyphRect.Bottom() + nBorderWidth; if (bAllowSmaller) { // fuer Symbole und Operatoren aus dem StarMath Font passen wir den // oberen und unteren Rand dem Zeichen an. SetTop(nGlyphTop); SetBottom(nGlyphBottom); } if (nHiAttrFence < GetTop()) nHiAttrFence = GetTop(); if (nLoAttrFence > GetBottom()) nLoAttrFence = GetBottom(); DBG_ASSERT(rText.Len() == 0 || !IsEmpty(), "Sm: leeres Rechteck erzeugt"); } void SmRect::Init(const OutputDevice &rDev, const SmFormat *pFormat, const XubString &rText, sal_uInt16 nEBorderWidth) // get rectangle fitting for drawing 'rText' on OutputDevice 'rDev' { BuildRect(rDev, pFormat, rText, nEBorderWidth); } SmRect::SmRect(const OutputDevice &rDev, const SmFormat *pFormat, const XubString &rText, long nEBorderWidth) { DBG_ASSERT( nEBorderWidth >= 0, "BorderWidth negativ" ); if (nEBorderWidth < 0) nEBorderWidth = 0; Init(rDev, pFormat, rText, (sal_uInt16) nEBorderWidth); } SmRect::SmRect(long nWidth, long nHeight) // this constructor should never be used for anything textlike because // it will not provide useful values for baseline, AlignT and AlignB! // It's purpose is to get a 'SmRect' for the horizontal line in fractions // as used in 'SmBinVerNode'. : aSize(nWidth, nHeight) { DBG_ASSERT(aTopLeft == Point(0, 0), "Sm: ooops..."); bHasBaseline = sal_False; bHasAlignInfo = sal_True; nBaseline = 0; nAlignT = GetTop(); nAlignB = GetBottom(); nAlignM = (nAlignT + nAlignB) / 2; // this is the default nItalicLeftSpace = nItalicRightSpace = 0; nGlyphTop = nHiAttrFence = GetTop(); nGlyphBottom = nLoAttrFence = GetBottom(); nBorderWidth = 0; } void SmRect::SetLeft(long nLeft) { if (nLeft <= GetRight()) { aSize.Width() = GetRight() - nLeft + 1; aTopLeft.X() = nLeft; } } void SmRect::SetRight(long nRight) { if (nRight >= GetLeft()) aSize.Width() = nRight - GetLeft() + 1; } void SmRect::SetBottom(long nBottom) { if (nBottom >= GetTop()) aSize.Height() = nBottom - GetTop() + 1; } void SmRect::SetTop(long nTop) { if (nTop <= GetBottom()) { aSize.Height() = GetBottom() - nTop + 1; aTopLeft.Y() = nTop; } } void SmRect::Move(const Point &rPosition) // move rectangle by position 'rPosition'. { aTopLeft += rPosition; long nDelta = rPosition.Y(); nBaseline += nDelta; nAlignT += nDelta; nAlignM += nDelta; nAlignB += nDelta; nGlyphTop += nDelta; nGlyphBottom += nDelta; nHiAttrFence += nDelta; nLoAttrFence += nDelta; } const Point SmRect::AlignTo(const SmRect &rRect, RectPos ePos, RectHorAlign eHor, RectVerAlign eVer) const { Point aPos (GetTopLeft()); // will become the topleft point of the new rectangle position // set horizontal or vertical new rectangle position depending on // 'ePos' is one of 'RP_LEFT', 'RP_RIGHT' or 'RP_TOP', 'RP_BOTTOM' switch (ePos) { case RP_LEFT : aPos.X() = rRect.GetItalicLeft() - GetItalicRightSpace() - GetWidth(); break; case RP_RIGHT : aPos.X() = rRect.GetItalicRight() + 1 + GetItalicLeftSpace(); break; case RP_TOP : aPos.Y() = rRect.GetTop() - GetHeight(); break; case RP_BOTTOM : aPos.Y() = rRect.GetBottom() + 1; break; case RP_ATTRIBUT : aPos.X() = rRect.GetItalicCenterX() - GetItalicWidth() / 2 + GetItalicLeftSpace(); break; default : DBG_ASSERT(sal_False, "Sm: unbekannter Fall"); } // check if horizontal position is already set if (ePos == RP_LEFT || ePos == RP_RIGHT || ePos == RP_ATTRIBUT) // correct error in current vertical position switch (eVer) { case RVA_TOP : aPos.Y() += rRect.GetAlignT() - GetAlignT(); break; case RVA_MID : aPos.Y() += rRect.GetAlignM() - GetAlignM(); break; case RVA_BASELINE : // align baselines if possible else align mid's if (HasBaseline() && rRect.HasBaseline()) aPos.Y() += rRect.GetBaseline() - GetBaseline(); else aPos.Y() += rRect.GetAlignM() - GetAlignM(); break; case RVA_BOTTOM : aPos.Y() += rRect.GetAlignB() - GetAlignB(); break; case RVA_CENTERY : aPos.Y() += rRect.GetCenterY() - GetCenterY(); break; case RVA_ATTRIBUT_HI: aPos.Y() += rRect.GetHiAttrFence() - GetBottom(); break; case RVA_ATTRIBUT_MID : aPos.Y() += SmFromTo(rRect.GetAlignB(), rRect.GetAlignT(), 0.4) - GetCenterY(); break; case RVA_ATTRIBUT_LO : aPos.Y() += rRect.GetLoAttrFence() - GetTop(); break; default : DBG_ASSERT(sal_False, "Sm: unbekannter Fall"); } // check if vertical position is already set if (ePos == RP_TOP || ePos == RP_BOTTOM) // correct error in current horizontal position switch (eHor) { case RHA_LEFT : aPos.X() += rRect.GetItalicLeft() - GetItalicLeft(); break; case RHA_CENTER : aPos.X() += rRect.GetItalicCenterX() - GetItalicCenterX(); break; case RHA_RIGHT : aPos.X() += rRect.GetItalicRight() - GetItalicRight(); break; default : DBG_ASSERT(sal_False, "Sm: unbekannter Fall"); } return aPos; } SmRect & SmRect::Union(const SmRect &rRect) // rectangle union of current one with 'rRect'. The result is to be the // smallest rectangles that covers the space of both rectangles. // (empty rectangles cover no space) //! Italic correction is NOT taken into account here! { if (rRect.IsEmpty()) return *this; long nL = rRect.GetLeft(), nR = rRect.GetRight(), nT = rRect.GetTop(), nB = rRect.GetBottom(), nGT = rRect.nGlyphTop, nGB = rRect.nGlyphBottom; if (!IsEmpty()) { long nTmp; if ((nTmp = GetLeft()) < nL) nL = nTmp; if ((nTmp = GetRight()) > nR) nR = nTmp; if ((nTmp = GetTop()) < nT) nT = nTmp; if ((nTmp = GetBottom()) > nB) nB = nTmp; if ((nTmp = nGlyphTop) < nGT) nGT = nTmp; if ((nTmp = nGlyphBottom) > nGB) nGB = nTmp; } SetLeft(nL); SetRight(nR); SetTop(nT); SetBottom(nB); nGlyphTop = nGT; nGlyphBottom = nGB; return *this; } SmRect & SmRect::ExtendBy(const SmRect &rRect, RectCopyMBL eCopyMode) // let current rectangle be the union of itself and 'rRect' // (the smallest rectangle surrounding both). Also adapt values for // 'AlignT', 'AlignM', 'AlignB', baseline and italic-spaces. // The baseline is set according to 'eCopyMode'. // If one of the rectangles has no relevant info the other one is copied. { // get some values used for (italic) spaces adaption // ! (need to be done before changing current SmRect) ! long nL = Min(GetItalicLeft(), rRect.GetItalicLeft()), nR = Max(GetItalicRight(), rRect.GetItalicRight()); Union(rRect); SetItalicSpaces(GetLeft() - nL, nR - GetRight()); if (!HasAlignInfo()) CopyAlignInfo(rRect); else if (rRect.HasAlignInfo()) { nAlignT = Min(GetAlignT(), rRect.GetAlignT()); nAlignB = Max(GetAlignB(), rRect.GetAlignB()); nHiAttrFence = Min(GetHiAttrFence(), rRect.GetHiAttrFence()); nLoAttrFence = Max(GetLoAttrFence(), rRect.GetLoAttrFence()); DBG_ASSERT(HasAlignInfo(), "Sm: ooops..."); switch (eCopyMode) { case RCP_THIS: // already done break; case RCP_ARG: CopyMBL(rRect); break; case RCP_NONE: ClearBaseline(); nAlignM = (nAlignT + nAlignB) / 2; break; case RCP_XOR: if (!HasBaseline()) CopyMBL(rRect); break; default : DBG_ASSERT(sal_False, "Sm: unbekannter Fall"); } } return *this; } SmRect & SmRect::ExtendBy(const SmRect &rRect, RectCopyMBL eCopyMode, long nNewAlignM) // as 'ExtendBy' but sets AlignM value to 'nNewAlignM'. // (this version will be used in 'SmBinVerNode' to provide means to // align eg "{a over b} over c" correctly where AlignM should not // be (AlignT + AlignB) / 2) { DBG_ASSERT(HasAlignInfo(), "Sm: keine Align Info"); ExtendBy(rRect, eCopyMode); nAlignM = nNewAlignM; return *this; } SmRect & SmRect::ExtendBy(const SmRect &rRect, RectCopyMBL eCopyMode, sal_Bool bKeepVerAlignParams) // as 'ExtendBy' but keeps original values for AlignT, -M and -B and // baseline. // (this is used in 'SmSupSubNode' where the sub-/supscripts shouldn't // be allowed to modify these values.) { long nOldAlignT = GetAlignT(), nOldAlignM = GetAlignM(), nOldAlignB = GetAlignB(), nOldBaseline = nBaseline; //! depends not on 'HasBaseline' sal_Bool bOldHasAlignInfo = HasAlignInfo(); ExtendBy(rRect, eCopyMode); if (bKeepVerAlignParams) { nAlignT = nOldAlignT; nAlignM = nOldAlignM; nAlignB = nOldAlignB; nBaseline = nOldBaseline; bHasAlignInfo = bOldHasAlignInfo; } return *this; } long SmRect::OrientedDist(const Point &rPoint) const // return oriented distance of rPoint to the current rectangle, // especially the return value is <= 0 iff the point is inside the // rectangle. // For simplicity the maximum-norm is used. { sal_Bool bIsInside = IsInsideItalicRect(rPoint); // build reference point to define the distance Point aRef; if (bIsInside) { Point aIC (GetItalicCenterX(), GetCenterY()); aRef.X() = rPoint.X() >= aIC.X() ? GetItalicRight() : GetItalicLeft(); aRef.Y() = rPoint.Y() >= aIC.Y() ? GetBottom() : GetTop(); } else { // x-coordinate if (rPoint.X() > GetItalicRight()) aRef.X() = GetItalicRight(); else if (rPoint.X() < GetItalicLeft()) aRef.X() = GetItalicLeft(); else aRef.X() = rPoint.X(); // y-coordinate if (rPoint.Y() > GetBottom()) aRef.Y() = GetBottom(); else if (rPoint.Y() < GetTop()) aRef.Y() = GetTop(); else aRef.Y() = rPoint.Y(); } // build distance vector Point aDist (aRef - rPoint); long nAbsX = labs(aDist.X()), nAbsY = labs(aDist.Y()); return bIsInside ? - Min(nAbsX, nAbsY) : Max (nAbsX, nAbsY); } sal_Bool SmRect::IsInsideRect(const Point &rPoint) const { return rPoint.Y() >= GetTop() && rPoint.Y() <= GetBottom() && rPoint.X() >= GetLeft() && rPoint.X() <= GetRight(); } sal_Bool SmRect::IsInsideItalicRect(const Point &rPoint) const { return rPoint.Y() >= GetTop() && rPoint.Y() <= GetBottom() && rPoint.X() >= GetItalicLeft() && rPoint.X() <= GetItalicRight(); } SmRect SmRect::AsGlyphRect() const { SmRect aRect (*this); aRect.SetTop(nGlyphTop); aRect.SetBottom(nGlyphBottom); return aRect; } #ifdef SM_RECT_DEBUG // forward declaration void SmDrawFrame(OutputDevice &rDev, const Rectangle &rRec, const Color aCol = COL_BLACK); void SmRect::Draw(OutputDevice &rDev, const Point &rPosition, int nFlags) const { if (IsEmpty()) return; rDev.Push(PUSH_LINECOLOR); if (nFlags & SM_RECT_LINES) { long nLeftSpace = 0, nRightSpace = 0; if (nFlags & SM_RECT_ITALIC) { nLeftSpace = GetItalicLeftSpace(); nRightSpace = GetItalicRightSpace(); } long nLeft = GetLeft() - nLeftSpace, nRight = GetRight() + nRightSpace; Point aOffset (rPosition - GetTopLeft()); rDev.SetLineColor(COL_LIGHTBLUE); rDev.DrawLine(Point(nLeft, GetAlignB()) += aOffset, Point(nRight, GetAlignB()) += aOffset); rDev.DrawLine(Point(nLeft, GetAlignT()) += aOffset, Point(nRight, GetAlignT()) += aOffset); if (HasBaseline()) rDev.DrawLine(Point(nLeft, GetBaseline()) += aOffset, Point(nRight, GetBaseline()) += aOffset); rDev.SetLineColor(COL_GRAY); rDev.DrawLine(Point(nLeft, GetHiAttrFence()) += aOffset, Point(nRight, GetHiAttrFence()) += aOffset); } if (nFlags & SM_RECT_MID) { Point aCenter = rPosition + (Point(GetItalicCenterX(), GetAlignM()) -= GetTopLeft()), aLenX (GetWidth() / 5, 0), aLenY (0, GetHeight() / 16); rDev.SetLineColor(COL_LIGHTGREEN); rDev.DrawLine(aCenter - aLenX, aCenter + aLenX); rDev.DrawLine(aCenter - aLenY, aCenter + aLenY); } if (nFlags & SM_RECT_ITALIC) SmDrawFrame(rDev, Rectangle(rPosition - Point(GetItalicLeftSpace(), 0), GetItalicSize())); if (nFlags & SM_RECT_CORE) SmDrawFrame(rDev, Rectangle(rPosition, GetSize()), COL_LIGHTRED); rDev.Pop(); } void SmDrawFrame(OutputDevice &rDev, const Rectangle &rRec, const Color aCol) { rDev.Push(PUSH_LINECOLOR); rDev.SetLineColor(aCol); rDev.DrawLine(rRec.TopLeft(), rRec.BottomLeft()); rDev.DrawLine(rRec.BottomLeft(), rRec.BottomRight()); rDev.DrawLine(rRec.BottomRight(), rRec.TopRight()); rDev.DrawLine(rRec.TopRight(), rRec.TopLeft()); rDev.Pop(); } #endif //SM_RECT_DEBUG sal_Bool SmGetGlyphBoundRect(const OutputDevice &rDev, const XubString &rText, Rectangle &rRect) // basically the same as 'GetTextBoundRect' (in class 'OutputDevice') // but with a string as argument. { // handle special case first xub_StrLen nLen = rText.Len(); if (nLen == 0) { rRect.SetEmpty(); return sal_True; } // get a device where 'OutputDevice::GetTextBoundRect' will be successful OutputDevice *pGlyphDev; if (rDev.GetOutDevType() != OUTDEV_PRINTER) pGlyphDev = (OutputDevice *) &rDev; else { // since we format for the printer (where GetTextBoundRect will fail) // we need a virtual device here. pGlyphDev = &SM_MOD()->GetDefaultVirtualDev(); } const FontMetric aDevFM (rDev.GetFontMetric()); pGlyphDev->Push(PUSH_FONT | PUSH_MAPMODE); Font aFnt(rDev.GetFont()); aFnt.SetAlign(ALIGN_TOP); // use scale factor when calling GetTextBoundRect to counter // negative effects from antialiasing which may otherwise result // in significant incorrect bounding rectangles for some charcters. Size aFntSize = aFnt.GetSize(); // HDU: workaround to avoid HUGE font sizes and resulting problems (#112783#) long nScaleFactor = 1; while( aFntSize.Height() > 2000 * nScaleFactor ) nScaleFactor *= 2; aFnt.SetSize( Size( aFntSize.Width() / nScaleFactor, aFntSize.Height() / nScaleFactor ) ); pGlyphDev->SetFont(aFnt); long nTextWidth = rDev.GetTextWidth(rText); Point aPoint; Rectangle aResult (aPoint, Size(nTextWidth, rDev.GetTextHeight())), aTmp; sal_Bool bSuccess = pGlyphDev->GetTextBoundRect(aTmp, rText, 0, 0); DBG_ASSERT( bSuccess, "GetTextBoundRect failed" ); if (!aTmp.IsEmpty()) { aResult = Rectangle(aTmp.Left() * nScaleFactor, aTmp.Top() * nScaleFactor, aTmp.Right() * nScaleFactor, aTmp.Bottom() * nScaleFactor); if (&rDev != pGlyphDev) /* only when rDev is a printer... */ { long nGDTextWidth = pGlyphDev->GetTextWidth(rText); if (nGDTextWidth != 0 && nTextWidth != nGDTextWidth) { aResult.Right() *= nTextWidth; aResult.Right() /= nGDTextWidth * nScaleFactor; } } } // move rectangle to match possibly different baselines // (because of different devices) long nDelta = aDevFM.GetAscent() - pGlyphDev->GetFontMetric().GetAscent() * nScaleFactor; aResult.Move(0, nDelta); pGlyphDev->Pop(); rRect = aResult; return bSuccess; }