diff options
Diffstat (limited to 'starmath/source/node.cxx')
| -rw-r--r-- | starmath/source/node.cxx | 133 |
1 files changed, 56 insertions, 77 deletions
diff --git a/starmath/source/node.cxx b/starmath/source/node.cxx index be17a9867ead..e8bd3b4f5213 100644 --- a/starmath/source/node.cxx +++ b/starmath/source/node.cxx @@ -901,8 +901,8 @@ void SmLineNode::Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell) { SmNode::Prepare(rFormat, rDocShell); - //! wir verwenden hier den 'FNT_VARIABLE' Font, da er vom Ascent und Descent - //! ia besser zum Rest der Formel passt als der 'FNT_MATH' Font. + // Here we use the 'FNT_VARIABLE' font since it's ascent and descent in general fit better + // to the rest of the formula compared to the 'FNT_MATH' font. GetFont() = rFormat.GetFont(FNT_VARIABLE); Flags() |= FLG_FONT; } @@ -1234,18 +1234,17 @@ SmNode * SmBinVerNode::GetLeftMost() /**************************************************************************/ +/// @return value of the determinant formed by the two points double Det(const Point &rHeading1, const Point &rHeading2) - // gibt den Wert der durch die beiden Punkte gebildeten Determinante - // zurueck { return rHeading1.X() * rHeading2.Y() - rHeading1.Y() * rHeading2.X(); } +/// Is true iff the point 'rPoint1' belongs to the straight line through 'rPoint2' +/// and has the direction vector 'rHeading2' bool IsPointInLine(const Point &rPoint1, const Point &rPoint2, const Point &rHeading2) - // ergibt true genau dann, wenn der Punkt 'rPoint1' zu der Gerade gehoert die - // durch den Punkt 'rPoint2' geht und den Richtungsvektor 'rHeading2' hat { OSL_ENSURE(rHeading2 != Point(), "Sm : 0 vector"); @@ -1278,7 +1277,7 @@ sal_uInt16 GetLineIntersectionPoint(Point &rResult, sal_uInt16 nRes = 1; const double eps = 5.0 * DBL_EPSILON; - // sind die Richtumgsvektoren linear abhaengig ? + // are the direction vectors linearly dependent? double fDet = Det(rHeading1, rHeading2); if (fabs(fDet) < eps) { @@ -1287,8 +1286,8 @@ sal_uInt16 GetLineIntersectionPoint(Point &rResult, } else { - // hier achten wir nicht auf Rechengenauigkeit - // (das wuerde aufwendiger und lohnt sich hier kaum) + // here we do not pay attention to the computational accurancy + // (that would be more complicated and is not really worth it in this case) double fLambda = ( (rPoint1.Y() - rPoint2.Y()) * rHeading2.X() - (rPoint1.X() - rPoint2.X()) * rHeading2.Y()) / fDet; @@ -1309,11 +1308,10 @@ SmBinDiagonalNode::SmBinDiagonalNode(const SmToken &rNodeToken) } +/// @return position and size of the diagonal line +/// premise: SmRect of the node defines the limitation(!) consequently it has to be known upfront void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, const Point &rDiagPoint, double fAngleDeg) const - // gibt die Position und Groesse fuer den Diagonalstrich zurueck. - // Vor.: das SmRect des Nodes gibt die Begrenzung vor(!), muss also selbst - // bereits bekannt sein. { const double fPi = 3.1415926535897932384626433; @@ -1327,19 +1325,15 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, aDiagHdg ( (long)(100.0 * cos(fAngleRad)), (long)(-100.0 * sin(fAngleRad)) ); - long nLeft, nRight, nTop, nBottom; // Raender des Rechtecks fuer die - // Diagonale + long nLeft, nRight, nTop, nBottom; // margins of the rectangle for the diagonal Point aPoint; if (IsAscending()) { - // - // obere rechte Ecke bestimmen - // + // determine top right corner GetLineIntersectionPoint(aPoint, Point(nRectLeft, nRectTop), aRightHdg, rDiagPoint, aDiagHdg); - // - // gibt es einen Schnittpunkt mit dem oberen Rand ? + // is there a point of intersection with the top border? if (aPoint.X() <= nRectRight) { nRight = aPoint.X(); @@ -1347,7 +1341,7 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, } else { - // es muss einen Schnittpunkt mit dem rechten Rand geben! + // there has to be a point of intersection with the right border! GetLineIntersectionPoint(aPoint, Point(nRectRight, nRectTop), aDownHdg, rDiagPoint, aDiagHdg); @@ -1356,14 +1350,11 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, nTop = aPoint.Y(); } - // - // untere linke Ecke bestimmen - // + // determine bottom left corner GetLineIntersectionPoint(aPoint, Point(nRectLeft, nRectBottom), aRightHdg, rDiagPoint, aDiagHdg); - // - // gibt es einen Schnittpunkt mit dem unteren Rand ? + // is there a point of intersection with the bottom border? if (aPoint.X() >= nRectLeft) { nLeft = aPoint.X(); @@ -1371,7 +1362,7 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, } else { - // es muss einen Schnittpunkt mit dem linken Rand geben! + // there has to be a point of intersection with the left border! GetLineIntersectionPoint(aPoint, Point(nRectLeft, nRectTop), aDownHdg, rDiagPoint, aDiagHdg); @@ -1382,14 +1373,11 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, } else { - // - // obere linke Ecke bestimmen - // + // determine top left corner GetLineIntersectionPoint(aPoint, Point(nRectLeft, nRectTop), aRightHdg, rDiagPoint, aDiagHdg); - // - // gibt es einen Schnittpunkt mit dem oberen Rand ? + // is there a point of intersection with the top border? if (aPoint.X() >= nRectLeft) { nLeft = aPoint.X(); @@ -1397,7 +1385,7 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, } else { - // es muss einen Schnittpunkt mit dem linken Rand geben! + // there has to be a point of intersection with the left border! GetLineIntersectionPoint(aPoint, Point(nRectLeft, nRectTop), aDownHdg, rDiagPoint, aDiagHdg); @@ -1406,14 +1394,11 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, nTop = aPoint.Y(); } - // - // untere rechte Ecke bestimmen - // + // determine bottom right corner GetLineIntersectionPoint(aPoint, Point(nRectLeft, nRectBottom), aRightHdg, rDiagPoint, aDiagHdg); - // - // gibt es einen Schnittpunkt mit dem unteren Rand ? + // is there a point of intersection with the bottom border? if (aPoint.X() <= nRectRight) { nRight = aPoint.X(); @@ -1421,7 +1406,7 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, } else { - // es muss einen Schnittpunkt mit dem rechten Rand geben! + // there has to be a point of intersection with the right border! GetLineIntersectionPoint(aPoint, Point(nRectRight, nRectTop), aDownHdg, rDiagPoint, aDiagHdg); @@ -1439,9 +1424,8 @@ void SmBinDiagonalNode::GetOperPosSize(Point &rPos, Size &rSize, void SmBinDiagonalNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) { - //! die beiden Argumente muessen in den Subnodes vor dem Operator kommen, - //! damit das anklicken im GraphicWindow den FormulaCursor richtig setzt - //! (vgl SmRootNode) + // Both arguments have to get into the SubNodes before the Operator so that clicking + // within the GraphicWindow sets the FormulaCursor correctly (cf. SmRootNode) SmNode *pLeft = GetSubNode(0), *pRight = GetSubNode(1); OSL_ENSURE(pLeft, "Sm : NULL pointer"); @@ -1460,12 +1444,12 @@ void SmBinDiagonalNode::Arrange(const OutputDevice &rDev, const SmFormat &rForma pLeft->Arrange(aTmpDev, rFormat); pRight->Arrange(aTmpDev, rFormat); - // implizit die Weite (incl Rand) des Diagonalstrichs ermitteln + // determine implicitely the values (incl. the margin) of the diagonal line pOper->Arrange(aTmpDev, rFormat); long nDelta = pOper->GetWidth() * 8 / 10; - // TopLeft Position vom rechten Argument ermitteln + // determine TopLeft position from the right argument Point aPos; aPos.X() = pLeft->GetItalicRight() + nDelta + pRight->GetItalicLeftSpace(); if (IsAscending()) @@ -1475,7 +1459,7 @@ void SmBinDiagonalNode::Arrange(const OutputDevice &rDev, const SmFormat &rForma pRight->MoveTo(aPos); - // neue Baseline bestimmen + // determine new baseline long nTmpBaseline = IsAscending() ? (pLeft->GetBottom() + pRight->GetTop()) / 2 : (pLeft->GetTop() + pRight->GetBottom()) / 2; Point aLogCenter ((pLeft->GetItalicRight() + pRight->GetItalicLeft()) / 2, @@ -1485,14 +1469,14 @@ void SmBinDiagonalNode::Arrange(const OutputDevice &rDev, const SmFormat &rForma ExtendBy(*pRight, RCP_NONE); - // Position und Groesse des Diagonalstrich ermitteln + // determine position and size of diagonal line Size aTmpSize; GetOperPosSize(aPos, aTmpSize, aLogCenter, IsAscending() ? 60.0 : -60.0); // font specialist advised to change the width first pOper->AdaptToY(aTmpDev, aTmpSize.Height()); pOper->AdaptToX(aTmpDev, aTmpSize.Width()); - // und diese wirksam machen + // and make it active pOper->Arrange(aTmpDev, rFormat); pOper->MoveTo(aPos); @@ -1728,16 +1712,16 @@ void SmBraceNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) long nFaceHeight = GetFont().GetSize().Height(); - // Uebergroesse in % ermitteln + // determine oversize in % sal_uInt16 nPerc = 0; if (!bIsABS && bScale) - { // im Fall von Klammern mit Uebergroesse... + { // in case of oversize braces... sal_uInt16 nIndex = GetScaleMode() == SCALE_HEIGHT ? DIS_BRACKETSIZE : DIS_NORMALBRACKETSIZE; nPerc = rFormat.GetDistance(nIndex); } - // ermitteln der Hoehe fuer die Klammern + // determine the height for the braces long nBraceHeight; if (bScale) { @@ -1749,11 +1733,11 @@ void SmBraceNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) else nBraceHeight = nFaceHeight; - // Abstand zum Argument + // distance to the argument nPerc = bIsABS ? 0 : rFormat.GetDistance(DIS_BRACKETSPACE); long nDist = nFaceHeight * nPerc / 100L; - // sofern erwuenscht skalieren der Klammern auf die gewuenschte Groesse + // if wanted, scale the braces to the wanted size if (bScale) { Size aTmpSize (pLeft->GetFont().GetSize()); @@ -1781,7 +1765,7 @@ void SmBraceNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) pLeft ->Arrange(rDev, rFormat); pRight->Arrange(rDev, rFormat); - // damit auch "\(a\) - (a) - left ( a right )" vernuenftig aussieht + // required in order to make "\(a\) - (a) - left ( a right )" look alright RectVerAlign eVerAlign = bScale ? RVA_CENTERY : RVA_BASELINE; Point aPos; @@ -1880,9 +1864,9 @@ void SmVerticalBraceNode::Arrange(const OutputDevice &rDev, const SmFormat &rFor pBody->Arrange(aTmpDev, rFormat); - // Groesse wie bei Grenzen fuer diesen Teil + // size is the same as for limits for this part pScript->SetSize( Fraction( rFormat.GetRelSize(SIZ_LIMITS), 100 ) ); - // etwas hoehere Klammern als normal + // braces are a bit taller than usually pBrace ->SetSize( Fraction(3, 2) ); long nItalicWidth = pBody->GetItalicWidth(); @@ -1892,7 +1876,7 @@ void SmVerticalBraceNode::Arrange(const OutputDevice &rDev, const SmFormat &rFor pBrace ->Arrange(aTmpDev, rFormat); pScript->Arrange(aTmpDev, rFormat); - // die relativen Position und die Abstaende zueinander bestimmen + // determine the relative position and the distances between each other RectPos eRectPos; long nFontHeight = pBody->GetFont().GetSize().Height(); long nDistBody = nFontHeight * rFormat.GetDistance(DIS_ORNAMENTSIZE), @@ -2000,7 +1984,7 @@ void SmOperNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) void SmAlignNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) - // setzt im ganzen subtree (incl aktuellem node) das alignment + // set alignment within the entire subtree (including current node) { OSL_ENSURE(GetNumSubNodes() > 0, "Sm: missing subnode"); @@ -2039,7 +2023,7 @@ void SmAttributNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) pAttr->AdaptToX(rDev, pBody->GetItalicWidth()); pAttr->Arrange(rDev, rFormat); - // get relative position of attribut + // get relative position of attribute RectVerAlign eVerAlign; long nDist = 0; switch (GetToken().eType) @@ -2263,9 +2247,7 @@ void SmPolyLineNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) long nBorderwidth = GetFont().GetBorderWidth(); - // - // Das Polygon mit den beiden Endpunkten bilden - // + // create polygon using both endpoints OSL_ENSURE(aPoly.GetSize() == 2, "Sm : wrong number of points"); Point aPointA, aPointB; if (GetToken().eType == TWIDESLASH) @@ -2304,8 +2286,8 @@ void SmRootSymbolNode::AdaptToX(const OutputDevice &/*rDev*/, sal_uLong nWidth) void SmRootSymbolNode::AdaptToY(const OutputDevice &rDev, sal_uLong nHeight) { - // etwas extra Laenge damit der horizontale Balken spaeter ueber dem - // Argument positioniert ist + // some additional length so that the horizontal + // bar will be positioned above the argument SmMathSymbolNode::AdaptToY(rDev, nHeight + nHeight / 10L); } @@ -2702,8 +2684,8 @@ void SmMathSymbolNode::AdaptToY(const OutputDevice &rDev, sal_uLong nHeight) GetFont().FreezeBorderWidth(); Size aFntSize (GetFont().GetSize()); - // da wir nur die Hoehe skalieren wollen muesen wir hier ggf die Fontweite - // ermitteln um diese beizubehalten. + // Since we only want to scale the heigth, we might have + // to determine the font width in order to keep it if (aFntSize.Width() == 0) { OutputDevice &rDevNC = (OutputDevice &) rDev; @@ -2903,7 +2885,7 @@ SmSpecialNode::SmSpecialNode(SmNodeType eNodeType, const SmToken &rNodeToken, sa SmSpecialNode::SmSpecialNode(const SmToken &rNodeToken) : - SmTextNode(NSPECIAL, rNodeToken, FNT_MATH) //! default Font nicht immer richtig + SmTextNode(NSPECIAL, rNodeToken, FNT_MATH) // default Font isn't always correct! { bIsFromGreekSymbolSet = lcl_IsFromGreekSymbolSet( rNodeToken.aText ); } @@ -2932,11 +2914,9 @@ void SmSpecialNode::Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell // use same font size as is used for variables GetFont().SetSize( rFormat.GetFont( FNT_VARIABLE ).GetSize() ); - //! eigentlich sollten nur WEIGHT_NORMAL und WEIGHT_BOLD vorkommen... - //! In der sms-Datei gibt es jedoch zB auch 'WEIGHT_ULTRALIGHT' - //! daher vergleichen wir hier mit > statt mit != . - //! (Langfristig sollte die Notwendigkeit fuer 'PrepareAttribut', und damit - //! fuer dieses hier, mal entfallen.) + // Actually only WEIGHT_NORMAL and WEIGHT_BOLD should occur... However, the sms-file also + // contains e.g. 'WEIGHT_ULTRALIGHT'. Consequently, compare here with '>' instead of '!='. + // (In the long term the necessity for 'PrepareAttribut' and thus also for this here should be dropped) // //! see also SmFontStyles::GetStyleName if (IsItalic( GetFont() )) @@ -3067,9 +3047,8 @@ void SmBlankNode::Prepare(const SmFormat &rFormat, const SmDocShell &rDocShell) { SmNode::Prepare(rFormat, rDocShell); - //! hier muss/sollte es lediglich nicht der StarMath Font sein, - //! damit fuer das in Arrange verwendete Zeichen ein "normales" - //! (ungecliptes) Rechteck erzeugt wird. + // Here it need/should not be the StarMath font, so that for the character + // used in Arrange a normal (non-clipped) rectangle is generated GetFont() = rFormat.GetFont(FNT_VARIABLE); Flags() |= FLG_FONT | FLG_BOLD | FLG_ITALIC; @@ -3081,16 +3060,16 @@ void SmBlankNode::Arrange(const OutputDevice &rDev, const SmFormat &rFormat) SmTmpDevice aTmpDev ((OutputDevice &) rDev, true); aTmpDev.SetFont(GetFont()); - // Abstand von der Fonthoehe abhaengig machen - // (damit er beim skalieren (zB size *2 {a ~ b}) mitwaechst) + // make distance depend on the font heigth + // (so that it increases when scaling (e.g. size *2 {a ~ b}) long nDist = GetFont().GetSize().Height() / 10L, nSpace = nNum * nDist; - // ein SmRect mit Baseline und allem drum und dran besorgen + // get a SmRect with Baseline and all the bells and whistles SmRect::operator = (SmRect(aTmpDev, &rFormat, rtl::OUString(' '), GetFont().GetBorderWidth())); - // und dieses auf die gewuenschte Breite bringen + // and resize it to the requested size SetItalicSpaces(0, 0); SetWidth(nSpace); } |