starmath: these functions are local
Change-Id: I7b1c9722e300585603ce54610d7ef20425a4e634 Reviewed-on: https://gerrit.libreoffice.org/33797 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Takeshi Abe <tabe@fixedpoint.jp>
This commit is contained in:
Takeshi Abe
@@ -29,12 +29,6 @@
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#include "format.hxx"
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#include "format.hxx"
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bool SmGetGlyphBoundRect(const OutputDevice &rDev,
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const OUString &rText, Rectangle &rRect);
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bool SmIsMathAlpha(const OUString &rText);
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inline long SmFromTo(long nFrom, long nTo, double fRelDist)
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inline long SmFromTo(long nFrom, long nTo, double fRelDist)
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{
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{
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return nFrom + static_cast<long>(fRelDist * (nTo - nFrom));
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return nFrom + static_cast<long>(fRelDist * (nTo - nFrom));
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@@ -31,6 +31,85 @@
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#include <cassert>
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#include <cassert>
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#include <unordered_set>
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#include <unordered_set>
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namespace {
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bool SmGetGlyphBoundRect(const vcl::RenderContext &rDev,
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const OUString &rText, Rectangle &rRect)
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// basically the same as 'GetTextBoundRect' (in class 'OutputDevice')
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// but with a string as argument.
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{
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// handle special case first
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if (rText.isEmpty())
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{
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rRect.SetEmpty();
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return true;
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}
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// get a device where 'OutputDevice::GetTextBoundRect' will be successful
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OutputDevice *pGlyphDev;
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if (rDev.GetOutDevType() != OUTDEV_PRINTER)
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pGlyphDev = const_cast<OutputDevice *>(&rDev);
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else
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{
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// since we format for the printer (where GetTextBoundRect will fail)
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// we need a virtual device here.
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pGlyphDev = &SM_MOD()->GetDefaultVirtualDev();
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}
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const FontMetric aDevFM (rDev.GetFontMetric());
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pGlyphDev->Push(PushFlags::FONT | PushFlags::MAPMODE);
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vcl::Font aFnt(rDev.GetFont());
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aFnt.SetAlignment(ALIGN_TOP);
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// use scale factor when calling GetTextBoundRect to counter
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// negative effects from antialiasing which may otherwise result
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// in significant incorrect bounding rectangles for some characters.
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Size aFntSize = aFnt.GetFontSize();
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// Workaround to avoid HUGE font sizes and resulting problems
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long nScaleFactor = 1;
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while( aFntSize.Height() > 2000 * nScaleFactor )
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nScaleFactor *= 2;
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aFnt.SetFontSize( Size( aFntSize.Width() / nScaleFactor, aFntSize.Height() / nScaleFactor ) );
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pGlyphDev->SetFont(aFnt);
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long nTextWidth = rDev.GetTextWidth(rText);
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Point aPoint;
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Rectangle aResult (aPoint, Size(nTextWidth, rDev.GetTextHeight())),
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aTmp;
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bool bSuccess = pGlyphDev->GetTextBoundRect(aTmp, rText);
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OSL_ENSURE( bSuccess, "GetTextBoundRect failed" );
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if (!aTmp.IsEmpty())
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{
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aResult = Rectangle(aTmp.Left() * nScaleFactor, aTmp.Top() * nScaleFactor,
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aTmp.Right() * nScaleFactor, aTmp.Bottom() * nScaleFactor);
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if (&rDev != pGlyphDev) /* only when rDev is a printer... */
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{
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long nGDTextWidth = pGlyphDev->GetTextWidth(rText);
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if (nGDTextWidth != 0 &&
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nTextWidth != nGDTextWidth)
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{
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aResult.Right() *= nTextWidth;
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aResult.Right() /= nGDTextWidth * nScaleFactor;
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}
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}
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}
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// move rectangle to match possibly different baselines
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// (because of different devices)
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long nDelta = aDevFM.GetAscent() - pGlyphDev->GetFontMetric().GetAscent() * nScaleFactor;
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aResult.Move(0, nDelta);
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pGlyphDev->Pop();
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rRect = aResult;
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return bSuccess;
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}
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bool SmIsMathAlpha(const OUString &rText)
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bool SmIsMathAlpha(const OUString &rText)
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// true iff symbol (from StarMath Font) should be treated as letter
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// true iff symbol (from StarMath Font) should be treated as letter
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@@ -62,8 +141,7 @@ bool SmIsMathAlpha(const OUString &rText)
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return aMathAlpha.find(cChar) != aMathAlpha.end();
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return aMathAlpha.find(cChar) != aMathAlpha.end();
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}
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}
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}
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// SmRect members
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SmRect::SmRect()
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SmRect::SmRect()
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@@ -542,83 +620,4 @@ SmRect SmRect::AsGlyphRect() const
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return aRect;
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return aRect;
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}
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}
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bool SmGetGlyphBoundRect(const vcl::RenderContext &rDev,
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const OUString &rText, Rectangle &rRect)
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// basically the same as 'GetTextBoundRect' (in class 'OutputDevice')
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// but with a string as argument.
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{
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// handle special case first
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if (rText.isEmpty())
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{
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rRect.SetEmpty();
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return true;
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}
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// get a device where 'OutputDevice::GetTextBoundRect' will be successful
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OutputDevice *pGlyphDev;
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if (rDev.GetOutDevType() != OUTDEV_PRINTER)
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pGlyphDev = const_cast<OutputDevice *>(&rDev);
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else
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{
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// since we format for the printer (where GetTextBoundRect will fail)
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// we need a virtual device here.
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pGlyphDev = &SM_MOD()->GetDefaultVirtualDev();
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}
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const FontMetric aDevFM (rDev.GetFontMetric());
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pGlyphDev->Push(PushFlags::FONT | PushFlags::MAPMODE);
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vcl::Font aFnt(rDev.GetFont());
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aFnt.SetAlignment(ALIGN_TOP);
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// use scale factor when calling GetTextBoundRect to counter
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// negative effects from antialiasing which may otherwise result
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// in significant incorrect bounding rectangles for some characters.
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Size aFntSize = aFnt.GetFontSize();
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// Workaround to avoid HUGE font sizes and resulting problems
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long nScaleFactor = 1;
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while( aFntSize.Height() > 2000 * nScaleFactor )
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nScaleFactor *= 2;
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aFnt.SetFontSize( Size( aFntSize.Width() / nScaleFactor, aFntSize.Height() / nScaleFactor ) );
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pGlyphDev->SetFont(aFnt);
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long nTextWidth = rDev.GetTextWidth(rText);
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Point aPoint;
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Rectangle aResult (aPoint, Size(nTextWidth, rDev.GetTextHeight())),
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aTmp;
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bool bSuccess = pGlyphDev->GetTextBoundRect(aTmp, rText);
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OSL_ENSURE( bSuccess, "GetTextBoundRect failed" );
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if (!aTmp.IsEmpty())
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{
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aResult = Rectangle(aTmp.Left() * nScaleFactor, aTmp.Top() * nScaleFactor,
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aTmp.Right() * nScaleFactor, aTmp.Bottom() * nScaleFactor);
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if (&rDev != pGlyphDev) /* only when rDev is a printer... */
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{
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long nGDTextWidth = pGlyphDev->GetTextWidth(rText);
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if (nGDTextWidth != 0 &&
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nTextWidth != nGDTextWidth)
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{
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aResult.Right() *= nTextWidth;
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aResult.Right() /= nGDTextWidth * nScaleFactor;
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}
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}
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}
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// move rectangle to match possibly different baselines
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// (because of different devices)
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long nDelta = aDevFM.GetAscent() - pGlyphDev->GetFontMetric().GetAscent() * nScaleFactor;
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aResult.Move(0, nDelta);
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pGlyphDev->Pop();
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rRect = aResult;
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return bSuccess;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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