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libreoffice/0001-Resolves-rhbz-684580-X...

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From 53e2bdb610cb46b8a2482c742820e2dbe80bfc47 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
Date: Tue, 29 Mar 2011 14:00:33 +0100
Subject: [PATCH] Resolves: rhbz#684580 'X' and '/' strike-through escapes range
i.e. it bleeds outside the text it is supposed to affect. See #i114076#,
---
vcl/source/gdi/outdev3.cxx | 46 ++++++++++++++++++++++++-------------
vcl/source/gdi/pdfwriter_impl.cxx | 23 ++++++++++++++++++
2 files changed, 53 insertions(+), 16 deletions(-)
diff --git a/vcl/source/gdi/outdev3.cxx b/vcl/source/gdi/outdev3.cxx
index 02febe3..d43c163 100644
--- a/vcl/source/gdi/outdev3.cxx
+++ b/vcl/source/gdi/outdev3.cxx
@@ -3967,6 +3967,11 @@
FontStrikeout eStrikeout,
Color aColor )
{
+ //See qadevOOo/testdocs/StrikeThrough.odt for examples if you need
+ //to tweak this
+ if (!nWidth)
+ return;
+
// PDF-export does its own strikeout drawing... why again?
if( mpPDFWriter && mpPDFWriter->isBuiltinFont(mpFontEntry->maFontSelData.mpFontData) )
return;
@@ -3984,25 +3989,7 @@
aChars[i] = cStrikeoutChar;
const String aStrikeoutTest( aChars, nTestStrLen );
- // calculate approximation of strikeout atom size
- long nStrikeoutWidth = nWidth;
- SalLayout* pLayout = ImplLayout( aStrikeoutTest, 0, nTestStrLen );
- if( pLayout )
- {
- nStrikeoutWidth = (pLayout->GetTextWidth() +nTestStrLen/2) / (nTestStrLen * pLayout->GetUnitsPerPixel());
- pLayout->Release();
- }
- if( nStrikeoutWidth <= 0 ) // sanity check
- return;
-
- // calculate acceptable strikeout length
- // allow the strikeout to be one pixel larger than the text it strikes out
- long nMaxWidth = nStrikeoutWidth / 2;
- if ( nMaxWidth < 2 )
- nMaxWidth = 2;
- nMaxWidth += nWidth + 1;
-
- int nStrikeStrLen = (nMaxWidth + nStrikeoutWidth - 1) / nStrikeoutWidth;
+ int nStrikeStrLen = (nWidth+(nStrikeoutWidth-1)) / nStrikeoutWidth;
// if the text width is smaller than the strikeout text, then do not
// strike out at all. This case requires user interaction, e.g. adding
// a space to the text
@@ -4034,8 +4021,28 @@
ImplInitTextColor();
pLayout->DrawBase() = Point( nX+mnTextOffX, nY+mnTextOffY );
+
+ Rectangle aPixelRect;
+ aPixelRect.nLeft = nBaseX+mnTextOffX;
+ aPixelRect.nRight = aPixelRect.nLeft+nWidth;
+ aPixelRect.nBottom = nBaseY+mpFontEntry->maMetric.mnDescent;
+ aPixelRect.nTop = nBaseY-mpFontEntry->maMetric.mnAscent;
+
+ if (mpFontEntry->mnOrientation)
+ {
+ Polygon aPoly( aPixelRect );
+ aPoly.Rotate( Point(nBaseX+mnTextOffX, nBaseY+mnTextOffY), mpFontEntry->mnOrientation);
+ aPixelRect = aPoly.GetBoundRect();
+ }
+
+ Push( PUSH_CLIPREGION );
+ IntersectClipRegion( PixelToLogic(aPixelRect) );
+ if( mbInitClipRegion )
+ ImplInitClipRegion();
+
pLayout->DrawText( *mpGraphics );
pLayout->Release();
+ Pop();
SetTextColor( aOldColor );
ImplInitTextColor();
diff --git a/vcl/source/gdi/pdfwriter_impl.cxx b/vcl/source/gdi/pdfwriter_impl.cxx
index 442a25d..485dad3 100644
--- a/vcl/source/gdi/pdfwriter_impl.cxx
+++ b/vcl/source/gdi/pdfwriter_impl.cxx
@@ -8223,6 +8223,9 @@
void PDFWriterImpl::drawStrikeoutChar( const Point& rPos, long nWidth, FontStrikeout eStrikeout )
{
+ //See qadevOOo/testdocs/StrikeThrough.odt for examples if you need
+ //to tweak this
+
String aStrikeoutChar = String::CreateFromAscii( eStrikeout == STRIKEOUT_SLASH ? "/" : "X" );
String aStrikeout = aStrikeoutChar;
while( m_pReferenceDevice->GetTextWidth( aStrikeout ) < nWidth )
@@ -8244,7 +8247,28 @@
// strikeout string is left aligned non-CTL text
ULONG nOrigTLM = m_pReferenceDevice->GetLayoutMode();
m_pReferenceDevice->SetLayoutMode( TEXT_LAYOUT_BIDI_STRONG|TEXT_LAYOUT_COMPLEX_DISABLED );
+
+ push( PUSH_CLIPREGION );
+ FontMetric aRefDevFontMetric = m_pReferenceDevice->GetFontMetric();
+ Rectangle aRect;
+ aRect.nLeft = rPos.X();
+ aRect.nRight = aRect.nLeft+nWidth;
+ aRect.nBottom = rPos.Y()+aRefDevFontMetric.GetDescent();
+ aRect.nTop = rPos.Y()-aRefDevFontMetric.GetAscent();
+
+ ImplFontEntry* pFontEntry = m_pReferenceDevice->mpFontEntry;
+ if (pFontEntry->mnOrientation)
+ {
+ Polygon aPoly( aRect );
+ aPoly.Rotate( rPos, pFontEntry->mnOrientation);
+ aRect = aPoly.GetBoundRect();
+ }
+
+ intersectClipRegion( aRect );
+
drawText( rPos, aStrikeout, 0, aStrikeout.Len(), false );
+ pop();
+
m_pReferenceDevice->SetLayoutMode( nOrigTLM );
if ( bShadow )
--
1.7.4.1