void CHuiRasterizedTextMesh::UpdateMeshL(const TDesC8& aBuffer)
{
iUsingPreRasterizedMesh = ETrue;
ResetLines();
RDesReadStream stream(aBuffer);
TInt count = stream.ReadInt32L();
for (TInt i=count-1;i>=0;i--)
{
// lines are in reverse order
SRasterizedLine line;
line.iTexture = dynamic_cast<CHuiTexture*>((MHuiTexture*)stream.ReadInt32L()); //scary
line.iGap = stream.ReadInt32L();
iLines.InsertL(line, 0);
}
TSize extents;
extents.iWidth = stream.ReadInt32L();
extents.iHeight = stream.ReadInt32L();
SetExtents(extents);
stream.Close();
if (RasterizedShadow()) // update shadow
{
for (TInt i = iLines.Count()-1; i >=0; i-- )
{
if (iLines[i].iTexture)
{
const TInt requestedBlurredSize = HUI_ROUND_FLOAT_TO_INT( 2*iVisual->DropShadowHandler()->iRadius.Now() );
iLines[i].iTexture->CreateShadowTextureL( requestedBlurredSize, EHuiTextureShadowStyleRasterizedText );
}
}
}
}
/* Scale the old line coordinates to the new Xmax and Ymax coordinates.
The new Xmax and new Ymax are passed in as parameters so we can
calculate the scaling ratios. */
void TList::ScaleTo( int NewXmax, int NewYmax )
{
int I;
float RatioX, RatioY;
if ((!Xmax) || (!Ymax)) { /* at startup, Xmax and Ymax are zero */
Xmax = NewXmax;
Ymax = NewYmax;
ResetLines();
} else {
RatioX = NewXmax / Xmax;
RatioY = NewYmax / Ymax;
X1 = X1 * RatioX;
X2 = X2 * RatioX;
Y1 = Y1 * RatioY;
Y2 = Y2 * RatioY;
for( I = 0; I < MaxLines; I++) {
Line[I].LX1 = Line[I].LX1 * RatioX;
Line[I].LX2 = Line[I].LX2 * RatioX;
Line[I].LY1 = Line[I].LY1 * RatioY;
Line[I].LY2 = Line[I].LY2 * RatioY;
};
};
Xmax = NewXmax;
Ymax = NewYmax;
};
CHuiRasterizedTextMesh::~CHuiRasterizedTextMesh()
{
ResetLines();
iLines.Close();
ResetPictographLines();
iPictographLines.Close();
delete iPictographBitmap;
}
~CAlfRasterizedTextMesh()
{
ResetLines(ETrue);
iLines.Close();
ReleaseTextures(ETrue);
iObsoleteTextures.Close();
delete iBuf;
}
void CHuiRasterizedTextMesh::Reset()
{
if (!iUsingPreRasterizedMesh)
{
CHuiTextMesh::Reset();
ResetLines();
ResetPictographLines();
}
}
void DoBuildL(CAlfTextStyle* aTextStyle)
{
ResetLines();
TSize extents(0, 0);
const TDesC& text = iVisual->Text();
// Retrieve the CFont object used when rasterizing this text mesh.
CFont* font = aTextStyle->Font()->NearestFontL(1.0);
// In wrapping mode, let the mesh know how much space there is
// for drawing into.
TInt maxWidth = iMaxWidth; //KMaxTInt;
TInt lineCount = 0;
// awkward, just to avoid warning
CArrayFixFlat<TPtrC>* linePtrs = 0;
HBufC* buf = 0;
switch(iVisual->Wrapping())
{
case CAlfTextVisual::ELineWrapManual:
{
lineCount = 1;
for (TInt i = text.Length()-2;i>=0;i--) // linebreak as last character is ignored
{
if (text[i]=='\n') // not elegant but keeps the compatibility
lineCount++;
}
if (lineCount > 1)
{
TInt lineStart = 0;
TInt breakpos = 0;
TInt remaining = text.Length();
while(lineCount)
{
for (TInt i = lineStart; i<remaining ;i++)
{
if (text[i]=='\n') // not elegant but keeps the compatibility
{
breakpos = i;
break;
}
}
if (breakpos < lineStart) // not found
{
breakpos = remaining-1;
}
HBufC* buf = text.Mid(lineStart,breakpos-lineStart).AllocLC(); // todo.. is extra space required for bidi
lineStart = breakpos+1;
TPtr ptr = buf->Des();
// truncate line
AknBidiTextUtils::ConvertToVisualAndClipL(ptr, *font, maxWidth, maxWidth);
// create the line entry if not already existing
SRasterizedLine line;
line.iTexture = NULL;
line.iGap = 0;
iLines.AppendL(line);
TInt index = iLines.Count()-1;
// rasterize a single line (updates texture in iLines[0].iTexture)
RasterizeLineL(ptr, iLines[index], aTextStyle);
// Get extents from the texture we just created
CAlfTexture* tex = iLines[index].iTexture;
extents.iHeight += iLines[index].iGap;
if(tex)
{
extents.iWidth = Max(extents.iWidth, tex->Size().iWidth);
extents.iHeight += tex->Size().iHeight;
}
CleanupStack::PopAndDestroy(buf);
lineCount--;
}
break;
}
} // fall through with single line
case CAlfTextVisual::ELineWrapTruncate:
{
lineCount = 1; // there's always one line created per logical line
HBufC* buf = text.AllocLC(); // todo.. is extra space required for bidi
TPtr ptr = buf->Des();
// truncate line
AknBidiTextUtils::ConvertToVisualAndClipL(ptr, *font, maxWidth, maxWidth);
// create the line entry if not already existing
SRasterizedLine line;
line.iTexture = NULL;
line.iGap = 0;
iLines.AppendL(line);
// rasterize a single line (updates texture in iLines[0].iTexture)
RasterizeLineL(ptr, iLines[0], aTextStyle);
// Get extents from the texture we just created
CAlfTexture* tex = iLines[0].iTexture;
extents.iHeight += iLines[0].iGap;
if(tex)
{
extents.iWidth = Max(extents.iWidth, tex->Size().iWidth);
extents.iHeight += tex->Size().iHeight;
}
CleanupStack::PopAndDestroy(buf);
break;
}
case CAlfTextVisual::ELineWrapBreak:
{
// wrap lines to array
linePtrs = new (ELeave) CArrayFixFlat<TPtrC>(KLineArrayGranularity);
CleanupStack::PushL(linePtrs);
buf = AknBidiTextUtils::ConvertToVisualAndWrapToArrayL(
text, maxWidth, *font, *linePtrs);
CleanupStack::PushL(buf);
// Do rasterisation
for(TInt i = 0; i < linePtrs->Count();i++)
{
SRasterizedLine line;
line.iTexture = NULL;
line.iGap = 0;
iLines.AppendL(line);
// rasterize a single line (updates texture in iLines[i].iTexture)
RasterizeLineL(linePtrs->At(i), iLines[i], aTextStyle);
CAlfTexture* tex = iLines[i].iTexture;
extents.iHeight += iLines[i].iGap;
if(tex)
{
extents.iWidth = Max(extents.iWidth, tex->Size().iWidth);
extents.iHeight += tex->Size().iHeight;
}
if (i == iVisual->MaxLineCount()-1)
{
// Maximum number of lines reached.
break;
}
}
CleanupStack::PopAndDestroy(buf);
CleanupStack::PopAndDestroy(linePtrs);
break;
}
default:
break;
}
// Extents needs to be updated in order to make alignment
// work properly.
iExtents = extents;
UpdateDescriptorL();
}
