void TextBox::layout()
{
font->setSize(fontSize);
if (updateLineHeightRequest && lineHeightFactor > 0)
{
lineHeight = font->getHeight() * lineHeightFactor;
}
if (updateWrapRequest)
{
if (wrap && !autoWidth)
{
wrapper.wrap(*font, text, width - paddingLeft - paddingRight);
}
else
{
contentWidth = wrapper.wrap(*font, text);
}
}
if (updateWidthRequest || updateWrapRequest)
{
if (autoWidth)
{
width = paddingLeft + contentWidth + paddingRight;
}
overflowX = !autoWidth && (contentWidth > (width - paddingLeft - paddingRight));
}
if (updateHeightRequest || updateWrapRequest || updateLineHeightRequest)
{
contentHeight = getLinesHeight(wrapper.size);
if (autoHeight)
{
height = paddingTop + contentHeight + paddingBottom;
}
overflowY = !autoHeight && (contentHeight > (height - paddingTop - paddingBottom));
}
updateLineHeightRequest = false;
updateWrapRequest = false;
updateWidthRequest = false;
updateHeightRequest = false;
}
void SWFontRenderer::updateMesh()
{
if ( !getMesh() ) return;
if ( !m_fontInfo.isValid() ) return;
SWMesh* mesh = getMesh();
mesh->resizeVertexStream( m_text.size() * 4 );
mesh->resizeTexCoordStream( m_text.size() * 4 );
mesh->resizeTriangleStream( m_text.size() * 2 );
tuint32 lastID = '\r';
tvec2 cursor( 0, 0 );
tvec2 scale( m_fontInfo()->getScaleW(), m_fontInfo()->getScaleH() );
float lineHeight = getLinesHeight( m_text );
switch ( m_alignV )
{
case SW_Align_Top : cursor.y = 0; break;
case SW_Align_Bottom : cursor.y = lineHeight; break;
case SW_Align_Center : cursor.y = lineHeight/2.0f; break;
}
for ( tuint i = 0 ; i < m_text.size() ; ++i )
{
//! convert character to unsigned char id
tbyte byteID = m_text[i];
tuint32 id = byteID;
if ( lastID == (int)'\n' || lastID == (int)'\r' )
{
float lineWidth = (float)getLineWidth( m_text, i );
switch ( m_alignH )
{
case SW_Align_Left : cursor.x = 0; break;
case SW_Align_Right : cursor.x = -lineWidth; break;
case SW_Align_Center : cursor.x = -lineWidth/2.0f; break;
}
}
if ( id == (int)'\n' || id == (int)'\r' )
{
lastID = id;
cursor.y -= m_fontInfo()->getLineHeight();
continue;
}
SWFontInfo::Char* fontChar = m_fontInfo()->getChar( id );
if ( fontChar == NULL ) continue;
SWFontInfo::Kerning* kerning = m_fontInfo()->getKerning( lastID, id );
cursor.x += (kerning != NULL)? kerning->amount : 0;
lastID = id;
tuint base = i*4;
float left = cursor.x + fontChar->xoffset;
float top = cursor.y - fontChar->yoffset;
float right = left + fontChar->width;
float bottom = top - fontChar->height;
cursor.x += fontChar->xadvence;
mesh->setTriangle( (i*2)+0, tindex3( base+0, base+1, base+2 ) );
mesh->setTriangle( (i*2)+1, tindex3( base+3, base+2, base+1 ) );
mesh->setVertex( base+0, tvec3( left, top, 0 ) );
mesh->setVertex( base+1, tvec3( right, top, 0 ) );
mesh->setVertex( base+2, tvec3( left, bottom, 0 ) );
mesh->setVertex( base+3, tvec3( right, bottom, 0 ) );
mesh->setTexCoord( base+0, tvec2( fontChar->x/scale.x, fontChar->y/scale.y ) );
mesh->setTexCoord( base+1, tvec2( (fontChar->x + fontChar->width)/scale.x, fontChar->y/scale.y ) );
mesh->setTexCoord( base+2, tvec2( fontChar->x/scale.x, (fontChar->y + fontChar->height)/scale.y ) );
mesh->setTexCoord( base+3, tvec2( (fontChar->x + fontChar->width)/scale.x, (fontChar->y + fontChar->height)/scale.y ) );
}
}
