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Workaround for font bug in the composer vector legend, plus a little
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cleanup.


git-svn-id: http://svn.osgeo.org/qgis/trunk@7368 c8812cc2-4d05-0410-92ff-de0c093fc19c
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StevenB authored and StevenB committed Nov 10, 2007
1 parent 17ba5c8 commit 87b3240
Showing 1 changed file with 47 additions and 40 deletions.
87 changes: 47 additions & 40 deletions src/app/composer/qgscomposervectorlegend.cpp
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Expand Up @@ -40,7 +40,7 @@ QgsComposerVectorLegend::QgsComposerVectorLegend ( QgsComposition *composition,
{
setupUi(this);

std::cout << "QgsComposerVectorLegend::QgsComposerVectorLegend()" << std::endl;
//std::cout << "QgsComposerVectorLegend::QgsComposerVectorLegend()" << std::endl;

mComposition = composition;
mId = id;
Expand All @@ -49,8 +49,8 @@ QgsComposerVectorLegend::QgsComposerVectorLegend ( QgsComposition *composition,
init();

// Font and pen
if(fontSize < 6){
fontSize = 6;
if(fontSize < 10){
fontSize = 10;
}
mFont.setPointSize ( fontSize );

Expand All @@ -75,7 +75,7 @@ QgsComposerVectorLegend::QgsComposerVectorLegend ( QgsComposition *composition,
QgsComposerVectorLegend::QgsComposerVectorLegend ( QgsComposition *composition, int id )
: QGraphicsRectItem(0,0,10,10,0)
{
std::cout << "QgsComposerVectorLegend::QgsComposerVectorLegend()" << std::endl;
//std::cout << "QgsComposerVectorLegend::QgsComposerVectorLegend()" << std::endl;

setupUi(this);

Expand Down Expand Up @@ -145,12 +145,13 @@ void QgsComposerVectorLegend::init ( void )

QgsComposerVectorLegend::~QgsComposerVectorLegend()
{
std::cerr << "QgsComposerVectorLegend::~QgsComposerVectorLegend()" << std::endl;
//std::cerr << "QgsComposerVectorLegend::~QgsComposerVectorLegend()" << std::endl;
}

#define FONT_WORKAROUND_SCALE 10
QRectF QgsComposerVectorLegend::render ( QPainter *p )
{
std::cout << "QgsComposerVectorLegend::render p = " << p << std::endl;
//std::cout << "QgsComposerVectorLegend::render p = " << p << std::endl;

// Painter can be 0, create dummy to avoid many if below
QPainter *painter = NULL;
Expand All @@ -162,16 +163,16 @@ QRectF QgsComposerVectorLegend::render ( QPainter *p )
painter = new QPainter( pixmap );
}

std::cout << "mComposition->scale() = " << mComposition->scale() << std::endl;
//std::cout << "mComposition->scale() = " << mComposition->scale() << std::endl;

// Font size in canvas units
float titleSize = 25.4 * mComposition->scale() * mTitleFont.pointSizeFloat() / 72;
float sectionSize = 25.4 * mComposition->scale() * mSectionFont.pointSizeFloat() / 72;
float size = 25.4 * mComposition->scale() * mFont.pointSizeFloat() / 72;

std::cout << "font sizes = " << titleSize << " " << sectionSize << " " << size << std::endl;
//std::cout << "font sizes = " << titleSize << " " << sectionSize << " " << size << std::endl;

// Metrics
// Create fonts
QFont titleFont ( mTitleFont );
QFont sectionFont ( mSectionFont );
QFont font ( mFont );
Expand All @@ -180,43 +181,50 @@ QRectF QgsComposerVectorLegend::render ( QPainter *p )
sectionFont.setPointSizeFloat ( sectionSize );
font.setPointSizeFloat ( size );

// Not sure about Style Strategy, QFont::PreferMatch?
titleFont.setStyleStrategy ( (QFont::StyleStrategy) (QFont::PreferOutline | QFont::PreferAntialias) );
sectionFont.setStyleStrategy ( (QFont::StyleStrategy) (QFont::PreferOutline | QFont::PreferAntialias) );
font.setStyleStrategy ( (QFont::StyleStrategy) (QFont::PreferOutline | QFont::PreferAntialias) );


QFontMetrics titleMetrics ( titleFont );
QFontMetrics sectionMetrics ( sectionFont );
QFontMetrics metrics ( font );

// Fonts for Postscript rendering
double psTitleSize = titleMetrics.ascent() * 72.0 / mComposition->resolution(); //What??
double psSectionSize = sectionMetrics.ascent() * 72.0 / mComposition->resolution();
double psSize = metrics.ascent() * 72.0 / mComposition->resolution();

if ( plotStyle() == QgsComposition::Postscript) //do we need seperate PostScript rendering settings?
{
titleFont.setPointSizeFloat ( psTitleSize );
sectionFont.setPointSizeFloat ( psSectionSize );
font.setPointSizeFloat ( psSize );
// Fonts sizes for Postscript rendering
double psTitleSize = titleMetrics.ascent() * 72.0 / mComposition->resolution(); //What??
double psSectionSize = sectionMetrics.ascent() * 72.0 / mComposition->resolution();
double psSize = metrics.ascent() * 72.0 / mComposition->resolution();

titleFont.setPointSizeFloat ( psTitleSize * FONT_WORKAROUND_SCALE );
sectionFont.setPointSizeFloat ( psSectionSize * FONT_WORKAROUND_SCALE );
font.setPointSizeFloat ( psSize * FONT_WORKAROUND_SCALE );
}
else
{
titleFont.setPointSizeFloat ( titleSize );
sectionFont.setPointSizeFloat ( sectionSize );
font.setPointSizeFloat ( size );
titleFont.setPointSizeFloat ( titleSize * FONT_WORKAROUND_SCALE );
sectionFont.setPointSizeFloat ( sectionSize * FONT_WORKAROUND_SCALE );
font.setPointSizeFloat ( size * FONT_WORKAROUND_SCALE );
}

// Not sure about Style Strategy, QFont::PreferMatch?
titleFont.setStyleStrategy ( (QFont::StyleStrategy) (QFont::PreferOutline | QFont::PreferAntialias) );
sectionFont.setStyleStrategy ( (QFont::StyleStrategy) (QFont::PreferOutline | QFont::PreferAntialias) );
font.setStyleStrategy ( (QFont::StyleStrategy) (QFont::PreferOutline | QFont::PreferAntialias) );

int x, y;

// Legend title -if we do this later, we can center it
y = mMargin + titleMetrics.height();
painter->setPen ( mPen );
painter->setFont ( titleFont );

painter->drawText( (int) (2*mMargin), y, mTitle );

//used to keep track of total width and height
painter->save(); //Save the painter state so we can undo the scaling later
painter->scale(1./FONT_WORKAROUND_SCALE, 1./FONT_WORKAROUND_SCALE); //scale the painter to work around the font bug

painter->drawText( 2 * mMargin * FONT_WORKAROUND_SCALE, y * FONT_WORKAROUND_SCALE, mTitle );

painter->restore();

//used to keep track of total width and height - probably should be changed to float/double
int width = 4 * mMargin + titleMetrics.width ( mTitle );
int height = mMargin + mSymbolSpace + titleMetrics.height(); // mSymbolSpace?

Expand Down Expand Up @@ -308,9 +316,9 @@ QRectF QgsComposerVectorLegend::render ( QPainter *p )

if ( itemLabels[icnt].length() == 0 ) {
if ( sym->label().length() > 0 ) {
itemLabels[icnt] = sym->label();
itemLabels[icnt] = sym->label();
} else {
itemLabels[icnt] = sym->lowerValue();
itemLabels[icnt] = sym->lowerValue();
if (sym->upperValue().length() > 0)
itemLabels[icnt] += " - " + sym->upperValue();
}
Expand All @@ -334,7 +342,11 @@ QRectF QgsComposerVectorLegend::render ( QPainter *p )
painter->setPen ( mPen );
painter->setFont ( sectionFont );

painter->drawText( x, y, sectionTitle );
painter->save(); //Save the painter state so we can undo the scaling later
painter->scale(1./FONT_WORKAROUND_SCALE, 1./FONT_WORKAROUND_SCALE); //scale the painter to work around the font bug

painter->drawText( x * FONT_WORKAROUND_SCALE, y * FONT_WORKAROUND_SCALE, sectionTitle );
painter->restore();

int w = 3*mMargin + sectionMetrics.width( sectionTitle );
if ( w > width ) width = w;
Expand Down Expand Up @@ -369,20 +381,13 @@ QRectF QgsComposerVectorLegend::render ( QPainter *p )
QPen pen = sym->pen();
double widthScale = map->widthScale();

std::cout << "widthScale: " << widthScale << std::endl;

pen.setWidthF( ( widthScale * pen.widthF() ) );
painter->setPen ( pen );
painter->setBrush ( sym->brush() );

if ( vector->vectorType() == QGis::Point ) {
double scale = map->symbolScale();// * mComposition->scale();
double scale = map->symbolScale();

/* if (plotStyle() != QgsComposition::Preview)
{
scale /= mComposition->viewScale();
}
*/
// Get the picture of appropriate size directly from catalogue
QPixmap pic = QPixmap::fromImage(sym->getPointSymbolAsImage(widthScale,false,sym->color()));

Expand Down Expand Up @@ -417,9 +422,11 @@ std::cout << "widthScale: " << widthScale << std::endl;
QRect br = metrics.boundingRect ( lab );
x = (int) ( 2*mMargin + mSymbolWidth );
y = (int) ( localHeight + symbolHeight/2 + ( metrics.height()/2 - metrics.descent()) );
painter->save(); //Save the painter state so we can undo the scaling later
painter->scale(1./FONT_WORKAROUND_SCALE, 1./FONT_WORKAROUND_SCALE); //scale the painter to work around the font bug

painter->drawText( x, y, lab );

painter->drawText( x * FONT_WORKAROUND_SCALE, y * FONT_WORKAROUND_SCALE, lab );
painter->restore();
int w = 3*mMargin + mSymbolWidth + metrics.width(lab);
if ( w > width ) width = w;

Expand Down

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