void QgsColorRampComboBox::editSourceRamp()
{
QgsVectorColorRampV2* currentRamp = currentColorRamp();
if ( !currentRamp )
return;
QScopedPointer<QgsVectorColorRampV2> newRamp( currentRamp->clone() );
if ( newRamp->type() == "gradient" )
{
QgsVectorGradientColorRampV2* gradRamp = static_cast<QgsVectorGradientColorRampV2*>( newRamp.data() );
QgsVectorGradientColorRampV2Dialog dlg( gradRamp, this );
if ( dlg.exec() && gradRamp )
{
setSourceColorRamp( gradRamp );
emit sourceRampEdited();
}
}
else if ( newRamp->type() == "random" )
{
QgsVectorRandomColorRampV2* randRamp = static_cast<QgsVectorRandomColorRampV2*>( newRamp.data() );
QgsVectorRandomColorRampV2Dialog dlg( randRamp, this );
if ( dlg.exec() && randRamp )
{
setSourceColorRamp( randRamp );
emit sourceRampEdited();
}
}
else if ( newRamp->type() == "colorbrewer" )
{
QgsVectorColorBrewerColorRampV2* brewerRamp = static_cast<QgsVectorColorBrewerColorRampV2*>( newRamp.data() );
QgsVectorColorBrewerColorRampV2Dialog dlg( brewerRamp, this );
if ( dlg.exec() && brewerRamp )
{
setSourceColorRamp( brewerRamp );
emit sourceRampEdited();
}
}
else if ( newRamp->type() == "cpt-city" )
{
QgsCptCityColorRampV2* cptCityRamp = static_cast<QgsCptCityColorRampV2*>( newRamp.data() );
QgsCptCityColorRampV2Dialog dlg( cptCityRamp, this );
if ( dlg.exec() && cptCityRamp )
{
setSourceColorRamp( cptCityRamp );
emit sourceRampEdited();
}
}
}
void QgsGraduatedSymbolRendererV2::updateColorRamp( QgsVectorColorRampV2 *ramp, bool inverted )
{
int i = 0;
if ( ramp )
{
setSourceColorRamp( ramp );
setInvertedColorRamp( inverted );
}
if ( mSourceColorRamp )
{
foreach ( QgsRendererRangeV2 range, mRanges )
{
QgsSymbolV2 *symbol = range.symbol() ? range.symbol()->clone() : 0;
if ( symbol )
{
double colorValue;
if ( inverted )
colorValue = ( mRanges.count() > 1 ? ( double )( mRanges.count() - i - 1 ) / ( mRanges.count() - 1 ) : 0 );
else
colorValue = ( mRanges.count() > 1 ? ( double ) i / ( mRanges.count() - 1 ) : 0 );
symbol->setColor( mSourceColorRamp->color( colorValue ) );
}
updateRangeSymbol( i, symbol );
++i;
}
}
void QgsCategorizedSymbolRendererV2::updateColorRamp( QgsVectorColorRampV2* ramp, bool inverted )
{
setSourceColorRamp( ramp );
setInvertedColorRamp( inverted );
double num = mCategories.count() - 1;
double count = 0;
QgsRandomColorsV2* randomRamp = dynamic_cast<QgsRandomColorsV2*>( ramp );
if ( randomRamp )
{
//ramp is a random colors ramp, so inform it of the total number of required colors
//this allows the ramp to pregenerate a set of visually distinctive colors
randomRamp->setTotalColorCount( mCategories.count() );
}
foreach ( const QgsRendererCategoryV2 &cat, mCategories )
{
double value = count / num;
if ( mInvertedColorRamp ) value = 1.0 - value;
cat.symbol()->setColor( mSourceColorRamp->color( value ) );
count += 1;
}
