QPixmap QgsColorButton::createMenuIcon( const QColor &color, const bool showChecks )
{
const int iconSize = QgsGuiUtils::scaleIconSize( 16 );
//create an icon pixmap
QPixmap pixmap( iconSize, iconSize );
pixmap.fill( Qt::transparent );
QPainter p;
p.begin( &pixmap );
//start with checkboard pattern
if ( showChecks )
{
QBrush checkBrush = QBrush( transparentBackground() );
p.setPen( Qt::NoPen );
p.setBrush( checkBrush );
p.drawRect( 0, 0, iconSize - 1, iconSize - 1 );
}
//draw color over pattern
p.setBrush( QBrush( color ) );
//draw border
p.setPen( QColor( 197, 197, 197 ) );
p.drawRect( 0, 0, iconSize - 1, iconSize - 1 );
p.end();
return pixmap;
}
void QgsColorPreviewWidget::drawColor( const QColor &color, QRect rect, QPainter& painter )
{
painter.setPen( Qt::NoPen );
//if color has an alpha, start with a checkboard pattern
if ( color.alpha() < 255 )
{
QBrush checkBrush = QBrush( transparentBackground() );
painter.setBrush( checkBrush );
painter.drawRect( rect );
//draw half of widget showing solid color, the other half showing color with alpha
//ensure at least a 1px overlap to avoid artifacts
QBrush colorBrush = QBrush( color );
painter.setBrush( colorBrush );
painter.drawRect( floor( rect.width() / 2.0 ) + rect.left(), rect.top(), rect.width() - floor( rect.width() / 2.0 ), rect.height() );
QColor opaqueColor = QColor( color );
opaqueColor.setAlpha( 255 );
QBrush opaqueBrush = QBrush( opaqueColor );
painter.setBrush( opaqueBrush );
painter.drawRect( rect.left(), rect.top(), ceil( rect.width() / 2.0 ), rect.height() );
}
else
{
//no alpha component, just draw a solid rectangle
QBrush brush = QBrush( color );
painter.setBrush( brush );
painter.drawRect( rect );
}
}
void QgsColorSwatchGrid::updateTooltip( const int colorIdx )
{
if ( colorIdx >= 0 && colorIdx < mColors.length() )
{
QColor color = mColors.at( colorIdx ).first;
//if color has an associated name from the color scheme, use that
QString colorName = mColors.at( colorIdx ).second;
// create very large preview swatch, because the grid itself has only tiny preview icons
int width = static_cast< int >( Qgis::UI_SCALE_FACTOR * fontMetrics().width( 'X' ) * 23 );
int height = static_cast< int >( width / 1.61803398875 ); // golden ratio
int margin = static_cast< int >( height * 0.1 );
QImage icon = QImage( width + 2 * margin, height + 2 * margin, QImage::Format_ARGB32 );
icon.fill( Qt::transparent );
QPainter p;
p.begin( &icon );
//start with checkboard pattern
QBrush checkBrush = QBrush( transparentBackground() );
p.setPen( Qt::NoPen );
p.setBrush( checkBrush );
p.drawRect( margin, margin, width, height );
//draw color over pattern
p.setBrush( QBrush( mColors.at( colorIdx ).first ) );
//draw border
p.setPen( QColor( 197, 197, 197 ) );
p.drawRect( margin, margin, width, height );
p.end();
QByteArray data;
QBuffer buffer( &data );
icon.save( &buffer, "PNG", 100 );
QString info;
if ( !colorName.isEmpty() )
info += QStringLiteral( "<h3>%1</h3><p>" ).arg( colorName );
info += QStringLiteral( "<b>HEX</b> %1<br>"
"<b>RGB</b> %2<br>"
"<b>HSV</b> %3,%4,%5<p>" ).arg( color.name(),
QgsSymbolLayerUtils::encodeColor( color ) )
.arg( color.hue() ).arg( color.saturation() ).arg( color.value() );
info += QStringLiteral( "<img src='data:image/png;base64, %0'>" ).arg( QString( data.toBase64() ) );
setToolTip( info );
}
else
{
//clear tooltip
setToolTip( QString() );
}
}
void QgsGradientStopEditor::paintEvent( QPaintEvent *event )
{
Q_UNUSED( event );
QPainter painter( this );
QRect frameRect( rect().x() + MARGIN_X, rect().y(),
rect().width() - 2 * MARGIN_X,
rect().height() - MARGIN_BOTTOM );
//draw frame
QStyleOptionFrame option;
option.initFrom( this );
option.state = hasFocus() ? QStyle::State_KeyboardFocusChange : QStyle::State_None;
option.rect = frameRect;
style()->drawPrimitive( QStyle::PE_Frame, &option, &painter );
if ( hasFocus() )
{
//draw focus rect
QStyleOptionFocusRect option;
option.initFrom( this );
option.state = QStyle::State_KeyboardFocusChange;
option.rect = frameRect;
style()->drawPrimitive( QStyle::PE_FrameFocusRect, &option, &painter );
}
//start with the checkboard pattern
QBrush checkBrush = QBrush( transparentBackground() );
painter.setBrush( checkBrush );
painter.setPen( Qt::NoPen );
QRect box( frameRect.x() + FRAME_MARGIN, frameRect.y() + FRAME_MARGIN,
frameRect.width() - 2 * FRAME_MARGIN,
frameRect.height() - 2 * FRAME_MARGIN );
painter.drawRect( box );
// draw gradient preview on top of checkerboard
for ( int i = 0; i < box.width() + 1; ++i )
{
QPen pen( mGradient.color( static_cast< double >( i ) / box.width() ) );
painter.setPen( pen );
painter.drawLine( box.left() + i, box.top(), box.left() + i, box.height() + 1 );
}
// draw stop markers
int markerTop = frameRect.bottom() + 1;
drawStopMarker( painter, QPoint( box.left(), markerTop ), mGradient.color1(), mSelectedStop == 0 );
drawStopMarker( painter, QPoint( box.right(), markerTop ), mGradient.color2(), mSelectedStop == mGradient.count() - 1 );
int i = 1;
Q_FOREACH ( const QgsGradientStop& stop, mStops )
{
int x = stop.offset * box.width() + box.left();
drawStopMarker( painter, QPoint( x, markerTop ), stop.color, mSelectedStop == i );
++i;
}
bool QgsColorButton::event( QEvent *e )
{
if ( e->type() == QEvent::ToolTip )
{
QColor c = linkedProjectColor();
bool isProjectColor = c.isValid();
if ( !isProjectColor )
c = mColor;
QString name = c.name();
int hue = c.hue();
int value = c.value();
int saturation = c.saturation();
// create very large preview swatch
int width = static_cast< int >( Qgis::UI_SCALE_FACTOR * fontMetrics().width( 'X' ) * 23 );
int height = static_cast< int >( width / 1.61803398875 ); // golden ratio
int margin = static_cast< int >( height * 0.1 );
QImage icon = QImage( width + 2 * margin, height + 2 * margin, QImage::Format_ARGB32 );
icon.fill( Qt::transparent );
QPainter p;
p.begin( &icon );
//start with checkboard pattern
QBrush checkBrush = QBrush( transparentBackground() );
p.setPen( Qt::NoPen );
p.setBrush( checkBrush );
p.drawRect( margin, margin, width, height );
//draw color over pattern
p.setBrush( QBrush( c ) );
//draw border
p.setPen( QColor( 197, 197, 197 ) );
p.drawRect( margin, margin, width, height );
p.end();
QByteArray data;
QBuffer buffer( &data );
icon.save( &buffer, "PNG", 100 );
QString info = ( isProjectColor ? QStringLiteral( "<p>%1: %2</p>" ).arg( tr( "Linked color" ), mLinkedColorName ) : QString() )
+ QStringLiteral( "<b>HEX</b> %1<br>"
"<b>RGB</b> %2<br>"
"<b>HSV</b> %3,%4,%5<p>"
"<img src='data:image/png;base64, %0'>" ).arg( QString( data.toBase64() ), name,
QgsSymbolLayerUtils::encodeColor( c ) )
.arg( hue ).arg( saturation ).arg( value );
setToolTip( info );
}
return QToolButton::event( e );
}
void QgsColorSwatchGrid::draw( QPainter &painter )
{
QPalette pal = QPalette( qApp->palette() );
QColor headerBgColor = pal.color( QPalette::Mid );
QColor headerTextColor = pal.color( QPalette::BrightText );
QColor highlight = pal.color( QPalette::Highlight );
//draw header background
painter.setBrush( headerBgColor );
painter.setPen( Qt::NoPen );
painter.drawRect( QRect( 0, 0, width(), mLabelHeight + 0.5 * mLabelMargin ) );
//draw header text
painter.setPen( headerTextColor );
painter.drawText( QRect( mLabelMargin, 0.25 * mLabelMargin, width() - 2 * mLabelMargin, mLabelHeight ),
Qt::AlignLeft | Qt::AlignVCenter, mScheme->schemeName() );
//draw color swatches
QgsNamedColorList::const_iterator colorIt = mColors.constBegin();
int index = 0;
for ( ; colorIt != mColors.constEnd(); ++colorIt )
{
int row = index / NUMBER_COLORS_PER_ROW;
int column = index % NUMBER_COLORS_PER_ROW;
QRect swatchRect = QRect( column * ( mSwatchSize + mSwatchSpacing ) + mSwatchMargin,
row * ( mSwatchSize + mSwatchSpacing ) + mSwatchMargin + mLabelHeight + 0.5 * mLabelMargin,
mSwatchSize, mSwatchSize );
if ( mCurrentHoverBox == index )
{
//hovered boxes are slightly larger
swatchRect.adjust( -1, -1, 1, 1 );
}
//start with checkboard pattern for semi-transparent colors
if ( ( *colorIt ).first.alpha() != 255 )
{
QBrush checkBrush = QBrush( transparentBackground() );
painter.setPen( Qt::NoPen );
painter.setBrush( checkBrush );
painter.drawRect( swatchRect );
}
if ( mCurrentHoverBox == index )
{
if ( mDrawBoxDepressed )
{
painter.setPen( QPen( QColor( 100, 100, 100 ), mSwatchOutlineSize ) );
}
else
{
//hover color
painter.setPen( QPen( QColor( 220, 220, 220 ), mSwatchOutlineSize ) );
}
}
else if ( mFocused && index == mCurrentFocusBox )
{
painter.setPen( highlight );
}
else if ( ( *colorIt ).first.name() == mBaseColor.name() )
{
//currently active color
painter.setPen( QPen( QColor( 75, 75, 75 ), mSwatchOutlineSize ) );
}
else
{
painter.setPen( QPen( QColor( 197, 197, 197 ), mSwatchOutlineSize ) );
}
painter.setBrush( ( *colorIt ).first );
painter.drawRect( swatchRect );
index++;
}
}
void QgsColorRampWidget::paintEvent( QPaintEvent *event )
{
Q_UNUSED( event );
QPainter painter( this );
if ( mShowFrame )
{
//draw frame
QStyleOptionFrameV3 option;
option.initFrom( this );
option.state = hasFocus() ? QStyle::State_KeyboardFocusChange : QStyle::State_None;
style()->drawPrimitive( QStyle::PE_Frame, &option, &painter );
}
if ( hasFocus() )
{
//draw focus rect
QStyleOptionFocusRect option;
option.initFrom( this );
option.state = QStyle::State_KeyboardFocusChange;
style()->drawPrimitive( QStyle::PE_FrameFocusRect, &option, &painter );
}
if ( mComponent != QgsColorWidget::Alpha )
{
int maxValue = ( mOrientation == QgsColorRampWidget::Horizontal ? width() : height() ) - 1 - 2 * mMargin;
QColor color = QColor( mCurrentColor );
color.setAlpha( 255 );
QPen pen;
pen.setWidth( 0 );
painter.setPen( pen );
painter.setBrush( Qt::NoBrush );
//draw background ramp
for ( int c = 0; c <= maxValue; ++c )
{
int colorVal = componentRange() * ( double )c / maxValue;
//vertical sliders are reversed
if ( mOrientation == QgsColorRampWidget::Vertical )
{
colorVal = componentRange() - colorVal;
}
alterColor( color, mComponent, colorVal );
if ( color.hue() < 0 )
{
color.setHsv( hue(), color.saturation(), color.value() );
}
pen.setColor( color );
painter.setPen( pen );
if ( mOrientation == QgsColorRampWidget::Horizontal )
{
//horizontal
painter.drawLine( c + mMargin, mMargin, c + mMargin, height() - mMargin - 1 );
}
else
{
//vertical
painter.drawLine( mMargin, c + mMargin, width() - mMargin - 1, c + mMargin );
}
}
}
else if ( mComponent == QgsColorWidget::Alpha )
{
//alpha ramps are drawn differently
//start with the checkboard pattern
QBrush checkBrush = QBrush( transparentBackground() );
painter.setBrush( checkBrush );
painter.setPen( Qt::NoPen );
painter.drawRect( mMargin, mMargin, width() - 2 * mMargin - 1, height() - 2 * mMargin - 1 );
QLinearGradient colorGrad;
if ( mOrientation == QgsColorRampWidget::Horizontal )
{
//horizontal
colorGrad = QLinearGradient( mMargin, 0, width() - mMargin - 1, 0 );
}
else
{
//vertical
colorGrad = QLinearGradient( 0, mMargin, 0, height() - mMargin - 1 );
}
QColor transparent = QColor( mCurrentColor );
transparent.setAlpha( 0 );
colorGrad.setColorAt( 0, transparent );
QColor opaque = QColor( mCurrentColor );
opaque.setAlpha( 255 );
colorGrad.setColorAt( 1, opaque );
QBrush colorBrush = QBrush( colorGrad );
painter.setBrush( colorBrush );
painter.drawRect( mMargin, mMargin, width() - 2 * mMargin - 1, height() - 2 * mMargin - 1 );
}
if ( mOrientation == QgsColorRampWidget::Horizontal )
{
//draw marker triangles for horizontal ramps
painter.setRenderHint( QPainter::Antialiasing );
painter.setBrush( QBrush( Qt::black ) );
painter.setPen( Qt::NoPen );
painter.translate( mMargin + ( width() - 2 * mMargin ) * ( double )componentValue() / componentRange(), mMargin - 1 );
painter.drawPolygon( mTopTriangle );
painter.translate( 0, height() - mMargin - 2 );
painter.setBrush( QBrush( Qt::white ) );
painter.drawPolygon( mBottomTriangle );
painter.end();
}
else
{
//draw cross lines for vertical ramps
int ypos = mMargin + ( height() - 2 * mMargin - 1 ) - ( height() - 2 * mMargin - 1 ) * ( double )componentValue() / componentRange();
painter.setBrush( Qt::white );
painter.setPen( Qt::NoPen );
painter.drawRect( mMargin, ypos - 1, width() - 2 * mMargin - 1, 3 );
painter.setPen( Qt::black );
painter.drawLine( mMargin, ypos, width() - mMargin - 1, ypos );
}
}
void QgsColorButton::setButtonBackground( const QColor &color )
{
QColor backgroundColor = color;
bool isProjectColor = false;
if ( !backgroundColor.isValid() && !mLinkedColorName.isEmpty() )
{
backgroundColor = linkedProjectColor();
isProjectColor = backgroundColor.isValid();
if ( !isProjectColor )
{
mLinkedColorName.clear(); //color has been deleted, renamed, etc...
emit unlinked();
}
}
if ( !backgroundColor.isValid() )
{
backgroundColor = mColor;
}
QSize currentIconSize;
//icon size is button size with a small margin
if ( menu() )
{
if ( !mIconSize.isValid() )
{
//calculate size of push button part of widget (ie, without the menu drop-down button part)
QStyleOptionToolButton opt;
initStyleOption( &opt );
QRect buttonSize = QApplication::style()->subControlRect( QStyle::CC_ToolButton, &opt, QStyle::SC_ToolButton,
this );
//make sure height of icon looks good under different platforms
#ifdef Q_OS_WIN
mIconSize = QSize( buttonSize.width() - 10, height() - 6 );
#else
mIconSize = QSize( buttonSize.width() - 10, height() - 12 );
#endif
}
currentIconSize = mIconSize;
}
else
{
//no menu
#ifdef Q_OS_WIN
currentIconSize = QSize( width() - 10, height() - 6 );
#else
currentIconSize = QSize( width() - 10, height() - 12 );
#endif
}
if ( !currentIconSize.isValid() || currentIconSize.width() <= 0 || currentIconSize.height() <= 0 )
{
return;
}
//create an icon pixmap
QPixmap pixmap( currentIconSize );
pixmap.fill( Qt::transparent );
if ( backgroundColor.isValid() )
{
QRect rect( 0, 0, currentIconSize.width(), currentIconSize.height() );
QPainter p;
p.begin( &pixmap );
p.setRenderHint( QPainter::Antialiasing );
p.setPen( Qt::NoPen );
if ( mAllowOpacity && backgroundColor.alpha() < 255 )
{
//start with checkboard pattern
QBrush checkBrush = QBrush( transparentBackground() );
p.setBrush( checkBrush );
p.drawRoundedRect( rect, 3, 3 );
}
//draw semi-transparent color on top
p.setBrush( backgroundColor );
p.drawRoundedRect( rect, 3, 3 );
p.end();
}
setIconSize( currentIconSize );
setIcon( pixmap );
}
void QgsColorSwatchGrid::draw( QPainter &painter )
{
QPalette pal = QPalette( qApp->palette() );
QColor headerBgColor = pal.color( QPalette::Mid );
QColor headerTextColor = pal.color( QPalette::BrightText );
QColor highlight = pal.color( QPalette::Highlight );
//draw header background
painter.setBrush( headerBgColor );
painter.setPen( Qt::NoPen );
painter.drawRect( QRect( 0, 0, width(), LABEL_SIZE ) );
//draw header text
painter.setPen( headerTextColor );
painter.drawText( QRect( LABEL_MARGIN, 0, width() - 2 * LABEL_MARGIN, LABEL_SIZE ),
Qt::AlignLeft | Qt::AlignVCenter, mScheme->schemeName() );
//draw color swatches
QgsNamedColorList::iterator colorIt = mColors.begin();
int index = 0;
for ( ; colorIt != mColors.end(); ++colorIt )
{
int row = index / NUMBER_COLORS_PER_ROW;
int column = index % NUMBER_COLORS_PER_ROW;
QRect swatchRect = QRect( column * ( SWATCH_SIZE + SWATCH_SPACING ) + LEFT_MARGIN,
row * ( SWATCH_SIZE + SWATCH_SPACING ) + TOP_MARGIN + LABEL_SIZE,
SWATCH_SIZE, SWATCH_SIZE );
if ( mCurrentHoverBox == index )
{
//hovered boxes are slightly larger
swatchRect.adjust( -1, -1, 1, 1 );
}
//start with checkboard pattern for semi-transparent colors
if (( *colorIt ).first.alpha() != 255 )
{
QBrush checkBrush = QBrush( transparentBackground() );
painter.setPen( Qt::NoPen );
painter.setBrush( checkBrush );
painter.drawRect( swatchRect );
}
if ( mCurrentHoverBox == index )
{
if ( mDrawBoxDepressed )
{
painter.setPen( QColor( 100, 100, 100 ) );
}
else
{
//hover color
painter.setPen( QColor( 220, 220, 220 ) );
}
}
else if ( mFocused && index == mCurrentFocusBox )
{
painter.setPen( highlight );
}
else if (( *colorIt ).first.name() == mBaseColor.name() )
{
//currently active color
painter.setPen( QColor( 75, 75, 75 ) );
}
else
{
painter.setPen( QColor( 197, 197, 197 ) );
}
painter.setBrush(( *colorIt ).first );
painter.drawRect( swatchRect );
index++;
}
}
