void ColorGridView::paintEvent(QPaintEvent *event)
{
// To make it clear, we do not use delegate at all
// QItemSelectionModel *selections = selectionModel();
QStyleOptionViewItem option = viewOptions();
QStyle::State state = option.state;
QBrush background = option.palette.base();
QPen foreground(option.palette.color(QPalette::WindowText));
QPen textPen(option.palette.color(QPalette::Text));
QPen highlightedPen(option.palette.color(QPalette::HighlightedText));
QPainter painter(viewport());
// close anti aliasing to make it more clear
// painter.setRenderHint(QPainter::Antialiasing);
painter.fillRect(event->rect(), background);
painter.setPen(Qt::white);
QBrush brush;
brush.setTextureImage(backgroundImg);
painter.setBrush(brush);
painter.translate(margin - horizontalScrollBar()->value(),
margin - verticalScrollBar()->value());
for(int i = 0; i<gridCount; ++i){
for(int j=0; j<gridCount; ++j){
painter.drawImage(i*(gridMargin+gridWidth),j*(gridMargin+gridWidth),
backgroundImg);
}
}
if( !model() )return;
for (int row = 0; row < model()->rowCount(rootIndex()); ++row) {
for(int column = 0; column < model()->columnCount(rootIndex()); ++column)
{
QModelIndex index = model()->index(row, column, rootIndex());
QColor color = model()->data(index).value<QColor>();
int j = index.row();
int i = index.column();
if(color.isValid()){
//draw white background to prevent disturbings of background if transparent color
painter.setBrush(Qt::white);
painter.drawRect(i*(gridMargin+gridWidth),j*(gridMargin+gridWidth),
gridWidth,gridWidth);
painter.setBrush(color);
painter.drawRect(i*(gridMargin+gridWidth),j*(gridMargin+gridWidth),
gridWidth,gridWidth);
}
}
}
QModelIndexList list = selectedIndexes();
if( !list.isEmpty() ){
QModelIndex index = list.at(0);
// Qt::ItemFlags flags = index.flags();
// if(flags.testFlag(QItemSelectionModel::Select)){
painter.setPen(textPen);
// }
// if(flags.testFlag(QItemSelectionModel::Toggle)){
// painter.setPen(highlightedPen);
// }
int row = index.row();
int column = index.column();
// QPointF start(column*(gridMargin+gridWidth),row*(gridMargin+gridWidth));
// QRadialGradient gradient(start+QPointF(gridWidth/2,gridWidth/2),0.1,start+QPointF(gridWidth,gridWidth));
// gradient.setColorAt(0.5,Qt::transparent);
// gradient.setColorAt(1.0,Qt::black);
// foreground = QPen(Qt::black);
// QBrush brush(gradient);
// brush.setStyle(Qt::RadialGradientPattern);
painter.setBrush(Qt::NoBrush);
// painter.setBrush(brush);
painter.drawRect(column*(gridMargin+gridWidth),row*(gridMargin+gridWidth),
gridWidth,gridWidth);
}
}
void PieView::paintEvent(QPaintEvent *event)
{
QItemSelectionModel *selections = selectionModel();
QStyleOptionViewItem option = viewOptions();
QStyle::State state = option.state;
QBrush background = option.palette.base();
QPen foreground(option.palette.color(QPalette::WindowText));
QPen textPen(option.palette.color(QPalette::Text));
QPen highlightedPen(option.palette.color(QPalette::HighlightedText));
QPainter painter(viewport());
painter.setRenderHint(QPainter::Antialiasing);
painter.fillRect(event->rect(), background);
painter.setPen(foreground);
// Viewport rectangles
QRect pieRect = QRect(margin, margin, pieSize, pieSize);
QPoint keyPoint = QPoint(totalSize - horizontalScrollBar()->value(),
margin - verticalScrollBar()->value());
if (validItems > 0) {
painter.save();
painter.translate(pieRect.x() - horizontalScrollBar()->value(),
pieRect.y() - verticalScrollBar()->value());
painter.drawEllipse(0, 0, pieSize, pieSize);
double startAngle = 0.0;
int row;
for (row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
double angle = 360*value/totalValue;
QModelIndex colorIndex = model()->index(row, 0, rootIndex());
QColor color = QColor(model()->data(colorIndex,
Qt::DecorationRole).toString());
if (currentIndex() == index)
painter.setBrush(QBrush(color, Qt::Dense4Pattern));
else if (selections->isSelected(index))
painter.setBrush(QBrush(color, Qt::Dense3Pattern));
else
painter.setBrush(QBrush(color));
painter.drawPie(0, 0, pieSize, pieSize, int(startAngle*16),
int(angle*16));
startAngle += angle;
}
}
painter.restore();
int keyNumber = 0;
for (row = 0; row < model()->rowCount(rootIndex()); ++row) {
QModelIndex index = model()->index(row, 1, rootIndex());
double value = model()->data(index).toDouble();
if (value > 0.0) {
QModelIndex labelIndex = model()->index(row, 0, rootIndex());
QStyleOptionViewItem option = viewOptions();
option.rect = visualRect(labelIndex);
if (selections->isSelected(labelIndex))
option.state |= QStyle::State_Selected;
if (currentIndex() == labelIndex)
option.state |= QStyle::State_HasFocus;
itemDelegate()->paint(&painter, option, labelIndex);
keyNumber++;
}
}
}
}
