136 lines
4.2 KiB
C++
136 lines
4.2 KiB
C++
#include "ProjectItem.h"
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#include "Common.h"
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#include <QIcon>
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#include <QPainter>
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#include <algorithm>
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ProjectItemDelegate::ProjectItemDelegate(QWidget* parent) : QStyledItemDelegate(parent) {}
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void ProjectItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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painter->save();
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QStyleOptionViewItem opt(option);
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initStyleOption(&opt, index);
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auto rect = opt.rect;
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if (opt.state & QStyle::State_Selected) {
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painter->fillRect(rect, opt.palette.highlight());
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painter->setPen(opt.palette.highlightedText().color());
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} else if (opt.state & QStyle::State_MouseOver) {
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painter->fillRect(rect, opt.palette.window());
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}
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// The default icon size will be a square (and height is usually the lower value).
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auto icon_width = rect.height(), icon_height = rect.height();
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int icon_x_margin = (rect.height() - icon_width) / 2;
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int icon_y_margin = (rect.height() - icon_height) / 2;
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if (!opt.icon.isNull()) { // Icon painting
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{
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auto icon_size = opt.decorationSize;
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icon_width = icon_size.width();
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icon_height = icon_size.height();
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float desired_dim = rect.height() - 10;
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auto scaleRatio = icon_width > icon_height ? desired_dim / icon_width : desired_dim / icon_height;
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icon_width *= scaleRatio;
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icon_height *= scaleRatio;
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icon_x_margin = (rect.height() - icon_width) / 2;
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icon_y_margin = (rect.height() - icon_height) / 2;
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}
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// Centralize icon with a margin to separate from the other elements
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int x = rect.x() + icon_x_margin;
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int y = rect.y() + icon_y_margin;
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// Prevent 'scaling null pixmap' warnings
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if (icon_width > 0 && icon_height > 0)
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opt.icon.paint(painter, x, y, icon_width, icon_height);
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}
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// Change the rect so that further painting is easier
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rect.setTopLeft(QPoint(rect.x() + icon_width + 2 * icon_x_margin, rect.y() + 4));
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{ // Title painting
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auto title = index.data(UserDataTypes::TITLE).toString();
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painter->save();
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auto font = opt.font;
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if (index.data(UserDataTypes::SELECTED).toBool()) {
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// Set nice font
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font.setBold(true);
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font.setUnderline(true);
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}
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font.setPointSize(font.pointSize() + 2);
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painter->setFont(font);
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QFontMetrics fontMetrics{font};
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QRect titleRect(rect.topLeft() + QPoint(0, fontMetrics.ascent() - fontMetrics.height()), QSize(rect.width(), fontMetrics.height()));
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// On the top, aligned to the left after the icon
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painter->drawText(titleRect, title, QTextOption(Qt::AlignTop));
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painter->restore();
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// Change the rect again so it takes up the space below the title text
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rect.setTop(titleRect.bottom());
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}
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{ // Description painting
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auto description = index.data(UserDataTypes::DESCRIPTION).toString();
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QTextLayout text_layout(description, opt.font);
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qreal height = 0;
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auto cut_text = viewItemTextLayout(text_layout, rect.size(), height);
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description = cut_text.join("\n");
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QRect descriptionRect = rect;
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painter->drawText(descriptionRect, Qt::TextWordWrap, description);
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}
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painter->restore();
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}
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QSize ProjectItemDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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int height = 0;
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// 2px spacing between top and title
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height += 2;
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{ // Ensure enough space for one line with the title font
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auto font = option.font;
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if (index.data(UserDataTypes::SELECTED).toBool()) {
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font.setBold(true);
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font.setUnderline(true);
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}
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font.setPointSize(font.pointSize() + 2);
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// Ensure enough space for the title
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height += QFontMetrics{ font }.height();
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}
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{ // Ensure enough space for 2 lines of description text
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height += QFontMetrics{ option.font }.lineSpacing() * 2;
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}
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QSize indexSizeHint = index.data(Qt::SizeHintRole).toSize();
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if (indexSizeHint.isValid()) {
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return QSize(indexSizeHint.width(), std::max(indexSizeHint.height(), height));
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}
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return QSize(0, height);
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}
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