125 lines
4.4 KiB
C++
125 lines
4.4 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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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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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 funther painting is easier
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auto remaining_width = rect.width() - icon_width - 2 * icon_x_margin;
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rect.setRect(rect.x() + icon_width + 2 * icon_x_margin, rect.y(), remaining_width, rect.height());
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int title_height = 0;
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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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title_height = QFontMetrics(font).height();
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// On the top, aligned to the left after the icon
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painter->drawText(rect.x(), rect.y() + title_height, title);
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painter->restore();
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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, remaining_width, height);
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// Get first line unconditionally
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description = cut_text.first().second;
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auto num_lines = 1;
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// Get second line, elided if needed
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if (cut_text.size() > 1) {
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// 2.5x so because there should be some margin left from the 2x so things don't get too squishy.
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if (rect.height() - title_height <= 2.5 * opt.fontMetrics.height()) {
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// If there's not enough space, show only a single line, elided.
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description = opt.fontMetrics.elidedText(description, opt.textElideMode, cut_text.at(0).first);
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} else {
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if (cut_text.size() > 2) {
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description += opt.fontMetrics.elidedText(cut_text.at(1).second, opt.textElideMode, cut_text.at(1).first);
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} else {
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description += cut_text.at(1).second;
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}
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num_lines += 1;
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}
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}
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int description_x = rect.x();
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// Have the y-value be set based on the number of lines in the description, to centralize the
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// description text with the space between the base and the title.
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int description_y = rect.y() + title_height + (rect.height() - title_height) / 2;
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if (num_lines == 1)
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description_y -= opt.fontMetrics.height() / 2;
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else
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description_y -= opt.fontMetrics.height();
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// On the bottom, aligned to the left after the icon, and featuring at most two lines of text (with some margin space to spare)
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painter->drawText(description_x, description_y, remaining_width,
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cut_text.size() * opt.fontMetrics.height(), Qt::TextWordWrap, description);
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}
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painter->restore();
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}
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