140 lines
3.1 KiB
C++
140 lines
3.1 KiB
C++
#include "Group.h"
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#include <QModelIndex>
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#include <QPainter>
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#include <QtMath>
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#include "GroupView.h"
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Group::Group(const QString &text, GroupView *view)
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: view(view), text(text), collapsed(false)
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{
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}
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Group::Group(const Group *other)
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: view(other->view), text(other->text), collapsed(other->collapsed),
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iconRect(other->iconRect), textRect(other->textRect)
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{
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}
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void Group::update()
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{
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firstRow = firstItem().row();
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rowHeights = QVector<int>(numRows());
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for (int i = 0; i < numRows(); ++i)
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{
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rowHeights[i] = view->categoryRowHeight(
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view->model()->index(i * view->itemsPerRow() + firstRow, 0));
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}
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}
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void Group::drawHeader(QPainter *painter, const int y)
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{
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painter->save();
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int height = headerHeight() - 4;
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int collapseSize = height;
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// the icon
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iconRect = QRect(view->m_rightMargin + 2, 2 + y, collapseSize, collapseSize);
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painter->setPen(QPen(Qt::black, 1));
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painter->drawRect(iconRect);
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static const int margin = 2;
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QRect iconSubrect = iconRect.adjusted(margin, margin, -margin, -margin);
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int midX = iconSubrect.center().x();
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int midY = iconSubrect.center().y();
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if (collapsed)
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{
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painter->drawLine(midX, iconSubrect.top(), midX, iconSubrect.bottom());
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}
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painter->drawLine(iconSubrect.left(), midY, iconSubrect.right(), midY);
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// the text
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int textWidth = painter->fontMetrics().width(text);
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textRect = QRect(iconRect.right() + 4, y, textWidth, headerHeight());
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painter->setBrush(view->viewOptions().palette.text());
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view->style()->drawItemText(painter, textRect, Qt::AlignHCenter | Qt::AlignVCenter,
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view->viewport()->palette(), true, text);
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// the line
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painter->drawLine(textRect.right() + 4, y + headerHeight() / 2,
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view->contentWidth() - view->m_rightMargin, y + headerHeight() / 2);
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painter->restore();
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}
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int Group::totalHeight() const
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{
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return headerHeight() + 5 + contentHeight();
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}
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int Group::headerHeight() const
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{
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return view->viewport()->fontMetrics().height() + 4;
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}
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int Group::contentHeight() const
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{
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if (collapsed)
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{
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return 0;
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}
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int result = 0;
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for (int i = 0; i < rowHeights.size(); ++i)
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{
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result += rowHeights[i];
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}
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return result;
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}
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int Group::numRows() const
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{
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return qMax(1, qCeil((qreal)numItems() / (qreal)view->itemsPerRow()));
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}
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int Group::top() const
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{
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int res = 0;
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const QList<Group *> cats = view->m_categories;
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for (int i = 0; i < cats.size(); ++i)
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{
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if (cats.at(i) == this)
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{
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break;
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}
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res += cats.at(i)->totalHeight() + view->m_categoryMargin;
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}
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return res;
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}
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QList<QModelIndex> Group::items() const
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{
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QList<QModelIndex> indices;
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for (int i = 0; i < view->model()->rowCount(); ++i)
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{
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const QModelIndex index = view->model()->index(i, 0);
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if (index.data(CategorizedViewRoles::CategoryRole).toString() == text)
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{
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indices.append(index);
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}
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}
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return indices;
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}
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int Group::numItems() const
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{
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return items().size();
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}
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QModelIndex Group::firstItem() const
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{
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QList<QModelIndex> indices = items();
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return indices.isEmpty() ? QModelIndex() : indices.first();
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}
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QModelIndex Group::lastItem() const
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{
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QList<QModelIndex> indices = items();
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return indices.isEmpty() ? QModelIndex() : indices.last();
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}
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