120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
/*
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* This file Copyright (C) 2012-2015 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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*/
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#include <QAbstractItemView>
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#include <QComboBox>
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#include <QStandardItemModel>
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#include <QStyle>
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#include "FilterBarComboBox.h"
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#include "FilterBarComboBoxDelegate.h"
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#include "StyleHelper.h"
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#include "Utils.h"
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namespace
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{
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int getHSpacing(QWidget const* w)
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{
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return qMax(3, w->style()->pixelMetric(QStyle::PM_LayoutHorizontalSpacing, nullptr, w));
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}
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} // namespace
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FilterBarComboBoxDelegate::FilterBarComboBoxDelegate(QObject* parent, QComboBox* combo) :
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QItemDelegate(parent),
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myCombo(combo)
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{
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}
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bool FilterBarComboBoxDelegate::isSeparator(QModelIndex const& index)
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{
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return index.data(Qt::AccessibleDescriptionRole).toString() == QLatin1String("separator");
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}
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void FilterBarComboBoxDelegate::setSeparator(QAbstractItemModel* model, QModelIndex const& index)
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{
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model->setData(index, QString::fromLatin1("separator"), Qt::AccessibleDescriptionRole);
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if (auto* m = qobject_cast<QStandardItemModel*>(model))
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{
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if (QStandardItem* item = m->itemFromIndex(index))
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{
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item->setFlags(item->flags() & ~(Qt::ItemIsSelectable | Qt::ItemIsEnabled));
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}
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}
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}
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void FilterBarComboBoxDelegate::paint(QPainter* painter, QStyleOptionViewItem const& option, QModelIndex const& index) const
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{
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if (isSeparator(index))
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{
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QRect rect = option.rect;
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if (auto const* view = qobject_cast<QAbstractItemView const*>(option.widget))
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{
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rect.setWidth(view->viewport()->width());
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}
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QStyleOption opt;
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opt.rect = rect;
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myCombo->style()->drawPrimitive(QStyle::PE_IndicatorToolBarSeparator, &opt, painter, myCombo);
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}
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else
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{
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QStyleOptionViewItem disabledOption = option;
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QPalette::ColorRole const disabledColorRole = (disabledOption.state & QStyle::State_Selected) != 0 ?
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QPalette::HighlightedText : QPalette::Text;
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disabledOption.palette.setColor(disabledColorRole, Utils::getFadedColor(disabledOption.palette.color(
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disabledColorRole)));
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QRect boundingBox = option.rect;
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int const hmargin = getHSpacing(myCombo);
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boundingBox.adjust(hmargin, 0, -hmargin, 0);
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QRect decorationRect = rect(option, index, Qt::DecorationRole);
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decorationRect.setSize(myCombo->iconSize());
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decorationRect = QStyle::alignedRect(option.direction, Qt::AlignLeft | Qt::AlignVCenter, decorationRect.size(),
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boundingBox);
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Utils::narrowRect(boundingBox, decorationRect.width() + hmargin, 0, option.direction);
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QRect countRect = rect(option, index, FilterBarComboBox::CountStringRole);
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countRect = QStyle::alignedRect(option.direction, Qt::AlignRight | Qt::AlignVCenter, countRect.size(), boundingBox);
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Utils::narrowRect(boundingBox, 0, countRect.width() + hmargin, option.direction);
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QRect const displayRect = boundingBox;
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QIcon const icon = Utils::getIconFromIndex(index);
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drawBackground(painter, option, index);
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icon.paint(painter, decorationRect, Qt::AlignCenter, StyleHelper::getIconMode(option.state), QIcon::Off);
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drawDisplay(painter, option, displayRect, index.data(Qt::DisplayRole).toString());
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drawDisplay(painter, disabledOption, countRect, index.data(FilterBarComboBox::CountStringRole).toString());
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drawFocus(painter, option, displayRect | countRect);
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}
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}
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QSize FilterBarComboBoxDelegate::sizeHint(QStyleOptionViewItem const& option, QModelIndex const& index) const
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{
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if (isSeparator(index))
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{
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int const pm = myCombo->style()->pixelMetric(QStyle::PM_DefaultFrameWidth, nullptr, myCombo);
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return QSize(pm, pm + 10);
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}
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QStyle* s = myCombo->style();
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int const hmargin = getHSpacing(myCombo);
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QSize size = QItemDelegate::sizeHint(option, index);
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size.setHeight(qMax(size.height(), myCombo->iconSize().height() + 6));
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size.rwidth() += s->pixelMetric(QStyle::PM_FocusFrameHMargin, nullptr, myCombo);
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size.rwidth() += rect(option, index, FilterBarComboBox::CountStringRole).width();
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size.rwidth() += hmargin * 4;
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return size;
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}
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