129 lines
4.2 KiB
C++
129 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 <QApplication>
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#include <QStyle>
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#include <QStylePainter>
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#include "FilterBarComboBox.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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FilterBarComboBox::FilterBarComboBox(QWidget* parent) :
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QComboBox(parent)
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{
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setSizeAdjustPolicy(QComboBox::AdjustToContents);
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}
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QSize FilterBarComboBox::minimumSizeHint() const
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{
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QFontMetrics fm(fontMetrics());
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QSize const textSize = fm.boundingRect(itemText(0)).size();
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QSize const countSize = fm.boundingRect(itemData(0, CountStringRole).toString()).size();
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return calculateSize(textSize, countSize);
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}
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QSize FilterBarComboBox::sizeHint() const
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{
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QFontMetrics fm(fontMetrics());
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QSize maxTextSize(0, 0);
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QSize maxCountSize(0, 0);
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for (int i = 0, n = count(); i < n; ++i)
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{
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QSize const textSize = fm.boundingRect(itemText(i)).size();
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maxTextSize.setHeight(qMax(maxTextSize.height(), textSize.height()));
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maxTextSize.setWidth(qMax(maxTextSize.width(), textSize.width()));
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QSize const countSize = fm.boundingRect(itemData(i, CountStringRole).toString()).size();
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maxCountSize.setHeight(qMax(maxCountSize.height(), countSize.height()));
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maxCountSize.setWidth(qMax(maxCountSize.width(), countSize.width()));
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}
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return calculateSize(maxTextSize, maxCountSize);
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}
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QSize FilterBarComboBox::calculateSize(QSize const& textSize, QSize const& countSize) const
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{
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int const hmargin = getHSpacing(this);
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QStyleOptionComboBox option;
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initStyleOption(&option);
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QSize contentSize = iconSize() + QSize(4, 2);
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contentSize.setHeight(qMax(contentSize.height(), textSize.height()));
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contentSize.rwidth() += hmargin + textSize.width();
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contentSize.rwidth() += hmargin + countSize.width();
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return style()->sizeFromContents(QStyle::CT_ComboBox, &option, contentSize, this).expandedTo(qApp->globalStrut());
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}
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void FilterBarComboBox::paintEvent(QPaintEvent* e)
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{
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Q_UNUSED(e)
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QStylePainter painter(this);
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painter.setPen(palette().color(QPalette::Text));
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// draw the combobox frame, focusrect and selected etc.
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QStyleOptionComboBox opt;
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initStyleOption(&opt);
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painter.drawComplexControl(QStyle::CC_ComboBox, opt);
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// draw the icon and text
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QModelIndex const modelIndex = model()->index(currentIndex(), 0, rootModelIndex());
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if (modelIndex.isValid())
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{
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QStyle* s = style();
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int const hmargin = getHSpacing(this);
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QRect rect = s->subControlRect(QStyle::CC_ComboBox, &opt, QStyle::SC_ComboBoxEditField, this);
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rect.adjust(2, 1, -2, -1);
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// draw the icon
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QIcon const icon = Utils::getIconFromIndex(modelIndex);
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if (!icon.isNull())
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{
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QRect const iconRect = QStyle::alignedRect(opt.direction, Qt::AlignLeft | Qt::AlignVCenter, opt.iconSize, rect);
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icon.paint(&painter, iconRect, Qt::AlignCenter, StyleHelper::getIconMode(opt.state), QIcon::Off);
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Utils::narrowRect(rect, iconRect.width() + hmargin, 0, opt.direction);
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}
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// draw the count
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QString text = modelIndex.data(CountStringRole).toString();
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if (!text.isEmpty())
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{
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QPen const pen = painter.pen();
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painter.setPen(Utils::getFadedColor(pen.color()));
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QRect const textRect = QStyle::alignedRect(opt.direction, Qt::AlignRight | Qt::AlignVCenter,
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QSize(opt.fontMetrics.boundingRect(text).width(), rect.height()), rect);
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painter.drawText(textRect, Qt::AlignRight | Qt::AlignVCenter, text);
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Utils::narrowRect(rect, 0, textRect.width() + hmargin, opt.direction);
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painter.setPen(pen);
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}
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// draw the text
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text = modelIndex.data(Qt::DisplayRole).toString();
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text = painter.fontMetrics().elidedText(text, Qt::ElideRight, rect.width());
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painter.drawText(rect, Qt::AlignLeft | Qt::AlignVCenter, text);
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}
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}
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