122 lines
4.6 KiB
C++
122 lines
4.6 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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* $Id$
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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 "Utils.h"
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namespace
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{
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int
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getHSpacing (const QWidget * w)
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{
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return qMax (3, w->style ()->pixelMetric (QStyle::PM_LayoutHorizontalSpacing, 0, w));
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}
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}
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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
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FilterBarComboBoxDelegate::isSeparator (const QModelIndex& 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
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FilterBarComboBoxDelegate::setSeparator (QAbstractItemModel * model, const QModelIndex& index)
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{
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model->setData (index, QString::fromLatin1 ("separator"), Qt::AccessibleDescriptionRole);
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if (QStandardItemModel *m = qobject_cast<QStandardItemModel*> (model))
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if (QStandardItem *item = m->itemFromIndex (index))
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item->setFlags (item->flags () & ~ (Qt::ItemIsSelectable|Qt::ItemIsEnabled));
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}
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void
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FilterBarComboBoxDelegate::paint (QPainter * painter,
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const QStyleOptionViewItem & option,
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const QModelIndex & 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 (const QStyleOptionViewItemV3 *v3 = qstyleoption_cast<const QStyleOptionViewItemV3*> (&option))
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if (const QAbstractItemView *view = qobject_cast<const QAbstractItemView*> (v3->widget))
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rect.setWidth (view->viewport ()->width ());
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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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const QPalette::ColorRole disabledColorRole = (disabledOption.state & QStyle::State_Selected) ?
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QPalette::HighlightedText : QPalette::Text;
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disabledOption.palette.setColor (disabledColorRole, Utils::getFadedColor (disabledOption.palette.color (disabledColorRole)));
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QRect boundingBox = option.rect;
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const int 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,
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Qt::AlignLeft|Qt::AlignVCenter,
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decorationRect.size (), 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,
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Qt::AlignRight|Qt::AlignVCenter,
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countRect.size (), boundingBox);
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Utils::narrowRect (boundingBox, 0, countRect.width () + hmargin, option.direction);
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const QRect displayRect = boundingBox;
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drawBackground (painter, option, index);
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QStyleOptionViewItem option2 = option;
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option2.decorationSize = myCombo->iconSize ();
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drawDecoration (painter, option, decorationRect, decoration (option2,index.data (Qt::DecorationRole)));
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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
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FilterBarComboBoxDelegate::sizeHint (const QStyleOptionViewItem & option,
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const QModelIndex & index) const
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{
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if (isSeparator (index))
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{
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const int pm = myCombo->style ()->pixelMetric (QStyle::PM_DefaultFrameWidth, 0, myCombo);
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return QSize (pm, pm + 10);
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}
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else
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{
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QStyle * s = myCombo->style ();
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const int 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, 0, 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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}
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