editors/sc-ide/widgets/util/icon_list_widget.hpp

   1 /*
   2     SuperCollider Qt IDE
   3     Copyright (c) 2012 Jakob Leben & Tim Blechmann
   4     http://www.audiosynth.com
   5
   6     This program is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     This program is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program; if not, write to the Free Software
  18     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
  19 */
  20
  21 #ifndef SCIDE_WIDGETS_UTIL_ICON_LIST_WIDGET_HPP_INCLUDED
  22 #define SCIDE_WIDGETS_UTIL_ICON_LIST_WIDGET_HPP_INCLUDED
  23
  24 #include <QListWidget>
  25 #include <QStyledItemDelegate>
  26 #include <QPainter>
  27
  28 namespace ScIDE {
  29
  30 class IconListWidget : public QListWidget
  31 {
  32 public:
  33     class ItemDelegate : public QStyledItemDelegate
  34     {
  35     public:
  36         ItemDelegate(QObject *parent) : QStyledItemDelegate(parent) {}
  37
  38         virtual QSize sizeHint
  39             ( const QStyleOptionViewItem & opt, const QModelIndex & index ) const
  40         {
  41             return QStyledItemDelegate::sizeHint(opt, index) + QSize(0, 10);
  42         }
  43
  44         virtual void paint
  45             ( QPainter * painter, const QStyleOptionViewItem & option,
  46               const QModelIndex & index ) const
  47         {
  48             painter->save();
  49
  50             QStyle *style = QApplication::style();
  51
  52             style->drawPrimitive( QStyle::PE_PanelItemViewItem, &option, painter );
  53
  54             QRect r( option.rect.adjusted(0,5,0,-5) );
  55
  56             QIcon icon(index.data(Qt::DecorationRole).value<QIcon>());
  57             if( !icon.isNull() )
  58                 style->drawItemPixmap( painter, r, Qt::AlignTop | Qt::AlignHCenter, icon.pixmap(option.decorationSize) );
  59
  60             QString text = index.data(Qt::DisplayRole).toString();
  61             if( !text.isEmpty() ) {
  62                 int alignment = !icon.isNull() ? Qt::AlignBottom | Qt::AlignHCenter : Qt::AlignCenter;
  63                 painter->setFont( option.font );
  64                 style->drawItemText( painter, r, alignment, option.palette, true, text );
  65             }
  66
  67             painter->restore();
  68         }
  69     };
  70
  71 public:
  72     IconListWidget(QWidget *parent = 0) : QListWidget(parent)
  73     {
  74         setItemDelegate( new ItemDelegate(this) );
  75     }
  76
  77     virtual QStyleOptionViewItem viewOptions() const
  78     {
  79         QStyleOptionViewItem opt( QListWidget::viewOptions() );
  80         opt.displayAlignment = Qt::AlignCenter;
  81         opt.decorationAlignment = Qt::AlignCenter;
  82         opt.decorationPosition = QStyleOptionViewItem::Top;
  83         opt.font.setBold(true);
  84         return opt;
  85     }
  86 };
  87
  88 } // namespace ScIDE
  89
  90 #endif // SCIDE_WIDGETS_UTIL_ICON_LIST_WIDGET_HPP_INCLUDED