265 lines
9.2 KiB
C++
265 lines
9.2 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011-2012 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "playqueueview.h"
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#include "playqueuemodel.h"
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#include <QtGui/QStyledItemDelegate>
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#include <QtGui/QApplication>
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#include <QtGui/QFontMetrics>
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#include <QtGui/QPainter>
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#include <QtGui/QLinearGradient>
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#ifdef ENABLE_KDE_SUPPORT
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#include <KDE/KLocale>
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#endif
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static const int constIconSize=16;
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static const int constBorder=1;
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class PlayQueueDelegate : public QStyledItemDelegate
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{
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public:
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enum Type {
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AlbumHeader,
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AlbumTrack
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// SingleTrack
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};
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PlayQueueDelegate(QObject *p)
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: QStyledItemDelegate(p)
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{
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}
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virtual ~PlayQueueDelegate()
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{
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}
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Type getType(const QModelIndex &index) const
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{
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QModelIndex prev=index.row()>0 ? index.sibling(index.row()-1, 0) : QModelIndex();
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unsigned long thisKey=index.data(PlayQueueView::Role_Key).toUInt();
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unsigned long prevKey=prev.isValid() ? prev.data(PlayQueueView::Role_Key).toUInt() : 0xFFFFFFFF;
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if (thisKey==prevKey) {
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// Album Track
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return AlbumTrack;
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}
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// QModelIndex next=index.sibling(index.row()+1, 0);
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// unsigned long nextKey=next.isValid() ? next.data(PlayQueueView::Role_Key).toUInt() : 0xFFFFFFFF;
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// if (thisKey==nextKey) {
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// Album header...
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return AlbumHeader;
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// }
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// Single track
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// return SingleTrack;
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}
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QSize sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QSize sz=QStyledItemDelegate::sizeHint(option, index);
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if (0==index.column()) {
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int textHeight = QApplication::fontMetrics().height();
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if (AlbumHeader==getType(index)) {
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return QSize(sz.width(), (textHeight*2)+(3*constBorder));
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}
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return QSize(sz.width(), qMax(constIconSize, textHeight)+(2*constBorder));
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}
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return sz;
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}
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inline QString formatNumber(int num) const
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{
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QString text=QString::number(num);
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return num<10 ? "0"+text : text;
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}
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void drawFadedLine(QPainter *p, const QRect &r, const QColor &col) const
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{
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QPoint start(r.x(), r.y());
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QPoint end(r.x()+r.width()-1, r.y());
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QLinearGradient grad(start, end);
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QColor c(col);
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c.setAlphaF(0.45);
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QColor fade(c);
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const int fadeSize=64;
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double fadePos=1.0-((r.width()-fadeSize)/(r.width()*1.0));
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bool rtl=Qt::RightToLeft==QApplication::layoutDirection();
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fade.setAlphaF(0.0);
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grad.setColorAt(0, rtl ? fade : c);
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if(fadePos>=0 && fadePos<=1.0) {
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if (rtl) {
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grad.setColorAt(fadePos, c);
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} else {
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grad.setColorAt(1.0-fadePos, c);
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}
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}
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grad.setColorAt(1, rtl ? c : fade);
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p->save();
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p->setPen(QPen(QBrush(grad), 1));
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p->drawLine(start, end);
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p->restore();
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}
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void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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if (!index.isValid()) {
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return;
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}
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Type type=getType(index);
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QFont f(QApplication::font());
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QFontMetrics fm(f);
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int textHeight=fm.height();
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if (AlbumHeader==type) {
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QStyleOptionViewItem opt(option);
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painter->save();
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painter->setOpacity(0.75);
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QApplication::style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, 0L);
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painter->restore();
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painter->save();
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painter->setClipRect(option.rect.adjusted(0, textHeight+constBorder, 0, 0), Qt::IntersectClip);
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QApplication::style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, 0L);
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painter->restore();
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} else {
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QApplication::style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &option, painter, 0L);
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}
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QString title;
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QString track;
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int indent=0;
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switch(type) {
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case AlbumHeader:
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#ifdef ENABLE_KDE_SUPPORT
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title=i18nc("Album by AlbumArtist", "%1 by %2", index.data(PlayQueueView::Role_Album).toString(),
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index.data(PlayQueueView::Role_AlbumArtist).toString());
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track=i18nc("TrackNum TrackTitle", "%1 %2", formatNumber(index.data(PlayQueueView::Role_Track).toInt()),
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index.data(PlayQueueView::Role_Title).toString());
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#else
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title=tr("Album by AlbumArtist", "%1 by %2").arg(index.data(PlayQueueView::Role_Album).toString())
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.arg(index.data(PlayQueueView::Role_AlbumArtist).toString());
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track=tr("TrackNum TrackTitle", "%1 %2").arg(formatNumber(index.data(PlayQueueView::Role_Track).toInt()))
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.arg(index.data(PlayQueueView::Role_Title).toString());
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#endif
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indent=16;
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break;
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case AlbumTrack:
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#ifdef ENABLE_KDE_SUPPORT
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track=i18nc("TrackNum TrackTitle", "%1 %2", formatNumber(index.data(PlayQueueView::Role_Track).toInt()),
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index.data(PlayQueueView::Role_Title).toString());
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#else
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track=tr("TrackNum TrackTitle", "%1 %2").arg(formatNumber(index.data(PlayQueueView::Role_Track).toInt()))
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.arg(index.data(PlayQueueView::Role_Title).toString());
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#endif
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indent=16;
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break;
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// case SingleTrack:
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// #ifdef ENABLE_KDE_SUPPORT
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// track=i18nc("TrackNum TrackTitle, from Album by Artist", "%1 %2, from %3 by %4",
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// formatNumber(index.data(PlayQueueView::Role_Track).toInt()),
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// index.data(PlayQueueView::Role_Title).toString(),
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// index.data(PlayQueueView::Role_Album).toString(),
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// index.data(PlayQueueView::Role_Artist).toString());
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// #else
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// track=tr("TrackNum TrackTitle, from Album by Artist", "%1 %2, from %3 by %4")
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// .arg(formatNumber(index.data(PlayQueueView::Role_Track).toInt()))
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// .arg(index.data(PlayQueueView::Role_Title).toString())
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// .arg(index.data(PlayQueueView::Role_Album).toString())
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// .arg(index.data(PlayQueueView::Role_Artist).toString());
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// #endif
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// break;
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}
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painter->save();
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if (AlbumTrack==type) {
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f.setItalic(true);
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}
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painter->setFont(f);
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QColor col(QApplication::palette().color(option.state&QStyle::State_Selected ? QPalette::HighlightedText : QPalette::Text));
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painter->setPen(col);
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QTextOption textOpt(Qt::AlignVCenter);
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QRect r(option.rect.adjusted(constBorder+4, constBorder, -(constBorder+4), -constBorder));
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if (!title.isEmpty()) {
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QRect textRect(r.x(), r.y(), r.width(), textHeight);
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title = fm.elidedText(title, Qt::ElideRight, textRect.width(), QPalette::WindowText);
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painter->drawText(textRect, title, textOpt);
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r.adjust(0, textHeight+constBorder, 0, -(textHeight+constBorder));
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drawFadedLine(painter, r, col);
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f.setItalic(true);
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painter->setFont(f);
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}
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QRect textRect(r.x()+indent, r.y(), r.width()-indent, textHeight);
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track = fm.elidedText(track, Qt::ElideRight, textRect.width(), QPalette::WindowText);
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painter->drawText(textRect, track, textOpt);
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painter->restore();
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}
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};
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PlayQueueView::PlayQueueView(QWidget *parent)
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: TreeView(parent)
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, grouped(true)
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, prev(0)
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, custom(0)
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{
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setContextMenuPolicy(Qt::CustomContextMenu);
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setAcceptDrops(true);
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setDragEnabled(true);
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setDragDropOverwriteMode(false);
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setDragDropMode(QAbstractItemView::DragDrop);
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setSelectionMode(QAbstractItemView::ExtendedSelection);
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setIndentation(0);
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setItemsExpandable(false);
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setExpandsOnDoubleClick(false);
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setGrouped(false);
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}
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PlayQueueView::~PlayQueueView()
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{
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}
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void PlayQueueView::setGrouped(bool g)
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{
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if (g==grouped) {
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return;
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}
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grouped=g;
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if (grouped) {
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if (!custom) {
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custom=new PlayQueueDelegate(this);
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}
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if (!prev) {
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prev=itemDelegate();
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}
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setItemDelegate(custom);
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} else if (prev) {
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setItemDelegate(prev);
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}
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setHeaderHidden(grouped);
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setUniformRowHeights(!grouped);
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}
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