/***************************************************************************
* Copyright (C) 2006-2011 by Ilya Kotov *
* forkotov02@hotmail.ru *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <QPixmap>
#include <QResizeEvent>
#include <QPainter>
#include <QFont>
#include <QFontMetrics>
#include <QSettings>
#include <QMenu>
#include <QUrl>
#include <QApplication>
#include <QHelpEvent>
#include <QTimer>
#include <qmmpui/playlistitem.h>
#include <qmmpui/playlistmodel.h>
#include <qmmpui/mediaplayer.h>
#include "listwidget.h"
#include "skin.h"
#include "popupwidget.h"
#include "playlist.h"
#define INVALID_ROW -1
ListWidget::ListWidget(QWidget *parent)
: QWidget(parent)
{
m_update = false;
m_skin = Skin::instance();
m_popupWidget = 0;
m_metrics = 0;
m_extra_metrics = 0;
loadColors();
m_menu = new QMenu(this);
m_scroll_direction = NONE;
m_prev_y = 0;
m_anchor_row = INVALID_ROW;
m_player = MediaPlayer::instance();
connect (m_player, SIGNAL(repeatableChanged(bool)), SLOT(updateList()));
m_first = 0;
m_rows = 0;
m_scroll = false;
m_select_on_release = false;
readSettings();
connect(m_skin, SIGNAL(skinChanged()), this, SLOT(updateSkin()));
setAcceptDrops(true);
setMouseTracking(true);
m_timer = new QTimer(this);
m_timer->setInterval(50);
connect(m_timer, SIGNAL(timeout()), SLOT(autoscroll()));
}
ListWidget::~ListWidget()
{
if(m_metrics)
delete m_metrics;
if(m_extra_metrics)
delete m_extra_metrics;
}
void ListWidget::readSettings()
{
QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
m_font.fromString(settings.value("PlayList/Font", QApplication::font().toString()).toString());
m_extra_font = m_font;
m_extra_font.setPointSize(m_font.pointSize() - 1);
m_show_protocol = settings.value ("PlayList/show_protocol", false).toBool();
m_show_number = settings.value ("PlayList/show_numbers", true).toBool();
m_align_numbres = settings.value ("PlayList/align_numbers", false).toBool();
m_show_anchor = settings.value("PlayList/show_anchor", false).toBool();
bool show_popup = settings.value("PlayList/show_popup", false).toBool();
if (m_update)
{
delete m_metrics;
delete m_extra_metrics;
m_metrics = new QFontMetrics(m_font);
m_extra_metrics = new QFontMetrics(m_extra_font);
m_rows = height() / (m_metrics->lineSpacing() + 2);
updateList();
if(m_popupWidget)
{
m_popupWidget->deleteLater();
m_popupWidget = 0;
}
}
else
{
m_update = true;
m_metrics = new QFontMetrics(m_font);
m_extra_metrics = new QFontMetrics(m_extra_font);
}
if(show_popup)
m_popupWidget = new PlayListPopup::PopupWidget(this);
}
void ListWidget::loadColors()
{
m_normal.setNamedColor(m_skin->getPLValue("normal"));
m_current.setNamedColor(m_skin->getPLValue("current"));
m_normal_bg.setNamedColor(m_skin->getPLValue("normalbg"));
m_selected_bg.setNamedColor(m_skin->getPLValue("selectedbg"));
}
void ListWidget::paintEvent(QPaintEvent *)
{
QPainter m_painter(this);
m_painter.setFont(m_font);
m_painter.setBrush(QBrush(m_normal_bg));
m_painter.drawRect(-1,-1,width()+1,height()+1);
int font_y = 0;
for (int i = 0; i < m_titles.size(); ++i )
{
if (m_show_anchor && i == m_anchor_row - m_first)
{
m_painter.setBrush(m_model->isSelected(i + m_first) ? m_selected_bg : m_normal_bg);
m_painter.setPen(m_normal);
m_painter.drawRect (6, i * (m_metrics->lineSpacing() + 2),
width() - 10, m_metrics->lineSpacing() + 1);
}
else
{
if (m_model->isSelected(i + m_first))
{
m_painter.setBrush(QBrush(m_selected_bg));
m_painter.setPen(m_selected_bg);
m_painter.drawRect (6, i * (m_metrics->lineSpacing() + 2),
width() - 10, m_metrics->lineSpacing() + 1);
}
}
if (m_model->currentRow() == i + m_first)
m_painter.setPen(m_current);
else
m_painter.setPen(m_normal); //243,58
font_y = (i + 1) * (2 + m_metrics->lineSpacing()) - 2 - m_metrics->descent();
if(m_number_width)
{
QString number = QString("%1").arg(m_first+i+1);
m_painter.drawText(10 + m_number_width - m_extra_metrics->width(number),
font_y, number);
m_painter.drawText(10 + m_number_width + m_metrics->width("9"), font_y, m_titles.at(i));
}
else
m_painter.drawText(10, font_y, m_titles.at(i));
QString extra_string = getExtraString(m_first + i);
if(!extra_string.isEmpty())
{
m_painter.setFont(m_extra_font);
if(m_times.at(i).isEmpty())
m_painter.drawText(width() - 7 - m_extra_metrics->width(extra_string),
font_y, extra_string);
else
m_painter.drawText(width() - 10 - m_extra_metrics->width(extra_string) -
m_metrics->width(m_times.at(i)), font_y, extra_string);
m_painter.setFont(m_font);
}
m_painter.drawText(width() - 7 - m_metrics->width(m_times.at(i)), font_y, m_times.at(i));
}
//draw line
if(m_number_width)
{
m_painter.setPen(m_normal);
m_painter.drawLine(10 + m_number_width + m_metrics->width("9") / 2, 2,
10 + m_number_width + m_metrics->width("9") / 2, font_y);
}
}
void ListWidget::mouseDoubleClickEvent (QMouseEvent *e)
{
int y = e->y();
int row = rowAt(y);
if (INVALID_ROW != row)
{
m_model->setCurrent(row);
emit selectionChanged();
update();
}
}
void ListWidget::mousePressEvent(QMouseEvent *e)
{
if(m_popupWidget)
m_popupWidget->hide();
m_scroll = true;
int y = e->y();
int row = rowAt(y);
if (INVALID_ROW != row && m_model->count() > row)
{
m_pressed_row = row;
if(e->button() == Qt::RightButton && !m_model->isSelected(row))
{
m_model->clearSelection();
m_model->setSelected(row, true);
m_anchor_row = m_pressed_row;
QWidget::mousePressEvent(e);
return;
}
if (m_model->isSelected(row) && (e->modifiers() == Qt::NoModifier))
{
m_select_on_release = true;
QWidget::mousePressEvent(e);
return;
}
if ((Qt::ShiftModifier & e->modifiers()))
{
bool select = true;
if (m_pressed_row > m_anchor_row)
{
for (int j = m_anchor_row;j <= m_pressed_row;j++)
{
m_model->setSelected(j, select);
}
}
else
{
for (int j = m_anchor_row;j >= m_pressed_row;j--)
{
m_model->setSelected(j, select);
}
}
m_anchor_row = m_pressed_row;
}
else //ShiftModifier released
{
if ((Qt::ControlModifier & e->modifiers()))
{
m_model->setSelected(row, !m_model->isSelected(row));
}
else //ControlModifier released
{
m_model->clearSelection();
m_model->setSelected(row, true);
}
m_anchor_row = m_pressed_row;
}
update();
}
QWidget::mousePressEvent(e);
}
void ListWidget::resizeEvent(QResizeEvent *e)
{
m_rows = e->size().height() / (m_metrics->lineSpacing() + 2);
m_scroll = true;
updateList();
QWidget::resizeEvent(e);
}
void ListWidget::wheelEvent (QWheelEvent *e)
{
if (m_model->count() <= m_rows)
return;
if ((m_first == 0 && e->delta() > 0) ||
((m_first == m_model->count() - m_rows) && e->delta() < 0))
return;
m_first -= e->delta()/40; //40*3 TODO: add step to config
if (m_first < 0)
m_first = 0;
if (m_first > m_model->count() - m_rows)
m_first = m_model->count() - m_rows;
m_scroll = false;
updateList();
}
bool ListWidget::event (QEvent *e)
{
if(m_popupWidget)
{
if(e->type() == QEvent::ToolTip)
{
QHelpEvent *helpEvent = (QHelpEvent *) e;
int row = rowAt(helpEvent->y());
if(row < 0)
{
m_popupWidget->deactivate();
return QWidget::event(e);
}
e->accept();
m_popupWidget->prepare(m_model->item(row), helpEvent->globalPos());
return true;
}
else if(e->type() == QEvent::Leave)
m_popupWidget->deactivate();
}
return QWidget::event(e);
}
void ListWidget::updateList()
{
if (m_model->count() < (m_rows+m_first+1) && m_rows< m_model->count())
{
m_first = m_model->count() - m_rows;
}
if (m_model->count() < m_rows + 1)
{
m_first = 0;
emit positionChanged(0,0);
}
else
emit positionChanged(m_first, m_model->count() - m_rows);
if (m_model->count() <= m_first)
{
m_first = 0;
emit positionChanged(0, qMax(0, m_model->count() - m_rows));
}
m_titles = m_model->getTitles(m_first, m_rows);
m_times = m_model->getTimes(m_first, m_rows);
m_scroll = false;
//add numbers
for (int i = 0; i < m_titles.size() && m_show_number && !m_align_numbres; ++i)
{
QString title = m_titles.at(i);
m_titles.replace(i, title.prepend(QString("%1").arg(m_first+i+1)+". "));
}
//song numbers width
if(m_show_number && m_align_numbres && m_model->count())
{
m_number_width = m_metrics->width("9") * QString::number(m_model->count()).size();
}
else
m_number_width = 0;
//elide title
QString extra_string;
for (int i=0; i<m_titles.size(); ++i)
{
extra_string = getExtraString(m_first + i);
int extra_string_space = extra_string.isEmpty() ? 0 : m_metrics->width(extra_string);
if(m_number_width)
extra_string_space += m_number_width + m_metrics->width("9");
m_titles.replace(i, m_metrics->elidedText (m_titles.at(i), Qt::ElideRight,
width() - m_metrics->width(m_times.at(i)) - 22 - extra_string_space));
}
update();
}
void ListWidget::autoscroll()
{
SimpleSelection sel = m_model->getSelection(m_pressed_row);
if ((sel.m_top == 0 && m_scroll_direction == TOP && sel.count() > 1) ||
(sel.m_bottom == m_model->count() - 1 && m_scroll_direction == DOWN && sel.count() > 1))
return;
if(m_scroll_direction == DOWN)
{
int row = m_first + m_rows;
(m_first + m_rows < m_model->count()) ? m_first ++ : m_first;
m_model->moveItems(m_pressed_row,row);
m_pressed_row = row;
}
else if(m_scroll_direction == TOP && m_first > 0)
{
m_first --;
m_model->moveItems(m_pressed_row, m_first);
m_pressed_row = m_first;
}
}
void ListWidget::setModel(PlayListModel *selected, PlayListModel *previous)
{
if(previous)
disconnect(previous, 0, this, 0); //disconnect previous model
qApp->processEvents();
m_model = selected;
m_first = 0;
m_scroll = false;
recenterCurrent();
updateList();
connect (m_model, SIGNAL(currentChanged()), SLOT(recenterCurrent()));
connect (m_model, SIGNAL(listChanged()), SLOT(updateList()));
}
void ListWidget::scroll(int sc)
{
if (m_model->count() <= m_rows)
return;
m_first = sc; //*(m_model->count() - m_rows)/99;
m_scroll = true;
updateList();
}
void ListWidget::updateSkin()
{
loadColors();
update();
}
void ListWidget::dragEnterEvent(QDragEnterEvent *event)
{
if (event->mimeData()->hasFormat("text/uri-list"))
event->acceptProposedAction();
}
void ListWidget::dropEvent(QDropEvent *event)
{
if (event->mimeData()->hasUrls())
{
QList<QUrl> list_urls = event->mimeData()->urls();
event->acceptProposedAction();
QApplication::restoreOverrideCursor();
foreach(QUrl u,list_urls)
{
QString add_string = u.toString(QUrl::RemoveScheme);
if (!add_string.isEmpty())
processFileInfo(QFileInfo(add_string));
}
}
}
void ListWidget::processFileInfo(const QFileInfo& info)
{
m_model->add(info.absoluteFilePath());
}
const QString ListWidget::getExtraString(int i)
{
QString extra_string;
if (m_show_protocol && m_model->item(i)->url().contains("://"))
extra_string = "[" + m_model->item(i)->url().split("://").at(0) + "]";
if (m_model->isQueued(m_model->item(i)))
{
int index = m_model->queuedIndex(m_model->item(i));
extra_string += "|"+QString::number(index + 1)+"|";
}
if(m_model->currentRow() == i && m_player->isRepeatable())
extra_string += "|R|";
else if(m_model->isStopAfter(m_model->item(i)))
extra_string += "|S|";
extra_string = extra_string.trimmed(); //remove white space
if(!extra_string.isEmpty())
extra_string.prepend(" ");
return extra_string;
}
void ListWidget::mouseMoveEvent(QMouseEvent *e)
{
if(e->buttons() == Qt::LeftButton)
{
m_scroll = true;
if (m_prev_y > e->y())
m_scroll_direction = TOP;
else if (m_prev_y < e->y())
m_scroll_direction = DOWN;
else
m_scroll_direction = NONE;
if(e->y() < 0 || e->y() > height())
{
if(!m_timer->isActive())
m_timer->start();
return;
}
m_timer->stop();
int row = rowAt(e->y());
if (INVALID_ROW != row)
{
SimpleSelection sel = m_model->getSelection(m_pressed_row);
if(sel.count() > 1 && m_scroll_direction == TOP)
{
if(sel.m_top == 0 || sel.m_top == m_first)
return;
}
else if(sel.count() > 1 && m_scroll_direction == DOWN)
{
if(sel.m_bottom == m_model->count() - 1 || sel.m_bottom == m_first + m_rows)
return;
}
m_model->moveItems(m_pressed_row,row);
m_prev_y = e->y();
m_scroll = false;
m_pressed_row = row;
m_anchor_row = row;
}
}
else if(m_popupWidget)
{
int row = rowAt(e->y());
if(row < 0 || m_popupWidget->item() != m_model->item(row))
m_popupWidget->deactivate();
}
}
void ListWidget::mouseReleaseEvent(QMouseEvent *e)
{
if (m_select_on_release)
{
m_model->clearSelection();
m_model->setSelected(m_pressed_row,true);
m_anchor_row = m_pressed_row;
m_select_on_release = false;
}
m_pressed_row = INVALID_ROW;
m_scroll_direction = NONE;
m_timer->stop();
m_scroll = false;
QWidget::mouseReleaseEvent(e);
}
int ListWidget::rowAt(int y) const
{
for (int i = 0; i < qMin(m_rows, m_model->count() - m_first); ++i)
{
if ((y >= i * (m_metrics->lineSpacing() + 2)) && (y <= (i+1) * (m_metrics->lineSpacing() + 2)))
return m_first + i;
}
return INVALID_ROW;
}
void ListWidget::contextMenuEvent(QContextMenuEvent * event)
{
if (menu())
menu()->exec(event->globalPos());
}
void ListWidget::recenterCurrent()
{
if (!m_scroll && m_rows)
{
if (m_first + m_rows < m_model->currentRow() + 1)
m_first = qMin(m_model->count() - m_rows,
m_model->currentRow() - m_rows/2);
else if (m_first > m_model->currentRow())
m_first = qMax (m_model->currentRow() - m_rows/2, 0);
}
}
