added qsui plugin

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@5367 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 768 insertions, 0 deletions

diff --git a/src/plugins/Ui/qsui/playlistheader.cpp b/src/plugins/Ui/qsui/playlistheader.cpp
new file mode 100644
index 000000000..a2bd5a1e5
--- /dev/null
+++ b/src/plugins/Ui/qsui/playlistheader.cpp
@@ -0,0 +1,768 @@
+/***************************************************************************
+ *   Copyright (C) 2015 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.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+ ***************************************************************************/
+
+#include <QPainter>
+#include <QBitmap>
+#include <QFont>
+#include <QFontMetrics>
+#include <QSettings>
+#include <QApplication>
+#include <QMouseEvent>
+#include <QContextMenuEvent>
+#include <QMenu>
+#include <QLineEdit>
+#include <QInputDialog>
+#include <QIcon>
+#include <QStyleOptionHeader>
+#include <qmmp/qmmp.h>
+#include <qmmpui/playlistmanager.h>
+#include <qmmpui/playlistheadermodel.h>
+#include <qmmpui/playlistmanager.h>
+#include "playlistheader.h"
+
+#define INITAL_SIZE 150
+#define MIN_SIZE 30
+#define MAX_COLUMNS 7
+
+PlayListHeader::PlayListHeader(QWidget *parent) :
+    QWidget(parent)
+{
+    setMouseTracking(true);
+
+    m_pl_padding = 0;
+    m_number_width = 0;
+    m_offset = 0;
+    m_sorting_column = -1;
+    m_scrollbar_width = 0;
+    m_reverted = false;
+    m_auto_resize = false;
+    m_metrics = 0;
+    m_task = NO_TASK;
+
+    m_model = PlayListManager::instance()->headerModel();
+    m_menu = new QMenu(this);
+    m_menu->addAction(QIcon::fromTheme("list-add"), tr("Add Column"), this, SLOT(addColumn()));
+    m_menu->addAction(QIcon::fromTheme("configure"), tr("Edit Column"), this, SLOT(editColumn()));
+    m_trackStateAction = m_menu->addAction(tr("Show Queue/Protocol"), this, SLOT(showTrackState(bool)));
+    m_trackStateAction->setCheckable(true);
+    m_autoResizeAction = m_menu->addAction(tr("Auto-resize"), this, SLOT(setAutoResize(bool)));
+    m_autoResizeAction->setCheckable(true);
+    m_menu->addSeparator();
+    m_menu->addAction(QIcon::fromTheme("list-remove"), tr("Remove Column"), this, SLOT(removeColumn()));
+
+    readSettings();
+
+    connect(m_model, SIGNAL(columnAdded(int)), SLOT(onColumnAdded(int)));
+    connect(m_model, SIGNAL(columnRemoved(int)), SLOT(onColumnRemoved()));
+    connect(m_model, SIGNAL(columnMoved(int,int)), SLOT(updateColumns()));
+    connect(m_model, SIGNAL(columnChanged(int)), SLOT(updateColumns()));
+}
+
+PlayListHeader::~PlayListHeader()
+{
+    if (m_metrics)
+        delete m_metrics;
+    m_metrics = 0;
+}
+
+void PlayListHeader::readSettings()
+{
+    if (m_metrics)
+    {
+        delete m_metrics;
+        m_metrics = 0;
+    }
+
+    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
+    settings.beginGroup("Simple");
+
+    QFont header_font = qApp->font("QAbstractItemView");
+    if(!settings.value("use_system_fonts", true).toBool())
+    {
+        header_font.fromString(settings.value("pl_header_font", header_font.toString()).toString());
+    }
+    m_metrics = new QFontMetrics(header_font);
+    setFont(header_font);
+
+    QStyleOptionHeader opt;
+    opt.initFrom(this);
+    m_size_hint = style()->sizeFromContents(QStyle::CT_HeaderSection, &opt, QSize(), this);
+
+    QFont pl_font;
+    pl_font.fromString(settings.value("pl_font", qApp->font().toString()).toString());
+    m_pl_padding = QFontMetrics(pl_font).width("9")/2;
+
+    if(!m_model->isSettingsLoaded()) //do not load settings several times
+    {
+        m_model->restoreSettings(&settings);
+        QList<QVariant> sizes = settings.value("pl_column_sizes").toList();
+        int autoResizeColumn = settings.value("pl_autoresize_column", -1).toInt();
+        int trackStateColumn = settings.value("pl_track_state_column", -1).toInt();
+        for(int i = 0; i < m_model->count(); ++i)
+        {
+            m_model->setData(i, SIZE, INITAL_SIZE);
+
+            if(i < sizes.count())
+                m_model->setData(i, SIZE, sizes.at(i).toInt());
+            if(i == autoResizeColumn)
+            {
+                m_model->setData(i, AUTO_RESIZE, true);
+                m_auto_resize = true;
+            }
+            if(i == trackStateColumn)
+                m_model->setData(i,TRACK_STATE, true);
+        }
+    }
+    else
+    {
+        m_auto_resize = autoResizeColumn() >= 0;
+    }
+
+    if(isVisible())
+        updateColumns();
+
+    settings.endGroup();
+}
+
+void PlayListHeader::setNumberWidth(int width)
+{
+    if(width != m_number_width)
+    {
+        m_number_width = width;
+        if(m_model->count() == 1)
+            updateColumns();
+    }
+}
+
+void PlayListHeader::setScrollBarWidth(int width)
+{
+    if(!isVisible())
+        return;
+
+    if(m_scrollbar_width != width)
+    {
+        m_scrollbar_width = width;
+
+        if(m_model->count() == 1)
+        {
+            updateColumns();
+            return;
+        }
+
+        int index = autoResizeColumn();
+        if(index >= 0)
+        {
+            adjustColumn(index);
+            updateColumns();
+            return;
+        }
+    }
+}
+
+void PlayListHeader::updateColumns()
+{
+    if(!isVisible())
+        return;
+
+    bool rtl = (layoutDirection() == Qt::RightToLeft);
+
+    int sx = 5;
+
+    if(m_model->count() == 1)
+    {
+        if(m_number_width)
+            sx += m_number_width + 2 * m_pl_padding;
+        m_model->setData(0, RECT, rtl ? QRect(5 + m_scrollbar_width, 0, width() - sx - 5 - m_scrollbar_width, height()) :
+                                        QRect(sx, 0, width() - sx - 5 - m_scrollbar_width, height()));
+        m_model->setData(0, NAME, m_model->name(0));
+        update();
+        return;
+    }
+
+    for(int i = 0; i < m_model->count(); ++i)
+    {
+        int size = m_model->data(i, SIZE).toInt();
+
+        if(rtl)
+            m_model->setData(i, RECT, QRect(width() - sx - size, 0, size, height()));
+        else
+            m_model->setData(i, RECT, QRect(sx, 0, size, height()));
+        m_model->setData(i, NAME, m_model->name(i));
+        sx += size;
+    }
+    update();
+}
+
+int PlayListHeader::requiredHeight() const
+{
+    return m_size_hint.height();
+}
+
+QList<int> PlayListHeader::sizes() const
+{
+    QList<int> sizeList;
+    for(int i = 0; i < m_model->count(); ++i)
+        sizeList.append(m_model->data(i, SIZE).toInt());
+    return sizeList;
+}
+
+int PlayListHeader::trackStateColumn() const
+{
+    for(int i = 0; i < m_model->count(); ++i)
+    {
+        if(m_model->data(i, TRACK_STATE).toBool())
+        {
+            return i;
+        }
+    }
+    return -1;
+}
+
+int PlayListHeader::maxScrollValue() const
+{
+    if(m_model->count() == 1)
+        return 0;
+
+    int row_width = 0;
+    foreach (int size, sizes())
+    {
+        row_width += size;
+    }
+    return qMax(0, row_width - width() + m_scrollbar_width + 10);
+}
+
+int PlayListHeader::offset() const
+{
+    return m_offset;
+}
+
+bool PlayListHeader::hasAutoResizeColumn() const
+{
+    return m_auto_resize;
+}
+
+void PlayListHeader::scroll(int offset)
+{
+    m_offset = offset;
+    update();
+}
+
+void PlayListHeader::showSortIndicator(int column, bool reverted)
+{
+    if(m_sorting_column == column && m_reverted == reverted)
+        return;
+
+    m_sorting_column = column;
+    m_reverted = reverted;
+    updateColumns();
+}
+
+void PlayListHeader::hideSortIndicator()
+{
+    if(m_sorting_column != -1)
+    {
+        m_sorting_column = -1;
+        updateColumns();
+    }
+}
+
+void PlayListHeader::addColumn()
+{
+    int column = findColumn(m_pressed_pos);
+
+    if(column < 0)
+    {
+        QRect firstRect = m_model->data(0, RECT).toRect();
+        QRect lastRect = m_model->data(m_model->count() - 1, RECT).toRect();
+
+        if(m_pressed_pos.x() > lastRect.right())
+            column = m_model->count();
+        else if(m_pressed_pos.x() < firstRect.x())
+            column = 0;
+    }
+
+    if(column < 0)
+        return;
+
+    m_model->execInsert(column);
+}
+
+void PlayListHeader::editColumn()
+{
+    if(m_pressed_column < 0)
+         return;
+
+    m_model->execEdit(m_pressed_column);
+}
+
+void PlayListHeader::removeColumn()
+{
+    if(m_pressed_column < 0)
+         return;
+
+    m_model->remove(m_pressed_column);
+}
+
+void PlayListHeader::setAutoResize(bool on)
+{
+    if(m_pressed_column < 0)
+        return;
+
+    m_auto_resize = on;
+
+    if(on)
+    {
+        for(int i = 0; i < m_model->count(); ++i)
+            m_model->setData(i, AUTO_RESIZE, false);
+    }
+
+    m_model->setData(m_pressed_column, AUTO_RESIZE, on);
+
+    if(on)
+    {
+        m_offset = 0;
+        adjustColumn(m_pressed_column);
+        updateColumns();
+    }
+    PlayListManager::instance()->selectedPlayList()->updateMetaData();
+}
+
+void PlayListHeader::showTrackState(bool yes)
+{
+    if(m_pressed_column < 0)
+        return;
+
+    if(yes)
+    {
+        for(int i = 0; i < m_model->count(); ++i)
+            m_model->setData(i, TRACK_STATE, false);
+    }
+
+    m_model->setData(m_pressed_column, TRACK_STATE, yes);
+    PlayListManager::instance()->selectedPlayList()->updateMetaData();
+}
+
+void PlayListHeader::onColumnAdded(int index)
+{
+    m_model->setData(index, SIZE, INITAL_SIZE);
+    if(m_auto_resize && isVisible())
+    {
+        adjustColumn(autoResizeColumn());
+    }
+    updateColumns();
+}
+
+void PlayListHeader::onColumnRemoved()
+{
+    m_auto_resize = autoResizeColumn() >= 0;
+    if(m_auto_resize && isVisible())
+    {
+        adjustColumn(autoResizeColumn());
+    }
+    updateColumns();
+}
+
+void PlayListHeader::mousePressEvent(QMouseEvent *e)
+{
+    bool rtl = layoutDirection() == Qt::RightToLeft;
+
+    if(e->button() == Qt::LeftButton)
+    {
+        m_pressed_column = findColumn(e->pos());
+        if(m_pressed_column >= 0)
+        {
+            m_pressed_pos = e->pos();
+            m_mouse_pos = e->pos();
+            m_pressed_pos.rx() += m_offset;
+            m_mouse_pos.rx() += m_offset;
+
+            if(rtl)
+            {
+                if(e->pos().x() < m_model->data(m_pressed_column, RECT).toRect().x() + m_metrics->width("9"))
+                {
+                    m_old_size = size(m_pressed_column);
+                    m_task = RESIZE;
+                }
+                else
+                {
+                    m_press_offset = e->pos().x() - m_model->data(m_pressed_column, RECT).toRect().x();
+                    m_task = SORT;
+                }
+            }
+            else
+            {
+                if(e->pos().x() > m_model->data(m_pressed_column, RECT).toRect().right() - m_metrics->width("9"))
+                {
+                    m_old_size = size(m_pressed_column);
+                    m_task = RESIZE;
+                }
+                else
+                {
+                    m_press_offset = e->pos().x() - m_model->data(m_pressed_column, RECT).toRect().x();
+                    m_task = SORT;
+                }
+            }
+        }
+        else
+        {
+            m_task = NO_TASK;
+            update();
+        }
+    }
+}
+
+void PlayListHeader::mouseReleaseEvent(QMouseEvent *)
+{
+    if(m_task == SORT)
+        PlayListManager::instance()->selectedPlayList()->sortByColumn(m_pressed_column);
+
+    m_task = NO_TASK;
+    update();
+}
+
+void PlayListHeader::mouseMoveEvent(QMouseEvent *e)
+{
+    bool rtl = layoutDirection() == Qt::RightToLeft;
+
+    if(m_task == SORT)
+    {
+        m_task = MOVE;
+    }
+
+    int x = e->pos().x() + m_offset;
+
+    if(m_task == RESIZE && m_model->count() > 1)
+    {
+        int index = autoResizeColumn();
+
+        if(index == -1 || m_pressed_column < m_model->count() - 1)
+        {
+            if(rtl)
+                setSize(m_pressed_column, m_old_size - x + m_pressed_pos.x());
+            else
+                setSize(m_pressed_column, m_old_size + x - m_pressed_pos.x());
+            setSize(m_pressed_column, qMax(size(m_pressed_column), MIN_SIZE));
+        }
+
+        if(m_pressed_column < index)
+        {
+            adjustColumn(index);
+        }
+        else if(index != -1 && m_pressed_column < m_model->count() - 1)
+        {
+            adjustColumn(m_pressed_column + 1);
+        }
+        m_offset = qMin(m_offset, maxScrollValue());
+        updateColumns();
+        PlayListManager::instance()->selectedPlayList()->updateMetaData();
+    }
+    else if(m_task == MOVE)
+    {
+        m_mouse_pos = e->pos();
+        m_mouse_pos.rx() += m_offset;
+
+        int dest = -1;
+        for(int i = 0; i < m_model->count(); ++i)
+        {
+            QRect rect = m_model->data(i, RECT).toRect();
+            int x_delta = m_mouse_pos.x() - rect.x();
+            if(x_delta < 0 || x_delta > rect.width())
+                continue;
+
+            if(rtl)
+            {
+                if((x_delta > rect.width()/2 && m_pressed_column > i) ||
+                        (x_delta < rect.width()/2 && m_pressed_column < i))
+                {
+                    dest = i;
+                    break;
+                }
+            }
+            else
+            {
+                if((x_delta > rect.width()/2 && m_pressed_column < i) ||
+                        (x_delta < rect.width()/2 && m_pressed_column > i))
+                {
+                    dest = i;
+                    break;
+                }
+            }
+        }
+        if(dest == -1 || dest == m_pressed_column)
+        {
+            update();
+            QWidget::mouseMoveEvent(e);
+            return;
+        }
+        m_model->move(m_pressed_column, dest);
+        m_pressed_column = dest;
+        update();
+    }
+    else if(e->button() == Qt::NoButton && m_model->count() > 1)
+    {
+        int column = findColumn(e->pos());
+
+        if(!m_auto_resize || column < m_model->count() - 1)
+        {
+            if(rtl)
+            {
+                if(column >= 0 && x < m_model->data(column, RECT).toRect().x() + m_metrics->width("9"))
+                    setCursor(Qt::SplitHCursor);
+                else
+                    setCursor(Qt::ArrowCursor);
+            }
+            else
+            {
+                if(column >= 0 && x > m_model->data(column, RECT).toRect().right() - m_metrics->width("9"))
+                    setCursor(Qt::SplitHCursor);
+                else
+                    setCursor(Qt::ArrowCursor);
+            }
+        }
+        else
+        {
+            setCursor(Qt::ArrowCursor);
+        }
+    }
+}
+
+void PlayListHeader::resizeEvent(QResizeEvent *e)
+{
+    if(m_model->count() == 1)
+    {
+        updateColumns();
+        return;
+    }
+
+    if(!isVisible())
+        return;
+
+    if(m_auto_resize)
+    {
+        adjustColumn(autoResizeColumn());
+        m_offset = qMin(m_offset, maxScrollValue());
+        updateColumns();
+        return;
+    }
+
+    if(m_offset > maxScrollValue())
+    {
+        m_offset = maxScrollValue();
+        updateColumns();
+        return;
+    }
+
+
+    if(layoutDirection() == Qt::RightToLeft || e->oldSize().height() != e->size().height())
+    {
+        updateColumns();
+        return;
+    }
+}
+
+void PlayListHeader::contextMenuEvent(QContextMenuEvent *e)
+{
+    m_pressed_pos = e->pos();
+    m_pressed_column = findColumn(e->pos());
+    if(m_pressed_column >= 0)
+    {
+        m_trackStateAction->setChecked(m_model->data(m_pressed_column, TRACK_STATE).toBool());
+        m_autoResizeAction->setChecked(m_model->data(m_pressed_column, AUTO_RESIZE).toBool());
+
+        //hide unused actions
+        foreach (QAction *action, m_menu->actions())
+        {
+            if(m_menu->actions().at(0) == action)
+                action->setVisible(m_model->count() < MAX_COLUMNS);
+            else if(m_menu->actions().at(1) == action)
+                action->setVisible(true);
+            else
+                action->setVisible(m_model->count() != 1); //multicolumn mode
+        }
+
+    }
+    else
+    {
+        foreach (QAction *action, m_menu->actions())
+        {
+            if(action == m_menu->actions().first())
+                action->setVisible(m_model->count() < MAX_COLUMNS);
+            else
+                action->setVisible(false);
+        }
+    }
+    m_menu->exec(e->globalPos());
+}
+
+void PlayListHeader::paintEvent(QPaintEvent *)
+{
+    bool rtl = (layoutDirection() == Qt::RightToLeft);
+
+    QPainter painter(this);
+    painter.translate(rtl ? m_offset : -m_offset, 0);
+
+    {
+        QStyleOption opt;
+        opt.initFrom(this);
+        opt.state |= QStyle::State_Horizontal;
+        opt.rect = QRect(0,0,m_model->data(0, RECT).toRect().x(), height());
+        style()->drawControl(QStyle::CE_HeaderEmptyArea, &opt, &painter, this);
+        opt.rect = QRect(m_model->data(m_model->count() - 1, RECT).toRect().right(), 0,
+                         width() - m_model->data(m_model->count() - 1, RECT).toRect().right(), height());
+        style()->drawControl(QStyle::CE_HeaderEmptyArea, &opt, &painter, this);
+    }
+
+    for(int i = 0; i < m_model->count(); ++i)
+    {
+        QStyleOptionHeader opt;
+        initStyleOption(&opt);
+        opt.rect = m_model->data(i, RECT).toRect();
+        opt.text = name(i);
+        opt.section = i;
+        opt.state |= QStyle::State_Active;
+        if(i == 0)
+            opt.position = QStyleOptionHeader::Beginning;
+        else if(i < m_model->count() - 1)
+            opt.position = QStyleOptionHeader::Middle;
+        else if(i == m_model->count() - 1)
+            opt.position = QStyleOptionHeader::End;
+
+        if(i == m_sorting_column)
+            opt.sortIndicator = m_reverted ? QStyleOptionHeader::SortUp : QStyleOptionHeader::SortDown;
+
+        style()->drawControl(QStyle::CE_Header, &opt, &painter, this);
+    }
+
+    if(m_model->count() == 1)
+        return;
+
+    if(m_task == MOVE)
+    {
+        QStyleOptionHeader opt;
+        initStyleOption(&opt);
+        opt.rect = m_model->data(m_pressed_column, RECT).toRect();
+        opt.text = name(m_pressed_column);
+        opt.section = m_pressed_column;
+        painter.setOpacity(0.75);
+        opt.rect.moveTo(m_mouse_pos.x() - m_press_offset, opt.rect.y());
+        style()->drawControl(QStyle::CE_Header, &opt, &painter, this);
+    }
+}
+
+int PlayListHeader::findColumn(QPoint pos)
+{
+    for(int i = 0; i < m_model->count(); ++i)
+    {
+        if(m_model->data(i,RECT).toRect().contains(pos))
+            return i;
+    }
+    return -1;
+}
+
+int PlayListHeader::size(int index) const
+{
+    return m_model->data(index, SIZE).toInt();
+}
+
+void PlayListHeader::setSize(int index, int size)
+{
+    m_model->setData(index, SIZE, size);
+}
+
+const QString PlayListHeader::name(int index) const
+{
+    return m_model->data(index, NAME).toString();
+}
+
+void PlayListHeader::adjustColumn(int index)
+{
+    int w = 0;
+
+    for(int i = 0; i < m_model->count(); ++i)
+    {
+        if(i != index)
+            w += size(i);
+    }
+
+    setSize(index, qMax(width() - 10 - m_scrollbar_width - w, MIN_SIZE));
+}
+
+int PlayListHeader::autoResizeColumn() const
+{
+    int index = -1;
+    for(int i = 0; i < m_model->count(); ++i)
+    {
+        if(m_model->data(i, AUTO_RESIZE).toBool())
+        {
+            index = i;
+            break;
+        }
+    }
+    return index;
+}
+
+void PlayListHeader::writeSettings()
+{
+    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
+    settings.beginGroup("Simple");
+    m_model->saveSettings(&settings);
+    QList<QVariant> sizes;
+    int autoResizeColumn = -1;
+    int trackStateColumn = -1;
+    for(int i = 0; i < m_model->count(); ++i)
+    {
+        sizes << m_model->data(i, SIZE).toInt();
+        if(m_model->data(i, AUTO_RESIZE).toBool())
+            autoResizeColumn = i;
+        if(m_model->data(i, TRACK_STATE).toBool())
+            trackStateColumn = i;
+    }
+    settings.setValue("pl_column_sizes", sizes);
+    settings.setValue("pl_autoresize_column", autoResizeColumn);
+    settings.setValue("pl_track_state_column", trackStateColumn);
+    settings.endGroup();
+}
+
+void PlayListHeader::showEvent(QShowEvent *)
+{
+    if(m_auto_resize)
+    {
+        adjustColumn(autoResizeColumn());
+        m_offset = qMin(m_offset, maxScrollValue());
+        updateColumns();
+        PlayListManager::instance()->selectedPlayList()->updateMetaData();
+    }
+    else
+        updateColumns();
+}
+
+void PlayListHeader::hideEvent(QHideEvent *)
+{
+    writeSettings();
+}
+
+void PlayListHeader::initStyleOption(QStyleOptionHeader *opt)
+{
+    opt->initFrom(this);
+    opt->state = QStyle::State_None | QStyle::State_Raised | QStyle::State_Horizontal | QStyle::State_Enabled;
+    opt->orientation = Qt::Horizontal;
+    opt->iconAlignment = Qt::AlignVCenter;
+    opt->textAlignment = Qt::AlignLeft | Qt::AlignVCenter;
+}