qsui: using single ListWidget inctance

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@6779 90c681e8-e032-0410-971d-27865f9a5e38

1 files changed, 248 insertions, 48 deletions

diff --git a/src/plugins/Ui/qsui/qsuitabwidget.cpp b/src/plugins/Ui/qsui/qsuitabwidget.cpp
index 6dfad0433..5a841a90f 100644
--- a/src/plugins/Ui/qsui/qsuitabwidget.cpp
+++ b/src/plugins/Ui/qsui/qsuitabwidget.cpp
@@ -1,5 +1,6 @@
 /***************************************************************************
- *   Copyright (C) 2012-2015 by Ilya Kotov                                 *
+ *   Copyright (C) 2016 The Qt Company Ltd.                                *
+ *   Copyright (C) 2016 by Ilya Kotov                                      *
  *   forkotov02@hotmail.ru                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -18,42 +19,146 @@
  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
  ***************************************************************************/
 
-#include <QMouseEvent>
-#include <QTabBar>
+//Based on QTabWidget class copyrighted by Qt Company Ltd.
+
+#include <QStylePainter>
 #include <QSettings>
 #include <QApplication>
-#include <qmmp/qmmp.h>
-#include "qsuitabbar.h"
+#include <QStyleOptionTabWidgetFrame>
+#include <qmmpui/playlistmanager.h>
 #include "qsuitabwidget.h"
 
-QSUiTabWidget::QSUiTabWidget(QWidget *parent) : QTabWidget(parent)
+QSUiTabWidget::QSUiTabWidget(QWidget *parent) : QWidget(parent)
 {
-    setTabBar(new QSUiTabBar(this));
-    setMovable(true);
+    m_tabBar = new QSUiTabBar(this);
+    m_tabBar->setMovable(true);
+    m_tabBar->setExpanding(false);
+    m_listWidget = new ListWidget(PlayListManager::instance()->selectedPlayList(), this);
+    m_listWidget->setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred,
+                                            QSizePolicy::TabWidget));
+    setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding,
+                              QSizePolicy::TabWidget));
+
+
+    setFocusPolicy(Qt::TabFocus);
+    setFocusProxy(m_tabBar);
+    m_rightCornerWidget = 0;
+    m_leftCornerWidget = 0;
+
     m_menu = new QMenu(this);
     m_group = new QActionGroup(this);
     m_group->setExclusive(true);
-    connect(tabBar(), SIGNAL(tabMoved(int,int)), SIGNAL(tabMoved(int,int)));
-    connect(tabBar(), SIGNAL(tabMoved(int,int)), SLOT(updateActions()));
-    connect(tabBar(), SIGNAL(tabCloseRequested(int)), SLOT(onTabCloseRequest(int)));
-    connect(this, SIGNAL(currentChanged(int)), SLOT(onCurrentChanged(int)));
+    connect(m_tabBar, SIGNAL(tabMoved(int,int)), SIGNAL(tabMoved(int,int)));
+    connect(m_tabBar, SIGNAL(tabMoved(int,int)), SLOT(updateActions()));
+    connect(m_tabBar, SIGNAL(tabCloseRequested(int)), SIGNAL(tabCloseRequested(int)));
+    connect(m_tabBar, SIGNAL(currentChanged(int)), SLOT(onCurrentChanged(int)));
     connect(m_menu, SIGNAL(triggered(QAction*)), SLOT(onActionTriggered(QAction*)));
     readSettings();
 }
 
-QMenu *QSUiTabWidget::menu()
+QSUiTabBar *QSUiTabWidget::tabBar() const
+{
+    return m_tabBar;
+}
+
+ListWidget *QSUiTabWidget::listWidget() const
+{
+    return m_listWidget;
+}
+
+void QSUiTabWidget::setCornerWidget(QWidget *widget, Qt::Corner corner)
+{
+    if (widget && widget->parentWidget() != this)
+            widget->setParent(this);
+
+    if (corner & Qt::TopRightCorner)
+    {
+        if (m_rightCornerWidget)
+            m_rightCornerWidget->hide();
+        m_rightCornerWidget = widget;
+    }
+    else
+    {
+        if (m_leftCornerWidget)
+            m_leftCornerWidget->hide();
+        m_leftCornerWidget = widget;
+    }
+    setUpLayout();
+}
+
+void QSUiTabWidget::readSettings()
+{
+    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
+    settings.beginGroup("Simple");
+    m_tabBar->setTabsClosable(settings.value("pl_tabs_closable", false).toBool());
+    QFont tab_font = qApp->font(m_tabBar);
+    if(!settings.value("use_system_fonts", true).toBool())
+    {
+        tab_font.fromString(settings.value("pl_tabs_font", tab_font.toString()).toString());
+    }
+    m_tabBar->setFont(tab_font);
+    settings.endGroup();
+    m_tabBar->updateGeometry();
+    setUpLayout();
+}
+
+QMenu *QSUiTabWidget::menu() const
 {
     return m_menu;
 }
 
-void QSUiTabWidget::onTabCloseRequest(int i)
+void QSUiTabWidget::setTabText(int index, const QString &text)
 {
-    if(!tabsClosable())
-        emit tabCloseRequested(i);
+    QString tabText = text;
+    tabText.replace("&","&&");
+    m_tabBar->setTabText(index, tabText);
+    m_menu->actions().at(index)->setText(tabText);
+}
+
+int QSUiTabWidget::addTab(const QString &label)
+{
+    return insertTab(-1, label);
+}
+
+int QSUiTabWidget::addTab(const QIcon &icon, const QString &label)
+{
+    return insertTab(-1, icon, label);
+}
+
+int QSUiTabWidget::insertTab(int index, const QString &label)
+{
+    return insertTab(index, QIcon(), label);
+}
+
+int QSUiTabWidget::insertTab(int index, const QIcon &icon, const QString &label)
+{
+    QString tabText = label;
+    index = m_tabBar->insertTab(index, icon, tabText.replace("&", "&&"));
+    setUpLayout();
+    tabInserted(index);
+    return index;
+}
+
+void QSUiTabWidget::removeTab(int index)
+{
+    m_tabBar->removeTab(index);
+    setUpLayout();
+    tabRemoved(index);
+}
+
+void QSUiTabWidget::setTabsVisible(bool visible)
+{
+    m_tabBar->setVisible(visible);
+}
+
+void QSUiTabWidget::setCurrentIndex(int index)
+{
+    m_tabBar->setCurrentIndex(index);
 }
 
 void QSUiTabWidget::onCurrentChanged(int index)
 {
+    emit currentChanged(index);
     if(index >= m_menu->actions().count())
         return;
     m_menu->actions().at(index)->setChecked(true);
@@ -61,16 +166,136 @@ void QSUiTabWidget::onCurrentChanged(int index)
 
 void QSUiTabWidget::onActionTriggered(QAction *action)
 {
-    setCurrentIndex(m_menu->actions().indexOf(action));
+    m_tabBar->setCurrentIndex(m_menu->actions().indexOf(action));
 }
 
 void QSUiTabWidget::updateActions()
 {
     for(int i = 0; i < m_menu->actions().size(); ++i)
     {
-         m_menu->actions().at(i)->setText(tabText(i));
+        m_menu->actions().at(i)->setText(m_tabBar->tabText(i));
     }
-    m_menu->actions().at(currentIndex())->setChecked(true);
+    m_menu->actions().at(m_tabBar->currentIndex())->setChecked(true);
+}
+
+void QSUiTabWidget::initStyleOption(QStyleOptionTabWidgetFrame *option) const
+{
+    if (!option)
+        return;
+
+    option->initFrom(this);
+    option->lineWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth, 0, this);
+
+    int exth = style()->pixelMetric(QStyle::PM_TabBarBaseHeight, 0, this);
+    QSize t(0, 0);
+    if (m_tabBar->isVisibleTo(const_cast<QSUiTabWidget *>(this)))
+        t = m_tabBar->sizeHint();
+
+    if (m_rightCornerWidget)
+    {
+        const QSize rightCornerSizeHint = m_rightCornerWidget->sizeHint();
+        const QSize bounds(rightCornerSizeHint.width(), t.height() - exth);
+        option->rightCornerWidgetSize = rightCornerSizeHint.boundedTo(bounds);
+    }
+    else
+    {
+        option->rightCornerWidgetSize = QSize(0, 0);
+    }
+
+    if (m_leftCornerWidget)
+    {
+        const QSize leftCornerSizeHint = m_leftCornerWidget->sizeHint();
+        const QSize bounds(leftCornerSizeHint.width(), t.height() - exth);
+        option->leftCornerWidgetSize = leftCornerSizeHint.boundedTo(bounds);
+    }
+    else
+    {
+        option->leftCornerWidgetSize = QSize(0, 0);
+    }
+
+
+    option->shape = QTabBar::RoundedNorth;
+
+    option->tabBarSize = t;
+
+#if QT_VERSION >= 0x050000
+    QRect tbRect = m_tabBar->geometry();
+    QRect selectedTabRect = tabBar()->tabRect(tabBar()->currentIndex());
+    option->tabBarRect = tbRect;
+    selectedTabRect.moveTopLeft(selectedTabRect.topLeft() + tbRect.topLeft());
+    option->selectedTabRect = selectedTabRect;
+#else
+    if(QStyleOptionTabWidgetFrameV2 *tabframe = qstyleoption_cast<QStyleOptionTabWidgetFrameV2*>(option))
+    {
+        QRect tbRect = tabBar()->geometry();
+        QRect selectedTabRect = tabBar()->tabRect(tabBar()->currentIndex());
+        tabframe->tabBarRect = tbRect;
+        selectedTabRect.moveTopLeft(selectedTabRect.topLeft() + tbRect.topLeft());
+        tabframe->selectedTabRect = selectedTabRect;
+    }
+#endif
+}
+
+void QSUiTabWidget::setUpLayout()
+{
+    QStyleOptionTabWidgetFrame option;
+    initStyleOption(&option);
+
+    QRect tabRect = style()->subElementRect(QStyle::SE_TabWidgetTabBar, &option, this);
+    m_panelRect = style()->subElementRect(QStyle::SE_TabWidgetTabPane, &option, this);
+    QRect contentsRect = style()->subElementRect(QStyle::SE_TabWidgetTabContents, &option, this);
+    QRect leftCornerRect = style()->subElementRect(QStyle::SE_TabWidgetLeftCorner, &option, this);
+    QRect rightCornerRect = style()->subElementRect(QStyle::SE_TabWidgetRightCorner, &option, this);
+
+    m_tabBar->setGeometry(tabRect);
+    m_listWidget->setGeometry(contentsRect);
+    if (m_leftCornerWidget)
+        m_leftCornerWidget->setGeometry(leftCornerRect);
+    if (m_rightCornerWidget)
+        m_rightCornerWidget->setGeometry(rightCornerRect);
+
+    updateGeometry();
+}
+
+void QSUiTabWidget::showEvent(QShowEvent *)
+{
+    setUpLayout();
+}
+
+void QSUiTabWidget::resizeEvent(QResizeEvent *e)
+{
+    QWidget::resizeEvent(e);
+    setUpLayout();
+}
+
+void QSUiTabWidget::paintEvent(QPaintEvent *)
+{
+    if(!m_tabBar->isVisibleTo(this))
+        return;
+    QStylePainter p(this);
+
+    QStyleOptionTabWidgetFrame opt;
+    initStyleOption(&opt);
+    opt.rect = m_panelRect;
+    p.drawPrimitive(QStyle::PE_FrameTabWidget, opt);
+}
+
+void QSUiTabWidget::changeEvent(QEvent *ev)
+{
+    if (ev->type() == QEvent::StyleChange
+#ifdef Q_OS_MAC
+            || ev->type() == QEvent::MacSizeChange
+#endif
+            )
+        setUpLayout();
+    QWidget::changeEvent(ev);
+}
+
+bool QSUiTabWidget::event(QEvent *ev)
+{
+    if (ev->type() == QEvent::LayoutRequest)
+        setUpLayout();
+    return QWidget::event(ev);
 }
 
 void QSUiTabWidget::tabInserted(int index)
@@ -78,7 +303,7 @@ void QSUiTabWidget::tabInserted(int index)
     QAction *action = new QAction(m_menu);
     action->setCheckable(true);
     action->setActionGroup(m_group);
-    action->setText(tabText(index));
+    action->setText(m_tabBar->tabText(index));
 
     if(m_menu->actions().isEmpty() || index == m_menu->actions().count())
     {
@@ -89,9 +314,8 @@ void QSUiTabWidget::tabInserted(int index)
         QAction *before = m_menu->actions().at(index);
         m_menu->insertAction(before, action);
     }
-    if(currentIndex() == index)
+    if(m_tabBar->currentIndex() == index)
         action->setChecked(true);
-    QTabWidget::tabInserted(index);
 }
 
 void QSUiTabWidget::tabRemoved(int index)
@@ -99,30 +323,6 @@ void QSUiTabWidget::tabRemoved(int index)
     QAction *a = m_menu->actions().at(index);
     m_menu->removeAction(a);
     delete a;
-    QTabWidget::tabRemoved(index);
-}
-
-void QSUiTabWidget::setTabText(int index, const QString &text)
-{
-    QTabWidget::setTabText(index, text);
-    m_menu->actions().at(index)->setText(text);
-}
-
-void QSUiTabWidget::readSettings()
-{
-    QSettings settings(Qmmp::configFile(), QSettings::IniFormat);
-    settings.beginGroup("Simple");
-    QFont tab_font = qApp->font(tabBar());
-    if(!settings.value("use_system_fonts", true).toBool())
-    {
-        tab_font.fromString(settings.value("pl_tabs_font", tab_font.toString()).toString());
-    }
-    tabBar()->setFont(tab_font);
-}
-
-void QSUiTabWidget::setTabsVisible(bool visible)
-{
-    tabBar()->setVisible(visible);
 }
 
 void QSUiTabWidget::mousePressEvent(QMouseEvent *e)
@@ -133,7 +333,7 @@ void QSUiTabWidget::mousePressEvent(QMouseEvent *e)
         e->accept();
         emit createPlayListRequested();
     }
-    QTabWidget::mousePressEvent(e);
+    QWidget::mousePressEvent(e);
 }
 
 void QSUiTabWidget::mouseDoubleClickEvent(QMouseEvent *e)
@@ -144,5 +344,5 @@ void QSUiTabWidget::mouseDoubleClickEvent(QMouseEvent *e)
         e->accept();
         emit createPlayListRequested();
     }
-    QTabWidget::mouseDoubleClickEvent(e);
+    QWidget::mouseDoubleClickEvent(e);
 }