diff widgets/LevelPanToolButton.cpp @ 946:36cddc3de023 alignment_view

Merge from default branch

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widgets/LevelPanToolButton.cpp	Mon Apr 20 09:19:52 2015 +0100
@@ -0,0 +1,173 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    
+    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.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "LevelPanToolButton.h"
+#include "LevelPanWidget.h"
+
+#include <QMenu>
+#include <QWidgetAction>
+#include <QImage>
+#include <QStylePainter>
+#include <QStyleOptionToolButton>
+
+#include <iostream>
+using std::cerr;
+using std::endl;
+
+LevelPanToolButton::LevelPanToolButton(QWidget *parent) :
+    QToolButton(parent),
+    m_pixels(32),
+    m_pixelsBig(32 * 3),
+    m_muted(false),
+    m_savedLevel(1.f)
+{
+    m_lpw = new LevelPanWidget();
+
+    connect(m_lpw, SIGNAL(levelChanged(float)), this, SIGNAL(levelChanged(float)));
+    connect(m_lpw, SIGNAL(levelChanged(float)), this, SLOT(selfLevelChanged(float)));
+
+    connect(m_lpw, SIGNAL(panChanged(float)), this, SIGNAL(panChanged(float)));
+    connect(m_lpw, SIGNAL(panChanged(float)), this, SLOT(update()));
+
+    connect(this, SIGNAL(clicked(bool)), this, SLOT(selfClicked()));
+    
+    QMenu *menu = new QMenu();
+    QWidgetAction *wa = new QWidgetAction(menu);
+    wa->setDefaultWidget(m_lpw);
+    menu->addAction(wa);
+
+    setPopupMode(InstantPopup);
+    setMenu(menu);
+
+    setImageSize(m_pixels);
+    setBigImageSize(m_pixelsBig);
+}
+
+LevelPanToolButton::~LevelPanToolButton()
+{
+}
+
+float
+LevelPanToolButton::getLevel() const
+{
+    return m_lpw->getLevel();
+}
+
+float
+LevelPanToolButton::getPan() const
+{
+    return m_lpw->getPan();
+}
+
+bool
+LevelPanToolButton::includesMute() const
+{
+    return m_lpw->includesMute();
+}
+
+void
+LevelPanToolButton::setImageSize(int pixels)
+{
+    m_pixels = pixels;
+
+    QPixmap px(m_pixels, m_pixels);
+    px.fill(Qt::transparent);
+    setIcon(px);
+}
+
+void
+LevelPanToolButton::setBigImageSize(int pixels)
+{
+    m_pixelsBig = pixels;
+
+    m_lpw->setFixedWidth(m_pixelsBig);
+    m_lpw->setFixedHeight(m_pixelsBig);
+}
+
+void
+LevelPanToolButton::setLevel(float level)
+{
+    m_lpw->setLevel(level);
+    update();
+}
+
+void
+LevelPanToolButton::setPan(float pan)
+{
+    m_lpw->setPan(pan);
+    update();
+}
+
+void
+LevelPanToolButton::setIncludeMute(bool include)
+{
+    m_lpw->setIncludeMute(include);
+    update();
+}
+
+void
+LevelPanToolButton::setEnabled(bool enabled)
+{
+    m_lpw->setEnabled(enabled);
+    QToolButton::setEnabled(enabled);
+}
+
+void
+LevelPanToolButton::selfLevelChanged(float level)
+{
+    if (level > 0.f) {
+	m_muted = false;
+    } else {
+	m_muted = true;
+	m_savedLevel = 1.f;
+    }
+    update();
+}
+
+void
+LevelPanToolButton::selfClicked()
+{
+    cerr << "selfClicked" << endl;
+    
+    if (m_muted) {
+	m_muted = false;
+	m_lpw->setLevel(m_savedLevel);
+	emit levelChanged(m_savedLevel);
+    } else {
+	m_savedLevel = m_lpw->getLevel();
+	m_muted = true;
+	m_lpw->setLevel(0.f);
+	emit levelChanged(0.f);
+    }
+    update();
+}
+
+void
+LevelPanToolButton::paintEvent(QPaintEvent *)
+{
+    QStylePainter p(this);
+    QStyleOptionToolButton opt;
+    initStyleOption(&opt);
+    opt.features &= (~QStyleOptionToolButton::HasMenu);
+    p.drawComplexControl(QStyle::CC_ToolButton, opt);
+    
+    if (m_pixels >= height()) {
+        setImageSize(height()-1);
+    }
+    
+    double margin = (double(height()) - m_pixels) / 2.0;
+    m_lpw->renderTo(this, QRectF(margin, margin, m_pixels, m_pixels), false);
+}
+
+