comparison widgets/LevelPanToolButton.cpp @ 929:20698aa6a517 tonioni

Introduce level/pan toolbar buttons

+/* -*- 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 <iostream>
+using std::cerr;
+using std::endl;
+
+LevelPanToolButton::LevelPanToolButton(QWidget *parent) :
+    QToolButton(parent),
+    m_pixels(32)
+{
+    m_lpw = new LevelPanWidget();
+
+    connect(m_lpw, SIGNAL(levelChanged(float)), this, SIGNAL(levelChanged(float)));
+    connect(m_lpw, SIGNAL(levelChanged(float)), this, SLOT(redraw()));
+
+    connect(m_lpw, SIGNAL(panChanged(float)), this, SIGNAL(panChanged(float)));
+    connect(m_lpw, SIGNAL(panChanged(float)), this, SLOT(redraw()));
+    
+    QMenu *menu = new QMenu();
+    QWidgetAction *wa = new QWidgetAction(menu);
+    wa->setDefaultWidget(m_lpw);
+    menu->addAction(wa);
+
+    setPopupMode(MenuButtonPopup);
+    setMenu(menu);
+    setCheckable(true);
+
+    redraw();
+}
+
+LevelPanToolButton::~LevelPanToolButton()
+{
+}
+
+float
+LevelPanToolButton::getLevel() const
+{
+    return m_lpw->getLevel();
+}
+
+float
+LevelPanToolButton::getPan() const
+{
+    return m_lpw->getPan();
+}
+
+void
+LevelPanToolButton::setImageSize(int pixels)
+{
+    m_pixels = pixels;
+    redraw();
+}
+
+void
+LevelPanToolButton::setLevel(float level)
+{
+    m_lpw->setLevel(level);
+}
+
+void
+LevelPanToolButton::setPan(float pan)
+{
+    m_lpw->setPan(pan);
+}
+
+void
+LevelPanToolButton::redraw()
+{
+    QSize sz(m_pixels, m_pixels);
+
+    m_lpw->setFixedWidth(m_pixels * 4);
+    m_lpw->setFixedHeight(m_pixels * 4);
+    
+    QPixmap px(sz);
+    px.fill(Qt::transparent);
+    m_lpw->renderTo(&px, QRectF(QPointF(), sz), false);
+    setIcon(px);
+}
+