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idealbar.cpp

/*
 * QMPDClient - An MPD client written in Qt 4.
 * Copyright (C) 2005-2008 HÃ¥vard Tautra Knutsen <havtknut@tihlde.org>
 *
 * 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 "idealbar.h"
#include "idealsplitter.h"
#include "verticalbutton.h"
#include <QStackedWidget>
#include <QPushButton>
#include <QVBoxLayout>

IdealBar::IdealBar(QWidget *parent) : QWidget(parent),
            m_stack(0),
            m_layout(new QVBoxLayout(this)),
            m_splitter(0) {
      Q_ASSERT(m_layout);
      setObjectName("idealbar");
      setMinimumWidth(22);
      m_layout->setMargin(0);
      m_layout->setSpacing(3);
      m_layout->addItem(new QSpacerItem(16, 20, QSizePolicy::Minimum, QSizePolicy::Expanding));
}

QPushButton *IdealBar::addPanel(QWidget *panel, bool left) {
      Q_ASSERT(m_layout);
      Q_ASSERT(m_stack);
      QFrame *frame = new QFrame(m_stack);
      frame->setFrameStyle(QFrame::StyledPanel);
      QVBoxLayout *vb = new QVBoxLayout(frame);
      vb->addWidget(panel);
      m_stack->addWidget(frame);
      VerticalButton *pb = new VerticalButton("", this, left);

      connect(pb, SIGNAL(pressed()), this, SLOT(buttonPressed()));
      m_layout->insertWidget(m_layout->count() - 1, pb);
      m_relation.insert(pb, frame);
      return pb;
}

void IdealBar::paintEvent(QPaintEvent *e) {
      foreach (VerticalButton *b, m_relation.keys()) {
            Q_ASSERT(m_stack);
            Q_ASSERT(m_splitter);
            if (m_splitter->isCollapsed(m_index))
                  b->setActive(false);
            else
                  b->setActive(m_relation.value(b) == m_stack->currentWidget());
      }
      QWidget::paintEvent(e);
}

void IdealBar::buttonPressed() {
      Q_ASSERT(m_splitter);
      Q_ASSERT(m_stack);
      VerticalButton *button = qobject_cast<VerticalButton*>(sender());
      QWidget *panel = m_relation.value(button);

      if (m_splitter->isCollapsed(m_index)) // Open a closed tab
            m_splitter->setExpanded(m_index);
      else if (button->isActive()) {// Close current tab
            m_splitter->setCollapsed(m_index);
            if (m_splitter->isCollapsed(m_index ? 0 : 1))
                  m_splitter->setExpanded(m_index ? 0 : 1);
      }

      m_stack->setCurrentWidget(panel);
      update();
}

void IdealBar::link(QStackedWidget *s, IdealSplitter *sp) {
      if (!m_stack)
            m_stack = s;
      if (!m_splitter) {
            m_splitter = sp;
            Q_ASSERT(m_stack);
            Q_ASSERT(m_splitter);
            m_index = m_splitter->indexOf(m_stack);
            connect(m_splitter, SIGNAL(sectionCollapsed(int)), this, SLOT(update()));
            connect(m_splitter, SIGNAL(sectionExpanded(int)), this, SLOT(update()));
      }
}

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