toolbar.cpp Example File

mainwindows/mainwindow/toolbar.cpp
/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "toolbar.h"

#include <QMainWindow>
#include <QMenu>
#include <QPainter>
#include <QPainterPath>
#include <QSpinBox>
#include <QLabel>
#include <QToolTip>

#include <stdlib.h>

static QPixmap genIcon(const QSize &iconSize, const QString &, const QColor &color)
{
    int w = iconSize.width();
    int h = iconSize.height();

    QImage image(w, h, QImage::Format_ARGB32_Premultiplied);
    image.fill(0);

    QPainter p(&image);

    extern void render_qt_text(QPainter *, int, int, const QColor &);
    render_qt_text(&p, w, h, color);

    return QPixmap::fromImage(image, Qt::DiffuseDither | Qt::DiffuseAlphaDither);
}

static QPixmap genIcon(const QSize &iconSize, int number, const QColor &color)
{ return genIcon(iconSize, QString::number(number), color); }

ToolBar::ToolBar(const QString &title, QWidget *parent)
    : QToolBar(parent), spinbox(0), spinboxAction(0)
{
    tip = 0;
    setWindowTitle(title);
    setObjectName(title);

    setIconSize(QSize(32, 32));

    QColor bg(palette().background().color());
    menu = new QMenu("One", this);
    menu->setIcon(genIcon(iconSize(), 1, Qt::black));
    menu->addAction(genIcon(iconSize(), "A", Qt::blue), "A");
    menu->addAction(genIcon(iconSize(), "B", Qt::blue), "B");
    menu->addAction(genIcon(iconSize(), "C", Qt::blue), "C");
    addAction(menu->menuAction());

    QAction *two = addAction(genIcon(iconSize(), 2, Qt::white), "Two");
    QFont boldFont;
    boldFont.setBold(true);
    two->setFont(boldFont);

    addAction(genIcon(iconSize(), 3, Qt::red), "Three");
    addAction(genIcon(iconSize(), 4, Qt::green), "Four");
    addAction(genIcon(iconSize(), 5, Qt::blue), "Five");
    addAction(genIcon(iconSize(), 6, Qt::yellow), "Six");
    orderAction = new QAction(this);
    orderAction->setText(tr("Order Items in Tool Bar"));
    connect(orderAction, SIGNAL(triggered()), SLOT(order()));

    randomizeAction = new QAction(this);
    randomizeAction->setText(tr("Randomize Items in Tool Bar"));
    connect(randomizeAction, SIGNAL(triggered()), SLOT(randomize()));

    addSpinBoxAction = new QAction(this);
    addSpinBoxAction->setText(tr("Add Spin Box"));
    connect(addSpinBoxAction, SIGNAL(triggered()), SLOT(addSpinBox()));

    removeSpinBoxAction = new QAction(this);
    removeSpinBoxAction->setText(tr("Remove Spin Box"));
    removeSpinBoxAction->setEnabled(false);
    connect(removeSpinBoxAction, SIGNAL(triggered()), SLOT(removeSpinBox()));

    movableAction = new QAction(tr("Movable"), this);
    movableAction->setCheckable(true);
    connect(movableAction, SIGNAL(triggered(bool)), SLOT(changeMovable(bool)));

    allowedAreasActions = new QActionGroup(this);
    allowedAreasActions->setExclusive(false);

    allowLeftAction = new QAction(tr("Allow on Left"), this);
    allowLeftAction->setCheckable(true);
    connect(allowLeftAction, SIGNAL(triggered(bool)), SLOT(allowLeft(bool)));

    allowRightAction = new QAction(tr("Allow on Right"), this);
    allowRightAction->setCheckable(true);
    connect(allowRightAction, SIGNAL(triggered(bool)), SLOT(allowRight(bool)));

    allowTopAction = new QAction(tr("Allow on Top"), this);
    allowTopAction->setCheckable(true);
    connect(allowTopAction, SIGNAL(triggered(bool)), SLOT(allowTop(bool)));

    allowBottomAction = new QAction(tr("Allow on Bottom"), this);
    allowBottomAction->setCheckable(true);
    connect(allowBottomAction, SIGNAL(triggered(bool)), SLOT(allowBottom(bool)));

    allowedAreasActions->addAction(allowLeftAction);
    allowedAreasActions->addAction(allowRightAction);
    allowedAreasActions->addAction(allowTopAction);
    allowedAreasActions->addAction(allowBottomAction);

    areaActions = new QActionGroup(this);
    areaActions->setExclusive(true);

    leftAction = new QAction(tr("Place on Left") , this);
    leftAction->setCheckable(true);
    connect(leftAction, SIGNAL(triggered(bool)), SLOT(placeLeft(bool)));

    rightAction = new QAction(tr("Place on Right") , this);
    rightAction->setCheckable(true);
    connect(rightAction, SIGNAL(triggered(bool)), SLOT(placeRight(bool)));

    topAction = new QAction(tr("Place on Top") , this);
    topAction->setCheckable(true);
    connect(topAction, SIGNAL(triggered(bool)), SLOT(placeTop(bool)));

    bottomAction = new QAction(tr("Place on Bottom") , this);
    bottomAction->setCheckable(true);
    connect(bottomAction, SIGNAL(triggered(bool)), SLOT(placeBottom(bool)));

    areaActions->addAction(leftAction);
    areaActions->addAction(rightAction);
    areaActions->addAction(topAction);
    areaActions->addAction(bottomAction);

    toolBarBreakAction = new QAction(tr("Insert break"), this);
    connect(toolBarBreakAction, SIGNAL(triggered(bool)), this, SLOT(insertToolBarBreak()));

    connect(movableAction, SIGNAL(triggered(bool)), areaActions, SLOT(setEnabled(bool)));

    connect(movableAction, SIGNAL(triggered(bool)), allowedAreasActions, SLOT(setEnabled(bool)));

    menu = new QMenu(title, this);
    menu->addAction(toggleViewAction());
    menu->addSeparator();
    menu->addAction(orderAction);
    menu->addAction(randomizeAction);
    menu->addSeparator();
    menu->addAction(addSpinBoxAction);
    menu->addAction(removeSpinBoxAction);
    menu->addSeparator();
    menu->addAction(movableAction);
    menu->addSeparator();
    menu->addActions(allowedAreasActions->actions());
    menu->addSeparator();
    menu->addActions(areaActions->actions());
    menu->addSeparator();
    menu->addAction(toolBarBreakAction);

    connect(menu, SIGNAL(aboutToShow()), this, SLOT(updateMenu()));

    randomize();
}

void ToolBar::updateMenu()
{
    QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget());
    Q_ASSERT(mainWindow != 0);

    const Qt::ToolBarArea area = mainWindow->toolBarArea(this);
    const Qt::ToolBarAreas areas = allowedAreas();

    movableAction->setChecked(isMovable());

    allowLeftAction->setChecked(isAreaAllowed(Qt::LeftToolBarArea));
    allowRightAction->setChecked(isAreaAllowed(Qt::RightToolBarArea));
    allowTopAction->setChecked(isAreaAllowed(Qt::TopToolBarArea));
    allowBottomAction->setChecked(isAreaAllowed(Qt::BottomToolBarArea));

    if (allowedAreasActions->isEnabled()) {
        allowLeftAction->setEnabled(area != Qt::LeftToolBarArea);
        allowRightAction->setEnabled(area != Qt::RightToolBarArea);
        allowTopAction->setEnabled(area != Qt::TopToolBarArea);
        allowBottomAction->setEnabled(area != Qt::BottomToolBarArea);
    }

    leftAction->setChecked(area == Qt::LeftToolBarArea);
    rightAction->setChecked(area == Qt::RightToolBarArea);
    topAction->setChecked(area == Qt::TopToolBarArea);
    bottomAction->setChecked(area == Qt::BottomToolBarArea);

    if (areaActions->isEnabled()) {
        leftAction->setEnabled(areas & Qt::LeftToolBarArea);
        rightAction->setEnabled(areas & Qt::RightToolBarArea);
        topAction->setEnabled(areas & Qt::TopToolBarArea);
        bottomAction->setEnabled(areas & Qt::BottomToolBarArea);
    }
}

void ToolBar::order()
{
    QList<QAction *> ordered, actions1 = actions(),
                              actions2 = findChildren<QAction *>();
    while (!actions2.isEmpty()) {
        QAction *action = actions2.takeFirst();
        if (!actions1.contains(action))
            continue;
        actions1.removeAll(action);
        ordered.append(action);
    }

    clear();
    addActions(ordered);

    orderAction->setEnabled(false);
}

void ToolBar::randomize()
{
    QList<QAction *> randomized, actions = this->actions();
    while (!actions.isEmpty()) {
        QAction *action = actions.takeAt(rand() % actions.size());
        randomized.append(action);
    }
    clear();
    addActions(randomized);

    orderAction->setEnabled(true);
}

void ToolBar::addSpinBox()
{
    if (!spinbox) {
        spinbox = new QSpinBox(this);
    }
    if (!spinboxAction)
        spinboxAction = addWidget(spinbox);
    else
        addAction(spinboxAction);

    addSpinBoxAction->setEnabled(false);
    removeSpinBoxAction->setEnabled(true);
}

void ToolBar::removeSpinBox()
{
    if (spinboxAction)
        removeAction(spinboxAction);

    addSpinBoxAction->setEnabled(true);
    removeSpinBoxAction->setEnabled(false);
}

void ToolBar::allow(Qt::ToolBarArea area, bool a)
{
    Qt::ToolBarAreas areas = allowedAreas();
    areas = a ? areas | area : areas & ~area;
    setAllowedAreas(areas);

    if (areaActions->isEnabled()) {
        leftAction->setEnabled(areas & Qt::LeftToolBarArea);
        rightAction->setEnabled(areas & Qt::RightToolBarArea);
        topAction->setEnabled(areas & Qt::TopToolBarArea);
        bottomAction->setEnabled(areas & Qt::BottomToolBarArea);
    }
}

void ToolBar::place(Qt::ToolBarArea area, bool p)
{
    if (!p)
        return;

    QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget());
    Q_ASSERT(mainWindow != 0);

    mainWindow->addToolBar(area, this);

    if (allowedAreasActions->isEnabled()) {
        allowLeftAction->setEnabled(area != Qt::LeftToolBarArea);
        allowRightAction->setEnabled(area != Qt::RightToolBarArea);
        allowTopAction->setEnabled(area != Qt::TopToolBarArea);
        allowBottomAction->setEnabled(area != Qt::BottomToolBarArea);
    }
}

void ToolBar::changeMovable(bool movable)
{ setMovable(movable); }

void ToolBar::allowLeft(bool a)
{ allow(Qt::LeftToolBarArea, a); }

void ToolBar::allowRight(bool a)
{ allow(Qt::RightToolBarArea, a); }

void ToolBar::allowTop(bool a)
{ allow(Qt::TopToolBarArea, a); }

void ToolBar::allowBottom(bool a)
{ allow(Qt::BottomToolBarArea, a); }

void ToolBar::placeLeft(bool p)
{ place(Qt::LeftToolBarArea, p); }

void ToolBar::placeRight(bool p)
{ place(Qt::RightToolBarArea, p); }

void ToolBar::placeTop(bool p)
{ place(Qt::TopToolBarArea, p); }

void ToolBar::placeBottom(bool p)
{ place(Qt::BottomToolBarArea, p); }

void ToolBar::insertToolBarBreak()
{
    QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget());
    Q_ASSERT(mainWindow != 0);

    mainWindow->insertToolBarBreak(this);
}

void ToolBar::enterEvent(QEvent*)
{
/*
    These labels on top of toolbars look darn ugly

    if (tip == 0) {
        tip = new QLabel(windowTitle(), this);
        QPalette pal = tip->palette();
        QColor c = Qt::black;
        c.setAlpha(100);
        pal.setColor(QPalette::Window, c);
        pal.setColor(QPalette::Foreground, Qt::white);
        tip->setPalette(pal);
        tip->setAutoFillBackground(true);
        tip->setMargin(3);
        tip->setText(windowTitle());
    }
    QPoint c = rect().center();
    QSize hint = tip->sizeHint();
    tip->setGeometry(c.x() - hint.width()/2, c.y() - hint.height()/2,
                        hint.width(), hint.height());

    tip->show();
*/
}

void ToolBar::leaveEvent(QEvent*)
{
    if (tip != 0)
        tip->hide();
}

© 2016 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.