toolbar.cpp Example File

mainwindows/mainwindow/toolbar.cpp 
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 #include "toolbar.h"

 #include <QRandomGenerator>

 #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, qreal pixelRatio)
 {
     int w = qRound(iconSize.width() * pixelRatio);
     int h = qRound(iconSize.height() * pixelRatio);

     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);

     QPixmap pm = QPixmap::fromImage(image, Qt::DiffuseDither | Qt::DiffuseAlphaDither);
     pm.setDevicePixelRatio(pixelRatio);
     return pm;
 }

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

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

     setIconSize(QSize(32, 32));

     qreal dpr = devicePixelRatioF();
     menu = new QMenu("One", this);
     menu->setIcon(genIcon(iconSize(), 1, Qt::black, dpr));
     menu->addAction(genIcon(iconSize(), "A", Qt::blue, dpr), "A");
     menu->addAction(genIcon(iconSize(), "B", Qt::blue, dpr), "B");
     menu->addAction(genIcon(iconSize(), "C", Qt::blue, dpr), "C");
     addAction(menu->menuAction());

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

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

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

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

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

     movableAction = new QAction(tr("Movable"), this);
     movableAction->setCheckable(true);
     connect(movableAction, &QAction::triggered, this, &ToolBar::changeMovable);

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

     allowLeftAction = new QAction(tr("Allow on Left"), this);
     allowLeftAction->setCheckable(true);
     connect(allowLeftAction, &QAction::triggered, this, &ToolBar::allowLeft);

     allowRightAction = new QAction(tr("Allow on Right"), this);
     allowRightAction->setCheckable(true);
     connect(allowRightAction, &QAction::triggered, this, &ToolBar::allowRight);

     allowTopAction = new QAction(tr("Allow on Top"), this);
     allowTopAction->setCheckable(true);
     connect(allowTopAction, &QAction::triggered, this, &ToolBar::allowTop);

     allowBottomAction = new QAction(tr("Allow on Bottom"), this);
     allowBottomAction->setCheckable(true);
     connect(allowBottomAction, &QAction::triggered, this, &ToolBar::allowBottom);

     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, &QAction::triggered, this, &ToolBar::placeLeft);

     rightAction = new QAction(tr("Place on Right") , this);
     rightAction->setCheckable(true);
     connect(rightAction, &QAction::triggered, this, &ToolBar::placeRight);

     topAction = new QAction(tr("Place on Top") , this);
     topAction->setCheckable(true);
     connect(topAction, &QAction::triggered, this, &ToolBar::placeTop);

     bottomAction = new QAction(tr("Place on Bottom") , this);
     bottomAction->setCheckable(true);
     connect(bottomAction, &QAction::triggered, this, &ToolBar::placeBottom);

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

     connect(movableAction, &QAction::triggered, areaActions, &QActionGroup::setEnabled);

     connect(movableAction, &QAction::triggered, allowedAreasActions, &QActionGroup::setEnabled);

     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(tr("Insert break"), this, &ToolBar::insertToolBarBreak);

     connect(menu, &QMenu::aboutToShow, this, &ToolBar::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;
     QList<QAction *> actions1 = actions();
     foreach (QAction *action, findChildren<QAction *>()) {
         if (!actions1.contains(action))
             continue;
         actions1.removeAll(action);
         ordered.append(action);
     }

     clear();
     addActions(ordered);

     orderAction->setEnabled(false);
 }

 void ToolBar::randomize()
 {
     QList<QAction *> randomized;
     QList<QAction *> actions = this->actions();
     while (!actions.isEmpty()) {
         QAction *action = actions.takeAt(QRandomGenerator::global()->bounded(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);
 }

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