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/* $Id: QIToolBar.cpp $ */
/** @file
* VBox Qt GUI - QIToolBar class implementation.
*/
/*
* Copyright (C) 2006-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.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, in version 3 of the
* License.
*
* 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, see <https://www.gnu.org/licenses>.
*
* SPDX-License-Identifier: GPL-3.0-only
*/
/* Qt includes: */
#include <QLayout>
#include <QMainWindow>
#include <QResizeEvent>
#ifdef VBOX_WS_MAC
# include <QApplication>
# include <QPainter>
# include <QPainterPath>
#endif
/* GUI includes: */
#include "QIToolBar.h"
#ifdef VBOX_WS_MAC
# include "VBoxUtils.h"
#endif
QIToolBar::QIToolBar(QWidget *pParent /* = 0 */)
: QToolBar(pParent)
, m_pMainWindow(qobject_cast<QMainWindow*>(pParent))
#ifdef VBOX_WS_MAC
, m_fEmulateUnifiedToolbar(false)
, m_iOverallContentsWidth(0)
, m_iBrandingWidth(0)
#endif
{
prepare();
}
void QIToolBar::setUseTextLabels(bool fEnable)
{
/* Determine tool-button style on the basis of passed flag: */
Qt::ToolButtonStyle tbs = fEnable ? Qt::ToolButtonTextUnderIcon : Qt::ToolButtonIconOnly;
/* Depending on parent, assign this style: */
if (m_pMainWindow)
m_pMainWindow->setToolButtonStyle(tbs);
else
setToolButtonStyle(tbs);
}
bool QIToolBar::useTextLabels() const
{
/* Depending on parent, return the style: */
if (m_pMainWindow)
return m_pMainWindow->toolButtonStyle() == Qt::ToolButtonTextUnderIcon;
else
return toolButtonStyle() == Qt::ToolButtonTextUnderIcon;
}
#ifdef VBOX_WS_MAC
void QIToolBar::enableMacToolbar()
{
/* Depending on parent, enable unified title/tool-bar: */
if (m_pMainWindow)
m_pMainWindow->setUnifiedTitleAndToolBarOnMac(true);
}
void QIToolBar::emulateMacToolbar()
{
/* Remember request, to be used in paintEvent: */
m_fEmulateUnifiedToolbar = true;
}
void QIToolBar::setShowToolBarButton(bool fShow)
{
::darwinSetShowsToolbarButton(this, fShow);
}
void QIToolBar::updateLayout()
{
// WORKAROUND:
// There is a bug in Qt Cocoa which result in showing a "more arrow" when
// the necessary size of the tool-bar is increased. Also for some languages
// the with doesn't match if the text increase. So manually adjust the size
// after changing the text.
QSizePolicy sp = sizePolicy();
setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
adjustSize();
setSizePolicy(sp);
layout()->invalidate();
layout()->activate();
}
void QIToolBar::enableBranding(const QIcon &icnBranding,
const QString &strBranding,
const QColor &clrBranding,
int iBrandingWidth)
{
m_icnBranding = icnBranding;
m_strBranding = strBranding;
m_clrBranding = clrBranding;
m_iBrandingWidth = iBrandingWidth;
update();
}
#endif /* VBOX_WS_MAC */
bool QIToolBar::event(QEvent *pEvent)
{
/* Sanity check: */
if (!pEvent)
return QToolBar::event(pEvent);
/* Handle required event types: */
switch (pEvent->type())
{
#ifdef VBOX_WS_MAC
case QEvent::LayoutRequest:
{
/* Recalculate overall contents width on layout
* request if we have branding stuff: */
if (!m_icnBranding.isNull())
recalculateOverallContentsWidth();
break;
}
#endif /* VBOX_WS_MAC */
default:
break;
}
/* Call to base-class: */
return QToolBar::event(pEvent);
}
void QIToolBar::resizeEvent(QResizeEvent *pEvent)
{
/* Call to base-class: */
QToolBar::resizeEvent(pEvent);
/* Notify listeners about new size: */
emit sigResized(pEvent->size());
}
#ifdef VBOX_WS_MAC
void QIToolBar::paintEvent(QPaintEvent *pEvent)
{
/* Call to base-class: */
QToolBar::paintEvent(pEvent);
/* If we have request to emulate unified tool-bar: */
if (m_fEmulateUnifiedToolbar)
{
/* Limit painting with incoming rectangle: */
QPainter painter(this);
painter.setClipRect(pEvent->rect());
/* Acquire full rectangle: */
const QRect rectangle = rect();
/* Prepare gradient: */
const QColor backgroundColor = QApplication::palette().color(QPalette::Active, QPalette::Window);
QLinearGradient gradient(rectangle.topLeft(), rectangle.bottomLeft());
gradient.setColorAt(0, backgroundColor.darker(105));
gradient.setColorAt(1, backgroundColor.darker(115));
/* Fill background: */
painter.fillRect(rectangle, gradient);
/* Do we have branding stuff and a place for it? */
if ( !m_icnBranding.isNull()
&& width() >= m_iOverallContentsWidth + m_iBrandingWidth)
{
/* A bit of common stuff: */
QFont fnt = font();
int iTextWidth = 0;
int iTextHeight = 0;
/* Configure font to fit width (m_iBrandingWidth - 2 * 4): */
if (useTextLabels())
{
for (int i = 0; i <= 10; ++i) // no more than 10 tries ..
{
if (fnt.pixelSize() == -1)
fnt.setPointSize(fnt.pointSize() - i);
else
fnt.setPixelSize(fnt.pixelSize() - i);
iTextWidth = QFontMetrics(fnt).size(0, m_strBranding).width();
if (iTextWidth <= m_iBrandingWidth - 2 * 4)
break;
}
iTextHeight = QFontMetrics(fnt).height();
}
/* Draw pixmap: */
const int iIconSize = qMin(rectangle.height(), 32 /* default */);
const int iIconMarginH = (m_iBrandingWidth - iIconSize) / 2;
const int iIconMarginV = (rectangle.height() - iIconSize - iTextHeight) / 2;
const int iIconX = rectangle.width() - iIconSize - iIconMarginH;
const int iIconY = iIconMarginV;
painter.drawPixmap(iIconX, iIconY, m_icnBranding.pixmap(QSize(iIconSize, iIconSize)));
/* Draw text path: */
if (useTextLabels())
{
const int iTextMargingH = (m_iBrandingWidth - iTextWidth) / 2;
const int iTextX = rectangle.width() - iTextWidth - iTextMargingH;
const int iTextY = iIconY + iIconSize + iTextHeight;
QPainterPath textPath;
textPath.addText(0, 0, fnt, m_strBranding);
textPath.translate(iTextX, iTextY);
painter.setRenderHints(QPainter::Antialiasing | QPainter::TextAntialiasing);
painter.setPen(QPen(m_clrBranding.darker(80), 2, Qt::SolidLine, Qt::RoundCap));
painter.drawPath(QPainterPathStroker().createStroke(textPath));
painter.setBrush(Qt::black);
painter.setPen(Qt::NoPen);
painter.drawPath(textPath);
}
}
}
}
#endif /* VBOX_WS_MAC */
void QIToolBar::prepare()
{
/* Configure tool-bar: */
setFloatable(false);
setMovable(false);
#ifdef VBOX_WS_MAC
setStyleSheet("QToolBar { border: 0px none black; }");
#endif
/* Configure tool-bar' layout: */
if (layout())
layout()->setContentsMargins(0, 0, 0, 0);
/* Configure tool-bar' context-menu policy: */
setContextMenuPolicy(Qt::PreventContextMenu);
}
#ifdef VBOX_WS_MAC
void QIToolBar::recalculateOverallContentsWidth()
{
/* Reset contents width: */
m_iOverallContentsWidth = 0;
/* Caclulate new value: */
if (!layout())
return;
int iResult = 0;
const int iSpacing = layout()->spacing();
foreach (QAction *pAction, actions())
{
if (!pAction || !pAction->isVisible())
continue;
QWidget *pWidget = widgetForAction(pAction);
if (!pWidget)
continue;
/* Add each widget width and spacing: */
const int iWidth = pWidget->width() + iSpacing;
iResult += iWidth;
}
/* Subtract last spacing: */
iResult -= iSpacing;
/* Update result: */
m_iOverallContentsWidth = qMax(m_iOverallContentsWidth, iResult);
}
#endif /* VBOX_WS_MAC */
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