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OpenBoard/src/gui/UBDockPalette.cpp

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/*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <QPoint>
#include <QPointF>
#include <QPainterPath>
#include "UBDockPalette.h"
#include "core/UBSettings.h"
#include "frameworks/UBPlatformUtils.h"
#include "core/UBApplication.h"
#include "core/UBPreferencesController.h"
#include "core/UBDownloadManager.h"
#include "core/memcheck.h"
/**
* \brief The constructor
*/
UBDockPalette::UBDockPalette(QWidget *parent, const char *name)
:QWidget(parent, Qt::FramelessWindowHint | Qt::X11BypassWindowManagerHint)
, mOrientation(eUBDockOrientation_Left)
, mPreferredWidth(100)
, mPreferredHeight(100)
, mCanResize(false)
, mResized(false)
, mCollapseWidth(150)
, mLastWidth(-1)
, mHTab(0)
, mpStackWidget(NULL)
, mpLayout(NULL)
, mCurrentTab(0)
{
setObjectName(name);
mpLayout = new QVBoxLayout();
setLayout(mpLayout);
mpStackWidget = new QStackedWidget(this);
mpLayout->addWidget(mpStackWidget);
// clear the tab widgets
mTabWidgets.clear();
// We let 2 pixels in order to keep a small border for the resizing
setMinimumWidth(2*border() + 2);
if (parent)
{
setAttribute(Qt::WA_NoMousePropagation);
setAttribute(Qt::WA_TranslucentBackground);
}
else
{
// standalone window
setAttribute(Qt::WA_TranslucentBackground);
// !!!! Should be included into Windows after QT recompilation
#ifdef Q_WS_MAC
//setAttribute(Qt::WA_MacNoShadow);
#endif
}
mBackgroundBrush = QBrush(UBSettings::paletteColor);
// This is the only way to set the background as transparent!
setStyleSheet("QWidget {background-color: transparent}");
// Set the position of the tab
onToolbarPosUpdated();
connect(UBSettings::settings()->appToolBarPositionedAtTop, SIGNAL(changed(QVariant)), this, SLOT(onToolbarPosUpdated()));
connect(UBDownloadManager::downloadManager(), SIGNAL(allDownloadsFinished()), this, SLOT(onAllDownloadsFinished()));
}
/**
* \brief The destructor
*/
UBDockPalette::~UBDockPalette()
{
if(NULL != mpStackWidget)
{
delete mpStackWidget;
mpStackWidget = NULL;
}
if(NULL != mpLayout)
{
delete mpLayout;
mpLayout = NULL;
}
}
/**
* \brief Get the current orientation
* @return the current orientation
*/
eUBDockOrientation UBDockPalette::orientation()
{
return mOrientation;
}
/**
* \brief Set the current orientation
* @param orientation as the given orientation
*/
void UBDockPalette::setOrientation(eUBDockOrientation orientation)
{
// Set the size
mOrientation = orientation;
if(orientation == eUBDockOrientation_Left || orientation == eUBDockOrientation_Right)
{
setMaximumHeight(parentWidget()->height());
setMinimumHeight(maximumHeight());
}
else if(orientation == eUBDockOrientation_Top || orientation == eUBDockOrientation_Bottom)
{
setMaximumWidth(parentWidget()->width());
setMinimumWidth(maximumWidth());
}
}
/**
* \brief Handle the mouse move event
* @param as the mouse event
*/
void UBDockPalette::mouseMoveEvent(QMouseEvent *event)
{
QPoint p = event->pos();
if(mCanResize && ((mMousePressPos - p).manhattanLength() > QApplication::startDragDistance()))
{
switch(mOrientation)
{
case eUBDockOrientation_Left:
if(p.x() < collapseWidth() && p.x() >= minimumWidth())
{
resize(border(), height());
mLastWidth = collapseWidth() + 1;
mResized = true;
}
else if(p.x() <= maximumWidth() && p.x() >= minimumWidth())
{
resize(p.x(), height());
mResized = true;
}
break;
case eUBDockOrientation_Right:
if((this->x() + p.x() > parentWidget()->width() - collapseWidth()) && (this->x() + p.x() < parentWidget()->width()))
{
resize(border(), height());
mLastWidth = collapseWidth() + 1;
mResized = true;
}
else if((this->x() + p.x() >= parentWidget()->width() - maximumWidth()) && (this->x() + p.x() <= parentWidget()->width() - this->minimumWidth()))
{
resize(parentWidget()->width() - (this->x() + p.x()), height());
mResized = true;
}
break;
case eUBDockOrientation_Top:
case eUBDockOrientation_Bottom:
if(p.y() <= maximumHeight())
{
resize(width(), p.y());
mResized = true;
}
break;
default:
break;
}
}
}
/**
* \brief Handle the mouse press event
* @param as the mouse event
*/
void UBDockPalette::mousePressEvent(QMouseEvent *event)
{
mClickTime = QTime::currentTime();
// The goal here is to verify if the user can resize the widget.
// It is only possible to resize it if the border is selected
QPoint p = event->pos();
mMousePressPos = p;
mResized = false;
switch(mOrientation)
{
case eUBDockOrientation_Left:
if((p.x() >= width() - 2 * border()) && (p.x() <= width()))
{
mCanResize = true;
}
break;
case eUBDockOrientation_Right:
if((p.x() >= 0) && (p.x() <= 2 * border()))
{
mCanResize = true;
}
break;
case eUBDockOrientation_Top:
// Not supported yet
break;
case eUBDockOrientation_Bottom:
// Not supported yet
break;
default:
break;
}
}
/**
* \brief Handle the mouse release event
* @param event as the mouse event
*/
void UBDockPalette::mouseReleaseEvent(QMouseEvent *event)
{
Q_UNUSED(event);
if(!mResized && mClickTime.elapsed() < CLICKTIME)
{
int nbTabs = mTabWidgets.size();
int clickedTab = 0;
// If the clicked position is in the tab, perform the related action
if(eUBDockOrientation_Left == mOrientation)
{
if(mMousePressPos.x() >= width() - 2*border() &&
mMousePressPos.y() >= mHTab &&
mMousePressPos.x() <= width() &&
mMousePressPos.y() <= mHTab + nbTabs*TABSIZE + (nbTabs -1)*tabSpacing())
{
clickedTab = (mMousePressPos.y() - mHTab)/(TABSIZE+tabSpacing());
tabClicked(clickedTab);
}
}
else if(eUBDockOrientation_Right == mOrientation)
{
if(mMousePressPos.x() >= 0 &&
mMousePressPos.x() <= 2*border() &&
mMousePressPos.y() >= mHTab &&
mMousePressPos.y() <= mHTab + nbTabs*TABSIZE + (nbTabs -1)*tabSpacing())
{
clickedTab = (mMousePressPos.y() - mHTab)/(TABSIZE+tabSpacing());
tabClicked(clickedTab);
}
}
}
mCanResize = false;
}
/**
* \brief Handle the resize event
* @param event as the resize event
*/
void UBDockPalette::resizeEvent(QResizeEvent *event)
{
Q_UNUSED(event);
updateMaxWidth();
if(parentWidget())
{
setMinimumHeight(parentWidget()->height());
}
// Set the position
QPoint origin;
switch(mOrientation)
{
case eUBDockOrientation_Right:
origin.setX(parentWidget()->width() - this->width());
origin.setY(0);
break;
case eUBDockOrientation_Bottom:
// Not supported yet
case eUBDockOrientation_Top:
// Not supported yet
case eUBDockOrientation_Left:
default:
origin.setX(0);
origin.setY(0);
break;
}
move(origin.x(), origin.y());
}
/**
* \brief Handle the mouse enter event
* @param event as the mouse event
*/
void UBDockPalette::enterEvent(QEvent *event)
{
Q_UNUSED(event);
// We want to set the cursor as an arrow everytime it enters the palette
setCursor(Qt::ArrowCursor);
}
/**
* \brief Handle the mouse leave event
* @param event as the mouse event
*/
void UBDockPalette::leaveEvent(QEvent *event)
{
Q_UNUSED(event);
// Restore the cursor to its previous shape
unsetCursor();
}
/**
* \brief Draw the palette
* @param event as the paint event
*/
void UBDockPalette::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event);
QPainter painter(this);
painter.setRenderHint(QPainter::Antialiasing);
painter.setPen(Qt::NoPen);
painter.setBrush(mBackgroundBrush);
QPainterPath path;
path.setFillRule(Qt::WindingFill);
int nbTabs = mTabWidgets.size();
if(0 < nbTabs)
{
// First draw the BIG RECTANGLE (I write it big because the rectangle is big...)
if(mOrientation == eUBDockOrientation_Left)
{
path.addRect(0.0, 0.0, width()-2*border(), height());
}
else if(mOrientation == eUBDockOrientation_Right)
{
path.addRect(2*border(), 0.0, width()-2*border(), height());
}
// THEN DRAW THE small tabs (yes, the tabs are small...)
if(eUBDockTabOrientation_Up == mTabsOrientation)
{
mHTab = border();
}
else
{
mHTab = height() - border() - nbTabs*TABSIZE - (nbTabs-1)*tabSpacing();
}
for(int i = 0; i < mTabWidgets.size(); i++)
{
UBDockPaletteWidget* pCrntWidget = mTabWidgets.at(i);
if(NULL != pCrntWidget)
{
if(mOrientation == eUBDockOrientation_Left)
{
path.addRoundedRect(width()-4*border(), mHTab + i*TABSIZE + i*tabSpacing(), 4*border(), TABSIZE, radius(), radius());
painter.drawPath(path);
QPixmap iconPixmap;
if(mCollapseWidth >= width())
{
// Get the collapsed icon
iconPixmap = pCrntWidget->iconToRight();
}
else
{
// Get the expanded icon
iconPixmap = pCrntWidget->iconToLeft();
}
painter.drawPixmap(width() - 2*border() + 1, mHTab + i*TABSIZE + i*tabSpacing() + 1 , 2*border() - 4, TABSIZE - 2, iconPixmap);
}
else if(mOrientation == eUBDockOrientation_Right)
{
path.addRoundedRect(0.0, mHTab + i*TABSIZE + i*tabSpacing(), 4*border(), TABSIZE, radius(), radius());
painter.drawPath(path);
QPixmap iconPixmap;
if(mCollapseWidth >= width())
{
// Get the collapsed icon
iconPixmap = pCrntWidget->iconToLeft();
}
else
{
// Get the expanded icon
iconPixmap = pCrntWidget->iconToRight();
}
painter.drawPixmap(2, mHTab + i*TABSIZE + i*tabSpacing() + 1, 2*border() - 4, TABSIZE - 2, iconPixmap);
}
else
{
painter.drawRoundedRect(border(), border(), width() - 2 * border(), height() - 2 * border(), radius(), radius());
}
}
}
}
}
/**
* \brief Set the background brush
* @param brush as the given brush
*/
void UBDockPalette::setBackgroundBrush(const QBrush &brush)
{
if (mBackgroundBrush != brush)
{
mBackgroundBrush = brush;
update();
}
}
/**
* Get the border size
* @return the border size
*/
int UBDockPalette::border()
{
return 15;
}
/**
* \brief Get the radius size
* @return the radius size
*/
int UBDockPalette::radius()
{
return 5;
}
/**
* \brief Set the maximum width
*/
void UBDockPalette::updateMaxWidth()
{
// Only the inherited class will overload this method
}
/**
* \brief Get the collapse width value
* @return the collapse widht value
*/
int UBDockPalette::collapseWidth()
{
return mCollapseWidth;
}
/**
* \brief collapse/expand automatically the palette after a click on its tab
*/
void UBDockPalette::tabClicked(int tabIndex)
{
// If the current tab is not the clicked one, show its content
if(mCurrentTab != tabIndex)
{
showTabWidget(tabIndex);
}
// else collapse the palette
else
{
toggleCollapseExpand();
}
}
/**
* \brief Show the tab widget related to the given index
* @param tabIndex as the given index
*/
void UBDockPalette::showTabWidget(int tabIndex)
{
mpStackWidget->setCurrentIndex(tabIndex);
mCurrentTab = tabIndex;
// Expand it if collapsed
if(mLastWidth != -1)
{
toggleCollapseExpand();
}
// Update the current tab index
if(NULL != (dynamic_cast<UBDockPaletteWidget*>(mpStackWidget->widget(tabIndex)))){
mCrntTabWidget = dynamic_cast<UBDockPaletteWidget*>(mpStackWidget->widget(tabIndex))->name();
}
}
/**
* \brief Toggle the collapse / expand state
*/
void UBDockPalette::toggleCollapseExpand()
{
if(mLastWidth == -1)
{
// The palette must be collapsed
mLastWidth = width();
resize(2*border(), height());
}
else
{
// The palette will be expanded
resize(mLastWidth, height());
mLastWidth = -1;
}
}
/**
* \brief Set the tabs orientation
* @param orientation as the given tabs orientation
*/
void UBDockPalette::setTabsOrientation(eUBDockTabOrientation orientation)
{
mTabsOrientation = orientation;
}
/**
* \brief Update the tab position regarding the toolbar position (up or down)
*/
void UBDockPalette::onToolbarPosUpdated()
{
// Get the position of the tab
if(UBSettings::settings()->appToolBarPositionedAtTop->get().toBool())
{
setTabsOrientation(eUBDockTabOrientation_Up);
}
else
{
setTabsOrientation(eUBDockTabOrientation_Down);
}
update();
}
/**
* \brief Get the custom margin
* @return the custom margin value
*/
int UBDockPalette::customMargin()
{
return 5;
}
/**
* \brief Add the given tab widget
* @param widget as the given widget
*/
void UBDockPalette::addTab(UBDockPaletteWidget *widget)
{
if(!mTabWidgets.contains(widget) && widget->visibleState())
{
widget->setVisible(true);
mTabWidgets.append(widget);
mpStackWidget->addWidget(widget);
mpStackWidget->setCurrentWidget(widget);
update();
}
}
/**
* \brief Remove the given tab
* @param widgetName as the tab widget name
*/
void UBDockPalette::removeTab(const QString &widgetName)
{
for(int i = 0; i < mTabWidgets.size(); i++)
{
UBDockPaletteWidget* pCrntWidget = mTabWidgets.at(i);
if(NULL != pCrntWidget && (pCrntWidget->name() == widgetName))
{
mpStackWidget->removeWidget(pCrntWidget);
mTabWidgets.remove(i);
pCrntWidget->hide();
update();
break;
}
}
}
/**
* \brief Handle the resize request
* @param event as the given resize request
*/
void UBDockPalette::onResizeRequest(QResizeEvent *event)
{
resizeEvent(event);
}
/**
* \brief Get the tab spacing
* @return the tab spacing
*/
int UBDockPalette::tabSpacing()
{
return 2;
}
/**
* \brief Show the given widget
* @param widgetName as the given widget name
*/
void UBDockPalette::onShowTabWidget(const QString &widgetName)
{
for(int i = 0; i < mRegisteredWidgets.size(); i++)
{
UBDockPaletteWidget* pCrntWidget = mRegisteredWidgets.at(i);
if(NULL != pCrntWidget && (pCrntWidget->name() == widgetName))
{
pCrntWidget->setVisibleState(true);
addTab(pCrntWidget);
break;
}
}
}
/**
* \brief Hide the given widget
* @param widgetName as the given widget name
*/
void UBDockPalette::onHideTabWidget(const QString &widgetName)
{
for(int i = 0; i < mRegisteredWidgets.size(); i++){
UBDockPaletteWidget* pCrntWidget = mRegisteredWidgets.at(i);
if(NULL != pCrntWidget && (pCrntWidget->name() == widgetName)){
pCrntWidget->setVisibleState(false);
break;
}
}
removeTab(widgetName);
}
/**
* \brief Connect the show / hide signals of the widget related to this dock palette
*/
void UBDockPalette::connectSignals()
{
for(int i=0; i < mRegisteredWidgets.size(); i++)
{
connect(mRegisteredWidgets.at(i), SIGNAL(showTab(QString)), this, SLOT(onShowTabWidget(QString)));
connect(mRegisteredWidgets.at(i), SIGNAL(hideTab(QString)), this, SLOT(onHideTabWidget(QString)));
}
}
/**
* \brief Register the given widget
* @param widget as the given widget
*/
void UBDockPalette::registerWidget(UBDockPaletteWidget *widget)
{
if(!mRegisteredWidgets.contains(widget))
{
// Update the parent of this widget
widget->setParent(this);
mRegisteredWidgets.append(widget);
// By default, the widget is hidden
widget->hide();
}
}
/**
* \brief Handles the 'all download finished' notification
*/
void UBDockPalette::onAllDownloadsFinished()
{
for(int i=0; i<mTabWidgets.size(); i++){
UBDockPaletteWidget* pW = mTabWidgets.at(i);
if(NULL != pW && mCrntTabWidget == pW->name()){
mpStackWidget->setCurrentWidget(pW);
}
}
}