384 lines
13 KiB
C++
384 lines
13 KiB
C++
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/**
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* @file PaiWorkspace.cpp
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* @brief 该类代表一个复杂布局（支持停靠、区域拆分和页签等方式组织管理界面）的容器控件
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* @date 2012-05-07
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*/
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#include <QApplication>
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#include <QMouseEvent>
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#include <QGridLayout>
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#include <QRubberBand>
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#include <QByteArray>
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#include <QSplitter>
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#include "PaiWorkspace.h"
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#include "GlobalUtility.h"
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#include "PaiWindow.h"
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using namespace pai::gui;
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namespace pai
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{
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namespace gui
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{
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/**
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* @class PaiDropMask
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* @brief 该类以透明蒙皮加虚框的方式指示被拖拽的页签将要落下的位置
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*/
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class PAI_WIDGET_EXPORT PaiDropMask : public QRubberBand
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{
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public:
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/**
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* @brief 构造函数
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* @param[in] pWorkspace 父对象
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*/
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PaiDropMask(PaiWorkspace *pWorkspace) :
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QRubberBand(QRubberBand::Rectangle, pWorkspace)
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{
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installEventFilter(this);
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}
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protected:
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/**
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* @brief 事件Filter
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* @param[in] pObject 事件对象
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* @param[in] pEvent 事件
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* @return 事件运行结果
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*/
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bool eventFilter(QObject *pObject, QEvent *pEvent)
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{
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if(dynamic_cast< QInputEvent* > (pEvent) || dynamic_cast< QDropEvent* > (pEvent))
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{
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pEvent->ignore(); // 由父亲PaiWorkspace来接管鼠标事件和拖拽事件
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return true;
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}
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else
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{
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return QRubberBand::eventFilter(pObject, pEvent);
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}
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}
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};
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}
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}
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PaiWorkspaceExtension *PaiWorkspace::m_pWorkspaceExtension = NULL;
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PaiWorkspace::PaiWorkspace(QWidget *pParent) :
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QWidget(pParent),
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m_pDropAreaHint(new PaiDropMask(this)),
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m_pMainTabWidget(NULL)
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{
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pParent->installEventFilter(this);
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setAcceptDrops(true);
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m_pDropAreaHint->hide();
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AcceptClosing_P(this);
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}
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PaiWorkspace::~PaiWorkspace()
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{
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m_pDropAreaHint->deleteLater();
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}
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void PaiWorkspace::AddWidget(const QString & areaName, QWidget *pWidget, const QString & text, const QIcon & icon)
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{
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if(areaName == "#")
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{
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if(layout() != NULL)
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{
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return;
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}
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QGridLayout *pLayout = new QGridLayout();
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pLayout->setContentsMargins(0, 0, 0, 0);
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pLayout->setSpacing(0);
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m_pMainTabWidget = new PaiTabWidget(this);
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m_pMainTabWidget->setProperty("AreaName", areaName);
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connect(m_pMainTabWidget, SIGNAL(currentChanged(int)), this, SIGNAL(SubtitleChanged()));
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pWidget->setParent(m_pMainTabWidget);
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AddViewToTabWidget(pWidget, icon, text, m_pMainTabWidget);
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connect(m_pMainTabWidget, SIGNAL(AllTabClosed(const QString&)), this, SLOT(OnAllTabRemoved()));
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pLayout->addWidget(m_pMainTabWidget, 0, 0);
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setLayout(pLayout);
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}
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}
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void PaiWorkspace::dragEnterEvent(QDragEnterEvent *pEvent)
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{
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// QWidget::dragEnterEvent(pEvent);
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// if(pEvent->mimeData()->hasFormat("text/csv"))
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// {
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// m_DragState.isValid = false;
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// m_DragState.isDragging = false;
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// QByteArray mimeData(pEvent->mimeData()->data("text/csv"));
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// Unserialize(m_DragState, mimeData);
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// if(m_DragState.isValid && m_DragState.isDragging && (m_DragState.appPid == QCoreApplication::applicationPid()))
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// {
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// pEvent->accept();
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// }
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// }
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// else
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// {
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// pEvent->ignore();
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// }
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}
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void PaiWorkspace::dragMoveEvent(QDragMoveEvent *pEvent)
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{
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if(m_DragState.isValid && m_DragState.isDragging)
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{
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QList< QSplitter* > lstSplittes = findChildren< QSplitter* > ();
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for(int i = 0; i < lstSplittes.size(); ++i)
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{
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QSplitter *pSplitter = lstSplittes[i];
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int pos = pSplitter->sizes().indexOf(0);
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if(-1 != pos) // 找到大小被收缩为0的splitter索引
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{
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// 判断被拖动的页签将有可能被插入到splitter handle前面还是后面
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bool bInsertBeforeHandle = (pos == (pSplitter->count() - 1)) ? false : true;
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QSplitterHandle *pSplHandle = bInsertBeforeHandle ? pSplitter->handle(pos + 1) : pSplitter->handle(pos);
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if(!pSplHandle)
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{
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continue;
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}
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// 获得splitter handle区域，并计算鼠标检测区域
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QRect globalSplRect = MapToGlobal(pSplHandle, pSplHandle->rect());
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if(pSplitter->orientation() == Qt::Horizontal)
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{
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// 若为横向splitter，以splitter handle区域为基础，向左右扩展10像素
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if(bInsertBeforeHandle)
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{
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globalSplRect.setRight(globalSplRect.right() + 10);
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}
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else
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{
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globalSplRect.setLeft(globalSplRect.left() - 10);
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}
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}
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else // 若为纵向splitter，以splitter handle区域为基础，向上下扩展10像素
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{
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if(bInsertBeforeHandle)
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{
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globalSplRect.setTop(globalSplRect.top() + 10);
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}
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else
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{
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globalSplRect.setBottom(globalSplRect.bottom() - 10);
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}
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}
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// 若鼠标位置在检测区域内，则移动handle使得页签有机会被拖动到大小为0的splitter区域
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if(globalSplRect.contains(QCursor::pos()))
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{
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QList< int > lstSize = pSplitter->sizes();
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lstSize[pos] = 50;
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if(bInsertBeforeHandle) // 相邻区域相应缩小
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{
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lstSize[pos + 1] = lstSize[pos + 1] - 50;
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}
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else
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{
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lstSize[pos - 1] = lstSize[pos - 1] - 50;
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}
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pSplitter->setSizes(lstSize);
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break;
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}
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}
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}
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// 显示虚线框
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QList< QTabWidget* > lstTabWidgets = findChildren< QTabWidget* > ();
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foreach(QTabWidget *pAreaWidget, lstTabWidgets)
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{
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QRect globalAreaRect = MapToGlobal(pAreaWidget, pAreaWidget->rect());
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if(globalAreaRect.contains(QCursor::pos()) && !(m_DragState.pDraggingWidget->isAncestorOf(pAreaWidget)))
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{
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pEvent->accept();
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m_pDropAreaHint->setGeometry(MapFromGlobal(this, globalAreaRect));
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m_pDropAreaHint->show();
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return;
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}
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}
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}
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pEvent->ignore();
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}
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void PaiWorkspace::dropEvent(QDropEvent *pEvent)
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{
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// if(pEvent->mimeData()->hasFormat("text/csv"))
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// {
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// if(pEvent->source() == NULL)
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// {
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// return;
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// }
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// // 拖拽的TabWidget，pEvent>source()应为TabBar
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// PaiTabWidget *pDragTabWidget = dynamic_cast< PaiTabWidget* > (pEvent->source()->parentWidget());
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// if(m_DragState.isValid && m_DragState.isDragging && pDragTabWidget)
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// {
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// QList< PaiTabWidget* > dropTabWidgets = findChildren< PaiTabWidget* > ();
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// dropTabWidgets.removeAll(pDragTabWidget); // 排除自己
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// foreach(PaiTabWidget *pDropTabWidget, dropTabWidgets)
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// {
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// // 如果要拖拽的TabWidget托到自己的子TabWidget上，或者该TabWidget是不接收拖拽的，则忽略掉
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// if(pDragTabWidget->isAncestorOf(pDropTabWidget) || !pDropTabWidget->IsDropable())
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// {
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// continue;
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// }
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// QRect globalAreaRect = MapToGlobal(pDropTabWidget, pDropTabWidget->rect());
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// if(globalAreaRect.contains(QCursor::pos()))
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// {
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// m_pDropAreaHint->hide();
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// // 将拖拽的页签先从之前的页签区域移除
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// RemoveViewFromTabWidget(m_DragState.pDraggingWidget, pDragTabWidget);
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// // 由于拖拽页面功能违反了Qt的事件框架的预期，这里需要打个补丁来阻止Qt的后续事件
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// QApplication::removePostedEvents(pEvent->source());
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// QApplication::removePostedEvents(pDragTabWidget);
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// QApplication::removePostedEvents(pDragTabWidget->currentWidget());
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// // 将拖拽的页签插入到落点所在的页签区
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// m_DragState.pDraggingWidget->setParent(pDropTabWidget);
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// AddViewToTabWidget(m_DragState.pDraggingWidget,
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// m_DragState.tabIcon,
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// m_DragState.tabText,
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// pDropTabWidget);
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// pDropTabWidget->setCurrentWidget(m_DragState.pDraggingWidget);
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// // 由于拖拽页面功能违反了Qt的事件框架的预期，这里需要打个补丁来阻止Qt的后续事件
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// QApplication::removePostedEvents(this);
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// QApplication::removePostedEvents(pDropTabWidget);
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// QApplication::removePostedEvents(pDropTabWidget->findChild< QTabBar* > ());
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// QApplication::removePostedEvents(m_DragState.pDraggingWidget);
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// // 正确接受拖拽事件并返回
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// pEvent->setDropAction(Qt::MoveAction);
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// pEvent->accept();
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// update();
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// return;
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// }
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// }
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// }
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// }
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// m_pDropAreaHint->hide();
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// pEvent->ignore();
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}
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void PaiWorkspace::dragLeaveEvent(QDragLeaveEvent *pEvent)
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{
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m_pDropAreaHint->hide();
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QList< QTabWidget* > lstTabWidgets = findChildren< QTabWidget* > ();
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for(int i = 0; i < lstTabWidgets.size(); ++i)
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{
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QTabWidget *pTabWidget = lstTabWidgets[i];
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if(pTabWidget->count() == 0)
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{
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// 找到空TabWidget以及其父亲splitter
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QSplitter *pSplitter = qobject_cast< QSplitter* > (pTabWidget->parent());
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if(pSplitter)
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{
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int index = pSplitter->indexOf(pTabWidget);
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QList< int > lstSizes = pSplitter->sizes();
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if(lstSizes.at(index) == 0)
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{
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continue;
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}
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if(index == 0) // 恢复在拖拽页签过程中显示的空TabWidget区域
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{
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lstSizes[index + 1] = lstSizes[index + 1] + lstSizes[index];
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}
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else if(index == pSplitter->count() - 1)
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{
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lstSizes[index - 1] = lstSizes[index - 1] + lstSizes[index];
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}
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lstSizes[index] = 0;
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pSplitter->setSizes(lstSizes);
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break;
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}
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}
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}
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QWidget::dragLeaveEvent(pEvent);
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}
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void PaiWorkspace::closeEvent(QCloseEvent *pEvent)
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{
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PaiWindow *pPaiWindow = GetFirstParentObject< PaiWindow > (this);
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if(pPaiWindow && pPaiWindow->isWindow())
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{
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//PaiWorkspace中只支持一个顶级页签控件
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PaiTabWidget *pTabWidget = findChild< PaiTabWidget* > ();
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if(pTabWidget != NULL)
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{
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AcceptClosing_P(this);
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AcceptClosing_P(pTabWidget);
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pTabWidget->CloseAll();//通过发送信号关闭所有的页签，这种方式保证了如果有插件的页签关联了该信号则相关槽函数得以执行。
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if(!IsCloseable(pTabWidget))
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{
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RejectClosing_P(this);
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pEvent->ignore();
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return;
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}
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}
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}
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QWidget::closeEvent(pEvent);
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}
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bool PaiWorkspace::eventFilter(QObject *pObject, QEvent *pEvent)
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{
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if(pEvent->type() == QEvent::Close)
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{
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close();
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}
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return QObject::eventFilter(pObject, pEvent);
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}
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void PaiWorkspace::OnAllTabRemoved()
|
|||
|
|
{
|
|||
|
|
PaiWindow *pPaiWindow = GetFirstParentObject< PaiWindow > (this);
|
|||
|
|
if(pPaiWindow && pPaiWindow->isWindow())
|
|||
|
|
{
|
|||
|
|
pPaiWindow->close();
|
|||
|
|
}
|
|||
|
|
else if(isWindow())
|
|||
|
|
{
|
|||
|
|
close();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
bool PaiWorkspace::AddViewToTabWidget(QWidget *pView,
|
|||
|
|
const QIcon & icon,
|
|||
|
|
const QString& text,
|
|||
|
|
pai::gui::PaiTabWidget *pTabWidget)
|
|||
|
|
{
|
|||
|
|
if(m_pWorkspaceExtension)
|
|||
|
|
{
|
|||
|
|
return m_pWorkspaceExtension->AddViewToTabWidget(pView, icon, text, pTabWidget);
|
|||
|
|
}
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
bool PaiWorkspace::RemoveViewFromTabWidget(QWidget *pView, pai::gui::PaiTabWidget *pTabWidget)
|
|||
|
|
{
|
|||
|
|
if(m_pWorkspaceExtension)
|
|||
|
|
{
|
|||
|
|
return m_pWorkspaceExtension->RemoveViewFromTabWidget(pView, pTabWidget);
|
|||
|
|
}
|
|||
|
|
return false;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
PaiTabWidget* PaiWorkspace::GetPrimaryTabWidget() const
|
|||
|
|
{
|
|||
|
|
return m_pMainTabWidget;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
void PaiWorkspace::SetExtension(PaiWorkspaceExtension *pExtension)
|
|||
|
|
{
|
|||
|
|
if(m_pWorkspaceExtension)
|
|||
|
|
{
|
|||
|
|
delete m_pWorkspaceExtension;
|
|||
|
|
}
|
|||
|
|
m_pWorkspaceExtension = pExtension;
|
|||
|
|
}
|