592 lines
21 KiB
C++
592 lines
21 KiB
C++
/**
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* @file PaiTabWidget.cpp
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* @date 2011-07-19
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*/
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#include <QApplication>
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#include <QStyle>
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#include <QPainter>
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#include <QStyleOption>
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#include <QMouseEvent>
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#include <QByteArray>
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#include <QDataStream>
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#include <QToolTip>
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#include <QStylePainter>
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#include <QDrag>
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#include <QMimeData>
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#include "PaiTabWidget.h"
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#include "PaiWorkspace.h"
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// #include "Log.h"
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#include "PaiWindow.h"
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#include "GlobalUtility.h"
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using namespace pai::gui;
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void pai::gui::Serialize(const DragState & dragState, QByteArray & blob)
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{
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QDataStream stream(&blob, QIODevice::WriteOnly);
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stream << QString("PAIDragState:"); // 二进制识别头
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stream << dragState.isValid;
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stream << dragState.isDragging;
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stream << reinterpret_cast< qint64 > (dragState.pDraggingWidget);
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stream << dragState.tabIcon;
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stream << dragState.tabText;
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stream << dragState.pressPosition;
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stream << dragState.srcRect;
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stream << dragState.appPid;
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}
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void pai::gui::Unserialize(DragState & dragState, QByteArray & blob)
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{
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QDataStream stream(&blob, QIODevice::ReadOnly);
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QString strIdent;
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stream >> strIdent;
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if(strIdent != "PAIDragState:") // 二进制识别头验证
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{
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// pai::log::Debug(_FLF(QObject::tr("Unrecognized dragging state!").toStdString()));
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return;
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}
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stream >> dragState.isValid;
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stream >> dragState.isDragging;
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qint64 pointer;
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stream >> pointer;
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dragState.pDraggingWidget = reinterpret_cast< QWidget* > (pointer);
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stream >> dragState.tabIcon;
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stream >> dragState.tabText;
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stream >> dragState.pressPosition;
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stream >> dragState.srcRect;
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stream >> dragState.appPid;
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}
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PaiInfoTabBar::PaiInfoTabBar(QWidget *pParent, bool isSubTabBar, SelectionBehavior behavior) :
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QTabBar(pParent),
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m_draggable(true),
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m_OutOfConsoleTimer(0)
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{
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setFocusPolicy(Qt::StrongFocus); // 保证LineEdit的editingFinished先执行
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setMouseTracking(true);
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setElideMode(Qt::ElideRight);
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InitDragState(); // 由于setMouseTracking为true,所以mouseMoveEvent会无条件进入，需要对该结构初始化
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m_IsSubTabwidget = isSubTabBar;
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setProperty("isSubTabBar", isSubTabBar);
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setSelectionBehaviorOnRemove(behavior);
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}
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void PaiInfoTabBar::SetDraggable(bool draggable)
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{
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m_draggable = draggable;
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}
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//该重绘函数主要解决在未拖动的情况的绘制，其中style sheet中
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//margin: 0px 0px 1px 5px; padding-right:0px; padding-left:5px;必需设置，
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//否则因系统会因为大约5像素的偏差而导致文字的...(elide)被设置错误，在拖动的情况下则完全由QSS来决定。
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void PaiInfoTabBar::paintEvent(QPaintEvent *pEvent)
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{
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QTabBar::paintEvent(pEvent);
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QLinearGradient normalLG(QPointF(0, 0), QPointF(0, height()));
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QLinearGradient selectedLG(QPointF(0, 0), QPointF(0, height()));
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QLinearGradient hoverLG(QPointF(0, 0), QPointF(0, height()));
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QLinearGradient shLG(QPointF(0, 0), QPointF(0, height()));
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if(m_IsSubTabwidget)
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{
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normalLG.setColorAt(1.0, QColor("#D6E4F3"));
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selectedLG.setColorAt(0.0, QColor("#E7F0F8"));
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selectedLG.setColorAt(1.0, QColor("#FFFFFF"));
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hoverLG.setColorAt(1.0, QColor("#F2F7FB"));
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shLG.setColorAt(1.00, QColor("#F2F7FB"));
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}
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else
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{
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normalLG.setColorAt(0.0, QColor("#ECF3FC"));
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normalLG.setColorAt(1.0, QColor("#DFEAF9"));
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selectedLG.setColorAt(0.0, QColor("#FEF6D1"));
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selectedLG.setColorAt(1.0, QColor("#FDE88C"));
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hoverLG.setColorAt(0.0, QColor("#FFFFFF"));
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hoverLG.setColorAt(1.0, QColor("#E1ECFA"));
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shLG.setColorAt(0.00, QColor("#FFFBEB"));
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shLG.setColorAt(0.49, QColor("#FEF7D8"));
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shLG.setColorAt(0.50, QColor("#FEF4C2"));
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shLG.setColorAt(1.00, QColor("#FDEB99"));
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}
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QLinearGradient grayLG(QPointF(0, 0), QPointF(0, height()));
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grayLG.setColorAt(0.0, QColor("#E8F1F9"));
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grayLG.setColorAt(1.0, QColor("#E8F1F9"));
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QLinearGradient errorLG(QPointF(0, 0), QPointF(0, height()));
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errorLG.setColorAt(0.0, QColor(255, 255, 255));
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errorLG.setColorAt(1.0, QColor(255, 0, 0));
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QPainter painter(this);
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for(int i = 0; i < count(); i++)
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{
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QStyleOptionTab opt;
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initStyleOption(&opt, i);
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QRect rt = opt.rect.adjusted(0, 0, -2, 0); // tab 页之间预留2像素间距
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QRect contentRect = rt.adjusted(5, 0, tabsClosable() ? -15 : -5, 0); // 内容区 margin-left:5px, margin-right:15px，因右侧有关闭按钮
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painter.setPen(QColor("#677B8E"));
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if(opt.text == "Error") // 错误模式
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{
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painter.setBrush(QBrush(errorLG));
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}
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else if((opt.state & QStyle::State_Selected) && (opt.state & QStyle::State_MouseOver)) // 选中并且鼠标在上面
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{
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painter.setBrush(QBrush(shLG));
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}
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else if(opt.state & QStyle::State_Selected) // 仅仅选中
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{
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painter.setBrush(QBrush(selectedLG));
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}
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else if(opt.state & QStyle::State_MouseOver) // 鼠标在上面，没有选中
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{
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painter.setBrush(QBrush(hoverLG));
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}
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else // 其它情况
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{
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painter.setBrush(QBrush(normalLG));
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}
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if(!isTabEnabled(i))
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{
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painter.setBrush(QBrush(grayLG));
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}
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if((opt.shape == QTabBar::RoundedNorth) || (opt.shape == QTabBar::TriangularNorth)) // 页签在上面
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{
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painter.drawRoundedRect(rt.adjusted(0, 0, 0, 3), 3, 3); // 矩形留3px圆角，为使底部无圆角，向下拉大3px，使下部隐藏
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}
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else if((opt.shape == QTabBar::RoundedSouth) || (opt.shape == QTabBar::TriangularSouth)) // 页签在下面
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{
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painter.drawRoundedRect(rt.adjusted(0, -3, 0, -1), 3, 3); // 矩形留3px圆角，为使顶部无圆角，向下拉大3px，使顶部隐藏，为了保证矩形底部直线可以显示向下移动1px
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}
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else
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{
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painter.drawRect(rt); // 其它情况
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}
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if(opt.icon.isNull()) // 没有图标
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{
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QString text = opt.fontMetrics.elidedText(opt.text, Qt::ElideRight, contentRect.width());
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if(isTabEnabled(i))
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{
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painter.setPen(QColor(Qt::black));
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}
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painter.drawText(contentRect, Qt::AlignLeft | Qt::AlignVCenter, text);
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}
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else // 有图标
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{
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QString text = opt.fontMetrics.elidedText(opt.text, Qt::ElideRight, contentRect.width() - 20);
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if(isTabEnabled(i))
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{
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painter.setPen(QColor(Qt::black));
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}
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painter.drawText(contentRect.adjusted(20, 0, 0, 0), Qt::AlignLeft | Qt::AlignVCenter, text); // 有图标时左侧预留20像素绘制图标
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tabIcon(i).paint(&painter, contentRect, Qt::AlignLeft | Qt::AlignVCenter);
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}
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}
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}
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void PaiInfoTabBar::InitDragState()
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{
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m_DragState.appPid = QCoreApplication::applicationPid();
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m_DragState.isValid = false;
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m_DragState.isDragging = false;
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m_DragState.pDraggingWidget = NULL;
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m_DragState.tabIcon = QIcon();
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m_DragState.tabText = "";
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m_DragState.pressPosition = QPoint(0, 0);
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}
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bool PaiInfoTabBar::IsDraggable() const
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{
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if(!m_draggable)
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{
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return false;
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}
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return ((NULL != GetFirstParentObject< pai::gui::PaiWorkspace > (const_cast< PaiInfoTabBar* > (this)))
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&& tabsClosable());
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}
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void PaiInfoTabBar::mousePressEvent(QMouseEvent *pEvent)
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{
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InitDragState();
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if(pEvent->button() == Qt::LeftButton)
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{
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if(IsDraggable())
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{
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for(int i = 0; i < count(); ++i)
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{
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if(tabButton(i, RightSide) != NULL)
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{
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// 禁止从关闭按钮上发起拖拽
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if(tabButton(i, RightSide)->geometry().contains(pEvent->pos()))
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{
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break;
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}
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}
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if(tabRect(i).contains(pEvent->pos()))
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{
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QTabWidget *pTabWidget = dynamic_cast< QTabWidget* > (parentWidget());
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if(pTabWidget != NULL)
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{
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m_DragState.pDraggingWidget = pTabWidget->widget(i);
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m_DragState.tabIcon = tabIcon(i);
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m_DragState.tabText = tabText(i);
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}
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break;
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}
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}
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if(m_DragState.pDraggingWidget != NULL)
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{
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m_DragState.isValid = true;
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m_DragState.pressPosition = pEvent->pos();
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}
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}
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}
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QTabBar::mousePressEvent(pEvent);
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}
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void PaiInfoTabBar::mouseMoveEvent(QMouseEvent *pEvent)
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{
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if(m_DragState.isValid)
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{
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QPoint pos = (pEvent->pos() - m_DragState.pressPosition);
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//只有在以下条件满足时才修改拖拽状态，视为拖拽开始
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//1.本身还未记录为拖拽状态
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//2.鼠标按压状态下移动的布线长度大于系统设定的拖拽起始长度
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//3.鼠标拖动轨迹大于30度角（0.71约为30度角的直角边长之比），如果
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// 小于30度则认为其是移动页签而不是拖拽页签。（注*:如果取消这个条
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// 件，在小角度快速频繁按压移动鼠标时会误认为是拖拽，造成绘制混乱）
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if((!m_DragState.isDragging)
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&& (pos.manhattanLength() > QApplication::startDragDistance())
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&& (qAbs(pos.y()) / (float) qAbs(pos.x())) > 0.71)
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{
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m_DragState.isDragging = true;
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m_DragState.srcRect = parentWidget()->geometry();
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}
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if(m_DragState.isDragging)
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{
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if(!MapToGlobal(this, rect()).contains(pEvent->globalPos()))
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{
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QDrag *pDrag = new QDrag(this);
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QPixmap pixmap(m_DragState.srcRect.size());
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pixmap.fill(QColor(0, 0, 0, 0));
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QStylePainter p(&pixmap, this);
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QStyleOptionTabV3 tab;
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initStyleOption(&tab, this->currentIndex());
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p.drawControl(QStyle::CE_TabBarTab, tab);
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m_DragState.pDraggingWidget->render(&pixmap, QPoint(0, this->height()));
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pDrag->setPixmap(pixmap);
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pDrag->setHotSpot(QPoint(rect().width() / 2, rect().height() / 2));
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QMimeData *pMimeData = new QMimeData;
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QByteArray blob;
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Serialize(m_DragState, blob);
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pMimeData->setData("text/csv", blob);
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pDrag->setMimeData(pMimeData);
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killTimer(m_OutOfConsoleTimer);
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m_OutOfConsoleTimer = startTimer(150);
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Qt::DropAction eDropAction = pDrag->exec(Qt::MoveAction | Qt::IgnoreAction, Qt::IgnoreAction);
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killTimer(m_OutOfConsoleTimer);
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qApp->restoreOverrideCursor();
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// Note:为拖拽到类似firefox的页面的情况做特殊处理，当拖拽到firefox页面上时，底层返回Action认为是MoveAction，这时的targe返回为空
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// 如果是拖拽到前面拖出的窗口中，返回的targe会是一个PaiWorkspace。
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if(((eDropAction == Qt::IgnoreAction)
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&& !window()->geometry().contains(QCursor::pos()))
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|| ((eDropAction == Qt::MoveAction)
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&& (pDrag->target() == NULL)
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&& !window()->geometry().contains(QCursor::pos())))
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{
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PaiTabWidget *pTabWidget = dynamic_cast< PaiTabWidget* > (parentWidget());
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if(pTabWidget != NULL)
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{
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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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int iDraggingIndex = pTabWidget->indexOf(m_DragState.pDraggingWidget);
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QIcon icon = tabIcon(iDraggingIndex);
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QString text = tabText(iDraggingIndex);
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PaiWindow *pParent = GetLastParentObject< PaiWindow > (this);
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PaiWindow *pNewWindow = new PaiWindow(pParent);
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pai::gui::PaiWorkspace::RemoveViewFromTabWidget(m_DragState.pDraggingWidget, pTabWidget);
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pai::gui::PaiWorkspace *pNewWorkspace = new pai::gui::PaiWorkspace(pNewWindow);
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connect(pNewWorkspace, SIGNAL(SubtitleChanged()), pParent, SLOT(RefreshWindowTitle()));
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pNewWorkspace->setAttribute(Qt::WA_DeleteOnClose);
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pNewWorkspace->setWindowIcon(QIcon(":/Logo.png"));
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if(!m_DragState.srcRect.isValid())
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{
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return;
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}
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// 将拖拽的页签添加到拖出来的新窗口
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pNewWorkspace->AddWidget("#", m_DragState.pDraggingWidget, text, icon);
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pNewWindow->setAttribute(Qt::WA_DeleteOnClose);
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pNewWindow->setGeometry(QCursor::pos().x() - m_DragState.srcRect.width() / 2,
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QCursor::pos().y() - 5,
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m_DragState.srcRect.width(),
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m_DragState.srcRect.height());
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QHBoxLayout *pNewWindowLayout = new QHBoxLayout(pNewWindow->GetContainer());
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pNewWindowLayout->setContentsMargins(0, 5, 0, 0);
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pNewWindowLayout->addWidget(pNewWorkspace);
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pNewWindow->setVisible(true);
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pNewWindow->raise();
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InitDragState();
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pEvent->ignore();
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return;
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}
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}
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else
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{
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// 由于拖拽的页面可能落在其他地方，所以拖拽源需要刷新一下
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parentWidget()->repaint();
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// 由于拖拽功能劫持了页签的移动位置过程，下面让移动了的页签复位
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QMouseEvent fake(QEvent::MouseButtonPress,
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m_DragState.pressPosition,
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mapToGlobal(m_DragState.pressPosition),
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Qt::LeftButton,
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QApplication::mouseButtons(),
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QApplication::keyboardModifiers());
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QTabBar::mousePressEvent(&fake);
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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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QTabBar::mouseMoveEvent(pEvent);
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}
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void PaiInfoTabBar::mouseReleaseEvent(QMouseEvent *pEvent)
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{
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InitDragState();
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QTabBar::mouseReleaseEvent(pEvent);
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}
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bool PaiInfoTabBar::event(QEvent *pEvent)
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{
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if(pEvent->type() == QEvent::ToolTip)
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{
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QHelpEvent *pHelpEvent = static_cast< QHelpEvent * > (pEvent);
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int index = tabAt(pHelpEvent->pos());
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if(index != -1)
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{
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QString text = tabText(index);
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// 如果文本的长度+关闭按钮的宽度大于页签宽度,则以tooltip形式将文本显示全
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int widthText = 0;
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int widthButton = 0;
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if(!text.isNull() && !text.isEmpty())
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{
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widthText = fontMetrics().width(text);
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}
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if(tabButton(index, RightSide) != NULL)
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{
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widthButton = tabButton(index, RightSide)->width();
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}
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if((widthText + widthButton) > tabRect(index).width())
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{
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QToolTip::showText(pHelpEvent->globalPos(), text);
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return true;
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}
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}
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QToolTip::hideText();
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pEvent->ignore();
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return true;
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}
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return QTabBar::event(pEvent);
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}
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void PaiInfoTabBar::timerEvent(QTimerEvent *pEvent)
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{
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if(pEvent->timerId() == m_OutOfConsoleTimer)
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{
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QList< QWidget* > lstHiddenPaiWindow;
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foreach (QWidget *pWidget, QApplication::topLevelWidgets())
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{
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if(dynamic_cast< pai::gui::PaiWindow* > (pWidget))
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{
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if(pWidget->isHidden())
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{
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lstHiddenPaiWindow << pWidget;
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continue;
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}
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if(pWidget->geometry().contains(QCursor::pos()))
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{
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if(qApp->overrideCursor() == NULL)
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{
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qApp->setOverrideCursor(Qt::ArrowCursor);//拖到PaiWindow上则复原光标重载的功能
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}
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return;
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}
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}
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}
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for(int i = lstHiddenPaiWindow.size() - 1; i >= 0; --i)
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{
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delete lstHiddenPaiWindow[i];//ToDo 暂时在这里消除PaiWorkspace::OnAllTabRemoved函数中的close不能销毁PaiWindow实例的缺陷
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lstHiddenPaiWindow[i] = NULL;
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}
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while(qApp->overrideCursor() != NULL)
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{
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qApp->restoreOverrideCursor();//拖到外面的情况下去掉光标重载
|
||
}
|
||
}
|
||
}
|
||
|
||
PaiTabWidget::PaiTabWidget(QWidget *pParent,
|
||
bool isSubTabBar,
|
||
QTabBar::SelectionBehavior behavior) :
|
||
QTabWidget(pParent),
|
||
m_IsDropableTab(true)
|
||
{
|
||
setTabBar(new PaiInfoTabBar(this, isSubTabBar, behavior));
|
||
setTabsClosable(true);
|
||
setMovable(true);
|
||
connect(this, SIGNAL(tabCloseRequested(int)), SLOT(OnTabClose(int)));
|
||
connect(this, SIGNAL(currentChanged(int)), SLOT(OnCurrentChanged(int)));
|
||
}
|
||
|
||
void PaiTabWidget::CloseTab(int index)
|
||
{
|
||
emit tabCloseRequested(index);
|
||
}
|
||
void PaiTabWidget::CloseAll()
|
||
{
|
||
for(int i = count() - 1; i >= 0; --i)
|
||
{
|
||
emit tabCloseRequested(i);
|
||
}
|
||
}
|
||
|
||
void PaiTabWidget::SetTabVisible(bool visible)
|
||
{
|
||
tabBar()->setVisible(visible);
|
||
}
|
||
|
||
void PaiTabWidget::OnTabClose(int index)
|
||
{
|
||
QWidget *pTabPage = widget(index);
|
||
if(!pTabPage)
|
||
{
|
||
return;
|
||
}
|
||
|
||
bool deleteOnClose = true;
|
||
if(pTabPage->property("IsDeleteOnClose").isValid())
|
||
{
|
||
deleteOnClose = pTabPage->property("IsDeleteOnClose").toBool();
|
||
}
|
||
QVariant varExtensionID = pTabPage->property("ExtensionID");
|
||
QString extensionID = varExtensionID.isValid() ? varExtensionID.toString() : QString::number(index);
|
||
AcceptClosing_P(this);
|
||
emit TabWillBeClosed(extensionID); // 该功能的正常使用，是利用在主进程中信号即关联的槽函数是顺序执行的
|
||
if(!IsCloseable(this))
|
||
{
|
||
return;
|
||
}
|
||
if(widget(index) == pTabPage)
|
||
{
|
||
if(deleteOnClose)
|
||
{
|
||
removeTab(index);
|
||
pTabPage->deleteLater();
|
||
}
|
||
else
|
||
{
|
||
removeTab(index);
|
||
|
||
// 目前所有不允许析构的页面都是PageService下的辅助页面，
|
||
// 此时由PageService::CloseExtraViewExtensions()释放pTabPage
|
||
pTabPage->setParent(NULL);
|
||
}
|
||
}
|
||
m_ClosedTabID = extensionID;
|
||
}
|
||
|
||
void PaiTabWidget::OnCurrentChanged(int index)
|
||
{
|
||
QWidget *pTabPage = this->widget(index);
|
||
if(pTabPage != NULL)
|
||
{
|
||
QVariant varExtensionID = pTabPage->property("ExtensionID");
|
||
QString extensionID = varExtensionID.isValid() ? varExtensionID.toString() : QString::number(index);
|
||
emit CurrentTabChanged(extensionID);
|
||
}
|
||
}
|
||
|
||
void PaiTabWidget::tabInserted(int index)
|
||
{
|
||
QTabWidget::tabInserted(index);
|
||
|
||
emit TabInserted(index);//发出一个Tab被添加的消息
|
||
}
|
||
void PaiTabWidget::tabRemoved(int index)
|
||
{
|
||
QTabWidget::tabRemoved(index);
|
||
if(0 == count())
|
||
{
|
||
QString areaName = this->property("AreaName").toString();
|
||
emit AllTabClosed(areaName);//发出最后一个Tab被移除的消息
|
||
}
|
||
if(!m_ClosedTabID.isEmpty())
|
||
{
|
||
emit TabRemoved(m_ClosedTabID);
|
||
m_ClosedTabID = "";
|
||
}
|
||
}
|
||
void PaiTabWidget::paintEvent(QPaintEvent *pEvent)
|
||
{
|
||
if(count() == 0)
|
||
{
|
||
QPainter p(this);
|
||
p.fillRect(pEvent->rect(), QBrush(QColor("#829BB5")));
|
||
}
|
||
else
|
||
{
|
||
QTabWidget::paintEvent(pEvent);
|
||
}
|
||
}
|
||
|
||
bool PaiTabWidget::eventFilter(QObject *pObj, QEvent *pEvent)
|
||
{
|
||
if((pEvent->type() == QEvent::DragEnter) || (pEvent->type() == QEvent::DragMove) || (pEvent->type() == QEvent::Drop))
|
||
{
|
||
pEvent->ignore();//ToDo 由于QWebView的拖拽功能和PAI系统拖拽页签不兼容，暂时将页签中的QWebView的拖拽功能禁止掉
|
||
return true;
|
||
}
|
||
else
|
||
{
|
||
return QTabWidget::eventFilter(pObj, pEvent);
|
||
}
|
||
}
|
||
|
||
void PaiTabWidget::SetDropable(bool dropable)
|
||
{
|
||
m_IsDropableTab = dropable;
|
||
}
|
||
|
||
bool PaiTabWidget::IsDropable()
|
||
{
|
||
return m_IsDropableTab;
|
||
}
|
||
|
||
void PaiTabWidget::SetTabBarDraggable(bool draggable)
|
||
{
|
||
PaiInfoTabBar *pTabBar = qobject_cast< PaiInfoTabBar* > (tabBar());
|
||
if(pTabBar)
|
||
{
|
||
pTabBar->SetDraggable(draggable);
|
||
}
|
||
}
|