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**
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#ifndef QTABBAR_P_H
#define QTABBAR_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include "qtabbar.h"
#include "private/qwidget_p.h"
#include <qicon.h>
#include <qtoolbutton.h>
#include <qdebug.h>
#include <qvariantanimation.h>
#define ANIMATION_DURATION 250
#include <qstyleoption.h>
QT_REQUIRE_CONFIG(tabbar);
QT_BEGIN_NAMESPACE
class QMovableTabWidget : public QWidget
{
public:
explicit QMovableTabWidget(QWidget *parent = Q_NULLPTR);
void setPixmap(const QPixmap &pixmap);
protected:
void paintEvent(QPaintEvent *e) Q_DECL_OVERRIDE;
private:
QPixmap m_pixmap;
};
class QTabBarPrivate : public QWidgetPrivate
{
Q_DECLARE_PUBLIC(QTabBar)
public:
QTabBarPrivate()
:currentIndex(-1), pressedIndex(-1), shape(QTabBar::RoundedNorth), layoutDirty(false),
drawBase(true), scrollOffset(0), hoverIndex(-1), elideModeSetByUser(false), useScrollButtonsSetByUser(false), expanding(true), closeButtonOnTabs(false),
selectionBehaviorOnRemove(QTabBar::SelectRightTab), paintWithOffsets(true), movable(false),
dragInProgress(false), documentMode(false), autoHide(false), changeCurrentOnDrag(false),
switchTabCurrentIndex(-1), switchTabTimerId(0), movingTab(0)
#if 0 // Used to be included in Qt4 for Q_WS_MAC
, previousPressedIndex(-1)
#endif
{}
int currentIndex;
int pressedIndex;
QTabBar::Shape shape;
bool layoutDirty;
bool drawBase;
int scrollOffset;
struct Tab {
inline Tab(const QIcon &ico, const QString &txt)
: enabled(true) , shortcutId(0), text(txt), icon(ico),
leftWidget(0), rightWidget(0), lastTab(-1), dragOffset(0)
#ifndef QT_NO_ANIMATION
, animation(0)
#endif //QT_NO_ANIMATION
{}
bool operator==(const Tab &other) const { return &other == this; }
bool enabled;
int shortcutId;
QString text;
#ifndef QT_NO_TOOLTIP
QString toolTip;
#endif
#if QT_CONFIG(whatsthis)
QString whatsThis;
#endif
QIcon icon;
QRect rect;
QRect minRect;
QRect maxRect;
QColor textColor;
QVariant data;
QWidget *leftWidget;
QWidget *rightWidget;
int lastTab;
int dragOffset;
#ifndef QT_NO_ACCESSIBILITY
QString accessibleName;
#endif
#ifndef QT_NO_ANIMATION
~Tab() { delete animation; }
struct TabBarAnimation : public QVariantAnimation {
TabBarAnimation(Tab *t, QTabBarPrivate *_priv) : tab(t), priv(_priv)
{ setEasingCurve(QEasingCurve::InOutQuad); }
void updateCurrentValue(const QVariant ¤t) Q_DECL_OVERRIDE;
void updateState(State, State newState) Q_DECL_OVERRIDE;
private:
//these are needed for the callbacks
Tab *tab;
QTabBarPrivate *priv;
} *animation;
void startAnimation(QTabBarPrivate *priv, int duration) {
if (!priv->isAnimated()) {
priv->moveTabFinished(priv->tabList.indexOf(*this));
return;
}
if (!animation)
animation = new TabBarAnimation(this, priv);
animation->setStartValue(dragOffset);
animation->setEndValue(0);
animation->setDuration(duration);
animation->start();
}
#else
void startAnimation(QTabBarPrivate *priv, int duration)
{ Q_UNUSED(duration); priv->moveTabFinished(priv->tabList.indexOf(*this)); }
#endif //QT_NO_ANIMATION
};
QList<Tab> tabList;
mutable QHash<QString, QSize> textSizes;
int calculateNewPosition(int from, int to, int index) const;
void slide(int from, int to);
void init();
Tab *at(int index);
const Tab *at(int index) const;
int indexAtPos(const QPoint &p) const;
inline bool isAnimated() const { Q_Q(const QTabBar); return q->style()->styleHint(QStyle::SH_Widget_Animate, 0, q); }
inline bool validIndex(int index) const { return index >= 0 && index < tabList.count(); }
void setCurrentNextEnabledIndex(int offset);
QToolButton* rightB; // right or bottom
QToolButton* leftB; // left or top
void _q_scrollTabs();
void _q_closeTab();
void moveTab(int index, int offset);
void moveTabFinished(int index);
QRect hoverRect;
int hoverIndex;
void refresh();
void layoutTabs();
void layoutWidgets(int start = 0);
void layoutTab(int index);
void updateMacBorderMetrics();
bool isTabInMacUnifiedToolbarArea() const;
void setupMovableTab();
void autoHideTabs();
QRect normalizedScrollRect(int index = -1);
int hoveredTabIndex() const;
void initBasicStyleOption(QStyleOptionTab *option, int tabIndex) const;
void makeVisible(int index);
QSize iconSize;
Qt::TextElideMode elideMode;
bool elideModeSetByUser;
bool useScrollButtons;
bool useScrollButtonsSetByUser;
bool expanding;
bool closeButtonOnTabs;
QTabBar::SelectionBehavior selectionBehaviorOnRemove;
QPoint dragStartPosition;
bool paintWithOffsets;
bool movable;
bool dragInProgress;
bool documentMode;
bool autoHide;
bool changeCurrentOnDrag;
int switchTabCurrentIndex;
int switchTabTimerId;
QMovableTabWidget *movingTab;
#if 0 // Used to be included in Qt4 for Q_WS_MAC
int previousPressedIndex;
#endif
// shared by tabwidget and qtabbar
static void initStyleBaseOption(QStyleOptionTabBarBase *optTabBase, QTabBar *tabbar, QSize size)
{
QStyleOptionTab tabOverlap;
tabOverlap.shape = tabbar->shape();
int overlap = tabbar->style()->pixelMetric(QStyle::PM_TabBarBaseOverlap, &tabOverlap, tabbar);
QWidget *theParent = tabbar->parentWidget();
optTabBase->init(tabbar);
optTabBase->shape = tabbar->shape();
optTabBase->documentMode = tabbar->documentMode();
if (theParent && overlap > 0) {
QRect rect;
switch (tabOverlap.shape) {
case QTabBar::RoundedNorth:
case QTabBar::TriangularNorth:
rect.setRect(0, size.height()-overlap, size.width(), overlap);
break;
case QTabBar::RoundedSouth:
case QTabBar::TriangularSouth:
rect.setRect(0, 0, size.width(), overlap);
break;
case QTabBar::RoundedEast:
case QTabBar::TriangularEast:
rect.setRect(0, 0, overlap, size.height());
break;
case QTabBar::RoundedWest:
case QTabBar::TriangularWest:
rect.setRect(size.width() - overlap, 0, overlap, size.height());
break;
}
optTabBase->rect = rect;
}
}
void killSwitchTabTimer();
};
class CloseButton : public QAbstractButton
{
Q_OBJECT
public:
explicit CloseButton(QWidget *parent = 0);
QSize sizeHint() const Q_DECL_OVERRIDE;
QSize minimumSizeHint() const Q_DECL_OVERRIDE
{ return sizeHint(); }
void enterEvent(QEvent *event) Q_DECL_OVERRIDE;
void leaveEvent(QEvent *event) Q_DECL_OVERRIDE;
void paintEvent(QPaintEvent *event) Q_DECL_OVERRIDE;
};
QT_END_NAMESPACE
#endif