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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QSPLITTER_P_H
#define QSPLITTER_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 "private/qframe_p.h"
QT_REQUIRE_CONFIG(splitter);
QT_BEGIN_NAMESPACE
static const uint Default = 2;
class QSplitterLayoutStruct
{
public:
QRect rect;
int sizer;
uint collapsed : 1;
uint collapsible : 2;
QWidget *widget;
QSplitterHandle *handle;
QSplitterLayoutStruct() : sizer(-1), collapsed(false), collapsible(Default), widget(nullptr), handle(nullptr) {}
~QSplitterLayoutStruct() { delete handle; }
int getWidgetSize(Qt::Orientation orient);
int getHandleSize(Qt::Orientation orient);
int pick(const QSize &size, Qt::Orientation orient)
{ return (orient == Qt::Horizontal) ? size.width() : size.height(); }
};
class QSplitterPrivate : public QFramePrivate
{
Q_DECLARE_PUBLIC(QSplitter)
public:
QSplitterPrivate() :
#if QT_CONFIG(rubberband)
rubberBand(nullptr),
#endif
opaque(true), firstShow(true),
childrenCollapsible(true), compatMode(false), handleWidth(-1), blockChildAdd(false), opaqueResizeSet(false) {}
~QSplitterPrivate();
#if QT_CONFIG(rubberband)
QPointer<QRubberBand> rubberBand;
#endif
mutable QList<QSplitterLayoutStruct *> list;
Qt::Orientation orient;
bool opaque : 8;
bool firstShow : 8;
bool childrenCollapsible : 8;
bool compatMode : 8;
int handleWidth;
bool blockChildAdd;
bool opaqueResizeSet;
inline int pick(const QPoint &pos) const
{ return orient == Qt::Horizontal ? pos.x() : pos.y(); }
inline int pick(const QSize &s) const
{ return orient == Qt::Horizontal ? s.width() : s.height(); }
inline int trans(const QPoint &pos) const
{ return orient == Qt::Vertical ? pos.x() : pos.y(); }
inline int trans(const QSize &s) const
{ return orient == Qt::Vertical ? s.width() : s.height(); }
void init();
void recalc(bool update = false);
void doResize();
void storeSizes();
void getRange(int index, int *, int *, int *, int *) const;
void addContribution(int, int *, int *, bool) const;
int adjustPos(int, int, int *, int *, int *, int *) const;
bool collapsible(QSplitterLayoutStruct *) const;
bool collapsible(int index) const
{ return (index < 0 || index >= list.size()) ? true : collapsible(list.at(index)); }
QSplitterLayoutStruct *findWidget(QWidget *) const;
void insertWidget_helper(int index, QWidget *widget, bool show);
QSplitterLayoutStruct *insertWidget(int index, QWidget *);
void doMove(bool backwards, int pos, int index, int delta,
bool mayCollapse, int *positions, int *widths);
void setGeo(QSplitterLayoutStruct *s, int pos, int size, bool allowCollapse);
int findWidgetJustBeforeOrJustAfter(int index, int delta, int &collapsibleSize) const;
void updateHandles();
void setSizes_helper(const QList<int> &sizes, bool clampNegativeSize = false);
bool shouldShowWidget(const QWidget *w) const;
};
class QSplitterHandlePrivate : public QWidgetPrivate
{
Q_DECLARE_PUBLIC(QSplitterHandle)
public:
QSplitterHandlePrivate() : s(nullptr), orient(Qt::Horizontal), mouseOffset(0), opaq(false), hover(false), pressed(false) {}
inline int pick(const QPoint &pos) const
{ return orient == Qt::Horizontal ? pos.x() : pos.y(); }
QSplitter *s;
Qt::Orientation orient;
int mouseOffset;
bool opaq : 1;
bool hover : 1;
bool pressed : 1;
};
QT_END_NAMESPACE
#endif
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