95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
/*
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This file is part of KDDockWidgets.
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SPDX-FileCopyrightText: 2019-2021 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
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Author: Sérgio Martins <sergio.martins@kdab.com>
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SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
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Contact KDAB at <info@kdab.com> for commercial licensing options.
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*/
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#ifndef KD_WIDGET_RESIZE_HANDLER_P_H
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#define KD_WIDGET_RESIZE_HANDLER_P_H
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#include "QWidgetAdapter.h"
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#include "Qt5Qt6Compat_p.h"
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#include "kddockwidgets/KDDockWidgets.h"
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#include <QPoint>
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#include <QDebug>
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QT_BEGIN_NAMESPACE
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class QMouseEvent;
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QT_END_NAMESPACE
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namespace KDDockWidgets {
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class FloatingWindow;
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class WidgetResizeHandler : public QObject
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{
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Q_OBJECT
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public:
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/**
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* @brief CTOR
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* @param isTopLevelResizer If true, then this resize handler is for top-level widgets (aka windows)
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* if false, they are docked (like for example resizing docked MDI widgets, or the sidebar overlay)
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* @param target The target widget that will be resized. Also acts as parent QObject.
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*/
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explicit WidgetResizeHandler(bool isTopLevelResizer, QWidgetOrQuick *target);
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~WidgetResizeHandler() override;
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/**
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* @brief Sets the sides the user is allowed to resize with mouse.
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*
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* By default the user can resize all 4 sides.
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* However, when a dock widget is overlayed (popuped), only one side can be resized.
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*/
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void setAllowedResizeSides(CursorPositions);
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/**
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* Sets the resize gap. By default 10.
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*
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* This is only used for non-top-level (child) widgets.
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* When resizing a child widget, it will be clipped by its parent, but we leave a little space so
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* we can resize it again.
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*
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* Meaning, if you're resizing 'bottom' of the child widget, it can never be bigger than parent.geometry().bottom() - gap.
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* The gap allows you to put your mouse there and resize again.
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*/
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void setResizeGap(int);
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bool isMDI() const;
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static int widgetResizeHandlerMargin();
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#ifdef Q_OS_WIN
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static bool handleWindowsNativeEvent(FloatingWindow *w, const QByteArray &eventType, void *message, Qt5Qt6Compat::qintptr *result);
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#endif
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static bool s_disableAllHandlers;
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protected:
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bool eventFilter(QObject *o, QEvent *e) override;
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private:
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void setTarget(QWidgetOrQuick *w);
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bool mouseMoveEvent(QMouseEvent *e);
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void updateCursor(CursorPosition m);
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void setMouseCursor(Qt::CursorShape cursor);
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void restoreMouseCursor();
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CursorPosition cursorPosition(QPoint) const;
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QWidgetOrQuick *mTarget = nullptr;
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CursorPosition mCursorPos = CursorPosition_Undefined;
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QPoint mNewPosition;
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bool m_resizingInProgress = false;
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const bool m_isTopLevelWindowResizer;
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int m_resizeGap = 10;
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CursorPositions mAllowedResizeSides = CursorPosition_All;
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};
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}
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#endif
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