widgetselection.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
// Qt-Security score:significant reason:default
 
#ifndef WIDGETSELECTION_H
#define WIDGETSELECTION_H
 
#include "formeditor_global.h"
#include <invisible_widget_p.h>
 
#include <QtCore/qhash.h>
#include <QtCore/qpointer.h>
 
QT_BEGIN_NAMESPACE
 
class QDesignerFormEditorInterface;
class QMouseEvent;
class QPaintEvent;
 
namespace qdesigner_internal {
 
class FormWindow;
class WidgetSelection;
 
class QT_FORMEDITOR_EXPORT WidgetHandle: public InvisibleWidget
{
    Q_OBJECT
public:
    enum Type
    {
        LeftTop,
        Top,
        RightTop,
        Right,
        RightBottom,
        Bottom,
        LeftBottom,
        Left,
 
        TypeCount
    };
 
    WidgetHandle(FormWindow *parent, Type t, WidgetSelection *s);
    void setWidget(QWidget *w);
    void setActive(bool a);
    void updateCursor();
 
    void setEnabled(bool) {}
 
    QDesignerFormEditorInterface *core() const;
 
protected:
    void paintEvent(QPaintEvent *e) override;
    void mousePressEvent(QMouseEvent *e) override;
    void mouseMoveEvent(QMouseEvent *e) override;
    void mouseReleaseEvent(QMouseEvent *e) override;
 
private:
    void changeGridLayoutItemSpan();
    void changeFormLayoutItemSpan();
    void trySetGeometry(QWidget *w, int x, int y, int width, int height);
    void tryResize(QWidget *w, int width, int height);
 
private:
    QWidget *m_widget;
    const Type m_type;
    QPoint m_origPressPos;
    FormWindow *m_formWindow;
    WidgetSelection *m_sel;
    QRect m_geom, m_origGeom;
    bool m_active;
};
 
class QT_FORMEDITOR_EXPORT WidgetSelection: public QObject
{
    Q_OBJECT
public:
    WidgetSelection(FormWindow *parent);
 
    void setWidget(QWidget *w);
    bool isUsed() const;
 
    void updateActive();
    void updateGeometry();
    void hide();
    void show();
    void update();
 
    QWidget *widget() const;
 
    QDesignerFormEditorInterface *core() const;
 
    bool eventFilter(QObject *object, QEvent *event) override;
 
    enum  WidgetState { UnlaidOut, LaidOut, ManagedGridLayout, ManagedFormLayout };
    static WidgetState widgetState(const QDesignerFormEditorInterface *core, QWidget *w);
 
private:
    WidgetHandle *m_handles[WidgetHandle::TypeCount];
    QPointer<QWidget> m_widget;
    FormWindow *m_formWindow;
};
 
}  // namespace qdesigner_internal
 
QT_END_NAMESPACE
 
#endif // WIDGETSELECTION_H