qplatformwindow.h

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// Copyright (C) 2017 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 QPLATFORMWINDOW_H
#define QPLATFORMWINDOW_H
 
//
//  W A R N I N G
//  -------------
//
// This file is part of the QPA API and is not meant to be used
// in applications. Usage of this API may make your code
// source and binary incompatible with future versions of Qt.
//
 
#include <QtGui/qtguiglobal.h>
#include <QtCore/qscopedpointer.h>
#include <QtCore/qrect.h>
#include <QtCore/qmargins.h>
#include <QtCore/qstring.h>
#include <QtGui/qwindowdefs.h>
#include <QtGui/qwindow.h>
#include <qpa/qplatformopenglcontext.h>
#include <qpa/qplatformsurface.h>
 
QT_BEGIN_NAMESPACE
 
#define QWINDOWSIZE_MAX ((1<<24)-1)
 
class QPlatformScreen;
class QPlatformWindowPrivate;
class QScreen;
class QWindow;
class QIcon;
class QRegion;
 
class Q_GUI_EXPORT QPlatformWindow : public QPlatformSurface
{
    Q_DECLARE_PRIVATE(QPlatformWindow)
public:
    Q_DISABLE_COPY_MOVE(QPlatformWindow)
 
    explicit QPlatformWindow(QWindow *window);
    ~QPlatformWindow() override;
 
    virtual void initialize();
 
    QWindow *window() const;
    QPlatformWindow *parent() const;
 
    QPlatformScreen *screen() const override;
 
    virtual QSurfaceFormat format() const override;
 
    virtual void setGeometry(const QRect &rect);
    virtual QRect geometry() const;
    virtual QRect normalGeometry() const;
 
    virtual QMargins frameMargins() const;
    virtual QMargins safeAreaMargins() const;
 
    virtual void setVisible(bool visible);
    virtual void setWindowFlags(Qt::WindowFlags flags);
    virtual void setWindowState(Qt::WindowStates state);
 
    virtual WId winId() const;
    virtual void setParent(const QPlatformWindow *window);
 
    virtual void setWindowTitle(const QString &title);
    virtual void setWindowFilePath(const QString &title);
    virtual void setWindowIcon(const QIcon &icon);
    virtual bool close();
    virtual void raise();
    virtual void lower();
 
    virtual bool isExposed() const;
    virtual bool isActive() const;
    virtual bool isAncestorOf(const QPlatformWindow *child) const;
    virtual bool isEmbedded() const;
    virtual bool isForeignWindow() const { return false; }
    virtual QPoint mapToGlobal(const QPoint &pos) const;
    QPointF mapToGlobalF(const QPointF &pos) const;
    virtual QPoint mapFromGlobal(const QPoint &pos) const;
    QPointF mapFromGlobalF(const QPointF &pos) const;
 
    virtual void propagateSizeHints();
 
    virtual void setOpacity(qreal level);
    virtual void setMask(const QRegion &region);
    virtual void requestActivateWindow();
 
    virtual void handleContentOrientationChange(Qt::ScreenOrientation orientation);
 
    virtual qreal devicePixelRatio() const;
 
    virtual bool setKeyboardGrabEnabled(bool grab);
    virtual bool setMouseGrabEnabled(bool grab);
 
    virtual bool setWindowModified(bool modified);
 
    virtual bool windowEvent(QEvent *event);
 
    virtual bool startSystemResize(Qt::Edges edges);
    virtual bool startSystemMove();
 
    virtual void setFrameStrutEventsEnabled(bool enabled);
    virtual bool frameStrutEventsEnabled() const;
 
    virtual void setAlertState(bool enabled);
    virtual bool isAlertState() const;
 
    virtual void invalidateSurface();
 
    static QRect initialGeometry(const QWindow *w, const QRect &initialGeometry,
                                 int defaultWidth, int defaultHeight,
                                 const QScreen **resultingScreenReturn = nullptr);
 
    virtual void requestUpdate();
    bool hasPendingUpdateRequest() const;
    virtual void deliverUpdateRequest();
 
    // Window property accessors. Platform plugins should use these
    // instead of accessing QWindow directly.
    QSize windowMinimumSize() const;
    QSize windowMaximumSize() const;
    QSize windowBaseSize() const;
    QSize windowSizeIncrement() const;
    QRect windowGeometry() const;
    QRect windowFrameGeometry() const;
    QRectF windowClosestAcceptableGeometry(const QRectF &nativeRect) const;
    static QRectF closestAcceptableGeometry(const QWindow *w, const QRectF &nativeRect);
 
protected:
    static QString formatWindowTitle(const QString &title, const QString &separator);
    QPlatformScreen *screenForGeometry(const QRect &newGeometry) const;
    static QSize constrainWindowSize(const QSize &size);
 
    QScopedPointer<QPlatformWindowPrivate> d_ptr;
};
 
QT_END_NAMESPACE
 
#endif //QPLATFORMWINDOW_H