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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#ifndef QWASMWINDOW_H
#define QWASMWINDOW_H
#include "qwasmintegration.h"
#include <qpa/qplatformwindow.h>
#include <emscripten/html5.h>
#include "qwasmbackingstore.h"
#include "qwasmscreen.h"
#include "qwasmcompositor.h"
QT_BEGIN_NAMESPACE
class QWasmWindow : public QPlatformWindow
{
public:
enum TitleBarControl {
SC_None = 0x00000000,
SC_TitleBarSysMenu = 0x00000001,
SC_TitleBarMaxButton = 0x00000002,
SC_TitleBarCloseButton = 0x00000004,
SC_TitleBarNormalButton = 0x00000008,
SC_TitleBarLabel = 0x00000010
};
Q_DECLARE_FLAGS(TitleBarControls, TitleBarControl);
QWasmWindow(QWindow *w, QWasmCompositor *compositor, QWasmBackingStore *backingStore);
~QWasmWindow();
void destroy();
void initialize() override;
void setGeometry(const QRect &) override;
void setVisible(bool visible) override;
bool isVisible();
QMargins frameMargins() const override;
WId winId() const override;
void propagateSizeHints() override;
void raise() override;
void lower() override;
QRect normalGeometry() const override;
qreal devicePixelRatio() const override;
void requestUpdate() override;
void requestActivateWindow() override;
QWasmScreen *platformScreen() const;
void setBackingStore(QWasmBackingStore *store) { m_backingStore = store; }
QWasmBackingStore *backingStore() const { return m_backingStore; }
QWindow *window() const { return m_window; }
void injectMousePressed(const QPoint &local, const QPoint &global,
Qt::MouseButton button, Qt::KeyboardModifiers mods);
void injectMouseReleased(const QPoint &local, const QPoint &global,
Qt::MouseButton button, Qt::KeyboardModifiers mods);
bool startSystemResize(Qt::Edges edges) final;
bool isPointOnTitle(QPoint point) const;
bool isPointOnResizeRegion(QPoint point) const;
Qt::Edges resizeEdgesAtPoint(QPoint point) const;
void setWindowState(Qt::WindowStates state) override;
void applyWindowState();
bool setKeyboardGrabEnabled(bool) override { return false; }
bool setMouseGrabEnabled(bool grab) final;
void drawTitleBar(QPainter *painter) const;
protected:
void invalidate();
bool hasTitleBar() const;
private:
friend class QWasmScreen;
struct TitleBarOptions
{
bool hasControl(TitleBarControl control) const;
QRect rect;
Qt::WindowFlags flags;
int state;
QPalette palette;
QString titleBarOptionsString;
TitleBarControls subControls;
QIcon windowIcon;
};
TitleBarOptions makeTitleBarOptions() const;
std::optional<QRect> getTitleBarControlRect(const TitleBarOptions &tb,
TitleBarControl control) const;
std::optional<QRect> getTitleBarControlRectLeftToRight(const TitleBarOptions &tb,
TitleBarControl control) const;
QRegion titleControlRegion() const;
QRegion titleGeometry() const;
int borderWidth() const;
int titleHeight() const;
QRegion resizeRegion() const;
TitleBarControl activeTitleBarControl() const;
std::optional<TitleBarControl> titleBarHitTest(const QPoint &globalPoint) const;
QWindow *m_window = nullptr;
QWasmCompositor *m_compositor = nullptr;
QWasmBackingStore *m_backingStore = nullptr;
QRect m_normalGeometry {0, 0, 0 ,0};
Qt::WindowStates m_windowState = Qt::WindowNoState;
Qt::WindowStates m_previousWindowState = Qt::WindowNoState;
TitleBarControl m_activeControl = SC_None;
WId m_winid = 0;
bool m_hasTitle = false;
bool m_needsCompositor = false;
long m_requestAnimationFrameId = -1;
friend class QWasmCompositor;
friend class QWasmEventTranslator;
bool windowIsPopupType(Qt::WindowFlags flags) const;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QWasmWindow::TitleBarControls);
QT_END_NAMESPACE
#endif // QWASMWINDOW_H
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