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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#ifndef NATIVEWINDOW_H
#define NATIVEWINDOW_H
#if defined(Q_OS_MACOS)
# include <AppKit/AppKit.h>
# define VIEW_BASE NSView
#elif defined(Q_OS_IOS)
# include <UIKit/UIKit.h>
# define VIEW_BASE UIView
#elif defined(Q_OS_WIN)
# include <winuser.h>
#elif QT_CONFIG(xcb)
# include <xcb/xcb.h>
#endif
class NativeWindow
{
Q_DISABLE_COPY(NativeWindow)
public:
NativeWindow();
~NativeWindow();
operator WId() const;
WId parentWinId() const;
void setGeometry(const QRect &rect);
QRect geometry() const;
private:
#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
VIEW_BASE *m_handle = nullptr;
#elif defined(Q_OS_WIN)
HWND m_handle = nullptr;
#elif QT_CONFIG(xcb)
xcb_window_t m_handle = 0;
#endif
};
#if defined(Q_OS_MACOS) || defined(Q_OS_IOS)
@interface View : VIEW_BASE
@end
@implementation View
- (instancetype)init
{
if ((self = [super init])) {
#if defined(Q_OS_MACOS)
self.wantsLayer = YES;
#endif
self.layer.backgroundColor = CGColorCreateGenericRGB(1.0, 0.5, 1.0, 1.0);
}
return self;
}
- (void)dealloc
{
[super dealloc];
}
@end
NativeWindow::NativeWindow()
: m_handle([View new])
{
}
NativeWindow::~NativeWindow()
{
[m_handle release];
}
void NativeWindow::setGeometry(const QRect &rect)
{
m_handle.frame = QRectF(rect).toCGRect();
}
QRect NativeWindow::geometry() const
{
return QRectF::fromCGRect(m_handle.frame).toRect();
}
NativeWindow::operator WId() const
{
return reinterpret_cast<WId>(m_handle);
}
WId NativeWindow::parentWinId() const
{
return WId(m_handle.superview);
}
#elif defined(Q_OS_WIN)
NativeWindow::NativeWindow()
{
static const LPCWSTR className = []{
WNDCLASS wc = {};
wc.lpfnWndProc = DefWindowProc;
wc.hInstance = GetModuleHandle(nullptr);
wc.lpszClassName = L"Native Window";
wc.hbrBackground = CreateSolidBrush(RGB(255, 128, 255));
RegisterClass(&wc);
return wc.lpszClassName;
}();
m_handle = CreateWindowEx(0, className, nullptr, WS_POPUP,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
nullptr, nullptr, GetModuleHandle(nullptr), nullptr);
}
NativeWindow::~NativeWindow()
{
DestroyWindow(m_handle);
}
void NativeWindow::setGeometry(const QRect &rect)
{
MoveWindow(m_handle, rect.x(), rect.y(), rect.width(), rect.height(), false);
}
QRect NativeWindow::geometry() const
{
WINDOWPLACEMENT wp;
wp.length = sizeof(WINDOWPLACEMENT);
if (GetWindowPlacement(m_handle, &wp)) {
RECT r = wp.rcNormalPosition;
return QRect(r.left, r.top, r.right - r.left, r.bottom - r.top);
}
return {};
}
NativeWindow::operator WId() const
{
return reinterpret_cast<WId>(m_handle);
}
WId NativeWindow::parentWinId() const
{
return WId(GetAncestor(m_handle, GA_PARENT));
}
#elif QT_CONFIG(xcb)
struct Connection
{
Connection() : m_connection(xcb_connect(nullptr, nullptr)) {}
~Connection() { xcb_disconnect(m_connection); }
operator xcb_connection_t*() const { return m_connection; }
xcb_connection_t *m_connection = nullptr;
};
static Connection connection;
NativeWindow::NativeWindow()
{
m_handle = xcb_generate_id(connection);
xcb_screen_t *screen = xcb_setup_roots_iterator(xcb_get_setup(connection)).data;
xcb_create_window(connection, XCB_COPY_FROM_PARENT, m_handle,
screen->root, 0, 0, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT,
screen->root_visual, XCB_CW_BACK_PIXEL,
(const uint32_t []){ 0xffffaaff });
xcb_flush(connection);
}
NativeWindow::~NativeWindow()
{
xcb_destroy_window(connection, m_handle);
}
void NativeWindow::setGeometry(const QRect &rect)
{
const quint32 mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y
| XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
const qint32 values[] = { rect.x(), rect.y(), rect.width(), rect.height() };
xcb_configure_window(connection, m_handle, mask,
reinterpret_cast<const quint32*>(values));
xcb_flush(connection);
}
QRect NativeWindow::geometry() const
{
xcb_get_geometry_reply_t *geometry = xcb_get_geometry_reply(
connection, xcb_get_geometry(connection, m_handle), nullptr);
const auto cleanup = qScopeGuard([&]{ free(geometry); });
return QRect(geometry->x, geometry->y, geometry->width, geometry->height);
}
NativeWindow::operator WId() const
{
return m_handle;
}
WId NativeWindow::parentWinId() const
{
xcb_query_tree_reply_t *tree = xcb_query_tree_reply(
connection, xcb_query_tree(connection, m_handle), nullptr);
const auto cleanup = qScopeGuard([&]{ free(tree); });
return tree->parent;
}
#endif
#endif // NATIVEWINDOW_H
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