| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #include "qeglfsemulatorintegration.h" |
| 5 | #include "qeglfsemulatorscreen.h" |
| 6 | #include "private/qeglfsintegration_p.h" |
| 7 | |
| 8 | #include <private/qguiapplication_p.h> |
| 9 | #include <QtGui/private/qeglconvenience_p.h> |
| 10 | #include <QtGui/private/qeglplatformcontext_p.h> |
| 11 | |
| 12 | #include <qpa/qwindowsysteminterface.h> |
| 13 | |
| 14 | #include <QtCore/QJsonDocument> |
| 15 | #include <QtCore/QJsonArray> |
| 16 | #include <QtCore/QJsonParseError> |
| 17 | |
| 18 | QT_BEGIN_NAMESPACE |
| 19 | |
| 20 | QEglFSEmulatorIntegration::QEglFSEmulatorIntegration() |
| 21 | { |
| 22 | // The Qt Emulator provides the ability to render to multiple displays |
| 23 | // In addition to the usual EGL and OpenGLESv2 API's, there are also a |
| 24 | // few additional API's that enable the client (this plugin) to query |
| 25 | // the available screens and their properties, as well as the ability |
| 26 | // to select which screen is the active render target (as this is |
| 27 | // usually handled in a platform specific way and not by EGL itself). |
| 28 | |
| 29 | getDisplays = reinterpret_cast<PFNQGSGETDISPLAYSPROC>(eglGetProcAddress(procname: "qgsGetDisplays")); |
| 30 | setDisplay = reinterpret_cast<PFNQGSSETDISPLAYPROC>(eglGetProcAddress(procname: "qgsSetDisplay")); |
| 31 | } |
| 32 | |
| 33 | void QEglFSEmulatorIntegration::platformInit() |
| 34 | { |
| 35 | } |
| 36 | |
| 37 | void QEglFSEmulatorIntegration::platformDestroy() |
| 38 | { |
| 39 | } |
| 40 | |
| 41 | bool QEglFSEmulatorIntegration::usesDefaultScreen() |
| 42 | { |
| 43 | // This makes it possible to remotely query and then register our own set of screens |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | void QEglFSEmulatorIntegration::screenInit() |
| 48 | { |
| 49 | // Use qgsGetDisplays() call to retrieve the available screens from the Emulator |
| 50 | if (getDisplays) { |
| 51 | QByteArray displaysInfo = getDisplays(); |
| 52 | QJsonParseError error; |
| 53 | QJsonDocument displaysDocument = QJsonDocument::fromJson(json: displaysInfo, error: &error); |
| 54 | if (error.error == QJsonParseError::NoError) { |
| 55 | // Document should be an array of screen objects |
| 56 | if (displaysDocument.isArray()){ |
| 57 | QJsonArray screenArray = displaysDocument.array(); |
| 58 | for (auto screenValue : screenArray) { |
| 59 | if (screenValue.isObject()) |
| 60 | QWindowSystemInterface::handleScreenAdded(screen: new QEglFSEmulatorScreen(screenValue.toObject())); |
| 61 | } |
| 62 | } |
| 63 | } else { |
| 64 | qWarning() << "eglfs_emu: Failed to parse display info JSON with error: "<< error.errorString() |
| 65 | << " at offset "<< error.offset << " : "<< displaysInfo; |
| 66 | |
| 67 | } |
| 68 | } else { |
| 69 | qFatal(msg: "EGL library doesn't support Emulator extensions"); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | bool QEglFSEmulatorIntegration::hasCapability(QPlatformIntegration::Capability cap) const |
| 74 | { |
| 75 | switch (cap) { |
| 76 | case QPlatformIntegration::ThreadedPixmaps: |
| 77 | case QPlatformIntegration::OpenGL: |
| 78 | case QPlatformIntegration::ThreadedOpenGL: |
| 79 | return true; |
| 80 | default: |
| 81 | return false; |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | EGLNativeWindowType QEglFSEmulatorIntegration::createNativeWindow(QPlatformWindow *platformWindow, |
| 86 | const QSize &size, |
| 87 | const QSurfaceFormat &format) |
| 88 | { |
| 89 | Q_UNUSED(size); |
| 90 | Q_UNUSED(format); |
| 91 | QEglFSEmulatorScreen *screen = static_cast<QEglFSEmulatorScreen *>(platformWindow->screen()); |
| 92 | if (screen && setDisplay) { |
| 93 | // Let the emulator know which screen the window surface is attached to |
| 94 | setDisplay(screen->id()); |
| 95 | } |
| 96 | Q_CONSTINIT static QBasicAtomicInt uniqueWindowId = Q_BASIC_ATOMIC_INITIALIZER(0); |
| 97 | return EGLNativeWindowType(qintptr(1 + uniqueWindowId.fetchAndAddRelaxed(valueToAdd: 1))); |
| 98 | } |
| 99 | |
| 100 | QT_END_NAMESPACE |
| 101 |