EGLFS: Enablers for Android plugin

These are some changes that are needed to make the Android
plugin as a subclass of the EGLFS plugin.

Change-Id: I7c77931f311d8a07f9292715d2abc256c5d552d8
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>

src/plugins/platforms/eglfs/eglfs.pri

@@ -0,0 +1,44 @@
+QT += core-private gui-private platformsupport-private
+
+#DEFINES += QEGL_EXTRA_DEBUG
+
+#Avoid X11 header collision
+DEFINES += MESA_EGL_NO_X11_HEADERS
+
+#To test the hooks on x11 (xlib), comment the above define too
+#EGLFS_PLATFORM_HOOKS_SOURCES += qeglfshooks_x11.cpp
+#LIBS += -lX11
+
+SOURCES +=  $$PWD/qeglfsintegration.cpp \
+            $$PWD/qeglfswindow.cpp \
+            $$PWD/qeglfsbackingstore.cpp \
+            $$PWD/qeglfsscreen.cpp \
+            $$PWD/qeglfshooks_stub.cpp \
+            $$PWD/qeglfscursor.cpp \
+            $$PWD/qeglfscontext.cpp
+
+HEADERS +=  $$PWD/qeglfsintegration.h \
+            $$PWD/qeglfswindow.h \
+            $$PWD/qeglfsbackingstore.h \
+            $$PWD/qeglfsscreen.h \
+            $$PWD/qeglfscursor.h \
+            $$PWD/qeglfshooks.h \
+            $$PWD/qeglfscontext.h
+
+QMAKE_LFLAGS += $$QMAKE_LFLAGS_NOUNDEF
+
+INCLUDEPATH += $$PWD
+
+!isEmpty(EGLFS_PLATFORM_HOOKS_SOURCES) {
+    HEADERS += $$EGLFS_PLATFORM_HOOKS_HEADERS
+    SOURCES += $$EGLFS_PLATFORM_HOOKS_SOURCES
+    LIBS    += $$EGLFS_PLATFORM_HOOKS_LIBS
+    DEFINES += EGLFS_PLATFORM_HOOKS
+}
+
+CONFIG += egl qpa/genericunixfontdatabase
+
+RESOURCES += $$PWD/cursor.qrc
+
+OTHER_FILES += \
+    $$PWD/eglfs.json

src/plugins/platforms/eglfs/eglfs.pro

@@ -4,48 +4,6 @@ PLUGIN_TYPE = platforms
 PLUGIN_CLASS_NAME = QEglFSIntegrationPlugin
 load(qt_plugin)
 
-QT += core-private gui-private platformsupport-private
+SOURCES += $$PWD/main.cpp
 
-#DEFINES += QEGL_EXTRA_DEBUG
-
-#Avoid X11 header collision
-DEFINES += MESA_EGL_NO_X11_HEADERS
-
-#To test the hooks on x11 (xlib), comment the above define too
-#EGLFS_PLATFORM_HOOKS_SOURCES += qeglfshooks_x11.cpp
-#LIBS += -lX11
-
-SOURCES =   main.cpp \
-            qeglfsintegration.cpp \
-            qeglfswindow.cpp \
-            qeglfsbackingstore.cpp \
-            qeglfsscreen.cpp \
-            qeglfshooks_stub.cpp \
-            qeglfscursor.cpp \
-            qeglfscontext.cpp
-
-HEADERS =   qeglfsintegration.h \
-            qeglfswindow.h \
-            qeglfsbackingstore.h \
-            qeglfsscreen.h \
-            qeglfscursor.h \
-            qeglfshooks.h \
-            qeglfscontext.h
-
-QMAKE_LFLAGS += $$QMAKE_LFLAGS_NOUNDEF
-
-INCLUDEPATH += $$PWD
-
-!isEmpty(EGLFS_PLATFORM_HOOKS_SOURCES) {
-    HEADERS += $$EGLFS_PLATFORM_HOOKS_HEADERS
-    SOURCES += $$EGLFS_PLATFORM_HOOKS_SOURCES
-    LIBS    += $$EGLFS_PLATFORM_HOOKS_LIBS
-    DEFINES += EGLFS_PLATFORM_HOOKS
-}
-
-CONFIG += egl qpa/genericunixfontdatabase
-
-RESOURCES += cursor.qrc
-
-OTHER_FILES += \
-    eglfs.json
+include(eglfs.pri)

src/plugins/platforms/eglfs/qeglfscontext.cpp

@@ -53,7 +53,7 @@ QT_BEGIN_NAMESPACE
 
 QEglFSContext::QEglFSContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share,
                              EGLDisplay display, EGLenum eglApi)
-    : QEGLPlatformContext(format, share, display, QEglFSIntegration::chooseConfig(display, format), eglApi)
+    : QEGLPlatformContext(QEglFSHooks::hooks()->surfaceFormatFor(format), share, display, QEglFSIntegration::chooseConfig(display, QEglFSHooks::hooks()->surfaceFormatFor(format)), eglApi)
 {
 }
 

src/plugins/platforms/eglfs/qeglfshooks_stub.cpp

@@ -246,12 +246,14 @@ QEglFSCursor *QEglFSHooks::createCursor(QEglFSScreen *screen) const
 
 void QEglFSHooks::waitForVSync() const
 {
+#if defined(FBIO_WAITFORVSYNC)
     static const bool forceSync = qgetenv("QT_QPA_EGLFS_FORCEVSYNC").toInt();
     if (forceSync && framebuffer != -1) {
         int arg = 0;
         if (ioctl(framebuffer, FBIO_WAITFORVSYNC, &arg) == -1)
             qWarning("Could not wait for vsync.");
     }
+#endif
 }
 
 #ifndef EGLFS_PLATFORM_HOOKS

src/plugins/platforms/eglfs/qeglfsintegration.h

@@ -74,8 +74,11 @@ public:
     void *nativeResourceForIntegration(const QByteArray &resource);
     void *nativeResourceForContext(const QByteArray &resource, QOpenGLContext *context);
 
+    QPlatformScreen *screen() const { return mScreen; }
     static EGLConfig chooseConfig(EGLDisplay display, const QSurfaceFormat &format);
 
+    EGLDisplay display() const { return mDisplay; }
+
 private:
     EGLDisplay mDisplay;
     QAbstractEventDispatcher *mEventDispatcher;

src/plugins/platforms/eglfs/qeglfswindow.cpp

@@ -84,11 +84,28 @@ void QEglFSWindow::create()
 
     EGLDisplay display = (static_cast<QEglFSScreen *>(window()->screen()->handle()))->display();
     QSurfaceFormat platformFormat = QEglFSHooks::hooks()->surfaceFormatFor(window()->requestedFormat());
-    EGLConfig config = QEglFSIntegration::chooseConfig(display, platformFormat);
+    m_config = QEglFSIntegration::chooseConfig(display, platformFormat);
+    m_format = q_glFormatFromConfig(display, m_config);
+    resetSurface();
+}
+
+void QEglFSWindow::invalidateSurface()
+{
+    // Native surface has been deleted behind our backs
+    m_window = 0;
+    if (m_surface != 0) {
+        EGLDisplay display = (static_cast<QEglFSScreen *>(window()->screen()->handle()))->display();
+        eglDestroySurface(display, m_surface);
+        m_surface = 0;
+    }
+}
+
+void QEglFSWindow::resetSurface()
+{
+    EGLDisplay display = static_cast<QEglFSScreen *>(screen())->display();
 
-    m_format = q_glFormatFromConfig(display, config);
     m_window = QEglFSHooks::hooks()->createNativeWindow(QEglFSHooks::hooks()->screenSize(), m_format);
-    m_surface = eglCreateWindowSurface(display, config, m_window, NULL);
+    m_surface = eglCreateWindowSurface(display, m_config, m_window, NULL);
     if (m_surface == EGL_NO_SURFACE) {
         EGLint error = eglGetError();
         eglTerminate(display);
@@ -99,7 +116,7 @@ void QEglFSWindow::create()
 void QEglFSWindow::destroy()
 {
     if (m_surface) {
-        EGLDisplay display = (static_cast<QEglFSScreen *>(window()->screen()->handle()))->display();
+        EGLDisplay display = static_cast<QEglFSScreen *>(screen())->display();
         eglDestroySurface(display, m_surface);
         m_surface = 0;
     }
@@ -114,9 +131,8 @@ void QEglFSWindow::setGeometry(const QRect &)
 {
     // We only support full-screen windows
     QRect rect(screen()->availableGeometry());
-    QWindowSystemInterface::handleGeometryChange(window(), rect);
-
     QPlatformWindow::setGeometry(rect);
+    QWindowSystemInterface::handleGeometryChange(window(), rect);
 }
 
 void QEglFSWindow::setWindowState(Qt::WindowState)

src/plugins/platforms/eglfs/qeglfswindow.h

@@ -65,10 +65,14 @@ public:
     void create();
     void destroy();
 
+    virtual void invalidateSurface();
+    virtual void resetSurface();
+
 private:
     WId m_winid;
     EGLSurface m_surface;
     EGLNativeWindowType m_window;
+    EGLConfig m_config;
     QSurfaceFormat m_format;
 };
 QT_END_NAMESPACE