Support multiple native surfaces on Android.

Support for multiple native surfaces is needed by applications that need
to mix raster windows with GL windows.
Rework the raster and opengl implementation, get rid of eglfs and
fbconvenience dependencies.
Create a single android platform plugin.

[ChangeLog][Android] Rework the raster and opengl implementation.
[ChangeLog][Android] Create a single android platform plugin.

Task-number: QTBUG-34650

Change-Id: I9b1ab51554823329dda8cfbf8fef27c38f917c7b
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>

1 files changed, 352 insertions, 0 deletions

diff --git a/src/plugins/platforms/android/qandroidplatformscreen.cpp b/src/plugins/platforms/android/qandroidplatformscreen.cpp
new file mode 100644
index 0000000000..4f956f7a4f
--- /dev/null
+++ b/src/plugins/platforms/android/qandroidplatformscreen.cpp
@@ -0,0 +1,352 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 BogDan Vatra <bogdan@kde.org>
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QDebug>
+#include <QTime>
+
+#include <qpa/qwindowsysteminterface.h>
+
+#include "qandroidplatformscreen.h"
+#include "qandroidplatformbackingstore.h"
+#include "qandroidplatformintegration.h"
+#include "androidjnimain.h"
+#include "androidjnimenu.h"
+#include "qandroidplatformrasterwindow.h"
+
+#include <android/bitmap.h>
+
+QT_BEGIN_NAMESPACE
+
+#warning REMOVE ME
+class ScopedProfiler
+{
+public:
+    ScopedProfiler(const QString &msg)
+    {
+        m_msg = msg;
+    }
+    ~ScopedProfiler()
+    {
+        qDebug() << m_msg << m_timer.elapsed();
+    }
+
+private:
+    QTime m_timer;
+    QString m_msg;
+};
+
+#define PROFILE_SCOPE ScopedProfiler ___sp___(__func__)
+
+QAndroidPlatformScreen::QAndroidPlatformScreen():QObject(),QPlatformScreen()
+{
+    m_geometry = QRect(0, 0, QAndroidPlatformIntegration::m_defaultGeometryWidth, QAndroidPlatformIntegration::m_defaultGeometryHeight);
+    // Raster only apps should set QT_ANDROID_RASTER_IMAGE_DEPTH to 16
+    // is way much faster than 32
+    if (qgetenv("QT_ANDROID_RASTER_IMAGE_DEPTH").toInt() == 16) {
+        m_format = QImage::Format_RGB16;
+        m_depth = 16;
+    } else {
+        m_format = QImage::Format_RGBA8888;
+        m_depth = 32;
+    }
+    m_physicalSize.setHeight(QAndroidPlatformIntegration::m_defaultPhysicalSizeHeight);
+    m_physicalSize.setWidth(QAndroidPlatformIntegration::m_defaultPhysicalSizeWidth);
+    m_redrawTimer.setSingleShot(true);
+    m_redrawTimer.setInterval(0);
+    connect(&m_redrawTimer, SIGNAL(timeout()), this, SLOT(doRedraw()));
+}
+
+QAndroidPlatformScreen::~QAndroidPlatformScreen()
+{
+    if (m_id != -1) {
+        QtAndroid::destroySurface(m_id);
+        m_surfaceWaitCondition.wakeOne();
+        if (m_bitmap)
+            QtAndroid::AttachedJNIEnv().jniEnv->DeleteGlobalRef(m_bitmap);
+    }
+}
+
+QWindow *QAndroidPlatformScreen::topWindow() const
+{
+    foreach (QAndroidPlatformWindow *w, m_windowStack)
+        if (w->window()->type() == Qt::Window || w->window()->type() == Qt::Dialog)
+            return w->window();
+    return 0;
+}
+
+QWindow *QAndroidPlatformScreen::topLevelAt(const QPoint &p) const
+{
+    foreach (QAndroidPlatformWindow *w, m_windowStack) {
+        if (w->geometry().contains(p, false) && w->window()->isVisible())
+            return w->window();
+    }
+    return 0;
+}
+
+void QAndroidPlatformScreen::addWindow(QAndroidPlatformWindow *window)
+{
+    m_windowStack.prepend(window);
+    if (window->isRaster())
+        setDirty(window->geometry());
+
+    QWindow *w = topWindow();
+    QWindowSystemInterface::handleWindowActivated(w);
+    topWindowChanged(w);
+}
+
+void QAndroidPlatformScreen::removeWindow(QAndroidPlatformWindow *window)
+{
+    m_windowStack.removeOne(window);
+    if (window->isRaster()) {
+        setDirty(window->geometry());
+    }
+    QWindow *w = topWindow();
+    QWindowSystemInterface::handleWindowActivated(w);
+    topWindowChanged(w);
+}
+
+void QAndroidPlatformScreen::raise(QAndroidPlatformWindow *window)
+{
+    int index = m_windowStack.indexOf(window);
+    if (index <= 0)
+        return;
+    m_windowStack.move(index, 0);
+    if (window->isRaster()) {
+        setDirty(window->geometry());
+    }
+    QWindow *w = topWindow();
+    QWindowSystemInterface::handleWindowActivated(w);
+    topWindowChanged(w);
+}
+
+void QAndroidPlatformScreen::lower(QAndroidPlatformWindow *window)
+{
+    int index = m_windowStack.indexOf(window);
+    if (index == -1 || index == (m_windowStack.size() - 1))
+        return;
+    m_windowStack.move(index, m_windowStack.size() - 1);
+    if (window->isRaster()) {
+        setDirty(window->geometry());
+    }
+    QWindow *w = topWindow();
+    QWindowSystemInterface::handleWindowActivated(w);
+    topWindowChanged(w);
+}
+
+void QAndroidPlatformScreen::scheduleUpdate()
+{
+    if (!m_redrawTimer.isActive())
+        m_redrawTimer.start();
+}
+
+void QAndroidPlatformScreen::setDirty(const QRect &rect)
+{
+    QRect intersection = rect.intersected(m_geometry);
+    QPoint screenOffset = m_geometry.topLeft();
+    m_repaintRegion += intersection.translated(-screenOffset);    // global to local translation
+    scheduleUpdate();
+}
+
+void QAndroidPlatformScreen::setPhysicalSize(const QSize &size)
+{
+    m_physicalSize = size;
+}
+
+void QAndroidPlatformScreen::setGeometry(const QRect &rect)
+{
+    QMutexLocker lock(&m_surfaceMutex);
+    if (m_geometry == rect)
+        return;
+
+    m_geometry = rect;
+    QWindowSystemInterface::handleScreenGeometryChange(QPlatformScreen::screen(), geometry());
+    QWindowSystemInterface::handleScreenAvailableGeometryChange(QPlatformScreen::screen(), availableGeometry());
+    resizeMaximizedWindows();
+
+    if (m_id != -1) {
+        if (m_bitmap) {
+            QtAndroid::AttachedJNIEnv().jniEnv->DeleteGlobalRef(m_bitmap);
+            m_bitmap = 0;
+        }
+        QtAndroid::setSurfaceGeometry(m_id, rect);
+    }
+}
+
+void QAndroidPlatformScreen::topWindowChanged(QWindow *w)
+{
+    QtAndroidMenu::setActiveTopLevelWindow(w);
+
+    if (w != 0) {
+        QAndroidPlatformWindow *platformWindow = static_cast<QAndroidPlatformWindow *>(w->handle());
+        if (platformWindow != 0)
+            platformWindow->updateStatusBarVisibility();
+    }
+}
+
+void QAndroidPlatformScreen::doRedraw()
+{
+    PROFILE_SCOPE;
+
+    if (m_repaintRegion.isEmpty())
+        return;
+
+    QVector<QRect> rects = m_repaintRegion.rects();
+
+    QMutexLocker lock(&m_surfaceMutex);
+    if (m_id == -1) {
+        m_id = QtAndroid::createSurface(this, m_geometry, true);
+        m_surfaceWaitCondition.wait(&m_surfaceMutex);
+    }
+
+    if (!m_bitmap || !m_surface.isValid())
+        return;
+
+    QJNIEnvironmentPrivate env;
+    if (!env)
+        return;
+
+    int ret;
+    void *pixels;
+
+    if ((ret = AndroidBitmap_lockPixels(env, m_bitmap, &pixels)) < 0) {
+        qWarning() << "AndroidBitmap_lockPixels() failed! error=" << ret;
+        return;
+    }
+
+    QImage mScreenImage(reinterpret_cast<uchar *>(pixels), m_bitmapWidth, m_bitmapHeight, m_bitmapStride, m_format);
+    QPainter mCompositePainter(&mScreenImage);
+
+    for (int rectIndex = 0; rectIndex < rects.size(); rectIndex++) {
+        QRegion visibleRegion = rects[rectIndex];
+        foreach (QAndroidPlatformWindow *window, m_windowStack) {
+            if (!window->window()->isVisible()
+                    || !window->isRaster())
+                continue;
+
+            foreach (const QRect &rect, visibleRegion.rects()) {
+                QRect targetRect = window->geometry();
+                targetRect &= rect;
+
+                if (targetRect.isNull())
+                    continue;
+
+                visibleRegion -= targetRect;
+                QRect windowRect = targetRect.translated(-window->geometry().topLeft());
+                QAndroidPlatformBackingStore *backingStore = static_cast<QAndroidPlatformRasterWindow *>(window)->backingStore();
+                if (backingStore)
+                    mCompositePainter.drawImage(targetRect, backingStore->image(), windowRect);
+            }
+        }
+
+        foreach (const QRect &rect, visibleRegion.rects())
+            mCompositePainter.fillRect(rect, Qt::transparent);
+    }
+
+
+    QRect br = m_repaintRegion.boundingRect();
+    m_repaintRegion = QRegion();
+    AndroidBitmap_unlockPixels(env, m_bitmap);
+
+    QJNIObjectPrivate jrect("android.graphics.Rect", "(IIII)V",
+                            jint(br.left()),
+                            jint(br.top()),
+                            jint(br.right() + 1),
+                            jint(br.bottom() + 1));
+
+    QJNIObjectPrivate canvas = m_surface.callObjectMethod("lockCanvas",
+                                                "(Landroid/graphics/Rect;)Landroid/graphics/Canvas;",
+                                                jrect.object());
+    if (!canvas.isValid()) {
+        qWarning() << "Can't lockCanvas";
+        return;
+    }
+    canvas.callMethod<void>("drawBitmap",
+                          "(Landroid/graphics/Bitmap;Landroid/graphics/Rect;Landroid/graphics/Rect;Landroid/graphics/Paint;)V",
+                      m_bitmap, jrect.object(), jrect.object(), jobject(0));
+
+    m_surface.callMethod<void>("unlockCanvasAndPost", "(Landroid/graphics/Canvas;)V", canvas.object());
+}
+
+QDpi QAndroidPlatformScreen::logicalDpi() const
+{
+    qreal lDpi = QtAndroid::scaledDensity() * 72;
+    return QDpi(lDpi, lDpi);
+}
+
+Qt::ScreenOrientation QAndroidPlatformScreen::orientation() const
+{
+    return QAndroidPlatformIntegration::m_orientation;
+}
+
+Qt::ScreenOrientation QAndroidPlatformScreen::nativeOrientation() const
+{
+    return QAndroidPlatformIntegration::m_nativeOrientation;
+}
+
+void QAndroidPlatformScreen::surfaceChanged(JNIEnv *env, jobject surface, int w, int h)
+{
+    lockSurface();
+    m_surface = surface;
+
+    if (surface && w && h) {
+        if (w != m_bitmapWidth || h != m_bitmapHeight) {
+            if (m_bitmap)
+                env->DeleteGlobalRef(m_bitmap);
+            m_bitmap = env->NewGlobalRef(QtAndroid::createBitmap(w, h, m_format, env));
+            AndroidBitmapInfo info;
+            int res = AndroidBitmap_getInfo(env, m_bitmap, &info);
+            Q_ASSERT(res > -1);
+            m_bitmapStride = info.stride;
+            m_bitmapWidth = info.width;
+            m_bitmapHeight = info.height;
+        }
+    } else {
+        if (m_bitmap) {
+            env->DeleteGlobalRef(m_bitmap);
+            m_bitmap = 0;
+        }
+    }
+    unlockSurface();
+    m_surfaceWaitCondition.wakeOne();
+}
+
+QT_END_NAMESPACE