linuxfb: make platformsupport convenience compile

Rename fb_base to fbconvenience in-line with the other
convenience classes.

The code only compiles, it is not known to work.

Change-Id: If51700ddf0a11ace5129af6f00f34fd895a6a4df
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>

1 files changed, 269 insertions, 0 deletions

diff --git a/src/platformsupport/fbconvenience/qfbscreen.cpp b/src/platformsupport/fbconvenience/qfbscreen.cpp
new file mode 100644
index 0000000000..843300d5c5
--- /dev/null
+++ b/src/platformsupport/fbconvenience/qfbscreen.cpp
@@ -0,0 +1,269 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qfbscreen_p.h"
+#include "qfbcursor_p.h"
+#include "qfbwindow_p.h"
+#include "qfbbackingstore_p.h"
+
+#include <QtGui/QPainter>
+
+QT_BEGIN_NAMESPACE
+
+QFbScreen::QFbScreen() : cursor(0), mGeometry(), mDepth(16), mFormat(QImage::Format_RGB16), mScreenImage(0), compositePainter(0), isUpToDate(false)
+{
+    mScreenImage = new QImage(mGeometry.size(), mFormat);
+    redrawTimer.setSingleShot(true);
+    redrawTimer.setInterval(0);
+    connect(&redrawTimer, SIGNAL(timeout()), this, SLOT(doRedraw()));
+}
+
+void QFbScreen::raise(QPlatformWindow * surface)
+{
+    QFbWindow *s = static_cast<QFbWindow *>(surface);
+    int index = windowStack.indexOf(s);
+    if (index <= 0)
+        return;
+    windowStack.move(index, 0);
+    invalidateRectCache();
+    setDirty(s->geometry());
+}
+
+void QFbScreen::lower(QPlatformWindow * surface)
+{
+    QFbWindow *s = static_cast<QFbWindow *>(surface);
+    int index = windowStack.indexOf(s);
+    if (index == -1 || index == (windowStack.size() - 1))
+        return;
+    windowStack.move(index, windowStack.size() - 1);
+    invalidateRectCache();
+    setDirty(s->geometry());
+}
+
+QWindow *QFbScreen::topLevelAt(const QPoint & p) const
+{
+    Q_UNUSED(p);
+#if 0
+    for (int i = 0; i < windowStack.size(); i++) {
+        if (windowStack[i]->geometry().contains(p, false) &&
+            windowStack[i]->visible() &&
+            !windowStack[i]->widget()->isMinimized()) {
+            return windowStack[i]->widget();
+        }
+    }
+#endif
+    return 0;
+}
+
+
+void QFbScreen::setGeometry(QRect rect)
+{
+    delete mScreenImage;
+    mGeometry = rect;
+    mScreenImage = new QImage(mGeometry.size(), mFormat);
+    delete compositePainter;
+    compositePainter = 0;
+    invalidateRectCache();
+}
+
+void QFbScreen::setDepth(int depth)
+{
+    mDepth = depth;
+}
+
+void QFbScreen::setPhysicalSize(QSize size)
+{
+    mPhysicalSize = size;
+}
+
+void QFbScreen::setFormat(QImage::Format format)
+{
+    mFormat = format;
+    delete mScreenImage;
+    mScreenImage = new QImage(mGeometry.size(), mFormat);
+    delete compositePainter;
+    compositePainter = 0;
+}
+
+QFbScreen::~QFbScreen()
+{
+    delete compositePainter;
+    delete mScreenImage;
+}
+
+void QFbScreen::setDirty(const QRect &rect)
+{
+    QRect intersection = rect.intersected(mGeometry);
+    QPoint screenOffset = mGeometry.topLeft();
+    repaintRegion += intersection.translated(-screenOffset);    // global to local translation
+    if (!redrawTimer.isActive()) {
+        redrawTimer.start();
+    }
+}
+
+void QFbScreen::generateRects()
+{
+    cachedRects.clear();
+    QPoint screenOffset = mGeometry.topLeft();
+    QRegion remainingScreen(mGeometry.translated(-screenOffset)); // global to local translation
+
+    for (int i = 0; i < windowStack.length(); i++) {
+        if (remainingScreen.isEmpty())
+            break;
+#if 0
+        if (!windowStack[i]->isVisible())
+            continue;
+        if (windowStack[i]->isMinimized())
+            continue;
+
+        if (!windowStack[i]->testAttribute(Qt::WA_TranslucentBackground)) {
+            QRect localGeometry = windowStack.at(i)->geometry().translated(-screenOffset); // global to local translation
+            remainingScreen -= localGeometry;
+            QRegion windowRegion(localGeometry);
+            windowRegion -= remainingScreen;
+            foreach (QRect rect, windowRegion.rects()) {
+                cachedRects += QPair<QRect, int>(rect, i);
+            }
+        }
+#endif
+    }
+    foreach (QRect rect, remainingScreen.rects())
+        cachedRects += QPair<QRect, int>(rect, -1);
+    isUpToDate = true;
+    return;
+}
+
+
+
+QRegion QFbScreen::doRedraw()
+{
+    QPoint screenOffset = mGeometry.topLeft();
+
+    QRegion touchedRegion;
+    if (cursor && cursor->isDirty() && cursor->isOnScreen()) {
+        QRect lastCursor = cursor->dirtyRect();
+        repaintRegion += lastCursor;
+    }
+    if (repaintRegion.isEmpty() && (!cursor || !cursor->isDirty())) {
+        return touchedRegion;
+    }
+
+    QVector<QRect> rects = repaintRegion.rects();
+
+    if (!isUpToDate)
+        generateRects();
+
+    if (!compositePainter)
+        compositePainter = new QPainter(mScreenImage);
+    for (int rectIndex = 0; rectIndex < repaintRegion.rectCount(); rectIndex++) {
+        QRegion rectRegion = rects[rectIndex];
+
+        for (int i = 0; i < cachedRects.length(); i++) {
+            QRect screenSubRect = cachedRects[i].first;
+            int layer = cachedRects[i].second;
+            QRegion intersect = rectRegion.intersected(screenSubRect);
+
+            if (intersect.isEmpty())
+                continue;
+
+            rectRegion -= intersect;
+
+            // we only expect one rectangle, but defensive coding...
+            foreach (QRect rect, intersect.rects()) {
+                bool firstLayer = true;
+                if (layer == -1) {
+                    compositePainter->fillRect(rect, Qt::black);
+                    firstLayer = false;
+                    layer = windowStack.size() - 1;
+                }
+
+                for (int layerIndex = layer; layerIndex != -1; layerIndex--) {
+                    if (!windowStack[layerIndex]->isVisible())
+                        continue;
+                    // if (windowStack[layerIndex]->isMinimized())
+                    //     continue;
+                    QRect windowRect = windowStack[layerIndex]->geometry().translated(-screenOffset);
+                    QRect windowIntersect = rect.translated(-windowRect.left(),
+                                                            -windowRect.top());
+                    compositePainter->drawImage(rect, windowStack[layerIndex]->surface->image(),
+                                                windowIntersect);
+                    if (firstLayer) {
+                        firstLayer = false;
+                    }
+                }
+            }
+        }
+    }
+
+    QRect cursorRect;
+    if (cursor && (cursor->isDirty() || repaintRegion.intersects(cursor->lastPainted()))) {
+        cursorRect = cursor->drawCursor(*compositePainter);
+        touchedRegion += cursorRect;
+    }
+    touchedRegion += repaintRegion;
+    repaintRegion = QRegion();
+
+
+
+//    qDebug() << "QFbScreen::doRedraw"  << windowStack.size() << mScreenImage->size() << touchedRegion;
+
+
+    return touchedRegion;
+}
+
+void QFbScreen::addWindow(QFbWindow *surface)
+{
+    windowStack.prepend(surface);
+    surface->mScreens.append(this);
+    invalidateRectCache();
+    setDirty(surface->geometry());
+}
+
+void QFbScreen::removeWindow(QFbWindow * surface)
+{
+    windowStack.removeOne(surface);
+    surface->mScreens.removeOne(this);
+    invalidateRectCache();
+    setDirty(surface->geometry());
+}
+
+QT_END_NAMESPACE
+