Move API layer-only classes back from the shared static lib.

Since ContentBrowserClientQt::OverrideCreateWebContentsView now
takes care of using our Qt layer at runtime without relying on
the static RenderWidgetHostView::CreateViewForWidget, we can
now avoid linking this layer into the render process.

1 files changed, 143 insertions, 0 deletions

diff --git a/lib/backing_store_qt.cpp b/lib/backing_store_qt.cpp
new file mode 100644
index 000000000..cee0d093e
--- /dev/null
+++ b/lib/backing_store_qt.cpp
@@ -0,0 +1,143 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module 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 "backing_store_qt.h"
+
+#include "content/browser/renderer_host/render_widget_host_impl.h"
+#include "content/public/browser/render_process_host.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/rect_conversions.h"
+
+#include <QPainter>
+
+BackingStoreQt::BackingStoreQt(content::RenderWidgetHost *host, const gfx::Size &size, QWindow* parent)
+    : content::BackingStore(host, size)
+    , m_pixelBuffer(size.width(), size.height())
+{
+}
+
+BackingStoreQt::~BackingStoreQt()
+{
+}
+
+void BackingStoreQt::paintToTarget(QPainter* painter, const QRectF& rect)
+{
+    if (m_pixelBuffer.isNull())
+        return;
+    painter->drawPixmap(rect, m_pixelBuffer, rect);
+}
+
+void BackingStoreQt::PaintToBackingStore(content::RenderProcessHost *process,
+                                 TransportDIB::Id bitmap,
+                                 const gfx::Rect &bitmap_rect,
+                                 const std::vector<gfx::Rect> &copy_rects,
+                                 float scale_factor,
+                                 const base::Closure &completion_callback,
+                                 bool *scheduled_completion_callback)
+{
+    if (bitmap_rect.IsEmpty())
+        return;
+
+    *scheduled_completion_callback = false;
+    TransportDIB* dib = process->GetTransportDIB(bitmap);
+    if (!dib)
+      return;
+
+    gfx::Rect pixel_bitmap_rect = bitmap_rect;
+
+    uint8_t* bitmapData = static_cast<uint8_t*>(dib->memory());
+    int width = m_pixelBuffer.size().width();
+    int height = m_pixelBuffer.size().height();
+    const QImage img(bitmapData, pixel_bitmap_rect.width(), pixel_bitmap_rect.height(), QImage::Format_ARGB32);
+
+    QPainter painter(&m_pixelBuffer);
+
+    for (size_t i = 0; i < copy_rects.size(); ++i) {
+        gfx::Rect copy_rect = gfx::ToEnclosedRect(gfx::ScaleRect(copy_rects[i], scale_factor));
+
+        QRect source = QRect( copy_rect.x() - pixel_bitmap_rect.x()
+                            , copy_rect.y() - pixel_bitmap_rect.y()
+                            , copy_rect.width()
+                            , copy_rect.height());
+
+        QRect destination = QRect( copy_rect.x()
+                                 , copy_rect.y()
+                                 , copy_rect.width()
+                                 , copy_rect.height());
+
+        painter.drawImage(destination, img, source);
+    }
+}
+
+void BackingStoreQt::ScrollBackingStore(const gfx::Vector2d &delta, const gfx::Rect &clip_rect, const gfx::Size &view_size)
+{
+    DCHECK(delta.x() == 0 || delta.y() == 0);
+
+    m_pixelBuffer.scroll(delta.x(), delta.y(), clip_rect.x(), clip_rect.y(), clip_rect.width(), clip_rect.height());
+}
+
+bool BackingStoreQt::CopyFromBackingStore(const gfx::Rect &rect, skia::PlatformBitmap *output)
+{
+    // const int width = std::min(m_pixelBuffer.width(), rect.width());
+    // const int height = std::min(m_pixelBuffer.height(), rect.height());
+
+    // if (!output->Allocate(width, height, true))
+    //     return false;
+
+    // // This code assumes a visual mode where a pixel is
+    // // represented using a 32-bit unsigned int, with a byte per component.
+    // const SkBitmap& bitmap = output->GetBitmap();
+    // SkAutoLockPixels alp(bitmap);
+
+    // QPixmap cpy = m_pixelBuffer.copy(rect.x(), rect.y(), rect.width(), rect.height());
+    // QImage img = cpy.toImage();
+
+    // // Convert the format and remove transparency.
+    // if (img.format() != QImage::Format_RGB32)
+    //     img = img.convertToFormat(QImage::Format_RGB32);
+
+    // const uint8_t* src = img.bits();
+    // uint8_t* dst = reinterpret_cast<uint8_t*>(bitmap.getAddr32(0,0));
+    // memcpy(dst, src, width*height*32);
+
+    // return true;
+}
+