Implement CopyFromSurface

Means we can get screenshots in devtools.

Change-Id: I7b50d6ac5a54d236573bcf5f58ae872bd50dccad
Reviewed-by: Jüri Valdmann <juri.valdmann@qt.io>

3 files changed, 13 insertions, 0 deletions

diff --git a/src/webengine/render_widget_host_view_qt_delegate_quick.cpp b/src/webengine/render_widget_host_view_qt_delegate_quick.cpp
index abdd4a8b3..1176573fd 100644
--- a/src/webengine/render_widget_host_view_qt_delegate_quick.cpp
+++ b/src/webengine/render_widget_host_view_qt_delegate_quick.cpp
@@ -376,4 +376,15 @@ void RenderWidgetHostViewQtDelegateQuick::onHide()
     m_client->forwardEvent(&event);
 }
 
+bool RenderWidgetHostViewQtDelegateQuick::copySurface(const QRect &rect, const QSize &size, QImage &image)
+{
+    image = QQuickItem::window()->grabWindow();
+    if (image.isNull())
+        return false;
+    QRect subrect = !rect.isEmpty() ? rect : image.rect();
+    image = image.copy(subrect);
+    image = image.scaled(size, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
+    return true;
+}
+
 } // namespace QtWebEngineCore
diff --git a/src/webengine/render_widget_host_view_qt_delegate_quick.h b/src/webengine/render_widget_host_view_qt_delegate_quick.h
index 2d9dc991b..6f6cd1509 100644
--- a/src/webengine/render_widget_host_view_qt_delegate_quick.h
+++ b/src/webengine/render_widget_host_view_qt_delegate_quick.h
@@ -82,6 +82,7 @@ public:
     void setInputMethodHints(Qt::InputMethodHints) override { }
     // The QtQuick view doesn't have a backbuffer of its own and doesn't need this
     void setClearColor(const QColor &) override { }
+    bool copySurface(const QRect &rect, const QSize &size, QImage &image) override;
 
 protected:
     bool event(QEvent *event) override;
diff --git a/src/webengine/render_widget_host_view_qt_delegate_quickwindow.h b/src/webengine/render_widget_host_view_qt_delegate_quickwindow.h
index df241bf3a..36e4ddd8a 100644
--- a/src/webengine/render_widget_host_view_qt_delegate_quickwindow.h
+++ b/src/webengine/render_widget_host_view_qt_delegate_quickwindow.h
@@ -78,6 +78,7 @@ public:
     void inputMethodStateChanged(bool, bool) override {}
     void setInputMethodHints(Qt::InputMethodHints) override { }
     void setClearColor(const QColor &) override { }
+    bool copySurface(const QRect &, const QSize &, QImage &) override { return false; }
 
 private:
     QScopedPointer<RenderWidgetHostViewQtDelegate> m_realDelegate;