From d3330dd40f2904f06dce4b3a40924803e03646e1 Mon Sep 17 00:00:00 2001
From: Andras Becsi <andras.becsi@digia.com>
Date: Tue, 23 Sep 2014 17:59:50 +0200
Subject: [PATCH] Fix issues on HiDPI displays
This patch fixes widgets rendering on HiDPI displays and notifies
about the a potential device pixel ratio change when the window is
moved. This addresses the blurriness when a web view is moved
between an attached LoDPI screen and HiDPI screen resulting from
the device pixel ratio not being updated.
Change-Id: I97af0199c07deac8bbe4688c665aaa6df1608ae9
Reviewed-by: Michael Bruning <michael.bruning@digia.com>
---
src/core/render_widget_host_view_qt.cpp | 2 ++
.../render_widget_host_view_qt_delegate_widget.cpp | 5 +++--
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/core/render_widget_host_view_qt.cpp b/src/core/render_widget_host_view_qt.cpp
index 31eb0a9d8..2cc5510ae 100644
--- a/src/core/render_widget_host_view_qt.cpp
+++ b/src/core/render_widget_host_view_qt.cpp
@@ -676,6 +676,8 @@ void RenderWidgetHostViewQt::notifyResize()
void RenderWidgetHostViewQt::windowBoundsChanged()
{
m_host->SendScreenRects();
+ if (m_delegate->window())
+ m_host->NotifyScreenInfoChanged();
}
void RenderWidgetHostViewQt::windowChanged()
diff --git a/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp b/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp
index d31af2506..dd14d751e 100644
--- a/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp
+++ b/src/webenginewidgets/render_widget_host_view_qt_delegate_widget.cpp
@@ -254,8 +254,9 @@ void RenderWidgetHostViewQtDelegateWidget::paintGL()
m_rootNode->appendChildNode(paintNode);
}
- m_sgRenderer->setDeviceRect(size());
- m_sgRenderer->setViewportRect(size());
+ QSize deviceSize = size() * devicePixelRatio();
+ m_sgRenderer->setDeviceRect(deviceSize);
+ m_sgRenderer->setViewportRect(deviceSize);
m_sgRenderer->setProjectionMatrixToRect(QRectF(QPointF(), size()));
m_sgRenderer->renderScene(defaultFramebufferObject());
--
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