diff options
Diffstat (limited to 'src/plugins/platforms/direct2d/qwindowsdirect2ddevicecontext.cpp')
-rw-r--r-- | src/plugins/platforms/direct2d/qwindowsdirect2ddevicecontext.cpp | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/plugins/platforms/direct2d/qwindowsdirect2ddevicecontext.cpp b/src/plugins/platforms/direct2d/qwindowsdirect2ddevicecontext.cpp new file mode 100644 index 0000000000..3ff4c9e636 --- /dev/null +++ b/src/plugins/platforms/direct2d/qwindowsdirect2ddevicecontext.cpp @@ -0,0 +1,135 @@ +/**************************************************************************** +** +** 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 "qwindowsdirect2dcontext.h" +#include "qwindowsdirect2dhelpers.h" +#include "qwindowsdirect2ddevicecontext.h" + +#include <wrl.h> + +using Microsoft::WRL::ComPtr; + +QT_BEGIN_NAMESPACE + +class QWindowsDirect2DDeviceContextPrivate { +public: + QWindowsDirect2DDeviceContextPrivate(ID2D1DeviceContext *dc) + : deviceContext(dc) + , refCount(0) + { + if (!dc) { + HRESULT hr = QWindowsDirect2DContext::instance()->d2dDevice()->CreateDeviceContext( + D2D1_DEVICE_CONTEXT_OPTIONS_NONE, + &deviceContext); + if (FAILED(hr)) + qFatal("%s: Couldn't create Direct2D Device Context: %#x", __FUNCTION__, hr); + } + + Q_ASSERT(deviceContext); + } + + void begin() + { + Q_ASSERT(deviceContext); + Q_ASSERT(refCount >= 0); + + if (refCount == 0) + deviceContext->BeginDraw(); + + refCount++; + } + + bool end() + { + Q_ASSERT(deviceContext); + Q_ASSERT(refCount >= 0); + + bool success = true; + refCount--; + + if (refCount == 0) { + D2D1_TAG tag1, tag2; + HRESULT hr = deviceContext->EndDraw(&tag1, &tag2); + + if (FAILED(hr)) { + success = false; + qWarning("%s: EndDraw failed: %#x, tag1: %lld, tag2: %lld", __FUNCTION__, hr, tag1, tag2); + } + } + + return success; + } + + ComPtr<ID2D1DeviceContext> deviceContext; + int refCount; +}; + +QWindowsDirect2DDeviceContext::QWindowsDirect2DDeviceContext(ID2D1DeviceContext *dc) + : d_ptr(new QWindowsDirect2DDeviceContextPrivate(dc)) +{ +} + +QWindowsDirect2DDeviceContext::~QWindowsDirect2DDeviceContext() +{ + +} + +ID2D1DeviceContext *QWindowsDirect2DDeviceContext::get() const +{ + Q_D(const QWindowsDirect2DDeviceContext); + Q_ASSERT(d->deviceContext); + + return d->deviceContext.Get(); +} + +void QWindowsDirect2DDeviceContext::begin() +{ + Q_D(QWindowsDirect2DDeviceContext); + d->begin(); +} + +bool QWindowsDirect2DDeviceContext::end() +{ + Q_D(QWindowsDirect2DDeviceContext); + return d->end(); +} + +QT_END_NAMESPACE |