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/****************************************************************************
**
** Copyright (C) 2014 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.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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);
deviceContext->SetUnitMode(D2D1_UNIT_MODE_PIXELS);
}
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
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