diff options
Diffstat (limited to 'src/plugins/platforms/direct2d/qwindowsdirect2dbitmap.cpp')
| -rw-r--r-- | src/plugins/platforms/direct2d/qwindowsdirect2dbitmap.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/plugins/platforms/direct2d/qwindowsdirect2dbitmap.cpp b/src/plugins/platforms/direct2d/qwindowsdirect2dbitmap.cpp new file mode 100644 index 0000000000..85c56bc73e --- /dev/null +++ b/src/plugins/platforms/direct2d/qwindowsdirect2dbitmap.cpp @@ -0,0 +1,205 @@ +/**************************************************************************** +** +** 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 "qwindowsdirect2dbitmap.h" +#include "qwindowsdirect2dcontext.h" +#include "qwindowsdirect2dhelpers.h" +#include "qwindowsdirect2ddevicecontext.h" + +#include <QtGui/QImage> +#include <QtGui/QColor> + +#include <wrl.h> + +using Microsoft::WRL::ComPtr; + +QT_BEGIN_NAMESPACE + +class QWindowsDirect2DBitmapPrivate +{ +public: + QWindowsDirect2DBitmapPrivate(ID2D1DeviceContext *dc = 0, ID2D1Bitmap1 *bm = 0) + : bitmap(bm) + , deviceContext(new QWindowsDirect2DDeviceContext(dc)) + { + deviceContext->get()->SetTarget(bm); + } + + D2D1_BITMAP_PROPERTIES1 bitmapProperties() const + { + FLOAT dpiX, dpiY; + QWindowsDirect2DContext::instance()->d2dFactory()->GetDesktopDpi(&dpiX, &dpiY); + + return D2D1::BitmapProperties1( + D2D1_BITMAP_OPTIONS_TARGET, + D2D1::PixelFormat(DXGI_FORMAT_B8G8R8A8_UNORM, + D2D1_ALPHA_MODE_PREMULTIPLIED), + dpiX, dpiY); + + } + + bool resize(int width, int height, const void *data = 0, int pitch = 0) + { + deviceContext->get()->SetTarget(0); + bitmap.Reset(); + + D2D1_SIZE_U size = { + width, height + }; + + HRESULT hr = deviceContext->get()->CreateBitmap(size, data, pitch, + bitmapProperties(), + bitmap.ReleaseAndGetAddressOf()); + if (SUCCEEDED(hr)) + deviceContext->get()->SetTarget(bitmap.Get()); + else + qWarning("%s: Could not create bitmap: %#x", __FUNCTION__, hr); + + return SUCCEEDED(hr); + } + + QImage toImage(const QRect &rect) + { + if (!bitmap) + return QImage(); + + ComPtr<ID2D1Bitmap1> mappingCopy; + + HRESULT hr = S_OK; + D2D1_SIZE_U size = bitmap->GetPixelSize(); + + D2D1_BITMAP_PROPERTIES1 properties = bitmapProperties(); + properties.bitmapOptions = D2D1_BITMAP_OPTIONS_CANNOT_DRAW | D2D1_BITMAP_OPTIONS_CPU_READ; + + hr = deviceContext->get()->CreateBitmap(size, NULL, NULL, + properties, &mappingCopy); + if (FAILED(hr)) { + qWarning("%s: Could not create bitmap: %#x", __FUNCTION__, hr); + return QImage(); + } + + hr = mappingCopy->CopyFromBitmap(NULL, bitmap.Get(), NULL); + if (FAILED(hr)) { + qWarning("%s: Could not copy from bitmap: %#x", __FUNCTION__, hr); + return QImage(); + } + + D2D1_MAPPED_RECT mappedRect; + hr = mappingCopy->Map(D2D1_MAP_OPTIONS_READ, &mappedRect); + if (FAILED(hr)) { + qWarning("%s: Could not map: %#x", __FUNCTION__, hr); + return QImage(); + } + + return QImage(static_cast<const uchar *>(mappedRect.bits), + size.width, size.height, mappedRect.pitch, + QImage::Format_ARGB32_Premultiplied).copy(rect); + } + + QScopedPointer<QWindowsDirect2DDeviceContext> deviceContext; + ComPtr<ID2D1Bitmap1> bitmap; +}; + +QWindowsDirect2DBitmap::QWindowsDirect2DBitmap() + : d_ptr(new QWindowsDirect2DBitmapPrivate) +{ +} + +QWindowsDirect2DBitmap::QWindowsDirect2DBitmap(ID2D1Bitmap1 *bitmap, ID2D1DeviceContext *dc) + : d_ptr(new QWindowsDirect2DBitmapPrivate(dc, bitmap)) +{ +} + +QWindowsDirect2DBitmap::~QWindowsDirect2DBitmap() +{ +} + +bool QWindowsDirect2DBitmap::resize(int width, int height) +{ + Q_D(QWindowsDirect2DBitmap); + return d->resize(width, height); +} + +bool QWindowsDirect2DBitmap::fromImage(const QImage &image, Qt::ImageConversionFlags flags) +{ + Q_D(QWindowsDirect2DBitmap); + + QImage converted = image.convertToFormat(QImage::Format_ARGB32_Premultiplied, flags); + return d->resize(converted.width(), converted.height(), + converted.constBits(), converted.bytesPerLine()); +} + +ID2D1Bitmap1* QWindowsDirect2DBitmap::bitmap() const +{ + Q_D(const QWindowsDirect2DBitmap); + return d->bitmap.Get(); +} + +QWindowsDirect2DDeviceContext *QWindowsDirect2DBitmap::deviceContext() const +{ + Q_D(const QWindowsDirect2DBitmap); + return d->deviceContext.data(); +} + +void QWindowsDirect2DBitmap::fill(const QColor &color) +{ + Q_D(QWindowsDirect2DBitmap); + + d->deviceContext->begin(); + d->deviceContext->get()->Clear(to_d2d_color_f(color)); + d->deviceContext->end(); +} + +QImage QWindowsDirect2DBitmap::toImage(const QRect &rect) +{ + Q_D(QWindowsDirect2DBitmap); + return d->toImage(rect); +} + +QSize QWindowsDirect2DBitmap::size() const +{ + Q_D(const QWindowsDirect2DBitmap); + + D2D1_SIZE_U size = d->bitmap->GetPixelSize(); + return QSize(size.width, size.height); +} + +QT_END_NAMESPACE |