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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qwindowsdirect2dbitmap.h"
#include "qwindowsdirect2dcontext.h"
#include "qwindowsdirect2dhelpers.h"
#include "qwindowsdirect2ddevicecontext.h"
#include <QtGui/qimage.h>
#include <QtGui/qcolor.h>
#include <wrl.h>
using Microsoft::WRL::ComPtr;
QT_BEGIN_NAMESPACE
class QWindowsDirect2DBitmapPrivate
{
public:
QWindowsDirect2DBitmapPrivate(ID2D1DeviceContext *dc = nullptr,
ID2D1Bitmap1 *bm = nullptr)
: deviceContext(new QWindowsDirect2DDeviceContext(dc))
, bitmap(bm)
{
deviceContext->get()->SetTarget(bm);
}
D2D1_BITMAP_PROPERTIES1 bitmapProperties() const
{
QT_WARNING_PUSH
QT_WARNING_DISABLE_DEPRECATED // see QTBUG-94043
FLOAT dpiX, dpiY;
QWindowsDirect2DContext::instance()->d2dFactory()->GetDesktopDpi(&dpiX, &dpiY);
QT_WARNING_POP
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 = nullptr, int pitch = 0)
{
deviceContext->get()->SetTarget(nullptr);
bitmap.Reset();
D2D1_SIZE_U size = {
UINT32(width), UINT32(height)
};
HRESULT hr = deviceContext->get()->CreateBitmap(size, data, UINT32(pitch),
bitmapProperties(),
bitmap.ReleaseAndGetAddressOf());
if (SUCCEEDED(hr))
deviceContext->get()->SetTarget(bitmap.Get());
else
qWarning("%s: Could not create bitmap: %#lx", __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, nullptr, 0,
properties, &mappingCopy);
if (FAILED(hr)) {
qWarning("%s: Could not create bitmap: %#lx", __FUNCTION__, hr);
return QImage();
}
hr = mappingCopy->CopyFromBitmap(nullptr, bitmap.Get(), nullptr);
if (FAILED(hr)) {
qWarning("%s: Could not copy from bitmap: %#lx", __FUNCTION__, hr);
return QImage();
}
D2D1_MAPPED_RECT mappedRect;
hr = mappingCopy->Map(D2D1_MAP_OPTIONS_READ, &mappedRect);
if (FAILED(hr)) {
qWarning("%s: Could not map: %#lx", __FUNCTION__, hr);
return QImage();
}
return QImage(static_cast<const uchar *>(mappedRect.bits),
int(size.width), int(size.height), int(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(int(size.width), int(size.height));
}
QT_END_NAMESPACE
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