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| |
| #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 |
| { |
| 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 = 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 |