static WinString ToCanvasTrimmingDelimiter(uint32_t value)
{
// TODO #1658: Do the unicode conversion properly.
// http://www.unicode.org/faq/utf_bom.html#utf16-3. This code needs its
// own set of tests.
WinStringBuilder builder;
if (value == 0)
{
return WinString();
}
else if (value <= 0x0000FFFF)
{
auto buffer = builder.Allocate(1);
buffer[0] = static_cast<wchar_t>(value);
}
else
{
auto buffer = builder.Allocate(2);
*(reinterpret_cast<uint32_t*>(buffer)) = value;
}
return builder.Get();
}
static WinString GetLocaleName(IDWriteTextFormat* format)
{
WinStringBuilder stringBuilder;
auto length = format->GetLocaleNameLength() + 1;
auto buffer = stringBuilder.Allocate(length);
ThrowIfFailed(format->GetLocaleName(buffer, length));
return stringBuilder.Get();
}
void SetPixelColorsImpl(
ComPtr<ID2D1Bitmap1> const& d2dBitmap,
D2D1_RECT_U const& subRectangle,
uint32_t valueCount,
Color *valueElements)
{
CheckInPointer(valueElements);
VerifyWellFormedSubrectangle(subRectangle, d2dBitmap->GetPixelSize());
const unsigned int subRectangleWidth = subRectangle.right - subRectangle.left;
const unsigned int subRectangleHeight = subRectangle.bottom - subRectangle.top;
const uint32_t expectedArraySize = subRectangleWidth * subRectangleHeight;
if (valueCount != expectedArraySize)
{
WinStringBuilder message;
message.Format(Strings::WrongArrayLength, expectedArraySize, valueCount);
ThrowHR(E_INVALIDARG, message.Get());
}
if (d2dBitmap->GetPixelFormat().format != DXGI_FORMAT_B8G8R8A8_UNORM)
{
ThrowHR(E_INVALIDARG, Strings::PixelColorsFormatRestriction);
}
ScopedBitmapMappedPixelAccess bitmapPixelAccess(d2dBitmap.Get(), D3D11_MAP_WRITE, &subRectangle);
const unsigned int destSizeInPixels = subRectangleWidth * subRectangleHeight;
ComArray<Color> array(destSizeInPixels);
byte* destRowStart = static_cast<byte*>(bitmapPixelAccess.GetLockedData());
for (unsigned int y = 0; y < subRectangleHeight; y++)
{
for (unsigned int x = 0; x < subRectangleWidth; x++)
{
uint32_t* destPixel = reinterpret_cast<uint32_t*>(&destRowStart[x * 4]);
Color& sourceColor = valueElements[y * subRectangleWidth + x];
*destPixel =
(static_cast<uint32_t>(sourceColor.B) << 0) |
(static_cast<uint32_t>(sourceColor.G) << 8) |
(static_cast<uint32_t>(sourceColor.R) << 16) |
(static_cast<uint32_t>(sourceColor.A) << 24);
}
destRowStart += bitmapPixelAccess.GetStride();
}
}
void SetPixelBytesImpl(
ComPtr<ID2D1Bitmap1> const& d2dBitmap,
D2D1_RECT_U const& subRectangle,
uint32_t valueCount,
uint8_t* valueElements)
{
CheckInPointer(valueElements);
VerifyWellFormedSubrectangle(subRectangle, d2dBitmap->GetPixelSize());
const unsigned int subRectangleWidth = subRectangle.right - subRectangle.left;
const unsigned int subRectangleHeight = subRectangle.bottom - subRectangle.top;
const unsigned int bytesPerPixel = GetBytesPerPixel(d2dBitmap->GetPixelFormat().format);
const unsigned int bytesPerRow = bytesPerPixel * subRectangleWidth;
uint32_t expectedArraySize = subRectangleWidth * subRectangleHeight * bytesPerPixel;
if (valueCount != expectedArraySize)
{
WinStringBuilder message;
message.Format(Strings::WrongArrayLength, expectedArraySize, valueCount);
ThrowHR(E_INVALIDARG, message.Get());
}
ScopedBitmapMappedPixelAccess bitmapPixelAccess(d2dBitmap.Get(), D3D11_MAP_WRITE, &subRectangle);
byte* destRowStart = static_cast<byte*>(bitmapPixelAccess.GetLockedData());
byte* sourceRowStart = valueElements;
for (unsigned int y = subRectangle.top; y < subRectangle.bottom; y++)
{
const unsigned int byteCount = (subRectangle.right - subRectangle.left) * bytesPerPixel;
const unsigned int positionInBuffer = static_cast<unsigned int>(sourceRowStart - valueElements);
const unsigned int bytesLeftInBuffer = valueCount - positionInBuffer;
memcpy_s(destRowStart, bytesLeftInBuffer, sourceRowStart, byteCount);
destRowStart += bitmapPixelAccess.GetStride();
sourceRowStart += bytesPerRow;
}
}
