/// <summary>
/// Draws a 32 bits per pixel image of previously specified width, height and stride, to the associated hwnd
/// </summary>
/// <param name="pImage">The pointer to image buffer</param>
/// <param name="size">The image size</param>
/// <param name="rect">The rectangle in the window to render the image</param>
void ImageRenderer::DrawImage(const BYTE* pImage, const D2D1_SIZE_U& size, const D2D1_RECT_F& rect)
{
// Check image buffer pointer
if (!pImage)
{
return;
}
// Validate image size
if (0 == size.width || 0 == size.height)
{
return;
}
// Ensure bitmap is created.
HRESULT hr = EnsureBitmap(size);
if (SUCCEEDED(hr))
{
// Copy the image from image buffer to D2D1 bit map
hr = m_pBitmap->CopyFromMemory(NULL, pImage, size.width * sizeof(UINT));
if (SUCCEEDED(hr))
{
// Draw the bitmap stretched to the size of the window
m_pRenderTarget->DrawBitmap(m_pBitmap, rect);
}
}
}
bool MCGImageImageRep::LockBitmap(uindex_t p_index, MCGFloat p_density, MCImageBitmap *&r_bitmap)
{
if (p_index > 0)
return false;
if (!EnsureBitmap())
return false;
Retain();
r_bitmap = m_bitmap;
return true;
}
