void paint (Graphics& g)
{
if (colours.isNull())
{
const int width = getWidth() / 2;
const int height = getHeight() / 2;
colours = Image (Image::RGB, width, height, false);
Image::BitmapData pixels (colours, Image::BitmapData::writeOnly);
for (int y = 0; y < height; ++y)
{
const float val = 1.0f - y / (float) height;
for (int x = 0; x < width; ++x)
{
const float sat = x / (float) width;
pixels.setPixelColour (x, y, Colour (h, sat, val, 1.0f));
}
}
}
g.setOpacity (1.0f);
g.drawImage (colours, edge, edge, getWidth() - edge * 2, getHeight() - edge * 2,
0, 0, colours.getWidth(), colours.getHeight());
}
Image ImageType::convert (const Image& source) const
{
if (source.isNull() || getTypeID() == (std::unique_ptr<ImageType> (source.getPixelData()->createType())->getTypeID()))
return source;
const Image::BitmapData src (source, Image::BitmapData::readOnly);
Image newImage (create (src.pixelFormat, src.width, src.height, false));
Image::BitmapData dest (newImage, Image::BitmapData::writeOnly);
if (src.pixelStride == dest.pixelStride && src.pixelFormat == dest.pixelFormat)
{
for (int y = 0; y < dest.height; ++y)
memcpy (dest.getLinePointer (y), src.getLinePointer (y), (size_t) dest.lineStride);
}
else
{
for (int y = 0; y < dest.height; ++y)
for (int x = 0; x < dest.width; ++x)
dest.setPixelColour (x, y, src.getPixelColour (x, y));
}
return newImage;
}