GiColor GiGraphics::calcPenColor(const GiColor& color) const
{
GiColor ret = color;
if (kColorMono == m_impl->colorMode)
{
const GiColor& bk = getBkColor();
if (color != bk)
ret.set(~bk.r, ~bk.g, ~bk.b);
}
if (m_impl->drawColors == 2 // 黑白
|| kColorGray == m_impl->colorMode)
{
unsigned char by = (unsigned char)(
(77 * ret.r + 151 * ret.g + 28 * ret.b + 128) / 256);
ret.set(by, by, by);
}
if (m_impl->drawColors > 0 && m_impl->drawColors < 8
&& m_impl->canvas) // 少于256色
{
ret = m_impl->canvas->getNearestColor(ret);
}
return ret;
}
GiColor GiGraphics::calcPenColor(const GiColor& color) const
{
GiColor ret = color;
if (isGrayMode()) {
unsigned char by = (unsigned char)(
(77 * ret.r + 151 * ret.g + 28 * ret.b + 128) / 256);
ret.set(by, by, by);
}
return ret;
}
GiColor GiCanvasGdip::getNearestColor(const GiColor& color) const
{
GiColor ret = color;
if (m_attribDC != NULL)
{
COLORREF cr = ::GetNearestColor(m_attribDC, RGB(ret.r, ret.g, ret.b));
ret.set(GetRValue(cr), GetGValue(cr), GetBValue(cr));
}
else if (m_draw->getDrawGs() != NULL)
{
G::Color c(ret.r, ret.g, ret.b);
m_draw->getDrawGs()->GetNearestColor(&c);
ret.set(c.GetR(), c.GetG(), c.GetB());
}
return ret;
}
