C++ (Cpp) ParseRGBColor Examples

Example #1

File: HTMLFrameSetElement.cpp Project: sigurdle/FirstProject2

Graphics::Color HTMLFrameSetElement::get_borderColorRGBValue()
{
	String str = getAttribute(WSTR("bordercolor"));

	if (str)
	{
		const WCHAR* p;
		Graphics::Color clr;
		ASSERT(0);
#if 0
		if (ParseRGBColor(str->c_str(), &p, &clr) >= 0)
		{
			if (*p == 0)
			{
				return clr;
			}
		}
#endif
	}

	return Graphics::Color();
}

Example #2

ErrorCode ParseRGBAColor(/*[in]*/ const WCHAR* p, /*[out]*/ const WCHAR** pp, /*[out,retval]*/ Graphics::Color* pVal)
{
	if ((p[0] == 'r') && (p[1] == 'g') && (p[2] == 'b') && (p[3] == 'a'))
	{
		p += 4;

		while (*p && *p == L' ') p++;	// Skip spaces

		if (*p++ != L'(') return -1;	// Error

		while (*p && *p == L' ') p++;	// Skip spaces
		double red = getfnumber(&p);
		if (p == NULL) return -1;
		if (*p == L'%')
		{
			p++;
			red = red * 255 / 100;
		}
		while (*p && *p == L' ') p++;	// Skip spaces
		if (*p++ != L',') return -1;

		while (*p && *p == L' ') p++;	// Skip spaces
		double green = getfnumber(&p);
		if (p == NULL) return -1;
		if (*p == L'%')
		{
			p++;
			green = green * 255 / 100;
		}

		while (*p && *p == L' ') p++;	// Skip spaces
		if (*p++ != L',') return -1;

		while (*p && *p == L' ') p++;	// Skip spaces
		double blue = getfnumber(&p);
		if (p == NULL) return -1;
		if (*p == L'%')
		{
			p++;
			blue = blue * 255 / 100;
		}

		while (*p && *p == L' ') p++;	// Skip spaces
		if (*p++ != L',') return -1;

		while (*p && *p == L' ') p++;	// Skip spaces
		double alpha = getfnumber(&p);
		if (p == NULL) return -1;

		alpha *= 255;

		while (*p && *p == L' ') p++;	// Skip spaces

		if (*p++ != L')') return -1;	// Error

		*pp = p;

		if (red < 0) red = 0;
		else if (red > 255) red = 255;

		if (green < 0) green = 0;
		else if (green > 255) green = 255;

		if (blue < 0) blue = 0;
		else if (blue > 255) blue = 255;

		if (alpha < 0) alpha = 0;
		else if (alpha > 255) alpha = 255;

		*pVal = Graphics::Color((uint8)alpha, (uint8)red, (uint8)green, (uint8)blue);
		return 0;
	}
	else
	{
		return ParseRGBColor(p, pp, pVal);
	}
}