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154 lines
3.9 KiB
C++
154 lines
3.9 KiB
C++
//
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// Color.cpp
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//
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// $Id: //poco/Main/WebWidgets/src/Color.cpp#3 $
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//
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// Library: WebWidgets
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// Package: Core
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// Module: Color
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//
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// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Poco/WebWidgets/Color.h"
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#include "Poco/Format.h"
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#include "Poco/NumberParser.h"
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#include "Poco/Exception.h"
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#include <algorithm>
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#include <cstdio>
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using Poco::format;
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using Poco::NumberParser;
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namespace Poco {
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namespace WebWidgets {
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const Color::Predefined Color::predefined[PREDEFINED_COUNT] =
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{
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{"aqua", 0x00, 0xff, 0xff},
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{"black", 0x00, 0x00, 0x00},
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{"blue", 0x00, 0x00, 0xff},
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{"fuchsia", 0xff, 0x00, 0xff},
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{"green", 0x00, 0x80, 0x00},
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{"grey", 0x80, 0x80, 0x80},
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{"lime", 0x00, 0xff, 0x00},
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{"maroon", 0x80, 0x00, 0x00},
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{"navy", 0x00, 0x00, 0x80},
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{"olive", 0x80, 0x80, 0x00},
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{"purple", 0x80, 0x00, 0x80},
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{"red", 0xff, 0x00, 0x00},
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{"silver", 0xc0, 0xc0, 0xc0},
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{"teal", 0x00, 0x80, 0x80},
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{"white", 0xff, 0xff, 0xff},
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{"yellow", 0xff, 0xff, 0x00}
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};
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Color::Color():
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_red(0),
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_green(0),
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_blue(0)
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{
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}
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Color::Color(Poco::UInt8 red, Poco::UInt8 green, Poco::UInt8 blue):
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_red(red),
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_green(green),
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_blue(blue)
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{
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}
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Color::Color(const std::string& htmlColor)
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{
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poco_assert (htmlColor.size() > 0);
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if (htmlColor[0] == '#' && (htmlColor.size() == 4 || htmlColor.size() == 7))
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{
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std::size_t x = htmlColor.size()/3;
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_red = static_cast<Poco::UInt8>(NumberParser::parse(htmlColor.substr(0, x)));
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_green = static_cast<Poco::UInt8>(NumberParser::parse(htmlColor.substr(1*x, x)));
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_blue = static_cast<Poco::UInt8>(NumberParser::parse(htmlColor.substr(2*x, x)));
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}
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else
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{
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for (int i = 0; i < PREDEFINED_COUNT; ++i)
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{
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if (htmlColor == predefined[i].name)
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{
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_red = predefined[i].red;
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_green = predefined[i].green;
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_blue = predefined[i].blue;
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break;
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}
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}
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throw Poco::InvalidArgumentException("Invalid color", htmlColor);
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}
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}
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Color::Color(const Color& color):
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_red(color._red),
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_green(color._green),
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_blue(color._blue)
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{
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}
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Color::~Color()
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{
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}
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void Color::swap(Color& color)
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{
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std::swap(_red, color._red);
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std::swap(_green, color._green);
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std::swap(_blue, color._blue);
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}
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Color& Color::operator = (const Color& color)
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{
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Color tmp(color);
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swap(tmp);
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return *this;
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}
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std::string Color::asHTML() const
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{
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return format("#%02x%02x%02x", int(_red), int(_green), int(_blue));
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}
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} } // namespace Poco::WebWidgets
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