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// Color.cc for Fluxbox window manager
// Copyright (c) 2002 - 2003 Henrik Kinnunen (fluxgen(at)users.sourceforge.net)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
// $Id: Color.cc,v 1.10 2004/04/25 16:12:21 fluxgen Exp $
#include "Color.hh"
#include "App.hh"
#include "StringUtil.hh"
#include <iostream>
using namespace std;
namespace {
unsigned char maxValue(unsigned short colval) {
if (colval == 65535)
return 0xFF;
return static_cast<unsigned char>(colval/0xFF);
}
};
namespace FbTk {
Color::Color():
m_red(0), m_green(0), m_blue(0),
m_pixel(0),
m_allocated(false),
m_screen(0) {
}
Color::Color(const Color &col_copy):
m_red(0), m_green(0), m_blue(0),
m_pixel(0),
m_allocated(false), m_screen(0) {
copy(col_copy);
}
Color::Color(unsigned short red, unsigned short green, unsigned short blue, int screen):
m_red(red), m_green(green), m_blue(blue),
m_pixel(0), m_allocated(false),
m_screen(screen) {
allocate(red, green, blue, screen);
}
Color::Color(const char *color_string, int screen):
m_red(0), m_green(0), m_blue(0),
m_pixel(0),
m_allocated(false),
m_screen(screen) {
setFromString(color_string, screen);
}
Color::~Color() {
free();
}
bool Color::setFromString(const char *color_string, int screen) {
if (color_string == 0) {
free();
return false;
}
string color_string_tmp = color_string;
StringUtil::removeFirstWhitespace(color_string_tmp);
StringUtil::removeTrailingWhitespace(color_string_tmp);
Display *disp = App::instance()->display();
Colormap colm = DefaultColormap(disp, screen);
XColor color;
if (! XParseColor(disp, colm, color_string_tmp.c_str(), &color))
return false;
else if (! XAllocColor(disp, colm, &color))
return false;
setPixel(color.pixel);
setRGB(maxValue(color.red),
maxValue(color.green),
maxValue(color.blue));
setAllocated(true);
m_screen = screen;
return true;
}
Color &Color::operator = (const Color &col_copy) {
// check for aliasing
if (this == &col_copy)
return *this;
copy(col_copy);
return *this;
}
void Color::free() {
if (isAllocated()) {
unsigned long pixel = m_pixel;
Display *disp = App::instance()->display();
XFreeColors(disp, DefaultColormap(disp, m_screen), &pixel, 1, 0);
setPixel(0);
setRGB(0, 0, 0);
setAllocated(false);
}
}
void Color::copy(const Color &col_copy) {
if (!col_copy.isAllocated()) {
free();
setRGB(col_copy.red(), col_copy.green(), col_copy.blue());
setPixel(col_copy.pixel());
return;
}
free();
allocate(col_copy.red()*0xFF,
col_copy.green()*0xFF,
col_copy.blue()*0xFF,
col_copy.m_screen);
}
void Color::allocate(unsigned short red, unsigned short green, unsigned short blue, int screen) {
Display *disp = App::instance()->display();
XColor color;
// fill xcolor structure
color.red = red;
color.green = green;
color.blue = blue;
if (!XAllocColor(disp, DefaultColormap(disp, screen), &color)) {
cerr<<"FbTk::Color: Allocation error."<<endl;
} else {
setRGB(maxValue(color.red),
maxValue(color.green),
maxValue(color.blue));
setPixel(color.pixel);
setAllocated(true);
}
m_screen = screen;
}
void Color::setRGB(unsigned short red, unsigned short green, unsigned short blue) {
m_red = red;
m_green = green;
m_blue = blue;
}
};
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