// Color.cc for Fluxbox window manager // Copyright (c) 2002 - 2006 Henrik Kinnunen (fluxgen at fluxbox dot org) // // 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. // $Id$ #include "Color.hh" #include "App.hh" #include "StringUtil.hh" #include "I18n.hh" #include <iostream> using std::cerr; using std::endl; using std::string; namespace { inline unsigned char maxValue(unsigned short colval) { return colval == 65535 ? 0xFF : 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; } bool Color::validColorString(const char *color_string, int screen) { XColor color; Display *disp = App::instance()->display(); Colormap colm = DefaultColormap(disp, screen); // trim white space string color_string_tmp = color_string; StringUtil::removeFirstWhitespace(color_string_tmp); StringUtil::removeTrailingWhitespace(color_string_tmp); return XParseColor(disp, colm, color_string_tmp.c_str(), &color) != 0; } 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; } allocate(col_copy.red()*0x101, col_copy.green()*0x101, col_copy.blue()*0x101, 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)) { _FB_USES_NLS; cerr<<"FbTk::Color: "<<_FBTK_CONSOLETEXT(Error, ColorAllocation, "Allocation error.", "XAllocColor failed...")<<endl; } else { free(); 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; } };