143 lines
4.6 KiB
C++
143 lines
4.6 KiB
C++
#pragma once
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#include <cairo/cairo.h>
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#include <map>
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#include "cairo/font.hpp"
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#include "common.hpp"
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#include "utils/string.hpp"
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POLYBAR_NS
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namespace cairo {
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namespace utils {
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/**
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* @see <cairo/cairo.h>
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*/
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cairo_operator_t str2operator(const string& mode, cairo_operator_t fallback) {
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if (mode.empty()) {
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return fallback;
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}
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static std::map<string, cairo_operator_t> modes;
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if (modes.empty()) {
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modes["clear"s] = CAIRO_OPERATOR_CLEAR;
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modes["source"s] = CAIRO_OPERATOR_SOURCE;
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modes["over"s] = CAIRO_OPERATOR_OVER;
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modes["in"s] = CAIRO_OPERATOR_IN;
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modes["out"s] = CAIRO_OPERATOR_OUT;
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modes["atop"s] = CAIRO_OPERATOR_ATOP;
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modes["dest"s] = CAIRO_OPERATOR_DEST;
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modes["dest-over"s] = CAIRO_OPERATOR_DEST_OVER;
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modes["dest-in"s] = CAIRO_OPERATOR_DEST_IN;
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modes["dest-out"s] = CAIRO_OPERATOR_DEST_OUT;
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modes["dest-atop"s] = CAIRO_OPERATOR_DEST_ATOP;
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modes["xor"s] = CAIRO_OPERATOR_XOR;
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modes["add"s] = CAIRO_OPERATOR_ADD;
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modes["saturate"s] = CAIRO_OPERATOR_SATURATE;
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modes["multiply"s] = CAIRO_OPERATOR_MULTIPLY;
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modes["screen"s] = CAIRO_OPERATOR_SCREEN;
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modes["overlay"s] = CAIRO_OPERATOR_OVERLAY;
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modes["darken"s] = CAIRO_OPERATOR_DARKEN;
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modes["lighten"s] = CAIRO_OPERATOR_LIGHTEN;
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modes["color-dodge"s] = CAIRO_OPERATOR_COLOR_DODGE;
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modes["color-burn"s] = CAIRO_OPERATOR_COLOR_BURN;
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modes["hard-light"s] = CAIRO_OPERATOR_HARD_LIGHT;
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modes["soft-light"s] = CAIRO_OPERATOR_SOFT_LIGHT;
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modes["difference"s] = CAIRO_OPERATOR_DIFFERENCE;
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modes["exclusion"s] = CAIRO_OPERATOR_EXCLUSION;
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modes["hsl-hue"s] = CAIRO_OPERATOR_HSL_HUE;
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modes["hsl-saturation"s] = CAIRO_OPERATOR_HSL_SATURATION;
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modes["hsl-color"s] = CAIRO_OPERATOR_HSL_COLOR;
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modes["hsl-luminosity"s] = CAIRO_OPERATOR_HSL_LUMINOSITY;
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}
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auto it = modes.find(mode);
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return it != modes.end() ? it->second : fallback;
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}
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/**
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* @brief Create a UCS-4 codepoint from a utf-8 encoded string
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*/
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bool utf8_to_ucs4(const unsigned char* src, unicode_charlist& result_list) {
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if (!src) {
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return false;
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}
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const unsigned char* first = src;
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while (*first) {
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int len = 0;
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unsigned long result = 0;
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if ((*first >> 7) == 0) {
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len = 1;
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result = *first;
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} else if ((*first >> 5) == 6) {
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len = 2;
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result = *first & 31;
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} else if ((*first >> 4) == 14) {
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len = 3;
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result = *first & 15;
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} else if ((*first >> 3) == 30) {
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len = 4;
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result = *first & 7;
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} else {
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return false;
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}
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const unsigned char* next;
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for (next = first + 1; *next && ((*next >> 6) == 2) && (next - first < len); next++) {
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result = result << 6;
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result |= *next & 63;
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}
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unicode_character uc_char;
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uc_char.codepoint = result;
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uc_char.offset = first - src;
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uc_char.length = next - first;
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result_list.push_back(uc_char);
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first = next;
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}
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return true;
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}
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/**
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* @brief Convert a UCS-4 codepoint to a utf-8 encoded string
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*/
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size_t ucs4_to_utf8(char* utf8, unsigned int ucs) {
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if (ucs <= 0x7f) {
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*utf8 = ucs;
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return 1;
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} else if (ucs <= 0x07ff) {
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*(utf8++) = ((ucs >> 6) & 0xff) | 0xc0;
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*utf8 = (ucs & 0x3f) | 0x80;
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return 2;
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} else if (ucs <= 0xffff) {
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*(utf8++) = ((ucs >> 12) & 0x0f) | 0xe0;
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*(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
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*utf8 = (ucs & 0x3f) | 0x80;
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return 3;
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} else if (ucs <= 0x1fffff) {
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*(utf8++) = ((ucs >> 18) & 0x07) | 0xf0;
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*(utf8++) = ((ucs >> 12) & 0x3f) | 0x80;
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*(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
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*utf8 = (ucs & 0x3f) | 0x80;
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return 4;
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} else if (ucs <= 0x03ffffff) {
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*(utf8++) = ((ucs >> 24) & 0x03) | 0xf8;
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*(utf8++) = ((ucs >> 18) & 0x3f) | 0x80;
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*(utf8++) = ((ucs >> 12) & 0x3f) | 0x80;
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*(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
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*utf8 = (ucs & 0x3f) | 0x80;
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return 5;
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} else if (ucs <= 0x7fffffff) {
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*(utf8++) = ((ucs >> 30) & 0x01) | 0xfc;
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*(utf8++) = ((ucs >> 24) & 0x3f) | 0x80;
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*(utf8++) = ((ucs >> 18) & 0x3f) | 0x80;
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*(utf8++) = ((ucs >> 12) & 0x3f) | 0x80;
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*(utf8++) = ((ucs >> 6) & 0x3f) | 0x80;
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*utf8 = (ucs & 0x3f) | 0x80;
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return 6;
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} else {
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return 0;
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}
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}
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}
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}
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POLYBAR_NS_END
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