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0
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1 /*
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27
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2 * Copyright (c) 2004 Kazunori "jagarl" Ueno
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0
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3 * Copyright (c) 2000, 2001 Yuki Sawada
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4 * All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions
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8 * are met:
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 * 2. Redistributions in binary form must reproduce the above copyright
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12 * notice, this list of conditions and the following disclaimer in the
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13 * documentation and/or other materials provided with the distribution.
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14 * 3. The name of the author may not be used to endorse or promote products
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15 * derived from this software without specific prior written permission.
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16 *
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17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include <stdlib.h>
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30
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31 #include "font.h"
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32 #include "font_peer.h"
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33
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34 #if USE_X11
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35
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36 #include <sys/ipc.h>
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37 #include <sys/shm.h>
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38
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39 #include <X11/Xlib.h>
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40 #include <X11/Xutil.h>
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41 #include <X11/extensions/XShm.h>
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42 #include <stdio.h>
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43 #include<iostream>
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44
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45 #include<vector>
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46 #include<map>
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47 //#include<iostream>
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48 #include<sstream>
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49 #include <string>
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50 #include <stdexcept>
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51
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52 using namespace std;
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53
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54 namespace XKFont {
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55 inline int read_little_endian_int(const char* buf) {
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56 const unsigned char *p = (const unsigned char *) buf;
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57 return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0];
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58 }
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59
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60 /***********************************
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61 **
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62 ** Fontinfo / FontSetInfo
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63 **
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64 ** fontset から特定 pixel size を持つ
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65 ** 別のfontsetを作成するためのクラス
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66 */
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67 struct FontInfo {
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68 std::map<int, string> fontlist;
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69 FontInfo(Display* display, const char* fontname_orig);
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70 string Search(int pixsize);
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71 };
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72 struct FontSetInfo {
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73 std::vector<FontInfo*> fontlist;
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74 FontSetInfo(Display* display, const char* fontset_orig);
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75 string Search(int pixsize);
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76 ~FontSetInfo();
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77 };
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78
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79
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80 /***********************************
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81 **
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82 ** Methods of Fontinfo / FontSetInfo
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83 **
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84 */
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85 FontInfo::FontInfo(Display* display, const char* fontname_orig) {
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86 /* フォントの大きさ関係の情報を消去 */
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87 int i;
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88 char* fontname = new char[strlen(fontname_orig)+50];
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89 int minus_count = 0; bool is_skip = false; int fc = 0;
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90 for (i=0; fontname_orig[i]!=0; i++) {
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91 if (fontname_orig[i] == '-') {
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92 minus_count++;
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93 if (minus_count >= 7 && minus_count <= 12) {
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94 fontname[fc++] = '-';
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95 fontname[fc++] = '*';
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96 is_skip = true;
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97 } else {
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98 is_skip = false;
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99 }
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100 }
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101 if (! is_skip) fontname[fc++] = fontname_orig[i];
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102 }
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103 /* フォント情報を得る */
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104 fontname[fc] = 0;
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105 int count;
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106 char** fontnamelist = XListFonts(display, fontname, 100, &count);
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107 for (i=0; i<count; i++) {
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108 char* curfont = fontnamelist[i];
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109 /* fontname から pixel size 情報を得る */
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110 int j; int minus_count = 0;
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111 for (j=0; curfont[j] != 0; j++) {
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112 if (curfont[j] == '-') minus_count++;
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113 if (minus_count == 7) {
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114 int pixsize = atoi(curfont+j+1);
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115 if (fontlist.find(pixsize) == fontlist.end()) {
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116 fontlist[pixsize] = string(curfont);
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117 }
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118 break;
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119 }
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120 }
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121 }
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122 /* 検索に失敗した場合、とりあえず fontname を入れておく */
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123 if (fontlist.find(0) == fontlist.end()) {
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124 fontlist[0] = string(fontname);
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125 }
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126 XFreeFontNames(fontnamelist);
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127 delete[] fontname;
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128 return;
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129 }
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130 string FontInfo::Search(int pixsize) {
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131 int i;
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132 /* pixsize に近いフォントが(あれば)帰す */
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133 if (fontlist.find(pixsize) != fontlist.end()) return fontlist[pixsize];
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134 for (i=1; i<4; i++) {
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135 if (fontlist.find(pixsize-i) != fontlist.end()) return fontlist[pixsize-i];
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136 if (fontlist.find(pixsize+i) != fontlist.end()) return fontlist[pixsize+i];
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137 }
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138 /* 見つからない：fontlist[0] を加工して帰す */
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139 /* pt/xres/yres などのフィールドに '-0-' というのがあれば '-*-'に変換
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140 ** pixsize は与えられた pixsize にする
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141 */
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142 string basefont_s = fontlist[0];
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143 const char* basefont = basefont_s.c_str();
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144 char* retfont = new char[strlen(basefont)+50];
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145 int minus_count = 0; int rc = 0; bool is_skip = false;
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146 for (i=0; basefont[i] != 0; i++) {
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147 if (basefont[i] == '-') {
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148 minus_count++;
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149 is_skip = false;
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150 if (minus_count == 7) {
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151 sprintf(retfont+rc, "-%d", pixsize);
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152 rc = strlen(retfont);
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153 is_skip = true;
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154 } else if (minus_count > 7 && minus_count <= 12) {
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155 if (basefont[i+1] == '0' && basefont[i+2] == '-') {
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156 retfont[rc++]='-';
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157 retfont[rc++]='*';
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158 is_skip = true;
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159 }
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160 }
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161 }
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162 if (! is_skip) retfont[rc++] = basefont[i];
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163 }
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164 retfont[rc] = 0;
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165 string retfont_str = string(retfont);
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166 delete[] retfont;
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167 return retfont_str;
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168 }
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169
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170 FontSetInfo::FontSetInfo(Display* display, const char* fontset_orig) {
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171 char* fontset = new char[strlen(fontset_orig)+1];
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172 strcpy(fontset, fontset_orig);
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173 char* cur = fontset;
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174 while(strchr(cur, ',')) {
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175 char* font = cur;
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176 cur = strchr(cur, ',');
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177 *cur++ = '\0';
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178 fontlist.push_back(new FontInfo(display, font));
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179 }
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180 fontlist.push_back(new FontInfo(display, cur));
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181 delete[] fontset;
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182 return;
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183 }
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184 FontSetInfo::~FontSetInfo() {
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185 std::vector<FontInfo*>::iterator it;
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186 for (it=fontlist.begin(); it != fontlist.end(); it++) {
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187 delete (*it);
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188 }
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189 return;
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190 }
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191 string FontSetInfo::Search(int pixsize) {
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192 stringstream s;
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193 std::vector<FontInfo*>::iterator it;
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194 for (it=fontlist.begin(); it != fontlist.end(); it++) {
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195 if (it != fontlist.begin()) s << ",";
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196 s << (*it)->Search(pixsize);
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197 }
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198 s<<ends;
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199 return string(s.str());
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200 }
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201
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202 /****************************************
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203 **
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204 ** FontPeerX11
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205 */
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206 Display* PeerX11::display = 0;
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207 void PeerX11::InitDisplay(Display* _d) {
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208 /* d = ((GdkWindowPrivate*)(top_window.gdkobj()))->xdisplay; */
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209 display = _d;
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210 }
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211
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212 void PeerX11::OpenDisplay(void) {
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213 if (display) return;
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214
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215 char* display_name = getenv("DISPLAY");
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216 if (display_name == 0) display_name = ":0";
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217
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218 display = XOpenDisplay(display_name);
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219
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220 if (display == 0) {
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221 string err = string("XKFont::PeerX11:OpenDisplay() : Cannot open X display ") + display_name;
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222 throw std::invalid_argument(err);
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223 }
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224 }
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225
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226 inline int MAX(int a, int b) {
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227 if (a > b) return a;
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228 else return b;
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229 }
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230
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231 PeerX11::PeerX11(const char* fontname, int index, int fontsize, int _vsize) :
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232 fontset(0), gc(0), canvas(0), image(0), colortable(0) {
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233 OpenDisplay();
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234
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235 int scr = DefaultScreen(display);
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236 Window w = RootWindow(display, scr);
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237 Colormap cmap = DefaultColormap(display, scr);
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238 visual = DefaultVisual(display, scr);
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239
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240 if (visual->c_class != TrueColor && visual->c_class != DirectColor) {
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241 string err = "XKFont::PeerX11:PeerX11() : No supported Color mode of X : neither TrueColor nor DirectColor";
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242 throw std::runtime_error(err);
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243 }
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244 /* 色の初期化 */
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245 white = visual->red_mask | visual->green_mask | visual->blue_mask;
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246 black = 0;
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247 if (visual->green_mask == 0) {
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248 string err = "XKFont::PeerX11:PeerX11() : Invalid Visual on X";
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249 throw std::runtime_error(err);
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250 }
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251 shift = 0;
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252 mask = visual->green_mask;
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253 while(mask & 0x01) { shift++; mask >>= 1; }
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254
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255 int tablesize = mask+1;
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256 colortable = new int[tablesize];
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257 int i; for (i=0; i< tablesize; i++) {
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258 colortable[i] = i*255/tablesize;
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259 }
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260 XSupportsLocale();
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261
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262 /* font 読み込み */
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263 FontSetInfo fsinfo(display,fontname);
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264 string fontset_name = fsinfo.Search(fontsize);
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265 char** missing_cl; int missing_cc; char* def_s;
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266 printf("fontset %s\n",fontset_name.c_str());
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267 fontset = XCreateFontSet(display, fontset_name.c_str(), &missing_cl, &missing_cc, &def_s);
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268
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269 if (fontset == 0) {
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270 delete[] colortable;
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271 string err = string("XKFont::PeerX11:PeerX11() : Cannot create fontset ");
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272 err += fontset_name; err += " (font name "; err += fontname; err += ")";
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273 throw std::invalid_argument(err);
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274 }
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275
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276 if (missing_cc != 0) {
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277 cerr << "XKFont::PeerX11:PeerX11() : Cannot found some fonts in the fontset"<<endl;
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278 cerr << " fontset: "<<fontset_name<<endl;
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279 cerr << " not found fonts:"<<endl;
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280 int i; for (i=0; i<missing_cc; i++) {
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281 cerr << " " << missing_cl[i] << endl;
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282 }
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283 }
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284
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285 XFontSetExtents* extents = XExtentsOfFontSet(fontset);
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286
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287 width = extents->max_ink_extent.width;
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288 height = extents->max_ink_extent.height;
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289
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290 /* calculate ascent / descent */
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291 XFontStruct** font_structs; char** font_names;
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292 int num_fonts = XFontsOfFontSet(fontset, &font_structs, &font_names);
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293 printf("locale %s\n",XLocaleOfOM(XOMOfOC(fontset)));
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294
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295 ascent = 0;
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296 for (i=0; i<num_fonts; i++) {
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297 ascent = MAX(ascent, font_structs[i]->ascent);
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298 }
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299
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300 /* 描画用の pixmap を作成 */
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301 XGCValues gc_values; unsigned int gc_values_mask;
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302 gc_values.function = GXcopy;
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303 gc_values.fill_style = FillSolid;
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304 gc_values.arc_mode = ArcPieSlice;
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305 gc_values.subwindow_mode = ClipByChildren;
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306 gc_values.graphics_exposures = False;
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307 gc_values.foreground = white;
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308 gc_values.background = black;
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309 gc_values_mask = GCFunction | GCFillStyle | GCArcMode | GCSubwindowMode | GCGraphicsExposures | GCForeground | GCBackground;
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310 gc = XCreateGC(display, w, gc_values_mask, &gc_values);
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311
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312 canvas = XCreatePixmap(display, w, width, height, DefaultDepth(display, scr));
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313
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314 /* イメージ転送用の image の作成 */
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315 int ignore;
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316 use_shm = false;
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317 if (XShmQueryExtension(display) == True) {
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318 x_shm_info.shmid = -1;
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319 x_shm_info.shmaddr = (char*)-1;
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320 image = XShmCreateImage(display, visual, DefaultDepth(display, scr), ZPixmap, NULL, &x_shm_info, width, height);
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321 if (image) {
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322 x_shm_info.shmid = shmget(IPC_PRIVATE, image->bytes_per_line*image->height, IPC_CREAT | 0600);
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323 if (x_shm_info.shmid == -1) {
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324 XDestroyImage(image);
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325 image = 0;
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326 goto no_shm;
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327 }
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328 x_shm_info.readOnly = False;
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329 x_shm_info.shmaddr = (char*) shmat(x_shm_info.shmid, 0, 0);
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330 image->data = x_shm_info.shmaddr;
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331 if (x_shm_info.shmaddr == (char*) -1) {
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332 XDestroyImage(image);
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333 shmctl(x_shm_info.shmid, IPC_RMID, 0);
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334 image = 0;
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335 goto no_shm;
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336 }
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337 XShmAttach(display, &x_shm_info);
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338 XSync(display, False);
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339 shmctl(x_shm_info.shmid, IPC_RMID, 0);
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340 use_shm = true;
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341 }
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342 }
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343 no_shm:
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344 if (image == 0) {
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345 use_shm = false;
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346 image = XCreateImage(display, visual, DefaultDepth(display, scr), ZPixmap, 0, 0, width, height, 32, 0);
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347 image->data = (char*)malloc(image->bytes_per_line * image->height);
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348 if (image->data == 0) {
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349 XDestroyImage(image);
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350 image = 0;
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351 throw bad_alloc();
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352 }
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353 }
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354 Glyph g;
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355 GlyphCreate(0xa1a2,&g);
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356 GlyphCreate(0xa4a3,&g);
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357 }
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358
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359 PeerX11::~PeerX11() {
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360 if (display) {
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361 if (fontset) XFreeFontSet(display, fontset);
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362 if (gc) XFlushGC(display, gc);
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363 if (canvas) XFreePixmap(display, canvas);
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364 if (image) {
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365 if (use_shm) XShmDetach(display, &x_shm_info);
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366 XDestroyImage(image);
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367 if (use_shm) shmdt(x_shm_info.shmaddr);
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368 }
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369 if (colortable) delete[] colortable;
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370 }
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371 }
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372
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373 bool PeerX11::GlyphCreate(unsigned int code, Glyph* glyph) {
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374 XRectangle ink, logic;
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375
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376 char str[3]={0,0,0};
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377
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378 if ( (code>>8)&0xff){
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379 str[0]=code>>8;
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380 str[1]=code & 0xff;
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381 } else {
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382 str[0]=code;
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383 }
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384
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385 XmbTextExtents(fontset, str, strlen(str),&ink,&logic);
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386 int cwidth = logic.width;
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387 XmbDrawImageString(display, canvas, fontset, gc, 0, -logic.y, str, strlen(str));
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388 if (use_shm) {
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389 XShmGetImage(display, canvas, image, 0, 0, AllPlanes);
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390 } else {
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|
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391 XGetSubImage(display, canvas, 0, 0, width, height, AllPlanes, ZPixmap, image, 0, 0);
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392 }
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|
|
393 XSync(display, False);
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394 glyph->bitmap.buffer = new unsigned char[logic.width*logic.height];
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|
|
395 int i;
|
|
|
396 unsigned char* mem = (unsigned char*) image->data;
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|
|
397 unsigned char* dest = glyph->bitmap.buffer;
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|
|
398 int bpp = image->bytes_per_line/width;
|
|
|
399 int bpl = image->bytes_per_line;
|
|
|
400 for (i=0; i<logic.height; i++) {
|
|
|
401 unsigned char* m = mem;
|
|
|
402 int j; for (j=0; j<cwidth; j++) {
|
|
|
403 *dest = colortable[((read_little_endian_int((char*)m))>>shift) & mask];
|
|
|
404 dest++;
|
|
|
405 m += bpp;
|
|
|
406 }
|
|
|
407 mem += bpl;
|
|
|
408 }
|
|
|
409 glyph->bitmap_left = logic.x;
|
|
|
410 glyph->bitmap_top = -logic.y;
|
|
|
411 glyph->bitmap.width = logic.width;
|
|
|
412 glyph->bitmap.rows = logic.height;
|
|
|
413 glyph->advance.x = logic.width + 1;
|
|
|
414 glyph->advance.y = logic.height+ 1;
|
|
|
415
|
|
|
416 return true;
|
|
|
417 }
|
|
|
418 };
|
|
|
419
|
|
|
420 #endif /* USE_X11 */
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