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1 | /*----------------------------------------------------------------------* |
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2 | * File: rxvtimg.h |
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3 | *----------------------------------------------------------------------* |
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4 | * |
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5 | * All portions of code are copyright by their respective author/s. |
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6 | * Copyright (c) 2012 Marc Lehmann <schmorp@schmorp.de> |
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7 | * Copyright (c) 2012 Emanuele Giaquinta <e.giaquinta@glauco.it> |
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8 | * |
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9 | * This program is free software; you can redistribute it and/or modify |
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10 | * it under the terms of the GNU General Public License as published by |
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11 | * the Free Software Foundation; either version 2 of the License, or |
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12 | * (at your option) any later version. |
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13 | * |
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14 | * This program is distributed in the hope that it will be useful, |
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 | * GNU General Public License for more details. |
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18 | * |
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19 | * You should have received a copy of the GNU General Public License |
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20 | * along with this program; if not, write to the Free Software |
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21 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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22 | *---------------------------------------------------------------------*/ |
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23 | |
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24 | #include <string.h> |
1 | #include <math.h> |
25 | #include <math.h> |
2 | #include "../config.h" |
26 | #include "../config.h" |
3 | #include "rxvt.h" |
27 | #include "rxvt.h" |
4 | |
28 | |
5 | #if HAVE_IMG |
29 | #if HAVE_IMG |
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30 | |
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31 | typedef rxvt_img::nv nv; |
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32 | |
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33 | namespace |
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34 | { |
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35 | |
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36 | struct mat3x3 |
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37 | { |
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38 | nv v[3][3]; |
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39 | |
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40 | mat3x3 () |
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41 | { |
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42 | } |
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43 | |
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44 | mat3x3 (const nv *matrix) |
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45 | { |
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46 | memcpy (v, matrix, sizeof (v)); |
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47 | } |
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48 | |
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49 | mat3x3 (nv v11, nv v12, nv v13, nv v21, nv v22, nv v23, nv v31, nv v32, nv v33) |
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50 | { |
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51 | v[0][0] = v11; v[0][1] = v12; v[0][2] = v13; |
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52 | v[1][0] = v21; v[1][1] = v22; v[1][2] = v23; |
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53 | v[2][0] = v31; v[2][1] = v32; v[2][2] = v33; |
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54 | } |
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55 | |
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56 | mat3x3 invert (); |
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57 | |
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58 | nv *operator [](int i) { return &v[i][0]; } |
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59 | const nv *operator [](int i) const { return &v[i][0]; } |
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60 | |
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61 | operator const nv * () const { return &v[0][0]; } |
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62 | operator nv * () { return &v[0][0]; } |
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63 | |
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64 | // quite inefficient, hopefully gcc pulls the w calc out of any loops |
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65 | nv apply1 (int i, nv x, nv y) |
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66 | { |
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67 | mat3x3 &m = *this; |
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68 | |
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69 | nv v = m[i][0] * x + m[i][1] * y + m[i][2]; |
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70 | nv w = m[2][0] * x + m[2][1] * y + m[2][2]; |
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71 | |
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72 | return v * (1. / w); |
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73 | } |
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74 | |
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75 | static mat3x3 translate (nv x, nv y); |
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76 | static mat3x3 scale (nv s, nv t); |
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77 | static mat3x3 rotate (nv phi); |
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78 | }; |
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79 | |
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80 | mat3x3 |
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81 | mat3x3::invert () |
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82 | { |
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83 | mat3x3 &m = *this; |
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84 | mat3x3 inv; |
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85 | |
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86 | nv s0 = m[2][2] * m[1][1] - m[2][1] * m[1][2]; |
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87 | nv s1 = m[2][1] * m[0][2] - m[2][2] * m[0][1]; |
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88 | nv s2 = m[1][2] * m[0][1] - m[1][1] * m[0][2]; |
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89 | |
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90 | nv invdet = 1. / (m[0][0] * s0 + m[1][0] * s1 + m[2][0] * s2); |
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91 | |
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92 | inv[0][0] = invdet * s0; |
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93 | inv[0][1] = invdet * s1; |
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94 | inv[0][2] = invdet * s2; |
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95 | |
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96 | inv[1][0] = invdet * (m[2][0] * m[1][2] - m[2][2] * m[1][0]); |
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97 | inv[1][1] = invdet * (m[2][2] * m[0][0] - m[2][0] * m[0][2]); |
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98 | inv[1][2] = invdet * (m[1][0] * m[0][2] - m[1][2] * m[0][0]); |
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99 | |
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100 | inv[2][0] = invdet * (m[2][1] * m[1][0] - m[2][0] * m[1][1]); |
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101 | inv[2][1] = invdet * (m[2][0] * m[0][1] - m[2][1] * m[0][0]); |
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102 | inv[2][2] = invdet * (m[1][1] * m[0][0] - m[1][0] * m[0][1]); |
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103 | |
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104 | return inv; |
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105 | } |
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106 | |
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107 | static mat3x3 |
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108 | operator *(const mat3x3 &a, const mat3x3 &b) |
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109 | { |
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110 | mat3x3 r; |
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111 | |
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112 | for (int i = 0; i < 3; ++i) |
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113 | for (int j = 0; j < 3; ++j) |
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114 | r[i][j] = a[i][0] * b[0][j] |
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115 | + a[i][1] * b[1][j] |
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116 | + a[i][2] * b[2][j]; |
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117 | |
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118 | return r; |
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119 | } |
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120 | |
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121 | mat3x3 |
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122 | mat3x3::translate (nv x, nv y) |
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123 | { |
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124 | return mat3x3 ( |
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125 | 1, 0, x, |
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126 | 0, 1, y, |
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127 | 0, 0, 1 |
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128 | ); |
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129 | } |
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130 | |
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131 | mat3x3 |
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132 | mat3x3::scale (nv s, nv t) |
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133 | { |
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134 | return mat3x3 ( |
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135 | s, 0, 0, |
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136 | 0, t, 0, |
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137 | 0, 0, 1 |
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138 | ); |
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139 | } |
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140 | |
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141 | // clockwise |
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142 | mat3x3 |
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143 | mat3x3::rotate (nv phi) |
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144 | { |
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145 | nv s = sin (phi); |
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146 | nv c = cos (phi); |
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147 | |
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148 | return mat3x3 ( |
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149 | c, -s, 0, |
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150 | s, c, 0, |
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151 | 0, 0, 1 |
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152 | ); |
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153 | } |
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154 | |
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155 | } |
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156 | |
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157 | #if 0 |
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158 | struct pict |
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159 | { |
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160 | Display *dpy; |
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161 | Picture pic; |
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162 | |
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163 | operator Picture () const |
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164 | { |
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165 | return pic; |
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166 | } |
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167 | |
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168 | pict () |
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169 | : pic (0) |
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170 | { |
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171 | } |
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172 | |
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173 | pict (rxvt_img *img, XRenderPictFormat *format = 0) |
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174 | : dpy (img->s->display->dpy) |
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175 | { |
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176 | XRenderPictureAttributes pa; |
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177 | pa.repeat = img->repeat; |
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178 | pic = XRenderCreatePicture (dpy, img->pm, format ? format : img->format, CPRepeat, &pa); |
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179 | } |
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180 | |
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181 | ~pict () |
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182 | { |
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183 | if (pic) |
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184 | XRenderFreePicture (dpy, pic); |
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185 | } |
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186 | }; |
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187 | #endif |
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188 | |
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189 | static XRenderPictFormat * |
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190 | find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
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191 | { |
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192 | if (format->direct.alphaMask) |
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193 | return format; // already has alpha |
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194 | |
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195 | // try to find a suitable alpha format, one bit alpha is enough for our purposes |
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196 | if (format->type == PictTypeDirect) |
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197 | for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
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198 | if (f->direct.alphaMask |
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199 | && f->type == PictTypeDirect |
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200 | && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
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201 | && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
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202 | && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
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203 | return f; |
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204 | |
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205 | // should be a very good fallback |
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206 | return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
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207 | } |
6 | |
208 | |
7 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
209 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
8 | : s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
210 | : s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
9 | pm(0), ref(0) |
211 | pm(0), ref(0) |
10 | { |
212 | { |
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195 | pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
397 | pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
196 | ref = new pixref (w, h); |
398 | ref = new pixref (w, h); |
197 | } |
399 | } |
198 | |
400 | |
199 | Picture |
401 | Picture |
200 | rxvt_img::src_picture () |
402 | rxvt_img::picture () |
201 | { |
403 | { |
202 | Display *dpy = s->display->dpy; |
404 | Display *dpy = s->display->dpy; |
203 | |
405 | |
204 | XRenderPictureAttributes pa; |
406 | XRenderPictureAttributes pa; |
205 | pa.repeat = repeat; |
407 | pa.repeat = repeat; |
… | |
… | |
224 | pm = pm2; |
426 | pm = pm2; |
225 | ref = new pixref (ref->w, ref->h); |
427 | ref = new pixref (ref->w, ref->h); |
226 | } |
428 | } |
227 | |
429 | |
228 | void |
430 | void |
229 | rxvt_img::fill (const rxvt_color &c) |
431 | rxvt_img::fill (const rgba &c) |
230 | { |
432 | { |
231 | rgba cc; |
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232 | c.get (cc); |
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233 | XRenderColor rc = { cc.r, cc.g, cc.b, cc.a }; |
433 | XRenderColor rc = { c.r, c.g, c.b, c.a }; |
234 | |
434 | |
235 | Display *dpy = s->display->dpy; |
435 | Display *dpy = s->display->dpy; |
236 | Picture src = src_picture (); |
436 | Picture src = picture (); |
237 | XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
437 | XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
238 | XRenderFreePicture (dpy, src); |
438 | XRenderFreePicture (dpy, src); |
239 | } |
439 | } |
240 | |
440 | |
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441 | void |
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442 | rxvt_img::add_alpha () |
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443 | { |
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444 | if (format->direct.alphaMask) |
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445 | return; |
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446 | |
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447 | Display *dpy = s->display->dpy; |
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448 | |
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449 | rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
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450 | img->alloc (); |
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451 | |
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452 | Picture src = picture (); |
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453 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
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454 | |
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455 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
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456 | |
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457 | XRenderFreePicture (dpy, src); |
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458 | XRenderFreePicture (dpy, dst); |
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459 | |
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460 | ::swap (img->ref, ref); |
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461 | ::swap (img->pm , pm ); |
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462 | |
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463 | delete img; |
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464 | } |
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465 | |
241 | static void |
466 | static void |
242 | get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
467 | get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
243 | { |
468 | { |
244 | double sigma = radius / 2.0; |
469 | nv sigma = radius / 2.0; |
245 | double scale = sqrt (2.0 * M_PI) * sigma; |
470 | nv scale = sqrt (2.0 * M_PI) * sigma; |
246 | double sum = 0.0; |
471 | nv sum = 0.0; |
247 | |
472 | |
248 | for (int i = 0; i < width; i++) |
473 | for (int i = 0; i < width; i++) |
249 | { |
474 | { |
250 | double x = i - width / 2; |
475 | nv x = i - width / 2; |
251 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
476 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
252 | sum += kernel[i]; |
477 | sum += kernel[i]; |
253 | } |
478 | } |
254 | |
479 | |
255 | params[0] = XDoubleToFixed (width); |
480 | params[0] = XDoubleToFixed (width); |
… | |
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265 | if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
490 | if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
266 | return clone (); |
491 | return clone (); |
267 | |
492 | |
268 | Display *dpy = s->display->dpy; |
493 | Display *dpy = s->display->dpy; |
269 | int size = max (rh, rv) * 2 + 1; |
494 | int size = max (rh, rv) * 2 + 1; |
270 | double *kernel = (double *)malloc (size * sizeof (double)); |
495 | nv *kernel = (nv *)malloc (size * sizeof (nv)); |
271 | XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
496 | XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
272 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
497 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
273 | img->alloc (); |
498 | img->alloc (); |
274 | |
499 | |
275 | XRenderPictureAttributes pa; |
500 | XRenderPictureAttributes pa; |
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397 | if (r < 0 || g < 0 || b < 0 || a < 0) |
622 | if (r < 0 || g < 0 || b < 0 || a < 0) |
398 | rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
623 | rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
399 | |
624 | |
400 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
625 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
401 | img->alloc (); |
626 | img->alloc (); |
402 | |
627 | img->fill (rgba (0, 0, 0, 0)); |
403 | { |
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404 | rxvt_color empty; |
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405 | empty.set (s, rgba (0, 0, 0, 0)); |
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406 | img->fill (empty); |
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407 | } |
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408 | |
628 | |
409 | // premultiply (yeah, these are not exact, sue me or fix it) |
629 | // premultiply (yeah, these are not exact, sue me or fix it) |
410 | r = (r * (a >> 8)) >> 8; |
630 | r = (r * (a >> 8)) >> 8; |
411 | g = (g * (a >> 8)) >> 8; |
631 | g = (g * (a >> 8)) >> 8; |
412 | b = (b * (a >> 8)) >> 8; |
632 | b = (b * (a >> 8)) >> 8; |
413 | |
633 | |
414 | Display *dpy = s->display->dpy; |
634 | Display *dpy = s->display->dpy; |
415 | |
635 | |
416 | Picture src = src_picture (); |
636 | Picture src = picture (); |
417 | Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
637 | Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
418 | Picture mul = create_xrender_mask (dpy, pm, True, True); |
638 | Picture mul = create_xrender_mask (dpy, pm, True, True); |
419 | |
639 | |
420 | //TODO: this operator does not yet implement some useful contrast |
640 | //TODO: this operator does not yet implement some useful contrast |
421 | while (r | g | b | a) |
641 | while (r | g | b | a) |
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438 | ::swap (img->pm , pm ); |
658 | ::swap (img->pm , pm ); |
439 | |
659 | |
440 | delete img; |
660 | delete img; |
441 | } |
661 | } |
442 | |
662 | |
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663 | void |
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664 | rxvt_img::draw (rxvt_img *img, int op, nv mask) |
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665 | { |
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666 | unshare (); |
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667 | |
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668 | Display *dpy = s->display->dpy; |
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669 | Picture src = img->picture (); |
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670 | Picture dst = picture (); |
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671 | Picture mask_p = 0; |
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672 | |
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673 | if (mask != 1.) |
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674 | { |
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675 | mask_p = create_xrender_mask (dpy, img->pm, False, False); |
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676 | XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
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677 | XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
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678 | } |
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679 | |
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680 | XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); |
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681 | |
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682 | XRenderFreePicture (dpy, src); |
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683 | XRenderFreePicture (dpy, dst); |
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684 | |
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685 | if (mask_p) |
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686 | XRenderFreePicture (dpy, mask_p); |
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687 | } |
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688 | |
443 | rxvt_img * |
689 | rxvt_img * |
444 | rxvt_img::clone () |
690 | rxvt_img::clone () |
445 | { |
691 | { |
446 | return new rxvt_img (*this); |
692 | return new rxvt_img (*this); |
447 | } |
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448 | |
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449 | static XRenderPictFormat * |
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450 | find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
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451 | { |
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452 | if (format->direct.alphaMask) |
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453 | return format; // already has alpha |
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454 | |
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455 | // try to find a suitable alpha format, one bit alpha is enough for our purposes |
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456 | if (format->type == PictTypeDirect) |
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457 | for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
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458 | if (f->direct.alphaMask |
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459 | && f->type == PictTypeDirect |
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460 | && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
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461 | && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
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462 | && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
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463 | return f; |
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464 | |
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465 | // should be a very good fallback |
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466 | return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
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467 | } |
693 | } |
468 | |
694 | |
469 | rxvt_img * |
695 | rxvt_img * |
470 | rxvt_img::reify () |
696 | rxvt_img::reify () |
471 | { |
697 | { |
… | |
… | |
480 | && repeat == RepeatNone; // and we have no good pixels to fill with |
706 | && repeat == RepeatNone; // and we have no good pixels to fill with |
481 | |
707 | |
482 | rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
708 | rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
483 | img->alloc (); |
709 | img->alloc (); |
484 | |
710 | |
485 | Picture src = src_picture (); |
711 | Picture src = picture (); |
486 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
712 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
487 | |
713 | |
488 | if (alpha) |
714 | if (alpha) |
489 | { |
715 | { |
490 | XRenderColor rc = { 0, 0, 0, 0 }; |
716 | XRenderColor rc = { 0, 0, 0, 0 }; |
491 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
717 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
492 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
718 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h); |
493 | } |
719 | } |
494 | else |
720 | else |
495 | XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
721 | XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h); |
496 | |
722 | |
497 | XRenderFreePicture (dpy, src); |
723 | XRenderFreePicture (dpy, src); |
498 | XRenderFreePicture (dpy, dst); |
724 | XRenderFreePicture (dpy, dst); |
499 | |
725 | |
500 | return img; |
726 | return img; |
… | |
… | |
503 | rxvt_img * |
729 | rxvt_img * |
504 | rxvt_img::sub_rect (int x, int y, int width, int height) |
730 | rxvt_img::sub_rect (int x, int y, int width, int height) |
505 | { |
731 | { |
506 | rxvt_img *img = clone (); |
732 | rxvt_img *img = clone (); |
507 | |
733 | |
508 | img->x += x; |
734 | img->x -= x; |
509 | img->y += y; |
735 | img->y -= y; |
510 | |
736 | |
511 | if (w != width || h != height) |
737 | if (w != width || h != height) |
512 | { |
738 | { |
513 | img->w = width; |
739 | img->w = width; |
514 | img->h = height; |
740 | img->h = height; |
… | |
… | |
519 | } |
745 | } |
520 | |
746 | |
521 | return img; |
747 | return img; |
522 | } |
748 | } |
523 | |
749 | |
524 | static void |
|
|
525 | mat_invert (double mat[3][3], double (&inv)[3][3]) |
|
|
526 | { |
|
|
527 | double s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; |
|
|
528 | double s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; |
|
|
529 | double s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; |
|
|
530 | |
|
|
531 | double invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); |
|
|
532 | |
|
|
533 | inv [0][0] = invdet * s0; |
|
|
534 | inv [0][1] = invdet * s1; |
|
|
535 | inv [0][2] = invdet * s2; |
|
|
536 | |
|
|
537 | inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); |
|
|
538 | inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); |
|
|
539 | inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); |
|
|
540 | |
|
|
541 | inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); |
|
|
542 | inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); |
|
|
543 | inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); |
|
|
544 | } |
|
|
545 | |
|
|
546 | static double |
|
|
547 | mat_apply (double mat[3][3], int i, double x, double y) |
|
|
548 | { |
|
|
549 | double v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; |
|
|
550 | double w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; |
|
|
551 | |
|
|
552 | return v * (1. / w); |
|
|
553 | } |
|
|
554 | |
|
|
555 | rxvt_img * |
750 | rxvt_img * |
556 | rxvt_img::transform (double matrix[3][3]) |
751 | rxvt_img::transform (const nv matrix[3][3]) |
557 | { |
752 | { |
558 | // find new offset |
753 | return transform (mat3x3 (&matrix[0][0])); |
559 | int ox = mat_apply (matrix, 0, x, y); |
754 | } |
560 | int oy = mat_apply (matrix, 1, x, y); |
755 | |
|
|
756 | rxvt_img * |
|
|
757 | rxvt_img::transform (const nv *matrix) |
|
|
758 | { |
|
|
759 | mat3x3 m (matrix); |
561 | |
760 | |
562 | // calculate new pixel bounding box coordinates |
761 | // calculate new pixel bounding box coordinates |
563 | double rmin[2], rmax[2]; |
762 | nv r[2], rmin[2], rmax[2]; |
564 | |
763 | |
565 | for (int i = 0; i < 2; ++i) |
764 | for (int i = 0; i < 2; ++i) |
566 | { |
765 | { |
567 | double v; |
766 | nv v; |
|
|
767 | |
568 | v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; |
768 | v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
569 | v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v); |
769 | v = m.apply1 (i, w+x, 0+y); min_it (rmin [i], v); max_it (rmax [i], v); |
570 | v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v); |
770 | v = m.apply1 (i, 0+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
571 | v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v); |
771 | v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
572 | } |
772 | } |
573 | |
773 | |
|
|
774 | float sx = rmin [0] - x; |
|
|
775 | float sy = rmin [1] - y; |
|
|
776 | |
|
|
777 | // TODO: adjust matrix for subpixel accuracy |
574 | int dx = floor (rmin [0]); |
778 | int nx = floor (rmin [0]); |
575 | int dy = floor (rmin [1]); |
779 | int ny = floor (rmin [1]); |
576 | |
780 | |
577 | int new_width = ceil (rmax [0] - dx); |
781 | int new_width = ceil (rmax [0] - rmin [0]); |
578 | int new_height = ceil (rmax [1] - dy); |
782 | int new_height = ceil (rmax [1] - rmin [1]); |
579 | |
783 | |
580 | double inv[3][3]; |
784 | m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
581 | mat_invert (matrix, inv); |
|
|
582 | |
785 | |
|
|
786 | mat3x3 inv = m.invert (); |
|
|
787 | |
583 | rxvt_img *img = new rxvt_img (s, format, ox - dx, oy - dy, new_width, new_height, repeat); |
788 | rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
584 | img->alloc (); |
789 | img->alloc (); |
585 | |
790 | |
586 | Display *dpy = s->display->dpy; |
791 | Display *dpy = s->display->dpy; |
587 | Picture src = src_picture (); |
792 | Picture src = picture (); |
588 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
793 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
589 | |
794 | |
590 | XTransform xfrm; |
795 | XTransform xfrm; |
591 | |
796 | |
592 | for (int i = 0; i < 3; ++i) |
797 | for (int i = 0; i < 3; ++i) |
593 | for (int j = 0; j < 3; ++j) |
798 | for (int j = 0; j < 3; ++j) |
594 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
799 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
595 | |
800 | |
596 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
801 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
597 | XRenderSetPictureTransform (dpy, src, &xfrm); |
802 | XRenderSetPictureTransform (dpy, src, &xfrm); |
598 | XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height); |
803 | XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
599 | |
804 | |
600 | XRenderFreePicture (dpy, src); |
805 | XRenderFreePicture (dpy, src); |
601 | XRenderFreePicture (dpy, dst); |
806 | XRenderFreePicture (dpy, dst); |
602 | |
807 | |
603 | return img; |
808 | return img; |
… | |
… | |
607 | rxvt_img::scale (int new_width, int new_height) |
812 | rxvt_img::scale (int new_width, int new_height) |
608 | { |
813 | { |
609 | if (w == new_width && h == new_height) |
814 | if (w == new_width && h == new_height) |
610 | return clone (); |
815 | return clone (); |
611 | |
816 | |
612 | double matrix[3][3] = { |
|
|
613 | { new_width / (double)w, 0, 0 }, |
|
|
614 | { 0, new_height / (double)h, 0 }, |
|
|
615 | { 0, 0, 1 } |
|
|
616 | }; |
|
|
617 | |
|
|
618 | int old_repeat_mode = repeat; |
817 | int old_repeat_mode = repeat; |
619 | repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
818 | repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
620 | |
819 | |
621 | rxvt_img *img = transform (matrix); |
820 | rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h)); |
622 | |
821 | |
623 | repeat = old_repeat_mode; |
822 | repeat = old_repeat_mode; |
624 | img->repeat = repeat; |
823 | img->repeat = repeat; |
625 | |
824 | |
626 | return img; |
825 | return img; |
627 | } |
826 | } |
628 | |
827 | |
629 | rxvt_img * |
828 | rxvt_img * |
630 | rxvt_img::rotate (int cx, int cy, double phi) |
829 | rxvt_img::rotate (int cx, int cy, nv phi) |
631 | { |
830 | { |
632 | double s = sin (phi); |
831 | #if 0 |
633 | double c = cos (phi); |
|
|
634 | |
|
|
635 | double matrix[3][3] = { |
|
|
636 | //{ c, -s, cx - c * cx + s * cy }, |
832 | { c, -s, cx - c * cx + s * cy }, |
637 | //{ s, c, cy - s * cx - c * cy }, |
833 | { s, c, cy - s * cx - c * cy }, |
638 | //{ 0, 0, 1 } |
834 | { 0, 0, 1 } |
639 | { c, -s, 0 }, |
835 | #endif |
640 | { s, c, 0 }, |
|
|
641 | { 0, 0, 1 } |
|
|
642 | }; |
|
|
643 | |
836 | |
644 | move (-cx, -cy); |
837 | move (-cx, -cy); |
645 | rxvt_img *img = transform (matrix); |
838 | rxvt_img *img = transform (mat3x3::rotate (phi)); |
646 | move ( cx, cy); |
839 | move ( cx, cy); |
647 | img->move (cx, cy); |
840 | img->move (cx, cy); |
648 | |
841 | |
649 | return img; |
842 | return img; |
650 | } |
843 | } |
651 | |
844 | |
652 | rxvt_img * |
845 | rxvt_img * |
653 | rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg) |
846 | rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
654 | { |
847 | { |
655 | if (new_format == format) |
848 | if (new_format == format) |
656 | return clone (); |
849 | return clone (); |
657 | |
850 | |
658 | rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
851 | rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
659 | img->alloc (); |
852 | img->alloc (); |
660 | |
853 | |
661 | Display *dpy = s->display->dpy; |
854 | Display *dpy = s->display->dpy; |
662 | Picture src = src_picture (); |
855 | Picture src = picture (); |
663 | Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
856 | Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
664 | int op = PictOpSrc; |
857 | int op = PictOpSrc; |
665 | |
858 | |
666 | if (format->direct.alphaMask && !new_format->direct.alphaMask) |
859 | if (format->direct.alphaMask && !new_format->direct.alphaMask) |
667 | { |
860 | { |
668 | // does it have to be that complicated |
861 | // does it have to be that complicated |
669 | rgba c; |
|
|
670 | bg.get (c); |
|
|
671 | |
|
|
672 | XRenderColor rc = { c.r, c.g, c.b, 0xffff }; |
862 | XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
673 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
863 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
674 | |
864 | |
675 | op = PictOpOver; |
865 | op = PictOpOver; |
676 | } |
866 | } |
677 | |
867 | |
… | |
… | |
682 | |
872 | |
683 | return img; |
873 | return img; |
684 | } |
874 | } |
685 | |
875 | |
686 | rxvt_img * |
876 | rxvt_img * |
687 | rxvt_img::blend (rxvt_img *img, double factor) |
877 | rxvt_img::blend (rxvt_img *img, nv factor) |
688 | { |
878 | { |
689 | rxvt_img *img2 = clone (); |
879 | rxvt_img *img2 = clone (); |
690 | Display *dpy = s->display->dpy; |
880 | Display *dpy = s->display->dpy; |
691 | Picture src = img->src_picture (); |
881 | Picture src = img->picture (); |
692 | Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
882 | Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
693 | Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
883 | Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
694 | |
884 | |
695 | XRenderColor mask_c; |
885 | XRenderColor mask_c; |
696 | |
886 | |