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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 |
| 6 | |
30 | |
| 7 | #define float_to_component(d) ((d) * 65535.99) |
31 | typedef rxvt_img::nv nv; |
| 8 | |
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 | } |
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208 | |
| 9 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height) |
209 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
| 10 | : s(screen), w(width), h(height), format(format), shared(false) |
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| 11 | { |
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| 12 | pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
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| 13 | } |
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| 14 | |
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| 15 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap) |
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| 16 | : s(screen), pm(pixmap), w(width), h(height), format(format), shared(false) |
210 | : s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
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211 | pm(0), ref(0) |
| 17 | { |
212 | { |
| 18 | } |
213 | } |
| 19 | |
214 | |
| 20 | rxvt_img * |
215 | rxvt_img::rxvt_img (const rxvt_img &img) |
| 21 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
216 | : s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref) |
| 22 | { |
217 | { |
| 23 | GError *err; |
218 | ++ref->cnt; |
| 24 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
219 | } |
| 25 | |
220 | |
| 26 | if (!pb) |
221 | rxvt_img * |
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222 | rxvt_img::new_from_root (rxvt_screen *s) |
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223 | { |
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224 | Display *dpy = s->display->dpy; |
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225 | unsigned int root_pm_w, root_pm_h; |
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226 | Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
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227 | if (root_pixmap == None) |
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228 | root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
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229 | |
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230 | if (root_pixmap == None) |
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231 | return 0; |
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232 | |
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233 | Window wdummy; |
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234 | int idummy; |
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235 | unsigned int udummy; |
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236 | |
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237 | if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
| 27 | return 0; |
238 | return 0; |
| 28 | |
239 | |
| 29 | rxvt_img *img = new rxvt_img ( |
240 | rxvt_img *img = new rxvt_img ( |
| 30 | s, |
241 | s, |
| 31 | XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24), |
242 | XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
| 32 | gdk_pixbuf_get_width (pb), |
243 | 0, |
| 33 | gdk_pixbuf_get_height (pb) |
244 | 0, |
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245 | root_pm_w, |
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246 | root_pm_h |
| 34 | ); |
247 | ); |
| 35 | |
248 | |
| 36 | img->render (pb, 0, 0, img->w, img->h, 0, 0); |
249 | img->pm = root_pixmap; |
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250 | img->ref = new pixref (root_pm_w, root_pm_h); |
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251 | img->ref->ours = false; |
| 37 | |
252 | |
| 38 | return img; |
253 | return img; |
| 39 | } |
254 | } |
| 40 | |
255 | |
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256 | # if HAVE_PIXBUF |
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257 | |
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258 | rxvt_img * |
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259 | rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
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260 | { |
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261 | Display *dpy = s->display->dpy; |
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262 | |
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263 | int width = gdk_pixbuf_get_width (pb); |
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264 | int height = gdk_pixbuf_get_height (pb); |
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265 | |
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266 | if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
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267 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
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268 | |
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269 | // since we require rgb24/argb32 formats from xrender we assume |
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270 | // that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
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271 | |
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272 | int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
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273 | |
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274 | XImage xi; |
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275 | |
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276 | xi.width = width; |
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277 | xi.height = height; |
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278 | xi.xoffset = 0; |
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279 | xi.format = ZPixmap; |
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280 | xi.byte_order = ImageByteOrder (dpy); |
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281 | xi.bitmap_unit = 0; //XY only, unused |
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282 | xi.bitmap_bit_order = 0; //XY only, unused |
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283 | xi.bitmap_pad = BitmapPad (dpy); |
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284 | xi.depth = 32; |
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285 | xi.bytes_per_line = 0; |
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286 | xi.bits_per_pixel = 32; //Z only |
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287 | xi.red_mask = 0x00000000; //Z only, unused |
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288 | xi.green_mask = 0x00000000; //Z only, unused |
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289 | xi.blue_mask = 0x00000000; //Z only, unused |
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290 | xi.obdata = 0; // probably unused |
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291 | |
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292 | bool byte_order_mismatch = byte_order != xi.byte_order; |
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293 | |
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294 | if (!XInitImage (&xi)) |
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295 | rxvt_fatal ("unable to initialise ximage, please report.\n"); |
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296 | |
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297 | if (height > INT_MAX / xi.bytes_per_line) |
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298 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
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299 | |
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300 | xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
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301 | |
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302 | int rowstride = gdk_pixbuf_get_rowstride (pb); |
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303 | bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
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304 | unsigned char *row = gdk_pixbuf_get_pixels (pb); |
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305 | |
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306 | char *line = xi.data; |
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307 | |
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308 | for (int y = 0; y < height; y++) |
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309 | { |
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310 | unsigned char *src = row; |
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311 | uint32_t *dst = (uint32_t *)line; |
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312 | |
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313 | if (!pb_has_alpha) |
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314 | for (int x = 0; x < width; x++) |
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315 | { |
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316 | uint8_t r = *src++; |
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317 | uint8_t g = *src++; |
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318 | uint8_t b = *src++; |
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319 | |
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320 | uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
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321 | |
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322 | if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
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323 | v = ecb_bswap32 (v); |
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324 | |
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325 | *dst++ = v; |
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326 | } |
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327 | else |
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328 | for (int x = 0; x < width; x++) |
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329 | { |
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330 | uint32_t v = *(uint32_t *)src; src += 4; |
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331 | |
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332 | if (ecb_big_endian ()) |
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333 | v = ecb_bswap32 (v); |
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334 | |
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335 | v = ecb_rotl32 (v, 8); // abgr to bgra |
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336 | |
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337 | if (!byte_order_mismatch) |
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338 | v = ecb_bswap32 (v); |
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339 | |
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340 | *dst++ = v; |
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341 | } |
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342 | |
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343 | row += rowstride; |
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344 | line += xi.bytes_per_line; |
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345 | } |
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346 | |
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347 | rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); |
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348 | img->alloc (); |
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349 | |
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350 | GC gc = XCreateGC (dpy, img->pm, 0, 0); |
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351 | XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
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352 | XFreeGC (dpy, gc); |
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353 | |
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354 | free (xi.data); |
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355 | |
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356 | return img; |
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357 | } |
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358 | |
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359 | rxvt_img * |
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360 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
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361 | { |
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362 | GError *err = 0; |
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363 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
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364 | |
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365 | if (!pb) |
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366 | rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
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367 | |
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368 | rxvt_img *img = new_from_pixbuf (s, pb); |
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369 | |
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370 | g_object_unref (pb); |
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371 | |
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372 | return img; |
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373 | } |
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374 | |
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375 | # endif |
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376 | |
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377 | void |
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378 | rxvt_img::destroy () |
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379 | { |
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380 | if (--ref->cnt) |
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381 | return; |
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382 | |
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383 | if (pm && ref->ours) |
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384 | XFreePixmap (s->display->dpy, pm); |
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385 | |
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386 | delete ref; |
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387 | } |
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388 | |
| 41 | rxvt_img::~rxvt_img () |
389 | rxvt_img::~rxvt_img () |
| 42 | { |
390 | { |
| 43 | if (!shared) |
391 | destroy (); |
| 44 | XFreePixmap (s->display->dpy, pm); |
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| 45 | } |
392 | } |
| 46 | |
393 | |
| 47 | void |
394 | void |
| 48 | rxvt_img::fill (const rxvt_color &c) |
395 | rxvt_img::alloc () |
| 49 | { |
396 | { |
| 50 | XGCValues gcv; |
397 | pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
| 51 | gcv.foreground = c; |
398 | ref = new pixref (w, h); |
|
|
399 | } |
|
|
400 | |
|
|
401 | Picture |
|
|
402 | rxvt_img::picture () |
|
|
403 | { |
|
|
404 | Display *dpy = s->display->dpy; |
|
|
405 | |
|
|
406 | XRenderPictureAttributes pa; |
|
|
407 | pa.repeat = repeat; |
|
|
408 | Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
|
|
409 | |
|
|
410 | return pic; |
|
|
411 | } |
|
|
412 | |
|
|
413 | void |
|
|
414 | rxvt_img::unshare () |
|
|
415 | { |
|
|
416 | if (ref->cnt == 1 && ref->ours) |
|
|
417 | return; |
|
|
418 | |
|
|
419 | Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
| 52 | GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); |
420 | GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
| 53 | XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); |
421 | XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
| 54 | XFreeGC (s->display->dpy, gc); |
422 | XFreeGC (s->display->dpy, gc); |
|
|
423 | |
|
|
424 | destroy (); |
|
|
425 | |
|
|
426 | pm = pm2; |
|
|
427 | ref = new pixref (ref->w, ref->h); |
|
|
428 | } |
|
|
429 | |
|
|
430 | void |
|
|
431 | rxvt_img::fill (const rgba &c) |
|
|
432 | { |
|
|
433 | XRenderColor rc = { c.r, c.g, c.b, c.a }; |
|
|
434 | |
|
|
435 | Display *dpy = s->display->dpy; |
|
|
436 | Picture src = picture (); |
|
|
437 | XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
|
|
438 | XRenderFreePicture (dpy, src); |
|
|
439 | } |
|
|
440 | |
|
|
441 | void |
|
|
442 | rxvt_img::add_alpha () |
|
|
443 | { |
|
|
444 | if (format->direct.alphaMask) |
|
|
445 | return; |
|
|
446 | |
|
|
447 | Display *dpy = s->display->dpy; |
|
|
448 | |
|
|
449 | rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
|
|
450 | img->alloc (); |
|
|
451 | |
|
|
452 | Picture src = picture (); |
|
|
453 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
|
|
454 | |
|
|
455 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
|
|
456 | |
|
|
457 | XRenderFreePicture (dpy, src); |
|
|
458 | XRenderFreePicture (dpy, dst); |
|
|
459 | |
|
|
460 | ::swap (img->ref, ref); |
|
|
461 | ::swap (img->pm , pm ); |
|
|
462 | |
|
|
463 | delete img; |
| 55 | } |
464 | } |
| 56 | |
465 | |
| 57 | static void |
466 | static void |
| 58 | get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
467 | get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
| 59 | { |
468 | { |
| 60 | double sigma = radius / 2.0; |
469 | nv sigma = radius / 2.0; |
| 61 | double scale = sqrt (2.0 * M_PI) * sigma; |
470 | nv scale = sqrt (2.0 * M_PI) * sigma; |
| 62 | double sum = 0.0; |
471 | nv sum = 0.0; |
| 63 | |
472 | |
| 64 | for (int i = 0; i < width; i++) |
473 | for (int i = 0; i < width; i++) |
| 65 | { |
474 | { |
| 66 | double x = i - width / 2; |
475 | nv x = i - width / 2; |
| 67 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
476 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
| 68 | sum += kernel[i]; |
477 | sum += kernel[i]; |
| 69 | } |
478 | } |
| 70 | |
479 | |
| 71 | params[0] = XDoubleToFixed (width); |
480 | params[0] = XDoubleToFixed (width); |
| … | |
… | |
| 73 | |
482 | |
| 74 | for (int i = 0; i < width; i++) |
483 | for (int i = 0; i < width; i++) |
| 75 | params[i+2] = XDoubleToFixed (kernel[i] / sum); |
484 | params[i+2] = XDoubleToFixed (kernel[i] / sum); |
| 76 | } |
485 | } |
| 77 | |
486 | |
| 78 | void |
487 | rxvt_img * |
| 79 | rxvt_img::blur (int rh, int rv) |
488 | rxvt_img::blur (int rh, int rv) |
| 80 | { |
489 | { |
| 81 | if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
490 | if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
| 82 | return; |
491 | return clone (); |
| 83 | |
492 | |
| 84 | Display *dpy = s->display->dpy; |
493 | Display *dpy = s->display->dpy; |
| 85 | int size = max (rh, rv) * 2 + 1; |
494 | int size = max (rh, rv) * 2 + 1; |
| 86 | double *kernel = (double *)malloc (size * sizeof (double)); |
495 | nv *kernel = (nv *)malloc (size * sizeof (nv)); |
| 87 | XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
496 | XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
|
|
497 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
|
|
498 | img->alloc (); |
| 88 | |
499 | |
| 89 | XRenderPictureAttributes pa; |
500 | XRenderPictureAttributes pa; |
| 90 | |
|
|
| 91 | pa.repeat = RepeatPad; |
501 | pa.repeat = RepeatPad; |
| 92 | Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
502 | Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
|
|
503 | Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
|
|
504 | |
| 93 | Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth); |
505 | Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
| 94 | Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); |
506 | Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
| 95 | XFreePixmap (dpy, tmp); |
507 | XFreePixmap (dpy, tmp_pm); |
| 96 | |
508 | |
| 97 | if (kernel && params) |
509 | if (kernel && params) |
| 98 | { |
510 | { |
| 99 | size = rh * 2 + 1; |
511 | size = rh * 2 + 1; |
| 100 | get_gaussian_kernel (rh, size, kernel, params); |
512 | get_gaussian_kernel (rh, size, kernel, params); |
| 101 | |
513 | |
| 102 | XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
514 | XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
| 103 | XRenderComposite (dpy, |
515 | XRenderComposite (dpy, |
| 104 | PictOpSrc, |
516 | PictOpSrc, |
| 105 | src, |
517 | src, |
|
|
518 | None, |
|
|
519 | tmp, |
|
|
520 | 0, 0, |
|
|
521 | 0, 0, |
|
|
522 | 0, 0, |
|
|
523 | w, h); |
|
|
524 | |
|
|
525 | size = rv * 2 + 1; |
|
|
526 | get_gaussian_kernel (rv, size, kernel, params); |
|
|
527 | ::swap (params[0], params[1]); |
|
|
528 | |
|
|
529 | XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
|
|
530 | XRenderComposite (dpy, |
|
|
531 | PictOpSrc, |
|
|
532 | tmp, |
| 106 | None, |
533 | None, |
| 107 | dst, |
534 | dst, |
| 108 | 0, 0, |
535 | 0, 0, |
| 109 | 0, 0, |
536 | 0, 0, |
| 110 | 0, 0, |
537 | 0, 0, |
| 111 | w, h); |
538 | w, h); |
| 112 | |
|
|
| 113 | ::swap (src, dst); |
|
|
| 114 | |
|
|
| 115 | size = rv * 2 + 1; |
|
|
| 116 | get_gaussian_kernel (rv, size, kernel, params); |
|
|
| 117 | ::swap (params[0], params[1]); |
|
|
| 118 | |
|
|
| 119 | XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
|
|
| 120 | XRenderComposite (dpy, |
|
|
| 121 | PictOpSrc, |
|
|
| 122 | src, |
|
|
| 123 | None, |
|
|
| 124 | dst, |
|
|
| 125 | 0, 0, |
|
|
| 126 | 0, 0, |
|
|
| 127 | 0, 0, |
|
|
| 128 | w, h); |
|
|
| 129 | } |
539 | } |
| 130 | |
540 | |
| 131 | free (kernel); |
541 | free (kernel); |
| 132 | free (params); |
542 | free (params); |
|
|
543 | |
| 133 | XRenderFreePicture (dpy, src); |
544 | XRenderFreePicture (dpy, src); |
| 134 | XRenderFreePicture (dpy, dst); |
545 | XRenderFreePicture (dpy, dst); |
|
|
546 | XRenderFreePicture (dpy, tmp); |
|
|
547 | |
|
|
548 | return img; |
| 135 | } |
549 | } |
| 136 | |
550 | |
| 137 | static Picture |
551 | static Picture |
| 138 | create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) |
552 | create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
| 139 | { |
553 | { |
| 140 | Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
554 | Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
| 141 | |
555 | |
| 142 | XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
556 | XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
| 143 | XRenderPictureAttributes pa; |
557 | XRenderPictureAttributes pa; |
| 144 | pa.repeat = True; |
558 | pa.repeat = RepeatNormal; |
|
|
559 | pa.component_alpha = component_alpha; |
| 145 | Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat, &pa); |
560 | Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
| 146 | |
561 | |
| 147 | XFreePixmap (dpy, pixmap); |
562 | XFreePixmap (dpy, pixmap); |
| 148 | |
563 | |
| 149 | return mask; |
564 | return mask; |
| 150 | } |
565 | } |
| 151 | |
566 | |
|
|
567 | static void |
|
|
568 | extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
|
|
569 | { |
|
|
570 | int32_t x = clamp (c, cl0, cl1); |
|
|
571 | c -= x; |
|
|
572 | xc = x; |
|
|
573 | } |
|
|
574 | |
|
|
575 | static bool |
|
|
576 | extract (int32_t cl0, int32_t cl1, int32_t &r, int32_t &g, int32_t &b, int32_t &a, unsigned short &xr, unsigned short &xg, unsigned short &xb, unsigned short &xa) |
|
|
577 | { |
|
|
578 | extract (cl0, cl1, r, xr); |
|
|
579 | extract (cl0, cl1, g, xg); |
|
|
580 | extract (cl0, cl1, b, xb); |
|
|
581 | extract (cl0, cl1, a, xa); |
|
|
582 | |
|
|
583 | return xr | xg | xb | xa; |
|
|
584 | } |
|
|
585 | |
| 152 | void |
586 | void |
| 153 | rxvt_img::brightness (double r, double g, double b, double a) |
587 | rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
| 154 | { |
588 | { |
|
|
589 | unshare (); |
|
|
590 | |
| 155 | Display *dpy = s->display->dpy; |
591 | Display *dpy = s->display->dpy; |
| 156 | Picture src = create_xrender_mask (dpy, pm, True); |
|
|
| 157 | Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
592 | Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
| 158 | |
593 | |
|
|
594 | // loop should not be needed for brightness, as only -1..1 makes sense |
|
|
595 | //while (r | g | b | a) |
|
|
596 | { |
|
|
597 | unsigned short xr, xg, xb, xa; |
| 159 | XRenderColor mask_c; |
598 | XRenderColor mask_c; |
| 160 | mask_c.red = float_to_component (r); |
599 | |
| 161 | mask_c.green = float_to_component (g); |
600 | if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
| 162 | mask_c.blue = float_to_component (b); |
|
|
| 163 | mask_c.alpha = float_to_component (a); |
|
|
| 164 | XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
601 | XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
| 165 | |
602 | |
| 166 | XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
603 | if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
|
|
604 | { |
|
|
605 | XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
|
|
606 | XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
|
|
607 | mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
|
|
608 | mask_c.green = -mask_c.green; |
|
|
609 | mask_c.blue = -mask_c.blue; |
|
|
610 | mask_c.alpha = -mask_c.alpha; |
|
|
611 | XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
|
|
612 | XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
|
|
613 | } |
|
|
614 | } |
|
|
615 | |
|
|
616 | XRenderFreePicture (dpy, dst); |
| 167 | } |
617 | } |
| 168 | |
618 | |
| 169 | void |
619 | void |
| 170 | rxvt_img::contrast (double r, double g, double b, double a) |
620 | rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
| 171 | { |
621 | { |
| 172 | if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) |
622 | if (r < 0 || g < 0 || b < 0 || a < 0) |
| 173 | return; |
623 | rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
| 174 | |
624 | |
|
|
625 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
|
|
626 | img->alloc (); |
|
|
627 | img->fill (rgba (0, 0, 0, 0)); |
|
|
628 | |
|
|
629 | // premultiply (yeah, these are not exact, sue me or fix it) |
|
|
630 | r = (r * (a >> 8)) >> 8; |
|
|
631 | g = (g * (a >> 8)) >> 8; |
|
|
632 | b = (b * (a >> 8)) >> 8; |
|
|
633 | |
| 175 | Display *dpy = s->display->dpy; |
634 | Display *dpy = s->display->dpy; |
| 176 | Picture src = create_xrender_mask (dpy, pm, True); |
635 | |
|
|
636 | Picture src = picture (); |
| 177 | Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
637 | Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
|
|
638 | Picture mul = create_xrender_mask (dpy, pm, True, True); |
| 178 | |
639 | |
|
|
640 | //TODO: this operator does not yet implement some useful contrast |
|
|
641 | while (r | g | b | a) |
|
|
642 | { |
|
|
643 | unsigned short xr, xg, xb, xa; |
| 179 | XRenderColor mask_c; |
644 | XRenderColor mask_c; |
| 180 | mask_c.red = float_to_component (r); |
645 | |
| 181 | mask_c.green = float_to_component (g); |
646 | if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
| 182 | mask_c.blue = float_to_component (b); |
647 | { |
| 183 | mask_c.alpha = float_to_component (a); |
|
|
| 184 | XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); |
648 | XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
| 185 | |
|
|
| 186 | XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
649 | XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
|
|
650 | } |
|
|
651 | } |
|
|
652 | |
|
|
653 | XRenderFreePicture (dpy, mul); |
|
|
654 | XRenderFreePicture (dpy, dst); |
|
|
655 | XRenderFreePicture (dpy, src); |
|
|
656 | |
|
|
657 | ::swap (img->ref, ref); |
|
|
658 | ::swap (img->pm , pm ); |
|
|
659 | |
|
|
660 | delete img; |
| 187 | } |
661 | } |
| 188 | |
662 | |
| 189 | void |
663 | void |
| 190 | rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) |
664 | rxvt_img::draw (rxvt_img *img, int op, nv mask) |
| 191 | { |
665 | { |
| 192 | //TODO |
666 | unshare (); |
| 193 | } |
|
|
| 194 | |
667 | |
| 195 | rxvt_img * |
|
|
| 196 | rxvt_img::copy () |
|
|
| 197 | { |
|
|
| 198 | GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
|
|
| 199 | Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth); |
|
|
| 200 | XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0); |
|
|
| 201 | XFreeGC (s->display->dpy, gc); |
|
|
| 202 | return new rxvt_img (s, format, w, h, pm2); |
|
|
| 203 | } |
|
|
| 204 | |
|
|
| 205 | rxvt_img * |
|
|
| 206 | rxvt_img::transform (int new_width, int new_height, double matrix[16]) |
|
|
| 207 | { |
|
|
| 208 | //TODO |
|
|
| 209 | } |
|
|
| 210 | |
|
|
| 211 | rxvt_img * |
|
|
| 212 | rxvt_img::scale (int new_width, int new_height) |
|
|
| 213 | { |
|
|
| 214 | // use transform |
|
|
| 215 | //TODO |
|
|
| 216 | } |
|
|
| 217 | |
|
|
| 218 | rxvt_img * |
|
|
| 219 | rxvt_img::convert_to (XRenderPictFormat *new_format) |
|
|
| 220 | { |
|
|
| 221 | Display *dpy = s->display->dpy; |
668 | Display *dpy = s->display->dpy; |
| 222 | rxvt_img *img = new rxvt_img (s,new_format,w, h); |
669 | Picture src = img->picture (); |
| 223 | Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0); |
670 | Picture dst = picture (); |
| 224 | Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
671 | Picture mask_p = 0; |
|
|
672 | |
|
|
673 | if (mask != 1.) |
|
|
674 | { |
|
|
675 | mask_p = create_xrender_mask (dpy, img->pm, False, False); |
|
|
676 | XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
|
|
677 | XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
|
|
678 | } |
| 225 | |
679 | |
| 226 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
680 | XRenderComposite (dpy, op, src, mask_p, dst, x - img->x, y - img->y, 0, 0, 0, 0, w, h); |
| 227 | |
681 | |
| 228 | XRenderFreePicture (dpy, src); |
682 | XRenderFreePicture (dpy, src); |
| 229 | XRenderFreePicture (dpy, dst); |
683 | XRenderFreePicture (dpy, dst); |
| 230 | |
684 | |
|
|
685 | if (mask_p) |
|
|
686 | XRenderFreePicture (dpy, mask_p); |
|
|
687 | } |
|
|
688 | |
|
|
689 | rxvt_img * |
|
|
690 | rxvt_img::clone () |
|
|
691 | { |
|
|
692 | return new rxvt_img (*this); |
|
|
693 | } |
|
|
694 | |
|
|
695 | rxvt_img * |
|
|
696 | rxvt_img::reify () |
|
|
697 | { |
|
|
698 | if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
|
|
699 | return clone (); |
|
|
700 | |
|
|
701 | Display *dpy = s->display->dpy; |
|
|
702 | |
|
|
703 | // add an alpha channel if... |
|
|
704 | bool alpha = !format->direct.alphaMask // pixmap has none yet |
|
|
705 | && (x || y) // we need one because of non-zero offset |
|
|
706 | && repeat == RepeatNone; // and we have no good pixels to fill with |
|
|
707 | |
|
|
708 | rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
|
|
709 | img->alloc (); |
|
|
710 | |
|
|
711 | Picture src = picture (); |
|
|
712 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
|
|
713 | |
|
|
714 | if (alpha) |
|
|
715 | { |
|
|
716 | XRenderColor rc = { 0, 0, 0, 0 }; |
|
|
717 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
|
|
718 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, x, y, ref->w, ref->h); |
|
|
719 | } |
|
|
720 | else |
|
|
721 | XRenderComposite (dpy, PictOpSrc, src, None, dst, -x, -y, 0, 0, 0, 0, w, h); |
|
|
722 | |
|
|
723 | XRenderFreePicture (dpy, src); |
|
|
724 | XRenderFreePicture (dpy, dst); |
|
|
725 | |
| 231 | return img; |
726 | return img; |
| 232 | } |
727 | } |
| 233 | |
728 | |
|
|
729 | rxvt_img * |
|
|
730 | rxvt_img::sub_rect (int x, int y, int width, int height) |
|
|
731 | { |
|
|
732 | rxvt_img *img = clone (); |
|
|
733 | |
|
|
734 | img->x -= x; |
|
|
735 | img->y -= y; |
|
|
736 | |
|
|
737 | if (w != width || h != height) |
|
|
738 | { |
|
|
739 | img->w = width; |
|
|
740 | img->h = height; |
|
|
741 | |
|
|
742 | rxvt_img *img2 = img->reify (); |
|
|
743 | delete img; |
|
|
744 | img = img2; |
|
|
745 | } |
|
|
746 | |
|
|
747 | return img; |
|
|
748 | } |
|
|
749 | |
|
|
750 | rxvt_img * |
|
|
751 | rxvt_img::transform (const nv matrix[3][3]) |
|
|
752 | { |
|
|
753 | return transform (mat3x3 (&matrix[0][0])); |
|
|
754 | } |
|
|
755 | |
|
|
756 | rxvt_img * |
|
|
757 | rxvt_img::transform (const nv *matrix) |
|
|
758 | { |
|
|
759 | mat3x3 m (matrix); |
|
|
760 | |
|
|
761 | // calculate new pixel bounding box coordinates |
|
|
762 | nv r[2], rmin[2], rmax[2]; |
|
|
763 | |
|
|
764 | for (int i = 0; i < 2; ++i) |
|
|
765 | { |
|
|
766 | nv v; |
|
|
767 | |
|
|
768 | v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
|
|
769 | v = m.apply1 (i, w+x, 0+y); 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); |
|
|
771 | v = m.apply1 (i, w+x, h+y); min_it (rmin [i], v); max_it (rmax [i], v); |
|
|
772 | } |
|
|
773 | |
|
|
774 | float sx = rmin [0] - x; |
|
|
775 | float sy = rmin [1] - y; |
|
|
776 | |
|
|
777 | // TODO: adjust matrix for subpixel accuracy |
|
|
778 | int nx = floor (rmin [0]); |
|
|
779 | int ny = floor (rmin [1]); |
|
|
780 | |
|
|
781 | int new_width = ceil (rmax [0] - rmin [0]); |
|
|
782 | int new_height = ceil (rmax [1] - rmin [1]); |
|
|
783 | |
|
|
784 | m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
|
|
785 | |
|
|
786 | mat3x3 inv = m.invert (); |
|
|
787 | |
|
|
788 | rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
|
|
789 | img->alloc (); |
|
|
790 | |
|
|
791 | Display *dpy = s->display->dpy; |
|
|
792 | Picture src = picture (); |
|
|
793 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
|
|
794 | |
|
|
795 | XTransform xfrm; |
|
|
796 | |
|
|
797 | for (int i = 0; i < 3; ++i) |
|
|
798 | for (int j = 0; j < 3; ++j) |
|
|
799 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
|
|
800 | |
|
|
801 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
|
|
802 | XRenderSetPictureTransform (dpy, src, &xfrm); |
|
|
803 | XRenderComposite (dpy, PictOpSrc, src, None, dst, sx, sy, 0, 0, 0, 0, new_width, new_height); |
|
|
804 | |
|
|
805 | XRenderFreePicture (dpy, src); |
|
|
806 | XRenderFreePicture (dpy, dst); |
|
|
807 | |
|
|
808 | return img; |
|
|
809 | } |
|
|
810 | |
|
|
811 | rxvt_img * |
|
|
812 | rxvt_img::scale (int new_width, int new_height) |
|
|
813 | { |
|
|
814 | if (w == new_width && h == new_height) |
|
|
815 | return clone (); |
|
|
816 | |
|
|
817 | int old_repeat_mode = repeat; |
|
|
818 | repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
|
|
819 | |
|
|
820 | rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h)); |
|
|
821 | |
|
|
822 | repeat = old_repeat_mode; |
|
|
823 | img->repeat = repeat; |
|
|
824 | |
|
|
825 | return img; |
|
|
826 | } |
|
|
827 | |
|
|
828 | rxvt_img * |
|
|
829 | rxvt_img::rotate (int cx, int cy, nv phi) |
|
|
830 | { |
|
|
831 | #if 0 |
|
|
832 | { c, -s, cx - c * cx + s * cy }, |
|
|
833 | { s, c, cy - s * cx - c * cy }, |
|
|
834 | { 0, 0, 1 } |
| 234 | #endif |
835 | #endif |
| 235 | |
836 | |
|
|
837 | move (-cx, -cy); |
|
|
838 | rxvt_img *img = transform (mat3x3::rotate (phi)); |
|
|
839 | move ( cx, cy); |
|
|
840 | img->move (cx, cy); |
|
|
841 | |
|
|
842 | return img; |
|
|
843 | } |
|
|
844 | |
|
|
845 | rxvt_img * |
|
|
846 | rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
|
|
847 | { |
|
|
848 | if (new_format == format) |
|
|
849 | return clone (); |
|
|
850 | |
|
|
851 | rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
|
|
852 | img->alloc (); |
|
|
853 | |
|
|
854 | Display *dpy = s->display->dpy; |
|
|
855 | Picture src = picture (); |
|
|
856 | Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
|
|
857 | int op = PictOpSrc; |
|
|
858 | |
|
|
859 | if (format->direct.alphaMask && !new_format->direct.alphaMask) |
|
|
860 | { |
|
|
861 | // does it have to be that complicated |
|
|
862 | XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
|
|
863 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
|
|
864 | |
|
|
865 | op = PictOpOver; |
|
|
866 | } |
|
|
867 | |
|
|
868 | XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
|
|
869 | |
|
|
870 | XRenderFreePicture (dpy, src); |
|
|
871 | XRenderFreePicture (dpy, dst); |
|
|
872 | |
|
|
873 | return img; |
|
|
874 | } |
|
|
875 | |
|
|
876 | rxvt_img * |
|
|
877 | rxvt_img::blend (rxvt_img *img, nv factor) |
|
|
878 | { |
|
|
879 | rxvt_img *img2 = clone (); |
|
|
880 | Display *dpy = s->display->dpy; |
|
|
881 | Picture src = img->picture (); |
|
|
882 | Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
|
|
883 | Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
|
|
884 | |
|
|
885 | XRenderColor mask_c; |
|
|
886 | |
|
|
887 | mask_c.alpha = float_to_component (factor); |
|
|
888 | mask_c.red = |
|
|
889 | mask_c.green = |
|
|
890 | mask_c.blue = 0; |
|
|
891 | XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
|
|
892 | |
|
|
893 | XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
|
|
894 | |
|
|
895 | XRenderFreePicture (dpy, src); |
|
|
896 | XRenderFreePicture (dpy, dst); |
|
|
897 | XRenderFreePicture (dpy, mask); |
|
|
898 | |
|
|
899 | return img2; |
|
|
900 | } |
|
|
901 | |
|
|
902 | #endif |
|
|
903 | |
