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1 | /*----------------------------------------------------------------------* |
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2 | * File: rxvtimg.C |
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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 | } |
6 | |
156 | |
7 | #if 0 |
157 | #if 0 |
8 | struct pict |
158 | struct pict |
9 | { |
159 | { |
10 | Display *dpy; |
160 | Display *dpy; |
… | |
… | |
166 | uint8_t r = *src++; |
316 | uint8_t r = *src++; |
167 | uint8_t g = *src++; |
317 | uint8_t g = *src++; |
168 | uint8_t b = *src++; |
318 | uint8_t b = *src++; |
169 | |
319 | |
170 | uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
320 | uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
171 | |
321 | |
172 | if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
322 | if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
173 | v = ecb_bswap32 (v); |
323 | v = ecb_bswap32 (v); |
174 | |
324 | |
175 | *dst++ = v; |
325 | *dst++ = v; |
176 | } |
326 | } |
… | |
… | |
299 | rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
449 | rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
300 | img->alloc (); |
450 | img->alloc (); |
301 | |
451 | |
302 | Picture src = picture (); |
452 | Picture src = picture (); |
303 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
453 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
304 | |
454 | |
305 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
455 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
306 | |
456 | |
307 | XRenderFreePicture (dpy, src); |
457 | XRenderFreePicture (dpy, src); |
308 | XRenderFreePicture (dpy, dst); |
458 | XRenderFreePicture (dpy, dst); |
309 | |
459 | |
… | |
… | |
312 | |
462 | |
313 | delete img; |
463 | delete img; |
314 | } |
464 | } |
315 | |
465 | |
316 | static void |
466 | static void |
317 | get_gaussian_kernel (int radius, int width, rxvt_img::nv *kernel, XFixed *params) |
467 | get_gaussian_kernel (int radius, int width, nv *kernel, XFixed *params) |
318 | { |
468 | { |
319 | rxvt_img::nv sigma = radius / 2.0; |
469 | nv sigma = radius / 2.0; |
320 | rxvt_img::nv scale = sqrt (2.0 * M_PI) * sigma; |
470 | nv scale = sqrt (2.0 * M_PI) * sigma; |
321 | rxvt_img::nv sum = 0.0; |
471 | nv sum = 0.0; |
322 | |
472 | |
323 | for (int i = 0; i < width; i++) |
473 | for (int i = 0; i < width; i++) |
324 | { |
474 | { |
325 | rxvt_img::nv x = i - width / 2; |
475 | nv x = i - width / 2; |
326 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
476 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
327 | sum += kernel[i]; |
477 | sum += kernel[i]; |
328 | } |
478 | } |
329 | |
479 | |
330 | params[0] = XDoubleToFixed (width); |
480 | params[0] = XDoubleToFixed (width); |
… | |
… | |
517 | |
667 | |
518 | Display *dpy = s->display->dpy; |
668 | Display *dpy = s->display->dpy; |
519 | Picture src = img->picture (); |
669 | Picture src = img->picture (); |
520 | Picture dst = picture (); |
670 | Picture dst = picture (); |
521 | Picture mask_p = 0; |
671 | Picture mask_p = 0; |
522 | |
672 | |
523 | if (mask != 1.) |
673 | if (mask != 1.) |
524 | { |
674 | { |
525 | mask_p = create_xrender_mask (dpy, img->pm, False, False); |
675 | mask_p = create_xrender_mask (dpy, img->pm, False, False); |
526 | XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
676 | XRenderColor mask_c = { 0, 0, 0, float_to_component (mask) }; |
527 | XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
677 | XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
… | |
… | |
558 | 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); |
559 | img->alloc (); |
709 | img->alloc (); |
560 | |
710 | |
561 | Picture src = picture (); |
711 | Picture src = picture (); |
562 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
712 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
563 | |
713 | |
564 | if (alpha) |
714 | if (alpha) |
565 | { |
715 | { |
566 | XRenderColor rc = { 0, 0, 0, 0 }; |
716 | XRenderColor rc = { 0, 0, 0, 0 }; |
567 | 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 |
568 | 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); |
… | |
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595 | } |
745 | } |
596 | |
746 | |
597 | return img; |
747 | return img; |
598 | } |
748 | } |
599 | |
749 | |
600 | static void |
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601 | mat_invert (rxvt_img::nv mat[3][3], rxvt_img::nv (&inv)[3][3]) |
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602 | { |
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603 | rxvt_img::nv s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; |
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604 | rxvt_img::nv s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; |
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605 | rxvt_img::nv s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; |
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606 | |
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607 | rxvt_img::nv invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); |
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608 | |
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609 | inv [0][0] = invdet * s0; |
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610 | inv [0][1] = invdet * s1; |
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611 | inv [0][2] = invdet * s2; |
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612 | |
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613 | inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); |
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614 | inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); |
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615 | inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); |
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616 | |
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617 | inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); |
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618 | inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); |
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619 | inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); |
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620 | } |
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621 | |
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622 | static rxvt_img::nv |
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623 | mat_apply (rxvt_img::nv mat[3][3], int i, rxvt_img::nv x, rxvt_img::nv y) |
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624 | { |
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625 | rxvt_img::nv v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; |
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626 | rxvt_img::nv w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; |
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627 | |
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628 | return v * (1. / w); |
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629 | } |
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630 | |
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631 | rxvt_img * |
750 | rxvt_img * |
632 | rxvt_img::transform (nv matrix[3][3]) |
751 | rxvt_img::transform (const nv matrix[3][3]) |
633 | { |
752 | { |
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753 | return transform (mat3x3 (&matrix[0][0])); |
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754 | } |
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755 | |
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756 | rxvt_img * |
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757 | rxvt_img::transform (const nv *matrix) |
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758 | { |
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759 | mat3x3 m (matrix); |
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760 | |
634 | // calculate new pixel bounding box coordinates |
761 | // calculate new pixel bounding box coordinates |
635 | nv rmin[2], rmax[2]; |
762 | nv r[2], rmin[2], rmax[2]; |
636 | |
763 | |
637 | for (int i = 0; i < 2; ++i) |
764 | for (int i = 0; i < 2; ++i) |
638 | { |
765 | { |
639 | nv v; |
766 | nv v; |
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767 | |
640 | v = mat_apply (matrix, i, 0+x, 0+y); rmin [i] = rmax [i] = v; |
768 | v = m.apply1 (i, 0+x, 0+y); rmin [i] = rmax [i] = v; r [i] = v; |
641 | v = mat_apply (matrix, i, w+x, 0+y); 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); |
642 | v = mat_apply (matrix, i, 0+x, h+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); |
643 | v = mat_apply (matrix, i, w+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); |
644 | } |
772 | } |
645 | |
773 | |
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774 | float sx = rmin [0] - x; |
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775 | float sy = rmin [1] - y; |
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776 | |
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777 | // TODO: adjust matrix for subpixel accuracy |
646 | int dx = floor (rmin [0]); |
778 | int nx = floor (rmin [0]); |
647 | int dy = floor (rmin [1]); |
779 | int ny = floor (rmin [1]); |
648 | |
780 | |
649 | int new_width = ceil (rmax [0] - dx); |
781 | int new_width = ceil (rmax [0] - rmin [0]); |
650 | int new_height = ceil (rmax [1] - dy); |
782 | int new_height = ceil (rmax [1] - rmin [1]); |
651 | |
783 | |
652 | nv inv[3][3]; |
784 | m = mat3x3::translate (-x, -y) * m * mat3x3::translate (x, y); |
653 | mat_invert (matrix, inv); |
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654 | |
785 | |
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786 | mat3x3 inv = m.invert (); |
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787 | |
655 | rxvt_img *img = new rxvt_img (s, format, dx, dy, new_width, new_height, repeat); |
788 | rxvt_img *img = new rxvt_img (s, format, nx, ny, new_width, new_height, repeat); |
656 | img->alloc (); |
789 | img->alloc (); |
657 | |
790 | |
658 | Display *dpy = s->display->dpy; |
791 | Display *dpy = s->display->dpy; |
659 | Picture src = picture (); |
792 | Picture src = picture (); |
660 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
793 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
… | |
… | |
665 | for (int j = 0; j < 3; ++j) |
798 | for (int j = 0; j < 3; ++j) |
666 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
799 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
667 | |
800 | |
668 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
801 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
669 | XRenderSetPictureTransform (dpy, src, &xfrm); |
802 | XRenderSetPictureTransform (dpy, src, &xfrm); |
670 | 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); |
671 | |
804 | |
672 | XRenderFreePicture (dpy, src); |
805 | XRenderFreePicture (dpy, src); |
673 | XRenderFreePicture (dpy, dst); |
806 | XRenderFreePicture (dpy, dst); |
674 | |
807 | |
675 | return img; |
808 | return img; |
… | |
… | |
679 | rxvt_img::scale (int new_width, int new_height) |
812 | rxvt_img::scale (int new_width, int new_height) |
680 | { |
813 | { |
681 | if (w == new_width && h == new_height) |
814 | if (w == new_width && h == new_height) |
682 | return clone (); |
815 | return clone (); |
683 | |
816 | |
684 | nv matrix[3][3] = { |
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685 | { new_width / (nv)w, 0, 0 }, |
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686 | { 0, new_height / (nv)h, 0 }, |
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687 | { 0, 0, 1 } |
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688 | }; |
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689 | |
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690 | int old_repeat_mode = repeat; |
817 | int old_repeat_mode = repeat; |
691 | 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 |
692 | |
819 | |
693 | rxvt_img *img = transform (matrix); |
820 | rxvt_img *img = transform (mat3x3::scale (new_width / (nv)w, new_height / (nv)h)); |
694 | |
821 | |
695 | repeat = old_repeat_mode; |
822 | repeat = old_repeat_mode; |
696 | img->repeat = repeat; |
823 | img->repeat = repeat; |
697 | |
824 | |
698 | return img; |
825 | return img; |
699 | } |
826 | } |
700 | |
827 | |
701 | rxvt_img * |
828 | rxvt_img * |
702 | rxvt_img::rotate (int cx, int cy, nv phi) |
829 | rxvt_img::rotate (int cx, int cy, nv phi) |
703 | { |
830 | { |
704 | nv s = sin (phi); |
831 | #if 0 |
705 | nv c = cos (phi); |
|
|
706 | |
|
|
707 | nv matrix[3][3] = { |
|
|
708 | { c, -s, cx - c * cx + s * cy + 200 }, |
832 | { c, -s, cx - c * cx + s * cy }, |
709 | { s, c, cy - s * cx - c * cy }, |
833 | { s, c, cy - s * cx - c * cy }, |
710 | { 0, 0, 1 } |
834 | { 0, 0, 1 } |
711 | //{ c, -s, 0 }, |
835 | #endif |
712 | //{ s, c, 0 }, |
|
|
713 | //{ 0, 0, 1 } |
|
|
714 | }; |
|
|
715 | |
836 | |
716 | //move (-cx, -cy); |
837 | move (-cx, -cy); |
717 | rxvt_img *img = transform (matrix); |
838 | rxvt_img *img = transform (mat3x3::rotate (phi)); |
718 | //move ( cx, cy); |
839 | move ( cx, cy); |
719 | //img->move (cx, cy); |
840 | img->move (cx, cy); |
720 | |
841 | |
721 | return img; |
842 | return img; |
722 | } |
843 | } |
723 | |
844 | |
724 | rxvt_img * |
845 | rxvt_img * |