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1 | #include <math.h> |
1 | #include "../config.h" |
2 | #include "../config.h" |
2 | #include "rxvt.h" |
3 | #include "rxvt.h" |
3 | |
4 | |
4 | #if HAVE_IMG |
5 | #if HAVE_IMG |
5 | |
6 | |
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7 | static XRenderPictFormat * |
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8 | find_alpha_format_for (Display *dpy, XRenderPictFormat *format) |
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9 | { |
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10 | if (format->direct.alphaMask) |
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11 | return format; // already has alpha |
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12 | |
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13 | // try to find a suitable alpha format, one bit alpha is enough for our purposes |
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14 | if (format->type == PictTypeDirect) |
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15 | for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n) |
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16 | if (f->direct.alphaMask |
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17 | && f->type == PictTypeDirect |
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18 | && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask ) |
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19 | && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask) |
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20 | && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask )) |
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21 | return f; |
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22 | |
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23 | // should be a very good fallback |
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24 | return XRenderFindStandardFormat (dpy, PictStandardARGB32); |
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25 | } |
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26 | |
6 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height) |
27 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat) |
7 | : s(screen), w(width), h(height), format(format), shared(false) |
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8 | { |
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9 | pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
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10 | } |
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11 | |
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12 | rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap) |
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13 | : s(screen), pm(pixmap), w(width), h(height), format(format), shared(false) |
28 | : s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat), |
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29 | pm(0), ref(0) |
14 | { |
30 | { |
15 | } |
31 | } |
16 | |
32 | |
17 | rxvt_img * |
33 | rxvt_img::rxvt_img (const rxvt_img &img) |
18 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
34 | : 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) |
19 | { |
35 | { |
20 | GError *err; |
36 | ++ref->cnt; |
21 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
37 | } |
22 | |
38 | |
23 | if (!pb) |
39 | rxvt_img * |
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40 | rxvt_img::new_from_root (rxvt_screen *s) |
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41 | { |
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42 | Display *dpy = s->display->dpy; |
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43 | unsigned int root_pm_w, root_pm_h; |
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44 | Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]); |
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45 | if (root_pixmap == None) |
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46 | root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]); |
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47 | |
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48 | if (root_pixmap == None) |
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49 | return 0; |
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50 | |
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51 | Window wdummy; |
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52 | int idummy; |
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53 | unsigned int udummy; |
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54 | |
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55 | if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy)) |
24 | return 0; |
56 | return 0; |
25 | |
57 | |
26 | rxvt_img *img = new rxvt_img ( |
58 | rxvt_img *img = new rxvt_img ( |
27 | s, |
59 | s, |
28 | XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24), |
60 | XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)), |
29 | gdk_pixbuf_get_width (pb), |
61 | 0, |
30 | gdk_pixbuf_get_height (pb) |
62 | 0, |
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63 | root_pm_w, |
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64 | root_pm_h |
31 | ); |
65 | ); |
32 | |
66 | |
33 | img->render (pb, 0, 0, img->w, img->h, 0, 0); |
67 | img->pm = root_pixmap; |
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68 | img->ref = new pixref (root_pm_w, root_pm_h); |
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69 | img->ref->ours = false; |
34 | |
70 | |
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71 | return img; |
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72 | } |
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73 | |
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74 | # if HAVE_PIXBUF |
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75 | |
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76 | rxvt_img * |
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77 | rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
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78 | { |
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79 | Display *dpy = s->display->dpy; |
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80 | |
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81 | int width = gdk_pixbuf_get_width (pb); |
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82 | int height = gdk_pixbuf_get_height (pb); |
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83 | |
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84 | if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
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85 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
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86 | |
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87 | // since we require rgb24/argb32 formats from xrender we assume |
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88 | // that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
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89 | |
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90 | int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
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91 | |
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92 | XImage xi; |
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93 | |
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94 | xi.width = width; |
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95 | xi.height = height; |
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96 | xi.xoffset = 0; |
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97 | xi.format = ZPixmap; |
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98 | xi.byte_order = ImageByteOrder (dpy); |
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99 | xi.bitmap_unit = 0; //XY only, unused |
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100 | xi.bitmap_bit_order = 0; //XY only, unused |
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101 | xi.bitmap_pad = BitmapPad (dpy); |
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102 | xi.depth = 32; |
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103 | xi.bytes_per_line = 0; |
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104 | xi.bits_per_pixel = 32; //Z only |
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105 | xi.red_mask = 0x00000000; //Z only, unused |
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106 | xi.green_mask = 0x00000000; //Z only, unused |
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107 | xi.blue_mask = 0x00000000; //Z only, unused |
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108 | xi.obdata = 0; // probably unused |
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109 | |
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110 | bool byte_order_mismatch = byte_order != xi.byte_order; |
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111 | |
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112 | if (!XInitImage (&xi)) |
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113 | rxvt_fatal ("unable to initialise ximage, please report.\n"); |
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114 | |
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115 | if (height > INT_MAX / xi.bytes_per_line) |
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116 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n"); |
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117 | |
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118 | xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line); |
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119 | |
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120 | int rowstride = gdk_pixbuf_get_rowstride (pb); |
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121 | bool pb_has_alpha = gdk_pixbuf_get_has_alpha (pb); |
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122 | unsigned char *row = gdk_pixbuf_get_pixels (pb); |
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123 | |
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124 | char *line = xi.data; |
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125 | |
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126 | for (int y = 0; y < height; y++) |
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127 | { |
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128 | unsigned char *src = row; |
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129 | uint32_t *dst = (uint32_t *)line; |
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130 | |
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131 | if (!pb_has_alpha) |
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132 | for (int x = 0; x < width; x++) |
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133 | { |
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134 | uint8_t r = *src++; |
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135 | uint8_t g = *src++; |
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136 | uint8_t b = *src++; |
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137 | |
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138 | uint32_t v = (255 << 24) | (r << 16) | (g << 8) | b; |
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139 | |
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140 | if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
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141 | v = ecb_bswap32 (v); |
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142 | |
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143 | *dst++ = v; |
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144 | } |
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145 | else |
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146 | for (int x = 0; x < width; x++) |
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147 | { |
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148 | uint32_t v = *(uint32_t *)src; src += 4; |
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149 | |
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150 | if (ecb_big_endian ()) |
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151 | v = ecb_bswap32 (v); |
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152 | |
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153 | v = ecb_rotl32 (v, 8); // abgr to bgra |
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154 | |
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155 | if (!byte_order_mismatch) |
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156 | v = ecb_bswap32 (v); |
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157 | |
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158 | *dst++ = v; |
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159 | } |
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160 | |
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161 | row += rowstride; |
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162 | line += xi.bytes_per_line; |
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163 | } |
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164 | |
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165 | rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, PictStandardARGB32), 0, 0, width, height); |
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166 | img->alloc (); |
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167 | |
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168 | GC gc = XCreateGC (dpy, img->pm, 0, 0); |
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169 | XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height); |
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170 | XFreeGC (dpy, gc); |
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171 | |
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172 | free (xi.data); |
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173 | |
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174 | return img; |
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175 | } |
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176 | |
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177 | rxvt_img * |
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178 | rxvt_img::new_from_file (rxvt_screen *s, const char *filename) |
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179 | { |
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180 | GError *err = 0; |
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181 | GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); |
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182 | |
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183 | if (!pb) |
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184 | rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message); |
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185 | |
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186 | rxvt_img *img = new_from_pixbuf (s, pb); |
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187 | |
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188 | g_object_unref (pb); |
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189 | |
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190 | return img; |
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191 | } |
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192 | |
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193 | # endif |
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194 | |
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195 | void |
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196 | rxvt_img::destroy () |
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197 | { |
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198 | if (--ref->cnt) |
35 | return img; |
199 | return; |
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200 | |
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201 | if (pm && ref->ours) |
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202 | XFreePixmap (s->display->dpy, pm); |
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203 | |
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204 | delete ref; |
36 | } |
205 | } |
37 | |
206 | |
38 | rxvt_img::~rxvt_img () |
207 | rxvt_img::~rxvt_img () |
39 | { |
208 | { |
40 | if (!shared) |
209 | destroy (); |
41 | XFreePixmap (s->display->dpy, pm); |
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42 | } |
210 | } |
43 | |
211 | |
44 | void |
212 | void |
45 | rxvt_img::fill (const rxvt_color &c) |
213 | rxvt_img::alloc () |
46 | { |
214 | { |
47 | XGCValues gcv; |
215 | pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth); |
48 | gcv.foreground = c; |
216 | ref = new pixref (w, h); |
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217 | } |
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218 | |
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219 | Picture |
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220 | rxvt_img::src_picture () |
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221 | { |
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222 | Display *dpy = s->display->dpy; |
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223 | |
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224 | XRenderPictureAttributes pa; |
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225 | pa.repeat = repeat; |
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226 | Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
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227 | |
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228 | return pic; |
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229 | } |
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230 | |
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231 | void |
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232 | rxvt_img::unshare () |
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233 | { |
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234 | if (ref->cnt == 1 && ref->ours) |
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235 | return; |
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236 | |
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237 | Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth); |
49 | GC gc = XCreateGC (s->display->dpy, pm, GCForeground, &gcv); |
238 | GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
50 | XFillRectangle (s->display->dpy, pm, gc, 0, 0, w, h); |
239 | XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0); |
51 | XFreeGC (s->display->dpy, gc); |
240 | XFreeGC (s->display->dpy, gc); |
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241 | |
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242 | destroy (); |
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243 | |
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244 | pm = pm2; |
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245 | ref = new pixref (ref->w, ref->h); |
52 | } |
246 | } |
53 | |
247 | |
54 | void |
248 | void |
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249 | rxvt_img::fill (const rgba &c) |
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250 | { |
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251 | XRenderColor rc = { c.r, c.g, c.b, c.a }; |
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252 | |
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253 | Display *dpy = s->display->dpy; |
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254 | Picture src = src_picture (); |
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255 | XRenderFillRectangle (dpy, PictOpSrc, src, &rc, 0, 0, w, h); |
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256 | XRenderFreePicture (dpy, src); |
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257 | } |
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258 | |
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259 | void |
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260 | rxvt_img::add_alpha () |
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261 | { |
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262 | if (format->direct.alphaMask) |
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263 | return; |
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264 | |
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265 | Display *dpy = s->display->dpy; |
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266 | |
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267 | rxvt_img *img = new rxvt_img (s, find_alpha_format_for (dpy, format), x, y, w, h, repeat); |
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268 | img->alloc (); |
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269 | |
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270 | Picture src = src_picture (); |
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271 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
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272 | |
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273 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
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274 | |
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275 | XRenderFreePicture (dpy, src); |
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276 | XRenderFreePicture (dpy, dst); |
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277 | |
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278 | ::swap (img->ref, ref); |
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279 | ::swap (img->pm , pm ); |
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280 | |
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281 | delete img; |
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282 | } |
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283 | |
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284 | static void |
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285 | get_gaussian_kernel (int radius, int width, double *kernel, XFixed *params) |
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286 | { |
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287 | double sigma = radius / 2.0; |
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288 | double scale = sqrt (2.0 * M_PI) * sigma; |
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289 | double sum = 0.0; |
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290 | |
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291 | for (int i = 0; i < width; i++) |
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292 | { |
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293 | double x = i - width / 2; |
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294 | kernel[i] = exp (-(x * x) / (2.0 * sigma * sigma)) / scale; |
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295 | sum += kernel[i]; |
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296 | } |
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297 | |
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298 | params[0] = XDoubleToFixed (width); |
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299 | params[1] = XDoubleToFixed (1); |
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300 | |
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301 | for (int i = 0; i < width; i++) |
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302 | params[i+2] = XDoubleToFixed (kernel[i] / sum); |
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303 | } |
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304 | |
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305 | rxvt_img * |
55 | rxvt_img::blur (int rh, int rv) |
306 | rxvt_img::blur (int rh, int rv) |
56 | { |
307 | { |
57 | //TODO |
308 | if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) |
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309 | return clone (); |
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310 | |
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311 | Display *dpy = s->display->dpy; |
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312 | int size = max (rh, rv) * 2 + 1; |
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313 | double *kernel = (double *)malloc (size * sizeof (double)); |
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314 | XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); |
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315 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
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316 | img->alloc (); |
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317 | |
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318 | XRenderPictureAttributes pa; |
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319 | pa.repeat = RepeatPad; |
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320 | Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); |
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321 | Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
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322 | |
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323 | Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth); |
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324 | Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa); |
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325 | XFreePixmap (dpy, tmp_pm); |
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326 | |
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327 | if (kernel && params) |
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328 | { |
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329 | size = rh * 2 + 1; |
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330 | get_gaussian_kernel (rh, size, kernel, params); |
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331 | |
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332 | XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); |
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333 | XRenderComposite (dpy, |
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334 | PictOpSrc, |
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335 | src, |
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336 | None, |
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337 | tmp, |
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338 | 0, 0, |
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339 | 0, 0, |
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340 | 0, 0, |
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341 | w, h); |
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342 | |
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343 | size = rv * 2 + 1; |
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344 | get_gaussian_kernel (rv, size, kernel, params); |
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345 | ::swap (params[0], params[1]); |
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346 | |
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347 | XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2); |
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348 | XRenderComposite (dpy, |
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349 | PictOpSrc, |
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350 | tmp, |
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351 | None, |
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352 | dst, |
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353 | 0, 0, |
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354 | 0, 0, |
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355 | 0, 0, |
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356 | w, h); |
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357 | } |
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358 | |
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359 | free (kernel); |
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360 | free (params); |
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361 | |
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362 | XRenderFreePicture (dpy, src); |
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363 | XRenderFreePicture (dpy, dst); |
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364 | XRenderFreePicture (dpy, tmp); |
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365 | |
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366 | return img; |
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367 | } |
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368 | |
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369 | static Picture |
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370 | create_xrender_mask (Display *dpy, Drawable drawable, Bool argb, Bool component_alpha) |
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371 | { |
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372 | Pixmap pixmap = XCreatePixmap (dpy, drawable, 1, 1, argb ? 32 : 8); |
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373 | |
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374 | XRenderPictFormat *format = XRenderFindStandardFormat (dpy, argb ? PictStandardARGB32 : PictStandardA8); |
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375 | XRenderPictureAttributes pa; |
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376 | pa.repeat = RepeatNormal; |
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377 | pa.component_alpha = component_alpha; |
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378 | Picture mask = XRenderCreatePicture (dpy, pixmap, format, CPRepeat | CPComponentAlpha, &pa); |
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379 | |
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380 | XFreePixmap (dpy, pixmap); |
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381 | |
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382 | return mask; |
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383 | } |
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384 | |
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385 | static void |
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386 | extract (int32_t cl0, int32_t cl1, int32_t &c, unsigned short &xc) |
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387 | { |
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388 | int32_t x = clamp (c, cl0, cl1); |
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389 | c -= x; |
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390 | xc = x; |
|
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391 | } |
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392 | |
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393 | static bool |
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394 | 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) |
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395 | { |
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396 | extract (cl0, cl1, r, xr); |
|
|
397 | extract (cl0, cl1, g, xg); |
|
|
398 | extract (cl0, cl1, b, xb); |
|
|
399 | extract (cl0, cl1, a, xa); |
|
|
400 | |
|
|
401 | return xr | xg | xb | xa; |
58 | } |
402 | } |
59 | |
403 | |
60 | void |
404 | void |
61 | rxvt_img::brightness (double r, double g, double b, double a) |
405 | rxvt_img::brightness (int32_t r, int32_t g, int32_t b, int32_t a) |
62 | { |
406 | { |
63 | //TODO |
407 | unshare (); |
|
|
408 | |
|
|
409 | Display *dpy = s->display->dpy; |
|
|
410 | Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); |
|
|
411 | |
|
|
412 | // loop should not be needed for brightness, as only -1..1 makes sense |
|
|
413 | //while (r | g | b | a) |
|
|
414 | { |
|
|
415 | unsigned short xr, xg, xb, xa; |
|
|
416 | XRenderColor mask_c; |
|
|
417 | |
|
|
418 | if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
|
|
419 | XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
|
|
420 | |
|
|
421 | if (extract (-65535, 0, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
|
|
422 | { |
|
|
423 | XRenderColor mask_w = { 65535, 65535, 65535, 65535 }; |
|
|
424 | XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
|
|
425 | mask_c.red = -mask_c.red; //TODO: verify that doing clamp, assign, and negation does the right thing |
|
|
426 | mask_c.green = -mask_c.green; |
|
|
427 | mask_c.blue = -mask_c.blue; |
|
|
428 | mask_c.alpha = -mask_c.alpha; |
|
|
429 | XRenderFillRectangle (dpy, PictOpAdd, dst, &mask_c, 0, 0, w, h); |
|
|
430 | XRenderFillRectangle (dpy, PictOpDifference, dst, &mask_w, 0, 0, w, h); |
|
|
431 | } |
|
|
432 | } |
|
|
433 | |
|
|
434 | XRenderFreePicture (dpy, dst); |
64 | } |
435 | } |
65 | |
436 | |
66 | void |
437 | void |
67 | rxvt_img::contrast (double r, double g, double b, double a) |
438 | rxvt_img::contrast (int32_t r, int32_t g, int32_t b, int32_t a) |
68 | { |
439 | { |
69 | //TODO |
440 | if (r < 0 || g < 0 || b < 0 || a < 0) |
70 | } |
441 | rxvt_fatal ("rxvt_img::contrast does not support negative values.\n"); |
71 | |
442 | |
72 | void |
443 | rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat); |
73 | rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) |
444 | img->alloc (); |
74 | { |
445 | img->fill (rgba (0, 0, 0, 0)); |
75 | //TODO |
|
|
76 | } |
|
|
77 | |
446 | |
|
|
447 | // premultiply (yeah, these are not exact, sue me or fix it) |
|
|
448 | r = (r * (a >> 8)) >> 8; |
|
|
449 | g = (g * (a >> 8)) >> 8; |
|
|
450 | b = (b * (a >> 8)) >> 8; |
|
|
451 | |
|
|
452 | Display *dpy = s->display->dpy; |
|
|
453 | |
|
|
454 | Picture src = src_picture (); |
|
|
455 | Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0); |
|
|
456 | Picture mul = create_xrender_mask (dpy, pm, True, True); |
|
|
457 | |
|
|
458 | //TODO: this operator does not yet implement some useful contrast |
|
|
459 | while (r | g | b | a) |
|
|
460 | { |
|
|
461 | unsigned short xr, xg, xb, xa; |
|
|
462 | XRenderColor mask_c; |
|
|
463 | |
|
|
464 | if (extract (0, 65535, r, g, b, a, mask_c.red, mask_c.green, mask_c.blue, mask_c.alpha)) |
|
|
465 | { |
|
|
466 | XRenderFillRectangle (dpy, PictOpSrc, mul, &mask_c, 0, 0, 1, 1); |
|
|
467 | XRenderComposite (dpy, PictOpAdd, src, mul, dst, 0, 0, 0, 0, 0, 0, w, h); |
|
|
468 | } |
|
|
469 | } |
|
|
470 | |
|
|
471 | XRenderFreePicture (dpy, mul); |
|
|
472 | XRenderFreePicture (dpy, dst); |
|
|
473 | XRenderFreePicture (dpy, src); |
|
|
474 | |
|
|
475 | ::swap (img->ref, ref); |
|
|
476 | ::swap (img->pm , pm ); |
|
|
477 | |
|
|
478 | delete img; |
|
|
479 | } |
|
|
480 | |
78 | rxvt_img * |
481 | rxvt_img * |
79 | rxvt_img::copy () |
482 | rxvt_img::clone () |
80 | { |
483 | { |
81 | GC gc = XCreateGC (s->display->dpy, pm, 0, 0); |
484 | return new rxvt_img (*this); |
82 | Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth); |
|
|
83 | XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0); |
|
|
84 | XFreeGC (s->display->dpy, gc); |
|
|
85 | return new rxvt_img (s, format, w, h, pm2); |
|
|
86 | } |
485 | } |
87 | |
486 | |
88 | rxvt_img * |
487 | rxvt_img * |
89 | rxvt_img::transform (int new_width, int new_height, double matrix[16]) |
488 | rxvt_img::reify () |
90 | { |
489 | { |
91 | //TODO |
490 | if (x == 0 && y == 0 && w == ref->w && h == ref->h) |
|
|
491 | return clone (); |
|
|
492 | |
|
|
493 | Display *dpy = s->display->dpy; |
|
|
494 | |
|
|
495 | // add an alpha channel if... |
|
|
496 | bool alpha = !format->direct.alphaMask // pixmap has none yet |
|
|
497 | && (x || y) // we need one because of non-zero offset |
|
|
498 | && repeat == RepeatNone; // and we have no good pixels to fill with |
|
|
499 | |
|
|
500 | rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat); |
|
|
501 | img->alloc (); |
|
|
502 | |
|
|
503 | Picture src = src_picture (); |
|
|
504 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
|
|
505 | |
|
|
506 | if (alpha) |
|
|
507 | { |
|
|
508 | XRenderColor rc = { 0, 0, 0, 0 }; |
|
|
509 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles |
|
|
510 | XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h); |
|
|
511 | } |
|
|
512 | else |
|
|
513 | XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h); |
|
|
514 | |
|
|
515 | XRenderFreePicture (dpy, src); |
|
|
516 | XRenderFreePicture (dpy, dst); |
|
|
517 | |
|
|
518 | return img; |
|
|
519 | } |
|
|
520 | |
|
|
521 | rxvt_img * |
|
|
522 | rxvt_img::sub_rect (int x, int y, int width, int height) |
|
|
523 | { |
|
|
524 | rxvt_img *img = clone (); |
|
|
525 | |
|
|
526 | img->x += x; |
|
|
527 | img->y += y; |
|
|
528 | |
|
|
529 | if (w != width || h != height) |
|
|
530 | { |
|
|
531 | img->w = width; |
|
|
532 | img->h = height; |
|
|
533 | |
|
|
534 | rxvt_img *img2 = img->reify (); |
|
|
535 | delete img; |
|
|
536 | img = img2; |
|
|
537 | } |
|
|
538 | |
|
|
539 | return img; |
|
|
540 | } |
|
|
541 | |
|
|
542 | static void |
|
|
543 | mat_invert (double mat[3][3], double (&inv)[3][3]) |
|
|
544 | { |
|
|
545 | double s0 = mat [2][2] * mat [1][1] - mat [2][1] * mat [1][2]; |
|
|
546 | double s1 = mat [2][1] * mat [0][2] - mat [2][2] * mat [0][1]; |
|
|
547 | double s2 = mat [1][2] * mat [0][1] - mat [1][1] * mat [0][2]; |
|
|
548 | |
|
|
549 | double invdet = 1. / (mat [0][0] * s0 + mat [1][0] * s1 + mat [2][0] * s2); |
|
|
550 | |
|
|
551 | inv [0][0] = invdet * s0; |
|
|
552 | inv [0][1] = invdet * s1; |
|
|
553 | inv [0][2] = invdet * s2; |
|
|
554 | |
|
|
555 | inv [1][0] = invdet * (mat [2][0] * mat [1][2] - mat [2][2] * mat [1][0]); |
|
|
556 | inv [1][1] = invdet * (mat [2][2] * mat [0][0] - mat [2][0] * mat [0][2]); |
|
|
557 | inv [1][2] = invdet * (mat [1][0] * mat [0][2] - mat [1][2] * mat [0][0]); |
|
|
558 | |
|
|
559 | inv [2][0] = invdet * (mat [2][1] * mat [1][0] - mat [2][0] * mat [1][1]); |
|
|
560 | inv [2][1] = invdet * (mat [2][0] * mat [0][1] - mat [2][1] * mat [0][0]); |
|
|
561 | inv [2][2] = invdet * (mat [1][1] * mat [0][0] - mat [1][0] * mat [0][1]); |
|
|
562 | } |
|
|
563 | |
|
|
564 | static double |
|
|
565 | mat_apply (double mat[3][3], int i, double x, double y) |
|
|
566 | { |
|
|
567 | double v = mat [i][0] * x + mat [i][1] * y + mat [i][2]; |
|
|
568 | double w = mat [2][0] * x + mat [2][1] * y + mat [2][2]; |
|
|
569 | |
|
|
570 | return v * (1. / w); |
|
|
571 | } |
|
|
572 | |
|
|
573 | rxvt_img * |
|
|
574 | rxvt_img::transform (double matrix[3][3]) |
|
|
575 | { |
|
|
576 | // find new offset |
|
|
577 | int ox = mat_apply (matrix, 0, x, y); |
|
|
578 | int oy = mat_apply (matrix, 1, x, y); |
|
|
579 | |
|
|
580 | // calculate new pixel bounding box coordinates |
|
|
581 | double d [2], rmin[2], rmax[2]; |
|
|
582 | |
|
|
583 | for (int i = 0; i < 2; ++i) |
|
|
584 | { |
|
|
585 | double v; |
|
|
586 | v = mat_apply (matrix, i, 0, 0); rmin [i] = rmax [i] = v; d [i] = v; |
|
|
587 | v = mat_apply (matrix, i, w, 0); min_it (rmin [i], v); max_it (rmax [i], v); |
|
|
588 | v = mat_apply (matrix, i, 0, h); min_it (rmin [i], v); max_it (rmax [i], v); |
|
|
589 | v = mat_apply (matrix, i, w, h); min_it (rmin [i], v); max_it (rmax [i], v); |
|
|
590 | } |
|
|
591 | |
|
|
592 | int dx = floor (rmin [0]); |
|
|
593 | int dy = floor (rmin [1]); |
|
|
594 | |
|
|
595 | int new_width = ceil (rmax [0] - dx); |
|
|
596 | int new_height = ceil (rmax [1] - dy); |
|
|
597 | |
|
|
598 | double inv[3][3]; |
|
|
599 | mat_invert (matrix, inv); |
|
|
600 | |
|
|
601 | rxvt_img *img = new rxvt_img (s, format, ox - dx - d [0], oy - dy - d [1], new_width, new_height, repeat); |
|
|
602 | img->alloc (); |
|
|
603 | |
|
|
604 | Display *dpy = s->display->dpy; |
|
|
605 | Picture src = src_picture (); |
|
|
606 | Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0); |
|
|
607 | |
|
|
608 | XTransform xfrm; |
|
|
609 | |
|
|
610 | for (int i = 0; i < 3; ++i) |
|
|
611 | for (int j = 0; j < 3; ++j) |
|
|
612 | xfrm.matrix [i][j] = XDoubleToFixed (inv [i][j]); |
|
|
613 | |
|
|
614 | XRenderSetPictureFilter (dpy, src, "good", 0, 0); |
|
|
615 | XRenderSetPictureTransform (dpy, src, &xfrm); |
|
|
616 | XRenderComposite (dpy, PictOpSrc, src, None, dst, dx, dy, 0, 0, 0, 0, new_width, new_height); |
|
|
617 | |
|
|
618 | XRenderFreePicture (dpy, src); |
|
|
619 | XRenderFreePicture (dpy, dst); |
|
|
620 | |
|
|
621 | return img; |
92 | } |
622 | } |
93 | |
623 | |
94 | rxvt_img * |
624 | rxvt_img * |
95 | rxvt_img::scale (int new_width, int new_height) |
625 | rxvt_img::scale (int new_width, int new_height) |
96 | { |
626 | { |
97 | // use transform |
627 | if (w == new_width && h == new_height) |
98 | //TODO |
628 | return clone (); |
99 | } |
|
|
100 | |
629 | |
|
|
630 | double matrix[3][3] = { |
|
|
631 | { new_width / (double)w, 0, 0 }, |
|
|
632 | { 0, new_height / (double)h, 0 }, |
|
|
633 | { 0, 0, 1 } |
|
|
634 | }; |
|
|
635 | |
|
|
636 | int old_repeat_mode = repeat; |
|
|
637 | repeat = RepeatPad; // not right, but xrender can't properly scale it seems |
|
|
638 | |
|
|
639 | rxvt_img *img = transform (matrix); |
|
|
640 | |
|
|
641 | repeat = old_repeat_mode; |
|
|
642 | img->repeat = repeat; |
|
|
643 | |
|
|
644 | return img; |
|
|
645 | } |
|
|
646 | |
|
|
647 | rxvt_img * |
|
|
648 | rxvt_img::rotate (int cx, int cy, double phi) |
|
|
649 | { |
|
|
650 | double s = sin (phi); |
|
|
651 | double c = cos (phi); |
|
|
652 | |
|
|
653 | double matrix[3][3] = { |
|
|
654 | { c, -s, cx - c * cx + s * cy }, |
|
|
655 | { s, c, cy - s * cx - c * cy }, |
|
|
656 | { 0, 0, 1 } |
|
|
657 | //{ c, -s, 0 }, |
|
|
658 | //{ s, c, 0 }, |
|
|
659 | //{ 0, 0, 1 } |
|
|
660 | }; |
|
|
661 | |
|
|
662 | //move (-cx, -cy); |
|
|
663 | rxvt_img *img = transform (matrix); |
|
|
664 | //move ( cx, cy); |
|
|
665 | //img->move (cx, cy); |
|
|
666 | |
|
|
667 | return img; |
|
|
668 | } |
|
|
669 | |
|
|
670 | rxvt_img * |
|
|
671 | rxvt_img::convert_format (XRenderPictFormat *new_format, const rgba &bg) |
|
|
672 | { |
|
|
673 | if (new_format == format) |
|
|
674 | return clone (); |
|
|
675 | |
|
|
676 | rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat); |
|
|
677 | img->alloc (); |
|
|
678 | |
|
|
679 | Display *dpy = s->display->dpy; |
|
|
680 | Picture src = src_picture (); |
|
|
681 | Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0); |
|
|
682 | int op = PictOpSrc; |
|
|
683 | |
|
|
684 | if (format->direct.alphaMask && !new_format->direct.alphaMask) |
|
|
685 | { |
|
|
686 | // does it have to be that complicated |
|
|
687 | XRenderColor rc = { bg.r, bg.g, bg.b, bg.a }; |
|
|
688 | XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h); |
|
|
689 | |
|
|
690 | op = PictOpOver; |
|
|
691 | } |
|
|
692 | |
|
|
693 | XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); |
|
|
694 | |
|
|
695 | XRenderFreePicture (dpy, src); |
|
|
696 | XRenderFreePicture (dpy, dst); |
|
|
697 | |
|
|
698 | return img; |
|
|
699 | } |
|
|
700 | |
|
|
701 | rxvt_img * |
|
|
702 | rxvt_img::blend (rxvt_img *img, double factor) |
|
|
703 | { |
|
|
704 | rxvt_img *img2 = clone (); |
|
|
705 | Display *dpy = s->display->dpy; |
|
|
706 | Picture src = img->src_picture (); |
|
|
707 | Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0); |
|
|
708 | Picture mask = create_xrender_mask (dpy, img->pm, False, False); |
|
|
709 | |
|
|
710 | XRenderColor mask_c; |
|
|
711 | |
|
|
712 | mask_c.alpha = float_to_component (factor); |
|
|
713 | mask_c.red = |
|
|
714 | mask_c.green = |
|
|
715 | mask_c.blue = 0; |
|
|
716 | XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1); |
|
|
717 | |
|
|
718 | XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h); |
|
|
719 | |
|
|
720 | XRenderFreePicture (dpy, src); |
|
|
721 | XRenderFreePicture (dpy, dst); |
|
|
722 | XRenderFreePicture (dpy, mask); |
|
|
723 | |
|
|
724 | return img2; |
|
|
725 | } |
101 | |
726 | |
102 | #endif |
727 | #endif |
103 | |
728 | |