| … | |
… | |
| 59 | } |
59 | } |
| 60 | |
60 | |
| 61 | rxvt_img * |
61 | rxvt_img * |
| 62 | rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
62 | rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb) |
| 63 | { |
63 | { |
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64 | Display *dpy = s->display->dpy; |
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65 | |
| 64 | int width = gdk_pixbuf_get_width (pb); |
66 | int width = gdk_pixbuf_get_width (pb); |
| 65 | int height = gdk_pixbuf_get_height (pb); |
67 | int height = gdk_pixbuf_get_height (pb); |
| 66 | |
68 | |
| 67 | if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
69 | if (width > 32767 || height > 32767) // well, we *could* upload in chunks |
| 68 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
70 | rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n"); |
| 69 | |
71 | |
| 70 | // since we require rgb24/argb32 formats from xrender we assume |
72 | // since we require rgb24/argb32 formats from xrender we assume |
| 71 | // that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
73 | // that both 24 and 32 bpp MUST be supported by any screen that supports xrender |
| 72 | int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
74 | int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24; |
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75 | |
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76 | int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst; |
| 73 | |
77 | |
| 74 | XImage xi; |
78 | XImage xi; |
| 75 | |
79 | |
| 76 | xi.width = width; |
80 | xi.width = width; |
| 77 | xi.height = height; |
81 | xi.height = height; |
| 78 | xi.xoffset = 0; |
82 | xi.xoffset = 0; |
| 79 | xi.format = ZPixmap; |
83 | xi.format = ZPixmap; |
| 80 | xi.byte_order = MSBFirst; // maybe go for host byte order, because servers are usually local? |
84 | xi.byte_order = ImageByteOrder (dpy); |
| 81 | xi.bitmap_unit = 32; |
85 | xi.bitmap_unit = 0; //XY only, unused |
| 82 | xi.bitmap_bit_order = MSBFirst; |
86 | xi.bitmap_bit_order = 0; //XY only, unused |
| 83 | xi.bitmap_pad = 32; |
87 | xi.bitmap_pad = BitmapPad (dpy); |
| 84 | xi.depth = depth; |
88 | xi.depth = depth; |
| 85 | xi.bytes_per_line = 0; |
89 | xi.bytes_per_line = 0; |
| 86 | xi.bits_per_pixel = 32; |
90 | xi.bits_per_pixel = 32; //Z only |
| 87 | xi.red_mask = 0x00ff0000; |
91 | xi.red_mask = 0x00000000; //Z only, unused |
| 88 | xi.green_mask = 0x0000ff00; |
92 | xi.green_mask = 0x00000000; //Z only, unused |
| 89 | xi.blue_mask = 0x000000ff; |
93 | xi.blue_mask = 0x00000000; //Z only, unused |
|
|
94 | xi.obdata = 0; // probably unused |
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95 | |
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96 | bool byte_order_mismatch = byte_order != xi.byte_order; |
| 90 | |
97 | |
| 91 | if (!XInitImage (&xi)) |
98 | if (!XInitImage (&xi)) |
| 92 | rxvt_fatal ("unable to initialise ximage, please report.\n"); |
99 | rxvt_fatal ("unable to initialise ximage, please report.\n"); |
| 93 | |
100 | |
| 94 | if (height > INT_MAX / xi.bytes_per_line) |
101 | if (height > INT_MAX / xi.bytes_per_line) |
| … | |
… | |
| 102 | unsigned char *row = gdk_pixbuf_get_pixels (pb); |
109 | unsigned char *row = gdk_pixbuf_get_pixels (pb); |
| 103 | char *line = xi.data; |
110 | char *line = xi.data; |
| 104 | |
111 | |
| 105 | for (int y = 0; y < height; y++) |
112 | for (int y = 0; y < height; y++) |
| 106 | { |
113 | { |
| 107 | unsigned char r, g, b, a; |
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| 108 | unsigned char *data = row; |
114 | unsigned char *src = row; |
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115 | uint32_t *dst = (uint32_t *)line; |
| 109 | |
116 | |
| 110 | if (depth == 24) |
117 | if (depth == 24) |
| 111 | for (int x = 0; x < width; x++) |
118 | for (int x = 0; x < width; x++) |
| 112 | { |
119 | { |
| 113 | r = *data++; |
120 | uint8_t r = *src++; |
| 114 | g = *data++; |
121 | uint8_t g = *src++; |
| 115 | b = *data++; |
122 | uint8_t b = *src++; |
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123 | |
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124 | uint32_t v = (r << 16) | (g << 8) | b; |
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125 | |
|
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126 | if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch) |
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127 | v = ecb_bswap32 (v); |
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128 | |
| 116 | *line++ = 0; |
129 | *dst++ = v; |
| 117 | *line++ = r; |
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| 118 | *line++ = g; |
|
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| 119 | *line++ = b; |
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|
| 120 | } |
130 | } |
| 121 | else |
131 | else |
| 122 | for (int x = 0; x < width; x++) |
132 | for (int x = 0; x < width; x++) |
| 123 | { |
133 | { |
| 124 | r = *data++; |
134 | uint32_t v = *(uint32_t *)src; src += 4; |
| 125 | g = *data++; |
135 | |
| 126 | b = *data++; |
136 | if (ecb_big_endian ()) |
| 127 | a = *data++; |
137 | v = ecb_bswap32 (v); |
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138 | |
|
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139 | v = ecb_rotl32 (v, 8); // abgr to bgra |
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140 | |
|
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141 | if (!byte_order_mismatch) |
|
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142 | v = ecb_bswap32 (v); |
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143 | |
| 128 | *line++ = a; |
144 | *dst++ = v; |
| 129 | *line++ = r; |
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| 130 | *line++ = g; |
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|
| 131 | *line++ = b; |
|
|
| 132 | } |
145 | } |
| 133 | |
146 | |
| 134 | row += rowstride; |
147 | row += rowstride; |
|
|
148 | line += xi.bytes_per_line; |
| 135 | } |
149 | } |
| 136 | |
|
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| 137 | Display *dpy = s->display->dpy; |
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|
| 138 | |
150 | |
| 139 | rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); |
151 | rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height); |
| 140 | img->alloc (); |
152 | img->alloc (); |
| 141 | |
153 | |
| 142 | GC gc = XCreateGC (dpy, img->pm, 0, 0); |
154 | GC gc = XCreateGC (dpy, img->pm, 0, 0); |
