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author | Drew DeVault <sir@cmpwn.com> | 2015-12-10 07:57:46 -0500 |
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committer | Drew DeVault <sir@cmpwn.com> | 2015-12-10 07:57:46 -0500 |
commit | 080a263785cfa4b7f54b90b1fed7a8356714d5d0 (patch) | |
tree | 666cb4f8722c6a2dffc1df44a995655bc2b7e9da /swaybg | |
parent | Add swaylock subproject (diff) | |
download | sway-080a263785cfa4b7f54b90b1fed7a8356714d5d0.tar.gz sway-080a263785cfa4b7f54b90b1fed7a8356714d5d0.tar.zst sway-080a263785cfa4b7f54b90b1fed7a8356714d5d0.zip |
Refactor gdk pixbuf code into shared client lib
Diffstat (limited to 'swaybg')
-rw-r--r-- | swaybg/CMakeLists.txt | 4 | ||||
-rw-r--r-- | swaybg/main.c | 109 |
2 files changed, 4 insertions, 109 deletions
diff --git a/swaybg/CMakeLists.txt b/swaybg/CMakeLists.txt index 2588f9e7..4dc961ff 100644 --- a/swaybg/CMakeLists.txt +++ b/swaybg/CMakeLists.txt | |||
@@ -2,8 +2,8 @@ include_directories( | |||
2 | ${PROTOCOLS_INCLUDE_DIRS} | 2 | ${PROTOCOLS_INCLUDE_DIRS} |
3 | ${WAYLAND_CLIENT_INCLUDE_DIR} | 3 | ${WAYLAND_CLIENT_INCLUDE_DIR} |
4 | ${CAIRO_INCLUDE_DIRS} | 4 | ${CAIRO_INCLUDE_DIRS} |
5 | ${GDK_PIXBUF_INCLUDE_DIRS} | ||
6 | ${PANGO_INCLUDE_DIRS} | 5 | ${PANGO_INCLUDE_DIRS} |
6 | ${GDK_PIXBUF_INCLUDE_DIRS} | ||
7 | ) | 7 | ) |
8 | 8 | ||
9 | add_executable(swaybg | 9 | add_executable(swaybg |
@@ -16,8 +16,8 @@ target_link_libraries(swaybg | |||
16 | ${WAYLAND_CLIENT_LIBRARIES} | 16 | ${WAYLAND_CLIENT_LIBRARIES} |
17 | ${WAYLAND_CURSOR_LIBRARIES} | 17 | ${WAYLAND_CURSOR_LIBRARIES} |
18 | ${CAIRO_LIBRARIES} | 18 | ${CAIRO_LIBRARIES} |
19 | ${GDK_PIXBUF_LIBRARIES} | ||
20 | ${PANGO_LIBRARIES} | 19 | ${PANGO_LIBRARIES} |
20 | ${GDK_PIXBUF_LIBRARIES} | ||
21 | m | 21 | m |
22 | ) | 22 | ) |
23 | 23 | ||
diff --git a/swaybg/main.c b/swaybg/main.c index f21d9e05..6b81d97c 100644 --- a/swaybg/main.c +++ b/swaybg/main.c | |||
@@ -4,9 +4,9 @@ | |||
4 | #include <wayland-client.h> | 4 | #include <wayland-client.h> |
5 | #include <time.h> | 5 | #include <time.h> |
6 | #include <string.h> | 6 | #include <string.h> |
7 | #include <gdk-pixbuf/gdk-pixbuf.h> | ||
8 | #include "client/window.h" | 7 | #include "client/window.h" |
9 | #include "client/registry.h" | 8 | #include "client/registry.h" |
9 | #include "client/cairo.h" | ||
10 | #include "log.h" | 10 | #include "log.h" |
11 | #include "list.h" | 11 | #include "list.h" |
12 | 12 | ||
@@ -22,111 +22,6 @@ enum scaling_mode { | |||
22 | SCALING_MODE_TILE, | 22 | SCALING_MODE_TILE, |
23 | }; | 23 | }; |
24 | 24 | ||
25 | |||
26 | #ifndef GDK_PIXBUF_CHECK_VERSION | ||
27 | #define GDK_PIXBUF_CHECK_VERSION(major,minor,micro) \ | ||
28 | (GDK_PIXBUF_MAJOR > (major) || \ | ||
29 | (GDK_PIXBUF_MAJOR == (major) && GDK_PIXBUF_MINOR > (minor)) || \ | ||
30 | (GDK_PIXBUF_MAJOR == (major) && GDK_PIXBUF_MINOR == (minor) && \ | ||
31 | GDK_PIXBUF_MICRO >= (micro))) | ||
32 | #endif | ||
33 | |||
34 | cairo_surface_t* __gdk_cairo_image_surface_create_from_pixbuf(const GdkPixbuf *gdkbuf) | ||
35 | { | ||
36 | |||
37 | int chan = gdk_pixbuf_get_n_channels(gdkbuf); | ||
38 | if (chan < 3) return NULL; | ||
39 | |||
40 | #if GDK_PIXBUF_CHECK_VERSION(2,32,0) | ||
41 | const guint8* gdkpix = gdk_pixbuf_read_pixels(gdkbuf); | ||
42 | #else | ||
43 | const guint8* gdkpix = gdk_pixbuf_get_pixels(gdkbuf); | ||
44 | #endif | ||
45 | if (!gdkpix) { | ||
46 | return NULL; | ||
47 | } | ||
48 | gint w = gdk_pixbuf_get_width(gdkbuf); | ||
49 | gint h = gdk_pixbuf_get_height(gdkbuf); | ||
50 | int stride = gdk_pixbuf_get_rowstride(gdkbuf); | ||
51 | |||
52 | cairo_format_t fmt = (chan == 3) ? CAIRO_FORMAT_RGB24 : CAIRO_FORMAT_ARGB32; | ||
53 | cairo_surface_t * cs = cairo_image_surface_create (fmt, w, h); | ||
54 | cairo_surface_flush (cs); | ||
55 | if ( !cs || cairo_surface_status(cs) != CAIRO_STATUS_SUCCESS) { | ||
56 | return NULL; | ||
57 | } | ||
58 | |||
59 | int cstride = cairo_image_surface_get_stride(cs); | ||
60 | unsigned char * cpix = cairo_image_surface_get_data(cs); | ||
61 | |||
62 | if (chan == 3) { | ||
63 | int i; | ||
64 | for (i = h; i; --i) { | ||
65 | const guint8 *gp = gdkpix; | ||
66 | unsigned char *cp = cpix; | ||
67 | const guint8* end = gp + 3*w; | ||
68 | while (gp < end) { | ||
69 | #if G_BYTE_ORDER == G_LITTLE_ENDIAN | ||
70 | cp[0] = gp[2]; | ||
71 | cp[1] = gp[1]; | ||
72 | cp[2] = gp[0]; | ||
73 | #else | ||
74 | cp[1] = gp[0]; | ||
75 | cp[2] = gp[1]; | ||
76 | cp[3] = gp[2]; | ||
77 | #endif | ||
78 | gp += 3; | ||
79 | cp += 4; | ||
80 | } | ||
81 | gdkpix += stride; | ||
82 | cpix += cstride; | ||
83 | } | ||
84 | } else { | ||
85 | /* premul-color = alpha/255 * color/255 * 255 = (alpha*color)/255 | ||
86 | * (z/255) = z/256 * 256/255 = z/256 (1 + 1/255) | ||
87 | * = z/256 + (z/256)/255 = (z + z/255)/256 | ||
88 | * # recurse once | ||
89 | * = (z + (z + z/255)/256)/256 | ||
90 | * = (z + z/256 + z/256/255) / 256 | ||
91 | * # only use 16bit uint operations, loose some precision, | ||
92 | * # result is floored. | ||
93 | * -> (z + z>>8)>>8 | ||
94 | * # add 0x80/255 = 0.5 to convert floor to round | ||
95 | * => (z+0x80 + (z+0x80)>>8 ) >> 8 | ||
96 | * ------ | ||
97 | * tested as equal to lround(z/255.0) for uint z in [0..0xfe02] | ||
98 | */ | ||
99 | #define PREMUL_ALPHA(x,a,b,z) G_STMT_START { z = a * b + 0x80; x = (z + (z >> 8)) >> 8; } G_STMT_END | ||
100 | int i; | ||
101 | for (i = h; i; --i) { | ||
102 | const guint8 *gp = gdkpix; | ||
103 | unsigned char *cp = cpix; | ||
104 | const guint8* end = gp + 4*w; | ||
105 | guint z1, z2, z3; | ||
106 | while (gp < end) { | ||
107 | #if G_BYTE_ORDER == G_LITTLE_ENDIAN | ||
108 | PREMUL_ALPHA(cp[0], gp[2], gp[3], z1); | ||
109 | PREMUL_ALPHA(cp[1], gp[1], gp[3], z2); | ||
110 | PREMUL_ALPHA(cp[2], gp[0], gp[3], z3); | ||
111 | cp[3] = gp[3]; | ||
112 | #else | ||
113 | PREMUL_ALPHA(cp[1], gp[0], gp[3], z1); | ||
114 | PREMUL_ALPHA(cp[2], gp[1], gp[3], z2); | ||
115 | PREMUL_ALPHA(cp[3], gp[2], gp[3], z3); | ||
116 | cp[0] = gp[3]; | ||
117 | #endif | ||
118 | gp += 4; | ||
119 | cp += 4; | ||
120 | } | ||
121 | gdkpix += stride; | ||
122 | cpix += cstride; | ||
123 | } | ||
124 | #undef PREMUL_ALPHA | ||
125 | } | ||
126 | cairo_surface_mark_dirty(cs); | ||
127 | return cs; | ||
128 | } | ||
129 | |||
130 | void sway_terminate(void) { | 25 | void sway_terminate(void) { |
131 | int i; | 26 | int i; |
132 | for (i = 0; i < surfaces->length; ++i) { | 27 | for (i = 0; i < surfaces->length; ++i) { |
@@ -167,7 +62,7 @@ int main(int argc, const char **argv) { | |||
167 | if (!pixbuf) { | 62 | if (!pixbuf) { |
168 | sway_abort("Failed to load background image."); | 63 | sway_abort("Failed to load background image."); |
169 | } | 64 | } |
170 | cairo_surface_t *image = __gdk_cairo_image_surface_create_from_pixbuf(pixbuf); | 65 | cairo_surface_t *image = gdk_cairo_image_surface_create_from_pixbuf(pixbuf); |
171 | g_object_unref(pixbuf); | 66 | g_object_unref(pixbuf); |
172 | if (!image) { | 67 | if (!image) { |
173 | sway_abort("Failed to read background image."); | 68 | sway_abort("Failed to read background image."); |