implement solid color rendering for swaybg

2 files changed, 15 insertions, 0 deletions

diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 9c2c0a99..3d6e0fb9 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -12,6 +12,8 @@ add_library(sway-common STATIC
         stringop.c
         )
 
+target_link_libraries(sway-common m)
+
 if(Backtrace_FOUND)
         set_target_properties(sway-common
                 PROPERTIES
diff --git a/common/util.c b/common/util.c
index 31a75a9b..86120769 100644
--- a/common/util.c
+++ b/common/util.c
@@ -97,3 +97,16 @@ pid_t get_parent_pid(pid_t child) {
 
         return -1;
 }
+
+uint32_t parse_color(const char *color) {
+        int len = strlen(color);
+        if (color[0] != '#' || (len != 7 && len != 9)) {
+                sway_log(L_DEBUG, "Invalid color %s, defaulting to color 0xFFFFFFFF", color);
+                return 0xFFFFFFFF;
+        }
+        uint32_t res = (uint32_t)strtol(color + 1, NULL, 16);
+        if (strlen(color) == 7) {
+                res = (res << 8) | 0xFF;
+        }
+        return res;
+}