Merge pull request #317 from guyhughes/fix-doc

[bspwm.git] / helpers.c

diff --git a/helpers.c b/helpers.c
index 8813e2f0cfd23e244b7a7b5a91f9247115ac99a8..eb4529e3722a379e5300075d8d66a18705fba85b 100644 (file)
--- a/helpers.c
+++ b/helpers.c
@@ -1,62 +1,85 @@
+/* Copyright (c) 2012, Bastien Dejean
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
 #include <stdlib.h>
 #include <string.h>
-#include <xcb/xcb.h>
-#include <xcb/xcb_event.h>
+#include <math.h>
 #include "bspwm.h"
-#include "helpers.h"
 
 void warn(char *fmt, ...)
 {
-    va_list ap;
-    va_start(ap, fmt);
-    vfprintf(stderr, fmt, ap);
-    va_end(ap);
+       va_list ap;
+       va_start(ap, fmt);
+       vfprintf(stderr, fmt, ap);
+       va_end(ap);
 }
 
 __attribute__((noreturn))
 void err(char *fmt, ...)
 {
-    va_list ap;
-    va_start(ap, fmt);
-    vfprintf(stderr, fmt, ap);
-    va_end(ap);
-    exit(EXIT_FAILURE);
+       va_list ap;
+       va_start(ap, fmt);
+       vfprintf(stderr, fmt, ap);
+       va_end(ap);
+       exit(EXIT_FAILURE);
 }
 
-uint32_t get_color(char *col)
+bool get_color(char *col, xcb_window_t win, uint32_t *pxl)
 {
-    xcb_colormap_t map = screen->default_colormap;
-    uint32_t pxl = 0;
-
-    if (col[0] == '#') {
-        unsigned int red, green, blue;
-        if (sscanf(col + 1, "%02x%02x%02x", &red, &green, &blue) == 3) {
-            /* 2**16 - 1 == 0xffff and 0x101 * 0xij == 0xijij */
-            red *= 0x101;
-            green *= 0x101;
-            blue *= 0x101;
-            xcb_alloc_color_reply_t *reply = xcb_alloc_color_reply(dpy, xcb_alloc_color(dpy, map, red, green, blue), NULL);
-            if (reply != NULL) {
-                pxl = reply->pixel;
-                free(reply);
-            }
-        }
-    } else {
-        xcb_alloc_named_color_reply_t *reply = xcb_alloc_named_color_reply(dpy, xcb_alloc_named_color(dpy, map, strlen(col), col), NULL);
-        if (reply != NULL) {
-            pxl = reply->pixel;
-            free(reply);
-        }
-    }
+       xcb_colormap_t map = screen->default_colormap;
+       xcb_get_window_attributes_reply_t *reply = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
+       if (reply != NULL)
+               map = reply->colormap;
+       free(reply);
 
-    return pxl;
+       if (col[0] == '#') {
+               unsigned int red, green, blue;
+               if (sscanf(col + 1, "%02x%02x%02x", &red, &green, &blue) == 3) {
+                       /* 2**16 - 1 == 0xffff and 0x101 * 0xij == 0xijij */
+                       red *= 0x101;
+                       green *= 0x101;
+                       blue *= 0x101;
+                       xcb_alloc_color_reply_t *reply = xcb_alloc_color_reply(dpy, xcb_alloc_color(dpy, map, red, green, blue), NULL);
+                       if (reply != NULL) {
+                               *pxl = reply->pixel;
+                               free(reply);
+                               return true;
+                       }
+               }
+       } else {
+               xcb_alloc_named_color_reply_t *reply = xcb_alloc_named_color_reply(dpy, xcb_alloc_named_color(dpy, map, strlen(col), col), NULL);
+               if (reply != NULL) {
+                       *pxl = reply->pixel;
+                       free(reply);
+                       return true;
+               }
+       }
+       *pxl = 0;
+       return false;
 }
 
-void get_pointer_position(xcb_point_t *pos)
+double distance(xcb_point_t a, xcb_point_t b)
 {
-    xcb_query_pointer_reply_t *qpr = xcb_query_pointer_reply(dpy, xcb_query_pointer(dpy, screen->root), NULL);
-    if (qpr != NULL) {
-        *pos = (xcb_point_t) {qpr->root_x, qpr->root_y};
-        free(qpr);
-    }
+       return hypot(a.x - b.x, a.y - b.y);
 }