X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Fewmh.c;h=6bfa3096ef25c777bf5f8b6d22961d8768022037;hb=b93413ca49c59638e3d0c4854665ca4907a8a15c;hp=2e6e121bcd840bca195d4af9ddd29aea0822cb9d;hpb=e7e9e8e49d3df01c3f534a17e810242b9621058c;p=i3%2Fi3

diff --git a/src/ewmh.c b/src/ewmh.c
index 2e6e121b..6bfa3096 100644
--- a/src/ewmh.c
+++ b/src/ewmh.c
@@ -11,11 +11,15 @@
  *
  */
 #include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
 
 #include "data.h"
 #include "table.h"
 #include "i3.h"
 #include "xcb.h"
+#include "util.h"
+#include "log.h"
 
 /*
  * Updates _NET_CURRENT_DESKTOP with the current desktop number.
@@ -42,3 +46,58 @@ void ewmh_update_active_window(xcb_window_t window) {
         xcb_change_property(global_conn, XCB_PROP_MODE_REPLACE, root,
                             atoms[_NET_ACTIVE_WINDOW], WINDOW, 32, 1, &window);
 }
+
+/*
+ * Updates the workarea for each desktop.
+ *
+ * EWMH: Contains a geometry for each desktop. These geometries specify an area
+ * that is completely contained within the viewport. Work area SHOULD be used by
+ * desktop applications to place desktop icons appropriately.
+ *
+ */
+void ewmh_update_workarea() {
+        Workspace *ws;
+        int num_workspaces = 0, count = 0;
+        Rect last_rect = {0, 0, 0, 0};
+
+        /* Get the number of workspaces */
+        TAILQ_FOREACH(ws, workspaces, workspaces) {
+                /* Check if we need to initialize last_rect. The case that the
+                 * first workspace is all-zero may happen when the user
+                 * assigned workspace 2 for his first screen, for example. Thus
+                 * we need an initialized last_rect in the very first run of
+                 * the following loop. */
+                if (last_rect.width == 0 && last_rect.height == 0 &&
+                    ws->rect.width != 0 && ws->rect.height != 0) {
+                        memcpy(&last_rect, &(ws->rect), sizeof(Rect));
+                }
+                num_workspaces++;
+        }
+
+        DLOG("Got %d workspaces\n", num_workspaces);
+        uint8_t *workarea = smalloc(sizeof(Rect) * num_workspaces);
+        TAILQ_FOREACH(ws, workspaces, workspaces) {
+                DLOG("storing %d: %dx%d with %d x %d\n", count, ws->rect.x,
+                     ws->rect.y, ws->rect.width, ws->rect.height);
+                /* If a workspace is not yet initialized and thus its
+                 * dimensions are zero, we will instead put the dimensions
+                 * of the last workspace in the list. For example firefox
+                 * intersects all workspaces and does not cope so well with
+                 * an all-zero workspace. */
+                if (ws->rect.width == 0 || ws->rect.height == 0) {
+                        DLOG("re-using last_rect (%dx%d, %d, %d)\n",
+                             last_rect.x, last_rect.y, last_rect.width,
+                             last_rect.height);
+                        memcpy(workarea + (sizeof(Rect) * count++), &last_rect, sizeof(Rect));
+                        continue;
+                }
+                memcpy(workarea + (sizeof(Rect) * count++), &(ws->rect), sizeof(Rect));
+                memcpy(&last_rect, &(ws->rect), sizeof(Rect));
+        }
+        xcb_change_property(global_conn, XCB_PROP_MODE_REPLACE, root,
+                            atoms[_NET_WORKAREA], CARDINAL, 32,
+                            num_workspaces * (sizeof(Rect) / sizeof(uint32_t)),
+                            workarea);
+        free(workarea);
+        xcb_flush(global_conn);
+}