Changeset aeb3037 in mainline for uspace/lib/display/src

Timestamp:

2020-03-18T17:27:18Z (5 years ago)

Author:

Jiri Svoboda <jiri@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0680854

Parents:

1a1271d

git-author:

Jiri Svoboda <jiri@…> (2020-03-18 16:57:15)

git-committer:

Jiri Svoboda <jiri@…> (2020-03-18 17:27:18)

Message:

Allow getting display dimensions

Can be used to position special windows such as panels, or to help
emulate libgui's window placement policy. To support multi-monitor
setups we would rather need to be able to query individual monitors.
But let's keep things simple for now.

Location:

uspace/lib/display/src

Files:

• disp_srv.c (modified) (3 diffs)
• display.c (modified) (2 diffs)

uspace/lib/display/src/disp_srv.c

@@ -37 +37 @@
 #include <disp_srv.h>
 #include <display/event.h>
+#include <display/info.h>
 #include <display/wndresize.h>
 #include <errno.h>
@@ -268 +269 @@
 }
 
+static void display_get_info_srv(display_srv_t *srv, ipc_call_t *icall)
+{
+        display_info_t info;
+        ipc_call_t call;
+        size_t size;
+        errno_t rc;
+
+        if (srv->ops->get_info == NULL) {
+                async_answer_0(icall, ENOTSUP);
+                return;
+        }
+
+        /* Transfer information */
+        if (!async_data_read_receive(&call, &size)) {
+                async_answer_0(icall, EREFUSED);
+                return;
+        }
+
+        if (size != sizeof(info)) {
+                async_answer_0(icall, EREFUSED);
+                async_answer_0(&call, EREFUSED);
+                return;
+        }
+
+        rc = srv->ops->get_info(srv->arg, &info);
+        if (rc != EOK) {
+                async_answer_0(icall, rc);
+                async_answer_0(&call, rc);
+                return;
+        }
+
+        rc = async_data_read_finalize(&call, &info, sizeof(info));
+        if (rc != EOK) {
+                async_answer_0(icall, rc);
+                async_answer_0(&call, rc);
+                return;
+        }
+
+        async_answer_0(icall, EOK);
+}
+
 void display_conn(ipc_call_t *icall, display_srv_t *srv)
 {
@@ -306 +348 @@
                 case DISPLAY_GET_EVENT:
                         display_get_event_srv(srv, &call);
+                        break;
+                case DISPLAY_GET_INFO:
+                        display_get_info_srv(srv, &call);
                         break;
                 default:

uspace/lib/display/src/display.c

@@ -385 +385 @@
  *
  * @param display Display
- * @param rwindow Place to store pointe to window that received event
+ * @param rwindow Place to store pointer to window that received event
  * @param event Place to store event
  * @return EOK on success or an error code
@@ -418 +418 @@
 
         *rwindow = window;
+        return EOK;
+}
+
+/** Get display information.
+ *
+ * @param display Display
+ * @param info Place to store display information
+ * @return EOK on success or an error code
+ */
+errno_t display_get_info(display_t *display, display_info_t *info)
+{
+        async_exch_t *exch;
+        ipc_call_t answer;
+        aid_t req;
+        errno_t rc;
+
+        exch = async_exchange_begin(display->sess);
+        req = async_send_0(exch, DISPLAY_GET_INFO, &answer);
+        rc = async_data_read_start(exch, info, sizeof(*info));
+        async_exchange_end(exch);
+        if (rc != EOK) {
+                async_forget(req);
+                return rc;
+        }
+
+        async_wait_for(req, &rc);
+        if (rc != EOK)
+                return rc;
+
         return EOK;
 }