Add APIs which can get information of display and area

getDisplayInfo() can get the display information as follows:
 - width[pixel]
 - height[pixel]
 - width[mm]
 - height[mm]

  NOTE:
    It uses wl_output::geometry() for getting physical width[mm] and height[mm] of the display,
    but the value is different with measured value.

    value from wl_output::geometry(): width:320 height:520
    measured value                  : width:193 height:343

getAreaInfo() can get the information of area drawn by the application as follows:
 - x-coordinate
 - y-coordinate
 - width
 - height

The details are described in doc/ApplicationGuide.md.

Change-Id: I41eec6251527862ef25d1b84cd37d736d3f9c8aa
Signed-off-by: Yuta Doi <yuta-d@witz-inc.co.jp>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/afb_binding_api.cpp b/src/afb_binding_api.cpp
index 3c75524..825bc99 100644
--- a/src/afb_binding_api.cpp
+++ b/src/afb_binding_api.cpp
@@ -69,6 +69,23 @@ binding_api::result_type binding_api::enddraw(char const* drawing_name) {
    return Ok(json_object_new_object());
 }
 
+binding_api::result_type binding_api::getdisplayinfo() {
+   auto r = this->app->api_get_display_info();
+   if (r.is_err()) {
+      return Err<json_object *>(r.unwrap_err());
+   }
+   return Ok(r.unwrap());
+}
+
+binding_api::result_type binding_api::getareainfo(
+   char const *drawing_name) {
+   auto r = this->app->api_get_area_info(drawing_name);
+   if (r.is_err()) {
+      return Err<json_object *>(r.unwrap_err());
+   }
+   return Ok(r.unwrap());
+}
+
 binding_api::result_type binding_api::list_drawing_names() {
    HMI_DEBUG("wm", "%s", __func__);
    json j = this->app->id_alloc.name2id;