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, 4 insertions, 1 deletions

diff --git a/src/wayland.hpp b/src/wayland.hpp
index 59d7ade..df5d198 100644
--- a/src/wayland.hpp
+++ b/src/wayland.hpp
@@ -96,6 +96,8 @@ struct display {
 struct output : wayland_proxy<struct wl_output> {
    int width{};
    int height{};
+   int physical_width{};
+   int physical_height{};
    int refresh{};
    int transform{};
 
@@ -250,7 +252,8 @@ struct controller : public wayland_proxy<struct ivi_controller> {
    layer_map_type layers;
    screen_map_type screens;
 
-   size output_size;
+   size output_size;   // Display size[pixel]
+   size physical_size; // Display size[mm]
 
    wm::controller_hooks *chooks;