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, 3 insertions, 0 deletions

diff --git a/src/wayland.cpp b/src/wayland.cpp
index 53668d2..9361b74 100644
--- a/src/wayland.cpp
+++ b/src/wayland.cpp
@@ -148,6 +148,8 @@ void output::geometry(int32_t x, int32_t y, int32_t pw, int32_t ph,
    HMI_DEBUG("wm",
       "wl::output %s @ %p x %i y %i w %i h %i spel %x make %s model %s tx %i",
       __func__, this->proxy.get(), x, y, pw, ph, subpel, make, model, tx);
+   this->physical_width = pw;
+   this->physical_height = ph;
    this->transform = tx;
 }
 
@@ -169,6 +171,7 @@ void output::done() {
        this->transform == WL_OUTPUT_TRANSFORM_FLIPPED_90 ||
        this->transform == WL_OUTPUT_TRANSFORM_FLIPPED_270) {
       std::swap(this->width, this->height);
+      std::swap(this->physical_width, this->physical_height);
    }
 }