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authorYuta Doi <yuta-d@witz-inc.co.jp>2017-12-11 11:38:01 +0900
committerYuta Doi <yuta-d@witz-inc.co.jp>2017-12-11 11:38:01 +0900
commit6aaba1066fe89f324d4bae67497f4035fe997d5f (patch)
tree89ecc85436fcc1e5567d6dfa8f10dadee0121c61 /doc
parent7fb167a27e9e12ef38c5942cf73679bff12a5b25 (diff)
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>
Diffstat (limited to 'doc')
-rw-r--r--doc/ApplicationGuide.md59
1 files changed, 58 insertions, 1 deletions
diff --git a/doc/ApplicationGuide.md b/doc/ApplicationGuide.md
index 7888292..d66f20b 100644
--- a/doc/ApplicationGuide.md
+++ b/doc/ApplicationGuide.md
@@ -517,6 +517,10 @@ This is the public interface of the class `LibWindowmanager`.
int activateSurface(json_object *object);
int deactivateSurface(json_object *object);
int endDraw(json_object *object);
+ int getDisplayInfo(json_object *object);
+ int getAreaInfo(json_object *in_obj, json_object *out_obj);
+
+ int getAreaInfo(const char *label, json_object *out_obj);
void set_event_handler(enum EventType et, handler_fun f);
@@ -580,6 +584,56 @@ It is not crucial to make this call at every time a drawing is finished
drawing in case of layout switch. The exact semantics are explained in
the next [Events](#_events) Section.
+### getDisplayInfo(json_object *object)
+
+**args: `{ }`**
+This function gets the display information as follows:
+ - width[pixel]
+ - height[pixel]
+ - width[mm]
+ - height[mm]
+
+It outputs the display information for json_object in the argument as follows:
+ `{"width_pixel": int value of width[pixel], "height_pixel": int value of height[pixel],
+ "width_mm": int value of width[mm], "height_mm": int value of height[mm]}`
+
+It should be called after calling init().
+It should not be called in the event handler because it occurs hang-up.
+
+#### 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(json_object *in_obj, json_object *out_obj)
+
+**args1: `{ 'kKeyDrawingName': 'application name' }`**
+**args2: `{ }`**
+This function gets the information of area drawn by the application as follows:
+ - x-coordinate
+ - y-coordinate
+ - width
+ - height
+
+It outputs the area information for json_object in the 2nd argument as follows:
+ `{"x": int value of x-coordinate, "y": int value of y-coordinate,
+ "width": int value of width, "height": int value of height}`
+
+It should be called after calling activateSurface().
+It should not be called in the event handler because it occurs hang-up.
+
+#### NOTE
+The same information can given by SyncDraw event.
+
+### getAreaInfo(const char *label, json_object *out_obj)
+
+**args1: String of application name**
+**args2: `{ }`**
+This function is same with `getAreaInfo(json_object *in_obj, json_object *out_obj)`,
+but only has difference of 1st argument.
+
### set\_event\_handler(enum EventType et, handler_fun f)
This method needs to be used to register event handlers for the WM
@@ -705,11 +759,14 @@ contents - again, this is handled implicitly by the wayland protocol.
that is *signal* the compositor that its surface contains new content.
- `SyncDraw(json_object *object)`
- args: { 'kKeyDrawingName': 'application name', 'kKeyDrawingArea': 'layout' }
+ args: { 'kKeyDrawingName': 'application name', 'kKeyDrawingArea': 'layout',
+ 'kKeyDrawingRect': { "x": int value of x-coordinate, "y": int value of y-coordinate,
+ "width": int value of width, "height": int value of height } }
Signal applications, that the
surface with name `kKeyDrawingArea` needs to redraw its content
in the layout with name `kKeyDrawingArea` - this
usually is sent when the surface geometry changed.
+ And the area position and size are included with name `kKeyDrawingRect`.
- `FlushDraw(json_object *object)`
args: { 'kKeyDrawingName': 'application name' }