X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=src%2Fash%2Ftouch%2Ftouch_transformer_controller.h;h=b210c04fba7c09953fdfc77f38610de00870f138;hb=1afa4dd80ef85af7c90efaea6959db1d92330844;hp=8512186603d757b0bb8d096596e469130f0f9077;hpb=90762837333c13ccf56f2ad88e4481fc71e8d281;p=platform%2Fframework%2Fweb%2Fcrosswalk.git

diff --git a/src/ash/touch/touch_transformer_controller.h b/src/ash/touch/touch_transformer_controller.h
index 8512186..b210c04 100644
--- a/src/ash/touch/touch_transformer_controller.h
+++ b/src/ash/touch/touch_transformer_controller.h
@@ -9,6 +9,10 @@
 #include "ash/display/display_controller.h"
 #include "ui/gfx/transform.h"
 
+namespace ui {
+struct TouchscreenDevice;
+}  // namespace ui
+
 namespace ash {
 
 // TouchTransformerController listens to display configuration change
@@ -24,8 +28,8 @@ class ASH_EXPORT TouchTransformerController
   void UpdateTouchTransformer() const;
 
   // DisplayController::Observer:
-  virtual void OnDisplaysInitialized() OVERRIDE;
-  virtual void OnDisplayConfigurationChanged() OVERRIDE;
+  virtual void OnDisplaysInitialized() override;
+  virtual void OnDisplayConfigurationChanged() override;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(TouchTransformerControllerTest,
@@ -37,19 +41,26 @@ class ASH_EXPORT TouchTransformerController
   FRIEND_TEST_ALL_PREFIXES(TouchTransformerControllerTest,
                            TouchRadiusScale);
 
-  bool ShouldComputeMirrorModeTouchTransformer(
-      const DisplayInfo& touch_display) const ;
-
-  gfx::Transform GetMirrorModeTouchTransformer(
-      const DisplayInfo& touch_display) const;
-
-  gfx::Transform GetExtendedModeTouchTransformer(
-      const DisplayInfo& touch_display, const gfx::Size& fb_size) const;
-
-  double GetTouchResolutionScale(const DisplayInfo& touch_display) const;
+  // Returns a transform that will be used to change an event's location from
+  // the touchscreen's coordinate system into the display's coordinate system.
+  // The transform is also responsible for properly scaling the display if the
+  // display support panel fitting.
+  //
+  // On X11 events are reported in framebuffer coordinate space, so the
+  // |framebuffer_size| is used for scaling.
+  // On Ozone events are reported in the touchscreen's resolution, so
+  // |touchscreen| is used to determine the size and scale the event.
+  gfx::Transform GetTouchTransform(
+      const DisplayInfo& display,
+      const ui::TouchscreenDevice& touchscreen,
+      const gfx::Size& framebuffer_size) const;
 
-  // For unittests only.
-  bool force_compute_mirror_mode_touch_transformer_;
+  // Returns the scaling factor for the touch radius such that it scales the
+  // radius from |touch_device|'s coordiante system to the |touch_display|'s
+  // coordinate system.
+  double GetTouchResolutionScale(
+      const DisplayInfo& touch_display,
+      const ui::TouchscreenDevice& touch_device) const;
 
   DISALLOW_COPY_AND_ASSIGN(TouchTransformerController);
 };