1 files changed, 56 insertions, 6 deletions
diff --git a/mojo/examples/sample_app/gles2_client_impl.cc b/mojo/examples/sample_app/gles2_client_impl.cc
index 2a87ca0..ea89cb7 100644
--- a/mojo/examples/sample_app/gles2_client_impl.cc
+++ b/mojo/examples/sample_app/gles2_client_impl.cc
@@ -8,9 +8,17 @@
 #include <GLES2/gl2ext.h>
 
 #include "mojo/public/gles2/gles2.h"
+#include "ui/events/event_constants.h"
 
 namespace mojo {
 namespace examples {
+namespace {
+
+float CalculateDragDistance(const gfx::PointF& start, const Point& end) {
+  return hypot(start.x() - end.x(), start.y() - end.y());
+}
+
+}
 
 GLES2ClientImpl::GLES2ClientImpl(ScopedMessagePipeHandle pipe)
     : service_(pipe.Pass()) {
@@ -21,29 +29,71 @@ GLES2ClientImpl::~GLES2ClientImpl() {
   service_->Destroy();
 }
 
+void GLES2ClientImpl::HandleInputEvent(const Event& event) {
+  switch (event.action()) {
+  case ui::ET_MOUSE_PRESSED:
+  case ui::ET_TOUCH_PRESSED:
+    timer_.Stop();
+    capture_point_.SetPoint(event.location().x(), event.location().y());
+    last_drag_point_ = capture_point_;
+    drag_start_time_ = base::Time::Now();
+    break;
+  case ui::ET_MOUSE_DRAGGED:
+  case ui::ET_TOUCH_MOVED:
+    if (!timer_.IsRunning()) {
+      int direction = event.location().y() < last_drag_point_.y() ||
+          event.location().x() > last_drag_point_.x() ? 1 : -1;
+      cube_.set_direction(direction);
+      cube_.UpdateForDragDistance(
+          CalculateDragDistance(last_drag_point_, event.location()));
+      cube_.Draw();
+      MojoGLES2SwapBuffers();
+
+      last_drag_point_.SetPoint(event.location().x(), event.location().y());
+    }
+    break;
+  case ui::ET_MOUSE_RELEASED:
+  case ui::ET_TOUCH_RELEASED: {
+      cube_.SetFlingMultiplier(
+          CalculateDragDistance(capture_point_, event.location()),
+          base::TimeDelta(base::Time::Now() - drag_start_time_).InSecondsF());
+
+      capture_point_ = last_drag_point_ = gfx::PointF();
+      StartTimer();
+    }
+    break;
+  default:
+    break;
+  }
+}
+
 void GLES2ClientImpl::DidCreateContext(uint64_t encoded,
                                        uint32_t width,
                                        uint32_t height) {
   MojoGLES2MakeCurrent(encoded);
 
   cube_.Init(width, height);
-  last_time_ = base::Time::Now();
-  timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(16),
-               this, &GLES2ClientImpl::Draw);
+  StartTimer();
+}
+
+void GLES2ClientImpl::ContextLost() {
+  timer_.Stop();
 }
 
 void GLES2ClientImpl::Draw() {
   base::Time now = base::Time::Now();
   base::TimeDelta offset = now - last_time_;
   last_time_ = now;
-  cube_.Update(offset.InSecondsF());
+  cube_.UpdateForTimeDelta(offset.InSecondsF());
   cube_.Draw();
 
   MojoGLES2SwapBuffers();
 }
 
-void GLES2ClientImpl::ContextLost() {
-  timer_.Stop();
+void GLES2ClientImpl::StartTimer() {
+  last_time_ = base::Time::Now();
+  timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(16),
+               this, &GLES2ClientImpl::Draw);
 }
 
 }  // namespace examples