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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "mojo/examples/sample_app/gles2_client_impl.h"
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <math.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()) {
service_.SetPeer(this);
}
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);
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_.UpdateForTimeDelta(offset.InSecondsF());
cube_.Draw();
MojoGLES2SwapBuffers();
}
void GLES2ClientImpl::StartTimer() {
last_time_ = base::Time::Now();
timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(16),
this, &GLES2ClientImpl::Draw);
}
} // namespace examples
} // namespace mojo
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