blob: 4966f59a113ee1e3699f8a392bfb9aef082138aa [file] [log] [blame]
// Copyright 2017 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#if defined(countof)
// Workaround for compiler error due to Zircon defining countof() as a macro.
// Redefines countof() using GLM_COUNTOF(), which currently provides a more
// sophisticated implementation anyway.
#undef countof
#include <glm/glm.hpp>
#define countof(X) GLM_COUNTOF(X)
// No workaround required.
#include <glm/glm.hpp>
#include <glm/ext.hpp>
#include <fuchsia/ui/input/cpp/fidl.h>
#include "garnet/lib/ui/scenic/util/rk4_spring_simulation.h"
#include "lib/fxl/macros.h"
#include "lib/ui/scenic/cpp/resources.h"
namespace root_presenter {
class Presentation;
// This class plugs in "Display flip" behavior to the Presenter; i.e. the
// display gets flipped when a particular key (volume down) is pressed.
class DisplayRotater {
// Modifies |scene| if a volume down key press is detected by rotating it
// 180 degrees.
// |Presentation| is the root presenter.
// Returns true if the scene should be invalidated.
bool OnEvent(const fuchsia::ui::input::InputEvent& event,
Presentation* presentation);
void SetDisplayRotation(Presentation* p, float display_rotation_degrees,
bool animate);
// Returns true if an animation update happened and the scene is to be
// invalidated.
bool UpdateAnimation(Presentation* presenter, uint64_t presentation_time);
// Returns the raw pointer coordinates transformed by the current display
// rotation.
glm::vec2 RotatePointerCoordinates(Presentation* p, float x, float y);
void FlipDisplay(Presentation* presentation);
// Presentation time at which animation values were last set.
uint64_t last_animation_update_time_ = 0;
scenic_impl::RK4SpringSimulation spring_;
} // namespace root_presenter