blob: 8989b152bec883172ddde8e5e42d27b8ff3f5afc [file] [log] [blame]
// Copyright 2017 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 <cmath>
#include <vector>
#include "ash/login/ui/animation_frame.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/views/view.h"
namespace ash {
// A custom image view with rounded edges.
class AnimatedRoundedImageView : public views::View {
enum class Playback {
kFirstFrameOnly, // Only the first frame in the animation will be shown.
kSingle, // Play the animation only once.
kRepeat, // Play the animation repeatedly.
// Provides animation frames.
class AnimationDecoder {
virtual ~AnimationDecoder();
virtual AnimationFrames Decode(float image_scale) = 0;
// Constructs a new rounded image view with rounded corners of radius
// |corner_radius|.
AnimatedRoundedImageView(const gfx::Size& size, int corner_radius);
~AnimatedRoundedImageView() override;
// Show an animation with specified playback mode.
void SetAnimationDecoder(std::unique_ptr<AnimationDecoder> decoder,
Playback playback);
// Show a static image.
void SetImage(const gfx::ImageSkia& image);
// Set playback type of the animation.
void SetAnimationPlayback(Playback playback);
// views::View:
gfx::Size CalculatePreferredSize() const override;
void OnPaint(gfx::Canvas* canvas) override;
void StartOrStopAnimation();
void UpdateAnimationFrame();
void BuildAnimationFrames(float image_scale);
// Currently displayed animation frame.
int active_frame_ = 0;
// Used to fetch animation frames for a given scale.
std::unique_ptr<AnimationDecoder> decoder_;
// The scale that |frames_| is using.
float frames_scale_ = NAN;
// The raw decoded animation frames.
AnimationFrames frames_;
// Animation playback type.
Playback playback_ = Playback::kFirstFrameOnly;
const gfx::Size image_size_;
const int corner_radius_;
base::OneShotTimer update_frame_timer_;
} // namespace ash