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// Copyright (c) 2012 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 "ui/views/controls/throbber.h"
#include "base/bind.h"
#include "base/location.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/animation/tween.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/paint_throbber.h"
#include "ui/gfx/paint_vector_icon.h"
#include "ui/gfx/vector_icons_public.h"
#include "ui/native_theme/common_theme.h"
#include "ui/native_theme/native_theme.h"
#include "ui/resources/grit/ui_resources.h"
#include "ui/views/resources/grit/views_resources.h"
namespace views {
// The default diameter of a Throbber. If you change this, also change
// kCheckmarkDipSize.
static const int kDefaultDiameter = 16;
// The size of the checkmark, in DIP. This magic number matches the default
// diamater plus padding inherent in the checkmark SVG.
static const int kCheckmarkDipSize = 18;
Throbber::Throbber() : checked_(false) {
}
Throbber::~Throbber() {
Stop();
}
void Throbber::Start() {
if (IsRunning())
return;
start_time_ = base::TimeTicks::Now();
const int kFrameTimeMs = 30;
timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(kFrameTimeMs),
base::Bind(&Throbber::SchedulePaint, base::Unretained(this)));
SchedulePaint(); // paint right away
}
void Throbber::Stop() {
if (!IsRunning())
return;
timer_.Stop();
SchedulePaint();
}
void Throbber::SetChecked(bool checked) {
if (checked == checked_)
return;
checked_ = checked;
SchedulePaint();
}
gfx::Size Throbber::GetPreferredSize() const {
return gfx::Size(kDefaultDiameter, kDefaultDiameter);
}
void Throbber::OnPaint(gfx::Canvas* canvas) {
SkColor color = GetNativeTheme()->GetSystemColor(
ui::NativeTheme::kColorId_ThrobberSpinningColor);
if (!IsRunning()) {
if (checked_) {
canvas->Translate(gfx::Vector2d((width() - kCheckmarkDipSize) / 2,
(height() - kCheckmarkDipSize) / 2));
gfx::PaintVectorIcon(canvas, gfx::VectorIconId::CHECK_CIRCLE,
kCheckmarkDipSize, color);
}
return;
}
base::TimeDelta elapsed_time = base::TimeTicks::Now() - start_time_;
gfx::PaintThrobberSpinning(canvas, GetContentsBounds(), color, elapsed_time);
}
bool Throbber::IsRunning() const {
return timer_.IsRunning();
}
// Smoothed throbber ---------------------------------------------------------
// Delay after work starts before starting throbber, in milliseconds.
static const int kStartDelay = 200;
// Delay after work stops before stopping, in milliseconds.
static const int kStopDelay = 50;
SmoothedThrobber::SmoothedThrobber()
: start_delay_ms_(kStartDelay), stop_delay_ms_(kStopDelay) {
}
SmoothedThrobber::~SmoothedThrobber() {}
void SmoothedThrobber::Start() {
stop_timer_.Stop();
if (!IsRunning() && !start_timer_.IsRunning()) {
start_timer_.Start(FROM_HERE,
base::TimeDelta::FromMilliseconds(start_delay_ms_), this,
&SmoothedThrobber::StartDelayOver);
}
}
void SmoothedThrobber::StartDelayOver() {
Throbber::Start();
}
void SmoothedThrobber::Stop() {
if (!IsRunning())
start_timer_.Stop();
stop_timer_.Stop();
stop_timer_.Start(FROM_HERE,
base::TimeDelta::FromMilliseconds(stop_delay_ms_), this,
&SmoothedThrobber::StopDelayOver);
}
void SmoothedThrobber::StopDelayOver() {
Throbber::Stop();
}
} // namespace views
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