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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.
#define _USE_MATH_DEFINES // For VC++ to get M_PI. This has to be first.
#include "chrome/browser/download/download_shelf.h"
#include <cmath>
#include "base/bind.h"
#include "base/callback.h"
#include "base/location.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/string_number_conversions.h"
#include "base/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "chrome/browser/download/download_item_model.h"
#include "chrome/browser/download/download_service.h"
#include "chrome/browser/download/download_service_factory.h"
#include "chrome/browser/download/download_started_animation.h"
#include "chrome/browser/platform_util.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/themes/theme_properties.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/grit/locale_settings.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/download_item.h"
#include "content/public/browser/download_manager.h"
#include "content/public/browser/web_contents.h"
#include "grit/theme_resources.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "third_party/skia/include/core/SkPath.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/theme_provider.h"
#include "ui/gfx/animation/animation.h"
#include "ui/gfx/canvas.h"
using content::DownloadItem;
namespace {
// Delay before we show a transient download.
const int64_t kDownloadShowDelayInSeconds = 2;
// Get the opacity based on |animation_progress|, with values in [0.0, 1.0].
// Range of return value is [0, 255].
int GetOpacity(double animation_progress) {
DCHECK(animation_progress >= 0 && animation_progress <= 1);
// How many times to cycle the complete animation. This should be an odd
// number so that the animation ends faded out.
static const int kCompleteAnimationCycles = 5;
double temp = animation_progress * kCompleteAnimationCycles * M_PI + M_PI_2;
temp = sin(temp) / 2 + 0.5;
return static_cast<int>(255.0 * temp);
}
} // namespace
DownloadShelf::DownloadShelf()
: should_show_on_unhide_(false),
is_hidden_(false),
weak_ptr_factory_(this) {
}
DownloadShelf::~DownloadShelf() {}
// Download progress painting --------------------------------------------------
// static
void DownloadShelf::PaintDownloadProgress(
gfx::Canvas* canvas,
const ui::ThemeProvider& theme_provider,
const base::TimeDelta& progress_time,
int percent_done) {
// Draw background (light blue circle).
SkPaint bg_paint;
bg_paint.setStyle(SkPaint::kFill_Style);
SkColor indicator_color =
theme_provider.GetColor(ThemeProperties::COLOR_TAB_THROBBER_SPINNING);
bg_paint.setColor(SkColorSetA(indicator_color, 0x33));
bg_paint.setAntiAlias(true);
const SkScalar kCenterPoint = kProgressIndicatorSize / 2.f;
SkPath bg;
bg.addCircle(kCenterPoint, kCenterPoint, kCenterPoint);
canvas->DrawPath(bg, bg_paint);
// Calculate progress.
SkScalar sweep_angle = 0.f;
// Start at 12 o'clock.
SkScalar start_pos = SkIntToScalar(270);
if (percent_done < 0) {
// For unknown size downloads, draw a 50 degree sweep that moves at
// 0.08 degrees per millisecond.
sweep_angle = 50.f;
start_pos += static_cast<SkScalar>(progress_time.InMilliseconds() * 0.08);
} else if (percent_done > 0) {
sweep_angle = static_cast<SkScalar>(360 * percent_done / 100.0);
}
// Draw progress.
SkPath progress;
progress.addArc(
SkRect::MakeLTRB(0, 0, kProgressIndicatorSize, kProgressIndicatorSize),
start_pos, sweep_angle);
SkPaint progress_paint;
progress_paint.setColor(indicator_color);
progress_paint.setStyle(SkPaint::kStroke_Style);
progress_paint.setStrokeWidth(1.7f);
progress_paint.setAntiAlias(true);
canvas->DrawPath(progress, progress_paint);
}
// static
void DownloadShelf::PaintDownloadComplete(
gfx::Canvas* canvas,
const ui::ThemeProvider& theme_provider,
double animation_progress) {
// Start at full opacity, then loop back and forth five times before ending
// at zero opacity.
canvas->SaveLayerAlpha(GetOpacity(animation_progress));
PaintDownloadProgress(canvas, theme_provider, base::TimeDelta(), 100);
canvas->Restore();
}
// static
void DownloadShelf::PaintDownloadInterrupted(
gfx::Canvas* canvas,
const ui::ThemeProvider& theme_provider,
double animation_progress) {
// Start at zero opacity, then loop back and forth five times before ending
// at full opacity.
PaintDownloadComplete(canvas, theme_provider, 1.0 - animation_progress);
}
void DownloadShelf::AddDownload(DownloadItem* download) {
DCHECK(download);
if (DownloadItemModel(download).ShouldRemoveFromShelfWhenComplete()) {
// If we are going to remove the download from the shelf upon completion,
// wait a few seconds to see if it completes quickly. If it's a small
// download, then the user won't have time to interact with it.
base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
FROM_HERE,
base::Bind(&DownloadShelf::ShowDownloadById,
weak_ptr_factory_.GetWeakPtr(), download->GetId()),
GetTransientDownloadShowDelay());
} else {
ShowDownload(download);
}
}
void DownloadShelf::Show() {
if (is_hidden_) {
should_show_on_unhide_ = true;
return;
}
DoShow();
}
void DownloadShelf::Close(CloseReason reason) {
if (is_hidden_) {
should_show_on_unhide_ = false;
return;
}
DoClose(reason);
}
void DownloadShelf::Hide() {
if (is_hidden_)
return;
is_hidden_ = true;
if (IsShowing()) {
should_show_on_unhide_ = true;
DoClose(AUTOMATIC);
}
}
void DownloadShelf::Unhide() {
if (!is_hidden_)
return;
is_hidden_ = false;
if (should_show_on_unhide_) {
should_show_on_unhide_ = false;
DoShow();
}
}
base::TimeDelta DownloadShelf::GetTransientDownloadShowDelay() {
return base::TimeDelta::FromSeconds(kDownloadShowDelayInSeconds);
}
content::DownloadManager* DownloadShelf::GetDownloadManager() {
return content::BrowserContext::GetDownloadManager(browser()->profile());
}
void DownloadShelf::ShowDownload(DownloadItem* download) {
if (download->GetState() == DownloadItem::COMPLETE &&
DownloadItemModel(download).ShouldRemoveFromShelfWhenComplete())
return;
if (!DownloadServiceFactory::GetForBrowserContext(
download->GetBrowserContext())->IsShelfEnabled())
return;
if (is_hidden_)
Unhide();
Show();
DoAddDownload(download);
// browser() can be NULL for tests.
if (!browser())
return;
// Show the download started animation if:
// - Download started animation is enabled for this download. It is disabled
// for "Save As" downloads and extension installs, for example.
// - The browser has an active visible WebContents. (browser isn't minimized,
// or running under a test etc.)
// - Rich animations are enabled.
content::WebContents* shelf_tab =
browser()->tab_strip_model()->GetActiveWebContents();
if (DownloadItemModel(download).ShouldShowDownloadStartedAnimation() &&
shelf_tab &&
platform_util::IsVisible(shelf_tab->GetNativeView()) &&
gfx::Animation::ShouldRenderRichAnimation()) {
DownloadStartedAnimation::Show(shelf_tab);
}
}
void DownloadShelf::ShowDownloadById(int32_t download_id) {
content::DownloadManager* download_manager = GetDownloadManager();
if (!download_manager)
return;
DownloadItem* download = download_manager->GetDownload(download_id);
if (!download)
return;
ShowDownload(download);
}
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