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// Copyright (c) 2009 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 "chrome/browser/extensions/extension_shelf.h"
#include "base/logging.h"
#include "chrome/browser/browser.h"
#include "chrome/browser/extensions/extension.h"
#include "chrome/browser/extensions/extension_process_manager.h"
#include "chrome/browser/extensions/extension_view.h"
#include "chrome/browser/extensions/extensions_service.h"
#include "chrome/browser/profile.h"
#include "chrome/common/notification_service.h"
#include "skia/ext/skia_utils.h"
namespace {
// Margins around the content.
static const int kTopMargin = 2;
static const int kBottomMargin = 2;
static const int kLeftMargin = 0;
static const int kRightMargin = 0;
// Padding on left and right side of an extension toolstrip.
static const int kToolstripPadding = 2;
// Width of the toolstrip divider.
static const int kToolstripDividerWidth = 2;
// Preferred height of the ExtensionShelf.
static const int kShelfHeight = 29;
// Colors for the ExtensionShelf.
static const SkColor kBackgroundColor = SkColorSetRGB(230, 237, 244);
static const SkColor kBorderColor = SkColorSetRGB(201, 212, 225);
static const SkColor kDividerHighlightColor = SkColorSetRGB(247, 250, 253);
// TODO(erikkay) convert back to a gradient when Glen figures out the
// specs.
// static const SkColor kBackgroundColor = SkColorSetRGB(237, 244, 252);
// static const SkColor kTopGradientColor = SkColorSetRGB(222, 234, 248);
} // namespace
ExtensionShelf::ExtensionShelf(Browser* browser) : browser_(browser) {
// Watch extensions loaded notification.
NotificationService* ns = NotificationService::current();
Source<Profile> ns_source(browser->profile()->GetOriginalProfile());
ns->AddObserver(this, NotificationType::EXTENSIONS_LOADED,
NotificationService::AllSources());
// Add any already-loaded extensions now, since we missed the notification for
// those.
ExtensionsService* service = browser_->profile()->GetExtensionsService();
if (service) { // This can be null in unit tests.
if (AddExtensionViews(service->extensions())) {
Layout();
SchedulePaint();
}
}
}
ExtensionShelf::~ExtensionShelf() {
NotificationService* ns = NotificationService::current();
ns->RemoveObserver(this, NotificationType::EXTENSIONS_LOADED,
NotificationService::AllSources());
}
void ExtensionShelf::Paint(ChromeCanvas* canvas) {
#if 0
// TODO(erikkay) re-enable this when Glen has the gradient values worked out.
SkPaint paint;
paint.setShader(skia::CreateGradientShader(0,
height(),
kTopGradientColor,
kBackgroundColor))->safeUnref();
canvas->FillRectInt(0, 0, width(), height(), paint);
#else
canvas->FillRectInt(kBackgroundColor, 0, 0, width(), height());
#endif
canvas->FillRectInt(kBorderColor, 0, 0, width(), 1);
canvas->FillRectInt(kBorderColor, 0, height() - 1, width(), 1);
int count = GetChildViewCount();
for (int i = 0; i < count; ++i) {
int right = GetChildViewAt(i)->bounds().right() + kToolstripPadding;
int h = height() - 2;
canvas->FillRectInt(kBorderColor, right, 1, 1, h);
canvas->FillRectInt(kDividerHighlightColor, right + 1, 1, 1, h);
}
SkRect background_rect = {
SkIntToScalar(0),
SkIntToScalar(1),
SkIntToScalar(1),
SkIntToScalar(height() - 2)};
InitBackground(canvas, background_rect);
}
gfx::Size ExtensionShelf::GetPreferredSize() {
if (HasExtensionViews())
return gfx::Size(0, kShelfHeight);
return gfx::Size(0, 0);
}
void ExtensionShelf::ChildPreferredSizeChanged(View* child) {
Layout();
}
void ExtensionShelf::Layout() {
if (!GetParent())
return;
int x = kLeftMargin;
int y = kTopMargin;
int content_height = height() - kTopMargin - kBottomMargin;
int max_x = width() - kRightMargin;
int count = GetChildViewCount();
for (int i = 0; i < count; ++i) {
x += kToolstripPadding; // left padding
views::View* child = GetChildViewAt(i);
gfx::Size pref = child->GetPreferredSize();
int next_x = x + pref.width() + kToolstripPadding; // right padding
child->SetVisible(next_x < max_x);
child->SetBounds(x, y, pref.width(), content_height);
child->Layout();
x = next_x + kToolstripDividerWidth;
}
SchedulePaint();
}
void ExtensionShelf::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
switch (type.value) {
case NotificationType::EXTENSIONS_LOADED: {
const ExtensionList* extensions = Details<ExtensionList>(details).ptr();
AddExtensionViews(extensions);
break;
}
default:
DCHECK(false) << "Unhandled notification of type: " << type.value;
break;
}
}
bool ExtensionShelf::AddExtensionViews(const ExtensionList* extensions) {
bool had_views = HasExtensionViews();
bool added_toolstrip = false;
ExtensionProcessManager* manager =
browser_->profile()->GetExtensionProcessManager();
for (ExtensionList::const_iterator extension = extensions->begin();
extension != extensions->end(); ++extension) {
for (std::vector<std::string>::const_iterator toolstrip_path =
(*extension)->toolstrips().begin();
toolstrip_path != (*extension)->toolstrips().end(); ++toolstrip_path) {
ExtensionView* toolstrip =
manager->CreateView(*extension,
(*extension)->GetResourceURL(*toolstrip_path),
browser_);
if (!background_.empty())
toolstrip->SetBackground(background_);
AddChildView(toolstrip);
added_toolstrip = true;
}
}
if (added_toolstrip) {
SchedulePaint();
if (!had_views)
PreferredSizeChanged();
}
return added_toolstrip;
}
bool ExtensionShelf::HasExtensionViews() {
return GetChildViewCount() > 0;
}
void ExtensionShelf::InitBackground(ChromeCanvas* canvas,
const SkRect& subset) {
if (!background_.empty())
return;
const SkBitmap& background = canvas->getDevice()->accessBitmap(false);
// Extract the correct subset of the toolstrip background into a bitmap. We
// must use a temporary here because extractSubset() returns a bitmap that
// references pixels in the original one and we want to actually make a copy
// that will have a long lifetime.
SkBitmap temp;
temp.setConfig(background.config(),
static_cast<int>(subset.width()),
static_cast<int>(subset.height()));
SkRect mapped_subset = subset;
bool result = canvas->getTotalMatrix().mapRect(&mapped_subset);
DCHECK(result);
SkIRect isubset;
mapped_subset.round(&isubset);
result = background.extractSubset(&temp, isubset);
if (!result)
return;
temp.copyTo(&background_, temp.config());
DCHECK(background_.readyToDraw());
// Tell all extension views about the new background
int count = GetChildViewCount();
for (int i = 0; i < count; ++i)
static_cast<ExtensionView*>(GetChildViewAt(i))->SetBackground(background_);
}
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