// 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/message_center/views/notification_view.h"
#include "base/command_line.h"
#include "base/stl_util.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "ui/base/cursor/cursor.h"
#include "ui/base/layout.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/size.h"
#include "ui/gfx/skia_util.h"
#include "ui/gfx/text_elider.h"
#include "ui/message_center/message_center.h"
#include "ui/message_center/message_center_style.h"
#include "ui/message_center/notification.h"
#include "ui/message_center/notification_types.h"
#include "ui/message_center/views/bounded_label.h"
#include "ui/message_center/views/constants.h"
#include "ui/message_center/views/message_center_controller.h"
#include "ui/message_center/views/notification_button.h"
#include "ui/message_center/views/padded_button.h"
#include "ui/message_center/views/proportional_image_view.h"
#include "ui/native_theme/native_theme.h"
#include "ui/resources/grit/ui_resources.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/background.h"
#include "ui/views/border.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/controls/label.h"
#include "ui/views/controls/progress_bar.h"
#include "ui/views/layout/box_layout.h"
#include "ui/views/layout/fill_layout.h"
#include "ui/views/native_cursor.h"
#include "ui/views/painter.h"
#include "ui/views/view_targeter.h"
#include "ui/views/widget/widget.h"
namespace {
// Dimensions.
const int kProgressBarWidth = message_center::kNotificationWidth -
message_center::kTextLeftPadding - message_center::kTextRightPadding;
const int kProgressBarBottomPadding = 0;
// static
scoped_ptr<views::Border> MakeEmptyBorder(int top,
int left,
int bottom,
int right) {
return views::Border::CreateEmptyBorder(top, left, bottom, right);
}
// static
scoped_ptr<views::Border> MakeTextBorder(int padding, int top, int bottom) {
// Split the padding between the top and the bottom, then add the extra space.
return MakeEmptyBorder(padding / 2 + top,
message_center::kTextLeftPadding,
(padding + 1) / 2 + bottom,
message_center::kTextRightPadding);
}
// static
scoped_ptr<views::Border> MakeProgressBarBorder(int top, int bottom) {
return MakeEmptyBorder(top,
message_center::kTextLeftPadding,
bottom,
message_center::kTextRightPadding);
}
// static
scoped_ptr<views::Border> MakeSeparatorBorder(int top,
int left,
SkColor color) {
return views::Border::CreateSolidSidedBorder(top, left, 0, 0, color);
}
// static
// Return true if and only if the image is null or has alpha.
bool HasAlpha(gfx::ImageSkia& image, views::Widget* widget) {
// Determine which bitmap to use.
float factor = 1.0f;
if (widget)
factor = ui::GetScaleFactorForNativeView(widget->GetNativeView());
// Extract that bitmap's alpha and look for a non-opaque pixel there.
SkBitmap bitmap = image.GetRepresentation(factor).sk_bitmap();
if (!bitmap.isNull()) {
SkBitmap alpha;
bitmap.extractAlpha(&alpha);
for (int y = 0; y < bitmap.height(); ++y) {
for (int x = 0; x < bitmap.width(); ++x) {
if (alpha.getColor(x, y) != SK_ColorBLACK) {
return true;
}
}
}
}
// If no opaque pixel was found, return false unless the bitmap is empty.
return bitmap.isNull();
}
// ItemView ////////////////////////////////////////////////////////////////////
// ItemViews are responsible for drawing each list notification item's title and
// message next to each other within a single column.
class ItemView : public views::View {
public:
ItemView(const message_center::NotificationItem& item);
virtual ~ItemView();
// Overridden from views::View:
virtual void SetVisible(bool visible) OVERRIDE;
private:
DISALLOW_COPY_AND_ASSIGN(ItemView);
};
ItemView::ItemView(const message_center::NotificationItem& item) {
SetLayoutManager(new views::BoxLayout(views::BoxLayout::kHorizontal,
0, 0, message_center::kItemTitleToMessagePadding));
views::Label* title = new views::Label(item.title);
title->set_collapse_when_hidden(true);
title->SetHorizontalAlignment(gfx::ALIGN_LEFT);
title->SetEnabledColor(message_center::kRegularTextColor);
title->SetBackgroundColor(message_center::kRegularTextBackgroundColor);
AddChildView(title);
views::Label* message = new views::Label(item.message);
message->set_collapse_when_hidden(true);
message->SetHorizontalAlignment(gfx::ALIGN_LEFT);
message->SetEnabledColor(message_center::kDimTextColor);
message->SetBackgroundColor(message_center::kDimTextBackgroundColor);
AddChildView(message);
PreferredSizeChanged();
SchedulePaint();
}
ItemView::~ItemView() {
}
void ItemView::SetVisible(bool visible) {
views::View::SetVisible(visible);
for (int i = 0; i < child_count(); ++i)
child_at(i)->SetVisible(visible);
}
// The NotificationImage is the view representing the area covered by the
// notification's image, including background and border. Its size can be
// specified in advance and images will be scaled to fit including a border if
// necessary.
// static
views::View* MakeNotificationImage(const gfx::Image& image, gfx::Size size) {
views::View* container = new views::View();
container->SetLayoutManager(new views::FillLayout());
container->set_background(views::Background::CreateSolidBackground(
message_center::kImageBackgroundColor));
gfx::Size ideal_size(
message_center::kNotificationPreferredImageWidth,
message_center::kNotificationPreferredImageHeight);
gfx::Size scaled_size =
message_center::GetImageSizeForContainerSize(ideal_size, image.Size());
views::View* proportional_image_view =
new message_center::ProportionalImageView(image.AsImageSkia(),
ideal_size);
// This calculation determines that the new image would have the correct
// height for width.
if (ideal_size != scaled_size) {
proportional_image_view->SetBorder(views::Border::CreateSolidBorder(
message_center::kNotificationImageBorderSize, SK_ColorTRANSPARENT));
}
container->AddChildView(proportional_image_view);
return container;
}
// NotificationProgressBar /////////////////////////////////////////////////////
class NotificationProgressBar : public views::ProgressBar {
public:
NotificationProgressBar();
virtual ~NotificationProgressBar();
private:
// Overriden from View
virtual gfx::Size GetPreferredSize() const OVERRIDE;
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
DISALLOW_COPY_AND_ASSIGN(NotificationProgressBar);
};
NotificationProgressBar::NotificationProgressBar() {
}
NotificationProgressBar::~NotificationProgressBar() {
}
gfx::Size NotificationProgressBar::GetPreferredSize() const {
gfx::Size pref_size(kProgressBarWidth, message_center::kProgressBarThickness);
gfx::Insets insets = GetInsets();
pref_size.Enlarge(insets.width(), insets.height());
return pref_size;
}
void NotificationProgressBar::OnPaint(gfx::Canvas* canvas) {
gfx::Rect content_bounds = GetContentsBounds();
// Draw background.
SkPath background_path;
background_path.addRoundRect(gfx::RectToSkRect(content_bounds),
message_center::kProgressBarCornerRadius,
message_center::kProgressBarCornerRadius);
SkPaint background_paint;
background_paint.setStyle(SkPaint::kFill_Style);
background_paint.setFlags(SkPaint::kAntiAlias_Flag);
background_paint.setColor(message_center::kProgressBarBackgroundColor);
canvas->DrawPath(background_path, background_paint);
// Draw slice.
const int slice_width =
static_cast<int>(content_bounds.width() * GetNormalizedValue() + 0.5);
if (slice_width < 1)
return;
gfx::Rect slice_bounds = content_bounds;
slice_bounds.set_width(slice_width);
SkPath slice_path;
slice_path.addRoundRect(gfx::RectToSkRect(slice_bounds),
message_center::kProgressBarCornerRadius,
message_center::kProgressBarCornerRadius);
SkPaint slice_paint;
slice_paint.setStyle(SkPaint::kFill_Style);
slice_paint.setFlags(SkPaint::kAntiAlias_Flag);
slice_paint.setColor(message_center::kProgressBarSliceColor);
canvas->DrawPath(slice_path, slice_paint);
}
} // namespace
namespace message_center {
// NotificationView ////////////////////////////////////////////////////////////
// static
NotificationView* NotificationView::Create(MessageCenterController* controller,
const Notification& notification,
bool top_level) {
switch (notification.type()) {
case NOTIFICATION_TYPE_BASE_FORMAT:
case NOTIFICATION_TYPE_IMAGE:
case NOTIFICATION_TYPE_MULTIPLE:
case NOTIFICATION_TYPE_SIMPLE:
case NOTIFICATION_TYPE_PROGRESS:
break;
default:
// If the caller asks for an unrecognized kind of view (entirely possible
// if an application is running on an older version of this code that
// doesn't have the requested kind of notification template), we'll fall
// back to a notification instance that will provide at least basic
// functionality.
LOG(WARNING) << "Unable to fulfill request for unrecognized "
<< "notification type " << notification.type() << ". "
<< "Falling back to simple notification type.";
}
// Currently all roads lead to the generic NotificationView.
NotificationView* notification_view =
new NotificationView(controller, notification);
#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
// Don't create shadows for notification toasts on linux wih aura.
if (top_level)
return notification_view;
#endif
notification_view->CreateShadowBorder();
return notification_view;
}
views::View* NotificationView::TargetForRect(views::View* root,
const gfx::Rect& rect) {
CHECK_EQ(root, this);
// TODO(tdanderson): Modify this function to support rect-based event
// targeting. Using the center point of |rect| preserves this function's
// expected behavior for the time being.
gfx::Point point = rect.CenterPoint();
// Want to return this for underlying views, otherwise GetCursor is not
// called. But buttons are exceptions, they'll have their own event handlings.
std::vector<views::View*> buttons(action_buttons_.begin(),
action_buttons_.end());
buttons.push_back(close_button());
for (size_t i = 0; i < buttons.size(); ++i) {
gfx::Point point_in_child = point;
ConvertPointToTarget(this, buttons[i], &point_in_child);
if (buttons[i]->HitTestPoint(point_in_child))
return buttons[i]->GetEventHandlerForPoint(point_in_child);
}
return root;
}
void NotificationView::CreateOrUpdateViews(const Notification& notification) {
CreateOrUpdateTitleView(notification);
CreateOrUpdateMessageView(notification);
CreateOrUpdateContextMessageView(notification);
CreateOrUpdateProgressBarView(notification);
CreateOrUpdateListItemViews(notification);
CreateOrUpdateIconView(notification);
CreateOrUpdateImageView(notification);
CreateOrUpdateActionButtonViews(notification);
}
void NotificationView::SetAccessibleName(const Notification& notification) {
std::vector<base::string16> accessible_lines;
accessible_lines.push_back(notification.title());
accessible_lines.push_back(notification.message());
accessible_lines.push_back(notification.context_message());
std::vector<NotificationItem> items = notification.items();
for (size_t i = 0; i < items.size() && i < kNotificationMaximumItems; ++i) {
accessible_lines.push_back(items[i].title + base::ASCIIToUTF16(" ") +
items[i].message);
}
set_accessible_name(JoinString(accessible_lines, '\n'));
}
NotificationView::NotificationView(MessageCenterController* controller,
const Notification& notification)
: MessageView(this,
notification.id(),
notification.notifier_id(),
notification.small_image().AsImageSkia(),
notification.display_source()),
controller_(controller),
clickable_(notification.clickable()),
top_view_(NULL),
title_view_(NULL),
message_view_(NULL),
context_message_view_(NULL),
icon_view_(NULL),
bottom_view_(NULL),
image_view_(NULL),
progress_bar_view_(NULL) {
// Create the top_view_, which collects into a vertical box all content
// at the top of the notification (to the right of the icon) except for the
// close button.
top_view_ = new views::View();
top_view_->SetLayoutManager(
new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
top_view_->SetBorder(
MakeEmptyBorder(kTextTopPadding - 8, 0, kTextBottomPadding - 5, 0));
AddChildView(top_view_);
// Create the bottom_view_, which collects into a vertical box all content
// below the notification icon.
bottom_view_ = new views::View();
bottom_view_->SetLayoutManager(
new views::BoxLayout(views::BoxLayout::kVertical, 0, 0, 0));
AddChildView(bottom_view_);
CreateOrUpdateViews(notification);
// Put together the different content and control views. Layering those allows
// for proper layout logic and it also allows the close button and small
// image to overlap the content as needed to provide large enough click and
// touch areas (<http://crbug.com/168822> and <http://crbug.com/168856>).
AddChildView(small_image());
AddChildView(close_button());
SetAccessibleName(notification);
SetEventTargeter(
scoped_ptr<views::ViewTargeter>(new views::ViewTargeter(this)));
}
NotificationView::~NotificationView() {
}
gfx::Size NotificationView::GetPreferredSize() const {
int top_width = top_view_->GetPreferredSize().width() +
icon_view_->GetPreferredSize().width();
int bottom_width = bottom_view_->GetPreferredSize().width();
int preferred_width = std::max(top_width, bottom_width) + GetInsets().width();
return gfx::Size(preferred_width, GetHeightForWidth(preferred_width));
}
int NotificationView::GetHeightForWidth(int width) const {
// Get the height assuming no line limit changes.
int content_width = width - GetInsets().width();
int top_height = top_view_->GetHeightForWidth(content_width);
int bottom_height = bottom_view_->GetHeightForWidth(content_width);
// <http://crbug.com/230448> Fix: Adjust the height when the message_view's
// line limit would be different for the specified width than it currently is.
// TODO(dharcourt): Avoid BoxLayout and directly compute the correct height.
if (message_view_) {
int title_lines = 0;
if (title_view_) {
title_lines = title_view_->GetLinesForWidthAndLimit(width,
kMaxTitleLines);
}
int used_limit = message_view_->GetLineLimit();
int correct_limit = GetMessageLineLimit(title_lines, width);
if (used_limit != correct_limit) {
top_height -= GetMessageHeight(content_width, used_limit);
top_height += GetMessageHeight(content_width, correct_limit);
}
}
int content_height = std::max(top_height, kIconSize) + bottom_height;
// Adjust the height to make sure there is at least 16px of space below the
// icon if there is any space there (<http://crbug.com/232966>).
if (content_height > kIconSize)
content_height = std::max(content_height,
kIconSize + message_center::kIconBottomPadding);
return content_height + GetInsets().height();
}
void NotificationView::Layout() {
MessageView::Layout();
gfx::Insets insets = GetInsets();
int content_width = width() - insets.width();
// Before any resizing, set or adjust the number of message lines.
int title_lines = 0;
if (title_view_) {
title_lines =
title_view_->GetLinesForWidthAndLimit(width(), kMaxTitleLines);
}
if (message_view_)
message_view_->SetLineLimit(GetMessageLineLimit(title_lines, width()));
// Top views.
int top_height = top_view_->GetHeightForWidth(content_width);
top_view_->SetBounds(insets.left(), insets.top(), content_width, top_height);
// Icon.
icon_view_->SetBounds(insets.left(), insets.top(), kIconSize, kIconSize);
// Bottom views.
int bottom_y = insets.top() + std::max(top_height, kIconSize);
int bottom_height = bottom_view_->GetHeightForWidth(content_width);
bottom_view_->SetBounds(insets.left(), bottom_y,
content_width, bottom_height);
}
void NotificationView::OnFocus() {
MessageView::OnFocus();
ScrollRectToVisible(GetLocalBounds());
}
void NotificationView::ScrollRectToVisible(const gfx::Rect& rect) {
// Notification want to show the whole notification when a part of it (like
// a button) gets focused.
views::View::ScrollRectToVisible(GetLocalBounds());
}
gfx::NativeCursor NotificationView::GetCursor(const ui::MouseEvent& event) {
if (!clickable_ || !controller_->HasClickedListener(notification_id()))
return views::View::GetCursor(event);
return views::GetNativeHandCursor();
}
void NotificationView::UpdateWithNotification(
const Notification& notification) {
MessageView::UpdateWithNotification(notification);
CreateOrUpdateViews(notification);
SetAccessibleName(notification);
Layout();
SchedulePaint();
}
void NotificationView::ButtonPressed(views::Button* sender,
const ui::Event& event) {
// Certain operations can cause |this| to be destructed, so copy the members
// we send to other parts of the code.
// TODO(dewittj): Remove this hack.
std::string id(notification_id());
// See if the button pressed was an action button.
for (size_t i = 0; i < action_buttons_.size(); ++i) {
if (sender == action_buttons_[i]) {
controller_->ClickOnNotificationButton(id, i);
return;
}
}
// Let the superclass handled anything other than action buttons.
// Warning: This may cause the NotificationView itself to be deleted,
// so don't do anything afterwards.
MessageView::ButtonPressed(sender, event);
}
void NotificationView::ClickOnNotification(const std::string& notification_id) {
controller_->ClickOnNotification(notification_id);
}
void NotificationView::RemoveNotification(const std::string& notification_id,
bool by_user) {
controller_->RemoveNotification(notification_id, by_user);
}
void NotificationView::CreateOrUpdateTitleView(
const Notification& notification) {
if (notification.title().empty()) {
if (title_view_) {
// Deletion will also remove |title_view_| from its parent.
delete title_view_;
title_view_ = NULL;
}
return;
}
DCHECK(top_view_ != NULL);
const gfx::FontList& font_list =
views::Label().font_list().DeriveWithSizeDelta(2);
int title_character_limit =
kNotificationWidth * kMaxTitleLines / kMinPixelsPerTitleCharacter;
base::string16 title = gfx::TruncateString(notification.title(),
title_character_limit,
gfx::WORD_BREAK);
if (!title_view_) {
int padding = kTitleLineHeight - font_list.GetHeight();
title_view_ = new BoundedLabel(title, font_list);
title_view_->SetLineHeight(kTitleLineHeight);
title_view_->SetLineLimit(kMaxTitleLines);
title_view_->SetColors(message_center::kRegularTextColor,
kRegularTextBackgroundColor);
title_view_->SetBorder(MakeTextBorder(padding, 3, 0));
top_view_->AddChildView(title_view_);
} else {
title_view_->SetText(title);
}
}
void NotificationView::CreateOrUpdateMessageView(
const Notification& notification) {
if (notification.message().empty()) {
if (message_view_) {
// Deletion will also remove |message_view_| from its parent.
delete message_view_;
message_view_ = NULL;
}
return;
}
DCHECK(top_view_ != NULL);
base::string16 text = gfx::TruncateString(notification.message(),
kMessageCharacterLimit,
gfx::WORD_BREAK);
if (!message_view_) {
int padding = kMessageLineHeight - views::Label().font_list().GetHeight();
message_view_ = new BoundedLabel(text);
message_view_->SetLineHeight(kMessageLineHeight);
message_view_->SetColors(message_center::kRegularTextColor,
kDimTextBackgroundColor);
message_view_->SetBorder(MakeTextBorder(padding, 4, 0));
top_view_->AddChildView(message_view_);
} else {
message_view_->SetText(text);
}
message_view_->SetVisible(!notification.items().size());
}
void NotificationView::CreateOrUpdateContextMessageView(
const Notification& notification) {
if (notification.context_message().empty()) {
if (context_message_view_) {
// Deletion will also remove |context_message_view_| from its parent.
delete context_message_view_;
context_message_view_ = NULL;
}
return;
}
DCHECK(top_view_ != NULL);
base::string16 text = gfx::TruncateString(notification.context_message(),
kContextMessageCharacterLimit,
gfx::WORD_BREAK);
if (!context_message_view_) {
int padding = kMessageLineHeight - views::Label().font_list().GetHeight();
context_message_view_ = new BoundedLabel(text);
context_message_view_->SetLineLimit(
message_center::kContextMessageLineLimit);
context_message_view_->SetLineHeight(kMessageLineHeight);
context_message_view_->SetColors(message_center::kDimTextColor,
kContextTextBackgroundColor);
context_message_view_->SetBorder(MakeTextBorder(padding, 4, 0));
top_view_->AddChildView(context_message_view_);
} else {
context_message_view_->SetText(text);
}
}
void NotificationView::CreateOrUpdateProgressBarView(
const Notification& notification) {
if (notification.type() != NOTIFICATION_TYPE_PROGRESS) {
if (progress_bar_view_) {
// Deletion will also remove |progress_bar_view_| from its parent.
delete progress_bar_view_;
progress_bar_view_ = NULL;
}
return;
}
DCHECK(top_view_ != NULL);
if (!progress_bar_view_) {
progress_bar_view_ = new NotificationProgressBar();
progress_bar_view_->SetBorder(MakeProgressBarBorder(
message_center::kProgressBarTopPadding, kProgressBarBottomPadding));
top_view_->AddChildView(progress_bar_view_);
}
progress_bar_view_->SetValue(notification.progress() / 100.0);
progress_bar_view_->SetVisible(!notification.items().size());
}
void NotificationView::CreateOrUpdateListItemViews(
const Notification& notification) {
for (size_t i = 0; i < item_views_.size(); ++i)
delete item_views_[i];
item_views_.clear();
int padding = kMessageLineHeight - views::Label().font_list().GetHeight();
std::vector<NotificationItem> items = notification.items();
if (items.size() == 0)
return;
DCHECK(top_view_);
for (size_t i = 0; i < items.size() && i < kNotificationMaximumItems; ++i) {
ItemView* item_view = new ItemView(items[i]);
item_view->SetBorder(MakeTextBorder(padding, i ? 0 : 4, 0));
item_views_.push_back(item_view);
top_view_->AddChildView(item_view);
}
}
void NotificationView::CreateOrUpdateIconView(
const Notification& notification) {
if (icon_view_) {
delete icon_view_;
icon_view_ = NULL;
}
// TODO(dewittj): Detect a compatible update and use the existing icon view.
gfx::ImageSkia icon = notification.icon().AsImageSkia();
if (notification.type() == NOTIFICATION_TYPE_SIMPLE &&
(icon.width() != kIconSize || icon.height() != kIconSize ||
HasAlpha(icon, GetWidget()))) {
views::ImageView* icon_view = new views::ImageView();
icon_view->SetImage(icon);
icon_view->SetImageSize(gfx::Size(kLegacyIconSize, kLegacyIconSize));
icon_view->SetHorizontalAlignment(views::ImageView::CENTER);
icon_view->SetVerticalAlignment(views::ImageView::CENTER);
icon_view_ = icon_view;
} else {
icon_view_ =
new ProportionalImageView(icon, gfx::Size(kIconSize, kIconSize));
}
icon_view_->set_background(
views::Background::CreateSolidBackground(kIconBackgroundColor));
AddChildView(icon_view_);
}
void NotificationView::CreateOrUpdateImageView(
const Notification& notification) {
if (image_view_) {
delete image_view_;
image_view_ = NULL;
}
DCHECK(bottom_view_);
DCHECK_EQ(this, bottom_view_->parent());
// TODO(dewittj): Detect a compatible update and use the existing image view.
if (!notification.image().IsEmpty()) {
gfx::Size image_size(kNotificationPreferredImageWidth,
kNotificationPreferredImageHeight);
image_view_ = MakeNotificationImage(notification.image(), image_size);
bottom_view_->AddChildViewAt(image_view_, 0);
}
}
void NotificationView::CreateOrUpdateActionButtonViews(
const Notification& notification) {
std::vector<ButtonInfo> buttons = notification.buttons();
bool new_buttons = action_buttons_.size() != buttons.size();
if (new_buttons || buttons.size() == 0) {
// STLDeleteElements also clears the container.
STLDeleteElements(&separators_);
STLDeleteElements(&action_buttons_);
}
DCHECK(bottom_view_);
DCHECK_EQ(this, bottom_view_->parent());
for (size_t i = 0; i < buttons.size(); ++i) {
ButtonInfo button_info = buttons[i];
if (new_buttons) {
views::View* separator = new views::ImageView();
separator->SetBorder(MakeSeparatorBorder(1, 0, kButtonSeparatorColor));
separators_.push_back(separator);
bottom_view_->AddChildView(separator);
NotificationButton* button = new NotificationButton(this);
button->SetTitle(button_info.title);
button->SetIcon(button_info.icon.AsImageSkia());
action_buttons_.push_back(button);
bottom_view_->AddChildView(button);
} else {
action_buttons_[i]->SetTitle(button_info.title);
action_buttons_[i]->SetIcon(button_info.icon.AsImageSkia());
action_buttons_[i]->SchedulePaint();
action_buttons_[i]->Layout();
}
}
if (new_buttons) {
Layout();
views::Widget* widget = GetWidget();
if (widget != NULL) {
widget->SetSize(widget->GetContentsView()->GetPreferredSize());
GetWidget()->SynthesizeMouseMoveEvent();
}
}
}
int NotificationView::GetMessageLineLimit(int title_lines, int width) const {
// Image notifications require that the image must be kept flush against
// their icons, but we can allow more text if no image.
int effective_title_lines = std::max(0, title_lines - 1);
int line_reduction_from_title = (image_view_ ? 1 : 2) * effective_title_lines;
if (!image_view_) {
// Title lines are counted as twice as big as message lines for the purpose
// of this calculation.
// The effect from the title reduction here should be:
// * 0 title lines: 5 max lines message.
// * 1 title line: 5 max lines message.
// * 2 title lines: 3 max lines message.
return std::max(
0,
message_center::kMessageExpandedLineLimit - line_reduction_from_title);
}
int message_line_limit = message_center::kMessageCollapsedLineLimit;
// Subtract any lines taken by the context message.
if (context_message_view_) {
message_line_limit -= context_message_view_->GetLinesForWidthAndLimit(
width,
message_center::kContextMessageLineLimit);
}
// The effect from the title reduction here should be:
// * 0 title lines: 2 max lines message + context message.
// * 1 title line: 2 max lines message + context message.
// * 2 title lines: 1 max lines message + context message.
message_line_limit =
std::max(0, message_line_limit - line_reduction_from_title);
return message_line_limit;
}
int NotificationView::GetMessageHeight(int width, int limit) const {
return message_view_ ?
message_view_->GetSizeForWidthAndLines(width, limit).height() : 0;
}
} // namespace message_center