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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 "chrome/browser/ui/gtk/zoom_bubble_gtk.h"
#include "base/i18n/rtl.h"
#include "base/prefs/pref_service.h"
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/chrome_notification_types.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_finder.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/gtk/gtk_theme_service.h"
#include "chrome/browser/ui/gtk/location_bar_view_gtk.h"
#include "chrome/browser/ui/zoom/zoom_controller.h"
#include "chrome/common/pref_names.h"
#include "content/public/browser/notification_details.h"
#include "content/public/browser/notification_source.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/browser/web_contents.h"
#include "grit/generated_resources.h"
#include "ui/base/gtk/gtk_hig_constants.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/gfx/rect.h"
namespace {
// Pointer to singleton object (NULL if no bubble is open).
ZoomBubbleGtk* g_bubble = NULL;
// Number of milliseconds the bubble should stay open for if it will auto-close.
const int kBubbleCloseDelay = 1500;
// Need to manually set anchor width and height to ensure that the bubble shows
// in the correct spot the first time it is displayed when no icon is present.
const int kBubbleAnchorWidth = 20;
const int kBubbleAnchorHeight = 25;
} // namespace
// static
void ZoomBubbleGtk::ShowBubble(content::WebContents* web_contents,
bool auto_close) {
Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
DCHECK(browser && browser->window() && browser->fullscreen_controller());
LocationBar* location_bar = browser->window()->GetLocationBar();
GtkWidget* anchor = browser->window()->IsFullscreen() ?
GTK_WIDGET(browser->window()->GetNativeWindow()) :
static_cast<LocationBarViewGtk*>(location_bar)->zoom_widget();
// If the bubble is already showing and its |auto_close_| value is equal to
// |auto_close|, the bubble can be reused and only the label text needs to
// be updated.
if (g_bubble &&
g_bubble->auto_close_ == auto_close &&
g_bubble->bubble_->anchor_widget() == anchor) {
g_bubble->Refresh();
} else {
// If the bubble is already showing but its |auto_close_| value is not equal
// to |auto_close|, the bubble's focus properties must change, so the
// current bubble must be closed and a new one created.
CloseBubble();
DCHECK(!g_bubble);
g_bubble = new ZoomBubbleGtk(anchor,
web_contents,
auto_close,
browser->fullscreen_controller());
}
}
// static
void ZoomBubbleGtk::CloseBubble() {
if (g_bubble)
g_bubble->Close();
}
// static
bool ZoomBubbleGtk::IsShowing() {
return g_bubble != NULL;
}
ZoomBubbleGtk::ZoomBubbleGtk(GtkWidget* anchor,
content::WebContents* web_contents,
bool auto_close,
FullscreenController* fullscreen_controller)
: auto_close_(auto_close),
mouse_inside_(false),
web_contents_(web_contents) {
GtkThemeService* theme_service =
GtkThemeService::GetFrom(Profile::FromBrowserContext(
web_contents_->GetBrowserContext()));
event_box_ = gtk_event_box_new();
gtk_event_box_set_visible_window(GTK_EVENT_BOX(event_box_), FALSE);
GtkWidget* container = gtk_vbox_new(FALSE, 0);
gtk_container_add(GTK_CONTAINER(event_box_), container);
ZoomController* zoom_controller =
ZoomController::FromWebContents(web_contents_);
int zoom_percent = zoom_controller->zoom_percent();
std::string percentage_text = UTF16ToUTF8(l10n_util::GetStringFUTF16Int(
IDS_TOOLTIP_ZOOM, zoom_percent));
label_ = theme_service->BuildLabel(percentage_text, ui::kGdkBlack);
gtk_widget_modify_font(label_, pango_font_description_from_string("13"));
gtk_misc_set_padding(GTK_MISC(label_),
ui::kControlSpacing, ui::kControlSpacing);
gtk_box_pack_start(GTK_BOX(container), label_, FALSE, FALSE, 0);
GtkWidget* set_default_button = gtk_button_new_with_label(
l10n_util::GetStringUTF8(IDS_ZOOM_SET_DEFAULT).c_str());
GtkWidget* alignment = gtk_alignment_new(0, 0, 1, 1);
gtk_alignment_set_padding(GTK_ALIGNMENT(alignment),
0,
ui::kControlSpacing,
ui::kControlSpacing,
ui::kControlSpacing);
gtk_container_add(GTK_CONTAINER(alignment), set_default_button);
gtk_box_pack_start(GTK_BOX(container), alignment, FALSE, FALSE, 0);
g_signal_connect(set_default_button, "clicked",
G_CALLBACK(&OnSetDefaultLinkClickThunk), this);
gtk_container_set_focus_child(GTK_CONTAINER(container), NULL);
gfx::Rect rect = gfx::Rect(kBubbleAnchorWidth, kBubbleAnchorHeight);
BubbleGtk::FrameStyle frame_style = gtk_widget_is_toplevel(anchor) ?
BubbleGtk::FIXED_TOP_RIGHT : BubbleGtk::ANCHOR_TOP_MIDDLE;
int bubble_options = BubbleGtk::MATCH_SYSTEM_THEME | BubbleGtk::POPUP_WINDOW;
bubble_ = BubbleGtk::Show(anchor, &rect, event_box_, frame_style,
auto_close ? bubble_options : bubble_options | BubbleGtk::GRAB_INPUT,
theme_service, NULL);
if (!bubble_) {
NOTREACHED();
return;
}
g_signal_connect(event_box_, "destroy",
G_CALLBACK(&OnDestroyThunk), this);
if (auto_close_) {
// If this is an auto-closing bubble, listen to leave/enter to keep the
// bubble alive if the mouse stays anywhere inside the bubble.
g_signal_connect_after(event_box_, "enter-notify-event",
G_CALLBACK(&OnMouseEnterThunk), this);
g_signal_connect(event_box_, "leave-notify-event",
G_CALLBACK(&OnMouseLeaveThunk), this);
// This is required as a leave is fired when the mouse goes from inside the
// bubble's container to inside the set default button.
gtk_widget_add_events(set_default_button, GDK_ENTER_NOTIFY_MASK);
g_signal_connect_after(set_default_button, "enter-notify-event",
G_CALLBACK(&OnMouseEnterThunk), this);
g_signal_connect(set_default_button, "leave-notify-event",
G_CALLBACK(&OnMouseLeaveThunk), this);
}
registrar_.Add(this,
chrome::NOTIFICATION_FULLSCREEN_CHANGED,
content::Source<FullscreenController>(fullscreen_controller));
StartTimerIfNecessary();
}
ZoomBubbleGtk::~ZoomBubbleGtk() {
DCHECK_EQ(g_bubble, this);
// Set singleton pointer to NULL.
g_bubble = NULL;
}
void ZoomBubbleGtk::Refresh() {
ZoomController* zoom_controller =
ZoomController::FromWebContents(web_contents_);
int zoom_percent = zoom_controller->zoom_percent();
base::string16 text =
l10n_util::GetStringFUTF16Int(IDS_TOOLTIP_ZOOM, zoom_percent);
gtk_label_set_text(GTK_LABEL(g_bubble->label_), UTF16ToUTF8(text).c_str());
StartTimerIfNecessary();
}
void ZoomBubbleGtk::StartTimerIfNecessary() {
if (!auto_close_ || mouse_inside_)
return;
if (timer_.IsRunning()) {
timer_.Reset();
} else {
timer_.Start(
FROM_HERE,
base::TimeDelta::FromMilliseconds(kBubbleCloseDelay),
this,
&ZoomBubbleGtk::Close);
}
}
void ZoomBubbleGtk::StopTimerIfNecessary() {
if (timer_.IsRunning())
timer_.Stop();
}
void ZoomBubbleGtk::Close() {
DCHECK(bubble_);
bubble_->Close();
}
void ZoomBubbleGtk::OnDestroy(GtkWidget* widget) {
// Listen to the destroy signal and delete this instance when it is caught.
delete this;
}
void ZoomBubbleGtk::OnSetDefaultLinkClick(GtkWidget* widget) {
double default_zoom_level = Profile::FromBrowserContext(
web_contents_->GetBrowserContext())->GetPrefs()->GetDouble(
prefs::kDefaultZoomLevel);
web_contents_->GetRenderViewHost()->SetZoomLevel(default_zoom_level);
}
gboolean ZoomBubbleGtk::OnMouseEnter(GtkWidget* widget,
GdkEventCrossing* event) {
mouse_inside_ = true;
StopTimerIfNecessary();
return FALSE;
}
gboolean ZoomBubbleGtk::OnMouseLeave(GtkWidget* widget,
GdkEventCrossing* event) {
mouse_inside_ = false;
StartTimerIfNecessary();
return FALSE;
}
void ZoomBubbleGtk::Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK_EQ(type, chrome::NOTIFICATION_FULLSCREEN_CHANGED);
CloseBubble();
}
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