native_app_window_gtk.cc revision 0f1bc08d4cfcc34181b0b5cbf065c40f687bf740 
1// Copyright 2013 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/ui/gtk/apps/native_app_window_gtk.h"
6
7#include <gdk/gdkx.h>
8#include <vector>
9
10#include "base/message_loop/message_pump_gtk.h"
11#include "base/strings/utf_string_conversions.h"
12#include "chrome/browser/profiles/profile.h"
13#include "chrome/browser/ui/gtk/extensions/extension_keybinding_registry_gtk.h"
14#include "chrome/browser/ui/gtk/gtk_util.h"
15#include "chrome/browser/ui/gtk/gtk_window_util.h"
16#include "chrome/browser/web_applications/web_app.h"
17#include "chrome/common/extensions/extension.h"
18#include "content/public/browser/render_view_host.h"
19#include "content/public/browser/render_widget_host_view.h"
20#include "content/public/browser/web_contents.h"
21#include "content/public/browser/web_contents_view.h"
22#include "ui/base/x/active_window_watcher_x.h"
23#include "ui/gfx/gtk_util.h"
24#include "ui/gfx/image/image.h"
25#include "ui/gfx/rect.h"
26
27using apps::ShellWindow;
28
29namespace {
30
31// The timeout in milliseconds before we'll get the true window position with
32// gtk_window_get_position() after the last GTK configure-event signal.
33const int kDebounceTimeoutMilliseconds = 100;
34
35const char* kAtomsToCache[] = {
36  "_NET_WM_STATE",
37  "_NET_WM_STATE_HIDDEN",
38  NULL
39};
40
41} // namespace
42
43NativeAppWindowGtk::NativeAppWindowGtk(ShellWindow* shell_window,
44                                       const ShellWindow::CreateParams& params)
45    : shell_window_(shell_window),
46      window_(NULL),
47      state_(GDK_WINDOW_STATE_WITHDRAWN),
48      is_active_(false),
49      content_thinks_its_fullscreen_(false),
50      maximize_pending_(false),
51      frameless_(params.frame == ShellWindow::FRAME_NONE),
52      always_on_top_(params.always_on_top),
53      frame_cursor_(NULL),
54      atom_cache_(base::MessagePumpGtk::GetDefaultXDisplay(), kAtomsToCache),
55      is_x_event_listened_(false) {
56  Observe(web_contents());
57
58  window_ = GTK_WINDOW(gtk_window_new(GTK_WINDOW_TOPLEVEL));
59
60  gfx::NativeView native_view =
61      web_contents()->GetView()->GetNativeView();
62  gtk_container_add(GTK_CONTAINER(window_), native_view);
63
64  if (params.bounds.x() != INT_MIN && params.bounds.y() != INT_MIN)
65    gtk_window_move(window_, params.bounds.x(), params.bounds.y());
66
67  // This is done to avoid a WM "feature" where setting the window size to
68  // the monitor size causes the WM to set the EWMH for full screen mode.
69  int win_height = params.bounds.height();
70  if (frameless_ &&
71      gtk_window_util::BoundsMatchMonitorSize(window_, params.bounds)) {
72    win_height -= 1;
73  }
74  gtk_window_set_default_size(window_, params.bounds.width(), win_height);
75
76  resizable_ = params.resizable;
77  if (!resizable_) {
78    // If the window doesn't have a size request when we set resizable to
79    // false, GTK will shrink the window to 1x1px.
80    gtk_widget_set_size_request(GTK_WIDGET(window_),
81        params.bounds.width(), win_height);
82    gtk_window_set_resizable(window_, FALSE);
83  }
84
85  // make sure bounds_ and restored_bounds_ have correct values until we
86  // get our first configure-event
87  bounds_ = restored_bounds_ = params.bounds;
88  gint x, y;
89  gtk_window_get_position(window_, &x, &y);
90  bounds_.set_origin(gfx::Point(x, y));
91
92  // Hide titlebar when {frame: 'none'} specified on ShellWindow.
93  if (frameless_)
94    gtk_window_set_decorated(window_, false);
95
96  if (always_on_top_)
97    gtk_window_set_keep_above(window_, TRUE);
98
99  UpdateWindowMinMaxSize();
100
101  // In some (older) versions of compiz, raising top-level windows when they
102  // are partially off-screen causes them to get snapped back on screen, not
103  // always even on the current virtual desktop.  If we are running under
104  // compiz, suppress such raises, as they are not necessary in compiz anyway.
105  if (ui::GuessWindowManager() == ui::WM_COMPIZ)
106    suppress_window_raise_ = true;
107
108  gtk_window_set_title(window_, extension()->name().c_str());
109
110  std::string app_name = web_app::GenerateApplicationNameFromExtensionId(
111      extension()->id());
112  gtk_window_util::SetWindowCustomClass(window_,
113      web_app::GetWMClassFromAppName(app_name));
114
115  g_signal_connect(window_, "delete-event",
116                   G_CALLBACK(OnMainWindowDeleteEventThunk), this);
117  g_signal_connect(window_, "configure-event",
118                   G_CALLBACK(OnConfigureThunk), this);
119  g_signal_connect(window_, "window-state-event",
120                   G_CALLBACK(OnWindowStateThunk), this);
121  if (frameless_) {
122    g_signal_connect(window_, "button-press-event",
123                     G_CALLBACK(OnButtonPressThunk), this);
124    g_signal_connect(window_, "motion-notify-event",
125                     G_CALLBACK(OnMouseMoveEventThunk), this);
126  }
127
128  // If _NET_WM_STATE_HIDDEN is in _NET_SUPPORTED, listen for XEvent to work
129  // around GTK+ not reporting minimization state changes. See comment in the
130  // |OnXEvent|.
131  std::vector< ::Atom> supported_atoms;
132  if (ui::GetAtomArrayProperty(ui::GetX11RootWindow(),
133                               "_NET_SUPPORTED",
134                               &supported_atoms)) {
135    if (std::find(supported_atoms.begin(),
136                  supported_atoms.end(),
137                  atom_cache_.GetAtom("_NET_WM_STATE_HIDDEN")) !=
138        supported_atoms.end()) {
139      GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(window_));
140      gdk_window_add_filter(window,
141                            &NativeAppWindowGtk::OnXEventThunk,
142                            this);
143      is_x_event_listened_ = true;
144    }
145  }
146
147  // Add the keybinding registry.
148  extension_keybinding_registry_.reset(new ExtensionKeybindingRegistryGtk(
149      shell_window_->profile(),
150      window_,
151      extensions::ExtensionKeybindingRegistry::PLATFORM_APPS_ONLY,
152      shell_window_));
153
154  ui::ActiveWindowWatcherX::AddObserver(this);
155}
156
157NativeAppWindowGtk::~NativeAppWindowGtk() {
158  ui::ActiveWindowWatcherX::RemoveObserver(this);
159  if (is_x_event_listened_) {
160    gdk_window_remove_filter(NULL,
161                             &NativeAppWindowGtk::OnXEventThunk,
162                             this);
163  }
164}
165
166bool NativeAppWindowGtk::IsActive() const {
167  if (ui::ActiveWindowWatcherX::WMSupportsActivation())
168    return is_active_;
169
170  // This still works even though we don't get the activation notification.
171  return gtk_window_is_active(window_);
172}
173
174bool NativeAppWindowGtk::IsMaximized() const {
175  return (state_ & GDK_WINDOW_STATE_MAXIMIZED);
176}
177
178bool NativeAppWindowGtk::IsMinimized() const {
179  return (state_ & GDK_WINDOW_STATE_ICONIFIED);
180}
181
182bool NativeAppWindowGtk::IsFullscreen() const {
183  return (state_ & GDK_WINDOW_STATE_FULLSCREEN);
184}
185
186gfx::NativeWindow NativeAppWindowGtk::GetNativeWindow() {
187  return window_;
188}
189
190gfx::Rect NativeAppWindowGtk::GetRestoredBounds() const {
191  gfx::Rect window_bounds = restored_bounds_;
192  window_bounds.Inset(-GetFrameInsets());
193  return window_bounds;
194}
195
196ui::WindowShowState NativeAppWindowGtk::GetRestoredState() const {
197  if (IsMaximized())
198    return ui::SHOW_STATE_MAXIMIZED;
199  if (IsFullscreen())
200    return ui::SHOW_STATE_FULLSCREEN;
201  return ui::SHOW_STATE_NORMAL;
202}
203
204gfx::Rect NativeAppWindowGtk::GetBounds() const {
205  gfx::Rect window_bounds = bounds_;
206  window_bounds.Inset(-GetFrameInsets());
207  return window_bounds;
208}
209
210void NativeAppWindowGtk::Show() {
211  gtk_window_present(window_);
212}
213
214void NativeAppWindowGtk::ShowInactive() {
215  gtk_window_set_focus_on_map(window_, false);
216  gtk_widget_show(GTK_WIDGET(window_));
217}
218
219void NativeAppWindowGtk::Hide() {
220  gtk_widget_hide(GTK_WIDGET(window_));
221}
222
223void NativeAppWindowGtk::Close() {
224  shell_window_->OnNativeWindowChanged();
225
226  // Cancel any pending callback from the window configure debounce timer.
227  window_configure_debounce_timer_.Stop();
228
229  GtkWidget* window = GTK_WIDGET(window_);
230  // To help catch bugs in any event handlers that might get fired during the
231  // destruction, set window_ to NULL before any handlers will run.
232  window_ = NULL;
233
234  // OnNativeClose does a delete this so no other members should
235  // be accessed after. gtk_widget_destroy is safe (and must
236  // be last).
237  shell_window_->OnNativeClose();
238  gtk_widget_destroy(window);
239}
240
241void NativeAppWindowGtk::Activate() {
242  gtk_window_present(window_);
243}
244
245void NativeAppWindowGtk::Deactivate() {
246  gdk_window_lower(gtk_widget_get_window(GTK_WIDGET(window_)));
247}
248
249void NativeAppWindowGtk::Maximize() {
250  // Represent the window first in order to keep the maximization behavior
251  // consistency with Windows platform. Otherwise the window will be hidden if
252  // it has been minimized.
253  gtk_window_present(window_);
254
255  if (!resizable_) {
256    // When the window is not resizable, we still want to make this call succeed
257    // but gtk will not allow it if the window is not resizable. The actual
258    // maximization will happen with the subsequent OnConfigureDebounced call,
259    // that will be triggered when the window manager's resizable property
260    // changes.
261    maximize_pending_ = true;
262    gtk_window_set_resizable(window_, TRUE);
263  } else {
264    gtk_window_maximize(window_);
265  }
266}
267
268void NativeAppWindowGtk::Minimize() {
269  gtk_window_iconify(window_);
270}
271
272void NativeAppWindowGtk::Restore() {
273  if (IsMaximized())
274    gtk_window_unmaximize(window_);
275  else if (IsMinimized())
276    gtk_window_deiconify(window_);
277
278  // Represent the window to keep restoration behavior consistency with Windows
279  // platform.
280  // TODO(zhchbin): verify whether we need this until http://crbug.com/261013 is
281  // fixed.
282  gtk_window_present(window_);
283}
284
285void NativeAppWindowGtk::SetBounds(const gfx::Rect& bounds) {
286  gfx::Rect content_bounds = bounds;
287  content_bounds.Inset(GetFrameInsets());
288  gtk_window_move(window_, content_bounds.x(), content_bounds.y());
289  if (!resizable_) {
290    if (frameless_ &&
291        gtk_window_util::BoundsMatchMonitorSize(window_, content_bounds)) {
292      content_bounds.set_height(content_bounds.height() - 1);
293    }
294    // TODO(jeremya): set_size_request doesn't honor min/max size, so the
295    // bounds should be constrained manually.
296    gtk_widget_set_size_request(GTK_WIDGET(window_),
297        content_bounds.width(), content_bounds.height());
298  } else {
299    gtk_window_util::SetWindowSize(window_,
300        gfx::Size(bounds.width(), bounds.height()));
301  }
302}
303
304GdkFilterReturn NativeAppWindowGtk::OnXEvent(GdkXEvent* gdk_x_event,
305                                             GdkEvent* gdk_event) {
306  // Work around GTK+ not reporting minimization state changes. Listen
307  // for _NET_WM_STATE property changes and use _NET_WM_STATE_HIDDEN's
308  // presence to set or clear the iconified bit if _NET_WM_STATE_HIDDEN
309  // is supported. http://crbug.com/162794.
310  XEvent* x_event = static_cast<XEvent*>(gdk_x_event);
311  std::vector< ::Atom> atom_list;
312
313  if (x_event->type == PropertyNotify &&
314      x_event->xproperty.atom == atom_cache_.GetAtom("_NET_WM_STATE") &&
315      GTK_WIDGET(window_)->window &&
316      ui::GetAtomArrayProperty(GDK_WINDOW_XWINDOW(GTK_WIDGET(window_)->window),
317                               "_NET_WM_STATE",
318                               &atom_list)) {
319    std::vector< ::Atom>::iterator it =
320        std::find(atom_list.begin(),
321                  atom_list.end(),
322                  atom_cache_.GetAtom("_NET_WM_STATE_HIDDEN"));
323    state_ = (it != atom_list.end()) ? GDK_WINDOW_STATE_ICONIFIED :
324        static_cast<GdkWindowState>(state_ & ~GDK_WINDOW_STATE_ICONIFIED);
325
326    shell_window_->OnNativeWindowChanged();
327  }
328
329  return GDK_FILTER_CONTINUE;
330}
331
332void NativeAppWindowGtk::FlashFrame(bool flash) {
333  gtk_window_set_urgency_hint(window_, flash);
334}
335
336bool NativeAppWindowGtk::IsAlwaysOnTop() const {
337  return always_on_top_;
338}
339
340void NativeAppWindowGtk::RenderViewHostChanged(
341    content::RenderViewHost* old_host,
342    content::RenderViewHost* new_host) {
343  web_contents()->GetView()->Focus();
344}
345
346void NativeAppWindowGtk::SetAlwaysOnTop(bool always_on_top) {
347  if (always_on_top_ != always_on_top) {
348    // gdk_window_get_state() does not give us the correct value for the
349    // GDK_WINDOW_STATE_ABOVE bit. Cache the current state.
350    always_on_top_ = always_on_top;
351    gtk_window_set_keep_above(window_, always_on_top_ ? TRUE : FALSE);
352    shell_window_->OnNativeWindowChanged();
353  }
354}
355
356gfx::NativeView NativeAppWindowGtk::GetHostView() const {
357  NOTIMPLEMENTED();
358  return NULL;
359}
360
361gfx::Point NativeAppWindowGtk::GetDialogPosition(const gfx::Size& size) {
362  gint current_width = 0;
363  gint current_height = 0;
364  gtk_window_get_size(window_, &current_width, &current_height);
365  return gfx::Point(current_width / 2 - size.width() / 2,
366                    current_height / 2 - size.height() / 2);
367}
368
369gfx::Size NativeAppWindowGtk::GetMaximumDialogSize() {
370  gint current_width = 0;
371  gint current_height = 0;
372  gtk_window_get_size(window_, &current_width, &current_height);
373  return gfx::Size(current_width, current_height);
374}
375
376void NativeAppWindowGtk::AddObserver(
377    web_modal::ModalDialogHostObserver* observer) {
378  observer_list_.AddObserver(observer);
379}
380
381void NativeAppWindowGtk::RemoveObserver(
382    web_modal::ModalDialogHostObserver* observer) {
383  observer_list_.RemoveObserver(observer);
384}
385
386void NativeAppWindowGtk::ActiveWindowChanged(GdkWindow* active_window) {
387  // Do nothing if we're in the process of closing the browser window.
388  if (!window_)
389    return;
390
391  is_active_ = gtk_widget_get_window(GTK_WIDGET(window_)) == active_window;
392  if (is_active_)
393    shell_window_->OnNativeWindowActivated();
394}
395
396// Callback for the delete event.  This event is fired when the user tries to
397// close the window (e.g., clicking on the X in the window manager title bar).
398gboolean NativeAppWindowGtk::OnMainWindowDeleteEvent(GtkWidget* widget,
399                                                     GdkEvent* event) {
400  Close();
401
402  // Return true to prevent the GTK window from being destroyed.  Close will
403  // destroy it for us.
404  return TRUE;
405}
406
407gboolean NativeAppWindowGtk::OnConfigure(GtkWidget* widget,
408                                         GdkEventConfigure* event) {
409  // We update |bounds_| but not |restored_bounds_| here.  The latter needs
410  // to be updated conditionally when the window is non-maximized and non-
411  // fullscreen, but whether those state updates have been processed yet is
412  // window-manager specific.  We update |restored_bounds_| in the debounced
413  // handler below, after the window state has been updated.
414  bounds_.SetRect(event->x, event->y, event->width, event->height);
415
416  // The GdkEventConfigure* we get here doesn't have quite the right
417  // coordinates though (they're relative to the drawable window area, rather
418  // than any window manager decorations, if enabled), so we need to call
419  // gtk_window_get_position() to get the right values. (Otherwise session
420  // restore, if enabled, will restore windows to incorrect positions.) That's
421  // a round trip to the X server though, so we set a debounce timer and only
422  // call it (in OnConfigureDebounced() below) after we haven't seen a
423  // reconfigure event in a short while.
424  // We don't use Reset() because the timer may not yet be running.
425  // (In that case Stop() is a no-op.)
426  window_configure_debounce_timer_.Stop();
427  window_configure_debounce_timer_.Start(FROM_HERE,
428      base::TimeDelta::FromMilliseconds(kDebounceTimeoutMilliseconds), this,
429      &NativeAppWindowGtk::OnConfigureDebounced);
430
431  return FALSE;
432}
433
434void NativeAppWindowGtk::OnConfigureDebounced() {
435  gtk_window_util::UpdateWindowPosition(this, &bounds_, &restored_bounds_);
436  shell_window_->OnNativeWindowChanged();
437
438  FOR_EACH_OBSERVER(web_modal::ModalDialogHostObserver,
439                    observer_list_,
440                    OnPositionRequiresUpdate());
441
442  // Fullscreen of non-resizable windows requires them to be made resizable
443  // first. After that takes effect and OnConfigure is called we transition
444  // to fullscreen.
445  if (!IsFullscreen() && IsFullscreenOrPending()) {
446    gtk_window_fullscreen(window_);
447  }
448
449  // maximize_pending_ is the boolean that lets us know that the window is in
450  // the process of being maximized but was set as not resizable.
451  // This function will be called twice during the maximization process:
452  // 1. gtk_window_maximize() is called to maximize the window;
453  // 2. gtk_set_resizable(, FALSE) is called to make the window no longer
454  //    resizable.
455  // gtk_window_maximize() will cause ::OnConfigureDebounced to be called
456  // again, at which time we will run into the second step.
457  if (maximize_pending_) {
458    if (!(state_ & GDK_WINDOW_STATE_MAXIMIZED)) {
459      gtk_window_maximize(window_);
460    } else {
461      maximize_pending_ = false;
462      if (!resizable_)
463        gtk_window_set_resizable(window_, FALSE);
464    }
465  }
466}
467
468gboolean NativeAppWindowGtk::OnWindowState(GtkWidget* sender,
469                                           GdkEventWindowState* event) {
470  state_ = event->new_window_state;
471
472  if (content_thinks_its_fullscreen_ &&
473      !(state_ & GDK_WINDOW_STATE_FULLSCREEN)) {
474    content_thinks_its_fullscreen_ = false;
475    content::RenderViewHost* rvh = web_contents()->GetRenderViewHost();
476    if (rvh)
477      rvh->ExitFullscreen();
478  }
479
480  return FALSE;
481}
482
483bool NativeAppWindowGtk::GetWindowEdge(int x, int y, GdkWindowEdge* edge) {
484  if (!frameless_)
485    return false;
486
487  if (IsMaximized() || IsFullscreen())
488    return false;
489
490  return gtk_window_util::GetWindowEdge(bounds_.size(), 0, x, y, edge);
491}
492
493gboolean NativeAppWindowGtk::OnMouseMoveEvent(GtkWidget* widget,
494                                              GdkEventMotion* event) {
495  if (!frameless_) {
496    // Reset the cursor.
497    if (frame_cursor_) {
498      frame_cursor_ = NULL;
499      gdk_window_set_cursor(gtk_widget_get_window(GTK_WIDGET(window_)), NULL);
500    }
501    return FALSE;
502  }
503
504  if (!resizable_)
505    return FALSE;
506
507  // Update the cursor if we're on the custom frame border.
508  GdkWindowEdge edge;
509  bool has_hit_edge = GetWindowEdge(static_cast<int>(event->x),
510                                    static_cast<int>(event->y), &edge);
511  GdkCursorType new_cursor = GDK_LAST_CURSOR;
512  if (has_hit_edge)
513    new_cursor = gtk_window_util::GdkWindowEdgeToGdkCursorType(edge);
514
515  GdkCursorType last_cursor = GDK_LAST_CURSOR;
516  if (frame_cursor_)
517    last_cursor = frame_cursor_->type;
518
519  if (last_cursor != new_cursor) {
520    frame_cursor_ = has_hit_edge ? gfx::GetCursor(new_cursor) : NULL;
521    gdk_window_set_cursor(gtk_widget_get_window(GTK_WIDGET(window_)),
522                          frame_cursor_);
523  }
524  return FALSE;
525}
526
527gboolean NativeAppWindowGtk::OnButtonPress(GtkWidget* widget,
528                                           GdkEventButton* event) {
529  DCHECK(frameless_);
530  // Make the button press coordinate relative to the browser window.
531  int win_x, win_y;
532  GdkWindow* gdk_window = gtk_widget_get_window(GTK_WIDGET(window_));
533  gdk_window_get_origin(gdk_window, &win_x, &win_y);
534
535  GdkWindowEdge edge;
536  gfx::Point point(static_cast<int>(event->x_root - win_x),
537                   static_cast<int>(event->y_root - win_y));
538  bool has_hit_edge = resizable_ && GetWindowEdge(point.x(), point.y(), &edge);
539  bool has_hit_titlebar =
540      draggable_region_ && draggable_region_->contains(event->x, event->y);
541
542  if (event->button == 1) {
543    if (GDK_BUTTON_PRESS == event->type) {
544      // Raise the window after a click on either the titlebar or the border to
545      // match the behavior of most window managers, unless that behavior has
546      // been suppressed.
547      if ((has_hit_titlebar || has_hit_edge) && !suppress_window_raise_)
548        gdk_window_raise(GTK_WIDGET(widget)->window);
549
550      if (has_hit_edge) {
551        gtk_window_begin_resize_drag(window_, edge, event->button,
552                                     static_cast<gint>(event->x_root),
553                                     static_cast<gint>(event->y_root),
554                                     event->time);
555        return TRUE;
556      } else if (has_hit_titlebar) {
557        return gtk_window_util::HandleTitleBarLeftMousePress(
558            window_, bounds_, event);
559      }
560    } else if (GDK_2BUTTON_PRESS == event->type) {
561      if (has_hit_titlebar && resizable_) {
562        // Maximize/restore on double click.
563        if (IsMaximized()) {
564          gtk_window_util::UnMaximize(GTK_WINDOW(widget),
565              bounds_, restored_bounds_);
566        } else {
567          gtk_window_maximize(window_);
568        }
569        return TRUE;
570      }
571    }
572  } else if (event->button == 2) {
573    if (has_hit_titlebar || has_hit_edge)
574      gdk_window_lower(gdk_window);
575    return TRUE;
576  }
577
578  return FALSE;
579}
580
581// NativeAppWindow implementation:
582
583void NativeAppWindowGtk::SetFullscreen(bool fullscreen) {
584  content_thinks_its_fullscreen_ = fullscreen;
585  if (fullscreen){
586    if (resizable_) {
587      gtk_window_fullscreen(window_);
588    } else {
589      // We must first make the window resizable. That won't take effect
590      // immediately, so OnConfigureDebounced completes the fullscreen call.
591      gtk_window_set_resizable(window_, TRUE);
592    }
593  } else {
594    gtk_window_unfullscreen(window_);
595    if (!resizable_)
596      gtk_window_set_resizable(window_, FALSE);
597  }
598}
599
600bool NativeAppWindowGtk::IsFullscreenOrPending() const {
601  // |content_thinks_its_fullscreen_| is used when transitioning, and when
602  // the state change will not be made for some time. However, it is possible
603  // for a state update to be made before the final fullscreen state comes.
604  // In that case, |content_thinks_its_fullscreen_| will be cleared, but we
605  // will fall back to |IsFullscreen| which will soon have the correct state.
606  return content_thinks_its_fullscreen_ || IsFullscreen();
607}
608
609bool NativeAppWindowGtk::IsDetached() const {
610  return false;
611}
612
613void NativeAppWindowGtk::UpdateWindowIcon() {
614  Profile* profile = shell_window_->profile();
615  gfx::Image app_icon = shell_window_->app_icon();
616  if (!app_icon.IsEmpty())
617    gtk_util::SetWindowIcon(window_, profile, app_icon.ToGdkPixbuf());
618  else
619    gtk_util::SetWindowIcon(window_, profile);
620}
621
622void NativeAppWindowGtk::UpdateWindowTitle() {
623  string16 title = shell_window_->GetTitle();
624  gtk_window_set_title(window_, UTF16ToUTF8(title).c_str());
625}
626
627void NativeAppWindowGtk::UpdateDraggableRegions(
628    const std::vector<extensions::DraggableRegion>& regions) {
629  // Draggable region is not supported for non-frameless window.
630  if (!frameless_)
631    return;
632
633  draggable_region_.reset(ShellWindow::RawDraggableRegionsToSkRegion(regions));
634}
635
636SkRegion* NativeAppWindowGtk::GetDraggableRegion() {
637  return draggable_region_.get();
638}
639
640void NativeAppWindowGtk::UpdateInputRegion(scoped_ptr<SkRegion> region) {
641  NOTIMPLEMENTED();
642}
643
644void NativeAppWindowGtk::HandleKeyboardEvent(
645    const content::NativeWebKeyboardEvent& event) {
646  // No-op.
647}
648
649bool NativeAppWindowGtk::IsFrameless() const {
650  return frameless_;
651}
652
653gfx::Insets NativeAppWindowGtk::GetFrameInsets() const {
654  if (frameless_)
655    return gfx::Insets();
656  GdkWindow* gdk_window = gtk_widget_get_window(GTK_WIDGET(window_));
657  if (!gdk_window)
658    return gfx::Insets();
659
660  gint current_width = 0;
661  gint current_height = 0;
662  gtk_window_get_size(window_, &current_width, &current_height);
663  gint current_x = 0;
664  gint current_y = 0;
665  gdk_window_get_position(gdk_window, &current_x, &current_y);
666  GdkRectangle rect_with_decorations = {0};
667  gdk_window_get_frame_extents(gdk_window,
668                               &rect_with_decorations);
669
670  int left_inset = current_x - rect_with_decorations.x;
671  int top_inset = current_y - rect_with_decorations.y;
672  return gfx::Insets(
673      top_inset,
674      left_inset,
675      rect_with_decorations.height - current_height - top_inset,
676      rect_with_decorations.width - current_width - left_inset);
677}
678
679void NativeAppWindowGtk::HideWithApp() {}
680void NativeAppWindowGtk::ShowWithApp() {}
681
682void NativeAppWindowGtk::UpdateWindowMinMaxSize() {
683  GdkGeometry hints;
684  int hints_mask = 0;
685  if (shell_window_->size_constraints().HasMinimumSize()) {
686    gfx::Size min_size = shell_window_->size_constraints().GetMinimumSize();
687    hints.min_height = min_size.height();
688    hints.min_width = min_size.width();
689    hints_mask |= GDK_HINT_MIN_SIZE;
690  }
691  if (shell_window_->size_constraints().HasMaximumSize()) {
692    gfx::Size max_size = shell_window_->size_constraints().GetMaximumSize();
693    const int kUnboundedSize = ShellWindow::SizeConstraints::kUnboundedSize;
694    hints.max_height = max_size.height() == kUnboundedSize ?
695        G_MAXINT : max_size.height();
696    hints.max_width = max_size.width() == kUnboundedSize ?
697        G_MAXINT : max_size.width();
698    hints_mask |= GDK_HINT_MAX_SIZE;
699  }
700  if (hints_mask) {
701    gtk_window_set_geometry_hints(
702        window_,
703        GTK_WIDGET(window_),
704        &hints,
705        static_cast<GdkWindowHints>(hints_mask));
706  }
707}
708