Delete the GTK+ port of Chrome.

ui/gfx/screen_gtk.cc

-// 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/gfx/screen.h"
-
-#include <gdk/gdkx.h>
-#include <gtk/gtk.h>
-
-#include "base/logging.h"
-#include "ui/gfx/display.h"
-
-namespace {
-
-bool GetScreenWorkArea(gfx::Rect* out_rect) {
-  gboolean ok;
-  guchar* raw_data = NULL;
-  gint data_len = 0;
-  ok = gdk_property_get(gdk_get_default_root_window(),  // a gdk window
-                        gdk_atom_intern("_NET_WORKAREA", FALSE),  // property
-                        gdk_atom_intern("CARDINAL", FALSE),  // property type
-                        0,  // byte offset into property
-                        0xff,  // property length to retrieve
-                        false,  // delete property after retrieval?
-                        NULL,  // returned property type
-                        NULL,  // returned data format
-                        &data_len,  // returned data len
-                        &raw_data);  // returned data
-  if (!ok)
-    return false;
-
-  // We expect to get four longs back: x, y, width, height.
-  if (data_len < static_cast<gint>(4 * sizeof(glong))) {
-    NOTREACHED();
-    g_free(raw_data);
-    return false;
-  }
-
-  glong* data = reinterpret_cast<glong*>(raw_data);
-  gint x = data[0];
-  gint y = data[1];
-  gint width = data[2];
-  gint height = data[3];
-  g_free(raw_data);
-
-  out_rect->SetRect(x, y, width, height);
-  return true;
-}
-
-gfx::Display GetDisplayForMonitorNum(GdkScreen* screen, gint monitor_num) {
-  GdkRectangle bounds;
-  gdk_screen_get_monitor_geometry(screen, monitor_num, &bounds);
-  // Use |monitor_num| as display id.
-  gfx::Display display(monitor_num, gfx::Rect(bounds));
-  if (gdk_screen_get_primary_monitor(screen) == monitor_num) {
-    gfx::Rect rect;
-    if (GetScreenWorkArea(&rect))
-      display.set_work_area(gfx::IntersectRects(rect, display.bounds()));
-  }
-  return display;
-}
-
-gfx::Display GetMonitorAreaNearestWindow(gfx::NativeView view) {
-  GdkScreen* screen = gdk_screen_get_default();
-  gint monitor_num = 0;
-  if (view && GTK_IS_WINDOW(view)) {
-    GtkWidget* top_level = gtk_widget_get_toplevel(view);
-    DCHECK(GTK_IS_WINDOW(top_level));
-    GtkWindow* window = GTK_WINDOW(top_level);
-    screen = gtk_window_get_screen(window);
-    monitor_num = gdk_screen_get_monitor_at_window(
-        screen,
-        gtk_widget_get_window(top_level));
-  }
-  return GetDisplayForMonitorNum(screen, monitor_num);
-}
-
-class ScreenGtk : public gfx::Screen {
- public:
-  ScreenGtk() {
-  }
-
-  virtual ~ScreenGtk() {
-  }
-
-  virtual bool IsDIPEnabled() OVERRIDE {
-    return false;
-  }
-
-  virtual gfx::Point GetCursorScreenPoint() OVERRIDE {
-    gint x, y;
-    gdk_display_get_pointer(gdk_display_get_default(), NULL, &x, &y, NULL);
-    return gfx::Point(x, y);
-  }
-
-  // Returns the window under the cursor.
-  virtual gfx::NativeWindow GetWindowUnderCursor() OVERRIDE {
-    GdkWindow* window = gdk_window_at_pointer(NULL, NULL);
-    if (!window)
-      return NULL;
-
-    gpointer data = NULL;
-    gdk_window_get_user_data(window, &data);
-    GtkWidget* widget = reinterpret_cast<GtkWidget*>(data);
-    if (!widget)
-      return NULL;
-    widget = gtk_widget_get_toplevel(widget);
-    return GTK_IS_WINDOW(widget) ? GTK_WINDOW(widget) : NULL;
-  }
-
-  virtual gfx::NativeWindow GetWindowAtScreenPoint(const gfx::Point& point)
-      OVERRIDE {
-    NOTIMPLEMENTED();
-    return NULL;
-  }
-
-  // Returns the number of displays.
-  // Mirrored displays are excluded; this method is intended to return the
-  // number of distinct, usable displays.
-  virtual int GetNumDisplays() const OVERRIDE {
-    // This query is kinda bogus for Linux -- do we want number of X screens?
-    // The number of monitors Xinerama has?  We'll just use whatever GDK uses.
-    GdkScreen* screen = gdk_screen_get_default();
-    return gdk_screen_get_n_monitors(screen);
-  }
-
-  virtual std::vector<gfx::Display> GetAllDisplays() const OVERRIDE {
-    GdkScreen* screen = gdk_screen_get_default();
-    gint num_of_displays = gdk_screen_get_n_monitors(screen);
-    std::vector<gfx::Display> all_displays;
-    for (gint i = 0; i < num_of_displays; ++i)
-      all_displays.push_back(GetDisplayForMonitorNum(screen, i));
-    return all_displays;
-  }
-
-  // Returns the display nearest the specified window.
-  virtual gfx::Display GetDisplayNearestWindow(
-      gfx::NativeView view) const OVERRIDE {
-    // Do not use the _NET_WORKAREA here, this is supposed to be an area on a
-    // specific monitor, and _NET_WORKAREA is a hint from the WM that
-    // generally spans across all monitors.  This would make the work area
-    // larger than the monitor.
-    // TODO(danakj) This is a work-around as there is no standard way to get
-    // this area, but it is a rect that we should be computing.  The standard
-    // means to compute this rect would be to watch all windows with
-    // _NET_WM_STRUT(_PARTIAL) hints, and subtract their space from the
-    // physical area of the display to construct a work area.
-    // TODO(oshima): Implement Observer.
-    return GetMonitorAreaNearestWindow(view);
-  }
-
-  // Returns the the display nearest the specified point.
-  virtual gfx::Display GetDisplayNearestPoint(
-      const gfx::Point& point) const OVERRIDE {
-    GdkScreen* screen = gdk_screen_get_default();
-    gint monitor = gdk_screen_get_monitor_at_point(
-        screen, point.x(), point.y());
-    // TODO(oshima): Implement Observer.
-    return GetDisplayForMonitorNum(screen, monitor);
-  }
-
-  // Returns the display that most closely intersects the provided bounds.
-  virtual gfx::Display GetDisplayMatching(
-      const gfx::Rect& match_rect) const OVERRIDE {
-    std::vector<gfx::Display> displays = GetAllDisplays();
-    gfx::Display maxIntersectDisplay;
-    gfx::Rect maxIntersection;
-    for (std::vector<gfx::Display>::iterator it = displays.begin();
-         it != displays.end(); ++it) {
-      gfx::Rect displayIntersection = it->bounds();
-      displayIntersection.Intersect(match_rect);
-      if (displayIntersection.size().GetArea() >
-          maxIntersection.size().GetArea()) {
-        maxIntersectDisplay = *it;
-        maxIntersection = displayIntersection;
-      }
-    }
-    return maxIntersectDisplay.is_valid() ?
-        maxIntersectDisplay : GetPrimaryDisplay();
-  }
-
-  // Returns the primary display.
-  virtual gfx::Display GetPrimaryDisplay() const OVERRIDE {
-    GdkScreen* screen = gdk_screen_get_default();
-    gint primary_monitor_index = gdk_screen_get_primary_monitor(screen);
-    // TODO(oshima): Implement Observer.
-    return GetDisplayForMonitorNum(screen, primary_monitor_index);
-  }
-
-  virtual void AddObserver(gfx::DisplayObserver* observer) OVERRIDE {
-    // TODO(oshima): crbug.com/122863.
-  }
-
-  virtual void RemoveObserver(gfx::DisplayObserver* observer) OVERRIDE {
-    // TODO(oshima): crbug.com/122863.
-  }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(ScreenGtk);
-};
-
-}  // namespace
-
-namespace gfx {
-
-Screen* CreateNativeScreen() {
-  return new ScreenGtk;
-}
-
-}  // namespace gfx