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| 1 // Copyright (c) 2009 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/window_sizer.h" | |
| 6 | |
| 7 #include <gtk/gtk.h> | |
| 8 | |
| 9 #include "base/logging.h" | |
| 10 #include "chrome/browser/browser_list.h" | |
| 11 #include "chrome/browser/browser_window.h" | |
| 12 #include "chrome/browser/ui/browser.h" | |
| 13 | |
| 14 // Used to pad the default new window size. On Windows, this is also used for | |
| 15 // positioning new windows (each window is offset from the previous one). | |
| 16 // Since we don't position windows, it's only used for the default new window | |
| 17 // size. | |
| 18 const int WindowSizer::kWindowTilePixels = 10; | |
| 19 | |
| 20 // An implementation of WindowSizer::MonitorInfoProvider that gets the actual | |
| 21 // monitor information from X via GDK. | |
| 22 class DefaultMonitorInfoProvider : public WindowSizer::MonitorInfoProvider { | |
| 23 public: | |
| 24 DefaultMonitorInfoProvider() { } | |
| 25 | |
| 26 virtual gfx::Rect GetPrimaryMonitorWorkArea() const { | |
| 27 gfx::Rect rect; | |
| 28 if (GetScreenWorkArea(&rect)) | |
| 29 return rect.Intersect(GetPrimaryMonitorBounds()); | |
| 30 | |
| 31 // Return the best we've got. | |
| 32 return GetPrimaryMonitorBounds(); | |
| 33 } | |
| 34 | |
| 35 virtual gfx::Rect GetPrimaryMonitorBounds() const { | |
| 36 GdkScreen* screen = gdk_screen_get_default(); | |
| 37 GdkRectangle rect; | |
| 38 gdk_screen_get_monitor_geometry(screen, 0, &rect); | |
| 39 return gfx::Rect(rect); | |
| 40 } | |
| 41 | |
| 42 virtual gfx::Rect GetMonitorWorkAreaMatching( | |
| 43 const gfx::Rect& match_rect) const { | |
| 44 // TODO(thestig) Implement multi-monitor support. | |
| 45 return GetPrimaryMonitorWorkArea(); | |
| 46 } | |
| 47 | |
| 48 virtual gfx::Point GetBoundsOffsetMatching( | |
| 49 const gfx::Rect& match_rect) const { | |
| 50 // TODO(thestig) Implement multi-monitor support. | |
| 51 return GetPrimaryMonitorWorkArea().origin(); | |
| 52 } | |
| 53 | |
| 54 void UpdateWorkAreas() { | |
| 55 // TODO(thestig) Implement multi-monitor support. | |
| 56 work_areas_.clear(); | |
| 57 work_areas_.push_back(GetPrimaryMonitorBounds()); | |
| 58 } | |
| 59 | |
| 60 private: | |
| 61 // Get the available screen space as a gfx::Rect, or return false if | |
| 62 // if it's unavailable (i.e. the window manager doesn't support | |
| 63 // retrieving this). | |
| 64 // TODO(thestig) Use _NET_CURRENT_DESKTOP here as well? | |
| 65 bool GetScreenWorkArea(gfx::Rect* out_rect) const { | |
| 66 gboolean ok; | |
| 67 guchar* raw_data = NULL; | |
| 68 gint data_len = 0; | |
| 69 ok = gdk_property_get(gdk_get_default_root_window(), // a gdk window | |
| 70 gdk_atom_intern("_NET_WORKAREA", FALSE), // property | |
| 71 gdk_atom_intern("CARDINAL", FALSE), // property type | |
| 72 0, // byte offset into property | |
| 73 0xff, // property length to retrieve | |
| 74 false, // delete property after retrieval? | |
| 75 NULL, // returned property type | |
| 76 NULL, // returned data format | |
| 77 &data_len, // returned data len | |
| 78 &raw_data); // returned data | |
| 79 if (!ok) | |
| 80 return false; | |
| 81 | |
| 82 // We expect to get four longs back: x, y, width, height. | |
| 83 if (data_len < static_cast<gint>(4 * sizeof(glong))) { | |
| 84 NOTREACHED(); | |
| 85 g_free(raw_data); | |
| 86 return false; | |
| 87 } | |
| 88 | |
| 89 glong* data = reinterpret_cast<glong*>(raw_data); | |
| 90 gint x = data[0]; | |
| 91 gint y = data[1]; | |
| 92 gint width = data[2]; | |
| 93 gint height = data[3]; | |
| 94 g_free(raw_data); | |
| 95 | |
| 96 out_rect->SetRect(x, y, width, height); | |
| 97 return true; | |
| 98 } | |
| 99 | |
| 100 DISALLOW_COPY_AND_ASSIGN(DefaultMonitorInfoProvider); | |
| 101 }; | |
| 102 | |
| 103 // static | |
| 104 WindowSizer::MonitorInfoProvider* | |
| 105 WindowSizer::CreateDefaultMonitorInfoProvider() { | |
| 106 return new DefaultMonitorInfoProvider(); | |
| 107 } | |
| 108 | |
| 109 // static | |
| 110 gfx::Point WindowSizer::GetDefaultPopupOrigin(const gfx::Size& size) { | |
| 111 scoped_ptr<MonitorInfoProvider> provider(CreateDefaultMonitorInfoProvider()); | |
| 112 gfx::Rect monitor_bounds = provider->GetPrimaryMonitorWorkArea(); | |
| 113 gfx::Point corner(monitor_bounds.x(), monitor_bounds.y()); | |
| 114 if (Browser* browser = BrowserList::GetLastActive()) { | |
| 115 GtkWindow* window = | |
| 116 reinterpret_cast<GtkWindow*>(browser->window()->GetNativeHandle()); | |
| 117 int x = 0, y = 0; | |
| 118 gtk_window_get_position(window, &x, &y); | |
| 119 // Limit to not overflow the work area right and bottom edges. | |
| 120 gfx::Point limit( | |
| 121 std::min(x + kWindowTilePixels, monitor_bounds.right() - size.width()), | |
| 122 std::min(y + kWindowTilePixels, | |
| 123 monitor_bounds.bottom() - size.height())); | |
| 124 // Adjust corner to now overflow the work area left and top edges, so | |
| 125 // that if a popup does not fit the title-bar is remains visible. | |
| 126 corner = gfx::Point( | |
| 127 std::max(corner.x(), limit.x()), | |
| 128 std::max(corner.y(), limit.y())); | |
| 129 } | |
| 130 return corner; | |
| 131 } | |
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