1 files changed, 78 insertions, 16 deletions

diff --git a/WebCore/platform/gtk/PlatformScreenGtk.cpp b/WebCore/platform/gtk/PlatformScreenGtk.cpp
index 74c785f..9788253 100644
--- a/WebCore/platform/gtk/PlatformScreenGtk.cpp
+++ b/WebCore/platform/gtk/PlatformScreenGtk.cpp
@@ -1,6 +1,8 @@
 /*
  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
+ * Copyright (C) 2008 Christian Dywan <christian@imendio.com>
+ * Copyright (C) 2008 Collabora Ltd.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -28,44 +30,104 @@
 #include "config.h"
 #include "PlatformScreen.h"
 
+#include "HostWindow.h"
 #include "NotImplemented.h"
+#include "ScrollView.h"
 #include "Widget.h"
 
 #include <gtk/gtk.h>
 
+#if PLATFORM(X11)
+#include <gdk/gdkx.h>
+#include <X11/Xatom.h>
+#endif
+
 namespace WebCore {
 
 int screenDepth(Widget* widget)
 {
-    ASSERT(widget->containingWindow() && GTK_WIDGET(widget->containingWindow())->window);
+    GtkWidget* container = GTK_WIDGET(widget->root()->hostWindow()->platformWindow());
+    if (!container)
+        return 24;
 
-    gint dummy, depth;
-    gdk_window_get_geometry(GTK_WIDGET(widget->containingWindow())->window, &dummy, &dummy, &dummy, &dummy, &depth);
-    return depth;
+    GdkVisual* visual = gdk_drawable_get_visual(GDK_DRAWABLE(GTK_WIDGET(widget->root()->hostWindow()->platformWindow())->window));
+    return visual->depth;
 }
 
-int screenDepthPerComponent(Widget*)
+int screenDepthPerComponent(Widget* widget)
 {
-    notImplemented();
-    return 8;
+    GtkWidget* container = GTK_WIDGET(widget->root()->hostWindow()->platformWindow());
+    if (!container)
+        return 8;
+
+    GdkVisual* visual = gdk_drawable_get_visual(GDK_DRAWABLE(GTK_WIDGET(widget->root()->hostWindow()->platformWindow())->window));
+    return visual->bits_per_rgb;
 }
 
-bool screenIsMonochrome(Widget*)
+bool screenIsMonochrome(Widget* widget)
 {
-    notImplemented();
-    return false;
+    GtkWidget* container = GTK_WIDGET(widget->root()->hostWindow()->platformWindow());
+    if (!container)
+        return false;
+
+    return screenDepth(widget) < 2;
 }
 
-FloatRect screenRect(Widget*)
+FloatRect screenRect(Widget* widget)
 {
-    notImplemented();
-    return FloatRect();
+    GtkWidget* container = GTK_WIDGET(widget->root()->hostWindow()->platformWindow());
+    if (!container)
+        return FloatRect();
+
+    GdkScreen* screen = gtk_widget_has_screen(container) ? gtk_widget_get_screen(container) : gdk_screen_get_default();
+    if (!screen)
+        return FloatRect();
+
+    gint monitor = gdk_screen_get_monitor_at_window(screen, GTK_WIDGET(container)->window);
+    GdkRectangle geometry;
+    gdk_screen_get_monitor_geometry(screen, monitor, &geometry);
+    
+    return FloatRect(geometry.x, geometry.y, geometry.width, geometry.height);
 }
 
-FloatRect screenAvailableRect(Widget*)
+FloatRect screenAvailableRect(Widget* widget)
 {
-    notImplemented();
-    return FloatRect();
+#if PLATFORM(X11)
+    GtkWidget* container = GTK_WIDGET(widget->root()->hostWindow()->platformWindow());
+    if (!container)
+        return FloatRect();
+
+    if (!GTK_WIDGET_REALIZED(container))
+        return screenRect(widget);
+
+    GdkDrawable* rootWindow = GDK_DRAWABLE(gtk_widget_get_root_window(container));
+    GdkDisplay* display = gdk_drawable_get_display(rootWindow);
+    Atom xproperty = gdk_x11_get_xatom_by_name_for_display(display, "_NET_WORKAREA");
+
+    Atom retType;
+    int retFormat;
+    long *workAreaPos = NULL;
+    unsigned long retNItems;
+    unsigned long retAfter;
+    int xRes = XGetWindowProperty(GDK_DISPLAY_XDISPLAY(display), GDK_WINDOW_XWINDOW(rootWindow), xproperty,
+        0, 4, FALSE, XA_CARDINAL, &retType, &retFormat, &retNItems, &retAfter, (guchar**)&workAreaPos);
+
+    FloatRect rect;
+    if (xRes == Success && workAreaPos != NULL && retType == XA_CARDINAL && retNItems == 4 && retFormat == 32) {
+        rect = FloatRect(workAreaPos[0], workAreaPos[1], workAreaPos[2], workAreaPos[3]);
+        // rect contains the available space in the whole screen not just in the monitor
+        // containing the widget, so we intersect it with the monitor rectangle.
+        rect.intersect(screenRect(widget));
+    } else
+        rect = screenRect(widget);
+
+    if (workAreaPos)
+        XFree(workAreaPos);
+
+    return rect;
+#else
+    return screenRect(widget);
+#endif
 }
 
 } // namespace WebCore