Remove dependency from webkit on chrome/common by moving files to src/app.

BUG=37985
TEST=no functional change.
Review URL: http://codereview.chromium.org/1060001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42101 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 173 insertions, 0 deletions

diff --git a/app/x11_util.h b/app/x11_util.h
new file mode 100644
index 0000000..1c8685f1
--- /dev/null
+++ b/app/x11_util.h
@@ -0,0 +1,173 @@
+// Copyright (c) 2010 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.
+
+#ifndef APP_X11_UTIL_H_
+#define APP_X11_UTIL_H_
+
+// This file declares utility functions for X11 (Linux only).
+//
+// These functions do not require the Xlib headers to be included (which is why
+// we use a void* for Visual*). The Xlib headers are highly polluting so we try
+// hard to limit their spread into the rest of the code.
+
+#include <string>
+#include <vector>
+
+#include "base/task.h"
+#include "gfx/rect.h"
+
+typedef struct _GdkDrawable GdkWindow;
+typedef struct _GtkWidget GtkWidget;
+typedef struct _GtkWindow GtkWindow;
+typedef unsigned long XID;
+typedef unsigned long XSharedMemoryId;  // ShmSeg in the X headers.
+typedef struct _XDisplay Display;
+
+namespace base {
+class Thread;
+}
+
+namespace gfx {
+class Size;
+}
+
+namespace x11_util {
+
+// These functions use the GDK default display and this /must/ be called from
+// the UI thread. Thus, they don't support multiple displays.
+
+// These functions cache their results ---------------------------------
+
+// Check if there's an open connection to an X server.
+bool XDisplayExists();
+// Return an X11 connection for the current, primary display.
+Display* GetXDisplay();
+
+// X shared memory comes in three flavors:
+// 1) No SHM support,
+// 2) SHM putimage,
+// 3) SHM pixmaps + putimage.
+enum SharedMemorySupport {
+  SHARED_MEMORY_NONE,
+  SHARED_MEMORY_PUTIMAGE,
+  SHARED_MEMORY_PIXMAP
+};
+// Return the shared memory type of our X connection.
+SharedMemorySupport QuerySharedMemorySupport(Display* dpy);
+
+// Return true iff the display supports Xrender
+bool QueryRenderSupport(Display* dpy);
+
+// Return the default screen number for the display
+int GetDefaultScreen(Display* display);
+
+// These functions do not cache their results --------------------------
+
+// Get the X window id for the default root window
+XID GetX11RootWindow();
+// Get the X window id for the given GTK widget.
+XID GetX11WindowFromGtkWidget(GtkWidget* widget);
+XID GetX11WindowFromGdkWindow(GdkWindow* window);
+// Get a Visual from the given widget. Since we don't include the Xlib
+// headers, this is returned as a void*.
+void* GetVisualFromGtkWidget(GtkWidget* widget);
+// Return the number of bits-per-pixel for a pixmap of the given depth
+int BitsPerPixelForPixmapDepth(Display* display, int depth);
+// Returns true if |window| is visible.
+bool IsWindowVisible(XID window);
+// Returns the bounds of |window|.
+bool GetWindowRect(XID window, gfx::Rect* rect);
+// Get the value of an int or string property.  On success, true is returned and
+// the value is stored in |value|.
+bool GetIntProperty(XID window, const std::string& property_name, int* value);
+bool GetStringProperty(
+    XID window, const std::string& property_name, std::string* value);
+
+// Get |window|'s parent window, or None if |window| is the root window.
+XID GetParentWindow(XID window);
+
+// Walk up |window|'s hierarchy until we find a direct child of |root|.
+XID GetHighestAncestorWindow(XID window, XID root);
+
+// Implementers of this interface receive a notification for every X window of
+// the main display.
+class EnumerateWindowsDelegate {
+ public:
+  // |xid| is the X Window ID of the enumerated window.  Return true to stop
+  // further iteration.
+  virtual bool ShouldStopIterating(XID xid) = 0;
+
+ protected:
+  virtual ~EnumerateWindowsDelegate() {}
+};
+
+// Enumerates all windows in the current display.  Will recurse into child
+// windows up to a depth of |max_depth|.
+bool EnumerateAllWindows(EnumerateWindowsDelegate* delegate, int max_depth);
+
+// Returns a list of top-level windows in top-to-bottom stacking order.
+bool GetXWindowStack(std::vector<XID>* windows);
+
+// Restack a window in relation to one of its siblings.  If |above| is true,
+// |window| will be stacked directly above |sibling|; otherwise it will stacked
+// directly below it.  Both windows must be immediate children of the same
+// window.
+void RestackWindow(XID window, XID sibling, bool above);
+
+// Return a handle to a X ShmSeg. |shared_memory_key| is a SysV
+// IPC key. The shared memory region must contain 32-bit pixels.
+XSharedMemoryId AttachSharedMemory(Display* display, int shared_memory_support);
+void DetachSharedMemory(Display* display, XSharedMemoryId shmseg);
+
+// Return a handle to an XRender picture where |pixmap| is a handle to a
+// pixmap containing Skia ARGB data.
+XID CreatePictureFromSkiaPixmap(Display* display, XID pixmap);
+
+// Draws ARGB data on the given pixmap using the given GC, converting to the
+// server side visual depth as needed.  Destination is assumed to be the same
+// dimensions as |data| or larger.  |data| is also assumed to be in row order
+// with each line being exactly |width| * 4 bytes long.
+void PutARGBImage(Display* display, void* visual, int depth, XID pixmap,
+                  void* pixmap_gc, const uint8* data, int width, int height);
+
+void FreePicture(Display* display, XID picture);
+void FreePixmap(Display* display, XID pixmap);
+
+// These functions are for performing X opertions outside of the UI thread.
+
+// Return the Display for the secondary X connection. We keep a second
+// connection around for making X requests outside of the UI thread.
+// This function may only be called from the BACKGROUND_X11 thread.
+Display* GetSecondaryDisplay();
+
+// Since one cannot include both WebKit header and Xlib headers in the same
+// file (due to collisions), we wrap all the Xlib functions that we need here.
+// These functions must be called on the BACKGROUND_X11 thread since they
+// reference GetSecondaryDisplay().
+
+// Get the position of the given window in screen coordinates as well as its
+// current size.
+bool GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height,
+                       XID window);
+
+// Find the immediate parent of an X window.
+//
+// parent_window: (output) the parent window of |window|, or 0.
+// parent_is_root: (output) true iff the parent of |window| is the root window.
+bool GetWindowParent(XID* parent_window, bool* parent_is_root, XID window);
+
+// Get the window manager name.
+bool GetWindowManagerName(std::string* name);
+
+// Grabs a snapshot of the designated window and stores a PNG representation
+// into a byte vector.
+void GrabWindowSnapshot(GtkWindow* gdk_window,
+                        std::vector<unsigned char>* png_representation);
+
+// Change desktop for |window| to the desktop of |destination| window.
+bool ChangeWindowDesktop(XID window, XID destination);
+
+}  // namespace x11_util
+
+#endif  // APP_X11_UTIL_H_