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// Copyright (c) 2009 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 "chrome/browser/dock_info.h"
#include <gtk/gtk.h>
#include "app/gfx/native_widget_types.h"
#include "base/logging.h"
#include "base/task.h"
#include "chrome/browser/browser_list.h"
#include "chrome/browser/browser_window.h"
#include "chrome/browser/gtk/browser_window_gtk.h"
#include "chrome/common/gtk_util.h"
////////////////////////////////////////////////////////////////////////////////
// BaseWindowFinder
//
// Base class used to locate a window. A subclass need only override
// ShouldStopIterating to determine when iteration should stop.
class BaseWindowFinder : public x11_util::EnumerateWindowsDelegate {
public:
explicit BaseWindowFinder(const std::set<GtkWidget*>& ignore) {
std::set<GtkWidget*>::iterator iter;
for (iter = ignore.begin(); iter != ignore.end(); iter++) {
XID xid = x11_util::GetX11WindowFromGtkWidget(*iter);
ignore_.insert(xid);
}
}
virtual ~BaseWindowFinder() {}
protected:
// Returns true if |window| is in the ignore list.
bool ShouldIgnoreWindow(XID window) {
return (ignore_.find(window) != ignore_.end());
}
// Returns true if iteration should stop, false otherwise.
virtual bool ShouldStopIterating(XID window) {
return false;
}
private:
std::set<XID> ignore_;
DISALLOW_COPY_AND_ASSIGN(BaseWindowFinder);
};
////////////////////////////////////////////////////////////////////////////////
// TopMostFinder
//
// Helper class to determine if a particular point of a window is not obscured
// by another window.
class TopMostFinder : public BaseWindowFinder {
public:
// Returns true if |window| is not obscured by another window at the
// location |screen_loc|, not including the windows in |ignore|.
static bool IsTopMostWindowAtPoint(XID window,
const gfx::Point& screen_loc,
const std::set<GtkWidget*>& ignore) {
TopMostFinder finder(window, screen_loc, ignore);
return finder.is_top_most_;
}
protected:
virtual bool ShouldStopIterating(XID window) {
if (BaseWindowFinder::ShouldIgnoreWindow(window))
return false;
if (window == target_) {
// Window is topmost, stop iterating.
is_top_most_ = true;
return true;
}
if (!x11_util::IsWindowVisible(window)) {
// The window isn't visible, keep iterating.
return false;
}
gfx::Rect rect;
if (x11_util::GetWindowRect(window, &rect) && rect.Contains(screen_loc_)) {
// At this point we haven't found our target window, so this window is
// higher in the z-order than the target window. If this window contains
// the point, then we can stop the search now because this window is
// obscuring the target window at this point.
return true;
}
return false;
}
private:
TopMostFinder(XID window,
const gfx::Point& screen_loc,
const std::set<GtkWidget*>& ignore)
: BaseWindowFinder(ignore),
target_(window),
screen_loc_(screen_loc),
is_top_most_(false) {
gtk_util::EnumerateTopLevelWindows(this);
}
// The window we're looking for.
XID target_;
// Location of window to find.
gfx::Point screen_loc_;
// Is target_ the top most window? This is initially false but set to true
// in ShouldStopIterating if target_ is passed in.
bool is_top_most_;
DISALLOW_COPY_AND_ASSIGN(TopMostFinder);
};
////////////////////////////////////////////////////////////////////////////////
// LocalProcessWindowFinder
//
// Helper class to determine if a particular point of a window from our process
// is not obscured by another window.
class LocalProcessWindowFinder : public BaseWindowFinder {
public:
// Returns the XID from our process at screen_loc that is not obscured by
// another window. Returns 0 otherwise.
static XID GetProcessWindowAtPoint(const gfx::Point& screen_loc,
const std::set<GtkWidget*>& ignore) {
LocalProcessWindowFinder finder(screen_loc, ignore);
if (finder.result_ &&
TopMostFinder::IsTopMostWindowAtPoint(finder.result_, screen_loc,
ignore)) {
return finder.result_;
}
return 0;
}
protected:
virtual bool ShouldStopIterating(XID window) {
if (BaseWindowFinder::ShouldIgnoreWindow(window))
return false;
// Check if this window is in our process.
if (!BrowserWindowGtk::GetBrowserWindowForXID(window))
return false;
if (!x11_util::IsWindowVisible(window))
return false;
gfx::Rect rect;
if (x11_util::GetWindowRect(window, &rect) && rect.Contains(screen_loc_)) {
result_ = window;
return true;
}
return false;
}
private:
LocalProcessWindowFinder(const gfx::Point& screen_loc,
const std::set<GtkWidget*>& ignore)
: BaseWindowFinder(ignore),
screen_loc_(screen_loc),
result_(0) {
gtk_util::EnumerateTopLevelWindows(this);
}
// Position of the mouse.
gfx::Point screen_loc_;
// The resulting window. This is initially null but set to true in
// ShouldStopIterating if an appropriate window is found.
XID result_;
DISALLOW_COPY_AND_ASSIGN(LocalProcessWindowFinder);
};
// static
DockInfo DockInfo::GetDockInfoAtPoint(const gfx::Point& screen_point,
const std::set<GtkWidget*>& ignore) {
if (factory_)
return factory_->GetDockInfoAtPoint(screen_point, ignore);
NOTIMPLEMENTED();
return DockInfo();
}
// static
GtkWindow* DockInfo::GetLocalProcessWindowAtPoint(
const gfx::Point& screen_point,
const std::set<GtkWidget*>& ignore) {
if (factory_)
return factory_->GetLocalProcessWindowAtPoint(screen_point, ignore);
#if defined(OS_CHROMEOS) || defined(TOOLKIT_VIEWS)
return NULL;
#else
XID xid =
LocalProcessWindowFinder::GetProcessWindowAtPoint(screen_point, ignore);
return BrowserWindowGtk::GetBrowserWindowForXID(xid);
#endif
}
bool DockInfo::GetWindowBounds(gfx::Rect* bounds) const {
if (!window())
return false;
int x, y, w, h;
gtk_window_get_position(window(), &x, &y);
gtk_window_get_size(window(), &w, &h);
bounds->SetRect(x, y, w, h);
return true;
}
void DockInfo::SizeOtherWindowTo(const gfx::Rect& bounds) const {
gtk_window_move(window(), bounds.x(), bounds.y());
gtk_window_resize(window(), bounds.width(), bounds.height());
}
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