chrome/browser/automation/ui_controls_linux.cc - platform/external/chromium - Git at Google

 // 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/automation/ui_controls.h"

 #include <gtk/gtk.h>
 #include <gdk/gdkkeysyms.h>

 #include "app/event_synthesis_gtk.h"
 #include "gfx/rect.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "chrome/browser/automation/ui_controls_internal.h"
 #include "chrome/browser/gtk/gtk_util.h"
 #include "chrome/common/automation_constants.h"

 #if defined(TOOLKIT_VIEWS)
 #include "views/view.h"
 #include "views/widget/widget.h"
 #endif

 namespace {

 class EventWaiter : public MessageLoopForUI::Observer {
  public:
   EventWaiter(Task* task, GdkEventType type, int count)
       : task_(task),
         type_(type),
         count_(count) {
     MessageLoopForUI::current()->AddObserver(this);
   }

   virtual ~EventWaiter() {
     MessageLoopForUI::current()->RemoveObserver(this);
   }

   // MessageLoop::Observer implementation:
   virtual void WillProcessEvent(GdkEvent* event) {
     if ((event->type == type_) && (--count_ == 0)) {
       // At the time we're invoked the event has not actually been processed.
       // Use PostTask to make sure the event has been processed before
       // notifying.
       // NOTE: if processing a message results in running a nested message
       // loop, then DidProcessEvent isn't immediately sent. As such, we do
       // the processing in WillProcessEvent rather than DidProcessEvent.
       MessageLoop::current()->PostTask(FROM_HERE, task_);
       delete this;
     }
   }

   virtual void DidProcessEvent(GdkEvent* event) {
     // No-op.
   }

  private:
   // We pass ownership of task_ to MessageLoop when the current event is
   // received.
   Task* task_;
   GdkEventType type_;
   // The number of events of this type to wait for.
   int count_;
 };

 void FakeAMouseMotionEvent(gint x, gint y) {
   GdkEvent* event = gdk_event_new(GDK_MOTION_NOTIFY);

   event->motion.send_event = false;
   event->motion.time = gtk_util::XTimeNow();

   GtkWidget* grab_widget = gtk_grab_get_current();
   if (grab_widget) {
     // If there is a grab, we need to target all events at it regardless of
     // what widget the mouse is over.
     event->motion.window = grab_widget->window;
   } else {
     event->motion.window = gdk_window_at_pointer(&x, &y);
   }
   g_object_ref(event->motion.window);
   event->motion.x = x;
   event->motion.y = y;
   gint origin_x, origin_y;
   gdk_window_get_origin(event->motion.window, &origin_x, &origin_y);
   event->motion.x_root = x + origin_x;
   event->motion.y_root = y + origin_y;

   event->motion.device = gdk_device_get_core_pointer();
   event->type = GDK_MOTION_NOTIFY;

   gdk_event_put(event);
   gdk_event_free(event);
 }

 }  // namespace

 namespace ui_controls {

 bool SendKeyPress(gfx::NativeWindow window,
                   app::KeyboardCode key,
                   bool control, bool shift, bool alt, bool command) {
   DCHECK(command == false);  // No command key on Linux
   GdkWindow* event_window = NULL;
   GtkWidget* grab_widget = gtk_grab_get_current();
   if (grab_widget) {
     // If there is a grab, send all events to the grabbed widget.
     event_window = grab_widget->window;
   } else if (window) {
     event_window = GTK_WIDGET(window)->window;
   } else {
     // No target was specified. Send the events to the active toplevel.
     GList* windows = gtk_window_list_toplevels();
     for (GList* element = windows; element; element = g_list_next(element)) {
       GtkWindow* this_window = GTK_WINDOW(element->data);
       if (gtk_window_is_active(this_window)) {
         event_window = GTK_WIDGET(this_window)->window;
         break;
       }
     }
     g_list_free(windows);
   }
   if (!event_window) {
     NOTREACHED() << "Window not specified and none is active";
     return false;
   }

   std::vector<GdkEvent*> events;
   app::SynthesizeKeyPressEvents(event_window, key, control, shift, alt,
                                  &events);
   for (std::vector<GdkEvent*>::iterator iter = events.begin();
        iter != events.end(); ++iter) {
     gdk_event_put(*iter);
     // gdk_event_put appends a copy of the event.
     gdk_event_free(*iter);
   }

   return true;
 }

 bool SendKeyPressNotifyWhenDone(gfx::NativeWindow window,
                                 app::KeyboardCode key,
                                 bool control, bool shift,
                                 bool alt, bool command,
                                 Task* task) {
   DCHECK(command == false);  // No command key on Linux
   int release_count = 1;
   if (control)
     release_count++;
   if (shift)
     release_count++;
   if (alt)
     release_count++;
   // This object will delete itself after running |task|.
   new EventWaiter(task, GDK_KEY_RELEASE, release_count);
   return SendKeyPress(window, key, control, shift, alt, command);
 }

 bool SendMouseMove(long x, long y) {
   gdk_display_warp_pointer(gdk_display_get_default(), gdk_screen_get_default(),
                            x, y);
   // Sometimes gdk_display_warp_pointer fails to send back any indication of
   // the move, even though it succesfully moves the server cursor. We fake it in
   // order to get drags to work.
   FakeAMouseMotionEvent(x, y);

   return true;
 }

 bool SendMouseMoveNotifyWhenDone(long x, long y, Task* task) {
   bool rv = SendMouseMove(x, y);
   // We can't rely on any particular event signalling the completion of the
   // mouse move. Posting the task to the message loop hopefully guarantees
   // the pointer has moved before task is run (although it may not run it as
   // soon as it could).
   MessageLoop::current()->PostTask(FROM_HERE, task);
   return rv;
 }

 bool SendMouseEvents(MouseButton type, int state) {
   GdkEvent* event = gdk_event_new(GDK_BUTTON_PRESS);

   event->button.send_event = false;
   event->button.time = gtk_util::XTimeNow();

   gint x, y;
   GtkWidget* grab_widget = gtk_grab_get_current();
   if (grab_widget) {
     // If there is a grab, we need to target all events at it regardless of
     // what widget the mouse is over.
     event->button.window = grab_widget->window;
     gdk_window_get_pointer(event->button.window, &x, &y, NULL);
   } else {
     event->button.window = gdk_window_at_pointer(&x, &y);
   }

   g_object_ref(event->button.window);
   event->button.x = x;
   event->button.y = y;
   gint origin_x, origin_y;
   gdk_window_get_origin(event->button.window, &origin_x, &origin_y);
   event->button.x_root = x + origin_x;
   event->button.y_root = y + origin_y;

   event->button.axes = NULL;
   GdkModifierType modifier;
   gdk_window_get_pointer(event->button.window, NULL, NULL, &modifier);
   event->button.state = modifier;
   event->button.button = type == LEFT ? 1 : (type == MIDDLE ? 2 : 3);
   event->button.device = gdk_device_get_core_pointer();

   event->button.type = GDK_BUTTON_PRESS;
   if (state & DOWN)
     gdk_event_put(event);

   // Also send a release event.
   GdkEvent* release_event = gdk_event_copy(event);
   release_event->button.type = GDK_BUTTON_RELEASE;
   release_event->button.time++;
   if (state & UP)
     gdk_event_put(release_event);

   gdk_event_free(event);
   gdk_event_free(release_event);

   return false;
 }

 bool SendMouseEventsNotifyWhenDone(MouseButton type, int state, Task* task) {
   bool rv = SendMouseEvents(type, state);
   GdkEventType wait_type;
   if (state & UP) {
     wait_type = GDK_BUTTON_RELEASE;
   } else {
     if (type == LEFT)
       wait_type = GDK_BUTTON_PRESS;
     else if (type == MIDDLE)
       wait_type = GDK_2BUTTON_PRESS;
     else
       wait_type = GDK_3BUTTON_PRESS;
   }
   new EventWaiter(task, wait_type, 1);
   return rv;
 }

 bool SendMouseClick(MouseButton type) {
   return SendMouseEvents(type, UP | DOWN);
 }

 #if defined(TOOLKIT_VIEWS)
 void MoveMouseToCenterAndPress(views::View* view, MouseButton button,
                                int state, Task* task) {
   gfx::Point view_center(view->width() / 2, view->height() / 2);
   views::View::ConvertPointToScreen(view, &view_center);
   SendMouseMoveNotifyWhenDone(view_center.x(), view_center.y(),
                               new ClickTask(button, state, task));
 }
 #else
 void MoveMouseToCenterAndPress(GtkWidget* widget,
                                MouseButton button,
                                int state,
                                Task* task) {
   gfx::Rect bounds = gtk_util::GetWidgetScreenBounds(widget);
   SendMouseMoveNotifyWhenDone(bounds.x() + bounds.width() / 2,
                               bounds.y() + bounds.height() / 2,
                               new ClickTask(button, state, task));
 }
 #endif

 }  // namespace ui_controls
	// 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/automation/ui_controls.h"

	#include <gtk/gtk.h>
	#include <gdk/gdkkeysyms.h>

	#include "app/event_synthesis_gtk.h"
	#include "gfx/rect.h"
	#include "base/logging.h"
	#include "base/message_loop.h"
	#include "chrome/browser/automation/ui_controls_internal.h"
	#include "chrome/browser/gtk/gtk_util.h"
	#include "chrome/common/automation_constants.h"

	#if defined(TOOLKIT_VIEWS)
	#include "views/view.h"
	#include "views/widget/widget.h"
	#endif

	namespace {

	class EventWaiter : public MessageLoopForUI::Observer {
	public:
	EventWaiter(Task* task, GdkEventType type, int count)
	: task_(task),
	type_(type),
	count_(count) {
	MessageLoopForUI::current()->AddObserver(this);
	}

	virtual ~EventWaiter() {
	MessageLoopForUI::current()->RemoveObserver(this);
	}

	// MessageLoop::Observer implementation:
	virtual void WillProcessEvent(GdkEvent* event) {
	if ((event->type == type_) && (--count_ == 0)) {
	// At the time we're invoked the event has not actually been processed.
	// Use PostTask to make sure the event has been processed before
	// notifying.
	// NOTE: if processing a message results in running a nested message
	// loop, then DidProcessEvent isn't immediately sent. As such, we do
	// the processing in WillProcessEvent rather than DidProcessEvent.
	MessageLoop::current()->PostTask(FROM_HERE, task_);
	delete this;
	}
	}

	virtual void DidProcessEvent(GdkEvent* event) {
	// No-op.
	}

	private:
	// We pass ownership of task_ to MessageLoop when the current event is
	// received.
	Task* task_;
	GdkEventType type_;
	// The number of events of this type to wait for.
	int count_;
	};

	void FakeAMouseMotionEvent(gint x, gint y) {
	GdkEvent* event = gdk_event_new(GDK_MOTION_NOTIFY);

	event->motion.send_event = false;
	event->motion.time = gtk_util::XTimeNow();

	GtkWidget* grab_widget = gtk_grab_get_current();
	if (grab_widget) {
	// If there is a grab, we need to target all events at it regardless of
	// what widget the mouse is over.
	event->motion.window = grab_widget->window;
	} else {
	event->motion.window = gdk_window_at_pointer(&x, &y);
	}
	g_object_ref(event->motion.window);
	event->motion.x = x;
	event->motion.y = y;
	gint origin_x, origin_y;
	gdk_window_get_origin(event->motion.window, &origin_x, &origin_y);
	event->motion.x_root = x + origin_x;
	event->motion.y_root = y + origin_y;

	event->motion.device = gdk_device_get_core_pointer();
	event->type = GDK_MOTION_NOTIFY;

	gdk_event_put(event);
	gdk_event_free(event);
	}

	} // namespace

	namespace ui_controls {

	bool SendKeyPress(gfx::NativeWindow window,
	app::KeyboardCode key,
	bool control, bool shift, bool alt, bool command) {
	DCHECK(command == false); // No command key on Linux
	GdkWindow* event_window = NULL;
	GtkWidget* grab_widget = gtk_grab_get_current();
	if (grab_widget) {
	// If there is a grab, send all events to the grabbed widget.
	event_window = grab_widget->window;
	} else if (window) {
	event_window = GTK_WIDGET(window)->window;
	} else {
	// No target was specified. Send the events to the active toplevel.
	GList* windows = gtk_window_list_toplevels();
	for (GList* element = windows; element; element = g_list_next(element)) {
	GtkWindow* this_window = GTK_WINDOW(element->data);
	if (gtk_window_is_active(this_window)) {
	event_window = GTK_WIDGET(this_window)->window;
	break;
	}
	}
	g_list_free(windows);
	}
	if (!event_window) {
	NOTREACHED() << "Window not specified and none is active";
	return false;
	}

	std::vector<GdkEvent*> events;
	app::SynthesizeKeyPressEvents(event_window, key, control, shift, alt,
	&events);
	for (std::vector<GdkEvent*>::iterator iter = events.begin();
	iter != events.end(); ++iter) {
	gdk_event_put(*iter);
	// gdk_event_put appends a copy of the event.
	gdk_event_free(*iter);
	}

	return true;
	}

	bool SendKeyPressNotifyWhenDone(gfx::NativeWindow window,
	app::KeyboardCode key,
	bool control, bool shift,
	bool alt, bool command,
	Task* task) {
	DCHECK(command == false); // No command key on Linux
	int release_count = 1;
	if (control)
	release_count++;
	if (shift)
	release_count++;
	if (alt)
	release_count++;
	// This object will delete itself after running \|task\|.
	new EventWaiter(task, GDK_KEY_RELEASE, release_count);
	return SendKeyPress(window, key, control, shift, alt, command);
	}

	bool SendMouseMove(long x, long y) {
	gdk_display_warp_pointer(gdk_display_get_default(), gdk_screen_get_default(),
	x, y);
	// Sometimes gdk_display_warp_pointer fails to send back any indication of
	// the move, even though it succesfully moves the server cursor. We fake it in
	// order to get drags to work.
	FakeAMouseMotionEvent(x, y);

	return true;
	}

	bool SendMouseMoveNotifyWhenDone(long x, long y, Task* task) {
	bool rv = SendMouseMove(x, y);
	// We can't rely on any particular event signalling the completion of the
	// mouse move. Posting the task to the message loop hopefully guarantees
	// the pointer has moved before task is run (although it may not run it as
	// soon as it could).
	MessageLoop::current()->PostTask(FROM_HERE, task);
	return rv;
	}

	bool SendMouseEvents(MouseButton type, int state) {
	GdkEvent* event = gdk_event_new(GDK_BUTTON_PRESS);

	event->button.send_event = false;
	event->button.time = gtk_util::XTimeNow();

	gint x, y;
	GtkWidget* grab_widget = gtk_grab_get_current();
	if (grab_widget) {
	// If there is a grab, we need to target all events at it regardless of
	// what widget the mouse is over.
	event->button.window = grab_widget->window;
	gdk_window_get_pointer(event->button.window, &x, &y, NULL);
	} else {
	event->button.window = gdk_window_at_pointer(&x, &y);
	}

	g_object_ref(event->button.window);
	event->button.x = x;
	event->button.y = y;
	gint origin_x, origin_y;
	gdk_window_get_origin(event->button.window, &origin_x, &origin_y);
	event->button.x_root = x + origin_x;
	event->button.y_root = y + origin_y;

	event->button.axes = NULL;
	GdkModifierType modifier;
	gdk_window_get_pointer(event->button.window, NULL, NULL, &modifier);
	event->button.state = modifier;
	event->button.button = type == LEFT ? 1 : (type == MIDDLE ? 2 : 3);
	event->button.device = gdk_device_get_core_pointer();

	event->button.type = GDK_BUTTON_PRESS;
	if (state & DOWN)
	gdk_event_put(event);

	// Also send a release event.
	GdkEvent* release_event = gdk_event_copy(event);
	release_event->button.type = GDK_BUTTON_RELEASE;
	release_event->button.time++;
	if (state & UP)
	gdk_event_put(release_event);

	gdk_event_free(event);
	gdk_event_free(release_event);

	return false;
	}

	bool SendMouseEventsNotifyWhenDone(MouseButton type, int state, Task* task) {
	bool rv = SendMouseEvents(type, state);
	GdkEventType wait_type;
	if (state & UP) {
	wait_type = GDK_BUTTON_RELEASE;
	} else {
	if (type == LEFT)
	wait_type = GDK_BUTTON_PRESS;
	else if (type == MIDDLE)
	wait_type = GDK_2BUTTON_PRESS;
	else
	wait_type = GDK_3BUTTON_PRESS;
	}
	new EventWaiter(task, wait_type, 1);
	return rv;
	}

	bool SendMouseClick(MouseButton type) {
	return SendMouseEvents(type, UP \| DOWN);
	}

	#if defined(TOOLKIT_VIEWS)
	void MoveMouseToCenterAndPress(views::View* view, MouseButton button,
	int state, Task* task) {
	gfx::Point view_center(view->width() / 2, view->height() / 2);
	views::View::ConvertPointToScreen(view, &view_center);
	SendMouseMoveNotifyWhenDone(view_center.x(), view_center.y(),
	new ClickTask(button, state, task));
	}
	#else
	void MoveMouseToCenterAndPress(GtkWidget* widget,
	MouseButton button,
	int state,
	Task* task) {
	gfx::Rect bounds = gtk_util::GetWidgetScreenBounds(widget);
	SendMouseMoveNotifyWhenDone(bounds.x() + bounds.width() / 2,
	bounds.y() + bounds.height() / 2,
	new ClickTask(button, state, task));
	}
	#endif

	} // namespace ui_controls