Full-screen Magnifier: Support warping the cursor on the edge

ui/aura/root_window.cc

Index: ui/aura/root_window.cc
diff --git a/ui/aura/root_window.cc b/ui/aura/root_window.cc
index a78db6983ec2cbbed2f5f74cce4c1f4c988387bc..4a6103b56e6462016f82b1cac6429af5f5b52eab 100644
--- a/ui/aura/root_window.cc
+++ b/ui/aura/root_window.cc
@@ -31,6 +31,7 @@
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/gfx/monitor.h"
+#include "ui/gfx/point3.h"

[sky, 2012/06/11 16:19:14]

remove include.

[yoshiki, 2012/06/19 17:56:16]

Done.

 #include "ui/gfx/screen.h"
 
 using std::vector;
@@ -218,7 +219,9 @@ void RootWindow::ShowCursor(bool show) {
 }
 
 void RootWindow::MoveCursorTo(const gfx::Point& location_in_dip) {
-  host_->MoveCursorTo(ui::ConvertPointToPixel(layer(), location_in_dip));
+  gfx::Point location = location_in_dip;
+  layer()->transform().TransformPoint(location);

[oshima, 2012/06/11 21:48:30]

I look at the code a bit closely and I think what I said was wrong. Sorry about
that. And I found that RWHVA chagne (r117967) was wrong too.
r117967 is wrong because MoveCursorTo takes a ponit coordinate relative to Root,
but OnMouseEvent/LockMouse in RWHVA are using coordinate relative to parent
window (which may not be root). UnlockMouse is using global X/Y from webkit,
which may work for single monitor, but would break for multi monitor.

[yoshiki, 2012/06/19 17:56:16]

Done.

+  host_->MoveCursorTo(ui::ConvertPointToPixel(layer(), location));
 }
 
 bool RootWindow::ConfineCursorToWindow() {