This change makes Aura/Views to use DIP, while keeping layer to use Pixels. This allow chrome/ash to run on high density screen in High Density Incompatible mode (everything scaled to 2x), except for web contents.

I put this behind ENABLE_DIP to avoid regression. I'll make it runtime flag next week when we get render working.

BUG=114666
TEST=manual: run with --aura-host-window-size=1000x800*2.

Review URL: https://chromiumcodereview.appspot.com/10081011

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@134391 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 17 insertions, 0 deletions

diff --git a/ui/gfx/rect_base.h b/ui/gfx/rect_base.h
index 3a273fe2..0cb346f 100644
--- a/ui/gfx/rect_base.h
+++ b/ui/gfx/rect_base.h
@@ -64,6 +64,23 @@ class UI_EXPORT RectBase {
     Offset(point.x(), point.y());
   }
 
+  /// Scales the rectangle by |scale|.
+  Class Scale(float scale) const {
+    return Scale(scale, scale);
+  }
+
+  Class Scale(float x_scale, float y_scale) const {
+    return Class(origin_.Scale(x_scale, y_scale),
+                 size_.Scale(x_scale, y_scale));
+  }
+
+  InsetsClass InsetsFrom(const Class& inner) const {
+    return InsetsClass(inner.y() - y(),
+                       inner.x() - x(),
+                       bottom() - inner.bottom(),
+                       right() - inner.right());
+  }
+
   // Returns true if the area of the rectangle is zero.
   bool IsEmpty() const { return size_.IsEmpty(); }