Index: ui/aura/window_tree_host_unittest.cc |
diff --git a/ui/aura/window_tree_host_unittest.cc b/ui/aura/window_tree_host_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3ba26cec00a6438c62e7f64f643bd6d976294d1c |
--- /dev/null |
+++ b/ui/aura/window_tree_host_unittest.cc |
@@ -0,0 +1,42 @@ |
+// Copyright 2016 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 "ui/aura/test/aura_test_base.h" |
+#include "ui/aura/test/test_screen.h" |
+#include "ui/aura/window.h" |
+#include "ui/compositor/layer.h" |
+ |
+namespace aura { |
+ |
+using WindowTreeHostTest = test::AuraTestBase; |
+ |
+TEST_F(WindowTreeHostTest, DPIWindowSize) { |
+ gfx::Rect starting_bounds(0, 0, 800, 600); |
+ EXPECT_EQ(starting_bounds.size(), host()->compositor()->size()); |
+ EXPECT_EQ(starting_bounds, host()->GetBounds()); |
+ EXPECT_EQ(starting_bounds, root_window()->bounds()); |
+ |
+ test_screen()->SetDeviceScaleFactor(1.5f); |
+ EXPECT_EQ(starting_bounds, host()->GetBounds()); |
+ // Size should be rounded up after scaling. |
+ EXPECT_EQ(gfx::Rect(0, 0, 534, 400), root_window()->bounds()); |
+ |
+ gfx::Transform transform; |
+ transform.Translate(0, 1.1f); |
+ host()->SetRootTransform(transform); |
+ EXPECT_EQ(gfx::Rect(0, 1, 534, 401), root_window()->bounds()); |
+ |
+ gfx::Insets padding(1, 2, 3, 4); |
+ // Padding is in physical pixels. |
+ host()->SetOutputSurfacePadding(padding); |
+ gfx::Rect padded_rect = starting_bounds; |
+ padded_rect.Inset(-padding); |
+ EXPECT_EQ(padded_rect.size(), host()->compositor()->size()); |
+ EXPECT_EQ(starting_bounds, host()->GetBounds()); |
+ EXPECT_EQ(gfx::Rect(1, 1, 534, 401), root_window()->bounds()); |
+ EXPECT_EQ(gfx::Vector2dF(0, 0), |
+ host()->compositor()->root_layer()->subpixel_position_offset()); |
+} |
+ |
+} // namespace aura |