Move HiDPI-related Pepper interfaces to stable

ppapi/tests/test_graphics_2d.cc

 // Copyright (c) 2012 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 "ppapi/tests/test_graphics_2d.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include <set>
@@ skipping 41 matching lines @@
   return graphics_2d_interface_ && image_data_interface_ &&
          CheckTestingInterface();
 }
 
 void TestGraphics2D::RunTests(const std::string& filter) {
   RUN_TEST(InvalidResource, filter);
   RUN_TEST(InvalidSize, filter);
   RUN_TEST(Humongous, filter);
   RUN_TEST(InitToZero, filter);
   RUN_TEST(Describe, filter);
+  RUN_TEST(Scale, filter);
   RUN_TEST_FORCEASYNC_AND_NOT(Paint, filter);
   RUN_TEST_FORCEASYNC_AND_NOT(Scroll, filter);
   RUN_TEST_FORCEASYNC_AND_NOT(Replace, filter);
   RUN_TEST_FORCEASYNC_AND_NOT(Flush, filter);
   RUN_TEST_FORCEASYNC_AND_NOT(FlushOffscreenUpdate, filter);
   RUN_TEST(Dev, filter);
   RUN_TEST(ReplaceContentsCaching, filter);
   RUN_TEST(BindNull, filter);
 }
 
@@ skipping 290 matching lines @@
   if (!graphics_2d_interface_->Describe(dc.pp_resource(), &size,
                                         &is_always_opaque))
     return "Describe failed";
   if (size.width != w || size.height != h ||
       is_always_opaque != PP_FromBool(always_opaque))
     return "Mismatch of data.";
 
   PASS();
 }
 
+std::string TestGraphics2D::TestScale() {
+  // Tests GetScale/SetScale
+  const int w = 20, h = 16;
+  const float scale = 1.0f/2.0f;
+  pp::Graphics2D dc(instance_, pp::Size(w, h), false);
+  if (dc.is_null())
+    return "Failure creating a boring device";
+  if (dc.GetScale() != 1.0f)
+    return "GetScale returned unexpected value before SetScale";
+  if (!dc.SetScale(scale))
+    return "SetScale failed";
+  if (dc.GetScale() != scale)
+    return "GetScale mismatch with prior SetScale";
+  // Try setting a few invalid scale factors. Ensure that we catch these errors
+  // and don't change the actual scale
+  if (dc.SetScale(-1.0f))
+    return "SetScale(-1f) did not fail";
+  if (dc.SetScale(0.0f))
+    return "SetScale(0.0f) did not fail";
+  if (dc.GetScale() != scale)
+    return "SetScale with invalid parameter overwrote the scale";
+
+  // Verify that the context has the specified number of pixels, despite the
+  // non-identity scale
+  PP_Size size;
+  size.width = -1;
+  size.height = -1;
+  PP_Bool is_always_opaque = PP_FALSE;
+  if (!graphics_2d_interface_->Describe(dc.pp_resource(), &size,
+                                        &is_always_opaque))
+    return "Describe failed";
+  if (size.width != w || size.height != h ||
+      is_always_opaque != PP_FromBool(false))
+    return "Mismatch of data.";
+
+  PASS();
+}
+
 std::string TestGraphics2D::TestPaint() {
   const int w = 15, h = 17;
   pp::Graphics2D dc(instance_, pp::Size(w, h), false);
   if (dc.is_null())
     return "Failure creating a boring device";
 
   // Make sure the device background is 0.
   if (!IsDCUniformColor(dc, 0))
     return "Bad initial color";
 
@@ skipping 484 matching lines @@
     return "Failure creating device.";
   if (!instance_->BindGraphics(dc))
     return "Failure to bind the boring device.";
 
   ASSERT_TRUE(instance_->BindGraphics(pp::Graphics2D()));
   ASSERT_TRUE(instance_->BindGraphics(pp::Graphics3D()));
 
   PASS();
 }