Index: ui/android/resources/nine_patch_resource.cc |
diff --git a/ui/android/resources/nine_patch_resource.cc b/ui/android/resources/nine_patch_resource.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..cf8055dd40c02741cabd49f5f0faecbcc03a2ec9 |
--- /dev/null |
+++ b/ui/android/resources/nine_patch_resource.cc |
@@ -0,0 +1,49 @@ |
+// Copyright 2017 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/android/resources/nine_patch_resource.h" |
+ |
+#include "base/memory/ptr_util.h" |
+ |
+namespace ui { |
+ |
+// static |
+NinePatchResource* NinePatchResource::From(Resource* resource) { |
+ DCHECK_EQ(Type::NINE_PATCH_BITMAP, resource->type()); |
+ return static_cast<NinePatchResource*>(resource); |
+} |
+ |
+NinePatchResource::NinePatchResource(gfx::Rect padding, gfx::Rect aperture) |
+ : Resource(Type::NINE_PATCH_BITMAP), |
+ padding_(padding), |
+ aperture_(aperture) {} |
+ |
+NinePatchResource::~NinePatchResource() = default; |
+ |
+gfx::Rect NinePatchResource::Border(const gfx::Size& bounds) const { |
+ return Border(bounds, gfx::InsetsF(1.f, 1.f, 1.f, 1.f)); |
+} |
+ |
+gfx::Rect NinePatchResource::Border(const gfx::Size& bounds, |
+ const gfx::InsetsF& scale) const { |
+ // Calculate whether or not we need to scale down the border if the bounds of |
+ // the layer are going to be smaller than the aperture padding. |
+ float x_scale = std::min((float)bounds.width() / size().width(), 1.f); |
+ float y_scale = std::min((float)bounds.height() / size().height(), 1.f); |
+ |
+ float left_scale = std::min(x_scale * scale.left(), 1.f); |
+ float right_scale = std::min(x_scale * scale.right(), 1.f); |
+ float top_scale = std::min(y_scale * scale.top(), 1.f); |
+ float bottom_scale = std::min(y_scale * scale.bottom(), 1.f); |
+ |
+ return gfx::Rect(aperture_.x() * left_scale, aperture_.y() * top_scale, |
+ (size().width() - aperture_.width()) * right_scale, |
+ (size().height() - aperture_.height()) * bottom_scale); |
+} |
+ |
+std::unique_ptr<Resource> NinePatchResource::CreateForCopy() { |
+ return base::MakeUnique<NinePatchResource>(padding_, aperture_); |
+} |
+ |
+} // namespace ui |