| // 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 |