| // Copyright 2019 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "cobalt/cssom/cobalt_ui_nav_focus_transform_function.h" |
| |
| #include "base/strings/stringprintf.h" |
| #include "cobalt/cssom/transform_function_visitor.h" |
| #include "cobalt/math/matrix_interpolation.h" |
| |
| namespace cobalt { |
| namespace cssom { |
| |
| CobaltUiNavFocusTransformFunction::CobaltUiNavFocusTransformFunction( |
| float x_translation_scale, float y_translation_scale, |
| float progress_to_identity) |
| : x_translation_scale_(x_translation_scale), |
| y_translation_scale_(y_translation_scale), |
| progress_to_identity_(progress_to_identity) { |
| traits_ = kTraitIsDynamic | kTraitUsesUiNavFocus; |
| } |
| |
| void CobaltUiNavFocusTransformFunction::Accept( |
| TransformFunctionVisitor* visitor) const { |
| visitor->VisitCobaltUiNavFocusTransform(this); |
| } |
| |
| std::string CobaltUiNavFocusTransformFunction::ToString() const { |
| return base::StringPrintf("-cobalt-ui-nav-focus-transform(%.7g, %.7g)", |
| x_translation_scale_, y_translation_scale_); |
| } |
| |
| math::Matrix3F CobaltUiNavFocusTransformFunction::ToMatrix( |
| const math::SizeF& used_size, |
| const scoped_refptr<ui_navigation::NavItem>& used_ui_nav_focus) const { |
| ui_navigation::NativeMatrix4 matrix; |
| if (used_ui_nav_focus && used_ui_nav_focus->GetFocusTransform(&matrix)) { |
| return math::InterpolateMatrices( |
| math::Matrix3F::FromValues( |
| // Since the UI is only rendered in 2D, ignore any scaling or |
| // shearing that might be part of a 3D transform. |
| 1.0f, 0.0f, matrix.m[3] * x_translation_scale_, 0.0f, 1.0f, |
| matrix.m[7] * y_translation_scale_, 0.0f, 0.0f, 1.0f), |
| math::Matrix3F::Identity(), progress_to_identity_); |
| } |
| return math::Matrix3F::Identity(); |
| } |
| |
| } // namespace cssom |
| } // namespace cobalt |