| // Copyright 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 "cc/layers/nine_patch_layer_impl.h" |
| |
| #include "base/strings/stringprintf.h" |
| #include "base/values.h" |
| #include "cc/base/math_util.h" |
| #include "cc/quads/texture_draw_quad.h" |
| #include "cc/trees/layer_tree_impl.h" |
| #include "cc/trees/occlusion.h" |
| #include "ui/gfx/geometry/rect_f.h" |
| |
| namespace cc { |
| |
| // Maximum number of patches that can be produced for one NinePatchLayer. |
| static const int kMaxOcclusionPatches = 12; |
| static const int kMaxPatches = 9; |
| |
| namespace { |
| |
| gfx::Rect ToRect(const gfx::RectF& rect) { |
| return gfx::Rect(rect.x(), rect.y(), rect.width(), rect.height()); |
| } |
| |
| } // namespace |
| |
| NinePatchLayerImpl::Patch::Patch(const gfx::RectF& image_rect, |
| const gfx::RectF& layer_rect) |
| : image_rect(image_rect), layer_rect(layer_rect) {} |
| |
| NinePatchLayerImpl::NinePatchLayerImpl(LayerTreeImpl* tree_impl, int id) |
| : UIResourceLayerImpl(tree_impl, id), |
| fill_center_(false), |
| nearest_neighbor_(false) {} |
| |
| NinePatchLayerImpl::~NinePatchLayerImpl() {} |
| |
| std::unique_ptr<LayerImpl> NinePatchLayerImpl::CreateLayerImpl( |
| LayerTreeImpl* tree_impl) { |
| return NinePatchLayerImpl::Create(tree_impl, id()); |
| } |
| |
| void NinePatchLayerImpl::PushPropertiesTo(LayerImpl* layer) { |
| UIResourceLayerImpl::PushPropertiesTo(layer); |
| NinePatchLayerImpl* layer_impl = static_cast<NinePatchLayerImpl*>(layer); |
| |
| layer_impl->SetLayout(image_aperture_, border_, layer_occlusion_, |
| fill_center_, nearest_neighbor_); |
| } |
| |
| static gfx::RectF BoundsToRect(int x1, int y1, int x2, int y2) { |
| return gfx::RectF(x1, y1, x2 - x1, y2 - y1); |
| } |
| |
| static gfx::RectF NormalizedRect(const gfx::RectF& rect, |
| float total_width, |
| float total_height) { |
| return gfx::RectF(rect.x() / total_width, rect.y() / total_height, |
| rect.width() / total_width, rect.height() / total_height); |
| } |
| |
| void NinePatchLayerImpl::SetLayout(const gfx::Rect& aperture, |
| const gfx::Rect& border, |
| const gfx::Rect& layer_occlusion, |
| bool fill_center, |
| bool nearest_neighbor) { |
| // This check imposes an ordering on the call sequence. An UIResource must |
| // exist before SetLayout can be called. |
| DCHECK(ui_resource_id_); |
| |
| if (image_aperture_ == aperture && border_ == border && |
| fill_center_ == fill_center && nearest_neighbor_ == nearest_neighbor && |
| layer_occlusion_ == layer_occlusion) |
| return; |
| |
| image_aperture_ = aperture; |
| border_ = border; |
| fill_center_ = fill_center; |
| nearest_neighbor_ = nearest_neighbor; |
| layer_occlusion_ = layer_occlusion; |
| |
| NoteLayerPropertyChanged(); |
| } |
| |
| void NinePatchLayerImpl::CheckGeometryLimitations() { |
| // |border| is in layer space. It cannot exceed the bounds of the layer. |
| DCHECK_GE(bounds().width(), border_.width()); |
| DCHECK_GE(bounds().height(), border_.height()); |
| |
| // Sanity Check on |border| |
| DCHECK_LE(border_.x(), border_.width()); |
| DCHECK_LE(border_.y(), border_.height()); |
| DCHECK_GE(border_.x(), 0); |
| DCHECK_GE(border_.y(), 0); |
| |
| // |aperture| is in image space. It cannot exceed the bounds of the bitmap. |
| DCHECK(!image_aperture_.size().IsEmpty()); |
| DCHECK(gfx::Rect(image_bounds_).Contains(image_aperture_)) |
| << "image_bounds_ " << gfx::Rect(image_bounds_).ToString() |
| << " image_aperture_ " << image_aperture_.ToString(); |
| |
| // Sanity check on |layer_occlusion_|. It should always be within the |
| // border. |
| gfx::Rect border_rect(border_.x(), border_.y(), |
| bounds().width() - border_.width(), |
| bounds().height() - border_.height()); |
| DCHECK(layer_occlusion_.IsEmpty() || layer_occlusion_.Contains(border_rect)) |
| << "border_rect " << border_rect.ToString() << " layer_occlusion_ " |
| << layer_occlusion_.ToString(); |
| } |
| |
| std::vector<NinePatchLayerImpl::Patch> |
| NinePatchLayerImpl::ComputeQuadsWithoutOcclusion() const { |
| float image_width = image_bounds_.width(); |
| float image_height = image_bounds_.height(); |
| float layer_width = bounds().width(); |
| float layer_height = bounds().height(); |
| gfx::RectF layer_aperture(border_.x(), border_.y(), |
| layer_width - border_.width(), |
| layer_height - border_.height()); |
| |
| std::vector<Patch> patches; |
| patches.reserve(kMaxPatches); |
| |
| // Top-left. |
| patches.push_back( |
| Patch(BoundsToRect(0, 0, image_aperture_.x(), image_aperture_.y()), |
| BoundsToRect(0, 0, layer_aperture.x(), layer_aperture.y()))); |
| |
| // Top-right. |
| patches.push_back(Patch(BoundsToRect(image_aperture_.right(), 0, image_width, |
| image_aperture_.y()), |
| BoundsToRect(layer_aperture.right(), 0, layer_width, |
| layer_aperture.y()))); |
| |
| // Bottom-left. |
| patches.push_back(Patch(BoundsToRect(0, image_aperture_.bottom(), |
| image_aperture_.x(), image_height), |
| BoundsToRect(0, layer_aperture.bottom(), |
| layer_aperture.x(), layer_height))); |
| |
| // Bottom-right. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.right(), image_aperture_.bottom(), |
| image_width, image_height), |
| BoundsToRect(layer_aperture.right(), layer_aperture.bottom(), |
| layer_width, layer_height))); |
| |
| // Top. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.x(), 0, image_aperture_.right(), |
| image_aperture_.y()), |
| BoundsToRect(layer_aperture.x(), 0, layer_aperture.right(), |
| layer_aperture.y()))); |
| |
| // Left. |
| patches.push_back( |
| Patch(BoundsToRect(0, image_aperture_.y(), image_aperture_.x(), |
| image_aperture_.bottom()), |
| BoundsToRect(0, layer_aperture.y(), layer_aperture.x(), |
| layer_aperture.bottom()))); |
| |
| // Right. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.right(), image_aperture_.y(), |
| image_width, image_aperture_.bottom()), |
| BoundsToRect(layer_aperture.right(), layer_aperture.y(), |
| layer_width, layer_aperture.bottom()))); |
| |
| // Bottom. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.x(), image_aperture_.bottom(), |
| image_aperture_.right(), image_height), |
| BoundsToRect(layer_aperture.x(), layer_aperture.bottom(), |
| layer_aperture.right(), layer_height))); |
| |
| // Center. |
| if (fill_center_) { |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.x(), image_aperture_.y(), |
| image_aperture_.right(), image_aperture_.bottom()), |
| BoundsToRect(layer_aperture.x(), layer_aperture.y(), |
| layer_aperture.right(), layer_aperture.bottom()))); |
| } |
| |
| return patches; |
| } |
| |
| std::vector<NinePatchLayerImpl::Patch> |
| NinePatchLayerImpl::ComputeQuadsWithOcclusion() const { |
| float image_width = image_bounds_.width(), |
| image_height = image_bounds_.height(); |
| float layer_width = bounds().width(), layer_height = bounds().height(); |
| float layer_border_right = border_.width() - border_.x(), |
| layer_border_bottom = border_.height() - border_.y(); |
| float image_aperture_right = image_width - image_aperture_.right(), |
| image_aperture_bottom = image_height - image_aperture_.bottom(); |
| float layer_occlusion_right = layer_width - layer_occlusion_.right(), |
| layer_occlusion_bottom = layer_height - layer_occlusion_.bottom(); |
| gfx::RectF image_occlusion(BoundsToRect( |
| border_.x() == 0 ? 0 : (layer_occlusion_.x() * image_aperture_.x() / |
| border_.x()), |
| border_.y() == 0 ? 0 : (layer_occlusion_.y() * image_aperture_.y() / |
| border_.y()), |
| image_width - (layer_border_right == 0 ? 0 : layer_occlusion_right * |
| image_aperture_right / |
| layer_border_right), |
| image_height - (layer_border_bottom == 0 ? 0 : layer_occlusion_bottom * |
| image_aperture_bottom / |
| layer_border_bottom))); |
| gfx::RectF layer_aperture(border_.x(), border_.y(), |
| layer_width - border_.width(), |
| layer_height - border_.height()); |
| |
| std::vector<Patch> patches; |
| patches.reserve(kMaxOcclusionPatches); |
| |
| // Top-left-left. |
| patches.push_back( |
| Patch(BoundsToRect(0, 0, image_occlusion.x(), image_aperture_.y()), |
| BoundsToRect(0, 0, layer_occlusion_.x(), layer_aperture.y()))); |
| |
| // Top-left-right. |
| patches.push_back( |
| Patch(BoundsToRect(image_occlusion.x(), 0, image_aperture_.x(), |
| image_occlusion.y()), |
| BoundsToRect(layer_occlusion_.x(), 0, layer_aperture.x(), |
| layer_occlusion_.y()))); |
| |
| // Top-center. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.x(), 0, image_aperture_.right(), |
| image_occlusion.y()), |
| BoundsToRect(layer_aperture.x(), 0, layer_aperture.right(), |
| layer_occlusion_.y()))); |
| |
| // Top-right-left. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.right(), 0, image_occlusion.right(), |
| image_occlusion.y()), |
| BoundsToRect(layer_aperture.right(), 0, layer_occlusion_.right(), |
| layer_occlusion_.y()))); |
| |
| // Top-right-right. |
| patches.push_back(Patch(BoundsToRect(image_occlusion.right(), 0, image_width, |
| image_aperture_.y()), |
| BoundsToRect(layer_occlusion_.right(), 0, layer_width, |
| layer_aperture.y()))); |
| |
| // Left-center. |
| patches.push_back( |
| Patch(BoundsToRect(0, image_aperture_.y(), image_occlusion.x(), |
| image_aperture_.bottom()), |
| BoundsToRect(0, layer_aperture.y(), layer_occlusion_.x(), |
| layer_aperture.bottom()))); |
| |
| // Right-center. |
| patches.push_back( |
| Patch(BoundsToRect(image_occlusion.right(), image_aperture_.y(), |
| image_width, image_aperture_.bottom()), |
| BoundsToRect(layer_occlusion_.right(), layer_aperture.y(), |
| layer_width, layer_aperture.bottom()))); |
| |
| // Bottom-left-left. |
| patches.push_back(Patch(BoundsToRect(0, image_aperture_.bottom(), |
| image_occlusion.x(), image_height), |
| BoundsToRect(0, layer_aperture.bottom(), |
| layer_occlusion_.x(), layer_height))); |
| |
| // Bottom-left-right. |
| patches.push_back( |
| Patch(BoundsToRect(image_occlusion.x(), image_occlusion.bottom(), |
| image_aperture_.x(), image_height), |
| BoundsToRect(layer_occlusion_.x(), layer_occlusion_.bottom(), |
| layer_aperture.x(), layer_height))); |
| |
| // Bottom-center. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.x(), image_occlusion.bottom(), |
| image_aperture_.right(), image_height), |
| BoundsToRect(layer_aperture.x(), layer_occlusion_.bottom(), |
| layer_aperture.right(), layer_height))); |
| |
| // Bottom-right-left. |
| patches.push_back( |
| Patch(BoundsToRect(image_aperture_.right(), image_occlusion.bottom(), |
| image_occlusion.right(), image_height), |
| BoundsToRect(layer_aperture.right(), layer_occlusion_.bottom(), |
| layer_occlusion_.right(), layer_height))); |
| |
| // Bottom-right-right. |
| patches.push_back( |
| Patch(BoundsToRect(image_occlusion.right(), image_aperture_.bottom(), |
| image_width, image_height), |
| BoundsToRect(layer_occlusion_.right(), layer_aperture.bottom(), |
| layer_width, layer_height))); |
| |
| return patches; |
| } |
| |
| void NinePatchLayerImpl::AppendQuads( |
| RenderPass* render_pass, |
| AppendQuadsData* append_quads_data) { |
| CheckGeometryLimitations(); |
| SharedQuadState* shared_quad_state = |
| render_pass->CreateAndAppendSharedQuadState(); |
| PopulateSharedQuadState(shared_quad_state); |
| |
| AppendDebugBorderQuad(render_pass, bounds(), shared_quad_state, |
| append_quads_data); |
| |
| if (!ui_resource_id_) |
| return; |
| |
| ResourceId resource = |
| layer_tree_impl()->ResourceIdForUIResource(ui_resource_id_); |
| |
| if (!resource) |
| return; |
| |
| DCHECK(!bounds().IsEmpty()); |
| |
| std::vector<Patch> patches; |
| |
| if (layer_occlusion_.IsEmpty() || fill_center_) |
| patches = ComputeQuadsWithoutOcclusion(); |
| else |
| patches = ComputeQuadsWithOcclusion(); |
| |
| const float vertex_opacity[] = {1.0f, 1.0f, 1.0f, 1.0f}; |
| const bool opaque = layer_tree_impl()->IsUIResourceOpaque(ui_resource_id_); |
| static const bool flipped = false; |
| static const bool premultiplied_alpha = true; |
| |
| for (const auto& patch : patches) { |
| gfx::Rect visible_rect = |
| draw_properties().occlusion_in_content_space.GetUnoccludedContentRect( |
| ToRect(patch.layer_rect)); |
| gfx::Rect opaque_rect = opaque ? visible_rect : gfx::Rect(); |
| if (!visible_rect.IsEmpty()) { |
| gfx::RectF image_rect(NormalizedRect( |
| patch.image_rect, image_bounds_.width(), image_bounds_.height())); |
| TextureDrawQuad* quad = |
| render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>(); |
| quad->SetNew(shared_quad_state, ToRect(patch.layer_rect), opaque_rect, |
| visible_rect, resource, premultiplied_alpha, |
| image_rect.origin(), image_rect.bottom_right(), |
| SK_ColorTRANSPARENT, vertex_opacity, flipped, |
| nearest_neighbor_, false); |
| ValidateQuadResources(quad); |
| } |
| } |
| } |
| |
| const char* NinePatchLayerImpl::LayerTypeAsString() const { |
| return "cc::NinePatchLayerImpl"; |
| } |
| |
| std::unique_ptr<base::DictionaryValue> NinePatchLayerImpl::LayerTreeAsJson() { |
| std::unique_ptr<base::DictionaryValue> result = LayerImpl::LayerTreeAsJson(); |
| |
| base::ListValue* list = new base::ListValue; |
| list->AppendInteger(image_aperture_.origin().x()); |
| list->AppendInteger(image_aperture_.origin().y()); |
| list->AppendInteger(image_aperture_.size().width()); |
| list->AppendInteger(image_aperture_.size().height()); |
| result->Set("ImageAperture", list); |
| |
| list = new base::ListValue; |
| list->AppendInteger(image_bounds_.width()); |
| list->AppendInteger(image_bounds_.height()); |
| result->Set("ImageBounds", list); |
| |
| result->Set("Border", MathUtil::AsValue(border_).release()); |
| |
| result->SetBoolean("FillCenter", fill_center_); |
| |
| list = new base::ListValue; |
| list->AppendInteger(layer_occlusion_.x()); |
| list->AppendInteger(layer_occlusion_.y()); |
| list->AppendInteger(layer_occlusion_.width()); |
| list->AppendInteger(layer_occlusion_.height()); |
| result->Set("LayerOcclusion", list); |
| |
| return result; |
| } |
| |
| } // namespace cc |
