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94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_FLOW_VIEW_HOLDER_H_
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#define FLUTTER_FLOW_VIEW_HOLDER_H_
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#include <fuchsia/ui/gfx/cpp/fidl.h>
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#include <fuchsia/ui/views/cpp/fidl.h>
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#include <lib/ui/scenic/cpp/id.h>
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#include <lib/ui/scenic/cpp/resources.h>
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#include <lib/ui/scenic/cpp/session.h>
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#include <zircon/types.h>
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#include <memory>
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#include "flutter/fml/macros.h"
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#include "flutter/fml/memory/ref_counted.h"
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#include "flutter/fml/task_runner.h"
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#include "third_party/skia/include/core/SkColor.h"
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#include "third_party/skia/include/core/SkPoint.h"
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#include "third_party/skia/include/core/SkRect.h"
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#include "third_party/skia/include/core/SkSize.h"
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namespace flutter {
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// Represents a Scenic |ViewHolder| resource that imports a |View| from another
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// session.
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//
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// This object is created and destroyed on the |Rasterizer|'s thread.
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class ViewHolder {
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public:
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using ViewIdCallback = std::function<void(scenic::ResourceId)>;
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// `Create`, `Destroy`, and `FromId` must be executed on the raster thread or
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// errors will occur.
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//
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// `on_bind_callback` and `on_unbind_callback` will likewise execute on the
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// raster thread; clients are responsible for re-threading the callback if
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// needed.
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static void Create(zx_koid_t id,
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ViewIdCallback on_view_created,
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fuchsia::ui::views::ViewHolderToken view_holder_token);
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static void Destroy(zx_koid_t id, ViewIdCallback on_view_destroyed);
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static ViewHolder* FromId(zx_koid_t id);
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~ViewHolder() = default;
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// Sets the properties of the child view by issuing a Scenic command.
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void SetProperties(double width,
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double height,
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double insetTop,
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double insetRight,
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double insetBottom,
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double insetLeft,
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bool focusable);
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// Creates or updates the contained ViewHolder resource using the specified
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// |SceneUpdateContext|.
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void UpdateScene(scenic::Session* session,
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scenic::ContainerNode& container_node,
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const SkPoint& offset,
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SkAlpha opacity);
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// Alters various apsects of the ViewHolder's ViewProperties. The updates
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// are applied to Scenic on the new |UpdateScene| call.
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void set_hit_testable(bool value);
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void set_focusable(bool value);
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void set_size(const SkSize& size);
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void set_occlusion_hint(const SkRect& occlusion_hint);
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private:
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ViewHolder(fuchsia::ui::views::ViewHolderToken view_holder_token,
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ViewIdCallback on_view_created);
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std::unique_ptr<scenic::EntityNode> entity_node_;
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std::unique_ptr<scenic::OpacityNodeHACK> opacity_node_;
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std::unique_ptr<scenic::ViewHolder> view_holder_;
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fuchsia::ui::views::ViewHolderToken pending_view_holder_token_;
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ViewIdCallback on_view_created_;
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fuchsia::ui::gfx::HitTestBehavior hit_test_behavior_ =
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fuchsia::ui::gfx::HitTestBehavior::kDefault;
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fuchsia::ui::gfx::ViewProperties view_properties_;
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bool view_properties_changed_ = false;
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FML_DISALLOW_COPY_AND_ASSIGN(ViewHolder);
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};
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} // namespace flutter
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#endif // FLUTTER_FLOW_VIEW_HOLDER_H_
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