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9e1f546a85
The overlay surfaces are going to be the same IOSSurface implementation
with the platform views controller set to null (so these are surfaces
that don't support embedding platform views to them).
* Adds a FlutterOverlayView which is a UIView that's showing an
overlay surface.
* Creates an overlay surface for each embedded UIView (done in
FlutterPlatformViewsController).
* Changes CompositeEmbeddedView to return a new canvas.
* Makes the PlatformViewLayer replace the PaintContext's canvas with
the canvas for the overlay view.
* Changed canvas in PaintContext to be a pointer so it can be changed.
TBD in following PRs:
* Copy the current canvas state when replacing a canvas in PaintContext.
* Make FlutterOverlayView work with a GL backend (currently it only
works with software rendering)
59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
// Copyright 2015 The Chromium 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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#include "flutter/flow/layers/layer.h"
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#include "flutter/flow/paint_utils.h"
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#include "third_party/skia/include/core/SkColorFilter.h"
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namespace flow {
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Layer::Layer()
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: parent_(nullptr),
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needs_system_composite_(false),
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paint_bounds_(SkRect::MakeEmpty()) {}
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Layer::~Layer() = default;
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void Layer::Preroll(PrerollContext* context, const SkMatrix& matrix) {}
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#if defined(OS_FUCHSIA)
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void Layer::UpdateScene(SceneUpdateContext& context) {}
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#endif // defined(OS_FUCHSIA)
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Layer::AutoSaveLayer::AutoSaveLayer(const PaintContext& paint_context,
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const SkRect& bounds,
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const SkPaint* paint)
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: paint_context_(paint_context), bounds_(bounds) {
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paint_context_.canvas->saveLayer(bounds_, paint);
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}
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Layer::AutoSaveLayer::AutoSaveLayer(const PaintContext& paint_context,
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const SkCanvas::SaveLayerRec& layer_rec)
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: paint_context_(paint_context), bounds_(*layer_rec.fBounds) {
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paint_context_.canvas->saveLayer(layer_rec);
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}
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Layer::AutoSaveLayer Layer::AutoSaveLayer::Create(
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const PaintContext& paint_context,
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const SkRect& bounds,
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const SkPaint* paint) {
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return Layer::AutoSaveLayer(paint_context, bounds, paint);
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}
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Layer::AutoSaveLayer Layer::AutoSaveLayer::Create(
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const PaintContext& paint_context,
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const SkCanvas::SaveLayerRec& layer_rec) {
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return Layer::AutoSaveLayer(paint_context, layer_rec);
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}
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Layer::AutoSaveLayer::~AutoSaveLayer() {
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if (paint_context_.checkerboard_offscreen_layers) {
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DrawCheckerboard(paint_context_.canvas, bounds_);
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}
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paint_context_.canvas->restore();
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}
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} // namespace flow
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