https://github.com/loic-sharma/flutter_raw_multiview
https://github.com/loic-sharma/flutter_raw_multiview
Last synced: 2 months ago
JSON representation
- Host: GitHub
- URL: https://github.com/loic-sharma/flutter_raw_multiview
- Owner: loic-sharma
- License: bsd-3-clause
- Created: 2023-03-29T22:12:27.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2023-03-30T04:03:41.000Z (about 2 years ago)
- Last Synced: 2025-02-02T12:48:02.942Z (4 months ago)
- Language: C++
- Size: 262 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Flutter raw multi-view
A prototype that renders to multiple views.
You can [modify the Flutter engine](https://github.com/flutter/flutter/wiki/Compiling-the-engine)
to create multiple views backed by the same surface:
```diff
diff --git a/lib/ui/window/platform_configuration.cc b/lib/ui/window/platform_configuration.cc
index 4e6e583745..043c191ad3 100644
--- a/lib/ui/window/platform_configuration.cc
+++ b/lib/ui/window/platform_configuration.cc
@@ -76,6 +76,12 @@ void PlatformConfiguration::DidCreateIsolate() {
windows_.emplace(kImplicitViewId,
std::make_unique(
kImplicitViewId, ViewportMetrics{1.0, 0.0, 0.0, -1}));
+
+ // HACK HACK. Add a second view with ID 1 and a third view with ID 2.
+ windows_.emplace(
+ 1, std::make_unique(1, ViewportMetrics{1.0, 0.0, 0.0, -1}));
+ windows_.emplace(
+ 2, std::make_unique(2, ViewportMetrics{1.0, 0.0, 0.0, -1}));
}
void PlatformConfiguration::UpdateLocales(
diff --git a/runtime/runtime_controller.cc b/runtime/runtime_controller.cc
index 996cc38114..19e2223c07 100644
--- a/runtime/runtime_controller.cc
+++ b/runtime/runtime_controller.cc
@@ -127,6 +127,8 @@ bool RuntimeController::SetViewportMetrics(const ViewportMetrics& metrics) {
if (auto* platform_configuration = GetPlatformConfigurationIfAvailable()) {
platform_configuration->get_window(0)->UpdateWindowMetrics(metrics);
+ // HACK HACK. Also send view metrics for second and third view.
+ platform_configuration->get_window(1)->UpdateWindowMetrics(metrics);
+ platform_configuration->get_window(2)->UpdateWindowMetrics(metrics);
return true;
}
diff --git a/shell/common/pipeline.h b/shell/common/pipeline.h
index 1de4498e7f..a4abc83548 100644
--- a/shell/common/pipeline.h
+++ b/shell/common/pipeline.h
@@ -100,6 +100,8 @@ class Pipeline {
continuation_ = nullptr;
TRACE_EVENT_ASYNC_END0("flutter", "PipelineProduce", trace_id_);
TRACE_FLOW_STEP("flutter", "PipelineItem", trace_id_);
+ } else {
+ // The engine assumes a single render per frame currently.
+ FML_LOG(ERROR) << "Continuation is null!";
}
return result;
}
```