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Explores an API for triggering events and querying them at runtime.
For Flutter we expose an onEvent callback that you can add a callback to on the StateMachineController:
```dart
final controller = StateMachineController.fromArtboard(artboard, 'bumpy', onEvent: {);
controller.onEvent = (event) {
// Do something with event. Like:
if(event is OpenURLEvent) {
launchUrl(event.url);
}
};
artboard.addController(controller!);
```
Note that I haven't piped onEvent to the Flutter runtime yet but you'll see it in the StateMachineController in core.
In C++:
```c++
auto count = stateMachineInstance->firedEventCount();
for(auto i = 0; i < count; i++) {
auto event = stateMachineInstance->firedEventAt(i);
if(event->is<OpenURLEvent>()) {
// Do something with the url.
auto url = event->as<OpenURLEvent>()->url();
}
}
```
You can see some of this in action in the state_machine_event_test.cpp.
You can also see the events in the console in the editor:
<img width="717" alt="CleanShot 2023-08-10 at 18 03 22@2x" src="https://github.com/rive-app/rive/assets/454182/af21902a-424d-435b-b5b0-2a43701fe186">
In a follow up PR:
- Ability to trigger events from State (in/out) and Transition (start/end).
- Add custom properties to Events C++ API (currently they are loaded but not tracked against their respective events).
Diffs=
8caa7d377 Event triggering (#5793)
Co-authored-by: Luigi Rosso <luigi-rosso@users.noreply.github.com>- Loading branch information
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| e71ae68ba09767f246bf3d779f38bb731cf7da9a | ||
| 8caa7d377f368af8c667ca209a2ce7aef8679be2 |
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| @@ -0,0 +1,21 @@ | ||
| { | ||
| "name": "ListenerFireEvent", | ||
| "key": { | ||
| "int": 168, | ||
| "string": "listenerfireevent" | ||
| }, | ||
| "extends": "animation/listener_action.json", | ||
| "properties": { | ||
| "eventId": { | ||
| "type": "Id", | ||
| "typeRuntime": "uint", | ||
| "initialValue": "Core.missingId", | ||
| "initialValueRuntime": "-1", | ||
| "key": { | ||
| "int": 389, | ||
| "string": "eventid" | ||
| }, | ||
| "description": "Id of the Event referenced." | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| { | ||
| "name": "StateMachineComponentFolder", | ||
| "key": { | ||
| "int": 151, | ||
| "string": "statemachinecomponentfolder" | ||
| }, | ||
| "extends": "animation/state_machine_component.json", | ||
| "runtime": false | ||
| } |
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| { | ||
| "name": "StateMachineInputFolder", | ||
| "key": { | ||
| "int": 149, | ||
| "string": "statemachineinputfolder" | ||
| }, | ||
| "extends": "animation/state_machine_component_folder.json", | ||
| "runtime": false | ||
| } |
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| @@ -0,0 +1,9 @@ | ||
| { | ||
| "name": "StateMachineListenerFolder", | ||
| "key": { | ||
| "int": 150, | ||
| "string": "statemachinelistenerfolder" | ||
| }, | ||
| "extends": "animation/state_machine_component_folder.json", | ||
| "runtime": false | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| { | ||
| "name": "ClipboardHeader", | ||
| "key": { | ||
| "int": 146, | ||
| "string": "clipboardheader" | ||
| }, | ||
| "runtime": false, | ||
| "properties": { | ||
| "fileId": { | ||
| "type": "uint", | ||
| "initialValue": "0", | ||
| "key": { | ||
| "int": 293, | ||
| "string": "fileid" | ||
| }, | ||
| "description": "File clipboard contents has come from.", | ||
| "runtime": false | ||
| }, | ||
| "projectId": { | ||
| "type": "uint", | ||
| "initialValue": "0", | ||
| "key": { | ||
| "int": 294, | ||
| "string": "projectid" | ||
| }, | ||
| "description": "Project clipboard contents has come from.", | ||
| "runtime": false | ||
| }, | ||
| "clipboardTypeValue": { | ||
| "type": "uint", | ||
| "initialValue": "0", | ||
| "key": { | ||
| "int": 295, | ||
| "string": "clipboardtypevalue" | ||
| }, | ||
| "description": "Type of clipboard used to read these bytes", | ||
| "runtime": false | ||
| } | ||
| } | ||
| } |
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| @@ -0,0 +1,9 @@ | ||
| { | ||
| "name": "CustomProperty", | ||
| "key": { | ||
| "int": 167, | ||
| "string": "customproperty" | ||
| }, | ||
| "abstract": true, | ||
| "extends": "component.json" | ||
| } |
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