Added update type TransitionDurationChanged

PROTOCOL.md

@@ -14,6 +14,7 @@ The protocol in general is based on the OBS Remote protocol created by Bill Hami
     - ["SceneCollectionChanged"](#scenecollectionchanged)
     - ["SceneCollectionListChanged"](#scenecollectionlistchanged)
     - ["SwitchTransition"](#switchtransition)
+    - ["TransitionDurationChanged"](#transitiondurationchanged)
     - ["TransitionListChanged"](#transitionlistchanged)
     - ["ProfileChanged"](#profilechanged)
     - ["ProfileListChanged"](#profilelistchanged)
@@ -94,6 +95,12 @@ The active transition has been changed.
 
 ---
 
+#### "TransitionDurationChanged"
+Triggered when the transition duration has changed.
+- **"new-duration"** (integer) : new transition duration
+
+---
+
 #### "TransitionListChanged"
 The list of available transitions has been modified (Transitions have been added, removed, or renamed).
 

Utils.cpp

@@ -209,14 +209,18 @@ obs_data_array_t* Utils::GetProfiles()
 	return list;
 }
 
-int Utils::GetTransitionDuration()
+QSpinBox* Utils::GetTransitionDurationControl()
 {
 	QMainWindow *window = (QMainWindow*)obs_frontend_get_main_window();
-	QSpinBox* durationControl = window->findChild<QSpinBox*>("transitionDuration");
+	return window->findChild<QSpinBox*>("transitionDuration");
+}
 
-	if (durationControl)
+int Utils::GetTransitionDuration()
 {
-		return durationControl->value();
+	QSpinBox* control = GetTransitionDurationControl();
+	if (control)
+	{
+		return control->value();
 	}
 	else
 	{
@@ -226,12 +230,11 @@ int Utils::GetTransitionDuration()
 
 void Utils::SetTransitionDuration(int ms)
 {
-	QMainWindow *window = (QMainWindow*)obs_frontend_get_main_window();
-	QSpinBox* durationControl = window->findChild<QSpinBox*>("transitionDuration");
+	QSpinBox* control = GetTransitionDurationControl();
 
-	if (durationControl && ms >= 0)
+	if (control && ms >= 0)
 	{
-		durationControl->setValue(ms);
+		control->setValue(ms);
 	}
 }
 

Utils.h

@@ -19,6 +19,7 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 #ifndef UTILS_H
 #define UTILS_H
 
+#include <QSpinBox>
 #include <stdio.h>
 #include <obs-module.h>
 
@@ -37,6 +38,7 @@ class Utils
 		static obs_data_array_t* GetSceneCollections();
 		static obs_data_array_t* GetProfiles();
 
+		static QSpinBox* GetTransitionDurationControl();
 		static int GetTransitionDuration();
 		static void SetTransitionDuration(int ms);
 

WSEvents.cpp

@@ -19,7 +19,7 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 
 #include <util/platform.h>
 #include <QTimer>
-
+#include "Utils.h"
 #include "WSEvents.h"
 
 WSEvents::WSEvents(WSServer *srv)
@@ -27,6 +27,9 @@ WSEvents::WSEvents(WSServer *srv)
 	_srv = srv;
 	obs_frontend_add_event_callback(WSEvents::FrontendEventHandler, this);
 
+	QSpinBox* duration_control = Utils::GetTransitionDurationControl();
+	connect(duration_control, SIGNAL(valueChanged(int)), this, SLOT(TransitionDurationChanged(int)));
+
 	QTimer *statusTimer = new QTimer();
 	connect(statusTimer, SIGNAL(timeout()), this, SLOT(StreamStatus()));
 	statusTimer->start(2000); // equal to frontend's constant BITRATE_UPDATE_SECONDS
@@ -340,3 +343,13 @@ void WSEvents::StreamStatus()
 	obs_data_release(data);
 	obs_output_release(stream_output);
 }
+
+void WSEvents::TransitionDurationChanged(int ms)
+{
+	obs_data_t* fields = obs_data_create();
+	obs_data_set_int(fields, "new-duration", ms);
+
+	broadcastUpdate("TransitionDurationChanged", fields);
+
+	obs_data_release(fields);
+}

WSEvents.h

@@ -21,7 +21,6 @@ with this program. If not, see <https://www.gnu.org/licenses/>
 #define WSEVENTS_H
 
 #include <obs-frontend-api.h>
-
 #include "WSServer.h"
 
 class WSEvents : public QObject 
@@ -35,6 +34,7 @@ class WSEvents : public QObject
 
 	private Q_SLOTS:
 		void StreamStatus();
+		void TransitionDurationChanged(int ms);
 
 	private:
 		WSServer *_srv;