dock: Expand focus peaking view when actual size property is enabled

When the actual size property is enabled, it is not necessary to let the
aspect ratio matching with the original size.

src/scope-widget.cpp

@@ -50,6 +50,9 @@ struct scope_widget_s
 	src_rect_s src_rect[N_SRC];
 	int i_mouse_last, i_src_menu;
 
+	// copy of properties
+	bool focuspeaking_actual_size;
+
 	bool destroying;
 };
 
@@ -122,10 +125,13 @@ static void draw(void *param, uint32_t cx, uint32_t cy)
 			int w = cx;
 			int h = (cy - y0) / (n_src - k);
 			switch (i) {
+			case 6: // Focus peaking
+				if (data->focuspeaking_actual_size)
+					break;
+				/* fallthrough */
 			case 0: // ROI
 			case 4: // Zebra
 			case 5: // False color
-			case 6: // Focus peaking
 				if (w * h_src > h * w_src)
 					w = h * w_src / h_src;
 				else if (h * w_src > w * h_src)
@@ -573,6 +579,15 @@ void ScopeWidget::default_properties(obs_data_t *props)
 	}
 }
 
+static void focuspeaking_update_cb(void *data_, calldata_t *cd)
+{
+	auto *data = static_cast<scope_widget_s *>(data_);
+
+	auto *src = static_cast<obs_source_t *>(calldata_ptr(cd, "source"));
+	OBSDataAutoRelease settings = obs_source_get_settings(src);
+	data->focuspeaking_actual_size = obs_data_get_bool(settings, "actual_size");
+}
+
 void ScopeWidget::save_properties(obs_data_t *props)
 {
 	pthread_mutex_lock(&data->mutex);
@@ -619,10 +634,15 @@ void ScopeWidget::load_properties(obs_data_t *props)
 		if (i > 0)
 			obs_data_set_string(prop, "target_name", roi_name);
 
-		if (!data->src[i])
+		if (!data->src[i]) {
 			data->src[i] = i == 0 ? create_scope_source_roi(id_list[i], prop, roi_name)
 					      : create_scope_source(id_list[i], prop);
-		else
+
+			if (i == 6) /* focuspeaking */ {
+				signal_handler_t *sh = obs_source_get_signal_handler(data->src[i]);
+				signal_handler_connect(sh, "update", focuspeaking_update_cb, data);
+			}
+		} else
 			obs_source_update(data->src[i], prop);
 
 		obs_data_release(prop);