zoom and scroll the waveform

1 files changed, 12 insertions, 0 deletions

diff --git a/animism-align/frontend/views/align/align.actions.js b/animism-align/frontend/views/align/align.actions.js
index 10dec44..36e17b0 100644
--- a/animism-align/frontend/views/align/align.actions.js
+++ b/animism-align/frontend/views/align/align.actions.js
@@ -3,3 +3,15 @@ import { store, history } from '../../store'
 import { api, post, pad, preloadImage } from '../../util'
 import actions from '../../actions'
 import { session } from '../../session'
+
+import { ZOOM_STEPS } from './constants'
+
+export const setScrollPosition = start_ts => dispatch => (
+  dispatch({ type: types.align.set_display_setting, key: 'start_ts', value: start_ts })
+)
+
+export const setZoom = zoom => dispatch => {
+  if (0 <= zoom && zoom < ZOOM_STEPS.length) {
+    dispatch({ type: types.align.set_display_setting, key: 'zoom', value: zoom })
+  }
+}