cursor

2 files changed, 54 insertions, 2 deletions

diff --git a/animism-align/frontend/views/align/components/cursor.component.js b/animism-align/frontend/views/align/components/cursor.component.js
new file mode 100644
index 0000000..c92f807
--- /dev/null
+++ b/animism-align/frontend/views/align/components/cursor.component.js
@@ -0,0 +1,25 @@
+import React, { Component } from 'react'
+
+import { ZOOM_STEPS } from '../constants'
+import { clamp, timestamp } from '../../../util'
+
+const Cursor = ({ timeline }) => {
+  const { start_ts, zoom, cursor_ts, duration } = timeline
+  const secondsPerPixel = ZOOM_STEPS[zoom] * 0.1
+  const y = (cursor_ts - start_ts) / secondsPerPixel
+  return (
+    <div
+      className='cursor'
+      style={{
+        top: y,
+      }}
+    >
+      <div className='line' />
+      <div className='tickLabel'>
+        {timestamp(cursor_ts, 1)}
+      </div>
+    </div>
+  )
+}
+
+export default Cursor
\ No newline at end of file
diff --git a/animism-align/frontend/views/align/components/timeline.component.js b/animism-align/frontend/views/align/components/timeline.component.js
index eb851b7..86175cf 100644
--- a/animism-align/frontend/views/align/components/timeline.component.js
+++ b/animism-align/frontend/views/align/components/timeline.component.js
@@ -8,6 +8,7 @@ import actions from '../../../actions'
 
 import Waveform from './waveform.component'
 import Ticks from './ticks.component'
+import Cursor from './cursor.component'
 
 import { ZOOM_STEPS } from '../constants'
 import { clamp } from '../../../util'
@@ -16,6 +17,7 @@ class Timeline extends Component {
   constructor(props){
     super(props)
     this.handleKeydown = this.handleKeydown.bind(this)
+    this.handleMouseMove = this.handleMouseMove.bind(this)
     this.handleWheel = this.handleWheel.bind(this)
   }
   componentDidMount() {
@@ -40,17 +42,42 @@ class Timeline extends Component {
   handleWheel(e) {
     let { start_ts, zoom, duration } = this.props.timeline
     let secondsPerPixel = ZOOM_STEPS[zoom] * 0.1 // 0.1 sec / step
-    let widthTimeDuration = window.innerWidth * secondsPerPixel // secs per pixel
+    let widthTimeDuration = window.innerHeight * secondsPerPixel // secs per pixel
 
     start_ts = clamp(start_ts + e.deltaY * ZOOM_STEPS[zoom], 0, Math.max(0, duration - widthTimeDuration / 2))
     console.log(start_ts)
     actions.align.setScrollPosition(start_ts)
   }
+  handleMouseMove(e) {
+    const { start_ts, zoom, duration } = this.props.timeline
+    const y = e.pageY
+    const height = window.innerHeight
+
+    let secondsPerPixel = ZOOM_STEPS[zoom] * 0.1
+    let widthTimeDuration = height * secondsPerPixel
+
+    let timeMin = start_ts
+    let timeMax = Math.min(start_ts + widthTimeDuration, duration)
+    let timeWidth = timeMax - timeMin
+
+    let cursor_ts = y * secondsPerPixel + start_ts
+    cursor_ts = clamp(cursor_ts, 0, timeMax)
+
+    actions.align.setCursor(cursor_ts)
+
+    // let pixelMin = timeMin / secondsPerPixel
+    // const ts = 
+  }
   render() {
     return (
-      <div className='timeline' onWheel={this.handleWheel}>
+      <div
+        className='timeline'
+        onWheel={this.handleWheel}
+        onMouseMove={this.handleMouseMove}
+      >
         <Waveform />
         <Ticks timeline={this.props.timeline} />
+        <Cursor timeline={this.props.timeline} />
       </div>
     )
   }