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Autoscroll vertically when click-dragging the line number gutter

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This commit is contained in:
Nathan Sobo
2017-03-14 15:10:01 -06:00
committed by Antonio Scandurra
parent 6e9a9ef43c
commit cf19d0efd5
2 changed files with 62 additions and 2 deletions
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5
src/text-editor-component.js
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@@ -849,6 +849,7 @@ class TextEditorComponent {
const initialScreenRange = model.screenRangeForBufferRange(initialBufferRange)
this.handleMouseDragUntilMouseUp({
didDrag: (event) => {
this.autoscrollOnMouseDrag(event, true)
const dragRow = this.screenPositionForMouseEvent(event).row
const draggedLineScreenRange = Range(Point(dragRow, 0), Point(dragRow + 1, 0))
model.getLastSelection().setScreenRange(draggedLineScreenRange.union(initialScreenRange), {
@@ -899,7 +900,7 @@ class TextEditorComponent {
window.addEventListener('mouseup', didMouseUp)
}
autoscrollOnMouseDrag ({clientX, clientY}) {
autoscrollOnMouseDrag ({clientX, clientY}, verticalOnly = false) {
let {top, bottom, left, right} = this.refs.scroller.getBoundingClientRect()
top += MOUSE_DRAG_AUTOSCROLL_MARGIN
bottom -= MOUSE_DRAG_AUTOSCROLL_MARGIN
@@ -935,7 +936,7 @@ class TextEditorComponent {
}
}
if (xDelta != null) {
if (!verticalOnly && xDelta != null) {
const scaledDelta = scaleMouseDragAutoscrollDelta(xDelta) * xDirection
const newScrollLeft = this.constrainScrollLeft(this.measurements.scrollLeft + scaledDelta)
if (newScrollLeft !== this.measurements.scrollLeft) {