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feat: add RTL support #67

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feat: add RTL support #67

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1 change: 1 addition & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ pointerMode | String | 'all' | Specify pointer type. Supported values - 'touch'
friction | Number | 0.05 | Scroll friction factor - how fast scrolling stops after pointer release
bounceForce | Number | 0.1 | Elastic bounce effect factor
emulateScroll | Boolean | false | Enables mouse wheel/trackpad emulation inside viewport
rtl | Boolean | false | Enables right-to-left scroll behavior
preventDefaultOnEmulateScroll | String | false | Prevents horizontal or vertical default when `emulateScroll` is enabled (eg. useful to prevent horizontal trackpad gestures while enabling vertical scrolling). Could be 'horizontal' or 'vertical'.
lockScrollOnDragDirection | String | false | Detect drag direction and either prevent default `mousedown`/`touchstart` event or lock content scroll. Could be 'horizontal', 'vertical' or 'all'
dragDirectionTolerance | Number | 40 | Tolerance for horizontal or vertical drag detection
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13 changes: 11 additions & 2 deletions src/index.js
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Expand Up @@ -47,6 +47,7 @@ export default class ScrollBooster {
* @param {Boolean} options.textSelection - enables text selection
* @param {Boolean} options.inputsFocus - enables focus on input elements
* @param {Boolean} options.emulateScroll - enables mousewheel emulation
* @param {Boolean} options.rtl - enables right-to-left direction for scroll
* @param {Function} options.onClick - click handler
* @param {Function} options.onUpdate - state update handler
* @param {Function} options.onWheel - wheel handler
Expand All @@ -64,6 +65,7 @@ export default class ScrollBooster {
textSelection: false,
inputsFocus: true,
emulateScroll: false,
rtl: false,
preventDefaultOnEmulateScroll: false, // 'vertical', 'horizontal'
preventPointerMoveDefault: true,
lockScrollOnDragDirection: false, // 'vertical', 'horizontal', 'all'
Expand Down Expand Up @@ -136,10 +138,17 @@ export default class ScrollBooster {
width: getFullWidth(this.props.content),
height: getFullHeight(this.props.content),
};
this.edgeX = {
if (this.props.rtl) {
this.edgeX = {
from: 0,
to: Math.max(this.content.width - this.viewport.width, 0),
};
} else {
this.edgeX = {
from: Math.min(-this.content.width + this.viewport.width, 0),
to: 0,
};
};
}
this.edgeY = {
from: Math.min(-this.content.height + this.viewport.height, 0),
to: 0,
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