feat:优化最小宽度选区

src/editor/assets/css/index.css

@@ -1,5 +1,5 @@
 .inputarea {
-  width: 1px;
+  width: 0;
   height: 12px;
   min-width: 0;
   min-height: 0;

src/editor/core/draw/Draw.ts

@@ -375,7 +375,11 @@ export class Draw {
         // 选区绘制
         const { startIndex, endIndex } = this.range.getRange()
         if (startIndex !== endIndex && startIndex < index && index <= endIndex) {
-          this.range.render(ctx, x, y, metrics.width, curRow.height)
+          let width = metrics.width
+          if (width === 0 && curRow.elementList.length === 1) {
+            width = this.options.rangeMinWidth
+          }
+          this.range.render(ctx, x, y, width, curRow.height)
         }
         index++
         x += metrics.width

src/editor/index.ts

@@ -30,6 +30,7 @@ export default class Editor {
       strikeoutColor: '#FF0000',
       rangeAlpha: 0.6,
       rangeColor: '#AECBFA',
+      rangeMinWidth: 5,
       searchMatchAlpha: 0.6,
       searchMatchColor: '#FFFF00',
       highlightAlpha: 0.6,

src/editor/interface/Editor.ts

@@ -12,6 +12,7 @@ export interface IEditorOption {
   strikeoutColor?: string;
   rangeColor?: string;
   rangeAlpha?: number;
+  rangeMinWidth?: number;
   searchMatchColor?: string;
   searchMatchAlpha?: number;
   highlightAlpha?: number;