画布增加的新功能

src/component/Canvas/CanvasEditor/utils/helperLine.js

@@ -5,8 +5,8 @@
  */
 function initAligningGuidelines(canvas) {
   var ctx = canvas.getSelectionContext(),
-    aligningLineOffset = 5,
-    aligningLineMargin = 4,
+    aligningLineOffset = 1,
+    aligningLineMargin = 1,
     aligningLineWidth = 1,
     aligningLineColor = "rgb(0,255,0)",
     viewportTransform,
@@ -14,9 +14,9 @@ function initAligningGuidelines(canvas) {
 
   function drawVerticalLine(coords) {
     drawLine(
-      coords.x + 0.5,
+      coords.x,
       coords.y1 > coords.y2 ? coords.y2 : coords.y1,
-      coords.x + 0.5,
+      coords.x,
       coords.y2 > coords.y1 ? coords.y2 : coords.y1
     );
   }
@@ -24,9 +24,9 @@ function initAligningGuidelines(canvas) {
   function drawHorizontalLine(coords) {
     drawLine(
       coords.x1 > coords.x2 ? coords.x2 : coords.x1,
-      coords.y + 0.5,
+      coords.y,
       coords.x2 > coords.x1 ? coords.x2 : coords.x1,
-      coords.y + 0.5
+      coords.y
     );
   }
 
@@ -351,7 +351,7 @@ export function initCenteringGuidelines(canvas) {
     canvasHeightCenter = canvasHeight / 2,
     canvasWidthCenterMap = {},
     canvasHeightCenterMap = {},
-    centerLineMargin = 4,
+    centerLineMargin = 1,
     centerLineColor = "rgba(255,0,241,0.5)",
     centerLineWidth = 1,
     ctx = canvas.getSelectionContext(),