X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=src%2Fplugins%2Fgrid.js;h=25126db3cbd1a19b1f7902b3c6549f7462bf6bfa;hb=bd6ee5dcf9017abcbefa480e79756a6957c5c7ed;hp=bf6e3fecfd41df0d704707d5471780f5740ea4d2;hpb=6ecc073934b76e5076f917112a24ff7094857730;p=dygraphs.git

diff --git a/src/plugins/grid.js b/src/plugins/grid.js
index bf6e3fe..25126db 100644
--- a/src/plugins/grid.js
+++ b/src/plugins/grid.js
@@ -62,26 +62,25 @@ grid.prototype.willDrawChart = function(e) {
     ticks = layout.yticks;
     ctx.save();
     // draw grids for the different y axes
-    for (i = 0; i < ticks.length; i++) {
-      var axis = ticks[i][0];
-      if(drawGrid[axis]) {
+    for (var tick of ticks) {
+      if (!tick.has_tick) continue;
+      var axis = tick.axis;
+      if (drawGrid[axis]) {
+        ctx.save();
         if (stroking[axis]) {
-          ctx.installPattern(strokePattern[axis]);
+          if (ctx.setLineDash) ctx.setLineDash(strokePattern[axis]);
         }
         ctx.strokeStyle = strokeStyles[axis];
         ctx.lineWidth = lineWidths[axis];
 
         x = halfUp(area.x);
-        y = halfDown(area.y + ticks[i][1] * area.h);
+        y = halfDown(area.y + tick.pos * area.h);
         ctx.beginPath();
         ctx.moveTo(x, y);
         ctx.lineTo(x + area.w, y);
-        ctx.closePath();
         ctx.stroke();
 
-        if (stroking[axis]) {
-          ctx.uninstallPattern();
-        }
+        ctx.restore();
       }
     }
     ctx.restore();
@@ -94,12 +93,13 @@ grid.prototype.willDrawChart = function(e) {
     var strokePattern = g.getOptionForAxis('gridLinePattern', 'x');
     var stroking = strokePattern && (strokePattern.length >= 2);
     if (stroking) {
-      ctx.installPattern(strokePattern);
+      if (ctx.setLineDash) ctx.setLineDash(strokePattern);
     }
     ctx.strokeStyle = g.getOptionForAxis('gridLineColor', 'x');
     ctx.lineWidth = g.getOptionForAxis('gridLineWidth', 'x');
-    for (i = 0; i < ticks.length; i++) {
-      x = halfUp(area.x + ticks[i][0] * area.w);
+    for (var tick of ticks) {
+      if (!tick.has_tick) continue;
+      x = halfUp(area.x + tick.pos * area.w);
       y = halfDown(area.y + area.h);
       ctx.beginPath();
       ctx.moveTo(x, y);
@@ -108,7 +108,7 @@ grid.prototype.willDrawChart = function(e) {
       ctx.stroke();
     }
     if (stroking) {
-      ctx.uninstallPattern();
+      if (ctx.setLineDash) ctx.setLineDash([]);
     }
     ctx.restore();
   }