make room for push options - quick proto to push left and right

Author: archmoj

src/plots/cartesian/axes.js

@@ -3058,6 +3058,7 @@ axes.drawLabels = function(gd, ax, opts) {
         if(!ticklabeloverflow || ticklabeloverflow === 'allow') return;
 
         var hideOverflow = ticklabeloverflow.indexOf('hide') !== -1;
+        var pushOverflow = ticklabeloverflow.indexOf('push') !== -1;
 
         var isX = ax._id.charAt(0) === 'x';
         // div positions
@@ -3087,18 +3088,22 @@ axes.drawLabels = function(gd, ax, opts) {
 
             if(mathjaxGroup.empty()) {
                 var bb = Drawing.bBox(thisLabel.node());
-                var adjust = false;
+                var adjust = '';
                 if(isX) {
-                    if(bb.right > max) adjust = true;
-                    else if(bb.left < min) adjust = true;
+                    if(bb.right > max) adjust += 'right';
+                    else if(bb.left < min) adjust += 'left';
                 } else {
-                    if(bb.bottom > max) adjust = true;
-                    else if(bb.top + (ax.tickangle ? 0 : d.fontSize / 4) < min) adjust = true;
+                    if(bb.bottom > max) adjust += 'top';
+                    else if(bb.top + (ax.tickangle ? 0 : d.fontSize / 4) < min) adjust += 'bottom';
                 }
 
                 var t = thisLabel.select('text');
                 if(adjust) {
                     if(hideOverflow) t.style('opacity', 0); // hidden
+                    else if(pushOverflow) {
+                        if(adjust.indexOf('left') !== -1) t.attr('text-anchor', 'start');
+                        if(adjust.indexOf('right') !== -1) t.attr('text-anchor', 'end');
+                    }
                 } else {
                     t.style('opacity', 1); // visible