From: dhrname <dhrname@users.sourceforge.jp>
Date: Fri, 3 May 2013 14:44:39 +0000 (+0900)
Subject: テキスト処理の高速化
X-Git-Tag: v16beta~307
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=421058b0aafc7b20fc3aa9f11a73f378467d8f64;p=sie%2Fsie.git

テキスト処理の高速化
---

diff --git a/org/w3c/dom/svg.js b/org/w3c/dom/svg.js
index 403b32b..d894b75 100644
--- a/org/w3c/dom/svg.js
+++ b/org/w3c/dom/svg.js
@@ -4183,10 +4183,14 @@ SVGTextPositioningElement.prototype._texto = function(evt) {
       style = tar.ownerDocument.defaultView.getComputedStyle(tar, null),
       deter = Math.sqrt(Math.abs(tar.getScreenCTM()._determinant())),
       n = parseFloat(style.getPropertyValue("font-size")) * deter,
+      mt = -n-5+ "px",
+      lh = n+10+ "px",
       tod = tar.ownerDocument.documentElement,
       ttpc = ttp, //ttpcはttpのキャッシュ
       tlen = tar.getComputedTextLength(),
       anchor = style.getPropertyValue("text-anchor"),
+      isMiddle = (anchor === "middle"),
+      isEnd = (anchor === "end"),
       tedeco = style.getPropertyValue("text-decoration"), //text-decorationは継承しないので、個々に設定する
       ttps = ttp.style,
       ae = [],
@@ -4211,24 +4215,23 @@ SVGTextPositioningElement.prototype._texto = function(evt) {
             p = tar.getStartPositionOfChar(i);
         sty.position = "absolute";
         if (tar._isYokogaki) {
-          if (anchor === "middle") {
+          if (isMiddle) {
             p.x -= tlen / 2;
-          } else if (anchor === "end") {
+          } else if (isEnd) {
             p.x -= tlen;
           }
         } else {
-          if (anchor === "middle") {
+          if (isMiddle) {
             p.y -= tlen / 2;
-          } else if (anchor === "end") {
+          } else if (isEnd) {
             p.y -= tlen;
           }
         }
         sty.left = p.x + "px";
         sty.top = p.y + "px";
-        sty.width = "0px";
-        sty.height = "0px";
-        sty.marginTop = tar._isYokogaki ? -n-5+ "px" : "-5px";
-        sty.lineHeight = n+10+ "px";
+        sty.width = sty.height = "0px";
+        sty.marginTop = tar._isYokogaki ? mt : "-5px";
+        sty.lineHeight = lh;
         sty.textDecoration = tedeco;
         sty.display = "none";
         ttp.appendChild(ti._tars[ij]);
@@ -4358,7 +4361,7 @@ SVGTextPositioningElement.prototype._texto = function(evt) {
     ++j;
   }
   delete tar._cacheMatrix;
-  tftfunc = ae = isRect = evt = tar = style = tedeco = tpp = ttpc = style = color = cursor = disp = vis = ttps = backr = backrs = di = tft = jt = lts = deter = void 0;
+  anchor = isEnd = isMiddle = mt = lh = tftfunc = ae = isRect = evt = tar = style = tedeco = tpp = ttpc = style = color = cursor = disp = vis = ttps = backr = backrs = di = tft = jt = lts = deter = void 0;
 };
 
 function SVGTextElement(_doc) {