From e70cdef7a5a21eda34f5f90260f9fd26099d274e Mon Sep 17 00:00:00 2001
From: Ulrich-Matthias Schäfer <ulima.ums@googlemail.com>
Date: Sun, 3 Sep 2023 12:20:46 +0200
Subject: fix css, dont throw when screenCtm fails (fixes #968)

---
 src/modules/optional/css.js | 11 ++++-------
 src/types/Matrix.js         | 29 ++++++++++++++++++-----------
 src/utils/utils.js          |  7 -------
 3 files changed, 22 insertions(+), 25 deletions(-)

(limited to 'src')

diff --git a/src/modules/optional/css.js b/src/modules/optional/css.js
index 49a467b..1c5ed40 100644
--- a/src/modules/optional/css.js
+++ b/src/modules/optional/css.js
@@ -1,9 +1,6 @@
-import { camelCase } from '../../utils/utils.js'
 import { isBlank } from '../core/regex.js'
 import { registerMethods } from '../../utils/methods.js'
 
-const camelCaseWithVars = (str) => (str.startsWith('--') ? str : camelCase(str))
-
 // Dynamic style generator
 export function css(style, val) {
   const ret = {}
@@ -25,7 +22,7 @@ export function css(style, val) {
     // get style properties as array
     if (Array.isArray(style)) {
       for (const name of style) {
-        const cased = camelCaseWithVars(name)
+        const cased = name
         ret[name] = this.node.style.getPropertyValue(cased)
       }
       return ret
@@ -33,7 +30,7 @@ export function css(style, val) {
 
     // get style for property
     if (typeof style === 'string') {
-      return this.node.style.getPropertyValue(camelCaseWithVars(style))
+      return this.node.style.getPropertyValue(style)
     }
 
     // set styles in object
@@ -41,7 +38,7 @@ export function css(style, val) {
       for (const name in style) {
         // set empty string if null/undefined/'' was given
         this.node.style.setProperty(
-          camelCaseWithVars(name),
+          name,
           style[name] == null || isBlank.test(style[name]) ? '' : style[name]
         )
       }
@@ -51,7 +48,7 @@ export function css(style, val) {
   // set style for property
   if (arguments.length === 2) {
     this.node.style.setProperty(
-      camelCaseWithVars(style),
+      style,
       val == null || isBlank.test(val) ? '' : val
     )
   }
diff --git a/src/types/Matrix.js b/src/types/Matrix.js
index 760f002..f409a50 100644
--- a/src/types/Matrix.js
+++ b/src/types/Matrix.js
@@ -520,17 +520,24 @@ export function ctm() {
 }
 
 export function screenCTM() {
-  /* https://bugzilla.mozilla.org/show_bug.cgi?id=1344537
-     This is needed because FF does not return the transformation matrix
-     for the inner coordinate system when getScreenCTM() is called on nested svgs.
-     However all other Browsers do that */
-  if (typeof this.isRoot === 'function' && !this.isRoot()) {
-    const rect = this.rect(1, 1)
-    const m = rect.node.getScreenCTM()
-    rect.remove()
-    return new Matrix(m)
-  }
-  return new Matrix(this.node.getScreenCTM())
+  try {
+    /* https://bugzilla.mozilla.org/show_bug.cgi?id=1344537
+       This is needed because FF does not return the transformation matrix
+       for the inner coordinate system when getScreenCTM() is called on nested svgs.
+       However all other Browsers do that */
+    if (typeof this.isRoot === 'function' && !this.isRoot()) {
+      const rect = this.rect(1, 1)
+      const m = rect.node.getScreenCTM()
+      rect.remove()
+      return new Matrix(m)
+    }
+    return new Matrix(this.node.getScreenCTM())
+  } catch (e) {
+    console.warn(
+      `Cannot get CTM from SVG node ${this.node.nodeName}. Is the element rendered?`
+    )
+    return new Matrix()
+  }
 }
 
 register(Matrix, 'Matrix')
diff --git a/src/utils/utils.js b/src/utils/utils.js
index 90ef548..edd98b6 100644
--- a/src/utils/utils.js
+++ b/src/utils/utils.js
@@ -36,13 +36,6 @@ export function degrees(r) {
   return ((r * 180) / Math.PI) % 360
 }
 
-// Convert dash-separated-string to camelCase
-export function camelCase(s) {
-  return s.toLowerCase().replace(/-(.)/g, function (m, g) {
-    return g.toUpperCase()
-  })
-}
-
 // Convert camel cased string to dash separated
 export function unCamelCase(s) {
   return s.replace(/([A-Z])/g, function (m, g) {
-- 
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