Implement annotation border style class and constants

src/core/annotation.js

@@ -334,6 +334,144 @@ var Annotation = (function AnnotationClosure() {
   return Annotation;
 })();
 
+/**
+ * Contains all data regarding an annotation's border style.
+ *
+ * @class
+ */
+var AnnotationBorderStyle = (function AnnotationBorderStyleClosure() {
+  /**
+   * @constructor
+   * @private
+   */
+  function AnnotationBorderStyle() {
+    this.width = 1;
+    this.style = AnnotationBorderStyleType.SOLID;
+    this.dashArray = [3];
+    this.horizontalCornerRadius = 0;
+    this.verticalCornerRadius = 0;
+  }
+
+  AnnotationBorderStyle.prototype = {
+    /**
+     * Set the width.
+     *
+     * @public
+     * @memberof AnnotationBorderStyle
+     * @param {integer} width - The width
+     */
+    setWidth: function AnnotationBorderStyle_setWidth(width) {
+      if (width === (width | 0)) {
+        this.width = width;
+      }
+    },
+
+    /**
+     * Set the style.
+     *
+     * @public
+     * @memberof AnnotationBorderStyle
+     * @param {Object} style - The style object
+     * @see {@link shared/util.js}
+     */
+    setStyle: function AnnotationBorderStyle_setStyle(style) {
+      if (!style) {
+        return;
+      }
+      switch (style.name) {
+        case 'S':
+          this.style = AnnotationBorderStyleType.SOLID;
+          break;
+
+        case 'D':
+          this.style = AnnotationBorderStyleType.DASHED;
+          break;
+
+        case 'B':
+          this.style = AnnotationBorderStyleType.BEVELED;
+          break;
+
+        case 'I':
+          this.style = AnnotationBorderStyleType.INSET;
+          break;
+
+        case 'U':
+          this.style = AnnotationBorderStyleType.UNDERLINE;
+          break;
+
+        default:
+          break;
+      }
+    },
+
+    /**
+     * Set the dash array.
+     *
+     * @public
+     * @memberof AnnotationBorderStyle
+     * @param {Array} dashArray - The dash array with at least one element
+     */
+    setDashArray: function AnnotationBorderStyle_setDashArray(dashArray) {
+      // We validate the dash array, but we do not use it because CSS does not
+      // allow us to change spacing of dashes. For more information, visit
+      // http://www.w3.org/TR/css3-background/#the-border-style.
+      if (isArray(dashArray) && dashArray.length > 0) {
+        // According to the PDF specification: the elements in a dashArray
+        // shall be numbers that are nonnegative and not all equal to zero.
+        var isValid = true;
+        var allZeros = true;
+        for (var i = 0, len = dashArray.length; i < len; i++) {
+          var element = dashArray[i];
+          var validNumber = (+element >= 0);
+          if (!validNumber) {
+            isValid = false;
+            break;
+          } else if (element > 0) {
+            allZeros = false;
+          }
+        }
+        if (isValid && !allZeros) {
+          this.dashArray = dashArray;
+        } else {
+          this.width = 0; // Adobe behavior when the array is invalid.
+        }
+      } else if (dashArray) {
+        this.width = 0; // Adobe behavior when the array is invalid.
+      }
+    },
+
+    /**
+     * Set the horizontal corner radius (from a Border dictionary).
+     *
+     * @public
+     * @memberof AnnotationBorderStyle
+     * @param {integer} radius - The horizontal corner radius
+     */
+    setHorizontalCornerRadius:
+        function AnnotationBorderStyle_setHorizontalCornerRadius(radius) {
+      if (radius === (radius | 0)) {
+        this.horizontalCornerRadius = radius;
+      }
+    },
+
+    /**
+     * Set the vertical corner radius (from a Border dictionary).
+     *
+     * @public
+     * @memberof AnnotationBorderStyle
+     * @param {integer} radius - The vertical corner radius
+     */
+    setVerticalCornerRadius:
+        function AnnotationBorderStyle_setVerticalCornerRadius(radius) {
+      if (radius === (radius | 0)) {
+        this.verticalCornerRadius = radius;
+      }
+    }
+  };
+
+  return AnnotationBorderStyle;
+})();
+
 var WidgetAnnotation = (function WidgetAnnotationClosure() {
 
   function WidgetAnnotation(params) {

src/shared/util.js

@@ -50,6 +50,14 @@ var AnnotationType = {
   LINK: 3
 };
 
+var AnnotationBorderStyleType = {
+  SOLID: 1,
+  DASHED: 2,
+  BEVELED: 3,
+  INSET: 4,
+  UNDERLINE: 5
+};
+
 var StreamType = {
   UNKNOWN: 0,
   FLATE: 1,