1 files changed, 144 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/devtools/front_end/source_frame/FontView.js b/chromium/third_party/WebKit/Source/devtools/front_end/source_frame/FontView.js
new file mode 100644
index 00000000000..ec4e5d12d74
--- /dev/null
+++ b/chromium/third_party/WebKit/Source/devtools/front_end/source_frame/FontView.js
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2007, 2008 Apple Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @extends {WebInspector.ResourceView}
+ * @constructor
+ */
+WebInspector.FontView = function(resource)
+{
+    WebInspector.ResourceView.call(this, resource);
+
+    this.element.classList.add("font");
+}
+
+WebInspector.FontView._fontPreviewLines = [ "ABCDEFGHIJKLM", "NOPQRSTUVWXYZ", "abcdefghijklm", "nopqrstuvwxyz", "1234567890" ];
+
+WebInspector.FontView._fontId = 0;
+
+WebInspector.FontView._measureFontSize = 50;
+
+WebInspector.FontView.prototype = {
+    /**
+     * @return {boolean}
+     */
+    hasContent: function()
+    {
+        return true;
+    },
+
+    _createContentIfNeeded: function()
+    {
+        if (this.fontPreviewElement)
+            return;
+
+        var uniqueFontName = "WebInspectorFontPreview" + (++WebInspector.FontView._fontId);
+
+        this.fontStyleElement = document.createElement("style");
+        this.fontStyleElement.textContent = "@font-face { font-family: \"" + uniqueFontName + "\"; src: url(" + this.resource.url + "); }";
+        document.head.appendChild(this.fontStyleElement);
+
+        var fontPreview = document.createElement("div");
+        for (var i = 0; i < WebInspector.FontView._fontPreviewLines.length; ++i) {
+            if (i > 0)
+                fontPreview.appendChild(document.createElement("br"));
+            fontPreview.appendChild(document.createTextNode(WebInspector.FontView._fontPreviewLines[i]));
+        }
+        this.fontPreviewElement = fontPreview.cloneNode(true);
+        this.fontPreviewElement.style.setProperty("font-family", uniqueFontName);
+        this.fontPreviewElement.style.setProperty("visibility", "hidden");
+
+        this._dummyElement = fontPreview;
+        this._dummyElement.style.visibility = "hidden";
+        this._dummyElement.style.zIndex = "-1";
+        this._dummyElement.style.display = "inline";
+        this._dummyElement.style.position = "absolute";
+        this._dummyElement.style.setProperty("font-family", uniqueFontName);
+        this._dummyElement.style.setProperty("font-size", WebInspector.FontView._measureFontSize + "px");
+
+        this.element.appendChild(this.fontPreviewElement);
+    },
+
+    wasShown: function()
+    {
+        this._createContentIfNeeded();
+
+        this.updateFontPreviewSize();
+    },
+
+    onResize: function()
+    {
+        if (this._inResize)
+            return;
+
+        this._inResize = true;
+        try {
+            this.updateFontPreviewSize();
+        } finally {
+            delete this._inResize;
+        }
+    },
+
+    _measureElement: function()
+    {
+        this.element.appendChild(this._dummyElement);
+        var result = { width: this._dummyElement.offsetWidth, height: this._dummyElement.offsetHeight };
+        this.element.removeChild(this._dummyElement);
+
+        return result;
+    },
+
+    updateFontPreviewSize: function()
+    {
+        if (!this.fontPreviewElement || !this.isShowing())
+            return;
+
+        this.fontPreviewElement.style.removeProperty("visibility");
+        var dimension = this._measureElement();
+
+        const height = dimension.height;
+        const width = dimension.width;
+
+        // Subtract some padding. This should match the paddings in the CSS plus room for the scrollbar.
+        const containerWidth = this.element.offsetWidth - 50;
+        const containerHeight = this.element.offsetHeight - 30;
+
+        if (!height || !width || !containerWidth || !containerHeight) {
+            this.fontPreviewElement.style.removeProperty("font-size");
+            return;
+        }
+
+        var widthRatio = containerWidth / width;
+        var heightRatio = containerHeight / height;
+        var finalFontSize = Math.floor(WebInspector.FontView._measureFontSize * Math.min(widthRatio, heightRatio)) - 2;
+
+        this.fontPreviewElement.style.setProperty("font-size", finalFontSize + "px", null);
+    },
+
+    __proto__: WebInspector.ResourceView.prototype
+}