webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 152 insertions, 0 deletions

diff --git a/Source/WebInspectorUI/UserInterface/Views/FontResourceContentView.js b/Source/WebInspectorUI/UserInterface/Views/FontResourceContentView.js
new file mode 100644
index 000000000..310c22d63
--- /dev/null
+++ b/Source/WebInspectorUI/UserInterface/Views/FontResourceContentView.js
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2013, 2015 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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.
+ */
+
+WebInspector.FontResourceContentView = class FontResourceContentView extends WebInspector.ResourceContentView
+{
+    constructor(resource)
+    {
+        super(resource, "font");
+
+        this._styleElement = null;
+        this._previewElement = null;
+    }
+
+    // Public
+
+    get previewElement()
+    {
+        return this._previewElement;
+    }
+
+    sizeToFit()
+    {
+        if (!this._previewElement)
+            return;
+
+        // Start at the maximum size and try progressively smaller font sizes until minimum is reached or the preview element is not as wide as the main element.
+        for (var fontSize = WebInspector.FontResourceContentView.MaximumFontSize; fontSize >= WebInspector.FontResourceContentView.MinimumFontSize; fontSize -= 5) {
+            this._previewElement.style.fontSize = fontSize + "px";
+            if (this._previewElement.offsetWidth <= this.element.offsetWidth)
+                break;
+        }
+    }
+
+    contentAvailable(content, base64Encoded)
+    {
+        this.element.removeChildren();
+
+        const uniqueFontName = "WebInspectorFontPreview" + (++WebInspector.FontResourceContentView._uniqueFontIdentifier);
+
+        var format = "";
+
+        // We need to specify a format when loading SVG fonts to make them work.
+        if (this.resource.mimeTypeComponents.type === "image/svg+xml")
+            format = " format(\"svg\")";
+
+        if (this._styleElement && this._styleElement.parentNode)
+            this._styleElement.parentNode.removeChild(this._styleElement);
+
+        this._fontObjectURL = this.resource.createObjectURL();
+
+        this._styleElement = document.createElement("style");
+        this._styleElement.textContent = "@font-face { font-family: \"" + uniqueFontName + "\"; src: url(" + this._fontObjectURL + ")" + format + "; }";
+
+        // The style element will be added when shown later if we are not visible now.
+        if (this.visible)
+            document.head.appendChild(this._styleElement);
+
+        this._previewElement = document.createElement("div");
+        this._previewElement.className = "preview";
+        this._previewElement.style.fontFamily = uniqueFontName;
+
+        function createMetricElement(className)
+        {
+            var metricElement = document.createElement("div");
+            metricElement.className = "metric " + className;
+            return metricElement;
+        }
+
+        var lines = WebInspector.FontResourceContentView.PreviewLines;
+        for (var i = 0; i < lines.length; ++i) {
+            var lineElement = document.createElement("div");
+            lineElement.className = "line";
+
+            lineElement.appendChild(createMetricElement("top"));
+            lineElement.appendChild(createMetricElement("xheight"));
+            lineElement.appendChild(createMetricElement("middle"));
+            lineElement.appendChild(createMetricElement("baseline"));
+            lineElement.appendChild(createMetricElement("bottom"));
+
+            var contentElement = document.createElement("div");
+            contentElement.className = "content";
+            contentElement.textContent = lines[i];
+            lineElement.appendChild(contentElement);
+
+            this._previewElement.appendChild(lineElement);
+        }
+
+        this.element.appendChild(this._previewElement);
+
+        this.sizeToFit();
+    }
+
+    shown()
+    {
+        // Add the style element since it is removed when hidden.
+        if (this._styleElement)
+            document.head.appendChild(this._styleElement);
+    }
+
+    hidden()
+    {
+        // Remove the style element so it will not stick around when this content view is destroyed.
+        if (this._styleElement && this._styleElement.parentNode)
+            this._styleElement.parentNode.removeChild(this._styleElement);
+    }
+
+    closed()
+    {
+        // This is a workaround for the fact that the browser does not send any events
+        // when a @font-face resource is loaded. So, we assume it could be needed until
+        // the content view is destroyed, as re-attaching the style element would cause
+        // the object URL to be resolved again.
+        if (this._fontObjectURL)
+            URL.revokeObjectURL(this._fontObjectURL);
+    }
+
+    // Protected
+
+    layout()
+    {
+        this.sizeToFit();
+    }
+};
+
+WebInspector.FontResourceContentView._uniqueFontIdentifier = 0;
+
+WebInspector.FontResourceContentView.PreviewLines = ["ABCDEFGHIJKLM", "NOPQRSTUVWXYZ", "abcdefghijklm", "nopqrstuvwxyz", "1234567890"];
+
+WebInspector.FontResourceContentView.MaximumFontSize = 72;
+WebInspector.FontResourceContentView.MinimumFontSize = 12;