1 files changed, 92 insertions, 0 deletions
diff --git a/src/com/android/swe/browser/preferences/InvertedContrastPreview.java b/src/com/android/swe/browser/preferences/InvertedContrastPreview.java
new file mode 100644
index 00000000..2b8ad473
--- /dev/null
+++ b/src/com/android/swe/browser/preferences/InvertedContrastPreview.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.browser.preferences;
+
+import android.content.Context;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.webkit.WebSettingsClassic;
+import android.webkit.WebViewClassic;
+
+import com.android.browser.BrowserSettings;
+import com.android.browser.BrowserWebView;
+import com.android.browser.WebViewProperties;
+
+public class InvertedContrastPreview extends WebViewPreview {
+
+    static final String IMG_ROOT = "content://com.android.browser.home/res/raw/";
+    static final String[] THUMBS = new String[] {
+        "thumb_google",
+        "thumb_amazon",
+        "thumb_cnn",
+        "thumb_espn",
+        "", // break
+        "thumb_bbc",
+        "thumb_nytimes",
+        "thumb_weatherchannel",
+        "thumb_picasa",
+    };
+
+    String mHtml;
+
+    public InvertedContrastPreview(
+            Context context, AttributeSet attrs, int defStyle) {
+        super(context, attrs, defStyle);
+    }
+
+    public InvertedContrastPreview(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public InvertedContrastPreview(Context context) {
+        super(context);
+    }
+
+    @Override
+    protected void init(Context context) {
+        super.init(context);
+        StringBuilder builder = new StringBuilder("<html><body style=\"width: 1000px\">");
+        for (String thumb : THUMBS) {
+            if (TextUtils.isEmpty(thumb)) {
+                builder.append("<br />");
+                continue;
+            }
+            builder.append("<img src=\"");
+            builder.append(IMG_ROOT);
+            builder.append(thumb);
+            builder.append("\" />&nbsp;");
+        }
+        builder.append("</body></html>");
+        mHtml = builder.toString();
+    }
+
+    @Override
+    protected void updatePreview(boolean forceReload) {
+        if (mWebView == null || !BrowserWebView.isClassic()) return;
+
+        WebSettingsClassic ws = WebViewClassic.fromWebView(mWebView).getSettings();
+        BrowserSettings bs = BrowserSettings.getInstance();
+        ws.setProperty(WebViewProperties.gfxInvertedScreen,
+                bs.useInvertedRendering() ? "true" : "false");
+        ws.setProperty(WebViewProperties.gfxInvertedScreenContrast,
+                Float.toString(bs.getInvertedContrast()));
+        if (forceReload) {
+            mWebView.loadData(mHtml, "text/html", null);
+        }
+    }
+
+}