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diff --git a/tools/layoutlib/bridge/src/android/graphics/BidiRenderer.java b/tools/layoutlib/bridge/src/android/graphics/BidiRenderer.java
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+++ b/tools/layoutlib/bridge/src/android/graphics/BidiRenderer.java
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+/*
+ * Copyright (C) 2013 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 android.graphics;
+
+import java.awt.Font;
+import java.awt.Graphics2D;
+import java.awt.font.FontRenderContext;
+import java.awt.font.GlyphVector;
+import java.util.LinkedList;
+import java.util.List;
+
+import com.ibm.icu.lang.UScript;
+import com.ibm.icu.lang.UScriptRun;
+
+import android.graphics.Paint_Delegate.FontInfo;
+
+/**
+ * Render the text by breaking it into various scripts and using the right font for each script.
+ * Can be used to measure the text without actually drawing it.
+ */
+@SuppressWarnings("deprecation")
+public class BidiRenderer {
+
+    /* package */ static class ScriptRun {
+        int start;
+        int limit;
+        boolean isRtl;
+        int scriptCode;
+        FontInfo font;
+
+        public ScriptRun(int start, int limit, boolean isRtl) {
+            this.start = start;
+            this.limit = limit;
+            this.isRtl = isRtl;
+            this.scriptCode = UScript.INVALID_CODE;
+        }
+    }
+
+    /* package */ Graphics2D graphics;
+    /* package */ Paint_Delegate paint;
+    /* package */ char[] text;
+
+    /**
+     * @param graphics May be null.
+     * @param paint The Paint to use to get the fonts. Should not be null.
+     * @param text Unidirectional text. Should not be null.
+     */
+    /* package */ BidiRenderer(Graphics2D graphics, Paint_Delegate paint, char[] text) {
+        assert (paint != null);
+        this.graphics = graphics;
+        this.paint = paint;
+        this.text = text;
+    }
+
+    /**
+     * Render unidirectional text.
+     *
+     * This method can also be used to measure the width of the text without actually drawing it.
+     *
+     * @param start index of the first character
+     * @param limit index of the first character that should not be rendered.
+     * @param isRtl is the text right-to-left
+     * @param advances If not null, then advances for each character to be rendered are returned
+     *            here.
+     * @param advancesIndex index into advances from where the advances need to be filled.
+     * @param draw If true and {@link graphics} is not null, draw the rendered text on the graphics
+     *            at the given co-ordinates
+     * @param x The x-coordinate of the left edge of where the text should be drawn on the given
+     *            graphics.
+     * @param y The y-coordinate at which to draw the text on the given graphics.
+     * @return The x-coordinate of the right edge of the drawn text. In other words,
+     *            x + the width of the text.
+     */
+    /* package */ float renderText(int start, int limit, boolean isRtl, float advances[],
+            int advancesIndex, boolean draw, float x, float y) {
+        // We break the text into scripts and then select font based on it and then render each of
+        // the script runs.
+        for (ScriptRun run : getScriptRuns(text, start, limit, isRtl, paint.getFonts())) {
+            int flag = Font.LAYOUT_NO_LIMIT_CONTEXT | Font.LAYOUT_NO_START_CONTEXT;
+            flag |= isRtl ? Font.LAYOUT_RIGHT_TO_LEFT : Font.LAYOUT_LEFT_TO_RIGHT;
+            x = renderScript(run.start, run.limit, run.font, flag, advances, advancesIndex, draw,
+                    x, y);
+            advancesIndex += run.limit - run.start;
+        }
+        return x;
+    }
+
+    /**
+     * Render a script run. Use the preferred font to render as much as possible. This also
+     * implements a fallback mechanism to render characters that cannot be drawn using the
+     * preferred font.
+     *
+     * @return x + width of the text drawn.
+     */
+    private float renderScript(int start, int limit, FontInfo preferredFont, int flag,
+            float advances[], int advancesIndex, boolean draw, float x, float y) {
+        List<FontInfo> fonts = paint.getFonts();
+        if (fonts == null || preferredFont == null) {
+            return x;
+        }
+
+        while (start < limit) {
+            boolean foundFont = false;
+            int canDisplayUpTo = preferredFont.mFont.canDisplayUpTo(text, start, limit);
+            if (canDisplayUpTo == -1) {
+                return render(start, limit, preferredFont, flag, advances, advancesIndex, draw,
+                        x, y);
+            } else if (canDisplayUpTo > start) { // can draw something
+                x = render(start, canDisplayUpTo, preferredFont, flag, advances, advancesIndex,
+                        draw, x, y);
+                advancesIndex += canDisplayUpTo - start;
+                start = canDisplayUpTo;
+            }
+
+            int charCount = Character.isHighSurrogate(text[start]) ? 2 : 1;
+            for (FontInfo font : fonts) {
+                canDisplayUpTo = font.mFont.canDisplayUpTo(text, start, start + charCount);
+                if (canDisplayUpTo == -1) {
+                    x = render(start, start+charCount, font, flag, advances, advancesIndex, draw,
+                            x, y);
+                    start += charCount;
+                    advancesIndex += charCount;
+                    foundFont = true;
+                    break;
+                }
+            }
+            if (!foundFont) {
+                // No font can display this char. Use the preferred font. The char will most
+                // probably appear as a box or a blank space. We could, probably, use some
+                // heuristics and break the character into the base character and diacritics and
+                // then draw it, but it's probably not worth the effort.
+                x = render(start, start + charCount, preferredFont, flag, advances, advancesIndex,
+                        draw, x, y);
+                start += charCount;
+                advancesIndex += charCount;
+            }
+        }
+        return x;
+    }
+
+    /**
+     * Render the text with the given font.
+     */
+    private float render(int start, int limit, FontInfo font, int flag, float advances[],
+            int advancesIndex, boolean draw, float x, float y) {
+
+        float totalAdvance = 0;
+        // Since the metrics don't have anti-aliasing set, we create a new FontRenderContext with
+        // the anti-aliasing set.
+        FontRenderContext f = font.mMetrics.getFontRenderContext();
+        FontRenderContext frc = new FontRenderContext(f.getTransform(), paint.isAntiAliased(),
+                f.usesFractionalMetrics());
+        GlyphVector gv = font.mFont.layoutGlyphVector(frc, text, start, limit, flag);
+        int ng = gv.getNumGlyphs();
+        int[] ci = gv.getGlyphCharIndices(0, ng, null);
+        for (int i = 0; i < ng; i++) {
+            float adv = gv.getGlyphMetrics(i).getAdvanceX();
+            if (advances != null) {
+                int adv_idx = advancesIndex + ci[i];
+                advances[adv_idx] += adv;
+            }
+            totalAdvance += adv;
+        }
+        if (draw && graphics != null) {
+            graphics.drawGlyphVector(gv, x, y);
+        }
+        return x + totalAdvance;
+    }
+
+    // --- Static helper methods ---
+
+    /* package */  static List<ScriptRun> getScriptRuns(char[] text, int start, int limit,
+            boolean isRtl, List<FontInfo> fonts) {
+        LinkedList<ScriptRun> scriptRuns = new LinkedList<ScriptRun>();
+
+        int count = limit - start;
+        UScriptRun uScriptRun = new UScriptRun(text, start, count);
+        while (uScriptRun.next()) {
+            int scriptStart = uScriptRun.getScriptStart();
+            int scriptLimit = uScriptRun.getScriptLimit();
+            ScriptRun run = new ScriptRun(scriptStart, scriptLimit, isRtl);
+            run.scriptCode = uScriptRun.getScriptCode();
+            setScriptFont(text, run, fonts);
+            scriptRuns.add(run);
+        }
+
+        return scriptRuns;
+    }
+
+    // TODO: Replace this method with one which returns the font based on the scriptCode.
+    private static void setScriptFont(char[] text, ScriptRun run,
+            List<FontInfo> fonts) {
+        for (FontInfo fontInfo : fonts) {
+            if (fontInfo.mFont.canDisplayUpTo(text, run.start, run.limit) == -1) {
+                run.font = fontInfo;
+                return;
+            }
+        }
+        run.font = fonts.get(0);
+    }
+}