Initial Contribution

21 files changed, 1964 insertions, 0 deletions

diff --git a/draw9patch/Android.mk b/draw9patch/Android.mk
new file mode 100644
index 0000000..934495d
--- /dev/null
+++ b/draw9patch/Android.mk
@@ -0,0 +1,17 @@
+# Copyright (C) 2008 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.
+
+DRAW9PATCH_LOCAL_DIR := $(call my-dir)
+include $(DRAW9PATCH_LOCAL_DIR)/etc/Android.mk
+include $(DRAW9PATCH_LOCAL_DIR)/src/Android.mk
diff --git a/draw9patch/MODULE_LICENSE_APACHE2 b/draw9patch/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/draw9patch/MODULE_LICENSE_APACHE2
diff --git a/draw9patch/etc/Android.mk b/draw9patch/etc/Android.mk
new file mode 100644
index 0000000..8d7d080
--- /dev/null
+++ b/draw9patch/etc/Android.mk
@@ -0,0 +1,20 @@
+# Copyright (C) 2008 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.
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_PREBUILT_EXECUTABLES := draw9patch
+include $(BUILD_HOST_PREBUILT)
+
diff --git a/draw9patch/etc/draw9patch b/draw9patch/etc/draw9patch
new file mode 100755
index 0000000..5d272a6
--- /dev/null
+++ b/draw9patch/etc/draw9patch
@@ -0,0 +1,63 @@
+#!/bin/sh
+# Copyright 2008, 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.
+
+# Set up prog to be the path of this script, including following symlinks,
+# and set up progdir to be the fully-qualified pathname of its directory.
+prog="$0"
+while [ -h "${prog}" ]; do
+    newProg=`/bin/ls -ld "${prog}"`
+    newProg=`expr "${newProg}" : ".* -> \(.*\)$"`
+    if expr "x${newProg}" : 'x/' >/dev/null; then
+        prog="${newProg}"
+    else
+        progdir=`dirname "${prog}"`
+        prog="${progdir}/${newProg}"
+    fi
+done
+oldwd=`pwd`
+progdir=`dirname "${prog}"`
+cd "${progdir}"
+progdir=`pwd`
+prog="${progdir}"/`basename "${prog}"`
+cd "${oldwd}"
+
+jarfile=draw9patch.jar
+frameworkdir="$progdir"
+if [ ! -r "$frameworkdir/$jarfile" ]
+then
+    frameworkdir=`dirname "$progdir"`/tools/lib
+    libdir=`dirname "$progdir"`/tools/lib
+fi
+if [ ! -r "$frameworkdir/$jarfile" ]
+then
+    frameworkdir=`dirname "$progdir"`/framework
+    libdir=`dirname "$progdir"`/lib
+fi
+if [ ! -r "$frameworkdir/$jarfile" ]
+then
+    echo `basename "$prog"`": can't find $jarfile"
+    exit 1
+fi
+
+if [ "$OSTYPE" = "cygwin" ] ; then
+    jarpath=`cygpath -w  "$frameworkdir/$jarfile"`
+    progdir=`cygpath -w  "$progdir"`
+else
+    jarpath="$frameworkdir/$jarfile"
+fi
+
+# need to use "java.ext.dirs" because "-jar" causes classpath to be ignored
+# might need more memory, e.g. -Xmx128M
+exec java -Djava.ext.dirs="$frameworkdir" -jar "$jarpath" "$@"
diff --git a/draw9patch/etc/draw9patch.bat b/draw9patch/etc/draw9patch.bat
new file mode 100755
index 0000000..1d56d85
--- /dev/null
+++ b/draw9patch/etc/draw9patch.bat
@@ -0,0 +1,41 @@
+@echo off
+rem Copyright (C) 2008 The Android Open Source Project
+rem
+rem Licensed under the Apache License, Version 2.0 (the "License");
+rem you may not use this file except in compliance with the License.
+rem You may obtain a copy of the License at
+rem
+rem      http://www.apache.org/licenses/LICENSE-2.0
+rem
+rem Unless required by applicable law or agreed to in writing, software
+rem distributed under the License is distributed on an "AS IS" BASIS,
+rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+rem See the License for the specific language governing permissions and
+rem limitations under the License.
+
+rem don't modify the caller's environment
+setlocal
+
+rem Set up prog to be the path of this script, including following symlinks,
+rem and set up progdir to be the fully-qualified pathname of its directory.
+set prog=%~f0
+
+rem Change current directory to where ddms is, to avoid issues with directories
+rem containing whitespaces.
+cd %~dp0
+
+set jarfile=draw9patch.jar
+set frameworkdir=
+set libdir=
+
+if exist %frameworkdir%%jarfile% goto JarFileOk
+    set frameworkdir=lib\
+
+if exist %frameworkdir%%jarfile% goto JarFileOk
+    set frameworkdir=..\framework\
+
+:JarFileOk
+
+set jarpath=%frameworkdir%%jarfile%
+
+call java -Djava.ext.dirs=%frameworkdir% -jar %jarpath% %*
diff --git a/draw9patch/etc/manifest.txt b/draw9patch/etc/manifest.txt
new file mode 100644
index 0000000..b2e3528
--- /dev/null
+++ b/draw9patch/etc/manifest.txt
@@ -0,0 +1,2 @@
+Main-Class: com.android.draw9patch.Application
+Class-Path: swing-worker-1.1.jar
diff --git a/draw9patch/src/Android.mk b/draw9patch/src/Android.mk
new file mode 100644
index 0000000..3dc9db4
--- /dev/null
+++ b/draw9patch/src/Android.mk
@@ -0,0 +1,26 @@
+# Copyright (C) 2008 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.
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(call all-subdir-java-files)
+LOCAL_JAVA_RESOURCE_DIRS := resources
+
+LOCAL_JAR_MANIFEST := ../etc/manifest.txt
+LOCAL_JAVA_LIBRARIES := \
+	swing-worker-1.1
+LOCAL_MODULE := draw9patch
+
+include $(BUILD_HOST_JAVA_LIBRARY)
diff --git a/draw9patch/src/com/android/draw9patch/Application.java b/draw9patch/src/com/android/draw9patch/Application.java
new file mode 100644
index 0000000..c7c6aaf
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/Application.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2008 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.draw9patch;
+
+import com.android.draw9patch.ui.MainFrame;
+
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
+
+public class Application {
+    private static void initUserInterface() {
+        System.setProperty("apple.laf.useScreenMenuBar", "true");
+        System.setProperty("com.apple.mrj.application.apple.menu.about.name", "Draw 9-patch");
+
+        try {
+            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        } catch (InstantiationException e) {
+            e.printStackTrace();
+        } catch (IllegalAccessException e) {
+            e.printStackTrace();
+        } catch (UnsupportedLookAndFeelException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static void main(String... args) {
+        initUserInterface();
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                MainFrame frame = new MainFrame();
+                frame.setDefaultCloseOperation(MainFrame.EXIT_ON_CLOSE);
+                frame.setLocationRelativeTo(null);
+                frame.setVisible(true);
+            }
+        });
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/graphics/GraphicsUtilities.java b/draw9patch/src/com/android/draw9patch/graphics/GraphicsUtilities.java
new file mode 100644
index 0000000..c6c182c
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/graphics/GraphicsUtilities.java
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.graphics;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.awt.image.Raster;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsEnvironment;
+import java.awt.Graphics;
+import java.awt.Transparency;
+import java.net.URL;
+import java.io.IOException;
+
+public class GraphicsUtilities {
+    public static BufferedImage loadCompatibleImage(URL resource) throws IOException {
+        BufferedImage image = ImageIO.read(resource);
+        return toCompatibleImage(image);
+    }
+
+    public static BufferedImage createCompatibleImage(int width, int height) {
+        return getGraphicsConfiguration().createCompatibleImage(width, height);
+    }
+
+    public static BufferedImage toCompatibleImage(BufferedImage image) {
+        if (isHeadless()) {
+            return image;
+        }
+
+        if (image.getColorModel().equals(getGraphicsConfiguration().getColorModel())) {
+            return image;
+        }
+
+        BufferedImage compatibleImage = getGraphicsConfiguration().createCompatibleImage(
+                    image.getWidth(), image.getHeight(), image.getTransparency());
+        Graphics g = compatibleImage.getGraphics();
+        g.drawImage(image, 0, 0, null);
+        g.dispose();
+
+        return compatibleImage;
+    }
+
+    public static BufferedImage createCompatibleImage(BufferedImage image, int width, int height) {
+        return getGraphicsConfiguration().createCompatibleImage(width, height,
+                                                   image.getTransparency());
+    }
+
+    private static GraphicsConfiguration getGraphicsConfiguration() {
+        GraphicsEnvironment environment = GraphicsEnvironment.getLocalGraphicsEnvironment();
+        return environment.getDefaultScreenDevice().getDefaultConfiguration();
+    }
+
+    private static boolean isHeadless() {
+        return GraphicsEnvironment.isHeadless();
+    }
+
+    public static BufferedImage createTranslucentCompatibleImage(int width, int height) {
+        return getGraphicsConfiguration().createCompatibleImage(width, height,
+                Transparency.TRANSLUCENT);
+    }
+
+    public static int[] getPixels(BufferedImage img, int x, int y, int w, int h, int[] pixels) {
+        if (w == 0 || h == 0) {
+            return new int[0];
+        }
+
+        if (pixels == null) {
+            pixels = new int[w * h];
+        } else if (pixels.length < w * h) {
+            throw new IllegalArgumentException("Pixels array must have a length >= w * h");
+        }
+
+        int imageType = img.getType();
+        if (imageType == BufferedImage.TYPE_INT_ARGB || imageType == BufferedImage.TYPE_INT_RGB) {
+            Raster raster = img.getRaster();
+            return (int[]) raster.getDataElements(x, y, w, h, pixels);
+        }
+
+        // Unmanages the image
+        return img.getRGB(x, y, w, h, pixels, 0, w);
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/GradientPanel.java b/draw9patch/src/com/android/draw9patch/ui/GradientPanel.java
new file mode 100644
index 0000000..bc1465f
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/GradientPanel.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui;
+
+import java.awt.Graphics;
+import java.awt.Graphics2D;
+import java.awt.Paint;
+import java.awt.GradientPaint;
+import java.awt.Color;
+import java.awt.Rectangle;
+import java.awt.BorderLayout;
+import javax.swing.JPanel;
+
+class GradientPanel extends JPanel {
+    private static final int DARK_BLUE = 0x202737;
+
+    GradientPanel() {
+        super(new BorderLayout());
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        Graphics2D g2 = (Graphics2D) g;
+        Rectangle clip = g2.getClipBounds();
+        Paint paint = g2.getPaint();
+
+        g2.setPaint(new GradientPaint(0.0f, getHeight() * 0.22f, new Color(DARK_BLUE),
+                                      0.0f, getHeight() * 0.9f, Color.BLACK));
+        g2.fillRect(clip.x, clip.y, clip.width, clip.height);
+
+        g2.setPaint(paint);
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/ImageEditorPanel.java b/draw9patch/src/com/android/draw9patch/ui/ImageEditorPanel.java
new file mode 100644
index 0000000..86c801f
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/ImageEditorPanel.java
@@ -0,0 +1,1129 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui;
+
+import com.android.draw9patch.graphics.GraphicsUtilities;
+
+import javax.swing.JPanel;
+import javax.swing.JLabel;
+import javax.swing.BorderFactory;
+import javax.swing.JSlider;
+import javax.swing.JComponent;
+import javax.swing.JScrollPane;
+import javax.swing.JCheckBox;
+import javax.swing.Box;
+import javax.swing.JFileChooser;
+import javax.swing.JSplitPane;
+import javax.swing.JButton;
+import javax.swing.border.EmptyBorder;
+import javax.swing.event.ChangeListener;
+import javax.swing.event.ChangeEvent;
+import java.awt.image.BufferedImage;
+import java.awt.image.RenderedImage;
+import java.awt.Graphics2D;
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Graphics;
+import java.awt.Dimension;
+import java.awt.TexturePaint;
+import java.awt.Shape;
+import java.awt.BasicStroke;
+import java.awt.RenderingHints;
+import java.awt.Rectangle;
+import java.awt.GridBagLayout;
+import java.awt.GridBagConstraints;
+import java.awt.Insets;
+import java.awt.Toolkit;
+import java.awt.AWTEvent;
+import java.awt.event.MouseMotionAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.event.MouseAdapter;
+import java.awt.event.ActionListener;
+import java.awt.event.ActionEvent;
+import java.awt.event.KeyEvent;
+import java.awt.event.AWTEventListener;
+import java.awt.geom.Rectangle2D;
+import java.awt.geom.Line2D;
+import java.awt.geom.Area;
+import java.awt.geom.RoundRectangle2D;
+import java.io.IOException;
+import java.io.File;
+import java.net.URL;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+class ImageEditorPanel extends JPanel {
+    private static final String EXTENSION_9PATCH = ".9.png";
+    private static final int DEFAULT_ZOOM = 8;
+    private static final float DEFAULT_SCALE = 2.0f;
+
+    private String name;
+    private BufferedImage image;
+    private boolean is9Patch;
+
+    private ImageViewer viewer;
+    private StretchesViewer stretchesViewer;
+    private JLabel xLabel;
+    private JLabel yLabel;
+
+    private TexturePaint texture;    
+
+    private List<Rectangle> patches;
+    private List<Rectangle> horizontalPatches;
+    private List<Rectangle> verticalPatches;
+    private List<Rectangle> fixed;
+    private boolean verticalStartWithPatch;
+    private boolean horizontalStartWithPatch;
+
+    private Pair<Integer> horizontalPadding;
+    private Pair<Integer> verticalPadding;    
+
+    ImageEditorPanel(MainFrame mainFrame, BufferedImage image, String name) {
+        this.image = image;
+        this.name = name;
+
+        setTransferHandler(new ImageTransferHandler(mainFrame));
+
+        checkImage();
+
+        setOpaque(false);
+        setLayout(new BorderLayout());
+
+        loadSupport();
+        buildImageViewer();
+        buildStatusPanel();
+    }
+
+    private void loadSupport() {
+        try {
+            URL resource = getClass().getResource("/images/checker.png");
+            BufferedImage checker = GraphicsUtilities.loadCompatibleImage(resource);
+            texture = new TexturePaint(checker, new Rectangle2D.Double(0, 0,
+                    checker.getWidth(), checker.getHeight()));
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private void buildImageViewer() {
+        viewer = new ImageViewer();
+
+        JSplitPane splitter = new JSplitPane();
+        splitter.setContinuousLayout(true);
+        splitter.setResizeWeight(0.8);
+        splitter.setBorder(null);
+
+        JScrollPane scroller = new JScrollPane(viewer);
+        scroller.setOpaque(false);
+        scroller.setBorder(null);
+        scroller.getViewport().setBorder(null);
+        scroller.getViewport().setOpaque(false);
+
+        splitter.setLeftComponent(scroller);
+        splitter.setRightComponent(buildStretchesViewer());
+
+        add(splitter);
+    }
+
+    private JComponent buildStretchesViewer() {
+        stretchesViewer = new StretchesViewer();
+        JScrollPane scroller = new JScrollPane(stretchesViewer);
+        scroller.setBorder(null);
+        scroller.getViewport().setBorder(null);
+        scroller.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
+        scroller.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
+        return scroller;
+    }
+
+    private void buildStatusPanel() {
+        JPanel status = new JPanel(new GridBagLayout());
+        status.setOpaque(false);
+
+        JLabel label = new JLabel();
+        label.setForeground(Color.WHITE);
+        label.setText("Zoom: ");
+        label.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(label, new GridBagConstraints(0, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_END, GridBagConstraints.NONE,
+                new Insets(0, 6, 0, 0), 0, 0));
+
+        label = new JLabel();
+        label.setForeground(Color.WHITE);
+        label.setText("100%");
+        label.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(label, new GridBagConstraints(1, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_END, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        JSlider zoomSlider = new JSlider(1, 16, DEFAULT_ZOOM);
+        zoomSlider.setSnapToTicks(true);
+        zoomSlider.putClientProperty("JComponent.sizeVariant", "small");
+        zoomSlider.addChangeListener(new ChangeListener() {
+            public void stateChanged(ChangeEvent evt) {
+                viewer.setZoom(((JSlider) evt.getSource()).getValue());
+            }
+        });
+        status.add(zoomSlider, new GridBagConstraints(2, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        JLabel maxZoomLabel = new JLabel();
+        maxZoomLabel.setForeground(Color.WHITE);
+        maxZoomLabel.putClientProperty("JComponent.sizeVariant", "small");
+        maxZoomLabel.setText("800%");
+        status.add(maxZoomLabel, new GridBagConstraints(3, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        label = new JLabel();
+        label.setForeground(Color.WHITE);
+        label.setText("Patch scale: ");
+        label.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(label, new GridBagConstraints(0, 1, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 6, 0, 0), 0, 0));
+
+        label = new JLabel();
+        label.setForeground(Color.WHITE);
+        label.setText("2x");
+        label.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(label, new GridBagConstraints(1, 1, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_END, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        zoomSlider = new JSlider(200, 600, (int) (DEFAULT_SCALE * 100.0f));
+        zoomSlider.setSnapToTicks(true);
+        zoomSlider.putClientProperty("JComponent.sizeVariant", "small");
+        zoomSlider.addChangeListener(new ChangeListener() {
+            public void stateChanged(ChangeEvent evt) {
+                stretchesViewer.setScale(((JSlider) evt.getSource()).getValue() / 100.0f);
+            }
+        });
+        status.add(zoomSlider, new GridBagConstraints(2, 1, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        maxZoomLabel = new JLabel();
+        maxZoomLabel.setForeground(Color.WHITE);
+        maxZoomLabel.putClientProperty("JComponent.sizeVariant", "small");
+        maxZoomLabel.setText("6x");
+        status.add(maxZoomLabel, new GridBagConstraints(3, 1, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        JCheckBox showLock = new JCheckBox("Show lock");
+        showLock.setOpaque(false);
+        showLock.setForeground(Color.WHITE);
+        showLock.setSelected(true);
+        showLock.putClientProperty("JComponent.sizeVariant", "small");
+        showLock.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent event) {
+                viewer.setLockVisible(((JCheckBox) event.getSource()).isSelected());
+            }
+        });
+        status.add(showLock, new GridBagConstraints(4, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 12, 0, 0), 0, 0));
+
+        JCheckBox showPatches = new JCheckBox("Show patches");
+        showPatches.setOpaque(false);
+        showPatches.setForeground(Color.WHITE);
+        showPatches.putClientProperty("JComponent.sizeVariant", "small");
+        showPatches.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent event) {
+                viewer.setPatchesVisible(((JCheckBox) event.getSource()).isSelected());
+            }
+        });
+        status.add(showPatches, new GridBagConstraints(4, 1, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 12, 0, 0), 0, 0));
+
+        JCheckBox showPadding = new JCheckBox("Show content");
+        showPadding.setOpaque(false);
+        showPadding.setForeground(Color.WHITE);
+        showPadding.putClientProperty("JComponent.sizeVariant", "small");
+        showPadding.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent event) {
+                stretchesViewer.setPaddingVisible(((JCheckBox) event.getSource()).isSelected());
+            }
+        });
+        status.add(showPadding, new GridBagConstraints(5, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.NONE,
+                new Insets(0, 12, 0, 0), 0, 0));
+
+        status.add(Box.createHorizontalGlue(), new GridBagConstraints(6, 0, 1, 1, 1.0f, 1.0f,
+                GridBagConstraints.LINE_START, GridBagConstraints.BOTH,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        label = new JLabel("X: ");
+        label.setForeground(Color.WHITE);
+        label.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(label, new GridBagConstraints(7, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_END, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        xLabel = new JLabel("0px");
+        xLabel.setForeground(Color.WHITE);
+        xLabel.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(xLabel, new GridBagConstraints(8, 0, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_END, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 6), 0, 0));
+
+        label = new JLabel("Y: ");
+        label.setForeground(Color.WHITE);
+        label.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(label, new GridBagConstraints(7, 1, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_END, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 0), 0, 0));
+
+        yLabel = new JLabel("0px");
+        yLabel.setForeground(Color.WHITE);
+        yLabel.putClientProperty("JComponent.sizeVariant", "small");
+        status.add(yLabel, new GridBagConstraints(8, 1, 1, 1, 0.0f, 0.0f,
+                GridBagConstraints.LINE_END, GridBagConstraints.NONE,
+                new Insets(0, 0, 0, 6), 0, 0));
+
+        add(status, BorderLayout.SOUTH);
+    }
+
+    private void checkImage() {
+        is9Patch = name.endsWith(EXTENSION_9PATCH);
+        if (!is9Patch) {
+            convertTo9Patch();
+        } else {
+            ensure9Patch();
+        }
+    }
+
+    private void ensure9Patch() {
+        int width = image.getWidth();
+        int height = image.getHeight();
+        for (int i = 0; i < width; i++) {
+            int pixel = image.getRGB(i, 0);
+            if (pixel != 0 && pixel != 0xFF000000) {
+                image.setRGB(i, 0, 0);
+            }
+            pixel = image.getRGB(i, height - 1);
+            if (pixel != 0 && pixel != 0xFF000000) {
+                image.setRGB(i, height - 1, 0);
+            }
+        }
+        for (int i = 0; i < height; i++) {
+            int pixel = image.getRGB(0, i);
+            if (pixel != 0 && pixel != 0xFF000000) {
+                image.setRGB(0, i, 0);
+            }
+            pixel = image.getRGB(width - 1, i);
+            if (pixel != 0 && pixel != 0xFF000000) {
+                image.setRGB(width - 1, i, 0);
+            }
+        }
+    }
+
+    private void convertTo9Patch() {
+        BufferedImage buffer = GraphicsUtilities.createTranslucentCompatibleImage(
+                image.getWidth() + 2, image.getHeight() + 2);
+
+        Graphics2D g2 = buffer.createGraphics();
+        g2.drawImage(image, 1, 1, null);
+        g2.dispose();
+
+        image = buffer;
+        name = name.substring(0, name.lastIndexOf('.')) + ".9.png";
+    }
+
+    File chooseSaveFile() {
+        if (is9Patch) {
+            return new File(name);
+        } else {
+            JFileChooser chooser = new JFileChooser();
+            chooser.setFileFilter(new PngFileFilter());
+            int choice = chooser.showSaveDialog(this);
+            if (choice == JFileChooser.APPROVE_OPTION) {
+                File file = chooser.getSelectedFile();
+                if (!file.getAbsolutePath().endsWith(EXTENSION_9PATCH)) {
+                    String path = file.getAbsolutePath();
+                    if (path.endsWith(".png")) {
+                        path = path.substring(0, path.lastIndexOf(".png")) + EXTENSION_9PATCH;
+                    } else {
+                        path = path + EXTENSION_9PATCH;
+                    }
+                    name = path;
+                    is9Patch = true;
+                    return new File(path);
+                }
+                is9Patch = true;
+                return file;
+            }
+        }
+        return null;
+    }
+
+    RenderedImage getImage() {
+        return image;
+    }
+
+    private class StretchesViewer extends JPanel {
+        private static final int MARGIN = 24;
+
+        private StretchView horizontal;
+        private StretchView vertical;
+        private StretchView both;
+
+        private Dimension size;
+
+        private float horizontalPatchesSum;
+        private float verticalPatchesSum;
+
+        private boolean showPadding;
+
+        StretchesViewer() {
+            setOpaque(false);
+            setLayout(new GridBagLayout());
+            setBorder(BorderFactory.createEmptyBorder(MARGIN, MARGIN, MARGIN, MARGIN));
+
+            horizontal = new StretchView();
+            vertical = new StretchView();
+            both = new StretchView();
+
+            setScale(DEFAULT_SCALE);
+            
+            add(vertical, new GridBagConstraints(0, 0, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER,
+                    GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
+            add(horizontal, new GridBagConstraints(0, 1, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER,
+                    GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
+            add(both, new GridBagConstraints(0, 2, 1, 1, 1.0, 1.0, GridBagConstraints.CENTER,
+                    GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
+        }
+
+        @Override
+        protected void paintComponent(Graphics g) {
+            Graphics2D g2 = (Graphics2D) g.create();
+            g2.setPaint(texture);
+            g2.fillRect(0, 0, getWidth(), getHeight());
+            g2.dispose();
+        }
+
+        void setScale(float scale) {
+            int patchWidth = image.getWidth() - 2;
+            int patchHeight = image.getHeight() - 2;
+
+            int scaledWidth = (int) (patchWidth * scale);
+            int scaledHeight = (int) (patchHeight * scale);
+
+            horizontal.scaledWidth = scaledWidth;
+            vertical.scaledHeight = scaledHeight;
+            both.scaledWidth = scaledWidth;
+            both.scaledHeight = scaledHeight;
+
+            size = new Dimension(scaledWidth, scaledHeight);
+
+            computePatches();
+        }
+
+        void computePatches() {
+            boolean measuredWidth = false;
+            boolean endRow = true;
+
+            int remainderHorizontal = 0;
+            int remainderVertical = 0;
+
+            if (fixed.size() > 0) {
+                int start = fixed.get(0).y;
+                for (Rectangle rect : fixed) {
+                    if (rect.y > start) {
+                        endRow = true;
+                        measuredWidth = true;
+                    }
+                    if (!measuredWidth) {
+                        remainderHorizontal += rect.width;
+                    }
+                    if (endRow) {
+                        remainderVertical += rect.height;
+                        endRow = false;
+                        start = rect.y;
+                    }
+                }
+            }
+
+            horizontal.remainderHorizontal = horizontal.scaledWidth - remainderHorizontal;
+            vertical.remainderHorizontal = vertical.scaledWidth - remainderHorizontal;
+            both.remainderHorizontal = both.scaledWidth - remainderHorizontal;
+
+            horizontal.remainderVertical = horizontal.scaledHeight - remainderVertical;
+            vertical.remainderVertical = vertical.scaledHeight - remainderVertical;
+            both.remainderVertical = both.scaledHeight - remainderVertical;
+
+            horizontalPatchesSum = 0;
+            if (horizontalPatches.size() > 0) {
+                int start = -1;
+                for (Rectangle rect : horizontalPatches) {
+                    if (rect.x > start) {
+                        horizontalPatchesSum += rect.width;
+                        start = rect.x;
+                    }
+                }
+            }
+
+            verticalPatchesSum = 0;
+            if (verticalPatches.size() > 0) {
+                int start = -1;
+                for (Rectangle rect : verticalPatches) {
+                    if (rect.y > start) {
+                        verticalPatchesSum += rect.height;
+                        start = rect.y;
+                    }
+                }
+            }
+
+            setSize(size);
+            ImageEditorPanel.this.validate();
+            repaint();
+        }
+
+        void setPaddingVisible(boolean visible) {
+            showPadding = visible;
+            repaint();
+        }
+
+        private class StretchView extends JComponent {
+            private final Color PADDING_COLOR = new Color(0.37f, 0.37f, 1.0f, 0.5f);
+
+            int scaledWidth;
+            int scaledHeight;
+
+            int remainderHorizontal;
+            int remainderVertical;
+
+            StretchView() {
+                scaledWidth = image.getWidth();
+                scaledHeight = image.getHeight();
+            }
+
+            @Override
+            protected void paintComponent(Graphics g) {
+                int x = (getWidth() - scaledWidth) / 2;
+                int y = (getHeight() - scaledHeight) / 2;
+
+                Graphics2D g2 = (Graphics2D) g.create();
+                g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+                        RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+                g.translate(x, y);
+
+                x = 0;
+                y = 0;
+
+                if (patches.size() == 0 || horizontalPatches.size() == 0 ||
+                        verticalPatches.size() == 0) {
+                    g.drawImage(image, 0, 0, scaledWidth, scaledHeight, null);
+                    g2.dispose();
+                    return;
+                }
+
+                int fixedIndex = 0;
+                int horizontalIndex = 0;
+                int verticalIndex = 0;
+                int patchIndex = 0;
+
+                boolean hStretch;
+                boolean vStretch;
+
+                float vWeightSum = 1.0f;
+                float vRemainder = remainderVertical;
+
+                vStretch = verticalStartWithPatch;
+                while (y < scaledHeight - 1) {
+                    hStretch = horizontalStartWithPatch;
+
+                    int height = 0;
+                    float vExtra = 0.0f;
+
+                    float hWeightSum = 1.0f;
+                    float hRemainder = remainderHorizontal;
+
+                    while (x < scaledWidth - 1) {
+                        Rectangle r;
+                        if (!vStretch) {
+                            if (hStretch) {
+                                r = horizontalPatches.get(horizontalIndex++);
+                                float extra = r.width / horizontalPatchesSum;
+                                int width = (int) (extra * hRemainder / hWeightSum);
+                                hWeightSum -= extra;
+                                hRemainder -= width;
+                                g.drawImage(image, x, y, x + width, y + r.height, r.x, r.y,
+                                        r.x + r.width, r.y + r.height, null);
+                                x += width;
+                            } else {
+                                r = fixed.get(fixedIndex++);
+                                g.drawImage(image, x, y, x + r.width, y + r.height, r.x, r.y,
+                                        r.x + r.width, r.y + r.height, null);
+                                x += r.width;
+                            }
+                            height = r.height;
+                        } else {
+                            if (hStretch) {
+                                r = patches.get(patchIndex++);
+                                vExtra = r.height / verticalPatchesSum;
+                                height = (int) (vExtra * vRemainder / vWeightSum);
+                                float extra = r.width / horizontalPatchesSum;
+                                int width = (int) (extra * hRemainder / hWeightSum);
+                                hWeightSum -= extra;
+                                hRemainder -= width;
+                                g.drawImage(image, x, y, x + width, y + height, r.x, r.y,
+                                        r.x + r.width, r.y + r.height, null);
+                                x += width;
+                            } else {
+                                r = verticalPatches.get(verticalIndex++);
+                                vExtra = r.height / verticalPatchesSum;
+                                height = (int) (vExtra * vRemainder / vWeightSum);
+                                g.drawImage(image, x, y, x + r.width, y + height, r.x, r.y,
+                                        r.x + r.width, r.y + r.height, null);
+                                x += r.width;
+                            }
+                            
+                        }
+                        hStretch = !hStretch;
+                    }
+                    x = 0;
+                    y += height;
+                    if (vStretch) {
+                        vWeightSum -= vExtra;
+                        vRemainder -= height;
+                    }
+                    vStretch = !vStretch;
+                }
+
+                if (showPadding) {
+                    g.setColor(PADDING_COLOR);
+                    g.fillRect(horizontalPadding.first, verticalPadding.first,
+                            scaledWidth - horizontalPadding.first - horizontalPadding.second,
+                            scaledHeight - verticalPadding.first - verticalPadding.second);
+                }
+
+                g2.dispose();
+            }
+
+            @Override
+            public Dimension getPreferredSize() {
+                return size;
+            }
+        }
+    }
+
+    private class ImageViewer extends JComponent {
+        private final Color CORRUPTED_COLOR = new Color(1.0f, 0.0f, 0.0f, 0.7f);
+        private final Color LOCK_COLOR = new Color(0.0f, 0.0f, 0.0f, 0.7f);
+        private final Color STRIPES_COLOR = new Color(1.0f, 0.0f, 0.0f, 0.5f);
+        private final Color BACK_COLOR = new Color(0xc0c0c0);
+        private final Color HELP_COLOR = new Color(0xffffe1);
+        private final Color PATCH_COLOR = new Color(1.0f, 0.37f, 0.99f, 0.5f);
+        private final Color PATCH_ONEWAY_COLOR = new Color(0.37f, 1.0f, 0.37f, 0.5f);
+
+        private static final float STRIPES_WIDTH = 4.0f;
+        private static final double STRIPES_SPACING = 6.0;
+        private static final int STRIPES_ANGLE = 45;
+
+        private int zoom;
+        private boolean showPatches;
+        private boolean showLock = true;
+
+        private Dimension size;
+
+        private boolean locked;
+
+        private int[] row;
+        private int[] column;
+
+        private int lastPositionX;
+        private int lastPositionY;
+        private boolean showCursor;
+
+        private JLabel helpLabel;
+        private boolean eraseMode;
+
+        private JButton checkButton;
+        private List<Rectangle> corruptedPatches;
+        private boolean showBadPatches;
+
+        private JPanel helpPanel;
+
+        ImageViewer() {
+            setLayout(new GridBagLayout());
+            helpPanel = new JPanel(new BorderLayout());
+            helpPanel.setBorder(new EmptyBorder(0, 6, 0, 6));
+            helpPanel.setBackground(HELP_COLOR);
+            helpLabel = new JLabel("Press Shift to erase pixels");
+            helpLabel.putClientProperty("JComponent.sizeVariant", "small");            
+            helpPanel.add(helpLabel, BorderLayout.WEST);
+            checkButton = new JButton("Show bad patches");
+            checkButton.putClientProperty("JComponent.sizeVariant", "small");
+            checkButton.putClientProperty("JButton.buttonType", "roundRect");
+            helpPanel.add(checkButton, BorderLayout.EAST);
+
+            add(helpPanel, new GridBagConstraints(0, 0, 1, 1,
+                    1.0f, 1.0f, GridBagConstraints.FIRST_LINE_START, GridBagConstraints.HORIZONTAL,
+                    new Insets(0, 0, 0, 0), 0, 0));
+
+            setOpaque(true);
+
+            setZoom(DEFAULT_ZOOM);
+            findPatches();
+
+            addMouseListener(new MouseAdapter() {
+                @Override
+                public void mousePressed(MouseEvent event) {
+                    paint(event.getX(), event.getY(), event.isShiftDown() ? MouseEvent.BUTTON3 :
+                                event.getButton());
+                }
+            });
+            addMouseMotionListener(new MouseMotionAdapter() {
+                @Override
+                public void mouseDragged(MouseEvent event) {
+                    if (!checkLockedRegion(event.getX(), event.getY())) {
+                        paint(event.getX(), event.getY(), event.isShiftDown() ? MouseEvent.BUTTON3 :
+                                event.getButton());
+                    }
+                }
+
+                @Override
+                public void mouseMoved(MouseEvent event) {
+                    checkLockedRegion(event.getX(), event.getY());
+                }
+            });
+            Toolkit.getDefaultToolkit().addAWTEventListener(new AWTEventListener() {
+                public void eventDispatched(AWTEvent event) {
+                    enableEraseMode((KeyEvent) event);                    
+                }
+            }, AWTEvent.KEY_EVENT_MASK);
+
+            checkButton.addActionListener(new ActionListener() {
+                public void actionPerformed(ActionEvent event) {
+                    if (!showBadPatches) {
+                        findBadPatches();
+                        checkButton.setText("Hide bad patches");
+                    } else {
+                        checkButton.setText("Show bad patches");
+                        corruptedPatches = null;
+                    }
+                    repaint();
+                    showBadPatches = !showBadPatches;
+                }
+            });
+        }
+
+        private void findBadPatches() {
+            corruptedPatches = new ArrayList<Rectangle>();
+
+            for (Rectangle patch : patches) {
+                if (corruptPatch(patch)) {
+                    corruptedPatches.add(patch);
+                }
+            }
+
+            for (Rectangle patch : horizontalPatches) {
+                if (corruptHorizontalPatch(patch)) {
+                    corruptedPatches.add(patch);
+                }
+            }
+
+            for (Rectangle patch : verticalPatches) {
+                if (corruptVerticalPatch(patch)) {
+                    corruptedPatches.add(patch);
+                }
+            }
+        }
+
+        private boolean corruptPatch(Rectangle patch) {
+            int[] pixels = GraphicsUtilities.getPixels(image, patch.x, patch.y,
+                    patch.width, patch.height, null);
+
+            if (pixels.length > 0) {
+                int reference = pixels[0];
+                for (int pixel : pixels) {
+                    if (pixel != reference) {
+                        return true;
+                    }
+                }
+            }
+
+            return false;
+        }
+
+        private boolean corruptHorizontalPatch(Rectangle patch) {
+            int[] reference = new int[patch.height];
+            int[] column = new int[patch.height];
+            reference = GraphicsUtilities.getPixels(image, patch.x, patch.y,
+                    1, patch.height, reference);
+
+            for (int i = 1; i < patch.width; i++) {
+                column = GraphicsUtilities.getPixels(image, patch.x + i, patch.y,
+                        1, patch.height, column);
+                if (!Arrays.equals(reference, column)) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        private boolean corruptVerticalPatch(Rectangle patch) {
+            int[] reference = new int[patch.width];
+            int[] row = new int[patch.width];
+            reference = GraphicsUtilities.getPixels(image, patch.x, patch.y,
+                    patch.width, 1, reference);
+
+            for (int i = 1; i < patch.height; i++) {
+                row = GraphicsUtilities.getPixels(image, patch.x, patch.y + i, patch.width, 1, row);
+                if (!Arrays.equals(reference, row)) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        private void enableEraseMode(KeyEvent event) {
+            boolean oldEraseMode = eraseMode;
+            eraseMode = event.isShiftDown();
+            if (eraseMode != oldEraseMode) {
+                if (eraseMode) {
+                    helpLabel.setText("Release Shift to draw pixels");
+                } else {
+                    helpLabel.setText("Press Shift to erase pixels");
+                }
+            }
+        }
+
+        private void paint(int x, int y, int button) {
+            int color;
+            switch (button) {
+                case MouseEvent.BUTTON1:
+                    color = 0xFF000000;
+                    break;
+                case MouseEvent.BUTTON3:
+                    color = 0;
+                    break;
+                default:
+                    return;
+            }
+
+            int left = (getWidth() - size.width) / 2;
+            int top = (helpPanel.getHeight() + getHeight() - size.height) / 2;
+
+            x = (x - left) / zoom;
+            y = (y - top) / zoom;
+
+            int width = image.getWidth();
+            int height = image.getHeight();
+            if (((x == 0 || x == width - 1) && (y > 0 && y < height - 1)) ||
+                    ((x > 0 && x < width - 1) && (y == 0 || y == height - 1))) {
+                image.setRGB(x, y, color);
+                findPatches();
+                stretchesViewer.computePatches();
+                if (showBadPatches) {
+                    findBadPatches();
+                }
+                repaint();
+            }
+        }
+
+        private boolean checkLockedRegion(int x, int y) {
+            int oldX = lastPositionX;
+            int oldY = lastPositionY;
+            lastPositionX = x;
+            lastPositionY = y;
+
+            int left = (getWidth() - size.width) / 2;
+            int top = (helpPanel.getHeight() + getHeight() - size.height) / 2;
+
+            x = (x - left) / zoom;
+            y = (y - top) / zoom;
+
+            int width = image.getWidth();
+            int height = image.getHeight();
+
+            xLabel.setText(Math.max(0, Math.min(x, width - 1)) + " px");
+            yLabel.setText(Math.max(0, Math.min(y, height - 1)) + " px");
+
+            boolean previousLock = locked;
+            locked = x > 0 && x < width - 1 && y > 0 && y < height - 1;
+
+            boolean previousCursor = showCursor;
+            showCursor = ((x == 0 || x == width - 1) && (y > 0 && y < height - 1)) ||
+                    ((x > 0 && x < width - 1) && (y == 0 || y == height - 1));
+
+            if (locked != previousLock) {
+                repaint();
+            } else if (showCursor || (showCursor != previousCursor)) {
+                Rectangle clip = new Rectangle(lastPositionX - 1 - zoom / 2,
+                        lastPositionY - 1 - zoom / 2, zoom + 2, zoom + 2);
+                clip = clip.union(new Rectangle(oldX - 1 - zoom / 2,
+                        oldY - 1 - zoom / 2, zoom + 2, zoom + 2));
+                repaint(clip);
+            }
+
+            return locked;
+        }
+
+        @Override
+        protected void paintComponent(Graphics g) {
+            int x = (getWidth() - size.width) / 2;
+            int y = (helpPanel.getHeight() + getHeight() - size.height) / 2;
+
+            Graphics2D g2 = (Graphics2D) g.create();
+            g2.setColor(BACK_COLOR);
+            g2.fillRect(0, 0, getWidth(), getHeight());
+
+            g2.translate(x, y);
+            g2.setPaint(texture);
+            g2.fillRect(0, 0, size.width, size.height);
+            g2.scale(zoom, zoom);
+            g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
+                    RenderingHints.VALUE_ANTIALIAS_ON);
+            g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+                    RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
+            g2.drawImage(image, 0, 0, null);
+
+            if (showPatches) {
+                g2.setColor(PATCH_COLOR);
+                for (Rectangle patch : patches) {
+                    g2.fillRect(patch.x, patch.y, patch.width, patch.height);
+                }
+                g2.setColor(PATCH_ONEWAY_COLOR);
+                for (Rectangle patch : horizontalPatches) {
+                    g2.fillRect(patch.x, patch.y, patch.width, patch.height);
+                }
+                for (Rectangle patch : verticalPatches) {
+                    g2.fillRect(patch.x, patch.y, patch.width, patch.height);
+                }
+            }
+
+            if (corruptedPatches != null) {
+                g2.setColor(CORRUPTED_COLOR);
+                g2.setStroke(new BasicStroke(3.0f / zoom));
+                for (Rectangle patch : corruptedPatches) {
+                    g2.draw(new RoundRectangle2D.Float(patch.x - 2.0f / zoom, patch.y - 2.0f / zoom,
+                            patch.width + 2.0f / zoom, patch.height + 2.0f / zoom,
+                            6.0f / zoom, 6.0f / zoom));
+                }
+            }
+
+            if (showLock && locked) {
+                int width = image.getWidth();
+                int height = image.getHeight();
+
+                g2.setColor(LOCK_COLOR);
+                g2.fillRect(1, 1, width - 2, height - 2);
+
+                g2.setColor(STRIPES_COLOR);
+                g2.translate(1, 1);
+                paintStripes(g2, width - 2, height - 2);
+                g2.translate(-1, -1);
+            }
+
+            g2.dispose();
+
+            if (showCursor) {
+                Graphics cursor = g.create();
+                cursor.setXORMode(Color.WHITE);
+                cursor.setColor(Color.BLACK);
+                cursor.drawRect(lastPositionX - zoom / 2, lastPositionY - zoom / 2, zoom, zoom);
+                cursor.dispose();
+            }
+        }
+
+        private void paintStripes(Graphics2D g, int width, int height) {
+            //draws pinstripes at the angle specified in this class
+            //and at the given distance apart
+            Shape oldClip = g.getClip();
+            Area area = new Area(new Rectangle(0, 0, width, height));
+            if(oldClip != null) {
+                area = new Area(oldClip);
+            }
+            area.intersect(new Area(new Rectangle(0,0,width,height)));
+            g.setClip(area);
+
+            g.setStroke(new BasicStroke(STRIPES_WIDTH));
+
+            double hypLength = Math.sqrt((width * width) +
+                    (height * height));
+
+            double radians = Math.toRadians(STRIPES_ANGLE);
+            g.rotate(radians);
+
+            double spacing = STRIPES_SPACING;
+            spacing += STRIPES_WIDTH;
+            int numLines = (int)(hypLength / spacing);
+
+            for (int i=0; i<numLines; i++) {
+                double x = i * spacing;
+                Line2D line = new Line2D.Double(x, -hypLength, x, hypLength);
+                g.draw(line);
+            }
+            g.setClip(oldClip);
+        }
+
+        @Override
+        public Dimension getPreferredSize() {
+            return size;
+        }
+
+        void setZoom(int value) {
+            int width = image.getWidth();
+            int height = image.getHeight();
+
+            zoom = value;
+            size = new Dimension(width * zoom, height * zoom);
+
+            setSize(size);
+            ImageEditorPanel.this.validate();
+            repaint();
+        }
+
+        void setPatchesVisible(boolean visible) {
+            showPatches = visible;
+            findPatches();
+            repaint();
+        }
+
+        private void findPatches() {
+            int width = image.getWidth();
+            int height = image.getHeight();
+
+            row = GraphicsUtilities.getPixels(image, 0, 0, width, 1, row);
+            column = GraphicsUtilities.getPixels(image, 0, 0, 1, height, column);
+
+            boolean[] result = new boolean[1];
+            Pair<List<Pair<Integer>>> left = getPatches(column, result);
+            verticalStartWithPatch = result[0];
+
+            result = new boolean[1];
+            Pair<List<Pair<Integer>>> top = getPatches(row, result);
+            horizontalStartWithPatch = result[0];
+
+            fixed = getRectangles(left.first, top.first);
+            patches = getRectangles(left.second, top.second);
+
+            if (fixed.size() > 0) {
+                horizontalPatches = getRectangles(left.first, top.second);
+                verticalPatches = getRectangles(left.second, top.first);
+            } else {
+                horizontalPatches = verticalPatches = new ArrayList<Rectangle>(0);
+            }
+
+            row = GraphicsUtilities.getPixels(image, 0, height - 1, width, 1, row);
+            column = GraphicsUtilities.getPixels(image, width - 1, 0, 1, height, column);
+
+            top = getPatches(row, result);
+            horizontalPadding = getPadding(top.first);
+
+            left = getPatches(column, result);
+            verticalPadding = getPadding(left.first);
+        }
+
+        private Pair<Integer> getPadding(List<Pair<Integer>> pairs) {
+            if (pairs.size() == 0) {
+                return new Pair<Integer>(0, 0);
+            } else if (pairs.size() == 1) {
+                if (pairs.get(0).first == 1) {
+                    return new Pair<Integer>(pairs.get(0).second - pairs.get(0).first, 0);
+                } else {
+                    return new Pair<Integer>(0, pairs.get(0).second - pairs.get(0).first);                    
+                }
+            } else {
+                int index = pairs.size() - 1;
+                return new Pair<Integer>(pairs.get(0).second - pairs.get(0).first,
+                        pairs.get(index).second - pairs.get(index).first);
+            }
+        }
+
+        private List<Rectangle> getRectangles(List<Pair<Integer>> leftPairs,
+                List<Pair<Integer>> topPairs) {
+            List<Rectangle> rectangles = new ArrayList<Rectangle>();
+            for (Pair<Integer> left : leftPairs) {
+                int y = left.first;
+                int height = left.second - left.first;
+                for (Pair<Integer> top: topPairs) {
+                    int x = top.first;
+                    int width = top.second - top.first;
+
+                    rectangles.add(new Rectangle(x, y, width, height));
+                }
+            }
+            return rectangles;
+        }
+
+        private Pair<List<Pair<Integer>>> getPatches(int[] pixels, boolean[] startWithPatch) {
+            int lastIndex = 1;
+            int lastPixel = pixels[1];
+            boolean first = true;
+
+            List<Pair<Integer>> fixed = new ArrayList<Pair<Integer>>();
+            List<Pair<Integer>> patches = new ArrayList<Pair<Integer>>();
+
+            for (int i = 1; i < pixels.length - 1; i++) {
+                int pixel = pixels[i];
+                if (pixel != lastPixel) {
+                    if (lastPixel == 0xFF000000) {
+                        if (first) startWithPatch[0] = true;
+                        patches.add(new Pair<Integer>(lastIndex, i));
+                    } else {
+                        fixed.add(new Pair<Integer>(lastIndex, i));
+                    }
+                    first = false;
+
+                    lastIndex = i;
+                    lastPixel = pixel;
+                }
+            }
+            if (lastPixel == 0xFF000000) {
+                if (first) startWithPatch[0] = true;
+                patches.add(new Pair<Integer>(lastIndex, pixels.length - 1));
+            } else {
+                fixed.add(new Pair<Integer>(lastIndex, pixels.length - 1));
+            }
+
+            if (patches.size() == 0) {
+                patches.add(new Pair<Integer>(1, pixels.length - 1));
+                startWithPatch[0] = true;
+                fixed.clear();
+            }
+            return new Pair<List<Pair<Integer>>>(fixed, patches);
+        }
+
+        void setLockVisible(boolean visible) {
+            showLock = visible;
+            repaint();
+        }
+    }
+
+    static class Pair<E> {
+        E first;
+        E second;
+
+        Pair(E first, E second) {
+            this.first = first;
+            this.second = second;
+        }
+
+        @Override
+        public String toString() {
+            return "Pair[" + first + ", " + second + "]";
+        }
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/ImageTransferHandler.java b/draw9patch/src/com/android/draw9patch/ui/ImageTransferHandler.java
new file mode 100644
index 0000000..a62884f
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/ImageTransferHandler.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui;
+
+import javax.swing.TransferHandler;
+import javax.swing.JComponent;
+import java.awt.datatransfer.Transferable;
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+import java.net.MalformedURLException;
+
+class ImageTransferHandler extends TransferHandler {
+    private final MainFrame mainFrame;
+
+    ImageTransferHandler(MainFrame mainFrame) {
+        this.mainFrame = mainFrame;
+    }
+
+    @Override
+    public boolean importData(JComponent component, Transferable transferable) {
+        try {
+            Object data = transferable.getTransferData(DataFlavor.javaFileListFlavor);
+            //noinspection unchecked
+            final File file = ((List<File>) data).get(0);
+            mainFrame.open(file).execute();
+        } catch (UnsupportedFlavorException e) {
+            return false;
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return true;
+    }
+
+    @Override
+    public boolean canImport(JComponent component, DataFlavor[] dataFlavors) {
+        for (DataFlavor flavor : dataFlavors) {
+            if (flavor.isFlavorJavaFileListType()) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/MainFrame.java b/draw9patch/src/com/android/draw9patch/ui/MainFrame.java
new file mode 100644
index 0000000..9ffd93e
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/MainFrame.java
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui;
+
+import com.android.draw9patch.ui.action.ExitAction;
+import com.android.draw9patch.ui.action.OpenAction;
+import com.android.draw9patch.ui.action.SaveAction;
+import com.android.draw9patch.graphics.GraphicsUtilities;
+
+import javax.swing.JFrame;
+import javax.swing.JMenuBar;
+import javax.swing.JMenu;
+import javax.swing.JMenuItem;
+import javax.swing.ActionMap;
+import javax.swing.JFileChooser;
+import javax.imageio.ImageIO;
+import java.awt.HeadlessException;
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.util.concurrent.ExecutionException;
+
+import org.jdesktop.swingworker.SwingWorker;
+
+public class MainFrame extends JFrame {
+    private ActionMap actionsMap;
+    private JMenuItem saveMenuItem;
+    private ImageEditorPanel imageEditor;
+
+    public MainFrame() throws HeadlessException {
+        super("Draw 9-patch");
+
+        buildActions();
+        buildMenuBar();
+        buildContent();
+
+        showOpenFilePanel();
+
+        // pack();
+        setSize(1024, 600);
+    }
+
+    private void buildActions() {
+        actionsMap = new ActionMap();
+        actionsMap.put(OpenAction.ACTION_NAME, new OpenAction(this));
+        actionsMap.put(SaveAction.ACTION_NAME, new SaveAction(this));
+        actionsMap.put(ExitAction.ACTION_NAME, new ExitAction(this));
+    }
+
+    private void buildMenuBar() {
+        JMenu fileMenu = new JMenu("File");
+        JMenuItem openMenuItem = new JMenuItem();
+        saveMenuItem = new JMenuItem();
+        JMenuItem exitMenuItem = new JMenuItem();
+
+        openMenuItem.setAction(actionsMap.get(OpenAction.ACTION_NAME));
+        fileMenu.add(openMenuItem);
+
+        saveMenuItem.setAction(actionsMap.get(SaveAction.ACTION_NAME));
+        saveMenuItem.setEnabled(false);
+        fileMenu.add(saveMenuItem);
+
+        exitMenuItem.setAction(actionsMap.get(ExitAction.ACTION_NAME));
+        fileMenu.add(exitMenuItem);
+
+        JMenuBar menuBar = new JMenuBar();
+        menuBar.add(fileMenu);
+        setJMenuBar(menuBar);
+    }
+
+    private void buildContent() {
+        setContentPane(new GradientPanel());
+    }
+
+    private void showOpenFilePanel() {
+        add(new OpenFilePanel(this));
+    }
+
+    public SwingWorker<?, ?> open(File file) {
+        if (file == null) {
+            JFileChooser chooser = new JFileChooser();
+            chooser.setFileFilter(new PngFileFilter());
+            int choice = chooser.showOpenDialog(this);
+            if (choice == JFileChooser.APPROVE_OPTION) {
+                return new OpenTask(chooser.getSelectedFile());
+            } else {
+                return null;
+            }
+        } else {
+            return new OpenTask(file);
+        }
+    }
+
+    void showImageEditor(BufferedImage image, String name) {
+        getContentPane().removeAll();
+        imageEditor = new ImageEditorPanel(this, image, name);
+        add(imageEditor);
+        saveMenuItem.setEnabled(true);
+        validate();
+        repaint();
+    }
+
+    public SwingWorker<?, ?> save() {
+        if (imageEditor == null) {
+            return null;
+        }
+
+        File file = imageEditor.chooseSaveFile();
+        return file != null ? new SaveTask(file) : null;
+    }
+
+    private class SaveTask extends SwingWorker<Boolean, Void> {
+        private final File file;
+
+        SaveTask(File file) {
+            this.file = file;
+        }
+
+        protected Boolean doInBackground() throws Exception {
+            try {
+                ImageIO.write(imageEditor.getImage(), "PNG", file);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+            return true;
+        }
+    }
+
+    private class OpenTask extends SwingWorker<BufferedImage, Void> {
+        private final File file;
+
+        OpenTask(File file) {
+            this.file = file;
+        }
+
+        protected BufferedImage doInBackground() throws Exception {
+            return GraphicsUtilities.loadCompatibleImage(file.toURI().toURL());
+        }
+
+        @Override
+        protected void done() {
+            try {
+                showImageEditor(get(), file.getAbsolutePath());
+            } catch (InterruptedException e) {
+                e.printStackTrace();
+            } catch (ExecutionException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/OpenFilePanel.java b/draw9patch/src/com/android/draw9patch/ui/OpenFilePanel.java
new file mode 100644
index 0000000..a444332
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/OpenFilePanel.java
@@ -0,0 +1,51 @@
+package com.android.draw9patch.ui;
+
+import com.android.draw9patch.graphics.GraphicsUtilities;
+
+import javax.swing.JComponent;
+import java.awt.image.BufferedImage;
+import java.awt.Graphics;
+import java.io.IOException;
+import java.net.URL;/*
+ * Copyright (C) 2008 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.
+ */
+
+class OpenFilePanel extends JComponent {
+    private BufferedImage dropHere;
+
+    OpenFilePanel(MainFrame mainFrame) {
+        setOpaque(false);
+        loadSupportImage();
+        setTransferHandler(new ImageTransferHandler(mainFrame));
+    }
+
+    private void loadSupportImage() {
+        try {
+            URL resource = getClass().getResource("/images/drop.png");
+            dropHere = GraphicsUtilities.loadCompatibleImage(resource);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void paintComponent(Graphics g) {
+        int x = (getWidth() - dropHere.getWidth()) / 2;
+        int y = (getHeight() - dropHere.getHeight()) / 2;
+
+        g.drawImage(dropHere, x, y, null);
+    }
+
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/PngFileFilter.java b/draw9patch/src/com/android/draw9patch/ui/PngFileFilter.java
new file mode 100644
index 0000000..8f8885a
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/PngFileFilter.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui;
+
+import javax.swing.filechooser.FileFilter;
+import java.io.File;
+
+class PngFileFilter extends FileFilter {
+    @Override
+    public boolean accept(File f) {
+        return f.isDirectory() || f.getName().toLowerCase().endsWith(".png");
+    }
+
+    @Override
+    public String getDescription() {
+        return "PNG Image (*.png)";
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/action/BackgroundAction.java b/draw9patch/src/com/android/draw9patch/ui/action/BackgroundAction.java
new file mode 100644
index 0000000..85d9d4f
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/action/BackgroundAction.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui.action;
+
+import org.jdesktop.swingworker.SwingWorker;
+
+import javax.swing.AbstractAction;
+
+public abstract class BackgroundAction extends AbstractAction {
+    protected void executeBackgroundTask(SwingWorker<?, ?> worker) {
+        if (worker != null) {
+            worker.execute();
+        }
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/action/ExitAction.java b/draw9patch/src/com/android/draw9patch/ui/action/ExitAction.java
new file mode 100644
index 0000000..b6f047d
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/action/ExitAction.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui.action;
+
+import javax.swing.AbstractAction;
+import javax.swing.KeyStroke;
+import javax.swing.JFrame;
+import java.awt.event.KeyEvent;
+import java.awt.event.ActionEvent;
+import java.awt.Toolkit;
+
+public class ExitAction extends AbstractAction {
+    public static final String ACTION_NAME = "exit";
+    private JFrame frame;
+
+    public ExitAction(JFrame frame) {
+        putValue(NAME, "Quit");
+        putValue(SHORT_DESCRIPTION, "Quit");
+        putValue(LONG_DESCRIPTION, "Quit");
+        putValue(MNEMONIC_KEY, KeyEvent.VK_Q);
+        putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_Q,
+                Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+        this.frame = frame;
+    }
+
+    public void actionPerformed(ActionEvent e) {
+        frame.dispose();
+        System.exit(0);
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/action/OpenAction.java b/draw9patch/src/com/android/draw9patch/ui/action/OpenAction.java
new file mode 100644
index 0000000..45ee5be
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/action/OpenAction.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui.action;
+
+import com.android.draw9patch.ui.MainFrame;
+
+import javax.swing.KeyStroke;
+import java.awt.event.KeyEvent;
+import java.awt.event.ActionEvent;
+import java.awt.Toolkit;
+
+public class OpenAction extends BackgroundAction {
+    public static final String ACTION_NAME = "open";
+    private MainFrame frame;
+
+    public OpenAction(MainFrame frame) {
+        this.frame = frame;
+        putValue(NAME, "Open 9-patch...");
+        putValue(SHORT_DESCRIPTION, "Open...");
+        putValue(LONG_DESCRIPTION, "Open 9-patch...");
+        putValue(MNEMONIC_KEY, KeyEvent.VK_O);
+        putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_O,
+                Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+    }
+
+    public void actionPerformed(ActionEvent e) {
+        executeBackgroundTask(frame.open(null));
+    }
+}
diff --git a/draw9patch/src/com/android/draw9patch/ui/action/SaveAction.java b/draw9patch/src/com/android/draw9patch/ui/action/SaveAction.java
new file mode 100644
index 0000000..5c1dc52
--- /dev/null
+++ b/draw9patch/src/com/android/draw9patch/ui/action/SaveAction.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2008 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.draw9patch.ui.action;
+
+import com.android.draw9patch.ui.MainFrame;
+
+import javax.swing.KeyStroke;
+import java.awt.event.KeyEvent;
+import java.awt.event.ActionEvent;
+import java.awt.Toolkit;
+
+public class SaveAction extends BackgroundAction {
+    public static final String ACTION_NAME = "save";
+    private MainFrame frame;
+
+    public SaveAction(MainFrame frame) {
+        this.frame = frame;
+        putValue(NAME, "Save 9-patch...");
+        putValue(SHORT_DESCRIPTION, "Save...");
+        putValue(LONG_DESCRIPTION, "Save 9-patch...");
+        putValue(MNEMONIC_KEY, KeyEvent.VK_S);
+        putValue(ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_S,
+                Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+    }
+
+    public void actionPerformed(ActionEvent e) {
+        executeBackgroundTask(frame.save());
+    }
+}
diff --git a/draw9patch/src/resources/images/checker.png b/draw9patch/src/resources/images/checker.png
new file mode 100644
index 0000000..78908f4
--- /dev/null
+++ b/draw9patch/src/resources/images/checker.png
diff --git a/draw9patch/src/resources/images/drop.png b/draw9patch/src/resources/images/drop.png
new file mode 100644
index 0000000..7a7436a
--- /dev/null
+++ b/draw9patch/src/resources/images/drop.png