Android: add support for Ink annotation creation

14 files changed, 378 insertions, 12 deletions

diff --git a/android/jni/mupdf.c b/android/jni/mupdf.c
index c929e13e..75626133 100644
--- a/android/jni/mupdf.c
+++ b/android/jni/mupdf.c
@@ -35,6 +35,7 @@
 #define STRIKE_HEIGHT (0.375f)
 #define UNDERLINE_HEIGHT (0.075f)
 #define LINE_THICKNESS (0.07f)
+#define INK_THICKNESS (4.0f)
 #define SMALL_FLOAT (0.00001)
 
 enum
@@ -1473,6 +1474,99 @@ JNI_FN(MuPDFCore_addMarkupAnnotationInternal)(JNIEnv * env, jobject thiz, jobjec
 }
 
 JNIEXPORT void JNICALL
+JNI_FN(MuPDFCore_addInkAnnotationInternal)(JNIEnv * env, jobject thiz, jobjectArray arcs)
+{
+	globals *glo = get_globals(env, thiz);
+	fz_context *ctx = glo->ctx;
+	fz_document *doc = glo->doc;
+	fz_interactive *idoc = fz_interact(doc);
+	page_cache *pc = &glo->pages[glo->current];
+	jclass pt_cls;
+	jfieldID x_fid, y_fid;
+	int i, j, k, n;
+	fz_point *pts = NULL;
+	int *counts = NULL;
+	int total = 0;
+	float color[3];
+
+	if (idoc == NULL)
+		return;
+
+	color[0] = 1.0;
+	color[1] = 0.0;
+	color[2] = 0.0;
+
+	fz_var(pts);
+	fz_var(counts);
+	fz_try(ctx)
+	{
+		fz_annot *annot;
+		fz_matrix ctm;
+
+		float zoom = glo->resolution / 72;
+		zoom = 1.0 / zoom;
+		fz_scale(&ctm, zoom, zoom);
+		pt_cls = (*env)->FindClass(env, "android.graphics.PointF");
+		if (pt_cls == NULL) fz_throw(ctx, "FindClass");
+		x_fid = (*env)->GetFieldID(env, pt_cls, "x", "F");
+		if (x_fid == NULL) fz_throw(ctx, "GetFieldID(x)");
+		y_fid = (*env)->GetFieldID(env, pt_cls, "y", "F");
+		if (y_fid == NULL) fz_throw(ctx, "GetFieldID(y)");
+
+		n = (*env)->GetArrayLength(env, arcs);
+
+		counts = fz_malloc_array(ctx, n, sizeof(int));
+
+		for (i = 0; i < n; i++)
+		{
+			jobjectArray arc = (jobjectArray)(*env)->GetObjectArrayElement(env, arcs, i);
+			int count = (*env)->GetArrayLength(env, arc);
+
+			counts[i] = count;
+			total += count;
+		}
+
+		pts = fz_malloc_array(ctx, total, sizeof(fz_point));
+
+		k = 0;
+		for (i = 0; i < n; i++)
+		{
+			jobjectArray arc = (jobjectArray)(*env)->GetObjectArrayElement(env, arcs, i);
+			int count = counts[i];
+
+			for (j = 0; j < count; j++)
+			{
+				jobject pt = (*env)->GetObjectArrayElement(env, arc, j);
+
+				pts[k].x = pt ? (*env)->GetFloatField(env, pt, x_fid) : 0.0f;
+				pts[k].y = pt ? (*env)->GetFloatField(env, pt, y_fid) : 0.0f;
+				fz_transform_point(&pts[k], &ctm);
+				k++;
+			}
+		}
+
+		annot = fz_create_annot(idoc, pc->page, FZ_ANNOT_INK);
+
+		fz_set_ink_annot_list(idoc, annot, pts, counts, n, color, INK_THICKNESS);
+
+		dump_annotation_display_lists(glo);
+	}
+	fz_always(ctx)
+	{
+		fz_free(ctx, pts);
+		fz_free(ctx, counts);
+	}
+	fz_catch(ctx)
+	{
+		LOGE("addInkAnnotation: %s failed", ctx->error->message);
+		jclass cls = (*env)->FindClass(env, "java/lang/OutOfMemoryError");
+		if (cls != NULL)
+			(*env)->ThrowNew(env, cls, "Out of memory in MuPDFCore_searchPage");
+		(*env)->DeleteLocalRef(env, cls);
+	}
+}
+
+JNIEXPORT void JNICALL
 JNI_FN(MuPDFCore_deleteAnnotationInternal)(JNIEnv * env, jobject thiz, int annot_index)
 {
 	globals *glo = get_globals(env, thiz);
diff --git a/android/res/drawable-ldpi/ic_annot.png b/android/res/drawable-ldpi/ic_annot.png
new file mode 100644
index 00000000..c4f1df07
--- /dev/null
+++ b/android/res/drawable-ldpi/ic_annot.png
diff --git a/android/res/drawable-ldpi/ic_pen.png b/android/res/drawable-ldpi/ic_pen.png
new file mode 100644
index 00000000..7b7de296
--- /dev/null
+++ b/android/res/drawable-ldpi/ic_pen.png
diff --git a/android/res/drawable-mdpi/ic_annot.png b/android/res/drawable-mdpi/ic_annot.png
new file mode 100644
index 00000000..0b4bfd92
--- /dev/null
+++ b/android/res/drawable-mdpi/ic_annot.png
diff --git a/android/res/drawable-mdpi/ic_pen.png b/android/res/drawable-mdpi/ic_pen.png
new file mode 100644
index 00000000..db805373
--- /dev/null
+++ b/android/res/drawable-mdpi/ic_pen.png
diff --git a/android/res/layout/buttons.xml b/android/res/layout/buttons.xml
index 879abf46..e714b022 100644
--- a/android/res/layout/buttons.xml
+++ b/android/res/layout/buttons.xml
@@ -35,20 +35,20 @@
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_centerVertical="true"
-                android:layout_toLeftOf="@+id/selectButton"
+                android:layout_toLeftOf="@+id/annotButton"
                 android:contentDescription="@string/link_control"
                 android:background="@drawable/button"
                 android:src="@drawable/ic_link" />
 
             <ImageButton
-                android:id="@+id/selectButton"
+                android:id="@+id/annotButton"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
                 android:layout_centerVertical="true"
                 android:layout_toLeftOf="@+id/outlineButton"
-                android:contentDescription="@string/select"
+                android:contentDescription="@string/edit_annotations"
                 android:background="@drawable/button"
-                android:src="@drawable/ic_select" />
+                android:src="@drawable/ic_annot" />
 
             <ImageButton
                 android:id="@+id/outlineButton"
@@ -197,6 +197,16 @@
             android:background="@color/toolbar" >
 
             <ImageButton
+                android:id="@+id/cancelDeleteButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:layout_alignParentLeft="true"
+                android:contentDescription="@string/cancel"
+                android:background="@drawable/button"
+                android:src="@drawable/ic_cancel" />
+
+            <ImageButton
                 android:id="@+id/deleteButton"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -207,7 +217,69 @@
                 android:src="@drawable/ic_trash" />
 
         </RelativeLayout>
-    </ViewAnimator>
+
+        <RelativeLayout
+            android:id="@+id/topBar5"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@color/toolbar" >
+
+            <ImageButton
+                android:id="@+id/cancelAnnotButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:layout_alignParentLeft="true"
+                android:contentDescription="@string/cancel"
+                android:background="@drawable/button"
+                android:src="@drawable/ic_cancel" />
+
+            <ImageButton
+                android:id="@+id/selectButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:layout_toLeftOf="@+id/inkButton"
+                android:contentDescription="@string/select"
+                android:background="@drawable/button"
+                android:src="@drawable/ic_select" />
+
+            <ImageButton
+                android:id="@+id/inkButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:layout_alignParentRight="true"
+                android:contentDescription="@string/ink"
+                android:background="@drawable/button"
+                android:src="@drawable/ic_pen" />
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:id="@+id/topBar6"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:background="@color/toolbar" >
+
+            <ImageButton
+                android:id="@+id/cancelInkButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:layout_alignParentLeft="true"
+                android:contentDescription="@string/cancel"
+                android:background="@drawable/button"
+                android:src="@drawable/ic_cancel" />
+
+            <Button
+                android:id="@+id/saveInkButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:layout_alignParentRight="true"
+                android:text="@string/save" />
+        </RelativeLayout>
+        </ViewAnimator>
 
     <RelativeLayout
         android:id="@+id/lowerButtons"
diff --git a/android/res/values/strings.xml b/android/res/values/strings.xml
index 9509c9db..c8008591 100644
--- a/android/res/values/strings.xml
+++ b/android/res/values/strings.xml
@@ -24,4 +24,7 @@
     <string name="delete">Delete</string>
     <string name="highlight">Highlight</string>
     <string name="underline">Underline</string>
+    <string name="edit_annotations">Edit annotations</string>
+    <string name="ink">Ink</string>
+    <string name="save">Save</string>
 </resources>
diff --git a/android/src/com/artifex/mupdfdemo/MuPDFActivity.java b/android/src/com/artifex/mupdfdemo/MuPDFActivity.java
index 01783ede..90e55887 100644
--- a/android/src/com/artifex/mupdfdemo/MuPDFActivity.java
+++ b/android/src/com/artifex/mupdfdemo/MuPDFActivity.java
@@ -28,6 +28,7 @@ import android.view.animation.Animation;
 import android.view.animation.TranslateAnimation;
 import android.view.inputmethod.EditorInfo;
 import android.view.inputmethod.InputMethodManager;
+import android.widget.Button;
 import android.widget.EditText;
 import android.widget.ImageButton;
 import android.widget.RelativeLayout;
@@ -44,7 +45,7 @@ class ThreadPerTaskExecutor implements Executor {
 public class MuPDFActivity extends Activity
 {
 	/* The core rendering instance */
-	enum TopBarMode {Main, Search, Text, Annotation};
+	enum TopBarMode {Main, Search, Text, AnnotSelect, AnnotCreate, InkCreate};
 
 	private MuPDFCore    core;
 	private String       mFileName;
@@ -68,6 +69,12 @@ public class MuPDFActivity extends Activity
 	private ImageButton  mCancelButton;
 	private ImageButton  mOutlineButton;
 	private ImageButton  mDeleteButton;
+	private ImageButton mCancelDeleteButton;
+	private ImageButton mAnnotButton;
+	private ImageButton mCancelAnnotButton;
+	private ImageButton mInkButton;
+	private Button mSaveInkButton;
+	private ImageButton mCancelInkButton;
 	private ViewAnimator mTopBarSwitcher;
 	private ImageButton  mLinkButton;
 	private TopBarMode   mTopBarMode;
@@ -402,12 +409,12 @@ public class MuPDFActivity extends Activity
 				switch (item) {
 				case Annotation:
 					showButtons();
-					mTopBarMode = TopBarMode.Annotation;
+					mTopBarMode = TopBarMode.AnnotSelect;
 					mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
 					break;
 				case Widget:
 				case Nothing:
-					if (mTopBarMode == TopBarMode.Annotation) {
+					if (mTopBarMode == TopBarMode.AnnotSelect) {
 						mTopBarMode = TopBarMode.Main;
 						mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
 					}
@@ -468,6 +475,13 @@ public class MuPDFActivity extends Activity
 			}
 		});
 
+		mAnnotButton.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				mTopBarMode = TopBarMode.AnnotCreate;
+				mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
+			}
+		});
+
 		// Activate the select button
 		mSelectButton.setOnClickListener(new View.OnClickListener() {
 			public void onClick(View v) {
@@ -483,6 +497,58 @@ public class MuPDFActivity extends Activity
 				if (pageView != null)
 					pageView.deselectText();
 				mDocView.setMode(MuPDFReaderView.Mode.Viewing);
+				mTopBarMode = TopBarMode.AnnotCreate;
+				mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
+			}
+		});
+
+		mInkButton.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				mDocView.setMode(MuPDFReaderView.Mode.Drawing);
+				mTopBarMode = TopBarMode.InkCreate;
+				mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
+			}
+		});
+
+		mCancelInkButton.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				MuPDFView pageView = (MuPDFView) mDocView.getDisplayedView();
+				if (pageView != null)
+					pageView.cancelDraw();
+				mDocView.setMode(MuPDFReaderView.Mode.Viewing);
+				mTopBarMode = TopBarMode.AnnotCreate;
+				mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
+			}
+		});
+
+		mSaveInkButton.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				MuPDFView pageView = (MuPDFView) mDocView.getDisplayedView();
+				if (pageView != null)
+					pageView.saveDraw();
+				mDocView.setMode(MuPDFReaderView.Mode.Viewing);
+				mTopBarMode = TopBarMode.Main;
+				mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
+			}
+		});
+
+		mCancelDeleteButton.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				MuPDFView pageView = (MuPDFView) mDocView.getDisplayedView();
+				if (pageView != null)
+					pageView.deselectAnnotation();
+				mDocView.setMode(MuPDFReaderView.Mode.Viewing);
+				mTopBarMode = TopBarMode.Main;
+				mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
+			}
+		});
+
+		mCancelAnnotButton.setOnClickListener(new View.OnClickListener() {
+			public void onClick(View v) {
+				MuPDFView pageView = (MuPDFView) mDocView.getDisplayedView();
+				if (pageView != null)
+					pageView.deselectText();
+				mDocView.setMode(MuPDFReaderView.Mode.Viewing);
 				mTopBarMode = TopBarMode.Main;
 				mTopBarSwitcher.setDisplayedChild(mTopBarMode.ordinal());
 			}
@@ -897,6 +963,12 @@ public class MuPDFActivity extends Activity
 		mCancelButton = (ImageButton)mButtonsView.findViewById(R.id.cancel);
 		mOutlineButton = (ImageButton)mButtonsView.findViewById(R.id.outlineButton);
 		mDeleteButton = (ImageButton)mButtonsView.findViewById(R.id.deleteButton);
+		mCancelDeleteButton = (ImageButton)mButtonsView.findViewById(R.id.cancelDeleteButton);
+		mAnnotButton = (ImageButton)mButtonsView.findViewById(R.id.annotButton);
+		mCancelAnnotButton = (ImageButton)mButtonsView.findViewById(R.id.cancelAnnotButton);
+		mInkButton = (ImageButton)mButtonsView.findViewById(R.id.inkButton);
+		mSaveInkButton = (Button)mButtonsView.findViewById(R.id.saveInkButton);
+		mCancelInkButton = (ImageButton)mButtonsView.findViewById(R.id.cancelInkButton);
 		mTopBarSwitcher = (ViewAnimator)mButtonsView.findViewById(R.id.switcher);
 		mSearchBack = (ImageButton)mButtonsView.findViewById(R.id.searchBack);
 		mSearchFwd = (ImageButton)mButtonsView.findViewById(R.id.searchForward);
diff --git a/android/src/com/artifex/mupdfdemo/MuPDFCore.java b/android/src/com/artifex/mupdfdemo/MuPDFCore.java
index 424e3536..2443784a 100644
--- a/android/src/com/artifex/mupdfdemo/MuPDFCore.java
+++ b/android/src/com/artifex/mupdfdemo/MuPDFCore.java
@@ -40,6 +40,7 @@ public class MuPDFCore
 	private native TextChar[][][][] text();
 	private native byte[] textAsHtml();
 	private native void addMarkupAnnotationInternal(PointF[] quadPoints, int type);
+	private native void addInkAnnotationInternal(PointF[][] arcs);
 	private native void deleteAnnotationInternal(int annot_index);
 	private native int passClickEventInternal(int page, float x, float y);
 	private native void setFocusedWidgetChoiceSelectedInternal(String [] selected);
@@ -253,6 +254,11 @@ public class MuPDFCore
 		addMarkupAnnotationInternal(quadPoints, type.ordinal());
 	}
 
+	public synchronized void addInkAnnotation(int page, PointF[][] arcs) {
+		gotoPage(page);
+		addInkAnnotationInternal(arcs);
+	}
+
 	public synchronized void deleteAnnotation(int page, int annot_index) {
 		gotoPage(page);
 		deleteAnnotationInternal(annot_index);
diff --git a/android/src/com/artifex/mupdfdemo/MuPDFPageView.java b/android/src/com/artifex/mupdfdemo/MuPDFPageView.java
index 06c3827a..69f038bb 100644
--- a/android/src/com/artifex/mupdfdemo/MuPDFPageView.java
+++ b/android/src/com/artifex/mupdfdemo/MuPDFPageView.java
@@ -59,8 +59,6 @@ class PassClickResultChoice extends PassClickResult {
 }
 
 public class MuPDFPageView extends PageView implements MuPDFView {
-	private static final float LINE_THICKNESS = 0.07f;
-	private static final float STRIKE_HEIGHT = 0.375f;
 	private final MuPDFCore mCore;
 	private AsyncTask<Void,Void,PassClickResult> mPassClick;
 	private RectF mWidgetAreas[];
@@ -75,6 +73,7 @@ public class MuPDFPageView extends PageView implements MuPDFView {
 	private AsyncTask<String,Void,Boolean> mSetWidgetText;
 	private AsyncTask<String,Void,Void> mSetWidgetChoice;
 	private AsyncTask<PointF[],Void,Void> mAddStrikeOut;
+	private AsyncTask<PointF[][],Void,Void> mAddInk;
 	private AsyncTask<Integer,Void,Void> mDeleteAnnotation;
 	private Runnable changeReporter;
 
@@ -185,6 +184,7 @@ public class MuPDFPageView extends PageView implements MuPDFView {
 				case UNDERLINE:
 				case SQUIGGLY:
 				case STRIKEOUT:
+				case INK:
 					mSelectedAnnotationIndex = i;
 					setItemSelectBox(mAnnotations[i]);
 					return Hit.Annotation;
@@ -357,6 +357,34 @@ public class MuPDFPageView extends PageView implements MuPDFView {
 		setItemSelectBox(null);
 	}
 
+	public void saveDraw() {
+		PointF[][] path = getDraw();
+
+		if (path != null) {
+			if (mAddInk != null) {
+				mAddInk.cancel(true);
+				mAddInk = null;
+			}
+			mAddInk = new AsyncTask<PointF[][],Void,Void>() {
+				@Override
+				protected Void doInBackground(PointF[][]... params) {
+					mCore.addInkAnnotation(mPageNumber, params[0]);
+					return null;
+				}
+
+				@Override
+				protected void onPostExecute(Void result) {
+					loadAnnotations();
+					update();
+				}
+
+			};
+
+			mAddInk.execute(getDraw());
+			cancelDraw();
+		}
+	}
+
 	@Override
 	protected Bitmap drawPage(int sizeX, int sizeY,
 			int patchX, int patchY, int patchWidth, int patchHeight) {
diff --git a/android/src/com/artifex/mupdfdemo/MuPDFReaderView.java b/android/src/com/artifex/mupdfdemo/MuPDFReaderView.java
index 6ddb69da..0aa1909b 100644
--- a/android/src/com/artifex/mupdfdemo/MuPDFReaderView.java
+++ b/android/src/com/artifex/mupdfdemo/MuPDFReaderView.java
@@ -95,15 +95,20 @@ public class MuPDFReaderView extends ReaderView {
 	}
 
 	@Override
-	public void onShowPress(MotionEvent e) {
+	public boolean onDown(MotionEvent e) {
 		switch (mMode) {
 		case Drawing:
+			MuPDFView pageView = (MuPDFView)getDisplayedView();
+			if (pageView != null)
+				pageView.startDraw(e.getX(), e.getY());
 			break;
 		}
+		return super.onDown(e);
 	}
 
 	public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
 			float distanceY) {
+		MuPDFView pageView = (MuPDFView)getDisplayedView();
 		switch (mMode) {
 		case Viewing:
 			if (!tapDisabled)
@@ -111,11 +116,12 @@ public class MuPDFReaderView extends ReaderView {
 
 			return super.onScroll(e1, e2, distanceX, distanceY);
 		case Selecting:
-			MuPDFView pageView = (MuPDFView)getDisplayedView();
 			if (pageView != null)
 				pageView.selectText(e1.getX(), e1.getY(), e2.getX(), e2.getY());
 			return true;
 		case Drawing:
+			if (pageView != null)
+				pageView.continueDraw(e2.getX(), e2.getY());
 			return true;
 		default:
 			return true;
diff --git a/android/src/com/artifex/mupdfdemo/MuPDFReflowView.java b/android/src/com/artifex/mupdfdemo/MuPDFReflowView.java
index 1a2f1d91..9200982a 100644
--- a/android/src/com/artifex/mupdfdemo/MuPDFReflowView.java
+++ b/android/src/com/artifex/mupdfdemo/MuPDFReflowView.java
@@ -103,6 +103,18 @@ public class MuPDFReflowView extends WebView implements MuPDFView {
 		return false;
 	}
 
+	public void startDraw(float x, float y) {
+	}
+
+	public void continueDraw(float x, float y) {
+	}
+
+	public void cancelDraw() {
+	}
+
+	public void saveDraw() {
+	}
+
 	public void setSearchBoxes(RectF[] searchBoxes) {
 	}
 
diff --git a/android/src/com/artifex/mupdfdemo/MuPDFView.java b/android/src/com/artifex/mupdfdemo/MuPDFView.java
index 5f7f19e0..5731945d 100644
--- a/android/src/com/artifex/mupdfdemo/MuPDFView.java
+++ b/android/src/com/artifex/mupdfdemo/MuPDFView.java
@@ -20,6 +20,10 @@ public interface MuPDFView {
 	public void setSearchBoxes(RectF searchBoxes[]);
 	public void setLinkHighlighting(boolean f);
 	public void deselectAnnotation();
+	public void startDraw(float x, float y);
+	public void continueDraw(float x, float y);
+	public void cancelDraw();
+	public void saveDraw();
 	public void setChangeReporter(Runnable reporter);
 	public void update();
 	public void addHq(boolean update);
diff --git a/android/src/com/artifex/mupdfdemo/PageView.java b/android/src/com/artifex/mupdfdemo/PageView.java
index 3eb1e5a3..756ee2f5 100644
--- a/android/src/com/artifex/mupdfdemo/PageView.java
+++ b/android/src/com/artifex/mupdfdemo/PageView.java
@@ -7,6 +7,7 @@ import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Paint;
+import android.graphics.Path;
 import android.graphics.Point;
 import android.graphics.PointF;
 import android.graphics.Rect;
@@ -102,6 +103,8 @@ public abstract class PageView extends ViewGroup {
 	private static final int HIGHLIGHT_COLOR = 0x802572AC;
 	private static final int LINK_COLOR = 0x80AC7225;
 	private static final int BOX_COLOR = 0xFF4444FF;
+	private static final int INK_COLOR = 0xFFFF0000;
+	private static final float INK_THICKNESS = 10.0f;
 	private static final int BACKGROUND_COLOR = 0xFFFFFFFF;
 	private static final int PROGRESS_DIALOG_DELAY = 200;
 	protected final Context   mContext;
@@ -126,6 +129,7 @@ public abstract class PageView extends ViewGroup {
 	private       RectF     mSelectBox;
 	private       TextWord  mText[][];
 	private       RectF     mItemSelectBox;
+	protected     ArrayList<ArrayList<PointF>> mDrawing;
 	private       View      mSearchView;
 	private       boolean   mIsBlank;
 	private       boolean   mHighlightLinks;
@@ -346,6 +350,28 @@ public abstract class PageView extends ViewGroup {
 						paint.setColor(BOX_COLOR);
 						canvas.drawRect(mItemSelectBox.left*scale, mItemSelectBox.top*scale, mItemSelectBox.right*scale, mItemSelectBox.bottom*scale, paint);
 					}
+
+					if (mDrawing != null) {
+						Path path = new Path();
+						PointF p;
+						Iterator<ArrayList<PointF>> it = mDrawing.iterator();
+						while (it.hasNext()) {
+							ArrayList<PointF> arc = it.next();
+							if (arc.size() >= 2) {
+								Iterator<PointF> iit = arc.iterator();
+								p = iit.next();
+								path.moveTo(p.x*scale, p.y*scale);
+								while (iit.hasNext()) {
+									p = iit.next();
+									path.lineTo(p.x*scale, p.y*scale);
+								}
+							}
+						}
+						paint.setStyle(Paint.Style.STROKE);
+						paint.setStrokeWidth(INK_THICKNESS*scale);
+						paint.setColor(INK_COLOR);
+						canvas.drawPath(path, paint);
+					}
 				}
 			};
 
@@ -402,6 +428,49 @@ public abstract class PageView extends ViewGroup {
 		}
 	}
 
+	public void startDraw(float x, float y) {
+		float scale = mSourceScale*(float)getWidth()/(float)mSize.x;
+		float docRelX = (x - getLeft())/scale;
+		float docRelY = (y - getTop())/scale;
+		if (mDrawing == null)
+			mDrawing = new ArrayList<ArrayList<PointF>>();
+
+		ArrayList<PointF> arc = new ArrayList<PointF>();
+		arc.add(new PointF(docRelX, docRelY));
+		mDrawing.add(arc);
+	}
+
+	public void continueDraw(float x, float y) {
+		float scale = mSourceScale*(float)getWidth()/(float)mSize.x;
+		float docRelX = (x - getLeft())/scale;
+		float docRelY = (y - getTop())/scale;
+
+		if (mDrawing != null && mDrawing.size() > 0) {
+			ArrayList<PointF> arc = mDrawing.get(mDrawing.size() - 1);
+			arc.add(new PointF(docRelX, docRelY));
+			mSearchView.invalidate();
+		}
+	}
+
+	public void cancelDraw() {
+		mDrawing = null;
+		mSearchView.invalidate();
+	}
+
+	protected PointF[][] getDraw() {
+		if (mDrawing == null)
+			return null;
+
+		PointF[][] path = new PointF[mDrawing.size()][];
+
+		for (int i = 0; i < mDrawing.size(); i++) {
+			ArrayList<PointF> arc = mDrawing.get(i);
+			path[i] = arc.toArray(new PointF[arc.size()]);
+		}
+
+		return path;
+	}
+
 	protected void processSelectedText(TextProcessor tp) {
 		(new TextSelector(mText, mSelectBox)).select(tp);
 	}