Restructuring the sample plugin and adding more tests.
diff --git a/samples/BrowserPlugin/jni/animation/AnimationPlugin.cpp b/samples/BrowserPlugin/jni/animation/AnimationPlugin.cpp
new file mode 100644
index 0000000..7f15d0d
--- /dev/null
+++ b/samples/BrowserPlugin/jni/animation/AnimationPlugin.cpp
@@ -0,0 +1,214 @@
+/*
+ * Copyright 2008, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "AnimationPlugin.h"
+
+#include <stdio.h>
+#include <sys/time.h>
+#include <time.h>
+#include <math.h>
+#include <string.h>
+
+extern NPNetscapeFuncs*        browser;
+extern ANPLogInterfaceV0       gLogI;
+extern ANPCanvasInterfaceV0    gCanvasI;
+extern ANPPaintInterfaceV0     gPaintI;
+extern ANPPathInterfaceV0      gPathI;
+extern ANPTypefaceInterfaceV0  gTypefaceI;
+
+static void inval(NPP instance) {
+    browser->invalidaterect(instance, NULL);
+}
+
+static uint16 rnd16(float x, int inset) {
+    int ix = (int)roundf(x) + inset;
+    if (ix < 0) {
+        ix = 0;
+    }
+    return static_cast<uint16>(ix);
+}
+
+static void inval(NPP instance, const ANPRectF& r, bool doAA) {
+    const int inset = doAA ? -1 : 0;
+
+    PluginObject *obj = reinterpret_cast<PluginObject*>(instance->pdata);
+    NPRect inval;
+    inval.left = rnd16(r.left, inset);
+    inval.top = rnd16(r.top, inset);
+    inval.right = rnd16(r.right, -inset);
+    inval.bottom = rnd16(r.bottom, -inset);
+    browser->invalidaterect(instance, &inval);
+}
+
+static void drawPlugin(SubPlugin* plugin, const ANPBitmap& bitmap, const ANPRectI& clip) {
+    ANPCanvas* canvas = gCanvasI.newCanvas(&bitmap);
+
+    ANPRectF clipR;
+    clipR.left = clip.left;
+    clipR.top = clip.top;
+    clipR.right = clip.right;
+    clipR.bottom = clip.bottom;
+    gCanvasI.clipRect(canvas, &clipR);
+
+    plugin->draw(canvas);
+    gCanvasI.deleteCanvas(canvas);
+}
+
+uint32_t getMSecs() {
+    struct timeval tv;
+    gettimeofday(&tv, NULL);
+    return (uint32_t) (tv.tv_sec * 1000 + tv.tv_usec / 1000 ); // microseconds to milliseconds
+}
+
+///////////////////////////////////////////////////////////////////////////////
+
+BallAnimation::BallAnimation(NPP inst) : SubPlugin(inst) {
+    m_x = m_y = 0;
+    m_dx = 7 * SCALE;
+    m_dy = 5 * SCALE;
+
+    memset(&m_oval, 0, sizeof(m_oval));
+
+    m_paint = gPaintI.newPaint();
+    gPaintI.setFlags(m_paint, gPaintI.getFlags(m_paint) | kAntiAlias_ANPPaintFlag);
+    gPaintI.setColor(m_paint, 0xFFFF0000);
+    gPaintI.setTextSize(m_paint, 24);
+
+    ANPTypeface* tf = gTypefaceI.createFromName("serif", kItalic_ANPTypefaceStyle);
+    gPaintI.setTypeface(m_paint, tf);
+    gTypefaceI.unref(tf);
+
+    //register for key and touch events
+    ANPEventFlags flags = kKey_ANPEventFlag | kTouch_ANPEventFlag;
+    NPError err = browser->setvalue(inst, kAcceptEvents_ANPSetValue, &flags);
+    if (err != NPERR_NO_ERROR) {
+        gLogI.log(inst, kError_ANPLogType, "Error selecting input events.");
+    }
+}
+
+BallAnimation::~BallAnimation() {
+    gPaintI.deletePaint(m_paint);
+}
+
+static void bounce(float* x, float* dx, const float max) {
+    *x += *dx;
+    if (*x < 0) {
+        *x = 0;
+        if (*dx < 0) {
+            *dx = -*dx;
+        }
+    } else if (*x > max) {
+        *x = max;
+        if (*dx > 0) {
+            *dx = -*dx;
+        }
+    }
+}
+
+void BallAnimation::draw(ANPCanvas* canvas) {
+    NPP instance = this->inst();
+    PluginObject *obj = (PluginObject*) instance->pdata;
+    const float OW = 20;
+    const float OH = 20;
+    const int W = obj->window->width;
+    const int H = obj->window->height;
+
+    inval(instance, m_oval, true);  // inval the old
+    m_oval.left = m_x;
+    m_oval.top = m_y;
+    m_oval.right = m_x + OW;
+    m_oval.bottom = m_y + OH;
+    inval(instance, m_oval, true);  // inval the new
+
+    gCanvasI.drawColor(canvas, 0xFFFFFFFF);
+
+    // test out the Path API
+    {
+        ANPPath* path = gPathI.newPath();
+
+        float cx = W * 0.5f;
+        float cy = H * 0.5f;
+        gPathI.moveTo(path, 0, 0);
+        gPathI.quadTo(path, cx, cy, W, 0);
+        gPathI.quadTo(path, cx, cy, W, H);
+        gPathI.quadTo(path, cx, cy, 0, H);
+        gPathI.quadTo(path, cx, cy, 0, 0);
+
+        gPaintI.setColor(m_paint, 0xFF0000FF);
+        gCanvasI.drawPath(canvas, path, m_paint);
+
+        ANPRectF bounds;
+        memset(&bounds, 0, sizeof(bounds));
+        gPathI.getBounds(path, &bounds);
+#if 0
+        gLogI.log(instance, kDebug_ANPLogType, "drawpath: center %g %g bounds [%g %g %g %g]\n",
+                  cx, cy,
+                  bounds.left, bounds.top, bounds.right, bounds.bottom);
+#endif
+        gPathI.deletePath(path);
+    }
+
+    gPaintI.setColor(m_paint, 0xFFFF0000);
+    gCanvasI.drawOval(canvas, &m_oval, m_paint);
+
+    bounce(&m_x, &m_dx, obj->window->width - OW);
+    bounce(&m_y, &m_dy, obj->window->height - OH);
+
+    if (mUnichar) {
+        ANPFontMetrics fm;
+        gPaintI.getFontMetrics(m_paint, &fm);
+
+        gPaintI.setColor(m_paint, 0xFF0000FF);
+        char c = static_cast<char>(mUnichar);
+        gCanvasI.drawText(canvas, &c, 1, 10, -fm.fTop, m_paint);
+    }
+}
+
+int16 BallAnimation::handleEvent(const ANPEvent* evt) {
+    NPP instance = this->inst();
+
+    switch (evt->eventType) {
+        case kDraw_ANPEventType:
+            switch (evt->data.draw.model) {
+                case kBitmap_ANPDrawingModel:
+                    drawPlugin(this, evt->data.draw.data.bitmap, evt->data.draw.clip);
+                    return 1;
+                default:
+                    break;   // unknown drawing model
+            }
+
+        case kKey_ANPEventType:
+            if (evt->data.key.action == kDown_ANPKeyAction) {
+                mUnichar = evt->data.key.unichar;
+                gLogI.log(instance, kDebug_ANPLogType, "ball downkey event");
+                browser->invalidaterect(instance, NULL);
+            }
+            return 1;
+
+        default:
+            break;
+    }
+    return 0;   // unknown or unhandled event
+}
diff --git a/samples/BrowserPlugin/jni/animation/AnimationPlugin.h b/samples/BrowserPlugin/jni/animation/AnimationPlugin.h
new file mode 100644
index 0000000..1771d79
--- /dev/null
+++ b/samples/BrowserPlugin/jni/animation/AnimationPlugin.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2008, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "PluginObject.h"
+#include "android_npapi.h"
+
+#ifndef pluginGraphics__DEFINED
+#define pluginGraphics__DEFINED
+
+class BallAnimation : public SubPlugin {
+public:
+    BallAnimation(NPP inst);
+    virtual ~BallAnimation();
+    virtual void draw(ANPCanvas*);
+    virtual int16 handleEvent(const ANPEvent* evt);
+private:
+    float m_x;
+    float m_y;
+    float m_dx;
+    float m_dy;
+
+    int32_t mUnichar;
+
+    ANPRectF    m_oval;
+    ANPPaint*   m_paint;
+
+    static const float SCALE = 0.1;
+};
+
+uint32_t getMSecs();
+
+#endif // pluginGraphics__DEFINED