michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: package org.mozilla.gecko.gfx;
michael@0: 
michael@0: import org.mozilla.gecko.GeckoAppShell;
michael@0: import org.mozilla.gecko.util.FloatUtils;
michael@0: import org.mozilla.gecko.util.ThreadUtils;
michael@0: 
michael@0: import android.graphics.PointF;
michael@0: import android.graphics.Rect;
michael@0: import android.graphics.RectF;
michael@0: import android.view.SurfaceView;
michael@0: import android.view.View;
michael@0: import android.widget.AbsoluteLayout;
michael@0: 
michael@0: public class PluginLayer extends TileLayer {
michael@0:     private static final String LOGTAG = "PluginLayer";
michael@0: 
michael@0:     private View mView;
michael@0:     private SurfaceView mSurfaceView;
michael@0:     private PluginLayoutParams mLayoutParams;
michael@0:     private AbsoluteLayout mContainer;
michael@0: 
michael@0:     private boolean mDestroyed;
michael@0:     private boolean mViewVisible;
michael@0: 
michael@0:     private RectF mLastViewport;
michael@0:     private float mLastZoomFactor;
michael@0: 
michael@0:     private static final float TEXTURE_MAP[] = {
michael@0:                 0.0f, 1.0f, // top left
michael@0:                 0.0f, 0.0f, // bottom left
michael@0:                 1.0f, 1.0f, // top right
michael@0:                 1.0f, 0.0f, // bottom right
michael@0:     };
michael@0: 
michael@0:     public PluginLayer(View view, RectF rect, int maxDimension) {
michael@0:         super(new BufferedCairoImage(null, 0, 0, 0), TileLayer.PaintMode.NORMAL);
michael@0: 
michael@0:         mView = view;
michael@0:         mContainer = GeckoAppShell.getGeckoInterface().getPluginContainer();
michael@0: 
michael@0:         mView.setWillNotDraw(false);
michael@0:         if (mView instanceof SurfaceView) {
michael@0:             mSurfaceView = (SurfaceView)view;
michael@0:             mSurfaceView.setZOrderOnTop(false);
michael@0:             mSurfaceView.setZOrderMediaOverlay(true);
michael@0:         }
michael@0: 
michael@0:         mLayoutParams = new PluginLayoutParams(rect, maxDimension);
michael@0:     }
michael@0: 
michael@0:     public void setVisible(boolean visible) {
michael@0:         if (visible) {
michael@0:             showView();
michael@0:         } else {
michael@0:             hideView();
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     private void hideView() {
michael@0:         if (mViewVisible) {
michael@0:             ThreadUtils.postToUiThread(new Runnable() {
michael@0:                 @Override
michael@0:                 public void run() {
michael@0:                     mView.setVisibility(View.GONE);
michael@0:                     mViewVisible = false;
michael@0:                 }
michael@0:             });
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public void showView() {
michael@0:         ThreadUtils.postToUiThread(new Runnable() {
michael@0:             @Override
michael@0:             public void run() {
michael@0:                 if (mContainer.indexOfChild(mView) < 0) {
michael@0:                     mContainer.addView(mView, mLayoutParams);
michael@0:                 } else {
michael@0:                     mContainer.updateViewLayout(mView, mLayoutParams);
michael@0:                     mView.setVisibility(View.VISIBLE);
michael@0:                 }
michael@0:                 mViewVisible = true;
michael@0:             }
michael@0:         });
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void destroy() {
michael@0:         mDestroyed = true;
michael@0: 
michael@0:         mContainer.removeView(mView);
michael@0:     }
michael@0: 
michael@0:     public void reset(RectF rect) {
michael@0:         mLayoutParams.reset(rect);
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     protected void performUpdates(RenderContext context) {
michael@0:         if (mDestroyed)
michael@0:             return;
michael@0: 
michael@0:         if (!RectUtils.fuzzyEquals(context.viewport, mLastViewport) ||
michael@0:             !FloatUtils.fuzzyEquals(context.zoomFactor, mLastZoomFactor)) {
michael@0: 
michael@0:             mLastZoomFactor = context.zoomFactor;
michael@0:             mLastViewport = context.viewport;
michael@0:             mLayoutParams.reposition(context.viewport, context.offset, context.zoomFactor);
michael@0: 
michael@0:             showView();
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     @Override
michael@0:     public void draw(RenderContext context) {
michael@0:     }
michael@0: 
michael@0:     class PluginLayoutParams extends AbsoluteLayout.LayoutParams
michael@0:     {
michael@0:         private static final String LOGTAG = "GeckoApp.PluginLayoutParams";
michael@0: 
michael@0:         private RectF mRect;
michael@0:         private int mMaxDimension;
michael@0:         private float mLastResolution;
michael@0: 
michael@0:         public PluginLayoutParams(RectF rect, int maxDimension) {
michael@0:             super(0, 0, 0, 0);
michael@0: 
michael@0:             mMaxDimension = maxDimension;
michael@0:             reset(rect);
michael@0:         }
michael@0: 
michael@0:         private void clampToMaxSize() {
michael@0:             if (width > mMaxDimension || height > mMaxDimension) {
michael@0:                 if (width > height) {
michael@0:                     height = Math.round(((float)height/(float)width) * mMaxDimension);
michael@0:                     width = mMaxDimension;
michael@0:                 } else {
michael@0:                     width = Math.round(((float)width/(float)height) * mMaxDimension);
michael@0:                     height = mMaxDimension;
michael@0:                 }
michael@0:             }
michael@0:         }
michael@0: 
michael@0:         public void reset(RectF rect) {
michael@0:             mRect = rect;
michael@0:         }
michael@0: 
michael@0:         public void reposition(RectF viewport, PointF offset, float zoomFactor) {
michael@0: 
michael@0:             RectF scaled = RectUtils.scale(mRect, zoomFactor);
michael@0:             scaled.offset(offset.x, offset.y);
michael@0: 
michael@0:             this.x = Math.round(scaled.left - viewport.left);
michael@0:             this.y = Math.round(scaled.top - viewport.top);
michael@0: 
michael@0:             if (!FloatUtils.fuzzyEquals(mLastResolution, zoomFactor)) {
michael@0:                 width = Math.round(mRect.width() * zoomFactor);
michael@0:                 height = Math.round(mRect.height() * zoomFactor);
michael@0:                 mLastResolution = zoomFactor;
michael@0: 
michael@0:                 clampToMaxSize();
michael@0:             }
michael@0:         }
michael@0:     }
michael@0: }