mirror of
https://github.com/mozilla/gecko-dev.git
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333 lines
11 KiB
Java
333 lines
11 KiB
Java
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko.gfx;
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import org.mozilla.gecko.FloatUtils;
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import org.mozilla.gecko.GeckoApp;
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import org.mozilla.gecko.GeckoAppShell;
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import org.mozilla.gecko.SurfaceBits;
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import org.json.JSONArray;
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import android.graphics.PixelFormat;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.opengl.GLES20;
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import android.util.Log;
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import android.view.Surface;
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import android.view.SurfaceView;
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import android.view.View;
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import android.widget.AbsoluteLayout;
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import java.nio.FloatBuffer;
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import java.util.Map;
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public class PluginLayer extends TileLayer {
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private static final String LOGTAG = "PluginLayer";
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private static final String PREF_PLUGIN_USE_PLACEHOLDER = "plugins.use_placeholder";
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private static boolean sUsePlaceholder = true;
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private View mView;
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private SurfaceView mSurfaceView;
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private PluginLayoutParams mLayoutParams;
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private AbsoluteLayout mContainer;
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private boolean mViewVisible;
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private boolean mShowPlaceholder;
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private boolean mDestroyed;
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private RectF mLastViewport;
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private float mLastZoomFactor;
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private ShowViewRunnable mShowViewRunnable;
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private static final float TEXTURE_MAP[] = {
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0.0f, 1.0f, // top left
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0.0f, 0.0f, // bottom left
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1.0f, 1.0f, // top right
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1.0f, 0.0f, // bottom right
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};
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public PluginLayer(View view, Rect rect, int maxDimension) {
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super(new BufferedCairoImage(null, 0, 0, 0), TileLayer.PaintMode.NORMAL);
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mView = view;
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mContainer = GeckoApp.mAppContext.getPluginContainer();
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mShowViewRunnable = new ShowViewRunnable(this);
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mView.setWillNotDraw(false);
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if (mView instanceof SurfaceView) {
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mSurfaceView = (SurfaceView)view;
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mSurfaceView.setZOrderOnTop(false);
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mSurfaceView.setZOrderMediaOverlay(true);
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}
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mLayoutParams = new PluginLayoutParams(rect, maxDimension);
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}
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static void addPrefNames(JSONArray prefs) {
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prefs.put(PREF_PLUGIN_USE_PLACEHOLDER);
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}
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static boolean setUsePlaceholder(Map<String, Integer> prefs) {
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Integer usePlaceholder = prefs.get(PREF_PLUGIN_USE_PLACEHOLDER);
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if (usePlaceholder == null) {
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return false;
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}
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sUsePlaceholder = (int)usePlaceholder == 1 ? true : false;
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Log.i(LOGTAG, "Using plugin placeholder: " + sUsePlaceholder);
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return true;
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}
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public void setVisible(boolean newVisible) {
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if (newVisible && !mShowPlaceholder) {
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showView();
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} else {
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hideView();
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}
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}
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private void hideView() {
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if (mViewVisible) {
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GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
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public void run() {
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mView.setVisibility(View.GONE);
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}
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});
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mViewVisible = false;
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}
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}
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private void suspendView() {
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// Right now we can only show a placeholder ("suspend") a
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// SurfaceView plugin (Flash)
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if (mSurfaceView != null) {
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hideView();
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GeckoApp.mAppContext.mMainHandler.removeCallbacks(mShowViewRunnable);
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GeckoApp.mAppContext.mMainHandler.postDelayed(mShowViewRunnable, 250);
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}
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}
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public void updateView() {
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showView(true);
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}
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public void showView() {
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showView(false);
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}
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public void showView(boolean forceUpdate) {
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if (!mViewVisible || forceUpdate) {
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GeckoApp.mAppContext.mMainHandler.post(new Runnable() {
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public void run() {
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if (mContainer.indexOfChild(mView) < 0) {
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mContainer.addView(mView, mLayoutParams);
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} else {
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mContainer.updateViewLayout(mView, mLayoutParams);
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mView.setVisibility(View.VISIBLE);
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}
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}
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});
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mViewVisible = true;
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mShowPlaceholder = false;
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}
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}
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public void destroy() {
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mDestroyed = true;
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mContainer.removeView(mView);
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GeckoApp.mAppContext.mMainHandler.removeCallbacks(mShowViewRunnable);
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}
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public void reset(Rect rect) {
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mLayoutParams.reset(rect);
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}
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@Override
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protected void performUpdates(RenderContext context) {
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if (mDestroyed)
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return;
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if (!RectUtils.fuzzyEquals(context.viewport, mLastViewport) ||
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!FloatUtils.fuzzyEquals(context.zoomFactor, mLastZoomFactor)) {
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// Viewport has changed from the last update
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// Attempt to figure out if this is a full page plugin or near to it. If so, we don't show the placeholder because
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// it just performs badly (flickering).
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boolean fullPagePlugin = (mLayoutParams.width >= (context.viewport.width() * 0.90f) ||
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mLayoutParams.height >= (context.viewport.height() * 0.90f));
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if (!fullPagePlugin && mLastViewport != null && mSurfaceView != null && !mShowPlaceholder && sUsePlaceholder) {
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// We have a SurfaceView that we can snapshot for a placeholder, and we are
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// not currently showing a placeholder.
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Surface surface = mSurfaceView.getHolder().getSurface();
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SurfaceBits bits = GeckoAppShell.getSurfaceBits(surface);
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if (bits != null) {
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int cairoFormat = -1;
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switch (bits.format) {
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case PixelFormat.RGBA_8888:
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cairoFormat = CairoImage.FORMAT_ARGB32;
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break;
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case PixelFormat.RGB_565:
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cairoFormat = CairoImage.FORMAT_RGB16_565;
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break;
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default:
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Log.w(LOGTAG, "Unable to handle format " + bits.format);
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break;
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}
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if (cairoFormat >= 0) {
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BufferedCairoImage image = (BufferedCairoImage)mImage;
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image.setBuffer(bits.buffer, bits.width, bits.height, cairoFormat);
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mPosition = new Rect(mLayoutParams.x, mLayoutParams.y, mLayoutParams.x + bits.width, mLayoutParams.y + bits.height);
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mPosition.offset(Math.round(mLastViewport.left), Math.round(mLastViewport.top));
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mResolution = mLastZoomFactor;
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// We've uploaded the snapshot to the texture now (or will in super.performUpdates)
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// so we can draw the placeholder
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mShowPlaceholder = true;
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super.performUpdates(context);
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}
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}
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}
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mLastZoomFactor = context.zoomFactor;
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mLastViewport = context.viewport;
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mLayoutParams.reposition(context.viewport, context.zoomFactor);
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if (mShowPlaceholder) {
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suspendView();
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} else {
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// We aren't showing the placeholder so we need to update the view position immediately
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updateView();
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}
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}
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}
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@Override
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public void draw(RenderContext context) {
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if (!mShowPlaceholder || mDestroyed || !initialized())
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return;
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RectF bounds;
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Rect position = getPosition();
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RectF viewport = context.viewport;
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bounds = getBounds(context);
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float height = mLayoutParams.height;
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float left = bounds.left - viewport.left;
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float top = viewport.height() - (bounds.top + height - viewport.top);
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float[] coords = {
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//x, y, z, texture_x, texture_y
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left/viewport.width(), top/viewport.height(), 0,
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0.0f, mLayoutParams.height / bounds.height(),
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left/viewport.width(), (top+height)/viewport.height(), 0,
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0.0f, 0.0f,
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(left+mLayoutParams.width)/viewport.width(), top/viewport.height(), 0,
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mLayoutParams.width / bounds.width(), mLayoutParams.height / bounds.height(),
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(left+mLayoutParams.width)/viewport.width(), (top+height)/viewport.height(), 0,
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mLayoutParams.width / bounds.width(), 0.0f
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};
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FloatBuffer coordBuffer = context.coordBuffer;
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int positionHandle = context.positionHandle;
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int textureHandle = context.textureHandle;
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GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
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GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, getTextureID());
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// Make sure we are at position zero in the buffer
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coordBuffer.position(0);
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coordBuffer.put(coords);
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// Unbind any the current array buffer so we can use client side buffers
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GLES20.glBindBuffer(GLES20.GL_ARRAY_BUFFER, 0);
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// Vertex coordinates are x,y,z starting at position 0 into the buffer.
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coordBuffer.position(0);
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GLES20.glVertexAttribPointer(positionHandle, 3, GLES20.GL_FLOAT, false, 20, coordBuffer);
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// Texture coordinates are texture_x, texture_y starting at position 3 into the buffer.
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coordBuffer.position(3);
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GLES20.glVertexAttribPointer(textureHandle, 2, GLES20.GL_FLOAT, false, 20, coordBuffer);
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GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
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}
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class PluginLayoutParams extends AbsoluteLayout.LayoutParams
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{
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private static final String LOGTAG = "GeckoApp.PluginLayoutParams";
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private RectF mRect;
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private int mMaxDimension;
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private float mLastResolution;
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public PluginLayoutParams(Rect rect, int maxDimension) {
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super(0, 0, 0, 0);
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mMaxDimension = maxDimension;
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reset(rect);
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}
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private void clampToMaxSize() {
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if (width > mMaxDimension || height > mMaxDimension) {
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if (width > height) {
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height = Math.round(((float)height/(float)width) * mMaxDimension);
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width = mMaxDimension;
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} else {
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width = Math.round(((float)width/(float)height) * mMaxDimension);
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height = mMaxDimension;
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}
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}
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}
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public void reset(Rect rect) {
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mRect = new RectF(rect);
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}
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public void reposition(RectF viewport, float zoomFactor) {
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RectF scaled = RectUtils.scale(mRect, zoomFactor);
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this.x = Math.round(scaled.left - viewport.left);
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this.y = Math.round(scaled.top - viewport.top);
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if (!FloatUtils.fuzzyEquals(mLastResolution, zoomFactor)) {
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width = Math.round(mRect.width() * zoomFactor);
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height = Math.round(mRect.height() * zoomFactor);
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mLastResolution = zoomFactor;
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clampToMaxSize();
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}
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}
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}
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class ShowViewRunnable implements Runnable {
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private PluginLayer mLayer;
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public ShowViewRunnable(PluginLayer layer) {
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mLayer = layer;
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}
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public void run() {
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mLayer.showView();
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}
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}
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}
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