mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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249 lines
9.0 KiB
Java
249 lines
9.0 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Android code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2009-2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Patrick Walton <pcwalton@mozilla.com>
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* Chris Lord <chrislord.net@gmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.gecko.gfx;
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import org.mozilla.gecko.gfx.CairoImage;
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import org.mozilla.gecko.gfx.IntSize;
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import org.mozilla.gecko.gfx.LayerClient;
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import org.mozilla.gecko.gfx.LayerController;
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import org.mozilla.gecko.gfx.LayerRenderer;
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import org.mozilla.gecko.gfx.PointUtils;
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import org.mozilla.gecko.gfx.SingleTileLayer;
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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.GeckoEvent;
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import android.content.Context;
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import android.graphics.Point;
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import android.graphics.PointF;
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import android.graphics.Rect;
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import android.graphics.RectF;
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import android.util.DisplayMetrics;
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import android.util.Log;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.nio.ByteBuffer;
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/**
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* Transfers a software-rendered Gecko to an ImageLayer so that it can be rendered by our
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* compositor.
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*
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* TODO: Throttle down Gecko's priority when we pan and zoom.
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*/
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public class GeckoSoftwareLayerClient extends LayerClient {
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private static final String LOGTAG = "GeckoSoftwareLayerClient";
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private Context mContext;
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private int mWidth, mHeight, mFormat;
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private IntSize mScreenSize, mViewportSize;
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private ByteBuffer mBuffer;
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private final SingleTileLayer mTileLayer;
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/* The viewport rect that Gecko is currently displaying. */
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private ViewportMetrics mGeckoViewport;
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private CairoImage mCairoImage;
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private static final long MIN_VIEWPORT_CHANGE_DELAY = 350L;
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private long mLastViewportChangeTime;
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private boolean mPendingViewportAdjust;
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public GeckoSoftwareLayerClient(Context context) {
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mContext = context;
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mWidth = LayerController.TILE_WIDTH;
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mHeight = LayerController.TILE_HEIGHT;
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mFormat = CairoImage.FORMAT_RGB16_565;
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mScreenSize = new IntSize(1, 1);
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mBuffer = ByteBuffer.allocateDirect(mWidth * mHeight * 2);
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mCairoImage = new CairoImage() {
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@Override
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public ByteBuffer getBuffer() { return mBuffer; }
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@Override
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public int getWidth() { return mWidth; }
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@Override
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public int getHeight() { return mHeight; }
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@Override
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public int getFormat() { return mFormat; }
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};
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mTileLayer = new SingleTileLayer(mCairoImage);
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}
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/** Attaches the root layer to the layer controller so that Gecko appears. */
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@Override
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public void setLayerController(LayerController layerController) {
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super.setLayerController(layerController);
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layerController.setRoot(mTileLayer);
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if (mGeckoViewport != null)
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layerController.setViewportMetrics(mGeckoViewport);
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geometryChanged();
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}
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public void beginDrawing() {
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mTileLayer.beginTransaction();
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}
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/*
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* TODO: Would be cleaner if this took an android.graphics.Rect instead, but that would require
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* a little more JNI magic.
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*/
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public void endDrawing(int x, int y, int width, int height, String metadata) {
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try {
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try {
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JSONObject metadataObject = new JSONObject(metadata);
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mGeckoViewport = new ViewportMetrics(metadataObject);
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mTileLayer.setOrigin(PointUtils.round(mGeckoViewport.getDisplayportOrigin()));
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mTileLayer.setResolution(mGeckoViewport.getZoomFactor());
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// Make sure LayerController metrics changes only happen in the
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// UI thread.
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final LayerController controller = getLayerController();
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if (controller != null) {
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controller.post(new Runnable() {
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@Override
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public void run() {
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// Don't adjust page size when zooming unless zoom levels are
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// approximately equal.
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if (FloatUtils.fuzzyEquals(controller.getZoomFactor(), mGeckoViewport.getZoomFactor()))
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controller.setPageSize(mGeckoViewport.getPageSize());
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}
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});
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}
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} catch (JSONException e) {
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throw new RuntimeException(e);
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}
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Rect rect = new Rect(x, y, x + width, y + height);
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mTileLayer.invalidate(rect);
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} finally {
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mTileLayer.endTransaction();
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}
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}
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public ViewportMetrics getGeckoViewportMetrics() {
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// Return a copy, as we modify this inside the Gecko thread
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if (mGeckoViewport != null)
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return new ViewportMetrics(mGeckoViewport);
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return null;
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}
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/** Returns the back buffer. This function is for Gecko to use. */
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public ByteBuffer lockBuffer() {
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return mBuffer;
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}
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/**
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* Gecko calls this function to signal that it is done with the back buffer. After this call,
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* it is forbidden for Gecko to touch the buffer.
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*/
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public void unlockBuffer() {
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/* no-op */
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}
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@Override
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public void geometryChanged() {
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/* Let Gecko know if the screensize has changed */
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DisplayMetrics metrics = new DisplayMetrics();
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GeckoApp.mAppContext.getWindowManager().getDefaultDisplay().getMetrics(metrics);
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if (metrics.widthPixels != mScreenSize.width ||
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metrics.heightPixels != mScreenSize.height) {
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mScreenSize = new IntSize(metrics.widthPixels, metrics.heightPixels);
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Log.i(LOGTAG, "Screen-size changed to " + mScreenSize);
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GeckoEvent event = new GeckoEvent(GeckoEvent.SIZE_CHANGED,
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LayerController.TILE_WIDTH, LayerController.TILE_HEIGHT,
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metrics.widthPixels, metrics.heightPixels);
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GeckoAppShell.sendEventToGecko(event);
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}
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render();
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}
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@Override
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public void render() {
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adjustViewportWithThrottling();
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}
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private void adjustViewportWithThrottling() {
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if (!getLayerController().getRedrawHint())
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return;
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if (mPendingViewportAdjust)
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return;
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long timeDelta = System.currentTimeMillis() - mLastViewportChangeTime;
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if (timeDelta < MIN_VIEWPORT_CHANGE_DELAY) {
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getLayerController().getView().postDelayed(
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new Runnable() {
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public void run() {
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mPendingViewportAdjust = false;
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adjustViewport();
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}
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}, MIN_VIEWPORT_CHANGE_DELAY - timeDelta);
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mPendingViewportAdjust = true;
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return;
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}
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adjustViewport();
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}
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private void adjustViewport() {
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Log.i(LOGTAG, "Adjusting viewport");
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ViewportMetrics viewportMetrics =
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new ViewportMetrics(getLayerController().getViewportMetrics());
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PointF viewportOffset = viewportMetrics.getOptimumViewportOffset();
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viewportMetrics.setViewportOffset(viewportOffset);
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viewportMetrics.setViewport(viewportMetrics.getClampedViewport());
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GeckoEvent event = new GeckoEvent("Viewport:Change", viewportMetrics.toJSON());
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GeckoAppShell.sendEventToGecko(event);
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mLastViewportChangeTime = System.currentTimeMillis();
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}
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}
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