pjs/embedding/android/GeckoSurfaceView.java

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Java

/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Android code.
*
* The Initial Developer of the Original Code is Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.gecko;
import java.io.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.concurrent.locks.*;
import java.util.concurrent.atomic.*;
import java.util.zip.*;
import java.nio.*;
import android.os.*;
import android.app.*;
import android.text.*;
import android.text.method.*;
import android.view.*;
import android.view.inputmethod.*;
import android.content.*;
import android.graphics.*;
import android.widget.*;
import android.hardware.*;
import android.location.*;
import android.graphics.drawable.*;
import android.content.res.*;
import android.util.*;
/*
* GeckoSurfaceView implements a GL surface view,
* similar to GLSurfaceView. However, since we
* already have a thread for Gecko, we don't really want
* a separate renderer thread that GLSurfaceView provides.
*/
class GeckoSurfaceView
extends SurfaceView
implements SurfaceHolder.Callback, SensorEventListener, LocationListener
{
public GeckoSurfaceView(Context context) {
super(context);
getHolder().addCallback(this);
inputConnection = new GeckoInputConnection(this);
setFocusable(true);
setFocusableInTouchMode(true);
DisplayMetrics metrics = new DisplayMetrics();
GeckoApp.mAppContext.getWindowManager().
getDefaultDisplay().getMetrics(metrics);
mWidth = metrics.widthPixels;
mHeight = metrics.heightPixels;
mBufferWidth = 0;
mBufferHeight = 0;
mSurfaceLock = new ReentrantLock();
mEditableFactory = Editable.Factory.getInstance();
initEditable("");
mIMEState = IME_STATE_DISABLED;
mIMETypeHint = "";
mIMEActionHint = "";
}
protected void finalize() throws Throwable {
super.finalize();
}
void drawSplashScreen() {
this.drawSplashScreen(getHolder(), mWidth, mHeight);
}
void drawSplashScreen(SurfaceHolder holder, int width, int height) {
Canvas c = holder.lockCanvas();
if (c == null) {
Log.i("GeckoSurfaceView", "canvas is null");
return;
}
Resources res = getResources();
c.drawColor(res.getColor(R.color.splash_background));
Drawable drawable = res.getDrawable(R.drawable.splash);
int w = drawable.getIntrinsicWidth();
int h = drawable.getIntrinsicHeight();
int x = (width - w)/2;
int y = (height - h)/2 - 16;
drawable.setBounds(x, y, x + w, y + h);
drawable.draw(c);
Paint p = new Paint();
p.setTextAlign(Paint.Align.CENTER);
p.setTextSize(32f);
p.setAntiAlias(true);
p.setColor(res.getColor(R.color.splash_font));
c.drawText(GeckoSurfaceView.mSplashStatusMsg, width/2, y + h + 16, p);
holder.unlockCanvasAndPost(c);
}
/*
* Called on main thread
*/
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (mShowingSplashScreen)
drawSplashScreen(holder, width, height);
mSurfaceLock.lock();
try {
if (mInDrawing) {
Log.w("GeckoAppJava", "surfaceChanged while mInDrawing is true!");
}
if (width == 0 || height == 0)
mSoftwareBuffer = null;
else if (mSoftwareBuffer == null ||
mSoftwareBuffer.capacity() < (width * height * 2) ||
mWidth != width || mHeight != height)
mSoftwareBuffer = ByteBuffer.allocateDirect(width * height * 2);
boolean doSyncDraw = mDrawMode == DRAW_2D &&
mSoftwareBuffer != null &&
GeckoApp.checkLaunchState(GeckoApp.LaunchState.GeckoRunning);
mSyncDraw = doSyncDraw;
mFormat = format;
mWidth = width;
mHeight = height;
mSurfaceValid = true;
Log.i("GeckoAppJava", "surfaceChanged: fmt: " + format + " dim: " + width + " " + height);
DisplayMetrics metrics = new DisplayMetrics();
GeckoApp.mAppContext.getWindowManager().getDefaultDisplay().getMetrics(metrics);
GeckoEvent e = new GeckoEvent(GeckoEvent.SIZE_CHANGED, width, height,
metrics.widthPixels, metrics.heightPixels);
GeckoAppShell.sendEventToGecko(e);
if (mSoftwareBuffer != null)
GeckoAppShell.scheduleRedraw();
if (!doSyncDraw) {
if (mDrawMode == DRAW_GLES_2 || mShowingSplashScreen)
return;
Canvas c = holder.lockCanvas();
c.drawARGB(255, 255, 255, 255);
holder.unlockCanvasAndPost(c);
return;
}
} finally {
mSurfaceLock.unlock();
}
ByteBuffer bb = null;
try {
bb = mSyncBuf.take();
} catch (InterruptedException ie) {
Log.e("GeckoAppJava", "Threw exception while getting sync buf: ", ie);
}
if (bb != null && bb.capacity() == (width * height * 2)) {
mSoftwareBitmap = Bitmap.createBitmap(mWidth, mHeight, Bitmap.Config.RGB_565);
mSoftwareBitmap.copyPixelsFromBuffer(bb);
Canvas c = holder.lockCanvas();
c.drawBitmap(mSoftwareBitmap, 0, 0, null);
holder.unlockCanvasAndPost(c);
}
}
public void surfaceCreated(SurfaceHolder holder) {
Log.i("GeckoAppJava", "surface created");
GeckoEvent e = new GeckoEvent(GeckoEvent.SURFACE_CREATED);
GeckoAppShell.sendEventToGecko(e);
if (mShowingSplashScreen)
drawSplashScreen();
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.i("GeckoAppJava", "surface destroyed");
mSurfaceValid = false;
mSoftwareBuffer = null;
GeckoEvent e = new GeckoEvent(GeckoEvent.SURFACE_DESTROYED);
GeckoAppShell.sendEventToGecko(e);
}
public ByteBuffer getSoftwareDrawBuffer() {
mDrawMode = DRAW_2D;
return mSoftwareBuffer;
}
/*
* Called on Gecko thread
*/
public static final int DRAW_ERROR = 0;
public static final int DRAW_GLES_2 = 1;
public static final int DRAW_2D = 2;
public int beginDrawing() {
if (mInDrawing) {
Log.e("GeckoAppJava", "Recursive beginDrawing call!");
return DRAW_ERROR;
}
/* Grab the lock, which we'll hold while we're drawing.
* It gets released in endDrawing(), and is also used in surfaceChanged
* to make sure that we don't change our surface details while
* we're in the middle of drawing (and especially in the middle of
* executing beginDrawing/endDrawing).
*
* We might not need to hold this lock in between
* beginDrawing/endDrawing, and might just be able to make
* surfaceChanged, beginDrawing, and endDrawing synchronized,
* but this way is safer for now.
*/
mSurfaceLock.lock();
if (!mSurfaceValid) {
Log.e("GeckoAppJava", "Surface not valid");
mSurfaceLock.unlock();
return DRAW_ERROR;
}
mInDrawing = true;
mDrawMode = DRAW_GLES_2;
return DRAW_GLES_2;
}
public void endDrawing() {
if (!mInDrawing) {
Log.e("GeckoAppJava", "endDrawing without beginDrawing!");
return;
}
try {
if (!mSurfaceValid) {
Log.e("GeckoAppJava", "endDrawing with false mSurfaceValid");
return;
}
} finally {
mInDrawing = false;
if (!mSurfaceLock.isHeldByCurrentThread())
Log.e("GeckoAppJava", "endDrawing while mSurfaceLock not held by current thread!");
mSurfaceLock.unlock();
}
}
/* How this works:
* Whenever we want to draw, we want to be sure that we do not lock
* the canvas unless we're sure we can draw. Locking the canvas clears
* the canvas to black in most cases, causing a black flash.
* At the same time, the surface can resize/disappear at any moment
* unless the canvas is locked.
* Draws originate from a different thread so the surface could change
* at any moment while we try to draw until we lock the canvas.
*
* Also, never try to lock the canvas while holding the surface lock
* unless you're in SurfaceChanged, in which case the canvas was already
* locked. Surface lock -> Canvas lock will lead to AB-BA deadlocks.
*/
public void draw2D(ByteBuffer buffer, int stride) {
// mSurfaceLock ensures that we get mSyncDraw/mSoftwareBuffer/etc.
// set correctly before determining whether we should do a sync draw
mSurfaceLock.lock();
try {
if (mSyncDraw) {
if (buffer != mSoftwareBuffer || stride != (mWidth * 2))
return;
mSyncDraw = false;
try {
mSyncBuf.put(buffer);
} catch (InterruptedException ie) {
Log.e("GeckoAppJava", "Threw exception while getting sync buf: ", ie);
}
return;
}
} finally {
mSurfaceLock.unlock();
}
if (buffer != mSoftwareBuffer || stride != (mWidth * 2))
return;
Canvas c = getHolder().lockCanvas();
if (c == null)
return;
if (buffer != mSoftwareBuffer || stride != (mWidth * 2)) {
/* We're screwed. Fill it with white and hope it isn't too noticable
* This could potentially happen if this function is called
* right before mSurfaceLock is locked in SurfaceChanged.
* However, I've never actually seen this code get hit.
*/
c.drawARGB(255, 255, 255, 255);
getHolder().unlockCanvasAndPost(c);
return;
}
if (mSoftwareBitmap == null ||
mSoftwareBitmap.getHeight() != mHeight ||
mSoftwareBitmap.getWidth() != mWidth) {
mSoftwareBitmap = Bitmap.createBitmap(mWidth, mHeight, Bitmap.Config.RGB_565);
}
mSoftwareBitmap.copyPixelsFromBuffer(mSoftwareBuffer);
c.drawBitmap(mSoftwareBitmap, 0, 0, null);
getHolder().unlockCanvasAndPost(c);
}
@Override
public boolean onCheckIsTextEditor () {
return false;
}
@Override
public InputConnection onCreateInputConnection(EditorInfo outAttrs) {
outAttrs.inputType = InputType.TYPE_CLASS_TEXT;
outAttrs.imeOptions = EditorInfo.IME_ACTION_NONE;
outAttrs.actionLabel = null;
mKeyListener = TextKeyListener.getInstance();
if (mIMEState == IME_STATE_PASSWORD)
outAttrs.inputType |= InputType.TYPE_TEXT_VARIATION_PASSWORD;
else if (mIMETypeHint.equalsIgnoreCase("url"))
outAttrs.inputType |= InputType.TYPE_TEXT_VARIATION_URI;
else if (mIMETypeHint.equalsIgnoreCase("email"))
outAttrs.inputType |= InputType.TYPE_TEXT_VARIATION_EMAIL_ADDRESS;
else if (mIMETypeHint.equalsIgnoreCase("search"))
outAttrs.imeOptions = EditorInfo.IME_ACTION_SEARCH;
else if (mIMETypeHint.equalsIgnoreCase("tel"))
outAttrs.inputType = InputType.TYPE_CLASS_PHONE;
else if (mIMETypeHint.equalsIgnoreCase("number") ||
mIMETypeHint.equalsIgnoreCase("range"))
outAttrs.inputType = InputType.TYPE_CLASS_NUMBER;
else if (mIMETypeHint.equalsIgnoreCase("datetime") ||
mIMETypeHint.equalsIgnoreCase("datetime-local"))
outAttrs.inputType = InputType.TYPE_CLASS_DATETIME |
InputType.TYPE_DATETIME_VARIATION_NORMAL;
else if (mIMETypeHint.equalsIgnoreCase("date"))
outAttrs.inputType = InputType.TYPE_CLASS_DATETIME |
InputType.TYPE_DATETIME_VARIATION_DATE;
else if (mIMETypeHint.equalsIgnoreCase("time"))
outAttrs.inputType = InputType.TYPE_CLASS_DATETIME |
InputType.TYPE_DATETIME_VARIATION_TIME;
if (mIMEActionHint.equalsIgnoreCase("go"))
outAttrs.imeOptions = EditorInfo.IME_ACTION_GO;
else if (mIMEActionHint.equalsIgnoreCase("done"))
outAttrs.imeOptions = EditorInfo.IME_ACTION_DONE;
else if (mIMEActionHint.equalsIgnoreCase("next"))
outAttrs.imeOptions = EditorInfo.IME_ACTION_NEXT;
else if (mIMEActionHint.equalsIgnoreCase("search"))
outAttrs.imeOptions = EditorInfo.IME_ACTION_SEARCH;
else if (mIMEActionHint.equalsIgnoreCase("send"))
outAttrs.imeOptions = EditorInfo.IME_ACTION_SEND;
else if (mIMEActionHint != null && mIMEActionHint.length() != 0)
outAttrs.actionLabel = mIMEActionHint;
inputConnection.reset();
return inputConnection;
}
public void setEditable(String contents)
{
mEditable.removeSpan(inputConnection);
mEditable.replace(0, mEditable.length(), contents);
mEditable.setSpan(inputConnection, 0, contents.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
Selection.setSelection(mEditable, contents.length());
}
public void initEditable(String contents)
{
mEditable = mEditableFactory.newEditable(contents);
mEditable.setSpan(inputConnection, 0, contents.length(), Spanned.SPAN_INCLUSIVE_INCLUSIVE);
Selection.setSelection(mEditable, contents.length());
}
// accelerometer
public void onAccuracyChanged(Sensor sensor, int accuracy)
{
}
public void onSensorChanged(SensorEvent event)
{
GeckoAppShell.sendEventToGecko(new GeckoEvent(event));
}
// geolocation
public void onLocationChanged(Location location)
{
GeckoAppShell.sendEventToGecko(new GeckoEvent(location));
}
public void onProviderDisabled(String provider)
{
}
public void onProviderEnabled(String provider)
{
}
public void onStatusChanged(String provider, int status, Bundle extras)
{
}
// event stuff
public boolean onTouchEvent(MotionEvent event) {
GeckoAppShell.sendEventToGecko(new GeckoEvent(event));
return true;
}
@Override
public boolean onKeyPreIme(int keyCode, KeyEvent event) {
if (event.isSystem())
return super.onKeyPreIme(keyCode, event);
switch (event.getAction()) {
case KeyEvent.ACTION_DOWN:
return onKeyDown(keyCode, event);
case KeyEvent.ACTION_UP:
return onKeyUp(keyCode, event);
case KeyEvent.ACTION_MULTIPLE:
return onKeyMultiple(keyCode, event.getRepeatCount(), event);
}
return super.onKeyPreIme(keyCode, event);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (event.getRepeatCount() == 0) {
event.startTracking();
return true;
} else {
return false;
}
case KeyEvent.KEYCODE_MENU:
if (event.getRepeatCount() == 0) {
event.startTracking();
break;
} else if ((event.getFlags() & KeyEvent.FLAG_LONG_PRESS) != 0) {
break;
}
// Ignore repeats for KEYCODE_MENU; they confuse the widget code.
return false;
case KeyEvent.KEYCODE_VOLUME_UP:
case KeyEvent.KEYCODE_VOLUME_DOWN:
case KeyEvent.KEYCODE_SEARCH:
return false;
case KeyEvent.KEYCODE_DEL:
// See comments in GeckoInputConnection.onKeyDel
if (inputConnection != null &&
inputConnection.onKeyDel()) {
return true;
}
break;
case KeyEvent.KEYCODE_ENTER:
if ((event.getFlags() & KeyEvent.FLAG_EDITOR_ACTION) != 0 &&
mIMEActionHint.equalsIgnoreCase("next"))
event = new KeyEvent(event.getAction(), KeyEvent.KEYCODE_TAB);
break;
default:
break;
}
// KeyListener returns true if it handled the event for us.
if (mIMEState == IME_STATE_DISABLED ||
keyCode == KeyEvent.KEYCODE_ENTER ||
!mKeyListener.onKeyDown(this, mEditable, keyCode, event))
GeckoAppShell.sendEventToGecko(new GeckoEvent(event));
return true;
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (!event.isTracking() || event.isCanceled())
return false;
break;
default:
break;
}
if (mIMEState == IME_STATE_DISABLED ||
keyCode == KeyEvent.KEYCODE_ENTER ||
!mKeyListener.onKeyUp(this, mEditable, keyCode, event))
GeckoAppShell.sendEventToGecko(new GeckoEvent(event));
return true;
}
@Override
public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
GeckoAppShell.sendEventToGecko(new GeckoEvent(event));
return true;
}
@Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
GeckoAppShell.sendEventToGecko(new GeckoEvent(event));
return true;
case KeyEvent.KEYCODE_MENU:
InputMethodManager imm = (InputMethodManager)
getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInputFromWindow(getWindowToken(),
imm.SHOW_FORCED, 0);
return true;
default:
break;
}
return false;
}
// Is this surface valid for drawing into?
boolean mSurfaceValid;
// Are we actively between beginDrawing/endDrawing?
boolean mInDrawing;
// Are we waiting for a buffer to draw in surfaceChanged?
boolean mSyncDraw;
// True if gecko requests a buffer
int mDrawMode;
static boolean mShowingSplashScreen = true;
static String mSplashStatusMsg = "";
// let's not change stuff around while we're in the middle of
// starting drawing, ending drawing, or changing surface
// characteristics
ReentrantLock mSurfaceLock;
// Surface format, from surfaceChanged. Largely
// useless.
int mFormat;
// the dimensions of the surface
int mWidth;
int mHeight;
// the dimensions of the buffer we're using for drawing,
// that is the software buffer or the EGLSurface
int mBufferWidth;
int mBufferHeight;
// IME stuff
public static final int IME_STATE_DISABLED = 0;
public static final int IME_STATE_ENABLED = 1;
public static final int IME_STATE_PASSWORD = 2;
GeckoInputConnection inputConnection;
KeyListener mKeyListener;
Editable mEditable;
Editable.Factory mEditableFactory;
boolean mIMEFocus;
int mIMEState;
String mIMETypeHint;
String mIMEActionHint;
// Software rendering
ByteBuffer mSoftwareBuffer;
Bitmap mSoftwareBitmap;
final SynchronousQueue<ByteBuffer> mSyncBuf = new SynchronousQueue<ByteBuffer>();
}