Add GestureTrailsPreview class
Change-Id: Ibf9dff6d834d34b4134dbe38a609fd983731eedcmain
Tadashi G. Takaoka
parent
a237cd4a02
commit
470a5805e1
|
|
@ -0,0 +1,201 @@
|
|||
/*
|
||||
* Copyright (C) 2013 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package com.android.inputmethod.keyboard.internal;
|
||||
|
||||
import android.content.res.TypedArray;
|
||||
import android.graphics.Bitmap;
|
||||
import android.graphics.Canvas;
|
||||
import android.graphics.Color;
|
||||
import android.graphics.Paint;
|
||||
import android.graphics.PorterDuff;
|
||||
import android.graphics.PorterDuffXfermode;
|
||||
import android.graphics.Rect;
|
||||
import android.os.Message;
|
||||
import android.util.SparseArray;
|
||||
import android.view.View;
|
||||
|
||||
import com.android.inputmethod.keyboard.PointerTracker;
|
||||
import com.android.inputmethod.keyboard.internal.GesturePreviewTrail.Params;
|
||||
import com.android.inputmethod.latin.CollectionUtils;
|
||||
import com.android.inputmethod.latin.StaticInnerHandlerWrapper;
|
||||
|
||||
/**
|
||||
* Draw gesture trail preview graphics during gesture.
|
||||
*/
|
||||
public final class GestureTrailsPreview extends AbstractDrawingPreview {
|
||||
private final SparseArray<GesturePreviewTrail> mGesturePreviewTrails =
|
||||
CollectionUtils.newSparseArray();
|
||||
private final Params mGesturePreviewTrailParams;
|
||||
private final Paint mGesturePaint;
|
||||
private int mOffscreenWidth;
|
||||
private int mOffscreenHeight;
|
||||
private int mOffscreenOffsetY;
|
||||
private Bitmap mOffscreenBuffer;
|
||||
private final Canvas mOffscreenCanvas = new Canvas();
|
||||
private final Rect mOffscreenSrcRect = new Rect();
|
||||
private final Rect mDirtyRect = new Rect();
|
||||
private final Rect mGesturePreviewTrailBoundsRect = new Rect(); // per trail
|
||||
|
||||
private final DrawingHandler mDrawingHandler;
|
||||
|
||||
private static final class DrawingHandler
|
||||
extends StaticInnerHandlerWrapper<GestureTrailsPreview> {
|
||||
private static final int MSG_UPDATE_GESTURE_PREVIEW_TRAIL = 0;
|
||||
|
||||
private final Params mGesturePreviewTrailParams;
|
||||
|
||||
public DrawingHandler(final GestureTrailsPreview outerInstance,
|
||||
final Params gesturePreviewTrailParams) {
|
||||
super(outerInstance);
|
||||
mGesturePreviewTrailParams = gesturePreviewTrailParams;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void handleMessage(final Message msg) {
|
||||
final GestureTrailsPreview preview = getOuterInstance();
|
||||
if (preview == null) return;
|
||||
switch (msg.what) {
|
||||
case MSG_UPDATE_GESTURE_PREVIEW_TRAIL:
|
||||
preview.getDrawingView().invalidate();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
public void postUpdateGestureTrailPreview() {
|
||||
removeMessages(MSG_UPDATE_GESTURE_PREVIEW_TRAIL);
|
||||
sendMessageDelayed(obtainMessage(MSG_UPDATE_GESTURE_PREVIEW_TRAIL),
|
||||
mGesturePreviewTrailParams.mUpdateInterval);
|
||||
}
|
||||
}
|
||||
|
||||
public GestureTrailsPreview(final View drawingView, final TypedArray mainKeyboardViewAttr) {
|
||||
super(drawingView);
|
||||
mGesturePreviewTrailParams = new Params(mainKeyboardViewAttr);
|
||||
mDrawingHandler = new DrawingHandler(this, mGesturePreviewTrailParams);
|
||||
final Paint gesturePaint = new Paint();
|
||||
gesturePaint.setAntiAlias(true);
|
||||
gesturePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC));
|
||||
mGesturePaint = gesturePaint;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void setKeyboardGeometry(final int[] originCoords, final int width, final int height) {
|
||||
mOffscreenOffsetY = (int)(
|
||||
height * GestureStroke.EXTRA_GESTURE_TRAIL_AREA_ABOVE_KEYBOARD_RATIO);
|
||||
mOffscreenWidth = width;
|
||||
mOffscreenHeight = mOffscreenOffsetY + height;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onDetachFromWindow() {
|
||||
freeOffscreenBuffer();
|
||||
}
|
||||
|
||||
private void freeOffscreenBuffer() {
|
||||
if (mOffscreenBuffer != null) {
|
||||
mOffscreenBuffer.recycle();
|
||||
mOffscreenBuffer = null;
|
||||
}
|
||||
}
|
||||
|
||||
private void mayAllocateOffscreenBuffer() {
|
||||
if (mOffscreenBuffer != null && mOffscreenBuffer.getWidth() == mOffscreenWidth
|
||||
&& mOffscreenBuffer.getHeight() == mOffscreenHeight) {
|
||||
return;
|
||||
}
|
||||
freeOffscreenBuffer();
|
||||
mOffscreenBuffer = Bitmap.createBitmap(
|
||||
mOffscreenWidth, mOffscreenHeight, Bitmap.Config.ARGB_8888);
|
||||
mOffscreenCanvas.setBitmap(mOffscreenBuffer);
|
||||
mOffscreenCanvas.translate(0, mOffscreenOffsetY);
|
||||
}
|
||||
|
||||
private boolean drawGestureTrails(final Canvas offscreenCanvas, final Paint paint,
|
||||
final Rect dirtyRect) {
|
||||
// Clear previous dirty rectangle.
|
||||
if (!dirtyRect.isEmpty()) {
|
||||
paint.setColor(Color.TRANSPARENT);
|
||||
paint.setStyle(Paint.Style.FILL);
|
||||
offscreenCanvas.drawRect(dirtyRect, paint);
|
||||
}
|
||||
dirtyRect.setEmpty();
|
||||
boolean needsUpdatingGesturePreviewTrail = false;
|
||||
// Draw gesture trails to offscreen buffer.
|
||||
synchronized (mGesturePreviewTrails) {
|
||||
// Trails count == fingers count that have ever been active.
|
||||
final int trailsCount = mGesturePreviewTrails.size();
|
||||
for (int index = 0; index < trailsCount; index++) {
|
||||
final GesturePreviewTrail trail = mGesturePreviewTrails.valueAt(index);
|
||||
needsUpdatingGesturePreviewTrail |=
|
||||
trail.drawGestureTrail(offscreenCanvas, paint,
|
||||
mGesturePreviewTrailBoundsRect, mGesturePreviewTrailParams);
|
||||
// {@link #mGesturePreviewTrailBoundsRect} has bounding box of the trail.
|
||||
dirtyRect.union(mGesturePreviewTrailBoundsRect);
|
||||
}
|
||||
}
|
||||
return needsUpdatingGesturePreviewTrail;
|
||||
}
|
||||
|
||||
/**
|
||||
* Draws the preview
|
||||
* @param canvas The canvas where the preview is drawn.
|
||||
*/
|
||||
@Override
|
||||
public void drawPreview(final Canvas canvas) {
|
||||
if (!isPreviewEnabled()) {
|
||||
return;
|
||||
}
|
||||
mayAllocateOffscreenBuffer();
|
||||
// Draw gesture trails to offscreen buffer.
|
||||
final boolean needsUpdatingGesturePreviewTrail = drawGestureTrails(
|
||||
mOffscreenCanvas, mGesturePaint, mDirtyRect);
|
||||
if (needsUpdatingGesturePreviewTrail) {
|
||||
mDrawingHandler.postUpdateGestureTrailPreview();
|
||||
}
|
||||
// Transfer offscreen buffer to screen.
|
||||
if (!mDirtyRect.isEmpty()) {
|
||||
mOffscreenSrcRect.set(mDirtyRect);
|
||||
mOffscreenSrcRect.offset(0, mOffscreenOffsetY);
|
||||
canvas.drawBitmap(mOffscreenBuffer, mOffscreenSrcRect, mDirtyRect, null);
|
||||
// Note: Defer clearing the dirty rectangle here because we will get cleared
|
||||
// rectangle on the canvas.
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the position of the preview.
|
||||
* @param tracker The new location of the preview is based on the points in PointerTracker.
|
||||
*/
|
||||
@Override
|
||||
public void setPreviewPosition(final PointerTracker tracker) {
|
||||
if (!isPreviewEnabled()) {
|
||||
return;
|
||||
}
|
||||
GesturePreviewTrail trail;
|
||||
synchronized (mGesturePreviewTrails) {
|
||||
trail = mGesturePreviewTrails.get(tracker.mPointerId);
|
||||
if (trail == null) {
|
||||
trail = new GesturePreviewTrail();
|
||||
mGesturePreviewTrails.put(tracker.mPointerId, trail);
|
||||
}
|
||||
}
|
||||
trail.addStroke(tracker.getGestureStrokeWithPreviewPoints(), tracker.getDownTime());
|
||||
|
||||
// TODO: Should narrow the invalidate region.
|
||||
getDrawingView().invalidate();
|
||||
}
|
||||
}
|
||||
|
|
@ -18,79 +18,26 @@ package com.android.inputmethod.keyboard.internal;
|
|||
|
||||
import android.content.Context;
|
||||
import android.content.res.TypedArray;
|
||||
import android.graphics.Bitmap;
|
||||
import android.graphics.Canvas;
|
||||
import android.graphics.Color;
|
||||
import android.graphics.Paint;
|
||||
import android.graphics.PorterDuff;
|
||||
import android.graphics.PorterDuffXfermode;
|
||||
import android.graphics.Rect;
|
||||
import android.os.Message;
|
||||
import android.util.AttributeSet;
|
||||
import android.util.SparseArray;
|
||||
import android.widget.RelativeLayout;
|
||||
|
||||
import com.android.inputmethod.keyboard.PointerTracker;
|
||||
import com.android.inputmethod.keyboard.internal.GesturePreviewTrail.Params;
|
||||
import com.android.inputmethod.latin.CollectionUtils;
|
||||
import com.android.inputmethod.latin.CoordinateUtils;
|
||||
import com.android.inputmethod.latin.R;
|
||||
import com.android.inputmethod.latin.StaticInnerHandlerWrapper;
|
||||
import com.android.inputmethod.latin.SuggestedWords;
|
||||
|
||||
public final class PreviewPlacerView extends RelativeLayout {
|
||||
private final int[] mKeyboardViewOrigin = CoordinateUtils.newInstance();
|
||||
|
||||
// TODO: Separate gesture preview trail drawing code into separate class.
|
||||
private final SparseArray<GesturePreviewTrail> mGesturePreviewTrails =
|
||||
CollectionUtils.newSparseArray();
|
||||
private final Params mGesturePreviewTrailParams;
|
||||
private final Paint mGesturePaint;
|
||||
private boolean mDrawsGesturePreviewTrail;
|
||||
private int mOffscreenWidth;
|
||||
private int mOffscreenHeight;
|
||||
private int mOffscreenOffsetY;
|
||||
private Bitmap mOffscreenBuffer;
|
||||
private final Canvas mOffscreenCanvas = new Canvas();
|
||||
private final Rect mOffscreenSrcRect = new Rect();
|
||||
private final Rect mDirtyRect = new Rect();
|
||||
private final Rect mGesturePreviewTrailBoundsRect = new Rect(); // per trail
|
||||
// TODO: Move these AbstractDrawingPvreiew objects to MainKeyboardView.
|
||||
private final GestureFloatingPreviewText mGestureFloatingPreviewText;
|
||||
private final GestureTrailsPreview mGestureTrailsPreview;
|
||||
private final SlidingKeyInputPreview mSlidingKeyInputPreview;
|
||||
|
||||
private final DrawingHandler mDrawingHandler;
|
||||
|
||||
// TODO: Remove drawing handler.
|
||||
private static final class DrawingHandler extends StaticInnerHandlerWrapper<PreviewPlacerView> {
|
||||
private static final int MSG_UPDATE_GESTURE_PREVIEW_TRAIL = 0;
|
||||
|
||||
private final Params mGesturePreviewTrailParams;
|
||||
|
||||
public DrawingHandler(final PreviewPlacerView outerInstance,
|
||||
final Params gesturePreviewTrailParams) {
|
||||
super(outerInstance);
|
||||
mGesturePreviewTrailParams = gesturePreviewTrailParams;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void handleMessage(final Message msg) {
|
||||
final PreviewPlacerView placerView = getOuterInstance();
|
||||
if (placerView == null) return;
|
||||
switch (msg.what) {
|
||||
case MSG_UPDATE_GESTURE_PREVIEW_TRAIL:
|
||||
placerView.invalidate();
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
public void postUpdateGestureTrailPreview() {
|
||||
removeMessages(MSG_UPDATE_GESTURE_PREVIEW_TRAIL);
|
||||
sendMessageDelayed(obtainMessage(MSG_UPDATE_GESTURE_PREVIEW_TRAIL),
|
||||
mGesturePreviewTrailParams.mUpdateInterval);
|
||||
}
|
||||
}
|
||||
|
||||
public PreviewPlacerView(final Context context, final AttributeSet attrs) {
|
||||
this(context, attrs, R.attr.keyboardViewStyle);
|
||||
}
|
||||
|
|
@ -104,17 +51,10 @@ public final class PreviewPlacerView extends RelativeLayout {
|
|||
// TODO: mGestureFloatingPreviewText could be an instance of GestureFloatingPreviewText or
|
||||
// MultiGesturePreviewText, depending on the user's choice in the settings.
|
||||
mGestureFloatingPreviewText = new GestureFloatingPreviewText(this, mainKeyboardViewAttr);
|
||||
mGesturePreviewTrailParams = new Params(mainKeyboardViewAttr);
|
||||
mGestureTrailsPreview = new GestureTrailsPreview(this, mainKeyboardViewAttr);
|
||||
mSlidingKeyInputPreview = new SlidingKeyInputPreview(this, mainKeyboardViewAttr);
|
||||
mainKeyboardViewAttr.recycle();
|
||||
|
||||
mDrawingHandler = new DrawingHandler(this, mGesturePreviewTrailParams);
|
||||
|
||||
final Paint gesturePaint = new Paint();
|
||||
gesturePaint.setAntiAlias(true);
|
||||
gesturePaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC));
|
||||
mGesturePaint = gesturePaint;
|
||||
|
||||
final Paint layerPaint = new Paint();
|
||||
layerPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_OVER));
|
||||
setLayerType(LAYER_TYPE_HARDWARE, layerPaint);
|
||||
|
|
@ -124,36 +64,21 @@ public final class PreviewPlacerView extends RelativeLayout {
|
|||
final int height) {
|
||||
CoordinateUtils.copy(mKeyboardViewOrigin, originCoords);
|
||||
mGestureFloatingPreviewText.setKeyboardGeometry(originCoords, width, height);
|
||||
mGestureTrailsPreview.setKeyboardGeometry(originCoords, width, height);
|
||||
mSlidingKeyInputPreview.setKeyboardGeometry(originCoords, width, height);
|
||||
mOffscreenOffsetY = (int)(
|
||||
height * GestureStroke.EXTRA_GESTURE_TRAIL_AREA_ABOVE_KEYBOARD_RATIO);
|
||||
mOffscreenWidth = width;
|
||||
mOffscreenHeight = mOffscreenOffsetY + height;
|
||||
}
|
||||
|
||||
// TODO: Move this method to MainKeyboardView
|
||||
public void setGesturePreviewMode(final boolean drawsGesturePreviewTrail,
|
||||
final boolean drawsGestureFloatingPreviewText) {
|
||||
mDrawsGesturePreviewTrail = drawsGesturePreviewTrail;
|
||||
mGestureFloatingPreviewText.setPreviewEnabled(drawsGestureFloatingPreviewText);
|
||||
mGestureTrailsPreview.setPreviewEnabled(drawsGesturePreviewTrail);
|
||||
}
|
||||
|
||||
// TODO: Move this method to MainKeyboardView
|
||||
public void invalidatePointer(final PointerTracker tracker) {
|
||||
mGestureFloatingPreviewText.setPreviewPosition(tracker);
|
||||
|
||||
if (mDrawsGesturePreviewTrail) {
|
||||
GesturePreviewTrail trail;
|
||||
synchronized (mGesturePreviewTrails) {
|
||||
trail = mGesturePreviewTrails.get(tracker.mPointerId);
|
||||
if (trail == null) {
|
||||
trail = new GesturePreviewTrail();
|
||||
mGesturePreviewTrails.put(tracker.mPointerId, trail);
|
||||
}
|
||||
}
|
||||
trail.addStroke(tracker.getGestureStrokeWithPreviewPoints(), tracker.getDownTime());
|
||||
|
||||
// TODO: Should narrow the invalidate region.
|
||||
invalidate();
|
||||
}
|
||||
mGestureTrailsPreview.setPreviewPosition(tracker);
|
||||
}
|
||||
|
||||
// TODO: Move this method to MainKeyboardView
|
||||
|
|
@ -170,27 +95,8 @@ public final class PreviewPlacerView extends RelativeLayout {
|
|||
protected void onDetachedFromWindow() {
|
||||
super.onDetachedFromWindow();
|
||||
mGestureFloatingPreviewText.onDetachFromWindow();
|
||||
mGestureTrailsPreview.onDetachFromWindow();
|
||||
mSlidingKeyInputPreview.onDetachFromWindow();
|
||||
freeOffscreenBuffer();
|
||||
}
|
||||
|
||||
private void freeOffscreenBuffer() {
|
||||
if (mOffscreenBuffer != null) {
|
||||
mOffscreenBuffer.recycle();
|
||||
mOffscreenBuffer = null;
|
||||
}
|
||||
}
|
||||
|
||||
private void mayAllocateOffscreenBuffer() {
|
||||
if (mOffscreenBuffer != null && mOffscreenBuffer.getWidth() == mOffscreenWidth
|
||||
&& mOffscreenBuffer.getHeight() == mOffscreenHeight) {
|
||||
return;
|
||||
}
|
||||
freeOffscreenBuffer();
|
||||
mOffscreenBuffer = Bitmap.createBitmap(
|
||||
mOffscreenWidth, mOffscreenHeight, Bitmap.Config.ARGB_8888);
|
||||
mOffscreenCanvas.setBitmap(mOffscreenBuffer);
|
||||
mOffscreenCanvas.translate(0, mOffscreenOffsetY);
|
||||
}
|
||||
|
||||
@Override
|
||||
|
|
@ -199,54 +105,12 @@ public final class PreviewPlacerView extends RelativeLayout {
|
|||
final int originX = CoordinateUtils.x(mKeyboardViewOrigin);
|
||||
final int originY = CoordinateUtils.y(mKeyboardViewOrigin);
|
||||
canvas.translate(originX, originY);
|
||||
if (mDrawsGesturePreviewTrail) {
|
||||
mayAllocateOffscreenBuffer();
|
||||
// Draw gesture trails to offscreen buffer.
|
||||
final boolean needsUpdatingGesturePreviewTrail = drawGestureTrails(
|
||||
mOffscreenCanvas, mGesturePaint, mDirtyRect);
|
||||
if (needsUpdatingGesturePreviewTrail) {
|
||||
mDrawingHandler.postUpdateGestureTrailPreview();
|
||||
}
|
||||
// Transfer offscreen buffer to screen.
|
||||
if (!mDirtyRect.isEmpty()) {
|
||||
mOffscreenSrcRect.set(mDirtyRect);
|
||||
mOffscreenSrcRect.offset(0, mOffscreenOffsetY);
|
||||
canvas.drawBitmap(mOffscreenBuffer, mOffscreenSrcRect, mDirtyRect, null);
|
||||
// Note: Defer clearing the dirty rectangle here because we will get cleared
|
||||
// rectangle on the canvas.
|
||||
}
|
||||
}
|
||||
mGestureFloatingPreviewText.drawPreview(canvas);
|
||||
mGestureTrailsPreview.drawPreview(canvas);
|
||||
mSlidingKeyInputPreview.drawPreview(canvas);
|
||||
canvas.translate(-originX, -originY);
|
||||
}
|
||||
|
||||
private boolean drawGestureTrails(final Canvas offscreenCanvas, final Paint paint,
|
||||
final Rect dirtyRect) {
|
||||
// Clear previous dirty rectangle.
|
||||
if (!dirtyRect.isEmpty()) {
|
||||
paint.setColor(Color.TRANSPARENT);
|
||||
paint.setStyle(Paint.Style.FILL);
|
||||
offscreenCanvas.drawRect(dirtyRect, paint);
|
||||
}
|
||||
dirtyRect.setEmpty();
|
||||
boolean needsUpdatingGesturePreviewTrail = false;
|
||||
// Draw gesture trails to offscreen buffer.
|
||||
synchronized (mGesturePreviewTrails) {
|
||||
// Trails count == fingers count that have ever been active.
|
||||
final int trailsCount = mGesturePreviewTrails.size();
|
||||
for (int index = 0; index < trailsCount; index++) {
|
||||
final GesturePreviewTrail trail = mGesturePreviewTrails.valueAt(index);
|
||||
needsUpdatingGesturePreviewTrail |=
|
||||
trail.drawGestureTrail(offscreenCanvas, paint,
|
||||
mGesturePreviewTrailBoundsRect, mGesturePreviewTrailParams);
|
||||
// {@link #mGesturePreviewTrailBoundsRect} has bounding box of the trail.
|
||||
dirtyRect.union(mGesturePreviewTrailBoundsRect);
|
||||
}
|
||||
}
|
||||
return needsUpdatingGesturePreviewTrail;
|
||||
}
|
||||
|
||||
// TODO: Move this method to MainKeyboardView.
|
||||
public void setGestureFloatingPreviewText(final SuggestedWords suggestedWords) {
|
||||
mGestureFloatingPreviewText.setSuggetedWords(suggestedWords);
|
||||
|
|
|
|||
Loading…
Reference in New Issue