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Groundwork for sliding key input preview

Browse Source 
Bug: 7548583
Change-Id: Id807af31f581c08ff8074ed1f6766337bea9469f
This commit is contained in:
Tadashi G. Takaoka 2012-11-28 15:24:13 +09:00
parent b5fc0e02d0
commit 547b638194
5 changed files with 93 additions and 41 deletions
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22
java/src/com/android/inputmethod/keyboard/KeyboardView.java
View File

@ -135,7 +135,7 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
// Preview placer view
private final PreviewPlacerView mPreviewPlacerView;
private final int[] mCoordinates = CoordinateUtils.newInstance();
private final int[] mOriginCoords = CoordinateUtils.newInstance();
// Key preview
private static final int PREVIEW_ALPHA = 240;
@ -833,10 +833,9 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
// In transient state.
return;
}
final int[] viewOrigin = CoordinateUtils.newInstance();
getLocationInWindow(viewOrigin);
getLocationInWindow(mOriginCoords);
final DisplayMetrics dm = getResources().getDisplayMetrics();
if (CoordinateUtils.y(viewOrigin) < dm.heightPixels / 4) {
if (CoordinateUtils.y(mOriginCoords) < dm.heightPixels / 4) {
// In transient state.
return;
}
@ -851,11 +850,16 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
Log.w(TAG, "Cannot find android.R.id.content view to add PreviewPlacerView");
} else {
windowContentView.addView(mPreviewPlacerView);
mPreviewPlacerView.setKeyboardViewGeometry(
CoordinateUtils.x(viewOrigin), CoordinateUtils.y(viewOrigin), width, height);
mPreviewPlacerView.setKeyboardViewGeometry(mOriginCoords, width, height);
}
}
@Override
public void showSlidingKeyInputPreview(final PointerTracker tracker) {
locatePreviewPlacerView();
mPreviewPlacerView.showSlidingKeyInputPreview(tracker);
}
public void showGestureFloatingPreviewText(final String gestureFloatingPreviewText) {
locatePreviewPlacerView();
mPreviewPlacerView.setGestureFloatingPreviewText(gestureFloatingPreviewText);
@ -937,13 +941,13 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
// The distance between the top edge of the parent key and the bottom of the visible part
// of the key preview background.
previewParams.mPreviewVisibleOffset = mPreviewOffset - previewText.getPaddingBottom();
getLocationInWindow(mCoordinates);
getLocationInWindow(mOriginCoords);
// The key preview is horizontally aligned with the center of the visible part of the
// parent key. If it doesn't fit in this {@link KeyboardView}, it is moved inward to fit and
// the left/right background is used if such background is specified.
final int statePosition;
int previewX = key.getDrawX() - (previewWidth - keyDrawWidth) / 2
+ CoordinateUtils.x(mCoordinates);
+ CoordinateUtils.x(mOriginCoords);
if (previewX < 0) {
previewX = 0;
statePosition = STATE_LEFT;
@ -956,7 +960,7 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
// The key preview is placed vertically above the top edge of the parent key with an
// arbitrary offset.
final int previewY = key.mY - previewHeight + mPreviewOffset
+ CoordinateUtils.y(mCoordinates);
+ CoordinateUtils.y(mOriginCoords);
if (background != null) {
final int hasMoreKeys = (key.mMoreKeys != null) ? STATE_HAS_MOREKEYS : STATE_NORMAL;

18
java/src/com/android/inputmethod/keyboard/MainKeyboardView.java
View File

@ -49,6 +49,7 @@ import com.android.inputmethod.keyboard.PointerTracker.TimerProxy;
import com.android.inputmethod.keyboard.internal.KeyDrawParams;
import com.android.inputmethod.keyboard.internal.TouchScreenRegulator;
import com.android.inputmethod.latin.Constants;
import com.android.inputmethod.latin.CoordinateUtils;
import com.android.inputmethod.latin.DebugSettings;
import com.android.inputmethod.latin.LatinIME;
import com.android.inputmethod.latin.LatinImeLogger;
@ -672,12 +673,14 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
mMoreKeysPanel = moreKeysPanel;
mMoreKeysPanelPointerTrackerId = tracker.mPointerId;
final int[] lastCoords = CoordinateUtils.newInstance();
tracker.getLastCoordinates(lastCoords);
final boolean keyPreviewEnabled = isKeyPreviewPopupEnabled() && !parentKey.noKeyPreview();
// The more keys keyboard is usually horizontally aligned with the center of the parent key.
// If showMoreKeysKeyboardAtTouchedPoint is true and the key preview is disabled, the more
// keys keyboard is placed at the touch point of the parent key.
final int pointX = (mConfigShowMoreKeysKeyboardAtTouchedPoint && !keyPreviewEnabled)
? tracker.getLastX()
? CoordinateUtils.x(lastCoords)
: parentKey.mX + parentKey.mWidth / 2;
// The more keys keyboard is usually vertically aligned with the top edge of the parent key
// (plus vertical gap). If the key preview is enabled, the more keys keyboard is vertically
@ -687,8 +690,8 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
final int pointY = parentKey.mY + mKeyPreviewDrawParams.mPreviewVisibleOffset;
moreKeysPanel.showMoreKeysPanel(
this, this, pointX, pointY, mMoreKeysWindow, mKeyboardActionListener);
final int translatedX = moreKeysPanel.translateX(tracker.getLastX());
final int translatedY = moreKeysPanel.translateY(tracker.getLastY());
final int translatedX = moreKeysPanel.translateX(CoordinateUtils.x(lastCoords));
final int translatedY = moreKeysPanel.translateY(CoordinateUtils.y(lastCoords));
tracker.onShowMoreKeysPanel(translatedX, translatedY, moreKeysPanel);
dimEntireKeyboard(true);
return true;
@ -788,10 +791,11 @@ public final class MainKeyboardView extends KeyboardView implements PointerTrack
} else if (pointerCount == 2 && oldPointerCount == 1) {
// Single-touch to multi-touch transition.
// Send an up event for the last pointer.
final int lastX = tracker.getLastX();
final int lastY = tracker.getLastY();
mOldKey = tracker.getKeyOn(lastX, lastY);
tracker.onUpEvent(lastX, lastY, eventTime);
final int[] lastCoords = CoordinateUtils.newInstance();
mOldKey = tracker.getKeyOn(
CoordinateUtils.x(lastCoords), CoordinateUtils.y(lastCoords));
tracker.onUpEvent(
CoordinateUtils.x(lastCoords), CoordinateUtils.y(lastCoords), eventTime);
} else if (pointerCount == 1 && oldPointerCount == 1) {
tracker.processMotionEvent(action, x, y, eventTime, this);
} else {

25
java/src/com/android/inputmethod/keyboard/PointerTracker.java
View File

@ -28,6 +28,7 @@ import com.android.inputmethod.keyboard.internal.GestureStrokeWithPreviewPoints;
import com.android.inputmethod.keyboard.internal.PointerTrackerQueue;
import com.android.inputmethod.latin.CollectionUtils;
import com.android.inputmethod.latin.Constants;
import com.android.inputmethod.latin.CoordinateUtils;
import com.android.inputmethod.latin.InputPointers;
import com.android.inputmethod.latin.LatinImeLogger;
import com.android.inputmethod.latin.R;
@ -80,6 +81,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
public void invalidateKey(Key key);
public void showKeyPreview(PointerTracker tracker);
public void dismissKeyPreview(PointerTracker tracker);
public void showSlidingKeyInputPreview(PointerTracker tracker);
public void showGesturePreviewTrail(PointerTracker tracker, boolean isOldestTracker);
}
@ -296,6 +298,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
// The position and time at which first down event occurred.
private long mDownTime;
private int[] mDownCoordinates = CoordinateUtils.newInstance();
private long mUpTime;
// The current key where this pointer is.
@ -540,6 +543,10 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
return mIsInSlidingKeyInput;
}
public boolean isInSlidingKeyInputFromModifier() {
return mIsInSlidingKeyInputFromModifier;
}
public Key getKey() {
return mCurrentKey;
}
@ -642,20 +649,21 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
return mGestureStrokeWithPreviewPoints;
}
public int getLastX() {
return mLastX;
}
public int getLastY() {
return mLastY;
public void getLastCoordinates(final int[] outCoords) {
CoordinateUtils.set(outCoords, mLastX, mLastY);
}
public long getDownTime() {
return mDownTime;
}
public void getDownCoordinates(final int[] outCoords) {
CoordinateUtils.copy(outCoords, mDownCoordinates);
}
private Key onDownKey(final int x, final int y, final long eventTime) {
mDownTime = eventTime;
CoordinateUtils.set(mDownCoordinates, x, y);
mBogusMoveEventDetector.onDownKey();
return onMoveToNewKey(onMoveKeyInternal(x, y), x, y);
}
@ -867,6 +875,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
private void resetSlidingKeyInput() {
mIsInSlidingKeyInput = false;
mIsInSlidingKeyInputFromModifier = false;
mDrawingProxy.showSlidingKeyInputPreview(this);
}
private void onGestureMoveEvent(final int x, final int y, final long eventTime,
@ -1061,6 +1070,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
slideOutFromOldKey(oldKey, x, y);
}
}
mDrawingProxy.showSlidingKeyInputPreview(this);
}
public void onUpEvent(final int x, final int y, final long eventTime) {
@ -1087,7 +1097,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
@Override
public void onPhantomUpEvent(final long eventTime) {
if (DEBUG_EVENT) {
printTouchEvent("onPhntEvent:", getLastX(), getLastY(), eventTime);
printTouchEvent("onPhntEvent:", mLastX, mLastY, eventTime);
}
onUpEventInternal(eventTime);
cancelTracking();
@ -1134,6 +1144,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
}
public void onLongPressed() {
resetSlidingKeyInput();
cancelTracking();
setReleasedKeyGraphics(mCurrentKey);
sPointerTrackerQueue.remove(this);

59
java/src/com/android/inputmethod/keyboard/internal/PreviewPlacerView.java
View File

@ -36,6 +36,7 @@ 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;
@ -47,8 +48,7 @@ public final class PreviewPlacerView extends RelativeLayout {
private final float mGestureFloatingPreviewVerticalPadding;
private final float mGestureFloatingPreviewRoundRadius;
private int mKeyboardViewOriginX;
private int mKeyboardViewOriginY;
private final int[] mKeyboardViewOrigin = CoordinateUtils.newInstance();
private final SparseArray<GesturePreviewTrail> mGesturePreviewTrails =
CollectionUtils.newSparseArray();
@ -68,11 +68,14 @@ public final class PreviewPlacerView extends RelativeLayout {
private final int mGestureFloatingPreviewTextHeight;
// {@link RectF} is needed for {@link Canvas#drawRoundRect(RectF, float, float, Paint)}.
private final RectF mGestureFloatingPreviewRectangle = new RectF();
private int mLastPointerX;
private int mLastPointerY;
private final int[] mLastPointerCoords = CoordinateUtils.newInstance();
private static final char[] TEXT_HEIGHT_REFERENCE_CHAR = { 'M' };
private boolean mDrawsGestureFloatingPreviewText;
private boolean mShowSlidingKeyInputPreview;
private final int[] mRubberBandFrom = CoordinateUtils.newInstance();
private final int[] mRubberBandTo = CoordinateUtils.newInstance();
private final DrawingHandler mDrawingHandler;
private static final class DrawingHandler extends StaticInnerHandlerWrapper<PreviewPlacerView> {
@ -168,9 +171,8 @@ public final class PreviewPlacerView extends RelativeLayout {
setLayerType(LAYER_TYPE_HARDWARE, layerPaint);
}
public void setKeyboardViewGeometry(final int x, final int y, final int w, final int h) {
mKeyboardViewOriginX = x;
mKeyboardViewOriginY = y;
public void setKeyboardViewGeometry(final int[] originCoords, final int w, final int h) {
CoordinateUtils.copy(mKeyboardViewOrigin, originCoords);
mOffscreenOffsetY = (int)(h * GestureStroke.EXTRA_GESTURE_TRAIL_AREA_ABOVE_KEYBOARD_RATIO);
mOffscreenWidth = w;
mOffscreenHeight = mOffscreenOffsetY + h;
@ -186,8 +188,7 @@ public final class PreviewPlacerView extends RelativeLayout {
final boolean needsToUpdateLastPointer =
isOldestTracker && mDrawsGestureFloatingPreviewText;
if (needsToUpdateLastPointer) {
mLastPointerX = tracker.getLastX();
mLastPointerY = tracker.getLastY();
tracker.getLastCoordinates(mLastPointerCoords);
}
if (mDrawsGesturePreviewTrail) {
@ -208,6 +209,17 @@ public final class PreviewPlacerView extends RelativeLayout {
}
}
public void showSlidingKeyInputPreview(final PointerTracker tracker) {
if (!tracker.isInSlidingKeyInputFromModifier()) {
mShowSlidingKeyInputPreview = false;
return;
}
tracker.getDownCoordinates(mRubberBandFrom);
tracker.getLastCoordinates(mRubberBandTo);
mShowSlidingKeyInputPreview = true;
invalidate();
}
@Override
protected void onDetachedFromWindow() {
freeOffscreenBuffer();
@ -234,6 +246,8 @@ public final class PreviewPlacerView extends RelativeLayout {
@Override
public void onDraw(final Canvas canvas) {
super.onDraw(canvas);
final int originX = CoordinateUtils.x(mKeyboardViewOrigin);
final int originY = CoordinateUtils.y(mKeyboardViewOrigin);
if (mDrawsGesturePreviewTrail) {
mayAllocateOffscreenBuffer();
// Draw gesture trails to offscreen buffer.
@ -241,11 +255,11 @@ public final class PreviewPlacerView extends RelativeLayout {
mOffscreenCanvas, mGesturePaint, mOffscreenDirtyRect);
// Transfer offscreen buffer to screen.
if (!mOffscreenDirtyRect.isEmpty()) {
final int offsetY = mKeyboardViewOriginY - mOffscreenOffsetY;
canvas.translate(mKeyboardViewOriginX, offsetY);
final int offsetY = originY - mOffscreenOffsetY;
canvas.translate(originX, offsetY);
canvas.drawBitmap(mOffscreenBuffer, mOffscreenDirtyRect, mOffscreenDirtyRect,
mGesturePaint);
canvas.translate(-mKeyboardViewOriginX, -offsetY);
canvas.translate(-originX, -offsetY);
// Note: Defer clearing the dirty rectangle here because we will get cleared
// rectangle on the canvas.
}
@ -254,9 +268,14 @@ public final class PreviewPlacerView extends RelativeLayout {
}
}
if (mDrawsGestureFloatingPreviewText) {
canvas.translate(mKeyboardViewOriginX, mKeyboardViewOriginY);
canvas.translate(originX, originY);
drawGestureFloatingPreviewText(canvas, mGestureFloatingPreviewText);
canvas.translate(-mKeyboardViewOriginX, -mKeyboardViewOriginY);
canvas.translate(-originX, -originY);
}
if (mShowSlidingKeyInputPreview) {
canvas.translate(originX, originY);
drawSlidingKeyInputPreview(canvas);
canvas.translate(-originX, -originY);
}
}
@ -317,8 +336,6 @@ public final class PreviewPlacerView extends RelativeLayout {
final Paint paint = mTextPaint;
final RectF rectangle = mGestureFloatingPreviewRectangle;
// TODO: Figure out how we should deal with the floating preview text with multiple moving
// fingers.
// Paint the round rectangle background.
final int textHeight = mGestureFloatingPreviewTextHeight;
@ -328,9 +345,11 @@ public final class PreviewPlacerView extends RelativeLayout {
final float rectWidth = textWidth + hPad * 2.0f;
final float rectHeight = textHeight + vPad * 2.0f;
final int canvasWidth = canvas.getWidth();
final float rectX = Math.min(Math.max(mLastPointerX - rectWidth / 2.0f, 0.0f),
final float rectX = Math.min(
Math.max(CoordinateUtils.x(mLastPointerCoords) - rectWidth / 2.0f, 0.0f),
canvasWidth - rectWidth);
final float rectY = mLastPointerY - mGestureFloatingPreviewTextOffset - rectHeight;
final float rectY = CoordinateUtils.y(mLastPointerCoords)
- mGestureFloatingPreviewTextOffset - rectHeight;
rectangle.set(rectX, rectY, rectX + rectWidth, rectY + rectHeight);
final float round = mGestureFloatingPreviewRoundRadius;
paint.setColor(mGestureFloatingPreviewColor);
@ -341,4 +360,8 @@ public final class PreviewPlacerView extends RelativeLayout {
final float textY = rectY + vPad + textHeight;
canvas.drawText(gestureFloatingPreviewText, textX, textY, paint);
}
private void drawSlidingKeyInputPreview(final Canvas canvas) {
// TODO: Implement rubber band preview
}
}

10
java/src/com/android/inputmethod/latin/CoordinateUtils.java
View File

@ -36,4 +36,14 @@ public final class CoordinateUtils {
public static int y(final int[] coords) {
return coords[INDEX_Y];
}
public static void set(final int[] coords, final int x, final int y) {
coords[INDEX_X] = x;
coords[INDEX_Y] = y;
}
public static void copy(final int[] destination, final int[] source) {
destination[INDEX_X] = source[INDEX_X];
destination[INDEX_Y] = source[INDEX_Y];
}
}