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Cleanup keyboard drawing code 

Change-Id: I084e3ac835ee60b8e463ac10c075adbf08b9a7cb
main
Tadashi G. Takaoka 2011-02-01 14:02:22 +09:00
parent eaa091da78
commit f2fd472dcc
3 changed files with 30 additions and 89 deletions
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98
java/src/com/android/inputmethod/keyboard/KeyboardView.java
View File

@ -68,8 +68,7 @@ import java.util.WeakHashMap;
* @attr ref R.styleable#KeyboardView_popupLayout
*/
public class KeyboardView extends View implements PointerTracker.UIProxy {
private static final String TAG = "KeyboardView";
private static final boolean DEBUG = false;
private static final String TAG = KeyboardView.class.getSimpleName();
private static final boolean DEBUG_SHOW_ALIGN = false;
private static final boolean DEBUG_KEYBOARD_GRID = false;
@ -115,7 +114,6 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
private int[] mOffsetInWindow;
private int mOldPreviewKeyIndex = KeyDetector.NOT_A_KEY;
private boolean mShowPreview = true;
private boolean mShowTouchPoints = true;
private int mPopupPreviewOffsetX;
private int mPopupPreviewOffsetY;
private int mWindowY;
@ -158,18 +156,20 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
// Drawing
/** Whether the keyboard bitmap needs to be redrawn before it's blitted. **/
private boolean mDrawPending;
/** The dirty region in the keyboard bitmap */
private final Rect mDirtyRect = new Rect();
/** The keyboard bitmap for faster updates */
private Bitmap mBuffer;
/** Notes if the keyboard just changed, so that we could possibly reallocate the mBuffer. */
private boolean mKeyboardChanged;
/** The dirty region in the keyboard bitmap */
private final Rect mDirtyRect = new Rect();
/** The key to invalidate. */
private Key mInvalidatedKey;
/** The dirty region for single key drawing */
private final Rect mInvalidatedKeyRect = new Rect();
/** The keyboard bitmap for faster updates */
private Bitmap mBuffer;
/** The canvas for the above mutable keyboard bitmap */
private Canvas mCanvas;
private final Paint mPaint;
private final Rect mPadding;
private final Rect mClipRegion = new Rect(0, 0, 0, 0);
// This map caches key label text height in pixel as value and key label text size as map key.
private final HashMap<Integer, Integer> mTextHeightCache = new HashMap<Integer, Integer>();
// Distance from horizontal center of the key, proportional to key label text height and width.
@ -506,7 +506,6 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
tracker.setKeyboard(keyboard, mKeys, mKeyHysteresisDistance);
}
requestLayout();
// Hint to reallocate the buffer if the size changed
mKeyboardChanged = true;
invalidateAllKeys();
computeProximityThreshold(keyboard, mKeys);
@ -625,13 +624,6 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
mKeyDetector.setProximityThreshold(mostCommonWidth);
}
@Override
public void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// Release the buffer, if any and it will be reallocated on the next draw
mBuffer = null;
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
@ -641,19 +633,18 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
canvas.drawBitmap(mBuffer, 0, 0, null);
}
@SuppressWarnings("unused")
private void onBufferDraw() {
final int width = getWidth();
final int height = getHeight();
if (width == 0 || height == 0)
return;
if (mBuffer == null || mKeyboardChanged) {
if (mBuffer == null || mKeyboardChanged &&
(mBuffer.getWidth() != getWidth() || mBuffer.getHeight() != getHeight())) {
// Make sure our bitmap is at least 1x1
final int width = Math.max(1, getWidth());
final int height = Math.max(1, getHeight());
mBuffer = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
mCanvas = new Canvas(mBuffer);
}
invalidateAllKeys();
mKeyboardChanged = false;
mDirtyRect.union(0, 0, width, height);
}
if (mBuffer == null || mBuffer.getWidth() != width || mBuffer.getHeight() != height) {
mBuffer = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
mCanvas = new Canvas(mBuffer);
}
final Canvas canvas = mCanvas;
canvas.clipRect(mDirtyRect, Op.REPLACE);
@ -662,30 +653,19 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
final Paint paint = mPaint;
final Drawable keyBackground = mKeyBackground;
final Rect clipRegion = mClipRegion;
final Rect padding = mPadding;
final int kbdPaddingLeft = getPaddingLeft();
final int kbdPaddingTop = getPaddingTop();
final Key[] keys = mKeys;
final Key invalidKey = mInvalidatedKey;
final boolean isManualTemporaryUpperCase = mKeyboard.isManualTemporaryUpperCase();
final boolean drawSingleKey = (mInvalidatedKey != null
&& mInvalidatedKeyRect.contains(mDirtyRect));
boolean drawSingleKey = false;
if (invalidKey != null && canvas.getClipBounds(clipRegion)) {
// TODO we should use Rect.inset and Rect.contains here.
// Is clipRegion completely contained within the invalidated key?
if (invalidKey.mX + kbdPaddingLeft - 1 <= clipRegion.left &&
invalidKey.mY + kbdPaddingTop - 1 <= clipRegion.top &&
invalidKey.mX + invalidKey.mWidth + kbdPaddingLeft + 1 >= clipRegion.right &&
invalidKey.mY + invalidKey.mHeight + kbdPaddingTop + 1 >= clipRegion.bottom) {
drawSingleKey = true;
}
}
canvas.drawColor(0x00000000, PorterDuff.Mode.CLEAR);
final int keyCount = keys.length;
for (int i = 0; i < keyCount; i++) {
final Key key = keys[i];
if (drawSingleKey && invalidKey != key) {
if (drawSingleKey && key != mInvalidatedKey) {
continue;
}
int[] drawableState = key.getCurrentDrawableState();
@ -739,8 +719,10 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
} else {
positionX = (key.mWidth + padding.left - padding.right) / 2;
paint.setTextAlign(Align.CENTER);
if (DEBUG_SHOW_ALIGN && label.length() > 1)
drawVerticalLine(canvas, positionX, rowHeight, 0xc0008080, new Paint());
if (DEBUG_SHOW_ALIGN) {
if (label.length() > 1)
drawVerticalLine(canvas, positionX, rowHeight, 0xc0008080, new Paint());
}
}
if (key.mManualTemporaryUpperCaseHintIcon != null && isManualTemporaryUpperCase) {
paint.setColor(mKeyTextColorDisabled);
@ -811,32 +793,13 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
canvas.drawLine(0, i * ch, cw * mKeyboard.GRID_WIDTH, i * ch, p);
}
mInvalidatedKey = null;
// Overlay a dark rectangle to dim the keyboard
if (mMiniKeyboardView != null) {
paint.setColor((int) (mBackgroundDimAmount * 0xFF) << 24);
canvas.drawRect(0, 0, getWidth(), getHeight(), paint);
}
if (DEBUG) {
if (mShowTouchPoints) {
for (PointerTracker tracker : mPointerTrackers) {
int startX = tracker.getStartX();
int startY = tracker.getStartY();
int lastX = tracker.getLastX();
int lastY = tracker.getLastY();
paint.setAlpha(128);
paint.setColor(0xFFFF0000);
canvas.drawCircle(startX, startY, 3, paint);
canvas.drawLine(startX, startY, lastX, lastY, paint);
paint.setColor(0xFF0000FF);
canvas.drawCircle(lastX, lastY, 3, paint);
paint.setColor(0xFF00FF00);
canvas.drawCircle((startX + lastX) / 2, (startY + lastY) / 2, 2, paint);
}
}
canvas.drawRect(0, 0, width, height, paint);
}
mInvalidatedKey = null;
mDrawPending = false;
mDirtyRect.setEmpty();
}
@ -1050,12 +1013,11 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
if (key == null)
return;
mInvalidatedKey = key;
// TODO we should clean up this and record key's region to use in onBufferDraw.
mDirtyRect.union(key.mX + getPaddingLeft(), key.mY + getPaddingTop(),
key.mX + key.mWidth + getPaddingLeft(), key.mY + key.mHeight + getPaddingTop());
mInvalidatedKeyRect.set(0, 0, key.mWidth, key.mHeight);
mInvalidatedKeyRect.offset(key.mX + getPaddingLeft(), key.mY + getPaddingTop());
mDirtyRect.union(mInvalidatedKeyRect);
onBufferDraw();
invalidate(key.mX + getPaddingLeft(), key.mY + getPaddingTop(),
key.mX + key.mWidth + getPaddingLeft(), key.mY + key.mHeight + getPaddingTop());
invalidate(mInvalidatedKeyRect);
}
private boolean openPopupIfRequired(int keyIndex, PointerTracker tracker) {

9
java/src/com/android/inputmethod/keyboard/PointerTracker.java
View File

@ -490,15 +490,6 @@ public class PointerTracker {
return mKeyState.getDownTime();
}
// These package scope methods are only for debugging purpose.
/* package */ int getStartX() {
return mKeyState.getStartX();
}
/* package */ int getStartY() {
return mKeyState.getStartY();
}
private boolean isMinorMoveBounce(int x, int y, int newKey) {
if (mKeys == null || mKeyHysteresisDistanceSquared < 0)
throw new IllegalStateException("keyboard and/or hysteresis not set");

12
java/src/com/android/inputmethod/keyboard/PointerTrackerKeyState.java
View File

@ -23,8 +23,6 @@ package com.android.inputmethod.keyboard;
private final KeyDetector mKeyDetector;
// The position and time at which first down event occurred.
private int mStartX;
private int mStartY;
private long mDownTime;
private long mUpTime;
@ -54,14 +52,6 @@ package com.android.inputmethod.keyboard;
return mKeyY;
}
public int getStartX() {
return mStartX;
}
public int getStartY() {
return mStartY;
}
public long getDownTime() {
return mDownTime;
}
@ -79,8 +69,6 @@ package com.android.inputmethod.keyboard;
}
public int onDownKey(int x, int y, long eventTime) {
mStartX = x;
mStartY = y;
mDownTime = eventTime;
return onMoveToNewKey(onMoveKeyInternal(x, y), x, y);
}