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Use different reference character for hit label 

Bug: 5255103
Change-Id: I45bd6edfa68abccb9d67fed617b88efad2bfcc04
main
Tadashi G. Takaoka 2011-09-07 12:07:56 +09:00
parent c811ec7328
commit 2ed13003af
2 changed files with 44 additions and 34 deletions
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2
java/res/values/dimens.xml
View File

@ -70,7 +70,7 @@
<dimen name="key_preview_offset">0.1in</dimen>
<dimen name="key_label_horizontal_padding">4dip</dimen>
<dimen name="key_hint_letter_padding">2dp</dimen>
<dimen name="key_hint_letter_padding">1dp</dimen>
<dimen name="key_uppercase_letter_padding">2dp</dimen>
<dimen name="key_preview_height_ics">80sp</dimen>

76
java/src/com/android/inputmethod/keyboard/KeyboardView.java
View File

@ -124,7 +124,8 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
// This map caches key label text width in pixel as value and key label text size as map key.
private static final HashMap<Integer, Float> sTextWidthCache =
new HashMap<Integer, Float>();
private static final String KEY_LABEL_REFERENCE_CHAR = "M";
private static final char[] KEY_LABEL_REFERENCE_CHAR = { 'M' };
private static final char[] KEY_NUMERIC_HINT_LABEL_REFERENCE_CHAR = { '8' };
private final DrawingHandler mDrawingHandler = new DrawingHandler(this);
@ -545,8 +546,8 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
final int labelSize = key.selectTextSize(params.mKeyLetterSize,
params.mKeyLargeLetterSize, params.mKeyLabelSize, params.mKeyHintLabelSize);
paint.setTextSize(labelSize);
final float labelCharHeight = getCharHeight(paint);
final float labelCharWidth = getCharWidth(paint);
final float labelCharHeight = getCharHeight(KEY_LABEL_REFERENCE_CHAR, paint);
final float labelCharWidth = getCharWidth(KEY_LABEL_REFERENCE_CHAR, paint);
// Vertical label text alignment.
final float baseline = centerY + labelCharHeight / 2;
@ -634,20 +635,25 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
}
paint.setColor(hintColor);
paint.setTextSize(hintSize);
final float hintCharWidth = getCharWidth(paint);
final float hintX, hintY;
if (key.hasHintLabel()) {
// The hint label is placed just right of the key label. Used mainly on
// "phone number" layout.
// TODO: Generalize the following calculations.
hintX = positionX + hintCharWidth * 2;
hintY = centerY + getCharHeight(paint) / 2;
hintX = positionX + getCharWidth(KEY_LABEL_REFERENCE_CHAR, paint) * 2;
hintY = centerY + getCharHeight(KEY_LABEL_REFERENCE_CHAR, paint) / 2;
paint.setTextAlign(Align.LEFT);
} else if (key.hasUppercaseLetter()) {
hintX = keyWidth - params.mKeyUppercaseLetterPadding - hintCharWidth / 2;
hintY = -paint.ascent() + params.mKeyUppercaseLetterPadding;
// The hint label is placed at top-right corner of the key. Used mainly on tablet.
hintX = keyWidth - params.mKeyUppercaseLetterPadding
- getCharWidth(KEY_LABEL_REFERENCE_CHAR, paint) / 2;
hintY = -paint.ascent();
paint.setTextAlign(Align.CENTER);
} else { // key.hasHintLetter()
hintX = keyWidth - params.mKeyHintLetterPadding - hintCharWidth / 2;
hintY = -paint.ascent() + params.mKeyHintLetterPadding;
// The hint label is placed at top-right corner of the key. Used mainly on phone.
hintX = keyWidth - params.mKeyHintLetterPadding
- getCharWidth(KEY_NUMERIC_HINT_LABEL_REFERENCE_CHAR, paint) / 2;
hintY = -paint.ascent();
paint.setTextAlign(Align.CENTER);
}
canvas.drawText(hint, 0, hint.length(), hintX, hintY, paint);
@ -690,7 +696,8 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
paint.setTextSize(params.mKeyHintLetterSize);
paint.setColor(params.mKeyHintLabelColor);
paint.setTextAlign(Align.CENTER);
final float hintX = keyWidth - params.mKeyHintLetterPadding - getCharWidth(paint) / 2;
final float hintX = keyWidth - params.mKeyHintLetterPadding
- getCharWidth(KEY_LABEL_REFERENCE_CHAR, paint) / 2;
final float hintY = keyHeight - params.mKeyHintLetterPadding;
canvas.drawText(POPUP_HINT_CHAR, hintX, hintY, paint);
@ -704,37 +711,40 @@ public class KeyboardView extends View implements PointerTracker.DrawingProxy {
private static final Rect sTextBounds = new Rect();
private static float getCharHeight(Paint paint) {
private static int getCharGeometryCacheKey(char reference, Paint paint) {
final int labelSize = (int)paint.getTextSize();
final Float cachedValue = sTextHeightCache.get(labelSize);
final Typeface face = paint.getTypeface();
final int codePointOffset = reference << 15;
if (face == Typeface.DEFAULT) {
return codePointOffset + labelSize;
} else if (face == Typeface.DEFAULT_BOLD) {
return codePointOffset + labelSize + 0x1000;
} else if (face == Typeface.MONOSPACE) {
return codePointOffset + labelSize + 0x2000;
} else {
return codePointOffset + labelSize;
}
}
private static float getCharHeight(char[] character, Paint paint) {
final Integer key = getCharGeometryCacheKey(character[0], paint);
final Float cachedValue = sTextHeightCache.get(key);
if (cachedValue != null)
return cachedValue;
paint.getTextBounds(KEY_LABEL_REFERENCE_CHAR, 0, 1, sTextBounds);
paint.getTextBounds(character, 0, 1, sTextBounds);
final float height = sTextBounds.height();
sTextHeightCache.put(labelSize, height);
sTextHeightCache.put(key, height);
return height;
}
private static float getCharWidth(Paint paint) {
final int labelSize = (int)paint.getTextSize();
final Typeface face = paint.getTypeface();
final Integer key;
if (face == Typeface.DEFAULT) {
key = labelSize;
} else if (face == Typeface.DEFAULT_BOLD) {
key = labelSize + 1000;
} else if (face == Typeface.MONOSPACE) {
key = labelSize + 2000;
} else {
key = labelSize;
}
private static float getCharWidth(char[] character, Paint paint) {
final Integer key = getCharGeometryCacheKey(character[0], paint);
final Float cachedValue = sTextWidthCache.get(key);
if (cachedValue != null)
return cachedValue;
final Float cached = sTextWidthCache.get(key);
if (cached != null)
return cached;
paint.getTextBounds(KEY_LABEL_REFERENCE_CHAR, 0, 1, sTextBounds);
paint.getTextBounds(character, 0, 1, sTextBounds);
final float width = sTextBounds.width();
sTextWidthCache.put(key, width);
return width;