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Use integer alpha value instead of factor for animation

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Change-Id: I3099a7625e0176a1d2be42e58d6eb5fa95797bcb
This commit is contained in:
Tadashi G. Takaoka 2012-03-13 16:47:45 +09:00
parent 95fcb0cce9
commit aee5f03d6e
3 changed files with 19 additions and 23 deletions
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2
java/res/values/attrs.xml
View file

@ -139,7 +139,7 @@
<enum name="alwaysDisplay" value="-1" />
</attr>
<attr name="delayBeforeFadeoutLangageOnSpacebar" format="integer" />
<attr name="finalFadeoutFactorOfLanguageOnSpacebar" format="float" />
<attr name="finalAlphaOfLanguageOnSpacebar" format="integer" />
<!-- Key detection hysteresis distance. -->
<attr name="keyHysteresisDistance" format="dimension" />
<!-- Touch noise threshold time in millisecond -->

2
java/res/values/styles.xml
View file

@ -80,7 +80,7 @@
<item name="showMoreKeysKeyboardAtTouchedPoint">@bool/config_show_more_keys_keyboard_at_touched_point</item>
<item name="durationOfFadeoutLanguageOnSpacebar">200</item>
<item name="delayBeforeFadeoutLangageOnSpacebar">1200</item>
<item name="finalFadeoutFactorOfLanguageOnSpacebar">0.5</item>
<item name="finalAlphaOfLanguageOnSpacebar">128</item>
</style>
<style
name="LatinKeyboardView"

38
java/src/com/android/inputmethod/keyboard/LatinKeyboardView.java
View file

@ -21,7 +21,6 @@ import android.content.Context;
import android.content.pm.PackageManager;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Align;
import android.graphics.Typeface;
@ -77,13 +76,14 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
private Drawable mSpaceIcon;
// Stuff to draw language name on spacebar.
private ValueAnimator mLanguageOnSpacebarAnimator;
private float mFinalFadeoutFactorOfLanguageOnSpacebar;
private int mFinalAlphaOfLanguageOnSpacebar;
private int mDurationOfFadeoutLanguageOnSpacebar;
private static final int ALPHA_OPAQUE = 255;
private static final int LANGUAGE_ON_SPACEBAR_NEVER_DISPLAY = 0;
private static final int LANGUAGE_ON_SPACEBAR_ALWAYS_DISPLAY = -1;
private boolean mNeedsToDisplayLanguage;
private Locale mSpacebarLocale;
private float mSpacebarTextFadeFactor = 0.0f;
private int mSpacebarTextAlpha;
private final float mSpacebarTextRatio;
private float mSpacebarTextSize;
private final int mSpacebarTextColor;
@ -344,8 +344,8 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
LANGUAGE_ON_SPACEBAR_NEVER_DISPLAY);
final int delayBeforeFadeoutLanguageOnSpacebar = a.getInt(
R.styleable.LatinKeyboardView_delayBeforeFadeoutLangageOnSpacebar, 0);
mFinalFadeoutFactorOfLanguageOnSpacebar = a.getFloat(
R.styleable.LatinKeyboardView_finalFadeoutFactorOfLanguageOnSpacebar, 0.0f);
mFinalAlphaOfLanguageOnSpacebar = a.getInt(
R.styleable.LatinKeyboardView_finalAlphaOfLanguageOnSpacebar, 0);
final KeyTimerParams keyTimerParams = new KeyTimerParams(a);
mPointerTrackerParams = new PointerTrackerParams(a);
@ -361,8 +361,8 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
PointerTracker.setParameters(mPointerTrackerParams);
mLanguageOnSpacebarAnimator = ValueAnimator.ofFloat(
1.0f, mFinalFadeoutFactorOfLanguageOnSpacebar);
mLanguageOnSpacebarAnimator = ValueAnimator.ofInt(
ALPHA_OPAQUE, mFinalAlphaOfLanguageOnSpacebar);
mLanguageOnSpacebarAnimator.setStartDelay(delayBeforeFadeoutLanguageOnSpacebar);
if (mDurationOfFadeoutLanguageOnSpacebar > 0) {
mLanguageOnSpacebarAnimator.setDuration(mDurationOfFadeoutLanguageOnSpacebar);
@ -370,7 +370,7 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
mLanguageOnSpacebarAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
mSpacebarTextFadeFactor = (Float)animation.getAnimatedValue();
mSpacebarTextAlpha = (Integer)animation.getAnimatedValue();
invalidateKey(mSpaceKey);
}
});
@ -794,15 +794,15 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
mLanguageOnSpacebarAnimator.cancel();
mNeedsToDisplayLanguage = needsToDisplayLanguage;
if (mDurationOfFadeoutLanguageOnSpacebar == LANGUAGE_ON_SPACEBAR_NEVER_DISPLAY) {
mSpacebarTextFadeFactor = 0.0f;
mNeedsToDisplayLanguage = false;
} else if (mDurationOfFadeoutLanguageOnSpacebar == LANGUAGE_ON_SPACEBAR_ALWAYS_DISPLAY) {
mSpacebarTextFadeFactor = 1.0f;
mSpacebarTextAlpha = ALPHA_OPAQUE;
} else {
if (subtypeChanged && needsToDisplayLanguage) {
mSpacebarTextFadeFactor = 1.0f;
mSpacebarTextAlpha = ALPHA_OPAQUE;
mLanguageOnSpacebarAnimator.start();
} else {
mSpacebarTextFadeFactor = mFinalFadeoutFactorOfLanguageOnSpacebar;
mSpacebarTextAlpha = mFinalAlphaOfLanguageOnSpacebar;
}
}
invalidateKey(mSpaceKey);
@ -835,12 +835,6 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
}
}
private static int getSpacebarTextColor(int color, float fadeFactor) {
final int newColor = Color.argb((int)(Color.alpha(color) * fadeFactor),
Color.red(color), Color.green(color), Color.blue(color));
return newColor;
}
// Compute width of text with specified text size using paint.
private int getTextWidth(Paint paint, String text, float textSize) {
paint.setTextSize(textSize);
@ -888,7 +882,7 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
final int width = key.mWidth;
final int height = key.mHeight;
// If application locales are explicitly selected.
// If input subtypes are explicitly selected.
if (mNeedsToDisplayLanguage) {
final String language = layoutLanguageOnSpacebar(paint, mSpacebarLocale, width,
mSpacebarTextSize);
@ -898,9 +892,11 @@ public class LatinKeyboardView extends KeyboardView implements PointerTracker.Ke
final float descent = paint.descent();
final float textHeight = -paint.ascent() + descent;
final float baseline = height / 2 + textHeight / 2;
paint.setColor(getSpacebarTextColor(mSpacebarTextShadowColor, mSpacebarTextFadeFactor));
paint.setColor(mSpacebarTextShadowColor);
paint.setAlpha(mSpacebarTextAlpha);
canvas.drawText(language, width / 2, baseline - descent - 1, paint);
paint.setColor(getSpacebarTextColor(mSpacebarTextColor, mSpacebarTextFadeFactor));
paint.setColor(mSpacebarTextColor);
paint.setAlpha(mSpacebarTextAlpha);
canvas.drawText(language, width / 2, baseline - descent, paint);
}