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Implementation of
RobotoTextAppearanceSpan.
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robototextview/src/main/java/com/devspark/robototextview/style/RobotoTextAppearanceSpan.java
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| @@ -0,0 +1,157 @@ | ||
| package com.devspark.robototextview.style; | ||
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| import android.content.Context; | ||
| import android.content.pm.PackageInfo; | ||
| import android.content.pm.PackageManager; | ||
| import android.content.res.ColorStateList; | ||
| import android.content.res.TypedArray; | ||
| import android.graphics.Typeface; | ||
| import android.support.annotation.NonNull; | ||
| import android.support.annotation.Nullable; | ||
| import android.text.TextPaint; | ||
| import android.text.style.MetricAffectingSpan; | ||
| import android.util.Log; | ||
| import android.util.SparseIntArray; | ||
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| import com.devspark.robototextview.R; | ||
| import com.devspark.robototextview.util.RobotoTypefaceManager; | ||
| import com.devspark.robototextview.util.RobotoTypefaceUtils; | ||
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| /** | ||
| * Sets the text color, size and typeface to match a TextAppearance resource. | ||
| */ | ||
| public class RobotoTextAppearanceSpan extends MetricAffectingSpan { | ||
| private static final int[] TEXT_ATTRS = new int[]{ | ||
| android.R.attr.textSize, android.R.attr.textColor, android.R.attr.textColorLink}; | ||
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| private final Typeface mTypeface; | ||
| private final int mTextSize; | ||
| private final ColorStateList mTextColor; | ||
| private final ColorStateList mTextColorLink; | ||
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| /** | ||
| * Uses the specified TextAppearance resource to determine the | ||
| * text appearance. The <code>appearance</code> should be, for example, | ||
| * <code>android.R.style.TextAppearance_Small</code>. | ||
| */ | ||
| public RobotoTextAppearanceSpan(Context context, int appearance) { | ||
| this(context, appearance, -1); | ||
| } | ||
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|
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| /** | ||
| * Uses the specified TextAppearance resource to determine the | ||
| * text appearance, and the specified text color resource | ||
| * to determine the color. The <code>appearance</code> should be, | ||
| * for example, <code>android.R.style.TextAppearance_Small</code>, | ||
| * and the <code>colorList</code> should be, for example, | ||
| * <code>android.R.styleable.Theme_textColorPrimary</code>. | ||
| */ | ||
| public RobotoTextAppearanceSpan(Context context, int appearance, int colorList) { | ||
| TypedArray a = context.obtainStyledAttributes(appearance, R.styleable.RobotoTextView); | ||
| mTypeface = RobotoTypefaceUtils.typefaceFromAttrs(context, a); | ||
| a.recycle(); | ||
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| ColorStateList textColor; | ||
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| a = context.obtainStyledAttributes(appearance, TEXT_ATTRS); | ||
| SparseIntArray attrsIndexes = textAttrsIndexes(); | ||
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| textColor = a.getColorStateList(attrsIndexes.get(android.R.attr.textColor)); | ||
| mTextColorLink = a.getColorStateList(attrsIndexes.get(android.R.attr.textColorLink)); | ||
| mTextSize = a.getDimensionPixelSize(attrsIndexes.get(android.R.attr.textSize), -1); | ||
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| a.recycle(); | ||
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| if (colorList >= 0) { | ||
| a = context.obtainStyledAttributes(themeResId(context), TEXT_ATTRS); | ||
| textColor = a.getColorStateList(colorList); | ||
| a.recycle(); | ||
| } | ||
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| mTextColor = textColor; | ||
| } | ||
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| /** | ||
| * Makes text be drawn with the specified typeface, size and colors. | ||
| */ | ||
| public RobotoTextAppearanceSpan(Context context, int typefaceId, int size, | ||
| ColorStateList color, ColorStateList linkColor) { | ||
| mTypeface = RobotoTypefaceManager.obtainTypeface(context, typefaceId); | ||
| mTextSize = size; | ||
| mTextColor = color; | ||
| mTextColorLink = linkColor; | ||
| } | ||
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| private int themeResId(Context context) { | ||
| try { | ||
| String packageName = context.getPackageName(); | ||
| PackageInfo packageInfo = context.getPackageManager() | ||
| .getPackageInfo(packageName, PackageManager.GET_META_DATA); | ||
| return packageInfo.applicationInfo.theme; | ||
| } catch (PackageManager.NameNotFoundException e) { | ||
| Log.w(getClass().getSimpleName(), e); | ||
| } | ||
| return -1; | ||
| } | ||
|
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| private SparseIntArray textAttrsIndexes() { | ||
| SparseIntArray indexes = new SparseIntArray(TEXT_ATTRS.length); | ||
| for (int i = 0; i < TEXT_ATTRS.length; i++) { | ||
| indexes.put(TEXT_ATTRS[i], i); | ||
| } | ||
| return indexes; | ||
| } | ||
|
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| /** | ||
| * Returns the typeface specified by this span. | ||
| */ | ||
| @NonNull | ||
| public Typeface getTypeface() { | ||
| return mTypeface; | ||
| } | ||
|
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| /** | ||
| * Returns the text size specified by this span, or <code>-1</code> | ||
| * if it does not specify one. | ||
| */ | ||
| public int getTextSize() { | ||
| return mTextSize; | ||
| } | ||
|
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| /** | ||
| * Returns the text color specified by this span, or <code>null</code> | ||
| * if it does not specify one. | ||
| */ | ||
| @Nullable | ||
| public ColorStateList getTextColor() { | ||
| return mTextColor; | ||
| } | ||
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| /** | ||
| * Returns the link color specified by this span, or <code>null</code> | ||
| * if it does not specify one. | ||
| */ | ||
| @Nullable | ||
| public ColorStateList getLinkTextColor() { | ||
| return mTextColorLink; | ||
| } | ||
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| @Override | ||
| public void updateDrawState(TextPaint tp) { | ||
| updateMeasureState(tp); | ||
| if (mTextColor != null) { | ||
| tp.setColor(mTextColor.getColorForState(tp.drawableState, 0)); | ||
| } | ||
| if (mTextColorLink != null) { | ||
| tp.linkColor = mTextColorLink.getColorForState(tp.drawableState, 0); | ||
| } | ||
| } | ||
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| @Override | ||
| public void updateMeasureState(TextPaint tp) { | ||
| RobotoTypefaceUtils.setup(tp, mTypeface); | ||
| if (mTextSize > 0) { | ||
| tp.setTextSize(mTextSize); | ||
| } | ||
| } | ||
| } |
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