Implement text baseline attributes for TextView. (e94a75a1) · Commits · e / os / android_frameworks_base

api/current.txt

+8 −0

Original line number	Diff line number	Diff line
		@@ -602,6 +602,7 @@ package android {
		field public static final int fingerprintAuthDrawable = 16844008; // 0x10104e8
		field public static final int finishOnCloseSystemDialogs = 16843431; // 0x10102a7
		field public static final int finishOnTaskLaunch = 16842772; // 0x1010014
		field public static final int firstBaselineToTopHeight = 16844157; // 0x101057d
		field public static final int firstDayOfWeek = 16843581; // 0x101033d
		field public static final int fitsSystemWindows = 16842973; // 0x10100dd
		field public static final int flipInterval = 16843129; // 0x1010179
		@@ -798,6 +799,7 @@ package android {
		field public static final int largeHeap = 16843610; // 0x101035a
		field public static final int largeScreens = 16843398; // 0x1010286
		field public static final int largestWidthLimitDp = 16843622; // 0x1010366
		field public static final int lastBaselineToBottomHeight = 16844158; // 0x101057e
		field public static final int launchMode = 16842781; // 0x101001d
		field public static final int launchTaskBehindSourceAnimation = 16843922; // 0x1010492
		field public static final int launchTaskBehindTargetAnimation = 16843921; // 0x1010491
		@@ -855,6 +857,7 @@ package android {
		field public static final int left = 16843181; // 0x10101ad
		field public static final int letterSpacing = 16843958; // 0x10104b6
		field public static final int level = 16844032; // 0x1010500
		field public static final int lineHeight = 16844159; // 0x101057f
		field public static final int lineSpacingExtra = 16843287; // 0x1010217
		field public static final int lineSpacingMultiplier = 16843288; // 0x1010218
		field public static final int lines = 16843092; // 0x1010154
		@@ -52504,6 +52507,7 @@ package android.widget {
		method public int getExtendedPaddingBottom();
		method public int getExtendedPaddingTop();
		method public android.text.InputFilter[] getFilters();
		method public int getFirstBaselineToTopHeight();
		method public java.lang.String getFontFeatureSettings();
		method public java.lang.String getFontVariationSettings();
		method public boolean getFreezesText();
		@@ -52521,6 +52525,7 @@ package android.widget {
		method public int getInputType();
		method public int getJustificationMode();
		method public final android.text.method.KeyListener getKeyListener();
		method public int getLastBaselineToBottomHeight();
		method public final android.text.Layout getLayout();
		method public float getLetterSpacing();
		method public int getLineBounds(int, android.graphics.Rect);
		@@ -52617,6 +52622,7 @@ package android.widget {
		method public void setExtractedText(android.view.inputmethod.ExtractedText);
		method public void setFallbackLineSpacing(boolean);
		method public void setFilters(android.text.InputFilter[]);
		method public void setFirstBaselineToTopHeight(int);
		method public void setFontFeatureSettings(java.lang.String);
		method public boolean setFontVariationSettings(java.lang.String);
		method protected boolean setFrame(int, int, int, int);
		@@ -52638,7 +52644,9 @@ package android.widget {
		method public void setInputType(int);
		method public void setJustificationMode(int);
		method public void setKeyListener(android.text.method.KeyListener);
		method public void setLastBaselineToBottomHeight(int);
		method public void setLetterSpacing(float);
		method public void setLineHeight(int);
		method public void setLineSpacing(float, float);
		method public void setLines(int);
		method public final void setLinkTextColor(int);

core/java/android/widget/TextView.java

+153 −0

Original line number	Diff line number	Diff line
		@@ -27,8 +27,10 @@ import android.annotation.ColorInt;
		import android.annotation.DrawableRes;
		import android.annotation.FloatRange;
		import android.annotation.IntDef;
		import android.annotation.IntRange;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.annotation.Px;
		import android.annotation.Size;
		import android.annotation.StringRes;
		import android.annotation.StyleRes;
		@@ -52,6 +54,7 @@ import android.graphics.BaseCanvas;
		import android.graphics.Canvas;
		import android.graphics.Insets;
		import android.graphics.Paint;
		import android.graphics.Paint.FontMetricsInt;
		import android.graphics.Path;
		import android.graphics.PorterDuff;
		import android.graphics.Rect;
		@@ -924,6 +927,9 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		int inputType = EditorInfo.TYPE_NULL;
		a = theme.obtainStyledAttributes(
		attrs, com.android.internal.R.styleable.TextView, defStyleAttr, defStyleRes);
		int firstBaselineToTopHeight = -1;
		int lastBaselineToBottomHeight = -1;
		int lineHeight = -1;

		readTextAppearance(context, a, attributes, true /* styleArray */);

		@@ -1249,6 +1255,18 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		case com.android.internal.R.styleable.TextView_justificationMode:
		mJustificationMode = a.getInt(attr, Layout.JUSTIFICATION_MODE_NONE);
		break;

		case com.android.internal.R.styleable.TextView_firstBaselineToTopHeight:
		firstBaselineToTopHeight = a.getDimensionPixelSize(attr, -1);
		break;

		case com.android.internal.R.styleable.TextView_lastBaselineToBottomHeight:
		lastBaselineToBottomHeight = a.getDimensionPixelSize(attr, -1);
		break;

		case com.android.internal.R.styleable.TextView_lineHeight:
		lineHeight = a.getDimensionPixelSize(attr, -1);
		break;
		}
		}

		@@ -1563,6 +1581,16 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		} else {
		mAutoSizeTextType = AUTO_SIZE_TEXT_TYPE_NONE;
		}

		if (firstBaselineToTopHeight >= 0) {
		setFirstBaselineToTopHeight(firstBaselineToTopHeight);
		}
		if (lastBaselineToBottomHeight >= 0) {
		setLastBaselineToBottomHeight(lastBaselineToBottomHeight);
		}
		if (lineHeight >= 0) {
		setLineHeight(lineHeight);
		}
		}

		/**
		@@ -3165,6 +3193,12 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		}
		}

		/**
		* @inheritDoc
		*
		* @see #setFirstBaselineToTopHeight(int)
		* @see #setLastBaselineToBottomHeight(int)
		*/
		@Override
		public void setPadding(int left, int top, int right, int bottom) {
		if (left != mPaddingLeft
		@@ -3179,6 +3213,12 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		invalidate();
		}

		/**
		* @inheritDoc
		*
		* @see #setFirstBaselineToTopHeight(int)
		* @see #setLastBaselineToBottomHeight(int)
		*/
		@Override
		public void setPaddingRelative(int start, int top, int end, int bottom) {
		if (start != getPaddingStart()
		@@ -3193,6 +3233,97 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		invalidate();
		}

		/**
		* Updates the top padding of the TextView so that {@code firstBaselineToTopHeight} is
		* equal to the distance between the firt text baseline and the top of this TextView.
		* <strong>Note</strong> that if {@code FontMetrics.top} or {@code FontMetrics.ascent} was
		* already greater than {@code firstBaselineToTopHeight}, the top padding is not updated.
		*
		* @param firstBaselineToTopHeight distance between first baseline to top of the container
		* in pixels
		*
		* @see #getFirstBaselineToTopHeight()
		* @see #setPadding(int, int, int, int)
		* @see #setPaddingRelative(int, int, int, int)
		*
		* @attr ref android.R.styleable#TextView_firstBaselineToTopHeight
		*/
		public void setFirstBaselineToTopHeight(@Px @IntRange(from = 0) int firstBaselineToTopHeight) {
		Preconditions.checkArgumentNonnegative(firstBaselineToTopHeight);

		final FontMetricsInt fontMetrics = getPaint().getFontMetricsInt();
		final int fontMetricsTop;
		if (getIncludeFontPadding()) {
		fontMetricsTop = fontMetrics.top;
		} else {
		fontMetricsTop = fontMetrics.ascent;
		}

		// TODO: Decide if we want to ignore density ratio (i.e. when the user changes font size
		// in settings). At the moment, we don't.

		if (firstBaselineToTopHeight > Math.abs(fontMetricsTop)) {
		final int paddingTop = firstBaselineToTopHeight - (-fontMetricsTop);
		setPadding(getPaddingLeft(), paddingTop, getPaddingRight(), getPaddingBottom());
		}
		}

		/**
		* Updates the bottom padding of the TextView so that {@code lastBaselineToBottomHeight} is
		* equal to the distance between the last text baseline and the bottom of this TextView.
		* <strong>Note</strong> that if {@code FontMetrics.bottom} or {@code FontMetrics.descent} was
		* already greater than {@code lastBaselineToBottomHeight}, the bottom padding is not updated.
		*
		* @param lastBaselineToBottomHeight distance between last baseline to bottom of the container
		* in pixels
		*
		* @see #getLastBaselineToBottomHeight()
		* @see #setPadding(int, int, int, int)
		* @see #setPaddingRelative(int, int, int, int)
		*
		* @attr ref android.R.styleable#TextView_lastBaselineToBottomHeight
		*/
		public void setLastBaselineToBottomHeight(
		@Px @IntRange(from = 0) int lastBaselineToBottomHeight) {
		Preconditions.checkArgumentNonnegative(lastBaselineToBottomHeight);

		final FontMetricsInt fontMetrics = getPaint().getFontMetricsInt();
		final int fontMetricsBottom;
		if (getIncludeFontPadding()) {
		fontMetricsBottom = fontMetrics.bottom;
		} else {
		fontMetricsBottom = fontMetrics.descent;
		}

		// TODO: Decide if we want to ignore density ratio (i.e. when the user changes font size
		// in settings). At the moment, we don't.

		if (lastBaselineToBottomHeight > Math.abs(fontMetricsBottom)) {
		final int paddingBottom = lastBaselineToBottomHeight - fontMetricsBottom;
		setPadding(getPaddingLeft(), getPaddingTop(), getPaddingRight(), paddingBottom);
		}
		}

		/**
		* Returns the distance between the first text baseline and the top of this TextView.
		*
		* @see #setFirstBaselineToTopHeight(int)
		* @attr ref android.R.styleable#TextView_firstBaselineToTopHeight
		*/
		public int getFirstBaselineToTopHeight() {
		return getPaddingTop() - getPaint().getFontMetricsInt().top;
		}

		/**
		* Returns the distance between the last text baseline and the bottom of this TextView.
		*
		* @see #setLastBaselineToBottomHeight(int)
		* @attr ref android.R.styleable#TextView_lastBaselineToBottomHeight
		*/
		public int getLastBaselineToBottomHeight() {
		return getPaddingBottom() + getPaint().getFontMetricsInt().bottom;
		}

		/**
		* Gets the autolink mask of the text. See {@link
		* android.text.util.Linkify#ALL Linkify.ALL} and peers for
		@@ -4973,6 +5104,28 @@ public class TextView extends View implements ViewTreeObserver.OnPreDrawListener
		return mSpacingAdd;
		}

		/**
		* Sets an explicit line height for this TextView. This is equivalent to the vertical distance
		* between subsequent baselines in the TextView.
		*
		* @param lineHeight the line height in pixels
		*
		* @see #setLineSpacing(float, float)
		* @see #getLineSpacing()
		*
		* @attr ref android.R.styleable#TextView_lineHeight
		*/
		public void setLineHeight(@Px @IntRange(from = 0) int lineHeight) {
		Preconditions.checkArgumentNonnegative(lineHeight);

		final int fontHeight = getPaint().getFontMetricsInt(null);
		// Make sure we don't setLineSpacing if it's not needed to avoid unnecessary redraw.
		if (lineHeight != fontHeight) {
		// Set lineSpacingExtra by the difference of lineSpacing with lineHeight
		setLineSpacing(lineHeight - fontHeight, 1f);
		}
		}

		/**
		* Convenience method to append the specified text to the TextView's
		* display buffer, upgrading it to {@link android.widget.TextView.BufferType#EDITABLE}

core/res/res/values/attrs.xml

+9 −0

Original line number	Diff line number	Diff line
		@@ -4739,6 +4739,15 @@
		<!-- Extra spacing between lines of text, as a multiplier. The value will not be applied
		for the last line of text.-->
		<attr name="lineSpacingMultiplier" format="float" />
		<!-- Explicit height between lines of text. If set, this will override the values set
		for lineSpacingExtra and lineSpacingMultiplier. -->
		<attr name="lineHeight" format="dimension" />
		<!-- Distance from the top of the TextView to the first text baseline. If set, this
		overrides the value set for paddingTop. -->
		<attr name="firstBaselineToTopHeight" format="dimension" />
		<!-- Distance from the bottom of the TextView to the last text baseline. If set, this
		overrides the value set for paddingBottom. -->
		<attr name="lastBaselineToBottomHeight" format="dimension" />
		<!-- The number of times to repeat the marquee animation. Only applied if the
		TextView has marquee enabled. -->
		<attr name="marqueeRepeatLimit" format="integer">

core/res/res/values/public.xml

+3 −0

Original line number	Diff line number	Diff line
		@@ -2862,6 +2862,9 @@
		<public name="appComponentFactory" />
		<public name="fallbackLineSpacing" />
		<public name="accessibilityPaneTitle" />
		<public name="firstBaselineToTopHeight" />
		<public name="lastBaselineToBottomHeight" />
		<public name="lineHeight" />
		</public-group>

		<public-group type="style" first-id="0x010302e0">