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SubtitleView - New method setApplyEmbeddedFontSizes

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When option is set to false, SubtitlePainter strips all absolute
and relative font size spans from the cue text.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=152484724
This commit is contained in:
tonihei 2017-04-07 03:38:00 -07:00 committed by Oliver Woodman
parent 156bc52c8f
commit ac0a4353da
2 changed files with 54 additions and 13 deletions
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41
library/ui/src/main/java/com/google/android/exoplayer2/ui/SubtitlePainter.java
View File

@ -27,9 +27,12 @@ import android.graphics.Paint.Style;
import android.graphics.Rect;
import android.graphics.RectF;
import android.text.Layout.Alignment;
import android.text.SpannableStringBuilder;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.text.TextUtils;
import android.text.style.AbsoluteSizeSpan;
import android.text.style.RelativeSizeSpan;
import android.util.DisplayMetrics;
import android.util.Log;
import com.google.android.exoplayer2.text.CaptionStyleCompat;
@ -79,6 +82,7 @@ import com.google.android.exoplayer2.util.Util;
private float cueSize;
private float cueBitmapHeight;
private boolean applyEmbeddedStyles;
private boolean applyEmbeddedFontSizes;
private int foregroundColor;
private int backgroundColor;
private int windowColor;
@ -133,6 +137,8 @@ import com.google.android.exoplayer2.util.Util;
*
* @param cue The cue to draw.
* @param applyEmbeddedStyles Whether styling embedded within the cue should be applied.
* @param applyEmbeddedFontSizes If {@code applyEmbeddedStyles} is true, defines whether font
* sizes embedded within the cue should be applied. Otherwise, it is ignored.
* @param style The style to use when drawing the cue text.
* @param textSizePx The text size to use when drawing the cue text, in pixels.
* @param bottomPaddingFraction The bottom padding fraction to apply when {@link Cue#line} is
@ -143,24 +149,37 @@ import com.google.android.exoplayer2.util.Util;
* @param cueBoxRight The right position of the enclosing cue box.
* @param cueBoxBottom The bottom position of the enclosing cue box.
*/
public void draw(Cue cue, boolean applyEmbeddedStyles, CaptionStyleCompat style, float textSizePx,
float bottomPaddingFraction, Canvas canvas, int cueBoxLeft, int cueBoxTop, int cueBoxRight,
int cueBoxBottom) {
public void draw(Cue cue, boolean applyEmbeddedStyles, boolean applyEmbeddedFontSizes,
CaptionStyleCompat style, float textSizePx, float bottomPaddingFraction, Canvas canvas,
int cueBoxLeft, int cueBoxTop, int cueBoxRight, int cueBoxBottom) {
boolean isTextCue = cue.bitmap == null;
CharSequence cueText = null;
Bitmap cueBitmap = null;
int windowColor = Color.BLACK;
if (isTextCue) {
cueText = cue.text;
if (TextUtils.isEmpty(cueText)) {
if (TextUtils.isEmpty(cue.text)) {
// Nothing to draw.
return;
}
windowColor = cue.windowColorSet ? cue.windowColor : style.windowColor;
if (!applyEmbeddedStyles) {
// Strip out any embedded styling.
cueText = cueText.toString();
windowColor = style.windowColor;
windowColor = (cue.windowColorSet && applyEmbeddedStyles)
? cue.windowColor : style.windowColor;
// Remove embedded styling or font size if requested.
if (applyEmbeddedFontSizes && applyEmbeddedStyles) {
cueText = cue.text;
} else if (!applyEmbeddedStyles) {
cueText = cue.text.toString(); // Equivalent to erasing all spans.
} else {
SpannableStringBuilder newCueText = new SpannableStringBuilder(cue.text);
int cueLength = newCueText.length();
AbsoluteSizeSpan[] absSpans = newCueText.getSpans(0, cueLength, AbsoluteSizeSpan.class);
RelativeSizeSpan[] relSpans = newCueText.getSpans(0, cueLength, RelativeSizeSpan.class);
for (AbsoluteSizeSpan absSpan : absSpans) {
newCueText.removeSpan(absSpan);
}
for (RelativeSizeSpan relSpan : relSpans) {
newCueText.removeSpan(relSpan);
}
cueText = newCueText;
}
} else {
cueBitmap = cue.bitmap;
@ -176,6 +195,7 @@ import com.google.android.exoplayer2.util.Util;
&& this.cueSize == cue.size
&& this.cueBitmapHeight == cue.bitmapHeight
&& this.applyEmbeddedStyles == applyEmbeddedStyles
&& this.applyEmbeddedFontSizes == applyEmbeddedFontSizes
&& this.foregroundColor == style.foregroundColor
&& this.backgroundColor == style.backgroundColor
&& this.windowColor == windowColor
@ -204,6 +224,7 @@ import com.google.android.exoplayer2.util.Util;
this.cueSize = cue.size;
this.cueBitmapHeight = cue.bitmapHeight;
this.applyEmbeddedStyles = applyEmbeddedStyles;
this.applyEmbeddedFontSizes = applyEmbeddedFontSizes;
this.foregroundColor = style.foregroundColor;
this.backgroundColor = style.backgroundColor;
this.windowColor = windowColor;

26
library/ui/src/main/java/com/google/android/exoplayer2/ui/SubtitleView.java
View File

@ -60,6 +60,7 @@ public final class SubtitleView extends View implements TextRenderer.Output {
private int textSizeType;
private float textSize;
private boolean applyEmbeddedStyles;
private boolean applyEmbeddedFontSizes;
private CaptionStyleCompat style;
private float bottomPaddingFraction;
@ -73,6 +74,7 @@ public final class SubtitleView extends View implements TextRenderer.Output {
textSizeType = FRACTIONAL;
textSize = DEFAULT_TEXT_SIZE_FRACTION;
applyEmbeddedStyles = true;
applyEmbeddedFontSizes = true;
style = CaptionStyleCompat.DEFAULT;
bottomPaddingFraction = DEFAULT_BOTTOM_PADDING_FRACTION;
}
@ -166,14 +168,32 @@ public final class SubtitleView extends View implements TextRenderer.Output {
/**
* Sets whether styling embedded within the cues should be applied. Enabled by default.
* Overrides any setting made with {@link SubtitleView#setApplyEmbeddedFontSizes}.
*
* @param applyEmbeddedStyles Whether styling embedded within the cues should be applied.
*/
public void setApplyEmbeddedStyles(boolean applyEmbeddedStyles) {
if (this.applyEmbeddedStyles == applyEmbeddedStyles) {
if (this.applyEmbeddedStyles == applyEmbeddedStyles
&& this.applyEmbeddedFontSizes == applyEmbeddedStyles) {
return;
}
this.applyEmbeddedStyles = applyEmbeddedStyles;
this.applyEmbeddedFontSizes = applyEmbeddedStyles;
// Invalidate to trigger drawing.
invalidate();
}
/**
* Sets whether font sizes embedded within the cues should be applied. Enabled by default.
* Only takes effect if {@link SubtitleView#setApplyEmbeddedStyles} is set to true.
*
* @param applyEmbeddedFontSizes Whether font sizes embedded within the cues should be applied.
*/
public void setApplyEmbeddedFontSizes(boolean applyEmbeddedFontSizes) {
if (this.applyEmbeddedFontSizes == applyEmbeddedFontSizes) {
return;
}
this.applyEmbeddedFontSizes = applyEmbeddedFontSizes;
// Invalidate to trigger drawing.
invalidate();
}
@ -243,8 +263,8 @@ public final class SubtitleView extends View implements TextRenderer.Output {
}
for (int i = 0; i < cueCount; i++) {
painters.get(i).draw(cues.get(i), applyEmbeddedStyles, style, textSizePx,
bottomPaddingFraction, canvas, left, top, right, bottom);
painters.get(i).draw(cues.get(i), applyEmbeddedStyles, applyEmbeddedFontSizes, style,
textSizePx, bottomPaddingFraction, canvas, left, top, right, bottom);
}
}