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Merge "Add comments regarding FILTER_BITMAP_FLAG" into sc-dev

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Leon Scroggins
2021-02-26 18:39:51 +00:00
committed by Android (Google) Code Review
parent 42b7f2b3e5 2a420c3ac5
commit 9d65c12580
1 changed files with 22 additions and 0 deletions
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22
graphics/java/android/graphics/Paint.java
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@@ -153,6 +153,13 @@ public class Paint {
* resource bitmaps often are) the filtering will already have been
* done.</p>
*
* <p>On devices running {@link Build.VERSION_CODES#O} and below, hardware
* accelerated drawing always uses bilinear sampling on scaled bitmaps,
* regardless of this flag. On devices running {@link Build.VERSION_CODES#Q}
* and above, this flag defaults to being set on a new {@code Paint}. It can
* be cleared with {@link #setFlags} or {@link #setFilterBitmap}.</p>
*
* @see #Paint()
* @see #Paint(int)
* @see #setFlags(int)
*/
@@ -558,6 +565,12 @@ public class Paint {
/**
* Create a new paint with default settings.
*
* <p>On devices running {@link Build.VERSION_CODES#O} and below, hardware
* accelerated drawing always acts as if {@link #FILTER_BITMAP_FLAG} is set.
* On devices running {@link Build.VERSION_CODES#Q} and above,
* {@code FILTER_BITMAP_FLAG} is set by this constructor, and it can be
* cleared with {@link #setFlags} or {@link #setFilterBitmap}.</p>
*/
public Paint() {
this(0);
@@ -567,6 +580,13 @@ public class Paint {
* Create a new paint with the specified flags. Use setFlags() to change
* these after the paint is created.
*
* <p>On devices running {@link Build.VERSION_CODES#O} and below, hardware
* accelerated drawing always acts as if {@link #FILTER_BITMAP_FLAG} is set.
* On devices running {@link Build.VERSION_CODES#Q} and above,
* {@code FILTER_BITMAP_FLAG} is always set by this constructor, regardless
* of the value of {@code flags}. It can be cleared with {@link #setFlags} or
* {@link #setFilterBitmap}.</p>
*
* @param flags initial flag bits, as if they were passed via setFlags().
*/
public Paint(int flags) {
@@ -991,6 +1011,7 @@ public class Paint {
* device pixels. That is dependent on dithering and xfermodes.
*
* @see #setFilterBitmap(boolean) setFilterBitmap()
* @see #FILTER_BITMAP_FLAG
*/
public final boolean isFilterBitmap() {
return (getFlags() & FILTER_BITMAP_FLAG) != 0;
@@ -1004,6 +1025,7 @@ public class Paint {
*
* @param filter true to set the FILTER_BITMAP_FLAG bit in the paint's
* flags, false to clear it.
* @see #FILTER_BITMAP_FLAG
*/
public void setFilterBitmap(boolean filter) {
nSetFilterBitmap(mNativePaint, filter);