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Commit 366a8405 authored by Romain Guy's avatar Romain Guy
Browse files

Expose several useful Bitmap APIs. 

Bug #3408073

Bitmap.setHasAlpha() in particular is very useful for applications that use
ARGB_8888 bitmaps but want/need to benefit from an extra speed boost.

Change-Id: I73d081b7e43bd725baffd1a9892c72d8729816f7
parent ab3e04c0

api/current.xml

+37 −0
Original line number Diff line number Diff line
@@ -76419,6 +76419,17 @@ 
 visibility="public"

>

</method>

<method name="getGenerationId"

 return="int"

 abstract="false"

 native="false"

 synchronized="false"

 static="false"

 final="false"

 deprecated="not deprecated"

 visibility="public"

>

</method>

<method name="getHeight"

 return="int"

 abstract="false"
@@ -76636,6 +76647,19 @@ 
 visibility="public"

>

</method>

<method name="sameAs"

 return="boolean"

 abstract="false"

 native="false"

 synchronized="false"

 static="false"

 final="false"

 deprecated="not deprecated"

 visibility="public"

>

<parameter name="other" type="android.graphics.Bitmap">

</parameter>

</method>

<method name="setDensity"

 return="void"

 abstract="false"
@@ -76649,6 +76673,19 @@ 
<parameter name="density" type="int">

</parameter>

</method>

<method name="setHasAlpha"

 return="void"

 abstract="false"

 native="false"

 synchronized="false"

 static="false"

 final="false"

 deprecated="not deprecated"

 visibility="public"

>

<parameter name="hasAlpha" type="boolean">

</parameter>

</method>

<method name="setPixel"

 return="void"

 abstract="false"

graphics/java/android/graphics/Bitmap.java

+11 −13
Original line number Diff line number Diff line
@@ -200,8 +200,6 @@ public final class Bitmap implements Parcelable { 
     * check if a bitmap has changed.

     * 

     * @return The current generation ID for this bitmap.

     * 

     * @hide

     */

    public int getGenerationId() {

        return nativeGenerationId(mNativeBitmap);
@@ -790,14 +788,12 @@ public final class Bitmap implements Parcelable { 
    /**

     * Tell the bitmap if all of the pixels are known to be opaque (false)

     * or if some of the pixels may contain non-opaque alpha values (true).

     * Note, for some configs (e.g. RGB_565) this call is ignore, since it does

     * not support per-pixel alpha values.

     * Note, for some configs (e.g. RGB_565) this call is ignored, since it

     * does not support per-pixel alpha values.

     *

     * This is meant as a drawing hint, as in some cases a bitmap that is known

     * to be opaque can take a faster drawing case than one that may have

     * non-opaque per-pixel alpha values.

     *

     * @hide

     */

    public void setHasAlpha(boolean hasAlpha) {

        nativeSetHasAlpha(mNativeBitmap, hasAlpha);
@@ -1066,13 +1062,9 @@ public final class Bitmap implements Parcelable { 
     *  Given another bitmap, return true if it has the same dimensions, config,

     *  and pixel data as this bitmap. If any of those differ, return false.

     *  If other is null, return false.

     *

     * @hide (just needed internally right now)

     */

    public boolean sameAs(Bitmap other) {

        return this == other ||

              (other != null &&

               nativeSameAs(mNativeBitmap, other.mNativeBitmap));

        return this == other || (other != null && nativeSameAs(mNativeBitmap, other.mNativeBitmap));

    }



    /**
@@ -1099,9 +1091,15 @@ public final class Bitmap implements Parcelable { 


        @Override

        public void finalize() {

            try {

                super.finalize();

            } catch (Throwable t) {

                // Ignore

            } finally {

                nativeDestructor(mNativeBitmap);

            }

        }

    }



    //////////// native methods