From 302a9df1d50373c82923bb84ff665dfce584fb22 Mon Sep 17 00:00:00 2001
From: Romain Guy <romainguy@google.com>
Date: Tue, 16 Aug 2011 13:55:02 -0700
Subject: Add an API to set the transform on a TextureView's surface texture.
 Bug #5156689

Change-Id: I635a625885c9b832a60d44ece0de7613ceb84109
---
 core/java/android/view/TextureView.java | 53 +++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

(limited to 'core/java/android/view/TextureView.java')

diff --git a/core/java/android/view/TextureView.java b/core/java/android/view/TextureView.java
index 53a6bcba98c8..b72222ee9f99 100644
--- a/core/java/android/view/TextureView.java
+++ b/core/java/android/view/TextureView.java
@@ -19,6 +19,7 @@ package android.view;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
+import android.graphics.Matrix;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.graphics.SurfaceTexture;
@@ -104,6 +105,9 @@ public class TextureView extends View {
 
     private boolean mOpaque = true;
 
+    private final Matrix mMatrix = new Matrix();
+    private boolean mMatrixChanged;
+
     private final Object[] mLock = new Object[0];
     private boolean mUpdateLayer;
 
@@ -312,6 +316,11 @@ public class TextureView extends View {
 
         applyUpdate();
 
+        if (mMatrixChanged) {
+            mLayer.setTransform(mMatrix);
+            mMatrixChanged = false;
+        }
+
         return mLayer;
     }
 
@@ -357,6 +366,50 @@ public class TextureView extends View {
         }
     }
 
+    /**
+     * <p>Sets the transform to associate with this texture view.
+     * The specified transform applies to the underlying surface
+     * texture and does not affect the size or position of the view
+     * itself, only of its content.</p>
+     * 
+     * <p>Some transforms might prevent the content from drawing
+     * all the pixels contained within this view's bounds. In such
+     * situations, make sure this texture view is not marked opaque.</p>
+     * 
+     * @param transform The transform to apply to the content of
+     *        this view.
+     * 
+     * @see #getTransform(android.graphics.Matrix) 
+     * @see #isOpaque() 
+     * @see #setOpaque(boolean) 
+     */
+    public void setTransform(Matrix transform) {
+        mMatrix.set(transform);
+        mMatrixChanged = true;
+        invalidate();
+    }
+
+    /**
+     * Returns the transform associated with this texture view.
+     * 
+     * @param transform The {@link Matrix} in which to copy the current
+     *        transform. Can be null.
+     * 
+     * @return The specified matrix if not null or a new {@link Matrix}
+     *         instance otherwise.
+     *         
+     * @see #setTransform(android.graphics.Matrix) 
+     */
+    public Matrix getTransform(Matrix transform) {
+        if (transform == null) {
+            transform = new Matrix();
+        }
+
+        transform.set(mMatrix);
+
+        return transform;
+    }
+
     /**
      * <p>Returns a {@link android.graphics.Bitmap} representation of the content
      * of the associated surface texture. If the surface texture is not available,
-- 
cgit v1.2.3