add FlipViewController.setAnimationBitmapFormat

#34

FlipView/Demo/src/com/aphidmobile/flip/demo/FlipComplexLayoutActivity.java

@@ -17,6 +17,7 @@
 package com.aphidmobile.flip.demo;
 
 import android.app.Activity;
+import android.graphics.Bitmap;
 import android.os.Bundle;
 import com.aphidmobile.flip.FlipViewController;
 import com.aphidmobile.flip.demo.adapter.TravelAdapter;
@@ -35,6 +36,9 @@ public void onCreate(Bundle savedInstanceState) {
 		setTitle(R.string.activity_title);
 
 		flipView = new FlipViewController(this);
+
+		//Use RGB_565 to reduce peak memory usage on large screen device 
+		flipView.setAnimationBitmapFormat(Bitmap.Config.RGB_565);
 
 		flipView.setAdapter(new TravelAdapter(this));
 

FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipCards.java

@@ -24,7 +24,7 @@
 import javax.microedition.khronos.opengles.GL10;
 
 public class FlipCards {
-	private static final float ACCELERATION = 1f;	
+	private static final float ACCELERATION = 0.65f;	
 	private static final float MOVEMENT_RATE = 1.5f;
 	private static final int MAX_TIP_ANGLE = 60;
 	private static final int MAX_TOUCH_MOVE_ANGLE = 15;
@@ -103,20 +103,20 @@ public void reloadTexture(int frontIndex, View frontView, int backIndex, View ba
 		synchronized (this) {
 			if (frontView != null) {
 				if (backCards.getView() == frontView) {
-					frontCards.setView(-1, null);
+					frontCards.setView(-1, null, controller.getAnimationBitmapFormat());
 					swapCards();
 				}
 			}
 
 			if (backView != null) {
 				if (frontCards.getView() == backView) {
-					backCards.setView(-1, null);
+					backCards.setView(-1, null, controller.getAnimationBitmapFormat());
 					swapCards();
 				}
 			}
 
-			boolean frontChanged = frontCards.setView(frontIndex, frontView);
-			boolean backChanged = backCards.setView(backIndex, backView);
+			boolean frontChanged = frontCards.setView(frontIndex, frontView, controller.getAnimationBitmapFormat());
+			boolean backChanged = backCards.setView(backIndex, backView, controller.getAnimationBitmapFormat());
 
 			if (AphidLog.ENABLE_DEBUG)
 				AphidLog.d("reloading texture: %s and %s; old views: %s, %s, front changed %s, back changed %s", frontView, backView, frontCards.getView(), backCards.getView(), frontChanged, backChanged);
@@ -278,7 +278,7 @@ public synchronized boolean handleTouchEvent(MotionEvent event, boolean isOnTouc
 							controller.flippedToView(activeIndex, false);
 						} else {
 							swapCards();
-							frontCards.setView(-1, null);
+							frontCards.setView(-1, null, controller.getAnimationBitmapFormat());
 							if (-angle >= MAX_TIP_ANGLE)
 								angle = -MAX_TIP_ANGLE;
 							angle += 180;

FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipRenderer.java

@@ -1,19 +1,5 @@
 package com.aphidmobile.flip;
 
-import static javax.microedition.khronos.opengles.GL10.GL_AMBIENT;
-import static javax.microedition.khronos.opengles.GL10.GL_COLOR_BUFFER_BIT;
-import static javax.microedition.khronos.opengles.GL10.GL_DEPTH_BUFFER_BIT;
-import static javax.microedition.khronos.opengles.GL10.GL_DEPTH_TEST;
-import static javax.microedition.khronos.opengles.GL10.GL_LEQUAL;
-import static javax.microedition.khronos.opengles.GL10.GL_LIGHT0;
-import static javax.microedition.khronos.opengles.GL10.GL_LIGHTING;
-import static javax.microedition.khronos.opengles.GL10.GL_MODELVIEW;
-import static javax.microedition.khronos.opengles.GL10.GL_NICEST;
-import static javax.microedition.khronos.opengles.GL10.GL_PERSPECTIVE_CORRECTION_HINT;
-import static javax.microedition.khronos.opengles.GL10.GL_POSITION;
-import static javax.microedition.khronos.opengles.GL10.GL_PROJECTION;
-import static javax.microedition.khronos.opengles.GL10.GL_SMOOTH;
-
 import javax.microedition.khronos.egl.EGLConfig;
 import javax.microedition.khronos.opengles.GL10;
 
@@ -26,6 +12,8 @@
 
 import java.util.LinkedList;
 
+import static javax.microedition.khronos.opengles.GL10.*;
+
 /*
 Copyright 2012 Aphid Mobile
 

FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipViewController.java

@@ -21,6 +21,7 @@
 import android.content.res.Configuration;
 import android.content.res.TypedArray;
 import android.database.DataSetObserver;
+import android.graphics.Bitmap;
 import android.graphics.PixelFormat;
 import android.opengl.GLSurfaceView;
 import android.os.Handler;
@@ -102,6 +103,8 @@ public void onChanged() {
 	private float maxVelocity;
 
 	private ViewFlipListener onViewFlipListener;
+
+	private Bitmap.Config animationBitmapFormat = Bitmap.Config.ARGB_8888;
 
 	public FlipViewController(Context context) {
 		this(context, true);
@@ -128,6 +131,18 @@ public FlipViewController(Context context, AttributeSet attrs) {
 		init(context, isOrientationVertical(context, attrs));
 	}
 
+	public Bitmap.Config getAnimationBitmapFormat() {
+		return animationBitmapFormat;
+	}
+
+	/**
+	 * Set the bitmap config for the animation, default is ARGB_8888, which provides the best quality with large peak memory consumption.
+	 * @param animationBitmapFormat ALPHA_8 is not supported and will throw exception when binding textures
+	 */
+	public void setAnimationBitmapFormat(Bitmap.Config animationBitmapFormat) {
+		this.animationBitmapFormat = animationBitmapFormat;
+	}
+
 	/**
 	 * Check the attributes for a declared orientation. (Defaults to true)
 	 */
@@ -138,14 +153,15 @@ private boolean isOrientationVertical(Context context, AttributeSet attrs) {
 				R.styleable.FlipViewController,
 				0, 0);
 		try {
-			vertical = a.getInteger(R.styleable.FlipViewController_orientation,
-					0) == 0 ? true : false;
+			vertical = a.getInteger(R.styleable.FlipViewController_orientation, 0) == 0;
 		} finally {
 			a.recycle();
 		}
 		return vertical;
 	}
+
 
+
 	private void init(Context context, boolean orientationVertical) {
 		ViewConfiguration configuration = ViewConfiguration.get(getContext());
 		touchSlop = configuration.getScaledTouchSlop();

FlipView/FlipLibrary/src/com/aphidmobile/flip/GrabIt.java

@@ -24,15 +24,15 @@ public class GrabIt {
 	private GrabIt() {
 	}
 
-	public static Bitmap takeScreenshot(View view) {
+	public static Bitmap takeScreenshot(View view, Bitmap.Config config) {
 		int width = view.getWidth();
 		int height = view.getHeight();
 
 		if (view != null && width > 0 && height > 0) {
-			Bitmap.Config config = Bitmap.Config.ARGB_8888;
 			Bitmap bitmap = Bitmap.createBitmap(width, height, config);
 			Canvas canvas = new Canvas(bitmap);
 			view.draw(canvas);
+
 			//canvas.drawColor(Color.RED, PorterDuff.Mode.DARKEN); //XXX: debug option
 
 			if (AphidLog.ENABLE_DEBUG)

FlipView/FlipLibrary/src/com/aphidmobile/flip/Texture.java

@@ -27,7 +27,7 @@
  */
 public class Texture {
 	private FlipRenderer renderer;
-	
+
 	private int[] id = {0};
 
 	private int width, height;
@@ -58,18 +58,35 @@ public static Texture createTexture(Bitmap bitmap, FlipRenderer renderer, GL10 g
 
 		gl.glGenTextures(1, t.id, 0);
 		gl.glBindTexture(GL_TEXTURE_2D, t.id[0]);
+
 		gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 		gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-		/*
-		 gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-		 gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-		 */
-		gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, null);
-		GLUtils.texSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap);
+		gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+		gl.glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+		switch (bitmap.getConfig()) {
+			case ARGB_8888:
+				gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, null);
+				GLUtils.texSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap);
+				break;
+			case ARGB_4444:
+				gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, null);
+				GLUtils.texSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap);
+				break;
+			case RGB_565:
+				gl.glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, null);
+				GLUtils.texSubImage2D(GL_TEXTURE_2D, 0, 0, 0, bitmap);
+				break;
+			case ALPHA_8:
+			default:
+				throw new RuntimeException("Unrecognized bitmap format for OpenGL texture: " + bitmap.getConfig());
+		}
+
+		FlipRenderer.checkError(gl);
 
 		return t;
 	}
-	
+
 	public void postDestroy() {
 		renderer.postDestroyTexture(this);
 	}

FlipView/FlipLibrary/src/com/aphidmobile/flip/ViewDualCards.java

@@ -54,7 +54,7 @@ public View getView() {
 		return viewRef != null ? viewRef.get() : null;
 	}
 
-	public synchronized boolean setView(int index, View view) {
+	public synchronized boolean setView(int index, View view, Bitmap.Config format) {
 		UI.assertInMainThread();
 
 		if (this.index == index 
@@ -72,7 +72,7 @@ && getView() == view
 		if (view != null) {
 			viewRef = new WeakReference<View>(view);
 			recycleScreenshot();
-			screenshot = GrabIt.takeScreenshot(view);
+			screenshot = GrabIt.takeScreenshot(view, format);
 		} else {
 			recycleScreenshot();
 		}