Fix a display issue when flipping backward on the first page

Issue #52
openaphid · Apr 28, 2013 · 8f230f7 · 8f230f7
1 parent 2dca94e
commit 8f230f7
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Showing 4 changed files with 17 additions and 0 deletions.
diff --git a/FlipView/Demo/APK/Aphid-FlipView-Demo.apk b/FlipView/Demo/APK/Aphid-FlipView-Demo.apk
diff --git a/FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipCards.java b/FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipCards.java
@@ -54,6 +54,8 @@ public class FlipCards {
   private FlipViewController controller;
 
   private volatile boolean visible = false;
+
+  private volatile boolean firstDrawFinished = false;
 
   private int maxIndex = 0;
 
@@ -75,6 +77,14 @@ public void setVisible(boolean visible) {
     this.visible = visible;
   }
 
+  public boolean isFirstDrawFinished() {
+    return firstDrawFinished;
+  }
+
+  public void setFirstDrawFinished(boolean firstDrawFinished) {
+    this.firstDrawFinished = firstDrawFinished;
+  }
+
   boolean refreshPageView(View view) {
     boolean match = false;
     if (frontCards.getView() == view) {
@@ -252,6 +262,8 @@ public synchronized void draw(FlipRenderer renderer, GL10 gl) {
         backCards.getBottomCard().draw(gl);
       }
     }
+
+    firstDrawFinished = true;
   }
 
   public void invalidateTexture() {

diff --git a/FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipRenderer.java b/FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipRenderer.java
@@ -116,6 +116,10 @@ public void onSurfaceChanged(GL10 gl, int width, int height) {
 
   @Override
   public void onDrawFrame(GL10 gl) {
+    if (cards.isVisible() && cards.isFirstDrawFinished())
+      gl.glClearColor(1f, 1f, 1f, 1f);
+    else
+      gl.glClearColor(0f, 0f, 0f, 0f);
     gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
     synchronized (postDestroyTextures) {

diff --git a/FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipViewController.java b/FlipView/FlipLibrary/src/com/aphidmobile/flip/FlipViewController.java
@@ -556,6 +556,7 @@ void showFlipAnimation() {
       inFlipAnimation = true;
 
       cards.setVisible(true);
+      cards.setFirstDrawFinished(false);
       surfaceView.requestRender();
     }
   }