1 files changed, 171 insertions, 0 deletions
diff --git a/src/org/cyanogenmod/wallpapers/photophase/transitions/NullTransition.java b/src/org/cyanogenmod/wallpapers/photophase/transitions/NullTransition.java
new file mode 100644
index 0000000..24344d6
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+++ b/src/org/cyanogenmod/wallpapers/photophase/transitions/NullTransition.java
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2013 The CyanogenMod Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.cyanogenmod.wallpapers.photophase.transitions;
+
+import android.content.Context;
+import android.opengl.GLES20;
+import android.opengl.GLException;
+
+import org.cyanogenmod.wallpapers.photophase.utils.GLESUtil;
+import org.cyanogenmod.wallpapers.photophase.PhotoFrame;
+import org.cyanogenmod.wallpapers.photophase.R;
+import org.cyanogenmod.wallpapers.photophase.TextureManager;
+import org.cyanogenmod.wallpapers.photophase.transitions.Transitions.TRANSITIONS;
+
+import java.nio.FloatBuffer;
+/**
+ * A special transition that does nothing other than draw the {@link PhotoFrame}
+ * on the screen continually. No transition is done.
+ */
+public class NullTransition extends Transition {
+
+    private static final int[] VERTEX_SHADER = {R.raw.default_vertex_shader};
+    private static final int[] FRAGMENT_SHADER = {R.raw.default_fragment_shader};
+
+    /**
+     * Constructor of <code>NullTransition</code>
+     *
+     * @param ctx The current context
+     * @param tm The texture manager
+     */
+    public NullTransition(Context ctx, TextureManager tm) {
+        super(ctx, tm, VERTEX_SHADER, FRAGMENT_SHADER);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void select(PhotoFrame target) {
+        super.select(target);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public TRANSITIONS getType() {
+        return TRANSITIONS.NO_TRANSITION;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean hasTransitionTarget() {
+        return false;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isRunning() {
+        return mTarget == null || !mTarget.isLoaded();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public boolean isSelectable(PhotoFrame frame) {
+        return true;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void reset() {
+        // Nothing to do
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public void apply(float[] matrix) throws GLException {
+        // Check internal vars
+        if (mTarget == null ||
+            mTarget.getPositionBuffer() == null ||
+            mTarget.getTextureBuffer() == null) {
+            return;
+        }
+
+        // Draw the current target
+        draw(mTarget, matrix);
+    }
+
+    /**
+     * Method that draws the picture texture
+     *
+     * @param target The target to draw
+     * @param matrix The model-view-projection matrix
+     */
+    protected void draw(PhotoFrame target, float[] matrix) {
+        // Bind default FBO
+        GLES20.glBindFramebuffer(GLES20.GL_FRAMEBUFFER, 0);
+        GLESUtil.glesCheckError("glBindFramebuffer");
+
+        // Use our shader program
+        useProgram(0);
+
+        // Disable blending
+        GLES20.glDisable(GLES20.GL_BLEND);
+        GLESUtil.glesCheckError("glDisable");
+
+        // Apply the projection and view transformation
+        GLES20.glUniformMatrix4fv(mMVPMatrixHandlers[0], 1, false, matrix, 0);
+        GLESUtil.glesCheckError("glUniformMatrix4fv");
+
+        // Texture
+        FloatBuffer textureBuffer = target.getTextureBuffer();
+        textureBuffer.position(0);
+        GLES20.glVertexAttribPointer(mTextureCoordHandlers[0], 2, GLES20.GL_FLOAT, false, 0, textureBuffer);
+        GLESUtil.glesCheckError("glVertexAttribPointer");
+        GLES20.glEnableVertexAttribArray(mTextureCoordHandlers[0]);
+        GLESUtil.glesCheckError("glEnableVertexAttribArray");
+
+        // Position
+        FloatBuffer positionBuffer = target.getPositionBuffer();
+        positionBuffer.position(0);
+        GLES20.glVertexAttribPointer(mPositionHandlers[0], 2, GLES20.GL_FLOAT, false, 0, positionBuffer);
+        GLESUtil.glesCheckError("glVertexAttribPointer");
+        GLES20.glEnableVertexAttribArray(mPositionHandlers[0]);
+        GLESUtil.glesCheckError("glEnableVertexAttribArray");
+
+        // Set the input texture
+        int textureHandle = target.getTextureHandle();
+        GLES20.glActiveTexture(GLES20.GL_TEXTURE0);
+        GLESUtil.glesCheckError("glActiveTexture");
+        GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, textureHandle);
+        GLESUtil.glesCheckError("glBindTexture");
+        GLES20.glUniform1i(mTextureHandlers[0], 0);
+        GLESUtil.glesCheckError("glUniform1i");
+
+        // Draw
+        GLES20.glDrawArrays(GLES20.GL_TRIANGLE_STRIP, 0, 4);
+        GLESUtil.glesCheckError("glDrawElements");
+
+        // Disable attributes
+        GLES20.glDisableVertexAttribArray(mPositionHandlers[0]);
+        GLESUtil.glesCheckError("glDisableVertexAttribArray");
+        GLES20.glDisableVertexAttribArray(mTextureCoordHandlers[0]);
+        GLESUtil.glesCheckError("glDisableVertexAttribArray");
+    }
+
+}