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/*
* Copyright (C) 2010 The Android Open Source 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 com.android.gallery3d.ui;
import com.android.gallery3d.app.AbstractGalleryActivity;
import com.android.gallery3d.app.AlbumDataLoader;
import com.android.gallery3d.data.MediaObject;
import com.android.gallery3d.data.Path;
import com.android.gallery3d.glrenderer.ColorTexture;
import com.android.gallery3d.glrenderer.FadeInTexture;
import com.android.gallery3d.glrenderer.GLCanvas;
import com.android.gallery3d.glrenderer.Texture;
import com.android.gallery3d.glrenderer.TiledTexture;
public class AlbumSlotRenderer extends AbstractSlotRenderer {
@SuppressWarnings("unused")
private static final String TAG = "AlbumView";
public interface SlotFilter {
public boolean acceptSlot(int index);
}
private final int mPlaceholderColor;
private static final int CACHE_SIZE = 96;
private AlbumSlidingWindow mDataWindow;
private final AbstractGalleryActivity mActivity;
private final ColorTexture mWaitLoadingTexture;
private final SlotView mSlotView;
private final SelectionManager mSelectionManager;
private int mPressedIndex = -1;
private boolean mAnimatePressedUp;
private Path mHighlightItemPath = null;
private boolean mInSelectionMode;
private SlotFilter mSlotFilter;
public AlbumSlotRenderer(AbstractGalleryActivity activity, SlotView slotView,
SelectionManager selectionManager, int placeholderColor) {
super(activity);
mActivity = activity;
mSlotView = slotView;
mSelectionManager = selectionManager;
mPlaceholderColor = placeholderColor;
mWaitLoadingTexture = new ColorTexture(mPlaceholderColor);
mWaitLoadingTexture.setSize(1, 1);
}
public void setPressedIndex(int index) {
if (mPressedIndex == index) return;
mPressedIndex = index;
mSlotView.invalidate();
}
public void setPressedUp() {
if (mPressedIndex == -1) return;
mAnimatePressedUp = true;
mSlotView.invalidate();
}
public void setHighlightItemPath(Path path) {
if (mHighlightItemPath == path) return;
mHighlightItemPath = path;
mSlotView.invalidate();
}
public void setModel(AlbumDataLoader model) {
if (mDataWindow != null) {
mDataWindow.setListener(null);
mSlotView.setSlotCount(0);
mDataWindow = null;
}
if (model != null) {
mDataWindow = new AlbumSlidingWindow(mActivity, model, CACHE_SIZE);
mDataWindow.setListener(new MyDataModelListener());
mSlotView.setSlotCount(model.size());
}
}
private static Texture checkTexture(Texture texture) {
return (texture instanceof TiledTexture)
&& !((TiledTexture) texture).isReady()
? null
: texture;
}
@Override
public int renderSlot(GLCanvas canvas, int index, int pass, int width, int height) {
if (mSlotFilter != null && !mSlotFilter.acceptSlot(index)) return 0;
AlbumSlidingWindow.AlbumEntry entry = mDataWindow.get(index);
int renderRequestFlags = 0;
Texture content = checkTexture(entry.content);
if (content == null) {
content = mWaitLoadingTexture;
entry.isWaitDisplayed = true;
} else if (entry.isWaitDisplayed) {
entry.isWaitDisplayed = false;
content = new FadeInTexture(mPlaceholderColor, entry.bitmapTexture);
entry.content = content;
}
drawContent(canvas, content, width, height, entry.rotation);
if ((content instanceof FadeInTexture) &&
((FadeInTexture) content).isAnimating()) {
renderRequestFlags |= SlotView.RENDER_MORE_FRAME;
}
if (entry.mediaType == MediaObject.MEDIA_TYPE_VIDEO) {
drawVideoOverlay(canvas, width, height);
}
if (entry.isPanorama) {
drawPanoramaIcon(canvas, width, height);
}
renderRequestFlags |= renderOverlay(canvas, index, entry, width, height);
return renderRequestFlags;
}
private int renderOverlay(GLCanvas canvas, int index,
AlbumSlidingWindow.AlbumEntry entry, int width, int height) {
int renderRequestFlags = 0;
if (mPressedIndex == index) {
if (mAnimatePressedUp) {
drawPressedUpFrame(canvas, width, height);
renderRequestFlags |= SlotView.RENDER_MORE_FRAME;
if (isPressedUpFrameFinished()) {
mAnimatePressedUp = false;
mPressedIndex = -1;
}
} else {
drawPressedFrame(canvas, width, height);
}
} else if ((entry.path != null) && (mHighlightItemPath == entry.path)) {
drawSelectedFrame(canvas, width, height);
} else if (mInSelectionMode && mSelectionManager.isItemSelected(entry.path)) {
drawSelectedFrame(canvas, width, height);
}
return renderRequestFlags;
}
private class MyDataModelListener implements AlbumSlidingWindow.Listener {
@Override
public void onContentChanged() {
mSlotView.invalidate();
}
@Override
public void onSizeChanged(int size) {
mSlotView.setSlotCount(size);
}
}
public void resume() {
mDataWindow.resume();
}
public void pause() {
mDataWindow.pause();
}
@Override
public void prepareDrawing() {
mInSelectionMode = mSelectionManager.inSelectionMode();
}
@Override
public void onVisibleRangeChanged(int visibleStart, int visibleEnd) {
if (mDataWindow != null) {
mDataWindow.setActiveWindow(visibleStart, visibleEnd);
}
}
@Override
public void onSlotSizeChanged(int width, int height) {
// Do nothing
}
public void setSlotFilter(SlotFilter slotFilter) {
mSlotFilter = slotFilter;
}
}
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