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/*
* Copyright (C) 2012 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.ide.eclipse.gltrace.views.detail;
import com.android.ide.eclipse.gltrace.state.GLCompositeProperty;
import com.android.ide.eclipse.gltrace.state.GLSparseArrayProperty;
import com.android.ide.eclipse.gltrace.state.GLStateType;
import com.android.ide.eclipse.gltrace.state.GLStringProperty;
import com.android.ide.eclipse.gltrace.state.IGLProperty;
import com.android.ide.eclipse.gltrace.views.FitToCanvasAction;
import com.android.ide.eclipse.gltrace.views.SaveImageAction;
import com.android.ide.eclipse.gltrace.widgets.ImageCanvas;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.IContributionItem;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
import java.util.Arrays;
import java.util.List;
public class TextureImageDetailsProvider implements IStateDetailProvider {
private ImageCanvas mImageCanvas;
private FitToCanvasAction mFitToCanvasAction;
private SaveImageAction mSaveImageAction;
private List<IContributionItem> mToolBarItems;
@Override
public boolean isApplicable(IGLProperty state) {
return getTextureImageProperty(state) != null;
}
@Override
public void createControl(Composite parent) {
mImageCanvas = new ImageCanvas(parent);
mImageCanvas.setFitToCanvas(false);
mFitToCanvasAction = new FitToCanvasAction(false, mImageCanvas);
mSaveImageAction = new SaveImageAction(mImageCanvas);
mToolBarItems = Arrays.asList(
(IContributionItem) new ActionContributionItem(mFitToCanvasAction),
(IContributionItem) new ActionContributionItem(mSaveImageAction));
}
@Override
public void disposeControl() {
mImageCanvas.dispose();
mImageCanvas = null;
}
@Override
public Control getControl() {
return mImageCanvas;
}
@Override
public void updateControl(IGLProperty state) {
IGLProperty imageProperty = getTextureImageProperty(state);
if (imageProperty == null) {
return;
}
String texturePath = ((GLStringProperty) imageProperty).getStringValue();
if (texturePath != null) {
mImageCanvas.setImage(new Image(Display.getDefault(), texturePath));
mImageCanvas.setFitToCanvas(false);
return;
}
}
/**
* Get the {@link GLStateType#TEXTURE_IMAGE} property given a node in
* the state hierarchy.
* @param state any node in the GL state hierarchy
* @return The {@link GLStateType#TEXTURE_IMAGE} property if a unique instance
* of it can be accessed from the given node. A unique instance can be
* accessed if the given node is either the requested node itself, or
* its parent or sibling. In cases where a unique instance cannot be
* accessed, but one of the texture mipmap levels can be accessed, then
* return the first texture mipmap level. This happens if the selected
* state is a child of {@link GLStateType#PER_TEXTURE_STATE}. Returns
* null otherwise.
*/
private IGLProperty getTextureImageProperty(IGLProperty state) {
if (state.getType() == GLStateType.TEXTURE_IMAGE) {
// given node is the requested node
return state;
}
IGLProperty img = getImageFromPerTextureLevelState(state);
if (img != null) {
return img;
}
return getFirstMipmapImage(state);
}
/**
* Returns the {@link GLStateType#TEXTURE_IMAGE} if the provided state is either
* {@link GLStateType#PER_TEXTURE_LEVEL_STATE} or one of its children. Returns null otherwise.
*/
private IGLProperty getImageFromPerTextureLevelState(IGLProperty state) {
if (state != null && state.getType() != GLStateType.PER_TEXTURE_LEVEL_STATE) {
state = state.getParent();
}
if (state == null || state.getType() != GLStateType.PER_TEXTURE_LEVEL_STATE) {
return null;
}
return ((GLCompositeProperty) state).getProperty(GLStateType.TEXTURE_IMAGE);
}
/**
* Returns the first mipmap level's image entry if the provided state is either
* {@link GLStateType#PER_TEXTURE_STATE} or one of its immediate children, null otherwise.
*/
private IGLProperty getFirstMipmapImage(IGLProperty state) {
if (state != null && state.getType() != GLStateType.PER_TEXTURE_STATE) {
state = state.getParent();
}
if (state == null || state.getType() != GLStateType.PER_TEXTURE_STATE) {
return null;
}
IGLProperty mipmaps =
((GLCompositeProperty) state).getProperty(GLStateType.TEXTURE_MIPMAPS);
if (!(mipmaps instanceof GLSparseArrayProperty)) {
return null;
}
IGLProperty perTextureLevelState = ((GLSparseArrayProperty) mipmaps).getProperty(0);
return getImageFromPerTextureLevelState(perTextureLevelState);
}
@Override
public List<IContributionItem> getToolBarItems() {
return mToolBarItems;
}
}
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