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68 changes: 68 additions & 0 deletions
68
src/main/java/io/wcm/handler/mediasource/dam/impl/weboptimized/RelativeCroppingString.java
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/* | ||
* #%L | ||
* wcm.io | ||
* %% | ||
* Copyright (C) 2024 wcm.io | ||
* %% | ||
* 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. | ||
* #L% | ||
*/ | ||
package io.wcm.handler.mediasource.dam.impl.weboptimized; | ||
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import java.text.DecimalFormat; | ||
import java.text.DecimalFormatSymbols; | ||
import java.text.NumberFormat; | ||
import java.util.Locale; | ||
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import org.jetbrains.annotations.NotNull; | ||
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import io.wcm.handler.media.CropDimension; | ||
import io.wcm.handler.media.Dimension; | ||
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/** | ||
* Creates relative crop string with percentage values as required by the Web-Optimized Image Delivery API. | ||
* It uses one fractional digit for the percentage values. | ||
*/ | ||
final class RelativeCroppingString { | ||
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private static final NumberFormat DECIMAL_FORMAT = new DecimalFormat("0.0", new DecimalFormatSymbols(Locale.US)); | ||
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private RelativeCroppingString() { | ||
// static methods only | ||
} | ||
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static @NotNull String createFromCropDimension( | ||
@NotNull CropDimension cropDimension, @NotNull Dimension imageDimension) { | ||
double x1 = cropDimension.getLeft(); | ||
double y1 = cropDimension.getTop(); | ||
double left = x1 / imageDimension.getWidth(); | ||
double top = y1 / imageDimension.getHeight(); | ||
double width = (double)cropDimension.getWidth() / imageDimension.getWidth(); | ||
double height = (double)cropDimension.getHeight() / imageDimension.getHeight(); | ||
return create(left, top, width, height); | ||
} | ||
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static @NotNull String create(double left, double top, double width, double height) { | ||
return String.format("%sp,%sp,%sp,%sp", | ||
toPercentage(left), toPercentage(top), | ||
toPercentage(width), toPercentage(height)); | ||
} | ||
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private static String toPercentage(double fraction) { | ||
double percentage = Math.round(fraction * 1000d) / 10d; | ||
percentage = Math.max(0.0, percentage); | ||
percentage = Math.min(100.0, percentage); | ||
return DECIMAL_FORMAT.format(percentage); | ||
} | ||
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} |
39 changes: 39 additions & 0 deletions
39
...io/wcm/handler/mediasource/dam/impl/weboptimized/WebOptimizedImageDeliveryCropOption.java
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/* | ||
* #%L | ||
* wcm.io | ||
* %% | ||
* Copyright (C) 2024 wcm.io | ||
* %% | ||
* 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. | ||
* #L% | ||
*/ | ||
package io.wcm.handler.mediasource.dam.impl.weboptimized; | ||
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/** | ||
* Choose how to calculate/apply cropping parameter when using Web-Optimized image delivery. | ||
*/ | ||
public enum WebOptimizedImageDeliveryCropOption { | ||
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/** | ||
* Crop renditions using relative percentage values as parameters (e.g. crop=0.0p,5.0p,100.0p,80.0p), | ||
* based on the original image dimensions. | ||
*/ | ||
RELATIVE_PARAMETERS, | ||
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/** | ||
* Crop renditions using absolute pixel values as parameters (e.g. crop=0,10,200,100), | ||
* based on the original image dimensions. | ||
*/ | ||
ABSOLUTE_PARAMETERS | ||
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} |
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