Classes

Class	Line #	Total Statements	% Filtered	Complexity	Uncovered Elements	TOTAL Coverage	Actions
MultiStepResizer	51	37	0%	13	10	0.833333383.3%	Show methods

Class MultiStepResizer

Class MultiStepResizer	Line # 51	Total Statements 37	% Filtered 0%	Complexity 13	Uncovered Elements 10	TOTAL Coverage 0.833333383.3%
resize(BufferedImage,Coords,Size) : BufferedImage   resize(BufferedImage,Coords,Size) : BufferedImage	5252	37.037	0.00%	13.013	10.010	0.8305085 0.830508583.1%

 

Contributing tests

Contributing tests

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	Test contribution	Test	Result	Actions
	0.8333333	info.magnolia.imaging.operations.cropresize.MultiStepResizerTest.jpgNeedsAnEyeToCheckinfo.magnolia.imaging.operations.cropresize.MultiStepResizerTest.jpgNeedsAnEyeToCheck	1PASS
	0.6	info.magnolia.imaging.operations.cropresize.CropAndResizeQualityTest.pngNeedsAnEyeToCheckinfo.magnolia.imaging.operations.cropresize.CropAndResizeQualityTest.pngNeedsAnEyeToCheck	1PASS
	0.6	info.magnolia.imaging.operations.cropresize.CropAndResizeQualityTest.jpgNeedsAnEyeToCheckinfo.magnolia.imaging.operations.cropresize.CropAndResizeQualityTest.jpgNeedsAnEyeToCheck	1PASS

 

Source view

1		/**
2		* This file Copyright (c) 2009-2018 Magnolia International
3		* Ltd. (http://www.magnolia-cms.com). All rights reserved.
4		*
5		*
6		* This file is dual-licensed under both the Magnolia
7		* Network Agreement and the GNU General Public License.
8		* You may elect to use one or the other of these licenses.
9		*
10		* This file is distributed in the hope that it will be
11		* useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12		* implied warranty of MERCHANTABILITY or FITNESS FOR A
13		* PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14		* Redistribution, except as permitted by whichever of the GPL
15		* or MNA you select, is prohibited.
16		*
17		* 1. For the GPL license (GPL), you can redistribute and/or
18		* modify this file under the terms of the GNU General
19		* Public License, Version 3, as published by the Free Software
20		* Foundation. You should have received a copy of the GNU
21		* General Public License, Version 3 along with this program;
22		* if not, write to the Free Software Foundation, Inc., 51
23		* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24		*
25		* 2. For the Magnolia Network Agreement (MNA), this file
26		* and the accompanying materials are made available under the
27		* terms of the MNA which accompanies this distribution, and
28		* is available at http://www.magnolia-cms.com/mna.html
29		*
30		* Any modifications to this file must keep this entire header
31		* intact.
32		*
33		*/
34		package info.magnolia.imaging.operations.cropresize.resizers;
35
36		import info.magnolia.imaging.operations.cropresize.Coords;
37		import info.magnolia.imaging.operations.cropresize.Size;
38		import info.magnolia.imaging.util.ImageUtil;
39
40		import java.awt.Graphics2D;
41		import java.awt.RenderingHints;
42		import java.awt.image.BufferedImage;
43
44		/**
45		* Highly inspired by http://today.java.net/lpt/a/362
46		*
47		* This method will use a multi-step scaling technique that provides higher quality than the usual
48		* one-step technique (only useful in downscaling cases, where {@code targetWidth} or {@code targetHeight} is
49		* smaller than the original dimensions, and generally only when the {@code BILINEAR} hint is specified).
50		*/
		83.3% Uncovered Elements: 10 (60) Complexity: 13 Complexity Density: 0.35
51		public class MultiStepResizer extends BasicResizer {
		83.1% Uncovered Elements: 10 (59) Complexity: 13 Complexity Density: 0.35
52	6	@Override...
53		public BufferedImage resize(BufferedImage src, Coords srcCoords, Size targetSize) {
54	6	final int targetWidth = targetSize.getWidth();
55	6	final int targetHeight = targetSize.getHeight();
56	6	final int type = ImageUtil.getImageType(src);
57	6	BufferedImage ret = src;
58	6	int w, h;
59
60		// Use multi-step technique: start with original size, then
61		// scale down in multiple passes with drawImage()
62		// until the target size is reached
63	6	w = srcCoords.getWidth();
64	6	h = srcCoords.getHeight();
65
66	6	boolean firstStep = true;
67	6	do {
68	6	if (w > targetWidth) {
69	3	w /= 2;
70	3	if (w < targetWidth) {
71	3	w = targetWidth;
72		}
73	3	} else if (w < targetWidth) {
74	3	w = targetWidth * 2;
75	3	if (w > targetWidth) {
76	3	w = targetWidth;
77		}
78		}
79
80	6	if (h > targetHeight) {
81	3	h /= 2;
82	3	if (h < targetHeight) {
83	3	h = targetHeight;
84		}
85	3	} else if (h < targetHeight) {
86	3	h = targetHeight * 2;
87	3	if (h > targetHeight) {
88	3	h = targetHeight;
89		}
90		}
91
92	6	final BufferedImage tmp = new BufferedImage(w, h, type);
93	6	final Graphics2D g2 = tmp.createGraphics();
94	6	g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, getInterpolationHint());
95	6	if (firstStep) {
96	6	g2.drawImage(ret, 0, 0, w, h, srcCoords.getX1(), srcCoords.getY1(), srcCoords.getX2(), srcCoords.getY2(), null);
97		} else {
98	0	g2.drawImage(ret, 0, 0, w, h, null);
99		}
100	6	g2.dispose();
101	6	if (ret != null) {
102		// if we are generating many images, flush native resources w/o waiting for GC to do this for you
103	6	ret.flush();
104		}
105	6	ret = tmp;
106	6	firstStep = false;
107	6	} while (w != targetWidth || h != targetHeight);
108
109	6	return ret;
110		}
111		}