1 /*
2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javafx.scene.layout;
27
28 import com.sun.javafx.css.StyleConverterImpl;
29 import com.sun.javafx.css.StyleManager;
30 import com.sun.javafx.scene.layout.region.RepeatStruct;
31 import java.util.Map;
32 import javafx.css.CssMetaData;
33 import javafx.css.ParsedValue;
34 import javafx.css.StyleConverter;
35 import javafx.css.Styleable;
36 import javafx.geometry.Insets;
37 import javafx.scene.image.Image;
38 import javafx.scene.paint.Paint;
39
40 /**
41 * Converts the CSS for -fx-background items into a Background.
42 */
43 class BackgroundConverter extends StyleConverterImpl<ParsedValue[], Background> {
44
45 static final StyleConverter<ParsedValue[], Background> INSTANCE = new BackgroundConverter();
46
47 @Override public Background convert(Map<CssMetaData<? extends Styleable, ?>,Object> convertedValues) {
48 final Paint[] fills = (Paint[]) convertedValues.get(Background.BACKGROUND_COLOR);
49 final String[] imageUrls = (String[]) convertedValues.get(Background.BACKGROUND_IMAGE);
50 final boolean hasFills = fills != null && fills.length > 0;
51 final boolean hasImages = imageUrls != null && imageUrls.length > 0;
52
53 // If there are neither background fills nor images, then there is nothing for us to construct.
54 if (!hasFills && !hasImages) return null;
55
56 // Iterate over all of the fills, and create BackgroundFill objects for each.
57 BackgroundFill[] backgroundFills = null;
58 if (hasFills) {
59 backgroundFills = new BackgroundFill[fills.length];
60
61 Object tmp = convertedValues.get(Background.BACKGROUND_INSETS);
62 final Insets[] insets = tmp == null ? new Insets[0] : (Insets[]) tmp;
63
64 tmp = convertedValues.get(Background.BACKGROUND_RADIUS);
65 final CornerRadii[] radii = tmp == null ? new CornerRadii[0] : (CornerRadii[]) tmp;
66
67 final int lastInsetsIndex = insets.length - 1;
68 final int lastRadiiIndex = radii.length - 1;
69 for (int i=0; i<fills.length; i++) {
70 Insets in = insets.length > 0 ? insets[i <= lastInsetsIndex ? i : lastInsetsIndex] : Insets.EMPTY;
71 CornerRadii ra = radii.length > 0 ? radii[i <= lastRadiiIndex ? i : lastRadiiIndex] : CornerRadii.EMPTY;
72 backgroundFills[i] = new BackgroundFill(fills[i], ra, in);
73 }
74 }
75
76 // Iterate over all of the image, and create BackgroundImage objects for each.
77 BackgroundImage[] backgroundImages = null;
78 if (hasImages) {
79 // TODO convert image urls into image objects!
80 backgroundImages = new BackgroundImage[imageUrls.length];
81
82 Object tmp = convertedValues.get(Background.BACKGROUND_REPEAT);
83 final RepeatStruct[] repeats = tmp == null ? new RepeatStruct[0] : (RepeatStruct[]) tmp;
84
85 tmp = convertedValues.get(Background.BACKGROUND_POSITION);
86 final BackgroundPosition[] positions = tmp == null ? new BackgroundPosition[0] : (BackgroundPosition[]) tmp;
87
88 tmp = convertedValues.get(Background.BACKGROUND_SIZE);
89 final BackgroundSize[] sizes = tmp == null ? new BackgroundSize[0] : (BackgroundSize[]) tmp;
90
91 final int lastRepeatIndex = repeats.length - 1;
92 final int lastPositionIndex = positions.length - 1;
93 final int lastSizeIndex = sizes.length - 1;
94 for (int i = 0; i < imageUrls.length; i++) {
95 // RT-21335: skip background and border images whose image url is null
96 if (imageUrls[i] == null) continue;
97
98 final Image image = StyleManager.getInstance().getCachedImage(imageUrls[i]);
99 if (image == null) continue;
100
101 final RepeatStruct repeat = (repeats.length > 0) ?
102 repeats[i <= lastRepeatIndex ? i : lastRepeatIndex] : null; // min
103 final BackgroundPosition position = (positions.length > 0) ?
104 positions[i <= lastPositionIndex ? i : lastPositionIndex] : null; // min
105 final BackgroundSize size = (sizes.length > 0) ?
106 sizes[i <= lastSizeIndex ? i : lastSizeIndex] : null; // min
107 backgroundImages[i] = new BackgroundImage(image,
108 repeat == null ? null : repeat.repeatX,
109 repeat == null ? null : repeat.repeatY,
110 position, size);
111 }
112 }
113
114 // Give the background fills and background images to a newly constructed BackgroundConverter,
115 // and return it.
116 return new Background(backgroundFills, backgroundImages);
117 }
118 }