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Java > Open Source Codes > org > krysalis > barcode > output > CanvasProvider


1 /*
2  * $Id: CanvasProvider.java,v 1.6 2003/08/18 19:10:54 jmaerki Exp $
3  * ============================================================================
4  * The Krysalis Patchy Software License, Version 1.1_01
5  * Copyright (c) 2002-2003 Nicola Ken Barozzi. All rights reserved.
6  *
7  * This Licence is compatible with the BSD licence as described and
8  * approved by http://www.opensource.org/, and is based on the
9  * Apache Software Licence Version 1.1.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  *
15  * 1. Redistributions of source code must retain the above copyright
16  * notice, this list of conditions and the following disclaimer.
17  *
18  * 2. Redistributions in binary form must reproduce the above copyright
19  * notice, this list of conditions and the following disclaimer in
20  * the documentation and/or other materials provided with the
21  * distribution.
22  *
23  * 3. The end-user documentation included with the redistribution,
24  * if any, must include the following acknowledgment:
25  * "This product includes software developed for project
26  * Krysalis (http://www.krysalis.org/)."
27  * Alternately, this acknowledgment may appear in the software itself,
28  * if and wherever such third-party acknowledgments normally appear.
29  *
30  * 4. The names "Krysalis" and "Nicola Ken Barozzi" and
31  * "Krysalis Barcode" must not be used to endorse or promote products
32  * derived from this software without prior written permission. For
33  * written permission, please contact nicolaken@krysalis.org.
34  *
35  * 5. Products derived from this software may not be called "Krysalis",
36  * "Krysalis Barcode", nor may "Krysalis" appear in their name,
37  * without prior written permission of Nicola Ken Barozzi.
38  *
39  * 6. This software may contain voluntary contributions made by many
40  * individuals, who decided to donate the code to this project in
41  * respect of this licence, and was originally created by
42  * Jeremias Maerki <jeremias@maerki.org>.
43  *
44  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
45  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
46  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
47  * DISCLAIMED. IN NO EVENT SHALL THE KRYSALIS PROJECT OR
48  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
49  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
50  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
51  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
52  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
53  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
54  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55  * SUCH DAMAGE.
56  * ====================================================================
57  */
58 package org.krysalis.barcode.output;
59
60 import org.krysalis.barcode.BarcodeDimension;
61
62 /**
63  * This interface is implemented to provide an output format that is using
64  * a coordinate system.
65  *
66  * @author Jeremias Maerki
67  */
68 public interface CanvasProvider {
69
70     /**
71      * Sets the dimensions of the barcode.
72      * @param dim the dimensions of the barcode
73      */
74     void establishDimensions(BarcodeDimension dim);
75
76     /**
77      * Returns the barcode dimensions once established.
78      * @return the barcode dimensions
79      */
80     BarcodeDimension getDimensions();
81
82     /**
83      * Paints a filled rectangle.
84      * @param x x coordinate of the upper left corner
85      * @param y y coordinate of the upper left corner
86      * @param w the width
87      * @param h the height
88      */
89     void deviceFillRect(double x, double y, double w, double h);
90     
91     /**
92      * Draws justified text.
93      * @param text the text to draw
94      * @param x1 the left boundary
95      * @param x2 the right boundary
96      * @param y1 the y coordinate
97      * @param fontName the name of the font
98      * @param fontSize the size of the font
99      */
100     void deviceJustifiedText(String JavaDoc text, double x1, double x2, double y1,
101             String JavaDoc fontName, double fontSize);
102             
103     /**
104      * Draws centered text.
105      * @param text the text to draw
106      * @param x1 the left boundary
107      * @param x2 the right boundary
108      * @param y1 the y coordinate
109      * @param fontName the name of the font
110      * @param fontSize the size of the font
111      */
112     void deviceCenteredText(String JavaDoc text, double x1, double x2, double y1,
113             String JavaDoc fontName, double fontSize);
114
115 }
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