Source Code Cross Referenced for BasicTextRenderer.java in  » Swing-Library » jgoodies-animation » com » jgoodies » animation » renderer » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » jgoodies animation » com.jgoodies.animation.renderer 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2001-2006 JGoodies Karsten Lentzsch. All Rights Reserved.
003:         *
004:         * Redistribution and use in source and binary forms, with or without 
005:         * modification, are permitted provided that the following conditions are met:
006:         * 
007:         *  o Redistributions of source code must retain the above copyright notice, 
008:         *    this list of conditions and the following disclaimer. 
009:         *     
010:         *  o Redistributions in binary form must reproduce the above copyright notice, 
011:         *    this list of conditions and the following disclaimer in the documentation 
012:         *    and/or other materials provided with the distribution. 
013:         *     
014:         *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
015:         *    its contributors may be used to endorse or promote products derived 
016:         *    from this software without specific prior written permission. 
017:         *     
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
020:         * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
021:         * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
022:         * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
023:         * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
025:         * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
026:         * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
027:         * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
028:         * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
029:         */
030:
031:        package com.jgoodies.animation.renderer;
032:
033:        import java.awt.Graphics2D;
034:
035:        /**
036:         * Renders a text with modifiable scaling, color, glyph spacing and position.
037:         *
038:         * @author Karsten Lentzsch
039:         * @version $Revision: 1.1 $
040:         */
041:        public final class BasicTextRenderer extends AbstractTextRenderer {
042:
043:            private float offsetX = 0.0f;
044:            private float offsetY = 0.0f;
045:            private float scaleX = 1.0f;
046:            private float scaleY = 1.0f;
047:            private float space = 0.0f;
048:
049:            /**
050:             * Constructs a renderer for a text that can be scaled, moved, and 
051:             * change inter-glyph space.
052:             * 
053:             * @param text   the text to be displayed
054:             */
055:            public BasicTextRenderer(String text) {
056:                super (text);
057:            }
058:
059:            public float getOffsetX() {
060:                return offsetX;
061:            }
062:
063:            public float getOffsetY() {
064:                return offsetY;
065:            }
066:
067:            public float getSpace() {
068:                return space;
069:            }
070:
071:            public void setOffsetX(float offsetX) {
072:                this .offsetX = offsetX;
073:            }
074:
075:            public void setOffsetY(float offsetY) {
076:                this .offsetY = offsetY;
077:            }
078:
079:            public void setSpace(float space) {
080:                this .space = space;
081:            }
082:
083:            public float getScaleX() {
084:                return scaleX;
085:            }
086:
087:            public float getScaleY() {
088:                return scaleY;
089:            }
090:
091:            public void setScaleX(float scaleX) {
092:                if (scaleX <= 0.0f)
093:                    throw new IllegalArgumentException(
094:                            "scaleX must be positive.");
095:
096:                this .scaleX = scaleX;
097:            }
098:
099:            public void setScaleY(float scaleY) {
100:                if (scaleY <= 0.0f)
101:                    throw new IllegalArgumentException(
102:                            "scaleY must be positive.");
103:
104:                this .scaleY = scaleY;
105:            }
106:
107:            /**
108:             * Renders the text. Firstly ensures a valid cache, then sets 
109:             * the color, and finally paints the cached glyph shapes.
110:             * 
111:             * @param g2   the graphics context to render on
112:             * @param width   the width of the drawing surface
113:             * @param height  the height of the drawing surface
114:             */
115:            public void render(Graphics2D g2, int width, int height) {
116:                ensureValidCache(g2);
117:
118:                int glyphCount = cachedGlyphShapes.length;
119:                float totalSpace = (glyphCount - 1) * space;
120:                float totalWidth = cachedTextWidth + totalSpace;
121:                float textHeight = getAdjustedAscent();
122:                float xOffset = getOffsetX() + (width - totalWidth * scaleX)
123:                        / 2.0f;
124:                float yOffset = getOffsetY() + (height + textHeight * scaleY)
125:                        / 2.0f - getAdjustedDescent();
126:
127:                g2.setColor(getColor());
128:                g2.translate(xOffset, yOffset);
129:                g2.scale(scaleX, scaleY);
130:                for (int i = 0; i < glyphCount; i++) {
131:                    g2.fill(cachedGlyphShapes[i]);
132:                    g2.translate(space, 0);
133:                }
134:                g2.scale(1.0f / scaleX, 1.0f / scaleY);
135:                g2.translate(-totalSpace - xOffset, -yOffset);
136:            }
137:
138:        }
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