Source Code Cross Referenced for VTextIcon.java in  » Web-Services » soapui-1.7.5 » com » eviware » soapui » support » components » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Web Services » soapui 1.7.5 » com.eviware.soapui.support.components 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  soapUI, copyright (C) 2004-2007 eviware.com 
003:         *
004:         *  soapUI is free software; you can redistribute it and/or modify it under the 
005:         *  terms of version 2.1 of the GNU Lesser General Public License as published by 
006:         *  the Free Software Foundation.
007:         *
008:         *  soapUI is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without 
009:         *  even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
010:         *  See the GNU Lesser General Public License for more details at gnu.org.
011:         */
012:
013:        package com.eviware.soapui.support.components;
014:
015:        import java.awt.Component;
016:        import java.awt.FontMetrics;
017:        import java.awt.Graphics;
018:        import java.awt.Graphics2D;
019:        import java.beans.PropertyChangeEvent;
020:        import java.beans.PropertyChangeListener;
021:
022:        import javax.swing.Icon;
023:
024:        /**
025:         VTextIcon is an Icon implementation which draws a short string vertically.
026:         It's useful for JTabbedPanes with LEFT or RIGHT tabs but can be used in any
027:         component which supports Icons, such as JLabel or JButton 
028:        
029:         You can provide a hint to indicate whether to rotate the string 
030:         to the left or right, or not at all, and it checks to make sure 
031:         that the rotation is legal for the given string 
032:         (for example, Chinese/Japanese/Korean scripts have special rules when 
033:         drawn vertically and should never be rotated)
034:         */
035:        public class VTextIcon implements  Icon, PropertyChangeListener {
036:            String fLabel;
037:            String[] fCharStrings; // for efficiency, break the fLabel into one-char strings to be passed to drawString
038:            int[] fCharWidths; // Roman characters should be centered when not rotated (Japanese fonts are monospaced)
039:            int[] fPosition; // Japanese half-height characters need to be shifted when drawn vertically
040:            int fWidth, fHeight, fCharHeight, fDescent; // Cached for speed
041:            int fRotation;
042:            Component fComponent;
043:
044:            static final int POSITION_NORMAL = 0;
045:            static final int POSITION_TOP_RIGHT = 1;
046:            static final int POSITION_FAR_TOP_RIGHT = 2;
047:
048:            public static final int ROTATE_DEFAULT = 0x00;
049:            public static final int ROTATE_NONE = 0x01;
050:            public static final int ROTATE_LEFT = 0x02;
051:            public static final int ROTATE_RIGHT = 0x04;
052:
053:            /**
054:             * Creates a <code>VTextIcon</code> for the specified <code>component</code>
055:             * with the specified <code>label</code>.
056:             * It sets the orientation to the default for the string
057:             * @see #verifyRotation
058:             */
059:            public VTextIcon(Component component, String label) {
060:                this (component, label, ROTATE_DEFAULT);
061:            }
062:
063:            /**
064:             * Creates a <code>VTextIcon</code> for the specified <code>component</code>
065:             * with the specified <code>label</code>.
066:             * It sets the orientation to the provided value if it's legal for the string
067:             * @see #verifyRotation
068:             */
069:            public VTextIcon(Component component, String label, int rotateHint) {
070:                fComponent = component;
071:                fLabel = label;
072:                fRotation = verifyRotation(label, rotateHint);
073:                calcDimensions();
074:                fComponent.addPropertyChangeListener(this );
075:            }
076:
077:            /**
078:             * sets the label to the given string, updating the orientation as needed
079:             * and invalidating the layout if the size changes
080:             * @see #verifyRotation
081:             */
082:            public void setLabel(String label) {
083:                fLabel = label;
084:                fRotation = verifyRotation(label, fRotation); // Make sure the current rotation is still legal
085:                recalcDimensions();
086:            }
087:
088:            /**
089:             * Checks for changes to the font on the fComponent
090:             * so that it can invalidate the layout if the size changes
091:             */
092:            public void propertyChange(PropertyChangeEvent e) {
093:                String prop = e.getPropertyName();
094:                if ("font".equals(prop)) {
095:                    recalcDimensions();
096:                }
097:            }
098:
099:            /** 
100:             * Calculates the dimensions.  If they've changed,
101:             * invalidates the component
102:             */
103:            void recalcDimensions() {
104:                int wOld = getIconWidth();
105:                int hOld = getIconHeight();
106:                calcDimensions();
107:                if (wOld != getIconWidth() || hOld != getIconHeight())
108:                    fComponent.invalidate();
109:            }
110:
111:            void calcDimensions() {
112:                FontMetrics fm = fComponent
113:                        .getFontMetrics(fComponent.getFont());
114:                fCharHeight = fm.getAscent() + fm.getDescent();
115:                fDescent = fm.getDescent();
116:                if (fRotation == ROTATE_NONE) {
117:                    int len = fLabel.length();
118:                    char data[] = new char[len];
119:                    fLabel.getChars(0, len, data, 0);
120:                    // if not rotated, width is that of the widest char in the string
121:                    fWidth = 0;
122:                    // we need an array of one-char strings for drawString
123:                    fCharStrings = new String[len];
124:                    fCharWidths = new int[len];
125:                    fPosition = new int[len];
126:                    char ch;
127:                    for (int i = 0; i < len; i++) {
128:                        ch = data[i];
129:                        fCharWidths[i] = fm.charWidth(ch);
130:                        if (fCharWidths[i] > fWidth)
131:                            fWidth = fCharWidths[i];
132:                        fCharStrings[i] = new String(data, i, 1);
133:                        // small kana and punctuation
134:                        if (sDrawsInTopRight.indexOf(ch) >= 0) // if ch is in sDrawsInTopRight
135:                            fPosition[i] = POSITION_TOP_RIGHT;
136:                        else if (sDrawsInFarTopRight.indexOf(ch) >= 0)
137:                            fPosition[i] = POSITION_FAR_TOP_RIGHT;
138:                        else
139:                            fPosition[i] = POSITION_NORMAL;
140:                    }
141:                    // and height is the font height * the char count, + one extra leading at the bottom
142:                    fHeight = fCharHeight * len + fDescent;
143:                } else {
144:                    // if rotated, width is the height of the string
145:                    fWidth = fCharHeight;
146:                    // and height is the width, plus some buffer space 
147:                    fHeight = fm.stringWidth(fLabel) + 2 * kBufferSpace;
148:                }
149:            }
150:
151:            /**
152:             * Draw the icon at the specified location.  Icon implementations
153:             * may use the Component argument to get properties useful for 
154:             * painting, e.g. the foreground or background color.
155:             */
156:            public void paintIcon(Component c, Graphics g, int x, int y) {
157:                // We don't insist that it be on the same Component
158:
159:                g.setColor(fComponent.getForeground());
160:                g.setFont(fComponent.getFont());
161:                if (fRotation == ROTATE_NONE) {
162:                    int yPos = y + fCharHeight;
163:                    for (int i = 0; i < fCharStrings.length; i++) {
164:                        // Special rules for Japanese - "half-height" characters (like ya, yu, yo in combinations)
165:                        // should draw in the top-right quadrant when drawn vertically
166:                        // - they draw in the bottom-left normally
167:                        int tweak;
168:                        switch (fPosition[i]) {
169:                        case POSITION_NORMAL:
170:                            // Roman fonts should be centered. Japanese fonts are always monospaced.  
171:                            g.drawString(fCharStrings[i], x
172:                                    + ((fWidth - fCharWidths[i]) / 2), yPos);
173:                            break;
174:                        case POSITION_TOP_RIGHT:
175:                            tweak = fCharHeight / 3; // Should be 2, but they aren't actually half-height
176:                            g.drawString(fCharStrings[i], x + (tweak / 2), yPos
177:                                    - tweak);
178:                            break;
179:                        case POSITION_FAR_TOP_RIGHT:
180:                            tweak = fCharHeight - fCharHeight / 3;
181:                            g.drawString(fCharStrings[i], x + (tweak / 2), yPos
182:                                    - tweak);
183:                            break;
184:                        }
185:                        yPos += fCharHeight;
186:                    }
187:                } else if (fRotation == ROTATE_LEFT) {
188:                    g.translate(x + fWidth, y + fHeight);
189:                    ((Graphics2D) g).rotate(-NINETY_DEGREES);
190:                    g.drawString(fLabel, kBufferSpace, -fDescent);
191:                    ((Graphics2D) g).rotate(NINETY_DEGREES);
192:                    g.translate(-(x + fWidth), -(y + fHeight));
193:                } else if (fRotation == ROTATE_RIGHT) {
194:                    g.translate(x, y);
195:                    ((Graphics2D) g).rotate(NINETY_DEGREES);
196:                    g.drawString(fLabel, kBufferSpace, -fDescent);
197:                    ((Graphics2D) g).rotate(-NINETY_DEGREES);
198:                    g.translate(-x, -y);
199:                }
200:
201:            }
202:
203:            /**
204:             * Returns the icon's width.
205:             *
206:             * @return an int specifying the fixed width of the icon.
207:             */
208:            public int getIconWidth() {
209:                return fWidth;
210:            }
211:
212:            /**
213:             * Returns the icon's height.
214:             *
215:             * @return an int specifying the fixed height of the icon.
216:             */
217:            public int getIconHeight() {
218:                return fHeight;
219:            }
220:
221:            /** 
222:            	 verifyRotation
223:            	
224:            	returns the best rotation for the string (ROTATE_NONE, ROTATE_LEFT, ROTATE_RIGHT)
225:            	
226:            	This is public static so you can use it to test a string without creating a VTextIcon
227:            	
228:             from http://www.unicode.org/unicode/reports/tr9/tr9-3.html
229:             When setting text using the Arabic script in vertical lines, 
230:             it is more common to employ a horizontal baseline that 
231:             is rotated by 90¡ counterclockwise so that the characters 
232:             are ordered from top to bottom. Latin text and numbers 
233:             may be rotated 90¡ clockwise so that the characters 
234:             are also ordered from top to bottom.
235:             
236:            	Rotation rules
237:             	- Roman can rotate left, right, or none - default right (counterclockwise)
238:            	- CJK can't rotate
239:            	- Arabic must rotate - default left (clockwise)
240:             
241:             from the online edition of _The Unicode Standard, Version 3.0_, file ch10.pdf page 4
242:             Ideographs are found in three blocks of the Unicode Standard...
243:             U+4E00-U+9FFF, U+3400-U+4DFF, U+F900-U+FAFF
244:             
245:             Hiragana is U+3040-U+309F, katakana is U+30A0-U+30FF
246:             
247:             from http://www.unicode.org/unicode/faq/writingdirections.html
248:             East Asian scripts are frequently written in vertical lines 
249:             which run from top-to-bottom and are arrange columns either 
250:             from left-to-right (Mongolian) or right-to-left (other scripts). 
251:             Most characters use the same shape and orientation when displayed 
252:             horizontally or vertically, but many punctuation characters 
253:             will change their shape when displayed vertically.
254:
255:             Letters and words from other scripts are generally rotated through 
256:             ninety degree angles so that they, too, will read from top to bottom. 
257:             That is, letters from left-to-right scripts will be rotated clockwise 
258:             and letters from right-to-left scripts counterclockwise, both 
259:             through ninety degree angles.
260:
261:            Unlike the bidirectional case, the choice of vertical layout 
262:            is usually treated as a formatting style; therefore, 
263:            the Unicode Standard does not define default rendering behavior 
264:            for vertical text nor provide directionality controls designed to override such behavior
265:
266:             */
267:            public static int verifyRotation(String label, int rotateHint) {
268:                boolean hasCJK = false;
269:                boolean hasMustRotate = false; // Arabic, etc
270:
271:                int len = label.length();
272:                char data[] = new char[len];
273:                char ch;
274:                label.getChars(0, len, data, 0);
275:                for (int i = 0; i < len; i++) {
276:                    ch = data[i];
277:                    if ((ch >= '\u4E00' && ch <= '\u9FFF')
278:                            || (ch >= '\u3400' && ch <= '\u4DFF')
279:                            || (ch >= '\uF900' && ch <= '\uFAFF')
280:                            || (ch >= '\u3040' && ch <= '\u309F')
281:                            || (ch >= '\u30A0' && ch <= '\u30FF'))
282:                        hasCJK = true;
283:                    if ((ch >= '\u0590' && ch <= '\u05FF') || // Hebrew
284:                            (ch >= '\u0600' && ch <= '\u06FF') || // Arabic
285:                            (ch >= '\u0700' && ch <= '\u074F')) // Syriac
286:                        hasMustRotate = true;
287:                }
288:                // If you mix Arabic with Chinese, you're on your own
289:                if (hasCJK)
290:                    return DEFAULT_CJK;
291:
292:                int legal = hasMustRotate ? LEGAL_MUST_ROTATE : LEGAL_ROMAN;
293:                if ((rotateHint & legal) > 0)
294:                    return rotateHint;
295:
296:                // The hint wasn't legal, or it was zero
297:                return hasMustRotate ? DEFAULT_MUST_ROTATE : DEFAULT_ROMAN;
298:            }
299:
300:            // The small kana characters and Japanese punctuation that draw in the top right quadrant:
301:            // small a, i, u, e, o, tsu, ya, yu, yo, wa  (katakana only) ka ke
302:            static final String sDrawsInTopRight = "\u3041\u3043\u3045\u3047\u3049\u3063\u3083\u3085\u3087\u308E"
303:                    + // hiragana 
304:                    "\u30A1\u30A3\u30A5\u30A7\u30A9\u30C3\u30E3\u30E5\u30E7\u30EE\u30F5\u30F6"; // katakana
305:            static final String sDrawsInFarTopRight = "\u3001\u3002"; // comma, full stop
306:
307:            static final int DEFAULT_CJK = ROTATE_NONE;
308:            static final int LEGAL_ROMAN = ROTATE_NONE | ROTATE_LEFT
309:                    | ROTATE_RIGHT;
310:            static final int DEFAULT_ROMAN = ROTATE_RIGHT;
311:            static final int LEGAL_MUST_ROTATE = ROTATE_LEFT | ROTATE_RIGHT;
312:            static final int DEFAULT_MUST_ROTATE = ROTATE_LEFT;
313:
314:            static final double NINETY_DEGREES = Math.toRadians(90.0);
315:            static final int kBufferSpace = 5;
316:        }
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