Source Code Cross Referenced for XGuidePane.java in  » XML-UI » XUI » net » xoetrope » builder » editor » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » XML UI » XUI » net.xoetrope.builder.editor 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package net.xoetrope.builder.editor;
002:
003:        import javax.swing.JPanel;
004:        import java.awt.Point;
005:        import java.awt.Graphics;
006:        import java.awt.Color;
007:        import java.awt.Dimension;
008:        import java.awt.event.MouseMotionListener;
009:        import java.awt.event.MouseListener;
010:        import java.awt.event.MouseEvent;
011:        import java.util.Vector;
012:        import java.awt.event.ComponentEvent;
013:        import java.awt.AWTEvent;
014:        import java.awt.Event;
015:        import javax.swing.JButton;
016:        import java.awt.event.ActionListener;
017:        import java.awt.event.ActionEvent;
018:        import javax.swing.JToggleButton;
019:        import java.awt.Rectangle;
020:        import javax.swing.SwingUtilities;
021:        import java.awt.Component;
022:        import java.util.prefs.Preferences;
023:        import java.awt.SystemColor;
024:
025:        /**
026:         * <p> Copyright (c) Xoetrope Ltd., 2002-2003</p>
027:         * <p> $Revision: 1.7 $</p>
028:         * <p> License: see License.txt</p>
029:         */
030:        public class XGuidePane extends JPanel implements  ActionListener {
031:            private int left, top, width, height;
032:
033:            private static final int NORMAL = 0;
034:            private static final int ADD_VERTICAL_GUIDE = 1;
035:            private static final int ADD_HORIZONTAL_GUIDE = 2;
036:            private static final int MOVE_VERTICAL_GUIDE = 3;
037:            private static final int MOVE_HORIZONTAL_GUIDE = 4;
038:
039:            private static final int GRID_SNAP_RANGE = 3;
040:
041:            private int mode = NORMAL;
042:            private int selectedGuideIdx = -1;
043:            private Point oldP;
044:
045:            private JToggleButton editBtn;
046:            private boolean editMode;
047:            private boolean paintGuides;
048:            private int snapRange;
049:
050:            private Vector horzGuides = new Vector();
051:            private Vector vertGuides = new Vector();
052:
053:            public XGuidePane() {
054:                setLayout(null);
055:                setOpaque(false);
056:                left = top = 10;
057:                width = 640;
058:                height = 480;
059:
060:                snapRange = GRID_SNAP_RANGE;
061:                Preferences prefs = Preferences
062:                        .userNodeForPackage(XuiEditor.class);
063:                snapRange = Integer.parseInt(prefs.get("GuideSnapRange",
064:                        Integer.toString(snapRange)));
065:
066:                editBtn = new JToggleButton();
067:                editBtn.setBounds(0, 0, 10, 10);
068:                editBtn.addActionListener(this );
069:                add(editBtn);
070:
071:                editMode = false;
072:                paintGuides = true;
073:            }
074:
075:            public void actionPerformed(ActionEvent e) {
076:                if (!editMode) {
077:                    enableEvents(AWTEvent.MOUSE_EVENT_MASK);
078:                    enableEvents(AWTEvent.MOUSE_MOTION_EVENT_MASK);
079:                } else {
080:                    disableEvents(AWTEvent.MOUSE_EVENT_MASK);
081:                    disableEvents(AWTEvent.MOUSE_MOTION_EVENT_MASK);
082:                }
083:                editMode = !editMode;
084:                editBtn.setSelected(editMode);
085:
086:                int numChildren = getComponentCount();
087:                for (int i = 0; i < numChildren; i++) {
088:                    Component c = (Component) getComponent(i);
089:                    if (c != editBtn)
090:                        c.setVisible(!editMode);
091:                }
092:            }
093:
094:            /**
095:             * Remove all the children
096:             */
097:            public void clear() {
098:                int numChildren = getComponentCount();
099:                Component children[] = getComponents();
100:                for (int i = 0; i < numChildren; i++) {
101:                    if (children[i] != editBtn)
102:                        remove(children[i]);
103:                }
104:            }
105:
106:            /**
107:             * Toggle the painting of the guides and gutters
108:             * @param doPaint true to do the painting
109:             */
110:            public void setPaintGuides(boolean doPaint) {
111:                paintGuides = doPaint;
112:                editBtn.setVisible(doPaint);
113:            }
114:
115:            /**
116:             * Get the flag indicating painting of the guides and gutters
117:             * @param true if the guides are painted
118:             */
119:            public boolean getPaintGuides() {
120:                return paintGuides;
121:            }
122:
123:            public void paintComponent(Graphics g) {
124:                if (paintGuides) {
125:                    Rectangle clipRect = g.getClipBounds();
126:                    paintGrid(g, clipRect);
127:                    paintGutters(g, clipRect);
128:                } else
129:                    super .paintComponent(g);
130:            }
131:
132:            public void paintGrid(Graphics g, Rectangle clipRect) {
133:                g.setColor(new Color(255, 0, 0, 56));
134:
135:                int numVertGuides = vertGuides.size();
136:                for (int i = 0; i < numVertGuides; i++) {
137:                    int coord = ((Integer) vertGuides.elementAt(i)).intValue();
138:                    g.drawLine(left + coord, top, left + coord, top + height);
139:                }
140:
141:                int numHorzGuides = horzGuides.size();
142:                for (int i = 0; i < numHorzGuides; i++) {
143:                    int coord = ((Integer) horzGuides.elementAt(i)).intValue();
144:                    g.drawLine(left, top + coord, left + width, top + coord);
145:                }
146:            }
147:
148:            public void paintGutters(Graphics g, Rectangle clipRect) {
149:                Dimension d = getSize();
150:                int right = Math.min(d.width, clipRect.x + clipRect.width);
151:                int startX = clipRect.x;
152:                int bottom = Math.min(d.height, clipRect.y + clipRect.height);
153:                int startY = clipRect.y;
154:                startX -= startX % 5;
155:                startY -= startY % 5;
156:
157:                int delta = 1;
158:
159:                if (startY < top) {
160:                    // Draw the background
161:                    g.setColor(SystemColor.control);
162:                    g.fillRect(startX, 0, right - startX, top);
163:
164:                    // Draw the edges
165:                    g.setColor(SystemColor.controlDkShadow);
166:                    g.drawLine(left, top - 1, d.width - 1, top - 1);
167:
168:                    // Draw the top minor grid lines
169:                    int ht = top / 2;
170:                    for (int x = startX; x < right; x += 5) {
171:                        g.drawLine(x, ht - delta, x, top - 1);
172:                        delta = -delta;
173:                    }
174:
175:                    // Draw the top major grid lines
176:                    ht = top / 4;
177:                    for (int x = startX; x < right; x += 100)
178:                        g.drawLine(x, ht, x, top - 1);
179:                }
180:
181:                if (startX < left) {
182:                    // Draw the background
183:                    g.setColor(SystemColor.control);
184:                    g.fillRect(0, startY, left, height - startY);
185:
186:                    // Draw the edges
187:                    g.setColor(SystemColor.controlDkShadow);
188:                    g.drawLine(left - 1, top - 1, left - 1, d.height - 1);
189:
190:                    // Draw the left hand minor grid lines
191:                    int wh = left / 2;
192:                    for (int y = startY; y < bottom; y += 5) {
193:                        g.drawLine(wh - delta, y, left - 1, y);
194:                        delta = -delta;
195:                    }
196:
197:                    // Draw the left hand major grid lines
198:                    wh = left / 4;
199:                    for (int y = startY; y < bottom; y += 100)
200:                        g.drawLine(wh, y, left - 1, y);
201:                }
202:            }
203:
204:            /**
205:             * Set the dimensions of the page container whos grid is being rendered
206:             * @param x
207:             * @param y
208:             * @param w
209:             * @param h
210:             */
211:            public void setPageBounds(int x, int y, int w, int h) {
212:                left = x;
213:                top = y;
214:                width = w;
215:                height = h;
216:            }
217:
218:            public void processMouseEvent(MouseEvent e) {
219:                if (e.getID() == MouseEvent.MOUSE_PRESSED)
220:                    mousePressed(e);
221:                else if (e.getID() == MouseEvent.MOUSE_RELEASED)
222:                    mouseReleased(e);
223:
224:                super .processMouseEvent(e);
225:            }
226:
227:            public void processMouseMotionEvent(MouseEvent e) {
228:                if (e.getID() == MouseEvent.MOUSE_DRAGGED)
229:                    mouseDragged(e);
230:
231:                super .processMouseMotionEvent(e);
232:            }
233:
234:            public void mousePressed(MouseEvent e) {
235:                oldP = e.getPoint();
236:                if (oldP.y < top) {
237:                    mode = ADD_HORIZONTAL_GUIDE;
238:                } else if (oldP.x < left) {
239:                    mode = ADD_VERTICAL_GUIDE;
240:                } else {
241:                    int numVertGuides = vertGuides.size();
242:                    for (int i = 0; i < numVertGuides; i++) {
243:                        int coord = ((Integer) vertGuides.elementAt(i))
244:                                .intValue();
245:                        if (Math.abs(coord - (oldP.x - left)) < 2) {
246:                            mode = MOVE_VERTICAL_GUIDE;
247:                            selectedGuideIdx = i;
248:                            return;
249:                        }
250:                    }
251:
252:                    int numHorzGuides = horzGuides.size();
253:                    for (int i = 0; i < numHorzGuides; i++) {
254:                        int coord = ((Integer) horzGuides.elementAt(i))
255:                                .intValue();
256:                        if (Math.abs(coord - (oldP.y - top)) < 2) {
257:                            mode = MOVE_HORIZONTAL_GUIDE;
258:                            selectedGuideIdx = i;
259:                        }
260:                    }
261:                }
262:            }
263:
264:            public void mouseReleased(MouseEvent e) {
265:                Point p = e.getPoint();
266:                if (mode == ADD_HORIZONTAL_GUIDE) {
267:                    if ((p.y > left) && (p.y < height + top))
268:                        horzGuides.add(new Integer(p.y - top));
269:                } else if (mode == ADD_VERTICAL_GUIDE) {
270:                    if ((p.x > top) && (p.x < width + left))
271:                        vertGuides.add(new Integer(p.x - left));
272:                } else if (mode == MOVE_VERTICAL_GUIDE) {
273:                    if (selectedGuideIdx > -1) {
274:                        vertGuides.removeElementAt(selectedGuideIdx);
275:                        if (p.x > left)
276:                            vertGuides.add(new Integer(p.x - left));
277:                    }
278:                } else if (mode == MOVE_HORIZONTAL_GUIDE) {
279:                    if (selectedGuideIdx > -1) {
280:                        horzGuides.removeElementAt(selectedGuideIdx);
281:                        if (p.y > top)
282:                            horzGuides.add(new Integer(p.y - top));
283:                    }
284:                } else
285:                    return;
286:
287:                mode = NORMAL;
288:                selectedGuideIdx = -1;
289:                repaint();
290:            }
291:
292:            public void mouseDragged(MouseEvent e) {
293:                if (mode == NORMAL)
294:                    return;
295:                else {
296:                    Point p = e.getPoint();
297:                    Graphics g = getGraphics();
298:                    Color moveColor = new Color(255, 0, 0, 56);
299:                    g.setXORMode(moveColor);
300:                    if ((mode == ADD_HORIZONTAL_GUIDE)
301:                            || (mode == MOVE_HORIZONTAL_GUIDE)) {
302:                        if ((p.x > top) && (p.x < width + left)) {
303:                            g.drawLine(left, oldP.y, left + width, oldP.y);
304:                            g.drawLine(left, p.y, left + width, p.y);
305:                            oldP = p;
306:                        }
307:                    } else if ((mode == ADD_VERTICAL_GUIDE)
308:                            || (mode == MOVE_VERTICAL_GUIDE)) {
309:                        if ((p.y > left) && (p.y < height + top)) {
310:                            g.drawLine(oldP.x, top, oldP.x, top + height);
311:                            g.drawLine(p.x, top, p.x, top + height);
312:                            oldP = p;
313:                        }
314:                    }
315:                    g.dispose();
316:                    g = null;
317:                }
318:            }
319:
320:            public void alignComponents(Vector selectedComponents) {
321:                int numComponents = selectedComponents.size();
322:                int numVertGuides = vertGuides.size();
323:                int numHorzGuides = horzGuides.size();
324:
325:                for (int i = 0; i < numComponents; i++) {
326:                    XComponentSizer currentSizer = (XComponentSizer) selectedComponents
327:                            .elementAt(i);
328:                    Rectangle rect = currentSizer.getBounds();
329:
330:                    for (int iV = 0; iV < numVertGuides; iV++) {
331:                        int coord = ((Integer) vertGuides.elementAt(iV))
332:                                .intValue()
333:                                + left + 1;
334:                        Point convertedCoord = SwingUtilities.convertPoint(
335:                                this , coord, 0, currentSizer.getParent());
336:                        // Check the left edge and then the right edge
337:                        if (Math.abs(convertedCoord.x - rect.x) <= snapRange)
338:                            currentSizer.setLocation(convertedCoord.x, rect.y);
339:                        else if (Math.abs(convertedCoord.x
340:                                - (rect.x + rect.width)) <= snapRange)
341:                            currentSizer.setSize(convertedCoord.x - rect.x,
342:                                    rect.height);
343:                    }
344:
345:                    // Refresh the rect as it may have changed
346:                    rect = currentSizer.getBounds();
347:                    for (int iH = 0; iH < numHorzGuides; iH++) {
348:                        int coord = ((Integer) horzGuides.elementAt(iH))
349:                                .intValue()
350:                                + top + 1;
351:                        Point convertedCoord = SwingUtilities.convertPoint(
352:                                this , 0, coord, currentSizer.getParent());
353:                        // Check the top edge and then the bottom
354:                        if (Math.abs(convertedCoord.y - rect.y) <= snapRange)
355:                            currentSizer.setLocation(rect.x, convertedCoord.y);
356:                        else if (Math.abs(convertedCoord.y
357:                                - (rect.y + rect.height)) <= snapRange)
358:                            currentSizer.setSize(rect.width, convertedCoord.y
359:                                    - rect.y);
360:                    }
361:                }
362:            }
363:
364:            /**
365:             * Get the guide coordinates
366:             * @param vert
367:             * @return
368:             */
369:            public Vector getGuideCoords(boolean vert) {
370:                if (vert)
371:                    return vertGuides;
372:                else
373:                    return horzGuides;
374:            }
375:        }
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