root / trunk / extensions / extRasterTools-SE / src / org / gvsig / raster / beans / canvas / layers / StraightLine.java @ 19354
History | View | Annotate | Download (9.64 KB)
1 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
---|---|
2 |
*
|
3 |
* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
|
4 |
*
|
5 |
* This program is free software; you can redistribute it and/or
|
6 |
* modify it under the terms of the GNU General Public License
|
7 |
* as published by the Free Software Foundation; either version 2
|
8 |
* of the License, or (at your option) any later version.
|
9 |
*
|
10 |
* This program is distributed in the hope that it will be useful,
|
11 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
12 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
13 |
* GNU General Public License for more details.
|
14 |
*
|
15 |
* You should have received a copy of the GNU General Public License
|
16 |
* along with this program; if not, write to the Free Software
|
17 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
18 |
*/
|
19 |
package org.gvsig.raster.beans.canvas.layers; |
20 |
|
21 |
import java.awt.BasicStroke; |
22 |
import java.awt.Color; |
23 |
import java.awt.Cursor; |
24 |
import java.awt.Graphics; |
25 |
import java.awt.Graphics2D; |
26 |
import java.awt.Point; |
27 |
import java.awt.Stroke; |
28 |
import java.awt.event.MouseEvent; |
29 |
import java.util.ArrayList; |
30 |
|
31 |
import org.gvsig.raster.beans.canvas.DrawableElement; |
32 |
import org.gvsig.raster.beans.canvas.GCanvas; |
33 |
/**
|
34 |
* Representa una linea recta con puntos de arrastre para la ecualizaci?n de
|
35 |
* un histograma y realce lineales y dencity slicing.
|
36 |
*
|
37 |
* 14-oct-2007
|
38 |
* @author Nacho Brodin (nachobrodin@gmail.com)
|
39 |
*/
|
40 |
public class StraightLine extends DrawableElement { |
41 |
|
42 |
/**
|
43 |
* Representa un punto seleccionado sobre el canvas. Este es
|
44 |
* dibujado como un peque?o cuadrado.
|
45 |
*
|
46 |
* 14-oct-2007
|
47 |
* @author Nacho Brodin (nachobrodin@gmail.com)
|
48 |
*/
|
49 |
class Square { |
50 |
private double x = 0.0D; |
51 |
private double y = 0.0D; |
52 |
private int width = 6; |
53 |
private Color color = Color.WHITE; |
54 |
private int border = 2; |
55 |
|
56 |
/**
|
57 |
* Constructor. Calcula las esquinas del cuadrado
|
58 |
* @param p
|
59 |
*/
|
60 |
public Square(double x, double y) { |
61 |
setPosition(x, y); |
62 |
} |
63 |
|
64 |
/**
|
65 |
* Constructor. Calcula las esquinas del cuadrado
|
66 |
* @param p
|
67 |
*/
|
68 |
public Square(int x, int y) { |
69 |
setPosition(x, y); |
70 |
} |
71 |
|
72 |
/**
|
73 |
* Asigna una nueva posici?n al punto
|
74 |
* @param x
|
75 |
*/
|
76 |
public void setPosition(double x, double y) { |
77 |
this.x = x;
|
78 |
this.y = y;
|
79 |
|
80 |
if (this.x > 1.0D) this.x = 1.0D; |
81 |
if (this.x < 0.0D) this.x = 0.0D; |
82 |
if (this.y > 1.0D) this.y = 1.0D; |
83 |
if (this.y < 0.0D) this.y = 0.0D; |
84 |
} |
85 |
|
86 |
/**
|
87 |
* Asigna una nueva posici?n al punto
|
88 |
* @param x
|
89 |
*/
|
90 |
public void setPosition(int x, int y) { |
91 |
setPosition(pixelToValueX(x), pixelToValueY(y)); |
92 |
} |
93 |
|
94 |
public int getPixelX() { |
95 |
return valueToPixelX(x);
|
96 |
} |
97 |
|
98 |
public int getPixelY() { |
99 |
return valueToPixelY(y);
|
100 |
} |
101 |
|
102 |
public double getX() { |
103 |
return x;
|
104 |
} |
105 |
|
106 |
public double getY() { |
107 |
return y;
|
108 |
} |
109 |
|
110 |
/**
|
111 |
* Dibuja el cuadrado
|
112 |
* @param g
|
113 |
*/
|
114 |
protected void paint(Graphics g) { |
115 |
g.setColor(color); |
116 |
g.drawRect((int) valueToPixelX(x) - (width >> 1), (int) valueToPixelY(y) - (width >> 1), (int) width, (int)width); |
117 |
} |
118 |
|
119 |
/**
|
120 |
* Informa de si el punto pasado por par?metro cae dentro del cuadro o no
|
121 |
* @param p Punto a comprobar
|
122 |
* @return true si el punto est? dentro y false si no lo est?
|
123 |
*/
|
124 |
public boolean isInside(Point p) { |
125 |
if (p.getX() < (valueToPixelX(x) - (width >> 1))) |
126 |
return false; |
127 |
if (p.getX() > (valueToPixelX(x) + (width >> 1))) |
128 |
return false; |
129 |
if (p.getY() < (valueToPixelY(y) - (width >> 1))) |
130 |
return false; |
131 |
if (p.getY() > (valueToPixelY(y) + (width >> 1))) |
132 |
return false; |
133 |
return true; |
134 |
} |
135 |
|
136 |
/**
|
137 |
* Asigna el color del cuadrado
|
138 |
* @param c Color
|
139 |
*/
|
140 |
public void setColor(Color c) { |
141 |
this.color = c;
|
142 |
} |
143 |
|
144 |
private int valueToPixelX(double value) { |
145 |
return (int) Math.round(canvas.getCanvasMinX() + border + ((canvas.getCanvasMaxX() - canvas.getCanvasMinX() - (border * 2)) * value)); |
146 |
} |
147 |
|
148 |
private double pixelToValueX(int pixel) { |
149 |
return ((double) (pixel - canvas.getCanvasMinX() - border) / (double) (canvas.getCanvasMaxX() - canvas.getCanvasMinX() - (border * 2))); |
150 |
} |
151 |
|
152 |
private int valueToPixelY(double value) { |
153 |
value = 1.0D - value;
|
154 |
return (int) Math.round(canvas.getCanvasMinY() + border + ((canvas.getCanvasMaxY() - canvas.getCanvasMinY() - (border * 2)) * value)); |
155 |
} |
156 |
|
157 |
private double pixelToValueY(int pixel) { |
158 |
return (1.0D - ((double) (pixel - canvas.getCanvasMinY() - border) / (double) (canvas.getCanvasMaxY() - canvas.getCanvasMinY() - (border * 2)))); |
159 |
} |
160 |
} |
161 |
|
162 |
/**
|
163 |
* Lista de cuadrados que intersectan con la recta
|
164 |
*/
|
165 |
private ArrayList listSquare = new ArrayList(); |
166 |
private int pointDragged = -1; |
167 |
|
168 |
/**
|
169 |
* Constructor. Asigna el color
|
170 |
* @param c
|
171 |
*/
|
172 |
public StraightLine(Color c) { |
173 |
setColor(c); |
174 |
listSquare.add(new Square(0.0D, 0.0D)); |
175 |
listSquare.add(new Square(1.0D, 1.0D)); |
176 |
} |
177 |
|
178 |
/*
|
179 |
* (non-Javadoc)
|
180 |
* @see org.gvsig.raster.beans.canvas.DrawableElement#firstDrawActions()
|
181 |
*/
|
182 |
public void firstDrawActions() { |
183 |
} |
184 |
|
185 |
/**
|
186 |
* Dibujado de las l?neas y cuadros sobre el canvas
|
187 |
*/
|
188 |
public void paint(Graphics g) { |
189 |
g.setColor(color); |
190 |
|
191 |
// Dibujamos una l?nea desde un punto hasta el siguiente
|
192 |
Square square = null;
|
193 |
Square lastSquare = null;
|
194 |
|
195 |
for (int i = 0; i < listSquare.size(); i++) { |
196 |
lastSquare = square; |
197 |
square = ((Square) listSquare.get(i)); |
198 |
square.setColor(color); |
199 |
if ((pointDragged != i) && canvas.isMouse())
|
200 |
square.paint(g); |
201 |
|
202 |
if (lastSquare != null) |
203 |
g.drawLine(lastSquare.getPixelX(), lastSquare.getPixelY(), square.getPixelX(), square.getPixelY()); |
204 |
} |
205 |
} |
206 |
|
207 |
/**
|
208 |
* Asigna el objeto JComponent donde se pintan los elementos. Inicializa los puntos
|
209 |
* de inicio y fin de l?nea y asigna los listener
|
210 |
* @param canvas
|
211 |
*/
|
212 |
public void setCanvas(GCanvas canvas) { |
213 |
super.setCanvas(canvas);
|
214 |
} |
215 |
|
216 |
/**
|
217 |
* Inserta un elemento (cuadrado) en el array entre los dos cuadrados entre los que se
|
218 |
* encuentre el valor de su X, as? siempre est?n ordenados en el array por valor de X.
|
219 |
* @param element
|
220 |
* @return Devuelve la posici?n del elemento insertado, en caso de no poder insertarse
|
221 |
* devolver? -1
|
222 |
*/
|
223 |
private int insert(Square element) { |
224 |
for (int i = 0; i < (listSquare.size() - 1); i++) { |
225 |
double sqX = ((Square) listSquare.get(i)).getX();
|
226 |
double sqNextX = ((Square) listSquare.get(i + 1)).getX(); |
227 |
if (element.getX() >= sqX && element.getX() <= sqNextX) {
|
228 |
listSquare.add(i + 1, element);
|
229 |
return i + 1; |
230 |
} |
231 |
} |
232 |
return -1; |
233 |
} |
234 |
|
235 |
/**
|
236 |
* Se captura el punto a arrastrar, en caso de que no coincida con un punto,
|
237 |
* se inserta
|
238 |
*/
|
239 |
public boolean mousePressed(MouseEvent e) { |
240 |
for (int i = 0; i < listSquare.size(); i++) { |
241 |
if (((Square) listSquare.get(i)).isInside(e.getPoint())) {
|
242 |
if ((e.getModifiersEx() & MouseEvent.BUTTON3_DOWN_MASK) != 0) { |
243 |
if ((i == 0) || ((i + 1) == listSquare.size())) |
244 |
continue;
|
245 |
pointDragged = -1;
|
246 |
listSquare.remove(i); |
247 |
canvas.repaint(); |
248 |
return false; |
249 |
} |
250 |
if ((e.getModifiersEx() & MouseEvent.BUTTON1_DOWN_MASK) != 0) { |
251 |
pointDragged = i; |
252 |
this.mouseDragged(e);
|
253 |
return false; |
254 |
} |
255 |
} |
256 |
} |
257 |
|
258 |
if ((e.getModifiersEx() & MouseEvent.BUTTON1_DOWN_MASK) == 0) |
259 |
return true; |
260 |
// En caso de que nadie lo este tratando, osea, un cursor normal
|
261 |
if (canvas.getCursor().getType() == Cursor.DEFAULT_CURSOR) { |
262 |
pointDragged = insert(new Square(e.getX(), e.getY()));
|
263 |
this.mouseDragged(e);
|
264 |
return false; |
265 |
} |
266 |
return true; |
267 |
} |
268 |
|
269 |
/**
|
270 |
* Inicializamos el punto arrastrado a un valor fuera del array
|
271 |
*/
|
272 |
public boolean mouseReleased(MouseEvent e) { |
273 |
pointDragged = -1;
|
274 |
canvas.repaint(); |
275 |
return true; |
276 |
} |
277 |
|
278 |
/**
|
279 |
* Cuando se ha pinchado un punto y se arrastra se define aqu? su comportamiento.
|
280 |
*/
|
281 |
public boolean mouseDragged(MouseEvent e) { |
282 |
if (pointDragged >= 0) { |
283 |
canvas.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR)); |
284 |
int minX = canvas.getCanvasMinX();
|
285 |
int minY = canvas.getCanvasMinY();
|
286 |
int maxX = canvas.getCanvasMaxX();
|
287 |
int maxY = canvas.getCanvasMaxY();
|
288 |
|
289 |
// Controlamos que no se salga de los l?mites
|
290 |
int x = Math.min(Math.max(e.getX(), minX), maxX); |
291 |
int y = Math.min(Math.max(e.getY(), minY), maxY); |
292 |
Square point = ((Square) listSquare.get(pointDragged)); |
293 |
|
294 |
try {
|
295 |
// El primer punto no se desplaza en X
|
296 |
if (pointDragged == 0) { |
297 |
point.setPosition(minX, y); |
298 |
return false; |
299 |
} |
300 |
// El ?ltimo punto no se desplaza en X
|
301 |
if (pointDragged == (listSquare.size() - 1)) { |
302 |
point.setPosition(maxX, y); |
303 |
return false; |
304 |
} |
305 |
|
306 |
// Puntos centrales
|
307 |
point.setPosition(x, y); |
308 |
|
309 |
// Arrastra a los de abajo si la X es menor que los inferiores
|
310 |
for (int i = 0; i < pointDragged; i++) { |
311 |
Square lowPoint = ((Square) listSquare.get(i)); |
312 |
if (lowPoint.getPixelX() >= x) {
|
313 |
lowPoint.setPosition(x, lowPoint.getPixelY()); |
314 |
for (int j = i + 1; listSquare.get(j) != point;) { |
315 |
listSquare.remove(j); |
316 |
pointDragged--; |
317 |
} |
318 |
break;
|
319 |
} |
320 |
} |
321 |
|
322 |
// Arrastra a los de arriba si la X es mayor que los superiores
|
323 |
for (int i = listSquare.size() - 1; i > pointDragged; i--) { |
324 |
Square upperPoint = ((Square) listSquare.get(i)); |
325 |
if (upperPoint.getPixelX() <= x) {
|
326 |
upperPoint.setPosition(x, upperPoint.getPixelY()); |
327 |
for (int j = i - 1; listSquare.get(j) != point;) { |
328 |
listSquare.remove(j); |
329 |
j--; |
330 |
} |
331 |
break;
|
332 |
} |
333 |
} |
334 |
} finally {
|
335 |
// Siempre repintamos
|
336 |
canvas.repaint(); |
337 |
} |
338 |
return false; |
339 |
} |
340 |
return true; |
341 |
} |
342 |
|
343 |
/*
|
344 |
* (non-Javadoc)
|
345 |
* @see org.gvsig.raster.beans.canvas.DrawableElement#mouseMoved(java.awt.event.MouseEvent)
|
346 |
*/
|
347 |
public boolean mouseMoved(MouseEvent e) { |
348 |
for (int i = 0; i < listSquare.size(); i++) { |
349 |
if (((Square)listSquare.get(i)).isInside(e.getPoint())) {
|
350 |
canvas.setCursor(new Cursor(Cursor.MOVE_CURSOR)); |
351 |
return false; |
352 |
} |
353 |
} |
354 |
return true; |
355 |
} |
356 |
} |