Mercurial > hg > ristipolku

annotate game/IDMButton.java @ 64:bca0112851d6

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Only load button graphics once.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 25 Feb 2011 07:27:18 +0200
parents f81f76458b92
children b586ce4f6d97
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1 /*
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2 * Ristipolku IDM button widget
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3 * (C) Copyright 2011 Matti 'ccr' Hämäläinen <ccr@tnsp.org>
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4 */
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5 package game;
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6
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7 import java.awt.*;
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8 import java.awt.event.*;
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9 import java.awt.image.*;
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10 import java.awt.geom.*;
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11 import javax.imageio.*;
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12 import java.io.*;
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13
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14
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15 public class IDMButton extends IDMWidget
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16 {
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17 enum State { FOCUSED, PRESSED, NORMAL }
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18 State state;
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19 static BufferedImage imgUp, imgPressed;
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20 Font font;
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21 FontMetrics metrics;
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22 String text;
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23 boolean active;
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24
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25 public IDMButton(IDMPoint pos, int keyCode, Font font, String text)
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26 {
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27 loadImages();
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28 this.pos = pos;
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29 this.font = font;
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30 this.keyCode = keyCode;
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31 this.text = text;
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32 state = State.NORMAL;
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33 active = false;
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34 }
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35
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36 public IDMButton(float x, float y, int keyCode, Font font, String text)
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37 {
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38 this(new IDMPoint(x, y), keyCode, font, text);
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39 }
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40
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41 private static void loadImages()
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42 {
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43 if (imgUp != null && imgPressed != null)
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44 return;
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45
49
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46 try
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47 {
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48 ResourceLoader res = new ResourceLoader("graphics/button1_up.png");
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49 imgUp = ImageIO.read(res.getStream());
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50
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51 res = new ResourceLoader("graphics/button1_down.png");
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52 imgPressed = ImageIO.read(res.getStream());
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53 }
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54 catch (IOException e)
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55 {
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56 System.out.print(e.getMessage());
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57 }
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58 }
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59
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60 public void paint(Graphics2D g)
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61 {
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62 BufferedImage img;
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63 int xoffs, yoffs;
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64
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65 if (state == State.PRESSED)
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66 {
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67 img = imgPressed;
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68 xoffs = yoffs = 5;
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69 }
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70 else
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71 {
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72 xoffs = yoffs = 0;
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73 img = imgUp;
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74 }
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75
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76 if (metrics == null)
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77 metrics = g.getFontMetrics(font);
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78
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79 int textWidth = metrics.stringWidth(text);
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80 g.drawImage(img, getScaledX() + xoffs, getScaledY() + yoffs, null);
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81
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82 g.setFont(font);
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83 g.setPaint(Color.black);
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84 g.drawString(text,
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85 getScaledX() + xoffs * 2 + (img.getWidth() - textWidth) / 2,
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86 getScaledY() + yoffs * 2 + img.getHeight() / 2);
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87 }
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88
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89 public boolean contains(Point where)
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90 {
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91 return (where.x >= getScaledX() && where.y >= getScaledY() &&
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92 where.x < getScaledX() + imgUp.getWidth() &&
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93 where.y < getScaledY() + imgUp.getHeight());
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94 }
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95
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96 public void mousePressed(MouseEvent e)
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97 {
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98 state = State.PRESSED;
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99 active = true;
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100 }
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101
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102 public void mouseReleased(MouseEvent e)
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103 {
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104 super.mouseReleased(e);
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105 state = State.NORMAL;
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106 active = false;
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107 }
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108
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109 public void mouseEntered(MouseEvent e)
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110 {
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111 if (active)
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112 state = State.PRESSED;
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113 }
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114
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115 public void mouseExited(MouseEvent e)
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116 {
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117 if (active)
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118 state = State.NORMAL;
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119 }
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120 }