我正在做一个家庭作业的ms绘画风格程序。在这个家庭作业中,你应该能够右击一个形状并在屏幕上移动它。填充的形状可以在形状内部的任何地方右键单击,其中未填充的形状应该右键单击并在形状的边界上进行选择。拖放填充的形状与未填充的形状[作业]
我遇到的问题是,当我最初启动程序时,绘制和未填充的形状,并试图拖动它,它会拖动,但一旦我再次放下它,它的行为是正确的,并成为不可复制的,所有未来未填充的形状相应地起作用
TLDR:我希望所有填充的形状都是可拖动的,并且所有未填充的形状都是不可裁剪的。如果它是第一个放置的形状,未填充的形状(出于某种原因)可拖动。拖曳未填充的形状后,它的行为正确。
下面是相关的代码:
private boolean isFilled = false;
private JCheckBox fill = new JCheckBox("Filled");
private int indexToMove;
涂料成份
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(Color.WHITE);
g.clearRect(0, 0, getWidth(), getHeight());
for (int i = 0; i < shapes.size(); i++) {
shapes.get(i).draw(g);
}
repaint();
}
的actionPerformed我补扣
else if (e.getSource() == fill) {
if (fill.isSelected()) {
isFilled = true;
} else {
isFilled = false;
}
}
这是我开始拖放
部分鼠标的时候按住
public void mousePressed(MouseEvent e) {
if (SwingUtilities.isRightMouseButton(e)) {
for (int i = 0; i < shapes.size(); i++) {
if (shapes.get(i).isSelected(e.getX(), e.getY())) {
System.out.println("Shape contained in: " + i);
indexToMove = i;
}
}
}
}
鼠标拖动
public void mouseDragged(MouseEvent e) {
if (SwingUtilities.isRightMouseButton(e)) {
if (indexToMove >= 0) {
shapes.get(indexToMove).move(e.getX(), e.getY());
}
}
}
MOUSE RELEASED
public void mouseReleased(MouseEvent e) {
if (SwingUtilities.isRightMouseButton(e)) {
indexToMove = -1;
}
}
这些是相关SHAPE类代码
public class MyRectangle extends Rectangle implements MyShape {
private Color color;
private boolean filled = false;
private int x, y, dx, dy, height, width;
public MyRectangle(Color color, boolean filled, int x, int y, int endX, int endY) {
this.color = color;
this.filled = filled;
this.x = x;
this.y = y;
this.dx = endX;
this.dy = endY;
}
@Override
public void draw(Graphics g) {
...
if (!filled) {
g.drawRect(x, y, width, height);
}
if (filled) {
g.fillRect(x, y, width, height);
}
}
这是我检查它是否填充/ UNF ILLED 制出的只发生后,我拖放填充的形状ONE TIME
@Override
public boolean isSelected(int clickX, int clickY) {
boolean selected = false;
if(filled == false){
System.out.println("unfilled shape, do not move");
selected = false;
}
else if (filled == true) {
if ((clickX > x) && (clickX < dx) && (clickY > y) && (clickY < dy)) {
selected = true;
} else {
selected = false;
}
}
return selected;
}
public void move(int offsetX, int offsetY) {
int centerX = (dx + x)/2;
int centerY = (dy + y)/2;
System.out.println("CenterX: " + centerX + " CenterY: " + centerY);
if (offsetX > centerX) {
offsetX = offsetX - centerX;
x += offsetX;
dx += offsetX;
} else if (offsetX < centerX) {
offsetX = centerX - offsetX;
x -= offsetX;
dx -= offsetX;
}
if (offsetY > centerY) {
offsetY = offsetY - centerY;
y += offsetY;
dy += offsetY;
}
else if (offsetY < centerY) {
offsetY = centerY - offsetY;
y -= offsetY;
dy -= offsetY;
}
}
知道这是相当多的代码,我试图砍掉任何似乎并不相关。让我知道你是否需要看更多!