Swing Hacks

Add Windows Resize Icons #35

Chapter 5, Windows, Dialogs, and Frames

|

185

HACK

Next, paint the white squares: one in the first row, two in the second, and

three in the third. Notice that the white squares are offset by one pixel

because the column and row variables (

firstRow

,

secondRow

, etc.) reference

the gray squares. These squares provide the 3D effect.

//first row

draw3dSquare(g, firstColumn+1, thirdRow+1);

//second row

draw3dSquare(g, secondColumn+1, secondRow+1);

draw3dSquare(g, secondColumn+1, thirdRow+1);

//third row

draw3dSquare(g, thirdColumn+1, firstRow+1);

draw3dSquare(g, thirdColumn+1, secondRow+1);

draw3dSquare(g, thirdColumn+1, thirdRow+1);

Finally, paint the gray squares on top of the white squares:

//first row

drawSquare(g, firstColumn, thirdRow);

//second row

drawSquare(g, secondColumn, secondRow);

drawSquare(g, secondColumn, thirdRow);

//third row

drawSquare(g, thirdColumn, firstRow);

drawSquare(g, thirdColumn, secondRow);

drawSquare(g, thirdColumn, thirdRow);

The Office Icon

Figure 5-5 shows the MS Office corner icon in detail.

Figure 5-5. The Windows MS Office icon zoomed in

186

|

Chapter 5, Windows, Dialogs, and Frames

#35 Add Windows Resize Icons

HACK

This icon is easier—it’s just a couple of straight lines. Also, it’s 13 × 13 pix-

els, which is bigger than the last icon. So, start with the trivial size methods:

private static final int WIDTH = 13;

private static final int HEIGHT = 13;

public int getIconHeight( ) {

return WIDTH;

}

public int getIconWidth( ) {

return HEIGHT;

}

The paintIcon( ) method is also pretty straightforward. Start by painting the

three white lines, and follow up with the dark gray lines. Here’s the code:

public void paintIcon(Component c, Graphics g, int x, int y) {

g.setColor(WHITE_LINE_COLOR);

g.drawLine(0,12, 12,0);

g.drawLine(5,12, 12,5);

g.drawLine(10,12, 12,10);

g.setColor(GRAY_LINE_COLOR);

g.drawLine(1,12, 12,1);

g.drawLine(2,12, 12,2);

g.drawLine(3,12, 12,3);

g.drawLine(6,12, 12,6);

g.drawLine(7,12, 12,7);

g.drawLine(8,12, 12,8);

g.drawLine(11,12, 12,11);

g.drawLine(12,12, 12,12);

}

Notice you don’t have to paint the light gray color because it’s actually the

panel background color. Any area you don’t explicitly paint over picks up

the background color, which is exactly what you want here.

These icons are approximations; some things will be different

between applications and systems. They were taken directly,

pixel by pixel, from Windows Explorer and Microsoft Office

2000 running on Windows XP Professional. Different applica-

tions are slightly different, even on the same version of Win-

dows. Double check platforms you are deploying to and make

sure the colors are correct. Meanwhile, it’s still a really good

working icon, even if a couple of pixels are off by a few shades.

—Jonathan Simon