RoundButtonFilterpublic class RoundButtonFilter extends ButtonFilter | An extensible ImageMap applet class.
The active areas on the image are controlled by ImageArea classes
that can be dynamically loaded over the net. |
| Fields Summary |
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| int | Xcenter | | int | Ycenter | | int | Yradsq | | int | innerW | | int | innerH | | int | Yrad2sq |
| Constructors Summary |
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public RoundButtonFilter(boolean press, int p, int b, int w, int h)
super(press, p, b, w, h);
Xcenter = w/2;
Ycenter = h/2;
Yradsq = h * h / 4;
innerW = w - border * 2;
innerH = h - border * 2;
Yrad2sq = innerH * innerH / 4;
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| Methods Summary |
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| public void | buttonRanges(int y, int[] ranges)
int yrel = Math.abs(Ycenter - y);
int xrel = (int) (Math.sqrt(Yradsq - yrel * yrel) * width / height);
ranges[0] = 0;
ranges[1] = Xcenter - xrel;
ranges[6] = Xcenter + xrel;
ranges[7] = width;
ranges[8] = ranges[9] = y;
if (y < border) {
ranges[2] = ranges[3] = ranges[4] = Xcenter;
ranges[5] = ranges[6];
} else if (y + border >= height) {
ranges[2] = ranges[1];
ranges[3] = ranges[4] = ranges[5] = Xcenter;
} else {
int xrel2 = (int) (Math.sqrt(Yrad2sq - yrel * yrel)
* innerW / innerH);
ranges[3] = Xcenter - xrel2;
ranges[4] = Xcenter + xrel2;
if (y < Ycenter) {
ranges[2] = ranges[3];
ranges[5] = ranges[6];
} else {
ranges[2] = ranges[1];
ranges[5] = ranges[4];
}
}
| | public int | filterRGB(int x, int y, int rgb)
boolean brighter;
int percent;
int i;
int xrel, yrel;
int ranges[] = getRanges(y);
for (i = 0; i < 7; i++) {
if (x >= ranges[i] && x < ranges[i+1]) {
break;
}
}
switch (i) {
default:
case 0:
case 6:
return rgb & 0x00ffffff;
case 1:
brighter = !pressed;
percent = defpercent;
break;
case 5:
brighter = pressed;
percent = defpercent;
break;
case 2:
yrel = y - Ycenter;
xrel = Xcenter - x;
percent = (int) (yrel * defpercent * 2 /
Math.sqrt(yrel * yrel + xrel * xrel))
- defpercent;
if (!pressed) {
percent = -percent;
}
if (percent == 0) {
return rgb;
} else if (percent < 0) {
percent = -percent;
brighter = false;
} else {
brighter = true;
}
break;
case 4:
yrel = Ycenter - y;
xrel = x - Xcenter;
percent = (int) (yrel * defpercent * 2 /
Math.sqrt(yrel * yrel + xrel * xrel))
- defpercent;
if (pressed) {
percent = -percent;
}
if (percent == 0) {
return rgb;
} else if (percent < 0) {
percent = -percent;
brighter = false;
} else {
brighter = true;
}
break;
case 3:
if (!pressed) {
return rgb & 0x00ffffff;
}
brighter = false;
percent = defpercent;
break;
}
return filterRGB(rgb, brighter, percent);
| | public boolean | inside(int x, int y)
int yrel = Math.abs(Ycenter - y);
int xrel = (int) (Math.sqrt(Yradsq - yrel * yrel) * width / height);
return (x >= Xcenter - xrel && x < Xcenter + xrel);
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