@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawColor(backgroundColor);
if (colorWheel != null) canvas.drawBitmap(colorWheel, 0, 0, null);
if (currentColorCircle != null) {
float maxRadius =
canvas.getWidth() / 2f - STROKE_RATIO * (1f + ColorWheelRenderer.GAP_PERCENTAGE);
float size = maxRadius / density / 2;
colorWheelFill.setColor(
Color.HSVToColor(currentColorCircle.getHsvWithLightness(this.lightness)));
colorWheelFill.setAlpha((int) (alpha * 0xff));
canvas.drawCircle(
currentColorCircle.getX(),
currentColorCircle.getY(),
size * STROKE_RATIO,
selectorStroke1);
canvas.drawCircle(
currentColorCircle.getX(),
currentColorCircle.getY(),
size * (1 + (STROKE_RATIO - 1) / 2),
selectorStroke2);
canvas.drawCircle(
currentColorCircle.getX(), currentColorCircle.getY(), size, alphaPatternPaint);
canvas.drawCircle(currentColorCircle.getX(), currentColorCircle.getY(), size, colorWheelFill);
}
}
private ColorCircle findNearestByPosition(float x, float y) {
ColorCircle near = null;
double minDist = Double.MAX_VALUE;
for (ColorCircle colorCircle : renderer.getColorCircleList()) {
double dist = colorCircle.sqDist(x, y);
if (minDist > dist) {
minDist = dist;
near = colorCircle;
}
}
return near;
}
public void setLightness(float lightness) {
this.lightness = lightness;
this.initialColor =
Color.HSVToColor(
Utils.alphaValueAsInt(this.alpha), currentColorCircle.getHsvWithLightness(lightness));
if (this.colorEdit != null)
this.colorEdit.setText("#" + Integer.toHexString(this.initialColor).toUpperCase());
if (this.alphaSlider != null && this.initialColor != null)
this.alphaSlider.setColor(this.initialColor);
updateColorWheel();
invalidate();
}
private ColorCircle findNearestByColor(int color) {
float[] hsv = new float[3];
Color.colorToHSV(color, hsv);
ColorCircle near = null;
double minDiff = Double.MAX_VALUE;
double x = hsv[1] * Math.cos(hsv[0] * Math.PI / 180);
double y = hsv[1] * Math.sin(hsv[0] * Math.PI / 180);
for (ColorCircle colorCircle : renderer.getColorCircleList()) {
float[] hsv1 = colorCircle.getHsv();
double x1 = hsv1[1] * Math.cos(hsv1[0] * Math.PI / 180);
double y1 = hsv1[1] * Math.sin(hsv1[0] * Math.PI / 180);
double dx = x - x1;
double dy = y - y1;
double dist = dx * dx + dy * dy;
if (dist < minDiff) {
minDiff = dist;
near = colorCircle;
}
}
return near;
}
public int getSelectedColor() {
int color = 0;
if (currentColorCircle != null)
color = Color.HSVToColor(currentColorCircle.getHsvWithLightness(this.lightness));
return Utils.adjustAlpha(this.alpha, color);
}
