public SampleView(Context context) {
super(context);
setFocusable(true);
mPath = new Path();
mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
mRect = new Rect(0, 0, 120, 120);
mDrawable =
new GradientDrawable(
GradientDrawable.Orientation.TL_BR, new int[] {0xFFFF0000, 0xFF00FF00, 0xFF0000FF});
mDrawable.setShape(GradientDrawable.RECTANGLE);
mDrawable.setGradientRadius((float) (Math.sqrt(2) * 60));
}
static void setCornerRadii(GradientDrawable drawable, float r0, float r1, float r2, float r3) {
drawable.setCornerRadii(
new float[] {
r0, r0, r1, r1,
r2, r2, r3, r3
});
}
@Override
protected void onBindDialogView(View view) {
final ZLColor color = myOption.getValue();
myRedSlider = createSlider(view, R.id.color_red, color.Red, "red");
myGreenSlider = createSlider(view, R.id.color_green, color.Green, "green");
myBlueSlider = createSlider(view, R.id.color_blue, color.Blue, "blue");
final View colorBox = view.findViewById(R.id.color_box);
colorBox.setBackgroundDrawable(myPreviewDrawable);
myPreviewDrawable.setCornerRadius(7);
myPreviewDrawable.setColor(ZLAndroidColorUtil.rgb(color));
final SeekBar.OnSeekBarChangeListener listener =
new SeekBar.OnSeekBarChangeListener() {
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
myPreviewDrawable.setColor(
Color.rgb(
myRedSlider.getProgress(),
myGreenSlider.getProgress(),
myBlueSlider.getProgress()));
myPreviewDrawable.invalidateSelf();
}
public void onStartTrackingTouch(SeekBar seekBar) {}
public void onStopTrackingTouch(SeekBar seekBar) {
myPreviewDrawable.setColor(
Color.rgb(
myRedSlider.getProgress(),
myGreenSlider.getProgress(),
myBlueSlider.getProgress()));
myPreviewDrawable.invalidateSelf();
}
};
myRedSlider.setOnSeekBarChangeListener(listener);
myGreenSlider.setOnSeekBarChangeListener(listener);
myBlueSlider.setOnSeekBarChangeListener(listener);
super.onBindDialogView(view);
}
@Override
protected void onDraw(Canvas canvas) {
mDrawable.setBounds(mRect);
float r = 16;
canvas.save();
canvas.translate(10, 10);
mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
setCornerRadii(mDrawable, r, r, 0, 0);
mDrawable.draw(canvas);
canvas.restore();
canvas.save();
canvas.translate(10 + mRect.width() + 10, 10);
mDrawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);
setCornerRadii(mDrawable, 0, 0, r, r);
mDrawable.draw(canvas);
canvas.restore();
canvas.translate(0, mRect.height() + 10);
canvas.save();
canvas.translate(10, 10);
mDrawable.setGradientType(GradientDrawable.SWEEP_GRADIENT);
setCornerRadii(mDrawable, 0, r, r, 0);
mDrawable.draw(canvas);
canvas.restore();
canvas.save();
canvas.translate(10 + mRect.width() + 10, 10);
mDrawable.setGradientType(GradientDrawable.LINEAR_GRADIENT);
setCornerRadii(mDrawable, r, 0, 0, r);
mDrawable.draw(canvas);
canvas.restore();
canvas.translate(0, mRect.height() + 10);
canvas.save();
canvas.translate(10, 10);
mDrawable.setGradientType(GradientDrawable.RADIAL_GRADIENT);
setCornerRadii(mDrawable, r, 0, r, 0);
mDrawable.draw(canvas);
canvas.restore();
canvas.save();
canvas.translate(10 + mRect.width() + 10, 10);
mDrawable.setGradientType(GradientDrawable.SWEEP_GRADIENT);
setCornerRadii(mDrawable, 0, r, 0, r);
mDrawable.draw(canvas);
canvas.restore();
}
