@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// calculate the left and right values
float right = this.getWidth() - this.getPaddingRight();
float left = right - this.getWidth() + this.getPaddingLeft();
float height = this.getHeight() - this.getPaddingTop() - this.getPaddingBottom();
float radius = height / 2; // 圓半徑
oval.set(left, 0, right, height);
if (this.isChecked()) {
paint.setColor(Color.parseColor("#4B96C2"));
// paint.setColor(Color.parseColor("#5a7fc0"));
canvas.drawRoundRect(oval, radius, radius, paint);
paint.setColor(Color.WHITE);
canvas.drawCircle(right - radius, radius, radius - SWITCH_BOUND, paint);
} else {
paint.setColor(Color.GRAY);
canvas.drawRoundRect(oval, radius, radius, paint);
paint.setColor(Color.WHITE);
canvas.drawCircle(left + radius, radius, radius - SWITCH_BOUND, paint);
}
canvas.save();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
// Draw the switch
int switchLeft = mSwitchLeft;
int switchTop = mSwitchTop;
int switchRight = mSwitchRight;
int switchBottom = mSwitchBottom;
mTrackDrawable.setBounds(switchLeft, switchTop, switchRight, switchBottom);
mTrackDrawable.draw(canvas);
canvas.save();
mTrackDrawable.getPadding(mTempRect);
int switchInnerLeft = switchLeft + mTempRect.left;
int switchInnerTop = switchTop + mTempRect.top;
int switchInnerRight = switchRight - mTempRect.right;
int switchInnerBottom = switchBottom - mTempRect.bottom;
canvas.clipRect(switchInnerLeft, switchTop, switchInnerRight, switchBottom);
mThumbDrawable.getPadding(mTempRect);
final int thumbPos = (int) (mThumbPosition + 0.5f);
int thumbLeft = switchInnerLeft - mTempRect.left + thumbPos;
int thumbRight = switchInnerLeft + thumbPos + mThumbWidth + mTempRect.right;
mThumbDrawable.setBounds(thumbLeft, switchTop, thumbRight, switchBottom);
mThumbDrawable.draw(canvas);
// mTextColors should not be null, but just in case
if (mTextColors != null) {
mTextPaint.setColor(
mTextColors.getColorForState(getDrawableState(), mTextColors.getDefaultColor()));
}
mTextPaint.drawableState = getDrawableState();
Layout switchText = getTargetCheckedState() ? mOnLayout : mOffLayout;
if (switchText != null) {
canvas.translate(
(thumbLeft + thumbRight) / 2 - switchText.getWidth() / 2,
(switchInnerTop + switchInnerBottom) / 2 - switchText.getHeight() / 2);
switchText.draw(canvas);
}
canvas.restore();
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
final Rect padding = mTempRect;
final Drawable trackDrawable = mTrackDrawable;
if (trackDrawable != null) {
trackDrawable.getPadding(padding);
} else {
padding.setEmpty();
}
final int switchTop = mSwitchTop;
final int switchBottom = mSwitchBottom;
final int switchInnerTop = switchTop + padding.top;
final int switchInnerBottom = switchBottom - padding.bottom;
final Drawable thumbDrawable = mThumbDrawable;
if (trackDrawable != null) {
if (mSplitTrack && thumbDrawable != null) {
final Insets insets = Insets.NONE;
thumbDrawable.copyBounds(padding);
padding.left += insets.left;
padding.right -= insets.right;
final int saveCount = canvas.save();
canvas.clipRect(padding, Region.Op.DIFFERENCE);
trackDrawable.draw(canvas);
canvas.restoreToCount(saveCount);
} else {
trackDrawable.draw(canvas);
}
}
final int saveCount = canvas.save();
if (thumbDrawable != null) {
thumbDrawable.draw(canvas);
}
canvas.restoreToCount(saveCount);
}
