void AdjustTextBounds(NMapView mapView)
{
// Determine the screen coordinates of the selected MapLocation
mapView.MapProjection.ToPixels(MOverlayItem.PointInUtmk, MTempPoint);
var title = MOverlayItem.Title;
mTextPaint.GetTextBounds(title, 0, title.Length, MTempRect);
// Setup the callout with the appropriate size & location
MTempRectF.Set(MTempRect);
MTempRectF.Inset(-CALLOUT_TEXT_PADDING_X, -CALLOUT_TEXT_PADDING_Y);
mOffsetX = MTempPoint.X - MTempRect.Width() / 2;
mOffsetY = MTempPoint.Y - MTempRect.Height() - MItemBounds.Height() - CALLOUT_TEXT_PADDING_Y;
MTempRectF.Offset(mOffsetX, mOffsetY);
}
void AdjustTextBounds(NMapView mapView)
{
// First determine the screen coordinates of the selected MapLocation
mapView.MapProjection.ToPixels(MOverlayItem.PointInUtmk, MTempPoint);
int mapViewWidth = mapView.MapController.ViewFrameVisibleWidth;
if (mTitleTruncated == null || mWidthTitleTruncated != mapViewWidth)
{
mWidthTitleTruncated = mapViewWidth;
float maxWidth = mWidthTitleTruncated - 2 * mMarginX - 2 * mPaddingX;
if (DEBUG)
{
Log.Info(LOG_TAG, "adjustTextBounds: maxWidth=" + maxWidth + ", mMarginX=" + mMarginX + ", mPaddingX="
+ mPaddingX);
}
if (mDrawableRightButton != null)
{
maxWidth -= mPaddingX + mCalloutRightButtonWidth;
}
if (mTailText != null)
{
mTextPaint.GetTextBounds(mTailText, 0, mTailText.Length, MTempRect);
mTailTextWidth = MTempRect.Width();
maxWidth -= mTailGapX + mTailTextWidth;
}
var title = TextUtils.Ellipsize(MOverlayItem.Title, mTextPaint, maxWidth,
TextUtils.TruncateAt.End).ToString();
mTitleTruncated = title;
if (DEBUG)
{
Log.Info(LOG_TAG, "adjustTextBounds: mTitleTruncated=" + mTitleTruncated + ", length="
+ mTitleTruncated.Length);
}
}
mTextPaint.GetTextBounds(mTitleTruncated, 0, mTitleTruncated.Length, MTempRect);
if (mDrawableRightButton != null)
{
MTempRect.Right += (int)(mPaddingX + mCalloutRightButtonWidth);
}
if (mTailText != null)
{
MTempRect.Right += (int)(mTailGapX + mTailTextWidth);
}
if (DEBUG)
{
Log.Info(LOG_TAG, "adjustTextBounds: mTempRect.width=" + MTempRect.Width() + ", mTempRect.height="
+ MTempRect.Height());
}
// Setup the callout with the right size & location
MTempRectF.Set(MTempRect);
var dy = (mBackgroundHeight - MTempRect.Height()) / 2;
MTempRectF.Inset(-mPaddingX, -dy);
//mTempRectF.inset(-mPaddingX, -mPaddingY);
// set minimum size
if (MTempRectF.Width() < mMinimumWidth)
{
var dx = (mMinimumWidth - MTempRectF.Width()) / 2;
MTempRectF.Inset(-dx, 0);
}
// set position
float left = MTempPoint.X - (int)(MTempRectF.Width() * MOverlayItem.AnchorXRatio);
float top = MTempPoint.Y - (int)(MItemBounds.Height() * MOverlayItem.AnchorYRatio) - mItemGapY - mTotalHeight;
MTempRectF.Set(left, top, left + MTempRectF.Width(), top + MTempRectF.Height());
}
protected override void DrawCallout(Canvas canvas, NMapView mapView, bool shadow, long when)
{
AdjustTextBounds(mapView);
StepAnimations(canvas, mapView, when);
DrawBackground(canvas);
float left, top;
// draw title
mOffsetX = MTempPoint.X - MTempRect.Width() / 2;
mOffsetX -= mPaddingOffset;
mOffsetY = MTempRectF.Top + mPaddingY + mTextPaint.TextSize + mTitleOffsetY;
canvas.DrawText(mTitleTruncated, mOffsetX, mOffsetY, mTextPaint);
// draw right button
if (mDrawableRightButton != null)
{
left = MTempRectF.Right - mPaddingX - mCalloutRightButtonWidth;
top = MTempRectF.Top + (mBackgroundHeight - mCalloutRightButtonHeight) / 2;
// Use background drawables depends on current state
mRightButtonRect.Left = (int)(left + 0.5F);
mRightButtonRect.Top = (int)(top + 0.5F);
mRightButtonRect.Right = (int)(left + mCalloutRightButtonWidth + 0.5F);
mRightButtonRect.Bottom = (int)(top + mCalloutRightButtonHeight + 0.5F);
int itemState = base.GetItemState(0);
Drawable drawable = GetDrawable(0, itemState);
if (drawable != null)
{
drawable.Bounds = mRightButtonRect;
drawable.Draw(canvas);
}
if (mRightButtonText != null)
{
mTextPaint.GetTextBounds(mRightButtonText, 0, mRightButtonText.Length, MTempRect);
left = mRightButtonRect.Left + (mCalloutRightButtonWidth - MTempRect.Width()) / 2;
top = mRightButtonRect.Top + (mCalloutRightButtonHeight - MTempRect.Height()) / 2 + MTempRect.Height() + mTitleOffsetY;
canvas.DrawText(mRightButtonText, left, top, mTextPaint);
}
}
// draw tail text
if (mTailText != null)
{
if (mRightButtonRect != null)
{
left = mRightButtonRect.Left;
}
else
{
left = MTempRectF.Right;
}
left -= mPaddingX + mTailTextWidth;
top = mOffsetY;
canvas.DrawText(mTailText, left, top, mTextPaint);
}
}