private void TargetImage_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            var position = e.GetPosition(TargetImage);

            _drawStartPoint.X = (int)Math.Ceiling(position.X);
            _drawStartPoint.Y = (int)Math.Ceiling(position.Y);
            if (_drawStartPoint.X > 0)
            {
                _drawStartPoint.X--;
            }
            if (_drawStartPoint.Y > 0)
            {
                _drawStartPoint.Y--;
            }
            if (_drawingTool == DrawingTool.TextTool)
            {
                InsertTextToImage();
                return;
            }
            if (_drawingTool == DrawingTool.PickerTool)
            {
                DrawingInfo.CurrentColor    = System.Windows.Media.Color.FromArgb(255, _pickedColor.R, _pickedColor.G, _pickedColor.B);
                DrawingInfo.LeftSliderValue = _pickedColor.A;
                return;
            }
            _mouseCaptured = TargetImage.CaptureMouse();
            if (_drawingTool == DrawingTool.PenTool || _drawingTool == DrawingTool.EraserTool)
            {
                _linePoints.Clear();
                _linePoints.Add(new Point(_drawStartPoint.X, _drawStartPoint.Y));
                TargetImage_MouseMove(sender, e);//画点
            }
        }
Exemple #2
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        private void TargetImage_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (e.LeftButton != MouseButtonState.Pressed)
            {
                return;
            }
            var position = e.GetPosition(TargetImage);
            var x        = (int)position.X;
            var y        = (int)position.Y;

            _startPoint.X   = x;
            _startPoint.Y   = y;
            CropRect.Width  = 0;
            CropRect.Height = 0;

            TopValueLbl.Content    = 0;
            LeftValueLbl.Content   = 0;
            WidthValueLbl.Content  = 0;
            HeightValueLbl.Content = 0;

            TargetImage.CaptureMouse();
            _isMousePressed = true;
        }