在 wpf C# 中的图像内的特定坐标中设置 TextBlock

Question

我遇到了问题。我可以从 2 点计算距离。我想在 Draw Line 之后设置 TextBlock 。请注意，我没有使用任何 Graphics 属性来写 inside image 。我使用 TextBlock 因为那不是写在 image 里面的。这是我的 XAML 代码 ..

 <Canvas Margin="10" IsEnabled="{Binding IsEnableCanvas}"  Visibility="{Binding Path=ISCanvasVisible, Converter={StaticResource Converter}}">
                <!--<Canvas Margin="10,10,0,10" IsEnabled="{Binding IsEnableCanvas}" Background="Gray"  Visibility="{Binding Path=ISCanvasVisible, Converter={StaticResource Converter}}" HorizontalAlignment="Left" Width="150"  >-->
                <Image Source="{Binding DIIMG_For_Folder}"    cal:Message.Attach="[Event MouseDown] = [Action MDownCalCulateDistance_Right($source, $eventArgs)];
                [Event MouseUp] = [Action MUpCalCulateDistance_Right($source, $eventArgs)];
                [Event MouseMove] = [Action MMoveCalCulateDistance_Right($source, $eventArgs)]" Stretch="Uniform" />
                <Line Visibility="{Binding Path=ISLineDistanceVisible, Converter={StaticResource Converter}}"  IsHitTestVisible="False"  X1="{Binding FirstPoint_Right.X}" Y1="{Binding FirstPoint_Right.Y}"
                  X2="{Binding SecondPoint_Right.X}" Y2="{Binding SecondPoint_Right.Y}"
                  Stroke="Red" StrokeThickness="3">
                </Line>
                <TextBlock Text="{Binding Path=DisTanceInMM_Right, Mode=OneWay}" Margin="15" FontSize="20" Foreground="Red" ></TextBlock>
            </Canvas>

如您所见，我使用属性连接两点并显示直线。但是您也看到了我设置的固定点即 Margin 15 的 TextBlock。我想在 secondpoint.x 和 Secondpoint.Y 之后画线时设置。这是我的 C# 代码

            try
            {
                if (_firstPointRight.X == 0 && _firstPointRight.Y == 0)
                {
                    System.Windows.Point px1 = e.GetPosition((System.Windows.Controls.Image)sender);

                    _firstPointRight = px1;
                }
                else
                //if (_secondPointRight.X == 0 && _secondPointRight.Y == 0)
                {
                    System.Windows.Point px2 = e.GetPosition((System.Windows.Controls.Image)sender);
                    _secondPointRight = px2;
                    var geometry = new FrameGeometry(DicomDataSet);
                    var patientCoord1 = geometry.TransformImagePointToPatient(new Point2(Convert.ToInt32(_firstPointRight.X), Convert.ToInt32(_firstPointRight.Y)));
                    var patientCoord2 = geometry.TransformImagePointToPatient(new Point2(Convert.ToInt32(_secondPointRight.X), Convert.ToInt32(_secondPointRight.Y)));
                    double distanceInMM = patientCoord1.Distance(patientCoord2);
                    DisTanceInMM_Right = Convert.ToDouble(distanceInMM.ToString("N3"));
                }
            }
            catch (DicomDataException)
            {
                MessageBox.Show("This Dicom File Not Suported", "Alert", MessageBoxButton.OK, MessageBoxImage.Error);
            }

DisTanceInMM_Righ 是属性我设置两点之间的距离并使用 TextBlock 显示距离。我想设置在Secondpoint之后可以吗。我不想用作 Margin 属性或 Fixed place TextBlock 使用。请注意我使用 Caliburn.Micro Framework .

Answer 1

据我了解，您希望 TextBlock 出现在第二行点之后。如果是这样，您可以在 TextBlock 上使用 Canvas.Left 和 Canvas.Top 附加属性：

<TextBlock Canvas.Left="{Binding SecondPoint_Right.X}" Canvas.Top="{Binding SecondPoint_Right.Y}" Text="{Binding Path=DisTanceInMM_Right, Mode=OneWay}" FontSize="20" Foreground="Red"></TextBlock>

在 wpf C# 中的图像内的特定坐标中设置 TextBlock

TextBlock Set in a specific Co ordinate inside an image in wpf C#

c#

wpf

image

caliburn.micro