I'm learning how to develop UWP apps and I'm using Microsoft's documentation as tutorials/research.
I want to have an InkCanvas design similar to OneNote where the InkCanvas height and width can expand (as you're writing/drawing and reach the end of the window size) and can shrink (when you erase ink strokes and the extra size can decrease based on the position of the ink strokes until you get back to the original size).
I'm able to increase the InkCanvas width and height, but can't decrease when erasing ink strokes.
Here is a MainPage.xaml code:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock Text="Heading"
FontSize="36"
FontWeight="Bold"
Margin="10"
Grid.Column="0"
Grid.Row="0"/>
<Grid BorderBrush="Red"
BorderThickness="2"
Margin="10"
Grid.Column="0"
Grid.Row="1">
<ScrollViewer HorizontalScrollBarVisibility="Auto"
HorizontalScrollMode="Enabled"
VerticalScrollBarVisibility="Auto"
VerticalScrollMode="Enabled" >
<Grid BorderBrush="Blue"
BorderThickness="2"
Margin="1">
<InkCanvas Name="inkCanvas"/>
</Grid>
</ScrollViewer>
</Grid>
And the MainPage.cs code:
public MainPage()
{
this.InitializeComponent();
nkCanvas.InkPresenter.StrokeInput.StrokeEnded += adjustInkCanvasSize;
}
private async void adjustInkCanvasSize(InkStrokeInput sender, PointerEventArgs args)
{
await Task.Delay(100);
var XBound = inkCanvas.InkPresenter.StrokeContainer.BoundingRect.Bottom;
if (XBound > inkCanvas.ActualHeight - 200)
inkCanvas.Height = XBound + 200;
var YBound = inkCanvas.InkPresenter.StrokeContainer.BoundingRect.Right;
if (YBound > inkCanvas.ActualWidth - 200)
inkCanvas.Width = YBound + 200;
}
The c# code also came from another stackoverflow solution, but not able to figure out the "decrease" part.
Any help would be much appreciated. Thanks
If you want the InkCanvas control to shrink when you erase ink strokes and the extra size can decrease based on the position of the ink strokes until the original size, you need to add the InkPresenter.StrokesErased event to manage the size of the InkCanvas control. For example:
Here is a MainPage.xaml code( To facilitate testing, I added the mouse support):
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock Text="Heading"
FontSize="36"
FontWeight="Bold"
Margin="10"
Grid.Column="0"
Grid.Row="0"/>
<Grid BorderBrush="Red"
BorderThickness="2"
Margin="10"
Grid.Column="0"
Grid.Row="1">
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<InkToolbar x:Name="inkToolbar" VerticalAlignment="Top" Margin="10,0,10,0"
TargetInkCanvas="{x:Bind inkCanvas}" Grid.Row="0"/>
<ScrollViewer HorizontalScrollBarVisibility="Auto"
HorizontalScrollMode="Enabled" Grid.Row="1"
VerticalScrollBarVisibility="Auto"
VerticalScrollMode="Enabled" >
<Grid BorderBrush="Blue"
BorderThickness="2"
Margin="1">
<InkCanvas Name="inkCanvas" />
</Grid>
</ScrollViewer>
</Grid>
</Grid>
And the MainPage.cs code:
public sealed partial class MainPage : Page
{
private double originalX; //The original size
private double originalY;
private double maxX=0.0;
private double maxY=0.0;
private bool flag = true;
public MainPage()
{
this.InitializeComponent();
inkCanvas.InkPresenter.InputDeviceTypes = CoreInputDeviceTypes.Mouse | CoreInputDeviceTypes.Touch |
CoreInputDeviceTypes.Pen;
inkCanvas.InkPresenter.StrokeInput.StrokeEnded += adjustInkCanvasSize;
inkCanvas.InkPresenter.StrokesErased += InkPresenter_StrokesErased;
}
private async void InkPresenter_StrokesErased(InkPresenter sender, InkStrokesErasedEventArgs args)
{
await Task.Delay(100);
//The coordinate of the lower right corner of the erased ink stoke
var erasedInkX= args.Strokes.ElementAt(0).BoundingRect.Bottom;
var erasedInkY = args.Strokes.ElementAt(0).BoundingRect.Right;
var XBound = inkCanvas.InkPresenter.StrokeContainer.BoundingRect.Bottom;
if (erasedInkX >=maxX&&XBound < inkCanvas.ActualHeight + 100)
{
if (XBound - 100 > originalX)
inkCanvas.Height = XBound - 100;
else
inkCanvas.Height = originalX; //The size of InkCanvas shrinks to the original size.
maxX = inkCanvas.Height;
}
var YBound = inkCanvas.InkPresenter.StrokeContainer.BoundingRect.Right;
if (erasedInkY>=maxY&&YBound < inkCanvas.ActualWidth + 100)
{
if (YBound - 100 > originalY)
{
inkCanvas.Width = YBound - 100;
}
else
inkCanvas.Width = originalY;
maxY = inkCanvas.Width;
}
}
private async void adjustInkCanvasSize(InkStrokeInput sender, PointerEventArgs args)
{
await Task.Delay(100);
if(flag)
{
flag = false;
originalX = inkCanvas.ActualHeight; //Get the original size
originalY = inkCanvas.ActualWidth;
}
var XBound = inkCanvas.InkPresenter.StrokeContainer.BoundingRect.Bottom;
if (XBound > maxX)
maxX = XBound; //maxX and maxY always hold the maximum size of StrokeContainer
if (XBound > inkCanvas.ActualHeight - 200)
inkCanvas.Height = XBound + 200;
var YBound = inkCanvas.InkPresenter.StrokeContainer.BoundingRect.Right;
if (YBound > maxY)
maxY = YBound;
if (YBound > inkCanvas.ActualWidth - 200)
inkCanvas.Width = YBound + 200;
}
}
Related
I need something like this:
And I have this right now:
XAML:
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="PetCare.Client.View.Forgot.ForgotPasswordView">
<ContentPage.Content>
<Grid RowSpacing="0">
<Grid.RowDefinitions>
<RowDefinition Height="*" ></RowDefinition>
<RowDefinition Height="*" ></RowDefinition>
<RowDefinition Height="*" ></RowDefinition>
<RowDefinition Height="*" ></RowDefinition>
<RowDefinition Height="*" ></RowDefinition>
<RowDefinition Height="*" ></RowDefinition>
<RowDefinition Height="*" ></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="2*" ></ColumnDefinition>
<ColumnDefinition Width="auto" ></ColumnDefinition>
<ColumnDefinition Width="2*" ></ColumnDefinition>
</Grid.ColumnDefinitions>
<StackLayout Grid.Row="0"
Grid.Column="0"
Grid.ColumnSpan="3"
x:Name="BackgroundTop">
</StackLayout>
<Image Grid.Row="0"
Grid.Column="1"
Grid.RowSpan="2"
x:Name="Icon"/>
<StackLayout Grid.Row="2"
Grid.Column="0"
Grid.ColumnSpan="3"
Grid.RowSpan="4"
x:Name="BackgroundBot"
Spacing="0">
<Label Grid.Row="2"
Grid.Column="1"
x:Name="TextTitleLable"
/>
<StackLayout Grid.Row="3"
Grid.Column="1"
BackgroundColor="Red"
x:Name="BackgroundImage"
Spacing="0">
<Image x:Name="Phone"/>
</StackLayout>
<StackLayout Grid.Row="3"
Grid.Column="1"
BackgroundColor="Blue"
x:Name="BackgroundTextDescription"
Spacing="0">
<Label x:Name="TextDescription"></Label>
</StackLayout>
<StackLayout Grid.Row="4"
Grid.RowSpan="2"
x:Name="BackgroundInputNavigation">
<Entry x:Name="InputUser" />
<Label x:Name="ErrorMessage"/>
<Label x:Name="OtherOption"/>
</StackLayout>
</StackLayout>
<Button Grid.Row="8"
Grid.Column="1"
x:Name="BtnContinue"
Clicked="ClickedBtnContinue"/>
</Grid>
</ContentPage.Content>
</ContentPage>
C#:
//BackgrouTextndInputNavigation.
public ForgotPasswordView()
{
InitializeComponent();
NavigationPage.SetHasNavigationBar(this, false);
SetColorsApp();
SetBtnContinueProperties();
SetTextTitleLableProperties();
SetIconProperties();
SetBackgroundTopProperties();
SetBackgroundBotProperties();
SetInputUserProperties();
SetOtherOptionProperties();
SetErrorMessageProperties();
SetPhoneProperties();
SetTextDescriptionProperties();
SetBackgroundImageProperties();
SetBackgroundTextDescriptionProperties();
}
private void SetBackgroundTextDescriptionProperties()
{
BackgroundTextDescription.Orientation = StackOrientation.Horizontal;
BackgroundTextDescription.HorizontalOptions = LayoutOptions.End;
BackgroundTextDescription.VerticalOptions = LayoutOptions.Center;
}
private void SetBackgroundImageProperties()
{
BackgroundImage.Orientation = StackOrientation.Horizontal;
BackgroundImage.HorizontalOptions = LayoutOptions.Start;
BackgroundImage.VerticalOptions = LayoutOptions.Center;
}
private void SetTextDescriptionProperties()
{
Label textPhoneNumber = new Label();
textPhoneNumber.Text = "XXXXX-XX89";
textPhoneNumber.TextColor = Color.FromHex(ColorsApp.ColorAppWarning);
textPhoneNumber.FontSize = 18;
string Text = "Foi enviada uma mensagem\ncom Código de Verificação\npara o Telefone "+ textPhoneNumber.Text+ "\ncadastrado em sua conta.\nInforme este Código para\nprosseguir.".Replace("\n", System.Environment.NewLine);
TextDescription.Text = Text;
TextDescription.FontSize = 18;
TextDescription.HorizontalTextAlignment = TextAlignment.End;
TextDescription.VerticalOptions = LayoutOptions.Center;
}
private void SetPhoneProperties()
{
Phone.Source = ImageSource.FromFile("phone.png");
Phone.HorizontalOptions = LayoutOptions.Start;
Phone.VerticalOptions = LayoutOptions.Center;
Phone.HeightRequest = 110;
}
private void SetErrorMessageProperties()
{
ErrorMessage.FontAttributes = FontAttributes.Bold;
ErrorMessage.Margin = new Thickness(0, 0, 0, 30);
}
private void SetOtherOptionProperties()
{
var tap = new TapGestureRecognizer();
tap.Tapped += async (s, e) => await Navigation.PushAsync(new OtherOptionResetPasswordView());
OtherOption.Text = "Usar outra opção de verificação";
OtherOption.FontSize = 18;
OtherOption.GestureRecognizers.Add(tap);
OtherOption.TextColor = Color.FromHex(ColorsApp.ColorAppPrimary);
tap = null;
}
private void SetInputUserProperties()
{
InputUser.Placeholder = "Inserir o Código";
InputUser.Margin = new Thickness(0, 20, 0, 0);
}
private void SetBackgroundBotProperties()
{
BackgroundBot.Padding = 30;
BackgroundBot.HeightRequest = 300;
BackgroundBot.HorizontalOptions = LayoutOptions.FillAndExpand;
BackgroundBot.VerticalOptions = LayoutOptions.FillAndExpand;
}
private void SetBackgroundTopProperties()
{
BackgroundTop.BackgroundColor = Color.FromHex(ColorsApp.ColorAppThemePrimary);
BackgroundTop.HorizontalOptions = LayoutOptions.FillAndExpand;
BackgroundTop.VerticalOptions = LayoutOptions.FillAndExpand;
BackgroundTop.Padding = 10;
}
private void SetIconProperties()
{
Icon.Source = ImageSource.FromFile("smartphone.png");
Icon.HorizontalOptions = LayoutOptions.Center;
Icon.VerticalOptions = LayoutOptions.Center;
}
private void SetTextTitleLableProperties()
{
TextTitleLable.HorizontalTextAlignment = TextAlignment.Start;
TextTitleLable.VerticalTextAlignment = TextAlignment.Start;
TextTitleLable.Text = "Verificar Identidade";
TextTitleLable.FontSize = 28;
TextTitleLable.TextColor = Color.FromHex(ColorsApp.ColorAppDark);
}
private void SetBtnContinueProperties()
{
BtnContinue.BackgroundColor = Color.FromHex(ColorsApp.ColorAppThemePrimary);
BtnContinue.VerticalOptions = LayoutOptions.End;
BtnContinue.HorizontalOptions = LayoutOptions.End;
BtnContinue.TextColor = Color.White;
BtnContinue.Padding = new Thickness(3);
BtnContinue.Margin = new Thickness(0, 0, 30, 30);
BtnContinue.Text = "Continuar";
BtnContinue.FontSize = 22;
BtnContinue.WidthRequest = 140;
}
private void SetColorsApp()
{
BackgroundBot.BackgroundColor = Color.FromHex(ColorsApp.ColorAppThemeDefault);
}
private async void ClickedBtnContinue(object sender, EventArgs e)
{
await Navigation.PushAsync(new ResetPasswordView());
}
I need two things: put the phone number in another color; and place the image next to the label.
I am very beginner, so I ask for some code along with the explanation. Please
It appears that even if the components are oriented horizontally, they
cannot stand side by side. I tried to put both in the same stack
layout but the stack layout height is based on the image, leaving one
or two lines of text hidden
Being honest with you, your Grid is a mess XD
First of all, you should be aware that by using Grid you should be able to get rid of most (if not all) of your Stacklayouts. Please take a look at the great docu that Xamarin has on Grid and many other topics :D
Next i share with you a Grid that i worked out to display what you want (notice the lack of Stacklayout!):
<Grid Padding="20" RowSpacing="70"
BackgroundColor="White">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Label Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2"
Text="Verificar Identidade"
FontSize="30"/>
<Image Grid.Row="1" Grid.Column="0"
Source="TelefonImage"
WidthRequest="100"/>
<Label Grid.Row="1" Grid.Column="1"
FontSize="Medium"
HorizontalTextAlignment="End">
<Label.FormattedText>
<FormattedString>
<Span Text="Foi enviada uma mensagem com Código de Verificação para o Telefone "/>
<Span Text="XXXXX-XX89"
TextColor="Orange"/>
<Span Text=" cadastrado em sua conta. Informe este Código para prosseguir."/>
</FormattedString>
</Label.FormattedText>
</Label>
</Grid>
On my side this looks like:
Also take note of what #Jason said in the comment: "everything you're doing in C# could be included in your XAML" (and that mean all the property setting).
I hope that will get you going!
Edit 1
I was able to quickly achieve the result in the image above by using the Hot Reload in Xamarin.Forms: play with it!
I've been struggling with this for some time now. The problem relates to adding a second legend canvas in a wpf chart. I'm referencing Jack Yu's book Practical WPF Charts and Graphics LineChartWithLegend.xaml file. In the xaml file, I added the new legend canvas named "legendCanvas2". I've changed the code behind to add a second instance of the legend in the AddChart() method. The problem is the second legend does not show inside chartCanvas. I suspect this issue has to do with multiple canvas containers inside chartCanvas but not sure. Any help with alternative ways I can display two legends inside chartCanvas would be appreciated.
XAML
<Window x:Class="LineCharts.LineChartWithLegend"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Line Chart with Legend" Height="400" Width="500">
<Grid Name="grid1" Margin="10">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Name="column1" Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Name="row1" Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBlock Margin="2" x:Name="tbTitle" Grid.Column="1" Grid.Row="0"
RenderTransformOrigin="0.5,0.5" FontSize="14" FontWeight="Bold"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch" TextAlignment="Center"
Text="Title"/>
<TextBlock Margin="2" x:Name="tbXLabel" Grid.Column="1" Grid.Row="2"
RenderTransformOrigin="0.5,0.5" TextAlignment="Center"
Text="X Axis"/>
<TextBlock Margin="2" Name="tbYLabel" Grid.Column="0" Grid.Row="1"
RenderTransformOrigin="0.5,0.5" TextAlignment="Center"
Text="Y Axis">
<TextBlock.LayoutTransform>
<RotateTransform Angle="-90"/>
</TextBlock.LayoutTransform>
</TextBlock>
<Grid Margin="0" x:Name ="chartGrid" Grid.Column="1" Grid.Row="1"
ClipToBounds="True" Background="Transparent" SizeChanged="chartGrid_SizeChanged" />
<Canvas Margin="2" Name="textCanvas" ClipToBounds="True" Grid.Column="1" Grid.Row="1">
<Canvas Name="chartCanvas" ClipToBounds="True">
<Canvas Name="legendCanvas" Background="Transparent" />
<Canvas Name="legendCanvas2" Background="Transparent" />
</Canvas>
</Canvas>
</Grid>
</Window>
Code-Behind
private void AddChart()
{
cs = new ChartStyleGridlines();
lg = new Legend();
lg2 = new Legend();
dc = new DataCollection();
ds = new DataSeries();
cs.ChartCanvas = chartCanvas;
cs.TextCanvas = textCanvas;
cs.Title = "Sine and Cosine Chart";
cs.Xmin = 0;
cs.Xmax = 7;
cs.Ymin = -1.5;
cs.Ymax = 1.5;
cs.YTick = 0.5;
cs.GridlinePattern = ChartStyleGridlines.GridlinePatternEnum.Dot;
cs.GridlineColor = Brushes.Black;
cs.AddChartStyle(tbTitle, tbXLabel, tbYLabel);
// Draw Sine curve:
ds.LineColor = Brushes.Blue;
ds.LineThickness = 1;
ds.SeriesName = "Sine";
for (int i = 0; i < 70; i++)
{
double x = i / 5.0;
double y = Math.Sin(x);
ds.LineSeries.Points.Add(new Point(x, y));
}
dc.DataList.Add(ds);
// Draw cosine curve:
ds = new DataSeries();
ds.LineColor = Brushes.Red;
ds.SeriesName = "Cosine";
ds.LinePattern = DataSeries.LinePatternEnum.DashDot;
ds.LineThickness = 2;
for (int i = 0; i < 70; i++)
{
double x = i / 5.0;
double y = Math.Cos(x);
ds.LineSeries.Points.Add(new Point(x, y));
}
dc.DataList.Add(ds);
// Draw sine^2 curve:
ds = new DataSeries();
ds.LineColor = Brushes.DarkGreen;
ds.SeriesName = "Sine^2";
ds.LinePattern = DataSeries.LinePatternEnum.Dot;
ds.LineThickness = 2;
for (int i = 0; i < 70; i++)
{
double x = i / 5.0;
double y = Math.Sin(x) * Math.Sin(x);
ds.LineSeries.Points.Add(new Point(x, y));
}
dc.DataList.Add(ds);
dc.AddLines(cs);
lg.LegendCanvas = legendCanvas;
lg.IsLegend = true;
lg.IsBorder = true;
lg.LegendPosition = Legend.LegendPositionEnum.NorthWest;
lg.AddLegend(cs.ChartCanvas, dc);
lg2 = new Legend();
lg2.LegendCanvas = legendCanvas2;
lg2.IsLegend = true;
lg2.IsBorder = true;
lg2.LegendPosition = Legend.LegendPositionEnum.NorthEast;
lg2.AddLegend(cs.ChartCanvas, dc);
}
private void chartGrid_SizeChanged(object sender, SizeChangedEventArgs e)
{
textCanvas.Width = chartGrid.ActualWidth;
textCanvas.Height = chartGrid.ActualHeight;
legendCanvas.Children.Clear();
legendCanvas2.Children.Clear();
chartCanvas.Children.RemoveRange(2, chartCanvas.Children.Count - 1); // changed index from 1 to 2
textCanvas.Children.RemoveRange(1, textCanvas.Children.Count - 1);
AddChart();
}
How to make animation stay within the canvas at bigger sizes when the user clicks around the edge of the canvas? Currently, if sizes are too big and if user clicks near the edge of the canvas, the ellipse will grow outside of the canvas to cover the buttons. I need the animation to stay within the canvas to make it look like a slice of pizza essentially.
Should look like this:
Size 50 where user clicks near top left of canvas
Currently looks like this:
Size 50 where user clicks near top left of canvas
Xaml:
<Window.Resources>
<Storyboard x:Key="anim">
<DoubleAnimation
Storyboard.TargetName="myCircle"
Storyboard.TargetProperty="RadiusX"
AutoReverse="True"/>
<DoubleAnimation
Storyboard.TargetName="myCircle"
Storyboard.TargetProperty="RadiusY"
AutoReverse="True"/>
<DoubleAnimation
Storyboard.TargetName="path"
Storyboard.TargetProperty="Opacity"
AutoReverse="True"/>
</Storyboard>
</Window.Resources>
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Grid.RowDefinitions>
<RowDefinition Height="23"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<DockPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Row="0" Margin="0,0,0,1">
<Menu DockPanel.Dock="Top" Height="23">
<MenuItem Header="Main" RenderTransformOrigin="-1.896,0.643" HorizontalAlignment="Left" Width="39" Height="23">
<MenuItem Header="Exit, Esc" Click="MenuItem_Click_Exit"/>
</MenuItem>
</Menu>
</DockPanel>
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Row="1" Name="pane">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="150"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Column="0" Name="pane2">
<Grid.RowDefinitions>
<RowDefinition Height="35"/>
<RowDefinition Height="35"/>
<RowDefinition Height="35"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition Width="50"/>
</Grid.ColumnDefinitions>
<Label Content="Size" Grid.Row="0" Grid.Column="0" Height="25" VerticalAlignment="Stretch"/>
<Label Content="Fill Color" Grid.Row="1" Grid.Column="0" Height="25" VerticalAlignment="Stretch"/>
<Label Content="Stroke Thickness" Grid.Row="2" Grid.Column="0" Height="25" VerticalAlignment="Stretch"/>
<Label Content="Stroke Color" Grid.Row="3" Grid.Column="0" VerticalAlignment="Top" Height="25"/>
<Slider x:Name="Slider_Size" Grid.Row="0" Grid.Column="1" Height="20" Width="45"
Minimum="5" Maximum="50"
AutoToolTipPlacement="BottomRight"
TickFrequency="1"
IsSnapToTickEnabled="True"
PreviewMouseUp="Slider_Size_PreviewMouseUp"/>
<Label Name="tempSize" Content="{Binding Path=Value, ElementName=Slider_Size}" Margin="0,25,0,131" Grid.Row="3" Visibility="Hidden"/>
<ComboBox Name="ComboBox_FillColor" Grid.Row="1" Grid.Column="1" Height="20" Width="45" SelectionChanged="ComboBox_FillColor_Selected"/>
<TextBox Name="textBox" Grid.Row="2" Grid.Column="1" Height="20" Width="45" TextChanged="textBox_TextChanged"/>
<ComboBox Name="ComboBox_StrokeColor" Grid.Row="3" Grid.Column="1" VerticalAlignment="Top" Height="20" Width="45" SelectionChanged="ComboBox_StrokeColor_Selected"/>
</Grid>
<Border Name ="border" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" BorderBrush="Black" Grid.Column="1" BorderThickness="2">
<Canvas Name="canvas" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" MouseDown="Canvas_MouseDown">
<Path x:Name="path">
<Path.Data>
<EllipseGeometry x:Name="myCircle"/>
</Path.Data>
</Path>
<Canvas.Background>
<SolidColorBrush Color="White" Opacity="0"/>
</Canvas.Background>
</Canvas>
</Border>
</Grid>
</Grid>
C#:
public partial class MainWindow : Window
{
private int size;
private SolidColorBrush fillColor;
private SolidColorBrush strokeColor;
private List<SolidColorBrush> colors;
private int fillIndex;
private int strokeIndex;
private int strokeThickness = 1;
private int fillColorDefault;
private int strokeColorDefault;
private Point? _start = null;
public MainWindow()
{
InitializeComponent();
addColors();
textBox.Text = strokeThickness.ToString();
parse();
}
private void MenuItem_Click_Exit(object sender, RoutedEventArgs e) { Environment.Exit(1); }
private void Window_KeyUp_ESC(object sender, KeyEventArgs e)
{
if (Key.Escape == e.Key)
MenuItem_Click_Exit(sender, e);
}
private void addColors()
{
colors = typeof(Brushes).GetProperties().Select(p => p.GetValue(null, null) as SolidColorBrush).ToList();
int count = 0;
foreach (SolidColorBrush color in colors)
{
ComboBox_FillColor.Items.Add(new Rectangle() { Height = 12, Width = 17.5, Fill = color });
ComboBox_StrokeColor.Items.Add(new Rectangle() { Height = 12, Width = 17.5, Fill = color });
if (color.Color == Colors.Red)
{
fillIndex = count;
fillColor = colors[fillIndex];
ComboBox_FillColor.SelectedIndex = count;
fillColorDefault = count;
}
if (color.Color == Colors.Black)
{
strokeIndex = count;
strokeColor = colors[strokeIndex];
ComboBox_StrokeColor.SelectedIndex = count;
strokeColorDefault = count;
}
count++;
}
}
private void ComboBox_FillColor_Selected(object sender, RoutedEventArgs e) { fillIndex = ComboBox_FillColor.SelectedIndex; fillColor = colors[fillIndex]; }
private void ComboBox_StrokeColor_Selected(object sender, RoutedEventArgs e) { strokeIndex = ComboBox_StrokeColor.SelectedIndex; strokeColor = colors[strokeIndex]; }
private void Canvas_MouseDown(object sender, MouseButtonEventArgs e)
{
path.Stroke = strokeColor;
path.StrokeThickness = strokeThickness;
path.Fill = fillColor;
path.HorizontalAlignment = HorizontalAlignment.Stretch;
path.VerticalAlignment = VerticalAlignment.Stretch;
path.Stretch = Stretch.None;
path.SetValue(Grid.ColumnProperty, 1);
_start = Mouse.GetPosition((UIElement)sender);
myCircle.Center = (Point)_start;
var sb = FindResource("anim") as Storyboard;
var x = sb.Children.First() as DoubleAnimation;
x.To = 2 * size;
x.Duration = new Duration(TimeSpan.FromSeconds(0.5));
var y = sb.Children.ElementAt(1) as DoubleAnimation;
y.To = 2 * size;
y.Duration = new Duration(TimeSpan.FromSeconds(0.5));
var z = sb.Children.Last() as DoubleAnimation;
z.From = 0.0;
z.To = 1.0;
z.Duration = new Duration(TimeSpan.FromSeconds(0.5));
sb.Begin(path);
}
private void textBox_TextChanged(object sender, TextChangedEventArgs e)
{
//regex where any string of chars besides numbers
Regex pattern = new Regex(#"^([^0-9]*)$", RegexOptions.Compiled);
Match result = pattern.Match(textBox.Text);
if (textBox.Text.ToString() == string.Empty)
return;
else if (result.Success)
{
MessageBox.Show("Invalid character entered. Integer numbers only. Stroke Thickness will be reseted to a default of 1.");
strokeThickness = 1;
textBox.Text = strokeThickness.ToString();
textBox.SelectAll();
}
else
{
int x;
if (int.TryParse(textBox.Text, out x))
strokeThickness = int.Parse(textBox.Text);
}
}
private void Slider_Size_PreviewMouseUp(object sender, MouseButtonEventArgs e)
{
parse();
}
private void parse()
{
int x;
if (int.TryParse(tempSize.Content.ToString(), out x))
size = x;
}
}
}
So you don't need the ellipse to stay within the Canvas, but you want to clip away the parts leaving it, right? Just set ClipToBounds (of Canvas) to true (can be done in Xaml).
I have to do a drag and drop application listView to code-generated grid.
So I have done a test program and that works
here is the xaml
<Grid Margin="0,0,-61.6,0.4">
<ListView x:Name="lwOne" PreviewMouseLeftButtonDown="ListBox_PreviewMouseLeftButtonDown" Background="Bisque" Margin="16,65,340.2,22">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel Orientation="Horizontal" Width="250" VerticalAlignment="Top"></WrapPanel>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
</ListView>
<Grid Name="grdMain" Drop="Grid_Drop" Background="AliceBlue" AllowDrop="True" Margin="380,65,81.2,62"/>
Now I have to migrate all this to my real application Which looks like that
So from how the cursor looks like i can see that the drag and drop is not allowed on the grid but it is on the tiny border of each cell.
So the problem is not doing d&d but ALLOWING to it
here is the xaml. The source listView is lvAllowedPPtab2, the destination grid is grdPalletTab2
<TabItem Name="tabItem2" HorizontalAlignment="Center" Height="80" MouseLeftButtonUp="TabItem_MouseLeftButtonUp" FontSize="{StaticResource TOOLTIP_FONTSIZE}" IsSelected="false" >
<TabItem.Header>
<StackPanel>
<TextBlock Text="" FontSize="{StaticResource TAB_FONTSIZE}"/>
<TextBlock Name="tbTab2" Visibility="Hidden" FontSize="{StaticResource BUTTON_FONTSIZE}" />
</StackPanel>
</TabItem.Header>
<TabItem.Background>
<ImageBrush/>
</TabItem.Background>
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Border x:Name="Border1Tab2" BorderBrush="Gainsboro" BorderThickness="5" Width="200" Margin="10,10,10,10" >
<StackPanel Margin="-1.8,-0.8,2.2,1.4">
<ListBox x:Name="lbxPalletsTab2" Background="{x:Null}" BorderBrush="{x:Null}" Height="600" SelectionChanged="ListBox_SelectionChanged" Margin="12,10.2,8.4,10.4" />
</StackPanel>
</Border>
<Border x:Name="Border2Tab2" BorderBrush="Gainsboro" MinWidth="150" BorderThickness="5" Grid.Column="1" Margin="10,10,10,10">
<Grid >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="300px"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid HorizontalAlignment="Stretch" Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition Height="50px"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<TextBlock Name="tbkPPtab2" Grid.Row="0" FontSize="22" Background="{x:Null}" FontWeight="Black" Text="---" HorizontalAlignment="Center" VerticalAlignment="Bottom"></TextBlock>
<ListView x:Name="lvAllowedPPtab2" Grid.Row="1" FontSize="12" Background="{x:Null}" BorderBrush="Gainsboro" BorderThickness="5" Margin="10" VerticalAlignment="Stretch" PreviewMouseLeftButtonDown="ListBox_PreviewMouseLeftButtonDown">
<ListView.ItemsPanel >
<ItemsPanelTemplate >
<WrapPanel Orientation="Horizontal" Width="250" Background="{x:Null}" VerticalAlignment="Top"></WrapPanel>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
</ListView>
</Grid>
<Border Grid.Column="1" BorderBrush="Gainsboro" BorderThickness="5" Margin="10,60,10,10">
<Grid Name="grdPalletTab2" AllowDrop="True" Drop="Grid_Drop"/>
</Border>
</Grid>
</Border>
</Grid>
</TabItem>
the grid is formed through
PalletWindow.PalletWindow.SetPalletGrid(numRows, numColumns,ref grdPalletTab2);
whose code is:
public static bool SetPalletGrid(int numRows, int numColumns, ref Grid grd)
{
try
{
grd.Children.Clear();
grd.RowDefinitions.Clear();
grd.ColumnDefinitions.Clear();
grd.AllowDrop = true;
for (int row = 0; row < numRows; row++)
{
var rd = new RowDefinition();
rd.AllowDrop = true;
rd.Height = new GridLength(1.0, GridUnitType.Star);
grd.RowDefinitions.Add(rd);
}
for (int column = 0; column < numColumns; column++)
{
var cd = new ColumnDefinition();
cd.AllowDrop = true;
cd.Width = new GridLength(1.0, GridUnitType.Star);
grd.ColumnDefinitions.Add(cd);
}
for (int row = 0; row < numRows; row++)
{
for (int column = 0; column < numColumns; column++)
{
var borderImage = new Border();
borderImage.AllowDrop = true;
borderImage.BorderThickness = new Thickness(2);
borderImage.BorderBrush = new SolidColorBrush(Colors.Black);
borderImage.Name = "BRD_" + row + "_" + column;
borderImage.Effect = new DropShadowEffect
{
Color = new Color { R = 255, G = 255, B = 255 },
Direction = 320,
ShadowDepth = 5,
Opacity = 0.95
};
Grid.SetRow(borderImage, row);
Grid.SetColumn(borderImage, column);
grd.Children.Add(borderImage);
}
}
return true;
}
catch// (Exception exc)
{
return false;
}
}
thanks for any help
Patrick
To make d&d work you have to set the background of the target element (don't know why). In your case set borderImage = new SolidColorBrush(Colors.Transparent);
im trying to design tiles in one section of the pivot with 6 tiles both portrait and landscape. i want 3x2 (3rows) tiles for portrait and 2x3 tiles for landscape. it shows 3x2 in both modes without c# code but after adding that code it crashes on first Setvalue.
my xaml code:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="172"/>
<RowDefinition Height="172"/>
<RowDefinition x:Name="more_3rdrow" Height="172"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="172"/>
<ColumnDefinition Width="172"/>
<ColumnDefinition x:Name="more_3rdcolumn" Width="0"/>
</Grid.ColumnDefinitions>
<Grid Grid.Row="0" Grid.Column="0" x:Name="contacttile">
some data here
</Grid>
<Grid Grid.Row="0" Grid.Column="1" x:Name="ratetile">
some data here
</Grid>
<Grid Grid.Row="1" Grid.Column="0" x:Name="moreappstile">
some data here
</Grid>
more grids here
</Grid>
my c# code:
private void pivot_Loaded(object sender, RoutedEventArgs e)
{
moresectionLoaded = 1;
}
private void PageBase_SizeChanged(object sender, SizeChangedEventArgs e)
{
if (moresectionLoaded == 1)
{
string currentviewstate = ApplicationView.GetForCurrentView().Orientation.ToString();
if (currentviewstate == "Portrait")
{
///crashes in below line
more_3rdrow.SetValue(RowDefinition.HeightProperty, 172);
more_3rdcolumn.SetValue(ColumnDefinition.WidthProperty, 0);
moreappstile.SetValue(Grid.RowProperty, 1);
moreappstile.SetValue(Grid.ColumnProperty, 0);
abouttile.SetValue(Grid.RowProperty, 1);
abouttile.SetValue(Grid.ColumnProperty, 1);
pintile.SetValue(Grid.RowProperty, 2);
pintile.SetValue(Grid.ColumnProperty, 0);
pintypestile.SetValue(Grid.RowProperty, 2);
pintypestile.SetValue(Grid.ColumnProperty, 1);
}
if (currentviewstate == "Landscape")
{
///crashes in below line
more_3rdrow.SetValue(RowDefinition.HeightProperty, 0);
more_3rdcolumn.SetValue(ColumnDefinition.WidthProperty, 172);
moreappstile.SetValue(Grid.RowProperty, 0);
moreappstile.SetValue(Grid.ColumnProperty, 2);
abouttile.SetValue(Grid.RowProperty, 1);
abouttile.SetValue(Grid.ColumnProperty, 0);
pintile.SetValue(Grid.RowProperty, 1);
pintile.SetValue(Grid.ColumnProperty, 1);
pintypestile.SetValue(Grid.RowProperty, 1);
pintypestile.SetValue(Grid.ColumnProperty, 2);
}
}
}
The Height in the RowDefinition DependendyObject is not double is GridLenght class, so you have to use:
more_3rdrow.SetValue(RowDefinition.HeightProperty, new GridLength(172));
This is because you can define Auto, 1*, or fixed size. So be careful with ColumDefinition too