回答編集履歴
6
リンク切れ アーカイブもなし
test
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![アプリ画像](6d991bd3ad0ddd1000be0508c439cf4e.png)
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参考
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[InkCanvas | HIROs.NET Blog](http://blog.hiros-dot.net/?page_id=3413)
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[WPF inkcanvas draws rectangles and ellipses | Develop Paper](https://developpaper.com/wpf-inkcanvas-draws-rectangles-and-ellipses/)
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---
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5
見直しキャンペーン中
test
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> Rectangle、EllipseをInkCanvasEditingMode.EraseByPointで消せるようにしたいと考えているのですが可能なのでしょうか?
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`EditingMode`を変えるだけなんですから、やってみればいいんでは?(10秒で試せると思うのですが)
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出来たらスゲーなと思いつつ試してみましたが、案の定できませんでした。。。
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`Children`に入れたものはあくまで背景?(というかInkの後ろ側に描画するだけ)であって、ストロークには含まれません。
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[InkCanvas.Strokes プロパティ (System.Windows.Controls) | Microsoft Docs](https://docs.microsoft.com/ja-jp/dotnet/api/system.windows.controls.inkcanvas.strokes?view=net-6.0)
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> 別の方法でも構いませんので、なにかいい案がある方はぜひお力添えお願いします。
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どうにかして`Stroke`を作るしかなさそうですね。
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ググって出てきたのを参考にざっと作ってみました。
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ペン・消しゴム・四角・楕円・選択・ジェスチャ(四角・楕円のみ)モードがあります。
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```x
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```xml
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<Window
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x:Class="Questions372920.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:local="clr-namespace:Questions372920"
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Width="800"
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Height="450">
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<DockPanel>
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<UniformGrid HorizontalAlignment="Left" DockPanel.Dock="Top" Rows="1">
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<UniformGrid.Resources>
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<Style BasedOn="{StaticResource {x:Type ToggleButton}}" TargetType="RadioButton">
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<EventSetter Event="Checked" Handler="RadioButton_Checked" />
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</Style>
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</UniformGrid.Resources>
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<RadioButton Content="{x:Static local:MyInkMode.Pen}" IsChecked="True" />
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<RadioButton Content="{x:Static local:MyInkMode.Rect}" />
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<RadioButton Content="{x:Static local:MyInkMode.Ellipse}" />
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<RadioButton Content="{x:Static local:MyInkMode.Gesture}" />
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<RadioButton Content="{x:Static local:MyInkMode.Select}" />
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<RadioButton Content="{x:Static local:MyInkMode.Erase}" />
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</UniformGrid>
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<Grid>
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<InkCanvas
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Name="inkCanvas"
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Background="WhiteSmoke"
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EditingMode="Ink"
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Gesture="InkCanvas_Gesture"
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MouseLeftButtonDown="InkCanvas_MouseLeftButtonDown"
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MouseLeftButtonUp="InkCanvas_MouseLeftButtonUp"
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MouseMove="InkCanvas_MouseMove">
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<Rectangle
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Width="50"
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Height="50"
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InkCanvas.Left="50"
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InkCanvas.Top="50"
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Stroke="Red" />
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<Button Content="押せないよ" InkCanvas.Left="50" InkCanvas.Top="10" />
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<TextBlock InkCanvas.Left="50" InkCanvas.Top="110" Text="↑消せないよ" />
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</InkCanvas>
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<!-- 四角・楕円ツール使用中の仮表示 本来はAdornerなんかでやるべきだが本題でないので手抜き -->
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<Canvas Background="{x:Null}" ClipToBounds="True">
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<Ellipse
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x:Name="tmpEllipse"
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Fill="Red"
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Stroke="Black"
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StrokeThickness="2" />
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<Rectangle
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x:Name="tmpRect"
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Fill="Red"
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Stroke="Black"
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StrokeThickness="2" />
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</Canvas>
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</Grid>
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</DockPanel>
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</Window>
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```
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```
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+
```cs
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using System;
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using System.Collections.Generic;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Ink;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Shapes;
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namespace Questions372920
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{
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public enum MyInkMode { Pen, Rect, Ellipse, Gesture, Select, Erase, };
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public partial class MainWindow : Window
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{
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private Point startPoint;
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private bool isDragging;
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private MyInkMode mode;
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public MainWindow() => InitializeComponent();
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private void RadioButton_Checked(object sender, RoutedEventArgs e)
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{
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{
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if (sender is RadioButton rb && rb.Content is MyInkMode m)
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{
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{
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mode = m;
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if (inkCanvas == null) return;
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switch (mode)
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{
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case MyInkMode.Pen: inkCanvas.EditingMode = InkCanvasEditingMode.Ink; break;
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case MyInkMode.Rect:
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case MyInkMode.Ellipse:
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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break;
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case MyInkMode.Gesture: inkCanvas.EditingMode = InkCanvasEditingMode.GestureOnly; break;
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case MyInkMode.Select: inkCanvas.EditingMode = InkCanvasEditingMode.Select; break;
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case MyInkMode.Erase: inkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint; break;
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}
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}
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}
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}
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}
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private void InkCanvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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{
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if (mode != MyInkMode.Rect && mode != MyInkMode.Ellipse) return;
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isDragging = true;
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startPoint = e.GetPosition(inkCanvas);
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inkCanvas.CaptureMouse();
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}
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}
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private void InkCanvas_MouseMove(object sender, MouseEventArgs e)
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{
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{
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if (!isDragging) return;
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Shape shape;
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switch (mode)
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{
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{
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case MyInkMode.Rect: shape = tmpRect; break;
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case MyInkMode.Ellipse: shape = tmpEllipse; break;
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default: return;
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}
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}
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var r = new Rect(startPoint, e.GetPosition(inkCanvas));
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r.Inflate(1, 1);
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Canvas.SetLeft(shape, r.X);
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Canvas.SetTop(shape, r.Y);
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shape.Width = r.Width;
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shape.Height = r.Height;
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}
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}
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private void InkCanvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
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{
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{
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if (mode != MyInkMode.Rect && mode != MyInkMode.Ellipse) return;
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inkCanvas.ReleaseMouseCapture();
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isDragging = false;
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var r = new Rect(startPoint, e.GetPosition(inkCanvas));
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switch (mode)
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{
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{
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case MyInkMode.Rect:
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AddRect(r.TopLeft, r.BottomRight);
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tmpRect.Width = tmpRect.Height = 0;
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break;
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case MyInkMode.Ellipse:
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AddEllipse(r.TopLeft, r.BottomRight);
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tmpEllipse.Width = tmpEllipse.Height = 0;
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break;
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default: return;
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}
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}
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}
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}
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private void InkCanvas_Gesture(object sender, InkCanvasGestureEventArgs e)
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{
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{
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var result = e.GetGestureRecognitionResults()[0];
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if (result.RecognitionConfidence != RecognitionConfidence.Strong) return;
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var r = e.Strokes.GetBounds();
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switch (result.ApplicationGesture)
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{
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{
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case ApplicationGesture.Square: AddRect(r.TopLeft, r.BottomRight); break;
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case ApplicationGesture.Circle: AddEllipse(r.TopLeft, r.BottomRight); break;
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}
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}
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}
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}
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private void AddRect(Point start, Point end)
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{
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{
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187
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var n = new List<Point>();
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for (var i = start.Y; i < end.Y; i += 2) // えらい雑w
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{
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{
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n.Add(new Point(start.X, i));
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n.Add(new Point(end.X, i));
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}
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}
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193
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if (0 < n.Count)
|
386
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387
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{
|
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{
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195
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var s = new Stroke(new StylusPointCollection(n));
|
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196
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s.DrawingAttributes.Color = Colors.Red;
|
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197
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inkCanvas.Strokes.Add(s);
|
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395
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}
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}
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397
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398
199
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399
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var points = new Point[]
|
400
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401
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{
|
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{
|
402
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403
202
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new Point(start.X, start.Y),
|
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new Point(start.X, end.Y),
|
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204
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new Point(end.X, end.Y),
|
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205
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new Point(end.X, start.Y),
|
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new Point(start.X, start.Y),
|
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};
|
414
208
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|
415
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var stroke = new Stroke(new StylusPointCollection(points));
|
418
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-
|
419
210
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inkCanvas.Strokes.Add(stroke);
|
420
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|
421
|
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}
|
211
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+
}
|
422
|
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|
423
|
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|
424
212
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|
425
213
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private void AddEllipse(Point start, Point end)
|
426
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-
|
427
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-
{
|
214
|
+
{
|
428
|
-
|
429
215
|
var a = (end.X - start.X) / 2;
|
430
|
-
|
431
216
|
var b = (end.Y - start.Y) / 2;
|
432
|
-
|
433
217
|
var offset = (Vector)((end - start) / 2 + start);
|
434
218
|
|
435
|
-
|
436
|
-
|
437
219
|
var n = new List<Point>();
|
438
|
-
|
439
220
|
for (var x = -a; x < a; x += 2) // さらに雑w
|
440
|
-
|
441
|
-
{
|
221
|
+
{
|
442
|
-
|
443
222
|
var y = b * Math.Sqrt(Math.Pow(a, 2) - Math.Pow(x, 2)) / a;
|
444
|
-
|
445
223
|
n.Add(new Point(x, -y) + offset);
|
446
|
-
|
447
224
|
n.Add(new Point(x, y) + offset);
|
448
|
-
|
449
|
-
}
|
225
|
+
}
|
450
|
-
|
451
226
|
if (0 < n.Count)
|
452
|
-
|
453
|
-
{
|
227
|
+
{
|
454
|
-
|
455
228
|
var s = new Stroke(new StylusPointCollection(n));
|
456
|
-
|
457
229
|
s.DrawingAttributes.Color = Colors.Red;
|
458
|
-
|
459
230
|
inkCanvas.Strokes.Add(s);
|
460
|
-
|
461
|
-
}
|
231
|
+
}
|
462
|
-
|
463
|
-
|
464
232
|
|
465
233
|
var points = new List<Point>();
|
466
|
-
|
467
234
|
for (var i = 0; i <= 360; i += 5)
|
468
|
-
|
469
|
-
{
|
235
|
+
{
|
470
|
-
|
471
236
|
var x = a * Math.Cos(i / 180d * Math.PI);
|
472
|
-
|
473
237
|
var y = b * Math.Sin(i / 180d * Math.PI);
|
474
|
-
|
475
238
|
points.Add(new Point(x, y) + offset);
|
476
|
-
|
477
|
-
}
|
239
|
+
}
|
478
|
-
|
479
|
-
|
480
240
|
|
481
241
|
var stroke = new Stroke(new StylusPointCollection(points));
|
482
|
-
|
483
242
|
stroke.DrawingAttributes.FitToCurve = true;
|
484
|
-
|
485
243
|
inkCanvas.Strokes.Add(stroke);
|
486
|
-
|
487
|
-
}
|
244
|
+
}
|
488
|
-
|
489
245
|
}
|
490
|
-
|
491
246
|
}
|
492
|
-
|
493
247
|
```
|
494
|
-
|
495
248
|
![アプリ画像](6d991bd3ad0ddd1000be0508c439cf4e.png)
|
496
|
-
|
497
249
|
参考
|
498
|
-
|
499
250
|
[InkCanvas | HIROs.NET Blog](http://blog.hiros-dot.net/?page_id=3413)
|
500
|
-
|
501
251
|
[WPF inkcanvas draws rectangles and ellipses | Develop Paper](https://developpaper.com/wpf-inkcanvas-draws-rectangles-and-ellipses/)
|
502
252
|
|
503
|
-
|
504
|
-
|
505
253
|
---
|
506
254
|
|
507
|
-
|
508
|
-
|
509
255
|
> C# wpfにてペイントソフトを作ろうと思っています。
|
510
256
|
|
511
|
-
|
512
|
-
|
513
257
|
`InkCanvas`は手書き・ジェスチャ認識等すごい機能もあるんですが、あくまでペン用であって例えば塗りつぶし機能はありません。
|
514
|
-
|
515
258
|
ペイントソフトに向いているかというと微妙な気もします。
|
516
259
|
|
517
|
-
|
518
|
-
|
519
260
|
「じゃあどうすりゃいいの?」ってことですが、わたしはこの手のものは全く興味がないので他の方を参考にしてください^^;
|
520
|
-
|
521
261
|
[Search · wpf paint application](https://github.com/search?q=wpf+paint+application&type=Repositories)
|
522
262
|
|
523
|
-
|
524
|
-
|
525
263
|
---
|
526
264
|
|
527
|
-
|
528
|
-
|
529
265
|
コメントで言及したChildrenに入れたコントロールが、(何もしなくても)移動・リサイズできちゃうの図
|
530
|
-
|
531
266
|
![アプリ画像](a578aef9a514cdfac8a6ee02cd2e60d4.png)
|
4
楕円対応
test
CHANGED
@@ -46,69 +46,99 @@
|
|
46
46
|
|
47
47
|
<DockPanel>
|
48
48
|
|
49
|
-
<
|
50
|
-
|
51
|
-
<
|
52
|
-
|
53
|
-
<
|
54
|
-
|
55
|
-
<
|
56
|
-
|
57
|
-
<
|
58
|
-
|
59
|
-
|
60
|
-
|
61
|
-
|
62
|
-
|
63
|
-
|
64
|
-
|
65
|
-
<
|
66
|
-
|
67
|
-
<
|
68
|
-
|
69
|
-
|
70
|
-
|
71
|
-
<
|
72
|
-
|
73
|
-
|
74
|
-
|
75
|
-
|
76
|
-
|
77
|
-
|
78
|
-
|
79
|
-
|
80
|
-
|
81
|
-
|
82
|
-
|
83
|
-
|
84
|
-
|
85
|
-
Mo
|
86
|
-
|
87
|
-
|
88
|
-
|
89
|
-
|
90
|
-
|
91
|
-
|
92
|
-
|
93
|
-
|
94
|
-
|
95
|
-
|
96
|
-
|
97
|
-
|
98
|
-
|
99
|
-
|
100
|
-
|
101
|
-
|
102
|
-
|
103
|
-
|
104
|
-
|
105
|
-
|
106
|
-
|
107
|
-
<
|
108
|
-
|
109
|
-
<
|
110
|
-
|
111
|
-
</InkCanvas>
|
49
|
+
<UniformGrid HorizontalAlignment="Left" DockPanel.Dock="Top" Rows="1">
|
50
|
+
|
51
|
+
<UniformGrid.Resources>
|
52
|
+
|
53
|
+
<Style BasedOn="{StaticResource {x:Type ToggleButton}}" TargetType="RadioButton">
|
54
|
+
|
55
|
+
<EventSetter Event="Checked" Handler="RadioButton_Checked" />
|
56
|
+
|
57
|
+
</Style>
|
58
|
+
|
59
|
+
</UniformGrid.Resources>
|
60
|
+
|
61
|
+
<RadioButton Content="{x:Static local:MyInkMode.Pen}" IsChecked="True" />
|
62
|
+
|
63
|
+
<RadioButton Content="{x:Static local:MyInkMode.Rect}" />
|
64
|
+
|
65
|
+
<RadioButton Content="{x:Static local:MyInkMode.Ellipse}" />
|
66
|
+
|
67
|
+
<RadioButton Content="{x:Static local:MyInkMode.Gesture}" />
|
68
|
+
|
69
|
+
<RadioButton Content="{x:Static local:MyInkMode.Select}" />
|
70
|
+
|
71
|
+
<RadioButton Content="{x:Static local:MyInkMode.Erase}" />
|
72
|
+
|
73
|
+
</UniformGrid>
|
74
|
+
|
75
|
+
|
76
|
+
|
77
|
+
<Grid>
|
78
|
+
|
79
|
+
<InkCanvas
|
80
|
+
|
81
|
+
Name="inkCanvas"
|
82
|
+
|
83
|
+
Background="WhiteSmoke"
|
84
|
+
|
85
|
+
EditingMode="Ink"
|
86
|
+
|
87
|
+
Gesture="InkCanvas_Gesture"
|
88
|
+
|
89
|
+
MouseLeftButtonDown="InkCanvas_MouseLeftButtonDown"
|
90
|
+
|
91
|
+
MouseLeftButtonUp="InkCanvas_MouseLeftButtonUp"
|
92
|
+
|
93
|
+
MouseMove="InkCanvas_MouseMove">
|
94
|
+
|
95
|
+
<Rectangle
|
96
|
+
|
97
|
+
Width="50"
|
98
|
+
|
99
|
+
Height="50"
|
100
|
+
|
101
|
+
InkCanvas.Left="50"
|
102
|
+
|
103
|
+
InkCanvas.Top="50"
|
104
|
+
|
105
|
+
Stroke="Red" />
|
106
|
+
|
107
|
+
<Button Content="押せないよ" InkCanvas.Left="50" InkCanvas.Top="10" />
|
108
|
+
|
109
|
+
<TextBlock InkCanvas.Left="50" InkCanvas.Top="110" Text="↑消せないよ" />
|
110
|
+
|
111
|
+
</InkCanvas>
|
112
|
+
|
113
|
+
|
114
|
+
|
115
|
+
<!-- 四角・楕円ツール使用中の仮表示 本来はAdornerなんかでやるべきだが本題でないので手抜き -->
|
116
|
+
|
117
|
+
<Canvas Background="{x:Null}" ClipToBounds="True">
|
118
|
+
|
119
|
+
<Ellipse
|
120
|
+
|
121
|
+
x:Name="tmpEllipse"
|
122
|
+
|
123
|
+
Fill="Red"
|
124
|
+
|
125
|
+
Stroke="Black"
|
126
|
+
|
127
|
+
StrokeThickness="2" />
|
128
|
+
|
129
|
+
<Rectangle
|
130
|
+
|
131
|
+
x:Name="tmpRect"
|
132
|
+
|
133
|
+
Fill="Red"
|
134
|
+
|
135
|
+
Stroke="Black"
|
136
|
+
|
137
|
+
StrokeThickness="2" />
|
138
|
+
|
139
|
+
</Canvas>
|
140
|
+
|
141
|
+
</Grid>
|
112
142
|
|
113
143
|
</DockPanel>
|
114
144
|
|
@@ -164,138 +194,148 @@
|
|
164
194
|
|
165
195
|
|
166
196
|
|
167
|
-
private void
|
197
|
+
private void RadioButton_Checked(object sender, RoutedEventArgs e)
|
168
|
-
|
198
|
+
|
169
|
-
{
|
199
|
+
{
|
170
|
-
|
200
|
+
|
171
|
-
|
201
|
+
if (sender is RadioButton rb && rb.Content is MyInkMode m)
|
202
|
+
|
172
|
-
|
203
|
+
{
|
204
|
+
|
205
|
+
mode = m;
|
206
|
+
|
173
|
-
if (inkCanvas == null) return;
|
207
|
+
if (inkCanvas == null) return;
|
208
|
+
|
209
|
+
|
210
|
+
|
174
|
-
|
211
|
+
switch (mode)
|
212
|
+
|
175
|
-
|
213
|
+
{
|
214
|
+
|
215
|
+
case MyInkMode.Pen: inkCanvas.EditingMode = InkCanvasEditingMode.Ink; break;
|
216
|
+
|
217
|
+
case MyInkMode.Rect:
|
218
|
+
|
219
|
+
case MyInkMode.Ellipse:
|
220
|
+
|
221
|
+
inkCanvas.EditingMode = InkCanvasEditingMode.None;
|
222
|
+
|
223
|
+
break;
|
224
|
+
|
225
|
+
case MyInkMode.Gesture: inkCanvas.EditingMode = InkCanvasEditingMode.GestureOnly; break;
|
226
|
+
|
227
|
+
case MyInkMode.Select: inkCanvas.EditingMode = InkCanvasEditingMode.Select; break;
|
228
|
+
|
229
|
+
case MyInkMode.Erase: inkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint; break;
|
230
|
+
|
231
|
+
}
|
232
|
+
|
233
|
+
}
|
234
|
+
|
235
|
+
}
|
236
|
+
|
237
|
+
|
238
|
+
|
239
|
+
private void InkCanvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
|
240
|
+
|
241
|
+
{
|
242
|
+
|
243
|
+
if (mode != MyInkMode.Rect && mode != MyInkMode.Ellipse) return;
|
244
|
+
|
245
|
+
|
246
|
+
|
247
|
+
isDragging = true;
|
248
|
+
|
249
|
+
startPoint = e.GetPosition(inkCanvas);
|
250
|
+
|
251
|
+
inkCanvas.CaptureMouse();
|
252
|
+
|
253
|
+
}
|
254
|
+
|
255
|
+
|
256
|
+
|
257
|
+
private void InkCanvas_MouseMove(object sender, MouseEventArgs e)
|
258
|
+
|
259
|
+
{
|
260
|
+
|
261
|
+
if (!isDragging) return;
|
262
|
+
|
263
|
+
|
264
|
+
|
265
|
+
Shape shape;
|
176
266
|
|
177
267
|
switch (mode)
|
178
268
|
|
179
269
|
{
|
180
270
|
|
271
|
+
case MyInkMode.Rect: shape = tmpRect; break;
|
272
|
+
|
181
|
-
case MyInkMode.
|
273
|
+
case MyInkMode.Ellipse: shape = tmpEllipse; break;
|
274
|
+
|
275
|
+
default: return;
|
276
|
+
|
277
|
+
}
|
278
|
+
|
279
|
+
|
280
|
+
|
281
|
+
var r = new Rect(startPoint, e.GetPosition(inkCanvas));
|
282
|
+
|
283
|
+
r.Inflate(1, 1);
|
284
|
+
|
285
|
+
|
286
|
+
|
287
|
+
Canvas.SetLeft(shape, r.X);
|
288
|
+
|
289
|
+
Canvas.SetTop(shape, r.Y);
|
290
|
+
|
291
|
+
shape.Width = r.Width;
|
292
|
+
|
293
|
+
shape.Height = r.Height;
|
294
|
+
|
295
|
+
}
|
296
|
+
|
297
|
+
|
298
|
+
|
299
|
+
private void InkCanvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
|
300
|
+
|
301
|
+
{
|
302
|
+
|
303
|
+
if (mode != MyInkMode.Rect && mode != MyInkMode.Ellipse) return;
|
304
|
+
|
305
|
+
|
306
|
+
|
307
|
+
inkCanvas.ReleaseMouseCapture();
|
308
|
+
|
309
|
+
isDragging = false;
|
310
|
+
|
311
|
+
|
312
|
+
|
313
|
+
var r = new Rect(startPoint, e.GetPosition(inkCanvas));
|
314
|
+
|
315
|
+
switch (mode)
|
316
|
+
|
317
|
+
{
|
182
318
|
|
183
319
|
case MyInkMode.Rect:
|
184
320
|
|
321
|
+
AddRect(r.TopLeft, r.BottomRight);
|
322
|
+
|
323
|
+
tmpRect.Width = tmpRect.Height = 0;
|
324
|
+
|
325
|
+
break;
|
326
|
+
|
185
327
|
case MyInkMode.Ellipse:
|
186
328
|
|
329
|
+
AddEllipse(r.TopLeft, r.BottomRight);
|
330
|
+
|
187
|
-
i
|
331
|
+
tmpEllipse.Width = tmpEllipse.Height = 0;
|
188
332
|
|
189
333
|
break;
|
190
334
|
|
191
|
-
case MyInkMode.Gesture: inkCanvas.EditingMode = InkCanvasEditingMode.GestureOnly; break;
|
192
|
-
|
193
|
-
case MyInkMode.Select: inkCanvas.EditingMode = InkCanvasEditingMode.Select; break;
|
194
|
-
|
195
|
-
case MyInkMode.Erase: inkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint; break;
|
196
|
-
|
197
|
-
}
|
198
|
-
|
199
|
-
}
|
200
|
-
|
201
|
-
|
202
|
-
|
203
|
-
private void InkCanvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
|
204
|
-
|
205
|
-
{
|
206
|
-
|
207
|
-
if (mode != MyInkMode.Rect && mode != MyInkMode.Ellipse) return;
|
208
|
-
|
209
|
-
|
210
|
-
|
211
|
-
isDragging = true;
|
212
|
-
|
213
|
-
startPoint = e.GetPosition(inkCanvas);
|
214
|
-
|
215
|
-
}
|
216
|
-
|
217
|
-
|
218
|
-
|
219
|
-
private void InkCanvas_MouseMove(object sender, MouseEventArgs e)
|
220
|
-
|
221
|
-
{
|
222
|
-
|
223
|
-
if (!isDragging) return;
|
224
|
-
|
225
|
-
|
226
|
-
|
227
|
-
Shape shape;
|
228
|
-
|
229
|
-
switch (mode)
|
230
|
-
|
231
|
-
{
|
232
|
-
|
233
|
-
case MyInkMode.Rect: shape = rect; break;
|
234
|
-
|
235
|
-
case MyInkMode.Ellipse: shape = elli; break;
|
236
|
-
|
237
335
|
default: return;
|
238
336
|
|
239
337
|
}
|
240
338
|
|
241
|
-
|
242
|
-
|
243
|
-
var r = new Rect(startPoint, e.GetPosition(inkCanvas));
|
244
|
-
|
245
|
-
r.Inflate(1, 1);
|
246
|
-
|
247
|
-
|
248
|
-
|
249
|
-
InkCanvas.SetLeft(shape, r.X);
|
250
|
-
|
251
|
-
InkCanvas.SetTop(shape, r.Y);
|
252
|
-
|
253
|
-
shape.Width = r.Width;
|
254
|
-
|
255
|
-
shape.Height = r.Height;
|
256
|
-
|
257
|
-
}
|
258
|
-
|
259
|
-
|
260
|
-
|
261
|
-
private void InkCanvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
|
262
|
-
|
263
|
-
{
|
264
|
-
|
265
|
-
if (mode != MyInkMode.Rect && mode != MyInkMode.Ellipse) return;
|
266
|
-
|
267
|
-
|
268
|
-
|
269
|
-
isDragging = false;
|
270
|
-
|
271
|
-
|
272
|
-
|
273
|
-
var r = new Rect(startPoint, e.GetPosition(inkCanvas));
|
274
|
-
|
275
|
-
switch (mode)
|
276
|
-
|
277
|
-
{
|
278
|
-
|
279
|
-
case MyInkMode.Rect:
|
280
|
-
|
281
|
-
AddRect(r.TopLeft, r.BottomRight);
|
282
|
-
|
283
|
-
rect.Width = rect.Height = 0;
|
284
|
-
|
285
|
-
break;
|
286
|
-
|
287
|
-
case MyInkMode.Ellipse:
|
288
|
-
|
289
|
-
AddEllipse(r.TopLeft, r.BottomRight);
|
290
|
-
|
291
|
-
elli.Width = elli.Height = 0;
|
292
|
-
|
293
|
-
break;
|
294
|
-
|
295
|
-
default: return;
|
296
|
-
|
297
|
-
}
|
298
|
-
|
299
339
|
}
|
300
340
|
|
301
341
|
|
@@ -342,11 +382,17 @@
|
|
342
382
|
|
343
383
|
}
|
344
384
|
|
385
|
+
if (0 < n.Count)
|
386
|
+
|
387
|
+
{
|
388
|
+
|
345
|
-
var s = new Stroke(new StylusPointCollection(n));
|
389
|
+
var s = new Stroke(new StylusPointCollection(n));
|
346
|
-
|
390
|
+
|
347
|
-
s.DrawingAttributes.Color = Colors.Red;
|
391
|
+
s.DrawingAttributes.Color = Colors.Red;
|
348
|
-
|
392
|
+
|
349
|
-
inkCanvas.Strokes.Add(s);
|
393
|
+
inkCanvas.Strokes.Add(s);
|
394
|
+
|
395
|
+
}
|
350
396
|
|
351
397
|
|
352
398
|
|
@@ -376,33 +422,43 @@
|
|
376
422
|
|
377
423
|
|
378
424
|
|
379
|
-
// もっと短くできそうですが、こういう計算が苦手なので^^;
|
380
|
-
|
381
|
-
// 元コードよりは大幅にPointが減ってはいます
|
382
|
-
|
383
425
|
private void AddEllipse(Point start, Point end)
|
384
426
|
|
385
427
|
{
|
386
428
|
|
387
|
-
var a =
|
429
|
+
var a = (end.X - start.X) / 2;
|
388
|
-
|
430
|
+
|
389
|
-
var b =
|
431
|
+
var b = (end.Y - start.Y) / 2;
|
390
|
-
|
432
|
+
|
391
|
-
var
|
433
|
+
var offset = (Vector)((end - start) / 2 + start);
|
392
|
-
|
393
|
-
|
434
|
+
|
394
|
-
|
395
|
-
|
396
|
-
|
435
|
+
|
436
|
+
|
397
|
-
|
437
|
+
var n = new List<Point>();
|
398
|
-
|
438
|
+
|
399
|
-
//
|
439
|
+
for (var x = -a; x < a; x += 2) // さらに雑w
|
440
|
+
|
400
|
-
|
441
|
+
{
|
442
|
+
|
443
|
+
var y = b * Math.Sqrt(Math.Pow(a, 2) - Math.Pow(x, 2)) / a;
|
444
|
+
|
445
|
+
n.Add(new Point(x, -y) + offset);
|
446
|
+
|
447
|
+
n.Add(new Point(x, y) + offset);
|
448
|
+
|
449
|
+
}
|
450
|
+
|
451
|
+
if (0 < n.Count)
|
452
|
+
|
453
|
+
{
|
454
|
+
|
401
|
-
|
455
|
+
var s = new Stroke(new StylusPointCollection(n));
|
402
|
-
|
456
|
+
|
403
|
-
|
457
|
+
s.DrawingAttributes.Color = Colors.Red;
|
404
|
-
|
458
|
+
|
405
|
-
|
459
|
+
inkCanvas.Strokes.Add(s);
|
460
|
+
|
461
|
+
}
|
406
462
|
|
407
463
|
|
408
464
|
|
@@ -412,11 +468,11 @@
|
|
412
468
|
|
413
469
|
{
|
414
470
|
|
415
|
-
var x =
|
471
|
+
var x = a * Math.Cos(i / 180d * Math.PI);
|
416
|
-
|
472
|
+
|
417
|
-
var y =
|
473
|
+
var y = b * Math.Sin(i / 180d * Math.PI);
|
418
|
-
|
474
|
+
|
419
|
-
points.Add(new Point(x, y));
|
475
|
+
points.Add(new Point(x, y) + offset);
|
420
476
|
|
421
477
|
}
|
422
478
|
|
@@ -436,7 +492,7 @@
|
|
436
492
|
|
437
493
|
```
|
438
494
|
|
439
|
-
![アプリ画像](
|
495
|
+
![アプリ画像](6d991bd3ad0ddd1000be0508c439cf4e.png)
|
440
496
|
|
441
497
|
参考
|
442
498
|
|
3
超雑に塗りつぶし
test
CHANGED
@@ -132,10 +132,14 @@
|
|
132
132
|
|
133
133
|
using System.Windows.Input;
|
134
134
|
|
135
|
+
using System.Windows.Media;
|
136
|
+
|
135
137
|
using System.Windows.Shapes;
|
136
138
|
|
137
139
|
|
138
140
|
|
141
|
+
|
142
|
+
|
139
143
|
namespace Questions372920
|
140
144
|
|
141
145
|
{
|
@@ -264,7 +268,9 @@
|
|
264
268
|
|
265
269
|
isDragging = false;
|
266
270
|
|
271
|
+
|
272
|
+
|
267
|
-
|
273
|
+
var r = new Rect(startPoint, e.GetPosition(inkCanvas));
|
268
274
|
|
269
275
|
switch (mode)
|
270
276
|
|
@@ -272,7 +278,7 @@
|
|
272
278
|
|
273
279
|
case MyInkMode.Rect:
|
274
280
|
|
275
|
-
AddRect(
|
281
|
+
AddRect(r.TopLeft, r.BottomRight);
|
276
282
|
|
277
283
|
rect.Width = rect.Height = 0;
|
278
284
|
|
@@ -280,7 +286,7 @@
|
|
280
286
|
|
281
287
|
case MyInkMode.Ellipse:
|
282
288
|
|
283
|
-
AddEllipse(
|
289
|
+
AddEllipse(r.TopLeft, r.BottomRight);
|
284
290
|
|
285
291
|
elli.Width = elli.Height = 0;
|
286
292
|
|
@@ -324,6 +330,26 @@
|
|
324
330
|
|
325
331
|
{
|
326
332
|
|
333
|
+
var n = new List<Point>();
|
334
|
+
|
335
|
+
for (var i = start.Y; i < end.Y; i += 2) // えらい雑w
|
336
|
+
|
337
|
+
{
|
338
|
+
|
339
|
+
n.Add(new Point(start.X, i));
|
340
|
+
|
341
|
+
n.Add(new Point(end.X, i));
|
342
|
+
|
343
|
+
}
|
344
|
+
|
345
|
+
var s = new Stroke(new StylusPointCollection(n));
|
346
|
+
|
347
|
+
s.DrawingAttributes.Color = Colors.Red;
|
348
|
+
|
349
|
+
inkCanvas.Strokes.Add(s);
|
350
|
+
|
351
|
+
|
352
|
+
|
327
353
|
var points = new Point[]
|
328
354
|
|
329
355
|
{
|
@@ -368,6 +394,18 @@
|
|
368
394
|
|
369
395
|
|
370
396
|
|
397
|
+
//var n = new List<Point>();
|
398
|
+
|
399
|
+
//// ここの計算が雑にすらできないw
|
400
|
+
|
401
|
+
//var s = new Stroke(new StylusPointCollection(n));
|
402
|
+
|
403
|
+
//s.DrawingAttributes.Color = Colors.Red;
|
404
|
+
|
405
|
+
//inkCanvas.Strokes.Add(s);
|
406
|
+
|
407
|
+
|
408
|
+
|
371
409
|
var points = new List<Point>();
|
372
410
|
|
373
411
|
for (var i = 0; i <= 360; i += 5)
|
@@ -398,7 +436,7 @@
|
|
398
436
|
|
399
437
|
```
|
400
438
|
|
401
|
-
![アプリ画像](55
|
439
|
+
![アプリ画像](e9fb0504b7be5ad8a91d18096e33a090.png)
|
402
440
|
|
403
441
|
参考
|
404
442
|
|
2
移動・リサイズできちゃうの図
test
CHANGED
@@ -425,3 +425,13 @@
|
|
425
425
|
「じゃあどうすりゃいいの?」ってことですが、わたしはこの手のものは全く興味がないので他の方を参考にしてください^^;
|
426
426
|
|
427
427
|
[Search · wpf paint application](https://github.com/search?q=wpf+paint+application&type=Repositories)
|
428
|
+
|
429
|
+
|
430
|
+
|
431
|
+
---
|
432
|
+
|
433
|
+
|
434
|
+
|
435
|
+
コメントで言及したChildrenに入れたコントロールが、(何もしなくても)移動・リサイズできちゃうの図
|
436
|
+
|
437
|
+
![アプリ画像](a578aef9a514cdfac8a6ee02cd2e60d4.png)
|
1
なんか通じていなそうなので消せてるの図
test
CHANGED
@@ -398,6 +398,8 @@
|
|
398
398
|
|
399
399
|
```
|
400
400
|
|
401
|
+
![アプリ画像](5573a83818836ca5e5b5988461b6838a.png)
|
402
|
+
|
401
403
|
参考
|
402
404
|
|
403
405
|
[InkCanvas | HIROs.NET Blog](http://blog.hiros-dot.net/?page_id=3413)
|