期末作業
應用程式(App)
TouchAndDrawCircles(觸控繪製圖)
資工三乙 499g0027 吳俊磊
介面操作
這是一個 App 應用程式,功能是你可以隨意地畫
出不同大小的圓,而且每次顏色都會不同,亂數
選到的顏色,可以在上面創作,非常有趣!
執行畫面:
程式部分:
MainPage.xaml.cs 部分
using System;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
namespace TouchAndDrawCircles
{
public partial class MainPage : PhoneApplicationPage
{
Random rand = new Random();
bool isDrawing, isDragging;
Path path;
EllipseGeometry ellipseGeo;
public MainPage()
{
InitializeComponent();
}
protected override void OnManipulationStarted(ManipulationStartedEventArgs args)
{
if (isDrawing || isDragging)
return;
if (args.OriginalSource is Path)
{
ellipseGeo = (args.OriginalSource as Path).Data as EllipseGeometry;
isDragging = true;
args.ManipulationContainer = ContentPanel;
args.Handled = true;
}
else if (args.OriginalSource == ContentPanel)
{
ellipseGeo = new EllipseGeometry();
ellipseGeo.Center = args.ManipulationOrigin;
path = new Path();
path.Stroke = this.Resources["PhoneForegroundBrush"] as Brush;
path.Data = ellipseGeo;
ContentPanel.Children.Add(path);
isDrawing = true;
args.Handled = true;
}
base.OnManipulationStarted(args);
}
protected override void OnManipulationDelta(ManipulationDeltaEventArgs args)
{
if (isDragging)
{
Point center = ellipseGeo.Center;
center.X += args.DeltaManipulation.Translation.X;
center.Y += args.DeltaManipulation.Translation.Y;
ellipseGeo.Center = center;
args.Handled = true;
}
else if (isDrawing)
{
Point translation = args.CumulativeManipulation.Translation;
double radius = Math.Max(Math.Abs(translation.X),
Math.Abs(translation.Y));
ellipseGeo.RadiusX = radius;
ellipseGeo.RadiusY = radius;
args.Handled = true;
}
base.OnManipulationDelta(args);
}
protected override void OnManipulationCompleted(ManipulationCompletedEventArgs args)
{
if (isDragging)
{
isDragging = false;
args.Handled = true;
}
else if (isDrawing)
{
Color clr = Color.FromArgb(255, (byte)rand.Next(256),
(byte)rand.Next(256),
(byte)rand.Next(256));
path.Fill = new SolidColorBrush(clr);
isDrawing = false;
args.Handled = true;
}
base.OnManipulationCompleted(args);
}
}
}
App.xaml.cs 部分
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
namespace TouchAndDrawCircles
{
public partial class App : Application
{
public PhoneApplicationFrame RootFrame { get; private set; }
public App()
{
UnhandledException += Application_UnhandledException;
if (System.Diagnostics.Debugger.IsAttached)
{
}
InitializeComponent();
InitializePhoneApplication();
}
private void Application_Launching(object sender, LaunchingEventArgs e)
{
}
private void Application_Activated(object sender, ActivatedEventArgs e)
{
}
private void Application_Deactivated(object sender, DeactivatedEventArgs e)
{
}
private void Application_Closing(object sender, ClosingEventArgs e)
{
}
private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
{
if (System.Diagnostics.Debugger.IsAttached)
{
System.Diagnostics.Debugger.Break();
}
}
private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs
e)
{
if (System.Diagnostics.Debugger.IsAttached)
{
System.Diagnostics.Debugger.Break();
}
}
#region Phone application initialization
private bool phoneApplicationInitialized = false;
private void InitializePhoneApplication()
{
if (phoneApplicationInitialized)
return;
RootFrame = new PhoneApplicationFrame();
RootFrame.Navigated += CompleteInitializePhoneApplication;
RootFrame.NavigationFailed += RootFrame_NavigationFailed;
phoneApplicationInitialized = true;
}
private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
{
if (RootVisual != RootFrame)
RootVisual = RootFrame;
RootFrame.Navigated -= CompleteInitializePhoneApplication;
}
#endregion
}
}