mirror of https://github.com/fadden/6502bench.git
113 lines
3.4 KiB
C#
113 lines
3.4 KiB
C#
/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Windows.Controls;
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using System.Windows.Media.Imaging;
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using System.Windows.Threading;
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namespace CommonWPF {
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/// <summary>
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/// The Frame Animation control provides a simple way to display a series of images.
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/// (Think of an animated GIF.)
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///
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/// Set Bitmaps and IntervalMsec, then call Start.
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/// </summary>
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public partial class FrameAnimationControl : UserControl {
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/// <summary>
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/// List of bitmaps to be displayed.
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/// </summary>
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public List<BitmapSource> Bitmaps {
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get { return mBitmaps; }
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set {
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if (value == null || value.Count == 0) {
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throw new ArgumentException("Invalid bitmap list");
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}
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mBitmaps = value;
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if (mNext >= value.Count) {
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mNext = 0;
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}
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}
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}
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private List<BitmapSource> mBitmaps;
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/// <summary>
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/// How long to wait before showing next bitmap.
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/// </summary>
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public int IntervalMsec {
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get { return mIntervalMsec; }
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set {
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if (value < 1) {
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throw new ArgumentException("Invalid interval " + value);
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}
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mIntervalMsec = value;
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mTimer.Interval = TimeSpan.FromMilliseconds(value);
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}
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}
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private int mIntervalMsec = 100;
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/// <summary>
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/// True if the animation is currently running.
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/// </summary>
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public bool IsRunning {
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get { return mTimer.IsEnabled; }
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}
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/// <summary>
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/// Index of next image to display.
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/// </summary>
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private int mNext;
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/// <summary>
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/// Dispatcher-linked timer object.
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/// </summary>
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private DispatcherTimer mTimer;
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/// <summary>
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/// Constructor, invoked from XAML.
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/// </summary>
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public FrameAnimationControl() {
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InitializeComponent();
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mTimer = new DispatcherTimer(DispatcherPriority.Render);
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mTimer.Interval = TimeSpan.FromMilliseconds(IntervalMsec);
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mTimer.Tick += Tick;
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}
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public void Start() {
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if (mBitmaps == null) {
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throw new InvalidOperationException("Must set bitmaps before starting");
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}
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Tick(null, null); // show something immediately
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mTimer.Start();
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}
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public void Stop() {
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mTimer.Stop();
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}
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private void Tick(object sender, EventArgs e) {
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if (mNext >= mBitmaps.Count) {
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mNext = 0;
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}
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theImage.Source = mBitmaps[mNext];
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mNext++;
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}
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}
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}
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