用WPF窗体打造个性化界面的图片浏览器

原文:用WPF窗体打造个性化界面的图片浏览器

本文使用WPF窗体(XAML及C#)与Win Form控件(FolderBrowserDialog)结合的方式, 演示制作了一个简易漂亮的WPF图片浏览器。

首先看看运行中的样子:

 XAML源码:
<Window x:Class="BrawDraw.Com.FilmEffect.PhotoViewer"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="684" Width="643">
    <Canvas Width="612" Height="623">
<!-- 胶片效果的界面XAML -->
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<!-- 图片显示,这里设置了一个初始的图片文件路径, 根据需要进行改写 -->
            <Image Source="E:/WPF_Book/Chapter 20/FilmEffect/HuangXiaoLinPhoto05.JPG" Canvas.Left="12" Canvas.Top="92" Height="432" Name="imageBox" Stretch="Uniform" Width="418" />

<!-- 用于选择图片的ListBox -->
            <ListBox Canvas.Left="444" Canvas.Top="57" Height="431" Name="listBoxPhotos" Width="168"  SelectionChanged="listBoxPhotos_SelectionChanged" />
        </Canvas>

<!-- CheckBox及按钮 -->
        <CheckBox Canvas.Left="444" Canvas.Top="35" Height="16" Name="rBtnIncludeChild" Width="120">Include Sub-Dir</CheckBox>
        <Button Canvas.Left="444" Canvas.Top="4.7" Height="23" Name="btnSelectFolder" Width="101" Click="btnSelectFolder_Click">选择图片文件夹</Button>
    </Canvas>
</Window>

对应的C#源码:
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Forms;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace BrawDraw.Com.FilmEffect
{
    /// <summary>
    /// Interaction logic for PhotoViewer.xaml
    /// </summary>
    public partial class PhotoViewer :  Window
    {
        public PhotoViewer()
        {
            InitializeComponent();
        }

        string selectedPath = string.Empty;
        string getFilesFilter = "*.jpg;*.jpeg;*.jpe;*.gif;*.bmp;*.png;";

        private void btnSelectFolder_Click(object sender, RoutedEventArgs e)
        {
            // 这里使用了Window Forms中的文件夹选取对话框
            FolderBrowserDialog dlgFolder = new FolderBrowserDialog();

            dlgFolder.SelectedPath = @"C:/Photo_Frame/BurnedDisk";
            dlgFolder.RootFolder = Environment.SpecialFolder.MyComputer;

           if (System.Windows.Forms.DialogResult.OK == dlgFolder.ShowDialog())
            {
                selectedPath = dlgFolder.SelectedPath;
                // 使用OpenFilesDirs()读取选定文件夹下的所有图片,如果选择包含子目录,则同时读入所有子目录的图片
                OpenFilesDirs(selectedPath);
            }
        }

        private void OpenFilesDirs(string openFilePath)
        {
            string[] arrDirs = Directory.GetDirectories(openFilePath);
            string[] arrFilter = getFilesFilter.Split(';');

            System.IO.DirectoryInfo dirInfo =
                new System.IO.DirectoryInfo(openFilePath);

            for (int i = 0; i < arrFilter.Length; i++)
            {
                System.IO.FileInfo[] files = dirInfo.GetFiles(arrFilter[i]);

                if (files != null)
                {
                    foreach (System.IO.FileInfo file in files)
                    {
                        listBoxPhotos.Items.Add(file.FullName);
                    }
                }
            }

            if ((bool)rBtnIncludeChild.IsChecked)
            {
                if (arrDirs.Length != 0)
                {
                    for (int i = 0; i < arrDirs.Length; i++)
                    {
                         // 递归读取子目录
                        OpenFilesDirs(openFilePath + "//" + System.IO.Path.GetFileName(arrDirs[i]));
                    }
                }
                else
                    return;
            }
        }

        private void listBoxPhotos_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            // 由于有些图片暂时仍无法使用WPF的图片解码器进行读取,所以以下的try{}catch(){}语句是必要的
            try
            {
                imageBox.Source = new BitmapImage(new Uri(listBoxPhotos.SelectedValue.ToString(), UriKind.RelativeOrAbsolute));
            }
            catch (Exception exc)
            {
                // 这里使用了一个WPF Window进行错误显示, 如有时间的话,  还可以把它做得更漂亮些.
                Window win = new Window();
                win.Title = "Error!";
                win.Content = exc.Message + ". File name is " + listBoxPhotos.SelectedValue.ToString() ;
                win.ShowDialog();
            }
        }

    }
}

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