mirror of
https://github.com/wmjordan/PDFPatcher.git
synced 2026-10-18 13:42:28 +08:00
WMJ
259 lines
9.9 KiB
C#
259 lines
9.9 KiB
C#
using System;
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using System.ComponentModel;
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using System.IO;
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using System.Windows.Forms;
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using iTextSharp.text.pdf;
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using MuPDF;
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using PDFPatcher.Common;
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namespace PDFPatcher.Functions
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{
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[ToolboxItem(false)]
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public partial class RenderImageControl : FunctionControl, IResettableControl, IDocumentSource
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{
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public override string FunctionName => "转换页面为图片";
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public override System.Drawing.Bitmap IconImage => Properties.Resources.RenderDocument;
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public RenderImageControl() {
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InitializeComponent();
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this.OnFirstLoad(OnLoad);
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}
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public string DocumentPath => _SourceFileControl.Text;
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void OnLoad() {
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_SourceFileControl.BrowseSelectedFiles += (object sender, EventArgs e) => {
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if (_AutoOutputDirBox.Checked == false) {
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return;
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}
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var sourceFile = _SourceFileControl.FirstFile;
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if (sourceFile.Length > 0) {
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_TargetBox.Text = FileHelper.CombinePath(Path.GetDirectoryName(sourceFile), Path.GetFileNameWithoutExtension(sourceFile));
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}
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};
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_AutoOutputDirBox.CheckedChanged += (object sender, EventArgs e) => { AppContext.ImageRenderer.AutoOutputFolder = _AutoOutputDirBox.Checked; };
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_ResolutionBox.TextChanged += (s, args) => {
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var v = _ResolutionBox.Text.ToSingle();
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if (v <= 0) {
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_ResolutionBox.Text = "72";
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}
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else if (v > 3000) {
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_ResolutionBox.Text = "3000";
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}
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};
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_ExtractPageImageWidthBox.GotFocus += (s, args) => { _SpecificWidthBox.Checked = true; };
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_ExtractPageRatioBox.GotFocus += (s, args) => { _SpecificRatioBox.Checked = true; };
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ShowFileMaskPreview();
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AppContext.MainForm.SetTooltip(_SourceFileControl.FileList, "包含图片的 PDF 文件路径");
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AppContext.MainForm.SetTooltip(_TargetBox, "放置输出图片的文件夹路径");
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AppContext.MainForm.SetTooltip(_ExtractPageRangeBox, "需要提取图片的页码范围，不指定页码范围时提取所有页面的图片");
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AppContext.MainForm.SetTooltip(_FileNameMaskBox, "提取的图片文件名按其所在页码数字命名，可在此修改命名规则\n“0000”：不足四位用0补足四位\n“0”：文件名按实际页码，不用0补位\n可用英文双引号将文本括起来（如“\"相约2000\"0”，前面的“2000”不会被解释为占位符）");
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AppContext.MainForm.SetTooltip(_VerticalFlipImageBox, "某些 PDF 文件导出的图片上下颠倒，可用此选项将其还原");
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AppContext.MainForm.SetTooltip(_InvertColorBox, "翻转 PNG 和 TIFF 黑白图片的颜色");
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AppContext.MainForm.SetTooltip(_QuantizeBox, "尽量减少导出图片所用的颜色，从而减小图片占用的磁盘空间");
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AppContext.MainForm.SetTooltip(_SpecificWidthBox, "指定输出图片的宽度（单位为像素，图片的高度将按比例缩放）");
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AppContext.MainForm.SetTooltip(_SpecificRatioBox, "指定输出图片的放大倍数");
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AppContext.MainForm.SetTooltip(_ExtractPageImageWidthBox, "指定输出图片的宽度（单位为像素，图片的高度将按比例缩放），宽度为 0 时相当于按 1：1 比例输出");
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Reload();
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}
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public override void ExecuteCommand(string commandName, params string[] parameters) {
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switch (commandName) {
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case Commands.Open:
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_SourceFileControl.BrowseFile();
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break;
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default:
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base.ExecuteCommand(commandName, parameters);
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break;
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}
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}
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public void Reset() {
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AppContext.ImageRenderer = new ImageRendererOptions();
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Reload();
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}
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public void Reload() {
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var o = AppContext.ImageRenderer;
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_AutoOutputDirBox.Checked = o.AutoOutputFolder;
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_ColorSpaceRgbBox.Checked = !(_ColorSpaceGrayBox.Checked = o.ColorSpace == ColorspaceKind.Gray);
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_FileNameMaskBox.Text = o.FileMask;
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_HorizontalFlipImageBox.Checked = o.HorizontalFlipImages;
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_HideAnnotationsBox.Checked = o.HideAnnotations;
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_ImageFormatBox.SelectedIndex = ValueHelper.MapValue(o.FileFormat, new ImageFormat[] { ImageFormat.Png, ImageFormat.Jpeg, ImageFormat.Tiff }, new int[] { 0, 1, 2 }, 0);
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_InvertColorBox.Checked = o.InvertColor;
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if (o.JpegQuality > 0 && o.JpegQuality <= 100) {
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_JpegQualityBox.Text = o.JpegQuality.ToText();
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}
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else {
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o.JpegQuality = 75;
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_JpegQualityBox.Text = "75";
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}
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_QuantizeBox.Checked = o.Quantize;
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_ResolutionBox.Text = o.Dpi.ToText();
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_RotationBox.SelectedIndex = ValueHelper.MapValue(o.Rotation, new int[] { 0, 90, 180, 270 }, new int[] { 0, 1, 2, 3 }, 0);
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_SpecificRatioBox.Checked = !o.UseSpecificWidth;
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_SpecificWidthBox.Checked = o.UseSpecificWidth;
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_VerticalFlipImageBox.Checked = o.VerticalFlipImages;
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_ExtractPageImageWidthBox.SetValue(o.ImageWidth);
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_ExtractPageRatioBox.SetValue(o.ScaleRatio);
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}
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void _BrowseTargetPdfButton_Click(object sender, EventArgs e) {
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var sourceFile = _SourceFileControl.Text;
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if (_TargetBox.Text.Length > 0) {
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_SaveImageBox.SelectedPath = Path.GetDirectoryName(_TargetBox.Text);
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}
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else if (sourceFile.Length > 0) {
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_SaveImageBox.SelectedPath = Path.GetDirectoryName(sourceFile);
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}
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if (_SaveImageBox.ShowDialog() == DialogResult.OK) {
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_TargetBox.Text = _SaveImageBox.SelectedPath;
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}
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}
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void _ExtractButton_Click(object sender, EventArgs e) {
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if (File.Exists(_SourceFileControl.FirstFile) == false) {
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Common.FormHelper.ErrorBox(Messages.SourceFileNotFound);
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return;
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}
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if (_TargetBox.Text.IsNullOrWhiteSpace()) {
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_BrowseTargetPdfButton_Click(_BrowseTargetPdfButton, e);
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if (_TargetBox.Text.IsNullOrWhiteSpace()) {
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return;
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}
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}
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AppContext.SourceFiles = _SourceFileControl.Files;
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if (_SourceFileControl.Files.Length == 1) {
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_SourceFileControl.FileList.AddHistoryItem();
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_TargetBox.AddHistoryItem();
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}
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AppContext.MainForm.ResetWorker();
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var worker = AppContext.MainForm.GetWorker();
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worker.DoWork += (dummy, arg) => {
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var a = arg.Argument as object[];
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var files = a[0] as string[];
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var options = a[1] as ImageRendererOptions;
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FilePath target = new FilePath(options.ExtractImagePath).Normalize();
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options.ExtractImagePath = target;
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if (target.HasExtension(Constants.FileExtensions.Pdf)) {
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using (var f = target.OpenFileWriter(true)) {
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var doc = new iTextSharp.text.Document();
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using (var w = PdfWriter.GetInstance(doc, f)) {
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doc.Open();
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doc.AddCreator(Application.ProductName + " " + Application.ProductVersion);
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doc.SetMargins(0, 0, 0, 0);
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foreach (var file in files) {
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Processor.Worker.RenderPagesToPdf(file, options, doc);
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Tracker.IncrementTotalProgress();
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if (AppContext.Abort) {
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return;
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}
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}
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doc.Close();
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}
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}
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return;
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}
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if (files.Length > 1) {
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var ep = options.ExtractImagePath;
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foreach (var file in files) {
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options.ExtractImagePath = new FilePath(ep).Combine(new FilePath(file).FileNameWithoutExtension).Normalize();
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Processor.Worker.RenderPages(file, options);
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Tracker.IncrementTotalProgress();
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if (AppContext.Abort) {
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return;
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}
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}
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}
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else {
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Processor.Worker.RenderPages(files[0], options);
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}
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};
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worker.RunWorkerCompleted += (dummy, arg) => { AppContext.ImageExtracter.OutputPath = _ExtractPageRangeBox.Text; };
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var option = AppContext.ImageRenderer;
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option.ColorSpace = _ColorSpaceRgbBox.Checked ? ColorspaceKind.Rgb : ColorspaceKind.Gray;
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option.ExtractPageRange = _ExtractPageRangeBox.Text;
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option.ExtractImagePath = _RenderToPdfBox.Checked
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? GetRenderedPdfFileName(_TargetBox.Text)
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: _TargetBox.Text;
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option.FileMask = _FileNameMaskBox.Text;
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option.HideAnnotations = _HideAnnotationsBox.Checked;
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option.HorizontalFlipImages = _HorizontalFlipImageBox.Checked;
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option.InvertColor = _InvertColorBox.Checked;
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option.FileFormat = ValueHelper.MapValue(_ImageFormatBox.SelectedIndex, new int[] { 0, 1, 2 }, new ImageFormat[] { ImageFormat.Png, ImageFormat.Jpeg, ImageFormat.Tiff }, ImageFormat.Png);
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option.ImageWidth = (int)_ExtractPageImageWidthBox.Value;
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option.JpegQuality = _JpegQualityBox.Text.TryParse(out int j)
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? j > 0 && j <= 100 ? j : 75
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: 75;
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option.Quantize = _QuantizeBox.Checked;
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option.Dpi = _ResolutionBox.Text.ToSingle();
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option.Rotation = _RotationBox.SelectedIndex * 90;
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option.ScaleRatio = (float)_ExtractPageRatioBox.Value;
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option.UseSpecificWidth = _SpecificWidthBox.Checked;
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option.VerticalFlipImages = _VerticalFlipImageBox.Checked;
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worker.RunWorkerAsync(
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new object[] {
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AppContext.SourceFiles, option
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});
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option = null;
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}
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static string GetRenderedPdfFileName(string target) {
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var p = new FilePath(target).Normalize();
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if (p.HasExtension(Constants.FileExtensions.Pdf) == false) {
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target = p.Combine(new FilePath(AppContext.SourceFiles[0]).FileName);
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}
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foreach (var f in AppContext.SourceFiles) {
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if (new FilePath(f).Equals(target)) {
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return FileHelper.GetNewFileNameFromSourceFile(target, Constants.FileExtensions.Pdf);
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}
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}
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return target;
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}
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#region IDefaultButtonControl 成员
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public override Button DefaultButton => _ExtractButton;
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#endregion
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void _GoToImportImageLink_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) {
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AppContext.MainForm.SelectFunctionList(Function.Patcher);
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}
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void _FileNameMaskBox_TextChanged(object sender, EventArgs e) {
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ShowFileMaskPreview();
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}
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void ShowFileMaskPreview() {
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try {
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var previews = new string[7];
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var f = _FileNameMaskBox.Text;
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previews[0] = 1.ToString(f) + ".jpg";
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previews[1] = 2.ToString(f) + ".jpg";
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previews[2] = 3.ToString(f) + ".jpg ...";
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previews[3] = "\n" + 11.ToString(f) + ".jpg";
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previews[4] = 12.ToString(f) + ".jpg";
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previews[5] = 13.ToString(f) + ".jpg ...";
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previews[6] = 100.ToString(f) + ".jpg";
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_FileMaskPreviewBox.Text = String.Join(" ", previews);
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}
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catch (Exception) {
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_FileMaskPreviewBox.Text = "文件名掩码无效。";
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}
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}
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void Control_Show(object sender, EventArgs e) {
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if (Visible && AppContext.MainForm != null) {
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_TargetBox.Contents = AppContext.Recent.Folders;
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}
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}
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}
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}
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