public void StartGenerate(RssInfo rssInfo, RssMedia rssMedia, out List <System.Drawing.Image> imgList)
{
imgList = new List <System.Drawing.Image>();
ImageObj obj = new ImageObj(rssInfo, rssMedia);
Thread thread = new Thread(GetImageFromRss);
try
{
threadDic.Add(rssMedia.CachePath, thread);
thread.Start(obj);
}
catch (ArgumentException aex)
{
Trace.WriteLine("rss生成图片线程遇到bug：" + aex.Message);
}
}
/// <summary>
/// 从rss解析到每一页中每一行的数据
/// </summary>
/// <param name="channel"></param>
/// <returns></returns>
private List <Page> GetPageListFromRss(RssInfo rssInfo, RssMedia rssMedia)
{
List <Paragraph> paragraphs = new List <Paragraph>();
foreach (RssItemInfo item in rssInfo.RssItem)
{
if (item != null)
{
if (rssMedia.IsShowRssTitle)
{
paragraphs.AddRange(GetCharacter(GetCleanString(item.Title),
rssMedia.RssTitleProp.TextFont,
rssMedia.RssTitleProp.TextColor,
RssBodyType.Title));
}
if (rssMedia.IsShowRssPublishTime)
{
paragraphs.AddRange(GetCharacter(GetCleanString(item.PubDate),
rssMedia.RssPublishTimeProp.TextFont,
rssMedia.RssPublishTimeProp.TextColor,
RssBodyType.Time));
}
if (rssMedia.IsShowRssBody)
{
if (item.Description != null)
{
foreach (var v in item.Description)
{
paragraphs.AddRange(GetCharacter(GetCleanString(v.content),
rssMedia.RssBodyProp.TextFont,
rssMedia.RssPublishTimeProp.TextColor,
RssBodyType.Body));
}
}
}
}
}
List <Page> pageList = GetPageList(paragraphs, pageWidth, pageHeight, rssMedia);
paragraphs.Clear();
paragraphs = null;
return(pageList);
}
public ImageObj(RssInfo rssInfo, RssMedia rssMedia)
{
this.rssInfo = rssInfo;
this.rssMedia = rssMedia;
}
/// <summary>
/// 从rss生成图像
/// </summary>
/// <param name="channel">从rss源获得的数据</param>
/// <param name="path">保存图像的路径</param>
private void GetImageFromRss(object obj)
{
ImageObj image = (ImageObj)obj;
RssInfo rssInfo = image.rssInfo;
RssMedia rssMedia = image.rssMedia;
string fileName = "";
if (rssInfo == null || rssMedia == null)
{
return;
}
List <Page> pages = GetPageListFromRss(rssInfo, rssMedia);
var wicFactory = new ImagingFactory();
var d2dFactory = new SharpDX.Direct2D1.Factory();
var dwFactory = new SharpDX.DirectWrite.Factory();
var renderTargetProperties = new RenderTargetProperties(RenderTargetType.Default,
new SharpDX.Direct2D1.PixelFormat(Format.Unknown, SharpDX.Direct2D1.AlphaMode.Unknown),
0,
0,
RenderTargetUsage.None, FeatureLevel.Level_DEFAULT);
var wicBitmap = new SharpDX.WIC.Bitmap(wicFactory,
pageWidth,
pageHeight,
SharpDX.WIC.PixelFormat.Format32bppBGR,
BitmapCreateCacheOption.CacheOnLoad);
var d2dRenderTarget = new WicRenderTarget(d2dFactory,
wicBitmap,
renderTargetProperties);
d2dRenderTarget.AntialiasMode = AntialiasMode.PerPrimitive;
var solidColorBrush = new SolidColorBrush(d2dRenderTarget,
new SharpDX.Color(this.backgroundColor.R,
this.backgroundColor.G,
this.backgroundColor.B,
this.backgroundColor.A));
var textBodyBrush = new SolidColorBrush(d2dRenderTarget,
new SharpDX.Color(rssMedia.RssBodyProp.
TextColor.R,
rssMedia.RssBodyProp.TextColor.G,
rssMedia.RssBodyProp.TextColor.B,
rssMedia.RssBodyProp.TextColor.A));
var titleColorBrush = new SolidColorBrush(d2dRenderTarget,
new SharpDX.Color(rssMedia.RssTitleProp.TextColor.R,
rssMedia.RssTitleProp.TextColor.G,
rssMedia.RssTitleProp.TextColor.B,
rssMedia.RssTitleProp.TextColor.A));
var publishDateColorBrush = new SolidColorBrush(d2dRenderTarget,
new SharpDX.Color(rssMedia.RssPublishTimeProp.TextColor.R,
rssMedia.RssPublishTimeProp.TextColor.G,
rssMedia.RssPublishTimeProp.TextColor.B,
rssMedia.RssPublishTimeProp.TextColor.A));
TextLayout textLayout;
try
{
int count = 0;
foreach (Page page in pages)
{
d2dRenderTarget.BeginDraw();
d2dRenderTarget.Clear(new SharpDX.Color(this.backgroundColor.R,
this.backgroundColor.G,
this.backgroundColor.B,
this.backgroundColor.A));
foreach (Line line in page.lines)
{
foreach (Block block in line.content)
{
TextFormat textFormat = new TextFormat(dwFactory,
block.font.FontFamily.Name,
block.font.Size);
textLayout = new TextLayout(dwFactory,
block.content,
textFormat,
block.width,
block.height);
switch (block.type)
{
case RssBodyType.Title:
textLayout.SetUnderline(rssMedia.RssTitleProp.TextFont.Underline,
new TextRange(0, block.content.Length));
textLayout.SetFontStyle(rssMedia.RssTitleProp.TextFont.Italic ? FontStyle.Italic : FontStyle.Normal,
new TextRange(0, block.content.Length));
textLayout.SetFontWeight(rssMedia.RssTitleProp.TextFont.Bold ? FontWeight.Bold : FontWeight.Normal,
new TextRange(0, block.content.Length));
d2dRenderTarget.DrawTextLayout(new Vector2(block.left, block.top), textLayout, titleColorBrush);
break;
case RssBodyType.Time:
textLayout.SetUnderline(rssMedia.RssPublishTimeProp.TextFont.Underline,
new TextRange(0, block.content.Length));
textLayout.SetFontStyle(rssMedia.RssPublishTimeProp.TextFont.Italic ? FontStyle.Italic : FontStyle.Normal,
new TextRange(0, block.content.Length));
textLayout.SetFontWeight(rssMedia.RssPublishTimeProp.TextFont.Bold ? FontWeight.Bold : FontWeight.Normal,
new TextRange(0, block.content.Length));
d2dRenderTarget.DrawTextLayout(new Vector2(block.left, block.top), textLayout, publishDateColorBrush);
break;
case RssBodyType.Body:
textLayout.SetUnderline(rssMedia.RssBodyProp.TextFont.Underline,
new TextRange(0, block.content.Length));
textLayout.SetFontStyle(rssMedia.RssBodyProp.TextFont.Italic ? FontStyle.Italic : FontStyle.Normal,
new TextRange(0, block.content.Length));
textLayout.SetFontWeight(rssMedia.RssBodyProp.TextFont.Bold ? FontWeight.Bold : FontWeight.Normal,
new TextRange(0, block.content.Length));
d2dRenderTarget.DrawTextLayout(new Vector2(block.left, block.top), textLayout, textBodyBrush);
break;
default:
break;
}
textFormat.Dispose();
textFormat = null;
}
}
d2dRenderTarget.EndDraw();
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
fileName = string.Format("{0}{1}.jpg", path, DateTime.Now.Ticks.ToString());
var stream = new WICStream(wicFactory, fileName, NativeFileAccess.Write);
var encoder = new PngBitmapEncoder(wicFactory);
encoder.Initialize(stream);
var bitmapFrameEncode = new BitmapFrameEncode(encoder);
bitmapFrameEncode.Initialize();
bitmapFrameEncode.SetSize(pageWidth, pageHeight);
var pixelFormatGuid = SharpDX.WIC.PixelFormat.FormatDontCare;
bitmapFrameEncode.SetPixelFormat(ref pixelFormatGuid);
bitmapFrameEncode.WriteSource(wicBitmap);
bitmapFrameEncode.Commit();
encoder.Commit();
bitmapFrameEncode.Dispose();
encoder.Dispose();
stream.Dispose();
Console.WriteLine("*********image count is : " + count++);
//发送单个图片生成事件
if (SingleGenerateCompleteEvent != null)
{
SingleGenerateCompleteEvent(fileName);
}
}
//发送生成完成事件
if (GenerateCompleteEvent != null)
{
GenerateCompleteEvent(path);
//停止线程，从字典删除
StopGenerate(rssMedia.CachePath);
}
}
catch (ThreadAbortException aborted)
{
Trace.WriteLine("rss 图片生成线程终止 : " + aborted.Message);
}
catch (Exception ex)
{
Trace.WriteLine("rss 图片生成遇到bug : " + ex.Message);
}
finally
{
wicFactory.Dispose();
d2dFactory.Dispose();
dwFactory.Dispose();
wicBitmap.Dispose();
d2dRenderTarget.Dispose();
solidColorBrush.Dispose();
textBodyBrush.Dispose();
titleColorBrush.Dispose();
publishDateColorBrush.Dispose();
rssInfo.Dispose();
rssMedia.Dispose();
wicFactory = null;
d2dFactory = null;
dwFactory = null;
wicBitmap = null;
d2dRenderTarget = null;
solidColorBrush = null;
textBodyBrush = null;
titleColorBrush = null;
publishDateColorBrush = null;
rssInfo = null;
rssMedia = null;
pages.Clear();
pages = null;
}
}
/// <summary>
/// 由字符段落获得图像页面
/// </summary>
/// <param name="paragraphList"></param>
/// <param name="pageWidth"></param>
/// <param name="pageHeight"></param>
/// <returns></returns>
private List <Page> GetPageList(List <Paragraph> paragraphList, int pageWidth, int pageHeight, RssMedia rssMedia)
{
List <Page> pageList = new List <Page>();
Page page = new Page();
Line line = new Line();
Block block = new Block(0, 0, 0, 0);
if (rssMedia.DisplayType == RssMedia.RssDisplayType.ScrollLeftToRight || rssMedia.DisplayType == RssMedia.RssDisplayType.ScrollRightToLeft)
{
foreach (Paragraph paragraph in paragraphList)
{
if (block.content == null)
{
line = new Line();
block = new Block(0, pageHeight / 2 - paragraph.font.Height, 0, pageHeight / 2);
block.type = paragraph.type;
block.font = paragraph.font;
}
else
{
line.Add(block);
block = new Block(block.right, pageHeight / 2 - paragraph.font.Height, block.right, pageHeight / 2);
block.type = paragraph.type;
block.font = paragraph.font;
}
float characterWidth = 0.0f;
foreach (Character character in paragraph.list)
{
characterWidth = GetCharacterWidth(character);
//该行还能容下该字符
if (block.right + characterWidth < pageWidth)
{
block.Add(character, characterWidth);
}
//该行容不下该字符
else
{
if (block.content != null)
{
line.Add(block);
page.Add(line);
pageList.Add(page);
page = new Page();
line = new Line();
block = new Block(0, pageHeight / 2 - paragraph.font.Height, 0, pageHeight / 2, paragraph.type);
block.font = character.font;
block.Add(character, characterWidth);
}
}
}
}
line.Add(block);
page.Add(line);
pageList.Add(page);
}
else
{
foreach (Paragraph paragraph in paragraphList)
{
if (block.content != null)
{
line.Add(block);
page.Add(line);
}
if (block.bottom + paragraph.font.Size * 4 / 3 < pageHeight)
{
block = new Block(0, block.bottom, 0, block.bottom + paragraph.font.Size * 4 / 3, paragraph.type);
line = new Line();
}
else
{
line.Add(block);
pageList.Add(page);
block = new Block(0, 0, 0, 0, paragraph.type);
line = new Line();
page = new Page();
}
block.font = paragraph.font;
float characterWidth = 0.0f;
foreach (Character character in paragraph.list)
{
characterWidth = GetCharacterWidth(character);
//该行还能容下该字符
if (block.right + characterWidth < pageWidth)
{
block.font = character.font;
block.Add(character, characterWidth);
}
//该行容不下该字符
else
{
//该页能够容下该行
if (block.bottom + character.height < pageHeight)
{
line.Add(block);
page.Add(line);
block = new Block(0, block.bottom, 0, block.bottom + character.height, paragraph.type);
block.font = character.font;
block.Add(character, characterWidth);
line = new Line();
}
//该页容不下该行
else
{
line.Add(block);
page.Add(line);
pageList.Add(page);
page = new Page();
line = new Line();
block = new Block(0, 0, 0, 0, paragraph.type);
block.font = character.font;
block.Add(character, characterWidth);
}
}
}
}
line.Add(block);
page.Add(line);
pageList.Add(page);
}
return(pageList);
}
