public void Save(Stream systemStream, Direct2DImageFormat format, string text, string faceName, float fontSize, out int width, out int height)
{
#if BENCHMARK
using (var handler = Benchmark.Instance.Start("DirectWrite", "Save"))
#endif
using (var layout = new TextLayout(factoryManager.DwFactory, text, new TextFormat(factoryManager.DwFactory, faceName, fontSize * 1.3f), 4000, 4000))
{
width = (int)Math.Ceiling(layout.Metrics.WidthIncludingTrailingWhitespace);
height = (int)Math.Ceiling(layout.Metrics.Height);
using (var wicBitmap = new SharpDX.WIC.Bitmap(factoryManager.WicFactory, width, height, SharpDX.WIC.PixelFormat.Format32bppPRGBA, BitmapCreateCacheOption.CacheOnLoad))
{
var renderTargetProperties = new RenderTargetProperties(RenderTargetType.Default,
new SharpDX.Direct2D1.PixelFormat(Format.R8G8B8A8_UNorm, SharpDX.Direct2D1.AlphaMode.Unknown), imageDpi, imageDpi, RenderTargetUsage.None, FeatureLevel.Level_DEFAULT);
using (var renderTarget = new WicRenderTarget(factoryManager.D2DFactory, wicBitmap, renderTargetProperties))
using (var brush = new SolidColorBrush(renderTarget, SharpDX.Color.White))
using (var encoder = new BitmapEncoder(factoryManager.WicFactory, Direct2DConverter.ConvertImageFormat(format)))
{
renderTarget.BeginDraw();
renderTarget.Clear(new Color4(1, 1, 1, 0));
renderTarget.DrawTextLayout(Vector2.Zero, layout, brush);
renderTarget.EndDraw();
var stream = new WICStream(factoryManager.WicFactory, systemStream);
encoder.Initialize(stream);
using (var bitmapFrameEncode = new BitmapFrameEncode(encoder))
{
bitmapFrameEncode.Initialize();
bitmapFrameEncode.SetSize(width, height);
bitmapFrameEncode.WriteSource(wicBitmap);
bitmapFrameEncode.Commit();
}
encoder.Commit();
}
}
}
}
protected override void DrawOntoOutputTarget(WicRenderTarget target)
{
foreach (var text in ItemArray)
{
var location = ImagePlacement[text.Key];
var t = text.Value;
using (var brush = new SolidColorBrush(target, t.Background))
target.FillRectangle(location, brush);
using (var brush = new SolidColorBrush(target, t.Foreground))
target.DrawTextLayout(new Vector2(location.Left + text.Value.Padding.X, location.Top + text.Value.Padding.Y),
t.TextLayout, brush, DrawTextOptions.None);
}
}
internal CCTexture2D CreateTextSprite(string text, CCFontDefinition textDefinition)
{
if (string.IsNullOrEmpty(text))
{
return(new CCTexture2D());
}
int imageWidth;
int imageHeight;
var textDef = textDefinition;
var contentScaleFactorWidth = CCLabel.DefaultTexelToContentSizeRatios.Width;
var contentScaleFactorHeight = CCLabel.DefaultTexelToContentSizeRatios.Height;
textDef.FontSize *= (int)contentScaleFactorWidth;
textDef.Dimensions.Width *= contentScaleFactorWidth;
textDef.Dimensions.Height *= contentScaleFactorHeight;
bool hasPremultipliedAlpha;
var font = CreateFont(textDef.FontName, textDef.FontSize);
var _currentFontSizeEm = textDef.FontSize;
var _currentDIP = ConvertPointSizeToDIP(_currentFontSizeEm);
var fontColor = textDef.FontFillColor;
var fontAlpha = textDef.FontAlpha;
var foregroundColor = new Color4(fontColor.R / 255.0f,
fontColor.G / 255.0f,
fontColor.B / 255.0f,
fontAlpha / 255.0f);
// alignment
var horizontalAlignment = textDef.Alignment;
var verticleAlignement = textDef.LineAlignment;
var textAlign = (CCTextAlignment.Right == horizontalAlignment) ? TextAlignment.Trailing
: (CCTextAlignment.Center == horizontalAlignment) ? TextAlignment.Center
: TextAlignment.Leading;
var paragraphAlign = (CCVerticalTextAlignment.Bottom == vertAlignment) ? ParagraphAlignment.Far
: (CCVerticalTextAlignment.Center == vertAlignment) ? ParagraphAlignment.Center
: ParagraphAlignment.Near;
// LineBreak
var lineBreak = (CCLabelLineBreak.Character == textDef.LineBreak) ? WordWrapping.Wrap
: (CCLabelLineBreak.Word == textDef.LineBreak) ? WordWrapping.Wrap
: WordWrapping.NoWrap;
// LineBreak
// TODO: Find a way to specify the type of line breaking if possible.
var dimensions = new CCSize(textDef.Dimensions.Width, textDef.Dimensions.Height);
var layoutAvailable = true;
if (dimensions.Width <= 0)
{
dimensions.Width = 8388608;
layoutAvailable = false;
}
if (dimensions.Height <= 0)
{
dimensions.Height = 8388608;
layoutAvailable = false;
}
var fontName = font.FontFamily.FamilyNames.GetString(0);
var textFormat = new TextFormat(FactoryDWrite, fontName,
_currentFontCollection, FontWeight.Regular, FontStyle.Normal, FontStretch.Normal, _currentDIP);
textFormat.TextAlignment = textAlign;
textFormat.ParagraphAlignment = paragraphAlign;
var textLayout = new TextLayout(FactoryDWrite, text, textFormat, dimensions.Width, dimensions.Height);
var boundingRect = new RectangleF();
// Loop through all the lines so we can find our drawing offsets
var textMetrics = textLayout.Metrics;
var lineCount = textMetrics.LineCount;
// early out if something went wrong somewhere and nothing is to be drawn
if (lineCount == 0)
{
return(new CCTexture2D());
}
// Fill out the bounding rect width and height so we can calculate the yOffset later if needed
boundingRect.X = 0;
boundingRect.Y = 0;
boundingRect.Width = textMetrics.Width;
boundingRect.Height = textMetrics.Height;
if (!layoutAvailable)
{
if (dimensions.Width == 8388608)
{
dimensions.Width = boundingRect.Width;
}
if (dimensions.Height == 8388608)
{
dimensions.Height = boundingRect.Height;
}
}
imageWidth = (int)dimensions.Width;
imageHeight = (int)dimensions.Height;
// Recreate our layout based on calculated dimensions so that we can draw the text correctly
// in our image when Alignment is not Left.
if (textAlign != TextAlignment.Leading)
{
textLayout.MaxWidth = dimensions.Width;
textLayout.MaxHeight = dimensions.Height;
}
// Line alignment
var yOffset = (CCVerticalTextAlignment.Bottom == verticleAlignement ||
boundingRect.Bottom >= dimensions.Height) ? dimensions.Height - boundingRect.Bottom // align to bottom
: (CCVerticalTextAlignment.Top == verticleAlignement) ? 0 // align to top
: (imageHeight - boundingRect.Bottom) * 0.5f; // align to center
SharpDX.WIC.Bitmap sharpBitmap = null;
WicRenderTarget sharpRenderTarget = null;
SolidColorBrush solidBrush = null;
try
{
// Select our pixel format
var pixelFormat = SharpDX.WIC.PixelFormat.Format32bppPRGBA;
// create our backing bitmap
sharpBitmap = new SharpDX.WIC.Bitmap(FactoryImaging, imageWidth, imageHeight, pixelFormat, BitmapCreateCacheOption.CacheOnLoad);
// Create the render target that we will draw to
sharpRenderTarget = new WicRenderTarget(Factory2D, sharpBitmap, new RenderTargetProperties());
// Create our brush to actually draw with
solidBrush = new SolidColorBrush(sharpRenderTarget, foregroundColor);
// Begin the drawing
sharpRenderTarget.BeginDraw();
if (textDefinition.isShouldAntialias)
{
sharpRenderTarget.AntialiasMode = AntialiasMode.Aliased;
}
// Clear it
sharpRenderTarget.Clear(TransparentColor);
// Draw the text to the bitmap
sharpRenderTarget.DrawTextLayout(new Vector2(boundingRect.X, yOffset), textLayout, solidBrush);
// End our drawing which will commit the rendertarget to the bitmap
sharpRenderTarget.EndDraw();
// Debugging purposes
//var s = "Label4";
//SaveToFile(@"C:\Xamarin\" + s + ".png", _bitmap, _renderTarget);
// The following code creates a .png stream in memory of our Bitmap and uses it to create our Textue2D
Texture2D tex = null;
using (var memStream = new MemoryStream())
{
using (var encoder = new PngBitmapEncoder(FactoryImaging, memStream))
using (var frameEncoder = new BitmapFrameEncode(encoder))
{
frameEncoder.Initialize();
frameEncoder.WriteSource(sharpBitmap);
frameEncoder.Commit();
encoder.Commit();
}
// Create the Texture2D from the png stream
tex = Texture2D.FromStream(CCDrawManager.SharedDrawManager.XnaGraphicsDevice, memStream);
}
// Return our new CCTexture2D created from the Texture2D which will have our text drawn on it.
return(new CCTexture2D(tex));
}
catch (Exception exc)
{
CCLog.Log("CCLabel-Windows: Unable to create the backing image of our text. Message: {0}", exc.StackTrace);
}
finally
{
if (sharpBitmap != null)
{
sharpBitmap.Dispose();
sharpBitmap = null;
}
if (sharpRenderTarget != null)
{
sharpRenderTarget.Dispose();
sharpRenderTarget = null;
}
if (solidBrush != null)
{
solidBrush.Dispose();
solidBrush = null;
}
if (textFormat != null)
{
textFormat.Dispose();
textFormat = null;
}
if (textLayout != null)
{
textLayout.Dispose();
textLayout = null;
}
}
// If we have reached here then something has gone wrong.
return(new CCTexture2D());
}
/// <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;
}
}