mirror of
https://gitee.com/csharpui/CPF.git
synced 2025-11-01 00:46:56 +08:00
364 lines
13 KiB
C#
364 lines
13 KiB
C#
using System;
|
||
using System.Collections.Generic;
|
||
using System.Collections.Concurrent;
|
||
using System.IO;
|
||
using System.Linq;
|
||
using System.Text;
|
||
using CPF.Platform;
|
||
using SkiaSharp;
|
||
using System.Runtime.InteropServices;
|
||
using CPF.Drawing;
|
||
|
||
namespace CPF.Skia
|
||
{
|
||
public class SkiaDrawingFactory : DrawingFactory
|
||
{
|
||
/// <summary>
|
||
/// 可以让字体显示更清晰，不过在透明背景下会有黑边
|
||
/// </summary>
|
||
public bool ClearType { get; set; }
|
||
/// <summary>
|
||
/// 尝试启用GPU加速，普通的界面不建议开启GPU，因为使用GPU加速后，普通界面加速效果不明显，但是内存占用会翻倍，尤其是使用GIF的时候，因为会缓存每一帧。
|
||
/// 需要有正确的显卡驱动配置，依赖OpenGL。Windows上需要开启了Dwm桌面混合（win7不能使用basic主题）的情况下才GPU加速效果。如果出现花屏或者界面不显示情况，请关闭硬件加速。
|
||
/// </summary>
|
||
public override bool UseGPU { get; set; }
|
||
|
||
private static ConcurrentDictionary<FontKey, FontWrapper> _fontFamilies =
|
||
new ConcurrentDictionary<FontKey, FontWrapper>();
|
||
static ConcurrentDictionary<string, SKTypeface> _fonts =
|
||
new ConcurrentDictionary<string, SKTypeface>();
|
||
|
||
public override IBitmapImpl CreateBitmap(int w, int h)
|
||
{
|
||
return new SkiaBitmap(new SKBitmap(w, h));
|
||
}
|
||
|
||
public override IBitmapImpl CreateBitmap(int w, int h, int pitch, PixelFormat pixelFormat, IntPtr data)
|
||
{
|
||
SKColorType sKColorType = SKColorType.Unknown;
|
||
SKAlphaType sKAlphaType = SKAlphaType.Unpremul;
|
||
switch (pixelFormat)
|
||
{
|
||
case PixelFormat.Undefined:
|
||
break;
|
||
case PixelFormat.PRgba:
|
||
sKAlphaType = SKAlphaType.Premul;
|
||
sKColorType = SKColorType.Rgba8888;
|
||
break;
|
||
case PixelFormat.Rgba:
|
||
sKColorType = SKColorType.Rgba8888;
|
||
break;
|
||
case PixelFormat.PBgra:
|
||
sKAlphaType = SKAlphaType.Premul;
|
||
sKColorType = SKColorType.Bgra8888;
|
||
break;
|
||
case PixelFormat.Bgra:
|
||
sKColorType = SKColorType.Bgra8888;
|
||
break;
|
||
case PixelFormat.Rgb565:
|
||
sKColorType = SKColorType.Rgb565;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
SKImageInfo info = new SKImageInfo { Width = w, Height = h, AlphaType = sKAlphaType, ColorType = sKColorType };
|
||
var bitmap = new SKBitmap(info, pitch);
|
||
bitmap.SetPixels(data);
|
||
return new SkiaBitmap(bitmap);
|
||
}
|
||
|
||
public override IBitmapImpl CreateBitmap(Stream stream)
|
||
{
|
||
return new SkiaBitmap(SKBitmap.Decode(stream));
|
||
}
|
||
|
||
public override IBitmapImpl CreateBitmap(Image img)
|
||
{
|
||
if (img.ImageImpl is SkiaBitmap b)
|
||
{
|
||
return new SkiaBitmap(b.Bitmap.Copy());
|
||
}
|
||
else if (img.ImageImpl is SkiaImage i)
|
||
{
|
||
return new SkiaBitmap(i.Image.Copy());
|
||
}
|
||
return null;
|
||
}
|
||
|
||
public override DrawingContext CreateDrawingContext(Bitmap bitmap)
|
||
{
|
||
return new SkiaDrawingContext(bitmap, this);
|
||
}
|
||
|
||
public override DrawingContext CreateDrawingContext(IRenderTarget target)
|
||
{
|
||
return new SkiaDrawingContext(target, this);
|
||
}
|
||
//public override DrawingContext CreateDrawingContext<T>(T Canvas)
|
||
//{
|
||
// return new SkiaDrawingContext((SKCanvas)(object)Canvas, this);
|
||
//}
|
||
|
||
public override IDisposable CreateFont(string fontFamily, float fontSize, FontStyles fontStyle)
|
||
{
|
||
var weight = SKFontStyleWeight.Normal;
|
||
if (fontStyle.HasFlag(FontStyles.Bold))
|
||
{
|
||
weight = SKFontStyleWeight.Bold;
|
||
}
|
||
var slant = SKFontStyleSlant.Upright;
|
||
if (fontStyle.HasFlag(FontStyles.Italic))
|
||
{
|
||
slant = SKFontStyleSlant.Italic;
|
||
}
|
||
if (!_fontFamilies.TryGetValue(new FontKey(weight, slant, fontFamily), out FontWrapper fontWrap))
|
||
{
|
||
if (_fonts.TryGetValue(fontFamily, out var font))
|
||
{
|
||
#if Net4
|
||
SKTypefaceStyle style= SKTypefaceStyle.Normal;
|
||
switch (fontStyle)
|
||
{
|
||
case FontStyles.Bold:
|
||
style = SKTypefaceStyle.Bold;
|
||
break;
|
||
case FontStyles.Italic:
|
||
style = SKTypefaceStyle.Italic;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
fontWrap = new FontWrapper { SKTypeface = SKTypeface.FromTypeface(font, style) };
|
||
#else
|
||
SKFontStyle style = new SKFontStyle(weight, SKFontStyleWidth.Normal, slant);
|
||
if (Application.OperatingSystem == OperatingSystemType.Linux || Application.OperatingSystem == OperatingSystemType.OSX)
|
||
{
|
||
fontWrap = new FontWrapper { SKTypeface = font };
|
||
//Console.WriteLine("Skia的BUG，内嵌字体在Linux和Mac下不能使用字体样式选择");
|
||
}
|
||
else
|
||
{
|
||
fontWrap = new FontWrapper { SKTypeface = SKFontManager.Default.MatchTypeface(font, style) };
|
||
}
|
||
#endif
|
||
_fontFamilies.TryAdd(new FontKey(weight, slant, fontFamily), fontWrap);
|
||
}
|
||
else
|
||
{
|
||
fontWrap = new FontWrapper { SKTypeface = SKTypeface.FromFamilyName(fontFamily, weight, SKFontStyleWidth.Normal, slant) };
|
||
|
||
if (fontWrap.SKTypeface == null)
|
||
{
|
||
fontWrap.SKTypeface = SKTypeface.Default;
|
||
}
|
||
//SKFontStyle style = new SKFontStyle(weight, SKFontStyleWidth.Normal, slant);
|
||
//fontWrap = new FontWrapper { SKTypeface = SKFontManager.Default.MatchFamily(fontFamily, style) };
|
||
_fontFamilies.TryAdd(new FontKey(weight, slant, fontFamily), fontWrap);
|
||
}
|
||
}
|
||
return fontWrap;
|
||
}
|
||
|
||
public override IGeometryImpl CreateGeometry(CPF.Drawing.PathGeometry path)
|
||
{
|
||
return new SkiaPathGeometry(path);
|
||
}
|
||
|
||
public override IPathImpl CreatePath()
|
||
{
|
||
return new SkiaPath();
|
||
}
|
||
public override IPathImpl CreatePath(in Font font, string text)
|
||
{
|
||
return new SkiaPath(font, text);
|
||
}
|
||
|
||
public override void Dispose()
|
||
{
|
||
foreach (var item in _fonts)
|
||
{
|
||
item.Value.Dispose();
|
||
}
|
||
_fonts.Clear();
|
||
}
|
||
|
||
public override IImageImpl ImageFromFile(string path)
|
||
{
|
||
return new SkiaImage(path);
|
||
}
|
||
|
||
public override IImageImpl ImageFromStream(Stream stream)
|
||
{
|
||
return new SkiaImage(stream);
|
||
}
|
||
|
||
public override void LoadFont(Stream stream, string name)
|
||
{
|
||
var f = SKTypeface.FromStream(stream);
|
||
if (string.IsNullOrWhiteSpace(name))
|
||
{
|
||
name = f.FamilyName;
|
||
}
|
||
if (!_fonts.TryGetValue(name, out var value))
|
||
{
|
||
System.Diagnostics.Debug.WriteLine("加载字体：" + f.FamilyName);
|
||
Console.WriteLine("加载字体：" + f.FamilyName);
|
||
_fonts.TryAdd(name, f);
|
||
}
|
||
else
|
||
{
|
||
f.Dispose();
|
||
}
|
||
}
|
||
|
||
public override Size MeasureString(string str, Font font)
|
||
{
|
||
using (SKPaint paint = new SKPaint())
|
||
{
|
||
paint.TextEncoding = SKTextEncoding.Utf16;
|
||
//paint.IsStroke = false;
|
||
//paint.LcdRenderText = true;
|
||
//paint.SubpixelText = true;
|
||
paint.IsAntialias = true;
|
||
paint.Typeface = (font.AdapterFont as FontWrapper).SKTypeface;
|
||
paint.TextSize = font.FontSize;
|
||
if (str.Length < 3)
|
||
{
|
||
var width = paint.MeasureString(str);
|
||
return new Size(width, paint.FontSpacing + 1);
|
||
}
|
||
else
|
||
{
|
||
var lines = str.Split('\n');
|
||
float width = 0;
|
||
float heght = 0;
|
||
for (int i = 0; i < lines.Length; i++)
|
||
{
|
||
var line = lines[i].Trim('\r');
|
||
if (i == lines.Length - 1 && line == "")
|
||
{
|
||
break;
|
||
}
|
||
width = Math.Max(width, paint.MeasureString(line));
|
||
heght += paint.FontSpacing;
|
||
}
|
||
return new Size(width, heght);
|
||
}
|
||
}
|
||
}
|
||
|
||
public override Size MeasureString(string str, Font font, float maxWidth)
|
||
{
|
||
using (SKPaint paint = new SKPaint())
|
||
{
|
||
paint.TextEncoding = SKTextEncoding.Utf16;
|
||
//paint.IsStroke = false;
|
||
//paint.LcdRenderText = true;
|
||
//paint.SubpixelText = true;
|
||
paint.IsAntialias = true;
|
||
paint.Typeface = (font.AdapterFont as FontWrapper).SKTypeface;
|
||
paint.TextSize = font.FontSize;
|
||
if (str.Length == 1 || (str.Length == 2 && char.IsSurrogate(str[0])))
|
||
{
|
||
return new Size(paint.MeasureString(str), paint.FontSpacing);
|
||
}
|
||
else
|
||
{
|
||
var lines = str.Split('\n');
|
||
float width = 0;
|
||
float heght = 1;
|
||
for (int i = 0; i < lines.Length; i++)
|
||
{
|
||
var line = lines[i].Trim('\r');
|
||
if (i == lines.Length - 1 && line == "")
|
||
{
|
||
break;
|
||
}
|
||
//var text = line;
|
||
var ws = paint.MeasureAllChar(line);
|
||
var start = 0;
|
||
while (true)
|
||
{
|
||
//var len = Math.Max(1, (int)paint.BreakText(text, (float)Math.Ceiling(maxWidth)));
|
||
var len = ws.BreakText(start, (float)Math.Ceiling(maxWidth), false);
|
||
if (start + len.Item1 <= ws.Count)
|
||
{
|
||
//text = line.Substring(start, len);
|
||
start += len.Item1;
|
||
}
|
||
width = Math.Max(width, len.Item2);
|
||
heght += paint.FontSpacing;
|
||
if (start <= ws.Count - 1)
|
||
{
|
||
//text = line.Substring(start);
|
||
}
|
||
else
|
||
{
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
return new Size(width, heght);
|
||
}
|
||
}
|
||
}
|
||
|
||
public override float GetDefaultLineHeight(in Font font)
|
||
{
|
||
using (SKPaint paint = new SKPaint())
|
||
{
|
||
paint.TextEncoding = SKTextEncoding.Utf16;
|
||
//paint.IsStroke = false;
|
||
//paint.LcdRenderText = true;
|
||
//paint.SubpixelText = true;
|
||
paint.IsAntialias = true;
|
||
paint.Typeface = (font.AdapterFont as FontWrapper).SKTypeface;
|
||
paint.TextSize = font.FontSize;
|
||
|
||
return paint.FontSpacing;
|
||
}
|
||
}
|
||
}
|
||
|
||
class FontWrapper : IDisposable
|
||
{
|
||
public SKTypeface SKTypeface;
|
||
public void Dispose()
|
||
{ }
|
||
}
|
||
struct FontKey
|
||
{
|
||
public readonly SKFontStyleSlant Slant;
|
||
public readonly SKFontStyleWeight Weight;
|
||
public readonly string Name;
|
||
|
||
public FontKey(SKFontStyleWeight weight, SKFontStyleSlant slant, string name)
|
||
{
|
||
Slant = slant;
|
||
Weight = weight;
|
||
Name = name;
|
||
}
|
||
|
||
public override int GetHashCode()
|
||
{
|
||
var hash = 17;
|
||
hash = (hash * 31) + (int)Slant;
|
||
hash = (hash * 31) + (int)Weight;
|
||
hash ^= Name.GetHashCode();
|
||
return hash;
|
||
}
|
||
|
||
public override bool Equals(object other)
|
||
{
|
||
return other is FontKey key && this.Equals(key);
|
||
}
|
||
|
||
private bool Equals(FontKey other)
|
||
{
|
||
return Slant == other.Slant &&
|
||
Weight == other.Weight &&
|
||
Name == other.Name;
|
||
}
|
||
}
|
||
}
|