public static SKShader CreateColorFilter (SKShader shader, SKColorFilter filter)
{
if (shader == null)
throw new ArgumentNullException (nameof (shader));
if (filter == null)
throw new ArgumentNullException (nameof (filter));
return GetObject<SKShader> (SkiaApi.sk_shader_new_color_filter (shader.Handle, filter.Handle));
}
public static SKShader CreateCompose(SKShader shaderA, SKShader shaderB, SKXferMode mode)
{
return(GetObject <SKShader>(SkiaApi.sk_shader_new_compose_with_mode(shaderA.Handle, shaderB.Handle, mode)));
}
public static SKShader CreateCompose(SKShader shaderA, SKShader shaderB)
{
return(GetObject <SKShader>(SkiaApi.sk_shader_new_compose(shaderA.Handle, shaderB.Handle)));
}
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy, SKMatrix localMatrix) => SKShader.CreateBitmap(this, tmx, tmy, localMatrix);
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy) => SKShader.CreateBitmap(this, tmx, tmy);
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy, SKMatrix localMatrix, SKRect tile) => SKShader.CreatePicture(this, tmx, tmy, localMatrix, tile);
public static SKShader CreateCompose(SKShader shaderA, SKShader shaderB, SKXferMode mode)
{
return(CreateCompose(shaderA, shaderA, (SKBlendMode)mode));
}
public PaintState(SKPaint paint, SKColor color, SKShader shader)
{
_paint = paint;
_color = color;
_shader = shader;
}
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy) => SKShader.GetObject(SkiaApi.sk_bitmap_make_shader(Handle, tmx, tmy, null));
// CreateCompose public static SKShader CreateCompose (SKShader shaderA, SKShader shaderB) => CreateCompose (shaderA, shaderB, SKBlendMode.SrcOver);
public SKShader ToShader(SKShaderTileMode tileX, SKShaderTileMode tileY, SKMatrix localMatrix) => SKShader.GetObject(SkiaApi.sk_image_make_shader(Handle, tileX, tileY, &localMatrix));
public SKShader ToShader(SKShaderTileMode tileX, SKShaderTileMode tileY) => SKShader.GetObject(SkiaApi.sk_image_make_shader(Handle, tileX, tileY, null));
public static SKShader CreateLocalMatrix (SKShader shader, SKMatrix localMatrix)
{
if (shader == null)
throw new ArgumentNullException (nameof (shader));
return GetObject<SKShader> (SkiaApi.sk_shader_new_local_matrix (shader.Handle, ref localMatrix));
}
public static SKShader CreateCompose (SKShader shaderA, SKShader shaderB, SKXferMode mode)
{
if (shaderA == null)
throw new ArgumentNullException (nameof (shaderA));
if (shaderB == null)
throw new ArgumentNullException (nameof (shaderB));
return GetObject<SKShader> (SkiaApi.sk_shader_new_compose_with_mode (shaderA.Handle, shaderB.Handle, mode));
}
public static SKShader CreateColorFilter(SKShader shader, SKColorFilter filter)
{
return(GetObject <SKShader> (SkiaApi.sk_shader_new_color_filter(shader.Handle, filter.Handle)));
}
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy, SKMatrix localMatrix) => SKShader.GetObject(SkiaApi.sk_bitmap_make_shader(Handle, tmx, tmy, &localMatrix));
public static SKShader CreateLocalMatrix(SKShader shader, SKMatrix localMatrix)
{
return(GetObject <SKShader> (SkiaApi.sk_shader_new_local_matrix(shader.Handle, ref localMatrix)));
}
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy) => SKShader.CreatePicture(this, tmx, tmy);
public static void Xfermode(SKCanvas canvas, int width, int height)
{
var modes = Enum.GetValues(typeof(SKXferMode)).Cast <SKXferMode> ().ToArray();
var cols = width < height ? 3 : 5;
var rows = (modes.Length - 1) / cols + 1;
var w = (float)width / cols;
var h = (float)height / rows;
var rect = SKRect.Create(w, h);
var srcPoints = new[] {
new SKPoint(0.0f, 0.0f),
new SKPoint(w, 0.0f)
};
var srcColors = new [] {
SKColors.Magenta.WithAlpha(0),
SKColors.Magenta
};
var dstPoints = new [] {
new SKPoint(0.0f, 0.0f),
new SKPoint(0.0f, h)
};
var dstColors = new [] {
SKColors.Cyan.WithAlpha(0),
SKColors.Cyan
};
using (var text = new SKPaint())
using (var stroke = new SKPaint())
using (var src = new SKPaint())
using (var dst = new SKPaint())
using (var srcShader = SKShader.CreateLinearGradient(srcPoints [0], srcPoints [1], srcColors, null, SKShaderTileMode.Clamp))
using (var dstShader = SKShader.CreateLinearGradient(dstPoints [0], dstPoints [1], dstColors, null, SKShaderTileMode.Clamp)) {
text.TextSize = 12.0f;
text.IsAntialias = true;
text.TextAlign = SKTextAlign.Center;
stroke.IsStroke = true;
src.Shader = srcShader;
dst.Shader = dstShader;
canvas.Clear(SKColors.White);
for (var i = 0; i < modes.Length; ++i)
{
using (new SKAutoCanvasRestore(canvas, true)) {
canvas.Translate(w * (i / rows), h * (i % rows));
canvas.ClipRect(rect);
canvas.DrawColor(SKColors.LightGray);
canvas.SaveLayer(null);
canvas.Clear(SKColors.Transparent);
canvas.DrawPaint(dst);
src.XferMode = modes [i];
canvas.DrawPaint(src);
canvas.DrawRect(rect, stroke);
var desc = modes [i].ToString();
canvas.DrawText(desc, w / 2f, h / 2f, text);
}
}
}
}
public SKShader ToShader(SKShaderTileMode tmx, SKShaderTileMode tmy, SKMatrix localMatrix, SKRect tile) => SKShader.GetObject(SkiaApi.sk_picture_make_shader(Handle, tmx, tmy, &localMatrix, &tile));
