public void Erase (SKColor color, SKRectI rect)
{
SkiaApi.sk_bitmap_erase_rect (Handle, color, ref rect);
}
public static SKImage FromData (SKData data, SKRectI subset)
{
if (data == null)
throw new ArgumentNullException (nameof (data));
var handle = SkiaApi.sk_image_new_from_encoded (data.Handle, ref subset);
return GetObject<SKImage> (handle);
}
public bool Erase(SKColorF color, SKRectI subset) => SkiaApi.sk_pixmap_erase_color4f(Handle, &color, &subset);
public bool Intersects(SKRectI rect) => SkiaApi.sk_region_intersects_rect(Handle, &rect);
public SKImage ApplyImageFilter(GRContext context, SKImageFilter filter, SKRectI subset, SKRectI clipBounds, out SKRectI outSubset, out SKPointI outOffset) => ApplyImageFilter((GRRecordingContext)context, filter, subset, clipBounds, out outSubset, out outOffset);
public bool GetValidSubset(ref SKRectI desiredSubset)
{
return(SkiaApi.sk_codec_get_valid_subset(Handle, ref desiredSubset));
}
public static SKImageFilter CreateAlphaThreshold(SKRectI region, float innerThreshold, float outerThreshold, SKImageFilter input = null)
{
return(new SKImageFilter(SkiaApi.sk_imagefilter_new_alpha_threshold(ref region, innerThreshold, outerThreshold, input == null ? IntPtr.Zero : input.Handle)));
}
public bool GetClipDeviceBounds(ref SKRectI bounds)
{
return(SkiaApi.sk_canvas_get_clip_device_bounds(Handle, ref bounds));
}
public SKCodecOptions (SKZeroInitialized zeroInitialized) {
this.zeroInitialized = zeroInitialized;
this.subset = SKRectI.Empty;
this.hasSubset = false;
}
public bool SetRect(SKRectI rect)
{
return(SkiaApi.sk_region_set_rect(Handle, ref rect));
}
// QuickReject
public bool QuickReject(SKRectI rect) =>
SkiaApi.sk_region_quick_reject_rect(Handle, &rect);
public bool SetRect(SKRectI rect)
{
return SkiaApi.sk_region_set_rect(Handle, ref rect);
}
// QuickContains
public bool QuickContains(SKRectI rect) =>
SkiaApi.sk_region_quick_contains(Handle, &rect);
public bool Contains(SKRectI rect) => SkiaApi.sk_region_contains_rect(Handle, &rect);
public bool GetValidSubset (ref SKRectI desiredSubset)
{
return SkiaApi.sk_codec_get_valid_subset (Handle, ref desiredSubset);
}
public SKImage ApplyImageFilter(SKImageFilter filter, SKRectI subset, SKRectI clipBounds, out SKRectI outSubset, out SKPointI outOffset)
{
if (filter == null)
throw new ArgumentNullException(nameof(filter));
fixed(SKRectI *os = &outSubset)
fixed(SKPointI * oo = &outOffset)
{
return(GetObject <SKImage> (SkiaApi.sk_image_make_with_filter(Handle, filter.Handle, &subset, &clipBounds, os, oo)));
}
}
// ApplyImageFilter
public SKImage ApplyImageFilter(SKImageFilter filter, SKRectI subset, SKRectI clipBounds, out SKRectI outSubset, out SKPoint outOffset)
{
var image = ApplyImageFilter(filter, subset, clipBounds, out outSubset, out SKPointI outOffsetActual);
outOffset = outOffsetActual;
return(image);
}
public bool SetRect(SKRectI rect) => SkiaApi.sk_region_set_rect(Handle, &rect);
public SKRegion(SKRectI rect)
: this()
{
SetRect(rect);
}
public void DrawBitmapNinePatch(SKBitmap bitmap, SKRectI center, SKRect dst, SKPaint paint = null)
{
if (bitmap == null)
throw new ArgumentNullException (nameof (bitmap));
// the "center" rect must fit inside the bitmap "rect"
if (!SKRect.Create (bitmap.Info.Size).Contains (center))
throw new ArgumentOutOfRangeException (nameof (center));
var xDivs = new [] { center.Left, center.Right };
var yDivs = new [] { center.Top, center.Bottom };
DrawBitmapLattice (bitmap, xDivs, yDivs, dst, paint);
}
public bool Op(SKRectI rect, SKRegionOperation op)
{
return(SkiaApi.sk_region_op(Handle, rect.Left, rect.Top, rect.Right, rect.Bottom, op));
}
public bool GetDeviceClipBounds(out SKRectI bounds)
{
return(SkiaApi.sk_canvas_get_device_clip_bounds(Handle, out bounds));
}
public static void BitmapLattice (SKCanvas canvas, int width, int height)
{
canvas.Clear (SKColors.White);
var assembly = typeof (Demos).GetTypeInfo ().Assembly;
var imageName = assembly.GetName ().Name + ".nine-patch.png";
// load the image from the embedded resource stream
using (var resource = assembly.GetManifestResourceStream (imageName))
using (var stream = new SKManagedStream (resource))
using (var bitmap = SKBitmap.Decode (stream))
{
var patchCenter = new SKRectI (33, 33, 256 - 33, 256 - 33);
// 2x3 for portrait, or 3x2 for landscape
var land = width > height;
var min = land ? Math.Min (width / 3f, height / 2f) : Math.Min (width / 2f, height / 3f);
var wide = SKRect.Inflate (SKRect.Create (0, land ? min : (min * 2f), min * 2f, min), -6, -6);
var tall = SKRect.Inflate (SKRect.Create (land ? (min * 2f) : min, 0, min, min * 2f), -6, -6);
var square = SKRect.Inflate (SKRect.Create (0, 0, min, min), -6, -6);
var text = SKRect.Create (land ? min : 0, land ? 0 : min, min, min / 5f);
text.Offset (text.Width / 2f, text.Height * 1.5f);
text.Right = text.Left;
// draw the bitmaps
canvas.DrawBitmapNinePatch (bitmap, patchCenter, square);
canvas.DrawBitmapNinePatch (bitmap, patchCenter, tall);
canvas.DrawBitmapNinePatch (bitmap, patchCenter, wide);
// describe what we see
using (var paint = new SKPaint ())
{
paint.TextAlign = SKTextAlign.Center;
paint.TextSize = text.Height * 0.75f;
canvas.DrawText ("The corners", text.Left, text.Top, paint);
text.Offset (0, text.Height);
canvas.DrawText ("should always", text.Left, text.Top, paint);
text.Offset (0, text.Height);
canvas.DrawText ("be square", text.Left, text.Top, paint);
}
}
}
public void Erase(SKColor color, SKRectI rect)
{
SkiaApi.sk_bitmap_erase_rect(Handle, (uint)color, &rect);
}
public extern static bool sk_codec_get_valid_subset(sk_codec_t codec, ref SKRectI desiredSubset);
public static SKImage FromData(SKData data, SKRectI subset)
{
return(FromEncodedData(data, subset));
}
public extern static void sk_bitmap_erase_rect(sk_bitmap_t cbitmap, SKColor color, ref SKRectI rect);
public SKImage ApplyImageFilter(SKImageFilter filter, SKRectI subset, SKRectI clipBounds, out SKRectI outSubset, out SKPoint outOffset)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
return(GetObject <SKImage> (SkiaApi.sk_image_make_with_filter(Handle, filter.Handle, ref subset, ref clipBounds, out outSubset, out outOffset)));
}
public extern static bool sk_region_intersects(sk_region_t r, SKRectI rect);
public bool Erase(SKColor color, SKRectI subset)
{
return(SkiaApi.sk_pixmap_erase_color(Handle, (uint)color, &subset));
}
public extern static bool sk_region_set_rect(sk_region_t r, ref SKRectI rect);
public void Erase(SKColor color, SKRectI rect)
{
SkiaApi.sk_bitmap_erase_rect(Handle, color, ref rect);
}
public extern static bool sk_canvas_get_clip_device_bounds(sk_canvas_t t, ref SKRectI cbounds);
public bool Intersects(SKRectI rect)
{
return SkiaApi.sk_region_intersects(Handle, rect);
}
public extern static sk_image_t sk_image_new_from_encoded(sk_data_t encoded, ref SKRectI subset);
public bool Op(SKRectI rect, SKRegionOperation op)
{
return SkiaApi.sk_region_op(Handle, rect.Left, rect.Top, rect.Right, rect.Bottom, op);
}
public extern static sk_imagefilter_t sk_imagefilter_new_alpha_threshold(ref SKRectI region, float innerThreshold, float outerThreshold, sk_imagefilter_t input /*NULL*/);
public static SKImageFilter CreateAlphaThreshold(SKRectI region, float innerThreshold, float outerThreshold, SKImageFilter input = null)
{
return GetObject<SKImageFilter>(SkiaApi.sk_imagefilter_new_alpha_threshold(ref region, innerThreshold, outerThreshold, input == null ? IntPtr.Zero : input.Handle));
}
public bool Intersects(SKRectI rect)
{
return(SkiaApi.sk_region_intersects(Handle, rect));
}
public SKCodecOptions (SKZeroInitialized zeroInitialized, SKRectI subset) {
this.zeroInitialized = zeroInitialized;
this.subset = subset;
this.hasSubset = true;
}
public SKImage Subset(SKRectI subset)
{
return(GetObject <SKImage> (SkiaApi.sk_image_make_subset(Handle, ref subset)));
}
public SKCodecOptions(SKRectI subset)
{
ZeroInitialized = SKZeroInitialized.No;
Subset = subset;
}
public SKImage Snapshot(SKRectI bounds) => SKImage.GetObject(SkiaApi.sk_surface_new_image_snapshot_with_crop(Handle, &bounds));
private bool IntersectsWithInclusive(SKRectI r)
{
return
!((left > r.right) || (right < r.left) ||
(top > r.bottom) || (bottom < r.top));
}
public SKCodecOptions(SKZeroInitialized zeroInitialized, SKRectI subset)
{
ZeroInitialized = zeroInitialized;
Subset = subset;
}
public bool Contains(SKRectI rect)
{
return
(left <= rect.left) && (right >= rect.right) &&
(top <= rect.top) && (bottom >= rect.bottom);
}
public bool IntersectsWith(SKRectI rect)
{
return
!((left >= rect.right) || (right <= rect.left) ||
(top >= rect.bottom) || (bottom <= rect.top));
}
public static SKRectI Union(SKRectI a, SKRectI b)
{
return new SKRectI(
Math.Min(a.Left, b.Left),
Math.Min(a.Top, b.Top),
Math.Max(a.Right, b.Right),
Math.Max(a.Bottom, b.Bottom));
}
public void Union(SKRectI rect)
{
this = SKRectI.Union(this, rect);
}
public void Intersect(SKRectI rect)
{
this = SKRectI.Intersect(this, rect);
}
public static SKRectI Intersect(SKRectI a, SKRectI b)
{
if (!a.IntersectsWithInclusive(b))
return Empty;
return new SKRectI(
Math.Max(a.left, b.left),
Math.Max(a.top, b.top),
Math.Min(a.right, b.right),
Math.Min(a.bottom, b.bottom));
}
public static SKRectI Inflate(SKRectI rect, int x, int y)
{
SKRectI r = new SKRectI(rect.left, rect.top, rect.right, rect.bottom);
r.Inflate(x, y);
return r;
}
public bool GetClipDeviceBounds(ref SKRectI bounds)
{
return SkiaApi.sk_canvas_get_clip_device_bounds(Handle, ref bounds);
}
public void DrawImageNinePatch(SKImage image, SKRectI center, SKRect dst, SKPaint paint = null)
{
if (image == null)
throw new ArgumentNullException (nameof (image));
// the "center" rect must fit inside the image "rect"
if (!SKRect.Create (image.Width, image.Height).Contains (center))
throw new ArgumentOutOfRangeException (nameof (center));
var xDivs = new [] { center.Left, center.Right };
var yDivs = new [] { center.Top, center.Bottom };
DrawImageLattice (image, xDivs, yDivs, dst, paint);
}