/// <summary>Function to write out the specifics of the font brush data to a file writer.</summary>
/// <param name="writer">The writer used to write the brush data.</param>
internal override void WriteBrushData(GorgonBinaryWriter writer)
{
writer.Write((int)WrapMode);
writer.Write(Points.Count);
for (int i = 0; i < Points.Count; ++i)
{
writer.WriteValue(Points[i]);
}
writer.Write(BlendFactors.Count);
for (int i = 0; i < BlendFactors.Count; ++i)
{
writer.Write(BlendFactors[i]);
}
writer.Write(BlendPositions.Count);
for (int i = 0; i < BlendPositions.Count; ++i)
{
writer.Write(BlendPositions[i]);
}
writer.Write(CenterColor.ToARGB());
writer.WriteValue(CenterPoint);
writer.WriteValue(FocusScales);
writer.Write(Interpolation.Count);
for (int i = 0; i < Interpolation.Count; ++i)
{
GorgonGlyphBrushInterpolator interp = Interpolation[i];
writer.Write(interp.Weight);
writer.Write(interp.Color.ToARGB());
}
writer.Write(SurroundColors.Count);
for (int i = 0; i < SurroundColors.Count; ++i)
{
writer.Write(SurroundColors[i].ToARGB());
}
}
/// <inheritdoc/>
public override int GetHashCode()
{
return(CenterColor.GetHashCode() ^ (EdgeColor.GetHashCode() << 1) ^ ((Style.GetHashCode() + 1) << 2));
}
protected override void OnPaintSurface(SKPaintSurfaceEventArgs e)
{
Trace.WriteLine($"{GetType().Name} OnPaintSurface");
SKImageInfo info = e.Info;
SKSurface surface = e.Surface;
SKCanvas canvas = surface.Canvas;
RadiusDefault = Math.Max(info.Width, info.Height) / 2;
if (Radius == 0)
{
Radius = RadiusDefault;
}
// 押下状態では影を大きくする
var seed = Math.Min(info.Rect.Width, info.Rect.Height);
int bodyDelta = seed / 10;
var bodyRect = new SKRectI(info.Rect.Left + bodyDelta, info.Rect.Top + bodyDelta, info.Rect.Right - bodyDelta, info.Rect.Bottom - bodyDelta);
int shadowDelta = IsPressed ? 0 : seed / 20;
var shadowRect = new SKRectI(info.Rect.Left + shadowDelta, info.Rect.Top + shadowDelta, info.Rect.Right - shadowDelta, info.Rect.Bottom - shadowDelta);
var shadowColor = SKColors.DarkGray;
var sunnyColor = SKColors.Transparent;
canvas.Clear();
// 上下の影
using (var paint = new SKPaint())
{
float start = (float)(bodyRect.Top - shadowRect.Top) / shadowRect.Height;
float end = 1 - start;
var rect = new SKRectI(bodyRect.Left, shadowRect.Top, bodyRect.Right, shadowRect.Bottom);
paint.Shader = SKShader.CreateLinearGradient(
new SKPoint(rect.MidX, rect.Top),
new SKPoint(rect.MidX, rect.Bottom),
new SKColor[] { sunnyColor, shadowColor, shadowColor, sunnyColor },
new float[] { 0, start, end, 1 },
SKShaderTileMode.Clamp);
canvas.DrawRect(rect, paint);
}
// 左右の影
using (var paint = new SKPaint())
{
float start = (float)(bodyRect.Left - shadowRect.Left) / shadowRect.Width;
float end = 1 - start;
var rect = new SKRectI(shadowRect.Left, bodyRect.Top, shadowRect.Right, bodyRect.Bottom);
paint.Shader = SKShader.CreateLinearGradient(
new SKPoint(rect.Left, rect.MidY),
new SKPoint(rect.Right, rect.MidY),
new SKColor[] { sunnyColor, shadowColor, shadowColor, sunnyColor },
new float[] { 0, start, end, 1 },
SKShaderTileMode.Clamp);
canvas.DrawRect(rect, paint);
}
// 四隅 左上
using (var paint = new SKPaint())
{
var rect = new SKRectI(shadowRect.Left, shadowRect.Top, bodyRect.Left, bodyRect.Top);
paint.Shader = SKShader.CreateRadialGradient(
new SKPoint(rect.Right, rect.Bottom),
rect.Width,
new SKColor[] { shadowColor, sunnyColor },
null,
SKShaderTileMode.Clamp);
canvas.DrawRect(rect, paint);
}
// 四隅 右上
using (var paint = new SKPaint())
{
var rect = new SKRectI(bodyRect.Right, shadowRect.Top, shadowRect.Right, bodyRect.Top);
paint.Shader = SKShader.CreateRadialGradient(
new SKPoint(rect.Left, rect.Bottom),
rect.Width,
new SKColor[] { shadowColor, sunnyColor },
null,
SKShaderTileMode.Clamp);
canvas.DrawRect(rect, paint);
}
// 四隅 左下
using (var paint = new SKPaint())
{
var rect = new SKRectI(shadowRect.Left, bodyRect.Bottom, bodyRect.Left, shadowRect.Bottom);
paint.Shader = SKShader.CreateRadialGradient(
new SKPoint(rect.Right, rect.Top),
rect.Width,
new SKColor[] { shadowColor, sunnyColor },
null,
SKShaderTileMode.Clamp);
canvas.DrawRect(rect, paint);
}
// 四隅 右下
using (var paint = new SKPaint())
{
var rect = new SKRectI(bodyRect.Right, bodyRect.Bottom, shadowRect.Right, shadowRect.Bottom);
paint.Shader = SKShader.CreateRadialGradient(
new SKPoint(rect.Left, rect.Top),
rect.Width,
new SKColor[] { shadowColor, sunnyColor },
null,
SKShaderTileMode.Clamp);
canvas.DrawRect(rect, paint);
}
// 本体
using (var paint = new SKPaint())
{
// 非活性状態ではグレー
var centerColor = IsEnabled ? CenterColor.ToSKColor() : SKColors.WhiteSmoke;
var edgeColor = IsEnabled ? EdgeColor.ToSKColor() : SKColors.LightGray;
// プラットフォームにより影のサイズが異なるため切れてしまう
//var sigma = IsPressed ? 4 : 1;
//paint.ImageFilter = SKImageFilter.CreateDropShadow(0, 0, sigma, sigma, SKColors.Black, SKDropShadowImageFilterShadowMode.DrawShadowAndForeground);
paint.Shader = SKShader.CreateRadialGradient(
new SKPoint(info.Rect.MidX, info.Rect.MidY),
Radius,
new SKColor[] { centerColor, edgeColor },
null,
SKShaderTileMode.Clamp);
canvas.DrawRect(bodyRect, paint);
}
// 文字
using (var paint = new SKPaint())
{
paint.Color = IsEnabled ? SKColors.Black : SKColors.Gray;
paint.Typeface = SKTypeface.FromFamilyName("Arial", SKTypefaceStyle.Bold);
paint.IsAntialias = true;
// 見やすくならない
//paint.ImageFilter = SKImageFilter.CreateDropShadow(2, 2, 2, 2, SKColors.Black, SKDropShadowImageFilterShadowMode.DrawShadowAndForeground);
var textBounds = new SKRect();
paint.MeasureText(Text, ref textBounds);
float height = textBounds.Height;
paint.TextSize = 0.4f * bodyRect.Height * paint.TextSize / height;
paint.MeasureText(Text, ref textBounds);
float xText = bodyRect.Width / 2 - textBounds.MidX + bodyDelta;
float yText = bodyRect.Height / 2 - textBounds.MidY + bodyDelta;
canvas.DrawText(Text, xText, yText, paint);
}
}
