private void DrawThumbnails(float x, float y, float w, float h, int[] images, float t)
{
const float cornerRadius = 3.0f;
const float thumb = 60.0f;
const float arry = 30.5f;
float stackh = (images.Length / 2) * (thumb + 10.0f) + 10.0f;
float u = (1.0f + MathF.Cos(t * 0.5f)) * 0.5f;
float u2 = (1.0f - MathF.Cos(t * 0.2f)) * 0.5f;
_nvg.Save();
Paint shadowPaint = _nvg.BoxGradient(x, y + 4.0f, w, h, cornerRadius * 2.0f, 20.0f, _nvg.Rgba(0, 0, 0, 128), _nvg.Rgba(0, 0, 0, 0));
_nvg.BeginPath();
_nvg.Rect(x - 10.0f, y - 10.0f, w + 20.0f, h + 30.0f);
_nvg.RoundedRect(x, y, w, h, cornerRadius);
_nvg.PathWinding(Solidity.Hole);
_nvg.FillPaint(shadowPaint);
_nvg.Fill();
_nvg.BeginPath();
_nvg.RoundedRect(x, y, w, h, cornerRadius);
_nvg.MoveTo(x - 10.0f, y + arry);
_nvg.LineTo(x + 1.0f, y + arry - 11.0f);
_nvg.LineTo(x + 1.0f, y + arry + 11.0f);
_nvg.FillColour(_nvg.Rgba(200, 200, 200, 255));
_nvg.Fill();
_nvg.Save();
_nvg.Scissor(x, y, w, h);
_nvg.Translate(0, -(stackh - h) * u);
float dv = 1.0f / (float)(images.Length - 1);
for (uint i = 0; i < images.Length; i++)
{
float iw, ih;
float ix, iy;
float tx = x + 10.0f;
float ty = y + 10.0f;
tx += (i % 2) * (thumb + 10.0f);
ty += (i / 2) * (thumb + 10.0f);
_nvg.ImageSize(images[i], out uint imgW, out uint imgH);
if (imgW < imgH)
{
iw = thumb;
ih = iw * (float)imgH / (float)imgW;
ix = 0.0f;
iy = -(ih - thumb) * 0.5f;
}
else
{
ih = thumb;
iw = ih * (float)imgW / (float)imgH;
ix = -(iw - thumb) * 0.5f;
iy = 0.0f;
}
float v = i * dv;
float a = Clamp((u2 - v) / dv, 0.0f, 1.0f);
if (a < 1.0f)
{
DrawSpinner(tx + thumb / 2.0f, ty + thumb / 2.0f, thumb * 0.25f, t);
}
Paint imgPaint = Paint.ImagePattern(tx + ix, ty + iy, iw, ih, 0.0f / 180.0f * MathF.PI, images[i], a);
_nvg.BeginPath();
_nvg.RoundedRect(tx, ty, thumb, thumb, 5.0f);
_nvg.FillPaint(imgPaint);
_nvg.Fill();
shadowPaint = Paint.BoxGradient(tx - 1.0f, ty, thumb + 2.0f, thumb + 2.0f, 5.0f, 3.0f, _nvg.Rgba(0, 0, 0, 128), _nvg.Rgba(0, 0, 0, 0));
_nvg.BeginPath();
_nvg.Rect(tx - 5.0f, ty - 5.0f, thumb + 10.0f, thumb + 10.0f);
_nvg.RoundedRect(tx, ty, thumb, thumb, 6.0f);
_nvg.PathWinding(Solidity.Hole);
_nvg.FillPaint(shadowPaint);
_nvg.Fill();
_nvg.BeginPath();
_nvg.RoundedRect(tx + 0.5f, ty + 0.5f, thumb - 1.0f, thumb - 1.0f, 4.0f - 0.5f);
_nvg.StrokeWidth(1.0f);
_nvg.StrokeColour(_nvg.Rgba(255, 255, 255, 192));
_nvg.Fill();
}
_nvg.Restore();
Paint fadePaint = _nvg.LinearGradient(x, y, x, y + 6.0f, _nvg.Rgba(200, 200, 200, 255), _nvg.Rgba(200, 200, 200, 0));
_nvg.BeginPath();
_nvg.Rect(x + 4.0f, y, w - 8.0f, 6.0f);
_nvg.FillPaint(fadePaint);
_nvg.Fill();
fadePaint = _nvg.LinearGradient(x, y + h, x, y + h - 6.0f, _nvg.Rgba(200, 200, 200, 255), _nvg.Rgba(200, 200, 200, 0));
_nvg.BeginPath();
_nvg.Rect(x + 4.0f, y + h - 6.0f, w - 8.0f, 6.0f);
_nvg.FillPaint(fadePaint);
_nvg.Fill();
shadowPaint = _nvg.BoxGradient(x + w - 12.0f + 1.0f, y + 4.0f + 1.0f, 8.0f, h - 8.0f, 3.0f, 4.0f, _nvg.Rgba(0, 0, 0, 32), _nvg.Rgba(0, 0, 0, 92));
_nvg.BeginPath();
_nvg.RoundedRect(x + w - 12.0f, y + 4.0f, 8.0f, h - 8.0f, 3.0f);
_nvg.FillPaint(shadowPaint);
_nvg.Fill();
float scrollH = (h / stackh) * (h - 8.0f);
shadowPaint = _nvg.BoxGradient(x + w - 12.0f - 1.0f, y + 4.0f + (h - 8.0f - scrollH) * u - 1.0f, 8.0f, scrollH, 3.0f, 4.0f, _nvg.Rgba(220, 220, 220, 255), _nvg.Rgba(128, 128, 128, 255));
_nvg.BeginPath();
_nvg.RoundedRect(x + w - 12.0f + 1.0f, y + 4.0f + 1.0f + (h - 8.0f - scrollH) * u, 8.0f - 2.0f, scrollH - 2.0f, 2.0f);
_nvg.FillPaint(shadowPaint);
_nvg.Fill();
_nvg.Restore();
}