1using System;
  2using System.Collections.Generic;
  3using System.Drawing;
  4using System.Drawing.Drawing2D;
  5using System.Drawing.Imaging;
  6using System.Drawing.Text;
  7using System.IO;
  8using System.Linq;
  9using System.Runtime.InteropServices;
 10using System.Windows.Forms;
 11using WindowCapture.App;
 12using WindowCapture.Detection;
 13using WindowCapture.Effects;
 14using WindowCapture.Helpers;
 15using WindowCapture.Integration;
 16using WindowCapture.Models;
 17using WindowCapture.Native;
 18
 19namespace WindowCapture.UI
 20{
 21    public partial class EditorForm
 22    {
 23        // Static noise texture for Acrylic-like grain effect
 24        private static Bitmap noiseTexture;
 25        private static readonly object noiseLock = new object();
 26
 27        private static Bitmap GetNoiseTexture()
 28        {
 29            if (noiseTexture != null) return noiseTexture;
 30            lock (noiseLock)
 31            {
 32                if (noiseTexture != null) return noiseTexture;
 33                // Generate 128x128 tileable noise (subtle grain like Acrylic)
 34                const int sz = 128;
 35                var bmp = new Bitmap(sz, sz, PixelFormat.Format32bppArgb);
 36                var rng = new Random(42); // deterministic for consistent look
 37                var bits = bmp.LockBits(new Rectangle(0, 0, sz, sz),
 38                    ImageLockMode.WriteOnly, PixelFormat.Format32bppArgb);
 39                unsafe
 40                {
 41                    byte* ptr = (byte*)bits.Scan0;
 42                    for (int i = 0; i < sz * sz; i++)
 43                    {
 44                        // Monochrome noise, very subtle alpha (4-12)
 45                        byte v = (byte)(rng.Next(180, 255));
 46                        int a = rng.Next(4, 14);
 47                        ptr[0] = v; ptr[1] = v; ptr[2] = v; ptr[3] = (byte)a;
 48                        ptr += 4;
 49                    }
 50                }
 51                bmp.UnlockBits(bits);
 52                noiseTexture = bmp;
 53                return noiseTexture;
 54            }
 55        }
 56
 57        private void ScrollContainer_Paint(object sender, PaintEventArgs e)
 58        {
 59            var g = e.Graphics;
 60            int r = Settings.CornerRadius;
 61            int w = scrollContainer.Width;
 62            int h = scrollContainer.Height;
 63
 64            Color tintColor = Settings.BlurTintColor;
 65            int tintAlpha = Settings.BlurTintAlpha;
 66
 67            // DWM handles blur + tint via GradientColor. Here we only add noise + handle corners.
 68
 69            if (isWin10RoundedCorners && r > 0)
 70            {
 71                // Win10: opaque tint in corners (hides DWM blur outside rounded rect)
 72                g.CompositingMode = CompositingMode.SourceCopy;
 73                using (var brush = new SolidBrush(Color.FromArgb(255, tintColor.R, tintColor.G, tintColor.B)))
 74                    g.FillRectangle(brush, 0, 0, w, h);
 75
 76                // Transparent inside rounded rect (lets DWM tinted blur show through)
 77                g.SmoothingMode = SmoothingMode.AntiAlias;
 78                using (var path = CreateRoundRectPath(0, 0, w, h, r))
 79                using (var brush = new SolidBrush(Color.FromArgb(0, 0, 0, 0)))
 80                    g.FillPath(brush, path);
 81
 82                g.CompositingMode = CompositingMode.SourceOver;
 83
 84                // Anti-aliased edge
 85                using (var path = CreateRoundRectPath(0, 0, w - 1, h - 1, r))
 86                using (var pen = new Pen(Color.FromArgb(180, tintColor.R, tintColor.G, tintColor.B), 1.5f))
 87                    g.DrawPath(pen, path);
 88            }
 89            // No else needed — DWM handles the tint for flat windows
 90
 91            // Acrylic-style noise grain
 92            var noise = GetNoiseTexture();
 93            using (var tb = new TextureBrush(noise, WrapMode.Tile))
 94                g.FillRectangle(tb, 0, 0, w, h);
 95
 96            g.SmoothingMode = SmoothingMode.AntiAlias;
 97
 98            // Window border
 99            if (Settings.ShowWindowBorder)
100            {
101                int br = Math.Min(255, tintColor.R + 40);
102                int bg2 = Math.Min(255, tintColor.G + 40);
103                int bb = Math.Min(255, tintColor.B + 40);
104                var borderColor = Color.FromArgb(100, br, bg2, bb);
105
106                if (r > 0)
107                {
108                    using (var path = CreateRoundRectPath(0, 0, w - 1, h - 1, r))
109                    using (var pen = new Pen(borderColor, 1f))
110                        g.DrawPath(pen, path);
111                }
112                else
113                {
114                    using (var pen = new Pen(borderColor, 1f))
115                        g.DrawRectangle(pen, 0, 0, w - 1, h - 1);
116                }
117            }
118        }
119
120        private void DrawGearIcon(Graphics g, int x, int y, int size, bool hovered)
121        {
122            var center = new PointF(x + size / 2f, y + size / 2f);
123            float outerR = size / 2f - 1;
124            float innerR = size / 5f;
125            int teeth = 8;
126
127            var points = new List<PointF>();
128            for (int i = 0; i < teeth * 2; i++)
129            {
130                float angle = (float)(i * Math.PI / teeth);
131                float r = (i % 2 == 0) ? outerR : outerR * 0.65f;
132                points.Add(new PointF(center.X + (float)Math.Cos(angle) * r, center.Y + (float)Math.Sin(angle) * r));
133            }
134
135            using (var path = new GraphicsPath())
136            {
137                path.AddPolygon(points.ToArray());
138                path.AddEllipse(center.X - innerR, center.Y - innerR, innerR * 2, innerR * 2);
139
140                Color fill = hovered ? Color.FromArgb(220, 220, 220) : Color.FromArgb(140, 140, 140);
141                using (var brush = new SolidBrush(fill))
142                    g.FillPath(brush, path);
143            }
144        }
145    }
146}