//
// This code is part of Document Solutions for Imaging demos.
// Copyright (c) MESCIUS inc. All rights reserved.
//
using System;
using System.IO;
using System.Drawing;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using GrapeCity.Documents.Drawing;
using GrapeCity.Documents.Text;
using GrapeCity.Documents.Imaging;
using GrapeCity.Documents.Svg;
using GCTEXT = GrapeCity.Documents.Text;
using GCDRAW = GrapeCity.Documents.Drawing;
using DsImagingWeb.Demos.Common;

namespace DsImagingWeb.Demos
{
    // Use GcSvgDocument to render a few images used as illustrations
    // in the SVG spec.
    public class SvgSpecArt
    {
        public GcBitmap GenerateImage(Size pixelSize, float dpi, bool opaque, string[] sampleParams = null)
        {
            // Load images from resources:
            var fnames = new List<string>() { "dash-path.svg", "opacity.svg", "paths.svg", "shadowstyle.svg", "units.svg", };
            var images = new List<(string, GcSvgDocument)>();
            foreach (var f in fnames)
                images.Add((f, GcSvgDocument.FromFile(Path.Combine("Resources", "SvgSpecArt", f))));

            float margin = dpi / 2;
            float gapy = dpi / 4;
            var ip = new PointF(margin, margin);

            // Render the images:
            var bmp = new GcBitmap(pixelSize.Width, pixelSize.Height, opaque, dpi, dpi);
            using var g = bmp.CreateGraphics(Color.White);
            for (int i = 0; i < images.Count(); ++i)
            {
                var svg = images[i].Item2;
                var s = svg.GetIntrinsicSize(SvgLengthUnits.Pixels);
                g.DrawSvg(svg, ip);
                ip.Y += s.Height + gapy;
            }
            // Dispose images after saving the result:
            images.ForEach(t_ => t_.Item2.Dispose());
            // Done:
            return bmp;
        }
    }
}