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Move photo processing code to a general class.

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Natalia Portillo
2019-06-01 01:44:03 +01:00
parent a57a8b4b8e
commit c43f88a936
5 changed files with 220 additions and 206 deletions
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138
cicm_web/Helpers/SvgRender.cs Normal file
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/******************************************************************************
// Canary Islands Computer Museum Website
// ----------------------------------------------------------------------------
//
// Filename : SvgRender.cs
// Author(s) : Natalia Portillo <claunia@claunia.com>
//
// --[ Description ] ----------------------------------------------------------
//
// Render SVG country flags.
//
// --[ License ] --------------------------------------------------------------
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// ----------------------------------------------------------------------------
// Copyright © 2003-2018 Natalia Portillo
*******************************************************************************/
using System;
using System.IO;
using Cicm.Database.Models;
using SkiaSharp;
using SKSvg = SkiaSharp.Extended.Svg.SKSvg;
namespace cicm_web.Helpers
{
public static class SvgRender
{
public static void RenderCountries()
{
if(!Directory.Exists("wwwroot/assets/flags/countries")) return;
foreach(string file in Directory.GetFiles("wwwroot/assets/flags/countries/", "*.svg",
SearchOption.TopDirectoryOnly))
{
SKSvg svg = null;
string flagname = Path.GetFileNameWithoutExtension(file);
foreach(string format in new[] {"png", "webp"})
{
if(!Directory.Exists(Path.Combine("wwwroot/assets/flags/countries", format))) ;
Directory.CreateDirectory(Path.Combine("wwwroot/assets/flags/countries", format));
SKEncodedImageFormat skFormat;
switch(format)
{
case "webp":
skFormat = SKEncodedImageFormat.Webp;
break;
default:
skFormat = SKEncodedImageFormat.Png;
break;
}
foreach(int multiplier in new[] {1, 2, 3})
{
if(!Directory.Exists(Path.Combine("wwwroot/assets/flags/countries", format, $"{multiplier}x"))
) ;
Directory.CreateDirectory(Path.Combine("wwwroot/assets/flags/countries", format,
$"{multiplier}x"));
string rendered = Path.Combine("wwwroot/assets/flags/countries", format, $"{multiplier}x",
flagname + $".{format}");
if(File.Exists(rendered)) continue;
Console.WriteLine("Rendering {0}", rendered);
if(svg == null)
{
svg = new SKSvg();
svg.Load(file);
}
SKRect svgSize = svg.Picture.CullRect;
float svgMax = Math.Max(svgSize.Width, svgSize.Height);
float canvasMin = 32 * multiplier;
float scale = canvasMin / svgMax;
SKMatrix matrix = SKMatrix.MakeScale(scale, scale);
SKBitmap bitmap = new SKBitmap((int)(svgSize.Width * scale), (int)(svgSize.Height * scale));
SKCanvas canvas = new SKCanvas(bitmap);
canvas.DrawPicture(svg.Picture, ref matrix);
canvas.Flush();
SKImage image = SKImage.FromBitmap(bitmap);
SKData data = image.Encode(skFormat, 100);
FileStream outfs = new FileStream(rendered, FileMode.CreateNew);
data.SaveTo(outfs);
outfs.Close();
}
}
}
}
public static void ImportCompanyLogos(cicmContext context)
{
if(!Directory.Exists("wwwroot/assets/incoming")) return;
foreach(string file in Directory.GetFiles("wwwroot/assets/incoming", "company_*.svg",
SearchOption.TopDirectoryOnly))
{
string filename = Path.GetFileNameWithoutExtension(file);
if(!filename.StartsWith("company_")) continue;
string[] pieces = filename.Split('_');
if(pieces.Length != 3) continue;
Guid guid = Guid.NewGuid();
if(!int.TryParse(pieces[1], out int companyId)) continue;
if(!int.TryParse(pieces[2], out int year)) continue;
try
{
context.CompanyLogos.Add(new CompanyLogo {CompanyId = companyId, Year = year, Guid = guid});
context.SaveChanges();
}
catch(Exception) { continue; }
File.Move(file, $"wwwroot/assets/logos/{guid}.svg");
}
}
}
}