// Copyright (C) 2003-2026, Foxit Software Inc..
// All Rights Reserved.
//
// http://www.foxitsoftware.com
//
// The following code is copyrighted and contains proprietary information and trade secrets of Foxit Software Inc..
// You cannot distribute any part of Foxit PDF SDK to any third party or general public,
// unless there is a separate license agreement with Foxit Software Inc. which explicitly grants you such rights.
//
// This file contains an example to demonstrate how to use Foxit PDF SDK to do bitmap transformation,
// such as flipping, stretching, and so on.

using System;
using System.IO;
using System.Runtime.InteropServices;

using foxit;
using foxit.common;
using foxit.common.fxcrt;
using foxit.pdf;

namespace bitmap_transformCS
{
    class bitmap_transform
    {
        public static void SaveBitmap(foxit.common.Bitmap bitmap, string file_path)
        {
            using (foxit.common.Image image = new foxit.common.Image())
            {
                image.AddFrame(bitmap);
                image.SaveAs(file_path);
            }
        }

        static void Main(string[] args)
        {
            string sn = "Rew1vB0TqoMIxX444UcpScARWdhgJpsJfzmyMLR32a0+EgrCjp2NaQ==";
            string key = "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";
            // Initialize library
            ErrorCode error_code = Library.Initialize(sn, key);
            if (error_code != ErrorCode.e_ErrSuccess)
            {
                Console.WriteLine("Library Initialize Error: {0}\n", error_code);
                return;
            }

            string output_path = "../output_files/bitmap_transform/";
            System.IO.Directory.CreateDirectory(output_path);

            string input_path = "../input_files/";
            string input_file = input_path + "Foxit.bmp";

            try
            {
                using (foxit.common.Image image = new foxit.common.Image(input_file))
                {
                    using (foxit.common.Bitmap bitmap = image.GetFrameBitmap(0))
                    {
                        int width = bitmap.GetWidth();
                        int height = bitmap.GetHeight();

                        string output_file = "";

                        // Stretch bitmap.
                        foxit.common.Bitmap stretch_bitmap = bitmap.StretchTo(width / 2, height * 2, foxit.common.Bitmap.InterpolationFlag.e_Downsample, null);
                        output_file = output_path + "stetch_bitmap_Foxit.bmp";
                        SaveBitmap(stretch_bitmap, output_file);
                        stretch_bitmap.Dispose();

                        // Transform bitmap.
                        int left = 0;
                        int top = 0;
                        Matrix2D matrix = new Matrix2D(width * 2.0f, 0.0f, 0.0f, height / 2.0f, 0.0f, 0.0f);
                        foxit.common.Bitmap transform_bitmap = bitmap.TransformTo(matrix, foxit.common.Bitmap.InterpolationFlag.e_Downsample, ref left, ref top, null);
                        output_file = output_path + "transform_bitmap_Foxit.bmp";
                        SaveBitmap(transform_bitmap, output_file);
                        transform_bitmap.Dispose();

                        // Vertical and horizontal flip bitmap.
                        foxit.common.Bitmap flip_bitmap = bitmap.Flip(true, true);
                        output_file = output_path + "flip_horz_vert_Foxit.bmp";
                        SaveBitmap(flip_bitmap, output_file);
                        flip_bitmap.Dispose();

                        // Swap the X and Y axis, and then vertical and horizontal flip bitmap.
                        foxit.common.Bitmap swap_xy_bitmap = bitmap.SwapXY(true, true, null);
                        output_file = output_path + "swap_xy_flip_horz_vert_Foxit.bmp";
                        SaveBitmap(swap_xy_bitmap, output_file);
                        swap_xy_bitmap.Dispose();

                        // Calculate the bounding box according to the given background color.
                        RectI rect = bitmap.CalculateBBoxByColor(Convert.ToUInt32(0xFFFDFDFD));
                        foxit.common.Bitmap clone_bitmap;
                        if (rect.Height() > 0 && rect.Width() > 0)
                        {
                            clone_bitmap = bitmap.Clone(rect);
                            output_file = output_path + "calculate_bbox_by_color_0xFFFDFDFD_foxit.bmp";
                            SaveBitmap(clone_bitmap, output_file);
                            clone_bitmap.Dispose();
                        }
                        else
                        {
                            Console.WriteLine("[Warning] The result of bounding box (according to the given background color) is an empty rectangle.\r\n");
                        }
                        // Detect the bounding box of content according to the given color difference between content and margin.
                        rect = bitmap.DetectBBoxByColorDiffer(20, 64);
                        if (rect.Height() > 0 && rect.Width() > 0)
                        {
                            clone_bitmap = bitmap.Clone(rect);
                            output_file = output_path + "detect_bbox_by color_differ_20_64_Foxit.bmp";
                            SaveBitmap(clone_bitmap, output_file);
                            clone_bitmap.Dispose();
                        }
                        else
                        {
                            Console.WriteLine("[Warning] The result of bounding box (according to the given color difference between content and margin) is an empty rectangle.\r\n");
                        }
                    }
                }
            }
            catch (foxit.PDFException e)
            {
                Console.WriteLine(e.Message);
            }
            Library.Release();
        }
    }
}
