253 lines
9.6 KiB
C#
253 lines
9.6 KiB
C#
/*******************************************************************************************
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*
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* raylib [core] example - compute hash
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*
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* Example complexity rating: [★★☆☆] 2/4
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*
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* Example originally created with raylib 6.0, last time updated with raylib 6.0
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*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* Copyright (c) 2025 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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// NOTE: The upstream C example uses raygui (GuiTextBox/GuiButton/GuiLabel) for its UI.
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// raygui is not bound in raylib-cs, so the widgets below are minimal re-implementations
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// using plain raylib drawing/input. The hashing/Base64 logic is a faithful port.
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using System;
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using System.Numerics;
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using System.Text;
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using static Raylib_cs.Raylib;
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namespace Examples.Core;
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public unsafe partial class ComputeHash : IExample
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{
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private const int screenWidth = 800;
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private const int screenHeight = 450;
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public string Name => "Core / Compute Hash";
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public string Title => "raylib [core] example - compute hash";
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// UI controls variables
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private StringBuilder textInput;
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private bool textBoxEditMode;
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private bool btnComputeHashes;
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// Data hash values
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private uint hashCRC32;
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private uint[] hashMD5;
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private uint[] hashSHA1;
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private uint[] hashSHA256;
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// Base64 encoded data
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private string base64Text;
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private int framesCounter;
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public void Init()
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{
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textInput = new StringBuilder("The quick brown fox jumps over the lazy dog.");
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textBoxEditMode = false;
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btnComputeHashes = false;
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hashCRC32 = 0;
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hashMD5 = null;
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hashSHA1 = null;
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hashSHA256 = null;
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base64Text = null;
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framesCounter = 0;
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}
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public void Update()
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{
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// Update
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//----------------------------------------------------------------------------------
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framesCounter++;
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if (btnComputeHashes)
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{
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byte[] bytes = Encoding.UTF8.GetBytes(textInput.ToString());
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int textInputLen = bytes.Length;
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fixed (byte* textInputPtr = bytes)
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{
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int base64TextSize;
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// Encode data to Base64 string (includes NULL terminator), memory must be MemFree()
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sbyte* base64 = EncodeDataBase64(textInputPtr, textInputLen, &base64TextSize);
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base64Text = (base64 != null) ? new string(base64) : null;
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MemFree(base64); // Free Base64 text data (kept managed above)
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hashCRC32 = ComputeCRC32(textInputPtr, textInputLen); // Compute CRC32 hash code (4 bytes)
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hashMD5 = CopyHash(ComputeMD5(textInputPtr, textInputLen), 4); // Compute MD5 hash code, returns static int[4] (16 bytes)
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hashSHA1 = CopyHash(ComputeSHA1(textInputPtr, textInputLen), 5); // Compute SHA1 hash code, returns static int[5] (20 bytes)
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hashSHA256 = CopyHash(ComputeSHA256(textInputPtr, textInputLen), 8); // Compute SHA256 hash code, returns static int[8] (32 bytes)
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}
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}
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(Color.RayWhite);
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GuiLabel(new Rectangle(40, 26, 720, 32), "INPUT DATA (TEXT):", 20);
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if (GuiTextBox(new Rectangle(40, 64, 720, 32), textInput, 95, textBoxEditMode, 10)) textBoxEditMode = !textBoxEditMode;
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btnComputeHashes = GuiButton(new Rectangle(40, 64 + 40, 720, 32), "COMPUTE INPUT DATA HASHES", 10);
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GuiLabel(new Rectangle(40, 160, 720, 32), "INPUT DATA HASH VALUES:", 20);
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GuiLabel(new Rectangle(40, 200, 120, 32), "CRC32 [32 bit]:", 10);
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GuiTextBoxReadOnly(new Rectangle(40 + 120, 200, 720 - 120, 32), GetDataAsHexText(new uint[] { hashCRC32 }, 1), 10);
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GuiLabel(new Rectangle(40, 200 + 36, 120, 32), "MD5 [128 bit]:", 10);
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GuiTextBoxReadOnly(new Rectangle(40 + 120, 200 + 36, 720 - 120, 32), GetDataAsHexText(hashMD5, 4), 10);
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GuiLabel(new Rectangle(40, 200 + 36 * 2, 120, 32), "SHA1 [160 bit]:", 10);
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GuiTextBoxReadOnly(new Rectangle(40 + 120, 200 + 36 * 2, 720 - 120, 32), GetDataAsHexText(hashSHA1, 5), 10);
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GuiLabel(new Rectangle(40, 200 + 36 * 3, 120, 32), "SHA256 [256 bit]:", 10);
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GuiTextBoxReadOnly(new Rectangle(40 + 120, 200 + 36 * 3, 720 - 120, 32), GetDataAsHexText(hashSHA256, 8), 10);
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GuiLabel(new Rectangle(40, 200 + 36 * 5 - 30, 320, 32), "BONUS - BAS64 ENCODED STRING:", 10);
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GuiLabel(new Rectangle(40, 200 + 36 * 5, 120, 32), "BASE64 ENCODING:", 10);
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GuiTextBoxReadOnly(new Rectangle(40 + 120, 200 + 36 * 5, 720 - 120, 32), base64Text, 10);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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public void Unload()
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{
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}
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//----------------------------------------------------------------------------------
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// Module Functions Definition
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//----------------------------------------------------------------------------------
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private static uint[] CopyHash(uint* data, int count)
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{
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if (data == null) return null;
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uint[] result = new uint[count];
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for (int i = 0; i < count; i++) result[i] = data[i];
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return result;
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}
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private static string GetDataAsHexText(uint[] data, int dataSize)
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{
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if ((data != null) && (dataSize > 0) && (dataSize < ((128 / 8) - 1)))
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{
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StringBuilder text = new StringBuilder();
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for (int i = 0; i < dataSize; i++) text.Append(data[i].ToString("X8"));
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return text.ToString();
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}
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return "00000000";
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}
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//----------------------------------------------------------------------------------
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// Minimal raygui-like widgets (plain raylib re-implementation)
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//----------------------------------------------------------------------------------
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private static void GuiLabel(Rectangle bounds, string text, int fontSize)
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{
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DrawText(text, (int)bounds.X, (int)(bounds.Y + (bounds.Height - fontSize) / 2), fontSize, Color.DarkGray);
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}
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private static bool GuiButton(Rectangle bounds, string text, int fontSize)
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{
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bool pressed = false;
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Vector2 mouse = GetMousePosition();
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bool hover = CheckCollisionPointRec(mouse, bounds);
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Color fill = hover ? (IsMouseButtonDown(MouseButton.Left) ? Color.SkyBlue : Color.LightGray) : Color.RayWhite;
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DrawRectangleRec(bounds, fill);
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DrawRectangleLinesEx(bounds, 1, hover ? Color.Blue : Color.Gray);
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int textWidth = MeasureText(text, fontSize);
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DrawText(text, (int)(bounds.X + (bounds.Width - textWidth) / 2), (int)(bounds.Y + (bounds.Height - fontSize) / 2), fontSize, Color.DarkGray);
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if (hover && IsMouseButtonReleased(MouseButton.Left)) pressed = true;
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return pressed;
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}
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private bool GuiTextBox(Rectangle bounds, StringBuilder text, int maxChars, bool editMode, int fontSize)
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{
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bool pressed = false;
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Vector2 mouse = GetMousePosition();
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bool hover = CheckCollisionPointRec(mouse, bounds);
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if (editMode)
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{
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int key = GetCharPressed();
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while (key > 0)
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{
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if ((key >= 32) && (key <= 125) && (text.Length < maxChars - 1))
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{
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text.Append((char)key);
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}
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key = GetCharPressed();
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}
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if (IsKeyPressed(KeyboardKey.Backspace) && (text.Length > 0)) text.Remove(text.Length - 1, 1);
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}
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DrawRectangleRec(bounds, Color.RayWhite);
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DrawRectangleLinesEx(bounds, editMode ? 2 : 1, editMode ? Color.Red : (hover ? Color.Blue : Color.Gray));
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string content = text.ToString();
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DrawText(content, (int)bounds.X + 4, (int)(bounds.Y + (bounds.Height - fontSize) / 2), fontSize, Color.DarkGray);
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if (editMode && ((framesCounter / 20) % 2 == 0))
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{
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DrawText("_", (int)bounds.X + 4 + MeasureText(content, fontSize), (int)(bounds.Y + (bounds.Height - fontSize) / 2), fontSize, Color.DarkGray);
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}
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if (hover && IsMouseButtonPressed(MouseButton.Left)) pressed = true;
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return pressed;
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}
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private static void GuiTextBoxReadOnly(Rectangle bounds, string text, int fontSize)
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{
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DrawRectangleRec(bounds, Color.LightGray);
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DrawRectangleLinesEx(bounds, 1, Color.Gray);
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if (text != null) DrawText(text, (int)bounds.X + 4, (int)(bounds.Y + (bounds.Height - fontSize) / 2), fontSize, Color.Gray);
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}
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public static int Main()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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InitWindow(screenWidth, screenHeight, "raylib [core] example - compute hash");
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SetTargetFPS(60);
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//--------------------------------------------------------------------------------------
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var game = new ComputeHash();
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game.Init();
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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game.Update();
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}
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game.Unload();
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// De-Initialization
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//--------------------------------------------------------------------------------------
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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}
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