git subrepo clone (merge) https://github.com/HarbourMasters/otrgui.git OTRGui

subrepo:
  subdir:   "OTRGui"
  merged:   "a6066a251"
upstream:
  origin:   "https://github.com/HarbourMasters/otrgui.git"
  branch:   "master"
  commit:   "a6066a251"
git-subrepo:
  version:  "0.4.1"
  origin:   "???"
  commit:   "???"

OTRGui/libs/raylib/examples/textures/textures_sprite_button.c

@@ -0,0 +1,97 @@
+/*******************************************************************************************
+*
+*   raylib [textures] example - sprite button
+*
+*   This example has been created using raylib 2.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2019 Ramon Santamaria (@raysan5)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+#define NUM_FRAMES  3       // Number of frames (rectangles) for the button sprite texture
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [textures] example - sprite button");
+
+    InitAudioDevice();      // Initialize audio device
+
+    Sound fxButton = LoadSound("resources/buttonfx.wav");   // Load button sound
+    Texture2D button = LoadTexture("resources/button.png"); // Load button texture
+
+    // Define frame rectangle for drawing
+    float frameHeight = (float)button.height/NUM_FRAMES;
+    Rectangle sourceRec = { 0, 0, (float)button.width, frameHeight };
+
+    // Define button bounds on screen
+    Rectangle btnBounds = { screenWidth/2.0f - button.width/2.0f, screenHeight/2.0f - button.height/NUM_FRAMES/2.0f, (float)button.width, frameHeight };
+
+    int btnState = 0;               // Button state: 0-NORMAL, 1-MOUSE_HOVER, 2-PRESSED
+    bool btnAction = false;         // Button action should be activated
+
+    Vector2 mousePoint = { 0.0f, 0.0f };
+
+    SetTargetFPS(60);
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        mousePoint = GetMousePosition();
+        btnAction = false;
+
+        // Check button state
+        if (CheckCollisionPointRec(mousePoint, btnBounds))
+        {
+            if (IsMouseButtonDown(MOUSE_BUTTON_LEFT)) btnState = 2;
+            else btnState = 1;
+
+            if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) btnAction = true;
+        }
+        else btnState = 0;
+
+        if (btnAction)
+        {
+            PlaySound(fxButton);
+
+            // TODO: Any desired action
+        }
+
+        // Calculate button frame rectangle to draw depending on button state
+        sourceRec.y = btnState*frameHeight;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            DrawTextureRec(button, sourceRec, (Vector2){ btnBounds.x, btnBounds.y }, WHITE); // Draw button frame
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadTexture(button);  // Unload button texture
+    UnloadSound(fxButton);  // Unload sound
+
+    CloseAudioDevice();     // Close audio device
+
+    CloseWindow();          // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}