Test gui examples

examples/gui/portable_window/portable_window.go

@@ -0,0 +1,99 @@
+package main
+
+import (
+	"fmt"
+
+	gui "github.com/gen2brain/raylib-go/raygui"
+	rl "github.com/gen2brain/raylib-go/raylib"
+)
+
+/*******************************************************************************************
+*
+*   raygui - portable window
+*
+*   DEPENDENCIES:
+*       raylib 4.0  - Windowing/input management and drawing.
+*       raygui 3.0  - Immediate-mode GUI controls.
+*
+*   COMPILATION (Windows - MinGW):
+*       gcc -o $(NAME_PART).exe $(FILE_NAME) -I../../src -lraylib -lopengl32 -lgdi32 -std=c99
+*
+*   LICENSE: zlib/libpng
+*
+*   Copyright (c) 2016-2022 Ramon Santamaria (@raysan5)
+*
+**********************************************************************************************/
+
+// ------------------------------------------------------------------------------------
+// Program main entry point
+// ------------------------------------------------------------------------------------
+func main() {
+	// Initialization
+	//---------------------------------------------------------------------------------------
+	const (
+		screenWidth  = 800
+		screenHeight = 600
+	)
+
+	rl.SetConfigFlags(rl.FlagWindowUndecorated)
+	rl.InitWindow(screenWidth, screenHeight, "raygui - portable window")
+
+	// General variables
+	var (
+		mousePosition  = rl.Vector2{0, 0}
+		windowPosition = rl.Vector2{500, 200}
+		panOffset      = mousePosition
+		dragWindow     = false
+	)
+
+	rl.SetWindowPosition(int(windowPosition.X), int(windowPosition.Y))
+
+	exitWindow := false
+
+	rl.SetTargetFPS(60)
+	//--------------------------------------------------------------------------------------
+
+	// Main game loop
+	for !exitWindow && !rl.WindowShouldClose() { // Detect window close button or ESC key
+		// Update
+		//----------------------------------------------------------------------------------
+		mousePosition = rl.GetMousePosition()
+
+		if rl.IsMouseButtonPressed(rl.MouseLeftButton) {
+			if (rl.CheckCollisionPointRec(mousePosition, rl.Rectangle{0, 0, screenWidth, 20})) {
+				dragWindow = true
+				panOffset = mousePosition
+			}
+		}
+
+		if dragWindow {
+			windowPosition.X += (mousePosition.X - panOffset.X)
+			windowPosition.Y += (mousePosition.Y - panOffset.Y)
+
+			if rl.IsMouseButtonReleased(rl.MouseLeftButton) {
+				dragWindow = false
+			}
+
+			rl.SetWindowPosition(int(windowPosition.X), int(windowPosition.Y))
+		}
+		//----------------------------------------------------------------------------------
+
+		// Draw
+		//----------------------------------------------------------------------------------
+		rl.BeginDrawing()
+
+		rl.ClearBackground(rl.RayWhite)
+
+		exitWindow = gui.WindowBox(rl.Rectangle{0, 0, screenWidth, screenHeight}, "#198# PORTABLE WINDOW")
+
+		rl.DrawText(fmt.Sprintf("Mouse Position: [ %.0f, %.0f ]", mousePosition.X, mousePosition.Y), 10, 40, 10, rl.DarkGray)
+
+		rl.EndDrawing()
+		//----------------------------------------------------------------------------------
+	}
+
+	// De-Initialization
+	//--------------------------------------------------------------------------------------
+	rl.CloseWindow() // Close window and OpenGL context
+	//--------------------------------------------------------------------------------------
+}