cgf/Window.hpp at main · willihay/cgf · GitHub

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#pragma once

#include <windows.h>
#include <string>
#include <vector>
#include <cstdlib>
#include <cassert>
#include <cmath> // for ceil, floor
#include "Color.hpp"

#define PI 3.1415926535897932384626433832795

enum MENU_ITEM { LINE_DDA = 0, LINE_BRESENHAM, LINE_ANIMATE, OBJECT_CIRCLE, OBJECT_ELLIPSE, NUM_MENU_ITEMS };

// Prototypes
/**
 * @brief Window procedure to handle messages sent to the window.
 *
 * @param hwnd Handle to the window.
 * @param msg Message identifier.
 * @param wParam Additional message information.
 * @param lParam Additional message information.
 * @return LRESULT Result of the message processing.
 */
LRESULT CALLBACK MyWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
bool IsMenuItemActive(const enum MENU_ITEM menuItem);
void ClearFirstPoint();
void SetFirstPoint(unsigned int x, unsigned int y);
void SetMenuItem(HMENU hMenu, MENU_ITEM menuItem, UINT check);
void SetMousePosStr(DWORD x, DWORD y);
int roundToInt(float n);
unsigned int roundToUInt(float n);

// Data used by the Window Procedure
namespace
{
	HWND gHwnd;
    std::vector<bool> menuChecked(NUM_MENU_ITEMS, false);
    std::string gFirstPosStr;
    std::string gFirstPosPrefix = " First Point: ";
    std::string gMousePosStr;
    std::string gPosPrefix = "(";
    std::string gPosSeparator = ", ";
    std::string gPosSuffix = ")";
} // namespace anon

namespace CGF
{

////////////////////////////////////////////////////////////////////////////////
/*!
	@class	Window
	@brief	Launches a window in the Win32 environment
*/
////////////////////////////////////////////////////////////////////////////////
class Window
{
public:
    Window();
    ~Window();

    bool Create(HINSTANCE hInstance, const std::string & windowName, const unsigned int width, const unsigned int height);
    unsigned int Width() const;
    unsigned int Height() const;
    void SetPixel(const unsigned int x, const unsigned int y, const Color & color) const;
    void ProcessMessages();
    void Present();
    bool Running() const;

private:

    // Prevent copying
	Window(const Window & rhs) = delete;
	Window & operator=(const Window & rhs) = delete;

	// Internal use
    bool RegisterWndClass(HINSTANCE hInstance);
    void UnregisterWndClass();
    void CreateSecondaryBuffer(const unsigned int width, const unsigned int height);

	unsigned int mWidth, mHeight;
	bool mRunning;

    // Main window
	HWND		mHwnd;					// The window handle
    HWND        mHtoolbar;              // The toolbar handle
	HDC			mHdc;					// The device context of the window
	HINSTANCE	mWindowInstance;		// The instance ID of the application
	std::string mClassName;

    // Secondary window
    HBITMAP mBitmap;
    HBITMAP mOldBitmap;
    HDC mBitmapDC;
    unsigned int * mSurface;

};  // class Window

}   // namespace CGF