main.cpp

#define REAPERAPI_NO_LICE
#define REAPERAPI_IMPLEMENT
#include "lice.h"
#include "reaper_plugin_functions.h"

#include <memory>
#include <map>

struct MyDLGTEMPLATE : DLGTEMPLATE
{
	WORD ext[3];
	MyDLGTEMPLATE()
	{
		memset(this, 0, sizeof(*this));
	}
};

HINSTANCE g_hinst;
HWND g_mainwdn;

class LiceWindow;

std::map<HWND, LiceWindow*> g_windowmap;

class LiceWindow
{
public:
	LiceWindow(int x,int y,int w,int h)
	{
		m_bitmap = std::make_unique<LICE_SysBitmap>(w, h);
		MyDLGTEMPLATE t;
		t.style = WS_DLGFRAME|WS_CAPTION;
		t.cx = w;
		t.cy = h;
		t.x = x;
		t.y = y;
		m_x = x; 
		m_y = y;
		m_w = w;
		m_h = h;
		m_hwnd = CreateDialogIndirectParam(g_hinst, &t, g_mainwdn, (DLGPROC)EditorProc, (LPARAM)this);
		if (m_hwnd)
		{
			g_windowmap[m_hwnd] = this;
			ShowWindow(m_hwnd, SW_SHOW);
		
		}
	}
	virtual ~LiceWindow()
	{
		if (m_hwnd)
		{
			DestroyWindow(m_hwnd);
			g_windowmap.erase(m_hwnd);
		}
	}
	virtual void draw(LICE_IBitmap* bm) = 0;
private:
	HWND m_hwnd = 0;
	std::unique_ptr<LICE_SysBitmap> m_bitmap;
	int m_x, m_y, m_w, m_h = 0;
	static INT_PTR CALLBACK EditorProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
	{
		
		if (msg == WM_INITDIALOG)
		{
			return 0;
		}
		else if (msg == WM_CLOSE)
		{
			EndDialog(hwnd, IDOK);
			return 0;
		}
		else if (msg == WM_PAINT)
		{
			LiceWindow* lwnd = g_windowmap[hwnd];
			if (lwnd)
			{
				lwnd->draw(lwnd->m_bitmap.get());
				PAINTSTRUCT ps;
				HDC hdc = BeginPaint(hwnd, &ps);
				BitBlt(hdc, 0,
					0,
					lwnd->m_bitmap->getWidth(),
					lwnd->m_bitmap->getHeight(),
					lwnd->m_bitmap->getDC(), 0, 0, SRCCOPY);

				EndPaint(hwnd, &ps);
			}
		}
		return 0;
	}

};

class TestWindow : public LiceWindow
{
public:
	TestWindow(int x, int y, int w, int h) : LiceWindow(x, y, w, h)
	{}
	void draw(LICE_IBitmap* bm) override
	{
		LICE_FillRect(bm, 0, 0, bm->getWidth(), bm->getHeight(), LICE_RGBA(0, 0, 0, 255));
		LICE_Line(bm, 0, 0, 100, 100, LICE_RGBA(255, 255, 255, 255));
		LICE_Line(bm, 0, 100, 100, 0, LICE_RGBA(0, 255, 0, 255));
	}
};

extern "C"
{
	REAPER_PLUGIN_DLL_EXPORT int REAPER_PLUGIN_ENTRYPOINT(REAPER_PLUGIN_HINSTANCE hInstance, reaper_plugin_info_t *rec) {
		if (rec != nullptr)
		{
			if (REAPERAPI_LoadAPI(rec->GetFunc) > 0) return 0;
			g_mainwdn = rec->hwnd_main;
			g_hinst = hInstance;
			TestWindow* wind = new TestWindow(10, 50, 100, 100);
			return 1;
		}
		return 0;
	}
}