SH

#pragma warning(disable:4996)
#undef UNICODE
#define _USE_MATH_DEFINES
#include <windows.h>
#include "KWnd.h"
#include <cmath>
#include <string>
#include <sstream>

using namespace std;

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
void DrawBarChart(HDC hDC);
void DrawPieChart(HDC hDC);
void fillString(string& str, string name, int rating);
string fromIntToString(int i);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	MSG msg;
	KWnd mainWnd("MyWin", hInstance, nCmdShow, WndProc);
	while (GetMessage(&msg, NULL, 0, 0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}
	return (msg.wParam);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	PAINTSTRUCT ps;
	HDC hDC;
	//
	const int Q_PARTICIPANT = 6;
	const int PIE_CHART_WIDTH = 314;
	const int PIE_CHART_HEIGHT = 314;
	const int BAR_CHART_WIDTH = 24;
	const int BAR_CHART_HEIGHT = 100;
	//coordinates
	static int sx, sy;
	static int x_scr1, y_scr1, x_scr2, y_scr2;
	//pens
	static HPEN hPenAxis, hPenGraphic;
	//brush
	static HBRUSH hBrushArr[Q_PARTICIPANT];
	//font
	static HFONT hFontName;
	static LOGFONT lf;
	//data
	string sNames[Q_PARTICIPANT] = { "Smith","Alzheimer","Freud","Tesla","Black","Parkinson" };
	static int iRating[Q_PARTICIPANT] = { 76,30,22,54,70,95 };
	static int iRatingSum = 0;
	string info;
	//values for pie
	double angle;
	double r; //radius
	static double start;


	switch (message) {
	case WM_CREATE:
		//create pens
		hPenAxis = CreatePen(PS_SOLID, 0.5, RGB(0, 0, 0));
		hPenGraphic = CreatePen(PS_SOLID, 0.5, RGB(50, 200, 80));
		//create brush
		hBrushArr[0] = CreateSolidBrush(RGB(255, 165, 0));
		hBrushArr[1] = CreateSolidBrush(RGB(0, 255, 165));
		hBrushArr[2] = CreateSolidBrush(RGB(165, 0, 255));
		hBrushArr[3] = CreateSolidBrush(RGB(165, 255, 0));
		hBrushArr[4] = CreateSolidBrush(RGB(0, 165, 255));
		hBrushArr[5] = CreateSolidBrush(RGB(255, 0, 165));
		//init logfont
		lf.lfCharSet = DEFAULT_CHARSET;
		lf.lfPitchAndFamily = DEFAULT_PITCH;
		strcpy_s(lf.lfFaceName, "My Font");
		lf.lfWeight = FW_NORMAL;
		lf.lfEscapement = 900;
		//count rating sum
		for (int i = 0; i < Q_PARTICIPANT; i++)
		{
			iRatingSum +=iRating[i];
		}
		break;
	case WM_SIZE:
		sx = LOWORD(lParam);
		sy = HIWORD(lParam);
		//init logfont
		break;
	case WM_PAINT:
		//begin paint
		hDC = BeginPaint(hWnd, &ps);
		//create font
		lf.lfHeight = sx / 400;
		hFontName = CreateFontIndirect(&lf);
		//devide space
		MoveToEx(hDC, sx / 2, 0, NULL);
		LineTo(hDC, sx / 2, sy);
		//
		//Draw bar chart
		//
		//set modes
		SetMapMode(hDC, MM_ANISOTROPIC);
		SetWindowExtEx(hDC, BAR_CHART_WIDTH, BAR_CHART_HEIGHT, NULL);
		SetViewportExtEx(hDC, (sx / 2 - 90), -(sy - 90), NULL);
		SetViewportOrgEx(hDC, 0+15, sy-15, NULL);
		//draw axis
		SelectObject(hDC, hPenAxis);
		MoveToEx(hDC, 0, BAR_CHART_HEIGHT, NULL);
		LineTo(hDC, 0, 0);
		LineTo(hDC, BAR_CHART_WIDTH, 0);
		//draw graphic
		SelectObject(hDC, hPenGraphic);
		SelectObject(hDC, hFontName);
		SetTextAlign(hDC, TA_RIGHT | TA_TOP);
		SetBkMode(hDC, TRANSPARENT);
		for (int i = 0; i < Q_PARTICIPANT; i++)
		{
			SelectObject(hDC, hBrushArr[i]);
			Rectangle(hDC, 4*i+1, iRating[i], 4*i+3, 0);
			TextOut(hDC, 4 * i + 2, iRating[i], fromIntToString(iRating[i]).c_str(), strlen(fromIntToString(iRating[i]).c_str()));
			TextOut(hDC, 4 * i + 3, iRating[i], sNames[i].c_str(), strlen(sNames[i].c_str()));
		}
		DeleteObject(hFontName);
		//
		//Draw pie chart
		//
		//create font
		lf.lfHeight = sx / 80;
		hFontName = CreateFontIndirect(&lf);
		//set modes
		SetMapMode(hDC, MM_ISOTROPIC);
		SetWindowExtEx(hDC, PIE_CHART_WIDTH, PIE_CHART_WIDTH, NULL);
		SetViewportExtEx(hDC, sx / 2, -(sy / 2), NULL);
		SetViewportOrgEx(hDC, 3 * sx / 4, sy / 2, NULL);
		//draw graphic
		SelectObject(hDC, hFontName);
		r = PIE_CHART_WIDTH / 2;
		start = 0;
		for (int i = 0; i < Q_PARTICIPANT; i++)
		{
			SelectObject(hDC, hBrushArr[i]);
			x_scr1 = r * cos(2 * M_PI* start / iRatingSum);
			y_scr1 = r * sin(2 * M_PI* start / iRatingSum);
			x_scr2 = r * cos(2 * M_PI* (iRating[i] + start) / iRatingSum);
			y_scr2 = r * sin(2 * M_PI* (iRating[i] + start) / iRatingSum);
			start += iRating[i];
			Pie(hDC, -PIE_CHART_WIDTH / 2, -PIE_CHART_WIDTH / 2, PIE_CHART_WIDTH / 2, PIE_CHART_WIDTH / 2, x_scr1, y_scr1, x_scr2, y_scr2);
			fillString(info, sNames[i], iRating[i]);
			TextOut(hDC, x_scr2, y_scr2, info.c_str(), strlen(info.c_str()));
		}
		//delete font
		DeleteObject(hFontName);
		//end paint
		EndPaint(hWnd, &ps);
		break;
	case WM_DESTROY:
		//delete pens
		DeleteObject(hPenAxis);
		DeleteObject(hPenGraphic);
		//delete brush
		for (int i = 0; i < Q_PARTICIPANT; i++)
		{
			DeleteObject(hBrushArr[i]);
		}
		PostQuitMessage(0);
		break;
	default: return DefWindowProc(hWnd, message, wParam, lParam);
	}
	return 0;
}

void fillString(string& str, string name, int rating)
{
	stringstream stream;
	stream << name << " " << rating << "%";
	str = stream.str();
}
string fromIntToString(int i)
{
	stringstream stream;
	stream << i << "%";
	return stream.str();
}

//r = PIE_CHART_WIDTH / 2;
//MoveToEx(hDC, r * cos(0), r * sin(0), NULL);
//for (angle = 0; angle <= 2 * M_PI; angle += 0.01)
//{
//	x_scr = r * cos(angle);
//	y_scr = r * sin(angle);
//	LineTo(hDC, x_scr, y_scr);
//}