// for finding memory leaks in debug mode with Visual Studio #if defined _DEBUG && defined _MSC_VER#include <crtdbg.h>#endif #include <stdio.h>#include <stdlib.h>#include <stdint.h>#include <stdbool.h>#include <math.h>#include <sys/stat.h>#ifdef _WIN32#define WIN32_MEAN_AND_LEAN#include <windows.h>#else#include <unistd.h>#endif#include <SDL2/SDL.h>#include "config.h"#include "palette.h"#include "gui.h"#include "hpc.h" #define CLAMP(x, low, high) (((x) > (high)) ? (high) : (((x) < (low)) ? (low) : (x))) #ifdef _MSC_VER#pragma warning(disable: 4204)#pragma warning(disable: 4221)#endif static hpc_t vblankHpc;static SDL_Window *window;static SDL_Renderer *renderer;static SDL_Texture *texture; // globalsvolatile bool programRunning, redrawScreen, allowSigterm = true;uint32_t *frameBuffer;keyb_t keyb;mouse_t mouse; static bool setupVideo(void);static void readMouseXY(void);static void handleInput(void); #ifdef __APPLE__static void osxSetDirToProgramDirFromArgs(char **argv);#endif int main(int argc, char *argv[]){#if defined _WIN32 || defined __APPLE__	SDL_version sdlVer;#endif 	// for finding memory leaks in debug mode with Visual Studio#if defined _DEBUG && defined _MSC_VER	_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);#endif 	(void)argc;	(void)argv;		SDL_SetThreadPriority(SDL_THREAD_PRIORITY_HIGH);	SDL_EnableScreenSaver(); // allow screensaver to activate		// on Windows and macOS, test what version SDL2.DLL is (against library version used in compilation)#if defined _WIN32 || defined __APPLE__	SDL_GetVersion(&sdlVer);	if (sdlVer.major != SDL_MAJOR_VERSION || sdlVer.minor != SDL_MINOR_VERSION || sdlVer.patch != SDL_PATCHLEVEL)	{#ifdef _WIN32		showErrorMsgBox("SDL2.dll is not the expected version, the program will terminate.\n\n" \		                "Loaded dll version: %d.%d.%d\n" \		                "Required (compiled with) version: %d.%d.%d",		                sdlVer.major, sdlVer.minor, sdlVer.patch,		                SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);#else		showErrorMsgBox("The loaded SDL2 library is not the expected version, the program will terminate.\n\n" \		                "Loaded library version: %d.%d.%d\n" \		                "Required (compiled with) version: %d.%d.%d",		                sdlVer.major, sdlVer.minor, sdlVer.patch,		                SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL);#endif		return 0;	}#endif #ifdef _WIN32#ifndef _MSC_VER	SetProcessDPIAware();#endif#endif #ifdef __APPLE__	osxSetDirToProgramDirFromArgs(argv);#endif 	if (!setupVideo())	{		SDL_Quit();		return 0;	}		SDL_StopTextInput();		hpc_Init();	hpc_SetDurationInHz(&vblankHpc, 60); 	setupGUI();	redrawScreen = true; 	programRunning = true;		hpc_ResetCounters(&vblankHpc); // this must be the last thing we do before entering the main loop	while (programRunning)	{		readMouseXY();		handleInput(); 		if (redrawScreen)		{			redrawScreen = false; 			// redraw screen			SDL_UpdateTexture(texture, NULL, frameBuffer, SCREEN_W * sizeof (int32_t));			SDL_RenderClear(renderer);			SDL_RenderCopy(renderer, texture, NULL, NULL);			SDL_RenderPresent(renderer);		} 		hpc_Wait(&vblankHpc);	} 	if (loadedFile != NULL) free(loadedFile);	free(frameBuffer);	SDL_Quit(); 	return 0;} static void readMouseXY(void){	int32_t windowX, windowY, mx, my; 	SDL_GetGlobalMouseState(&mx, &my);	SDL_GetWindowPosition(window, &windowX, &windowY); 	mx -= windowX;	my -= windowY; 	mouse.x = (int32_t)(mx * mouse.fMouseXMul);	mouse.y = (int32_t)(my * mouse.fMouseYMul);} static void showAskToSaveDialog(void){	int32_t whichButtonPressed; 	const SDL_MessageBoxButtonData buttons[2] =	{		{ SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT, 0, "No"  },		{ SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, 1, "Yes" },	}; 	const SDL_MessageBoxData messageBoxData =	{		SDL_MESSAGEBOX_WARNING,		window,		"Warning",		"Colors are unsaved. Save before quitting?",		SDL_arraysize(buttons),		buttons,		NULL	}; 	if (SDL_ShowMessageBox(&messageBoxData, &whichButtonPressed) < 0)	{		allowSigterm = true;		programRunning = false;		return;	} 	if (whichButtonPressed == 1)		savePalette(0); 	programRunning = false;} void showErrorMsgBox(const char *fmt, ...){	char strBuf[1024];	va_list args; 	// format the text string	va_start(args, fmt);	vsnprintf(strBuf, sizeof (strBuf), fmt, args);	va_end(args); 	// window can be NULL here, no problem...	SDL_ShowSimpleMessageBox(SDL_MESSAGEBOX_ERROR, "Error", strBuf, NULL);} static void handleInput(void){	SDL_Event inputEvent; 	while (SDL_PollEvent(&inputEvent))	{		if (inputEvent.type == SDL_QUIT && allowSigterm)		{			if (!configIsSaved)			{				allowSigterm = false;				showAskToSaveDialog();			}			else			{				programRunning = false;			}		}		else if (inputEvent.type == SDL_KEYDOWN)		{			keyDownHandler(inputEvent.key.keysym.sym);		}		else if (inputEvent.type == SDL_MOUSEBUTTONUP)		{			if (inputEvent.button.button == SDL_BUTTON_LEFT)				mouseButtonUpHandler();		}		else if (inputEvent.type == SDL_MOUSEBUTTONDOWN)		{			if (inputEvent.button.button == SDL_BUTTON_LEFT)				mouseButtonDownHandler();		}	} 	handleSlidersHeldDown();	handleRainbowHeldDown();	handleRainbowUpDownButtons();} // macOS/OS X specific routines#ifdef __APPLE__static void osxSetDirToProgramDirFromArgs(char **argv){	char *tmpPath;	int32_t i, tmpPathLen; 	/* OS X/macOS: hackish way of setting the current working directory to the place where we double clicked	** on the icon (for protracker.ini loading) */ 	// if we launched from the terminal, argv[0][0] would be '.'	if (argv[0] != NULL && argv[0][0] == '/') // don't do the hack if we launched from the terminal	{		tmpPath = strdup(argv[0]);		if (tmpPath != NULL)		{			// cut off program filename			tmpPathLen = strlen(tmpPath);			for (i = tmpPathLen-1; i >= 0; i--)			{				if (tmpPath[i] == '/')				{					tmpPath[i] = '\0';					break;				}			} 			chdir(tmpPath); // path to binary			chdir("../../../"); // we should now be in the directory where the config can be. 			free(tmpPath);		}	}}#endif static bool setupVideo(void){	int32_t renderW, renderH; 	/* SDL 2.0.9 for Windows has a serious bug where you need to initialize the joystick subsystem	** (even if you don't use it) or else weird things happen like random stutters, keyboard (rarely) being	** reinitialized in Windows and what not.	** Ref.: https://bugzilla.libsdl.org/show_bug.cgi?id=4391	*/#if defined _WIN32 && SDL_MAJOR_VERSION == 2 && SDL_MINOR_VERSION == 0 && SDL_PATCHLEVEL == 9	if (SDL_Init(SDL_INIT_AUDIO | SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) != 0)#else	if (SDL_Init(SDL_INIT_AUDIO | SDL_INIT_VIDEO) != 0)#endif	{		showErrorMsgBox("Couldn't initialize SDL: %s", SDL_GetError());		return false;	} 	window = SDL_CreateWindow("Palette editor for ProTracker 2 clone",		SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, SCREEN_W * 2, SCREEN_H * 2, SDL_WINDOW_SHOWN | SDL_WINDOW_ALLOW_HIGHDPI); 	if (window == NULL)	{		showErrorMsgBox("Couldn't create SDL window:\n%s", SDL_GetError());		return false;	} 	renderer = SDL_CreateRenderer(window, -1, 0);	if (renderer == NULL)	{		showErrorMsgBox("Couldn't create SDL renderer:\n%s\n\n" \				"Is your GPU (+ driver) too old?", SDL_GetError());		return false;	} 	SDL_RenderSetLogicalSize(renderer, SCREEN_W, SCREEN_H); #if SDL_MINOR_VERSION >= 24 || (SDL_MINOR_VERSION == 0 && SDL_PATCHLEVEL >= 5)	SDL_RenderSetIntegerScale(renderer, SDL_TRUE);	SDL_SetHint(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, "1");#endif 	SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE); 	SDL_SetHint("SDL_RENDER_SCALE_QUALITY", "nearest"); 	texture = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STREAMING, SCREEN_W, SCREEN_H);	if (texture == NULL)	{		showErrorMsgBox("Couldn't create an SDL2 texture: %s", SDL_GetError());		return false;	} 	SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_NONE); 	// frame buffer used by SDL (for texture)	frameBuffer = (uint32_t *)malloc(SCREEN_W * SCREEN_H * sizeof (int32_t));	if (frameBuffer == NULL)	{		showErrorMsgBox("Out of memory!");		return false;	} 	SDL_GetWindowSize(window, &renderW, &renderH);	if (renderW > 0) mouse.fMouseXMul = (float)SCREEN_W / renderW;	if (renderH > 0) mouse.fMouseYMul = (float)SCREEN_H / renderH; 	return true;}