ref: b1e009f93c40ddaf5c9c663b4dfae82b2e90d1d2
dir: /src/ft2_events.c/
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
#include <crtdbg.h>
#endif
#ifdef _WIN32
#define WIN32_MEAN_AND_LEAN
#include <windows.h>
#include <SDL2/SDL_syswm.h>
#else
#include <limits.h>
#include <signal.h>
#include <unistd.h> // chdir()
#endif
#include <stdio.h>
#include <sys/stat.h>
#include "ft2_header.h"
#include "ft2_config.h"
#include "ft2_diskop.h"
#include "ft2_module_loader.h"
#include "ft2_module_saver.h"
#include "ft2_sample_loader.h"
#include "ft2_mouse.h"
#include "ft2_midi.h"
#include "ft2_video.h"
#include "ft2_trim.h"
#include "ft2_inst_ed.h"
#include "ft2_sampling.h"
#include "ft2_textboxes.h"
#include "ft2_sysreqs.h"
#include "ft2_keyboard.h"
#include "ft2_sample_ed.h"
#include "ft2_sample_ed_features.h"
#include "ft2_structs.h"
#define CRASH_TEXT "Oh no! The Fasttracker II clone has crashed...\nA backup .xm was hopefully " \
"saved to the current module directory.\n\nPlease report this bug if you can.\n" \
"Try to mention what you did before the crash happened.\n" \
"My email can be found at the bottom of www.16-bits.org."
static bool backupMadeAfterCrash;
#ifdef _WIN32
#define SYSMSG_FILE_ARG (WM_USER+1)
#define ARGV_SHARED_MEM_MAX_LEN ((PATH_MAX+1) * sizeof (WCHAR))
#define SHARED_HWND_NAME TEXT("Local\\FT2CloneHwnd")
#define SHARED_FILENAME TEXT("Local\\FT2CloneFilename")
static HWND hWnd;
static HANDLE oneInstHandle, hMapFile;
static LPCTSTR sharedMemBuf;
// used for Windows usleep() implementation
static NTSTATUS (__stdcall *NtDelayExecution)(BOOL Alertable, PLARGE_INTEGER DelayInterval);
#endif
static void handleInput(void);
// usleep() implementation for Windows (Warning: This might not be future-safe!)
#ifdef _WIN32
void usleep(uint32_t usec)
{
LARGE_INTEGER lpDueTime;
if (NtDelayExecution == NULL)
{
// NtDelayExecution() is not available (shouldn't happen), use regular sleep()
Sleep(usec / 1000);
}
else
{
// this prevents a 64-bit MUL (will not overflow with the ranges we use anyway)
lpDueTime.HighPart = UINT32_MAX;
lpDueTime.LowPart = (DWORD)(-10 * (int32_t)usec);
NtDelayExecution(false, &lpDueTime);
}
}
void setupWin32Usleep(void)
{
NtDelayExecution = (NTSTATUS (__stdcall *)(BOOL, PLARGE_INTEGER))GetProcAddress(GetModuleHandle("ntdll.dll"), "NtDelayExecution");
timeBeginPeriod(0); // enter highest timer resolution
}
void freeWin32Usleep(void)
{
timeEndPeriod(0); // exit highest timer resolution
}
#endif
void readInput(void)
{
readMouseXY();
readKeyModifiers();
setSyncedReplayerVars();
handleInput();
}
void handleThreadEvents(void)
{
if (okBoxData.active)
{
okBoxData.returnData = okBox(okBoxData.type, okBoxData.headline, okBoxData.text);
okBoxData.active = false;
}
}
void handleEvents(void)
{
#ifdef HAS_MIDI
// called after MIDI has been initialized
if (midi.rescanDevicesFlag)
{
midi.rescanDevicesFlag = false;
rescanMidiInputDevices();
if (ui.configScreenShown && editor.currConfigScreen == CONFIG_SCREEN_MIDI_INPUT)
drawMidiInputList();
}
#endif
if (editor.trimThreadWasDone)
{
editor.trimThreadWasDone = false;
trimThreadDone();
}
if (editor.updateCurSmp)
{
editor.updateCurSmp = false;
updateNewInstrument();
updateNewSample();
diskOpSetFilename(DISKOP_ITEM_SAMPLE, editor.tmpFilenameU);
removeSampleIsLoadingFlag();
setMouseBusy(false);
}
if (editor.updateCurInstr)
{
editor.updateCurInstr = false;
updateNewInstrument();
updateNewSample();
diskOpSetFilename(DISKOP_ITEM_INSTR, editor.tmpInstrFilenameU);
setMouseBusy(false);
}
// some Disk Op. stuff
if (editor.diskOpReadDir)
{
editor.diskOpReadDir = false;
diskOp_StartDirReadThread();
}
if (editor.diskOpReadDone)
{
editor.diskOpReadDone = false;
if (ui.diskOpShown)
diskOp_DrawDirectory();
}
handleLoadMusicEvents();
if (editor.samplingAudioFlag) handleSamplingUpdates();
if (ui.setMouseBusy) mouseAnimOn();
if (ui.setMouseIdle) mouseAnimOff();
if (editor.updateWindowTitle)
{
editor.updateWindowTitle = false;
updateWindowTitle(false);
}
}
// Windows specific routines
#ifdef _WIN32
static bool instanceAlreadyOpen(void)
{
hMapFile = OpenFileMapping(FILE_MAP_ALL_ACCESS, FALSE, SHARED_HWND_NAME);
if (hMapFile != NULL)
return true; // another instance is already open
// no instance is open, let's created a shared memory file with hWnd in it
oneInstHandle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, sizeof (HWND), SHARED_HWND_NAME);
if (oneInstHandle != NULL)
{
sharedMemBuf = (LPTSTR)MapViewOfFile(oneInstHandle, FILE_MAP_ALL_ACCESS, 0, 0, sizeof (HWND));
if (sharedMemBuf != NULL)
{
CopyMemory((PVOID)sharedMemBuf, &video.hWnd, sizeof (HWND));
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
}
}
return false;
}
bool handleSingleInstancing(int32_t argc, char **argv)
{
SDL_SysWMinfo wmInfo;
SDL_VERSION(&wmInfo.version);
if (!SDL_GetWindowWMInfo(video.window, &wmInfo))
return false;
video.hWnd = wmInfo.info.win.window;
if (instanceAlreadyOpen() && argc >= 2 && argv[1][0] != '\0')
{
sharedMemBuf = (LPTSTR)MapViewOfFile(hMapFile, FILE_MAP_ALL_ACCESS, 0, 0, sizeof (HWND));
if (sharedMemBuf != NULL)
{
memcpy(&hWnd, sharedMemBuf, sizeof (HWND));
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
CloseHandle(hMapFile);
hMapFile = NULL;
hMapFile = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, ARGV_SHARED_MEM_MAX_LEN, SHARED_FILENAME);
if (hMapFile != NULL)
{
sharedMemBuf = (LPTSTR)MapViewOfFile(hMapFile, FILE_MAP_ALL_ACCESS, 0, 0, ARGV_SHARED_MEM_MAX_LEN);
if (sharedMemBuf != NULL)
{
strcpy((char *)sharedMemBuf, argv[1]);
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
SendMessage(hWnd, SYSMSG_FILE_ARG, 0, 0);
Sleep(80); // wait a bit to make sure first instance received msg
CloseHandle(hMapFile);
hMapFile = NULL;
return true; // quit instance now
}
}
return true;
}
CloseHandle(hMapFile);
hMapFile = NULL;
}
SDL_EventState(SDL_SYSWMEVENT, SDL_ENABLE);
return false;
}
static void handleSysMsg(SDL_Event inputEvent)
{
if (inputEvent.type != SDL_SYSWMEVENT)
return;
SDL_SysWMmsg *wmMsg = inputEvent.syswm.msg;
if (wmMsg->subsystem == SDL_SYSWM_WINDOWS && wmMsg->msg.win.msg == SYSMSG_FILE_ARG)
{
hMapFile = OpenFileMapping(FILE_MAP_READ, FALSE, SHARED_FILENAME);
if (hMapFile != NULL)
{
sharedMemBuf = (LPTSTR)MapViewOfFile(hMapFile, FILE_MAP_READ, 0, 0, ARGV_SHARED_MEM_MAX_LEN);
if (sharedMemBuf != NULL)
{
editor.autoPlayOnDrop = true;
loadDroppedFile((char *)sharedMemBuf, true);
UnmapViewOfFile(sharedMemBuf);
sharedMemBuf = NULL;
}
CloseHandle(hMapFile);
hMapFile = NULL;
}
}
}
void closeSingleInstancing(void)
{
if (oneInstHandle != NULL)
{
CloseHandle(oneInstHandle);
oneInstHandle = NULL;
}
}
static LONG WINAPI exceptionHandler(EXCEPTION_POINTERS *ptr)
{
#define BACKUP_FILES_TO_TRY 1000
char fileName[32];
struct stat statBuffer;
if (oneInstHandle != NULL)
CloseHandle(oneInstHandle);
if (!backupMadeAfterCrash)
{
if (getDiskOpModPath() != NULL && UNICHAR_CHDIR(getDiskOpModPath()) == 0)
{
// find a free filename
int32_t i;
for (i = 1; i < BACKUP_FILES_TO_TRY; i++)
{
sprintf(fileName, "backup%03d.xm", (int32_t)i);
if (stat(fileName, &statBuffer) != 0)
break; // filename OK
}
if (i != BACKUP_FILES_TO_TRY)
{
UNICHAR *fileNameU = cp437ToUnichar(fileName);
if (fileNameU != NULL)
{
saveXM(fileNameU);
free(fileNameU);
}
}
}
backupMadeAfterCrash = true; // set this flag to prevent multiple backups from being saved at once
showErrorMsgBox(CRASH_TEXT);
}
return EXCEPTION_CONTINUE_SEARCH;
(void)ptr;
}
#else
static void exceptionHandler(int32_t signal)
{
#define BACKUP_FILES_TO_TRY 1000
char fileName[32];
struct stat statBuffer;
if (signal == 15)
return;
if (!backupMadeAfterCrash)
{
if (getDiskOpModPath() != NULL && UNICHAR_CHDIR(getDiskOpModPath()) == 0)
{
// find a free filename
int32_t i;
for (i = 1; i < BACKUP_FILES_TO_TRY; i++)
{
sprintf(fileName, "backup%03d.xm", i);
if (stat(fileName, &statBuffer) != 0)
break; // filename OK
}
if (i != BACKUP_FILES_TO_TRY)
{
UNICHAR *fileNameU = cp437ToUnichar(fileName);
if (fileNameU != NULL)
{
saveXM(fileNameU);
free(fileNameU);
}
}
}
backupMadeAfterCrash = true; // set this flag to prevent multiple backups from being saved at once
showErrorMsgBox(CRASH_TEXT);
}
}
#endif
void setupCrashHandler(void)
{
#ifndef _DEBUG
#ifdef _WIN32
SetUnhandledExceptionFilter(exceptionHandler);
#else
struct sigaction act;
struct sigaction oldAct;
memset(&act, 0, sizeof (act));
act.sa_handler = exceptionHandler;
act.sa_flags = SA_RESETHAND;
sigaction(SIGILL | SIGABRT | SIGFPE | SIGSEGV, &act, &oldAct);
sigaction(SIGILL, &act, &oldAct);
sigaction(SIGABRT, &act, &oldAct);
sigaction(SIGFPE, &act, &oldAct);
sigaction(SIGSEGV, &act, &oldAct);
#endif
#endif
}
void handleWaitVblQuirk(SDL_Event *event)
{
if (event->type == SDL_WINDOWEVENT)
{
if (event->window.event == SDL_WINDOWEVENT_HIDDEN)
video.windowHidden = true;
else if (event->window.event == SDL_WINDOWEVENT_SHOWN)
video.windowHidden = false;
if (video.vsync60HzPresent)
{
/* If we minimize the window and vsync is present, vsync is temporarily turned off.
** recalc waitVBL() vars so that it can sleep properly in said mode.
*/
if (event->window.event == SDL_WINDOWEVENT_MINIMIZED ||
event->window.event == SDL_WINDOWEVENT_FOCUS_LOST)
{
setupWaitVBL();
}
}
}
}
static void handleInput(void)
{
SDL_Event event;
if (!editor.busy)
handleLastGUIObjectDown(); // this should be handled before main input poll (on next frame)
while (SDL_PollEvent(&event))
{
handleWaitVblQuirk(&event);
if (editor.busy)
{
const uint32_t eventType = event.type;
const SDL_Scancode key = event.key.keysym.scancode;
/* The Echo tool in Smp. Ed. can take forever if abused, let
** mouse buttons/ESC/SIGTERM force-stop it.
*/
if (eventType == SDL_MOUSEBUTTONDOWN || eventType == SDL_QUIT ||
(eventType == SDL_KEYUP && key == SDL_SCANCODE_ESCAPE))
{
handleEchoToolPanic();
}
// let certain mouse buttons or keyboard keys stop certain events
if (eventType == SDL_MOUSEBUTTONDOWN ||
(eventType == SDL_KEYDOWN && key != SDL_SCANCODE_MUTE &&
key != SDL_SCANCODE_AUDIOMUTE && key != SDL_SCANCODE_VOLUMEDOWN &&
key != SDL_SCANCODE_VOLUMEUP))
{
// only let keyboard keys interrupt audio sampling
if (editor.samplingAudioFlag && eventType != SDL_MOUSEBUTTONDOWN)
stopSampling();
editor.wavIsRendering = false;
}
continue; // another thread is busy with something, drop input
}
#ifdef _WIN32
handleSysMsg(event);
#endif
// text input when editing texts
if (event.type == SDL_TEXTINPUT)
{
if (editor.editTextFlag)
{
if (keyb.ignoreTextEditKey)
{
keyb.ignoreTextEditKey = false;
continue;
}
char *inputText = utf8ToCp437(event.text.text, false);
if (inputText != NULL)
{
if (inputText[0] != '\0')
handleTextEditInputChar(inputText[0]);
free(inputText);
}
}
}
else if (event.type == SDL_MOUSEWHEEL)
{
if (event.wheel.y > 0)
mouseWheelHandler(MOUSE_WHEEL_UP);
else if (event.wheel.y < 0)
mouseWheelHandler(MOUSE_WHEEL_DOWN);
}
else if (event.type == SDL_DROPFILE)
{
editor.autoPlayOnDrop = false;
loadDroppedFile(event.drop.file, true);
SDL_free(event.drop.file);
}
else if (event.type == SDL_QUIT)
{
if (ui.sysReqShown)
continue;
if (editor.editTextFlag)
exitTextEditing();
if (!song.isModified)
{
editor.throwExit = true;
}
else
{
if (!video.fullscreen)
{
// de-minimize window and set focus so that the user sees the message box
SDL_RestoreWindow(video.window);
SDL_RaiseWindow(video.window);
}
if (quitBox(true) == 1)
editor.throwExit = true;
}
}
else if (event.type == SDL_KEYUP)
{
keyUpHandler(event.key.keysym.scancode, event.key.keysym.sym);
}
else if (event.type == SDL_KEYDOWN)
{
keyDownHandler(event.key.keysym.scancode, event.key.keysym.sym, event.key.repeat);
}
else if (event.type == SDL_MOUSEBUTTONUP)
{
mouseButtonUpHandler(event.button.button);
}
else if (event.type == SDL_MOUSEBUTTONDOWN)
{
mouseButtonDownHandler(event.button.button);
}
if (editor.throwExit)
editor.programRunning = false;
}
#ifdef HAS_MIDI
// MIDI vibrato
const uint8_t vibDepth = (midi.currMIDIVibDepth >> 9) & 0x0F;
if (vibDepth > 0)
recordMIDIEffect(0x04, 0xA0 | vibDepth);
#endif
}