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// This file is part of Golly.
// See docs/License.html for the copyright notice.
// gollybase
#include "bigint.h"
#include "lifealgo.h"
#include "qlifealgo.h"
#include "hlifealgo.h"
#include "generationsalgo.h"
#include "ltlalgo.h"
#include "jvnalgo.h"
#include "ruleloaderalgo.h"
// gui-common
#include "algos.h" // for InitAlgorithms, NumAlgos, etc
#include "prefs.h" // for GetPrefs, MAX_MAG, tempdir, etc
#include "layer.h" // for ResizeLayers, currlayer
#include "control.h" // for SetMinimumStepExponent, NextGeneration, etc
#include "file.h" // for NewPattern
#include "view.h" // for fullscreen, TouchBegan, etc
#include "status.h" // for SetMessage, CheckMouseLocation, etc
#include "utils.h" // for Beep, etc
#include "undo.h" // for currlayer->undoredo->...
#include "render.h" // for InitOGLES2, DrawPattern
#include "webcalls.h" // for refresh_pattern, UpdateStatus, PatternSaved, etc
#include <stdlib.h>
#include <stdio.h>
#include <GL/glfw.h>
#include <emscripten/emscripten.h>
// -----------------------------------------------------------------------------
// the following JavaScript functions are implemented in jslib.js:
extern "C" {
extern void jsSetMode(int index);
extern const char* jsSetRule(const char* oldrule);
extern void jsShowMenu(const char* id, int x, int y);
extern int jsTextAreaIsActive();
extern int jsElementIsVisible(const char* id);
extern void jsEnableImgButton(const char* id, bool enable);
extern void jsTickMenuItem(const char* id, bool tick);
extern void jsSetInputValue(const char* id, int num);
extern int jsGetInputValue(const char* id);
extern void jsSetCheckBox(const char* id, bool flag);
extern bool jsGetCheckBox(const char* id);
extern void jsSetInnerHTML(const char* id, const char* text);
extern void jsShowSaveDialog(const char* filename, const char* extensions);
extern void jsSaveFile(const char* filename);
}
// -----------------------------------------------------------------------------
static int currwd, currht; // current size of viewport (in pixels)
static double last_time; // time when NextGeneration was last called
static bool alt_down = false; // alt/option key is currently pressed?
static bool ctrl_down = false; // ctrl key is currently pressed?
static bool shift_down = false; // shift key is currently pressed?
static bool meta_down = false; // cmd/start/menu key is currently pressed?
static bool ok_to_check_mouse = false; // ok to call glfwGetMousePos?
static bool mouse_down = false; // is mouse button down?
static bool over_canvas = false; // is mouse over canvas?
static bool over_paste = false; // is mouse over paste image?
static bool paste_menu_visible = false;
static bool selection_menu_visible = false;
// -----------------------------------------------------------------------------
static void InitPaths()
{
userdir = ""; // webGolly doesn't use this
// webGolly doesn't use savedir (jsSaveFile will download saved files to the user's computer
// in a directory specified by the browser)
savedir = "";
// webGolly doesn't need to set downloaddir (browser will cache downloaded files)
downloaddir = "";
// create a directory for user's rules
EM_ASM( FS.mkdir('/LocalRules'); );
userrules = "/LocalRules/"; // WARNING: GetLocalPrefs() assumes this string
// !!! we'll need to provide a way for users to delete .rule files in localStorage
// to avoid exceeding the localStorage disk quota (implement special "DELETE" links
// in Set Rule dialog, like we do in iGolly and aGolly)
// supplied patterns, rules, help are stored in golly.data via --preload-file option in Makefile
supplieddir = "/";
patternsdir = supplieddir + "Patterns/";
rulesdir = supplieddir + "Rules/";
helpdir = supplieddir + "Help/";
// create a directory for all our temporary files (can't use /tmp as it already exists!)
EM_ASM( FS.mkdir('/gollytmp'); );
tempdir = "/gollytmp/";
clipfile = tempdir + "golly_clipboard";
// WARNING: GetLocalPrefs() and SaveLocalPrefs() assume the user's preferences are
// temporarily stored in a file with this name
prefsfile = "GollyPrefs";
}
// -----------------------------------------------------------------------------
static void GetLocalPrefs()
{
EM_ASM(
// get GollyPrefs string from local storage (key name must match setItem call)
var contents = localStorage.getItem('GollyPrefs');
if (contents) {
// write contents to virtual file system so GetPrefs() can read it
// and initialize various global settings
FS.writeFile('GollyPrefs', contents, {encoding:'utf8'});
}
);
GetPrefs(); // read prefsfile from virtual file system
EM_ASM(
// re-create any .rule files that were saved in localStorage
for (var i=0; i<localStorage.length; i++) {
var key = localStorage.key(i);
if (key.substr(0,12) == '/LocalRules/') {
// key is full path name (eg. /LocalRules/Foo.rule)
var contents = localStorage.getItem(key);
if (contents) FS.writeFile(key, contents, {encoding:'utf8'});
}
}
);
}
// -----------------------------------------------------------------------------
extern "C" {
void SaveLocalPrefs()
{
SavePrefs(); // write prefsfile to virtual file system
EM_ASM(
// read contents of prefsfile just written
var contents = FS.readFile('GollyPrefs', {encoding:'utf8'});
// save contents to local storage (key name must match getItem call)
localStorage.setItem('GollyPrefs', contents);
);
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
bool UnsavedChanges()
{
return (currlayer && currlayer->dirty && asktosave);
}
} // extern "C"
// -----------------------------------------------------------------------------
static void InitEventHandlers()
{
EM_ASM(
// the following code fixes bugs in emscripten/src/library_glfw.js:
// - onMouseWheel fails to use wheelDelta
// - the onmousewheel handler is assigned to the entire window rather than just the canvas
var wheelpos = 0;
function on_mouse_wheel(event) {
// Firefox sets event.detail, other browsers set event.wheelDelta with opposite sign,
// so set delta to a value between -1 and 1
var delta = Math.max(-1, Math.min(1, (event.detail || -event.wheelDelta)));
wheelpos += delta;
_OnMouseWheel(wheelpos);
return false;
};
// for Firefox:
Module['canvas'].addEventListener('DOMMouseScroll', on_mouse_wheel, false);
// for Chrome, Safari, etc:
Module['canvas'].onmousewheel = on_mouse_wheel;
);
EM_ASM(
// we do our own keyboard event handling because glfw's onKeyChanged always calls
// event.preventDefault() so browser shortcuts like ctrl-Q/X/C/V don't work and
// text can't be typed into our clipboard textarea
function on_key_changed(event, status) {
var key = event.keyCode;
// DEBUG: Module.printErr('keycode='+key+' status='+status);
// DEBUG: Module.printErr('activeElement='+document.activeElement.tagName);
var prevent = _OnKeyChanged(key, status);
// we allow default handler in these 2 cases:
// 1. if ctrl/meta key is down (allows cmd/ctrl-Q/X/C/V/A/etc to work)
// 2. if a textarea is active (document.activeElement.tagName == 'TEXTAREA')
// on Firefox it seems we NEED to call preventDefault to stop cursor disappearing,
// but on Safari/Chrome if we call it then cursor disappears (and arrow keys ALWAYS
// cause disappearance regardless of whether we call it or not)... sheesh!!!
if (prevent) {
event.preventDefault();
return false;
}
};
function on_key_down(event) {
on_key_changed(event, 1); // GLFW_PRESS
};
function on_key_up(event) {
on_key_changed(event, 0); // GLFW_RELEASE
};
window.addEventListener('keydown', on_key_down, false);
window.addEventListener('keyup', on_key_up, false);
);
EM_ASM(
// detect exit from full screen mode
document.addEventListener('fullscreenchange', function() {
if (!document.fullscreenElement) _ExitFullScreen();
}, false);
document.addEventListener('msfullscreenchange', function() {
if (!document.msFullscreenElement) _ExitFullScreen();
}, false);
document.addEventListener('mozfullscreenchange', function() {
if (!document.mozFullScreen) _ExitFullScreen();
}, false);
document.addEventListener('webkitfullscreenchange', function() {
if (!document.webkitIsFullScreen) _ExitFullScreen();
}, false);
);
EM_ASM(
// give user the option to save any changes
window.onbeforeunload = function() {
if (_UnsavedChanges()) return 'You have unsaved changes.';
};
// save current settings when window is unloaded
window.addEventListener('unload', function() {
_SaveLocalPrefs();
});
);
}
// -----------------------------------------------------------------------------
static int InitGL()
{
if (glfwInit() != GL_TRUE) {
Warning("glfwInit failed!");
return GL_FALSE;
}
InitEventHandlers();
// initial size doesn't matter -- ResizeCanvas will soon change it
if (glfwOpenWindow(100, 100, 8, 8, 8, 8, 0, 0, GLFW_WINDOW) != GL_TRUE) {
Warning("glfwOpenWindow failed!");
return GL_FALSE;
}
glfwSetWindowTitle("Golly");
if (!InitOGLES2()) {
Warning("InitOGLES2 failed!");
return GL_FALSE;
}
// we only do 2D drawing
glDisable(GL_DEPTH_TEST);
glDisable(GL_DITHER);
glDisable(GL_STENCIL_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClearColor(1.0, 1.0, 1.0, 1.0);
last_time = glfwGetTime();
return GL_TRUE;
}
// -----------------------------------------------------------------------------
// many of the following routines are declared as C functions to avoid
// C++ name mangling and make it easy to call them from JavaScript code
// (the routine names, along with a leading underscore, must be listed in
// -s EXPORTED_FUNCTIONS in Makefile)
extern "C" {
void ResizeCanvas() {
// resize canvas based on current window dimensions and fullscreen flag
if (fullscreen) {
EM_ASM(
var wd = window.innerWidth;
var ht = window.innerHeight;
var canvas = Module['canvas'];
canvas.style.top = '0px';
canvas.style.left = '0px';
canvas.style.width = wd + 'px';
canvas.style.height = ht + 'px';
canvas.width = wd;
canvas.height = ht;
_SetViewport(wd, ht); // call C routine (see below)
);
} else {
EM_ASM(
var trect = document.getElementById('toolbar').getBoundingClientRect();
// place canvas immediately under toolbar
var top = trect.top + trect.height;
var left = trect.left;
var wd = window.innerWidth - left - 10;
var ht = window.innerHeight - top - 10;
if (wd < 0) wd = 0;
if (ht < 0) ht = 0;
var canvas = Module['canvas'];
canvas.style.top = top + 'px';
canvas.style.left = left + 'px';
canvas.style.width = wd + 'px';
canvas.style.height = ht + 'px';
canvas.width = wd;
canvas.height = ht;
_SetViewport(wd, ht); // call C routine (see below)
);
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void SetViewport(int width, int height)
{
// do NOT call glfwSetWindowSize as it cancels full screen mode
// glfwSetWindowSize(width, height);
// ResizeCanvas has changed canvas size so we need to change OpenGL's viewport size
glViewport(0, 0, width, height);
currwd = width;
currht = height;
if (currwd != currlayer->view->getwidth() ||
currht != currlayer->view->getheight()) {
// also change size of Golly's viewport
ResizeLayers(currwd, currht);
// to avoid seeing lots of black, draw now rather than call UpdatePattern
DrawPattern(currindex);
}
}
} // extern "C"
// -----------------------------------------------------------------------------
static void InitClipboard()
{
// initialize clipboard data to a simple RLE pattern
EM_ASM(
document.getElementById('cliptext').value =
'# To open the following RLE pattern,\n'+
'# select File > Open Clipboard.\n' +
'# Or to paste in the pattern, click on\n'+
'# the Paste button, drag the floating\n' +
'# image to the desired location, then\n' +
'# right-click on the image.\n' +
'x = 9, y = 5, rule = B3/S23\n' +
'$bo3b3o$b3o2bo$2bo!';
);
}
// -----------------------------------------------------------------------------
static void UpdateCursorImage()
{
// note that the 2 numbers after the cursor url are the x and y offsets of the
// cursor's hotspot relative to the top left corner
if (over_paste) {
// user can drag paste image so show hand cursor
EM_ASM( Module['canvas'].style.cursor = 'url(images/cursor_move.png) 7 7, auto'; );
return;
}
if (!currlayer) return; // in case this routine is called very early
if (currlayer->touchmode == drawmode) {
EM_ASM( Module['canvas'].style.cursor = 'url(images/cursor_draw.png) 4 15, auto'; );
} else if (currlayer->touchmode == pickmode) {
EM_ASM( Module['canvas'].style.cursor = 'url(images/cursor_pick.png) 0 15, auto'; );
} else if (currlayer->touchmode == selectmode) {
EM_ASM( Module['canvas'].style.cursor = 'crosshair'; ); // all browsers support this???
} else if (currlayer->touchmode == movemode) {
EM_ASM( Module['canvas'].style.cursor = 'url(images/cursor_move.png) 7 7, auto'; );
} else if (currlayer->touchmode == zoominmode) {
EM_ASM( Module['canvas'].style.cursor = 'url(images/cursor_zoomin.png) 6 6, auto'; );
} else if (currlayer->touchmode == zoomoutmode) {
EM_ASM( Module['canvas'].style.cursor = 'url(images/cursor_zoomout.png) 6 6, auto'; );
} else {
Warning("Bug detected in UpdateCursorImage!");
}
}
// -----------------------------------------------------------------------------
static void CheckCursor(int x, int y)
{
if (mouse_down) {
// don't check for cursor change if mouse button is pressed
// (eg. we don't want cursor to change if user drags pencil/crosshair
// cursor over the paste image)
} else if (waitingforpaste && PointInPasteImage(x, y) && !over_paste) {
// change cursor to hand to indicate that paste image can be dragged
over_paste = true;
UpdateCursorImage();
} else if (over_paste && (!waitingforpaste || !PointInPasteImage(x, y))) {
// change cursor from hand to match currlayer->touchmode
over_paste = false;
UpdateCursorImage();
}
}
// -----------------------------------------------------------------------------
static void StopIfGenerating()
{
if (generating) {
StopGenerating();
// generating flag is now false so change button image
EM_ASM( document.getElementById('imgstartStop').src = 'images/start.png'; );
}
}
// -----------------------------------------------------------------------------
extern "C" {
void NewUniverse()
{
// undo/redo history is about to be cleared so no point calling RememberGenFinish
// if we're generating a (possibly large) pattern
bool saveundo = allowundo;
allowundo = false;
StopIfGenerating();
allowundo = saveundo;
if (event_checker > 0) {
// try again after a short delay
EM_ASM( window.setTimeout('_NewUniverse()', 10); );
return;
}
NewPattern();
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
static void Open()
{
StopIfGenerating();
// display the open file dialog and start listening for change to selected file
// (the on_file_change function is in shell.html)
EM_ASM(
document.getElementById('open_overlay').style.visibility = 'visible';
document.getElementById('upload_file').addEventListener('change', on_file_change, false);
);
}
// -----------------------------------------------------------------------------
extern "C" {
void CancelOpen()
{
// close the open file dialog and remove the change event handler
EM_ASM(
document.getElementById('open_overlay').style.visibility = 'hidden';
document.getElementById('upload_file').removeEventListener('change', on_file_change, false);
);
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void OpenClipboard()
{
StopIfGenerating();
if (event_checker > 0) {
// try again after a short delay
EM_ASM( window.setTimeout('_OpenClipboard()', 10); );
return;
}
// if clipboard text starts with "@RULE rulename" then install rulename.rule and switch to that rule
if (ClipboardContainsRule()) return;
// load and view pattern data stored in clipboard
std::string data;
if (GetTextFromClipboard(data)) {
// copy clipboard data to tempstart so we can handle all formats supported by readpattern
FILE* outfile = fopen(currlayer->tempstart.c_str(), "w");
if (outfile) {
if (fputs(data.c_str(), outfile) == EOF) {
ErrorMessage("Could not write clipboard text to tempstart file!");
fclose(outfile);
return;
}
} else {
ErrorMessage("Could not open tempstart file for writing!");
fclose(outfile);
return;
}
fclose(outfile);
LoadPattern(currlayer->tempstart.c_str(), "clipboard");
}
}
} // extern "C"
// -----------------------------------------------------------------------------
static void Save()
{
StopIfGenerating();
// display the save pattern dialog
if (currlayer->algo->hyperCapable()) {
jsShowSaveDialog(currlayer->currname.c_str(), ".mc (default), .mc.gz, .rle, .rle.gz");
} else {
jsShowSaveDialog(currlayer->currname.c_str(), ".rle (default), .rle.gz");
}
}
// -----------------------------------------------------------------------------
extern "C" {
void CancelSave()
{
// close the save pattern dialog
EM_ASM( document.getElementById('save_overlay').style.visibility = 'hidden'; );
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void SaveFile(const char* filename)
{
std::string fname = filename;
// PatternSaved will append default extension if not supplied
if (PatternSaved(fname)) {
CancelSave(); // close dialog
UpdateStatus();
// fname successfully created, so download it to user's computer
jsSaveFile(fname.c_str());
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void StartStop()
{
if (generating) {
StopGenerating();
// generating flag is now false so change button image
EM_ASM( document.getElementById('imgstartStop').src = 'images/start.png'; );
// don't call UpdateButtons here because if event_checker is > 0
// then StopGenerating hasn't called RememberGenFinish, and so CanUndo/CanRedo
// might not return correct results
bool canreset = currlayer->algo->getGeneration() > currlayer->startgen;
jsEnableImgButton("reset", canreset);
jsEnableImgButton("undo", allowundo && (canreset || currlayer->undoredo->CanUndo()));
jsEnableImgButton("redo", false);
} else if (StartGenerating()) {
// generating flag is now true so change button image
EM_ASM( document.getElementById('imgstartStop').src = 'images/stop.png'; );
// don't call UpdateButtons here because we want user to
// be able to stop generating by hitting reset/undo buttons
jsEnableImgButton("reset", true);
jsEnableImgButton("undo", allowundo);
jsEnableImgButton("redo", false);
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void Next()
{
StopIfGenerating();
if (event_checker > 0) {
// previous NextGeneration() hasn't finished so try again after a short delay
EM_ASM( window.setTimeout('_Next()', 10); );
return;
}
NextGeneration(false); // advance by 1
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void Step()
{
StopIfGenerating();
if (event_checker > 0) {
// previous NextGeneration() hasn't finished so try again after a short delay
EM_ASM( window.setTimeout('_Step()', 10); );
return;
}
NextGeneration(true); // advance by current step size
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void GoSlower()
{
if (currlayer->currexpo > minexpo) {
currlayer->currexpo--;
SetGenIncrement();
UpdateStatus();
} else {
Beep();
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void GoFaster()
{
currlayer->currexpo++;
SetGenIncrement();
UpdateStatus();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void StepBy1()
{
// reset step exponent to 0
currlayer->currexpo = 0;
SetGenIncrement();
UpdateStatus();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void Reset()
{
if (currlayer->algo->getGeneration() == currlayer->startgen) return;
StopIfGenerating();
if (event_checker > 0) {
// try again after a short delay
EM_ASM( window.setTimeout('_Reset()', 10); );
return;
}
ResetPattern();
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void Fit()
{
// no need to call TestAutoFit()
FitInView(1);
UpdatePatternAndStatus();
}
} // extern "C"
// -----------------------------------------------------------------------------
void Middle()
{
TestAutoFit();
if (currlayer->originx == bigint::zero && currlayer->originy == bigint::zero) {
currlayer->view->center();
} else {
// put cell saved by ChangeOrigin (not yet implemented!!!) in middle
currlayer->view->setpositionmag(currlayer->originx, currlayer->originy, currlayer->view->getmag());
}
UpdateEverything();
}
// -----------------------------------------------------------------------------
extern "C" {
void ZoomOut()
{
TestAutoFit();
currlayer->view->unzoom();
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void ZoomIn()
{
if (currlayer->view->getmag() < MAX_MAG) {
TestAutoFit();
currlayer->view->zoom();
UpdateEverything();
} else {
Beep();
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void Scale1to1()
{
if (currlayer->view->getmag() != 0) {
TestAutoFit();
currlayer->view->setmag(0);
UpdateEverything();
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void FullScreen()
{
fullscreen = true;
EM_ASM(
var canvas = Module['canvas'];
if (canvas.requestFullscreen) {
canvas.requestFullscreen();
} else if (canvas.msRequestFullscreen) {
canvas.msRequestFullscreen();
} else if (canvas.mozRequestFullScreen) {
canvas.mozRequestFullScreen();
} else if (canvas.webkitRequestFullScreen) {
canvas.webkitRequestFullScreen();
// following only works on Chrome??? (but prevents Safari going full screen!!!)
// canvas.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
}
);
// no need to call ResizeCanvas here (the resize event handler calls it)
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void ExitFullScreen()
{
fullscreen = false;
ResizeCanvas();
}
} // extern "C"
// -----------------------------------------------------------------------------
static void SetScale(int mag)
{
if (currlayer->view->getmag() != mag) {
TestAutoFit();
currlayer->view->setmag(mag);
UpdateEverything();
}
}
// -----------------------------------------------------------------------------
extern "C" {
void Info()
{
if (currlayer->currname != "untitled") {
// display comments in current pattern file
char *commptr = NULL;
// readcomments will allocate commptr
const char *err = readcomments(currlayer->currfile.c_str(), &commptr);
if (err) {
if (commptr) free(commptr);
ErrorMessage(err);
return;
}
const char* commfile = "comments";
FILE* outfile = fopen(commfile, "w");
if (outfile) {
int result;
if (commptr[0] == 0) {
result = fputs("No comments found.", outfile);
} else {
result = fputs(commptr, outfile);
}
if (result == EOF) {
ErrorMessage("Could not write comments to file!");
fclose(outfile);
return;
}
} else {
ErrorMessage("Could not open file for comments!");
fclose(outfile);
return;
}
fclose(outfile);
if (commptr) free(commptr);
ShowTextFile(commfile);
}
}
} // extern "C"
// -----------------------------------------------------------------------------
void StopAndHelp(const char* helpfile)
{
StopIfGenerating();
ShowHelp(helpfile);
}
// -----------------------------------------------------------------------------
extern "C" {
void Help()
{
// show most recently loaded help file (or contents page if no such file)
StopAndHelp("");
}
} // extern "C"
// -----------------------------------------------------------------------------
static void OpenPrefs()
{
// show a modal dialog that lets user change various settings
EM_ASM( document.getElementById('prefs_overlay').style.visibility = 'visible'; );
// show current settings
jsSetInputValue("random_fill", randomfill);
jsSetInputValue("max_hash", maxhashmem);
jsSetCheckBox("ask_to_save", asktosave);
jsSetCheckBox("toggle_beep", allowbeep);
// select random fill percentage (the most likely setting to change)
EM_ASM(
var randfill = document.getElementById('random_fill');
randfill.select();
randfill.focus();
);
}
// -----------------------------------------------------------------------------
extern "C" {
void CancelPrefs()
{
// ignore any changes to the current settings and close the prefs dialog
EM_ASM( document.getElementById('prefs_overlay').style.visibility = 'hidden'; );
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void StorePrefs()
{
// get and validate settings
int newrandfill = jsGetInputValue("random_fill");
if (newrandfill < 1 || newrandfill > 100) {
Warning("Random fill percentage must be an integer from 1 to 100.");
return;
}
int newmaxhash = jsGetInputValue("max_hash");
if (newmaxhash < MIN_MEM_MB || newmaxhash > MAX_MEM_MB) {
char msg[128];
sprintf(msg, "Maximum hash memory must be an integer from %d to %d.", MIN_MEM_MB, MAX_MEM_MB);
Warning(msg);
return;
}
// all settings are valid
randomfill = newrandfill;
if (maxhashmem != newmaxhash) {
// need to call setMaxMemory if maxhashmem changed
maxhashmem = newmaxhash;
for (int i = 0; i < numlayers; i++) {
Layer* layer = GetLayer(i);
if (algoinfo[layer->algtype]->canhash) {
layer->algo->setMaxMemory(maxhashmem);
}
// non-hashing algos (QuickLife) use their default memory setting
}
}
asktosave = jsGetCheckBox("ask_to_save");
allowbeep = jsGetCheckBox("toggle_beep");
CancelPrefs(); // close the prefs dialog
SaveLocalPrefs(); // remember settings in local storage
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void Paste()
{
StopIfGenerating();
if (event_checker > 0) {
// try again after a short delay
EM_ASM( window.setTimeout('_Paste()', 10); );
return;
}
// remove any existing paste image
if (waitingforpaste) AbortPaste();
PasteClipboard();
UpdatePatternAndStatus();
}
} // extern "C"
// -----------------------------------------------------------------------------
static void CancelPaste()
{
if (waitingforpaste) {
AbortPaste();
UpdatePattern();
}
}
// -----------------------------------------------------------------------------
extern "C" {
void Undo()
{
StopIfGenerating();
if (event_checker > 0) {
// try again after a short delay
EM_ASM( window.setTimeout('_Undo()', 10); );
return;
}
currlayer->undoredo->UndoChange();
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void Redo()
{
StopIfGenerating();
if (event_checker > 0) {
// try again after a short delay
EM_ASM( window.setTimeout('_Redo()', 10); );
return;
}
currlayer->undoredo->RedoChange();
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void ToggleIcons()
{
showicons = !showicons;
UpdateEditBar(); // updates check box
UpdatePattern();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void ToggleAutoFit()
{
currlayer->autofit = !currlayer->autofit;
UpdateEditBar(); // updates check box
// we only use autofit when generating
if (generating && currlayer->autofit) {
FitInView(0);
UpdateEverything();
}
}
} // extern "C"
// -----------------------------------------------------------------------------
static void ToggleGrid()
{
showgridlines = !showgridlines;
UpdatePattern();
}
// -----------------------------------------------------------------------------
static void ToggleHashInfo()
{
currlayer->showhashinfo = !currlayer->showhashinfo;
// only show hashing info while generating
if (generating) lifealgo::setVerbose( currlayer->showhashinfo );
}
// -----------------------------------------------------------------------------
static void ToggleTiming()
{
showtiming = !showtiming;
}
// -----------------------------------------------------------------------------
static void SetAlgo(int index)
{
if (index >= 0 && index < NumAlgos()) {
if (index != currlayer->algtype) ChangeAlgorithm(index, currlayer->algo->getrule());
} else {
Warning("Bug detected in SetAlgo!");
}
}
// -----------------------------------------------------------------------------
extern "C" {
void ModeChanged(int index)
{
switch (index) {
case 0: currlayer->touchmode = drawmode; break;
case 1: currlayer->touchmode = pickmode; break;
case 2: currlayer->touchmode = selectmode; break;
case 3: currlayer->touchmode = movemode; break;
case 4: currlayer->touchmode = zoominmode; break;
case 5: currlayer->touchmode = zoomoutmode; break;
default: Warning("Bug detected in ModeChanged!"); return;
}
UpdateCursorImage();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void StateChanged(int index)
{
if (index >= 0 && index < currlayer->algo->NumCellStates()) {
currlayer->drawingstate = index;
} else {
Warning("Bug detected in StateChanged!");
}
}
} // extern "C"
// -----------------------------------------------------------------------------
/* enable next 2 routines if we provide keyboard shortcuts for them!!!
static void DecState()
{
if (currlayer->drawingstate > 0) {
currlayer->drawingstate--;
jsSetState(currlayer->drawingstate);
}
}
// -----------------------------------------------------------------------------
static void IncState()
{
if (currlayer->drawingstate < currlayer->algo->NumCellStates() - 1) {
currlayer->drawingstate++;
jsSetState(currlayer->drawingstate);
}
}
*/
// -----------------------------------------------------------------------------
static void ToggleCursorMode()
{
// state of shift key has changed so may need to toggle cursor mode
if (currlayer->touchmode == drawmode) {
currlayer->touchmode = pickmode;
jsSetMode(currlayer->touchmode);
UpdateCursorImage();
} else if (currlayer->touchmode == pickmode) {
currlayer->touchmode = drawmode;
jsSetMode(currlayer->touchmode);
UpdateCursorImage();
} else if (currlayer->touchmode == zoominmode) {
currlayer->touchmode = zoomoutmode;
jsSetMode(currlayer->touchmode);
UpdateCursorImage();
} else if (currlayer->touchmode == zoomoutmode) {
currlayer->touchmode = zoominmode;
jsSetMode(currlayer->touchmode);
UpdateCursorImage();
}
}
// -----------------------------------------------------------------------------
static void SetRule()
{
StopIfGenerating();
std::string newrule = jsSetRule(currlayer->algo->getrule());
// newrule is empty if user hit Cancel
if (newrule.length() > 0) ChangeRule(newrule);
}
// -----------------------------------------------------------------------------
static void FlipPasteOrSelection(bool direction)
{
if (waitingforpaste) {
FlipPastePattern(direction);
} else if (SelectionExists()) {
FlipSelection(direction);
}
UpdateEverything();
}
// -----------------------------------------------------------------------------
static void RotatePasteOrSelection(bool direction)
{
if (waitingforpaste) {
RotatePastePattern(direction);
} else if (SelectionExists()) {
RotateSelection(direction);
}
UpdateEverything();
}
// -----------------------------------------------------------------------------
extern "C" {
void PasteAction(int item)
{
if (item == 2 && !SelectionExists()) {
// pastesel item is grayed, so ignore click
return;
}
// remove menu
EM_ASM( document.getElementById('pastemenu').style.visibility = 'hidden'; );
paste_menu_visible = false;
switch (item) {
case 0: AbortPaste(); break;
case 1: DoPaste(false); break;
case 2: DoPaste(true); break;
case 3: FlipPastePattern(true); break;
case 4: FlipPastePattern(false); break;
case 5: RotatePastePattern(true); break;
case 6: RotatePastePattern(false); break;
default: Warning("Bug detected in PasteAction!");
}
UpdateEverything();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void SelectionAction(int item)
{
// remove menu first
EM_ASM( document.getElementById('selectionmenu').style.visibility = 'hidden'; );
selection_menu_visible = false;
if (generating && item >= 1 && item <= 13 && item != 2 && item != 5 && item != 6) {
// temporarily stop generating for all actions except Remove, Copy, Shrink, Fit
PauseGenerating();
}
switch (item) {
case 0: RemoveSelection(); break; // WARNING: above test assumes Remove is item 0
case 1: CutSelection(); break;
case 2: CopySelection(); break; // WARNING: above test assumes Copy is item 2
case 3: ClearSelection(); break;
case 4: ClearOutsideSelection(); break;
case 5: ShrinkSelection(false); break; // WARNING: above test assumes Shrink is item 5
case 6: FitSelection(); break; // WARNING: above test assumes Fit is item 6
case 7: RandomFill(); break;
case 8: FlipSelection(true); break;
case 9: FlipSelection(false); break;
case 10: RotateSelection(true); break;
case 11: RotateSelection(false); break;
case 12: currlayer->currsel.Advance(); break;
case 13: currlayer->currsel.AdvanceOutside(); break; // WARNING: above test assumes 13 is last item
default: Warning("Bug detected in SelectionAction!");
}
ResumeGenerating();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void ClearStatus()
{
ClearMessage();
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void OpenClickedFile(const char* filepath)
{
ClearMessage();
StopIfGenerating();
OpenFile(filepath);
}
} // extern "C"
// -----------------------------------------------------------------------------
static void ChangePasteMode(paste_mode newmode)
{
if (pmode != newmode) pmode = newmode;
}
// -----------------------------------------------------------------------------
static void ToggleDisableUndoRedo()
{
allowundo = !allowundo;
if (allowundo) {
if (currlayer->algo->getGeneration() > currlayer->startgen) {
// undo list is empty but user can Reset, so add a generating change
// to undo list so user can Undo or Reset (and then Redo if they wish)
currlayer->undoredo->AddGenChange();
}
} else {
currlayer->undoredo->ClearUndoRedo();
}
UpdateEditBar();
}
// -----------------------------------------------------------------------------
extern "C" {
void UpdateMenuItems(const char* id)
{
// this routine is called just before the given menu is made visible
std::string menu = id;
if (menu == "File_menu") {
// items in this menu don't change
} else if (menu == "Edit_menu") {
if (currlayer->undoredo->CanUndo()) {
EM_ASM( document.getElementById('edit_undo').className = 'item_normal'; );
} else {
EM_ASM( document.getElementById('edit_undo').className = 'item_disabled'; );
}
if (currlayer->undoredo->CanRedo()) {
EM_ASM( document.getElementById('edit_redo').className = 'item_normal'; );
} else {
EM_ASM( document.getElementById('edit_redo').className = 'item_disabled'; );
}
if (allowundo) {
EM_ASM( document.getElementById('edit_disable').innerHTML = 'Disable Undo/Redo'; );
} else {
EM_ASM( document.getElementById('edit_disable').innerHTML = 'Enable Undo/Redo'; );
}
if (SelectionExists()) {
EM_ASM( document.getElementById('edit_cut').className = 'item_normal'; );
EM_ASM( document.getElementById('edit_copy').className = 'item_normal'; );
EM_ASM( document.getElementById('edit_clear').className = 'item_normal'; );
EM_ASM( document.getElementById('edit_clearo').className = 'item_normal'; );
EM_ASM( document.getElementById('edit_remove').className = 'item_normal'; );
} else {
EM_ASM( document.getElementById('edit_cut').className = 'item_disabled'; );
EM_ASM( document.getElementById('edit_copy').className = 'item_disabled'; );
EM_ASM( document.getElementById('edit_clear').className = 'item_disabled'; );
EM_ASM( document.getElementById('edit_clearo').className = 'item_disabled'; );
EM_ASM( document.getElementById('edit_remove').className = 'item_disabled'; );
}
} else if (menu == "PasteMode_menu") {
jsTickMenuItem("paste_mode_and", pmode == And);
jsTickMenuItem("paste_mode_copy", pmode == Copy);
jsTickMenuItem("paste_mode_or", pmode == Or);
jsTickMenuItem("paste_mode_xor", pmode == Xor);
} else if (menu == "Control_menu") {
if (generating) {
EM_ASM( document.getElementById('control_startstop').innerHTML = 'Stop Generating'; );
} else {
EM_ASM( document.getElementById('control_startstop').innerHTML = 'Start Generating'; );
}
if (currlayer->algo->getGeneration() > currlayer->startgen) {
EM_ASM( document.getElementById('control_reset').className = 'item_normal'; );
} else {
EM_ASM( document.getElementById('control_reset').className = 'item_disabled'; );
}
jsTickMenuItem("control_autofit", currlayer->autofit);
jsTickMenuItem("control_hash", currlayer->showhashinfo);
jsTickMenuItem("control_timing", showtiming);
} else if (menu == "Algo_menu") {
jsTickMenuItem("algo0", currlayer->algtype == 0);
jsTickMenuItem("algo1", currlayer->algtype == 1);
jsTickMenuItem("algo2", currlayer->algtype == 2);
jsTickMenuItem("algo3", currlayer->algtype == 3);
jsTickMenuItem("algo4", currlayer->algtype == 4);
jsTickMenuItem("algo5", currlayer->algtype == 5);
} else if (menu == "View_menu") {
if (SelectionExists()) {
EM_ASM( document.getElementById('view_fits').className = 'item_normal'; );
} else {
EM_ASM( document.getElementById('view_fits').className = 'item_disabled'; );
}
jsTickMenuItem("view_grid", showgridlines);
jsTickMenuItem("view_icons", showicons);
if (currlayer->currname != "untitled") {
EM_ASM( document.getElementById('view_info').className = 'item_normal'; );
} else {
EM_ASM( document.getElementById('view_info').className = 'item_disabled'; );
}
} else if (menu == "Scale_menu") {
jsTickMenuItem("scale0", currlayer->view->getmag() == 0);
jsTickMenuItem("scale1", currlayer->view->getmag() == 1);
jsTickMenuItem("scale2", currlayer->view->getmag() == 2);
jsTickMenuItem("scale3", currlayer->view->getmag() == 3);
jsTickMenuItem("scale4", currlayer->view->getmag() == 4);
jsTickMenuItem("scale5", currlayer->view->getmag() == 5);
} else if (menu == "Help_menu") {
// items in this menu don't change
} else if (menu == "pastemenu") {
char text[32];
sprintf(text, "Paste Here (%s)", GetPasteMode());
jsSetInnerHTML("pastehere", text);
if (SelectionExists()) {
EM_ASM( document.getElementById('pastesel').className = 'normal'; );
} else {
EM_ASM( document.getElementById('pastesel').className = 'grayed'; );
}
} else if (menu == "selectionmenu") {
char text[32];
sprintf(text, "Random Fill (%d%%)", randomfill);
jsSetInnerHTML("randfill", text);
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void DoMenuItem(const char* id)
{
std::string item = id;
// items in File menu:
if (item == "file_new") NewUniverse(); else
if (item == "file_open") Open(); else
if (item == "file_openclip") OpenClipboard(); else
if (item == "file_save") Save(); else
if (item == "file_prefs") OpenPrefs(); else
// items in Edit menu:
if (item == "edit_undo") Undo(); else
if (item == "edit_redo") Redo(); else
if (item == "edit_disable") ToggleDisableUndoRedo(); else
if (item == "edit_cut") CutSelection(); else
if (item == "edit_copy") CopySelection(); else
if (item == "edit_clear") ClearSelection(); else
if (item == "edit_clearo") ClearOutsideSelection(); else
if (item == "edit_paste") Paste(); else
if (item == "paste_mode_and") ChangePasteMode(And); else
if (item == "paste_mode_copy") ChangePasteMode(Copy); else
if (item == "paste_mode_or") ChangePasteMode(Or); else
if (item == "paste_mode_xor") ChangePasteMode(Xor); else
if (item == "edit_all") SelectAll(); else
if (item == "edit_remove") RemoveSelection(); else
// items in Control menu:
if (item == "control_startstop") StartStop(); else
if (item == "control_next") Next(); else
if (item == "control_step") Step(); else
if (item == "control_step1") StepBy1(); else
if (item == "control_slower") GoSlower(); else
if (item == "control_faster") GoFaster(); else
if (item == "control_reset") Reset(); else
if (item == "control_autofit") ToggleAutoFit(); else
if (item == "control_hash") ToggleHashInfo(); else
if (item == "control_timing") ToggleTiming(); else
if (item == "algo0") SetAlgo(0); else
if (item == "algo1") SetAlgo(1); else
if (item == "algo2") SetAlgo(2); else
if (item == "algo3") SetAlgo(3); else
if (item == "algo4") SetAlgo(4); else
if (item == "algo5") SetAlgo(5); else
if (item == "control_setrule") SetRule(); else
// items in View menu:
if (item == "view_fitp") Fit(); else
if (item == "view_fits") FitSelection(); else
if (item == "view_middle") Middle(); else
if (item == "view_zoomin") ZoomIn(); else
if (item == "view_zoomout") ZoomOut(); else
if (item == "scale0") SetScale(0); else
if (item == "scale1") SetScale(1); else
if (item == "scale2") SetScale(2); else
if (item == "scale3") SetScale(3); else
if (item == "scale4") SetScale(4); else
if (item == "scale5") SetScale(5); else
if (item == "view_grid") ToggleGrid(); else
if (item == "view_icons") ToggleIcons(); else
if (item == "view_info") Info(); else
// items in Help menu:
if (item == "help_index") StopAndHelp("/Help/index.html"); else
if (item == "help_intro") StopAndHelp("/Help/intro.html"); else
if (item == "help_tips") StopAndHelp("/Help/tips.html"); else
if (item == "help_algos") StopAndHelp("/Help/algos.html"); else
if (item == "help_lexicon") StopAndHelp("/Help/Lexicon/lex.htm"); else
if (item == "help_archives") StopAndHelp("/Help/archives.html"); else
if (item == "help_keyboard") StopAndHelp("/Help/keyboard.html"); else
if (item == "help_refs") StopAndHelp("/Help/refs.html"); else
if (item == "help_formats") StopAndHelp("/Help/formats.html"); else
if (item == "help_bounded") StopAndHelp("/Help/bounded.html"); else
if (item == "help_problems") StopAndHelp("/Help/problems.html"); else
if (item == "help_changes") StopAndHelp("/Help/changes.html"); else
if (item == "help_credits") StopAndHelp("/Help/credits.html"); else
if (item == "help_about") StopAndHelp("/Help/about.html"); else
Warning("Not yet implemented!!!");
}
} // extern "C"
// -----------------------------------------------------------------------------
static const int META_KEY = 666; // cmd key on Mac, start/menu key on Windows (latter untested!!!)
static int TranslateKey(int keycode)
{
// this is a modified version of DOMToGLFWKeyCode in emscripten/src/library_glfw.js
switch (keycode) {
// my changes (based on testing and info at http://unixpapa.com/js/key.html)
case 224 : return META_KEY; // cmd key on Firefox (Mac)
case 91 : return META_KEY; // left cmd key on Safari, Chrome (Mac)
case 93 : return META_KEY; // right cmd key on Safari, Chrome (Mac)
case 92 : return META_KEY; // right start key on Firefox, IE (Windows)
case 219 : return '['; // Firefox, Chrome and Safari (Mac)
case 220 : return '\\'; // Firefox, Chrome and Safari (Mac)
case 221 : return ']'; // Firefox, Chrome and Safari (Mac)
case 173 : return '-'; // Firefox (Mac)
case 189 : return '-'; // Chrome and Safari (Mac)
case 187 : return '='; // Chrome and Safari (Mac)
case 188 : return '<'; // Firefox, Chrome and Safari (Mac)
case 190 : return '>'; // Firefox, Chrome and Safari (Mac)
case 0x09: return 295 ; //DOM_VK_TAB -> GLFW_KEY_TAB
// GLFW_KEY_ESC is not 255???!!! case 0x1B: return 255 ; //DOM_VK_ESCAPE -> GLFW_KEY_ESC
case 0x6A: return 313 ; //DOM_VK_MULTIPLY -> GLFW_KEY_KP_MULTIPLY
case 0x6B: return 315 ; //DOM_VK_ADD -> GLFW_KEY_KP_ADD
case 0x6D: return 314 ; //DOM_VK_SUBTRACT -> GLFW_KEY_KP_SUBTRACT
case 0x6E: return 316 ; //DOM_VK_DECIMAL -> GLFW_KEY_KP_DECIMAL
case 0x6F: return 312 ; //DOM_VK_DIVIDE -> GLFW_KEY_KP_DIVIDE
case 0x70: return 258 ; //DOM_VK_F1 -> GLFW_KEY_F1
case 0x71: return 259 ; //DOM_VK_F2 -> GLFW_KEY_F2
case 0x72: return 260 ; //DOM_VK_F3 -> GLFW_KEY_F3
case 0x73: return 261 ; //DOM_VK_F4 -> GLFW_KEY_F4
case 0x74: return 262 ; //DOM_VK_F5 -> GLFW_KEY_F5
case 0x75: return 263 ; //DOM_VK_F6 -> GLFW_KEY_F6
case 0x76: return 264 ; //DOM_VK_F7 -> GLFW_KEY_F7
case 0x77: return 265 ; //DOM_VK_F8 -> GLFW_KEY_F8
case 0x78: return 266 ; //DOM_VK_F9 -> GLFW_KEY_F9
case 0x79: return 267 ; //DOM_VK_F10 -> GLFW_KEY_F10
case 0x7a: return 268 ; //DOM_VK_F11 -> GLFW_KEY_F11
case 0x7b: return 269 ; //DOM_VK_F12 -> GLFW_KEY_F12
case 0x25: return 285 ; //DOM_VK_LEFT -> GLFW_KEY_LEFT
case 0x26: return 283 ; //DOM_VK_UP -> GLFW_KEY_UP
case 0x27: return 286 ; //DOM_VK_RIGHT -> GLFW_KEY_RIGHT
case 0x28: return 284 ; //DOM_VK_DOWN -> GLFW_KEY_DOWN
case 0x21: return 298 ; //DOM_VK_PAGE_UP -> GLFW_KEY_PAGEUP
case 0x22: return 299 ; //DOM_VK_PAGE_DOWN -> GLFW_KEY_PAGEDOWN
case 0x24: return 300 ; //DOM_VK_HOME -> GLFW_KEY_HOME
case 0x23: return 301 ; //DOM_VK_END -> GLFW_KEY_END
case 0x2d: return 296 ; //DOM_VK_INSERT -> GLFW_KEY_INSERT
case 16 : return 287 ; //DOM_VK_SHIFT -> GLFW_KEY_LSHIFT
case 0x05: return 287 ; //DOM_VK_LEFT_SHIFT -> GLFW_KEY_LSHIFT
case 0x06: return 288 ; //DOM_VK_RIGHT_SHIFT -> GLFW_KEY_RSHIFT
case 17 : return 289 ; //DOM_VK_CONTROL -> GLFW_KEY_LCTRL
case 0x03: return 289 ; //DOM_VK_LEFT_CONTROL -> GLFW_KEY_LCTRL
case 0x04: return 290 ; //DOM_VK_RIGHT_CONTROL -> GLFW_KEY_RCTRL
case 18 : return 291 ; //DOM_VK_ALT -> GLFW_KEY_LALT
case 0x02: return 291 ; //DOM_VK_LEFT_ALT -> GLFW_KEY_LALT
case 0x01: return 292 ; //DOM_VK_RIGHT_ALT -> GLFW_KEY_RALT
case 96 : return 302 ; //GLFW_KEY_KP_0
case 97 : return 303 ; //GLFW_KEY_KP_1
case 98 : return 304 ; //GLFW_KEY_KP_2
case 99 : return 305 ; //GLFW_KEY_KP_3
case 100 : return 306 ; //GLFW_KEY_KP_4
case 101 : return 307 ; //GLFW_KEY_KP_5
case 102 : return 308 ; //GLFW_KEY_KP_6
case 103 : return 309 ; //GLFW_KEY_KP_7
case 104 : return 310 ; //GLFW_KEY_KP_8
case 105 : return 311 ; //GLFW_KEY_KP_9
default : return keycode;
};
}
// -----------------------------------------------------------------------------
extern "C" {
int OnKeyChanged(int keycode, int action)
{
int key = TranslateKey(keycode);
// first check for modifier keys (meta/ctrl/alt/shift);
// note that we need to set flags for these keys BEFORE testing
// jsTextAreaIsActive so users can do things like ctrl-click in canvas while
// a textarea has focus and OnMouseClick will be able to test ctrl_down flag
if (key == META_KEY) {
meta_down = action == GLFW_PRESS;
return 0; // don't call preventDefault
} else if (key == GLFW_KEY_LCTRL || key == GLFW_KEY_RCTRL) {
ctrl_down = action == GLFW_PRESS;
return 0; // don't call preventDefault
} else if (key == GLFW_KEY_LALT || key == GLFW_KEY_RALT) {
alt_down = action == GLFW_PRESS;
return 1;
} else if (key == GLFW_KEY_LSHIFT || key == GLFW_KEY_RSHIFT) {
bool oldshift = shift_down;
shift_down = action == GLFW_PRESS;
if (oldshift != shift_down) ToggleCursorMode();
return 1;
}
if (meta_down || ctrl_down) {
// could be a browser shortcut like ctrl/cmd-Q/X/C/V,
// so don't handle the key here and don't call preventDefault
return 0;
}
// check if a modal dialog is visible
if (jsElementIsVisible("open_overlay") ||
jsElementIsVisible("save_overlay") ||
jsElementIsVisible("prefs_overlay") ||
jsElementIsVisible("info_overlay") ||
jsElementIsVisible("help_overlay") ) {
if (action == GLFW_PRESS && (key == 13 || key == 27)) {
// return key or escape key closes dialog
if (jsElementIsVisible("open_overlay")) {
CancelOpen();
} else if (jsElementIsVisible("save_overlay")) {
if (key == 13) {
EM_ASM( save_pattern(); ); // see shell.html for save_pattern()
} else {
CancelSave();
}
} else if (jsElementIsVisible("prefs_overlay")) {
if (key == 13) {
StorePrefs();
} else {
CancelPrefs();
}
} else if (jsElementIsVisible("info_overlay")) {
EM_ASM( _CloseInfo(); );
} else if (jsElementIsVisible("help_overlay")) {
// some of the above dialogs can be on top of help dialog, so test this last
EM_ASM( _CloseHelp(); );
}
return 1; // call preventDefault
}
return 0;
}
if (jsTextAreaIsActive()) {
// a textarea is active (and probably has focus),
// so don't handle the key here and don't call preventDefault
return 0;
}
if (action == GLFW_PRESS) ClearMessage();
if (action == GLFW_RELEASE) return 1; // non-modifier key was released
// a non-modifer key is down (and meta/ctrl key is NOT currently down)
// check for arrow keys and do panning
if (key == GLFW_KEY_UP) {
if (shift_down)
PanNE();
else
PanUp( SmallScroll(currlayer->view->getheight()) );
return 1;
} else if (key == GLFW_KEY_DOWN) {
if (shift_down)
PanSW();
else
PanDown( SmallScroll(currlayer->view->getheight()) );
return 1;
} else if (key == GLFW_KEY_LEFT) {
if (shift_down)
PanNW();
else
PanLeft( SmallScroll(currlayer->view->getwidth()) );
return 1;
} else if (key == GLFW_KEY_RIGHT) {
if (shift_down)
PanSE();
else
PanRight( SmallScroll(currlayer->view->getwidth()) );
return 1;
}
int ch = key;
if (key >= 'A' && key <= 'Z' && !shift_down) {
// convert to lowercase
ch = ch + 32;
}
switch (ch) {
case 13 : StartStop(); break;
case ' ' : Next(); break;
case '_' : GoSlower(); break;
case '-' : GoSlower(); break;
case '+' : GoFaster(); break;
case '=' : GoFaster(); break;
case '0' : StepBy1(); break;
case '1' : Scale1to1(); break;
case '5' : RandomFill(); break;
case '[' : ZoomOut(); break;
case ']' : ZoomIn(); break;
case 'a' : SelectAll(); break;
case 'A' : RemoveSelection(); break;
case 'f' : Fit(); break;
case 'F' : FitSelection(); break;
case 'h' : Help(); break;
case 'i' : ToggleIcons(); break;
case 'l' : ToggleGrid(); break;
case 'm' : Middle(); break;
case 'o' : Open(); break;
case 'O' : OpenClipboard(); break;
case 'p' : OpenPrefs(); break;
case 'r' : SetRule(); break;
case 's' : Save(); break;
case 't' : ToggleAutoFit(); break;
case 'v' : Paste(); break;
case 'V' : CancelPaste(); break;
case 'x' : FlipPasteOrSelection(false); break;
case 'y' : FlipPasteOrSelection(true); break;
case '<' : RotatePasteOrSelection(false); break;
case '>' : RotatePasteOrSelection(true); break;
case 'z' : Undo(); break;
case 'Z' : Redo(); break;
}
return 1; // call preventDefault
}
} // extern "C"
// -----------------------------------------------------------------------------
static void OnMouseClick(int button, int action)
{
ok_to_check_mouse = true;
if (action == GLFW_PRESS) {
// make sure a textarea element no longer has focus (for testing in on_key_changed);
// note that 'patterns' is a div with a tabindex, and an outline style that prevents
// a focus ring appearing
EM_ASM( document.getElementById('patterns').focus(); );
int x, y;
glfwGetMousePos(&x, &y);
ClearMessage();
if (paste_menu_visible) {
EM_ASM( document.getElementById('pastemenu').style.visibility = 'hidden'; );
paste_menu_visible = false;
return;
}
if (selection_menu_visible) {
EM_ASM( document.getElementById('selectionmenu').style.visibility = 'hidden'; );
selection_menu_visible = false;
return;
}
// test for ctrl/right click in paste image or selection;
// button test should be for GLFW_MOUSE_BUTTON_RIGHT which is defined to be 1 in glfw.h
// but I actually get 2 when right button is pressed in all my browsers (report bug!!!)
if (button == 2 || ctrl_down) {
if (waitingforpaste && PointInPasteImage(x, y)) {
UpdateMenuItems("pastemenu");
jsShowMenu("pastemenu", x, y);
paste_menu_visible = true;
} else if (SelectionExists() && PointInSelection(x, y)) {
UpdateMenuItems("selectionmenu");
jsShowMenu("selectionmenu", x, y);
selection_menu_visible = true;
}
return;
}
// check for click outside viewport
if (x < 0 || x >= currwd || y < 0 || y >= currht) {
if (mouse_down) TouchEnded();
mouse_down = false;
return;
}
bool was_auto_fit = currlayer->autofit;
TouchBegan(x, y);
mouse_down = true;
// TouchBegan might have called TestAutoFit and turned off currlayer->autofit,
// in which case we need to update the check box
if (was_auto_fit && !currlayer->autofit) UpdateEditBar();
} else if (action == GLFW_RELEASE) {
if (mouse_down) TouchEnded();
mouse_down = false;
}
}
// -----------------------------------------------------------------------------
static void OnMouseMove(int x, int y)
{
ok_to_check_mouse = true;
int mousestate = glfwGetMouseButton(GLFW_MOUSE_BUTTON_LEFT);
if (mousestate == GLFW_PRESS) {
// play safe and ignore move outside viewport
if (x < 0 || x >= currwd || y < 0 || y >= currht) return;
TouchMoved(x, y);
}
}
// -----------------------------------------------------------------------------
static int prevwheel = 0;
extern "C" {
void OnMouseWheel(int pos)
{
int x, y;
glfwGetMousePos(&x, &y);
// we use a threshold of 2 in below tests to reduce sensitivity
if (pos + 2 < prevwheel) {
ZoomInPos(x, y);
prevwheel = pos;
} else if (pos - 2 > prevwheel) {
ZoomOutPos(x, y);
prevwheel = pos;
}
}
} // extern "C"
// -----------------------------------------------------------------------------
extern "C" {
void OverCanvas(int entered)
{
if (entered) {
// mouse entered canvas so change cursor image depending on currlayer->touchmode
UpdateCursorImage();
// call CheckMouseLocation in DoFrame
over_canvas = true;
// remove focus from select element to avoid problem if an arrow key is pressed
// (doesn't quite work!!! if selection is NOT changed and arrow key is hit immediately
// then it can cause the selection to change)
EM_ASM(
if (document.activeElement.tagName == 'SELECT') {
document.getElementById('patterns').focus();
};
);
} else {
// mouse exited canvas; cursor is automatically restored to standard arrow
// so no need to do this:
// EM_ASM( Module['canvas'].style.cursor = 'auto'; );
// force XY location to be cleared
CheckMouseLocation(-1, -1);
// we also need to prevent CheckMouseLocation being called in DoFrame because
// it might detect a valid XY location if right/bottom cells are clipped
over_canvas = false;
}
}
} // extern "C"
// -----------------------------------------------------------------------------
static void DoFrame()
{
if (generating && event_checker == 0) {
if (currlayer->currexpo < 0) {
// get current delay (in secs)
float delay = GetCurrentDelay() / 1000.0;
double current_time = glfwGetTime();
// check if it's time to call NextGeneration
if (current_time - last_time >= delay) {
NextGeneration(true);
UpdatePatternAndStatus();
last_time = current_time;
}
} else {
NextGeneration(true);
UpdatePatternAndStatus();
}
}
if (refresh_pattern) {
refresh_pattern = false;
DrawPattern(currindex);
}
glfwSwapBuffers();
// check the current mouse location continuously, but only after the 1st mouse-click or
// mouse-move event, because until then glfwGetMousePos returns 0,0 (report bug???!!!)
if (ok_to_check_mouse && over_canvas) {
int x, y;
glfwGetMousePos(&x, &y);
CheckMouseLocation(x, y);
// also check if cursor image needs to be changed (this can only be done AFTER
// DrawPattern has set pasterect, which is tested by PointInPasteImage)
CheckCursor(x, y);
}
}
// -----------------------------------------------------------------------------
// we need the EMSCRIPTEN_KEEPALIVE flag to avoid our main() routine disappearing
// (a somewhat strange consequence of using -s EXPORTED_FUNCTIONS in Makefile)
int EMSCRIPTEN_KEEPALIVE main()
{
SetMessage("This is Golly 3.3 for the web. Copyright 2005-2019 The Golly Gang.");
InitPaths(); // init tempdir, prefsfile, etc
MAX_MAG = 5; // maximum cell size = 32x32
maxhashmem = 300; // enough for caterpillar
InitAlgorithms(); // must initialize algoinfo first
GetLocalPrefs(); // load user's preferences from local storage
SetMinimumStepExponent(); // for slowest speed
AddLayer(); // create initial layer (sets currlayer)
NewPattern(); // create new, empty universe
UpdateStatus(); // show initial message
InitClipboard(); // initialize clipboard data
UpdateEditBar(); // initialize buttons, drawing state, and check boxes
if (InitGL() == GL_TRUE) {
ResizeCanvas();
// we do our own keyboard event handling (see InitEventHandlers)
// glfwSetKeyCallback(OnKeyChanged);
glfwSetMouseButtonCallback(OnMouseClick);
glfwSetMousePosCallback(OnMouseMove);
// we do our own mouse wheel handling (see InitEventHandlers)
// glfwSetMouseWheelCallback(OnMouseWheel);
emscripten_set_main_loop(DoFrame, 0, 1);
}
glfwTerminate();
return 0;
}
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