Iosevka/snapshot/getsnap.js
2016-05-28 00:47:03 +08:00

95 lines
2.6 KiB
JavaScript

const {app, BrowserWindow} = require('electron');
var argv = require('yargs').argv;
var fs = require('fs');
var cp = require('child_process');
var mainWindow = null;
var allWindowClosed = false;
var pendingTasks = 0;
var zoom = 2
function checkQuit() {
if (allWindowClosed && pendingTasks == 0) app.quit();
}
app.on('window-all-closed', function () {
allWindowClosed = true;
checkQuit()
});
function combineImages(images, outfile, width, height, doubleTrim) {
var command = 'convert ' + images.join(' ') + ' -append -crop ' + width + 'x' + height + '+0+0 +repage -bordercolor #008000 -fuzz 5% -trim ' + (doubleTrim ? '-bordercolor ' + doubleTrim + ' -trim ' : '') + outfile;
console.log(command);
cp.exec(command, function (err, stdout, stderr) {
images.forEach(function (file) {
fs.unlinkSync(file);
});
pendingTasks -= 1;
checkQuit();
})
};
var ipc = require('electron').ipcMain;
function GOTO(phase) { currentPhase = phase };
var phases = {
prepare: function (event, arg) {
console.log(arg);
GOTO(phases['receive-rect']);
},
'receive-rect': function (event, rect) {
pendingTasks += 1
rect = JSON.parse(JSON.stringify(rect));
var file = argv.dir + '/' + rect.name + '.png';
var j = 0;
var totalFiles = Math.ceil(rect.height / rect.windowHeight);
var pendingFiles = totalFiles;
function doneFileWrite() {
pendingFiles -= 1;
if (pendingFiles <= 0) {
var images = [];
for (var k = 0; k < j; k++) {
images.push(argv.dir + '/' + rect.name + '.' + k + '.png')
}
combineImages(images, file, rect.windowWidth * rect.dpi, rect.height * rect.dpi, rect.doubleTrim);
}
}
function step() {
event.sender.send('scroll', rect.y + j * rect.windowHeight);
GOTO(function (event) {
mainWindow.capturePage(function (image) {
fs.writeFile(argv.dir + '/' + rect.name + '.' + j + '.png', image.toPng(), doneFileWrite);
j += 1;
if (j >= totalFiles) { // Move to next image
event.sender.send('complete', file);
GOTO(phases['receive-rect']);
} else {
step()
}
})
})
};
step()
}
};
var currentPhase = phases['prepare'];
ipc.on('snapshot', function () {
currentPhase.apply(this, arguments)
});
ipc.on('log', function (event, arg) {
console.log(arg);
})
app.on('ready', function () {
mainWindow = new BrowserWindow({
width: 64 * 16 * zoom, height: 1024 * zoom,
x: 5000, y: 5000,
webPreferences: {
zoomFactor: zoom
},
show: false
});
mainWindow.showInactive();
mainWindow.loadURL('file://' + __dirname + '/index.html');
mainWindow.blurWebView();
//mainWindow.hide();
});