git.iko.soy/unity8
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unity8/plugins/ScreenGrabber/screengrabber.cpp
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1/*
2 * Copyright (C) 2014 Canonical, Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 *
16 * Authors: Alberto Aguirre <alberto.aguirre@canonical.com>
17 */
19#include "screengrabber.h"
21#include <QDir>
22#include <QDateTime>
23#include <QStandardPaths>
24#include <QtGui/QImage>
25#include <QtGui/QGuiApplication>
26#include <QtQuick/QQuickWindow>
27#include <QtConcurrent/QtConcurrentRun>
29#include <QDebug>
31void saveScreenshot(QImage screenshot, QString filename, QString format, int quality)
33 if (!screenshot.save(filename, format.toLatin1().data(), quality))
34 qWarning() << "ScreenShotter: failed to save snapshot!";
37ScreenGrabber::ScreenGrabber(QObject *parent)
38 : QObject(parent),
39 screenshotQuality(0)
41 QDir screenshotsDir(QStandardPaths::displayName(QStandardPaths::PicturesLocation));
42 screenshotsDir.mkdir("Screenshots");
43 screenshotsDir.cd("Screenshots");
44 if (screenshotsDir.exists())
45 {
46 fileNamePrefix = screenshotsDir.absolutePath();
47 fileNamePrefix.append("/screenshot");
48 }
49 else
50 {
51 qWarning() << "ScreenShotter: failed to create directory at: " << screenshotsDir.absolutePath();
52 }
55void ScreenGrabber::captureAndSave()
57 if (fileNamePrefix.isEmpty())
58 {
59 qWarning() << "ScreenShotter: no directory to save screenshot";
60 return;
61 }
63 const QWindowList windows = QGuiApplication::topLevelWindows();
64 if (windows.empty())
65 {
66 qWarning() << "ScreenShotter: no top level windows found!";
67 return;
68 }
70 QQuickWindow *main_window = qobject_cast<QQuickWindow *>(windows[0]);
71 if (!main_window)
72 {
73 qWarning() << "ScreenShotter: can only take screenshots of QQuickWindows";
74 return;
75 }
77 QImage screenshot = main_window->grabWindow();
78 QtConcurrent::run(saveScreenshot, screenshot, makeFileName(), getFormat(), screenshotQuality);
81QString ScreenGrabber::makeFileName()
83 QString fileName(fileNamePrefix);
84 fileName.append(QDateTime::currentDateTime().toString("yyyymmdd_hhmmsszzz"));
85 fileName.append(".");
86 fileName.append(getFormat());
87 return fileName;
90QString ScreenGrabber::getFormat()
92 //TODO: This should be configurable (perhaps through gsettings?)
93 return "png";