Files
flameshot/src/capture/screenshot.cpp
2017-06-14 01:02:43 +02:00

286 lines
9.2 KiB
C++

// Copyright 2017 Alejandro Sirgo Rica
//
// This file is part of Flameshot.
//
// Flameshot is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Flameshot is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Flameshot. If not, see <http://www.gnu.org/licenses/>.
#include "screenshot.h"
#include "button.h"
#include "capturemodification.h"
#include <QStandardPaths>
#include <QIcon>
#include <QSettings>
#include <QDateTime>
#include <QObject>
#include <QString>
#include <QMessageBox>
#include <QImageWriter>
#include <QFileDialog>
#include <QPainter>
#include <QBuffer>
#include <QUrlQuery>
#include <QNetworkRequest>
#include <QNetworkAccessManager>
// Screenshot is an extension of QPixmap which lets you manage specific tasks
Screenshot::Screenshot(const QPixmap &p, QObject *parent) : QObject(parent),
m_baseScreenshot(p),
m_modifiedScreenshot(p)
{
}
Screenshot::~Screenshot() {
}
void Screenshot::setScreenshot(const QPixmap &p) {
m_baseScreenshot = p;
m_modifiedScreenshot = p;
}
// getScreenshot returns the screenshot with no modifications
QPixmap Screenshot::getBaseScreenshot() const {
return m_baseScreenshot;
}
// getScreenshot returns the screenshot with all the modifications
QPixmap Screenshot::getScreenshot() const {
return m_modifiedScreenshot;
}
// graphicalSave generates a graphical window to ask about the save path and
// saves the screenshot with all the modifications in such directory
QString Screenshot::graphicalSave(const QRect &selection, QWidget *parent) const {
const QString format = "png";
QSettings settings;
QString savePath = settings.value("savePath").toString();
if (savePath.isEmpty() || !QDir(savePath).exists()) {
savePath = QStandardPaths::writableLocation(QStandardPaths::PicturesLocation);
if (savePath.isEmpty()) {
savePath = QDir::currentPath();
}
}
// find unused name adding _n where n is a number
QString tempName = QObject::tr("/screenshot");
QFileInfo checkFile(savePath + tempName + "." + format);
if (checkFile.exists()) {
tempName += "_";
int i = 1;
while (true) {
checkFile.setFile(
savePath + tempName + QString::number(i) + "." + format);
if (!checkFile.exists()) {
tempName += QString::number(i);
break;
}
++i;
}
}
savePath += tempName + "." + format;
QFileDialog fileDialog(parent, QObject::tr("Save As"), savePath);
fileDialog.setAcceptMode(QFileDialog::AcceptSave);
fileDialog.setFileMode(QFileDialog::AnyFile);
fileDialog.setDirectory(savePath);
QStringList mimeTypes;
for (const QByteArray &bf: QImageWriter::supportedMimeTypes())
mimeTypes.append(QLatin1String(bf));
fileDialog.setMimeTypeFilters(mimeTypes);
fileDialog.selectMimeTypeFilter("image/" + format);
fileDialog.setDefaultSuffix(format);
fileDialog.setWindowIcon(QIcon(":img/flameshot.png"));
bool saved = false;
QString fileName;
do {
if (fileDialog.exec() != QDialog::Accepted) { return fileName; }
fileName = fileDialog.selectedFiles().first();
const QString pathNoFile = fileName.left(fileName.lastIndexOf("/"));
settings.setValue("savePath", pathNoFile);
QPixmap pixToSave;
if (selection.isEmpty()) {
pixToSave = m_modifiedScreenshot;
} else { // save full screen when no selection
pixToSave = m_modifiedScreenshot.copy(selection);
}
// if (settings.value("mouseVisible").toBool()) {
// // TO DO
// }
saved = pixToSave.save(fileName);
if (!saved) {
QMessageBox saveErrBox(QMessageBox::Warning, QObject::tr("Save Error"),
QObject::tr("The image could not be saved to \"%1\".")
.arg(QDir::toNativeSeparators(fileName)));
saveErrBox.setWindowIcon(QIcon(":img/flameshot.png"));
saveErrBox.exec();
}
} while(!saved);
return fileName;
}
// paintModification adds a new modification to the screenshot
QPixmap Screenshot::paintModification(const CaptureModification &modification) {
QPainter painter(&m_modifiedScreenshot);
painter.setRenderHint(QPainter::Antialiasing);
paintInPainter(painter, modification);
return m_modifiedScreenshot;
}
// paintTemporalModification paints a modification without updating the
// member pixmap
QPixmap Screenshot::paintTemporalModification(
const CaptureModification &modification)
{
QPixmap tempPix = m_modifiedScreenshot;
QPainter painter(&tempPix);
if (modification.getType() != Button::Type::pencil) {
painter.setRenderHint(QPainter::Antialiasing);
}
paintInPainter(painter, modification);
return tempPix;
}
// paintBaseModifications overrides the modifications of the screenshot
// with new ones.
QPixmap Screenshot::paintBaseModifications(
const QVector<CaptureModification> &m)
{
m_modifiedScreenshot = m_baseScreenshot;
for (const CaptureModification modification: m) {
paintModification(modification);
}
return m_modifiedScreenshot;
}
namespace {
const int ArrowWidth = 10;
const int ArrowHeight = 18;
QPainterPath getArrowHead(QPoint p1, QPoint p2) {
QLineF body(p1, p2);
int originalLength = body.length();
body.setLength(ArrowWidth);
// move across the line up to the head
//QPointF = ;
QLineF temp(QPoint(0,0), p2-p1);
temp.setLength(originalLength-ArrowHeight);
QPointF bottonTranslation(temp.p2());
// generates the transformation to center of the arrowhead
body.setAngle(body.angle()+90);
QPointF temp2 = p1-body.p2();
QPointF centerTranslation((temp2.x()/2), (temp2.y()/2));
body.translate(bottonTranslation);
body.translate(centerTranslation);
QPainterPath path;
path.moveTo(p2);
path.lineTo(body.p1());
path.lineTo(body.p2());
path.lineTo(p2);
return path;
}
// gets a shorter line to prevent overlap in the point of the arrow
QLine getShorterLine(QPoint p1, QPoint p2) {
QLineF l(p1, p2);
l.setLength(l.length()-ArrowHeight);
return l.toLine();
}
}
// paintInPainter is an aux method to prevent duplicated code, it draws the
// passed modification to the painter.
void Screenshot::paintInPainter(QPainter &painter,
const CaptureModification &modification)
{
painter.setPen(QPen(modification.getColor(), 2));
QVector<QPoint> points = modification.getPoints();
switch (modification.getType()) {
case Button::Type::arrow:
painter.drawLine(getShorterLine(points[0], points[1]));
painter.fillPath(getArrowHead(points[0], points[1]),
QBrush(modification.getColor()));
break;
case Button::Type::circle:
painter.drawEllipse(QRect(points[0], points[1]));
break;
case Button::Type::line:
painter.drawLine(points[0], points[1]);
break;
case Button::Type::marker:
painter.setOpacity(0.35);
painter.setPen(QPen(modification.getColor(), 14));
painter.drawLine(points[0], points[1]);
painter.setOpacity(1);
break;
case Button::Type::pencil:
painter.drawPolyline(points.data(), points.size());
break;
case Button::Type::selection:
painter.drawRect(QRect(points[0], points[1]));
break;
case Button::Type::rectangle:
painter.setBrush(QBrush(modification.getColor()));
painter.drawRect(QRect(points[0], points[1]));
break;
default:
break;
}
}
void Screenshot::uploadToImgur(QNetworkAccessManager *accessManager,
const QRect &selection)
{
QString title ="flameshot_screenshot";
QString datetime = QDateTime().toString();
QString description = "flameshot " + datetime;
QPixmap pixToSave;
if (selection.isEmpty()) {
pixToSave = m_modifiedScreenshot;
} else { // save full screen when no selection
pixToSave = m_modifiedScreenshot.copy(selection);
}
QByteArray byteArray;
QBuffer buffer(&byteArray);
pixToSave.save(&buffer, "PNG");
QUrlQuery urlQuery;
urlQuery.addQueryItem("title", title);
urlQuery.addQueryItem("description", description);
QNetworkRequest request;
QUrl url("https://api.imgur.com/3/image");
url.setQuery(urlQuery);
request.setUrl(url);
request.setHeader(QNetworkRequest::ContentTypeHeader,
"application/application/x-www-form-urlencoded");
request.setRawHeader("Authorization", "Client-ID 313baf0c7b4d3ff");
accessManager->post(request, byteArray);
}