Added a gui --selection option to print out the geometry of the selection.

Fixes #425.

data/dbus/org.flameshot.Flameshot.xml

@@ -95,12 +95,14 @@
         captureTaken:
         @id: identificator of the call.
         @rawImage: raw image in PNG format.
+        @selection: QRect selection geometry.
 
         Successful capture signal returning the image.
     -->
     <signal name="captureTaken">
       <arg name="id" type="u" direction="out"/>
       <arg name="rawImage" type="ay" direction="out"/>
+      <arg name="selection" type="(iiii)" direction="out"/>
     </signal>
 
     <!--
@@ -112,5 +114,6 @@
     <signal name="captureFailed">
       <arg name="id" type="u" direction="out"/>
     </signal>
+
   </interface>
 </node>

src/core/controller.cpp

@@ -170,7 +170,8 @@ void Controller::startScreenGrab(const uint id, const int screenNumber)
     }
     QPixmap p(ScreenGrabber().grabScreen(n, ok));
     if (ok) {
-        emit captureTaken(id, p);
+        QRect selection; // `flameshot screen` does not support --selection
+        emit captureTaken(id, p, selection);
     } else {
         emit captureFailed(id);
     }
@@ -325,13 +326,14 @@ void Controller::startFullscreenCapture(const uint id)
     bool ok = true;
     QPixmap p(ScreenGrabber().grabEntireDesktop(ok));
     if (ok) {
-        emit captureTaken(id, p);
+        QRect selection; // `flameshot full` does not support --selection
+        emit captureTaken(id, p, selection);
     } else {
         emit captureFailed(id);
     }
 }
 
-void Controller::handleCaptureTaken(uint id, QPixmap p)
+void Controller::handleCaptureTaken(uint id, QPixmap p, QRect selection)
 {
     auto it = m_requestMap.find(id);
     if (it != m_requestMap.end()) {

src/core/controller.h

@@ -48,7 +48,7 @@ public:
     void updateRecentScreenshots();
 
 signals:
-    void captureTaken(uint id, QPixmap p);
+    void captureTaken(uint id, QPixmap p, QRect selection);
     void captureFailed(uint id);
 
 public slots:
@@ -74,7 +74,7 @@ private slots:
                             const QString& forcedSavePath = QString());
     void startScreenGrab(const uint id = 0, const int screenNumber = -1);
 
-    void handleCaptureTaken(uint id, QPixmap p);
+    void handleCaptureTaken(uint id, QPixmap p, QRect selection);
     void handleCaptureFailed(uint id);
 
 private:

src/core/flameshotdbusadapter.cpp

@@ -109,10 +109,12 @@ void FlameshotDBusAdapter::autostartEnabled(bool enabled)
     controller->updateConfigComponents();
 }
 
-void FlameshotDBusAdapter::handleCaptureTaken(uint id, const QPixmap& p)
+void FlameshotDBusAdapter::handleCaptureTaken(uint id,
+                                              const QPixmap& p,
+                                              QRect selection)
 {
     QByteArray byteArray;
     QBuffer buffer(&byteArray);
     p.save(&buffer, "PNG");
-    emit captureTaken(id, byteArray);
+    emit captureTaken(id, byteArray, selection);
 }

src/core/flameshotdbusadapter.h

@@ -30,7 +30,7 @@ public:
     virtual ~FlameshotDBusAdapter();
 
 signals:
-    void captureTaken(uint id, QByteArray rawImage);
+    void captureTaken(uint id, QByteArray rawImage, QRect selection);
     void captureFailed(uint id);
 
 public slots:
@@ -50,5 +50,5 @@ public slots:
     Q_NOREPLY void autostartEnabled(bool enabled);
 
 private slots:
-    void handleCaptureTaken(uint id, const QPixmap& p);
+    void handleCaptureTaken(uint id, const QPixmap& p, QRect selection);
 };

src/main.cpp

@@ -38,6 +38,16 @@
 #include <QDBusMessage>
 #endif
 
+int waitAfterConnecting(int delay, QCoreApplication& app)
+{
+    QTimer t;
+    t.setInterval(delay + 1000 * 60 * 15); // 15 minutes timeout
+    QObject::connect(&t, &QTimer::timeout, qApp, &QCoreApplication::quit);
+    t.start();
+    // wait
+    return app.exec();
+}
+
 int main(int argc, char* argv[])
 {
     // required for the button serialization
@@ -151,6 +161,10 @@ int main(int argc, char* argv[])
       QStringLiteral("color-code"));
     CommandOption rawImageOption({ "r", "raw" },
                                  QObject::tr("Print raw PNG capture"));
+    CommandOption selectionOption(
+      { "g", "print-geometry" },
+      QObject::tr("Print geometry of the selection in the format W H X Y. Does "
+                  "nothing if raw is specified"));
     CommandOption screenNumberOption(
       { "n", "number" },
       QObject::tr("Define the screen to capture") + ",\n" +
@@ -216,7 +230,9 @@ int main(int argc, char* argv[])
     parser.AddArgument(configArgument);
     auto helpOption = parser.addHelpOption();
     auto versionOption = parser.addVersionOption();
-    parser.AddOptions({ pathOption, delayOption, rawImageOption }, guiArgument);
+    parser.AddOptions(
+      { pathOption, delayOption, rawImageOption, selectionOption },
+      guiArgument);
     parser.AddOptions({ screenNumberOption,
                         clipboardOption,
                         pathOption,
@@ -257,6 +273,7 @@ int main(int argc, char* argv[])
         QString pathValue = parser.value(pathOption);
         int delay = parser.value(delayOption).toInt();
         bool isRaw = parser.isSet(rawImageOption);
+        bool isSelection = parser.isSet(selectionOption);
         DBusUtils dbusUtils;
         CaptureRequest req(CaptureRequest::GRAPHICAL_MODE, delay, pathValue);
         uint id = req.id();
@@ -274,13 +291,10 @@ int main(int argc, char* argv[])
 
         if (isRaw) {
             dbusUtils.connectPrintCapture(sessionBus, id);
-            QTimer t;
+            return waitAfterConnecting(delay, app);
-            t.setInterval(delay + 1000 * 60 * 15); // 15 minutes timeout
+        } else if (isSelection) {
-            QObject::connect(
+            dbusUtils.connectSelectionCapture(sessionBus, id);
-              &t, &QTimer::timeout, qApp, &QCoreApplication::quit);
+            return waitAfterConnecting(delay, app);
-            t.start();
-            // wait
-            return app.exec();
         }
     } else if (parser.isSet(fullArgument)) { // FULL
         QString pathValue = parser.value(pathOption);

src/utils/dbusutils.cpp

@@ -19,6 +19,7 @@
 #include "src/utils/systemnotification.h"
 #include <QApplication>
 #include <QFile>
+#include <QRect>
 #include <QTextStream>
 
 DBusUtils::DBusUtils(QObject* parent)
@@ -34,7 +35,26 @@ void DBusUtils::connectPrintCapture(QDBusConnection& session, uint id)
                     QLatin1String(""),
                     QStringLiteral("captureTaken"),
                     this,
-                    SLOT(captureTaken(uint, QByteArray)));
+                    SLOT(captureTaken(uint, QByteArray, QRect)));
+    // captureFailed
+    session.connect(QStringLiteral("org.flameshot.Flameshot"),
+                    QStringLiteral("/"),
+                    QLatin1String(""),
+                    QStringLiteral("captureFailed"),
+                    this,
+                    SLOT(captureFailed(uint)));
+}
+
+void DBusUtils::connectSelectionCapture(QDBusConnection& session, uint id)
+{
+    m_id = id;
+    // captureTaken
+    session.connect(QStringLiteral("org.flameshot.Flameshot"),
+                    QStringLiteral("/"),
+                    QLatin1String(""),
+                    QStringLiteral("captureTaken"),
+                    this,
+                    SLOT(selectionTaken(uint, QByteArray, QRect)));
     // captureFailed
     session.connect(QStringLiteral("org.flameshot.Flameshot"),
                     QStringLiteral("/"),
@@ -52,11 +72,12 @@ void DBusUtils::checkDBusConnection(const QDBusConnection& connection)
     }
 }
 
-void DBusUtils::captureTaken(uint id, QByteArray rawImage)
+void DBusUtils::captureTaken(uint id, QByteArray rawImage, QRect selection)
 {
     if (m_id == id) {
         QFile file;
         file.open(stdout, QIODevice::WriteOnly);
+
         file.write(rawImage);
         file.close();
         qApp->exit();
@@ -70,3 +91,17 @@ void DBusUtils::captureFailed(uint id)
         qApp->exit(1);
     }
 }
+
+void DBusUtils::selectionTaken(uint id, QByteArray rawImage, QRect selection)
+{
+    if (m_id == id) {
+        QFile file;
+        file.open(stdout, QIODevice::WriteOnly);
+
+        QTextStream out(&file);
+        out << selection.width() << " " << selection.height() << " "
+            << selection.x() << " " << selection.y();
+        file.close();
+        qApp->exit();
+    }
+}

src/utils/dbusutils.h

@@ -29,9 +29,11 @@ public:
 
     void connectPrintCapture(QDBusConnection& session, uint id);
     void checkDBusConnection(const QDBusConnection& connection);
+    void connectSelectionCapture(QDBusConnection& session, uint id);
 
 public slots:
-    void captureTaken(uint id, QByteArray rawImage);
+    void selectionTaken(uint id, QByteArray rawImage, QRect selection);
+    void captureTaken(uint id, QByteArray rawImage, QRect selection);
     void captureFailed(uint id);
 
 private:

src/widgets/capture/capturewidget.cpp

@@ -160,7 +160,7 @@ CaptureWidget::CaptureWidget(const uint id,
 CaptureWidget::~CaptureWidget()
 {
     if (m_captureDone) {
-        emit captureTaken(m_id, this->pixmap());
+        emit captureTaken(m_id, this->pixmap(), m_context.selection);
     } else {
         emit captureFailed(m_id);
     }

src/widgets/capture/capturewidget.h

@@ -63,7 +63,7 @@ public slots:
     void deleteToolwidgetOrClose();
 
 signals:
-    void captureTaken(uint id, QPixmap p);
+    void captureTaken(uint id, QPixmap p, QRect selection);
     void captureFailed(uint id);
     void colorChanged(const QColor& c);
     void thicknessChanged(const int thickness);