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qcam: main_window: Replace start and stop actions with a toggle action

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The main window toolbar contains a start button and a stop button. This
allows starting an already started camera (which is currently not
handled and results in an error) or stopping an already stopped camera.
Replace the two actions with a single start/stop toggle action,
preventing UI misuse and reducing confusion.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2020-03-22 19:47:40 +02:00
parent 77ea51820a
commit 15273b38df
2 changed files with 34 additions and 13 deletions
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34
src/qcam/main_window.cpp
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@ -15,7 +15,6 @@
#include <QComboBox>
#include <QCoreApplication>
#include <QFileDialog>
#include <QIcon>
#include <QImage>
#include <QImageWriter>
#include <QInputDialog>
@ -63,11 +62,10 @@ MainWindow::MainWindow(CameraManager *cm, const OptionsParser::Options &options)
adjustSize();
ret = openCamera();
if (!ret)
ret = startCapture();
if (ret < 0)
quit();
startStopAction_->setChecked(true);
}
MainWindow::~MainWindow()
@ -113,11 +111,13 @@ int MainWindow::createToolbars()
toolbar_->addSeparator();
action = toolbar_->addAction(QIcon(":play-circle.svg"), "start");
connect(action, &QAction::triggered, this, &MainWindow::startCapture);
iconPlay_ = QIcon(":play-circle.svg");
iconStop_ = QIcon(":stop-circle.svg");
action = toolbar_->addAction(QIcon(":stop-circle.svg"), "stop");
connect(action, &QAction::triggered, this, &MainWindow::stopCapture);
action = toolbar_->addAction(iconPlay_, "Start Capture");
action->setCheckable(true);
connect(action, &QAction::toggled, this, &MainWindow::toggleCapture);
startStopAction_ = action;
action = toolbar_->addAction(QIcon(":save.svg"), "saveAs");
connect(action, &QAction::triggered, this, &MainWindow::saveImageAs);
@ -159,12 +159,12 @@ void MainWindow::switchCamera(int index)
std::cout << "Switching to camera " << cam->name() << std::endl;
stopCapture();
startStopAction_->setChecked(false);
camera_->release();
camera_ = cam;
startCapture();
startStopAction_->setChecked(true);
}
std::string MainWindow::chooseCamera()
@ -217,6 +217,19 @@ int MainWindow::openCamera()
return 0;
}
void MainWindow::toggleCapture(bool start)
{
if (start) {
startCapture();
startStopAction_->setIcon(iconStop_);
startStopAction_->setText("Stop Capture");
} else {
stopCapture();
startStopAction_->setIcon(iconPlay_);
startStopAction_->setText("Start Capture");
}
}
int MainWindow::startCapture()
{
int ret;
@ -322,6 +335,7 @@ int MainWindow::startCapture()
}
isCapturing_ = true;
return 0;
error_disconnect: