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#include <qlabel.h>
#include <qhbox.h>
#include <qstatusbar.h>
#include <qtoolbar.h>
#include <qtoolbutton.h>
#include <qspinbox.h>
#include <qwhatsthis.h>
#include <qpixmap.h>
#include "randomplot.h"
#include "mainwindow.h"
#include "start.xpm"
#include "clear.xpm"
class MyToolBar: public QToolBar
{
public:
MyToolBar(MainWindow *);
void addSpacing(int);
void addStretch();
};
MyToolBar::MyToolBar(MainWindow *parent):
QToolBar(parent)
{
}
void MyToolBar::addSpacing(int spacing)
{
QLabel *label = new QLabel(this);
label->setFixedWidth(spacing);
}
void MyToolBar::addStretch()
{
QLabel *label = new QLabel(this);
setStretchableWidget(label);
}
MainWindow::MainWindow()
{
setDockEnabled(TornOff, TRUE);
setRightJustification(TRUE);
(void)toolBar();
(void)statusBar();
d_plot = new RandomPlot(this);
d_plot->setMargin(4);
setCentralWidget(d_plot);
connect(d_startBtn, SIGNAL(toggled(bool)), this, SLOT(appendPoints(bool)));
connect(d_clearBtn, SIGNAL(clicked()), d_plot, SLOT(clear()));
connect(d_plot, SIGNAL(running(bool)), this, SLOT(showRunning(bool)));
initWhatsThis();
}
QToolBar *MainWindow::toolBar()
{
MyToolBar *toolBar = new MyToolBar(this);
d_startBtn = new QToolButton(toolBar);
d_startBtn->setUsesTextLabel(TRUE);
d_startBtn->setPixmap(QPixmap(start_xpm));
d_startBtn->setToggleButton(TRUE);
d_clearBtn = new QToolButton(toolBar);
d_clearBtn->setUsesTextLabel(TRUE);
d_clearBtn->setPixmap(QPixmap(clear_xpm));
d_clearBtn->setTextLabel("Clear", FALSE);
QToolButton *helpBtn = QWhatsThis::whatsThisButton(toolBar);
helpBtn->setUsesTextLabel(TRUE);
helpBtn->setTextLabel("Help", FALSE);
toolBar->addSpacing(20);
toolBar->addStretch();
QHBox *hBox = new QHBox(toolBar);
QLabel *label = new QLabel("Points ", hBox);
d_randomCount = new QSpinBox(1, 100000, 100, hBox);
d_randomCount->setValue(1000);
toolBar->addSpacing(20);
hBox = new QHBox(toolBar);
label = new QLabel("Delay ", hBox);
d_timerCount = new QSpinBox(0, 100000, 100, hBox);
d_timerCount->setValue(0);
label = new QLabel(" ms", hBox);
toolBar->addSpacing(10);
showRunning(FALSE);
d_startBtn->setMinimumWidth(helpBtn->sizeHint().width() + 20);
d_clearBtn->setMinimumWidth(helpBtn->sizeHint().width() + 20);
helpBtn->setMinimumWidth(helpBtn->sizeHint().width() + 20);
return toolBar;
}
void MainWindow::appendPoints(bool on)
{
if ( on )
d_plot->append(d_timerCount->text().toInt(),
d_randomCount->text().toInt());
else
d_plot->stop();
}
void MainWindow::showRunning(bool running)
{
d_randomCount->setEnabled(!running);
d_timerCount->setEnabled(!running);
d_startBtn->setOn(running);
d_startBtn->setTextLabel(running ? "Stop" : "Start", FALSE);
}
void MainWindow::initWhatsThis()
{
QWhatsThis::add(d_plot,
"Zooming is enabled until the selected area gets "
"too small for the significance on the axes.\n\n"
"You can zoom in using the left mouse button.\n"
"The middle mouse button is used to go back to the "
"previous zoomed area.\n"
"The right mouse button is used to unzoom completely."
);
QWhatsThis::add(d_randomCount,
"Number of random points that will be generated."
);
QWhatsThis::add(d_timerCount,
"Delay between the generation of two random points."
);
QWhatsThis::add(d_startBtn,
"Start generation of random points.\n\n"
"The intention of this example is to show how to implement "
"growing curves. The points will be generated and displayed "
"one after the other.\n"
"To check the performance, a small delay and a large number "
"of points are useful. To watch the curve growing, a delay "
" > 300 ms and less points are better.\n"
"To inspect the curve, stacked zooming is implemented using the "
"mouse buttons on the plot."
);
QWhatsThis::add(d_clearBtn,
"Remove all points."
);
}
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