conflicting packages
QwtCounter(3) | Qwt User's Guide | QwtCounter(3) |
NAME¶
QwtCounter -SYNOPSIS¶
#include <qwt_counter.h> Inherits QwtDoubleRange.Public Types¶
enum Button { Button1, Button2, Button3, ButtonCnt }
Signals¶
void buttonReleased (double value)
Public Member Functions¶
QwtCounter (QWidget *parent=NULL)
Protected Member Functions¶
virtual bool event (QEvent *)
Detailed Description¶
The Counter Widget. A Counter consists of a label displaying a number and one ore more (up to three) push buttons on each side of the label which can be used to increment or decrement the counter's value. A Counter has a range from a minimum value to a maximum value and a step size. The range can be specified using QwtDblRange::setRange(). The counter's value is an integer multiple of the step size. The number of steps by which a button increments or decrements the value can be specified using QwtCounter::setIncSteps(). The number of buttons can be changed with QwtCounter::setNumButtons(). Holding the space bar down with focus on a button is the fastest method to step through the counter values. When the counter underflows/overflows, the focus is set to the smallest up/down button and counting is disabled. Counting is re-enabled on a button release event (mouse or space bar). Example:#include '../include/qwt_counter.h> QwtCounter *cnt; cnt = new QwtCounter(parent, name); cnt->setRange(0.0, 100.0, 1.0); // From 0.0 to 100, step 1.0 cnt->setNumButtons(2); // Two buttons each side cnt->setIncSteps(QwtCounter::Button1, 1); // Button 1 increments 1 step cnt->setIncSteps(QwtCounter::Button2, 20); // Button 2 increments 20 steps connect(cnt, SIGNAL(valueChanged(double)), my_class, SLOT(newValue(double)));
Member Enumeration Documentation¶
enum QwtCounter::Button¶
Button indexConstructor & Destructor Documentation¶
QwtCounter::QwtCounter (QWidget *parent = NULL) [explicit]¶
The default number of buttons is set to 2. The default increments are:- •
- Button 1: 1 step
- •
- Button 2: 10 steps
- •
- Button 3: 100 steps
parent
Member Function Documentation¶
void QwtCounter::buttonReleased (doublevalue) [signal]¶
This signal is emitted when a button has been released Parameters:value The new value
bool QwtCounter::event (QEvent *e) [protected], [virtual]¶
Handle PolishRequest eventsint QwtCounter::incSteps ( QwtCounter::Buttonbtn) const¶
Returns:the number of steps by which a specified button
increments the value or 0 if the button is invalid.
Parameters:
btn One of QwtCounter::Button1,
QwtCounter::Button2, QwtCounter::Button3
void QwtCounter::keyPressEvent (QKeyEvent *e) [protected], [virtual]¶
Handle key events- •
- Ctrl + Qt::Key_Home Step to minValue()
- •
- Ctrl + Qt::Key_End Step to maxValue()
- •
- Qt::Key_Up Increment by incSteps(QwtCounter::Button1)
- •
- Qt::Key_Down Decrement by incSteps(QwtCounter::Button1)
- •
- Qt::Key_PageUp Increment by incSteps(QwtCounter::Button2)
- •
- Qt::Key_PageDown Decrement by incSteps(QwtCounter::Button2)
- •
- Shift + Qt::Key_PageUp Increment by incSteps(QwtCounter::Button3)
- •
- Shift + Qt::Key_PageDown Decrement by incSteps(QwtCounter::Button3)
int QwtCounter::numButtons () const¶
Returns:The number of buttons on each side of the widget.
void QwtCounter::polish () [virtual]¶
Sets the minimum width for the buttonsvoid QwtCounter::rangeChange () [protected], [virtual]¶
Notify change of range. This function updates the enabled property of all buttons contained in QwtCounter. Reimplemented from QwtDoubleRange.void QwtCounter::setEditable (booleditable)¶
Allow/disallow the user to manually edit the value. Parameters:editable true enables editing
See also:
editable()
void QwtCounter::setIncSteps ( QwtCounter::Buttonbtn, intnSteps)¶
Specify the number of steps by which the value is incremented or decremented when a specified button is pushed. Parameters:btn One of QwtCounter::Button1,
QwtCounter::Button2, QwtCounter::Button3
nSteps Number of steps
void QwtCounter::setMaxValue (doublevalue)¶
Set the maximum value of the range Parameters:value Maximum value
See also:
setMinValue(), maxVal()
void QwtCounter::setMinValue (doublevalue)¶
Set the minimum value of the range Parameters:value Minimum value
See also:
setMaxValue(), minVal()
void QwtCounter::setNumButtons (intn)¶
Specify the number of buttons on each side of the label. Parameters:n Number of buttons
void QwtCounter::setStep (doublestepSize)¶
Set the step size Parameters:stepSize Step size
See also:
QwtDoubleRange::setStep()
Reimplemented from QwtDoubleRange.
void QwtCounter::setStepButton1 (intnSteps)¶
Set the number of increment steps for button 1 Parameters:nSteps Number of steps
void QwtCounter::setStepButton2 (intnSteps)¶
Set the number of increment steps for button 2 Parameters:nSteps Number of steps
void QwtCounter::setStepButton3 (intnSteps)¶
Set the number of increment steps for button 3 Parameters:nSteps Number of steps
void QwtCounter::setValue (doublev) [virtual]¶
Set a new value. Parameters:v new value Calls QwtDoubleRange::setValue
and does all visual updates.
See also:
QwtDoubleRange::setValue()
Reimplemented from QwtDoubleRange.
double QwtCounter::value () const [virtual]¶
Returns:Current value
Reimplemented from QwtDoubleRange.
void QwtCounter::valueChanged (doublevalue) [signal]¶
This signal is emitted when the counter's value has changed Parameters:value The new value
void QwtCounter::wheelEvent (QWheelEvent *e) [protected], [virtual]¶
Handle wheel events Parameters:e Wheel event
Author¶
Generated automatically by Doxygen for Qwt User's Guide from the source code.Tue Nov 20 2012 | Version 5.2.3 |