#include <qwt_sclif.h>
Inheritance diagram for QwtScaleIf:

Public Member Functions | |
| QwtScaleIf () | |
| virtual | ~QwtScaleIf () |
| void | setScale (double vmin, double vmax, int logarithmic=0) |
| void | setScale (double vmin, double vmax, double step, int logarithmic=0) |
| void | setScale (const QwtScaleDiv &s) |
| void | setScaleMaxMajor (int ticks) |
| void | setScaleMaxMinor (int ticks) |
| void | autoScale () |
| int | scaleMaxMinor () const |
| int | scaleMaxMajor () const |
| void | setScaleDraw (QwtScaleDraw *) |
| const QwtScaleDraw * | scaleDraw () const |
Protected Member Functions | |
| bool | hasUserScale () |
| virtual void | scaleChange ()=0 |
| QwtScaleDraw * | scaleDraw () |
Protected Attributes | |
| QwtScaleDraw * | d_scaleDraw |
| int | d_maxMajor |
| int | d_maxMinor |
Private Attributes | |
| bool | d_userScale |
This interface class is used to provide classes with a protected QwtScaleDraw member and a public interface to access that scale.
For internal use only.
The primary purpose of this class is to define a common interface for classes which are supposed to contain a ScaleDraw class. It provides a protected ScaleDraw member called d_scale and a couple of public member functions which allow direct but restricted access to this scale by the user.
Widgets derived from this class have to implement the member function scaleChange(), which is called to notify changes of the scale parameters and usually requires repainting or resizing respectively.
In general, a class derived from QwtScaleIf is expected to manage the division and the position of its scale internally when no user-defined scale is set. It should take the d_maxMinor and d_maxMajor members into account, which can be set by the user. An implementation can check if a user-defined scale is set by calling the hasUserScale() member.
Definition at line 46 of file qwt_sclif.h.
|
|
Constructor.
Definition at line 13 of file qwt_sclif.cpp. References d_maxMajor, d_maxMinor, d_scaleDraw, d_userScale, and QwtScaleDraw::setScale(). |
|
|
Destructor.
Definition at line 24 of file qwt_sclif.cpp. References d_scaleDraw. |
|
|
Advise the widget to control the scale range internally. Autoscaling is on by default.
Definition at line 99 of file qwt_sclif.cpp. References d_userScale, and scaleChange(). |
|
|
Check for user-defined scale.
Definition at line 68 of file qwt_sclif.h. Referenced by QwtSlider::rangeChange(), QwtKnob::rangeChange(), QwtSlider::scaleChange(), and QwtThermo::setRange(). |
|
|
Notify changed scale.
Implemented in QwtKnob, QwtSlider, and QwtThermo. Referenced by autoScale(), setScale(), setScaleMaxMajor(), and setScaleMaxMinor(). |
|
|
Definition at line 168 of file qwt_sclif.cpp. References d_scaleDraw. |
|
|
Definition at line 177 of file qwt_sclif.cpp. References d_scaleDraw. |
|
|
Definition at line 61 of file qwt_sclif.h. |
|
|
Definition at line 59 of file qwt_sclif.h. |
|
|
Assign a user-defined scale division
Definition at line 81 of file qwt_sclif.cpp. References d_maxMajor, d_maxMinor, d_scaleDraw, d_userScale, QwtScaleDiv::majCnt(), QwtScaleDiv::minCnt(), scaleChange(), QwtScaleDraw::scaleDiv(), and QwtScaleDraw::setScale(). |
|
||||||||||||||||||||
|
Specify a user-defined scale. By default, the widget is supposed to control the range of its scale automatically, but sometimes it is desirable to have a user-defined scale which is not in sync with the widget's range, e.g. if a logarithmic scale is needed (sliders don't support that) or if the scale is required to have a fixed range (say 0...100%), independent of the widget's range.
Definition at line 66 of file qwt_sclif.cpp. References d_maxMajor, d_maxMinor, d_scaleDraw, d_userScale, scaleChange(), QwtScaleDraw::scaleDiv(), and QwtScaleDraw::setScale(). |
|
||||||||||||||||
|
Specify a user-defined scale. By default, the widget is supposed to control the range of its scale automatically, but sometimes it is desirable to have a user-defined scale which is not in sync with the widget's range, e.g. if a logarithmic scale is needed (sliders don't support that) or if the scale is required to have a fixed range (say 0...100%), independent of the widget's range.
Definition at line 44 of file qwt_sclif.cpp. |
|
|
Set a scale draw sd has to be created with new and will be deleted in QwtScaleIf::~QwtScaleIf or the next call of QwtScaleIf::setScaleDraw.
Definition at line 155 of file qwt_sclif.cpp. References d_scaleDraw. |
|
|
Set the maximum number of major tick intervals. The scale's major ticks are calculated automatically such that the number of major intervals does not exceed ticks. The default value is 5.
Definition at line 117 of file qwt_sclif.cpp. References d_maxMajor, d_maxMinor, d_scaleDraw, QwtScaleDiv::hBound(), QwtScaleDiv::lBound(), QwtScaleDiv::logScale(), scaleChange(), QwtScaleDraw::scaleDiv(), and QwtScaleDraw::setScale(). |
|
|
Set the maximum number of minor tick intervals. The scale's minor ticks are calculated automatically such that the number of minor intervals does not exceed ticks. The default value is 3.
Definition at line 138 of file qwt_sclif.cpp. References d_maxMajor, d_maxMinor, d_scaleDraw, QwtScaleDiv::hBound(), QwtScaleDiv::lBound(), QwtScaleDiv::logScale(), scaleChange(), QwtScaleDraw::scaleDiv(), and QwtScaleDraw::setScale(). |
|
|
Definition at line 75 of file qwt_sclif.h. Referenced by QwtThermo::init(), QwtScaleIf(), QwtSlider::rangeChange(), QwtKnob::rangeChange(), QwtSlider::scaleChange(), QwtThermo::setRange(), setScale(), setScaleMaxMajor(), and setScaleMaxMinor(). |
|
|
Definition at line 76 of file qwt_sclif.h. Referenced by QwtThermo::init(), QwtScaleIf(), QwtSlider::rangeChange(), QwtKnob::rangeChange(), QwtSlider::scaleChange(), QwtThermo::setRange(), setScale(), setScaleMaxMajor(), and setScaleMaxMinor(). |
|
|
|
Definition at line 79 of file qwt_sclif.h. Referenced by autoScale(), QwtScaleIf(), and setScale(). |
1.3.2