QWT API (中文) 7.0.1
Qt绘图库 - 中文API文档
载入中...
搜索中...
未找到
qwt_plot_magnifier.h
1/******************************************************************************
2 * Qwt Widget Library
3 * Copyright (C) 1997 Josef Wilgen
4 * Copyright (C) 2002 Uwe Rathmann
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the Qwt License, Version 1.0
8 *
9 * Modified by ChenZongYan in 2024 <czy.t@163.com>
10 * Summary of major modifications (see ChangeLog.md for full history):
11 * 1. CMake build system & C++11 throughout.
12 * 2. Core panner/ zoomer refactored:
13 * - QwtPanner → QwtCachePanner (pixmap-cache version)
14 * - New real-time QwtPlotPanner derived from QwtPicker.
15 * 3. Zoomer supports multi-axis.
16 * 4. Parasite-plot framework:
17 * - QwtFigure, QwtPlotParasiteLayout, QwtPlotTransparentCanvas,
18 * - QwtPlotScaleEventDispatcher, built-in pan/zoom on axis.
19 * 5. New picker: QwtPlotSeriesDataPicker (works with date axis).
20 * 6. Raster & color-map extensions:
21 * - QwtGridRasterData (2-D table + interpolation)
22 * - QwtLinearColorMap::stopColors(), stopPos() API rename.
23 * 7. Bar-chart: expose pen/brush control.
24 * 8. Amalgamated build: single QwtPlot.h / QwtPlot.cpp pair in src-amalgamate.
25 *****************************************************************************/
26
27#ifndef QWT_PLOT_MAGNIFIER_H
28#define QWT_PLOT_MAGNIFIER_H
29
30#include "qwt_global.h"
31#include "qwt_axis_id.h"
32#include "qwt_magnifier.h"
33
34class QwtPlot;
35
57class QWT_EXPORT QwtPlotMagnifier : public QwtMagnifier
58{
59 Q_OBJECT
60
61 public:
62// Constructor
63 explicit QwtPlotMagnifier( QWidget* );
64
65 // Destructor
66 virtual ~QwtPlotMagnifier();
67
68 // Enable or disable an axis for magnification
69 void setAxisEnabled( QwtAxisId, bool on );
70
71 // Check if an axis is enabled for magnification
72 bool isAxisEnabled( QwtAxisId ) const;
73
74 // Return the observed plot canvas
75 QWidget* canvas();
76
77 // Return the observed plot canvas (const version)
78 const QWidget* canvas() const;
79
80 // Return the plot widget containing the observed canvas
81 QwtPlot* plot();
82
83 // Return the plot widget containing the observed canvas (const version)
84 const QwtPlot* plot() const;
85
86public Q_SLOTS:
87 // Rescale the plot axes by the given factor
88 virtual void rescale( double factor ) override;
89
90 private:
91 class PrivateData;
92 PrivateData* m_data;
93};
94
95#endif
QwtMagnifier 提供逐步放大的缩放功能
Definition qwt_magnifier.h:51
virtual void rescale(double factor)=0
重新缩放父控件
QwtPlotMagnifier 通过逐步放大提供缩放功能
Definition qwt_plot_magnifier.h:58
二维绘图部件
Definition qwt_plot.h:138