1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* spinbox.h - spin box with shift-click step value and read-only option
* Program: kalarm
* Copyright © 2002-2006,2008 by David Jarvie <djarvie@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef SPINBOX_H
#define SPINBOX_H
#include <tqspinbox.h>
/**
* @short Spin box with accelerated shift key stepping and read-only option.
*
* The SpinBox class provides a TQSpinBox with accelerated stepping using the shift key.
*
* A separate step increment may optionally be specified for use when the shift key is
* held down. Typically this would be larger than the normal step. Then, when the user
* clicks the spin buttons, he/she can increment or decrement the value faster by holding
* the shift key down.
*
* The widget may be set as read-only. This has the same effect as disabling it, except
* that its appearance is unchanged.
*
* @author David Jarvie <software@astrojar.org.uk>
*/
class SpinBox : public TQSpinBox
{
Q_OBJECT
public:
/** Constructor.
* @param parent The parent object of this widget.
* @param name The name of this widget.
*/
explicit SpinBox(TQWidget* parent = 0, const char* name = 0);
/** Constructor.
* @param minValue The minimum value which the spin box can have.
* @param maxValue The maximum value which the spin box can have.
* @param step The (unshifted) step interval.
* @param parent The parent object of this widget.
* @param name The name of this widget.
*/
SpinBox(int minValue, int maxValue, int step = 1, TQWidget* parent = 0, const char* name = 0);
/** Returns true if the widget is read only. */
bool isReadOnly() const { return mReadOnly; }
/** Sets whether the spin box can be changed by the user.
* @param readOnly True to set the widget read-only, false to set it read-write.
*/
virtual void setReadOnly(bool readOnly);
/** Returns whether the spin box value text is selected when its value is stepped. */
bool selectOnStep() const { return mSelectOnStep; }
/** Sets whether the spin box value text should be selected when its value is stepped. */
void setSelectOnStep(bool sel) { mSelectOnStep = sel; }
/** Adds a value to the current value of the spin box. */
void addValue(int change) { addValue(change, false); }
/** Returns the minimum value of the spin box. */
int minValue() const { return mMinValue; }
/** Returns the maximum value of the spin box. */
int maxValue() const { return mMaxValue; }
/** Sets the minimum value of the spin box. */
void setMinValue(int val);
/** Sets the maximum value of the spin box. */
void setMaxValue(int val);
/** Sets the minimum and maximum values of the spin box. */
void setRange(int minValue, int maxValue) { setMinValue(minValue); setMaxValue(maxValue); }
/** Returns the specified value clamped to the range of the spin box. */
int bound(int val) const;
/** Returns the unshifted step increment, i.e. the amount by which the spin box value
* changes when a spin button is clicked without the shift key being pressed.
*/
int lineStep() const { return mLineStep; }
/** Sets the unshifted step increment, i.e. the amount by which the spin box value
* changes when a spin button is clicked without the shift key being pressed.
*/
void setLineStep(int step);
/** Returns the shifted step increment, i.e. the amount by which the spin box value
* changes when a spin button is clicked while the shift key is pressed.
*/
int lineShiftStep() const { return mLineShiftStep; }
/** Sets the shifted step increment, i.e. the amount by which the spin box value
* changes when a spin button is clicked while the shift key is pressed.
*/
void setLineShiftStep(int step);
public slots:
/** Increments the value of the spin box by the unshifted step increment. */
virtual void stepUp();
/** Decrements the value of the spin box by the unshifted step increment. */
virtual void stepDown();
signals:
/** Signal emitted when the spin box's value is stepped (by the shifted or unshifted increment).
* @param step The requested step in the spin box's value. Note that the actual change in value
* may have been less than this.
*/
void stepped(int step);
protected:
/** A virtual method called whenever the value of the spin box has changed. */
virtual void valueChange();
/** Returns the initial adjustment to the value for a shift step up or down.
* The default is to step up or down to the nearest multiple of the shift
* increment, so the adjustment returned is for stepping up the decrement
* required to round down to a multiple of the shift increment <= current value,
* or for stepping down the increment required to round up to a multiple of the
* shift increment >= current value.
* This method's caller then adjusts the resultant value if necessary to cater
* for the widget's minimum/maximum value, and wrapping.
* This should really be a static method, but it needs to be virtual...
*/
virtual int shiftStepAdjustment(int oldValue, int shiftStep);
/** Receives events destined for the spin widget or for the edit field. */
virtual bool eventFilter(TQObject*, TQEvent*);
/** Updates the contents of the embedded TQLineEdit to reflect the current value
* using mapValueToText(). Also enables/disables the up/down push buttons accordingly.
*/
virtual void updateDisplay();
private slots:
void textEdited();
private:
void init();
void addValue(int change, bool current);
int whichButton(const TQPoint&);
bool setShiftStepping(bool, int currentButton);
enum { NO_BUTTON, UP, DOWN };
int mMinValue;
int mMaxValue;
int mLineStep; // step when spin arrows are pressed
int mLineShiftStep; // step when spin arrows are pressed with shift key
int mCurrentButton; // current spin widget button
bool mShiftMouse; // true while left button is being held down with shift key
bool mShiftMinBound; // true if a temporary minimum bound has been set during shift stepping
bool mShiftMaxBound; // true if a temporary maximum bound has been set during shift stepping
bool mSelectOnStep; // select the editor text whenever spin buttons are clicked (default)
bool mReadOnly; // value cannot be changed
bool mSuppressSignals;
bool mEdited; // text field has been edited
};
#endif // SPINBOX_H
|
