1 /* DialValue.cpp
2 * Copyright (C) 2018, 2019 Sven Jähnichen
3 *
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <https://www.gnu.org/licenses/>.
16 */
17
18 #include "DialValue.hpp"
19 #include "../BUtilities/to_string.hpp"
20 #include "../BUtilities/stof.hpp"
21
22 namespace BWidgets
23 {
24
DialValue()25 DialValue::DialValue () :
26 DialValue
27 (
28 0.0, 0.0, BWIDGETS_DEFAULT_DIALVALUE_WIDTH, BWIDGETS_DEFAULT_DIALVALUE_HEIGHT,
29 "dialvalue",
30 BWIDGETS_DEFAULT_VALUE, BWIDGETS_DEFAULT_RANGE_MIN, BWIDGETS_DEFAULT_RANGE_MAX, BWIDGETS_DEFAULT_RANGE_STEP,
31 BWIDGETS_DEFAULT_VALUE_FORMAT
32 ) {}
33
DialValue(const double x,const double y,const double width,const double height,const std::string & name,const double value,const double min,const double max,const double step,const std::string & valueFormat)34 DialValue::DialValue (const double x, const double y, const double width, const double height, const std::string& name,
35 const double value, const double min, const double max, const double step,
36 const std::string& valueFormat) :
37 Dial (x, y, width, height, name, value, min, max, step),
38 valueDisplay(0, 0.75 * height, width, 0.25 * height, name),
39 valFormat (valueFormat)
40 {
41 valueDisplay.setText (BUtilities::to_string (value, valueFormat));
42 valueDisplay.setScrollable (false);
43 valueDisplay.setEditable (true);
44 valueDisplay.setCallbackFunction(BEvents::EventType::POINTER_DRAG_EVENT, displayDraggedCallback);
45 valueDisplay.setCallbackFunction(BEvents::EventType::MESSAGE_EVENT, displayMessageCallback);
46 add (valueDisplay);
47 }
48
DialValue(const DialValue & that)49 DialValue::DialValue (const DialValue& that) :
50 Dial (that), valueDisplay (that.valueDisplay), valFormat (that.valFormat)
51 {
52 add (valueDisplay);
53 }
54
~DialValue()55 DialValue::~DialValue () {}
56
operator =(const DialValue & that)57 DialValue& DialValue::operator= (const DialValue& that)
58 {
59 release (&valueDisplay);
60 valFormat = that.valFormat;
61 Dial::operator= (that);
62 valueDisplay = that.valueDisplay;
63 add (valueDisplay);
64
65 return *this;
66 }
67
clone() const68 Widget* DialValue::clone () const {return new DialValue (*this);}
69
setValue(const double val)70 void DialValue::setValue (const double val)
71 {
72 Dial::setValue (val);
73 valueDisplay.setText(BUtilities::to_string (value, valFormat));
74 }
75
setValueFormat(const std::string & valueFormat)76 void DialValue::setValueFormat (const std::string& valueFormat)
77 {
78 valFormat = valueFormat;
79 update ();
80 }
81
getValueFormat() const82 std::string DialValue::getValueFormat () const {return valFormat;}
83
getDisplayLabel()84 Label* DialValue::getDisplayLabel () {return &valueDisplay;}
85
update()86 void DialValue::update ()
87 {
88 Dial::update();
89
90 // Update display
91 valueDisplay.moveTo (dialCenter.x - dialRadius, dialCenter.y + 0.7 * dialRadius);
92 valueDisplay.setWidth (2 * dialRadius);
93 valueDisplay.setHeight (0.5 * dialRadius);
94 if (valueDisplay.getFont ()->getFontSize () != 0.4 * dialRadius)
95 {
96 valueDisplay.getFont ()->setFontSize (0.4 * dialRadius);
97 valueDisplay.update ();
98 }
99 valueDisplay.setText (BUtilities::to_string (value, valFormat));
100
101 }
102
applyTheme(BStyles::Theme & theme)103 void DialValue::applyTheme (BStyles::Theme& theme) {applyTheme (theme, name_);}
applyTheme(BStyles::Theme & theme,const std::string & name)104 void DialValue::applyTheme (BStyles::Theme& theme, const std::string& name)
105 {
106 Dial::applyTheme (theme, name);
107 valueDisplay.applyTheme (theme, name);
108 update ();
109 }
110
updateCoords()111 void DialValue::updateCoords ()
112 {
113 double w = getEffectiveWidth ();
114 double h = getEffectiveHeight ();
115 dialRadius = (w < h / 1.2 ? w / 2 : h / 2.4);
116 dialCenter.x = getWidth () / 2;
117 dialCenter.y = getHeight () / 2 - 0.2 * dialRadius;
118 }
119
displayDraggedCallback(BEvents::Event * event)120 void DialValue::displayDraggedCallback (BEvents::Event* event)
121 {
122 if (event && event->getWidget())
123 {
124 BWidgets::Label* l = (BWidgets::Label*)event->getWidget();
125 DialValue* d = (DialValue*)l->getParent();
126 if (d && (!l->getEditMode())) d->DialValue::onPointerDragged ((BEvents::PointerEvent*)event);
127 }
128 }
129
displayMessageCallback(BEvents::Event * event)130 void DialValue::displayMessageCallback (BEvents::Event* event)
131 {
132 if (event && event->getWidget())
133 {
134 BWidgets::Label* l = (BWidgets::Label*)event->getWidget();
135 DialValue* d = (DialValue*)l->getParent();
136 if (d)
137 {
138 double val;
139 try {val = BUtilities::stof (l->getText());}
140 catch (std::invalid_argument &ia)
141 {
142 fprintf (stderr, "%s\n", ia.what());
143 d->update();
144 return;
145 }
146
147 d->setValue (val);
148 d->update();
149 }
150 }
151 }
152
153 }
154