1 /* VSlider.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 "VSlider.hpp"
19 #include "../BUtilities/to_string.hpp"
20
21 namespace BWidgets
22 {
VSlider()23 VSlider::VSlider () : VSlider (0.0, 0.0, BWIDGETS_DEFAULT_VSLIDER_WIDTH, BWIDGETS_DEFAULT_VSLIDER_HEIGHT, "vslider",
24 BWIDGETS_DEFAULT_VALUE, BWIDGETS_DEFAULT_RANGE_MIN, BWIDGETS_DEFAULT_RANGE_MAX, BWIDGETS_DEFAULT_RANGE_STEP) {}
25
VSlider(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)26 VSlider::VSlider (const double x, const double y, const double width, const double height, const std::string& name,
27 const double value, const double min, const double max, const double step) :
28 VScale (x, y, width, height, name, value, min, max, step),
29 Focusable (std::chrono::milliseconds (BWIDGETS_DEFAULT_FOCUS_IN_MS),
30 std::chrono::milliseconds (BWIDGETS_DEFAULT_FOCUS_OUT_MS)),
31 knob (0, 0, 0, 0, BWIDGETS_DEFAULT_KNOB_DEPTH, name),
32 focusLabel(0 ,0, 40, 20, name_ + BWIDGETS_DEFAULT_FOCUS_NAME, ""),
33 knobRadius (0), knobPosition ()
34 {
35 setFocusable (true);
36
37 knob.setClickable (false);
38 knob.setDraggable (false);
39 knob.setScrollable (false);
40 knob.setFocusable (false);
41 add (knob);
42
43 std::string valstr = BUtilities::to_string (getValue());
44 focusLabel.setText (valstr);
45 focusLabel.setStacking (STACKING_OVERSIZE);
46 focusLabel.resize ();
47 focusLabel.hide ();
48 add (focusLabel);
49 }
50
VSlider(const VSlider & that)51 VSlider::VSlider (const VSlider& that) :
52 VScale (that), Focusable (that),
53 knob (that.knob), focusLabel (that.focusLabel),
54 knobRadius (that.knobRadius), knobPosition (that.knobPosition)
55 {
56 add (knob);
57 focusLabel.hide();
58 add (focusLabel);
59 }
60
operator =(const VSlider & that)61 VSlider& VSlider::operator= (const VSlider& that)
62 {
63 release (&knob);
64 release (&focusLabel);
65
66 knob = that.knob;
67 focusLabel = that.focusLabel;
68 focusLabel.hide();
69 knobRadius = that.knobRadius;
70 knobPosition = that.knobPosition;
71 RangeWidget::operator= (that);
72 Focusable::operator= (that);
73
74 add (knob);
75 add (focusLabel);
76
77 return *this;
78 }
79
clone() const80 Widget* VSlider::clone () const {return new VSlider (*this);}
81
setValue(const double val)82 void VSlider::setValue (const double val)
83 {
84 RangeWidget::setValue (val);
85 std::string valstr = BUtilities::to_string (value);
86 focusLabel.setText(valstr);
87 focusLabel.resize ();
88 }
89
update()90 void VSlider::update ()
91 {
92 VScale::update ();
93
94 // Update Knob
95 knob.moveTo (knobPosition.x - knobRadius, knobPosition.y - knobRadius);
96 knob.resize (2 * knobRadius, 2 * knobRadius);
97
98 // Update focusLabel
99 focusLabel.resize ();
100 }
101
applyTheme(BStyles::Theme & theme)102 void VSlider::applyTheme (BStyles::Theme& theme) {applyTheme (theme, name_);}
103
applyTheme(BStyles::Theme & theme,const std::string & name)104 void VSlider::applyTheme (BStyles::Theme& theme, const std::string& name)
105 {
106 VScale::applyTheme (theme, name);
107 knob.applyTheme (theme, name);
108 focusLabel.applyTheme (theme, name + BWIDGETS_DEFAULT_FOCUS_NAME);
109 }
110
onFocusIn(BEvents::FocusEvent * event)111 void VSlider::onFocusIn (BEvents::FocusEvent* event)
112 {
113 if (event && event->getWidget())
114 {
115 BUtilities::Point pos = event->getPosition();
116 focusLabel.moveTo (pos.x - 0.5 * focusLabel.getWidth(), pos.y - focusLabel.getHeight());
117 focusLabel.show();
118 }
119 Widget::onFocusIn (event);
120 }
onFocusOut(BEvents::FocusEvent * event)121 void VSlider::onFocusOut (BEvents::FocusEvent* event)
122 {
123 if (event && event->getWidget()) focusLabel.hide();
124 Widget::onFocusOut (event);
125 }
126
updateCoords()127 void VSlider::updateCoords ()
128 {
129 double w = getEffectiveWidth ();
130 double h = getEffectiveHeight ();
131
132 knobRadius = (w < h ? w / 2 : h / 2);
133 scaleArea = BUtilities::RectArea
134 (
135 getXOffset () + w / 2 - knobRadius / 2,
136 getYOffset () + knobRadius,
137 knobRadius,
138 h - 2 * knobRadius
139 );
140 scaleYValue = scaleArea.getY() + (1 - getRelativeValue ()) * scaleArea.getHeight();
141 knobPosition = BUtilities::Point
142 (
143 scaleArea.getX() + scaleArea.getWidth() / 2,
144 scaleYValue
145 );
146 }
147 }
148