Outline ![]()
Files ![]()
loading...
CodeScope![]()
STM32 Libraries and Samples![]()
TouchGFX![]()
Gui/gui/src/home_automation_screen/TemperatureSlider.cpp
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
/**
******************************************************************************
* This file is part of the TouchGFX 4.10.0 distribution.
*
* @attention
*
* Copyright (c) 2018 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
#include <gui/home_automation_screen/TemperatureSlider.hpp>
TemperatureSlider::TemperatureSlider() :
valueChangedCallback(0)
{
setTouchable(true);
slider.setBitmap(Bitmap(BITMAP_TEMPERATURE_SLIDER_KNOP_ID));
slider.setXY(0, 0);
sliderRadius = slider.getWidth() / 2;
sliderBackground.setBitmap(Bitmap(BITMAP_TEMPERATURE_SLIDER_ID));
sliderBackground.setXY(0, sliderRadius - sliderBackground.getHeight() / 2);
// Set the containers dimensions
setWidth(sliderBackground.getWidth());
setHeight(slider.getHeight());
add(sliderBackground);
add(slider);
setSlider(30, true);
}
TemperatureSlider::~TemperatureSlider()
{
}
void TemperatureSlider::handleClickEvent(const ClickEvent& evt)
{
if (evt.getType() == ClickEvent::PRESSED)
{
setSlider(evt.getX(), true);
}
}
void TemperatureSlider::handleDragEvent(const DragEvent& evt)
{
setSlider(evt.getNewX(), true);
}
void TemperatureSlider::setLimits(int16_t min, int16_t max)
{
assert(min < max);
minLimit = min;
maxLimit = max;
}
void TemperatureSlider::setValue(int16_t value)
{
// Round value to the limits if necessary
value = (value < minLimit) ? minLimit : value;
value = (value > maxLimit) ? maxLimit : value;
float placementPercentage = ((float)(value - minLimit) / (maxLimit - minLimit));
int16_t interval = getWidth() - sliderRadius - sliderRadius;
setSlider(sliderRadius + (int16_t)(placementPercentage * interval), false);
}
void TemperatureSlider::setSlider(int16_t x, bool callback)
{
// Cut off x values outside the slider area
if (x < sliderRadius)
{
x = sliderRadius;
}
else if (x > getWidth() - sliderRadius)
{
x = getWidth() - sliderRadius;
}
invalidate();
slider.moveTo(x - sliderRadius, 0);
invalidate();
// Communicate the new value if a listener is registered
if (valueChangedCallback && callback)
{
valueChangedCallback->execute(getValue());
}
}
int16_t TemperatureSlider::getValue()
{
int16_t interval = getWidth() - sliderRadius - sliderRadius;
float placementPercentage = (float) slider.getX() / interval;
return minLimit + ((int16_t)(placementPercentage * (maxLimit - minLimit)));
}
void TemperatureSlider::setAlpha(uint8_t alpha)
{
sliderBackground.setAlpha(alpha);
slider.setAlpha(alpha);
sliderBackground.invalidate();
slider.invalidate();
}