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
|
#include "waveform/renderers/allshader/waveformrendererendoftrack.h"
#include <QDomNode>
#include <memory>
#include "control/controlobject.h"
#include "control/controlproxy.h"
#include "util/timer.h"
#include "waveform/waveformwidgetfactory.h"
#include "waveform/widgets/allshader/waveformwidget.h"
#include "widget/wskincolor.h"
#include "widget/wwidget.h"
namespace {
constexpr int kBlinkingPeriodMillis = 1000;
constexpr float positionArray[] = {-1.f, -1.f, 1.f, -1.f, -1.f, 1.f, 1.f, 1.f};
constexpr float verticalGradientArray[] = {1.f, 1.f, -1.f, -1.f};
constexpr float horizontalGradientArray[] = {-1.f, 1.f, -1.f, 1.f};
} // anonymous namespace
using namespace allshader;
WaveformRendererEndOfTrack::WaveformRendererEndOfTrack(
WaveformWidgetRenderer* waveformWidget)
: WaveformRenderer(waveformWidget),
m_pEndOfTrackControl(nullptr),
m_pTimeRemainingControl(nullptr) {
}
WaveformRendererEndOfTrack::~WaveformRendererEndOfTrack() {
}
bool WaveformRendererEndOfTrack::init() {
m_timer.restart();
m_pEndOfTrackControl.reset(new ControlProxy(
m_waveformRenderer->getGroup(), "end_of_track"));
m_pTimeRemainingControl.reset(new ControlProxy(
m_waveformRenderer->getGroup(), "time_remaining"));
return true;
}
void WaveformRendererEndOfTrack::setup(const QDomNode& node, const SkinContext& context) {
m_color = QColor(200, 25, 20);
const QString endOfTrackColorName = context.selectString(node, "EndOfTrackColor");
if (!endOfTrackColorName.isNull()) {
m_color.setNamedColor(endOfTrackColorName);
m_color = WSkinColor::getCorrectColor(m_color);
}
}
void WaveformRendererEndOfTrack::initializeGL() {
WaveformRenderer::initializeGL();
m_shader.init();
}
void WaveformRendererEndOfTrack::fillWithGradient(QColor color) {
const int colorLocation = m_shader.uniformLocation("color");
const int positionLocation = m_shader.attributeLocation("position");
const int gradientLocation = m_shader.attributeLocation("gradient");
m_shader.bind();
m_shader.enableAttributeArray(positionLocation);
m_shader.enableAttributeArray(gradientLocation);
m_shader.setUniformValue(colorLocation, color);
m_shader.setAttributeArray(
positionLocation, GL_FLOAT, positionArray, 2);
m_shader.setAttributeArray(gradientLocation,
GL_FLOAT,
m_waveformRenderer->getOrientation() == Qt::Vertical
? verticalGradientArray
: horizontalGradientArray,
1);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
m_shader.disableAttributeArray(positionLocation);
m_shader.disableAttributeArray(gradientLocation);
m_shader.release();
}
void WaveformRendererEndOfTrack::paintGL() {
if (!m_pEndOfTrackControl->toBool()) {
return;
}
const int elapsed = m_timer.elapsed().toIntegerMillis() % kBlinkingPeriodMillis;
const double blinkIntensity = (double)(2 * abs(elapsed - kBlinkingPeriodMillis / 2)) /
kBlinkingPeriodMillis;
const double remainingTime = m_pTimeRemainingControl->get();
const double remainingTimeTriggerSeconds =
WaveformWidgetFactory::instance()->getEndOfTrackWarningTime();
const double criticalIntensity = (remainingTimeTriggerSeconds - remainingTime) /
remainingTimeTriggerSeconds;
const double alpha = criticalIntensity * blinkIntensity;
if (alpha != 0.0) {
QColor color = m_color;
color.setAlphaF(static_cast<float>(alpha));
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
fillWithGradient(color);
}
}
|
