From b0024829ee4e4765f39f500f15d174683469fd62 Mon Sep 17 00:00:00 2001
From: 0xFEEDC0DE64 <daniel@brunner.ninja>
Date: Sat, 17 Dec 2022 16:46:14 +0100
Subject: [PATCH] Added learn button to samples

---
 sampleswidget.cpp |  6 +++++-
 samplewidget.cpp  | 31 +++++++++++++++++++++++++++++++
 samplewidget.h    |  8 ++++++++
 samplewidget.ui   |  7 +++++++
 4 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/sampleswidget.cpp b/sampleswidget.cpp
index 9d04f80..bf18b9b 100755
--- a/sampleswidget.cpp
+++ b/sampleswidget.cpp
@@ -65,7 +65,11 @@ void SamplesWidget::messageReceived(const midi::MidiMessage &message)
 
     for (SampleWidget &widget : getWidgets())
     {
-        if (widget.channel() == message.channel && widget.note() == message.note)
+        if (widget.isLearning())
+        {
+            widget.learn(message.channel, message.note);
+        }
+        else if (widget.channel() == message.channel && widget.note() == message.note)
         {
             if (message.cmd == midi::Command::NoteOff || (message.cmd == midi::Command::NoteOn && message.velocity == 0))
                 widget.released();
diff --git a/samplewidget.cpp b/samplewidget.cpp
index 86f6f07..52d92d9 100755
--- a/samplewidget.cpp
+++ b/samplewidget.cpp
@@ -30,6 +30,7 @@ SampleWidget::SampleWidget(QWidget *parent) :
 
     connect(m_ui->pushButton, &QAbstractButton::pressed, this, [this](){ pressed(127); });
     connect(m_ui->pushButton, &QAbstractButton::released, this, &SampleWidget::released);
+    connect(m_ui->toolButtonLearn, &QAbstractButton::pressed, this, &SampleWidget::learnPressed);
 
     updateStatus();
 }
@@ -158,6 +159,14 @@ void SampleWidget::writeSamples(frame_t *begin, frame_t *end)
     m_player.writeSamples(begin, end);
 }
 
+void SampleWidget::learn(quint8 channel, quint8 note)
+{
+    setChannel(channel);
+    setNote(note);
+    if (m_learning)
+        learnPressed();
+}
+
 void SampleWidget::updateStatus()
 {
     QPalette pal;
@@ -224,6 +233,28 @@ void SampleWidget::decodingFinished(const QAudioBuffer &buffer)
     updateStatus();
 }
 
+void SampleWidget::learnPressed()
+{
+    auto palette = m_ui->toolButtonLearn->palette();
+
+    if (m_learning)
+    {
+        palette.setColor(m_ui->toolButtonLearn->backgroundRole(), m_oldColor);
+        palette.setBrush(m_ui->toolButtonLearn->backgroundRole(), m_oldBrush);
+    }
+    else
+    {
+        m_oldColor = palette.color(m_ui->toolButtonLearn->backgroundRole());
+        m_oldBrush = palette.brush(m_ui->toolButtonLearn->backgroundRole());
+        palette.setColor(m_ui->toolButtonLearn->backgroundRole(), Qt::red);
+        palette.setBrush(m_ui->toolButtonLearn->backgroundRole(), Qt::red);
+    }
+    m_ui->toolButtonLearn->setPalette(palette);
+
+    m_learning = !m_learning;
+    qDebug() << m_learning;
+}
+
 void SampleWidget::startRequest()
 {
     if (m_networkAccessManager && m_file->filename)
diff --git a/samplewidget.h b/samplewidget.h
index d458a98..9f7470e 100755
--- a/samplewidget.h
+++ b/samplewidget.h
@@ -48,6 +48,9 @@ public:
 
     void writeSamples(frame_t *begin, frame_t *end);
 
+    bool isLearning() const { return m_learning; }
+    void learn(quint8 channel, quint8 note);
+
 signals:
     void chokeTriggered(int choke);
     void startDecoding(const std::shared_ptr<QIODevice> &device);
@@ -56,6 +59,7 @@ private slots:
     void updateStatus();
     void requestFinished();
     void decodingFinished(const QAudioBuffer &buffer);
+    void learnPressed();
 
 private:
     void startRequest();
@@ -72,4 +76,8 @@ private:
     std::optional<presets::File> m_file;
 
     QNetworkAccessManager *m_networkAccessManager{};
+
+    bool m_learning{};
+    QColor m_oldColor;
+    QBrush m_oldBrush;
 };
diff --git a/samplewidget.ui b/samplewidget.ui
index 6472c87..28f4140 100755
--- a/samplewidget.ui
+++ b/samplewidget.ui
@@ -100,6 +100,13 @@
      <item>
       <widget class="QSpinBox" name="noteSpinBox"/>
      </item>
+     <item>
+      <widget class="QToolButton" name="toolButtonLearn">
+       <property name="text">
+        <string>...</string>
+       </property>
+      </widget>
+     </item>
     </layout>
    </item>
    <item>