arppegiator/gui/simulator_display.py

"""
Simulator Display GUI

Simplified visual representation showing only channel volumes.
"""

from PyQt5.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QGridLayout,
                            QLabel, QFrame, QPushButton, QSlider, QGroupBox)
from PyQt5.QtCore import Qt, QTimer, pyqtSlot
from PyQt5.QtGui import QPainter, QColor, QBrush, QPen, QFont

class SynthWidget(QFrame):
    """Individual synth display widget - simplified to show only volume"""
    
    def __init__(self, channel: int):
        super().__init__()
        self.channel = channel
        self.channel_volume_midi = 100  # 0-127 MIDI CC7 value
        
        self.setFrameStyle(QFrame.Box)
        self.setFixedSize(100, 80)
        self.setStyleSheet("""
            QFrame {
                border: 2px solid #404040;
                border-radius: 6px;
                background-color: #2a2a2a;
            }
        """)
    
    def set_channel_volume(self, volume_midi: int):
        """Set channel volume (0-127 MIDI CC7) - this is what controls brightness"""
        self.channel_volume_midi = max(0, min(127, volume_midi))
        self.update()  # Trigger repaint
    
    def paintEvent(self, event):
        """Custom paint for volume-based lighting"""
        super().paintEvent(event)
        
        painter = QPainter(self)
        painter.setRenderHint(QPainter.Antialiasing)
        
        # Calculate brightness based on MIDI volume (0-127)
        brightness_intensity = int((self.channel_volume_midi / 127.0) * 235)  # Max 235 to leave room for +20
        
        # Create color based on channel (different hues)
        hue = (self.channel - 1) * 360 / 16  # Distribute hues across spectrum
        brightness_value = max(20, min(255, brightness_intensity + 20))  # Clamp to valid range
        color = QColor.fromHsv(int(hue), 200, brightness_value)
        
        # Draw volume-based lighting effect - only show if volume is above 0
        if self.channel_volume_midi > 0:
            # Draw volume glow
            glow_rect = self.rect().adjusted(8, 8, -8, -8)
            painter.setBrush(QBrush(color))
            painter.setPen(QPen(color.lighter(120), 1))
            painter.drawRoundedRect(glow_rect, 4, 4)
        
        # Draw channel info
        painter.setPen(QPen(QColor(255, 255, 255), 1))
        painter.setFont(QFont("Arial", 11, QFont.Bold))
        
        # Channel number
        painter.drawText(10, 20, f"Ch {self.channel}")
        
        # Volume level (MIDI CC7 value)
        painter.setFont(QFont("Arial", 9))
        painter.drawText(10, 65, f"Vol: {self.channel_volume_midi}")


class SimulatorDisplay(QWidget):
    """Simplified simulator display widget"""
    
    def __init__(self, simulator, channel_manager):
        super().__init__()
        self.simulator = simulator
        self.channel_manager = channel_manager
        self.synth_widgets = {}
        self.current_synth_count = 8
        
        self.setup_ui()
        self.connect_signals()
    
    def setup_ui(self):
        """Set up the user interface"""
        layout = QVBoxLayout(self)
        
        # Title
        title = QLabel("Synth Array - Channel Volume Display")
        title.setStyleSheet("font-size: 14px; font-weight: bold; color: #ffffff; margin: 5px;")
        title.setAlignment(Qt.AlignCenter)
        layout.addWidget(title)
        
        # Synth display grid
        self.synth_grid_widget = QWidget()
        self.synth_grid_layout = QGridLayout(self.synth_grid_widget)
        self.synth_grid_layout.setSpacing(5)
        layout.addWidget(self.synth_grid_widget)
        
        # Initialize with default synth count
        self.create_synth_widgets(self.current_synth_count)
    
    def connect_signals(self):
        """Connect signals"""
        # Channel manager signals
        if hasattr(self.channel_manager, 'volume_changed'):
            self.channel_manager.volume_changed.connect(self.on_channel_volume_changed)
    
    def create_synth_widgets(self, count: int):
        """Create synth widgets for display"""
        # Clear existing widgets
        for widget in self.synth_widgets.values():
            widget.deleteLater()
        self.synth_widgets.clear()
        
        # Clear layout
        while self.synth_grid_layout.count():
            child = self.synth_grid_layout.takeAt(0)
            if child.widget():
                child.widget().deleteLater()
        
        # Create new widgets
        cols = 4  # 4 synths per row
        for i in range(count):
            channel = i + 1
            widget = SynthWidget(channel)
            
            row = i // cols
            col = i % cols
            self.synth_grid_layout.addWidget(widget, row, col)
            
            self.synth_widgets[channel] = widget
        
        self.current_synth_count = count
    
    @pyqtSlot(int)
    def set_synth_count(self, count: int):
        """Set number of synths to display"""
        if count != self.current_synth_count:
            self.create_synth_widgets(count)
    
    @pyqtSlot(int, float)
    def on_channel_volume_changed(self, channel: int, volume: float):
        """Handle channel volume change"""
        if channel in self.synth_widgets:
            self.synth_widgets[channel].set_channel_volume(volume)
    
    @pyqtSlot(int, int, int, float)
    def on_note_played(self, channel: int, note: int, velocity: int, duration: float):
        """Handle note played - we don't need special handling for this in volume mode"""
        # In the simplified version, we only care about volume, not individual notes
        pass
    
    @pyqtSlot(int, int)
    def on_midi_volume_changed(self, channel: int, volume: int):
        """Handle MIDI volume change (CC7) - channel 1-16, volume 0-127"""
        if channel in self.synth_widgets:
            self.synth_widgets[channel].set_channel_volume(volume)
    
    @pyqtSlot(int, float, float)
    @pyqtSlot(dict)
    def update_lighting(self, lighting_data: dict):
        """Update lighting based on channel volume from simulator engine"""
        for channel, brightness in lighting_data.items():
            if channel in self.synth_widgets:
                # Convert brightness (0-1) to MIDI (0-127) for display consistency
                midi_volume = int(brightness * 127)
                self.synth_widgets[channel].set_channel_volume(midi_volume)
    
    def update_channel_volumes_from_output_manager(self, output_manager):
        """Update all channel volumes from output manager"""
        for channel in range(1, self.current_synth_count + 1):
            volume = output_manager.get_channel_volume(channel) / 127.0  # Convert from MIDI to 0-1
            if channel in self.synth_widgets:
                self.synth_widgets[channel].set_channel_volume(volume)