#!/usr/bin/env python3 # -*- coding: utf-8 -*- # Scalable Dial, a custom Qt widget # Copyright (C) 2011-2022 Filipe Coelho # # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License as # published by the Free Software Foundation; either version 2 of # the License, or any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # For a full copy of the GNU General Public License see the doc/GPL.txt file. # --------------------------------------------------------------------------------------------------------------------- # Imports (Global) from math import cos, floor, pi, sin from PyQt5.QtCore import pyqtSlot, Qt, QEvent, QPointF, QRectF, QTimer, QSize from PyQt5.QtGui import QColor, QConicalGradient, QFontMetrics, QPainterPath, QPen, QPixmap from PyQt5.QtSvg import QSvgWidget from .commondial import CommonDial # --------------------------------------------------------------------------------------------------------------------- # Widget Class class ScalableDial(CommonDial): def __init__(self, parent, index=0): CommonDial.__init__(self, parent, index) self.fImage = QSvgWidget(":/scalable/dial_03.svg") self.fImageNum = "01" if self.fImage.sizeHint().width() > self.fImage.sizeHint().height(): self.fImageOrientation = self.HORIZONTAL else: self.fImageOrientation = self.VERTICAL self.updateSizes() def getBaseSize(self): return self.fImageBaseSize def updateSizes(self): if isinstance(self.fImage, QPixmap): self.fImageWidth = self.fImage.width() self.fImageHeight = self.fImage.height() else: self.fImageWidth = self.fImage.sizeHint().width() self.fImageHeight = self.fImage.sizeHint().height() if self.fImageWidth < 1: self.fImageWidth = 1 if self.fImageHeight < 1: self.fImageHeight = 1 if self.fImageOrientation == self.HORIZONTAL: self.fImageBaseSize = self.fImageHeight self.fImageLayersCount = self.fImageWidth / self.fImageHeight else: self.fImageBaseSize = self.fImageWidth self.fImageLayersCount = self.fImageHeight / self.fImageWidth self.setMinimumSize(self.fImageBaseSize, self.fImageBaseSize + self.fLabelHeight + 5) self.setMaximumSize(self.fImageBaseSize, self.fImageBaseSize + self.fLabelHeight + 5) if not self.fLabel: self.fLabelHeight = 0 self.fLabelWidth = 0 return self.fLabelWidth = QFontMetrics(self.fLabelFont).width(self.fLabel) self.fLabelHeight = QFontMetrics(self.fLabelFont).height() self.fLabelPos.setX(float(self.fImageBaseSize)/2.0 - float(self.fLabelWidth)/2.0) if self.fImageNum in ("01", "02", "07", "08", "09", "10"): self.fLabelPos.setY(self.fImageBaseSize + self.fLabelHeight) elif self.fImageNum in ("11",): self.fLabelPos.setY(self.fImageBaseSize + self.fLabelHeight*2/3) else: self.fLabelPos.setY(self.fImageBaseSize + self.fLabelHeight/2) self.fLabelGradient.setStart(0, float(self.fImageBaseSize)/2.0) self.fLabelGradient.setFinalStop(0, self.fImageBaseSize + self.fLabelHeight + 5) self.fLabelGradientRect = QRectF(float(self.fImageBaseSize)/8.0, float(self.fImageBaseSize)/2.0, float(self.fImageBaseSize*3)/4.0, self.fImageBaseSize+self.fLabelHeight+5) def setImage(self, imageId): self.fImageNum = "%02i" % imageId if imageId in (2,6,7,8,9,10,11,12,13): img = ":/bitmaps/dial_%s%s.png" % (self.fImageNum, "" if self.isEnabled() else "d") else: img = ":/scalable/dial_%s%s.svg" % (self.fImageNum, "" if self.isEnabled() else "d") if img.endswith(".png"): if not isinstance(self.fImage, QPixmap): self.fImage = QPixmap() else: if not isinstance(self.fImage, QSvgWidget): self.fImage = QSvgWidget() self.fImage.load(img) if self.fImage.width() > self.fImage.height(): self.fImageOrientation = self.HORIZONTAL else: self.fImageOrientation = self.VERTICAL # special svgs if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_NULL: # reserved for carla-wet, carla-vol, carla-pan and color if self.fImageNum == "03": self.fCustomPaintMode = self.CUSTOM_PAINT_MODE_COLOR # reserved for carla-L and carla-R elif self.fImageNum == "04": self.fCustomPaintMode = self.CUSTOM_PAINT_MODE_CARLA_L # reserved for zita elif self.fImageNum == "06": self.fCustomPaintMode = self.CUSTOM_PAINT_MODE_ZITA self.updateSizes() self.update() @pyqtSlot() def slot_updateImage(self): self.setImage(int(self.fImageNum)) def minimumSizeHint(self): return QSize(self.fImageBaseSize, self.fImageBaseSize) def sizeHint(self): return QSize(self.fImageBaseSize, self.fImageBaseSize) def changeEvent(self, event): CommonDial.changeEvent(self, event) # Force svg update if enabled state changes if event.type() == QEvent.EnabledChange: self.slot_updateImage() def paintDial(self, painter): if self.isEnabled(): normValue = float(self.fRealValue - self.fMinimum) / float(self.fMaximum - self.fMinimum) curLayer = int((self.fImageLayersCount - 1) * normValue) if self.fImageOrientation == self.HORIZONTAL: xpos = self.fImageBaseSize * curLayer ypos = 0.0 else: xpos = 0.0 ypos = self.fImageBaseSize * curLayer source = QRectF(xpos, ypos, self.fImageBaseSize, self.fImageBaseSize) if isinstance(self.fImage, QPixmap): target = QRectF(0.0, 0.0, self.fImageBaseSize, self.fImageBaseSize) painter.drawPixmap(target, self.fImage, source) else: self.fImage.renderer().render(painter, source) # Custom knobs (Dry/Wet and Volume) if self.fCustomPaintMode in (self.CUSTOM_PAINT_MODE_CARLA_WET, self.CUSTOM_PAINT_MODE_CARLA_VOL): # knob color colorGreen = QColor(0x5D, 0xE7, 0x3D).lighter(100 + self.fHoverStep*6) colorBlue = QColor(0x3E, 0xB8, 0xBE).lighter(100 + self.fHoverStep*6) # draw small circle ballRect = QRectF(8.0, 8.0, 15.0, 15.0) ballPath = QPainterPath() ballPath.addEllipse(ballRect) #painter.drawRect(ballRect) tmpValue = (0.375 + 0.75*normValue) ballValue = tmpValue - floor(tmpValue) ballPoint = ballPath.pointAtPercent(ballValue) # draw arc startAngle = 218*16 spanAngle = -255*16*normValue if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_CARLA_WET: painter.setBrush(colorBlue) painter.setPen(QPen(colorBlue, 0)) painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2)) gradient = QConicalGradient(15.5, 15.5, -45) gradient.setColorAt(0.0, colorBlue) gradient.setColorAt(0.125, colorBlue) gradient.setColorAt(0.625, colorGreen) gradient.setColorAt(0.75, colorGreen) gradient.setColorAt(0.76, colorGreen) gradient.setColorAt(1.0, colorGreen) painter.setBrush(gradient) painter.setPen(QPen(gradient, 3)) else: painter.setBrush(colorBlue) painter.setPen(QPen(colorBlue, 0)) painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2)) painter.setBrush(colorBlue) painter.setPen(QPen(colorBlue, 3)) painter.drawArc(QRectF(4.0, 4.0, 26.0, 26.0), int(startAngle), int(spanAngle)) # Custom knobs (L and R) elif self.fCustomPaintMode in (self.CUSTOM_PAINT_MODE_CARLA_L, self.CUSTOM_PAINT_MODE_CARLA_R): # knob color color = QColor(0xAD, 0xD5, 0x48).lighter(100 + self.fHoverStep*6) # draw small circle ballRect = QRectF(7.0, 8.0, 11.0, 12.0) ballPath = QPainterPath() ballPath.addEllipse(ballRect) #painter.drawRect(ballRect) tmpValue = (0.375 + 0.75*normValue) ballValue = tmpValue - floor(tmpValue) ballPoint = ballPath.pointAtPercent(ballValue) painter.setBrush(color) painter.setPen(QPen(color, 0)) painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.0, 2.0)) # draw arc if self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_CARLA_L: startAngle = 218*16 spanAngle = -255*16*normValue else: startAngle = 322.0*16 spanAngle = 255.0*16*(1.0-normValue) painter.setPen(QPen(color, 2.5)) painter.drawArc(QRectF(3.5, 3.5, 22.0, 22.0), int(startAngle), int(spanAngle)) # Custom knobs (Color) elif self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_COLOR: # knob color color = self.fCustomPaintColor.lighter(100 + self.fHoverStep*6) # draw small circle ballRect = QRectF(8.0, 8.0, 15.0, 15.0) ballPath = QPainterPath() ballPath.addEllipse(ballRect) tmpValue = (0.375 + 0.75*normValue) ballValue = tmpValue - floor(tmpValue) ballPoint = ballPath.pointAtPercent(ballValue) # draw arc startAngle = 218*16 spanAngle = -255*16*normValue painter.setBrush(color) painter.setPen(QPen(color, 0)) painter.drawEllipse(QRectF(ballPoint.x(), ballPoint.y(), 2.2, 2.2)) painter.setBrush(color) painter.setPen(QPen(color, 3)) painter.drawArc(QRectF(4.0, 4.8, 26.0, 26.0), int(startAngle), int(spanAngle)) # Custom knobs (Zita) elif self.fCustomPaintMode == self.CUSTOM_PAINT_MODE_ZITA: a = normValue * pi * 1.5 - 2.35 r = 10.0 x = 10.5 y = 10.5 x += r * sin(a) y -= r * cos(a) painter.setBrush(Qt.black) painter.setPen(QPen(Qt.black, 2)) painter.drawLine(QPointF(11.0, 11.0), QPointF(x, y)) # Custom knobs else: painter.restore() return if self.HOVER_MIN < self.fHoverStep < self.HOVER_MAX: self.fHoverStep += 1 if self.fIsHovered else -1 QTimer.singleShot(20, self.update) else: # isEnabled() target = QRectF(0.0, 0.0, self.fImageBaseSize, self.fImageBaseSize) if isinstance(self.fImage, QPixmap): painter.drawPixmap(target, self.fImage, target) else: self.fImage.renderer().render(painter, target) # ---------------------------------------------------------------------------------------------------------------------