Make our own knob
Signed-off-by: falkTX <falktx@falktx.com>
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falkTX
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570d8bc2da
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77ce5cc701
1 changed files with 182 additions and 1 deletions
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@ -21,6 +21,187 @@
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USE_NAMESPACE_DISTRHO;
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struct NanoKnob : Knob {
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static const int ringSize = 4;
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std::string displayLabel;
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std::string displayString;
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float normalizedValue = 0.0f;
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NanoKnob()
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{
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box.size = Vec(100, 100);
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}
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void drawLayer(const DrawArgs& args, int layer) override
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{
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if (layer != 1)
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return Knob::drawLayer(args, layer);
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const float w = box.size.x;
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const float h = box.size.y;
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const int knobSize = std::min(w, h - BND_WIDGET_HEIGHT * 2) - ringSize;
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const int knobStartX = w / 2 - knobSize / 2;
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const int knobStartY = BND_WIDGET_HEIGHT + ringSize;
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const int knobCenterX = knobStartX + knobSize / 2;
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const int knobCenterY = knobStartY + knobSize / 2;
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const NVGcolor testing = nvgRGBf(0.76f, 0.11f, 0.22f);
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nvgLineCap(args.vg, NVG_ROUND);
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// outer ring value
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nvgBeginPath(args.vg);
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nvgArc(args.vg,
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knobCenterX,
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knobCenterY,
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knobSize / 2 + ringSize / 2 + 1,
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nvgDegToRad(135.0f),
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nvgDegToRad(135.0f) + nvgDegToRad(270.0f * normalizedValue),
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NVG_CW);
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nvgStrokeWidth(args.vg, ringSize);
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nvgStrokeColor(args.vg, testing);
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nvgStroke(args.vg);
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// simulate color bleeding
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nvgBeginPath(args.vg);
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nvgArc(args.vg,
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knobCenterX,
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knobCenterY,
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knobSize / 2 - 3,
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nvgDegToRad(135.0f),
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nvgDegToRad(135.0f) + nvgDegToRad(270.0f * normalizedValue),
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NVG_CW);
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nvgStrokeWidth(args.vg, 5);
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nvgStrokeColor(args.vg, nvgRGBAf(testing.r, testing.g, testing.b, 0.1f));
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nvgStroke(args.vg);
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// adjusted from VCVRack's LightWidget.cpp
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if (const float halo = settings::haloBrightness)
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{
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float radius = knobSize * 0.5f;
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float oradius = radius + std::min(radius * 4.f, 15.f);
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NVGcolor icol = color::mult(nvgRGBAf(testing.r, testing.g, testing.b, 0.2f), halo);
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NVGcolor ocol = nvgRGBA(0, 0, 0, 0);
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NVGpaint paint = nvgRadialGradient(args.vg, knobCenterX, knobCenterY, radius, oradius, icol, ocol);
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nvgBeginPath(args.vg);
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nvgRect(args.vg, knobCenterX - oradius, knobCenterY - oradius, 2 * oradius, 2 * oradius);
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nvgFillPaint(args.vg, paint);
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nvgFill(args.vg);
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}
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// bottom label (value)
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bndIconLabelValue(args.vg, 0, BND_WIDGET_HEIGHT + knobSize + ringSize, w, BND_WIDGET_HEIGHT, -1,
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testing, BND_CENTER,
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BND_LABEL_FONT_SIZE, displayString.c_str(), nullptr);
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Knob::drawLayer(args, layer);
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}
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void draw(const DrawArgs& args) override
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{
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if (engine::ParamQuantity* const pq = getParamQuantity())
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normalizedValue = pq->getScaledValue();
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const float w = box.size.x;
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const float h = box.size.y;
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const int knobSize = std::min(w, h - BND_WIDGET_HEIGHT * 2) - ringSize;
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const int knobStartX = w / 2 - knobSize / 2;
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const int knobStartY = BND_WIDGET_HEIGHT + ringSize;
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const int knobCenterX = knobStartX + knobSize / 2;
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const int knobCenterY = knobStartY + knobSize / 2;
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// top label (name)
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bndIconLabelValue(args.vg, 0, 0, w, BND_WIDGET_HEIGHT, -1,
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SCHEME_WHITE, BND_CENTER,
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BND_LABEL_FONT_SIZE, displayLabel.c_str(), nullptr);
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// knob
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NVGcolor shade_top;
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NVGcolor shade_down;
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BNDwidgetState state;
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if (APP->event->getDraggedWidget() == this)
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state = BND_ACTIVE;
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else if (APP->event->getHoveredWidget() == this)
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state = BND_HOVER;
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else
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state = BND_DEFAULT;
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bndInnerColors(&shade_top, &shade_down, &bndGetTheme()->optionTheme, state, 0);
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// inner fill
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nvgBeginPath(args.vg);
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nvgCircle(args.vg, knobCenterX, knobCenterY, knobSize / 2);
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nvgFillPaint(args.vg, nvgLinearGradient(args.vg,
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knobStartX,
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knobStartY,
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knobStartX,
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knobStartY + knobSize,
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shade_top,
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shade_down));
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nvgFill(args.vg);
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// inner fill border (inner)
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nvgBeginPath(args.vg);
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nvgArc(args.vg, knobCenterX, knobCenterY, knobSize / 2 - 1, nvgDegToRad(0.0f), nvgDegToRad(360.0f), NVG_CCW);
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nvgClosePath(args.vg);
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nvgStrokeWidth(args.vg, 1);
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nvgStrokeColor(args.vg, nvgRGBAf(0.5f, 0.5f, 0.5f, 0.4f));
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nvgStroke(args.vg);
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// inner fill border (outer)
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nvgBeginPath(args.vg);
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nvgArc(args.vg, knobCenterX, knobCenterY, knobSize / 2, nvgDegToRad(0.0f), nvgDegToRad(360.0f), NVG_CCW);
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nvgClosePath(args.vg);
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nvgStrokeWidth(args.vg, 1);
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nvgStrokeColor(args.vg, nvgRGBAf(0.0f, 0.0f, 0.0f, 0.4f));
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nvgStroke(args.vg);
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nvgLineCap(args.vg, NVG_ROUND);
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// line indicator
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nvgStrokeWidth(args.vg, 2);
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nvgSave(args.vg);
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nvgTranslate(args.vg, knobCenterX, knobCenterY);
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nvgRotate(args.vg, nvgDegToRad(45.0f) + normalizedValue * nvgDegToRad(270.0f));
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nvgBeginPath(args.vg);
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nvgRoundedRect(args.vg, -2, knobSize / 2 - 9, 2, 6, 1);
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nvgClosePath(args.vg);
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nvgFillColor(args.vg, nvgRGBf(1.0f, 1.0f, 1.0f));
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nvgFill(args.vg);
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nvgRestore(args.vg);
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// outer ring background
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nvgBeginPath(args.vg);
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nvgArc(args.vg,
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knobCenterX,
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knobCenterY,
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knobSize / 2 + ringSize / 2 + 1,
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nvgDegToRad(135.0f),
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nvgDegToRad(45.0f),
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NVG_CW);
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nvgStrokeWidth(args.vg, ringSize);
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nvgStrokeColor(args.vg, nvgRGBf(0.5f, 0.5f, 0.5f));
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nvgStroke(args.vg);
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Knob::draw(args);
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}
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void onChange(const ChangeEvent&) override
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{
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engine::ParamQuantity* const pq = getParamQuantity();
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DISTRHO_SAFE_ASSERT_RETURN(pq != nullptr,);
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displayLabel = pq->getLabel();
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displayString = pq->getDisplayValueString() + pq->getUnit();
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}
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};
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template<int numIO>
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struct HostAudio : Module {
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CardinalPluginContext* const pcontext;
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@ -155,7 +336,7 @@ struct HostAudioWidget : ModuleWidget {
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if (numIO == 2)
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{
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addParam(createParamCentered<RoundLargeBlackKnob>(Vec(middleX, 290.0f), m, 0));
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addParam(createParamCentered<NanoKnob>(Vec(middleX, 290.0f), m, 0));
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}
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}
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