tal-reverb-2-juce/src/FilmStripKnob.h

   1 class FilmStripKnob : public Slider
   2 {
   3 public:
   4         FilmStripKnob(Image image, const int numFrames, const bool stripIsHorizontal)
   5                 :   Slider("Film Strip Slider"),
   6                 filmStrip(image),
   7                 numFrames_(numFrames),
   8                 isHorizontal_(stripIsHorizontal)
   9         {
  10                 setTextBoxStyle(NoTextBox, 0, 0, 0);
  11                 setSliderStyle(RotaryVerticalDrag);
  12                 frameHeight = filmStrip.getHeight() / numFrames_;
  13                 frameWidth = filmStrip.getWidth();
  14                 setRange(0.0f, 1.0f, 0.001f);
  15                 customValueText = false;
  16                 valueTextHeight = 10;
  17         }
  18
  19         void paint(Graphics& g)
  20         {
  21                 int value = (getValue() - getMinimum()) / (getMaximum() - getMinimum()) * (numFrames_ - 1);
  22                 if(isHorizontal_) {
  23                         g.drawImage(filmStrip, 8, 0, getWidth() - 16, getHeight() - valueTextHeight * 2,
  24                                 value * frameWidth, 0, frameWidth, frameHeight);
  25                 } else {
  26                         g.drawImage(filmStrip, 8, 0, getWidth() - 16, getHeight() - valueTextHeight * 2,
  27                                 0, value * frameHeight, frameWidth, frameHeight);
  28                 }
  29
  30                 g.setColour(Colour((const juce::uint8)10, (const juce::uint8)10, (const juce::uint8)10));
  31                 g.fillRoundedRectangle(0, getWidth() + 6 - 16, getWidth(), valueTextHeight + 4, 6.0f);
  32
  33                 g.setColour(Colour((const juce::uint8)200, (const juce::uint8)200, (const juce::uint8)200));
  34
  35                 g.setFont(12.0f, Font::plain);
  36                 if (!customValueText)
  37                 {
  38                         valueText = juce::String(getValue(), 2); //  << T("dB");
  39                         g.drawText(valueText, 0, getWidth() + 8 - 16, getWidth(), valueTextHeight, juce::Justification::centred, false);
  40                 }
  41                 else
  42                 {
  43                         g.drawText(valueText, 0, getWidth() + 8 - 16, getWidth(), valueTextHeight, juce::Justification::centred, false);
  44                 }
  45         }
  46
  47         void setTextValue(juce::String valueText)
  48         {
  49                 this->valueText = valueText;
  50                 customValueText = true;
  51         }
  52
  53 private:
  54         Image filmStrip;
  55         const int numFrames_;
  56         const bool isHorizontal_;
  57         int frameWidth, frameHeight;
  58
  59         juce::String valueText;
  60         bool customValueText;
  61         int valueTextHeight;
  62 };