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!7

module MiniVNC > DynImageSurface {
  bool enabled, usePossiblyBrokenVersion = true;
  S computerID;
  int width = 256;
  double videoInterval = 2.0, mouseInterval = 0.1;
  
  transient Pt mousePosition;
  
  S switchableFields() { ret "usePossiblyBrokenVersion videoInterval"; }
  
  start {
    doEvery(videoInterval, r grab);
    doEvery(mouseInterval, r moveMouse);
  }
  
  visualize {
    JComponent c = super.visualize();
    imageSurfaceOnMouseMove(imageSurface, voidfunc(Pt p) { mousePosition = p });
    enableDoubleBuffering();
    ret northAndCenterWithMargins(vstackWithSpacing(
      centerAndEastWithMargins(
        withLabel("Computer to control:", dm_onlineComputerSelectorComboBox(dm_fieldLiveValue('computerID))), dm_fieldCheckBox('enabled)),
        jRightAlignedLine(jLabel("Resize to width (pixels):"), jMinWidth(100, jLiveValueIntTextField(dm_fieldLiveValue('width))))),
      c);
  }
  
  bool actuallyEnabled() {
    ret enabled && possibleComputerID(computerID) && dm_isVisible();
  }
  
  void grab enter {
    if (!actuallyEnabled()) ret;
    time "Get Screenshot" {
      setImage(dm_scaledDownScreenshotFromOtherMachine(computerID, width, +usePossiblyBrokenVersion));
    }
  }
  
  transient Pt sentMousePosition;
  void moveMouse enter {
    if (!actuallyEnabled()) ret with sentMousePosition = null;
    Pt p = mousePosition;
    if (neq(p, sentMousePosition)) {
      sentMousePosition = p;
      if (p != null) {
        time "Move Mouse On Other Machine" {
          dm_evalOnOtherMachine(computerID, "dm_moveMouseImmediate_direct(" + p.x + ", " + p.y + ")");
        }
      }
    }
  }
}