Grip

• Example

import compose.grips.*;

GripDispatcher dispatch;

void setup() {
  dispatch = new GripDispatcher(this);
  new CircleGrip(50, 50, 40);
}

void draw() {
  dispatch.update(); // Checks for hover
  dispatch.draw(); // Calls all the draw methods
}

class CircleGrip extends Grip {

  float x, y, diameter;

  CircleGrip(float x, float y, float diameter) {
    this.x = x;
    this.y = y;
    this.diameter = diameter;
  }

  boolean isHovering() {
    return dist(mouseX, mouseY, x, y) < diameter/2;
  }

  void draw() {
    if (this.isTheHover()) {
      fill(255, 0, 0);
    } else {
      fill(255);
    }
    ellipse(x, y, diameter, diameter);
  }

}

Description

Grip is useful for (1) drawing things every frame (2) updating those things every frame (3) making those things respond to the mouse, and sometimes the keyboard. By default, Grips are automatically added to the last GripDispatcher defined upon creation and cannot be created before a GripDispatcher is. However, for this reason we need not necessarily assign Grips to variables.

Fields

selectable

Remains active on release if true

Methods

update()

Arbitrary code running every frame

draw()

Contains directions for drawing

isHovering()

True if the mouse is contained by this Grip's geometry

isTheHover()

True if the best candidate for hover as determined by GripDispatcher

isTheActive()

True if selected by the user

focus()

Called when this Grip becomes active

blur()

Called when this Grip is no longer active

mousePressed()

Called when the mouse is pressed

mouseReleased()

Called when the mouse is released

mouseEntered()

Called when this grip becomes the hover.

mouseExited()

Called when this grip is no longer the hover.

mouseClicked()

Called when the mouse is clicked

mouseDoubleClicked()

Called when the mouse is clicked twice

mouseDragged()

Called when the mouse is dragged

mouseMoved()

Called when the mouse is moved

mouseFirstDragged()

Called the first frame the mouse is dragged

Constructors

None

Related

• GripDispatcher

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