Chapter 8, Problem 2PP

Program Plan Intro

Enhancement of the picture gallery program

Program plan:

• In the file “Picture.java”, import necessary packages, and create a class “Picture”,
  • Create a label.
  • Declare necessary variables.
  • Define the constructor to construct a picture from a given file or URL.
  • Define the method “getBounds()” to return the bounds of this picture.
  • Define the method “move()” to move the picture by a given amount.
  • Define the method “toString()” to get the formatted string.
  • Define the method “paintShape()” to paint the shape.
  • Create a static “Canvas” class to create the output image,
    • Create a class “CanvasComponent” to create component for output picture.
    • Define the constructor to create the picture.
• In the file “Gallery.java”, import necessary package, and create a class “Gallery”,
  • Define a method “main()”,
    • Initialize the maximum width.
    • Create an array list to hold all the rectangles.
    • Create an object for “Picture”.
    • Loop through all pictures,
      • Create an object for “Picture”.
      • Check if the first row all goes at Y == 0,
        • Call the method “insertPos()” to find the position.
      • Otherwise, search to find where to locate the remaining pictures.
      • Place this rectangle in the array list.
  • Define the method “intersects()” to check if a rectangle intersects a list of others.
  • Define the method “insertPos(” to find the position to insert a rectangle.
  • Define the method “removeSpaceOnLeft()” to move a rectangle as far to the left as it will go without running into another or the edge.