source: tmcsimulator-scriptbuilder/trunk/src/scriptbuilder/gui/drawers/CursorDrawer.java @ 145

package scriptbuilder.gui.drawers;



import java.awt.Graphics2D;

import java.awt.Image;

import java.io.File;

import java.io.IOException;

import java.util.logging.Level;

import java.util.logging.Logger;

import javax.imageio.ImageIO;

import scriptbuilder.gui.ScriptBuilderGuiConstants;



/**

 * Draws the cursor which marks the X position on the currently focused incident

 * timeline.

 *

 * @author Greg Eddington <geddingt@calpoly.edu>

 * @author Bryan McGuffin

 */

public class CursorDrawer

{



    /**

     * The working copy of the cursor icon to use.

     */

    private static Image cursorIconImage = null;



    /**

     * Gets the image to use for the cursor and stores it for faster subsequent

     * lookups.

     *

     * @return Cursor.png

     */

    private static Image getCursorIconImage()

    {

        if (cursorIconImage == null)

        {

            try

            {

                cursorIconImage = ImageIO.read(images.Images.getImage("Cursor.png"));

            }

            catch (IOException ex)

            {

                Logger.getLogger(EventIconDrawer.class.getName()).log(Level.SEVERE, null, ex);

            }

        }



        return cursorIconImage;

    }



    /**

     * Sets up the box for the cursor timestamp text, then draws the cursor at

     * the given position.

     *

     * @param g2d the graphics component

     * @param x current offset of the mouse from the center of the cursor

     * @param locked if true, timestamp is a different color

     */

    public static void DrawCursor(Graphics2D g2d, int x,

            boolean locked)

    {

        // Timestamp Border

        g2d.setColor(ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_BORDER_COLOR);

        g2d.fillRect(x - ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_BORDER_HORIZONTAL_CENTER,

                ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_BORDER_TOP_MARGIN,

                2 * ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_BORDER_HORIZONTAL_CENTER,

                ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_BORDER_HEIGHT);



        // Timestamp Center

        g2d.setColor(locked ? ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_LOCKED_COLOR

                : ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_ACTIVE_COLOR);

        g2d.fillRect(x - ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_HORIZONTAL_CENTER,

                ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_TOP_MARGIN,

                2 * ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_HORIZONTAL_CENTER,

                ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_HEIGHT);



        // Timestamp Text

        g2d.setColor(ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_TEXT_COLOR);

        int seconds = x / ScriptBuilderGuiConstants.PIXEL_WIDTH_PER_HORIZONTAL_TICK

                * ScriptBuilderGuiConstants.HORIZONTAL_TICK_RESOLUTION;

        g2d.drawString(seconds / 3600 + ":"

                + (seconds / 60 % 60 > 9 ? seconds / 60 % 60

                : "0" + seconds / 60 % 60)

                + ":" + (seconds % 60)/10  + "0",

                x - ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_TEXT_CENTER,

                ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_TEXT_TOP_MARGIN);



        // Timestamp Cursor

        g2d.drawImage(getCursorIconImage(),

                x - ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_ICON_CENTER,

                ScriptBuilderGuiConstants.CURSOR_TIMESTAMP_ICON_TOP_MARGIN,

                null);

    }

}