?? table.java~7~
字號(hào):
package customitem;import javax.microedition.lcdui.*;/** * * */public class Table extends CustomItem implements ItemCommandListener { private final static Command CMD_EDIT = new Command("Edit", Command.ITEM, 1); private Display display; private int rows = 5; private int cols = 3; private int dx = 50; //每格寬 private int dy = 20; //每格高 private final static int UPPER = 0; private final static int IN = 1; private final static int LOWER = 2; private int location = UPPER; private int currentX = 0; private int currentY = 0; private String[][] data = new String[rows][cols]; //提示是否支持horizontal事件 boolean horz; boolean vert; public Table(String title, Display d) { super(title); display = d; setDefaultCommand(CMD_EDIT); setItemCommandListener(this); int interactionMode = getInteractionModes(); horz = ((interactionMode & CustomItem.TRAVERSE_HORIZONTAL) != 0); vert = ((interactionMode & CustomItem.TRAVERSE_VERTICAL) != 0); } protected int getMinContentHeight() { return (rows * dy) + 1; } protected int getMinContentWidth() { return (cols * dx) + 1; } protected int getPrefContentHeight(int width) { return (rows * dy) + 1; } protected int getPrefContentWidth(int height) { return (cols * dx) + 1; } protected void paint(Graphics g, int w, int h) { //畫(huà)橫線 for (int i = 0; i <= rows; i++) { g.drawLine(0, i * dy, cols * dx, i * dy); } //畫(huà)豎線 for (int i = 0; i <= cols; i++) { g.drawLine(i * dx, 0, i * dx, rows * dy); } int oldColor = g.getColor(); //畫(huà)當(dāng)前格 g.setColor(0x0000D0D0); g.fillRect((currentX * dx) + 1, (currentY * dy) + 1, dx - 1, dy - 1); g.setColor(oldColor); //將data[][]中的字符加入到格子中 for (int i = 0; i < rows; i++) { for (int j = 0; j < cols; j++) { if (data[i][j] != null) { // store clipping properties int oldClipX = g.getClipX(); int oldClipY = g.getClipY(); int oldClipWidth = g.getClipWidth(); int oldClipHeight = g.getClipHeight(); g.setClip((j * dx) + 1, i * dy, dx - 1, dy - 1); g.drawString(data[i][j], (j * dx) + 2, ((i + 1) * dy) - 2, Graphics.BOTTOM | Graphics.LEFT); // restore clipping properties g.setClip(oldClipX, oldClipY, oldClipWidth, oldClipHeight); } } } } protected boolean traverse(int dir, int viewportWidth, int viewportHeight, int[] visRect_inout) { if (horz && vert) { switch (dir) { case Canvas.DOWN: if (location == UPPER) { location = IN; } else { if (currentY < (rows - 1)) { currentY++; repaint(currentX * dx, (currentY - 1) * dy, dx, dy); repaint(currentX * dx, currentY * dy, dx, dy); } else { location = LOWER; return false; } } break; case Canvas.UP: if (location == LOWER) { location = IN; } else { if (currentY > 0) { currentY--; repaint(currentX * dx, (currentY + 1) * dy, dx, dy); repaint(currentX * dx, currentY * dy, dx, dy); } else { location = UPPER; return false; } } break; case Canvas.LEFT: if (currentX > 0) { currentX--; repaint((currentX + 1) * dx, currentY * dy, dx, dy); repaint(currentX * dx, currentY * dy, dx, dy); } break; case Canvas.RIGHT: if (currentX < (cols - 1)) { currentX++; repaint((currentX - 1) * dx, currentY * dy, dx, dy); repaint(currentX * dx, currentY * dy, dx, dy); } } } else if (horz || vert) { switch (dir) { case Canvas.UP: case Canvas.LEFT: if (location == LOWER) { location = IN; } else { if (currentX > 0) { currentX--; repaint((currentX + 1) * dx, currentY * dy, dx, dy); repaint(currentX * dx, currentY * dy, dx, dy); } else if (currentY > 0) { currentY--; repaint(currentX * dx, (currentY + 1) * dy, dx, dy); currentX = cols - 1; repaint(currentX * dx, currentY * dy, dx, dy); } else { location = UPPER; return false; } } break; case Canvas.DOWN: case Canvas.RIGHT: if (location == UPPER) { location = IN; } else { if (currentX < (cols - 1)) { currentX++; repaint((currentX - 1) * dx, currentY * dy, dx, dy); repaint(currentX * dx, currentY * dy, dx, dy); } else if (currentY < (rows - 1)) { currentY++; repaint(currentX * dx, (currentY - 1) * dy, dx, dy); currentX = 0; repaint(currentX * dx, currentY * dy, dx, dy); } else { location = LOWER; return false; } } } } else { // In case of no Traversal at all: (horz|vert) == 0 } visRect_inout[0] = currentX; visRect_inout[1] = currentY; visRect_inout[2] = dx; visRect_inout[3] = dy; return true; } public void setText(String text) { data[currentY][currentX] = text; repaint(currentY * dx, currentX * dy, dx, dy); } public void commandAction(Command c, Item i) { // add item command action }}?? 快捷鍵說(shuō)明
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