public SimpleWhiteboard(MultitouchFramework mf, GraphicsWrapper gw) {
multitouchFramework = mf;
this.gw = gw;
multitouchFramework.setPreferredWindowSize(
Constant.INITIAL_WINDOW_WIDTH, Constant.INITIAL_WINDOW_HEIGHT);
userContexts = new UserContext[Constant.NUM_USERS];
for (int j = 0; j < Constant.NUM_USERS; ++j) {
userContexts[j] = new UserContext(drawing);
}
// initialize the positions of the palettes
if (Constant.NUM_USERS == 1) {
userContexts[0].setPositionOfCenterOfPalette(
Constant.INITIAL_WINDOW_WIDTH / 2, Constant.INITIAL_WINDOW_HEIGHT / 2);
} else {
// Compute a circular layout of the palettes
float radius = Math.min(Constant.INITIAL_WINDOW_WIDTH, Constant.INITIAL_WINDOW_HEIGHT) / 4;
for (int j = 0; j < Constant.NUM_USERS; ++j) {
float angleInRadians = (float) (2 * Math.PI * j / Constant.NUM_USERS);
userContexts[j].setPositionOfCenterOfPalette(
Constant.INITIAL_WINDOW_WIDTH / 2 + (float) (radius * Math.cos(angleInRadians)),
Constant.INITIAL_WINDOW_HEIGHT / 2 + (float) (radius * Math.sin(angleInRadians)));
}
}
gw.setFontHeight(Constant.TEXT_HEIGHT);
gw.frame(new AlignedRectangle2D(new Point2D(-100, -100), new Point2D(100, 100)), true);
}
public void actionPerformed(ActionEvent e) {
Object source = e.getSource();
if (source == testMenuItem1) {
System.out.println("testMenuItem1 has been selected");
} else if (source == testMenuItem2) {
System.out.println("testMenuItem2 has been selected");
} else if (source == frameAllButton) {
gw.frame(drawing.getBoundingRectangle(), true);
multitouchFramework.requestRedraw();
} else if (source == testButton1) {
System.out.println("testButton1 has been selected");
} else if (source == testButton2) {
System.out.println("testButton2 has been selected");
}
}
public synchronized void processMultitouchInputEvent(int id, float x, float y, int type) {
// System.out.println("event: "+id+", "+x+", "+y+", "+type);
int indexOfUserContext = findIndexOfUserContextForMultitouchInputEvent(id, x, y);
boolean doOtherUserContextsHaveCursors = false;
for (int j = 0; j < Constant.NUM_USERS; ++j) {
if (j != indexOfUserContext && userContexts[j].hasCursors()) {
doOtherUserContextsHaveCursors = true;
break;
}
}
boolean redrawRequested =
userContexts[indexOfUserContext].processMultitouchInputEvent(
id, x, y, type, gw, doOtherUserContextsHaveCursors);
if (redrawRequested) multitouchFramework.requestRedraw();
}