private static void setDisplayModeAndFullscreenInternal(boolean fullscreen, DisplayMode mode)
throws LWJGLException {
synchronized (GlobalLock.lock) {
if (mode == null) throw new NullPointerException("mode must be non-null");
DisplayMode old_mode = current_mode;
current_mode = mode;
boolean was_fullscreen = isFullscreen();
Display.fullscreen = fullscreen;
if (was_fullscreen != isFullscreen() || !mode.equals(old_mode)) {
if (!isCreated()) return;
destroyWindow();
try {
if (isFullscreen()) {
switchDisplayMode();
} else {
display_impl.resetDisplayMode();
}
createWindow();
makeCurrentAndSetSwapInterval();
} catch (LWJGLException e) {
drawable.destroy();
display_impl.resetDisplayMode();
throw e;
}
}
}
}
/**
* Swap the display buffers. This method is called from update(), and should normally not be
* called by the application.
*
* @throws OpenGLException if an OpenGL error has occured since the last call to glGetError()
*/
public static void swapBuffers() throws LWJGLException {
synchronized (GlobalLock.lock) {
if (!isCreated()) throw new IllegalStateException("Display not created");
if (LWJGLUtil.DEBUG) drawable.checkGLError();
drawable.swapBuffers();
}
}
private static void makeCurrentAndSetSwapInterval() throws LWJGLException {
makeCurrent();
try {
drawable.checkGLError();
} catch (OpenGLException e) {
LWJGLUtil.log("OpenGL error during context creation: " + e.getMessage());
}
setSwapInterval(swap_interval);
}
private static void releaseDrawable() {
try {
Context context = drawable.getContext();
if (context != null && context.isCurrent()) {
context.releaseCurrent();
context.releaseDrawable();
}
} catch (LWJGLException e) {
LWJGLUtil.log("Exception occurred while trying to release context: " + e);
}
}
/**
* Set the current display mode. If no OpenGL context has been created, the given mode will apply
* to the context when create() is called, and no immediate mode switching will happen. If there
* is a context already, it will be resized according to the given mode. If the context is also a
* fullscreen context, the mode will also be switched immediately. The native cursor position is
* also reset.
*
* @param mode The new display mode to set
* @throws LWJGLException if the display mode could not be set
*/
public static void setDisplayMode(DisplayMode mode) throws LWJGLException {
synchronized (GlobalLock.lock) {
if (mode == null) throw new NullPointerException("mode must be non-null");
boolean was_fullscreen = isFullscreen();
current_mode = mode;
if (isCreated()) {
destroyWindow();
// If mode is not fullscreen capable, make sure we are in windowed mode
try {
if (was_fullscreen && !isFullscreen()) display_impl.resetDisplayMode();
else if (isFullscreen()) switchDisplayMode();
createWindow();
makeCurrentAndSetSwapInterval();
} catch (LWJGLException e) {
drawable.destroy();
display_impl.resetDisplayMode();
throw e;
}
}
}
}
/**
* Set the parent of the Display. If parent is null, the Display will appear as a top level
* window. If parent is not null, the Display is made a child of the parent. A parent's
* isDisplayable() must be true when setParent() is called and remain true until setParent() is
* called again with null or a different parent. This generally means that the parent component
* must remain added to it's parent container.
*
* <p>It is not advisable to call this method from an AWT thread, since the context will be made
* current on the thread and it is difficult to predict which AWT thread will process any given
* AWT event.
*
* <p>While the Display is in fullscreen mode, the current parent will be ignored. Additionally,
* when a non null parent is specified, the Dispaly will inherit the size of the parent,
* disregarding the currently set display mode.
*
* <p>
*/
public static void setParent(Canvas parent) throws LWJGLException {
synchronized (GlobalLock.lock) {
if (Display.parent != parent) {
Display.parent = parent;
if (!isCreated()) return;
destroyWindow();
try {
if (isFullscreen()) {
switchDisplayMode();
} else {
display_impl.resetDisplayMode();
}
createWindow();
makeCurrentAndSetSwapInterval();
} catch (LWJGLException e) {
drawable.destroy();
display_impl.resetDisplayMode();
throw e;
}
}
}
}
/**
* Make the Display the current rendering context for GL calls.
*
* @throws LWJGLException If the context could not be made current
*/
public static void makeCurrent() throws LWJGLException {
drawable.makeCurrent();
}
/** Returns true if the Display's context is current in the current thread. */
public static boolean isCurrent() throws LWJGLException {
return drawable.isCurrent();
}
/**
* Release the Display context.
*
* @throws LWJGLException If the context could not be released
*/
public static void releaseContext() throws LWJGLException {
drawable.releaseContext();
}
/**
* Set the buffer swap interval. This call is a best-attempt at changing the monitor swap
* interval, which is the minimum periodicity of color buffer swaps, measured in video frame
* periods, and is not guaranteed to be successful.
*
* <p>A video frame period is the time required to display a full frame of video data.
*
* @param value The swap interval in frames, 0 to disable
*/
public static void setSwapInterval(int value) {
synchronized (GlobalLock.lock) {
swap_interval = value;
if (isCreated()) drawable.setSwapInterval(swap_interval);
}
}
/**
* Destroy the Display. After this call, there will be no current GL rendering context, regardless
* of whether the Display was the current rendering context.
*/
public static void destroy() {
if (isCreated()) {
drawable.destroy();
}
}
private static void initContext() {
drawable.initContext(r, g, b);
update();
}
public void createWindow(DrawableLWJGL drawable, DisplayMode mode, Canvas parent, int x, int y)
throws LWJGLException {
close_requested = false;
is_dirty = false;
isMinimized = false;
isFocused = false;
redoMakeContextCurrent = false;
maximized = false;
this.parent = parent;
hasParent = parent != null;
parent_hwnd = parent != null ? getHwnd(parent) : 0;
this.hwnd =
nCreateWindow(
x,
y,
mode.getWidth(),
mode.getHeight(),
Display.isFullscreen() || isUndecorated(),
parent != null,
parent_hwnd);
this.resizable = false;
if (hwnd == 0) {
throw new LWJGLException("Failed to create window");
}
this.hdc = getDC(hwnd);
if (hdc == 0) {
nDestroyWindow(hwnd);
throw new LWJGLException("Failed to get dc");
}
try {
if (drawable instanceof DrawableGL) {
int format =
WindowsPeerInfo.choosePixelFormat(
getHdc(),
0,
0,
(PixelFormat) drawable.getPixelFormat(),
null,
true,
true,
false,
true);
WindowsPeerInfo.setPixelFormat(getHdc(), format);
} else {
peer_info = new WindowsDisplayPeerInfo(true);
((DrawableGLES) drawable)
.initialize(
hwnd,
hdc,
EGL.EGL_WINDOW_BIT,
(org.lwjgl.opengles.PixelFormat) drawable.getPixelFormat());
}
peer_info.initDC(getHwnd(), getHdc());
showWindow(getHwnd(), SW_SHOWDEFAULT);
updateWidthAndHeight();
if (parent == null) {
if (Display.isResizable()) {
setResizable(true);
}
setForegroundWindow(getHwnd());
} else {
parent_focused = new AtomicBoolean(false);
parent.addFocusListener(
parent_focus_tracker =
new FocusAdapter() {
public void focusGained(FocusEvent e) {
parent_focused.set(true);
clearAWTFocus();
}
});
SwingUtilities.invokeLater(
new Runnable() {
public void run() {
clearAWTFocus();
}
});
}
grabFocus();
} catch (LWJGLException e) {
nReleaseDC(hwnd, hdc);
nDestroyWindow(hwnd);
throw e;
}
}