JDK14/Java14源码在线阅读
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package sun.awt;
import java.awt.AWTPermission;
import java.awt.DisplayMode;
import java.awt.EventQueue;
import java.awt.Frame;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;
import java.awt.Window;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.awt.image.ColorModel;
import java.awt.peer.WindowPeer;
import java.util.ArrayList;
import java.util.Vector;
import sun.awt.windows.WWindowPeer;
import sun.java2d.SunGraphicsEnvironment;
import sun.java2d.opengl.WGLGraphicsConfig;
import sun.java2d.windows.WindowsFlags;
import static sun.awt.Win32GraphicsEnvironment.debugScaleX;
import static sun.awt.Win32GraphicsEnvironment.debugScaleY;
/**
* This is an implementation of a GraphicsDevice object for a single
* Win32 screen.
*
* @see GraphicsEnvironment
* @see GraphicsConfiguration
*/
public class Win32GraphicsDevice extends GraphicsDevice implements
DisplayChangedListener {
int screen;
ColorModel dynamicColorModel; // updated with dev changes
ColorModel colorModel; // static for device
protected GraphicsConfiguration[] configs;
protected GraphicsConfiguration defaultConfig;
private final String idString;
protected String descString;
// Note that we do not synchronize access to this variable - it doesn't
// really matter if a thread does an operation on graphics device which is
// about to become invalid (or already become) - we are prepared to deal
// with this on the native level.
private boolean valid;
// keep track of top-level windows on this display
private SunDisplayChanger topLevels = new SunDisplayChanger();
// REMIND: we may disable the use of pixel formats for some accelerated
// pipelines which are mutually exclusive with opengl, for which
// pixel formats were added in the first place
protected static boolean pfDisabled;
private static AWTPermission fullScreenExclusivePermission;
// the original display mode we had before entering the fullscreen
// mode
private DisplayMode defaultDisplayMode;
// activation/deactivation listener for the full-screen window
private WindowListener fsWindowListener;
private float scaleX;
private float scaleY;
static {
// 4455041 - Even when ddraw is disabled, ddraw.dll is loaded when
// pixel format calls are made. This causes problems when a Java app
// is run as an NT service. To prevent the loading of ddraw.dll
// completely, sun.awt.nopixfmt should be set as well. Apps which use
// OpenGL w/ Java probably don't want to set this.
String nopixfmt = java.security.AccessController.doPrivileged(
new sun.security.action.GetPropertyAction("sun.awt.nopixfmt"));
pfDisabled = (nopixfmt != null);
initIDs();
}
private static native void initIDs();
native void initDevice(int screen);
native void initNativeScale(int screen);
native void setNativeScale(int screen, float scaleX, float scaleY);
native float getNativeScaleX(int screen);
native float getNativeScaleY(int screen);
public Win32GraphicsDevice(int screennum) {
this.screen = screennum;
// we cache the strings because we want toString() and getIDstring
// to reflect the original screen number (which may change if the
// device is removed)
idString = "\\Display"+screen;
// REMIND: may be should use class name?
descString = "Win32GraphicsDevice[screen=" + screen;
valid = true;
initDevice(screennum);
initScaleFactors();
}
/**
* Returns the type of the graphics device.
* @see #TYPE_RASTER_SCREEN
* @see #TYPE_PRINTER
* @see #TYPE_IMAGE_BUFFER
*/
@Override
public int getType() {
return TYPE_RASTER_SCREEN;
}
/**
* Returns the Win32 screen of the device.
*/
public int getScreen() {
return screen;
}
public float getDefaultScaleX() {
return scaleX;
}
public float getDefaultScaleY() {
return scaleY;
}
private void initScaleFactors() {
if (SunGraphicsEnvironment.isUIScaleEnabled()) {
if (debugScaleX > 0 && debugScaleY > 0) {
scaleX = debugScaleX;
scaleY = debugScaleY;
setNativeScale(screen, scaleX, scaleY);
} else {
initNativeScale(screen);
scaleX = getNativeScaleX(screen);
scaleY = getNativeScaleY(screen);
}
} else {
scaleX = 1;
scaleY = 1;
}
}
/**
* Returns whether this is a valid devicie. Device can become
* invalid as a result of device removal event.
*/
public boolean isValid() {
return valid;
}
/**
* Called from native code when the device was removed.
*
* @param defaultScreen the current default screen
*/
protected void invalidate(int defaultScreen) {
valid = false;
screen = defaultScreen;
}
/**
* Returns the identification string associated with this graphics
* device.
*/
@Override
public String getIDstring() {
return idString;
}
/**
* Returns all of the graphics
* configurations associated with this graphics device.
*/
@Override
public GraphicsConfiguration[] getConfigurations() {
if (configs==null) {
if (WindowsFlags.isOGLEnabled() && isDefaultDevice()) {
defaultConfig = getDefaultConfiguration();
if (defaultConfig != null) {
configs = new GraphicsConfiguration[1];
configs[0] = defaultConfig;
return configs.clone();
}
}
int max = getMaxConfigs(screen);
int defaultPixID = getDefaultPixID(screen);
Vector<GraphicsConfiguration> v = new Vector<>( max );
if (defaultPixID == 0) {
// Workaround for failing GDI calls
defaultConfig = Win32GraphicsConfig.getConfig(this,
defaultPixID);
v.addElement(defaultConfig);
}
else {
for (int i = 1; i <= max; i++) {
if (isPixFmtSupported(i, screen)) {
if (i == defaultPixID) {
defaultConfig = Win32GraphicsConfig.getConfig(
this, i);
v.addElement(defaultConfig);
}
else {
v.addElement(Win32GraphicsConfig.getConfig(
this, i));
}
}
}
}
configs = new GraphicsConfiguration[v.size()];
v.copyInto(configs);
}
return configs.clone();
}
/**
* Returns the maximum number of graphics configurations available, or 1
* if PixelFormat calls fail or are disabled.
* This number is less than or equal to the number of graphics
* configurations supported.
*/
protected int getMaxConfigs(int screen) {
if (pfDisabled) {
return 1;
} else {
return getMaxConfigsImpl(screen);
}
}
private native int getMaxConfigsImpl(int screen);
/**
* Returns whether or not the PixelFormat indicated by index is
* supported. Supported PixelFormats support drawing to a Window
* (PFD_DRAW_TO_WINDOW), support GDI (PFD_SUPPORT_GDI), and in the
* case of an 8-bit format (cColorBits <= 8) uses indexed colors
* (iPixelType == PFD_TYPE_COLORINDEX).
* We use the index 0 to indicate that PixelFormat calls don't work, or
* are disabled. Do not call this function with an index of 0.
* @param index a PixelFormat index
*/
private native boolean isPixFmtSupported(int index, int screen);
/**
* Returns the PixelFormatID of the default graphics configuration
* associated with this graphics device, or 0 if PixelFormats calls fail or
* are disabled.
*/
protected int getDefaultPixID(int screen) {
if (pfDisabled) {
return 0;
} else {
return getDefaultPixIDImpl(screen);
}
}
/**
* Returns the default PixelFormat ID from GDI. Do not call if PixelFormats
* are disabled.
*/
private native int getDefaultPixIDImpl(int screen);
/**
* Returns the default graphics configuration
* associated with this graphics device.
*/
@Override
public GraphicsConfiguration getDefaultConfiguration() {
if (defaultConfig == null) {
// first try to create a WGLGraphicsConfig if OGL is enabled
// REMIND: the WGL code does not yet work properly in multimon
// situations, so we will fallback on GDI if we are not on the
// default device...
if (WindowsFlags.isOGLEnabled() && isDefaultDevice()) {
int defPixID = WGLGraphicsConfig.getDefaultPixFmt(screen);
defaultConfig = WGLGraphicsConfig.getConfig(this, defPixID);
if (WindowsFlags.isOGLVerbose()) {
if (defaultConfig != null) {
System.out.print("OpenGL pipeline enabled");
} else {
System.out.print("Could not enable OpenGL pipeline");
}
System.out.println(" for default config on screen " +
screen);
}
}
// Fix for 4669614. Most apps are not concerned with PixelFormats,
// yet we ALWAYS used them for determining ColorModels and such.
// By passing in 0 as the PixelFormatID here, we signal that
// PixelFormats should not be used, thus avoid loading the opengl
// library. Apps concerned with PixelFormats can still use
// GraphicsConfiguration.getConfigurations().
// Note that calling native pixel format functions tends to cause
// problems between those functions (which are OpenGL-related)
// and our use of DirectX. For example, some Matrox boards will
// crash or hang calling these functions when any app is running
// in DirectX fullscreen mode. So avoiding these calls unless
// absolutely necessary is preferable.
if (defaultConfig == null) {
defaultConfig = Win32GraphicsConfig.getConfig(this, 0);
}
}
return defaultConfig;
}
@Override
public String toString() {
return valid ? descString + "]" : descString + ", removed]";
}
/**
* Returns true if this is the default GraphicsDevice for the
* GraphicsEnvironment.
*/
private boolean isDefaultDevice() {
return (this ==
GraphicsEnvironment.
getLocalGraphicsEnvironment().getDefaultScreenDevice());
}
private static boolean isFSExclusiveModeAllowed() {
SecurityManager security = System.getSecurityManager();
if (security != null) {
if (fullScreenExclusivePermission == null) {
fullScreenExclusivePermission =
new AWTPermission("fullScreenExclusive");
}
try {
security.checkPermission(fullScreenExclusivePermission);
} catch (SecurityException e) {
return false;
}
}
return true;
}
/**
* returns true unless we're not allowed to use fullscreen mode.
*/
@Override
public boolean isFullScreenSupported() {
return isFSExclusiveModeAllowed();
}
@Override
public synchronized void setFullScreenWindow(Window w) {
Window old = getFullScreenWindow();
if (w == old) {
return;
}
if (!isFullScreenSupported()) {
super.setFullScreenWindow(w);
return;
}
// Enter windowed mode.
if (old != null) {
// restore the original display mode
if (defaultDisplayMode != null) {
setDisplayMode(defaultDisplayMode);
// we set the default display mode to null here
// because the default mode could change during
// the life of the application (user can change it through
// the desktop properties dialog, for example), so
// we need to record it every time prior to
// entering the fullscreen mode.
defaultDisplayMode = null;
}
WWindowPeer peer = AWTAccessor.getComponentAccessor().getPeer(old);
if (peer != null) {
peer.setFullScreenExclusiveModeState(false);
// we used to destroy the buffers on exiting fs mode, this
// is no longer needed since fs change will cause a surface
// data replacement
synchronized(peer) {
exitFullScreenExclusive(screen, peer);
}
}
removeFSWindowListener(old);
}
super.setFullScreenWindow(w);
if (w != null) {
// always record the default display mode prior to going
// fullscreen
defaultDisplayMode = getDisplayMode();
addFSWindowListener(w);
// Enter full screen exclusive mode.
WWindowPeer peer = AWTAccessor.getComponentAccessor().getPeer(w);
if (peer != null) {
synchronized(peer) {
enterFullScreenExclusive(screen, peer);
// Note: removed replaceSurfaceData() call because
// changing the window size or making it visible
// will cause this anyway, and both of these events happen
// as part of switching into fullscreen mode.
}
peer.setFullScreenExclusiveModeState(true);
}
// fix for 4868278
peer.updateGC();
}
}
// Entering and exiting full-screen mode are done within a
// tree-lock and should never lock on any resources which are
// required by other threads which may have them and may require
// the tree-lock.
// REMIND: in the future these methods may need to become protected so that
// subclasses could override them and use appropriate api other than GDI
// for implementing these functions.
protected native void enterFullScreenExclusive(int screen, WindowPeer w);
protected native void exitFullScreenExclusive(int screen, WindowPeer w);
@Override
public boolean isDisplayChangeSupported() {
return (isFullScreenSupported() && getFullScreenWindow() != null);
}
@Override
public synchronized void setDisplayMode(DisplayMode dm) {
if (!isDisplayChangeSupported()) {
super.setDisplayMode(dm);
return;
}
if (dm == null || (dm = getMatchingDisplayMode(dm)) == null) {
throw new IllegalArgumentException("Invalid display mode");
}
if (getDisplayMode().equals(dm)) {
return;
}
Window w = getFullScreenWindow();
if (w != null) {
WWindowPeer peer = AWTAccessor.getComponentAccessor().getPeer(w);
configDisplayMode(screen, peer, dm.getWidth(), dm.getHeight(),
dm.getBitDepth(), dm.getRefreshRate());
// resize the fullscreen window to the dimensions of the new
// display mode
Rectangle screenBounds = getDefaultConfiguration().getBounds();
w.setBounds(screenBounds.x, screenBounds.y,
dm.getWidth(), dm.getHeight());
// Note: no call to replaceSurfaceData is required here since
// replacement will be caused by an upcoming display change event
} else {
throw new IllegalStateException("Must be in fullscreen mode " +
"in order to set display mode");
}
}
protected native DisplayMode getCurrentDisplayMode(int screen);
protected native void configDisplayMode(int screen, WindowPeer w, int width,
int height, int bitDepth,
int refreshRate);
protected native void enumDisplayModes(int screen, ArrayList<DisplayMode> modes);
@Override
public synchronized DisplayMode getDisplayMode() {
DisplayMode res = getCurrentDisplayMode(screen);
return res;
}
@Override
public synchronized DisplayMode[] getDisplayModes() {
ArrayList<DisplayMode> modes = new ArrayList<>();
enumDisplayModes(screen, modes);
int listSize = modes.size();
DisplayMode[] retArray = new DisplayMode[listSize];
for (int i = 0; i < listSize; i++) {
retArray[i] = modes.get(i);
}
return retArray;
}
protected synchronized DisplayMode getMatchingDisplayMode(DisplayMode dm) {
if (!isDisplayChangeSupported()) {
return null;
}
DisplayMode[] modes = getDisplayModes();
for (DisplayMode mode : modes) {
if (dm.equals(mode) ||
(dm.getRefreshRate() == DisplayMode.REFRESH_RATE_UNKNOWN &&
dm.getWidth() == mode.getWidth() &&
dm.getHeight() == mode.getHeight() &&
dm.getBitDepth() == mode.getBitDepth()))
{
return mode;
}
}
return null;
}
/*
* From the DisplayChangeListener interface.
* Called from Win32GraphicsEnvironment when the display settings have
* changed.
*/
@Override
public void displayChanged() {
dynamicColorModel = null;
defaultConfig = null;
configs = null;
initScaleFactors();
// pass on to all top-level windows on this display
topLevels.notifyListeners();
}
/**
* Part of the DisplayChangedListener interface: devices
* do not need to react to this event
*/
@Override
public void paletteChanged() {
}
/*
* Add a DisplayChangeListener to be notified when the display settings
* are changed. Typically, only top-level containers need to be added
* to Win32GraphicsDevice.
*/
public void addDisplayChangedListener(DisplayChangedListener client) {
topLevels.add(client);
}
/*
* Remove a DisplayChangeListener from this Win32GraphicsDevice
*/
public void removeDisplayChangedListener(DisplayChangedListener client) {
topLevels.remove(client);
}
/**
* Creates and returns the color model associated with this device
*/
private native ColorModel makeColorModel (int screen,
boolean dynamic);
/**
* Returns a dynamic ColorModel which is updated when there
* are any changes (e.g., palette changes) in the device
*/
public ColorModel getDynamicColorModel() {
if (dynamicColorModel == null) {
dynamicColorModel = makeColorModel(screen, true);
}
return dynamicColorModel;
}
/**
* Returns the non-dynamic ColorModel associated with this device
*/
public ColorModel getColorModel() {
if (colorModel == null) {
colorModel = makeColorModel(screen, false);
}
return colorModel;
}
/**
* WindowAdapter class responsible for de/iconifying full-screen window
* of this device.
*
* The listener restores the default display mode when window is iconified
* and sets it back to the one set by the user on de-iconification.
*/
private static class Win32FSWindowAdapter extends WindowAdapter {
private Win32GraphicsDevice device;
private DisplayMode dm;
Win32FSWindowAdapter(Win32GraphicsDevice device) {
this.device = device;
}
private void setFSWindowsState(Window other, int state) {
GraphicsDevice[] gds =
GraphicsEnvironment.getLocalGraphicsEnvironment().
getScreenDevices();
// check if the de/activation was caused by other
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