/**
   * Gets the FontMetrics object for the supplied font. This method caches font metrics to ensure
   * native fonts are not loaded twice for the same font.
   */
  static synchronized QtFontMetrics getFontMetrics(Font font, boolean backwardCompat) {

    /* See if metrics has been stored in font already. */

    QtFontMetrics fm = (QtFontMetrics) font.metrics;

    if (fm == null) {
      boolean strikethrough = false, underline = false;

      /* See if a font metrics of the same native name and size has already been loaded.
      If it has then we use that one. */

      String nativeName = (String) fontNameMap.get(font.name.toLowerCase());

      if (nativeName == null) nativeName = (String) fontNameMap.get("default");

      String key = nativeName + "." + font.style + "." + font.size;

      if (!backwardCompat) {
        Map fa = font.getAttributes();
        Object obj;

        if ((obj = fa.get(TextAttribute.STRIKETHROUGH)) != null) {
          if (obj.equals(TextAttribute.STRIKETHROUGH_ON)) {
            key += ".s";
            strikethrough = true;
          }
        }

        if ((obj = fa.get(TextAttribute.UNDERLINE)) != null) {
          if (obj.equals(TextAttribute.UNDERLINE_ON)) {
            key += ".u";
            underline = true;
          }
        }
      }

      fm = (QtFontMetrics) fontMetricsMap.get(key);

      if (fm == null) {
        fontMetricsMap.put(
            key, fm = new QtFontMetrics(font, nativeName, font.style, strikethrough, underline));
      }

      font.metrics = fm;
    }

    return fm;
  }
Exemplo n.º 2
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 /**
  * Gets the BDFontMetrics object for the supplied font. This method caches font metrics to ensure
  * native fonts are not loaded twice for the same font.
  */
 static synchronized BDFontMetrics getFontMetrics(Font font) {
   /* See if metrics has been stored in font already. */
   BDFontMetrics fm = null;
   // BDFontMetrics fm = (BDFontMetrics)font.metrics;
   // if (fm == null) {
   /* See if a font metrics of the same native name and size has already been loaded.
   If it has then we use that one. */
   String nativeName =
       (String) fontNameMap.get(font.getName().toLowerCase() + "." + font.getStyle());
   if (nativeName == null) nativeName = (String) fontNameMap.get("default." + font.getStyle());
   String key = nativeName + "." + font.getSize();
   fm = (BDFontMetrics) fontMetricsMap.get(key);
   if (fm == null) fontMetricsMap.put(key, fm = new BDFontMetrics(font, nativeName));
   // font.metrics = fm;
   // }
   return fm;
 }
Exemplo n.º 3
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  /**
   * Creates a font metrics for the supplied font. To get a font metrics for a font use the static
   * method getFontMetrics instead which does caching.
   */
  private BDFontMetrics(Font font, String nativeName) {
    super(font);

    ftFace = loadFontN(ftLib, nativeName, font.getSize());
    if (ftFace == 0) throw new AWTError("font face:" + nativeName + " not loaded");

    /* Cache first 256 char widths for use by the getWidths method and for faster metric
    calculation as they are commonly used (ASCII) characters. */
    widths = new int[256];
    for (int i = 0; i < 256; i++) widths[i] = charWidthN(ftFace, (char) i);
  }
Exemplo n.º 4
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  /**
   * Execute applet events. Here is the state transition diagram
   *
   * <pre>{@literal
   *   Note: (XXX) is the action
   *         APPLET_XXX is the state
   *  (applet code loaded) --> APPLET_LOAD -- (applet init called)--> APPLET_INIT --
   *  (applet start called) --> APPLET_START -- (applet stop called) --> APPLET_STOP --
   *  (applet destroyed called) --> APPLET_DESTROY --> (applet gets disposed) -->
   *   APPLET_DISPOSE --> ...
   * }</pre>
   *
   * In the legacy lifecycle model. The applet gets loaded, inited and started. So it stays in the
   * APPLET_START state unless the applet goes away(refresh page or leave the page). So the applet
   * stop method called and the applet enters APPLET_STOP state. Then if the applet is revisited, it
   * will call applet start method and enter the APPLET_START state and stay there.
   *
   * <p>In the modern lifecycle model. When the applet first time visited, it is same as legacy
   * lifecycle model. However, when the applet page goes away. It calls applet stop method and
   * enters APPLET_STOP state and then applet destroyed method gets called and enters APPLET_DESTROY
   * state.
   *
   * <p>This code is also called by AppletViewer. In AppletViewer "Restart" menu, the applet is jump
   * from APPLET_STOP to APPLET_DESTROY and to APPLET_INIT .
   *
   * <p>Also, the applet can jump from APPLET_INIT state to APPLET_DESTROY (in Netscape/Mozilla
   * case). Same as APPLET_LOAD to APPLET_DISPOSE since all of this are triggered by browser.
   */
  @Override
  public void run() {

    Thread curThread = Thread.currentThread();
    if (curThread == loaderThread) {
      // if we are in the loader thread, cause
      // loading to occur.  We may exit this with
      // status being APPLET_DISPOSE, APPLET_ERROR,
      // or APPLET_LOAD
      runLoader();
      return;
    }

    boolean disposed = false;
    while (!disposed && !curThread.isInterrupted()) {
      AppletEvent evt;
      try {
        evt = getNextEvent();
      } catch (InterruptedException e) {
        showAppletStatus("bail");
        return;
      }

      // showAppletStatus("EVENT = " + evt.getID());
      try {
        switch (evt.getID()) {
          case APPLET_LOAD:
            if (!okToLoad()) {
              break;
            }
            // This complexity allows loading of applets to be
            // interruptable.  The actual thread loading runs
            // in a separate thread, so it can be interrupted
            // without harming the applet thread.
            // So that we don't have to worry about
            // concurrency issues, the main applet thread waits
            // until the loader thread terminates.
            // (one way or another).
            if (loaderThread == null) {
              setLoaderThread(new Thread(null, this, "AppletLoader", 0, false));
              loaderThread.start();
              // we get to go to sleep while this runs
              loaderThread.join();
              setLoaderThread(null);
            } else {
              // REMIND: issue an error -- this case should never
              // occur.
            }
            break;

          case APPLET_INIT:
            // AppletViewer "Restart" will jump from destroy method to
            // init, that is why we need to check status w/ APPLET_DESTROY
            if (status != APPLET_LOAD && status != APPLET_DESTROY) {
              showAppletStatus("notloaded");
              break;
            }
            applet.resize(defaultAppletSize);

            if (PerformanceLogger.loggingEnabled()) {
              PerformanceLogger.setTime("Applet Init");
              PerformanceLogger.outputLog();
            }
            applet.init();

            // Need the default(fallback) font to be created in this AppContext
            Font f = getFont();
            if (f == null
                || "dialog".equals(f.getFamily().toLowerCase(Locale.ENGLISH))
                    && f.getSize() == 12
                    && f.getStyle() == Font.PLAIN) {
              setFont(new Font(Font.DIALOG, Font.PLAIN, 12));
            }

            // Validate the applet in event dispatch thread
            // to avoid deadlock.
            try {
              final AppletPanel p = this;
              Runnable r =
                  new Runnable() {
                    @Override
                    public void run() {
                      p.validate();
                    }
                  };
              AWTAccessor.getEventQueueAccessor().invokeAndWait(applet, r);
            } catch (InterruptedException ie) {
            } catch (InvocationTargetException ite) {
            }

            status = APPLET_INIT;
            showAppletStatus("inited");
            break;

          case APPLET_START:
            {
              if (status != APPLET_INIT && status != APPLET_STOP) {
                showAppletStatus("notinited");
                break;
              }
              applet.resize(currentAppletSize);
              applet.start();

              // Validate and show the applet in event dispatch thread
              // to avoid deadlock.
              try {
                final AppletPanel p = this;
                final Applet a = applet;
                Runnable r =
                    new Runnable() {
                      @Override
                      public void run() {
                        p.validate();
                        a.setVisible(true);

                        // Fix for BugTraq ID 4041703.
                        // Set the default focus for an applet.
                        if (hasInitialFocus()) {
                          setDefaultFocus();
                        }
                      }
                    };
                AWTAccessor.getEventQueueAccessor().invokeAndWait(applet, r);
              } catch (InterruptedException ie) {
              } catch (InvocationTargetException ite) {
              }

              status = APPLET_START;
              showAppletStatus("started");
              break;
            }

          case APPLET_STOP:
            if (status != APPLET_START) {
              showAppletStatus("notstarted");
              break;
            }
            status = APPLET_STOP;

            // Hide the applet in event dispatch thread
            // to avoid deadlock.
            try {
              final Applet a = applet;
              Runnable r =
                  new Runnable() {
                    @Override
                    public void run() {
                      a.setVisible(false);
                    }
                  };
              AWTAccessor.getEventQueueAccessor().invokeAndWait(applet, r);
            } catch (InterruptedException ie) {
            } catch (InvocationTargetException ite) {
            }

            // During Applet.stop(), any AccessControlException on an involved Class remains in
            // the "memory" of the AppletClassLoader.  If the same instance of the ClassLoader is
            // reused, the same exception will occur during class loading.  Set the
            // AppletClassLoader's
            // exceptionStatusSet flag to allow recognition of what had happened
            // when reusing AppletClassLoader object.
            try {
              applet.stop();
            } catch (java.security.AccessControlException e) {
              setExceptionStatus(e);
              // rethrow exception to be handled as it normally would be.
              throw e;
            }
            showAppletStatus("stopped");
            break;

          case APPLET_DESTROY:
            if (status != APPLET_STOP && status != APPLET_INIT) {
              showAppletStatus("notstopped");
              break;
            }
            status = APPLET_DESTROY;

            // During Applet.destroy(), any AccessControlException on an involved Class remains in
            // the "memory" of the AppletClassLoader.  If the same instance of the ClassLoader is
            // reused, the same exception will occur during class loading.  Set the
            // AppletClassLoader's
            // exceptionStatusSet flag to allow recognition of what had happened
            // when reusing AppletClassLoader object.
            try {
              applet.destroy();
            } catch (java.security.AccessControlException e) {
              setExceptionStatus(e);
              // rethrow exception to be handled as it normally would be.
              throw e;
            }
            showAppletStatus("destroyed");
            break;

          case APPLET_DISPOSE:
            if (status != APPLET_DESTROY && status != APPLET_LOAD) {
              showAppletStatus("notdestroyed");
              break;
            }
            status = APPLET_DISPOSE;

            try {
              final Applet a = applet;
              Runnable r =
                  new Runnable() {
                    @Override
                    public void run() {
                      remove(a);
                    }
                  };
              AWTAccessor.getEventQueueAccessor().invokeAndWait(applet, r);
            } catch (InterruptedException ie) {
            } catch (InvocationTargetException ite) {
            }
            applet = null;
            showAppletStatus("disposed");
            disposed = true;
            break;

          case APPLET_QUIT:
            return;
        }
      } catch (Exception e) {
        status = APPLET_ERROR;
        if (e.getMessage() != null) {
          showAppletStatus("exception2", e.getClass().getName(), e.getMessage());
        } else {
          showAppletStatus("exception", e.getClass().getName());
        }
        showAppletException(e);
      } catch (ThreadDeath e) {
        showAppletStatus("death");
        return;
      } catch (Error e) {
        status = APPLET_ERROR;
        if (e.getMessage() != null) {
          showAppletStatus("error2", e.getClass().getName(), e.getMessage());
        } else {
          showAppletStatus("error", e.getClass().getName());
        }
        showAppletException(e);
      }
      clearLoadAbortRequest();
    }
  }