Source for gnu.java.awt.peer.gtk.GtkWindowPeer

   1: /* GtkWindowPeer.java -- Implements WindowPeer with GTK
   2:    Copyright (C) 1998, 1999, 2002, 2005, 2006  Free Software Foundation, Inc.
   3: 
   4: This file is part of GNU Classpath.
   5: 
   6: GNU Classpath is free software; you can redistribute it and/or modify
   7: it under the terms of the GNU General Public License as published by
   8: the Free Software Foundation; either version 2, or (at your option)
   9: any later version.
  10: 
  11: GNU Classpath is distributed in the hope that it will be useful, but
  12: WITHOUT ANY WARRANTY; without even the implied warranty of
  13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14: General Public License for more details.
  15: 
  16: You should have received a copy of the GNU General Public License
  17: along with GNU Classpath; see the file COPYING.  If not, write to the
  18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19: 02110-1301 USA.
  20: 
  21: Linking this library statically or dynamically with other modules is
  22: making a combined work based on this library.  Thus, the terms and
  23: conditions of the GNU General Public License cover the whole
  24: combination.
  25: 
  26: As a special exception, the copyright holders of this library give you
  27: permission to link this library with independent modules to produce an
  28: executable, regardless of the license terms of these independent
  29: modules, and to copy and distribute the resulting executable under
  30: terms of your choice, provided that you also meet, for each linked
  31: independent module, the terms and conditions of the license of that
  32: module.  An independent module is a module which is not derived from
  33: or based on this library.  If you modify this library, you may extend
  34: this exception to your version of the library, but you are not
  35: obligated to do so.  If you do not wish to do so, delete this
  36: exception statement from your version. */
  37: 
  38: 
  39: package gnu.java.awt.peer.gtk;
  40: 
  41: import gnu.java.awt.ComponentReshapeEvent;
  42: 
  43: import java.awt.Component;
  44: import java.awt.Font;
  45: import java.awt.Frame;
  46: import java.awt.Graphics;
  47: import java.awt.KeyboardFocusManager;
  48: import java.awt.Point;
  49: import java.awt.Rectangle;
  50: import java.awt.Window;
  51: import java.awt.event.ComponentEvent;
  52: import java.awt.event.FocusEvent;
  53: import java.awt.event.PaintEvent;
  54: import java.awt.event.WindowEvent;
  55: import java.awt.peer.WindowPeer;
  56: 
  57: public class GtkWindowPeer extends GtkContainerPeer
  58:   implements WindowPeer
  59: {
  60:   protected static final int GDK_WINDOW_TYPE_HINT_NORMAL = 0;
  61:   protected static final int GDK_WINDOW_TYPE_HINT_DIALOG = 1;
  62:   protected static final int GDK_WINDOW_TYPE_HINT_MENU = 2;
  63:   protected static final int GDK_WINDOW_TYPE_HINT_TOOLBAR = 3;
  64:   protected static final int GDK_WINDOW_TYPE_HINT_SPLASHSCREEN = 4;
  65:   protected static final int GDK_WINDOW_TYPE_HINT_UTILITY = 5;
  66:   protected static final int GDK_WINDOW_TYPE_HINT_DOCK = 6;
  67:   protected static final int GDK_WINDOW_TYPE_HINT_DESKTOP = 7;
  68: 
  69:   protected int windowState = Frame.NORMAL;
  70: 
  71:   // Cached awt window component location, width and height.
  72:   private int x, y, width, height;
  73: 
  74:   native void gtkWindowSetTitle (String title);
  75:   native void gtkWindowSetResizable (boolean resizable);
  76:   native void gtkWindowSetModal (boolean modal);
  77:   native void gtkWindowSetAlwaysOnTop ( boolean alwaysOnTop );
  78:   native boolean gtkWindowHasFocus();
  79:   native void realize ();
  80: 
  81:   public void dispose()
  82:   {
  83:     super.dispose();
  84:     GtkMainThread.destroyWindow();
  85:   }
  86: 
  87:   /** Returns the cached width of the AWT window component. */
  88:   int getX ()
  89:   {
  90:     return x;
  91:   }
  92: 
  93:   /** Returns the cached width of the AWT window component. */
  94:   int getY ()
  95:   {
  96:     return y;
  97:   }
  98: 
  99:   /** Returns the cached width of the AWT window component. */
 100:   int getWidth ()
 101:   {
 102:     return width;
 103:   }
 104: 
 105:   /** Returns the cached height of the AWT window component. */
 106:   int getHeight ()
 107:   {
 108:     return height;
 109:   }
 110: 
 111:   native void create (int type, boolean decorated, GtkWindowPeer parent);
 112: 
 113:   void create (int type, boolean decorated)
 114:   {
 115:     Window window = (Window) awtComponent;
 116:     GtkWindowPeer parent_peer = null;
 117:     Component parent = awtComponent.getParent();
 118:     x = awtComponent.getX();
 119:     y = awtComponent.getY();
 120:     height = awtComponent.getHeight();
 121:     width = awtComponent.getWidth();
 122: 
 123:     if (!window.isFocusableWindow())
 124:       type = GDK_WINDOW_TYPE_HINT_MENU;
 125: 
 126:     if (parent != null)
 127:       parent_peer = (GtkWindowPeer) awtComponent.getParent().getPeer();
 128: 
 129:     create (type, decorated, parent_peer);
 130:   }
 131: 
 132:   void create ()
 133:   {
 134:     // Create a normal undecorated window.
 135:     create (GDK_WINDOW_TYPE_HINT_NORMAL, false);
 136:   }
 137: 
 138:   void setParent ()
 139:   {
 140:     setVisible (awtComponent.isVisible ());
 141:     setEnabled (awtComponent.isEnabled ());
 142:   }
 143: 
 144:   void setVisibleAndEnabled ()
 145:   {
 146:   }
 147: 
 148:   public native void setVisibleNative (boolean b);
 149:   public native void setVisibleNativeUnlocked (boolean b);
 150: 
 151:   native void connectSignals ();
 152: 
 153:   public GtkWindowPeer (Window window)
 154:   {
 155:     super (window);
 156:     // Set reasonable font for the window.
 157:     window.setFont(new Font("Dialog", Font.PLAIN, 12));
 158:   }
 159: 
 160:   public native void toBack();
 161:   public native void toFront();
 162: 
 163:   native void nativeSetBounds (int x, int y, int width, int height);
 164:   native void nativeSetBoundsUnlocked (int x, int y, int width, int height);
 165:   native void nativeSetLocation (int x, int y);
 166:   native void nativeSetLocationUnlocked (int x, int y);
 167: 
 168:   // Called from show.
 169:   protected void setLocation (int x, int y)
 170:   {
 171:     nativeSetLocation (x, y);
 172:   }
 173: 
 174:   public void setBounds (int x, int y, int width, int height)
 175:   {
 176:     if (x != getX()     || y != getY() || width != getWidth()
 177:         || height != getHeight())
 178:       {
 179:         this.x = x;
 180:         this.y = y;
 181:         this.width = width;
 182:         this.height = height;
 183: 
 184:         nativeSetBounds (x, y,
 185:                          width - insets.left - insets.right,
 186:                          height - insets.top - insets.bottom);
 187:       }
 188:   }
 189: 
 190:   public void setTitle (String title)
 191:   {
 192:     gtkWindowSetTitle (title);
 193:   }
 194: 
 195:   // Called from setResizable
 196:   protected native void setSize (int width, int height);
 197: 
 198:   /**
 199:    * Needed by both GtkFramePeer and GtkDialogPeer subclasses, so
 200:    * implemented here. But never actually called on a GtkWindowPeer
 201:    * itself.
 202:    */
 203:   public void setResizable (boolean resizable)
 204:   {
 205:     // Call setSize; otherwise when resizable is changed from true to
 206:     // false the window will shrink to the dimensions it had before it
 207:     // was resizable.
 208:     x = awtComponent.getX();
 209:     y = awtComponent.getY();
 210:     width = awtComponent.getWidth();
 211:     height = awtComponent.getHeight();
 212:     setSize (width - insets.left - insets.right,
 213:              height - insets.top - insets.bottom);
 214:     gtkWindowSetResizable (resizable);
 215:   }
 216: 
 217:   protected void postInsetsChangedEvent (int top, int left,
 218:                                          int bottom, int right)
 219:   {
 220:     insets.top = top;
 221:     insets.left = left;
 222:     insets.bottom = bottom;
 223:     insets.right = right;
 224:   }
 225: 
 226:   // called back by native side: window_configure_cb
 227:   // only called from GTK thread
 228:   protected void postConfigureEvent (int x, int y, int width, int height)
 229:   {
 230:     int frame_x = x - insets.left;
 231:     int frame_y = y - insets.top;
 232:     int frame_width = width + insets.left + insets.right;
 233:     int frame_height = height + insets.top + insets.bottom;
 234: 
 235:     // Update the component's knowledge about the size.
 236:     // Important: Please look at the big comment in ComponentReshapeEvent
 237:     // to learn why we did it this way. If you change this code, make
 238:     // sure that the peer->AWT bounds update still works.
 239:     // (for instance: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29448 )
 240: 
 241:     // We do this befor we post the ComponentEvent, because (in Window)
 242:     // we invalidate() / revalidate() when a ComponentEvent is seen,
 243:     // and the AWT must already know about the new size then.
 244:     if (frame_x != this.x || frame_y != this.y || frame_width != this.width
 245:         || frame_height != this.height)
 246:       {
 247:         ComponentReshapeEvent ev = new ComponentReshapeEvent(awtComponent,
 248:                                                              frame_x,
 249:                                                              frame_y,
 250:                                                              frame_width,
 251:                                                              frame_height);
 252:         awtComponent.dispatchEvent(ev);
 253:       }
 254: 
 255:     if (frame_width != getWidth() || frame_height != getHeight())
 256:       {
 257:         this.width = frame_width;
 258:         this.height = frame_height;
 259:         q().postEvent(new ComponentEvent(awtComponent,
 260:                                          ComponentEvent.COMPONENT_RESIZED));
 261:       }
 262: 
 263:     if (frame_x != getX() || frame_y != getY())
 264:       {
 265:         this.x = frame_x;
 266:         this.y = frame_y;
 267:         q().postEvent(new ComponentEvent(awtComponent,
 268:                                          ComponentEvent.COMPONENT_MOVED));
 269:       }
 270: 
 271:   }
 272: 
 273:   public void show ()
 274:   {
 275:     x = awtComponent.getX();
 276:     y = awtComponent.getY();
 277:     width = awtComponent.getWidth();
 278:     height = awtComponent.getHeight();
 279:     setLocation(x, y);
 280:     setVisible (true);
 281:   }
 282: 
 283:   void postWindowEvent (int id, Window opposite, int newState)
 284:   {
 285:     if (id == WindowEvent.WINDOW_STATE_CHANGED)
 286:       {
 287:         if (windowState != newState)
 288:           {
 289:             // Post old styleWindowEvent with WINDOW_ICONIFIED or
 290:             // WINDOW_DEICONIFIED if appropriate.
 291:             if ((windowState & Frame.ICONIFIED) != 0
 292:                 && (newState & Frame.ICONIFIED) == 0)
 293:               q().postEvent(new WindowEvent((Window) awtComponent,
 294:                                             WindowEvent.WINDOW_DEICONIFIED,
 295:                                             opposite, 0, 0));
 296:             else if ((windowState & Frame.ICONIFIED) == 0
 297:                 && (newState & Frame.ICONIFIED) != 0)
 298:               q().postEvent(new WindowEvent((Window) awtComponent,
 299:                                             WindowEvent.WINDOW_ICONIFIED,
 300:                                             opposite, 0, 0));
 301:             // Post new-style WindowStateEvent.
 302:             q().postEvent (new WindowEvent ((Window) awtComponent, id,
 303:                                             opposite, windowState, newState));
 304:             windowState = newState;
 305:           }
 306:       }
 307:     else
 308:       q().postEvent (new WindowEvent ((Window) awtComponent, id, opposite));
 309:   }
 310: 
 311:   /**
 312:    * Update the always-on-top status of the native window.
 313:    */
 314:   public void updateAlwaysOnTop()
 315:   {
 316:     gtkWindowSetAlwaysOnTop( ((Window)awtComponent).isAlwaysOnTop() );
 317:   }
 318: 
 319:   protected void postExposeEvent (int x, int y, int width, int height)
 320:   {
 321:     // Translate GTK co-ordinates, which do not include a window
 322:     // frame's insets, to AWT co-ordinates, which do include a window
 323:     // frame's insets.  GtkWindowPeer should always have all-zero
 324:     // insets but GtkFramePeer and GtkDialogPeer insets will be
 325:     // non-zero.
 326:     q().postEvent (new PaintEvent (awtComponent, PaintEvent.PAINT,
 327:                                    new Rectangle (x + insets.left,
 328:                                                   y + insets.top,
 329:                                                   width, height)));
 330:   }
 331: 
 332:   public boolean requestWindowFocus()
 333:   {
 334:     // TODO Auto-generated method stub
 335:     return false;
 336:   }
 337: 
 338:   public boolean requestFocus (Component request, boolean temporary,
 339:                                boolean allowWindowFocus, long time)
 340:   {
 341:     assert request == awtComponent || isLightweightDescendant(request);
 342:     boolean retval = false;
 343:     if (gtkWindowHasFocus())
 344:       {
 345:         KeyboardFocusManager kfm =
 346:           KeyboardFocusManager.getCurrentKeyboardFocusManager();
 347:         Component currentFocus = kfm.getFocusOwner();
 348:         if (currentFocus == request)
 349:           // Nothing to do in this trivial case.
 350:           retval = true;
 351:         else
 352:           {
 353:             // Requested component is a lightweight descendant of this one
 354:             // or the actual heavyweight.
 355:             // Since this (native) component is already focused, we simply
 356:             // change the actual focus and be done.
 357:             postFocusEvent(FocusEvent.FOCUS_GAINED, temporary);
 358:             retval = true;
 359:           }
 360:       }
 361:     else
 362:       {
 363:         if (allowWindowFocus)
 364:           {
 365:             retval = requestWindowFocus();
 366:           }
 367:       }
 368:     return retval;
 369:   }
 370: 
 371:   public Graphics getGraphics ()
 372:   {
 373:     Graphics g = super.getGraphics ();
 374:     // Translate AWT co-ordinates, which include a window frame's
 375:     // insets, to GTK co-ordinates, which do not include a window
 376:     // frame's insets.  GtkWindowPeer should always have all-zero
 377:     // insets but GtkFramePeer and GtkDialogPeer insets will be
 378:     // non-zero.
 379:     g.translate (-insets.left, -insets.top);
 380:     return g;
 381:   }
 382: 
 383:   protected void postMouseEvent(int id, long when, int mods, int x, int y,
 384:                                 int clickCount, boolean popupTrigger)
 385:   {
 386:     // Translate AWT co-ordinates, which include a window frame's
 387:     // insets, to GTK co-ordinates, which do not include a window
 388:     // frame's insets.  GtkWindowPeer should always have all-zero
 389:     // insets but GtkFramePeer and GtkDialogPeer insets will be
 390:     // non-zero.
 391:     super.postMouseEvent (id, when, mods,
 392:                           x + insets.left, y + insets.top,
 393:                           clickCount, popupTrigger);
 394:   }
 395: 
 396:   public Point getLocationOnScreen()
 397:   {
 398:     int point[] = new int[2];
 399:     if (Thread.currentThread() == GtkMainThread.mainThread)
 400:       gtkWindowGetLocationOnScreenUnlocked(point);
 401:     else
 402:       gtkWindowGetLocationOnScreen(point);
 403:     return new Point(point[0], point[1]);
 404:   }
 405: 
 406:   // We override this to keep it in sync with our internal
 407:   // representation.
 408:   public Rectangle getBounds()
 409:   {
 410:     return new Rectangle(x, y, width, height);
 411:   }
 412: 
 413:   public void updateIconImages()
 414:   {
 415:     // TODO: Implement properly.
 416:   }
 417: 
 418:   public void updateMinimumSize()
 419:   {
 420:     // TODO: Implement properly.
 421:   }
 422: 
 423:   public void setModalBlocked(java.awt.Dialog d, boolean b)
 424:   {
 425:     // TODO: Implement properly.
 426:   }
 427: 
 428:   public void updateFocusableWindowState()
 429:   {
 430:     // TODO: Implement properly.
 431:   }
 432: 
 433:   public void setAlwaysOnTop(boolean b)
 434:   {
 435:     // TODO: Implement properly.
 436:   }
 437: }