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1: /* GtkScrollPanePeer.java -- Implements ScrollPanePeer with GTK 2: Copyright (C) 1998, 1999, 2005 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 java.awt.Adjustable; 42: import java.awt.Dimension; 43: import java.awt.ScrollPane; 44: import java.awt.peer.ScrollPanePeer; 45: 46: public class GtkScrollPanePeer extends GtkContainerPeer 47: implements ScrollPanePeer 48: { 49: native void create (int width, int height); 50: 51: void create () 52: { 53: create (awtComponent.getWidth (), awtComponent.getHeight ()); 54: } 55: 56: // native void gtkScrolledWindowSetScrollPosition(int x, int y); 57: native void gtkScrolledWindowSetHScrollIncrement (int u); 58: native void gtkScrolledWindowSetVScrollIncrement (int u); 59: 60: public GtkScrollPanePeer (ScrollPane sp) 61: { 62: super (sp); 63: 64: setPolicy (sp.getScrollbarDisplayPolicy ()); 65: } 66: 67: native void setPolicy (int policy); 68: public void childResized (int width, int height) 69: { 70: int dim[] = new int[2]; 71: 72: gtkWidgetGetDimensions (dim); 73: 74: // If the child is in this range, GTK adds both scrollbars, but 75: // the AWT doesn't. So set the peer's scroll policy to 76: // GTK_POLICY_NEVER. 77: if ((width > dim[0] - getVScrollbarWidth () 78: && width <= dim[0]) 79: && (height > dim[1] - getHScrollbarHeight () 80: && height <= dim[1])) 81: setPolicy (ScrollPane.SCROLLBARS_NEVER); 82: else 83: setPolicy (((ScrollPane) awtComponent).getScrollbarDisplayPolicy ()); 84: } 85: 86: public native int getHScrollbarHeight(); 87: public native int getVScrollbarWidth(); 88: public native void setScrollPosition(int x, int y); 89: 90: public Dimension getPreferredSize () 91: { 92: return awtComponent.getSize(); 93: } 94: 95: public void setUnitIncrement (Adjustable adj, int u) 96: { 97: if (adj.getOrientation()==Adjustable.HORIZONTAL) 98: gtkScrolledWindowSetHScrollIncrement (u); 99: else 100: gtkScrolledWindowSetVScrollIncrement (u); 101: } 102: 103: public void setValue (Adjustable adj, int v) 104: { 105: // System.out.println("SPP: setVal: "+adj+":"+v); 106: // Point p=myScrollPane.getScrollPosition (); 107: // if (adj.getOrientation()==Adjustable.HORIZONTAL) 108: // gtkScrolledWindowSetScrollPosition (v,p.y); 109: // else 110: // gtkScrolledWindowSetScrollPosition (p.x,v); 111: // adj.setValue(v); 112: } 113: }