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Diffstat (limited to 'libjava/classpath/java/awt/peer/ComponentPeer.java')
| -rw-r--r-- | libjava/classpath/java/awt/peer/ComponentPeer.java | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/peer/ComponentPeer.java b/libjava/classpath/java/awt/peer/ComponentPeer.java new file mode 100644 index 00000000000..7ed8f6051db --- /dev/null +++ b/libjava/classpath/java/awt/peer/ComponentPeer.java @@ -0,0 +1,187 @@ +/* ComponentPeer.java -- Toplevel component peer + Copyright (C) 1999, 2000, 2002 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package java.awt.peer; + +import java.awt.AWTEvent; +import java.awt.AWTException; +import java.awt.BufferCapabilities; +import java.awt.Color; +import java.awt.Component; +import java.awt.Cursor; +import java.awt.Dimension; +import java.awt.Font; +import java.awt.FontMetrics; +import java.awt.Graphics; +import java.awt.GraphicsConfiguration; +import java.awt.Image; +import java.awt.Point; +import java.awt.Toolkit; +import java.awt.event.PaintEvent; +import java.awt.image.ColorModel; +import java.awt.image.ImageObserver; +import java.awt.image.ImageProducer; +import java.awt.image.VolatileImage; + +public interface ComponentPeer +{ + int checkImage(Image img, int width, int height, + ImageObserver ob); + Image createImage(ImageProducer prod); + Image createImage(int width, int height); + void disable(); + void dispose(); + void enable(); + ColorModel getColorModel(); + FontMetrics getFontMetrics(Font f); + Graphics getGraphics(); + Point getLocationOnScreen(); + Dimension getMinimumSize(); + Dimension getPreferredSize(); + Toolkit getToolkit(); + void handleEvent(AWTEvent e); + void hide(); + + /** + * Part of the earlier 1.1 API, replaced by isFocusable(). + */ + boolean isFocusTraversable(); + boolean isFocusable(); + Dimension minimumSize(); + Dimension preferredSize(); + void paint(Graphics graphics); + boolean prepareImage(Image img, int width, int height, + ImageObserver ob); + void print(Graphics graphics); + void repaint(long tm, int x, int y, int width, int height); + + /** + * Part of the earlier 1.1 API, apparently replaced by argument + * form of the same method. + */ + void requestFocus(); + boolean requestFocus (Component source, boolean bool1, boolean bool2, long x); + + void reshape(int x, int y, int width, int height); + void setBackground(Color color); + void setBounds(int x, int y, int width, int height); + + /** + * Part of the earlier 1.1 API, apparently no longer needed. + */ + void setCursor(Cursor cursor); + + void setEnabled(boolean enabled); + void setFont(Font font); + void setForeground(Color color); + void setVisible(boolean visible); + void show(); + + /** + * Get the graphics configuration of the component. The color model + * of the component can be derived from the configuration. + */ + GraphicsConfiguration getGraphicsConfiguration(); + + /** + * Part of an older API, no longer needed. + */ + void setEventMask (long mask); + + // Methods below are introduced since 1.1 + boolean isObscured(); + boolean canDetermineObscurity(); + void coalescePaintEvent(PaintEvent e); + void updateCursorImmediately(); + boolean handlesWheelScrolling(); + + /** + * A convenience method that creates a volatile image. The volatile + * image is created on the screen device on which this component is + * displayed, in the device's current graphics configuration. + * + * @param width width of the image + * @param height height of the image + * + * @see VolatileImage + * + * @since 1.2 + */ + VolatileImage createVolatileImage(int width, int height); + + /** + * Create a number of image buffers that implement a buffering + * strategy according to the given capabilities. + * + * @param numBuffers the number of buffers + * @param caps the buffering capabilities + * + * @throws AWTException if the specified buffering strategy is not + * implemented + * + * @since 1.2 + */ + void createBuffers(int numBuffers, BufferCapabilities caps) + throws AWTException; + + /** + * Return the back buffer of this component. + * + * @return the back buffer of this component. + * + * @since 1.2 + */ + Image getBackBuffer(); + + /** + * Perform a page flip, leaving the contents of the back buffer in + * the specified state. + * + * @param contents the state in which to leave the back buffer + * + * @since 1.2 + */ + void flip(BufferCapabilities.FlipContents contents); + + /** + * Destroy the resources created by createBuffers. + * + * @since 1.2 + */ + void destroyBuffers(); +} |
