gtknativeengine.java

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/*
 * @(#)GTKNativeEngine.java	1.11 07/03/15
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.sun.java.swing.plaf.gtk;

import javax.swing.plaf.synth.*;
import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
import com.sun.java.swing.plaf.gtk.GTKConstants.ArrowType;
import com.sun.java.swing.plaf.gtk.GTKConstants.ExpanderStyle;
import com.sun.java.swing.plaf.gtk.GTKConstants.Orientation;
import com.sun.java.swing.plaf.gtk.GTKConstants.PositionType;
import com.sun.java.swing.plaf.gtk.GTKConstants.ShadowType;
import com.sun.java.swing.plaf.gtk.GTKConstants.WidgetType;
import com.sun.java.swing.plaf.gtk.GTKConstants.TextDirection;

import javax.imageio.*;
import java.io.*;
import java.util.HashMap;
import sun.awt.image.SunWritableRaster;
import sun.swing.ImageCache;

/**
 * GTKNativeEngine delegates all painting job to native GTK libraries.
 *
 * Painting with GTKNativeEngine looks like this:
 * First, startPainting() is called. It prepares an offscreen buffer of the
 *   required size.
 * Then, any number of paintXXX() methods can be called. They effectively ignore
 *   the Graphics parameter and draw to the offscreen buffer.
 * Finally, finishPainting() should be called. It fills the data buffer passed
 *   in with the image data.
 *
 * @version 1.11, 03/15/07
 * @author Josh Outwater
 */
public class GTKNativeEngine extends GTKEngine {
    /** Size of the image cache */
    private static final int CACHE_SIZE = 50;

    private static HashMap regionToWidgetTypeMap;
    private ImageCache cache = new ImageCache(CACHE_SIZE);
    private int x0, y0, w0, h0;
    private Graphics graphics;
    private Object[] cacheArgs;
    
    private native void native_paint_arrow(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height, int arrowType);
    private native void native_paint_box(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height, int synth_state, int dir);
    private native void native_paint_box_gap(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height,
            int gapSide, int gapX, int gapWidth);
    private native void native_paint_check(
            int widgetType, int synthState, String detail,
            int x, int y, int width, int height);
    private native void native_paint_expander(
            int widgetType, int state, String detail,
            int x, int y, int width, int height, int expanderStyle);
    private native void native_paint_extension(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height, int placement);
    private native void native_paint_flat_box(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height, boolean hasFocus);
    private native void native_paint_focus(
            int widgetType, int state, String detail,
            int x, int y, int width, int height);
    private native void native_paint_handle(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height, int orientation);
    private native void native_paint_hline(
            int widgetType, int state, String detail,
            int x, int y, int width, int height);
    private native void native_paint_option(
            int widgetType, int synthState, String detail,
            int x, int y, int width, int height);
    private native void native_paint_shadow(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height, int synthState, int dir);
    private native void native_paint_slider(
            int widgetType, int state, int shadowType, String detail,
            int x, int y, int width, int height, int orientation);
    private native void native_paint_vline(
            int widgetType, int state, String detail,
            int x, int y, int width, int height);
    private native void native_paint_background(
            int widgetType, int state, int x, int y, int width, int height);
    private native Object native_get_gtk_setting(int property);

    private native void nativeStartPainting(int w, int h);
    private native int nativeFinishPainting(int[] buffer, int width, int height);
    private native void native_switch_theme();


    static {
        // Make sure the awt toolkit is loaded so we have access to native
        // methods.
        Toolkit.getDefaultToolkit();
        
        // Initialize regionToWidgetTypeMap
        regionToWidgetTypeMap = new HashMap(50);
        regionToWidgetTypeMap.put(Region.ARROW_BUTTON, new WidgetType[] { 
            WidgetType.SPINNER_ARROW_BUTTON, 
            WidgetType.COMBO_BOX_ARROW_BUTTON, 
            WidgetType.HSCROLL_BAR_BUTTON_LEFT, 
            WidgetType.HSCROLL_BAR_BUTTON_RIGHT, 
            WidgetType.VSCROLL_BAR_BUTTON_UP, 
            WidgetType.VSCROLL_BAR_BUTTON_DOWN});
        regionToWidgetTypeMap.put(Region.BUTTON, WidgetType.BUTTON);
        regionToWidgetTypeMap.put(Region.CHECK_BOX, WidgetType.CHECK_BOX);
        regionToWidgetTypeMap.put(Region.CHECK_BOX_MENU_ITEM,
                                  WidgetType.CHECK_BOX_MENU_ITEM);
        regionToWidgetTypeMap.put(Region.COLOR_CHOOSER, WidgetType.COLOR_CHOOSER);
        regionToWidgetTypeMap.put(Region.FILE_CHOOSER, WidgetType.OPTION_PANE);
        regionToWidgetTypeMap.put(Region.COMBO_BOX, WidgetType.COMBO_BOX);
        regionToWidgetTypeMap.put(Region.DESKTOP_ICON, WidgetType.DESKTOP_ICON);
        regionToWidgetTypeMap.put(Region.DESKTOP_PANE, WidgetType.DESKTOP_PANE);
        regionToWidgetTypeMap.put(Region.EDITOR_PANE, WidgetType.EDITOR_PANE);
        regionToWidgetTypeMap.put(Region.FORMATTED_TEXT_FIELD, new WidgetType[] { 
            WidgetType.FORMATTED_TEXT_FIELD, WidgetType.SPINNER_TEXT_FIELD}); 
        regionToWidgetTypeMap.put(GTKRegion.HANDLE_BOX, WidgetType.HANDLE_BOX);
        regionToWidgetTypeMap.put(Region.INTERNAL_FRAME,
                                  WidgetType.INTERNAL_FRAME);
        regionToWidgetTypeMap.put(Region.INTERNAL_FRAME_TITLE_PANE,
                                  WidgetType.INTERNAL_FRAME_TITLE_PANE);
        regionToWidgetTypeMap.put(Region.LABEL, new WidgetType[] { 
            WidgetType.LABEL, WidgetType.COMBO_BOX_TEXT_FIELD}); 
        regionToWidgetTypeMap.put(Region.LIST, WidgetType.LIST);
        regionToWidgetTypeMap.put(Region.MENU, WidgetType.MENU);
        regionToWidgetTypeMap.put(Region.MENU_BAR, WidgetType.MENU_BAR);
        regionToWidgetTypeMap.put(Region.MENU_ITEM, WidgetType.MENU_ITEM);
        regionToWidgetTypeMap.put(Region.MENU_ITEM_ACCELERATOR,
                                  WidgetType.MENU_ITEM_ACCELERATOR);
        regionToWidgetTypeMap.put(Region.OPTION_PANE, WidgetType.OPTION_PANE);
        regionToWidgetTypeMap.put(Region.PANEL, WidgetType.PANEL);
        regionToWidgetTypeMap.put(Region.PASSWORD_FIELD,
                                  WidgetType.PASSWORD_FIELD);
        regionToWidgetTypeMap.put(Region.POPUP_MENU, WidgetType.POPUP_MENU);
        regionToWidgetTypeMap.put(Region.POPUP_MENU_SEPARATOR,
                                  WidgetType.POPUP_MENU_SEPARATOR);
        regionToWidgetTypeMap.put(Region.PROGRESS_BAR, WidgetType.PROGRESS_BAR);
        regionToWidgetTypeMap.put(Region.RADIO_BUTTON, WidgetType.RADIO_BUTTON);
        regionToWidgetTypeMap.put(Region.RADIO_BUTTON_MENU_ITEM,
                                  WidgetType.RADIO_BUTTON_MENU_ITEM);
        regionToWidgetTypeMap.put(Region.ROOT_PANE, WidgetType.ROOT_PANE);
        regionToWidgetTypeMap.put(Region.SCROLL_BAR, new WidgetType[] {
            WidgetType.HSCROLL_BAR, WidgetType.VSCROLL_BAR});
        regionToWidgetTypeMap.put(Region.SCROLL_BAR_THUMB, new WidgetType[] {
            WidgetType.HSCROLL_BAR_THUMB, WidgetType.VSCROLL_BAR_THUMB});
        regionToWidgetTypeMap.put(Region.SCROLL_BAR_TRACK, new WidgetType[] {
            WidgetType.HSCROLL_BAR_TRACK, WidgetType.VSCROLL_BAR_TRACK});
        regionToWidgetTypeMap.put(Region.SCROLL_PANE, WidgetType.SCROLL_PANE);
        regionToWidgetTypeMap.put(Region.SEPARATOR, new WidgetType[] {
            WidgetType.HSEPARATOR, WidgetType.VSEPARATOR});
        regionToWidgetTypeMap.put(Region.SLIDER, new WidgetType[] {
            WidgetType.HSLIDER, WidgetType.VSLIDER});
        regionToWidgetTypeMap.put(Region.SLIDER_THUMB, new WidgetType[] {
            WidgetType.HSLIDER_THUMB, WidgetType.VSLIDER_THUMB});
        regionToWidgetTypeMap.put(Region.SLIDER_TRACK, new WidgetType[] {
            WidgetType.HSLIDER_TRACK, WidgetType.VSLIDER_TRACK});
        regionToWidgetTypeMap.put(Region.SPINNER, WidgetType.SPINNER);
        regionToWidgetTypeMap.put(Region.SPLIT_PANE, WidgetType.SPLIT_PANE);
        regionToWidgetTypeMap.put(Region.SPLIT_PANE_DIVIDER, new WidgetType[] {
            WidgetType.HSPLIT_PANE_DIVIDER, WidgetType.VSPLIT_PANE_DIVIDER});
        regionToWidgetTypeMap.put(Region.TABBED_PANE, WidgetType.TABBED_PANE);
        regionToWidgetTypeMap.put(Region.TABBED_PANE_CONTENT,
                                  WidgetType.TABBED_PANE_CONTENT);
        regionToWidgetTypeMap.put(Region.TABBED_PANE_TAB,
                                  WidgetType.TABBED_PANE_TAB);
        regionToWidgetTypeMap.put(Region.TABBED_PANE_TAB_AREA,
                                  WidgetType.TABBED_PANE_TAB_AREA);
        regionToWidgetTypeMap.put(Region.TABLE, WidgetType.TABLE);
        regionToWidgetTypeMap.put(Region.TABLE_HEADER, WidgetType.TABLE_HEADER);
        regionToWidgetTypeMap.put(Region.TEXT_AREA, WidgetType.TEXT_AREA);
        regionToWidgetTypeMap.put(Region.TEXT_FIELD, new WidgetType[] { 
            WidgetType.TEXT_FIELD, WidgetType.COMBO_BOX_TEXT_FIELD});
        regionToWidgetTypeMap.put(Region.TEXT_PANE, WidgetType.TEXT_PANE);
        regionToWidgetTypeMap.put(Region.TOGGLE_BUTTON, WidgetType.TOGGLE_BUTTON);
        regionToWidgetTypeMap.put(Region.TOOL_BAR, WidgetType.TOOL_BAR);
        regionToWidgetTypeMap.put(Region.TOOL_BAR_CONTENT, WidgetType.TOOL_BAR);
        regionToWidgetTypeMap.put(Region.TOOL_BAR_DRAG_WINDOW,
                                  WidgetType.TOOL_BAR_DRAG_WINDOW);
        regionToWidgetTypeMap.put(Region.TOOL_BAR_SEPARATOR,
                                  WidgetType.TOOL_BAR_SEPARATOR);
        regionToWidgetTypeMap.put(Region.TOOL_TIP, WidgetType.TOOL_TIP);
        regionToWidgetTypeMap.put(Region.TREE, WidgetType.TREE);
        regionToWidgetTypeMap.put(Region.TREE_CELL, WidgetType.TREE_CELL);
        regionToWidgetTypeMap.put(Region.VIEWPORT, WidgetType.VIEWPORT);
    }

    /** Translate Region and JComponent into WidgetType ordinals */
    static WidgetType getWidgetType(JComponent c, Region id) {
        Object value = regionToWidgetTypeMap.get(id);

        if (value instanceof WidgetType) {
            return (WidgetType)value;
        }

        WidgetType[] widgets = (WidgetType[])value;
        if (c == null ) {
            return widgets[0];
        }
        
        if (c instanceof JScrollBar) {
            return (((JScrollBar)c).getOrientation() == JScrollBar.HORIZONTAL) ?
                widgets[0] : widgets[1];
        } else if (c instanceof JSeparator) {
            JSeparator separator = (JSeparator)c; 

            /* We should return correct WidgetType if the separator is inserted 
             * in Menu/PopupMenu/ToolBar. BugID: 6465603 
             */ 
            if (separator.getParent() instanceof JPopupMenu) { 
               return WidgetType.POPUP_MENU_SEPARATOR; 
            } else if (separator.getParent() instanceof JToolBar) { 
                return WidgetType.TOOL_BAR_SEPARATOR; 
            } 

            return (separator.getOrientation() == JSeparator.HORIZONTAL) ? 
                widgets[0] : widgets[1];
        } else if (c instanceof JSlider) {
            return (((JSlider)c).getOrientation() == JSlider.HORIZONTAL) ?
                widgets[0] : widgets[1];
        } else if (c instanceof JSplitPane) {
            return (((JSplitPane)c).getOrientation() == JSplitPane.HORIZONTAL_SPLIT) ?
                widgets[1] : widgets[0];
        } else if (id == Region.LABEL || id == Region.TEXT_FIELD) {
            String name = c.getName();
            if (name != null && name.startsWith("ComboBox")) {
                return widgets[1];
            } else {
                return widgets[0];
            }
        } else if (id == Region.FORMATTED_TEXT_FIELD) {
            String name = c.getName();
            if (name != null && name.startsWith("Spinner")) {
                return widgets[1];
            } else {
                return widgets[0];
            }
        } else if (id == Region.ARROW_BUTTON) { 
            if (c.getParent() instanceof JScrollBar) { 
                Integer prop = (Integer)c.getClientProperty("__arrow_direction__"); 
                int dir = (prop != null) ? 
                    prop.intValue() : SwingConstants.WEST; 
                switch (dir) { 
                case SwingConstants.WEST: 
                    return WidgetType.HSCROLL_BAR_BUTTON_LEFT; 
                case SwingConstants.EAST: 
                    return WidgetType.HSCROLL_BAR_BUTTON_RIGHT; 
                case SwingConstants.NORTH: 
                    return WidgetType.VSCROLL_BAR_BUTTON_UP; 
                case SwingConstants.SOUTH: 
                    return WidgetType.VSCROLL_BAR_BUTTON_DOWN; 
                default: 
                    return null; 
                }