gtkpainter.java

来自「Mobile 应用程序使用 Java Micro Edition (Java M」· Java 代码 · 共 1,409 行 · 第 1/4 页

    //
    public void paintArrowButtonForeground(SynthContext context, Graphics g,
                                           int x, int y, int w, int h,
                                           int direction) {
        Region id = context.getRegion();
        Component c = context.getComponent();
        String name = c.getName();

        ArrowType arrowType = null;
        switch (direction) {
            case SwingConstants.NORTH:
                arrowType = ArrowType.UP; break;
            case SwingConstants.SOUTH:
                arrowType = ArrowType.DOWN; break;
            case SwingConstants.EAST:
                arrowType = ArrowType.RIGHT; break;
            case SwingConstants.WEST:
                arrowType = ArrowType.LEFT; break;
        }

        String detail = "arrow";
        if (name == "ScrollBar.button") {
            if (arrowType == ArrowType.UP || arrowType == ArrowType.DOWN) {
                detail = "vscrollbar";
            } else {
                detail = "hscrollbar";
            }
        } else if (name == "Spinner.nextButton" ||
                   name == "Spinner.previousButton") {
            detail = "spinbutton";
        } else if (name != "ComboBox.arrowButton") {
            assert false;
        }
        
        int gtkState = GTKLookAndFeel.synthStateToGTKState(
                id, context.getComponentState());
        ShadowType shadowType = (gtkState == SynthConstants.PRESSED ?
            ShadowType.IN : ShadowType.OUT);
        synchronized (UNIXToolkit.GTK_LOCK) {
            if (ENGINE.paintCachedImage(g, x, y, w, h,
                    gtkState, name, direction)) {
                return;
            }
            ENGINE.startPainting(g, x, y, w, h, gtkState, name, direction);
            ENGINE.paintArrow(g, context, id, gtkState,
                    shadowType, arrowType, detail, x, y, w, h);
            ENGINE.finishPainting();
        }
    }

    public void paintArrowButtonBackground(SynthContext context,
            Graphics g, int x, int y, int w, int h) {
        Region id = context.getRegion();
        AbstractButton button = (AbstractButton)context.getComponent();

        String name = button.getName();
        String detail = "button";
        int direction = SwingConstants.CENTER;
        if (name == "ScrollBar.button") {
            Integer prop = (Integer) 
                button.getClientProperty("__arrow_direction__"); 
            direction = (prop != null) ? 
                prop.intValue() : SwingConstants.WEST; 
            switch (direction) { 
            default: 
            case SwingConstants.EAST: 
            case SwingConstants.WEST: 
                detail = "hscrollbar"; 
                break; 
            case SwingConstants.NORTH: 
            case SwingConstants.SOUTH: 
                detail = "vscrollbar"; 
                break; 
            }
        } else if (name == "Spinner.previousButton") {
            detail = "spinbutton_down";
        } else if (name == "Spinner.nextButton") {
            detail = "spinbutton_up";
        } else if (name != "ComboBox.arrowButton") { 
            assert false;
        }

        int state = context.getComponentState(); 
        synchronized (UNIXToolkit.GTK_LOCK) { 
            if (ENGINE.paintCachedImage(g, x, y, w, h, id, 
                                        state, detail, direction)) 
            { 
                return; 
            } 
            ENGINE.startPainting(g, x, y, w, h, id, 
                                 state, detail, direction); 

            if (detail.startsWith("spin")) {
                /*
                 * The ubuntulooks engine (and presumably others) expect us to
                 * first draw the full "spinbutton" background, and then draw
                 * the individual "spinbutton_up/down" buttons on top of that.
                 * Note that it is the state of the JSpinner (not its arrow
                 * button) that determines how we draw this background.
                 */
                int spinState = button.getParent().isEnabled() ?
                    SynthConstants.ENABLED : SynthConstants.DISABLED;
                int mody = (detail == "spinbutton_up") ? y : y-h;
                int modh = h*2;
                ENGINE.paintBox(g, context, id, spinState,
                                ShadowType.IN, "spinbutton",
                                x, mody, w, modh);
            }

            int gtkState = GTKLookAndFeel.synthStateToGTKState(id, state); 
            ShadowType shadowType = ShadowType.OUT; 
            if ((gtkState & (SynthConstants.PRESSED | 
                             SynthConstants.SELECTED)) != 0) 
            { 
                shadowType = ShadowType.IN; 
            } 
            ENGINE.paintBox(g, context, id, gtkState, 
                            shadowType, detail, x, y, w, h); 
 
            ENGINE.finishPainting(); 
        }
    }


    //
    // LIST
    //
    public void paintListBackground(SynthContext context, Graphics g,
                                    int x, int y, int w, int h) {
        // Does not call into ENGINE for better performance
        fillArea(context, g, x, y, w, h, GTKColorType.TEXT_BACKGROUND);
    }
    
    public void paintMenuBarBackground(SynthContext context, Graphics g,
                                       int x, int y, int w, int h) {
        Region id = context.getRegion();
        synchronized (UNIXToolkit.GTK_LOCK) {
            if (ENGINE.paintCachedImage(g, x, y, w, h, id)) {
                return;
            }
            GTKStyle style = (GTKStyle)context.getStyle();
            int shadow = style.getClassSpecificIntValue(
                    context, "shadow-type", 2);
            ShadowType shadowType = SHADOWS[shadow];
            int gtkState = GTKLookAndFeel.synthStateToGTKState(
                    id, context.getComponentState());
            ENGINE.startPainting(g, x, y, w, h, id);
            ENGINE.paintBox(g, context, id, gtkState,
                shadowType, "menubar", x, y, w, h);
            ENGINE.finishPainting();
        }
    }

    //
    // MENU
    //
    public void paintMenuBackground(SynthContext context,
                                     Graphics g,
                                     int x, int y, int w, int h) {
        paintMenuItemBackground(context, g, x, y, w, h);
    }

    // This is called for both MENU and MENU_ITEM
    public void paintMenuItemBackground(SynthContext context,
                                     Graphics g,
                                     int x, int y, int w, int h) {
        int gtkState = GTKLookAndFeel.synthStateToGTKState(
                context.getRegion(), context.getComponentState());
        if (gtkState == SynthConstants.MOUSE_OVER) {
            Region id = Region.MENU_ITEM;
            synchronized (UNIXToolkit.GTK_LOCK) {
                if (! ENGINE.paintCachedImage(g, x, y, w, h, id)) {
                    ShadowType shadow = (GTKLookAndFeel.is2_2() ?
                        ShadowType.NONE : ShadowType.OUT);
                    ENGINE.startPainting(g, x, y, w, h, id);
                    ENGINE.paintBox(g, context, id, gtkState, shadow,
                            "menuitem", x, y, w, h);
                    ENGINE.finishPainting();
                }
            }
        }
    }

    public void paintPopupMenuBackground(SynthContext context, Graphics g,
                                        int x, int y, int w, int h) {
        Region id = context.getRegion();
        int gtkState = GTKLookAndFeel.synthStateToGTKState(
                id, context.getComponentState());
        synchronized (UNIXToolkit.GTK_LOCK) {
            if (ENGINE.paintCachedImage(g, x, y, w, h, id, gtkState)) {
                return;
            }
            ENGINE.startPainting(g, x, y, w, h, id, gtkState);
            ENGINE.paintBox(g, context, id, gtkState,
                    ShadowType.OUT, "menu", x, y, w, h);

            GTKStyle style = (GTKStyle)context.getStyle();
            int xThickness = style.getXThickness();
            int yThickness = style.getYThickness();
            ENGINE.paintBackground(g, context, id, gtkState,
                    style.getGTKColor(context, gtkState, GTKColorType.BACKGROUND),
                    x + xThickness, y + yThickness,
                    w - xThickness - xThickness, h - yThickness - yThickness);
            ENGINE.finishPainting();
        }
    }

    public void paintProgressBarBackground(SynthContext context,
                                            Graphics g,
                                            int x, int y, int w, int h) {
        Region id = context.getRegion();
        synchronized (UNIXToolkit.GTK_LOCK) {
            if (! ENGINE.paintCachedImage(g, x, y, w, h, id)) {
                ENGINE.startPainting(g, x, y, w, h, id);
                ENGINE.paintBox(g, context, id, SynthConstants.ENABLED,
                        ShadowType.IN, "trough", x, y, w, h);
                ENGINE.finishPainting();
            }
        }
    }

    public void paintProgressBarForeground(SynthContext context, Graphics g,
                                            int x, int y, int w, int h,
                                            int orientation) {
        Region id = context.getRegion();
        synchronized (UNIXToolkit.GTK_LOCK) {
            if (! ENGINE.paintCachedImage(g, x, y, w, h, id, "fg")) {
                ENGINE.startPainting(g, x, y, w, h, id, "fg");
                ENGINE.paintBox(g, context, id, SynthConstants.MOUSE_OVER,
                        ShadowType.OUT, "bar", x, y, w, h);
                ENGINE.finishPainting();
            }
        }
    }

    public void paintViewportBorder(SynthContext context, Graphics g,
                                           int x, int y, int w, int h) {
        Region id = context.getRegion();
        synchronized (UNIXToolkit.GTK_LOCK) {
            if (! ENGINE.paintCachedImage(g, x, y, w, h, id)) {
                ENGINE.startPainting(g, x, y, w, h, id);
                ENGINE.paintShadow(g, context, id, SynthConstants.ENABLED,
                        ShadowType.IN, "scrolled_window", x, y, w, h);
                ENGINE.finishPainting();
            }
        }
    }

    public void paintScrollPaneBorder(SynthContext context, Graphics g,
                                           int x, int y, int w, int h) {
        paintViewportBorder(context, g, x, y, w, h);
    }

    public void paintSeparatorBackground(SynthContext context,
                                          Graphics g,
                                          int x, int y, int w, int h,
                                         int orientation) {
        Region id = context.getRegion();
        int state = context.getComponentState();
        JComponent c = context.getComponent();

        /*
         * Note: In theory, the style's x/y thickness values would determine
         * the width of the separator content.  In practice, however, some
         * engines will render a line that is wider than the corresponding
         * thickness value.  For example, ubuntulooks reports x/y thickness
         * values of 1 for separators, but always renders a 2-pixel wide line.
         * As a result of all this, we need to be careful not to restrict
         * the w/h values below too much, so that the full thickness of the
         * rendered line will be captured by our image caching code.
         */
        String detail;
        if (c instanceof JToolBar.Separator) {
            /*
             * GTK renders toolbar separators differently in that an
             * artificial padding is added to each end of the separator.
             * The value of 0.2f below is derived from the source code of
             * gtktoolbar.c in the current version of GTK+ (2.8.20 at the
             * time of this writing).  Specifically, the relevant values are:
             *     SPACE_LINE_DIVISION 10.0
             *     SPACE_LINE_START     2.0
             *     SPACE_LINE_END       8.0
             * These are used to determine the distance from the top (or left)
             * edge of the toolbar to the other edge.  So for example, the
             * starting/top point of a vertical separator is 2/10 of the
             * height of a horizontal toolbar away from the top edge, which
             * is how we arrive at 0.2f below.  Likewise, the ending/bottom
             * point is 8/10 of the height away from the top edge, or in other
             * words, it is 2/10 away from the bottom edge, which is again
             * how we arrive at the 0.2f value below.
             *
             * The separator is also centered horizontally or vertically,
             * depending on its orientation.  This was determined empirically
             * and by examining the code referenced above.
             */
            detail = "toolbar";
            float pct = 0.2f;
            JToolBar.Separator sep = (JToolBar.Separator)c;
            Dimension size = sep.getSeparatorSize();
            GTKStyle style = (GTKStyle)context.getStyle();
            if (orientation == JSeparator.HORIZONTAL) {
                x += (int)(w * pct);
                w -= (int)(w * pct * 2);
                y += (size.height - style.getYThickness()) / 2;
            } else {
                y += (int)(h * pct);
                h -= (int)(h * pct * 2);
                x += (size.width - style.getXThickness()) / 2;
            }
        } else {
            // For regular/menu separators, we simply subtract out the insets.
            detail = "separator";
            Insets insets = c.getInsets();
            x += insets.left;
            y += insets.top;
            if (orientation == JSeparator.HORIZONTAL) {
                w -= (insets.left + insets.right);
            } else {
                h -= (insets.top + insets.bottom);
            }
        }

        synchronized (UNIXToolkit.GTK_LOCK) {
            if (! ENGINE.paintCachedImage(g, x, y, w, h, id,
                                          state, detail, orientation)) {
                ENGINE.startPainting(g, x, y, w, h, id,
                                     state, detail, orientation);
                if (orientation == JSeparator.HORIZONTAL) {
                    ENGINE.paintHline(g, context, id, state,
                                      detail, x, y, w, h);
                } else {
                    ENGINE.paintVline(g, context, id, state,
                                      detail, x, y, w, h);
                }
                ENGINE.finishPainting();
            }
        }
    }

    public void paintSliderTrackBackground(SynthContext context,
                                       Graphics g,
                                       int x, int y, int w,int h) {
        Region id = context.getRegion();
        int state = context.getComponentState();

        // For focused sliders, we paint focus rect outside the bounds passed.
        // Need to adjust for that.
        boolean focused = ((state & SynthConstants.FOCUSED) != 0);
        int focusSize = 0;
        if (focused) {
            GTKStyle style = (GTKStyle)context.getStyle();
            focusSize = style.getClassSpecificIntValue(
                                context, "focus-line-width", 1) +