protected void drawBorders()

in fop-core/src/main/java/org/apache/fop/render/AbstractPathOrientedRenderer.java [386:556]
159 lines of code
33 McCabe index (conditional complexity)

    protected void drawBorders(Rectangle2D.Float borderRect,
            BorderProps bpsTop, BorderProps bpsBottom, BorderProps bpsLeft, BorderProps bpsRight,
            Color innerBackgroundColor) {
        //TODO generalize each of the four conditions into using a parameterized drawBorder()
        boolean[] border = new boolean[] {
                (bpsTop != null), (bpsRight != null),
                (bpsBottom != null), (bpsLeft != null)};
        float startx = borderRect.x;
        float starty = borderRect.y;
        float width = borderRect.width;
        float height = borderRect.height;
        float[] borderWidth = new float[] {
            (border[TOP] ? bpsTop.width / 1000f : 0.0f),
            (border[RIGHT] ? bpsRight.width / 1000f : 0.0f),
            (border[BOTTOM] ? bpsBottom.width / 1000f : 0.0f),
            (border[LEFT] ? bpsLeft.width / 1000f : 0.0f)};
        float[] clipw = new float[] {
            BorderProps.getClippedWidth(bpsTop) / 1000f,
            BorderProps.getClippedWidth(bpsRight) / 1000f,
            BorderProps.getClippedWidth(bpsBottom) / 1000f,
            BorderProps.getClippedWidth(bpsLeft) / 1000f};

        starty += clipw[TOP];
        height -= clipw[TOP];
        height -= clipw[BOTTOM];
        startx += clipw[LEFT];
        width -= clipw[LEFT];
        width -= clipw[RIGHT];

        boolean[] slant = new boolean[] {
            (border[LEFT] && border[TOP]),
            (border[TOP] && border[RIGHT]),
            (border[RIGHT] && border[BOTTOM]),
            (border[BOTTOM] && border[LEFT])};
        if (bpsTop != null) {
            endTextObject();

            float sx1 = startx;
            float sx2 = (slant[TOP] ? sx1 + borderWidth[LEFT] - clipw[LEFT] : sx1);
            float ex1 = startx + width;
            float ex2 = (slant[RIGHT] ? ex1 - borderWidth[RIGHT] + clipw[RIGHT] : ex1);
            float outery = starty - clipw[TOP];
            float clipy = outery + clipw[TOP];
            float innery = outery + borderWidth[TOP];

            saveGraphicsState();
            moveTo(sx1, clipy);
            float sx1a = sx1;
            float ex1a = ex1;

            if (isCollapseOuter(bpsTop)) {
                if (isCollapseOuter(bpsLeft)) {
                    sx1a -= clipw[LEFT];
                }
                if (isCollapseOuter(bpsRight)) {
                    ex1a += clipw[RIGHT];
                }
                lineTo(sx1a, outery);
                lineTo(ex1a, outery);
            }
            lineTo(ex1, clipy);
            lineTo(ex2, innery);
            lineTo(sx2, innery);
            closePath();
            clip();
            drawBorderLine(sx1a, outery, ex1a, innery, true, true,
                    bpsTop.style, bpsTop.color);
            restoreGraphicsState();
        }
        if (bpsRight != null) {
            endTextObject();

            float sy1 = starty;
            float sy2 = (slant[RIGHT] ? sy1 + borderWidth[TOP] - clipw[TOP] : sy1);
            float ey1 = starty + height;
            float ey2 = (slant[BOTTOM] ? ey1 - borderWidth[BOTTOM] + clipw[BOTTOM] : ey1);
            float outerx = startx + width + clipw[RIGHT];
            float clipx = outerx - clipw[RIGHT];
            float innerx = outerx - borderWidth[RIGHT];

            saveGraphicsState();
            moveTo(clipx, sy1);
            float sy1a = sy1;
            float ey1a = ey1;
            if (isCollapseOuter(bpsRight)) {
                if (isCollapseOuter(bpsTop)) {
                    sy1a -= clipw[TOP];
                }
                if (isCollapseOuter(bpsBottom)) {
                    ey1a += clipw[BOTTOM];
                }
                lineTo(outerx, sy1a);
                lineTo(outerx, ey1a);
            }
            lineTo(clipx, ey1);
            lineTo(innerx, ey2);
            lineTo(innerx, sy2);
            closePath();
            clip();
            drawBorderLine(innerx, sy1a, outerx, ey1a, false, false,
                           bpsRight.style, bpsRight.color);
            restoreGraphicsState();
        }
        if (bpsBottom != null) {
            endTextObject();

            float sx1 = startx;
            float sx2 = (slant[LEFT] ? sx1 + borderWidth[LEFT] - clipw[LEFT] : sx1);
            float ex1 = startx + width;
            float ex2 = (slant[BOTTOM] ? ex1 - borderWidth[RIGHT] + clipw[RIGHT] : ex1);
            float outery = starty + height + clipw[BOTTOM];
            float clipy = outery - clipw[BOTTOM];
            float innery = outery - borderWidth[BOTTOM];

            saveGraphicsState();
            moveTo(ex1, clipy);
            float sx1a = sx1;
            float ex1a = ex1;
            if (isCollapseOuter(bpsBottom)) {
                if (isCollapseOuter(bpsLeft)) {
                    sx1a -= clipw[LEFT];
                }
                if (isCollapseOuter(bpsRight)) {
                    ex1a += clipw[RIGHT];
                }
                lineTo(ex1a, outery);
                lineTo(sx1a, outery);
            }
            lineTo(sx1, clipy);
            lineTo(sx2, innery);
            lineTo(ex2, innery);
            closePath();
            clip();
            drawBorderLine(sx1a, innery, ex1a, outery, true, false,
                           bpsBottom.style, bpsBottom.color);
            restoreGraphicsState();
        }
        if (bpsLeft != null) {
            endTextObject();

            float sy1 = starty;
            float sy2 = (slant[TOP] ? sy1 + borderWidth[TOP] - clipw[TOP] : sy1);
            float ey1 = sy1 + height;
            float ey2 = (slant[LEFT] ? ey1 - borderWidth[BOTTOM] + clipw[BOTTOM] : ey1);
            float outerx = startx - clipw[LEFT];
            float clipx = outerx + clipw[LEFT];
            float innerx = outerx + borderWidth[LEFT];

            saveGraphicsState();
            moveTo(clipx, ey1);
            float sy1a = sy1;
            float ey1a = ey1;
            if (isCollapseOuter(bpsLeft)) {
                if (isCollapseOuter(bpsTop)) {
                    sy1a -= clipw[TOP];
                }
                if (isCollapseOuter(bpsBottom)) {
                    ey1a += clipw[BOTTOM];
                }
                lineTo(outerx, ey1a);
                lineTo(outerx, sy1a);
            }
            lineTo(clipx, sy1);
            lineTo(innerx, sy2);
            lineTo(innerx, ey2);
            closePath();
            clip();
            drawBorderLine(outerx, sy1a, innerx, ey1a, false, true, bpsLeft.style, bpsLeft.color);
            restoreGraphicsState();
        }
    }