Examples of KnuthGlue

org.apache.fop.layoutmgr.KnuthGlue
An instance of this class represents a piece of content with adjustable width: for example a space between words of justified text. A KnuthGlue is a feasible breaking point only if it immediately follows a KnuthBox. The represented piece of content is suppressed if either the KnuthGlue is a chosen breaking point or there isn't any KnuthBox between the previous breaking point and the KnuthGlue itself. So, an unsuppressible piece of content with adjustable width, for example a leader or a word with adjustable letter space, cannot be represented by a single KnuthGlue; it can be represented using the sequence: KnuthBox(width = 0) KnuthPenalty(width = 0, penalty = infinity) KnuthGlue(...) KnuthBox(width = 0) where the infinity penalty avoids choosing the KnuthGlue as a breaking point and the 0-width KnuthBoxes prevent suppression. Besides the inherited methods and attributes, this class has two attributes used to store the stretchability (difference between max and opt width) and the shrinkability (difference between opt and min width), and the methods to get these values.

Examples of org.apache.fop.layoutmgr.KnuthGlue

            // if addALetterSpaceTo() is called
            seq.add(new KnuthInlineBox(areaInfo.ipdArea.opt, areaInfo.alignmentContext,
                                        notifyPos(new LeafPosition(this, 0)), false));
            seq.add(new KnuthPenalty(0, KnuthElement.INFINITE, false,
                                            new LeafPosition(this, -1), true));
            seq.add(new KnuthGlue(0, 0, 0,
                                         new LeafPosition(this, -1), true));
            seq.add(new KnuthInlineBox(0, null,
                                        notifyPos(new LeafPosition(this, -1)), true));
        }

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Examples of org.apache.fop.layoutmgr.KnuthGlue

                              areaInfo.alignmentContext,
                              notifyPos(new LeafPosition(this, 0)), false));
            returnList.add(new KnuthPenalty(0, KnuthElement.INFINITE, false,
                                            new LeafPosition(this, -1), true));
            returnList.add
                (new KnuthGlue(areaInfo.iLScount * letterSpaceIPD.opt,
                               areaInfo.iLScount * letterSpaceIPD.max - letterSpaceIPD.opt,
                               areaInfo.iLScount * letterSpaceIPD.opt - letterSpaceIPD.min,
                               new LeafPosition(this, -1), true));
            returnList.add(new KnuthInlineBox(0, null,
                                        notifyPos(new LeafPosition(this, -1)), true));

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Examples of org.apache.fop.layoutmgr.KnuthGlue

                         + commonBorderPaddingBackground.getPaddingStart(false, this);
            if (ipStart > 0) {
                // Add a non breakable glue
                returnList.add(new KnuthPenalty(0, KnuthPenalty.INFINITE, 
                                                false, new LeafPosition(this, -1), true));
                returnList.add(new KnuthGlue(ipStart, 0, 0, new LeafPosition(this, -1), true));
            }
        }
    }

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Examples of org.apache.fop.layoutmgr.KnuthGlue

                        + commonBorderPaddingBackground.getPaddingEnd(false, this);
            if (ipEnd > 0) {
                // Add a non breakable glue
                returnList.add(new KnuthPenalty(0, KnuthPenalty.INFINITE,
                                                false, new LeafPosition(this, -1), true));
                returnList.add(new KnuthGlue(ipEnd, 0, 0, new LeafPosition(this, -1), true));
            }
        }
    }

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Examples of org.apache.fop.layoutmgr.KnuthGlue

                rowHeightSmallerThanFirstStep = false;
                p = KnuthPenalty.INFINITE;
            }
            returnList.add(new BreakElement(penaltyPos, effPenaltyLen, p, nextBreakClass, context));
            if (penaltyOrGlueLen < 0) {
                returnList.add(new KnuthGlue(-penaltyOrGlueLen, 0, 0, new Position(null), true));
            }


            laststep = step;
            step = getNextStep();
        } while (step >= 0);

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Examples of org.apache.fop.layoutmgr.KnuthGlue

                        // which forces a line break
                        lastPar.removeLast();
                        if (!lastPar.containsBox()) {
                            //only a forced linefeed on this line 
                            //-> compensate with an auxiliary glue
                            lastPar.add(new KnuthGlue(iLineWidth, 0, iLineWidth, null, true));
                        }
                        lastPar.endParagraph();
                        ElementListObserver.observe(lastPar, "line", null);
                        lastPar = null;
                        if (log.isTraceEnabled()) {

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Examples of org.apache.fop.layoutmgr.KnuthGlue

        */


        if (nLastLines != 0
            && (nConditionalOptionalLines > 0 || nConditionalEliminableLines > 0)) {
            breaker.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, elementPosition, false));
            breaker.add(new KnuthGlue(0, -nConditionalOptionalLines * constantLineHeight,
                                        -nConditionalEliminableLines * constantLineHeight,
                                        LINE_NUMBER_ADJUSTMENT, elementPosition, false));
            breaker.add(new KnuthPenalty(nConditionalOptionalLines * constantLineHeight,
                                           0, false, elementPosition, false));
            breaker.add(new KnuthGlue(0, nConditionalOptionalLines * constantLineHeight,
                                        nConditionalEliminableLines * constantLineHeight,
                                        LINE_NUMBER_ADJUSTMENT, elementPosition, false));
        } else if (nLastLines != 0) {
            breaker.add(new KnuthPenalty(0, 0, false, elementPosition, false));
        }


        //log.debug("first=" + nFirstLines + " inner=" + nInnerLines
        //                   + " optional=" + nOptionalLines + " eliminable=" + nEliminableLines
        //                   + " last=" + nLastLines
        //                   + " (condOpt=" + nConditionalOptionalLines + " condEl=" + nConditionalEliminableLines + ")");


        // creation of the elements:
        // first group of lines
        list.add(new KnuthBox(nFirstLines * constantLineHeight, elementPosition,
                              (nLastLines == 0
                               && nConditionalOptionalLines == 0
                               && nConditionalEliminableLines == 0 ? true : false)));
        if (nConditionalOptionalLines > 0
            || nConditionalEliminableLines > 0) {
            list.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, elementPosition, false));
            list.add(new KnuthGlue(0, nConditionalOptionalLines * constantLineHeight,
                                   nConditionalEliminableLines * constantLineHeight,
                                   LINE_NUMBER_ADJUSTMENT, elementPosition, false));
            list.add(new KnuthBox(0, elementPosition,
                                  (nLastLines == 0 ? true : false)));
        }


        // optional lines
        for (int i = 0; i < nOptionalLines; i++) {
            list.addAll(breaker);
            list.add(new KnuthBox(0, elementPosition, false));
            list.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, elementPosition, false));
            list.add(new KnuthGlue(0, 1 * constantLineHeight, 0,
                                   LINE_NUMBER_ADJUSTMENT, elementPosition, false));
            list.add(new KnuthBox(0, elementPosition, false));
        }


        // eliminable lines
        for (int i = 0; i < nEliminableLines; i++) {
            list.addAll(breaker);
            list.add(new KnuthBox(1 * constantLineHeight, elementPosition, false));
            list.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, elementPosition, false));
            list.add(new KnuthGlue(0, 0, 1 * constantLineHeight,
                                   LINE_NUMBER_ADJUSTMENT, elementPosition, false));
            list.add(new KnuthBox(0, elementPosition, false));
        }


        // inner lines

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Examples of org.apache.fop.layoutmgr.KnuthGlue

                                            layoutManager.iLineWidth); 
            }


            // add auxiliary elements at the beginning of the paragraph
            if (textAlignment == EN_CENTER && textAlignmentLast != EN_JUSTIFY) {
                this.add(new KnuthGlue(0, 3 * DEFAULT_SPACE_WIDTH, 0,
                                       null, false));
                ignoreAtStart++;
            }


            // add the element representing text indentation

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Examples of org.apache.fop.layoutmgr.KnuthGlue


        public KnuthSequence endSequence() {
            if (this.size() > ignoreAtStart) {
                if (textAlignment == EN_CENTER
                    && textAlignmentLast != EN_JUSTIFY) {
                    this.add(new KnuthGlue(0, 3 * DEFAULT_SPACE_WIDTH, 0,
                                           null, false));
                    this.add(new KnuthPenalty(lineFiller.opt, -KnuthElement.INFINITE,
                                              false, null, false));
                    ignoreAtEnd = 2;
                } else if (textAlignmentLast != EN_JUSTIFY) {
                    // add the elements representing the space
                    // at the end of the last line
                    // and the forced break
                    this.add(new KnuthPenalty(0, KnuthElement.INFINITE, 
                                              false, null, false));
                    this.add(new KnuthGlue(0, 
                            lineFiller.max - lineFiller.opt, 
                            lineFiller.opt - lineFiller.min, null, false));
                    this.add(new KnuthPenalty(lineFiller.opt, -KnuthElement.INFINITE,
                                              false, null, false));
                    ignoreAtEnd = 3;

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Examples of org.apache.fop.layoutmgr.KnuthGlue

        lst.add(new KnuthPenalty(0, 200, false, null, false));
        lst.add(new KnuthBox(4000, null, false));
        lst.add(new KnuthPenalty(0, 0, false, null, false));
        lst.add(new KnuthBox(4000, null, false));
        lst.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, null, false));
        lst.add(new KnuthGlue(0, Integer.MAX_VALUE, 0, null, false));
        lst.add(new KnuthPenalty(0, -KnuthElement.INFINITE, false, null, false));
        
        boolean res = ElementListUtils.removeLegalBreaks(lst, 9000);
        
        assertFalse(res);

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