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annotate anagram/vaclgui/multiline.cpp @ 4:bebb2ba69e1d

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maybe help with getting tex to fail properly on error
author David A. Holland
date Sat, 18 Apr 2020 17:12:17 -0400
parents 13d2b8934445
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * AnaGram, A System for Syntax Directed Programming
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3 * Copyright 1997-2002 Parsifal Software. All Rights Reserved.
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4 * See the file COPYING for license and usage terms.
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5 *
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6 * multiline.cpp
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7 */
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8
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9 #include <icoordsy.hpp>
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10 #include <ifont.hpp>
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11 //#include <istring.hpp>
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12 #include <windows.h>
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13
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14 #include "multiline.hpp"
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15
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16 //#define INCLUDE_LOGGING
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17 #include "log.h"
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18
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19
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20 MultiLineText &MultiLineText::setText(const char *s) {
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21 LOGSECTION("MultiLineText::setText");
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22 textString = s;
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23 char *p = textString.pointer();
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24 nLines = 0;
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25 while (p && *p) {
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26 LOGV((int) p);
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27 p = strchr(p, '\n');
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28 nLines++;
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29 if (p == 0) {
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30 break;
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31 }
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32 p++;
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33 }
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34 LOGV(nLines);
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35 return *this;
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36 }
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37
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38 Boolean MultiLineText::paintWindow(IPaintEvent &event) {
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39 LOGSECTION("MultiLineText::paintWindow");
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40 LOGV(event.rect().asString());
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41 LOGV(event.rect().movedBy(position()).asString());
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42 IPresSpaceHandle presSpaceHandle = event.presSpaceHandle();
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43
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44 font().beginUsingFont(presSpaceHandle);
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45
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46 int lineWidth = size().width();
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47
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48 SetBkMode(presSpaceHandle, TRANSPARENT);
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49 event.clearBackground(event.rect(),IGUIColor::dialogBgnd);
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50 IPoint where(0, margin.height());
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51 int i;
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52 int leading = font().maxSize().height() + font().externalLeading();
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53 //LOGV(leading);
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54 char *p = textString.pointer();
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55 for (i = 0; i < nLines; i++) {
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56 char *q = strchr(p, '\n');
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57 if (q) {
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58 *q = 0;
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59 }
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60 char *t = p;
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61 if (*t =='\v') {
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62 t++;
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63 }
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64 int margin = (lineWidth - font().textWidth(t))/2;
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65 where.setX(margin);
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66 IPoint actualWhere = where;
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67 if (ICoordinateSystem::isConversionNeeded()) {
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68 actualWhere = ICoordinateSystem::convertToNative(where, size());
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69 actualWhere.setY(actualWhere.y() - leading);
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70 }
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71 event.drawText(p, actualWhere);
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72 LOGV(p);
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73 if (q) {
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74 *q = '\n';
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75 }
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76 p = q+1;
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77 if (q) {
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78 LOGV(p);
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79 }
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80 if (q && *p == '\v') {
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81 LOGV(vTab);
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82 where.setY(where.y() + vTab);
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83 p++;
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84 }
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85 where.setY(where.y() + leading);
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86 }
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87 return true;
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88 }
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89
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90 ISize MultiLineText::calcMinimumSize() const {
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91 LOGSECTION("MultiLineText::calcMinimumSize");
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92 char *p = textString.pointer();
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93 int maxWidth = 0;
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94 IPoint where(0, 0);
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95 int leading = font().maxSize().height() + font().externalLeading();
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96 for (int i = 0; i < nLines; i++) {
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97 char *q = strchr(p, '\n');
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98 if (q) {
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99 *q = 0;
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100 }
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101 int width = font().textWidth(p);
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102 if (width > maxWidth) {
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103 maxWidth = width;
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104 }
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105 LOGV(width);
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106 LOGV(p);
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107 if (q) {
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108 *q = '\n';
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109 }
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110 p = q+1;
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111 if (q && *p == '\v') {
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112 where.setY(where.y() + vTab);
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113 p++;
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114 }
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115 where.setY(where.y() + leading);
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116 }
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117 //int enWidth = font().avgCharWidth();
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118 maxWidth += 2*margin.width();
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119
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120 ISize minSize(maxWidth, where.y() + 2*margin.height());
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121 LOGV(minSize.asString());
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122 return minSize;
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123 }
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124