Mercurial > hg > syntilista

annotate src/printing.cpp @ 166:9511e2f250be

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Force default page margins for printing, this fixes some problems under Windows.
author Matti Hamalainen <ccr@tnsp.org>
date Tue, 19 Sep 2017 13:01:29 +0300
parents 186d0717707f
children c54ad71c1205
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1 //
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2 // Syntilista - debt list/management database program
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3 // Programmed and designed by Matti Hämäläinen <ccr@tnsp.org>
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4 // (C) Copyright 2017 Tecnic Software productions (TNSP)
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5 //
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6 // Distributed under 3-clause BSD style license, refer to
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7 // included file "COPYING" for exact terms.
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8 //
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9 #include <QPrintDialog>
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10 #include <QPrintPreviewDialog>
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11 #include "main.h"
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12
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13 #define APP_PRINT_WIDTH 1000
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14 #define APP_PRINT_HEIGHT 1300
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15
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16
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17 void SyntilistaMainWindow::on_button_Print_clicked()
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18 {
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19 // Create a printer object and force some basic settings
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20 QPrinter printer(QPrinter::HighResolution);
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21 printer.setResolution(300);
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22 printer.setPageSize(QPageSize(QPageSize::A4));
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23 printer.setPageMargins(QMarginsF(0.25f, 0.5f, 0.25f, 0.5f), QPageLayout::Inch);
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24 printer.setColorMode(QPrinter::GrayScale);
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25
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26 // We need to get the page count here, and also need it again in
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27 // printDocument(), but there is no sane way to pass that there,
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28 // so some code duplication is unfortunately necessary
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29 pinfo.npages = 0;
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30 pinfo.nlinesPerPage = 0;
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31
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32 QPixmap tmpPixmap(APP_PRINT_WIDTH, APP_PRINT_HEIGHT);
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33 QPainter tmpPainter;
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34 tmpPainter.begin(&tmpPixmap);
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35 bool ret = printDocumentPage(true, -1, &tmpPainter, &printer);
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36 tmpPainter.end();
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37
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38 if (!ret)
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39 {
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40 // Some kind of error occured
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41 return;
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42 }
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43
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44
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45 // Set available pages
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46 printer.setFromTo(1, pinfo.npages);
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47
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48 // Create print preview dialog and show it
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49 QPrintPreviewDialog preview(&printer, this);
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50 preview.setWindowTitle(tr("Tulostuksen esikatselu"));
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51 preview.setWindowModality(Qt::ApplicationModal);
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52 preview.setSizeGripEnabled(true);
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53
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54 connect(
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55 &preview,
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56 SIGNAL(paintRequested(QPrinter *)),
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57 this,
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58 SLOT(printDocument(QPrinter *)));
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59
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60 preview.exec();
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61 }
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62
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63
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64 void SyntilistaMainWindow::printDocument(QPrinter *printer)
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65 {
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66 // Create progress dialog
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67 QProgressDialog progress(
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68 tr("Tulostetaan ..."),
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69 tr("Peruuta"),
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70 0,
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71 1,
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72 this);
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73
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74 progress.setWindowModality(Qt::ApplicationModal);
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75
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76 // If from and to are 0, we are supposed to print all pages
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77 if (printer->fromPage() == 0 && printer->toPage() == 0)
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78 printer->setFromTo(1, pinfo.npages);
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79
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80 // Setup rest of the progress dialog here
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81 progress.setMinimum(printer->fromPage() - 1);
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82 progress.setMaximum(printer->toPage());
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83
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84 // Begin painting to the printer (or preview)
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85 QPainter painter;
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86 painter.begin(printer);
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87
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88 bool firstPage = true;
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89 for (int page = printer->fromPage(); page <= printer->toPage(); page++)
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90 {
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91 if (!firstPage)
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92 printer->newPage();
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93
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94 qApp->processEvents();
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95 if (progress.wasCanceled())
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96 break;
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97
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98 printDocumentPage(false, page, &painter, printer);
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99 progress.setValue(page);
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100 firstPage = false;
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101 }
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102
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103 painter.end();
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104 }
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105
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106
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107 bool SyntilistaMainWindow::printDocumentPage(const bool getPageInfo, const int npage, QPainter *pt, QPrinter *printer)
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108 {
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109 // Form the SQL query for list of users
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110 QString querystr = QStringLiteral(
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111 "SELECT id,first_name,last_name,extra_info,added,updated, "
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112 "(SELECT TOTAL(value) FROM transactions WHERE transactions.person=people.id) AS balance "
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113 "FROM people ORDER BY last_name ASC,first_name ASC");
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114
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115 // If we are fetching page info, we need to process all entries
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116 if (!getPageInfo)
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117 {
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118 // Otherwise we can limit to given page number
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119 querystr += QStringLiteral(" LIMIT %1 OFFSET %2").
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120 arg(pinfo.nlinesPerPage).
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121 arg((npage - 1) * pinfo.nlinesPerPage);
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122 }
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123
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124 QSqlQuery query;
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125 query.prepare(querystr);
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126 query.setForwardOnly(true);
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127 query.exec();
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128
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129 if (!slCheckAndReportSQLError("printDocumentPage()", query.lastError()))
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130 {
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131 slErrorMsg(
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132 tr("SQL-tietokantavirhe"),
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133 tr("Tietokantaa selattaessa tapahtui virhe."));
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134
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135 return false;
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136 }
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137
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138 pt->save();
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139 pt->scale(
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140 pt->device()->width() / (float) APP_PRINT_WIDTH,
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141 pt->device()->height() / (float) APP_PRINT_HEIGHT);
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142
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143 QFont font1;
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144 font1.setFamily("Arial");
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145 font1.setPixelSize(24);
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146 SLDrawContext ctx(pt);
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147 ctx.setFont(font1);
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148
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149 int nline = 0;
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150 while (query.next())
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151 {
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152 PersonInfo info;
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153 slGetPersonInfoRec(query, info);
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154
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155 // Check for end of page
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156 // KLUDGE for now
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157 if (getPageInfo && ctx.lfq(10) >= APP_PRINT_HEIGHT - ctx.boundRect().height() * 1.5f)
157
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158 {
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159 if (nline > pinfo.nlinesPerPage)
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160 pinfo.nlinesPerPage = nline;
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161
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162 pinfo.npages++;
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163 nline = 0;
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164 }
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165
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166 if (nline == 0)
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167 {
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168 // If we are at the start of the page, we shall draw a header
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169 pt->setBrush(QBrush(Qt::black));
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170 pt->setPen(QPen(Qt::black, 3, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
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171
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172 ctx.setPos(0, 0);
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173 ctx.drawText( 5, 180, tr("Etunimi"));
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174 ctx.drawText( 200, 230, tr("Sukunimi"));
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175 ctx.drawText( 450, 190, tr("Lisätty"));
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176 ctx.drawText( 650, 190, tr("Päivitetty"));
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177 ctx.drawText( 870, 120, tr("Tase"));
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178 ctx.lf();
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179
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180 pt->drawLine(0, ctx.m_pos.y(), APP_PRINT_WIDTH, ctx.m_pos.y());
157
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181
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182 ctx.move(0, 5);
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183 }
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184
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185 // Draw a gray bar under every second line
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186 if (nline % 2 == 0)
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187 {
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188 pt->fillRect(
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189 0,
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190 ctx.m_pos.y() - 1,
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191 APP_PRINT_WIDTH,
157
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192 ctx.boundRect().height() + 4,
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193 QColor(0, 0, 0, 40));
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194 }
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195
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196 ctx.drawText( 5, 180, info.firstName);
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197 ctx.drawText( 200, 230, info.lastName);
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198 ctx.drawText( 450, 190, slDateTimeToStr(info.added));
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199 ctx.drawText( 650, 190, slDateTimeToStr(info.updated));
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200 ctx.drawText( 870, 120, slMoneyValueToStr(info.balance), Qt::AlignRight);
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201
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202 ctx.lf(10);
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203 nline++;
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204 }
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205
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206 query.finish();
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207
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208 if (getPageInfo)
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209 {
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210 if (nline > pinfo.nlinesPerPage)
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211 pinfo.nlinesPerPage = nline;
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212
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213 pinfo.npages++;
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214 }
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215 else
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216 {
161
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217 ctx.setPos(0, APP_PRINT_HEIGHT - ctx.boundRect().height());
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218 ctx.drawText(0, APP_PRINT_WIDTH,
157
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219 tr("Sivu %1 / %2 (%3 / %4)").
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220 arg(npage - printer->fromPage() + 1).
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221 arg(printer->toPage() - printer->fromPage() + 1).
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222 arg(npage).
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223 arg(printer->toPage()),
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224 Qt::AlignHCenter);
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225 }
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226
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227 pt->restore();
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228 return true;
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229 }