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comparison src/printing.cpp @ 157:325e7590f93e

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Move most of the printing related code to printing.cpp
author Matti Hamalainen <ccr@tnsp.org>
date Tue, 12 Sep 2017 15:56:40 +0300
parents
children f5c1861b48aa
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156:afadc1380fb1 157:325e7590f93e
1 //
2 // Syntilista - debt list/management database program
3 // Programmed and designed by Matti Hämäläinen <ccr@tnsp.org>
4 // (C) Copyright 2017 Tecnic Software productions (TNSP)
5 //
6 // Distributed under 3-clause BSD style license, refer to
7 // included file "COPYING" for exact terms.
8 //
9 #include <QPrintDialog>
10 #include <QPrintPreviewDialog>
11 #include "main.h"
12
13
14 void SyntilistaMainWindow::on_button_Print_clicked()
15 {
16 // Create a printer object and force some basic settings
17 QPrinter printer(QPrinter::HighResolution);
18 printer.setPageSize(QPageSize(QPageSize::A4));
19 printer.setColorMode(QPrinter::GrayScale);
20 printer.setResolution(300);
21
22 // We need to get the page count here, and also need it again in
23 // printDocument(), but there is no sane way to pass that there,
24 // so some code duplication is unfortunately necessary
25 SLPageInfo pinfo;
26 pinfo.npages = 0;
27 pinfo.nlinesPerPage = 0;
28
29 QPixmap tmpPixmap(1000, 1300);
30 QPainter tmpPainter;
31 tmpPainter.begin(&tmpPixmap);
32 bool ret = printDocumentPage(pinfo, true, -1, &tmpPainter, &printer);
33 tmpPainter.end();
34
35 if (!ret)
36 {
37 // Some kind of error occured
38 return;
39 }
40
41
42 // Set available pages
43 printer.setFromTo(1, pinfo.npages);
44
45 // Create print preview dialog and show it
46 QPrintPreviewDialog preview(&printer, this);
47 preview.setWindowModality(Qt::ApplicationModal);
48 preview.setSizeGripEnabled(true);
49
50 connect(
51 &preview,
52 SIGNAL(paintRequested(QPrinter *)),
53 this,
54 SLOT(printDocument(QPrinter *)));
55
56 preview.exec();
57 }
58
59
60 void SyntilistaMainWindow::printDocument(QPrinter *printer)
61 {
62 // Create progress dialog
63 QProgressDialog progress(
64 tr("Tulostetaan ..."),
65 tr("Peruuta"),
66 0,
67 1,
68 this);
69
70 progress.setWindowModality(Qt::ApplicationModal);
71
72 // Again, get the page info here .. we need the number of lines per page
73 SLPageInfo pinfo;
74 pinfo.npages = 0;
75 pinfo.nlinesPerPage = 0;
76
77 QPixmap tmpPixmap(1000, 1300);
78 QPainter tmpPainter;
79 tmpPainter.begin(&tmpPixmap);
80 bool ret = printDocumentPage(pinfo, true, -1, &tmpPainter, printer);
81 tmpPainter.end();
82
83 if (!ret)
84 return;
85
86 // If from and to are 0, we are supposed to print all pages
87 if (printer->fromPage() == 0 && printer->toPage() == 0)
88 printer->setFromTo(1, pinfo.npages);
89
90 // Setup rest of the progress dialog here
91 progress.setMinimum(printer->fromPage() - 1);
92 progress.setMaximum(printer->toPage());
93
94 // Begin painting to the printer (or preview)
95 QPainter painter;
96 painter.begin(printer);
97
98 bool firstPage = true;
99 for (int page = printer->fromPage(); page <= printer->toPage(); page++)
100 {
101 if (!firstPage)
102 printer->newPage();
103
104 qApp->processEvents();
105 if (progress.wasCanceled())
106 break;
107
108 printDocumentPage(pinfo, false, page, &painter, printer);
109 progress.setValue(page);
110 firstPage = false;
111 }
112
113 painter.end();
114 }
115
116
117 bool SyntilistaMainWindow::printDocumentPage(SLPageInfo &pinfo, const bool getPageInfo, const int npage, QPainter *pt, QPrinter *printer)
118 {
119 // Form the SQL query for list of users
120 QString querystr = QStringLiteral(
121 "SELECT id,first_name,last_name,extra_info,added,updated, "
122 "(SELECT TOTAL(value) FROM transactions WHERE transactions.person=people.id) AS balance "
123 "FROM people ORDER BY last_name ASC,first_name ASC");
124
125 // If we are fetching page info, we need to process all entries
126 if (!getPageInfo)
127 {
128 // Otherwise we can limit to given page number
129 querystr += QStringLiteral(" LIMIT %1 OFFSET %2").
130 arg(pinfo.nlinesPerPage).
131 arg((npage - 1) * pinfo.nlinesPerPage);
132 }
133
134 QSqlQuery query;
135 query.prepare(querystr);
136 query.setForwardOnly(true);
137 query.exec();
138
139 if (!slCheckAndReportSQLError("printDocumentPage()", query.lastError()))
140 {
141 slErrorMsg(
142 tr("SQL-tietokantavirhe"),
143 tr("Tietokantaa selattaessa tapahtui virhe."));
144
145 return false;
146 }
147
148 pt->save();
149 if (!getPageInfo)
150 {
151 pt->scale(
152 printer->pageRect().width() / 1000.0f,
153 printer->pageRect().height() / 1300.0f);
154 }
155
156 QFont font1("Arial", 5);
157 SLDrawContext ctx(pt);
158 ctx.setFont(font1);
159
160 int nline = 0;
161 while (query.next())
162 {
163 PersonInfo info;
164 slGetPersonInfoRec(query, info);
165
166 // Check for end of page
167 // KLUDGE for now
168 if (getPageInfo && ctx.lfq(10) >= 1300.0f)
169 {
170 if (nline > pinfo.nlinesPerPage)
171 pinfo.nlinesPerPage = nline;
172
173 pinfo.npages++;
174 nline = 0;
175 }
176
177 if (nline == 0)
178 {
179 // If we are at the start of the page, we shall draw a header
180 pt->setBrush(QBrush(Qt::black));
181 pt->setPen(QPen(Qt::black, 3, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
182
183 ctx.setPos(0, 0);
184 ctx.drawText( 5, 180, tr("Etunimi"));
185 ctx.drawText( 200, 230, tr("Sukunimi"));
186 ctx.drawText( 450, 190, tr("Lisätty"));
187 ctx.drawText( 650, 190, tr("Päivitetty"));
188 ctx.drawText( 870, 120, tr("Tase"));
189 ctx.lf();
190
191 pt->drawLine(0, ctx.m_pos.y(), 1000, ctx.m_pos.y());
192
193 ctx.move(0, 5);
194 }
195
196 // Draw a gray bar under every second line
197 if (nline % 2 == 0)
198 {
199 pt->fillRect(
200 0,
201 ctx.m_pos.y() - 1,
202 1000,
203 ctx.boundRect().height() + 4,
204 QColor(0, 0, 0, 40));
205 }
206
207 ctx.drawText( 5, 180, info.firstName);
208 ctx.drawText( 200, 230, info.lastName);
209 ctx.drawText( 450, 190, slDateTimeToStr(info.added));
210 ctx.drawText( 650, 190, slDateTimeToStr(info.updated));
211 ctx.drawText( 870, 120, slMoneyValueToStr(info.balance), Qt::AlignRight);
212
213 ctx.lf(10);
214 nline++;
215 }
216
217 query.finish();
218
219 if (getPageInfo)
220 {
221 if (nline > pinfo.nlinesPerPage)
222 pinfo.nlinesPerPage = nline;
223
224 pinfo.npages++;
225 }
226 else
227 {
228 ctx.setPos(0, 1240);
229 ctx.drawText(0, 1000,
230 tr("Sivu %1 / %2 (%3 / %4)").
231 arg(npage - printer->fromPage() + 1).
232 arg(printer->toPage() - printer->fromPage() + 1).
233 arg(npage).
234 arg(printer->toPage()),
235 Qt::AlignHCenter);
236 }
237
238 pt->restore();
239 return true;
240 }
241
242