1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <pwd.h>
MainWindow::MainWindow(char *argv, QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow),
file(argv)
{
// Initialize cups
num_dests = cupsGetDests(&dests);
// Initialize UI
initializeUI();
}
MainWindow::~MainWindow()
{
cupsFreeDests(num_dests, dests);
delete ui;
}
void MainWindow::initializeUI()
{
ui->setupUi(this);
ui->horizontalLayoutButtons->setAlignment(Qt::AlignRight);
/* Initialize Treeview */
ui->printerList->setColumnCount(3);
ui->printerList->setSizePolicy(QSizePolicy::Minimum,QSizePolicy::Minimum);
// Rename headers
QStringList h;
h.append("Drucker");
h.append("Information");
h.append("Standort");
ui->printerList->setHeaderLabels(h);
// Fill treewidget with data from cups dests;
cups_dest_t *dest = dests;
for (int i = num_dests; i>0; ++dest, --i )
if (dest->instance == NULL)
{
QTreeWidgetItem *wi = new QTreeWidgetItem();
wi->setText(0, QString(dest->name));
wi->setText(1, QString(cupsGetOption("printer-info", dest->num_options, dest->options)));
wi->setText(2, QString(cupsGetOption("printer-location", dest->num_options, dest->options)));
ui->printerList->addTopLevelItem(wi);
}
// Resize columns to contents
for (int i = 0; i < 3; ++i)
ui->printerList->resizeColumnToContents(i);
/* Main Window properties */
// Disable close button
this->setWindowFlags(windowFlags() & ~Qt::WindowCloseButtonHint);
// center dialog on screen center
QRect desktopRect = QApplication::desktop()->screenGeometry(this);
this->move( desktopRect.width()/2-this->width()/2,
desktopRect.height()/2-this->height()/2);
}
void MainWindow::on_printerList_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *previous)
{
ui->printerList->setFocus();
cups_dest_t *dest =cupsGetNamedDest (CUPS_HTTP_DEFAULT, current->text(0).toAscii(), NULL);
/* * Check printer properties (auth, color, duplex, copies) * */
// get printer capabilities
int res = ::atoi(cupsGetOption("printer-type",
dest->num_options,
dest->options));
// Check authentication
if (res & CUPS_PRINTER_AUTHENTICATED)
{
ui->labelUser->setEnabled(true);
ui->labelPass->setEnabled(true);
ui->lineEditUser->setEnabled(true);
ui->lineEditPass->setEnabled(true);
}
else
{
ui->labelUser->setEnabled(false);
ui->labelPass->setEnabled(false);
ui->lineEditUser->setEnabled(false);
ui->lineEditPass->setEnabled(false);
}
// Check color capabilities
if (res & CUPS_PRINTER_COLOR)
{
ui->comboBoxColor->setEnabled(true);
ui->comboBoxColor->setCurrentIndex(1);
}
else
{
ui->comboBoxColor->setEnabled(false);
ui->comboBoxColor->setCurrentIndex(0);
}
// Check duplex capabilities
if (res & CUPS_PRINTER_DUPLEX)
{
ui->comboBoxSides->setEnabled(true);
}
else
{
ui->comboBoxSides->setEnabled(false);
ui->comboBoxSides->setCurrentIndex(0);
}
// Check copy capabilities
if (res & CUPS_PRINTER_COPIES)
{
ui->lineEditCopies->setEnabled(true);
ui->labelCopies->setEnabled(true);
}
else
{
ui->lineEditCopies->setEnabled(false);
ui->lineEditCopies->setText("1");
ui->labelCopies->setEnabled(false);
}
// Check availability
if (res & CUPS_PRINTER_REJECTING)
{
ui->buttonPrint->setEnabled(false);
}
else
{
ui->buttonPrint->setEnabled(true);
}
}
void MainWindow::on_buttonCancel_clicked()
{
// Quit with code 1
QCoreApplication::instance()->exit(1);
}
void MainWindow::on_buttonPrint_clicked()
{
QString cmd;
// Wenn Farbe möglich ist. Aber trotzdem Graustufen gewählt
// Schieb file durch ghostscript
if (ui->comboBoxColor->isEnabled() && ui->comboBoxColor->currentIndex() == 0)
{
// Run ghostscript to make file grayscale
cmd = QString("gs -sDEVICE=psgray -dNOPAUSE -dBATCH -dQUIET -dSAFER -sOutputFile=\"%22\" \"%1\"").arg(
file,
file);
system(cmd.toAscii());
}
// Username, part of whoami source
register uid_t uid = geteuid();
const char *username = getpwuid(uid)->pw_name;
cmd = QString("lp -U %1").arg(username);
// Duplex
if (ui->comboBoxSides->isEnabled())
{
switch (ui->comboBoxSides->currentIndex()){
case 0:
cmd.append(" -o sides=one-sided");
break;
case 1:
cmd.append(" -o sides=two-sided-long-edge");
break;
case 2:
cmd.append(" -o sides=two-sided-long-edge");
break;
}
}
// Kopien
if (ui->lineEditCopies->isEnabled())
cmd.append(QString(" -n %1").arg(ui->lineEditCopies->text()));
// Queue
cmd.append(QString(" -d %1").arg(ui->printerList->currentItem()->text(0)));
// File
cmd.append(QString(" -- \"%1\"").arg(file));
// Print results to stdout
QTextStream (stdout, QIODevice::WriteOnly) << cmd;
// Execute the command
system(cmd.toAscii());
// Quit with code 0
QCoreApplication::instance()->quit();
}
|
