From f70924e9ccc016b979bc74bba156600639184be7 Mon Sep 17 00:00:00 2001
From: John Layt <jlayt@kde.org>
Date: Wed, 9 May 2012 23:47:14 +0100
Subject: QtPrintSupport: Add CUPS printsupport plugin

Move CUPS code around to create a new CUPS printsupport plugin, this
fixes QPrinterInfo for CUPS which depends on the plugin to work.

It QT_NO_CUPS is defined then the plugin is not built and only Print
to PDF is supported under Linux.

* Move unused genericiunixprintersupport plugin to start new CUPS
  printsupport plugin
* Split QPdfPrintEngine to create QCupsPrintEngine
* Remove LPR related code from QPdfPrintEngine
* Move CUPS specific code from plugin base class to derived CUPS class
* Remove forcing CUPS print engine to use PDF mode as PDF is now Native
* Move qt_getCupsPrinterPaperSizes from qprinterinfo_unix to
  QCUPSSupport
* Remove qprinterinfo_unix as no longer used
* Remove all QT_NO_LPR uses

There is now no CUPS specific code left in printsupport/kernel except
QCUPSSupport which is needed for the dialogs.

Task-number: QTBUG-23060

Change-Id: Ie8fa4512a2424edc8943068e0fa9fb714cc42db9
Reviewed-by: Teemu Katajisto <teemu.katajisto@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: John Layt <jlayt@kde.org>
---
 src/printsupport/kernel/qcups.cpp | 83 +++++++++++++++++++++++++++++++++------
 1 file changed, 70 insertions(+), 13 deletions(-)

(limited to 'src/printsupport/kernel/qcups.cpp')

diff --git a/src/printsupport/kernel/qcups.cpp b/src/printsupport/kernel/qcups.cpp
index 1f8bed57ea..8b4356321d 100644
--- a/src/printsupport/kernel/qcups.cpp
+++ b/src/printsupport/kernel/qcups.cpp
@@ -40,7 +40,6 @@
 ****************************************************************************/
 #include <qdebug.h>
 #include "qcups_p.h"
-#include "qprinterinfo_unix_p.h"
 
 #ifndef QT_NO_CUPS
 
@@ -405,7 +404,6 @@ QList<QCUPSSupport::Printer> QCUPSSupport::availableUnixPrinters()
 {
     QList<Printer> printers;
 
-#if !defined(QT_NO_CUPS) && !defined(QT_NO_LIBRARY)
     if (QCUPSSupport::isAvailable()) {
         QCUPSSupport cups;
         int cupsPrinterCount = cups.availablePrintersCount();
@@ -421,24 +419,83 @@ QList<QCUPSSupport::Printer> QCUPSSupport::availableUnixPrinters()
             p.cupsPrinterIndex = i;
             printers.append(p);
         }
-    } else
-#endif
-           {
-        QList<QPrinterDescription> lprPrinters;
-        int defprn = qt_getLprPrinters(lprPrinters);
-        // populating printer combo
-        foreach (const QPrinterDescription &description, lprPrinters)
-            printers.append(Printer(description.name));
-        if (defprn >= 0 && defprn < printers.size())
-            printers[defprn].isDefault = true;
     }
 
     return printers;
 }
 
+// preserve names in ascending order for the binary search
+static const struct NamedPaperSize {
+    const char *const name;
+    QPrinter::PaperSize size;
+} named_sizes_map[QPrinter::NPageSize] = {
+    { "A0", QPrinter::A0 },
+    { "A1", QPrinter::A1 },
+    { "A2", QPrinter::A2 },
+    { "A3", QPrinter::A3 },
+    { "A4", QPrinter::A4 },
+    { "A5", QPrinter::A5 },
+    { "A6", QPrinter::A6 },
+    { "A7", QPrinter::A7 },
+    { "A8", QPrinter::A8 },
+    { "A9", QPrinter::A9 },
+    { "B0", QPrinter::B0 },
+    { "B1", QPrinter::B1 },
+    { "B10", QPrinter::B10 },
+    { "B2", QPrinter::B2 },
+    { "B4", QPrinter::B4 },
+    { "B5", QPrinter::B5 },
+    { "B6", QPrinter::B6 },
+    { "B7", QPrinter::B7 },
+    { "B8", QPrinter::B8 },
+    { "B9", QPrinter::B9 },
+    { "C5E", QPrinter::C5E },
+    { "Comm10E", QPrinter::Comm10E },
+    { "Custom", QPrinter::Custom },
+    { "DLE", QPrinter::DLE },
+    { "Executive", QPrinter::Executive },
+    { "Folio", QPrinter::Folio },
+    { "Ledger", QPrinter::Ledger },
+    { "Legal", QPrinter::Legal },
+    { "Letter", QPrinter::Letter },
+    { "Tabloid", QPrinter::Tabloid }
+};
+
+inline bool operator<(const char *name, const NamedPaperSize &data)
+{ return qstrcmp(name, data.name) < 0; }
+inline bool operator<(const NamedPaperSize &data, const char *name)
+{ return qstrcmp(data.name, name) < 0; }
+
+static inline QPrinter::PaperSize string2PaperSize(const char *name)
+{
+    const NamedPaperSize *r = qBinaryFind(named_sizes_map, named_sizes_map + QPrinter::NPageSize, name);
+    if (r - named_sizes_map != QPrinter::NPageSize)
+        return r->size;
+    return QPrinter::Custom;
+}
+
+static inline const char *paperSize2String(QPrinter::PaperSize size)
+{
+    for (int i = 0; i < QPrinter::NPageSize; ++i) {
+        if (size == named_sizes_map[i].size)
+            return named_sizes_map[i].name;
+    }
+    return 0;
+}
+
 QList<QPrinter::PaperSize> QCUPSSupport::getCupsPrinterPaperSizes(int cupsPrinterIndex)
 {
-    return qt_getCupsPrinterPaperSizes(cupsPrinterIndex);
+    QList<QPrinter::PaperSize> result;
+    if (!QCUPSSupport::isAvailable() || cupsPrinterIndex < 0)
+        return result;
+    // Find paper sizes from CUPS.
+    QCUPSSupport cups;
+    cups.setCurrentPrinter(cupsPrinterIndex);
+    if (const ppd_option_t* size = cups.pageSizes()) {
+        for (int j = 0; j < size->num_choices; ++j)
+            result.append(string2PaperSize(size->choices[j].choice));
+    }
+    return result;
 }
 
 QT_END_NAMESPACE
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