Use the paged paintdevice in the print() method of QTextDocument.

This is required to be able to move the printing system into
it's own library.

Change-Id: If70a55be4c4413f9cd917a30d1b368f32c1145e4
Reviewed-on: http://codereview.qt.nokia.com/3207
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

8 files changed, 53 insertions, 81 deletions

diff --git a/examples/itemviews/spreadsheet/printview.h b/examples/itemviews/spreadsheet/printview.h
index 7c74844483..43a7bb39b7 100644
--- a/examples/itemviews/spreadsheet/printview.h
+++ b/examples/itemviews/spreadsheet/printview.h
@@ -43,6 +43,7 @@
 #define PRINTVIEW_H
 
 #include <QTableView>
+class QPrinter;
 
 class PrintView : public QTableView
 {
diff --git a/examples/richtext/textedit/textedit.h b/examples/richtext/textedit/textedit.h
index 6436178ab5..ed2057214e 100644
--- a/examples/richtext/textedit/textedit.h
+++ b/examples/richtext/textedit/textedit.h
@@ -52,6 +52,7 @@ QT_FORWARD_DECLARE_CLASS(QFontComboBox)
 QT_FORWARD_DECLARE_CLASS(QTextEdit)
 QT_FORWARD_DECLARE_CLASS(QTextCharFormat)
 QT_FORWARD_DECLARE_CLASS(QMenu)
+QT_FORWARD_DECLARE_CLASS(QPrinter)
 
 class TextEdit : public QMainWindow
 {
diff --git a/src/gui/printsupport/printsupport.pri b/src/gui/printsupport/printsupport.pri
index 2faf36ff5b..b4773216d5 100644
--- a/src/gui/printsupport/printsupport.pri
+++ b/src/gui/printsupport/printsupport.pri
@@ -5,7 +5,8 @@ HEADERS += \
         $$PWD/qprinter.h \
         $$PWD/qprinter_p.h \
         $$PWD/qprinterinfo.h \
-        $$PWD/qprinterinfo_p.h
+        $$PWD/qprinterinfo_p.h \
+        $$PWD/qprintabletextdocument.h
 
 SOURCES += \
         $$PWD/qpaintengine_alpha.cpp \
@@ -13,6 +14,7 @@ SOURCES += \
         $$PWD/qprintengine_pdf.cpp \
         $$PWD/qprinter.cpp \
         $$PWD/qprinterinfo.cpp \
+        $$PWD/qprintabletextdocument.cpp
 
 unix:!symbian {
         HEADERS += \
diff --git a/src/gui/text/qtextcontrol.cpp b/src/gui/text/qtextcontrol.cpp
index 689fd4379b..0a4b61f414 100644
--- a/src/gui/text/qtextcontrol.cpp
+++ b/src/gui/text/qtextcontrol.cpp
@@ -60,6 +60,7 @@
 #include "qprinter.h"
 #include "qtextdocumentwriter.h"
 #include "private/qtextcursor_p.h"
+#include "qpagedpaintdevice.h"
 
 #include <qtextformat.h>
 #include <qdatetime.h>
@@ -2230,15 +2231,15 @@ bool QTextControl::isWordSelectionEnabled() const
     return d->wordSelectionEnabled;
 }
 
-#ifndef QT_NO_PRINTER
-void QTextControl::print(QPrinter *printer) const
+void QTextControl::print(QPagedPaintDevice *printer) const
 {
-#ifndef QT_NO_PRINTER
     Q_D(const QTextControl);
-    if (!printer || !printer->isValid())
+    if (!printer)
         return;
     QTextDocument *tempDoc = 0;
     const QTextDocument *doc = d->doc;
+    // ####
+#if 0
     if (printer->printRange() == QPrinter::Selection) {
         if (!d->cursor.hasSelection())
             return;
@@ -2253,11 +2254,10 @@ void QTextControl::print(QPrinter *printer) const
         // copy the custom object handlers
         doc->documentLayout()->d_func()->handlers = d->doc->documentLayout()->d_func()->handlers;
     }
+#endif
     doc->print(printer);
     delete tempDoc;
-#endif
 }
-#endif // QT_NO_PRINTER
 
 QMimeData *QTextControl::createMimeDataFromSelection() const
 {
diff --git a/src/gui/text/qtextcontrol_p.h b/src/gui/text/qtextcontrol_p.h
index 87eea3c2f5..95c5f4d56a 100644
--- a/src/gui/text/qtextcontrol_p.h
+++ b/src/gui/text/qtextcontrol_p.h
@@ -75,6 +75,7 @@ class QMimeData;
 class QAbstractScrollArea;
 class QEvent;
 class QTimerEvent;
+class QPagedPaintDevice;
 
 class Q_GUI_EXPORT QTextControl : public QObject
 {
@@ -171,9 +172,7 @@ public:
     bool isWordSelectionEnabled() const;
     void setWordSelectionEnabled(bool enabled);
 
-#ifndef QT_NO_PRINTER
-    void print(QPrinter *printer) const;
-#endif
+    void print(QPagedPaintDevice *printer) const;
 
     virtual int hitTest(const QPointF &point, Qt::HitTestAccuracy accuracy) const;
     virtual QRectF blockBoundingRect(const QTextBlock &block) const;
diff --git a/src/gui/text/qtextdocument.cpp b/src/gui/text/qtextdocument.cpp
index 08b6e0bf14..c3dd72ad41 100644
--- a/src/gui/text/qtextdocument.cpp
+++ b/src/gui/text/qtextdocument.cpp
@@ -65,6 +65,7 @@
 #include "qtextdocument_p.h"
 #include <private/qprinter_p.h>
 #include <private/qabstracttextdocumentlayout_p.h>
+#include "qpagedpaintdevice.h"
 
 #include <limits.h>
 
@@ -1694,7 +1695,7 @@ static void printPage(int index, QPainter *painter, const QTextDocument *doc, co
 }
 
 /*!
-    Prints the document to the given \a printer. The QPrinter must be
+    Prints the document to the given \a device. The QPageablePaintDevice must be
     set up before being used with this function.
 
     This is only a convenience method to print the whole document to the printer.
@@ -1704,33 +1705,30 @@ static void printPage(int index, QPainter *painter, const QTextDocument *doc, co
 
     If the document is not paginated, like for example a document used in a QTextEdit,
     then a temporary copy of the document is created and the copy is broken into
-    multiple pages according to the size of the QPrinter's paperRect(). By default
+    multiple pages according to the size of the paint device's paperRect(). By default
     a 2 cm margin is set around the document contents. In addition the current page
     number is printed at the bottom of each page.
 
-    Note that QPrinter::Selection is not supported as print range with this function since
-    the selection is a property of QTextCursor. If you have a QTextEdit associated with
-    your QTextDocument then you can use QTextEdit's print() function because QTextEdit has
-    access to the user's selection.
-
     \sa QTextEdit::print()
 */
 
-void QTextDocument::print(QPrinter *printer) const
+void QTextDocument::print(QPagedPaintDevice *printer) const
 {
     Q_D(const QTextDocument);
 
-    if (!printer || !printer->isValid())
+    if (!printer)
         return;
 
-    if (!d->title.isEmpty())
-        printer->setDocName(d->title);
+    // ###
+//    if (!d->title.isEmpty())
+//        printer->setDocName(d->title);
 
     bool documentPaginated = d->pageSize.isValid() && !d->pageSize.isNull()
                              && d->pageSize.height() != INT_MAX;
 
-    if (!documentPaginated && !printer->fullPage() && !printer->d_func()->hasCustomPageMargins)
-        printer->setPageMargins(23.53, 23.53, 23.53, 23.53, QPrinter::Millimeter);
+    // ### set page size to paginated size?
+//    if (!documentPaginated && !printer->fullPage() && !printer->d_func()->hasCustomPageMargins)
+//        printer->setPageMargins(23.53, 23.53, 23.53, 23.53, QPrinter::Millimeter);
 
     QPainter p(printer);
 
@@ -1765,7 +1763,7 @@ void QTextDocument::print(QPrinter *printer) const
         scaledPageSize.rwidth() *= dpiScaleX;
         scaledPageSize.rheight() *= dpiScaleY;
 
-        const QSizeF printerPageSize(printer->pageRect().size());
+        const QSizeF printerPageSize(printer->width(), printer->height());
 
         // scale to page
         p.scale(printerPageSize.width() / scaledPageSize.width(),
@@ -1787,17 +1785,12 @@ void QTextDocument::print(QPrinter *printer) const
         layout->d_func()->handlers = documentLayout()->d_func()->handlers;
 
         int dpiy = p.device()->logicalDpiY();
-        int margin = 0;
-        if (printer->fullPage() && !printer->d_func()->hasCustomPageMargins) {
-            // for compatibility
-            margin = (int) ((2/2.54)*dpiy); // 2 cm margins
-            QTextFrameFormat fmt = doc->rootFrame()->frameFormat();
-            fmt.setMargin(margin);
-            doc->rootFrame()->setFrameFormat(fmt);
-        }
+        int margin = (int) ((2/2.54)*dpiy); // 2 cm margins
+        QTextFrameFormat fmt = doc->rootFrame()->frameFormat();
+        fmt.setMargin(margin);
+        doc->rootFrame()->setFrameFormat(fmt);
 
-        QRectF pageRect(printer->pageRect());
-        body = QRectF(0, 0, pageRect.width(), pageRect.height());
+        body = QRectF(0, 0, printer->width(), printer->height());
         pageNumberPos = QPointF(body.width() - margin,
                                 body.height() - margin
                                 + QFontMetrics(doc->defaultFont(), p.device()).ascent()
@@ -1805,18 +1798,10 @@ void QTextDocument::print(QPrinter *printer) const
         clonedDoc->setPageSize(body.size());
     }
 
-    int docCopies;
-    int pageCopies;
-    if (printer->collateCopies() == true){
-        docCopies = 1;
-        pageCopies = printer->supportsMultipleCopies() ? 1 : printer->copyCount();
-    } else {
-        docCopies = printer->supportsMultipleCopies() ? 1 : printer->copyCount();
-        pageCopies = 1;
-    }
-
-    int fromPage = printer->fromPage();
-    int toPage = printer->toPage();
+    int fromPage = 0;
+    int toPage = 0;
+//    int fromPage = printer->fromPage();
+//    int toPage = printer->toPage();
     bool ascending = true;
 
     if (fromPage == 0 && toPage == 0) {
@@ -1833,39 +1818,27 @@ void QTextDocument::print(QPrinter *printer) const
         return;
     }
 
-    if (printer->pageOrder() == QPrinter::LastPageFirst) {
-        int tmp = fromPage;
-        fromPage = toPage;
-        toPage = tmp;
-        ascending = false;
-    }
-
-    for (int i = 0; i < docCopies; ++i) {
+//    if (printer->pageOrder() == QPrinter::LastPageFirst) {
+//        int tmp = fromPage;
+//        fromPage = toPage;
+//        toPage = tmp;
+//        ascending = false;
+//    }
 
-        int page = fromPage;
-        while (true) {
-            for (int j = 0; j < pageCopies; ++j) {
-                if (printer->printerState() == QPrinter::Aborted
-                    || printer->printerState() == QPrinter::Error)
-                    return;
-                printPage(page, &p, doc, body, pageNumberPos);
-                if (j < pageCopies - 1)
-                    printer->newPage();
-            }
+    int page = fromPage;
+    while (true) {
+        printPage(page, &p, doc, body, pageNumberPos);
 
-            if (page == toPage)
-                break;
-
-            if (ascending)
-                ++page;
-            else
-                --page;
+        if (page == toPage)
+            break;
 
-            printer->newPage();
-        }
+        if (ascending)
+            ++page;
+        else
+            --page;
 
-        if ( i < docCopies - 1)
-            printer->newPage();
+        if (!printer->newPage())
+            return;
     }
 }
 #endif
diff --git a/src/gui/text/qtextdocument.h b/src/gui/text/qtextdocument.h
index 268b72e514..363d7abb21 100644
--- a/src/gui/text/qtextdocument.h
+++ b/src/gui/text/qtextdocument.h
@@ -57,7 +57,7 @@ class QTextFormatCollection;
 class QTextListFormat;
 class QRect;
 class QPainter;
-class QPrinter;
+class QPagedPaintDevice;
 class QAbstractTextDocumentLayout;
 class QPoint;
 class QTextObject;
@@ -206,9 +206,7 @@ public:
 
     bool isModified() const;
 
-#ifndef QT_NO_PRINTER
-    void print(QPrinter *printer) const;
-#endif
+    void print(QPagedPaintDevice *printer) const;
 
     enum ResourceType {
         HtmlResource  = 1,
diff --git a/src/widgets/widgets/qwidgettextcontrol.cpp b/src/widgets/widgets/qwidgettextcontrol.cpp
index 462fe094cf..0f241136a5 100644
--- a/src/widgets/widgets/qwidgettextcontrol.cpp
+++ b/src/widgets/widgets/qwidgettextcontrol.cpp
@@ -2426,7 +2426,6 @@ bool QWidgetTextControl::isWordSelectionEnabled() const
 #ifndef QT_NO_PRINTER
 void QWidgetTextControl::print(QPrinter *printer) const
 {
-#ifndef QT_NO_PRINTER
     Q_D(const QWidgetTextControl);
     if (!printer || !printer->isValid())
         return;
@@ -2448,7 +2447,6 @@ void QWidgetTextControl::print(QPrinter *printer) const
     }
     doc->print(printer);
     delete tempDoc;
-#endif
 }
 #endif // QT_NO_PRINTER