Make printing work properly when there is a column wider than our paper

1 files changed, 42 insertions, 27 deletions

diff --git a/examples/spreadsheet/spreadsheet.cpp b/examples/spreadsheet/spreadsheet.cpp
index 77ba13f..65fb574 100644
--- a/examples/spreadsheet/spreadsheet.cpp
+++ b/examples/spreadsheet/spreadsheet.cpp
@@ -72,8 +72,6 @@ void SpreadSheet::print()
     printer.setPaperSize(QSizeF(106, 80), QPrinter::Millimeter);
     printer.setResolution(600);
     QPainter painter(&printer);
-//painter.setPen(QPen(QColor(Qt::red)));
-//painter.drawRect(QRectF(QPointF(), printer.pageRect().size()));
 
     const qreal scaleX = printer.logicalDpiX() / (qreal) qt_defaultDpiX();
     const qreal scaleY = printer.logicalDpiY() / (qreal) qt_defaultDpiY();
@@ -87,14 +85,19 @@ void SpreadSheet::print()
     QtGraphicsTableView *view = controller->view();
     Q_ASSERT(view);
     QGraphicsScene *scene = view->scene();
+    Q_ASSERT(scene);
 
     const int oldFirstRow = view->firstRow();
     const int oldFirstColumn = view->firstColumn();
     const QRectF oldGeometry = view->geometry();
+    const qreal oldHorizontalOffset = view->horizontalOffset();
+    view->setGeometry(0, 0, visibleSize.width(), visibleSize.height());
+    view->setHorizontalOffset(0);
 
     int row = 0;
     int column;
     bool first = true;
+    qreal offsetInColumn = 0; // for those columns too wide and thus split over more than one page
     while (row < controller->model()->rowCount()) {
         column = 0;
         view->setFirstRow(row);
@@ -113,12 +116,25 @@ void SpreadSheet::print()
                 printer.newPage();
             first = false;
             view->setFirstColumn(column);
+            view->setHorizontalOffset(offsetInColumn);
 
             qreal width = visibleSize.width();
             while (true) {
                 const qreal columnWidth = controller->view()->columnWidth(column);
-                if (width - columnWidth < 0)
+                if (width == visibleSize.width() && columnWidth - offsetInColumn > visibleSize.width()) {
+                    // the column doesn't fit on a page. Lets split it.
+                    offsetInColumn += visibleSize.width();
                     break;
+                } else if (offsetInColumn > 0) { // we still have a part of a split column to print!
+                    width -= columnWidth - offsetInColumn;
+                    offsetInColumn = 0;
+                    ++column;
+                    continue;
+                }
+
+                if (width - columnWidth + offsetInColumn < 0) {
+                    break;
+                }
                 if (column >= controller->model()->columnCount())
                     break;
                 ++column;
@@ -128,34 +144,31 @@ void SpreadSheet::print()
             painter.setPen(QPen(QColor(Qt::green)));
             painter.drawRect(QRectF(0, 0, visibleSize.width() - width, visibleSize.height() - height));
 #endif
-            view->setGeometry(0, 0, visibleSize.width() - width, visibleSize.height() - height);
             view->doLayout();
-            // paint children
-            if (scene) {
-                QList<QGraphicsItem*> items = scene->items(view->rect());
-                QList<QGraphicsItem*>::Iterator iter = items.begin();
-                for (;iter != items.end(); ++iter) {
-                    QGraphicsItem *parent = *iter;
-                    while (parent != view && parent != 0)
-                        parent = parent->parentItem();
-                    if (parent == 0)
-                        continue;
-                    if (!(*iter)->isVisible())
-                        continue;
-                    painter.save();
-                    painter.translate((*iter)->mapToItem(view, QPointF()));
+            // find and paint children which are the cells
+            QList<QGraphicsItem*> items = scene->items(view->rect());
+            QList<QGraphicsItem*>::Iterator iter = items.begin();
+            for (;iter != items.end(); ++iter) {
+                QGraphicsItem *parent = *iter;
+                while (parent != view && parent != 0)
+                    parent = parent->parentItem();
+                if (parent == 0)
+                    continue;
+                if (!(*iter)->isVisible())
+                    continue;
+                painter.save();
+                painter.translate((*iter)->mapToItem(view, QPointF()));
 #ifdef DEBUG_TABLES
-                    QGraphicsWidget *w = dynamic_cast<QGraphicsWidget*>(*iter);
-                    if (w) {
-                        painter.save();
-                        painter.setPen(QPen(QColor(Qt::red)));
-                        painter.drawRect(QRectF(QPointF(), w->size()));
-                        painter.restore();
-                    }
-#endif
-                    (*iter)->paint(&painter, 0);
+                QGraphicsWidget *w = dynamic_cast<QGraphicsWidget*>(*iter);
+                if (w) {
+                    painter.save();
+                    painter.setPen(QPen(QColor(Qt::red)));
+                    painter.drawRect(QRectF(QPointF(), w->size()));
                     painter.restore();
                 }
+#endif
+                (*iter)->paint(&painter, 0);
+                painter.restore();
             }
         }
     }
@@ -163,6 +176,7 @@ void SpreadSheet::print()
     view->setFirstRow(oldFirstRow);
     view->setFirstColumn(oldFirstColumn);
     view->setGeometry(oldGeometry);
+    view->setHorizontalOffset(oldHorizontalOffset);
 }
 
 void SpreadSheet::updateStatus(int row, int column)
@@ -292,4 +306,5 @@ void SpreadSheet::setupContents()
 
     table->setItem(9, 5, new QtTableDefaultItem("sum F2 F9"));
     table->item(9,5)->setBackground(Qt::lightGray);
+
 }