Preview printing

src/doc/user/usermanual.sgml

@@ -854,6 +854,11 @@ fvwm
       associated to the document (ie: author, abtract, etc.). This is
       especially useful in cases where the term match did not occur in
       the main text but in one of the fields.</para>
+	
+      <para>You can print the current preview window contents by typing
+	 <keycap>^P</keycap> (<keycap>Ctrl</keycap> + <keycap>P</keycap>) in 
+	the window text.</para> 
+	
 
     </sect1>
 
@@ -1462,6 +1467,11 @@ fvwm
         window and all its tabs.</para>
       </formalpara>
 
+      <formalpara><title>Printing previews</title> 
+       <para>Entering <keycap>^P</keycap> in a preview window will print 
+	the currently displayed text.</para>
+      </formalpara>
+
       <formalpara><title>Quitting</title>
       <para>Entering <keycap>^Q</keycap> almost anywhere will
         close the application.</para>

src/qtgui/preview_w.cpp

@@ -33,18 +33,28 @@ using std::pair;
 #include <qvariant.h>
 #include <qpushbutton.h>
 #include <qtabwidget.h>
+#include <qprinter.h>
+#include <qprintdialog.h>
+
 #if (QT_VERSION < 0x040000)
 #include <qtextedit.h>
 #include <qpopupmenu.h>
 #include <qprogressdialog.h>
 #define THRFINISHED finished
+#include <qpaintdevicemetrics.h>
+#include <qsimplerichtext.h>
 #else
 #include <q3popupmenu.h>
 #include <q3textedit.h>
 #include <q3progressdialog.h>
 #include <q3stylesheet.h>
+#include <q3paintdevicemetrics.h>
+#define QPaintDeviceMetrics Q3PaintDeviceMetrics
+#include <q3simplerichtext.h>
+#define QSimpleRichText Q3SimpleRichText
 #define THRFINISHED isFinished
 #endif
+
 #include <qevent.h>
 #include <qlabel.h>
 #include <qlineedit.h>
@@ -204,6 +214,8 @@ void Preview::init()
     connect(pvTab, SIGNAL(currentChanged(QWidget *)), 
 	    this, SLOT(currentChanged(QWidget *)));
     connect(bt, SIGNAL(clicked()), this, SLOT(closeCurrentTab()));
+    connect(this, SIGNAL(printCurrentPreviewRequest()), 
+            this, SLOT(printCurrent()));
 
     m_dynSearchActive = false;
     m_canBeep = true;
@@ -266,6 +278,11 @@ bool Preview::eventFilter(QObject *target, QEvent *event)
 	// LOGDEB(("Preview::eventFilter: got ^W\n"));
 	closeCurrentTab();
 	return true;
+    } else if (keyEvent->key() == Qt::Key_P &&
+	       (keyEvent->state() & Qt::ControlButton)) {
+	// LOGDEB(("Preview::eventFilter: got ^P\n"));
+	emit(printCurrentPreviewRequest());
+	return true;
     } else if (m_dynSearchActive) {
 	if (keyEvent->key() == Qt::Key_F3) {
 	    doSearch(searchTextLine->text(), true, false);
@@ -449,6 +466,64 @@ void Preview::currentChanged(QWidget * tw)
 	emit(previewExposed(this, m_searchId, d->docnum));
 }
 
+void Preview::printCurrent()
+{
+    PreviewTextEdit *edit = Preview::getCurrentEditor();
+    if (edit == 0) 
+        return;
+    TabData *d = tabDataForCurrent();
+    if (d == 0) 
+        return;
+	
+#ifndef QT_NO_PRINTER
+    QPrinter printer;
+    QPrintDialog *dialog = new QPrintDialog(&printer, this);
+#if (QT_VERSION >= 0x040000)
+    dialog->setWindowTitle(tr("Print Current Preview"));
+#endif
+    if (dialog->exec() != QDialog::Accepted)
+        return;
+
+    // A qt4 version of this would just be :
+    // edit->document()->print(&printer); But as we are using a
+    // q3textedit, we have to do the q3 printing dance, even under
+    // qt4. The following code is taken from
+    // qt3/examples/textdrawing/qtextedit.cpp
+    printer.setFullPage(TRUE);
+    QPaintDeviceMetrics screen( edit );
+    printer.setResolution( screen.logicalDpiY() );
+    QPainter p( &printer );
+    QPaintDeviceMetrics metrics( p.device() );
+    int dpix = metrics.logicalDpiX();
+    int dpiy = metrics.logicalDpiY();
+    const int margin = 72; // pt
+    QRect body( margin * dpix / 72, margin * dpiy / 72,
+                metrics.width() - margin * dpix / 72 * 2,
+                metrics.height() - margin * dpiy / 72 * 2 );
+    QFont font( "times", 10 );
+    // Dont want to use edit->text() here, this is the plain text. We 
+    // want the rich text.
+    QSimpleRichText richText(d->richtxt, font, edit->context(), 
+                             edit->styleSheet(),
+                             edit->mimeSourceFactory(), body.height() );
+    richText.setWidth( &p, body.width() );
+    QRect view( body );
+    int page = 1;
+    do {
+        richText.draw( &p, body.left(), body.top(), view, colorGroup() );
+        view.moveBy( 0, body.height() );
+        p.translate( 0 , -body.height() );
+        p.setFont( font );
+        p.drawText( view.right() - p.fontMetrics().width( QString::number( page ) ),
+                    view.bottom() + p.fontMetrics().ascent() + 5, QString::number( page ) );
+        if ( view.top()  >= richText.height() )
+            break;
+        printer.newPage();
+        page++;
+    } while (TRUE);
+#endif
+}
+
 #if (QT_VERSION >= 0x040000)
 // I have absolutely no idea why this nonsense is needed to get
 // q3textedit to copy to x11 primary selection when text is
@@ -912,6 +987,7 @@ bool Preview::loadFileInCurrentTab(string fn, size_t sz, const Rcl::Doc &idoc,
 	item->setColor(prefs.qtermcolor);
 	item->setFontWeight(QFont::Bold);
     }
+    TabData *d = tabDataForCurrent();
 
     prog = 2 * nsteps / 3;
     progress.setLabelText(tr("Loading preview text into editor"));
@@ -923,6 +999,10 @@ bool Preview::loadFileInCurrentTab(string fn, size_t sz, const Rcl::Doc &idoc,
 	qApp->processEvents();
 
 	editor->append(*it);
+        // We need to save the rich text for printing, the editor does
+        // not do it for us
+        if (d)
+            d->richtxt.append(*it);
 
 	// Stay at top
 	if (instep < 5) {
@@ -938,9 +1018,8 @@ bool Preview::loadFileInCurrentTab(string fn, size_t sz, const Rcl::Doc &idoc,
     }
 
     progress.close();
-    TabData *d = tabDataForCurrent();
     if (d) {
-	fdoc.text.clear();
+	fdoc.text.clear(); 
 	d->fdoc = fdoc;
     }
     m_haveAnchors = m_plaintorich.lastanchor != 0;

src/qtgui/preview_w.h

@@ -74,6 +74,7 @@ class TabData {
     // doc out of internfile (previous fields come from the index) with
     // main text erased (for space).
     Rcl::Doc fdoc; 
+    QString  richtxt;
     TabData(QWidget *wi) 
 	: w(wi), docnum(-1) 
     {}
@@ -141,6 +142,7 @@ public slots:
     virtual void closeCurrentTab();
     virtual void textDoubleClicked(int, int);
     virtual void selecChanged();
+    virtual void printCurrent();
 
 signals:
     void previewClosed(Preview *);
@@ -148,6 +150,7 @@ signals:
     void showNext(Preview *w, int sid, int docnum);
     void showPrev(Preview *w, int sid, int docnum);
     void previewExposed(Preview *w, int sid, int docnum);
+    void printCurrentPreviewRequest();
 
 private:
     // Identifier of search in main window. This is used to check that