Introduce new RC option for QImage backend instead of macro. This can later be changed at runtime though a command line option or by auto detecting the X11 remote status.

This option is set to true by default as this is the most widespread use case.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@40515 a592a061-630c-0410-9148-cb99ea01b6c8

src/LyXRC.cpp

@@ -199,6 +199,7 @@ LexerKeyword lyxrcTags[] = {
 	{ "\\use_converter_cache", LyXRC::RC_USE_CONVERTER_CACHE },
 	{ "\\use_lastfilepos", LyXRC::RC_USELASTFILEPOS },
 	{ "\\use_pixmap_cache", LyXRC::RC_USE_PIXMAP_CACHE },
+	{ "\\use_qimage", LyXRC::RC_USE_QIMAGE },
 	// compatibility with versions older than 1.4.0 only
 	{ "\\use_system_colors", LyXRC::RC_USE_SYSTEM_COLORS },
 	{ "\\use_tooltip", LyXRC::RC_USE_TOOLTIP },
@@ -337,6 +338,7 @@ void LyXRC::setDefaults()
 	use_system_colors = false;
 	use_tooltip = true;
 	use_pixmap_cache = false;
+	use_qimage = true;
 	converter_cache_maxage = 6 * 30 * 24 * 3600; // 6 months
 	user_name = to_utf8(support::user_name());
 	user_email = to_utf8(support::user_email());
@@ -951,6 +953,9 @@ LyXRC::ReturnValues LyXRC::read(Lexer & lexrc, bool check_format)
 		case RC_USE_PIXMAP_CACHE:
 			lexrc >> use_pixmap_cache;
 			break;
+		case RC_USE_QIMAGE:
+			lexrc >> use_qimage;
+			break;
 		case RC_SPELLCHECKER:
 			lexrc >> spellchecker;
 			break;
@@ -2439,6 +2444,15 @@ void LyXRC::write(ostream & os, bool ignore_system_lyxrc, string const & name) c
 		}
 		if (tag != RC_LAST)
 			break;
+	case RC_USE_QIMAGE:
+		if (ignore_system_lyxrc ||
+		    use_qimage != system_lyxrc.use_qimage) {
+			os << "\\use_qimage "
+			   << convert<string>(use_qimage)
+			   << '\n';
+		}
+		if (tag != RC_LAST)
+			break;
 
 		os << "\n#\n"
 		   << "# LANGUAGE SUPPORT SECTION ##########################\n"
@@ -2993,6 +3007,7 @@ void actOnUpdatedPrefs(LyXRC const & lyxrc_orig, LyXRC const & lyxrc_new)
 	case LyXRC::RC_USE_SYSTEM_COLORS:
 	case LyXRC::RC_USE_TOOLTIP:
 	case LyXRC::RC_USE_PIXMAP_CACHE:
+	case LyXRC::RC_USE_QIMAGE:
 	case LyXRC::RC_VIEWDVI_PAPEROPTION:
 	case LyXRC::RC_SINGLE_CLOSE_TAB_BUTTON:
 	case LyXRC::RC_SINGLE_INSTANCE:

src/LyXRC.h

@@ -185,6 +185,7 @@ public:
 		RC_USE_SYSTEM_COLORS,
 		RC_USE_TOOLTIP,
 		RC_USE_PIXMAP_CACHE,
+		RC_USE_QIMAGE,
 		RC_VIEWDVI_PAPEROPTION,
 		RC_VIEWER,
 		RC_VIEWER_ALTERNATIVES,
@@ -361,6 +362,8 @@ public:
 	bool use_system_colors;
 	/// Use pixmap cache?
 	bool use_pixmap_cache;
+	/// Use QImage backend?
+	bool use_qimage;
 	/// Spellchecker engine: aspell, hunspell, etc
 	std::string spellchecker;
 	/// Alternate language for spellchecker

src/frontends/qt4/GuiWorkArea.cpp

@@ -237,7 +237,7 @@ SyntheticMouseEvent::SyntheticMouseEvent()
 
 
 GuiWorkArea::Private::Private(GuiWorkArea * parent)
-: p(parent), buffer_view_(0), lyx_view_(0), cursor_visible_(false),
+: p(parent), screen_(0), buffer_view_(0), lyx_view_(0), cursor_visible_(false),
 need_resize_(false), schedule_redraw_(false), preedit_lines_(1),
 completer_(new GuiCompleter(p, p))
 {
@@ -319,6 +319,7 @@ void GuiWorkArea::init()
 GuiWorkArea::~GuiWorkArea()
 {
 	d->buffer_view_->buffer().workAreaManager().remove(this);
+	delete d->screen_;
 	delete d->buffer_view_;
 	delete d->cursor_;
 	// Completer has a QObject parent and is thus automatically destroyed.
@@ -1120,11 +1121,11 @@ void GuiWorkArea::paintEvent(QPaintEvent * ev)
 	}
 
 	QPainter pain(viewport());
-#ifdef USE_QIMAGE
-	pain.drawImage(rc, d->screen_, rc);
-#else
-	pain.drawPixmap(rc, d->screen_, rc);
-#endif
+	if (lyxrc.use_qimage) {
+		pain.drawImage(rc, static_cast<QImage const &>(*d->screen_), rc);
+	} else {
+		pain.drawPixmap(rc, static_cast<QPixmap const &>(*d->screen_), rc);
+	}
 	d->cursor_->draw(pain);
 	ev->accept();
 }
@@ -1132,7 +1133,7 @@ void GuiWorkArea::paintEvent(QPaintEvent * ev)
 
 void GuiWorkArea::Private::updateScreen()
 {
-	GuiPainter pain(&screen_);
+	GuiPainter pain(screen_);
 	buffer_view_->draw(pain);
 }
 
@@ -1204,7 +1205,7 @@ void GuiWorkArea::inputMethodEvent(QInputMethodEvent * e)
 		return;
 	}
 
-	GuiPainter pain(&d->screen_);
+	GuiPainter pain(d->screen_);
 	d->buffer_view_->updateMetrics();
 	d->buffer_view_->draw(pain);
 	FontInfo font = d->buffer_view_->cursor().getFont().fontInfo();

src/frontends/qt4/GuiWorkArea_Private.h

@@ -12,24 +12,17 @@
 #ifndef WORKAREA_PRIVATE_H
 #define WORKAREA_PRIVATE_H
 
-// Comment out to use QImage backend instead of QPixmap. This won't have any
-// effect on Windows, MacOSX and most X11 environment when running locally.
-// When running remotely on X11, this may have a big performance penalty.
-//#define USE_QIMAGE
-
 #include "FuncRequest.h"
 #include "qt_helpers.h"
+#include "LyXRC.h"
 
 #include "support/docstring.h"
 #include "support/Timeout.h"
 
 #include <QAbstractScrollArea>
 #include <QMouseEvent>
-#ifdef USE_QIMAGE
 #include <QImage>
-#else
 #include <QPixmap>
-#endif
 #include <QTimer>
 
 class QContextMenuEvent;
@@ -109,11 +102,11 @@ struct GuiWorkArea::Private
 	void resizeBufferView();
 
 	/// paint the cursor and store the background
-	virtual void showCursor(int x, int y, int h,
+	void showCursor(int x, int y, int h,
 		bool l_shape, bool rtl, bool completable);
 
 	/// hide the cursor
-	virtual void removeCursor();
+	void removeCursor();
 	///
 	void dispatch(FuncRequest const & cmd0, KeyModifier = NoModifier);
 	/// hide the visible cursor, if it is visible
@@ -127,25 +120,20 @@ struct GuiWorkArea::Private
 	///
 	void setCursorShape(Qt::CursorShape shape);
 
-#ifdef USE_QIMAGE
 	void resetScreen()
 	{
-		screen_ = QImage(p->viewport()->width(), p->viewport()->height(),
-			QImage::Format_ARGB32_Premultiplied);
+		delete screen_;
+		if (lyxrc.use_qimage) {
+			screen_ = new QImage(p->viewport()->width(), p->viewport()->height(),
+				QImage::Format_ARGB32_Premultiplied);
+		} else {
+			screen_ = new QPixmap(p->viewport()->width(), p->viewport()->height());
+		}
 	}
-
-	QImage screen_;
-#else
-	void resetScreen()
-	{
-		screen_ = QPixmap(p->viewport()->width(), p->viewport()->height());
-	}
-
-	QPixmap screen_;
-#endif
 	///
 	GuiWorkArea * p;
-
+	///
+	QPaintDevice * screen_;
 	///
 	BufferView * buffer_view_;
 	/// Read only Buffer status cache.