From a85913d21a0cfdf129fdbece9308d8d4bf84d8d0 Mon Sep 17 00:00:00 2001
From: Martin Vermeer <martin.vermeer@hut.fi>
Date: Mon, 6 Jun 2005 12:34:28 +0000
Subject: [PATCH] Lars's key input queue

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@9999 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/BufferView_pimpl.C           |  8 ++-----
 src/ChangeLog                    |  5 +++++
 src/frontends/qt2/ChangeLog      |  7 +++++++
 src/frontends/qt2/QContentPane.C | 36 +++++++++++++++++++++++++++++---
 src/frontends/qt2/QContentPane.h |  8 +++++++
 5 files changed, 55 insertions(+), 9 deletions(-)

diff --git a/src/BufferView_pimpl.C b/src/BufferView_pimpl.C
index 0617392056..8753da7fbe 100644
--- a/src/BufferView_pimpl.C
+++ b/src/BufferView_pimpl.C
@@ -520,12 +520,8 @@ void BufferView::Pimpl::workAreaKeyPress(LyXKeySymPtr key,
 	 * of the cursor. Note we cannot do this inside
 	 * dispatch() itself, because that's called recursively.
 	 */
-	if (available()) {
-		screen().prepareCursor();
-		cursor_timeout.setTimeout(100);
-		cursor_timeout.restart();
-		cursor_timeout.setTimeout(400);
-	}
+	if (available())
+		screen().showCursor(*bv_);
 }
 
 
diff --git a/src/ChangeLog b/src/ChangeLog
index 0bc6d26e46..3907b72139 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2005-06-06  Martin Vermeer  <martin.vermeer@hut.fi>
+
+	* BufferView_pimpl.C: revert to showCursor in connection with
+	Lars's front-end stack
+
 2005-06-06  Jürgen Spitzmüller  <j.spitzmueller@gmx.de>
 
 	* text.C (redoParagraph): move cursor right after a bibitem 
diff --git a/src/frontends/qt2/ChangeLog b/src/frontends/qt2/ChangeLog
index dcc1a7df7b..b0d223dedf 100644
--- a/src/frontends/qt2/ChangeLog
+++ b/src/frontends/qt2/ChangeLog
@@ -1,3 +1,10 @@
+2005-06-06  Lars Gullik Bjonnes  <larsbj@gullik.net>
+	(Committed Martin Vermeer <martin.vermeer@hut.fi>)
+
+	* QContentPane.[Ch]: implement keystroke event stack with
+	repeat key "regulation". Key are not sent to LyX core faster
+	than rendering can handle. 
+
 2005-06-03  Jürgen Spitzmüller  <j.spitzmueller@gmx.de>
 
 	* QContentPane.[Ch]: Limit the QIM*Events to X11. They are not
diff --git a/src/frontends/qt2/QContentPane.C b/src/frontends/qt2/QContentPane.C
index 7fb3ca107d..1731af6c6d 100644
--- a/src/frontends/qt2/QContentPane.C
+++ b/src/frontends/qt2/QContentPane.C
@@ -19,7 +19,6 @@
 
 #include <qapplication.h>
 #include <qpainter.h>
-#include <qtimer.h>
 
 #include <boost/bind.hpp>
 
@@ -90,6 +89,8 @@ QContentPane::QContentPane(QWorkArea * parent)
 		boost::bind(&QContentPane::generateSyntheticMouseEvent,
 			    this));
 
+	connect(&step_timer_, SIGNAL(timeout()), SLOT(keyeventTimeout()));
+
 	setFocusPolicy(QWidget::WheelFocus);
 	setFocus();
 	setCursor(ibeamCursor);
@@ -101,6 +102,9 @@ QContentPane::QContentPane(QWorkArea * parent)
 	// stupid moc strikes again
 	connect(wa_->scrollbar_, SIGNAL(valueChanged(int)),
 		this, SLOT(scrollBarChanged(int)));
+
+	// Start the timer, one-shot.
+	step_timer_.start(25, true);
 }
 
 
@@ -251,9 +255,35 @@ void QContentPane::wheelEvent(QWheelEvent * e)
 
 void QContentPane::keyPressEvent(QKeyEvent * e)
 {
+	keyeventQueue_.push(boost::shared_ptr<QKeyEvent>(new QKeyEvent(*e)));
+}
+
+
+void QContentPane::keyeventTimeout()
+{
+	bool handle_autos = true;
+
+	while (!keyeventQueue_.empty()) {
+		boost::shared_ptr<QKeyEvent> ev = keyeventQueue_.front();
+
+		// We never handle more than one auto repeated
+		// char in a list of queued up events.
+		if (!handle_autos && ev->isAutoRepeat()) {
+			keyeventQueue_.pop();
+			continue;
+		}
+
 	boost::shared_ptr<QLyXKeySym> sym(new QLyXKeySym);
-	sym->set(e);
-	wa_->workAreaKeyPress(sym, q_key_state(e->state()));
+		sym->set(ev.get());
+
+		wa_->workAreaKeyPress(sym, q_key_state(ev->state()));
+		keyeventQueue_.pop();
+
+		handle_autos = false;
+	}
+
+	// Restart the timer.
+	step_timer_.start(25, true);
 }
 
 
diff --git a/src/frontends/qt2/QContentPane.h b/src/frontends/qt2/QContentPane.h
index 7cde77b24d..65a02b7bbe 100644
--- a/src/frontends/qt2/QContentPane.h
+++ b/src/frontends/qt2/QContentPane.h
@@ -21,9 +21,12 @@
 
 #include <qwidget.h>
 #include <qpixmap.h>
+#include <qtimer.h>
 
 #include <boost/scoped_ptr.hpp>
 
+#include <queue>
+
 #if (defined(Q_WS_X11) && QT_VERSION >= 0x030200)
 #define USE_INPUT_METHODS 1
 #endif
@@ -115,6 +118,8 @@ public slots:
 	void doubleClickTimeout();
 
 	void scrollBarChanged(int);
+	void keyeventTimeout();
+
 private:
 	/// The slot connected to SyntheticMouseEvent::timeout.
 	void generateSyntheticMouseEvent();
@@ -125,6 +130,9 @@ private:
 	/// owning widget
 	QWorkArea * wa_;
 
+	QTimer step_timer_;
+	std::queue<boost::shared_ptr<QKeyEvent> > keyeventQueue_;
+
 	/// the double buffered pixmap
 	boost::scoped_ptr<QPixmap> pixmap_;