better mouse pointer handling, actualy makes sense now

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@658 a592a061-630c-0410-9148-cb99ea01b6c8

ChangeLog

@@ -1,5 +1,18 @@
 2000-04-14  Lars Gullik Bjønnes  <larsbj@lyx.org>
 
+	* src/WorkArea.C (work_area_handler): call BufferView::enterView
+	and Buffer::leaveView when FL_ENTER and FL_LEAVE.
+
+	* src/BufferView.C (enterView): new func
+	(leaveView): new func
+
+	* src/BufferView_pimpl.C (enterView): new func, sets xterm cursor
+	when approp.
+	(leaveView): new func, undefines xterm cursor when approp.
+
+	* src/bufferview_funcs.C: moved SetXCursor to BufferView_pimp.C
+	(AllowInput): delete the Workarea cursor handling from this func.
+
 	* src/Painter.C (underline): draw a slimer underline in most cases.
 
 	* src/lyx_main.C (error_handler): use extern "C"

src/BufferView.C

@@ -148,6 +148,18 @@ void BufferView::upCB(long time, int button)
 }
 
 
+void BufferView::enterView()
+{
+	pimpl_->enterView();
+}
+
+
+void BufferView::leaveView()
+{
+	pimpl_->leaveView();
+}
+
+
 // Callback for scrollbar slider
 void BufferView::scrollCB(double value)
 {

src/BufferView.h

@@ -218,6 +218,10 @@ public:
 	///
 	void tripleClick(int x, int y, unsigned int button);
 	///
+	void enterView();
+	///
+	void leaveView();
+	///
 	void workAreaSelectionNotify(Window win, XEvent * event);
 private:
 	struct Pimpl;

src/BufferView_pimpl.C

@@ -51,6 +51,21 @@ void waitForX()
 }
 
 
+static
+void SetXtermCursor(Window win)
+{
+	static Cursor cursor;
+	static bool cursor_undefined = true;
+	if (cursor_undefined){
+		cursor = XCreateFontCursor(fl_display, XC_xterm);
+		XFlush(fl_display);
+		cursor_undefined = false;
+	}
+	XDefineCursor(fl_display, win, cursor);
+	XFlush(fl_display);
+}
+
+
 BufferView::Pimpl::Pimpl(BufferView * b, LyXView * o,
 	     int xpos, int ypos, int width, int height)
 	: bv_(b), owner_(o)
@@ -65,6 +80,7 @@ BufferView::Pimpl::Pimpl(BufferView * b, LyXView * o,
 	workarea->setFocus();
 	work_area_focus = true;
 	lyx_focus = false;
+	using_xterm_cursor = false;
 }
 
 
@@ -747,6 +763,24 @@ void BufferView::Pimpl::tripleClick(int /*x*/, int /*y*/, unsigned int button)
 }
 
 
+void BufferView::Pimpl::enterView()
+{
+	if (active() && available()) {
+		SetXtermCursor(workarea->getWin());
+		using_xterm_cursor = true;
+	}
+}
+
+
+void BufferView::Pimpl::leaveView()
+{
+	if (using_xterm_cursor) {
+		XUndefineCursor(fl_display, workarea->getWin());
+		using_xterm_cursor = false;
+	}
+}
+
+
 void BufferView::Pimpl::workAreaButtonRelease(int x, int y, unsigned int button)
 {
 	if (buffer_ == 0 || screen == 0) return;

src/BufferView_pimpl.h

@@ -77,6 +77,10 @@ struct BufferView::Pimpl {
 	///
 	void tripleClick(int x, int y, unsigned int button);
 	///
+	void enterView();
+	///
+	void leaveView();
+	///
 	void cursorToggle();
 	///
 	void cursorPrevious();
@@ -142,5 +146,7 @@ struct BufferView::Pimpl {
 	WorkArea * workarea;
 	///
 	UpdateInset updatelist;
+private:
+	bool using_xterm_cursor;
 };
 #endif

src/WorkArea.C

@@ -428,9 +428,11 @@ int WorkArea::work_area_handler(FL_OBJECT * ob, int event,
 		break;
 	case FL_ENTER:
 		lyxerr.debug() << "Workarea event: ENTER" << endl;
+		area->owner->enterView();
 		break;
 	case FL_LEAVE:
 		lyxerr.debug() << "Workarea event: LEAVE" << endl;
+		area->owner->leaveView();
 		break;
 	case FL_DBLCLICK:
 		if (!ev) break;

src/bufferview_funcs.C

@@ -17,21 +17,6 @@ extern FD_form_paragraph * fd_form_paragraph;
 extern FD_form_character * fd_form_character;
 
 
-static
-void SetXtermCursor(Window win)
-{
-	static Cursor cursor;
-	static bool cursor_undefined = true;
-	if (cursor_undefined){
-		cursor = XCreateFontCursor(fl_display, XC_xterm);
-		XFlush(fl_display);
-		cursor_undefined = false;
-	}
-	XDefineCursor(fl_display, win, cursor);
-	XFlush(fl_display);
-}
-
-
 void Foot(BufferView * bv)
 {
 	if (!bv->available()) 
@@ -190,10 +175,6 @@ void AllowInput(BufferView * bv)
 		XUndefineCursor(fl_display,
 				fd_form_character->form_character->window);
 
-	// What to do about this? (Lgb)
-	if (bv->belowMouse())
-		SetXtermCursor(bv->owner()->getForm()->window);
-
 	XFlush(fl_display);
 	fl_activate_all_forms();
 }
@@ -258,8 +239,10 @@ string CurrentState(BufferView * bv)
 		// font. (Asger)
 		Buffer * buffer = bv->buffer();
 		LyXFont font = bv->text->real_current_font;
-		LyXFont defaultfont = textclasslist.TextClass(buffer->
+		LyXFont const & defaultfont =
-							      params.textclass).defaultfont();
+			textclasslist
+			.TextClass(buffer->params.textclass)
+			.defaultfont();
 		font.reduce(defaultfont);
 		state = _("Font: ") + font.stateText();
 		// The paragraph depth
@@ -297,7 +280,6 @@ string CurrentState(BufferView * bv)
 }
 
 
-// candidate for move to BufferView
 /* -------> Does the actual toggle job of the XxxCB() calls above.
  * Also shows the current font state.
  */