fitCursor work

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@8079 a592a061-630c-0410-9148-cb99ea01b6c8

src/BufferView.C

@@ -369,25 +369,6 @@ void BufferView::replaceWord(string const & replacestring)
 }
 
 
-bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
-{
-	lyxerr << "BufferView::fitLockedInsetCursor x: " << x
-		<< " y: " << y << std::endl;
-	UpdatableInset * tli =
-		static_cast<UpdatableInset *>(cursor().innerInset());
-	if (tli && available()) {
-		lyxerr << "    text->cursor.y: " << text->cursor.y() << std::endl;
-		lyxerr << "    insetInInsetY: " << tli->insetInInsetY() << std::endl;
-		y += text->cursor.y() + tli->insetInInsetY();
-		if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
-			updateScrollbar();
-			return true;
-		}
-	}
-	return false;
-}
-
-
 void BufferView::hideCursor()
 {
 	screen().hideCursor();

src/BufferView_pimpl.C

@@ -313,7 +313,7 @@ void BufferView::Pimpl::buffer(Buffer * b)
 			resizeCurrentBuffer();
 
 		// FIXME: needed when ?
-		top_y(screen().topCursorVisible(bv_->text));
+		fitCursor();
 
 		// Buffer-dependent dialogs should be updated or
 		// hidden. This should go here because some dialogs (eg ToC)
@@ -343,42 +343,11 @@ void BufferView::Pimpl::buffer(Buffer * b)
 bool BufferView::Pimpl::fitCursor()
 {
 	lyxerr << "BufferView::Pimpl::fitCursor." << endl;
-
-	int x,y;
-	bv_->cursor().getPos(x, y);
-
-	if (y < top_y() || y > top_y() + workarea().workHeight()) {
-		int newtop = y - workarea().workHeight() / 2;
-		newtop = std::max(0, newtop);
-		top_y(newtop);
+	if (screen().fitCursor(bv_)) {
 		updateScrollbar();
 		return true;
 	}
 	return false;
-
-// dead code below
-	bool ret;
-#if 0	
-	UpdatableInset * tli =
-		static_cast<UpdatableInset *>(cursor_.innerInset());
-	if (tli) {
-		tli->fitInsetCursor(bv_);
-		ret = true;
-	} else {
-		ret = screen().fitCursor(bv_->text, bv_);
-	}
-#endif
-#if 0
-	ret = screen().fitCursor(bv_->text, bv_);
-#endif
-
-	//dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
-
-	// We need to always update, in case we did a
-	// paste and we stayed anchored to a row, but
-	// the actual height of the doc changed ...
-	updateScrollbar();
-	return ret;
 }
 
 
@@ -446,7 +415,7 @@ void BufferView::Pimpl::resizeCurrentBuffer()
 		}
 	}
 
-	top_y(screen().topCursorVisible(bv_->text));
+	fitCursor();
 
 	switchKeyMap();
 	owner_->busy(false);
@@ -973,8 +942,8 @@ bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd)
 					theTempCursor.pop();
 					bv_->cursor() = theTempCursor;
 					bv_->cursor().innerText()->setCursorFromCoordinates(cmd.x, top_y() + cmd.y);
-					bv_->cursor().updatePos();
-					bv_->fitCursor();
+					if (bv_->fitCursor())
+						bv_->update();
 					return true;
 				default:
 					lyxerr << "not dispatched by inner inset val: " << res.val() << endl;
@@ -984,24 +953,26 @@ bool BufferView::Pimpl::workAreaDispatch(FuncRequest const & cmd)
 
 		// otherwise set cursor to surrounding LyXText
 		if (!res.dispatched()) {
-			lyxerr << "cursor is: " << bv_->cursor() << endl;
+			lyxerr << "temp cursor is: " << theTempCursor << endl;
 			lyxerr << "dispatching " << cmd1
 			       << " to surrounding LyXText "
-			       << bv_->cursor().innerText() << endl;
+			       << theTempCursor.innerText() << endl;
 			bv_->cursor() = theTempCursor;
-			theTempCursor.dispatch(cmd1);
-			bv_->update();
-			bv_->cursor().updatePos();
+			res = bv_->cursor().innerText()->dispatch(cmd1);
+			if (bv_->fitCursor() || res.update())
+				bv_->update();
+			
 			//return DispatchResult(true, true);
 		}
 		// see workAreaKeyPress
 		cursor_timeout.restart();
 		screen().showCursor(*bv_);
 
-		// FIXME: we should skip these when selecting
-		owner_->updateLayoutChoice();
-		owner_->updateToolbar();
-//		fitCursor();
+		// skip these when selecting
+		if (cmd.action != LFUN_MOUSE_MOTION) {
+			owner_->updateLayoutChoice();
+			owner_->updateToolbar();
+		}
 
 		// slight hack: this is only called currently when we
 		// clicked somewhere, so we force through the display
@@ -1295,7 +1266,6 @@ bool BufferView::Pimpl::insertInset(InsetOld * inset, string const & lout)
 				   string(),
 				   0);
 	}
-
 	bv_->cursor().innerText()->insertInset(inset);
 	update();
 

src/ChangeLog

@@ -1,3 +1,10 @@
+2003-11-13  Alfredo Braunstein  <abraunst@lyx.org>
+
+	* BufferView_pimpl.C (fitCursor): call screen().fitCursor()
+	* BufferView.C (fitLockedInsetCursor): remove
+	* cursor.[Ch] (getDim): add
+	* text.C (getRowNearY): add faster version
+	* text3.C: remove some update calls
 
 2003-11-12  Martin Vermeer  <martin.vermeer@hut.fi>
 

src/cursor.C

@@ -20,6 +20,7 @@
 #include "lfuns.h"
 #include "lyxtext.h"
 #include "paragraph.h"
+#include "lyxrow.h"
 
 #include "insets/updatableinset.h"
 #include "insets/insettabular.h"
@@ -164,6 +165,19 @@ void LCursor::updatePos()
 }
 
 
+void LCursor::getDim(int & asc, int & desc) const
+{
+	LyXText * txt = innerText();
+	
+	if (txt) {
+		Row const & row = *txt->cursorRow();
+		asc = row.baseline();
+		desc = row.height() - asc;
+	} else
+		innerInset()->getCursorDim(bv_, asc, desc);
+}
+
+
 void LCursor::getPos(int & x, int & y) const
 {
 	if (data_.empty()) {

src/cursor.h

@@ -75,6 +75,8 @@ public:
 	LyXText * innerText() const;
 	/// returns x,y position
 	void getPos(int & x, int & y) const;
+	/// returns cursor dimension
+	void getDim(int & asc, int & desc) const;
 	/// cache the absolute coordinate from the top inset
 	void updatePos();
 	///

src/frontends/ChangeLog

@@ -1,3 +1,10 @@
+2003-11-13  Alfredo Braunstein  <abraunst@lyx.org>
+
+	* screen.[Ch] (fitCursor): use LCursor::getDim, simplify
+	(fitManualCursor): remove
+	(topCursorVisible): remove
+	
+
 2003-11-11  Alfredo Braunstein  <abraunst@libero.it>
 
 	* screen.C (showCursor): use absolute coords form LCursor

src/frontends/screen.C

@@ -204,70 +204,39 @@ void LyXScreen::toggleCursor(BufferView & bv)
 }
 
 
-bool LyXScreen::fitManualCursor(BufferView * bv, LyXText *,
-	int x, int y, int asc, int desc)
+bool LyXScreen::fitCursor(BufferView * bv)
 {
-	lyxerr << "LyXScreen::fitManualCursor x: " << x << " y: " << y << std::endl;
-	int const vheight = workarea().workHeight();
-	int const topy = bv->top_y();
-	int newtop = topy;
-
-	if (y + desc - topy >= vheight)
-		newtop = y - 3 * vheight / 4;  // the scroll region must be so big!!
-	else if (y - asc < topy && topy > 0)
-		newtop = y - vheight / 4;
-
-	newtop = max(newtop, 0); // can newtop ever be < 0? (Lgb)
-
-	if (newtop == topy)
-		return false;
-
-	bv->top_y(newtop);
-	return true;
-}
-
-
-unsigned int LyXScreen::topCursorVisible(LyXText * text)
-{
-	LyXCursor const & cursor = text->cursor;
-	int top_y = text->bv()->top_y();
+	int const top_y = bv->top_y();
+	int const h = workarea().workHeight();
 	int newtop = top_y;
-	unsigned int const vheight = workarea().workHeight();
+	int x, y, asc, desc;
 
-	Row & row = *text->cursorPar()->getRow(cursor.pos());
+	bv->cursor().getPos(x, y);
+	bv->cursor().getDim(asc, desc);
+	
+	bool const big_row = h / 4 < asc + desc && asc + desc < h;
 
-	if (int(cursor.y() - row.baseline() + row.height() - top_y) >= vheight) {
-		if (row.height() < vheight
-		    && row.height() > vheight / 4) {
-			newtop = cursor.y()
-				+ row.height()
-				- row.baseline() - vheight;
-		} else {
-			// scroll down, the scroll region must be so big!!
-			newtop = cursor.y() - vheight / 2;
-		}
+	if (y + desc - top_y >= h) {
+		if (big_row)
+			newtop = y + desc - h;
+		else
+			newtop = y - h / 2;
 
-	} else if (int(cursor.y() - row.baseline()) < top_y && top_y > 0) {
-		if (row.height() < vheight && row.height() > vheight / 4) {
-			newtop = cursor.y() - row.baseline();
-		} else {
-			// scroll up
-			newtop = cursor.y() - vheight / 2;
+	} else if (top_y > max(y - asc, 0)) {
+		if (big_row)
+			newtop = y - asc;
+		else {
+			newtop = y - h / 2;
 			newtop = min(newtop, top_y);
 		}
 	}
 
-	return max(newtop, 0);
-}
+	newtop = max(newtop, 0);
+	if (newtop == top_y)
+		return false;
 
-
-bool LyXScreen::fitCursor(LyXText * text, BufferView * bv)
-{
-	// Is a change necessary?
-	int const newtop = topCursorVisible(text);
-	bool const result = (newtop != bv->top_y());
 	bv->top_y(newtop);
-	return result;
+	return true;
 }
 
 

src/frontends/screen.h

@@ -36,42 +36,17 @@ public:
 
 	virtual ~LyXScreen();
 
-	/**
-	 * fit the cursor onto the visible work area, scrolling if necessary
-	 * @param bv the buffer view
-	 * @param vheight the height of the visible region
-	 * @param base_y the top of the lyxtext to look at
-	 * @param x the new x position
-	 * @param y the new y position
-	 * @param a ascent of the cursor's row
-	 * @param d descent of the cursor's row
-	 * @return true if the work area needs scrolling as a result
-	 */
-	bool fitManualCursor(BufferView * bv, LyXText * text,
-		int x, int y, int a, int d);
-
 	/// redraw the screen, without using existing pixmap
 	virtual void redraw(BufferView & bv);
 
-	/**
-	 * topCursorVisible - get a new "top" to make the cursor visible
-	 * in a LyXText
-	 *
-	 * This helper function calculates a new y co-ordinate for
-	 * the top of the containing region such that the cursor contained
-	 * within the LyXText is "nicely" visible.
-	 */
-	virtual unsigned int topCursorVisible(LyXText *);
-
 	/**
 	 * fitCursor - fit the cursor onto the work area
-	 * @param text the text containing the cursor
 	 * @param bv the bufferview
 	 * @return true if a change was necessary
 	 *
 	 * Scrolls the screen so that the cursor is visible
 	 */
-	virtual bool fitCursor(LyXText *, BufferView *);
+	virtual bool fitCursor(BufferView *);
 
 	/// hide the visible cursor, if it is visible
 	void hideCursor();

src/insets/ChangeLog

@@ -1,3 +1,11 @@
+2003-11-13  Alfredo Braunstein  <abraunst@lyx.org>
+
+	* insetcollapsable.[Ch] (fitInsetCursor): remove
+	* insettabular.[Ch] (fitInsetCursor): remove
+	* insettext.[Ch] (fitInsetCursor): remove
+	* updatableinset.[Ch] (fitInsetCursor): remove
+	(getCursorDIm): add virtual
+
 2003-11-12  Martin Vermeer  <martin.vermeer@hut.fi>
 
 	* src/insets/Makefile.am:

src/insets/insetcollapsable.C

@@ -433,12 +433,6 @@ bool InsetCollapsable::insetAllowed(InsetOld::Code code) const
 }
 
 
-void InsetCollapsable::fitInsetCursor(BufferView * bv) const
-{
-	inset.fitInsetCursor(bv);
-}
-
-
 void InsetCollapsable::setLabelFont(LyXFont & f)
 {
 	labelfont_ = f;

src/insets/insetcollapsable.h

@@ -79,8 +79,6 @@ public:
 	/// get the screen x,y of the cursor
 	void getCursorPos(BufferView *, int & x, int & y) const;
 	///
-	void fitInsetCursor(BufferView * bv) const;
-	///
 	void setFont(BufferView *, LyXFont const &, bool toggleall = false,
 		 bool selectall = false);
 	///

src/insets/insettabular.C

@@ -973,22 +973,6 @@ void InsetTabular::getCursorPos(BufferView *, int & x, int & y) const
 }
 
 
-void InsetTabular::fitInsetCursor(BufferView * bv) const
-{
-	if (the_locking_inset) {
-		the_locking_inset->fitInsetCursor(bv);
-		return;
-	}
-
-	LyXFont font;
-	int const asc = font_metrics::maxAscent(font);
-	int const desc = font_metrics::maxDescent(font);
-	resetPos(bv);
-
-	bv->fitLockedInsetCursor(cursorx_, cursory_, asc, desc);
-}
-
-
 void InsetTabular::setPos(BufferView * bv, int x, int y) const
 {
 	cursory_ = 0;

src/insets/insettabular.h

@@ -196,8 +196,6 @@ private:
 	void drawCellSelection(Painter &, int x, int baseline,
 			       int row, int column, int cell) const;
 	///
-	void fitInsetCursor(BufferView *) const;
-	///
 	void setPos(BufferView *, int x, int y) const;
 	///
 	DispatchResult moveRight(BufferView *, bool lock);

src/insets/insettext.C

@@ -699,15 +699,6 @@ int InsetText::insetInInsetY() const
 }
 
 
-void InsetText::fitInsetCursor(BufferView * bv) const
-{
-	LyXFont const font = text_.getFont(cpar(), cpos());
-	int const asc = font_metrics::maxAscent(font);
-	int const desc = font_metrics::maxDescent(font);
-	bv->fitLockedInsetCursor(cx(), cy(), asc, desc);
-}
-
-
 DispatchResult InsetText::moveRight(BufferView * bv)
 {
 	if (text_.cursorPar()->isRightToLeftPar(bv->buffer()->params()))

src/insets/insettext.h

@@ -93,8 +93,6 @@ public:
 	///
 	int insetInInsetY() const;
 	///
-	void fitInsetCursor(BufferView *) const;
-	///
 	bool insertInset(BufferView *, InsetOld *);
 	///
 	bool insetAllowed(InsetOld::Code) const;

src/insets/updatableinset.C

@@ -23,6 +23,8 @@
 
 #include "support/lstrings.h"
 
+#include <boost/assert.hpp>
+
 
 using lyx::support::strToDbl;
 using lyx::support::strToInt;
@@ -35,10 +37,6 @@ InsetOld::EDITABLE UpdatableInset::editable() const
 }
 
 
-void UpdatableInset::fitInsetCursor(BufferView *) const
-{}
-
-
 void UpdatableInset::scroll(BufferView * bv, float s) const
 {
 	if (!s) {
@@ -107,3 +105,9 @@ UpdatableInset::priv_dispatch(FuncRequest const & cmd, idx_type &, pos_type &)
 		return DispatchResult(false);
 	}
 }
+
+
+void UpdatableInset::getCursorDim(BufferView *, int &, int &) const
+{
+	BOOST_ASSERT(false);
+}

src/insets/updatableinset.h

@@ -29,10 +29,10 @@ public:
 	///
 	virtual EDITABLE editable() const;
 
-	///
-	virtual void fitInsetCursor(BufferView *) const;
-	/// FIXME
+	/// return the cursor pos, relative to the inset pos
 	virtual void getCursorPos(BufferView *, int &, int &) const {}
+	/// return the cursor dim
+	virtual void getCursorDim(BufferView *, int &, int &) const;
 	///
 	virtual bool insertInset(BufferView *, InsetOld *) { return false; }
 	///

src/mathed/ChangeLog

@@ -1,3 +1,6 @@
+2003-11-13  Alfredo Braunstein  <abraunst@lyx.org>
+
+	* formulabase.[Ch] (getCursorDim): add
 
 2003-11-10  André Pönitz  <poenitz@gmx.net>
 

src/mathed/formulabase.C

@@ -186,18 +186,14 @@ void InsetFormulaBase::getCursorPos(BufferView *, int & x, int & y) const
 }
 
 
-void InsetFormulaBase::fitInsetCursor(BufferView * bv) const
+void InsetFormulaBase::getCursorDim(BufferView * bv,
+				    int & asc, int & desc) const
 {
 	if (!mathcursor)
 		return;
-	int x, y, asc, des;
 	asc = 10;
-	des = 2;
+	desc = 2;
 	//math_font_max_dim(font_, asc, des);
-	getCursorPos(bv, x, y);
-	//y += yo_;
-	//lyxerr << "fitInsetCursor: x: " << x << " y: " << y << " yo: " << yo_ << endl;
-	bv->fitLockedInsetCursor(x, y, asc, des);
 }
 
 
@@ -745,7 +741,6 @@ InsetFormulaBase::priv_dispatch(FuncRequest const & cmd,
 		toggleInsetSelection(bv);
 
 	if (result.dispatched()) {
-		fitInsetCursor(bv);
 		revealCodes(bv);
 		cmd.view()->stuffClipboard(mathcursor->grabSelection());
 	} else {

src/mathed/formulabase.h

@@ -45,9 +45,9 @@ public:
 	/// what appears in the minibuffer when opening
 	virtual std::string const editMessage() const;
 	///
-	virtual void fitInsetCursor(BufferView *) const;
-	/// FIXME
 	virtual void getCursorPos(BufferView *, int &, int &) const;
+	///
+	virtual void getCursorDim(BufferView *, int &, int &) const;
 	/// get the absolute document x,y of the cursor
 	virtual void getCursor(BufferView & bv, int & x, int & y) const;
 	///

src/text.C

@@ -1467,18 +1467,20 @@ RowList::iterator
 LyXText::getRowNearY(int y, ParagraphList::iterator & pit) const
 {
 	//lyxerr << "getRowNearY: y " << y << endl;
-#if 0
-	ParagraphList::iterator const pend = ownerParagraphs().end();
+#if 1
+	ParagraphList::iterator const
+		pend = boost::prior(ownerParagraphs().end());
 	pit = ownerParagraphs().begin();
 	while (int(pit->y + pit->height) < y && pit != pend)
 		++pit;
 
-	RowList::iterator rit = pit->rows.begin();
-	RowList::iterator const rend = pit->rows.end();
-	while (int(pit->y + rit->y_offset()) < y && rit != rend)
-		++rit;
+	RowList::iterator rit = pit->rows.end();
+	RowList::iterator const rbegin = pit->rows.begin();
+	do {
+		--rit;
+	} while (rit != rbegin && int(pit->y + rit->y_offset()) > y);
+	
 	return rit;
-
 #else
 	pit = boost::prior(ownerParagraphs().end());
 

src/text3.C

@@ -227,7 +227,7 @@ namespace {
 		if (!lt->selection.set())
 			bv->haveSelection(false);
 
-		bv->update();
+//		bv->update();
 		bv->switchKeyMap();
 	}
 
@@ -495,8 +495,7 @@ void doInsertInset(LyXText * lt, FuncRequest const & cmd,
 				inset->edit(bv, true);
 			if (gotsel && pastesel)
 				bv->owner()->dispatch(FuncRequest(LFUN_PASTE));
-		}
-		else
+		} else
 			delete inset;
 	}
 }
@@ -1290,7 +1289,6 @@ DispatchResult LyXText::dispatch(FuncRequest const & cmd)
 			selection.cursor = cursor;
 			cursorEnd();
 			setSelection();
-			bv->update();
 			bv->haveSelection(selection.set());
 		}
 		break;
@@ -1300,7 +1298,6 @@ DispatchResult LyXText::dispatch(FuncRequest const & cmd)
 			break;
 		if (cmd.button() == mouse_button::button1) {
 			selectWord(lyx::WHOLE_WORD_STRICT);
-			bv->update();
 			bv->haveSelection(selection.set());
 		}
 		break;
@@ -1352,15 +1349,15 @@ DispatchResult LyXText::dispatch(FuncRequest const & cmd)
 			       << bv->text->cursor.y() << endl;
 	#endif
 		// This is to allow jumping over large insets
-		if (cursorrow == bv->text->cursorRow()) {
+		if (cursorrow == cursorRow()) {
 			if (cmd.y >= bv->workHeight())
-				bv->text->cursorDown(false);
+				cursorDown(false);
 			else if (cmd.y < 0)
-				bv->text->cursorUp(false);
+				cursorUp(false);
 		}
 
 		bv->text->setSelection();
-		bv->update();
+//		bv->update();
 		break;
 	}
 
@@ -1428,13 +1425,13 @@ DispatchResult LyXText::dispatch(FuncRequest const & cmd)
 	}
 
 	case LFUN_MOUSE_RELEASE: {
-		// do nothing if we used the mouse wheel
 		if (!bv->buffer())
 			break;
 
+		// do nothing if we used the mouse wheel
 		if (cmd.button() == mouse_button::button4
 		 || cmd.button() == mouse_button::button5)
-			break;
+			return DispatchResult(true, false);
 
 		selection_possible = false;