]> git.lyx.org Git - lyx.git/blobdiff - src/rowpainter.C
Partially extracted from r14281 from the younes branch.
[lyx.git] / src / rowpainter.C
index 91543fa30e2d46ba72df6284420c25433d366116..498d1c982f12a8fd6da67bd8aadf7f4460c036d0 100644 (file)
@@ -34,6 +34,8 @@
 
 #include "frontends/font_metrics.h"
 #include "frontends/nullpainter.h"
+#include "frontends/LyXView.h"
+#include "frontends/WorkArea.h"
 #include "frontends/Painter.h"
 
 #include "insets/insettext.h"
@@ -42,6 +44,9 @@
 
 #include <boost/crc.hpp>
 
+using lyx::frontend::Painter;
+using lyx::frontend::NullPainter;
+using lyx::char_type;
 using lyx::pos_type;
 using lyx::pit_type;
 
@@ -53,6 +58,10 @@ using std::string;
 
 namespace {
 
+/// Flag: do a full redraw of inside text of inset
+/// Working variable indicating a full screen refresh
+bool refreshInside;
+
 /**
  * A class used for painting an individual row of text.
  */
@@ -71,11 +80,11 @@ public:
        void paintText();
 
 private:
-       void paintForeignMark(double orig_x, LyXFont const & font);
+       void paintForeignMark(double orig_x, LyXFont const & font, int desc = 0);
        void paintHebrewComposeChar(lyx::pos_type & vpos, LyXFont const & font);
        void paintArabicComposeChar(lyx::pos_type & vpos, LyXFont const & font);
-       void paintChars(lyx::pos_type & vpos, LyXFont font, 
-                       bool hebrew, bool arabic);
+       void paintChars(lyx::pos_type & vpos, LyXFont font,
+                       bool hebrew, bool arabic);
        int paintAppendixStart(int y);
        void paintFromPos(lyx::pos_type & vpos);
        void paintInset(lyx::pos_type const pos, LyXFont const & font);
@@ -159,13 +168,22 @@ void RowPainter::paintInset(pos_type const pos, LyXFont const & font)
        // FIXME: We should always use font, see documentation of
        // noFontChange() in insetbase.h.
        pi.base.font = inset->noFontChange() ?
-               bv_.buffer()->params().getLyXTextClass().defaultfont() :
+               bv_.buffer()->params().getFont() :
                font;
        pi.ltr_pos = (text_.bidi.level(pos) % 2 == 0);
        pi.erased_ = erased_ || isDeletedText(par_, pos);
        theCoords.insets().add(inset, int(x_), yo_);
-       inset->drawSelection(pi, int(x_), yo_);
+       InsetText const * const in = inset->asTextInset();
+       // non-wide insets are painted completely. Recursive
+       bool tmp = refreshInside;
+       if (!in || !in->Wide()) {
+               refreshInside = true;
+               lyxerr[Debug::PAINTING] << endl << "Paint inset fully" << endl;
+       }
+       if (refreshInside)
+               inset->drawSelection(pi, int(x_), yo_);
        inset->draw(pi, int(x_), yo_);
+       refreshInside = tmp;
        x_ += inset->width();
 }
 
@@ -177,7 +195,7 @@ void RowPainter::paintHebrewComposeChar(pos_type & vpos, LyXFont const & font)
        string str;
 
        // first char
-       char c = par_.getChar(pos);
+       char_type c = par_.getChar(pos);
        str += c;
        ++vpos;
 
@@ -186,8 +204,8 @@ void RowPainter::paintHebrewComposeChar(pos_type & vpos, LyXFont const & font)
 
        for (pos_type i = pos - 1; i >= 0; --i) {
                c = par_.getChar(i);
-               if (!Encodings::IsComposeChar_hebrew(c)) {
-                       if (IsPrintableNonspace(c)) {
+               if (!Encodings::isComposeChar_hebrew(c)) {
+                       if (isPrintableNonspace(c)) {
                                int const width2 =
                                        text_.singleWidth(par_, i, c, text_.getFont(par_, i));
                                // dalet / resh
@@ -210,7 +228,7 @@ void RowPainter::paintArabicComposeChar(pos_type & vpos, LyXFont const & font)
        string str;
 
        // first char
-       char c = par_.getChar(pos);
+       char_type c = par_.getChar(pos);
        c = par_.transformChar(c, pos);
        str += c;
        ++vpos;
@@ -220,9 +238,9 @@ void RowPainter::paintArabicComposeChar(pos_type & vpos, LyXFont const & font)
 
        for (pos_type i = pos - 1; i >= 0; --i) {
                c = par_.getChar(i);
-               if (!Encodings::IsComposeChar_arabic(c)) {
-                       if (IsPrintableNonspace(c)) {
-                               int const width2 = 
+               if (!Encodings::isComposeChar_arabic(c)) {
+                       if (isPrintableNonspace(c)) {
+                               int const width2 =
                                        text_.singleWidth(par_, i, c, text_.getFont(par_, i));
                                dx = (width2 - width) / 2;
                        }
@@ -234,13 +252,13 @@ void RowPainter::paintArabicComposeChar(pos_type & vpos, LyXFont const & font)
 }
 
 
-void RowPainter::paintChars(pos_type & vpos, LyXFont font, 
+void RowPainter::paintChars(pos_type & vpos, LyXFont font,
                            bool hebrew, bool arabic)
 {
        pos_type pos = text_.bidi.vis2log(vpos);
        pos_type const end = row_.endpos();
        FontSpan const font_span = par_.fontSpan(pos);
-       Change::Type const prev_change = par_.lookupChange(pos);
+       Change::Type const prev_change = par_.lookupChange(pos).type;
 
        // first character
        string str;
@@ -259,15 +277,15 @@ void RowPainter::paintChars(pos_type & vpos, LyXFont font,
                if (prev_change != par_.lookupChange(pos))
                        break;
 
-               char c = par_.getChar(pos);
+               char_type c = par_.getChar(pos);
 
-               if (!IsPrintableNonspace(c))
+               if (!isPrintableNonspace(c))
                        break;
 
-               if (arabic && Encodings::IsComposeChar_arabic(c))
+               if (arabic && Encodings::isComposeChar_arabic(c))
                        break;
 
-               if (hebrew && Encodings::IsComposeChar_hebrew(c))
+               if (hebrew && Encodings::isComposeChar_hebrew(c))
                        break;
 
                if (arabic)
@@ -288,7 +306,7 @@ void RowPainter::paintChars(pos_type & vpos, LyXFont font,
 }
 
 
-void RowPainter::paintForeignMark(double orig_x, LyXFont const & font)
+void RowPainter::paintForeignMark(double orig_x, LyXFont const & font, int desc)
 {
        if (!lyxrc.mark_foreign_language)
                return;
@@ -297,7 +315,7 @@ void RowPainter::paintForeignMark(double orig_x, LyXFont const & font)
        if (font.language() == bv_.buffer()->params().language)
                return;
 
-       int const y = yo_ + 1;
+       int const y = yo_ + 1 + desc;
        pain_.line(int(orig_x), y, int(x_), y, LColor::language);
 }
 
@@ -306,19 +324,19 @@ void RowPainter::paintFromPos(pos_type & vpos)
 {
        pos_type const pos = text_.bidi.vis2log(vpos);
        LyXFont orig_font = text_.getFont(par_, pos);
-       text_.applyOuterFont(orig_font);
 
        double const orig_x = x_;
 
        if (par_.isInset(pos)) {
                paintInset(pos, orig_font);
                ++vpos;
-               paintForeignMark(orig_x, orig_font);
+               paintForeignMark(orig_x, orig_font,
+                       par_.getInset(pos)->descent());
                return;
        }
 
        // usual characters, no insets
-       char const c = par_.getChar(pos);
+       char_type const c = par_.getChar(pos);
 
        // special case languages
        std::string const & lang = orig_font.language()->lang();
@@ -329,8 +347,8 @@ void RowPainter::paintFromPos(pos_type & vpos)
 
        // draw as many chars as we can
        if ((!hebrew && !arabic)
-               || (hebrew && !Encodings::IsComposeChar_hebrew(c))
-               || (arabic && !Encodings::IsComposeChar_arabic(c))) {
+               || (hebrew && !Encodings::isComposeChar_hebrew(c))
+               || (arabic && !Encodings::isComposeChar_arabic(c))) {
                paintChars(vpos, orig_font, hebrew, arabic);
        } else if (hebrew) {
                paintHebrewComposeChar(vpos, orig_font);
@@ -347,7 +365,7 @@ void RowPainter::paintChangeBar()
        pos_type const start = row_.pos();
        pos_type const end = row_.endpos();
 
-       if (start == end || !par_.isChanged(start, end - 1))
+       if (start == end || !par_.isChanged(start, end))
                return;
 
        int const height = text_.isLastRow(pit_, row_)
@@ -612,7 +630,7 @@ void RowPainter::paintText()
        bool is_struckout = false;
        int last_strikeout_x = 0;
 
-       // Use font span to speed things up, see below 
+       // Use font span to speed things up, see below
        FontSpan font_span;
        LyXFont font;
 
@@ -657,7 +675,8 @@ void RowPainter::paintText()
                if (running_strikeout && (highly_editable_inset || !is_struckout)) {
                        // Calculate 1/3 height of the buffer's default font
                        int const middle =
-                               yo_ - font_metrics::maxAscent(text_.defaultfont_) / 3;
+                               yo_ -
+                               font_metrics::maxAscent(bv_.buffer()->params().getFont()) / 3;
                        pain_.line(last_strikeout_x, middle, int(x_), middle,
                                LColor::strikeout, Painter::line_solid, Painter::line_thin);
                        running_strikeout = false;
@@ -710,7 +729,8 @@ void RowPainter::paintText()
        if (running_strikeout) {
                // calculate 1/3 height of the buffer's default font
                int const middle =
-                       yo_ - font_metrics::maxAscent(text_.defaultfont_) / 3;
+                       yo_ -
+                       font_metrics::maxAscent(bv_.buffer()->params().getFont()) / 3;
                pain_.line(last_strikeout_x, middle, int(x_), middle,
                        LColor::strikeout, Painter::line_solid, Painter::line_thin);
                running_strikeout = false;
@@ -718,27 +738,51 @@ void RowPainter::paintText()
 }
 
 
-lyx::size_type calculateRowSignature(Row const & row, Paragraph const & par)
+lyx::size_type calculateRowSignature(Row const & row, Paragraph const & par,
+       int x, int y)
 {
        boost::crc_32_type crc;
        for (lyx::pos_type i = row.pos(); i < row.endpos(); ++i) {
                const unsigned char b[] = { par.getChar(i) };
                crc.process_bytes(b, 1);
        }
+       const unsigned char b[] = { x, y, row.width() };
+       crc.process_bytes(b, 3);
        return crc.checksum();
 }
 
 
-bool isCursorInInsetInRow(PainterInfo & pi, RowList::const_iterator rit, 
-               Paragraph const & par)
+bool CursorOnRow(PainterInfo & pi, pit_type const pit,
+       RowList::const_iterator rit, LyXText const & text)
 {
-       InsetList::const_iterator ii = par.insetlist.begin();
-       InsetList::const_iterator iend = par.insetlist.end();
-       for ( ; ii != iend; ++ii) {
-               if (ii->pos >= rit->pos() && ii->pos < rit->endpos()
-                   && ii->inset->isTextInset() 
-                   && pi.base.bv->cursor().isInside(ii->inset))
-                       return true;
+       // Is there a cursor on this row (or inside inset on row)
+       LCursor & cur = pi.base.bv->cursor();
+       for (lyx::size_type d = 0; d < cur.depth(); d++) {
+               CursorSlice const & sl = cur[d];
+               if (sl.text() == &text
+                   && sl.pit() == pit
+                   && sl.pos() >= rit->pos()
+                   && sl.pos() <= rit->endpos())
+                       return true;
+       }
+       return false;
+}
+
+
+bool innerCursorOnRow(PainterInfo & pi, pit_type pit,
+       RowList::const_iterator rit, LyXText const & text)
+{
+       // Is there a cursor inside an inset on this row, and is this inset
+       // the only "character" on this row
+       LCursor & cur = pi.base.bv->cursor();
+       if (rit->pos() + 1 != rit->endpos())
+               return false;
+       for (lyx::size_type d = 0; d < cur.depth(); d++) {
+               CursorSlice const & sl = cur[d];
+               if (sl.text() == &text
+                   && sl.pit() == pit
+                   && sl.pos() == rit->pos())
+                       return d < cur.depth() - 1;
        }
        return false;
 }
@@ -763,36 +807,59 @@ void paintPar
        lyx::size_type rowno(0);
        for (RowList::const_iterator rit = rb; rit != re; ++rit, ++rowno) {
                y += rit->ascent();
+               // Allow setting of refreshInside for nested insets in
+               // this row only
+               bool tmp = refreshInside;
 
                // Row signature; has row changed since last paint?
-               lyx::size_type const row_sig = calculateRowSignature(*rit, par);
-
-               // The following code figures out if the cursor is inside
-               // an inset _on this row_.
-               bool cur_in_inset_in_row = isCursorInInsetInRow(pi, rit, par);
+               lyx::size_type const row_sig = calculateRowSignature(*rit, par, x, y);
+               bool row_has_changed = par.rowSignature()[rowno] != row_sig;
+
+               bool cursor_on_row = CursorOnRow(pi, pit, rit, text);
+               bool in_inset_alone_on_row = innerCursorOnRow(pi, pit, rit,
+                       text);
+
+               // If this is the only object on the row, we can make it wide
+               for (pos_type i = rit->pos() ; i != rit->endpos(); ++i) {
+                       InsetBase const * const in = par.getInset(i);
+                       if (in) {
+                               InsetText const * const t = in->asTextInset();
+                               if (t)
+                                       t->Wide() = in_inset_alone_on_row;
+                       }
+               }
 
-               // If selection is on, the current row signature differs from
-               // from cache, or cursor is inside an inset _on this row_, 
+               // If selection is on, the current row signature differs
+               // from cache, or cursor is inside an inset _on this row_,
                // then paint the row
-               if (repaintAll || par.rowSignature()[rowno] != row_sig 
-                          || cur_in_inset_in_row) {
+               if (repaintAll || row_has_changed || cursor_on_row) {
                        // Add to row signature cache
                        par.rowSignature()[rowno] = row_sig;
 
                        bool const inside = (y + rit->descent() >= 0
                                       && y - rit->ascent() < ww);
                        RowPainter rp(inside ? pi : nullpi, text, pit, *rit, x, y);
-                       // Clear background of this row 
+                       // Clear background of this row
                        // (if paragraph background was not cleared)
-                       if (!repaintAll) {
-                               pi.pain.fillRectangle(x, y - rit->ascent(), 
-                                   pi.base.bv->workWidth(), rit->height(),
+                       if (!repaintAll &&
+                           (!in_inset_alone_on_row || row_has_changed)) {
+                               pi.pain.fillRectangle(x, y - rit->ascent(),
+                                   text.maxwidth_, rit->height(),
                                    text.backgroundColor());
+                               // If outer row has changed, force nested
+                               // insets to repaint completely
+                               if (row_has_changed)
+                                       refreshInside = true;
                        }
-                       
+
                        // Instrumentation for testing row cache (see also
                        // 12 lines lower):
-                       //lyxerr << "#";
+                       if (text.isMainText())
+                               lyxerr[Debug::PAINTING] << "#";
+                       else
+                               lyxerr[Debug::PAINTING] << "[" <<
+                                   repaintAll << row_has_changed <<
+                                   cursor_on_row << "]";
                        rp.paintAppendix();
                        rp.paintDepthBar();
                        rp.paintChangeBar();
@@ -803,8 +870,10 @@ void paintPar
                        rp.paintText();
                }
                y += rit->descent();
+               // Restore, see above
+               refreshInside = tmp;
        }
-       //lyxerr << "." << endl;
+       lyxerr[Debug::PAINTING] << "." << endl;
 }
 
 } // namespace anon
@@ -812,13 +881,16 @@ void paintPar
 
 void paintText(BufferView const & bv, ViewMetricsInfo const & vi)
 {
-       Painter & pain = bv.painter();
+       Painter & pain = bv.owner()->workArea()->getPainter();
        LyXText * const text = bv.text();
        bool const select = bv.cursor().selection();
 
        PainterInfo pi(const_cast<BufferView *>(&bv), pain);
-       if (select || !vi.singlepar) {
-               // Clear background (Delegated to rows if no selection)
+       // Should the whole screen, including insets, be refreshed?
+       bool repaintAll = select || !vi.singlepar;
+
+       if (repaintAll) {
+               // Clear background (if not delegated to rows)
                pain.fillRectangle(0, vi.y1, bv.workWidth(), vi.y2 - vi.y1,
                        text->backgroundColor());
        }
@@ -829,9 +901,10 @@ void paintText(BufferView const & bv, ViewMetricsInfo const & vi)
        int yy = vi.y1;
        // draw contents
        for (pit_type pit = vi.p1; pit <= vi.p2; ++pit) {
+               refreshInside = repaintAll;
                Paragraph const & par = text->getPar(pit);
                yy += par.ascent();
-               paintPar(pi, *bv.text(), pit, 0, yy, select || !vi.singlepar);
+               paintPar(pi, *bv.text(), pit, 0, yy, repaintAll);
                yy += par.descent();
        }
 
@@ -841,13 +914,13 @@ void paintText(BufferView const & bv, ViewMetricsInfo const & vi)
 
        if (vi.p1 > 0) {
                text->redoParagraph(vi.p1 - 1);
-               theCoords.parPos()[bv.text()][vi.p1 - 1] = 
+               theCoords.parPos()[bv.text()][vi.p1 - 1] =
                        Point(0, vi.y1 - text->getPar(vi.p1 - 1).descent());
        }
 
        if (vi.p2 < lyx::pit_type(text->paragraphs().size()) - 1) {
                text->redoParagraph(vi.p2 + 1);
-               theCoords.parPos()[bv.text()][vi.p2 + 1] = 
+               theCoords.parPos()[bv.text()][vi.p2 + 1] =
                        Point(0, vi.y2 + text->getPar(vi.p2 + 1).ascent());
        }
 
@@ -868,9 +941,11 @@ void paintTextInset(LyXText const & text, PainterInfo & pi, int x, int y)
 //     lyxerr << "  paintTextInset: y: " << y << endl;
 
        y -= text.getPar(0).ascent();
+       // This flag can not be set from within same inset:
+       bool repaintAll = refreshInside;
        for (int pit = 0; pit < int(text.paragraphs().size()); ++pit) {
                y += text.getPar(pit).ascent();
-               paintPar(pi, text, pit, x, y, true);
+               paintPar(pi, text, pit, x, y, repaintAll);
                y += text.getPar(pit).descent();
        }
 }