katerenderer.cpp
/* This file is part of the KDE libraries
Copyright (C) 2003 Hamish Rodda <rodda@kde.org>
Copyright (C) 2001 Christoph Cullmann <cullmann@kde.org>
Copyright (C) 2001 Joseph Wenninger <jowenn@kde.org>
Copyright (C) 1999 Jochen Wilhelmy <digisnap@cs.tu-berlin.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "katerenderer.h"
#include "katelinerange.h"
#include "katedocument.h"
#include "katearbitraryhighlight.h"
#include "kateconfig.h"
#include "katehighlight.h"
#include "katefactory.h"
#include "kateview.h"
#include <kdebug.h>
#include <qpainter.h>
#include <qpopupmenu.h>
KateRenderer::KateRenderer(KateDocument* doc, KateView *view)
: m_doc(doc), m_view (view), m_caretStyle(KateRenderer::Insert)
, m_drawCaret(true)
, m_showSelections(true)
, m_showTabs(true)
, m_printerFriendly(false)
{
KateFactory::self()->registerRenderer ( this );
m_config = new KateRendererConfig (this);
m_tabWidth = m_doc->config()->tabWidth();
m_indentWidth = m_tabWidth;
if (m_doc->config()->configFlags() & KateDocumentConfig::cfSpaceIndent)
{
m_indentWidth = m_doc->config()->indentationWidth();
}
updateAttributes ();
}
KateRenderer::~KateRenderer()
{
delete m_config;
KateFactory::self()->deregisterRenderer ( this );
}
void KateRenderer::updateAttributes ()
{
m_schema = config()->schema ();
m_attributes = m_doc->highlight()->attributes (m_schema);
}
KateAttribute* KateRenderer::attribute(uint pos)
{
if (pos < m_attributes->size())
return &m_attributes->at(pos);
return &m_attributes->at(0);
}
void KateRenderer::setDrawCaret(bool drawCaret)
{
m_drawCaret = drawCaret;
}
void KateRenderer::setCaretStyle(KateRenderer::caretStyles style)
{
m_caretStyle = style;
}
void KateRenderer::setShowTabs(bool showTabs)
{
m_showTabs = showTabs;
}
void KateRenderer::setTabWidth(int tabWidth)
{
m_tabWidth = tabWidth;
}
bool KateRenderer::showIndentLines() const
{
return m_config->showIndentationLines();
}
void KateRenderer::setShowIndentLines(bool showIndentLines)
{
m_config->setShowIndentationLines(showIndentLines);
}
void KateRenderer::setIndentWidth(int indentWidth)
{
m_indentWidth = m_tabWidth;
if (m_doc->config()->configFlags() & KateDocumentConfig::cfSpaceIndent)
{
m_indentWidth = indentWidth;
}
}
void KateRenderer::setShowSelections(bool showSelections)
{
m_showSelections = showSelections;
}
void KateRenderer::increaseFontSizes()
{
QFont f ( *config()->font () );
f.setPointSize (f.pointSize ()+1);
config()->setFont (f);
}
void KateRenderer::decreaseFontSizes()
{
QFont f ( *config()->font () );
if ((f.pointSize ()-1) > 0)
f.setPointSize (f.pointSize ()-1);
config()->setFont (f);
}
bool KateRenderer::isPrinterFriendly() const
{
return m_printerFriendly;
}
void KateRenderer::setPrinterFriendly(bool printerFriendly)
{
m_printerFriendly = printerFriendly;
setShowTabs(false);
setShowSelections(false);
setDrawCaret(false);
}
bool KateRenderer::paintTextLineBackground(QPainter& paint, int line, bool isCurrentLine, int xStart, int xEnd)
{
if (isPrinterFriendly())
return false;
// font data
KateFontStruct *fs = config()->fontStruct();
// Normal background color
QColor backgroundColor( config()->backgroundColor() );
bool selectionPainted = false;
if (showSelections() && m_view->lineSelected(line))
{
backgroundColor = config()->selectionColor();
selectionPainted = true;
}
else
{
// paint the current line background if we're on the current line
if (isCurrentLine)
backgroundColor = config()->highlightedLineColor();
// Check for mark background
int markRed = 0, markGreen = 0, markBlue = 0, markCount = 0;
// Retrieve marks for this line
uint mrk = m_doc->mark( line );
if (mrk)
{
for (uint bit = 0; bit < 32; bit++)
{
KTextEditor::MarkInterface::MarkTypes markType = (KTextEditor::MarkInterface::MarkTypes)(1<<bit);
if (mrk & markType)
{
QColor markColor = config()->lineMarkerColor(markType);
if (markColor.isValid()) {
markCount++;
markRed += markColor.red();
markGreen += markColor.green();
markBlue += markColor.blue();
}
}
} // for
} // Marks
if (markCount) {
markRed /= markCount;
markGreen /= markCount;
markBlue /= markCount;
backgroundColor.setRgb(
int((backgroundColor.red() * 0.9) + (markRed * 0.1)),
int((backgroundColor.green() * 0.9) + (markGreen * 0.1)),
int((backgroundColor.blue() * 0.9) + (markBlue * 0.1))
);
}
} // background preprocessing
// Draw line background
paint.fillRect(0, 0, xEnd - xStart, fs->fontHeight, backgroundColor);
return selectionPainted;
}
void KateRenderer::paintWhitespaceMarker(QPainter &paint, uint x, uint y)
{
QPen penBackup( paint.pen() );
paint.setPen( config()->tabMarkerColor() );
paint.drawPoint(x, y);
paint.drawPoint(x + 1, y);
paint.drawPoint(x, y - 1);
paint.setPen( penBackup );
}
void KateRenderer::paintIndentMarker(QPainter &paint, uint x, uint row)
{
QPen penBackup( paint.pen() );
paint.setPen( config()->tabMarkerColor() );
const int top = paint.window().top();
const int bottom = paint.window().bottom();
const int h = bottom - top + 1;
// Dot padding.
int pad = 0;
if(row & 1 && h & 1) pad = 1;
for(int i = top; i <= bottom; i++)
{
if((i + pad) & 1)
{
paint.drawPoint(x + 2, i);
}
}
paint.setPen( penBackup );
}
void KateRenderer::paintTextLine(QPainter& paint, const KateLineRange* range, int xStart, int xEnd, const KateTextCursor* cursor, const KateBracketRange* bracketmark)
{
int line = range->line;
// textline
KateTextLine::Ptr textLine = m_doc->kateTextLine(line);
if (!textLine)
return;
bool showCursor = drawCaret() && cursor && range->includesCursor(*cursor);
KateSuperRangeList& superRanges = m_doc->arbitraryHL()->rangesIncluding(range->line, 0);
int minIndent = 0;
// A bit too verbose for my tastes
// Re-write a bracketmark class? put into its own function? add more helper constructors to the range stuff?
// Also, need a light-weight arbitraryhighlightrange class for static stuff
KateArbitraryHighlightRange* bracketStartRange (0L);
KateArbitraryHighlightRange* bracketEndRange (0L);
if (bracketmark && bracketmark->isValid()) {
if (range->includesCursor(bracketmark->start())) {
KateTextCursor startend = bracketmark->start();
startend.setCol(startend.col()+1);
bracketStartRange = new KateArbitraryHighlightRange(m_doc, bracketmark->start(), startend);
bracketStartRange->setBGColor(config()->highlightedBracketColor());
bracketStartRange->setBold(true);
superRanges.append(bracketStartRange);
}
if (range->includesCursor(bracketmark->end())) {
KateTextCursor endend = bracketmark->end();
endend.setCol(endend.col()+1);
bracketEndRange = new KateArbitraryHighlightRange(m_doc, bracketmark->end(), endend);
bracketEndRange->setBGColor(config()->highlightedBracketColor());
bracketEndRange->setBold(true);
superRanges.append(bracketEndRange);
}
Q_ASSERT(bracketmark->start().line() <= bracketmark->end().line());
if (bracketmark->start().line() < line && bracketmark->end().line() >= line)
{
minIndent = bracketmark->getMinIndent();
}
}
// length, chars + raw attribs
uint len = textLine->length();
uint oldLen = len;
// should the cursor be painted (if it is in the current xstart - xend range)
bool cursorVisible = false;
int cursorMaxWidth = 0;
// font data
KateFontStruct * fs = config()->fontStruct();
// Paint selection background as the whole line is selected
// selection startcol/endcol calc
bool hasSel = false;
uint startSel = 0;
uint endSel = 0;
// was the selection background already completely painted ?
bool selectionPainted = false;
bool isCurrentLine = (cursor && range->includesCursor(*cursor));
selectionPainted = paintTextLineBackground(paint, line, isCurrentLine, xStart, xEnd);
if (selectionPainted)
{
hasSel = true;
startSel = 0;
endSel = len + 1;
}
int startcol = range->startCol;
if (startcol > (int)len)
startcol = len;
if (startcol < 0)
startcol = 0;
int endcol = range->wrap ? range->endCol : -1;
if (endcol < 0)
len = len - startcol;
else
len = endcol - startcol;
// text attribs font/style data
KateAttribute* attr = m_doc->highlight()->attributes(m_schema)->data();
const QColor *cursorColor = &attr[0].textColor();
// Start arbitrary highlighting
KateTextCursor currentPos(line, startcol);
superRanges.firstBoundary(&currentPos);
if (showSelections() && !selectionPainted)
hasSel = getSelectionBounds(line, oldLen, startSel, endSel);
// Draws the dashed underline at the start of a folded block of text.
if (range->startsInvisibleBlock) {
paint.setPen(QPen(config()->wordWrapMarkerColor(), 1, Qt::DashLine));
paint.drawLine(0, fs->fontHeight - 1, xEnd - xStart, fs->fontHeight - 1);
}
// draw word-wrap-honor-indent filling
if (range->xOffset() && range->xOffset() > xStart)
{
paint.fillRect(0, 0, range->xOffset() - xStart, fs->fontHeight,
QBrush(config()->wordWrapMarkerColor(), QBrush::DiagCrossPattern));
}
// painting loop
uint xPos = range->xOffset();
int cursorXPos = 0;
// Optimisation to quickly draw an empty line of text
if (len < 1)
{
if (showCursor && (cursor->col() >= int(startcol)))
{
cursorVisible = true;
cursorXPos = xPos + cursor->col() * fs->myFontMetrics.width(QChar(' '));
}
}
else
{
bool isIMSel = false;
bool isIMEdit = false;
bool isSel = false;
KateAttribute customHL;
const QColor *curColor = 0;
const QColor *oldColor = 0;
KateAttribute* oldAt = &attr[0];
uint oldXPos = xPos;
uint xPosAfter = xPos;
KateAttribute currentHL;
uint blockStartCol = startcol;
uint curCol = startcol;
uint nextCol = curCol + 1;
// text + attrib data from line
const uchar *textAttributes = textLine->attributes ();
bool noAttribs = !textAttributes;
// adjust to startcol ;)
textAttributes = textAttributes + startcol;
uint atLen = m_doc->highlight()->attributes(m_schema)->size();
// Determine if we have trailing whitespace and store the column
// if lastChar == -1, set to 0, if lastChar exists, increase by one
uint trailingWhitespaceColumn = textLine->lastChar() + 1;
const uint lastIndentColumn = textLine->firstChar();
// Could be precomputed.
const uint spaceWidth = fs->width (QChar(' '), false, false, m_tabWidth);
// Get current x position.
int curPos = textLine->cursorX(curCol, m_tabWidth);
while (curCol - startcol < len)
{
// make sure curPos is updated correctly.
// ### if uncommented, causes an O(n^2) behaviour
//Q_ASSERT(curPos == textLine->cursorX(curCol, m_tabWidth));
QChar curChar = textLine->string()[curCol];
// Decide if this character is a tab - we treat the spacing differently
// TODO: move tab width calculation elsewhere?
bool isTab = curChar == QChar('\t');
// Determine current syntax highlighting attribute
// A bit legacy but doesn't need to change
KateAttribute* curAt = (noAttribs || ((*textAttributes) >= atLen)) ? &attr[0] : &attr[*textAttributes];
// X position calculation. Incorrect for fonts with non-zero leftBearing() and rightBearing() results.
// TODO: make internal charWidth() function, use QFontMetrics::charWidth().
xPosAfter += curAt->width(*fs, curChar, m_tabWidth);
// Tab special treatment, move to charWidth().
if (isTab)
xPosAfter -= (xPosAfter % curAt->width(*fs, curChar, m_tabWidth));
// Only draw after the starting X value
// Haha, this was always wrong, due to the use of individual char width calculations...?? :(
if ((int)xPosAfter >= xStart)
{
// Determine if we're in a selection and should be drawing it
isSel = (showSelections() && hasSel && (curCol >= startSel) && (curCol < endSel));
// input method edit area
isIMEdit = m_view && m_view->isIMEdit( line, curCol );
// input method selection
isIMSel = m_view && m_view->isIMSelection( line, curCol );
// Determine current color, taking into account selection
curColor = isSel ? &(curAt->selectedTextColor()) : &(curAt->textColor());
// Incorporate in arbitrary highlighting
if (curAt != oldAt || curColor != oldColor || (superRanges.count() && superRanges.currentBoundary() && *(superRanges.currentBoundary()) == currentPos)) {
if (superRanges.count() && superRanges.currentBoundary() && *(superRanges.currentBoundary()) == currentPos)
customHL = KateArbitraryHighlightRange::merge(superRanges.rangesIncluding(currentPos));
KateAttribute hl = customHL;
hl += *curAt;
// use default highlighting color if we haven't defined one above.
if (!hl.itemSet(KateAttribute::TextColor))
hl.setTextColor(*curColor);
if (!isSel)
paint.setPen(hl.textColor());
else
paint.setPen(hl.selectedTextColor());
paint.setFont(hl.font(*currentFont()));
if (superRanges.currentBoundary() && *(superRanges.currentBoundary()) == currentPos)
superRanges.nextBoundary();
currentHL = hl;
}
// Determine whether we can delay painting to draw a block of similarly formatted
// characters or not
// Reasons for NOT delaying the drawing until the next character
// You have to detect the change one character in advance.
// TODO: KateAttribute::canBatchRender()
bool renderNow = false;
if ((isTab)
// formatting has changed OR
|| (superRanges.count() && superRanges.currentBoundary() && *(superRanges.currentBoundary()) == KateTextCursor(line, nextCol))
// it is the end of the line OR
|| (curCol - startcol >= len - 1)
// the rest of the line is trailing whitespace OR
|| (curCol + 1 >= trailingWhitespaceColumn)
// indentation lines OR
|| (showIndentLines() && curCol < lastIndentColumn)
// the x position is past the end OR
|| ((int)xPos > xEnd)
// it is a different attribute OR
|| (!noAttribs && curAt != &attr[*(textAttributes+1)])
// the selection boundary was crossed OR
|| (isSel != (hasSel && (nextCol >= startSel) && (nextCol < endSel)))
// the next char is a tab (removed the "and this isn't" because that's dealt with above)
// i.e. we have to draw the current text so the tab can be rendered as above.
|| (textLine->string()[nextCol] == QChar('\t'))
// input method edit area
|| ( m_view && (isIMEdit != m_view->isIMEdit( line, nextCol )) )
// input method selection
|| ( m_view && (isIMSel != m_view->isIMSelection( line, nextCol )) )
)
{
renderNow = true;
}
if (renderNow)
{
if (!isPrinterFriendly())
{
bool paintBackground = true;
uint width = xPosAfter - oldXPos;
QColor fillColor;
if (isIMSel && !isTab)
{
// input method selection
fillColor = m_view->colorGroup().color(QColorGroup::Foreground);
}
else if (isIMEdit && !isTab)
{
// XIM support
// input method edit area
const QColorGroup& cg = m_view->colorGroup();
int h1, s1, v1, h2, s2, v2;
cg.color( QColorGroup::Base ).hsv( &h1, &s1, &v1 );
cg.color( QColorGroup::Background ).hsv( &h2, &s2, &v2 );
fillColor.setHsv( h1, s1, ( v1 + v2 ) / 2 );
}
else if (!selectionPainted && (isSel || currentHL.itemSet(KateAttribute::BGColor)))
{
if (isSel)
{
fillColor = config()->selectionColor();
// If this is the last block of text, fill up to the end of the line if the
// selection stretches that far
if ((curCol >= len - 1) && m_view->lineEndSelected (line, endcol))
width = xEnd - oldXPos;
}
else
{
fillColor = currentHL.bgColor();
}
}
else
{
paintBackground = false;
}
if (paintBackground)
paint.fillRect(oldXPos - xStart, 0, width, fs->fontHeight, fillColor);
if (isIMSel && paintBackground && !isTab)
{
paint.save();
paint.setPen( m_view->colorGroup().color( QColorGroup::BrightText ) );
}
// Draw indentation markers.
if (showIndentLines() && curCol < lastIndentColumn)
{
// Draw multiple guides when tab width greater than indent width.
const int charWidth = isTab ? m_tabWidth - curPos % m_tabWidth : 1;
// Do not draw indent guides on the first line.
int i = 0;
if (curPos == 0 || curPos % m_indentWidth > 0)
i = m_indentWidth - curPos % m_indentWidth;
for (; i < charWidth; i += m_indentWidth)
{
// In most cases this is done one or zero times.
paintIndentMarker(paint, xPos - xStart + i * spaceWidth, line);
// Draw highlighted line.
if (curPos+i == minIndent)
{
paintIndentMarker(paint, xPos - xStart + 1 + i * spaceWidth, line+1);
}
}
}
}
// or we will see no text ;)
int y = fs->fontAscent;
// make sure we redraw the right character groups on attrib/selection changes
// Special case... de-special case some of it
if (isTab || (curCol >= trailingWhitespaceColumn))
{
// Draw spaces too, because it might be eg. underlined
static QString spaces;
if (int(spaces.length()) != m_tabWidth)
spaces.fill(' ', m_tabWidth);
paint.drawText(oldXPos-xStart, y, isTab ? spaces : QString(" "));
if (showTabs())
{
// trailing spaces and tabs may also have to be different options.
// if( curCol >= lastIndentColumn )
paintWhitespaceMarker(paint, xPos - xStart, y);
}
// variable advancement
blockStartCol = nextCol;
oldXPos = xPosAfter;
}
else
{
// Here's where the money is...
paint.drawText(oldXPos-xStart, y, textLine->string(), blockStartCol, nextCol-blockStartCol);
// Draw preedit's underline
if (isIMEdit) {
QRect r( oldXPos - xStart, 0, xPosAfter - oldXPos, fs->fontHeight );
paint.drawLine( r.bottomLeft(), r.bottomRight() );
}
// Put pen color back
if (isIMSel) paint.restore();
// We're done drawing?
if ((int)xPos > xEnd)
break;
// variable advancement
blockStartCol = nextCol;
oldXPos = xPosAfter;
//oldS = s+1;
}
} // renderNow
// determine cursor X position
if (showCursor && (cursor->col() == int(curCol)))
{
cursorVisible = true;
cursorXPos = xPos;
cursorMaxWidth = xPosAfter - xPos;
cursorColor = &curAt->textColor();
}
} // xPosAfter >= xStart
else
{
// variable advancement
blockStartCol = nextCol;
oldXPos = xPosAfter;
}
// increase xPos
xPos = xPosAfter;
// increase attribs pos
textAttributes++;
// to only switch font/color if needed
oldAt = curAt;
oldColor = curColor;
// col move
curCol++;
nextCol++;
currentPos.setCol(currentPos.col() + 1);
// Update the current indentation pos.
if (isTab)
{
curPos += m_tabWidth - (curPos % m_tabWidth);
}
else
{
curPos++;
}
}
// If this line has a partial selection that's the start of a multi-line selection,
// we have to fill areas on the right side of the text with the selection color.
if (showSelections() && hasSel && !selectionPainted && xStart >= (int)xPos && m_view->lineEndSelected(line, -1))
{
paint.fillRect(0, 0, xEnd-xStart, fs->fontHeight, config()->selectionColor());
}
// Determine cursor position (if it is not within the range being drawn)
if (showCursor && (cursor->col() >= int(curCol)))
{
cursorVisible = true;
cursorXPos = xPos + (cursor->col() - int(curCol)) * fs->myFontMetrics.width(QChar(' '));
cursorMaxWidth = xPosAfter - xPos;
cursorColor = &oldAt->textColor();
}
}
// Paint cursor
if (cursorVisible)
{
uint cursorWidth = (caretStyle() == Replace && (cursorMaxWidth > 2)) ? cursorMaxWidth : 2;
paint.fillRect(cursorXPos-xStart, 0, cursorWidth, fs->fontHeight, *cursorColor);
}
// show word wrap marker if desirable
if (!isPrinterFriendly() && config()->wordWrapMarker() && fs->fixedPitch())
{
paint.setPen( config()->wordWrapMarkerColor() );
int _x = m_doc->config()->wordWrapAt() * fs->myFontMetrics.width('x') - xStart;
paint.drawLine( _x,0,_x,fs->fontHeight );
}
// cleanup ;)
delete bracketStartRange;
delete bracketEndRange;
}
uint KateRenderer::textWidth(const KateTextLine::Ptr &textLine, int cursorCol)
{
if (!textLine)
return 0;
const int len = textLine->length();
if (cursorCol < 0)
cursorCol = len;
KateFontStruct *fs = config()->fontStruct();
const QChar *unicode = textLine->text();
const QString &textString = textLine->string();
int x = 0;
int width;
for (int z = 0; z < cursorCol; z++) {
KateAttribute* a = attribute(textLine->attribute(z));
if (z < len) {
width = a->width(*fs, textString, z, m_tabWidth);
} else {
// DF: commented out. It happens all the time.
//Q_ASSERT(!m_doc->wrapCursor());
width = a->width(*fs, QChar(' '), m_tabWidth);
}
x += width;
if (z < len && unicode[z] == QChar('\t'))
x -= x % width;
}
return x;
}
uint KateRenderer::textWidth(const KateTextLine::Ptr &textLine, uint startcol, uint maxwidth, bool *needWrap, int *endX)
{
KateFontStruct *fs = config()->fontStruct();
uint x = 0;
uint endcol = startcol;
int endX2 = 0;
int lastWhiteSpace = -1;
int lastWhiteSpaceX = -1;
// used to not wrap a solitary word off the first line, ie. the
// first line should not wrap until some characters have been displayed if possible
bool foundNonWhitespace = startcol != 0;
bool foundWhitespaceAfterNonWhitespace = startcol != 0;
*needWrap = false;
const uint len = textLine->length();
const QChar *unicode = textLine->text();
const QString &textString = textLine->string();
uint z = startcol;
for (; z < len; z++)
{
KateAttribute* a = attribute(textLine->attribute(z));
int width = a->width(*fs, textString, z, m_tabWidth);
Q_ASSERT(width);
x += width;
// How should tabs be treated when they word-wrap on a print-out?
// if startcol != 0, this messes up (then again, word wrapping messes up anyway)
if (unicode[z] == QChar('\t'))
x -= x % width;
if (unicode[z].isSpace())
{
lastWhiteSpace = z+1;
lastWhiteSpaceX = x;
if (foundNonWhitespace)
foundWhitespaceAfterNonWhitespace = true;
}
else
{
if (!foundWhitespaceAfterNonWhitespace) {
foundNonWhitespace = true;
lastWhiteSpace = z+1;
lastWhiteSpaceX = x;
}
}
if (x <= maxwidth)
{
if (lastWhiteSpace > -1)
{
endcol = lastWhiteSpace;
endX2 = lastWhiteSpaceX;
}
else
{
endcol = z+1;
endX2 = x;
}
}
else if (z == startcol)
{
// require a minimum of 1 character advancement per call, even if it means drawing gets cut off
// (geez gideon causes troubles with starting the views very small)
endcol = z+1;
endX2 = x;
}
if (x >= maxwidth)
{
*needWrap = true;
break;
}
}
if (*needWrap)
{
if (endX)
*endX = endX2;
return endcol;
}
else
{
if (endX)
*endX = x;
return z+1;
}
}
uint KateRenderer::textWidth(const KateTextCursor &cursor)
{
int line = kMin(kMax(0, cursor.line()), (int)m_doc->numLines() - 1);
int col = kMax(0, cursor.col());
return textWidth(m_doc->kateTextLine(line), col);
}
uint KateRenderer::textWidth( KateTextCursor &cursor, int xPos, uint startCol)
{
bool wrapCursor = m_view->wrapCursor();
int x, oldX;
KateFontStruct *fs = config()->fontStruct();
if (cursor.line() < 0) cursor.setLine(0);
if (cursor.line() > (int)m_doc->lastLine()) cursor.setLine(m_doc->lastLine());
KateTextLine::Ptr textLine = m_doc->kateTextLine(cursor.line());
if (!textLine) return 0;
const uint len = textLine->length();
const QChar *unicode = textLine->text();
const QString &textString = textLine->string();
x = oldX = 0;
uint z = startCol;
while (x < xPos && (!wrapCursor || z < len)) {
oldX = x;
KateAttribute* a = attribute(textLine->attribute(z));
int width = 0;
if (z < len)
width = a->width(*fs, textString, z, m_tabWidth);
else
width = a->width(*fs, QChar(' '), m_tabWidth);
x += width;
if (z < len && unicode[z] == QChar('\t'))
x -= x % width;
z++;
}
if (xPos - oldX < x - xPos && z > 0) {
z--;
x = oldX;
}
cursor.setCol(z);
return x;
}
const QFont *KateRenderer::currentFont()
{
return config()->font();
}
const QFontMetrics* KateRenderer::currentFontMetrics()
{
return config()->fontMetrics();
}
uint KateRenderer::textPos(uint line, int xPos, uint startCol, bool nearest)
{
return textPos(m_doc->kateTextLine(line), xPos, startCol, nearest);
}
uint KateRenderer::textPos(const KateTextLine::Ptr &textLine, int xPos, uint startCol, bool nearest)
{
Q_ASSERT(textLine);
if (!textLine)
return 0;
KateFontStruct *fs = config()->fontStruct();
int x, oldX;
x = oldX = 0;
uint z = startCol;
const uint len = textLine->length();
const QString &textString = textLine->string();
while ( (x < xPos) && (z < len)) {
oldX = x;
KateAttribute* a = attribute(textLine->attribute(z));
x += a->width(*fs, textString, z, m_tabWidth);
z++;
}
if ( ( (! nearest) || xPos - oldX < x - xPos ) && z > 0 ) {
z--;
// newXPos = oldX;
}// else newXPos = x;
return z;
}
uint KateRenderer::fontHeight()
{
return config()->fontStruct ()->fontHeight;
}
uint KateRenderer::documentHeight()
{
return m_doc->numLines() * fontHeight();
}
bool KateRenderer::getSelectionBounds(uint line, uint lineLength, uint &start, uint &end)
{
bool hasSel = false;
if (m_view->hasSelection() && !m_view->blockSelectionMode())
{
if (m_view->lineIsSelection(line))
{
start = m_view->selStartCol();
end = m_view->selEndCol();
hasSel = true;
}
else if ((int)line == m_view->selStartLine())
{
start = m_view->selStartCol();
end = lineLength;
hasSel = true;
}
else if ((int)line == m_view->selEndLine())
{
start = 0;
end = m_view->selEndCol();
hasSel = true;
}
}
else if (m_view->lineHasSelected(line))
{
start = m_view->selStartCol();
end = m_view->selEndCol();
hasSel = true;
}
if (start > end) {
int temp = end;
end = start;
start = temp;
}
return hasSel;
}
void KateRenderer::updateConfig ()
{
// update the attibute list pointer
updateAttributes ();
if (m_view)
m_view->updateRendererConfig();
}
uint KateRenderer::spaceWidth()
{
return attribute(0)->width(*config()->fontStruct(), QChar(' '), m_tabWidth);
}
// kate: space-indent on; indent-width 2; replace-tabs on;
KateTextCursor
Simple cursor class with no document pointer.
Definition: katecursor.h:33
KateRenderer::setShowSelections
void setShowSelections(bool showSelections)
Set whether the view's selections should be shown.
Definition: katerenderer.cpp:116
KateAttribute
The Attribute class incorporates all text decorations supported by Kate.
Definition: kateattribute.h:32
KSharedPtr
KateRenderer::drawCaret
bool drawCaret() const
Determine whether the caret (text cursor) will be drawn.
Definition: katerenderer.h:75
KateRenderer::textPos
uint textPos(uint line, int xPos, uint startCol=0, bool nearest=true)
Definition: katerenderer.cpp:932
KateRenderer::attribute
KateAttribute * attribute(uint pos)
This takes an in index, and returns all the attributes for it.
Definition: katerenderer.cpp:69
KateRenderer::increaseFontSizes
void increaseFontSizes()
Change to a different font (soon to be font set?)
Definition: katerenderer.cpp:121
KateRenderer
Handles all of the work of rendering the text (used for the views and printing)
Definition: katerenderer.h:42
KateRenderer::setShowTabs
void setShowTabs(bool showTabs)
Set whether a mark should be painted to help identifying tabs.
Definition: katerenderer.cpp:87
KateRenderer::spaceWidth
uint spaceWidth()
Text width & height calculation functions...
Definition: katerenderer.cpp:1027
KateRenderer::setPrinterFriendly
void setPrinterFriendly(bool printerFriendly)
Configure this renderer to paint in a printer-friendly fashion.
Definition: katerenderer.cpp:144
KateRenderer::showIndentLines
bool showIndentLines() const
Definition: katerenderer.cpp:97
KateRenderer::config
KateRendererConfig * config()
Configuration.
Definition: katerenderer.h:264
KateRenderer::showSelections
bool showSelections() const
Show the view's selection?
Definition: katerenderer.h:136
KateRenderer::showTabs
bool showTabs() const
Definition: katerenderer.h:100
KateRenderer::paintTextLineBackground
bool paintTextLineBackground(QPainter &paint, int line, bool isCurrentLine, int xStart, int xEnd)
Paint the background of a line.
Definition: katerenderer.cpp:152
KateRenderer::setIndentWidth
void setIndentWidth(int indentWidth)
Sets the width of the tab.
Definition: katerenderer.cpp:107
KateRenderer::~KateRenderer
~KateRenderer()
Destructor.
Definition: katerenderer.cpp:57
KateRenderer::updateAttributes
void updateAttributes()
update the highlighting attributes (for example after an hl change or after hl config changed) ...
Definition: katerenderer.cpp:63
KateRenderer::setTabWidth
void setTabWidth(int tabWidth)
Sets the width of the tab.
Definition: katerenderer.cpp:92
KateRenderer::caretStyles
caretStyles
Style of Caret (Insert or Replace mode)
Definition: katerenderer.h:48
KateRenderer::caretStyle
KateRenderer::caretStyles caretStyle() const
The style of the caret (text cursor) to be painted.
Definition: katerenderer.h:87
KateRenderer::isPrinterFriendly
bool isPrinterFriendly() const
Definition: katerenderer.cpp:139
KateRenderer::setCaretStyle
void setCaretStyle(KateRenderer::caretStyles style)
Set the style of caret to be painted.
Definition: katerenderer.cpp:82
KateRenderer::setShowIndentLines
void setShowIndentLines(bool showLines)
Set whether a guide should be painted to help identifying indent lines.
Definition: katerenderer.cpp:102
KateRenderer::setDrawCaret
void setDrawCaret(bool drawCaret)
Set whether the caret (text cursor) will be drawn.
Definition: katerenderer.cpp:77
KateRenderer::KateRenderer
KateRenderer(KateDocument *doc, KateView *view=0)
Constructor.
Definition: katerenderer.cpp:37
KateRenderer::paintTextLine
void paintTextLine(QPainter &paint, const KateLineRange *range, int xStart, int xEnd, const KateTextCursor *cursor=0L, const KateBracketRange *bracketmark=0L)
This is the ultimate function to perform painting of a text line.
Definition: katerenderer.cpp:253

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