/**
- * \file QLPainter.C
+ * \file QLPainter.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
#include <config.h>
+#include <QTextLayout>
+
#include "QLPainter.h"
#include "GuiApplication.h"
-#include "GuiWorkArea.h"
+#include "GuiFontMetrics.h"
#include "QLImage.h"
#include "GuiApplication.h"
#include "language.h"
#include "LColor.h"
-#include "frontends/FontMetrics.h"
-
#include "support/unicode.h"
-#include <QPainter>
-#include <QPicture>
-#include <QPixmap>
-#include <QImage>
-
-using lyx::char_type;
-using lyx::docstring;
-
using std::endl;
using std::string;
namespace lyx {
namespace frontend {
-QLPainter::~QLPainter()
-{
-}
-
-
-QLPainter::QLPainter(GuiWorkArea * qwa)
- : Painter(), qwa_(qwa)
-{
-}
-
-
-void QLPainter::start()
+QLPainter::QLPainter(QPaintDevice * device)
+ : QPainter(device), Painter()
{
- qp_.reset(new QPainter(qwa_->paintDevice()));
// new QPainter has default QPen:
current_color_ = LColor::black;
current_ls_ = line_solid;
}
-void QLPainter::end()
-{
- qp_->end();
-}
-
-
-int QLPainter::paperWidth() const
+QLPainter::~QLPainter()
{
- return qwa_->viewport()->width();
+ QPainter::end();
+ //lyxerr << "QLPainter::end()" << endl;
}
-int QLPainter::paperHeight() const
-{
- return qwa_->viewport()->height();
-}
-
void QLPainter::setQPainterPen(LColor_color col,
Painter::line_style ls, Painter::line_width lw)
{
current_ls_ = ls;
current_lw_ = lw;
- QPen pen = qp_.get()->pen();
+ QPen pen = QPainter::pen();
pen.setColor(guiApp->colorCache().get(col));
case line_thick: pen.setWidth(3); break;
}
- qp_.get()->setPen(pen);
+ setPen(pen);
}
void QLPainter::point(int x, int y, LColor_color col)
{
+ if (!isDrawingEnabled())
+ return;
+
setQPainterPen(col);
- qp_->drawPoint(x, y);
+ drawPoint(x, y);
}
line_style ls,
line_width lw)
{
+ if (!isDrawingEnabled())
+ return;
+
setQPainterPen(col, ls, lw);
- qp_->drawLine(x1, y1, x2, y2);
+ setRenderHint(Antialiasing, x1 != x2 && y1 != y2);
+ drawLine(x1, y1, x2, y2);
+ setRenderHint(Antialiasing, false);
}
// Must use new as np is not known at compile time.
boost::scoped_array<QPoint> points(new QPoint[np]);
+ bool antialias = false;
for (int i = 0; i < np; ++i) {
points[i].setX(xp[i]);
points[i].setY(yp[i]);
+ if (i != 0)
+ antialias |= xp[i-1] != xp[i] && yp[i-1] != yp[i];
}
+ if (!isDrawingEnabled())
+ return;
+
setQPainterPen(col, ls, lw);
- qp_->drawPolyline(points.get(), np);
+ setRenderHint(Antialiasing, antialias);
+ drawPolyline(points.get(), np);
+ setRenderHint(Antialiasing, false);
}
line_style ls,
line_width lw)
{
+ if (!isDrawingEnabled())
+ return;
+
setQPainterPen(col, ls, lw);
- qp_->drawRect(x, y, w, h);
+ drawRect(x, y, w, h);
}
void QLPainter::fillRectangle(int x, int y, int w, int h, LColor_color col)
{
- qp_->fillRect(x, y, w, h, guiApp->colorCache().get(col));
+ fillRect(x, y, w, h, guiApp->colorCache().get(col));
}
void QLPainter::arc(int x, int y, unsigned int w, unsigned int h,
int a1, int a2, LColor_color col)
{
+ if (!isDrawingEnabled())
+ return;
+
// LyX usings 1/64ths degree, Qt usings 1/16th
setQPainterPen(col);
- qp_->drawArc(x, y, w, h, a1 / 4, a2 / 4);
+ setRenderHint(Antialiasing, true);
+ drawArc(x, y, w, h, a1 / 4, a2 / 4);
+ setRenderHint(Antialiasing, false);
}
-void QLPainter::image(int x, int y, int w, int h,
- lyx::graphics::Image const & i)
+void QLPainter::image(int x, int y, int w, int h, graphics::Image const & i)
{
- lyx::graphics::QLImage const & qlimage =
- static_cast<lyx::graphics::QLImage const &>(i);
+ graphics::QLImage const & qlimage =
+ static_cast<graphics::QLImage const &>(i);
fillRectangle(x, y, w, h, LColor::graphicsbg);
- qp_->drawImage(x, y, qlimage.qimage(), 0, 0, w, h);
-}
-
+ if (!isDrawingEnabled())
+ return;
-int QLPainter::text(int x, int y, docstring const & s, LyXFont const & f)
-{
- return text(x, y, reinterpret_cast<char_type const *>(s.data()), s.length(), f);
+ drawImage(x, y, qlimage.qimage(), 0, 0, w, h);
}
int QLPainter::text(int x, int y, char_type c, LyXFont const & f)
{
- char_type s[2] = { c, char_type('\0') };
- return text(x, y, s, 1, f);
+ docstring s(1, c);
+ return text(x, y, s, f);
}
setQPainterPen(f.realColor());
int textwidth = 0;
- size_t ls = s.length();
+ size_t const ls = s.length();
for (unsigned int i = 0; i < ls; ++i) {
QChar const c = s[i].toUpper();
if (c != s.at(i)) {
- qp_->setFont(qsmallfont);
+ setFont(qsmallfont);
} else {
- qp_->setFont(qfont);
+ setFont(qfont);
}
- qp_->drawText(x + textwidth, y, c);
- textwidth += qp_->fontMetrics().width(c);
+ if (isDrawingEnabled())
+ drawText(x + textwidth, y, c);
+ textwidth += fontMetrics().width(c);
}
return textwidth;
}
-int QLPainter::text(int x, int y, char_type const * s, size_t ls,
- LyXFont const & f)
+int QLPainter::text(int x, int y, docstring const & s,
+ LyXFont const & f)
{
-#if 0
- Encoding const * encoding = f.language()->encoding();
- if (f.isSymbolFont())
- encoding = encodings.symbol_encoding();
-#endif
-
- QString str;
- ucs4_to_qstring(s, ls, str);
+ /* Caution: The following ucs4 to QString conversions work for symbol fonts
+ only because they are no real conversions but simple casts in reality.
+ When we want to draw a symbol or calculate the metrics we pass the position
+ of the symbol in the font (as given in lib/symbols) as a char_type to the
+ frontend. This is just wrong, because the symbol is no UCS4 character at
+ all. You can think of this number as the code point of the symbol in a
+ custom symbol encoding. It works because this char_type is lateron again
+ interpreted as a position in the font again.
+ The correct solution would be to have extra functions for symbols, but that
+ would require to duplicate a lot of frontend and mathed support code.
+ */
+ QString str = toqstr(s);
#if 0
// HACK: QT3 refuses to show single compose characters
if (f.realShape() != LyXFont::SMALLCAPS_SHAPE) {
setQPainterPen(f.realColor());
- qp_->setFont(fi.font);
+ if (font() != fi.font)
+ setFont(fi.font);
// We need to draw the text as LTR as we use our own bidi code.
- qp_->setLayoutDirection(Qt::LeftToRight);
- qp_->drawText(x, y, str);
- textwidth = qp_->fontMetrics().width(str);
+ setLayoutDirection(Qt::LeftToRight);
+ if (isDrawingEnabled()) {
+ LYXERR(Debug::PAINTING) << "draw " << std::string(str.toUtf8())
+ << " at " << x << "," << y << std::endl;
+ // Qt4 does not display a glyph whose codepoint is the
+ // same as that of a soft-hyphen (0x00ad), unless it
+ // occurs at a line-break. As a kludge, we force Qt to
+ // render this glyph using a one-column line.
+ if (s.size() == 1 && str[0].unicode() == 0x00ad) {
+ QTextLayout adsymbol(str);
+ adsymbol.setFont(fi.font);
+ adsymbol.beginLayout();
+ QTextLine line = adsymbol.createLine();
+ line.setNumColumns(1);
+ line.setPosition(QPointF(0, -line.ascent()));
+ adsymbol.endLayout();
+ line.draw(this, QPointF(x, y));
+ } else
+ drawText(x, y, str);
+ }
+ // Here we use the font width cache instead of
+ // textwidth = fontMetrics().width(str);
+ // because the above is awfully expensive on MacOSX
+ textwidth = fi.metrics->width(str);
} else {
textwidth = smallCapsText(x, y, str, f);
}
}
-void QLPainter::drawPixmap(int x, int y, QPixmap const & pixmap)
-{
- qp_->drawPixmap(x, y, pixmap);
-}
-
-
-void QLPainter::drawImage(int x, int y, QImage const & image)
-{
- qp_->drawImage(x, y, image);
-}
-
} // namespace frontend
} // namespace lyx
+
projects / lyx.git / blobdiff