#include "qt_helpers.h"
#include "Font.h"
-#include "Language.h"
#include "LyXRC.h"
-#include "insets/Inset.h"
-
-#include "support/lassert.h"
#include "support/debug.h"
+#include "support/lassert.h"
+#include "support/lyxlib.h"
#include <algorithm>
-#include <QPixmapCache>
#include <QTextLayout>
-// Set USE_PIXMAP_CACHE to 1 for enabling the use of a Pixmap cache when
-// drawing text. This is especially useful for older PPC/Mac systems.
-#if defined(Q_WS_X11) || defined(QPA_XCB)
-#define USE_PIXMAP_CACHE 0
-#else
-#define USE_PIXMAP_CACHE 1
-#endif
-
using namespace std;
using namespace lyx::support;
const int Painter::thin_line = 1;
GuiPainter::GuiPainter(QPaintDevice * device, double pixel_ratio)
- : QPainter(device), Painter(pixel_ratio),
- use_pixmap_cache_(lyxrc.use_pixmap_cache && USE_PIXMAP_CACHE)
+ : QPainter(device), Painter(pixel_ratio)
{
- // new QPainter has default QPen:
- current_color_ = guiApp->colorCache().get(Color_black);
- current_ls_ = line_solid;
- current_lw_ = thin_line;
+ // set cache correctly
+ current_color_ = pen().color();
+ current_ls_ = pen().style() == Qt::DotLine ? line_onoffdash : line_solid;
+ current_lw_ = pen().width();
}
}
-QString GuiPainter::generateStringSignature(QString const & str,
- FontInfo const & f,
- double wordspacing)
-{
- QString sig = str;
- sig.append(QChar(static_cast<short>(f.family())));
- sig.append(QChar(static_cast<short>(f.series())));
- sig.append(QChar(static_cast<short>(f.realShape())));
- sig.append(QChar(static_cast<short>(f.size())));
- Color const & color = f.realColor();
- sig.append(QChar(static_cast<short>(color.baseColor)));
- sig.append(QChar(static_cast<short>(color.mergeColor)));
- sig.append(QString::number(wordspacing));
- if (!monochrome_min_.empty()) {
- QColor const & min = monochrome_min_.top();
- QColor const & max = monochrome_max_.top();
- sig.append(QChar(static_cast<short>(min.red())));
- sig.append(QChar(static_cast<short>(min.green())));
- sig.append(QChar(static_cast<short>(min.blue())));
- sig.append(QChar(static_cast<short>(max.red())));
- sig.append(QChar(static_cast<short>(max.green())));
- sig.append(QChar(static_cast<short>(max.blue())));
- }
- return sig;
-}
-
-
QColor GuiPainter::computeColor(Color col)
{
return filterColor(guiApp->colorCache().get(col));
// map into [min,max] interval
QColor const & min = monochrome_min_.top();
QColor const & max = monochrome_max_.top();
-
+
qreal v = col.valueF();
v *= v; // make it a bit steeper (i.e. darker)
-
+
qreal minr, ming, minb;
qreal maxr, maxg, maxb;
min.getRgbF(&minr, &ming, &minb);
max.getRgbF(&maxr, &maxg, &maxb);
-
+
QColor c;
c.setRgbF(
v * (minr - maxr) + maxr,
void GuiPainter::point(int x, int y, Color col)
{
- if (!isDrawingEnabled())
- return;
-
setQPainterPen(computeColor(col));
drawPoint(x, y);
}
line_style ls,
int lw)
{
- if (!isDrawingEnabled())
- return;
-
setQPainterPen(computeColor(col), ls, lw);
bool const do_antialiasing = renderHints() & TextAntialiasing
&& x1 != x2 && y1 != y2 && ls != line_solid_aliased;
line_style ls,
int lw)
{
- if (!isDrawingEnabled())
- return;
-
// double the size if needed
// FIXME THREAD
static QVector<QPoint> points(32);
line_style ls,
int lw)
{
- if (!isDrawingEnabled())
- return;
-
QPainterPath bpath;
// This is the starting point, so its control points are meaningless
bpath.moveTo(xp[0], yp[0]);
line_style ls,
int lw)
{
- if (!isDrawingEnabled())
- return;
-
setQPainterPen(computeColor(col), ls, lw);
drawRect(x, y, w, h);
}
void GuiPainter::fillRectangle(int x, int y, int w, int h, Color col)
{
- if (!isDrawingEnabled())
- return;
-
fillRect(x, y, w, h, guiApp->colorCache().get(col));
}
void GuiPainter::arc(int x, int y, unsigned int w, unsigned int h,
int a1, int a2, Color col)
{
- if (!isDrawingEnabled())
- return;
-
// LyX usings 1/64ths degree, Qt usings 1/16th
setQPainterPen(computeColor(col));
bool const do_antialiasing = renderHints() & TextAntialiasing;
fillRectangle(x, y, w, h, Color_graphicsbg);
- if (!isDrawingEnabled())
- return;
-
QImage const image = qlimage.image();
QRectF const drect = QRectF(x, y, w, h);
QRectF const srect = QRectF(0, 0, image.width(), image.height());
}
-void GuiPainter::do_drawText(int x, int y, QString str,
- GuiPainter::Direction const dir,
- FontInfo const & f, QFont ff)
-{
- setQPainterPen(computeColor(f.realColor()));
- if (font() != ff)
- setFont(ff);
-
- /* In LyX, the character direction is forced by the language.
- * Therefore, we have to signal that fact to Qt.
- */
-#if 1
- /* Use unicode override characters to enforce drawing direction
- * Source: http://www.iamcal.com/understanding-bidirectional-text/
- */
- if (dir == RtL)
- // Right-to-left override: forces to draw text right-to-left
- str = QChar(0x202E) + str;
- else if (dir == LtR)
- // Left-to-right override: forces to draw text left-to-right
- str = QChar(0x202D) + str;
- drawText(x, y, str);
-#else
- /* This looks like a cleaner solution, but it has drawbacks
- * - does not work reliably (Mac OS X, ...)
- * - it is not really documented
- * Keep it here for now, in case it can be helpful
- */
- //This is much stronger than setLayoutDirection.
- int flag = 0;
- if (dir == RtL)
- flag = Qt::TextForceRightToLeft;
- else if (dir == LtR)
- flag = Qt::TextForceLeftToRight;
- drawText(x + ((dir == RtL) ? textwidth : 0), y - fm.maxAscent(), 0, 0,
- flag | Qt::TextDontClip,
- str);
-#endif
-}
-
-
void GuiPainter::text(int x, int y, docstring const & s,
FontInfo const & f, Direction const dir,
double const wordspacing, double const tw)
{
//LYXERR0("text: x=" << x << ", s=" << s);
- if (s.empty() || !isDrawingEnabled())
+ if (s.empty())
return;
/* Caution: The following ucs4 to QString conversions work for symbol fonts
int textwidth = 0;
if (tw == 0.0)
- // Note that we have to take in account space stretching (word spacing)
- textwidth = fm.width(s) + count(s.begin(), s.end(), ' ') * wordspacing;
+ // Take into account space stretching (word spacing)
+ textwidth = fm.width(s) +
+ static_cast<int>(fm.countExpanders(s) * wordspacing);
else
textwidth = static_cast<int>(tw);
textDecoration(f, x, y, textwidth);
- if (use_pixmap_cache_) {
- QPixmap pm;
- QString key = generateStringSignature(str, f, wordspacing);
-
- // Warning: Left bearing is in general negative! Only the case
- // where left bearing is negative is of interest WRT the
- // pixmap width and the text x-position.
- // Only the left bearing of the first character is important
- // as we always write from left to right, even for
- // right-to-left languages.
- // FIXME: this is probably broken for RTL now that we draw full strings.
- // Morover the first/last element is possibly not the right one since the glyph may have changed.
- int const lb = min(fm.lbearing(s[0]), 0);
- int const mA = fm.maxAscent();
- if (QPixmapCache::find(key, pm)) {
- // Draw the cached pixmap.
- drawPixmap(x + lb, y - mA, pm);
- return;
- }
-
- // Only the right bearing of the last character is
- // important as we always write from left to right,
- // even for right-to-left languages.
- int const rb = fm.rbearing(s[s.size()-1]);
- int const w = textwidth + rb - lb;
- int const mD = fm.maxDescent();
- int const h = mA + mD;
- if (w > 0 && h > 0) {
- pm = QPixmap(static_cast<int>(pixelRatio() * w),
- static_cast<int>(pixelRatio() * h));
-#if QT_VERSION >= 0x050000
- pm.setDevicePixelRatio(pixelRatio());
-#endif
- pm.fill(Qt::transparent);
- GuiPainter p(&pm, pixelRatio());
- p.do_drawText(-lb, mA, str, dir, f, ff);
- QPixmapCache::insert(key, pm);
- //LYXERR(Debug::PAINTING, "h=" << h << " mA=" << mA << " mD=" << mD
- // << " w=" << w << " lb=" << lb << " tw=" << textwidth
- // << " rb=" << rb);
-
- // Draw the new cached pixmap.
- drawPixmap(x + lb, y - mA, pm);
- //rectangle(x-lb, y-mA, w, h, Color_green);
- }
- return;
+ setQPainterPen(computeColor(f.realColor()));
+ if (dir != Auto) {
+ auto ptl = fm.getTextLayout(s, dir == RtL, wordspacing);
+ QTextLine const & tline = ptl->lineForTextPosition(0);
+ ptl->draw(this, QPointF(x, y - tline.ascent()));
+ } else {
+ if (font() != ff)
+ setFont(ff);
+ drawText(x, y, str);
}
-
- // don't use the pixmap cache,
- do_drawText(x, y, str, dir, f, ff);
//LYXERR(Debug::PAINTING, "draw " << string(str.toUtf8())
// << " at " << x << "," << y);
}
int const height = fm.maxAscent() + fm.maxDescent();
int xmin = fm.pos2x(str, from, dir == RtL, wordspacing);
int xmax = fm.pos2x(str, to, dir == RtL, wordspacing);
- if (xmin > xmax)
+ // Avoid this case, since it would make the `other' text spill in some cases
+ if (xmin == xmax) {
+ text(x, y, str, fi, dir, wordspacing, tw);
+ return;
+ } else if (xmin > xmax)
swap(xmin, xmax);
// First the part in other color
underline(f, x, y, width);
if (f.strikeout() == FONT_ON)
strikeoutLine(f, x, y, width);
+ if (f.xout() == FONT_ON)
+ crossoutLines(f, x, y, width);
if (f.uuline() == FONT_ON)
doubleUnderline(f, x, y, width);
if (f.uwave() == FONT_ON)
static int max(int a, int b) { return a > b ? a : b; }
-void GuiPainter::button(int x, int y, int w, int h, bool mouseHover)
-{
- if (mouseHover)
- fillRectangle(x, y, w, h, Color_buttonhoverbg);
- else
- fillRectangle(x, y, w, h, Color_buttonbg);
- buttonFrame(x, y, w, h);
-}
-
-
-void GuiPainter::buttonFrame(int x, int y, int w, int h)
-{
- line(x, y, x, y + h - 1, Color_buttonframe);
- line(x - 1 + w, y, x - 1 + w, y + h - 1, Color_buttonframe);
- line(x, y - 1, x - 1 + w, y - 1, Color_buttonframe);
- line(x, y + h - 1, x - 1 + w, y + h - 1, Color_buttonframe);
-}
-
-
void GuiPainter::rectText(int x, int y, docstring const & str,
FontInfo const & font, Color back, Color frame)
{
- int width;
- int ascent;
- int descent;
+ int width, ascent, descent;
FontMetrics const & fm = theFontMetrics(font);
fm.rectText(str, width, ascent, descent);
if (frame != Color_none)
rectangle(x, y - ascent, width, ascent + descent, frame);
+ // FIXME: let offset depend on font
text(x + 3, y, str, font);
}
-void GuiPainter::buttonText(int x, int y, docstring const & str,
- FontInfo const & font, bool mouseHover)
+void GuiPainter::buttonText(int x, int baseline, docstring const & s,
+ FontInfo const & font, Color back, Color frame, int offset)
{
- int width;
- int ascent;
- int descent;
+ int width, ascent, descent;
FontMetrics const & fm = theFontMetrics(font);
- fm.buttonText(str, width, ascent, descent);
+ fm.buttonText(s, offset, width, ascent, descent);
- static int const d = Inset::TEXT_TO_INSET_OFFSET / 2;
+ static int const d = offset / 2;
- button(x + d, y - ascent, width - Inset::TEXT_TO_INSET_OFFSET, descent + ascent, mouseHover);
- text(x + Inset::TEXT_TO_INSET_OFFSET, y, str, font);
+ fillRectangle(x + d + 1, baseline - ascent + 1, width - offset - 1,
+ ascent + descent - 1, back);
+ rectangle(x + d, baseline - ascent, width - offset, ascent + descent, frame);
+ text(x + offset, baseline, s, font);
}
}
+void GuiPainter::crossoutLines(FontInfo const & f, int x, int y, int width)
+{
+ FontInfo tmpf = f;
+ tmpf.setXout(FONT_OFF);
+
+ // the definition of \xout in ulem.sty is
+ // \def\xout{\bgroup \markoverwith{\hbox to.35em{\hss/\hss}}\ULon}
+ // Let's mimick it somewhat.
+ double offset = max(0.35 * theFontMetrics(tmpf).em(), 1);
+ for (int i = 0 ; i < iround(width / offset) ; ++i)
+ text(x + iround(i * offset), y, '/', tmpf);
+}
+
+
void GuiPainter::doubleUnderline(FontInfo const & f, int x, int y, int width)
{
FontMetrics const & fm = theFontMetrics(f);
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