diff options
| -rw-r--r-- | src/gui/text/qfontengine.cpp | 39 | ||||
| -rw-r--r-- | src/gui/text/qfontengine_ft.cpp | 8 | ||||
| -rw-r--r-- | src/gui/text/qfontengine_p.h | 2 | ||||
| -rw-r--r-- | src/opengl/qpaintengine_opengl.cpp | 5 |
4 files changed, 47 insertions, 7 deletions
diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp index 47fe5c2..d7a9c23 100644 --- a/src/gui/text/qfontengine.cpp +++ b/src/gui/text/qfontengine.cpp @@ -624,6 +624,45 @@ QImage QFontEngine::alphaRGBMapForGlyph(glyph_t glyph, int /* margin */, const Q return rgbMask; } +QImage QFontEngine::alphaMapForGlyph(glyph_t glyph) +{ + glyph_metrics_t gm = boundingBox(glyph); + int glyph_x = qFloor(gm.x.toReal()); + int glyph_y = qFloor(gm.y.toReal()); + int glyph_width = qCeil((gm.x + gm.width).toReal()) - glyph_x; + int glyph_height = qCeil((gm.y + gm.height).toReal()) - glyph_y; + + if (glyph_width <= 0 || glyph_height <= 0) + return QImage(); + QFixedPoint pt; + pt.x = 0; + pt.y = -glyph_y; // the baseline + QPainterPath path; + QImage im(glyph_width + qAbs(glyph_x) + 4, glyph_height, QImage::Format_ARGB32_Premultiplied); + im.fill(Qt::transparent); + QPainter p(&im); + p.setRenderHint(QPainter::Antialiasing); + addGlyphsToPath(&glyph, &pt, 1, &path, 0); + p.setPen(Qt::NoPen); + p.setBrush(Qt::black); + p.drawPath(path); + p.end(); + + QImage indexed(im.width(), im.height(), QImage::Format_Indexed8); + QVector<QRgb> colors(256); + for (int i=0; i<256; ++i) + colors[i] = qRgba(0, 0, 0, i); + indexed.setColorTable(colors); + + for (int y=0; y<im.height(); ++y) { + uchar *dst = (uchar *) indexed.scanLine(y); + uint *src = (uint *) im.scanLine(y); + for (int x=0; x<im.width(); ++x) + dst[x] = qAlpha(src[x]); + } + + return indexed; +} void QFontEngine::removeGlyphFromCache(glyph_t) { diff --git a/src/gui/text/qfontengine_ft.cpp b/src/gui/text/qfontengine_ft.cpp index cb0b436..de03a3c 100644 --- a/src/gui/text/qfontengine_ft.cpp +++ b/src/gui/text/qfontengine_ft.cpp @@ -1788,9 +1788,11 @@ QImage QFontEngineFT::alphaMapForGlyph(glyph_t g) GlyphFormat glyph_format = antialias ? Format_A8 : Format_Mono; - Glyph *glyph = loadGlyph(g, glyph_format); - if (!glyph) - return QImage(); + Glyph *glyph = defaultGlyphSet.outline_drawing ? 0 : loadGlyph(g, glyph_format); + if (!glyph) { + unlockFace(); + return QFontEngine::alphaMapForGlyph(g); + } const int pitch = antialias ? (glyph->width + 3) & ~3 : ((glyph->width + 31)/32) * 4; diff --git a/src/gui/text/qfontengine_p.h b/src/gui/text/qfontengine_p.h index 176c728..dc18991 100644 --- a/src/gui/text/qfontengine_p.h +++ b/src/gui/text/qfontengine_p.h @@ -178,7 +178,7 @@ public: * Create a qimage with the alpha values for the glyph. * Returns an image indexed_8 with index values ranging from 0=fully transparant to 255=opaque */ - virtual QImage alphaMapForGlyph(glyph_t) = 0; + virtual QImage alphaMapForGlyph(glyph_t); virtual QImage alphaMapForGlyph(glyph_t, const QTransform &t); virtual QImage alphaRGBMapForGlyph(glyph_t, int margin, const QTransform &t); diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp index ec6e33b..5a212f5 100644 --- a/src/opengl/qpaintengine_opengl.cpp +++ b/src/opengl/qpaintengine_opengl.cpp @@ -5068,9 +5068,8 @@ void QOpenGLPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textIte // fall back to drawing a polygon if the scale factor is large, or // we use a gradient pen - if (ti.fontEngine->fontDef.pixelSize >= 64 - || (d->matrix.det() > 1) || (d->pen_brush_style >= Qt::LinearGradientPattern - && d->pen_brush_style <= Qt::ConicalGradientPattern)) { + if ((d->matrix.det() > 1) || (d->pen_brush_style >= Qt::LinearGradientPattern + && d->pen_brush_style <= Qt::ConicalGradientPattern)) { QPaintEngine::drawTextItem(p, textItem); return; } |