return isUnclipped(rect, penWidth) ? data->unclipped_blend : data->blend;
}
+static QPair<int, int> visibleGlyphRange(const QRectF &clip, QFontEngine *fontEngine,
+ glyph_t *glyphs, QFixedPoint *positions, int numGlyphs)
+{
+ QFixed clipLeft = QFixed::fromReal(clip.left());
+ QFixed clipRight = QFixed::fromReal(clip.right());
+ QFixed clipTop = QFixed::fromReal(clip.top());
+ QFixed clipBottom = QFixed::fromReal(clip.bottom());
+
+ int first = 0;
+ while (first < numGlyphs) {
+ glyph_metrics_t metrics = fontEngine->boundingBox(glyphs[first]);
+ QFixed left = metrics.x + positions[first].x;
+ QFixed top = metrics.y + positions[first].y;
+ QFixed right = left + metrics.width;
+ QFixed bottom = top + metrics.height;
+ if (left < clipRight && right > clipLeft && top < clipBottom && bottom > clipTop)
+ break;
+ ++first;
+ }
+ int last = numGlyphs - 1;
+ while (last > first) {
+ glyph_metrics_t metrics = fontEngine->boundingBox(glyphs[last]);
+ QFixed left = metrics.x + positions[last].x;
+ QFixed top = metrics.y + positions[last].y;
+ QFixed right = left + metrics.width;
+ QFixed bottom = top + metrics.height;
+ if (left < clipRight && right > clipLeft && top < clipBottom && bottom > clipTop)
+ break;
+ --last;
+ }
+ return QPair<int, int>(first, last + 1);
+}
+
/*!
\reimp
*/
void QRasterPaintEngine::drawStaticTextItem(QStaticTextItem *textItem)
{
+ if (textItem->numGlyphs == 0)
+ return;
+
ensurePen();
ensureRasterState();
if (shouldDrawCachedGlyphs(fontEngine->fontDef.pixelSize, state()->matrix)) {
drawCachedGlyphs(textItem->numGlyphs, textItem->glyphs, textItem->glyphPositions,
fontEngine);
+ } else if (state()->matrix.type() < QTransform::TxProject) {
+ bool invertible;
+ QTransform invMat = state()->matrix.inverted(&invertible);
+ if (!invertible)
+ return;
+
+ QPair<int, int> range = visibleGlyphRange(invMat.mapRect(clipBoundingRect()),
+ textItem->fontEngine(), textItem->glyphs,
+ textItem->glyphPositions, textItem->numGlyphs);
+ QStaticTextItem copy = *textItem;
+ copy.glyphs += range.first;
+ copy.glyphPositions += range.first;
+ copy.numGlyphs = range.second - range.first;
+ QPaintEngineEx::drawStaticTextItem(©);
} else {
QPaintEngineEx::drawStaticTextItem(textItem);
}
void QRasterPaintEngine::drawTextItem(const QPointF &p, const QTextItem &textItem)
{
const QTextItemInt &ti = static_cast<const QTextItemInt &>(textItem);
- QRasterPaintEngineState *s = state();
#ifdef QT_DEBUG_DRAW
Q_D(QRasterPaintEngine);
d->glyphCacheType);
#endif
+ if (ti.glyphs.numGlyphs == 0)
+ return;
ensurePen();
ensureRasterState();
+ QRasterPaintEngineState *s = state();
+ QTransform matrix = s->matrix;
if (!supportsTransformations(ti.fontEngine)) {
QVarLengthArray<QFixedPoint> positions;
QVarLengthArray<glyph_t> glyphs;
- QTransform matrix = s->matrix;
matrix.translate(p.x(), p.y());
-
ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions);
drawCachedGlyphs(glyphs.size(), glyphs.constData(), positions.constData(), ti.fontEngine);
- return;
- }
+ } else if (matrix.type() < QTransform::TxProject) {
+ bool invertible;
+ QTransform invMat = matrix.inverted(&invertible);
+ if (!invertible)
+ return;
+
+ QVarLengthArray<QFixedPoint> positions;
+ QVarLengthArray<glyph_t> glyphs;
+
+ ti.fontEngine->getGlyphPositions(ti.glyphs, QTransform::fromTranslate(p.x(), p.y()),
+ ti.flags, glyphs, positions);
+ QPair<int, int> range = visibleGlyphRange(invMat.mapRect(clipBoundingRect()),
+ ti.fontEngine, glyphs.data(), positions.data(),
+ glyphs.size());
+ if (range.first >= range.second)
+ return;
- QPaintEngineEx::drawTextItem(p, ti);
+ QStaticTextItem staticTextItem;
+ staticTextItem.color = s->pen.color();
+ staticTextItem.font = s->font;
+ staticTextItem.setFontEngine(ti.fontEngine);
+ staticTextItem.numGlyphs = range.second - range.first;
+ staticTextItem.glyphs = glyphs.data() + range.first;
+ staticTextItem.glyphPositions = positions.data() + range.first;
+ QPaintEngineEx::drawStaticTextItem(&staticTextItem);
+ } else {
+ QPaintEngineEx::drawTextItem(p, ti);
+ }
}
/*!