diff options
Diffstat (limited to 'src/gui/painting/qpaintengine_raster.cpp')
| -rw-r--r-- | src/gui/painting/qpaintengine_raster.cpp | 168 |
1 files changed, 93 insertions, 75 deletions
diff --git a/src/gui/painting/qpaintengine_raster.cpp b/src/gui/painting/qpaintengine_raster.cpp index 95b4100bd1..ada3ebfd12 100644 --- a/src/gui/painting/qpaintengine_raster.cpp +++ b/src/gui/painting/qpaintengine_raster.cpp @@ -349,6 +349,7 @@ void QRasterPaintEngine::init() #else (unsigned char *) malloc(d->rasterPoolSize); #endif + Q_CHECK_PTR(d->rasterPoolBase); // The antialiasing raster. d->grayRaster = new QT_FT_Raster; @@ -3904,7 +3905,7 @@ static void qt_merge_clip(const QClipData *c1, const QClipData *c2, QClipData *r // find required length int max = qMax(c1_spans[c1_count - 1].x + c1_spans[c1_count - 1].len, - c2_spans[c2_count - 1].x + c2_spans[c2_count - 1].len); + c2_spans[c2_count - 1].x + c2_spans[c2_count - 1].len); buffer.resize(max); memset(buffer.data(), 0, buffer.size() * sizeof(short)); @@ -3958,7 +3959,7 @@ void QRasterPaintEnginePrivate::initializeRasterizer(QSpanData *data) const QClipData *c = clip(); if (c) { const QRect r(QPoint(c->xmin, c->ymin), - QPoint(c->xmax, c->ymax)); + QPoint(c->xmax, c->ymax)); clipRect = clipRect.intersected(r); blend = data->blend; } else { @@ -4066,6 +4067,7 @@ void QRasterPaintEnginePrivate::rasterize(QT_FT_Outline *outline, #else (unsigned char *) malloc(rasterPoolSize); #endif + Q_CHECK_PTR(rasterPoolBase); // note: we just freed the old rasterPoolBase. I hope it's not fatal. qt_ft_grays_raster.raster_done(*grayRaster); qt_ft_grays_raster.raster_new(0, grayRaster); @@ -4301,93 +4303,107 @@ void QClipData::initialize() return; m_clipLines = (ClipLine *)calloc(sizeof(ClipLine), clipSpanHeight); - m_spans = (QSpan *)malloc(clipSpanHeight*sizeof(QSpan)); - - if (hasRectClip) { - int y = 0; - while (y < ymin) { - m_clipLines[y].spans = 0; - m_clipLines[y].count = 0; - ++y; - } + Q_CHECK_PTR(m_clipLines); + QT_TRY { + m_spans = (QSpan *)malloc(clipSpanHeight*sizeof(QSpan)); + Q_CHECK_PTR(m_spans); + + QT_TRY { + if (hasRectClip) { + int y = 0; + while (y < ymin) { + m_clipLines[y].spans = 0; + m_clipLines[y].count = 0; + ++y; + } - const int len = clipRect.width(); - count = 0; - while (y < ymax) { - QSpan *span = m_spans + count; - span->x = xmin; - span->len = len; - span->y = y; - span->coverage = 255; - ++count; - - m_clipLines[y].spans = span; - m_clipLines[y].count = 1; - ++y; - } + const int len = clipRect.width(); + count = 0; + while (y < ymax) { + QSpan *span = m_spans + count; + span->x = xmin; + span->len = len; + span->y = y; + span->coverage = 255; + ++count; - while (y < clipSpanHeight) { - m_clipLines[y].spans = 0; - m_clipLines[y].count = 0; - ++y; - } - } else if (hasRegionClip) { + m_clipLines[y].spans = span; + m_clipLines[y].count = 1; + ++y; + } - const QVector<QRect> rects = clipRegion.rects(); - const int numRects = rects.size(); + while (y < clipSpanHeight) { + m_clipLines[y].spans = 0; + m_clipLines[y].count = 0; + ++y; + } + } else if (hasRegionClip) { + + const QVector<QRect> rects = clipRegion.rects(); + const int numRects = rects.size(); + + { // resize + const int maxSpans = (ymax - ymin) * numRects; + if (maxSpans > allocated) { + QSpan *newSpans = (QSpan *)realloc(m_spans, maxSpans * sizeof(QSpan)); + Q_CHECK_PTR(newSpans); + m_spans = newSpans; + allocated = maxSpans; + } + } - { // resize - const int maxSpans = (ymax - ymin) * numRects; - if (maxSpans > allocated) { - m_spans = (QSpan *)realloc(m_spans, maxSpans * sizeof(QSpan)); - allocated = maxSpans; - } - } + int y = 0; + int firstInBand = 0; + while (firstInBand < numRects) { + const int currMinY = rects.at(firstInBand).y(); + const int currMaxY = currMinY + rects.at(firstInBand).height(); - int y = 0; - int firstInBand = 0; - while (firstInBand < numRects) { - const int currMinY = rects.at(firstInBand).y(); - const int currMaxY = currMinY + rects.at(firstInBand).height(); + while (y < currMinY) { + m_clipLines[y].spans = 0; + m_clipLines[y].count = 0; + ++y; + } - while (y < currMinY) { - m_clipLines[y].spans = 0; - m_clipLines[y].count = 0; - ++y; - } + int lastInBand = firstInBand; + while (lastInBand + 1 < numRects && rects.at(lastInBand+1).top() == y) + ++lastInBand; - int lastInBand = firstInBand; - while (lastInBand + 1 < numRects && rects.at(lastInBand+1).top() == y) - ++lastInBand; + while (y < currMaxY) { - while (y < currMaxY) { + m_clipLines[y].spans = m_spans + count; + m_clipLines[y].count = lastInBand - firstInBand + 1; - m_clipLines[y].spans = m_spans + count; - m_clipLines[y].count = lastInBand - firstInBand + 1; + for (int r = firstInBand; r <= lastInBand; ++r) { + const QRect &currRect = rects.at(r); + QSpan *span = m_spans + count; + span->x = currRect.x(); + span->len = currRect.width(); + span->y = y; + span->coverage = 255; + ++count; + } + ++y; + } - for (int r = firstInBand; r <= lastInBand; ++r) { - const QRect &currRect = rects.at(r); - QSpan *span = m_spans + count; - span->x = currRect.x(); - span->len = currRect.width(); - span->y = y; - span->coverage = 255; - ++count; + firstInBand = lastInBand + 1; } - ++y; - } - firstInBand = lastInBand + 1; - } + Q_ASSERT(count <= allocated); - Q_ASSERT(count <= allocated); + while (y < clipSpanHeight) { + m_clipLines[y].spans = 0; + m_clipLines[y].count = 0; + ++y; + } - while (y < clipSpanHeight) { - m_clipLines[y].spans = 0; - m_clipLines[y].count = 0; - ++y; + } + } QT_CATCH(...) { + free(m_spans); + QT_RETHROW; } - + } QT_CATCH(...) { + free(m_clipLines); + QT_RETHROW; } } @@ -4764,8 +4780,10 @@ static void qt_span_clip(int count, const QSpan *spans, void *userData) &newspans, newClip->allocated - newClip->count); newClip->count = newspans - newClip->m_spans; if (spans < end) { + QSpan *newSpan = (QSpan *)realloc(newClip->m_spans, newClip->allocated*2*sizeof(QSpan)); + Q_CHECK_PTR(newSpan); + newClip->m_spans = newSpan; newClip->allocated *= 2; - newClip->m_spans = (QSpan *)realloc(newClip->m_spans, newClip->allocated*sizeof(QSpan)); } } } |