QSpanBuffer Class Reference

Public Functions
void	addSpan (int x, unsigned int len, int y, unsigned char coverage)
	QSpanBuffer (ProcessSpans blend, void *data, const QRect &clipRect)
	~QSpanBuffer ()

Private Functions
void	flushSpans ()

Properties
ProcessSpans	m_blend
QRect	m_clipRect
void *	m_data
int	m_spanCount
QT_FT_Span	m_spans [SPAN_BUFFER_SIZE]

Detailed Description

Definition at line 74 of file qrasterizer.cpp.

Constructors and Destructors

QSpanBuffer()

QSpanBuffer::QSpanBuffer ( ProcessSpans  blend, void *  data, const QRect &  clipRect  )

inline

Definition at line 76 of file qrasterizer.cpp.

        : m_spanCount(0)
        , m_blend(blend)
        , m_data(data)
        , m_clipRect(clipRect)
    {
    }

~QSpanBuffer()

QSpanBuffer::~QSpanBuffer ( )

inline

Definition at line 84 of file qrasterizer.cpp.

    {
        flushSpans();
    }

Functions

addSpan()

void QSpanBuffer::addSpan ( int  x, unsigned int  len, int  y, unsigned char  coverage  )

inline

Definition at line 89 of file qrasterizer.cpp.

Referenced by QScanConverter::emitNode(), qScanConvert(), and QRasterizer::rasterizeLine().

    {
        if (!coverage || !len)
            return;

        Q_ASSERT(y >= m_clipRect.top());
        Q_ASSERT(y <= m_clipRect.bottom());
        Q_ASSERT(x >= m_clipRect.left());
        Q_ASSERT(x + int(len) - 1 <= m_clipRect.right());

        m_spans[m_spanCount].x = x;
        m_spans[m_spanCount].len = len;
        m_spans[m_spanCount].y = y;
        m_spans[m_spanCount].coverage = coverage;

        if (++m_spanCount == SPAN_BUFFER_SIZE)
            flushSpans();
    }

flushSpans()

void QSpanBuffer::flushSpans ( )

inlineprivate

Definition at line 109 of file qrasterizer.cpp.

Referenced by addSpan(), and ~QSpanBuffer().

    {
        m_blend(m_spanCount, m_spans, m_data);
        m_spanCount = 0;
    }

Properties

m_blend

ProcessSpans QSpanBuffer::m_blend

private

Definition at line 118 of file qrasterizer.cpp.

Referenced by flushSpans().

m_clipRect

QRect QSpanBuffer::m_clipRect

private

Definition at line 121 of file qrasterizer.cpp.

Referenced by addSpan().

m_data

void* QSpanBuffer::m_data

private

Definition at line 119 of file qrasterizer.cpp.

Referenced by flushSpans().

m_spanCount

int QSpanBuffer::m_spanCount

private

Definition at line 116 of file qrasterizer.cpp.

Referenced by addSpan(), and flushSpans().

m_spans

QT_FT_Span QSpanBuffer::m_spans[SPAN_BUFFER_SIZE]

private

Definition at line 115 of file qrasterizer.cpp.

Referenced by addSpan(), and flushSpans().

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The documentation for this class was generated from the following file:

• /src/gui/painting/qrasterizer.cpp