public void FlowText(FlowLayoutSource flowSource, FlowLayoutSink flowSink)
{
// Reflow all the text, from source to sink.
if (!isTextAnalysisComplete_)
{
throw new Exception("FlowLayout: Text analysis in not complete");
}
// Determine the font line height, needed by the flow source.
FontMetrics fontMetrics = fontFace_.Metrics;
float fontHeight = (fontMetrics.Ascent + fontMetrics.Descent + fontMetrics.LineGap) * fontEmSize_ / fontMetrics.DesignUnitsPerEm;
// Set initial cluster position to beginning of text.
ClusterPosition cluster = new ClusterPosition();
SetClusterPosition(ref cluster, 0);
RectangleF rect;
ClusterPosition nextCluster;
// Iteratively pull rect's from the source,
// and push as much text will fit to the sink.
while (cluster.textPosition < text_.Length)
{
// Pull the next rect from the source.
if (!flowSource.GetNextRect(fontHeight, out rect))
{
break;
}
if (rect.Right - rect.Left <= 0)
{
break; // Stop upon reaching zero sized rects.
}
// Fit as many clusters between breakpoints that will go in.
if (!FitText(ref cluster, text_.Length, rect.Right - rect.Left, out nextCluster))
{
break;
}
// Push the glyph runs to the sink.
if (!ProduceGlyphRuns(flowSink, ref rect, ref cluster, ref nextCluster))
{
break;
}
cluster = nextCluster;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CustomLayoutForm"/> class.
/// </summary>
public CustomLayoutForm()
{
InitializeComponent();
try
{
InitDirect2DAndDirectWrite();
}
catch (Exception ex)
{
LogException(ex);
Environment.Exit(1);
}
flowLayoutSource = new FlowLayoutSource();
flowLayoutSink = new FlowLayoutSink();
flowLayout = new FlowLayout(FactoryDWrite);
SetLayoutText(LayoutText.Latin);
SetLayoutShape(FlowShape.Circle);
panel1.Paint += RenderControlPaint;
panel1.Resize += RenderControlResize;
}
/// <summary>
/// Initializes a new instance of the <see cref="CustomLayoutForm"/> class.
/// </summary>
public CustomLayoutForm()
{
InitializeComponent();
try
{
InitDirect2DAndDirectWrite();
}
catch (Exception ex)
{
LogException(ex);
Environment.Exit(1);
}
flowLayoutSource = new FlowLayoutSource();
flowLayoutSink = new FlowLayoutSink();
flowLayout = new FlowLayout(FactoryDWrite);
SetLayoutText(LayoutText.Latin);
SetLayoutShape(FlowShape.Circle);
panel1.Paint += RenderControlPaint;
panel1.Resize += RenderControlResize;
}
public void FlowText(FlowLayoutSource flowSource, FlowLayoutSink flowSink)
{
// Reflow all the text, from source to sink.
if (!isTextAnalysisComplete_)
throw new Exception("FlowLayout: Text analysis in not complete");
// Determine the font line height, needed by the flow source.
FontMetrics fontMetrics = fontFace_.Metrics;
float fontHeight = (fontMetrics.Ascent + fontMetrics.Descent + fontMetrics.LineGap) * fontEmSize_ / fontMetrics.DesignUnitsPerEm;
// Set initial cluster position to beginning of text.
ClusterPosition cluster = new ClusterPosition();
SetClusterPosition(ref cluster, 0);
RectangleF rect;
ClusterPosition nextCluster;
// Iteratively pull rect's from the source,
// and push as much text will fit to the sink.
while (cluster.textPosition < text_.Length)
{
// Pull the next rect from the source.
if (!flowSource.GetNextRect(fontHeight, out rect))
break;
if (rect.Right - rect.Left <= 0)
break; // Stop upon reaching zero sized rects.
// Fit as many clusters between breakpoints that will go in.
if (!FitText(ref cluster, text_.Length, rect.Right - rect.Left, out nextCluster))
break;
// Push the glyph runs to the sink.
if (!ProduceGlyphRuns(flowSink, ref rect, ref cluster, ref nextCluster))
break;
cluster = nextCluster;
}
}
