/// <summary>
/// Draws a run of glyphs to a bitmap target at the specified position.
/// </summary>
/// <remarks>
/// You can use the IDWriteBitmapRenderTarget::DrawGlyphRun to render to a bitmap from a custom text renderer that you implement. The custom text renderer should call this method from within the <see cref="M:SharpDX.DirectWrite.TextRenderer.DrawGlyphRun(System.IntPtr,System.Single,System.Single,SharpDX.DirectWrite.MeasuringMode,SharpDX.DirectWrite.GlyphRun,SharpDX.DirectWrite.GlyphRunDescription,SharpDX.ComObject)" /> callback method as shown in the following code.
/// <code> STDMETHODIMP GdiTextRenderer::DrawGlyphRun( __maybenull void* clientDrawingContext, FLOAT baselineOriginX, FLOAT baselineOriginY, DWRITE_MEASURING_MODE measuringMode, __in DWRITE_GLYPH_RUN const* glyphRun, __in DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription, IUnknown* clientDrawingEffect )
/// { HRESULT hr = S_OK; // Pass on the drawing call to the render target to do the real work. RECT dirtyRect = {0}; hr = pRenderTarget_->DrawGlyphRun( baselineOriginX, baselineOriginY, measuringMode, glyphRun, pRenderingParams_, RGB(0,200,255), &dirtyRect ); return hr;
/// } </code>
///
/// The baselineOriginX, baslineOriginY, measuringMethod, and glyphRun parameters are provided (as arguments) when the callback method is invoked. The renderingParams, textColor and blackBoxRect are not. Default rendering params can be retrieved by using the <see cref="M:SharpDX.DirectWrite.Factory.CreateMonitorRenderingParams(System.IntPtr,SharpDX.DirectWrite.RenderingParams@)" /> method.
/// </remarks>
/// <param name="baselineOriginX">The horizontal position of the baseline origin, in DIPs, relative to the upper-left corner of the DIB. </param>
/// <param name="baselineOriginY">The vertical position of the baseline origin, in DIPs, relative to the upper-left corner of the DIB. </param>
/// <param name="measuringMode">The measuring method for glyphs in the run, used with the other properties to determine the rendering mode. </param>
/// <param name="glyphRun">The structure containing the properties of the glyph run. </param>
/// <param name="renderingParams">The object that controls rendering behavior. </param>
/// <param name="textColor">The foreground color of the text. </param>
/// <returns>If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code. </returns>
/// <unmanaged>HRESULT IDWriteBitmapRenderTarget::DrawGlyphRun([None] float baselineOriginX,[None] float baselineOriginY,[None] DWRITE_MEASURING_MODE measuringMode,[In] const DWRITE_GLYPH_RUN* glyphRun,[None] IDWriteRenderingParams* renderingParams,[None] COLORREF textColor,[Out, Optional] RECT* blackBoxRect)</unmanaged>
public void DrawGlyphRun(float baselineOriginX, float baselineOriginY, MeasuringMode measuringMode, GlyphRun glyphRun, RenderingParams renderingParams, Color4 textColor)
{
Rectangle temp;
DrawGlyphRun(baselineOriginX, baselineOriginY, measuringMode, glyphRun, renderingParams, textColor, out temp);
}
/// <summary>
/// Draws a run of glyphs to a bitmap target at the specified position.
/// </summary>
/// <remarks>
/// You can use the IDWriteBitmapRenderTarget::DrawGlyphRun to render to a bitmap from a custom text renderer that you implement. The custom text renderer should call this method from within the <see cref="M:SharpDX.DirectWrite.TextRenderer.DrawGlyphRun(System.IntPtr,System.Single,System.Single,SharpDX.DirectWrite.MeasuringMode,SharpDX.DirectWrite.GlyphRun,SharpDX.DirectWrite.GlyphRunDescription,SharpDX.ComObject)" /> callback method as shown in the following code.
/// <code> STDMETHODIMP GdiTextRenderer::DrawGlyphRun( __maybenull void* clientDrawingContext, FLOAT baselineOriginX, FLOAT baselineOriginY, DWRITE_MEASURING_MODE measuringMode, __in DWRITE_GLYPH_RUN const* glyphRun, __in DWRITE_GLYPH_RUN_DESCRIPTION const* glyphRunDescription, IUnknown* clientDrawingEffect )
/// { HRESULT hr = S_OK; // Pass on the drawing call to the render target to do the real work. RECT dirtyRect = {0}; hr = pRenderTarget_->DrawGlyphRun( baselineOriginX, baselineOriginY, measuringMode, glyphRun, pRenderingParams_, RGB(0,200,255), &dirtyRect ); return hr;
/// } </code>
///
/// The baselineOriginX, baslineOriginY, measuringMethod, and glyphRun parameters are provided (as arguments) when the callback method is invoked. The renderingParams, textColor and blackBoxRect are not. Default rendering params can be retrieved by using the <see cref="M:SharpDX.DirectWrite.Factory.CreateMonitorRenderingParams(System.IntPtr,SharpDX.DirectWrite.RenderingParams@)" /> method.
/// </remarks>
/// <param name="baselineOriginX">The horizontal position of the baseline origin, in DIPs, relative to the upper-left corner of the DIB. </param>
/// <param name="baselineOriginY">The vertical position of the baseline origin, in DIPs, relative to the upper-left corner of the DIB. </param>
/// <param name="measuringMode">The measuring method for glyphs in the run, used with the other properties to determine the rendering mode. </param>
/// <param name="glyphRun">The structure containing the properties of the glyph run. </param>
/// <param name="renderingParams">The object that controls rendering behavior. </param>
/// <param name="textColor">The foreground color of the text. </param>
/// <returns>If the method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code. </returns>
/// <unmanaged>HRESULT IDWriteBitmapRenderTarget::DrawGlyphRun([None] float baselineOriginX,[None] float baselineOriginY,[None] DWRITE_MEASURING_MODE measuringMode,[In] const DWRITE_GLYPH_RUN* glyphRun,[None] IDWriteRenderingParams* renderingParams,[None] COLORREF textColor,[Out, Optional] RECT* blackBoxRect)</unmanaged>
public void DrawGlyphRun(float baselineOriginX, float baselineOriginY, MeasuringMode measuringMode, GlyphRun glyphRun, RenderingParams renderingParams, RawColor4 textColor)
{
RawRectangle temp;
DrawGlyphRun(baselineOriginX, baselineOriginY, measuringMode, glyphRun, renderingParams, textColor, out temp);
}
private Glyph ImportGlyph(Factory factory, FontFace fontFace, char character, FontMetrics fontMetrics, float fontSize, FontAntiAliasMode antiAliasMode)
{
var indices = fontFace.GetGlyphIndices(new int[] { character });
var metrics = fontFace.GetDesignGlyphMetrics(indices, false);
var metric = metrics[0];
var width = (float)(metric.AdvanceWidth - metric.LeftSideBearing - metric.RightSideBearing) / fontMetrics.DesignUnitsPerEm * fontSize;
var height = (float)(metric.AdvanceHeight - metric.TopSideBearing - metric.BottomSideBearing) / fontMetrics.DesignUnitsPerEm * fontSize;
var xOffset = (float)metric.LeftSideBearing / fontMetrics.DesignUnitsPerEm * fontSize;
var yOffset = (float)(metric.TopSideBearing - metric.VerticalOriginY) / fontMetrics.DesignUnitsPerEm * fontSize;
var advanceWidth = (float)metric.AdvanceWidth / fontMetrics.DesignUnitsPerEm * fontSize;
//var advanceHeight = (float)metric.AdvanceHeight / fontMetrics.DesignUnitsPerEm * fontSize;
var pixelWidth = (int)Math.Ceiling(width + 4);
var pixelHeight = (int)Math.Ceiling(height + 4);
var matrix = new RawMatrix3x2
{
M11 = 1,
M22 = 1,
M31 = -(float)Math.Floor(xOffset) + 1,
M32 = -(float)Math.Floor(yOffset) + 1
};
Bitmap bitmap;
if (char.IsWhiteSpace(character))
{
bitmap = new Bitmap(1, 1, PixelFormat.Format32bppArgb);
}
else
{
var glyphRun = new GlyphRun
{
FontFace = fontFace,
Advances = new[] { (float)Math.Ceiling(advanceWidth) },
FontSize = fontSize,
BidiLevel = 0,
Indices = indices,
IsSideways = false,
Offsets = new[] { new GlyphOffset() }
};
RenderingMode renderingMode;
if (antiAliasMode != FontAntiAliasMode.Aliased)
{
var rtParams = new RenderingParams(factory);
renderingMode = fontFace.GetRecommendedRenderingMode(fontSize, 1.0f, MeasuringMode.Natural, rtParams);
rtParams.Dispose();
}
else
{
renderingMode = RenderingMode.Aliased;
}
using (var runAnalysis = new GlyphRunAnalysis(factory,
glyphRun,
1.0f,
matrix,
renderingMode,
MeasuringMode.Natural,
0.0f,
0.0f))
{
var bounds = new RawRectangle(0, 0, pixelWidth, pixelHeight);
bitmap = new Bitmap(pixelWidth, pixelHeight, PixelFormat.Format32bppArgb);
if (renderingMode == RenderingMode.Aliased)
{
var texture = new byte[pixelWidth * pixelHeight];
runAnalysis.CreateAlphaTexture(TextureType.Aliased1x1, bounds, texture, texture.Length);
for (int y = 0; y < pixelHeight; y++)
{
for (int x = 0; x < pixelWidth; x++)
{
int pixelX = y * pixelWidth + x;
var grey = texture[pixelX];
var color = Color.FromArgb(grey, grey, grey);
bitmap.SetPixel(x, y, color);
}
}
}
else
{
var texture = new byte[pixelWidth * pixelHeight * 3];
runAnalysis.CreateAlphaTexture(TextureType.Cleartype3x1, bounds, texture, texture.Length);
for (int y = 0; y < pixelHeight; y++)
{
for (int x = 0; x < pixelWidth; x++)
{
int pixelX = (y * pixelWidth + x) * 3;
var red = LinearToGamma(texture[pixelX]);
var green = LinearToGamma(texture[pixelX + 1]);
var blue = LinearToGamma(texture[pixelX + 2]);
var color = Color.FromArgb(red, green, blue);
bitmap.SetPixel(x, y, color);
}
}
}
}
}
var glyph = new Glyph(character, bitmap)
{
XOffset = -matrix.M31,
XAdvance = advanceWidth,
YOffset = -matrix.M32,
};
return glyph;
}
private Glyph ImportGlyph(Factory factory, FontFace fontFace, char character, FontMetrics fontMetrics, float fontSize, bool activateAntiAliasDetection)
{
var indices = fontFace.GetGlyphIndices(new int[] {character});
var metrics = fontFace.GetDesignGlyphMetrics(indices, false);
var metric = metrics[0];
var width = (float)(metric.AdvanceWidth - metric.LeftSideBearing - metric.RightSideBearing) / fontMetrics.DesignUnitsPerEm * fontSize;
var height = (float)(metric.AdvanceHeight - metric.TopSideBearing - metric.BottomSideBearing) / fontMetrics.DesignUnitsPerEm * fontSize;
var xOffset = (float)metric.LeftSideBearing / fontMetrics.DesignUnitsPerEm * fontSize;
var yOffset = (float)(metric.TopSideBearing - metric.VerticalOriginY) / fontMetrics.DesignUnitsPerEm * fontSize;
var advanceWidth = (float)(metric.AdvanceWidth) / fontMetrics.DesignUnitsPerEm * fontSize;
var advanceHeight = (float)(metric.AdvanceHeight) / fontMetrics.DesignUnitsPerEm * fontSize;
var pixelWidth = (int)Math.Ceiling(width + 2);
var pixelHeight = (int)Math.Ceiling(height + 2);
Bitmap bitmap;
if(char.IsWhiteSpace(character))
{
bitmap = new Bitmap(1, 1, PixelFormat.Format32bppArgb);
}
else
{
var glyphRun = new GlyphRun()
{
FontFace = fontFace,
Advances = new[] { (float)Math.Round(advanceWidth) },
FontSize = fontSize,
BidiLevel = 0,
Indices = indices,
IsSideways = false,
Offsets = new[] {new GlyphOffset()}
};
var matrix = SharpDX.Matrix.Identity;
matrix.M41 = -(float)Math.Floor(xOffset - 1);
matrix.M42 = -(float)Math.Floor(yOffset - 1);
RenderingMode renderingMode;
if (activateAntiAliasDetection)
{
var rtParams = new RenderingParams(factory);
renderingMode = fontFace.GetRecommendedRenderingMode(fontSize, 1.0f, MeasuringMode.Natural, rtParams);
rtParams.Dispose();
}
else
{
renderingMode = RenderingMode.Aliased;
}
using(var runAnalysis = new GlyphRunAnalysis(factory,
glyphRun,
1.0f,
matrix,
renderingMode,
MeasuringMode.Natural,
0.0f,
0.0f))
{
var bounds = new SharpDX.Rectangle(0, 0, pixelWidth, pixelHeight);
bitmap = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
if(renderingMode == RenderingMode.Aliased)
{
var texture = new byte[bounds.Width * bounds.Height];
runAnalysis.CreateAlphaTexture(TextureType.Aliased1x1, bounds, texture, texture.Length);
bitmap = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
for (int y = 0; y < bounds.Height; y++)
{
for (int x = 0; x < bounds.Width; x++)
{
int pixelX = y * bounds.Width + x;
var grey = texture[pixelX];
var color = Color.FromArgb(grey, grey, grey);
bitmap.SetPixel(x, y, color);
}
}
}
else
{
var texture = new byte[bounds.Width * bounds.Height * 3];
runAnalysis.CreateAlphaTexture(TextureType.Cleartype3x1, bounds, texture, texture.Length);
for (int y = 0; y < bounds.Height; y++)
{
for (int x = 0; x < bounds.Width; x++)
{
int pixelX = (y * bounds.Width + x) * 3;
var red = texture[pixelX];
var green = texture[pixelX + 1];
var blue = texture[pixelX + 2];
var color = Color.FromArgb(red, green, blue);
bitmap.SetPixel(x, y, color);
}
}
}
//var positionUnderline = (float)fontMetrics.UnderlinePosition / fontMetrics.DesignUnitsPerEm * fontSize;
//var positionUnderlineSize = (float)fontMetrics.UnderlineThickness / fontMetrics.DesignUnitsPerEm * fontSize;
}
}
var glyph = new Glyph(character, bitmap)
{
XOffset = (float)Math.Floor(xOffset-1),
XAdvance = (float)Math.Round(advanceWidth),
YOffset = (float)Math.Floor(yOffset-1),
};
return glyph;
}
