public void SetCustomPixelBlender(PixelBlender32 customPixelBlender)
{
_destBitmapBlender.OutputPixelBlender = (customPixelBlender != null) ? customPixelBlender : _pixelBlenderBGRA;
}
public override void DrawFromGlyphPlans(GlyphPlanSequence glyphPlanSeq, int startAt, int len, float left, float top)
{
Typeface typeface = _textServices.ResolveTypeface(_font);
float scale = typeface.CalculateScaleToPixelFromPointSize(_font.SizeInPoints);
int recommendLineSpacing = (int)_font.LineSpacingInPixels;
//--------------------------
//TODO:
//if (x,y) is left top
//we need to adjust y again
//
TextureKind textureKind = _fontAtlas.TextureKind;
float gx = 0;
float gy = 0;
int baseY = (int)Math.Round(top);
float acc_x = 0;
float acc_y = 0;
int lineHeight = (int)_font.LineSpacingInPixels; //temp
PixelBlender32 prevPxBlender = _painter.DestBitmapBlender.OutputPixelBlender; //save
_painter.DestBitmapBlender.OutputPixelBlender = _maskPixelBlenderPerCompo; //change to new blender
bool fillGlyphByGlyph = true;
if (fillGlyphByGlyph)
{
//test...
//fill glyph-by-glyh
var aaTech = this.AntialiasTech;
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan unscaledGlyphPlan = glyphPlanSeq[i];
TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(unscaledGlyphPlan.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
int srcX, srcY, srcW, srcH;
glyphData.GetRect(out srcX, out srcY, out srcW, out srcH);
float ngx = acc_x + (float)Math.Round(unscaledGlyphPlan.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(unscaledGlyphPlan.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
//if (glyphData.TextureXOffset != 0)
//{
//}
gx = (float)(left + (ngx - glyphData.TextureXOffset)); //ideal x
gy = (float)(top + (ngy + glyphData.TextureYOffset - srcH + lineHeight));
acc_x += (float)Math.Round(unscaledGlyphPlan.AdvanceX * scale);
gy = (float)Math.Floor(gy);// + lineHeight;
//clear with solid black color
//_maskBufferPainter.Clear(Color.Black);
//clear mask buffer at specific pos
_maskBufferPainter.FillRect(gx - 1, gy - 1, srcW + 2, srcH + 2, Color.Black);
//draw 'stencil' glyph on mask-buffer
_maskBufferPainter.DrawImage(_fontBmp, gx, gy, srcX, _fontBmp.Height - (srcY + srcH), srcW, srcH);
switch (aaTech)
{
default:
{
//select component to render this need to render 3 times for lcd technique
//1. B
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.B;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.B;
_painter.FillRect(gx + 1, gy, srcW, srcH);
//2. G
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.G;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.G;
_painter.FillRect(gx + 1, gy, srcW, srcH);
//3. R
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.R;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.R;
_painter.FillRect(gx + 1, gy, srcW, srcH);
}
break;
case AntialiasTechnique.GreyscaleStencil:
{
//fill once
//we choose greeh channel (middle)
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.G;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.EnableAll;
_painter.FillRect(gx + 1, gy, srcW, srcH);
}
break;
}
}
}
else
{
//clear entire line
_maskBufferPainter.FillRect(gx - 1, gy - 1, _maskBufferPainter.Width - gx + 2, lineHeight + 2, Color.Black);
bool isFirst = true;
int startX = 0, startY = 0;
float lenW = 0;
float lenH = 0;
int seqLen = glyphPlanSeq.Count;
for (int i = 0; i < seqLen; ++i)
{
UnscaledGlyphPlan glyph = glyphPlanSeq[i];
TextureGlyphMapData glyphData;
if (!_fontAtlas.TryGetGlyphMapData(glyph.glyphIndex, out glyphData))
{
//if no glyph data, we should render a missing glyph ***
continue;
}
//--------------------------------------
//TODO: review precise height in float
//--------------------------------------
int srcX, srcY, srcW, srcH;
glyphData.GetRect(out srcX, out srcY, out srcW, out srcH);
float ngx = acc_x + (float)Math.Round(glyph.OffsetX * scale);
float ngy = acc_y + (float)Math.Round(glyph.OffsetY * scale);
//NOTE:
// -glyphData.TextureXOffset => restore to original pos
// -glyphData.TextureYOffset => restore to original pos
//--------------------------
gx = (float)(left + (ngx - glyphData.TextureXOffset)); //ideal x
gy = (float)(top + (ngy - glyphData.TextureYOffset - srcH + lineHeight));
acc_x += (float)Math.Round(glyph.AdvanceX * scale);
gy = (float)Math.Floor(gy) + lineHeight;
if (isFirst)
{
startX = (int)gx;
startY = (int)gy;
isFirst = false;
}
_maskBufferPainter.DrawImage(_fontBmp, gx + 1, gy, srcX, _fontBmp.Height - (srcY), srcW + 1, srcH);
lenW = gx + srcW;
if (srcH > lenH)
{
lenH = srcH;
}
}
//--------------------------
//fill color on 'stencil' mask
{
//select component to render this need to render 3 times for lcd technique
//1. B
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.B;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.B;
_painter.FillRect(startX + 1, startY, lenW, lenH);
//2. G
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.G;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.G;
_painter.FillRect(startX + 1, startY, lenW, lenH);
//3. R
_maskPixelBlenderPerCompo.SelectedMaskComponent = PixelBlenderColorComponent.R;
_maskPixelBlenderPerCompo.EnableOutputColorComponent = EnableOutputColorComponent.R;
_painter.FillRect(startX + 1, startY, lenW, lenH);
}
}
//
_painter.DestBitmapBlender.OutputPixelBlender = prevPxBlender;//restore back
}
