Font::TextSize Font::process(int x, int y, text_iterator start, text_iterator end, Color color) {
Vec2f pen(x, y);
int startX = 0;
int endX = 0;
if(DoDraw) {
// Subtract one line height (since we flipped the Y origin to be like GDI)
pen.y += face->size->metrics.ascender >> 6;
}
FT_UInt prevGlyphIndex = 0;
FT_Pos prevRsbDelta = 0;
typedef std::map< unsigned int, std::vector<TexturedVertex> > MapTextureVertices;
MapTextureVertices mapTextureVertices;
for(text_iterator it = start; it != end; ) {
// Get glyph in glyph map
glyph_iterator itGlyph = getNextGlyph(it, end);
if(itGlyph == glyphs.end()) {
continue;
}
const Glyph & glyph = itGlyph->second;
// Kerning
if(FT_HAS_KERNING(face)) {
if(prevGlyphIndex != 0) {
FT_Vector delta;
FT_Get_Kerning(face, prevGlyphIndex, glyph.index, FT_KERNING_DEFAULT, &delta);
pen.x += delta.x >> 6;
}
prevGlyphIndex = glyph.index;
}
// Auto hinting adjustments
if(prevRsbDelta - glyph.lsb_delta >= 32) {
pen.x--;
} else if(prevRsbDelta - glyph.lsb_delta < -32) {
pen.x++;
}
prevRsbDelta = glyph.rsb_delta;
// Draw
if(DoDraw && glyph.size.x != 0 && glyph.size.y != 0) {
addGlyphVertices(mapTextureVertices[glyph.texture], glyph, pen, color);
} else {
ARX_UNUSED(pen), ARX_UNUSED(color);
}
// If this is the first drawn char, note the start position
if(startX == endX) {
startX = glyph.draw_offset.x;
}
endX = pen.x + glyph.draw_offset.x + glyph.size.x;
// Advance
pen.x += glyph.advance.x;
}
Vec2i Font::process(int x, int y, text_iterator start, text_iterator end, Color color) {
if(DoDraw) {
GRenderer->SetRenderState(Renderer::Lighting, false);
GRenderer->SetRenderState(Renderer::AlphaBlending, true);
GRenderer->SetBlendFunc(Renderer::BlendSrcAlpha, Renderer::BlendInvSrcAlpha);
GRenderer->SetRenderState(Renderer::DepthTest, false);
GRenderer->SetRenderState(Renderer::DepthWrite, false);
GRenderer->SetCulling(Renderer::CullNone);
// 2D projection setup... Put origin (0,0) in the top left corner like GDI...
Rect viewport = GRenderer->GetViewport();
GRenderer->Begin2DProjection(viewport.left, viewport.right,
viewport.bottom, viewport.top, -1.f, 1.f);
// Fixed pipeline texture stage operation
GRenderer->GetTextureStage(0)->SetColorOp(TextureStage::ArgDiffuse);
GRenderer->GetTextureStage(0)->SetAlphaOp(TextureStage::ArgTexture);
GRenderer->GetTextureStage(0)->SetWrapMode(TextureStage::WrapClamp);
GRenderer->GetTextureStage(0)->SetMinFilter(TextureStage::FilterNearest);
GRenderer->GetTextureStage(0)->SetMagFilter(TextureStage::FilterNearest);
}
float penX = x;
float penY = y;
int startX = 0;
int endX = 0;
if(DoDraw) {
// Subtract one line height (since we flipped the Y origin to be like GDI)
penY += face->size->metrics.ascender >> 6;
}
FT_UInt prevGlyphIndex = 0;
FT_Pos prevRsbDelta = 0;
for(text_iterator it = start; it != end; ) {
// Get glyph in glyph map
glyph_iterator itGlyph = getNextGlyph(it, end);
if(itGlyph == glyphs.end()) {
continue;
}
const Glyph & glyph = itGlyph->second;
// Kerning
if(FT_HAS_KERNING(face)) {
if(prevGlyphIndex != 0) {
FT_Vector delta;
FT_Get_Kerning(face, prevGlyphIndex, glyph.index, FT_KERNING_DEFAULT, &delta);
penX += delta.x >> 6;
}
prevGlyphIndex = glyph.index;
}
// Auto hinting adjustments
if(prevRsbDelta - glyph.lsb_delta >= 32) {
penX--;
} else if( prevRsbDelta - glyph.lsb_delta < -32) {
penX++;
}
prevRsbDelta = glyph.rsb_delta;
// Draw
if(DoDraw && glyph.size.x != 0 && glyph.size.y != 0) {
GRenderer->SetTexture(0, &textures->getTexture(glyph.texture));
GRenderer->DrawTexturedRect(
((int)penX) + glyph.draw_offset.x, ((int)penY) - glyph.draw_offset.y,
glyph.size.x, -glyph.size.y, glyph.uv_start.x, glyph.uv_end.y, glyph.uv_end.x,
glyph.uv_start.y, color
);
} else {
ARX_UNUSED(penY), ARX_UNUSED(color);
}
// If this is the first drawn char, note the start position
if(startX == endX) {
startX = glyph.draw_offset.x;
}
endX = penX + glyph.draw_offset.x + glyph.size.x;
// Advance
penX += glyph.advance.x;
}
