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ImFont: Split some building code into a AddGlyph() helper (that custom rect code and imgui_freetype can use)

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omar
2017-09-26 18:41:21 +02:00
parent be03882a15
commit 529ca279a4
2 changed files with 26 additions and 19 deletions
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40
imgui_draw.cpp
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@ -1535,23 +1535,7 @@ bool ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
stbtt_aligned_quad q;
float dummy_x = 0.0f, dummy_y = 0.0f;
stbtt_GetPackedQuad(range.chardata_for_range, atlas->TexWidth, atlas->TexHeight, char_idx, &dummy_x, &dummy_y, &q, 0);
dst_font->Glyphs.resize(dst_font->Glyphs.Size + 1);
ImFont::Glyph& glyph = dst_font->Glyphs.back();
glyph.Codepoint = (ImWchar)codepoint;
glyph.X0 = q.x0 + off_x;
glyph.Y0 = q.y0 + off_y;
glyph.X1 = q.x1 + off_x;
glyph.Y1 = q.y1 + off_y;
glyph.U0 = q.s0;
glyph.V0 = q.t0;
glyph.U1 = q.s1;
glyph.V1 = q.t1;
glyph.XAdvance = (pc.xadvance + cfg.GlyphExtraSpacing.x); // Bake spacing into XAdvance
if (cfg.PixelSnapH)
glyph.XAdvance = (float)(int)(glyph.XAdvance + 0.5f);
dst_font->MetricsTotalSurface += (int)((glyph.U1 - glyph.U0) * atlas->TexWidth + 1.99f) * (int)((glyph.V1 - glyph.V0) * atlas->TexHeight + 1.99f); // +1 to account for average padding, +0.99 to round
dst_font->AddGlyph((ImWchar)codepoint, q.x0 + off_x, q.y0 + off_y, q.x1 + off_x, q.y1 + off_y, q.s0, q.t0, q.s1, q.t1, pc.xadvance);
}
}
cfg.DstFont->BuildLookupTable();
@ -1923,6 +1907,28 @@ void ImFont::GrowIndex(int new_size)
IndexLookup.resize(new_size, (unsigned short)-1);
}
void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float x_advance)
{
Glyphs.resize(Glyphs.Size + 1);
ImFont::Glyph& glyph = Glyphs.back();
glyph.Codepoint = (ImWchar)codepoint;
glyph.X0 = x0;
glyph.Y0 = y0;
glyph.X1 = x1;
glyph.Y1 = y1;
glyph.U0 = u0;
glyph.V0 = v0;
glyph.U1 = u1;
glyph.V1 = v1;
glyph.XAdvance = (x_advance + ConfigData->GlyphExtraSpacing.x); // Bake spacing into XAdvance
if (ConfigData->PixelSnapH)
glyph.XAdvance = (float)(int)(glyph.XAdvance + 0.5f);
// Compute rough surface usage metrics (+1 to account for average padding, +0.99 to round)
MetricsTotalSurface += (int)((glyph.U1 - glyph.U0) * ContainerAtlas->TexWidth + 1.99f) * (int)((glyph.V1 - glyph.V0) * ContainerAtlas->TexHeight + 1.99f);
}
void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)
{
IM_ASSERT(IndexLookup.Size > 0); // Currently this can only be called AFTER the font has been built, aka after calling ImFontAtlas::GetTexDataAs*() function.