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ImFont: Renamed (supposedly internal) fields (e.g. XAdvance to AdvanceX). Custom text renderers might be affected if they didn't use the GetCharAdvance() helper function.

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docking
omar 7 years ago
parent 10bb9524eb
commit 9e1ad7295f
4 changed files with 27 additions and 27 deletions
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6
imgui.cpp
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@ -3065,7 +3065,7 @@ ImVec2 ImGui::CalcTextSize(const char* text, const char* text_end, bool hide_tex
return ImVec2(0.0f, font_size);
ImVec2 text_size = font->CalcTextSizeA(font_size, FLT_MAX, wrap_width, text, text_display_end, NULL);
// Cancel out character spacing for the last character of a line (it is baked into glyph->XAdvance field)
// Cancel out character spacing for the last character of a line (it is baked into glyph->AdvanceX field)
const float font_scale = font_size / font->FontSize;
const float character_spacing_x = 1.0f * font_scale;
if (text_size.x > 0.0f)
@ -7856,8 +7856,8 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
password_font->Descent = g.Font->Descent;
password_font->ContainerAtlas = g.Font->ContainerAtlas;
password_font->FallbackGlyph = glyph;
password_font->FallbackXAdvance = glyph->XAdvance;
IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexXAdvance.empty() && password_font->IndexLookup.empty());
password_font->FallbackAdvanceX = glyph->AdvanceX;
IM_ASSERT(password_font->Glyphs.empty() && password_font->IndexAdvanceX.empty() && password_font->IndexLookup.empty());
PushFont(password_font);
}

10
imgui.h
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@ -1349,7 +1349,7 @@ struct ImFontConfig
struct ImFontGlyph
{
ImWchar Codepoint; // 0x0000..0xFFFF
float XAdvance; // Distance to next character (= data from font + ImFontConfig::GlyphExtraSpacing.x baked in)
float AdvanceX; // Distance to next character (= data from font + ImFontConfig::GlyphExtraSpacing.x baked in)
float X0, Y0, X1, Y1; // Glyph corners
float U0, V0, U1, V1; // Texture coordinates
};
@ -1457,10 +1457,10 @@ struct ImFont
float Scale; // = 1.f // Base font scale, multiplied by the per-window font scale which you can adjust with SetFontScale()
ImVec2 DisplayOffset; // = (0.f,1.f) // Offset font rendering by xx pixels
ImVector<ImFontGlyph> Glyphs; // // All glyphs.
ImVector<float> IndexXAdvance; // // Sparse. Glyphs->XAdvance in a directly indexable way (more cache-friendly, for CalcTextSize functions which are often bottleneck in large UI).
ImVector<float> IndexAdvanceX; // // Sparse. Glyphs->AdvanceX in a directly indexable way (more cache-friendly, for CalcTextSize functions which are often bottleneck in large UI).
ImVector<unsigned short> IndexLookup; // // Sparse. Index glyphs by Unicode code-point.
const ImFontGlyph* FallbackGlyph; // == FindGlyph(FontFallbackChar)
float FallbackXAdvance; // == FallbackGlyph->XAdvance
float FallbackAdvanceX; // == FallbackGlyph->AdvanceX
ImWchar FallbackChar; // = '?' // Replacement glyph if one isn't found. Only set via SetFallbackChar()
// Members: Cold ~18/26 bytes
@ -1477,7 +1477,7 @@ struct ImFont
IMGUI_API void BuildLookupTable();
IMGUI_API const ImFontGlyph*FindGlyph(ImWchar c) const;
IMGUI_API void SetFallbackChar(ImWchar c);
float GetCharAdvance(ImWchar c) const { return ((int)c < IndexXAdvance.Size) ? IndexXAdvance[(int)c] : FallbackXAdvance; }
float GetCharAdvance(ImWchar c) const { return ((int)c < IndexAdvanceX.Size) ? IndexAdvanceX[(int)c] : FallbackAdvanceX; }
bool IsLoaded() const { return ContainerAtlas != NULL; }
// 'max_width' stops rendering after a certain width (could be turned into a 2d size). FLT_MAX to disable.
@ -1489,7 +1489,7 @@ struct ImFont
// [Private]
IMGUI_API void GrowIndex(int new_size);
IMGUI_API void AddGlyph(ImWchar c, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float x_advance);
IMGUI_API void AddGlyph(ImWchar c, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x);
IMGUI_API void AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst = true); // Makes 'dst' character/glyph points to 'src' character/glyph. Currently needs to be called AFTER fonts have been built.
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS

2
imgui_demo.cpp
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@ -1951,7 +1951,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
ImGui::BeginTooltip();
ImGui::Text("Codepoint: U+%04X", base+n);
ImGui::Separator();
ImGui::Text("XAdvance+1: %.1f", glyph->XAdvance);
ImGui::Text("AdvanceX: %.1f", glyph->AdvanceX);
ImGui::Text("Pos: (%.2f,%.2f)->(%.2f,%.2f)", glyph->X0, glyph->Y0, glyph->X1, glyph->Y1);
ImGui::Text("UV: (%.3f,%.3f)->(%.3f,%.3f)", glyph->U0, glyph->V0, glyph->U1, glyph->V1);
ImGui::EndTooltip();

36
imgui_draw.cpp
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@ -1851,10 +1851,10 @@ void ImFont::Clear()
FontSize = 0.0f;
DisplayOffset = ImVec2(0.0f, 1.0f);
Glyphs.clear();
IndexXAdvance.clear();
IndexAdvanceX.clear();
IndexLookup.clear();
FallbackGlyph = NULL;
FallbackXAdvance = 0.0f;
FallbackAdvanceX = 0.0f;
ConfigDataCount = 0;
ConfigData = NULL;
ContainerAtlas = NULL;
@ -1869,13 +1869,13 @@ void ImFont::BuildLookupTable()
max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);
IM_ASSERT(Glyphs.Size < 0xFFFF); // -1 is reserved
IndexXAdvance.clear();
IndexAdvanceX.clear();
IndexLookup.clear();
GrowIndex(max_codepoint + 1);
for (int i = 0; i < Glyphs.Size; i++)
{
int codepoint = (int)Glyphs[i].Codepoint;
IndexXAdvance[codepoint] = Glyphs[i].XAdvance;
IndexAdvanceX[codepoint] = Glyphs[i].AdvanceX;
IndexLookup[codepoint] = (unsigned short)i;
}
@ -1888,17 +1888,17 @@ void ImFont::BuildLookupTable()
ImFontGlyph& tab_glyph = Glyphs.back();
tab_glyph = *FindGlyph((unsigned short)' ');
tab_glyph.Codepoint = '\t';
tab_glyph.XAdvance *= 4;
IndexXAdvance[(int)tab_glyph.Codepoint] = (float)tab_glyph.XAdvance;
tab_glyph.AdvanceX *= 4;
IndexAdvanceX[(int)tab_glyph.Codepoint] = (float)tab_glyph.AdvanceX;
IndexLookup[(int)tab_glyph.Codepoint] = (unsigned short)(Glyphs.Size-1);
}
FallbackGlyph = NULL;
FallbackGlyph = FindGlyph(FallbackChar);
FallbackXAdvance = FallbackGlyph ? FallbackGlyph->XAdvance : 0.0f;
FallbackAdvanceX = FallbackGlyph ? FallbackGlyph->AdvanceX : 0.0f;
for (int i = 0; i < max_codepoint + 1; i++)
if (IndexXAdvance[i] < 0.0f)
IndexXAdvance[i] = FallbackXAdvance;
if (IndexAdvanceX[i] < 0.0f)
IndexAdvanceX[i] = FallbackAdvanceX;
}
void ImFont::SetFallbackChar(ImWchar c)
@ -1909,14 +1909,14 @@ void ImFont::SetFallbackChar(ImWchar c)
void ImFont::GrowIndex(int new_size)
{
IM_ASSERT(IndexXAdvance.Size == IndexLookup.Size);
IM_ASSERT(IndexAdvanceX.Size == IndexLookup.Size);
if (new_size <= IndexLookup.Size)
return;
IndexXAdvance.resize(new_size, -1.0f);
IndexAdvanceX.resize(new_size, -1.0f);
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)
void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x)
{
Glyphs.resize(Glyphs.Size + 1);
ImFontGlyph& glyph = Glyphs.back();
@ -1929,10 +1929,10 @@ void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1,
glyph.V0 = v0;
glyph.U1 = u1;
glyph.V1 = v1;
glyph.XAdvance = (x_advance + ConfigData->GlyphExtraSpacing.x); // Bake spacing into XAdvance
glyph.AdvanceX = (advance_x + ConfigData->GlyphExtraSpacing.x); // Bake spacing into AdvanceX
if (ConfigData->PixelSnapH)
glyph.XAdvance = (float)(int)(glyph.XAdvance + 0.5f);
glyph.AdvanceX = (float)(int)(glyph.AdvanceX + 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);
@ -1950,7 +1950,7 @@ void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)
GrowIndex(dst + 1);
IndexLookup[dst] = (src < index_size) ? IndexLookup.Data[src] : (unsigned short)-1;
IndexXAdvance[dst] = (src < index_size) ? IndexXAdvance.Data[src] : 1.0f;
IndexAdvanceX[dst] = (src < index_size) ? IndexAdvanceX.Data[src] : 1.0f;
}
const ImFontGlyph* ImFont::FindGlyph(unsigned short c) const
@ -2018,7 +2018,7 @@ const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const c
}
}
const float char_width = ((int)c < IndexXAdvance.Size ? IndexXAdvance[(int)c] : FallbackXAdvance);
const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX[(int)c] : FallbackAdvanceX);
if (ImCharIsSpace(c))
{
if (inside_word)
@ -2135,7 +2135,7 @@ ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, cons
continue;
}
const float char_width = ((int)c < IndexXAdvance.Size ? IndexXAdvance[(int)c] : FallbackXAdvance) * scale;
const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX[(int)c] : FallbackAdvanceX) * scale;
if (line_width + char_width >= max_width)
{
s = prev_s;
@ -2267,7 +2267,7 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
float char_width = 0.0f;
if (const ImFontGlyph* glyph = FindGlyph((unsigned short)c))
{
char_width = glyph->XAdvance * scale;
char_width = glyph->AdvanceX * scale;
// Arbitrarily assume that both space and tabs are empty glyphs as an optimization
if (c != ' ' && c != '\t')

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