Drezil/imgui
1
0
Fork 0
mirror of https://github.com/Drezil/imgui.git synced 2025-07-04 12:08:47 +02:00
Code Issues Packages Projects Releases Wiki Activity

ImFont: Demo, Store Used4kPagesMap[] map in ImFont to facilitate iteration on all codepoints with a large value of IM_UNICODE_CODEPOINT_MAX. (#2815)

Browse Source 
Demo uses IsGlyphRangeUnused()
This commit is contained in:
omar
2019-10-29 23:48:59 +01:00
committed by ocornut
parent c8ea0a017d
commit 0283a6e566
3 changed files with 30 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
imgui_demo.cpp
View File

@ -3443,6 +3443,15 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
// Display all glyphs of the fonts in separate pages of 256 characters
for (unsigned int base = 0; base <= IM_UNICODE_CODEPOINT_MAX; base += 256)
{
// Skip ahead if a large bunch of glyphs are not present in the font (test in chunks of 4k)
// This is only a small optimization to reduce the number of iterations when IM_UNICODE_MAX_CODEPOINT is large.
// (if ImWchar==ImWchar32 we will do at least about 272 queries here)
if (!(base & 4095) && font->IsGlyphRangeUnused(base, base + 4095))
{
base += 4096 - 256;
continue;
}
int count = 0;
for (unsigned int n = 0; n < 256; n++)
count += font->FindGlyphNoFallback((ImWchar)(base + n)) ? 1 : 0;