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[kandinsky] Fix Font::signedCharAsIndex

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This commit is contained in:
Léa Saviot
2018-11-22 15:28:54 +01:00
committed by Émilie Feral
parent eda07922ab
commit 8346ca606f
1 changed files with 7 additions and 1 deletions
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8
kandinsky/include/kandinsky/font.h
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@@ -40,7 +40,13 @@ private:
return static_cast<uint8_t>(c) - k_magicCharOffsetValue;
}
int signedCharAsIndex(char c) const {
return static_cast<int>(c) - k_magicCharOffsetValue;
int cInt = c;
if (cInt < 0) {
/* A char casted as int takes its value between -127 and +128, but we want
* a positive value. -127 is thus 129, -126 is 130, etc. */
cInt+=128+(cInt-(-127)+1);
}
return cInt - k_magicCharOffsetValue;
}
KDSize m_glyphSize;