79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
#include "word_wrap.h"
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#include <ctype.h>
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#include <stddef.h>
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#include <string.h>
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#include "text_font.h"
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namespace fallout {
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// 0x4BC6F0
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int wordWrap(const char* string, int width, short* breakpoints, short* breakpointsLengthPtr)
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{
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breakpoints[0] = 0;
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*breakpointsLengthPtr = 1;
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for (int index = 1; index < WORD_WRAP_MAX_COUNT; index++) {
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breakpoints[index] = -1;
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}
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if (fontGetMonospacedCharacterWidth() > width) {
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return -1;
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}
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if (fontGetStringWidth(string) < width) {
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breakpoints[*breakpointsLengthPtr] = (short)strlen(string);
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*breakpointsLengthPtr += 1;
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return 0;
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}
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int gap = fontGetLetterSpacing();
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int accum = 0;
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const char* prevSpaceOrHyphen = nullptr;
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const char* pch = string;
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while (*pch != '\0') {
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accum += gap + fontGetCharacterWidth(*pch & 0xFF);
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if (accum <= width) {
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// NOTE: quests.txt #807 uses extended ascii.
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if (isspace(*pch & 0xFF) || *pch == '-') {
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prevSpaceOrHyphen = pch;
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}
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} else {
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if (*breakpointsLengthPtr == WORD_WRAP_MAX_COUNT) {
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return -1;
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}
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if (prevSpaceOrHyphen != nullptr) {
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// Word wrap.
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breakpoints[*breakpointsLengthPtr] = prevSpaceOrHyphen - string + 1;
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*breakpointsLengthPtr += 1;
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pch = prevSpaceOrHyphen;
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} else {
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// Character wrap.
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breakpoints[*breakpointsLengthPtr] = pch - string;
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*breakpointsLengthPtr += 1;
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pch--;
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}
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prevSpaceOrHyphen = nullptr;
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accum = 0;
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}
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pch++;
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}
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if (*breakpointsLengthPtr == WORD_WRAP_MAX_COUNT) {
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return -1;
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}
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breakpoints[*breakpointsLengthPtr] = pch - string + 1;
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*breakpointsLengthPtr += 1;
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return 0;
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}
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} // namespace fallout
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