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55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
#pragma once
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#include <string>
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class WordWrapper {
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public:
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WordWrapper(const char *str, float maxW, int flags)
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: str_(str), maxW_(maxW), flags_(flags) {
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}
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virtual ~WordWrapper() {}
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std::string Wrapped();
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protected:
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virtual float MeasureWidth(const char *str, size_t bytes) = 0;
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void Wrap();
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bool WrapBeforeWord();
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void AppendWord(int endIndex, int lastChar, bool addNewline);
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void AddEllipsis();
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static bool IsCJK(uint32_t c);
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static bool IsPunctuation(uint32_t c);
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static bool IsSpace(uint32_t c);
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static bool IsShy(uint32_t c);
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static bool IsSpaceOrShy(uint32_t c) {
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return IsSpace(c) || IsShy(c);
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}
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const char *const str_;
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const float maxW_;
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const int flags_;
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std::string out_;
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// Index of last output / start of current word.
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int lastIndex_ = 0;
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// Ideal place to put an ellipsis if we run out of space.
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int lastEllipsisIndex_ = -1;
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// Index of last line start.
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size_t lastLineStart_ = 0;
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// Last character written to out_.
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int lastChar_ = 0;
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// Position the current word starts at.
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float x_ = 0.0f;
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// Most recent width of word since last index.
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float wordWidth_ = 0.0f;
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// Width of "..." when flag is set, zero otherwise.
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float ellipsisWidth_ = 0.0f;
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// Force the next word to cut partially and wrap.
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bool forceEarlyWrap_ = false;
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// Skip all characters until the next newline.
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bool scanForNewline_ = false;
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// Skip the next word, replaced with ellipsis.
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bool skipNextWord_ = false;
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};
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