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41 lines
839 B
C++
41 lines
839 B
C++
#pragma once
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#include <cstdint>
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#include <string>
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class ScreenBase;
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namespace gui
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{
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class RulerHelper
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{
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public:
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RulerHelper();
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void Update(ScreenBase const & screen);
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static bool IsVisible(ScreenBase const & screen);
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void Invalidate();
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static float GetRulerHalfHeight();
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float GetRulerPixelLength() const;
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static float GetMaxRulerPixelLength();
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static int GetVerticalTextOffset();
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bool IsTextDirty() const;
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std::string const & GetRulerText() const;
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void ResetTextDirtyFlag();
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static void GetTextInitInfo(std::string & alphabet, uint32_t & size);
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private:
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double CalcMetersDiff(double value);
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void SetTextDirty();
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private:
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float m_pixelLength;
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int m_rangeIndex;
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std::string m_rulerText;
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bool m_isTextDirty;
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mutable bool m_dirtyTextRequested;
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int m_currentDrawScale = 0;
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};
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} // namespace gui
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