98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
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/*
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* Copyright 2013 Jeremie Roy. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#ifndef TEXT_BUFFER_MANAGER_H_HEADER_GUARD
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#define TEXT_BUFFER_MANAGER_H_HEADER_GUARD
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#include "font_manager.h"
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BGFX_HANDLE(TextBufferHandle);
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#define MAX_TEXT_BUFFER_COUNT 64
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/// type of vertex and index buffer to use with a TextBuffer
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struct BufferType
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{
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enum Enum
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{
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Static,
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Dynamic,
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Transient,
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};
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};
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/// special style effect (can be combined)
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enum TextStyleFlags
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{
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STYLE_NORMAL = 0,
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STYLE_OVERLINE = 1,
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STYLE_UNDERLINE = 1 << 1,
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STYLE_STRIKE_THROUGH = 1 << 2,
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STYLE_BACKGROUND = 1 << 3,
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};
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struct TextRectangle
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{
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float width, height;
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};
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class TextBuffer;
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class TextBufferManager
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{
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public:
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TextBufferManager(FontManager* _fontManager);
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~TextBufferManager();
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TextBufferHandle createTextBuffer(uint32_t _type, BufferType::Enum _bufferType);
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void destroyTextBuffer(TextBufferHandle _handle);
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void submitTextBuffer(TextBufferHandle _handle, uint8_t _id, int32_t _depth = 0);
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void setStyle(TextBufferHandle _handle, uint32_t _flags = STYLE_NORMAL);
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void setTextColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
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void setBackgroundColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
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void setOverlineColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
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void setUnderlineColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
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void setStrikeThroughColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
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void setPenPosition(TextBufferHandle _handle, float _x, float _y);
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/// Append an ASCII/utf-8 string to the buffer using current pen position and color.
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void appendText(TextBufferHandle _handle, FontHandle _fontHandle, const char* _string, const char* _end = NULL);
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/// Append a wide char unicode string to the buffer using current pen position and color.
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void appendText(TextBufferHandle _handle, FontHandle _fontHandle, const wchar_t* _string, const wchar_t* _end = NULL);
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/// Append a whole face of the atlas cube, mostly used for debugging and visualizing atlas.
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void appendAtlasFace(TextBufferHandle _handle, uint16_t _faceIndex);
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/// Clear the text buffer and reset its state (pen/color).
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void clearTextBuffer(TextBufferHandle _handle);
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/// Return the rectangular size of the current text buffer (including all its content).
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TextRectangle getRectangle(TextBufferHandle _handle) const;
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private:
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struct BufferCache
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{
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uint16_t indexBufferHandleIdx;
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uint16_t vertexBufferHandleIdx;
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TextBuffer* textBuffer;
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BufferType::Enum bufferType;
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uint32_t fontType;
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};
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BufferCache* m_textBuffers;
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bx::HandleAllocT<MAX_TEXT_BUFFER_COUNT> m_textBufferHandles;
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FontManager* m_fontManager;
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bgfx::VertexDecl m_vertexDecl;
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bgfx::UniformHandle s_texColor;
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bgfx::ProgramHandle m_basicProgram;
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bgfx::ProgramHandle m_distanceProgram;
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bgfx::ProgramHandle m_distanceSubpixelProgram;
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};
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#endif // TEXT_BUFFER_MANAGER_H_HEADER_GUARD
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