mirror of
https://github.com/scratchfoundation/bgfx.git
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86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
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/* Copyright 2013 Jeremie Roy. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#pragma once
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#include "font_manager.h"
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BGFX_HANDLE(TextBufferHandle);
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/// type of vertex and index buffer to use with a TextBuffer
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enum BufferType
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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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/// 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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class TextBuffer;
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class TextBufferManager
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{
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public:
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TextBufferManager(FontManager* fontManager = NULL);
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~TextBufferManager();
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void init(const char* shaderPath);
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TextBufferHandle createTextBuffer(FontType type, BufferType 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 submitTextBufferMask(TextBufferHandle handle, uint32_t viewMask, 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);
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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);
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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 size of the text
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//Rectangle measureText(FontHandle fontHandle, const char * _string);
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//Rectangle measureText(FontHandle fontHandle, const wchar_t * _string);
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private:
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struct BufferCache
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{
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uint16_t indexBufferHandle;
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uint16_t vertexBufferHandle;
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TextBuffer* textBuffer;
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BufferType bufferType;
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FontType fontType;
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};
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BufferCache* m_textBuffers;
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bx::HandleAlloc m_textBufferHandles;
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FontManager* m_fontManager;
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bgfx::VertexDecl m_vertexDecl;
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bgfx::UniformHandle m_u_texColor;
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bgfx::UniformHandle m_u_inverse_gamma;
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//shaders program
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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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