bgfx/examples/common/font/text_buffer_manager.h

98 lines
2.9 KiB
C
Raw Normal View History

2013-05-15 17:07:04 +04:00
/*
* Copyright 2013 Jeremie Roy. All rights reserved.
2013-04-23 00:42:11 +04:00
* License: http://www.opensource.org/licenses/BSD-2-Clause
2013-05-15 17:07:04 +04:00
*/
#ifndef TEXT_BUFFER_MANAGER_H_HEADER_GUARD
#define TEXT_BUFFER_MANAGER_H_HEADER_GUARD
2013-05-15 17:01:38 +04:00
2013-04-23 00:42:11 +04:00
#include "font_manager.h"
BGFX_HANDLE(TextBufferHandle);
2013-05-15 17:21:23 +04:00
2013-09-21 09:13:58 +04:00
#define MAX_TEXT_BUFFER_COUNT 64
2013-04-23 00:42:11 +04:00
/// type of vertex and index buffer to use with a TextBuffer
2013-06-04 10:16:02 +04:00
struct BufferType
2013-04-23 00:42:11 +04:00
{
2013-06-04 10:16:02 +04:00
enum Enum
{
Static,
Dynamic,
Transient,
};
2013-04-23 00:42:11 +04:00
};
/// special style effect (can be combined)
enum TextStyleFlags
{
2013-05-15 17:21:23 +04:00
STYLE_NORMAL = 0,
STYLE_OVERLINE = 1,
STYLE_UNDERLINE = 1 << 1,
2013-05-16 06:42:39 +04:00
STYLE_STRIKE_THROUGH = 1 << 2,
STYLE_BACKGROUND = 1 << 3,
2013-04-23 00:42:11 +04:00
};
2013-05-09 01:55:54 +04:00
struct TextRectangle
2013-05-15 17:21:23 +04:00
{
2013-05-09 01:55:54 +04:00
float width, height;
};
2013-04-23 00:42:11 +04:00
class TextBuffer;
class TextBufferManager
{
public:
2013-05-16 06:42:39 +04:00
TextBufferManager(FontManager* _fontManager);
~TextBufferManager();
2013-05-15 17:21:23 +04:00
2013-06-04 10:16:02 +04:00
TextBufferHandle createTextBuffer(uint32_t _type, BufferType::Enum _bufferType);
2013-05-16 06:42:39 +04:00
void destroyTextBuffer(TextBufferHandle _handle);
void submitTextBuffer(TextBufferHandle _handle, uint8_t _id, int32_t _depth = 0);
2013-05-15 17:21:23 +04:00
2013-05-16 06:42:39 +04:00
void setStyle(TextBufferHandle _handle, uint32_t _flags = STYLE_NORMAL);
void setTextColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
void setBackgroundColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
2013-05-15 17:21:23 +04:00
2013-05-16 06:42:39 +04:00
void setOverlineColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
void setUnderlineColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
void setStrikeThroughColor(TextBufferHandle _handle, uint32_t _rgba = 0x000000FF);
2013-05-15 17:21:23 +04:00
2013-05-16 06:42:39 +04:00
void setPenPosition(TextBufferHandle _handle, float _x, float _y);
2013-05-15 17:21:23 +04:00
2013-05-23 08:34:21 +04:00
/// Append an ASCII/utf-8 string to the buffer using current pen position and color.
void appendText(TextBufferHandle _handle, FontHandle _fontHandle, const char* _string, const char* _end = NULL);
2013-05-15 17:21:23 +04:00
2013-05-23 08:34:21 +04:00
/// Append a wide char unicode string to the buffer using current pen position and color.
void appendText(TextBufferHandle _handle, FontHandle _fontHandle, const wchar_t* _string, const wchar_t* _end = NULL);
2013-05-23 08:34:21 +04:00
/// Append a whole face of the atlas cube, mostly used for debugging and visualizing atlas.
void appendAtlasFace(TextBufferHandle _handle, uint16_t _faceIndex);
2013-05-15 17:21:23 +04:00
2013-05-23 08:34:21 +04:00
/// Clear the text buffer and reset its state (pen/color).
2013-05-16 06:42:39 +04:00
void clearTextBuffer(TextBufferHandle _handle);
2013-05-23 08:34:21 +04:00
/// Return the rectangular size of the current text buffer (including all its content).
TextRectangle getRectangle(TextBufferHandle _handle) const;
2013-04-23 00:42:11 +04:00
private:
2013-05-16 06:42:39 +04:00
struct BufferCache
{
uint16_t indexBufferHandleIdx;
uint16_t vertexBufferHandleIdx;
2013-05-16 06:42:39 +04:00
TextBuffer* textBuffer;
2013-06-04 10:16:02 +04:00
BufferType::Enum bufferType;
2013-05-17 09:03:57 +04:00
uint32_t fontType;
2013-05-16 06:42:39 +04:00
};
BufferCache* m_textBuffers;
2013-09-21 09:13:58 +04:00
bx::HandleAllocT<MAX_TEXT_BUFFER_COUNT> m_textBufferHandles;
2013-05-16 06:42:39 +04:00
FontManager* m_fontManager;
bgfx::VertexDecl m_vertexDecl;
bgfx::UniformHandle u_texColor;
bgfx::ProgramHandle m_basicProgram;
bgfx::ProgramHandle m_distanceProgram;
bgfx::ProgramHandle m_distanceSubpixelProgram;
2013-04-23 00:42:11 +04:00
};
2013-05-15 17:01:38 +04:00
#endif // TEXT_BUFFER_MANAGER_H_HEADER_GUARD