4coder/4ed_buffer.h

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/*
* Mr. 4th Dimention - Allen Webster
*
* 24.01.2018
*
* Buffer types
*
*/
// TOP
#if !defined(FRED_BUFFER_H)
#define FRED_BUFFER_H
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typedef i32 Buffer_Get_Chunk_Mode;
enum{
BufferGetChunk_Basic,
BufferGetChunk_ZeroTerminated,
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};
struct Cursor_With_Index{
i32 pos;
i32 index;
};
struct Gap_Buffer{
char *data;
i32 size1;
i32 gap_size;
i32 size2;
i32 max;
i32 *line_starts;
i32 line_count;
i32 line_max;
};
struct Gap_Buffer_Init{
Gap_Buffer *buffer;
char *data;
i32 size;
};
struct Gap_Buffer_Stream{
Gap_Buffer *buffer;
char *data;
i32 end;
i32 separated;
i32 absolute_end;
b32 use_termination_character;
char terminator;
};
global Gap_Buffer_Stream null_buffer_stream = {};
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struct Buffer_Chunk_Position{
i32 real_pos;
i32 chunk_pos;
i32 chunk_index;
};
struct Buffer_Batch_State{
i32 i;
i32 shift_total;
};
struct Buffer_Measure_Starts{
i32 i;
i32 count;
i32 start;
};
enum{
BLStatus_Finished,
BLStatus_NeedWrapLineShift,
BLStatus_NeedLineShift,
BLStatus_NeedWrapDetermination,
};
struct Buffer_Layout_Stop{
u32 status;
i32 line_index;
i32 wrap_line_index;
i32 pos;
i32 next_line_pos;
f32 x;
};
struct Buffer_Measure_Wrap_Params{
Gap_Buffer *buffer;
i32 *wrap_line_index;
System_Functions *system;
Face *face;
b32 virtual_white;
};
struct Buffer_Measure_Wrap_State{
Gap_Buffer_Stream stream;
i32 i;
i32 size;
b32 still_looping;
i32 line_index;
i32 current_wrap_index;
f32 current_adv;
f32 x;
b32 skipping_whitespace;
i32 wrap_unit_end;
b32 did_wrap;
b32 first_of_the_line;
Translation_State tran;
Translation_Emits emits;
u32 J;
Buffer_Model_Step step;
Buffer_Model_Behavior behavior;
i32 __pc__;
};
struct Buffer_Cursor_Seek_Params{
Gap_Buffer *buffer;
Buffer_Seek seek;
System_Functions *system;
Face *face;
i32 *wrap_line_index;
i32 *character_starts;
b32 virtual_white;
b32 return_hint;
Full_Cursor *cursor_out;
};
struct Buffer_Cursor_Seek_State{
Full_Cursor next_cursor;
Full_Cursor this_cursor;
Full_Cursor prev_cursor;
Gap_Buffer_Stream stream;
b32 still_looping;
i32 i;
i32 size;
i32 wrap_unit_end;
b32 first_of_the_line;
b32 xy_seek;
f32 ch_width;
i32 font_height;
Translation_State tran;
Translation_Emits emits;
u32 J;
Buffer_Model_Step step;
Buffer_Model_Behavior behavior;
i32 __pc__;
};
struct Buffer_Invert_Batch{
i32 i;
i32 shift_amount;
i32 len;
};
enum Buffer_Render_Flag{
BRFlag_Special_Character = (1 << 0),
BRFlag_Ghost_Character = (1 << 1)
};
struct Buffer_Render_Item{
i32 index;
u32 codepoint;
u32 flags;
f32 x0;
f32 y0;
f32 x1;
f32 y1;
};
struct Render_Item_Write{
Buffer_Render_Item *item;
Buffer_Render_Item *item_end;
f32 x;
f32 y;
System_Functions *system;
Face *face;
i32 font_height;
f32 x_min;
f32 x_max;
};
struct Buffer_Render_Params{
Gap_Buffer *buffer;
Buffer_Render_Item *items;
i32 max;
i32 *count;
f32 port_x;
f32 port_y;
f32 clip_w;
f32 scroll_x;
f32 scroll_y;
f32 width;
f32 height;
Full_Cursor start_cursor;
i32 wrapped;
System_Functions *system;
Face *face;
b32 virtual_white;
i32 wrap_slashes;
i32 one_past_last_abs_pos;
};
struct Buffer_Render_State{
Gap_Buffer_Stream stream;
b32 still_looping;
i32 i;
i32 size;
f32 shift_x;
f32 shift_y;
f32 ch_width;
Render_Item_Write write;
f32 byte_advance;
i32 line;
i32 wrap_line;
b8 skipping_whitespace;
b8 first_of_the_line;
b8 first_of_the_wrap;
i32 wrap_unit_end;
Translation_State tran;
Translation_Emits emits;
u32 J;
Buffer_Model_Step step;
Buffer_Model_Behavior behavior;
i32 __pc__;
};
#endif
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// BOTTOM