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62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
#ifndef NVIM_GRID_H
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#define NVIM_GRID_H
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#include <stdbool.h>
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#include <string.h>
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#include "nvim/ascii.h"
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#include "nvim/buffer_defs.h"
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#include "nvim/grid_defs.h"
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#include "nvim/macros.h"
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#include "nvim/mbyte.h"
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#include "nvim/memory.h"
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#include "nvim/pos.h"
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/// By default, all windows are drawn on a single rectangular grid, represented by
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/// this ScreenGrid instance. In multigrid mode each window will have its own
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/// grid, then this is only used for global screen elements that hasn't been
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/// externalized.
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///
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/// Note: before the screen is initialized and when out of memory these can be
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/// NULL.
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EXTERN ScreenGrid default_grid INIT(= SCREEN_GRID_INIT);
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#define DEFAULT_GRID_HANDLE 1 // handle for the default_grid
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/// While resizing the screen this flag is set.
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EXTERN bool resizing_screen INIT(= 0);
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EXTERN schar_T *linebuf_char INIT(= NULL);
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EXTERN sattr_T *linebuf_attr INIT(= NULL);
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EXTERN colnr_T *linebuf_vcol INIT(= NULL);
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// Low-level functions to manipulate individual character cells on the
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// screen grid.
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/// Put a ASCII character in a screen cell.
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///
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/// If `x` is a compile time constant, schar_from_ascii(x) will also be.
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/// But the specific value varies per plattform.
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#ifdef ORDER_BIG_ENDIAN
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# define schar_from_ascii(x) ((schar_T)((x) << 24))
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#else
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# define schar_from_ascii(x) ((schar_T)(x))
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#endif
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/// Put a unicode character in a screen cell.
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static inline schar_T schar_from_char(int c)
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{
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schar_T sc = 0;
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if (c >= 0x200000) {
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// TODO(bfredl): this must NEVER happen, even if the file contained overlong sequences
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c = 0xFFFD;
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}
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utf_char2bytes(c, (char *)&sc);
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return sc;
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}
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#ifdef INCLUDE_GENERATED_DECLARATIONS
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# include "grid.h.generated.h"
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#endif
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#endif // NVIM_GRID_H
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