diff options
Diffstat (limited to 'view.h')
| -rw-r--r-- | view.h | 79 |
1 files changed, 50 insertions, 29 deletions
@@ -4,20 +4,31 @@ #include <stddef.h> #include <stdbool.h> -typedef struct View View; typedef struct Selection Selection; -typedef struct Cell Cell; #include "text.h" #include "ui.h" #include "array.h" typedef struct { + char *symbol; +} SyntaxSymbol; + +enum { + SYNTAX_SYMBOL_SPACE, + SYNTAX_SYMBOL_TAB, + SYNTAX_SYMBOL_TAB_FILL, + SYNTAX_SYMBOL_EOL, + SYNTAX_SYMBOL_EOF, + SYNTAX_SYMBOL_LAST, +}; + +typedef struct { Mark anchor; Mark cursor; } SelectionRegion; -struct Cell { +typedef struct { char data[16]; /* utf8 encoded character displayed in this cell (might be more than one Unicode codepoint. might also not be the same as in the underlying text, for example tabs get expanded */ @@ -27,7 +38,7 @@ struct Cell { occupied by the same character have a length of 0. */ int width; /* display width i.e. number of columns occupied by this character */ CellStyle style; /* colors and attributes used to display this cell */ -}; +} Cell; typedef struct Line Line; struct Line { /* a line on the screen, *not* in the file */ @@ -38,14 +49,45 @@ struct Line { /* a line on the screen, *not* in the file */ Cell cells[]; /* win->width cells storing information about the displayed characters */ }; +typedef struct { + Text *text; /* underlying text management */ + char *textbuf; /* scratch buffer used for drawing */ + UiWin *ui; /* corresponding ui window */ + Cell cell_blank; /* used for empty/blank cells */ + int width, height; /* size of display area */ + size_t start, end; /* currently displayed area [start, end] in bytes from the start of the file */ + size_t start_last; /* previously used start of visible area, used to update the mark */ + Mark start_mark; /* mark to keep track of the start of the visible area */ + size_t lines_size; /* number of allocated bytes for lines (grows only) */ + Line *lines; /* view->height number of lines representing view content */ + Line *topline; /* top of the view, first line currently shown */ + Line *lastline; /* last currently used line, always <= bottomline */ + Line *bottomline; /* bottom of view, might be unused if lastline < bottomline */ + Selection *selection; /* primary selection, always placed within the visible viewport */ + Selection *selection_latest; /* most recently created cursor */ + Selection *selection_dead; /* primary cursor which was disposed, will be removed when another cursor is created */ + int selection_count; /* how many cursors do currently exist */ + Line *line; /* used while drawing view content, line where next char will be drawn */ + int col; /* used while drawing view content, column where next char will be drawn */ + const SyntaxSymbol *symbols[SYNTAX_SYMBOL_LAST]; /* symbols to use for white spaces etc */ + int tabwidth; /* how many spaces should be used to display a tab character */ + Selection *selections; /* all cursors currently active */ + int selection_generation; /* used to filter out newly created cursors during iteration */ + bool need_update; /* whether view has been redrawn */ + bool large_file; /* optimize for displaying large files */ + int colorcolumn; + char *breakat; /* characters which might cause a word wrap */ + int wrapcolumn; /* wrap lines at minimum of window width and wrapcolumn (if != 0) */ + int wrapcol; /* used while drawing view content, column where word wrap might happen */ + bool prevch_breakat; /* used while drawing view content, previous char is part of breakat */ +} View; + /** * @defgroup view_life * @{ */ View *view_new(Text*); void view_free(View*); -void view_ui(View*, UiWin*); -Text *view_text(View*); void view_reload(View*, Text*); /** * @} @@ -53,7 +95,7 @@ void view_reload(View*, Text*); * @{ */ /** Get the currently displayed text range. */ -Filerange view_viewport_get(View*); +#define VIEW_VIEWPORT_GET(v) (Filerange){ .start = v->start, .end = v->end } /** * Get window coordinate of text position. * @param pos The position to query. @@ -65,10 +107,6 @@ Filerange view_viewport_get(View*); bool view_coord_get(View*, size_t pos, Line **line, int *row, int *col); /** Get position at the start of the ``n``-th window line, counting from 1. */ size_t view_screenline_goto(View*, int n); -/** Get first screen line. */ -Line *view_lines_first(View*); -/** Get last non-empty screen line. */ -Line *view_lines_last(View*); size_t view_slide_up(View*, int lines); size_t view_slide_down(View*, int lines); size_t view_scroll_up(View*, int lines); @@ -87,14 +125,11 @@ void view_scroll_to(View*, size_t pos); * @{ */ bool view_resize(View*, int width, int height); -int view_height_get(View*); -int view_width_get(View*); /** * @} * @defgroup view_draw * @{ */ -void view_invalidate(View*); void view_draw(View*); bool view_update(View*); @@ -113,7 +148,7 @@ bool view_update(View*); Selection *view_selections_new(View*, size_t pos); /** * Create a new selection even if position is already covered by an - * existing selection. + * existing selection. * @rst * .. note:: This should only be used if the old selection is eventually * disposed. @@ -168,13 +203,6 @@ Selection *view_selections_prev(Selection*); /** Get immediate successor of selection. */ Selection *view_selections_next(Selection*); /** - * Get number of existing selections. - * @rst - * .. note:: Is always at least 1. - * @endrst - */ -int view_selections_count(View*); -/** * Get selection index. * @rst * .. note:: Is always in range ``[0, count-1]``. @@ -357,17 +385,10 @@ bool view_regions_save(View*, Filerange*, SelectionRegion*); */ void view_options_set(View*, enum UiOption options); enum UiOption view_options_get(View*); -void view_colorcolumn_set(View*, int col); -int view_colorcolumn_get(View*); -void view_wrapcolumn_set(View*, int col); -int view_wrapcolumn_get(View*); bool view_breakat_set(View*, const char *breakat); -const char *view_breakat_get(View*); /** Set how many spaces are used to display a tab `\t` character. */ void view_tabwidth_set(View*, int tabwidth); -/** Get how many spaces are used to display a tab `\t` character. */ -int view_tabwidth_get(View*); /** Define a display style. */ bool view_style_define(View*, enum UiStyle, const char *style); /** Apply a style to a text range. */ |