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authorMarc André Tanner <mat@brain-dump.org>2015-04-22 11:47:38 +0200
committerMarc André Tanner <mat@brain-dump.org>2015-04-22 12:35:15 +0200
commit7318931acca4e6928a8014dd00dc66f6f061b6c4 (patch)
treeea8bc1b754f7cd2b609fc71ee69ff66a8e6a0eab /window.c
parent4d7c630ff37fd0609aa58f60d6bd08fe53e57533 (diff)
downloadvis-7318931acca4e6928a8014dd00dc66f6f061b6c4.tar.gz
vis-7318931acca4e6928a8014dd00dc66f6f061b6c4.tar.xz
More renames, no functional changes
Win -> View, window_* -> view_*
Diffstat (limited to 'window.c')
-rw-r--r--window.c706
1 files changed, 353 insertions, 353 deletions
diff --git a/window.c b/window.c
index df2b069..000e42d 100644
--- a/window.c
+++ b/window.c
@@ -35,66 +35,66 @@ typedef struct { /* cursor position */
bool highlighted; /* true e.g. when cursor is on a bracket */
} Cursor;
-struct Win { /* window showing part of a file */
+struct View { /* viewable area, showing part of a file */
Text *text; /* underlying text management */
UiWin *ui;
ViewEvent *events;
- int width, height; /* window text area size */
+ int width, height; /* size of display area */
Filepos start, end; /* currently displayed area [start, end] in bytes from the start of the file */
size_t lines_size; /* number of allocated bytes for lines (grows only) */
- Line *lines; /* win->height number of lines representing window content */
- Line *topline; /* top of the window, first line currently shown */
+ 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 screen, might be unused if lastline < bottomline */
+ Line *bottomline; /* bottom of view, might be unused if lastline < bottomline */
Filerange sel; /* selected text range in bytes from start of file */
- Cursor cursor; /* current window cursor position */
- Line *line; /* used while drawing window content, line where next char will be drawn */
- int col; /* used while drawing window content, column where next char will be drawn */
- Syntax *syntax; /* syntax highlighting definitions for this window or NULL */
+ Cursor cursor; /* current cursor position within view */
+ 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 */
+ Syntax *syntax; /* syntax highlighting definitions for this view or NULL */
int tabwidth; /* how many spaces should be used to display a tab character */
};
-static void window_clear(Win *win);
-static bool window_addch(Win *win, Cell *cell);
-static size_t window_cursor_update(Win *win);
+static void view_clear(View *view);
+static bool view_addch(View *view, Cell *cell);
+static size_t view_cursor_update(View *view);
/* set/move current cursor position to a given (line, column) pair */
-static size_t window_cursor_set(Win *win, Line *line, int col);
-/* move visible viewport n-lines up/down, redraws the window but does not change
+static size_t view_cursor_set(View *view, Line *line, int col);
+/* move visible viewport n-lines up/down, redraws the view but does not change
* cursor position which becomes invalid and should be corrected by either:
*
- * - window_cursor_to
- * - window_cursor_set
+ * - view_cursor_to
+ * - view_cursor_set
*
* the return value indicates wether the visible area changed.
*/
-static bool window_viewport_up(Win *win, int n);
-static bool window_viewport_down(Win *win, int n);
+static bool view_viewport_up(View *view, int n);
+static bool view_viewport_down(View *view, int n);
-void window_tabwidth_set(Win *win, int tabwidth) {
- win->tabwidth = tabwidth;
- window_draw(win);
+void view_tabwidth_set(View *view, int tabwidth) {
+ view->tabwidth = tabwidth;
+ view_draw(view);
}
-void window_selection_clear(Win *win) {
- win->sel = text_range_empty();
- window_draw(win);
- window_cursor_update(win);
+void view_selection_clear(View *view) {
+ view->sel = text_range_empty();
+ view_draw(view);
+ view_cursor_update(view);
}
-/* reset internal window data structures (cell matrix, line offsets etc.) */
-static void window_clear(Win *win) {
+/* reset internal view data structures (cell matrix, line offsets etc.) */
+static void view_clear(View *view) {
/* calculate line number of first line */
// TODO move elsewhere
- win->topline = win->lines;
- win->topline->lineno = text_lineno_by_pos(win->text, win->start);
- win->lastline = win->topline;
+ view->topline = view->lines;
+ view->topline->lineno = text_lineno_by_pos(view->text, view->start);
+ view->lastline = view->topline;
/* reset all other lines */
- size_t line_size = sizeof(Line) + win->width*sizeof(Cell);
- size_t end = win->height * line_size;
+ size_t line_size = sizeof(Line) + view->width*sizeof(Cell);
+ size_t end = view->height * line_size;
Line *prev = NULL;
for (size_t i = 0; i < end; i += line_size) {
- Line *line = (Line*)(((char*)win->lines) + i);
+ Line *line = (Line*)(((char*)view->lines) + i);
line->width = 0;
line->len = 0;
line->prev = prev;
@@ -102,14 +102,14 @@ static void window_clear(Win *win) {
prev->next = line;
prev = line;
}
- win->bottomline = prev ? prev : win->topline;
- win->bottomline->next = NULL;
- win->line = win->topline;
- win->col = 0;
+ view->bottomline = prev ? prev : view->topline;
+ view->bottomline->next = NULL;
+ view->line = view->topline;
+ view->col = 0;
}
-Filerange window_selection_get(Win *win) {
- Filerange sel = win->sel;
+Filerange view_selection_get(View *view) {
+ Filerange sel = view->sel;
if (sel.start > sel.end) {
size_t tmp = sel.start;
sel.start = sel.end;
@@ -117,79 +117,79 @@ Filerange window_selection_get(Win *win) {
}
if (!text_range_valid(&sel))
return text_range_empty();
- sel.end = text_char_next(win->text, sel.end);
+ sel.end = text_char_next(view->text, sel.end);
return sel;
}
-void window_selection_set(Win *win, Filerange *sel) {
- Cursor *cursor = &win->cursor;
- win->sel = *sel;
- window_draw(win);
- if (win->ui)
- win->ui->cursor_to(win->ui, cursor->col, cursor->row);
+void view_selection_set(View *view, Filerange *sel) {
+ Cursor *cursor = &view->cursor;
+ view->sel = *sel;
+ view_draw(view);
+ if (view->ui)
+ view->ui->cursor_to(view->ui, cursor->col, cursor->row);
}
-Filerange window_viewport_get(Win *win) {
- return (Filerange){ .start = win->start, .end = win->end };
+Filerange view_viewport_get(View *view) {
+ return (Filerange){ .start = view->start, .end = view->end };
}
-/* try to add another character to the window, return whether there was space left */
-static bool window_addch(Win *win, Cell *cell) {
- if (!win->line)
+/* try to add another character to the view, return whether there was space left */
+static bool view_addch(View *view, Cell *cell) {
+ if (!view->line)
return false;
int width;
static Cell empty;
- size_t lineno = win->line->lineno;
+ size_t lineno = view->line->lineno;
switch (cell->data[0]) {
case '\t':
- width = win->tabwidth - (win->col % win->tabwidth);
+ width = view->tabwidth - (view->col % view->tabwidth);
for (int w = 0; w < width; w++) {
- if (win->col + 1 > win->width) {
- win->line = win->line->next;
- win->col = 0;
- if (!win->line)
+ if (view->col + 1 > view->width) {
+ view->line = view->line->next;
+ view->col = 0;
+ if (!view->line)
return false;
- win->line->lineno = lineno;
+ view->line->lineno = lineno;
}
if (w == 0) {
/* first cell of a tab has a length of 1 */
- win->line->cells[win->col].len = cell->len;
- win->line->len += cell->len;
+ view->line->cells[view->col].len = cell->len;
+ view->line->len += cell->len;
} else {
/* all remaining ones have a lenght of zero */
- win->line->cells[win->col].len = 0;
+ view->line->cells[view->col].len = 0;
}
/* but all are marked as part of a tabstop */
- win->line->cells[win->col].width = 1;
- win->line->cells[win->col].data[0] = ' ';
- win->line->cells[win->col].data[1] = '\0';
- win->line->cells[win->col].istab = true;
- win->line->cells[win->col].attr = cell->attr;
- win->line->width++;
- win->col++;
+ view->line->cells[view->col].width = 1;
+ view->line->cells[view->col].data[0] = ' ';
+ view->line->cells[view->col].data[1] = '\0';
+ view->line->cells[view->col].istab = true;
+ view->line->cells[view->col].attr = cell->attr;
+ view->line->width++;
+ view->col++;
}
return true;
case '\n':
cell->width = 1;
- if (win->col + cell->width > win->width) {
- win->line = win->line->next;
- win->col = 0;
- if (!win->line)
+ if (view->col + cell->width > view->width) {
+ view->line = view->line->next;
+ view->col = 0;
+ if (!view->line)
return false;
- win->line->lineno = lineno;
+ view->line->lineno = lineno;
}
- win->line->cells[win->col] = *cell;
- win->line->len += cell->len;
- win->line->width += cell->width;
- for (int i = win->col + 1; i < win->width; i++)
- win->line->cells[i] = empty;
-
- win->line = win->line->next;
- if (win->line)
- win->line->lineno = lineno + 1;
- win->col = 0;
+ view->line->cells[view->col] = *cell;
+ view->line->len += cell->len;
+ view->line->width += cell->width;
+ for (int i = view->col + 1; i < view->width; i++)
+ view->line->cells[i] = empty;
+
+ view->line = view->line->next;
+ if (view->line)
+ view->line->lineno = lineno + 1;
+ view->col = 0;
return true;
default:
if ((unsigned char)cell->data[0] < 128 && !isprint((unsigned char)cell->data[0])) {
@@ -203,30 +203,30 @@ static bool window_addch(Win *win, Cell *cell) {
};
}
- if (win->col + cell->width > win->width) {
- for (int i = win->col; i < win->width; i++)
- win->line->cells[i] = empty;
- win->line = win->line->next;
- win->col = 0;
+ if (view->col + cell->width > view->width) {
+ for (int i = view->col; i < view->width; i++)
+ view->line->cells[i] = empty;
+ view->line = view->line->next;
+ view->col = 0;
}
- if (win->line) {
- win->line->width += cell->width;
- win->line->len += cell->len;
- win->line->lineno = lineno;
- win->line->cells[win->col] = *cell;
- win->col++;
+ if (view->line) {
+ view->line->width += cell->width;
+ view->line->len += cell->len;
+ view->line->lineno = lineno;
+ view->line->cells[view->col] = *cell;
+ view->col++;
/* set cells of a character which uses multiple columns */
for (int i = 1; i < cell->width; i++)
- win->line->cells[win->col++] = empty;
+ view->line->cells[view->col++] = empty;
return true;
}
return false;
}
}
-CursorPos window_cursor_getpos(Win *win) {
- Cursor *cursor = &win->cursor;
+CursorPos view_cursor_getpos(View *view) {
+ Cursor *cursor = &view->cursor;
Line *line = cursor->line;
CursorPos pos = { .line = line->lineno, .col = cursor->col };
while (line->prev && line->prev->lineno == pos.line) {
@@ -238,12 +238,12 @@ CursorPos window_cursor_getpos(Win *win) {
}
/* snyc current cursor position with internal Line/Cell structures */
-static void window_cursor_sync(Win *win) {
+static void view_cursor_sync(View *view) {
int row = 0, col = 0;
- size_t cur = win->start, pos = win->cursor.pos;
- Line *line = win->topline;
+ size_t cur = view->start, pos = view->cursor.pos;
+ Line *line = view->topline;
- while (line && line != win->lastline && cur < pos) {
+ while (line && line != view->lastline && cur < pos) {
if (cur + line->len > pos)
break;
cur += line->len;
@@ -252,104 +252,104 @@ static void window_cursor_sync(Win *win) {
}
if (line) {
- int max_col = MIN(win->width, line->width);
+ int max_col = MIN(view->width, line->width);
while (cur < pos && col < max_col) {
cur += line->cells[col].len;
/* skip over columns occupied by the same character */
while (++col < max_col && line->cells[col].len == 0);
}
} else {
- line = win->bottomline;
- row = win->height - 1;
+ line = view->bottomline;
+ row = view->height - 1;
}
- win->cursor.line = line;
- win->cursor.row = row;
- win->cursor.col = col;
+ view->cursor.line = line;
+ view->cursor.row = row;
+ view->cursor.col = col;
}
-/* place the cursor according to the screen coordinates in win->{row,col} and
- * fire user callback. if a selection is active, redraw the window to reflect
+/* place the cursor according to the screen coordinates in view->{row,col} and
+ * fire user callback. if a selection is active, redraw the view to reflect
* its changes. */
-static size_t window_cursor_update(Win *win) {
- Cursor *cursor = &win->cursor;
- if (win->sel.start != EPOS) {
- win->sel.end = cursor->pos;
- window_draw(win);
- } else if (win->ui && win->syntax) {
+static size_t view_cursor_update(View *view) {
+ Cursor *cursor = &view->cursor;
+ if (view->sel.start != EPOS) {
+ view->sel.end = cursor->pos;
+ view_draw(view);
+ } else if (view->ui && view->syntax) {
size_t pos = cursor->pos;
- size_t pos_match = text_bracket_match_except(win->text, pos, "<>");
- if (pos != pos_match && win->start <= pos_match && pos_match < win->end) {
+ size_t pos_match = text_bracket_match_except(view->text, pos, "<>");
+ if (pos != pos_match && view->start <= pos_match && pos_match < view->end) {
if (cursor->highlighted)
- window_draw(win); /* clear active highlighting */
+ view_draw(view); /* clear active highlighting */
cursor->pos = pos_match;
- window_cursor_sync(win);
+ view_cursor_sync(view);
cursor->line->cells[cursor->col].attr |= A_REVERSE;
cursor->pos = pos;
- window_cursor_sync(win);
- win->ui->draw_text(win->ui, win->topline);
+ view_cursor_sync(view);
+ view->ui->draw_text(view->ui, view->topline);
cursor->highlighted = true;
} else if (cursor->highlighted) {
cursor->highlighted = false;
- window_draw(win);
+ view_draw(view);
}
}
if (cursor->pos != cursor->lastpos)
cursor->lastcol = 0;
cursor->lastpos = cursor->pos;
- if (win->ui)
- win->ui->cursor_to(win->ui, cursor->col, cursor->row);
+ if (view->ui)
+ view->ui->cursor_to(view->ui, cursor->col, cursor->row);
return cursor->pos;
}
/* move the cursor to the character at pos bytes from the begining of the file.
- * if pos is not in the current viewport, redraw the window to make it visible */
-void window_cursor_to(Win *win, size_t pos) {
- size_t max = text_size(win->text);
+ * if pos is not in the current viewport, redraw the view to make it visible */
+void view_cursor_to(View *view, size_t pos) {
+ size_t max = text_size(view->text);
if (pos > max)
pos = max > 0 ? max - 1 : 0;
- if (pos == max && win->end != max) {
- /* do not display an empty screen when showing the end of the file */
- win->start = max - 1;
- window_viewport_up(win, win->height / 2);
+ if (pos == max && view->end != max) {
+ /* do not display an empty screen when shoviewg the end of the file */
+ view->start = max - 1;
+ view_viewport_up(view, view->height / 2);
} else {
/* set the start of the viewable region to the start of the line on which
* the cursor should be placed. if this line requires more space than
- * available in the window then simply start displaying text at the new
+ * available in the view then simply start displaying text at the new
* cursor position */
- for (int i = 0; i < 2 && (pos < win->start || pos > win->end); i++) {
- win->start = i == 0 ? text_line_begin(win->text, pos) : pos;
- window_draw(win);
+ for (int i = 0; i < 2 && (pos < view->start || pos > view->end); i++) {
+ view->start = i == 0 ? text_line_begin(view->text, pos) : pos;
+ view_draw(view);
}
}
- win->cursor.pos = pos;
- window_cursor_sync(win);
- window_cursor_update(win);
+ view->cursor.pos = pos;
+ view_cursor_sync(view);
+ view_cursor_update(view);
}
-/* redraw the complete with data starting from win->start bytes into the file.
- * stop once the screen is full, update win->end, win->lastline */
-void window_draw(Win *win) {
- window_clear(win);
+/* redraw the complete with data starting from view->start bytes into the file.
+ * stop once the screen is full, update view->end, view->lastline */
+void view_draw(View *view) {
+ view_clear(view);
/* current absolute file position */
- size_t pos = win->start;
+ size_t pos = view->start;
/* number of bytes to read in one go */
- size_t text_len = win->width * win->height;
+ size_t text_len = view->width * view->height;
/* current buffer to work with */
char text[text_len+1];
/* remaining bytes to process in buffer*/
- size_t rem = text_bytes_get(win->text, pos, text_len, text);
+ size_t rem = text_bytes_get(view->text, pos, text_len, text);
/* NUL terminate because regex(3) function expect it */
text[rem] = '\0';
/* current position into buffer from which to interpret a character */
char *cur = text;
/* current selection */
- Filerange sel = window_selection_get(win);
+ Filerange sel = view_selection_get(view);
/* syntax definition to use */
- Syntax *syntax = win->syntax;
+ Syntax *syntax = view->syntax;
/* matched tokens for each syntax rule */
regmatch_t match[syntax ? LENGTH(syntax->rules) : 1][1], *matched = NULL;
memset(match, 0, sizeof match);
@@ -403,7 +403,7 @@ void window_draw(Win *win) {
/* within matched expression */
matched = &match[i][0];
attrs = rule->color->attr;
- break; /* first match wins */
+ break; /* first match views */
}
}
}
@@ -421,7 +421,7 @@ void window_draw(Win *win) {
* wide character. advance file position and read
* another junk into buffer.
*/
- rem = text_bytes_get(win->text, pos, text_len, text);
+ rem = text_bytes_get(view->text, pos, text_len, text);
text[rem] = '\0';
cur = text;
continue;
@@ -440,14 +440,14 @@ void window_draw(Win *win) {
}
if (cur[0] == '\r' && rem > 1 && cur[1] == '\n') {
- /* convert windows style newline \r\n into a single char with len = 2 */
+ /* convert views style newline \r\n into a single char with len = 2 */
cell = (Cell){ .data = "\n", .len = 2, .width = 1, .istab = false };
}
cell.attr = attrs;
if (sel.start <= pos && pos < sel.end)
cell.attr |= A_REVERSE;
- if (!window_addch(win, &cell))
+ if (!view_addch(view, &cell))
break;
rem -= cell.len;
@@ -455,78 +455,78 @@ void window_draw(Win *win) {
pos += cell.len;
}
- /* set end of viewing region */
- win->end = pos;
- win->lastline = win->line ? win->line : win->bottomline;
- win->lastline->next = NULL;
- window_cursor_sync(win);
- if (win->ui)
- win->ui->draw_text(win->ui, win->topline);
- if (sel.start != EPOS && win->events && win->events->selection)
- win->events->selection(win->events->data, &sel);
+ /* set end of vieviewg region */
+ view->end = pos;
+ view->lastline = view->line ? view->line : view->bottomline;
+ view->lastline->next = NULL;
+ view_cursor_sync(view);
+ if (view->ui)
+ view->ui->draw_text(view->ui, view->topline);
+ if (sel.start != EPOS && view->events && view->events->selection)
+ view->events->selection(view->events->data, &sel);
}
-bool window_resize(Win *win, int width, int height) {
+bool view_resize(View *view, int width, int height) {
size_t lines_size = height*(sizeof(Line) + width*sizeof(Cell));
- if (lines_size > win->lines_size) {
- Line *lines = realloc(win->lines, lines_size);
+ if (lines_size > view->lines_size) {
+ Line *lines = realloc(view->lines, lines_size);
if (!lines)
return false;
- win->lines = lines;
- win->lines_size = lines_size;
+ view->lines = lines;
+ view->lines_size = lines_size;
}
- win->width = width;
- win->height = height;
- if (win->lines)
- memset(win->lines, 0, win->lines_size);
- window_draw(win);
+ view->width = width;
+ view->height = height;
+ if (view->lines)
+ memset(view->lines, 0, view->lines_size);
+ view_draw(view);
return true;
}
-int window_height_get(Win *win) {
- return win->height;
+int view_height_get(View *view) {
+ return view->height;
}
-void window_free(Win *win) {
- if (!win)
+void view_free(View *view) {
+ if (!view)
return;
- free(win->lines);
- free(win);
+ free(view->lines);
+ free(view);
}
-void window_reload(Win *win, Text *text) {
- win->text = text;
- window_selection_clear(win);
- window_cursor_to(win, 0);
- if (win->ui)
- win->ui->reload(win->ui, text);
+void view_reload(View *view, Text *text) {
+ view->text = text;
+ view_selection_clear(view);
+ view_cursor_to(view, 0);
+ if (view->ui)
+ view->ui->reload(view->ui, text);
}
-Win *window_new(Text *text, ViewEvent *events) {
+View *view_new(Text *text, ViewEvent *events) {
if (!text)
return NULL;
- Win *win = calloc(1, sizeof(Win));
- if (!win)
+ View *view = calloc(1, sizeof(View));
+ if (!view)
return NULL;
- win->text = text;
- win->events = events;
- win->tabwidth = 8;
+ view->text = text;
+ view->events = events;
+ view->tabwidth = 8;
- if (!window_resize(win, 1, 1)) {
- window_free(win);
+ if (!view_resize(view, 1, 1)) {
+ view_free(view);
return NULL;
}
- window_selection_clear(win);
- window_cursor_to(win, 0);
+ view_selection_clear(view);
+ view_cursor_to(view, 0);
- return win;
+ return view;
}
-void window_ui(Win *win, UiWin* ui) {
- win->ui = ui;
+void view_ui(View *view, UiWin* ui) {
+ view->ui = ui;
}
-size_t window_char_prev(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_char_prev(View *view) {
+ Cursor *cursor = &view->cursor;
Line *line = cursor->line;
do {
@@ -534,7 +534,7 @@ size_t window_char_prev(Win *win) {
if (!line->prev)
return cursor->pos;
cursor->line = line = line->prev;
- cursor->col = MIN(line->width, win->width - 1);
+ cursor->col = MIN(line->width, view->width - 1);
cursor->row--;
} else {
cursor->col--;
@@ -542,16 +542,16 @@ size_t window_char_prev(Win *win) {
} while (line->cells[cursor->col].len == 0);
cursor->pos -= line->cells[cursor->col].len;
- return window_cursor_update(win);
+ return view_cursor_update(view);
}
-size_t window_char_next(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_char_next(View *view) {
+ Cursor *cursor = &view->cursor;
Line *line = cursor->line;
do {
cursor->pos += line->cells[cursor->col].len;
- if ((line->width == win->width && cursor->col == win->width - 1) ||
+ if ((line->width == view->width && cursor->col == view->width - 1) ||
cursor->col == line->width) {
if (!line->next)
return cursor->pos;
@@ -563,15 +563,15 @@ size_t window_char_next(Win *win) {
}
} while (line->cells[cursor->col].len == 0);
- return window_cursor_update(win);
+ return view_cursor_update(view);
}
-static size_t window_cursor_set(Win *win, Line *line, int col) {
+static size_t view_cursor_set(View *view, Line *line, int col) {
int row = 0;
- size_t pos = win->start;
- Cursor *cursor = &win->cursor;
+ size_t pos = view->start;
+ Cursor *cursor = &view->cursor;
/* get row number and file offset at start of the given line */
- for (Line *cur = win->topline; cur && cur != line; cur = cur->next) {
+ for (Line *cur = view->topline; cur && cur != line; cur = cur->next) {
pos += cur->len;
row++;
}
@@ -591,35 +591,35 @@ static size_t window_cursor_set(Win *win, Line *line, int col) {
cursor->pos = pos;
cursor->line = line;
- window_cursor_update(win);
+ view_cursor_update(view);
return pos;
}
-static bool window_viewport_down(Win *win, int n) {
+static bool view_viewport_down(View *view, int n) {
Line *line;
- if (win->end == text_size(win->text))
+ if (view->end == text_size(view->text))
return false;
- if (n >= win->height) {
- win->start = win->end;
+ if (n >= view->height) {
+ view->start = view->end;
} else {
- for (line = win->topline; line && n > 0; line = line->next, n--)
- win->start += line->len;
+ for (line = view->topline; line && n > 0; line = line->next, n--)
+ view->start += line->len;
}
- window_draw(win);
+ view_draw(view);
return true;
}
-static bool window_viewport_up(Win *win, int n) {
+static bool view_viewport_up(View *view, int n) {
/* scrolling up is somewhat tricky because we do not yet know where
* the lines start, therefore scan backwards but stop at a reasonable
* maximum in case we are dealing with a file without any newlines
*/
- if (win->start == 0)
+ if (view->start == 0)
return false;
- size_t max = win->width * win->height;
+ size_t max = view->width * view->height;
char c;
- Iterator it = text_iterator_get(win->text, win->start - 1);
+ Iterator it = text_iterator_get(view->text, view->start - 1);
if (!text_iterator_byte_get(&it, &c))
return false;
@@ -637,262 +637,262 @@ static bool window_viewport_up(Win *win, int n) {
} while (text_iterator_byte_prev(&it, &c));
if (c == '\r')
off++;
- win->start -= off;
- window_draw(win);
+ view->start -= off;
+ view_draw(view);
return true;
}
-void window_redraw_top(Win *win) {
- Line *line = win->cursor.line;
- for (Line *cur = win->topline; cur && cur != line; cur = cur->next)
- win->start += cur->len;
- window_draw(win);
- window_cursor_to(win, win->cursor.pos);
+void view_redraw_top(View *view) {
+ Line *line = view->cursor.line;
+ for (Line *cur = view->topline; cur && cur != line; cur = cur->next)
+ view->start += cur->len;
+ view_draw(view);
+ view_cursor_to(view, view->cursor.pos);
}
-void window_redraw_center(Win *win) {
- int center = win->height / 2;
- size_t pos = win->cursor.pos;
+void view_redraw_center(View *view) {
+ int center = view->height / 2;
+ size_t pos = view->cursor.pos;
for (int i = 0; i < 2; i++) {
int linenr = 0;
- Line *line = win->cursor.line;
- for (Line *cur = win->topline; cur && cur != line; cur = cur->next)
+ Line *line = view->cursor.line;
+ for (Line *cur = view->topline; cur && cur != line; cur = cur->next)
linenr++;
if (linenr < center) {
- window_slide_down(win, center - linenr);
+ view_slide_down(view, center - linenr);
continue;
}
- for (Line *cur = win->topline; cur && cur != line && linenr > center; cur = cur->next) {
- win->start += cur->len;
+ for (Line *cur = view->topline; cur && cur != line && linenr > center; cur = cur->next) {
+ view->start += cur->len;
linenr--;
}
break;
}
- window_draw(win);
- window_cursor_to(win, pos);
+ view_draw(view);
+ view_cursor_to(view, pos);
}
-void window_redraw_bottom(Win *win) {
- Line *line = win->cursor.line;
- if (line == win->lastline)
+void view_redraw_bottom(View *view) {
+ Line *line = view->cursor.line;
+ if (line == view->lastline)
return;
int linenr = 0;
- size_t pos = win->cursor.pos;
- for (Line *cur = win->topline; cur && cur != line; cur = cur->next)
+ size_t pos = view->cursor.pos;
+ for (Line *cur = view->topline; cur && cur != line; cur = cur->next)
linenr++;
- window_slide_down(win, win->height - linenr - 1);
- window_cursor_to(win, pos);
+ view_slide_down(view, view->height - linenr - 1);
+ view_cursor_to(view, pos);
}
-size_t window_slide_up(Win *win, int lines) {
- Cursor *cursor = &win->cursor;
- if (window_viewport_down(win, lines)) {
- if (cursor->line == win->topline)
- window_cursor_set(win, win->topline, cursor->col);
+size_t view_slide_up(View *view, int lines) {
+ Cursor *cursor = &view->cursor;
+ if (view_viewport_down(view, lines)) {
+ if (cursor->line == view->topline)
+ view_cursor_set(view, view->topline, cursor->col);
else
- window_cursor_to(win, cursor->pos);
+ view_cursor_to(view, cursor->pos);
} else {
- window_screenline_down(win);
+ view_screenline_down(view);
}
return cursor->pos;
}
-size_t window_slide_down(Win *win, int lines) {
- Cursor *cursor = &win->cursor;
- if (window_viewport_up(win, lines)) {
- if (cursor->line == win->lastline)
- window_cursor_set(win, win->lastline, cursor->col);
+size_t view_slide_down(View *view, int lines) {
+ Cursor *cursor = &view->cursor;
+ if (view_viewport_up(view, lines)) {
+ if (cursor->line == view->lastline)
+ view_cursor_set(view, view->lastline, cursor->col);
else
- window_cursor_to(win, cursor->pos);
+ view_cursor_to(view, cursor->pos);
} else {
- window_screenline_up(win);
+ view_screenline_up(view);
}
return cursor->pos;
}
-size_t window_scroll_up(Win *win, int lines) {
- Cursor *cursor = &win->cursor;
- if (window_viewport_up(win, lines)) {
- Line *line = cursor->line < win->lastline ? cursor->line : win->lastline;
- window_cursor_set(win, line, win->cursor.col);
+size_t view_scroll_up(View *view, int lines) {
+ Cursor *cursor = &view->cursor;
+ if (view_viewport_up(view, lines)) {
+ Line *line = cursor->line < view->lastline ? cursor->line : view->lastline;
+ view_cursor_set(view, line, view->cursor.col);
} else {
- window_cursor_to(win, 0);
+ view_cursor_to(view, 0);
}
return cursor->pos;
}
-size_t window_scroll_down(Win *win, int lines) {
- Cursor *cursor = &win->cursor;
- if (window_viewport_down(win, lines)) {
- Line *line = cursor->line > win->topline ? cursor->line : win->topline;
- window_cursor_set(win, line, cursor->col);
+size_t view_scroll_down(View *view, int lines) {
+ Cursor *cursor = &view->cursor;
+ if (view_viewport_down(view, lines)) {
+ Line *line = cursor->line > view->topline ? cursor->line : view->topline;
+ view_cursor_set(view, line, cursor->col);
} else {
- window_cursor_to(win, text_size(win->text));
+ view_cursor_to(view, text_size(view->text));
}
return cursor->pos;
}
-size_t window_line_up(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_line_up(View *view) {
+ Cursor *cursor = &view->cursor;
if (cursor->line->prev && cursor->line->prev->prev &&
cursor->line->lineno != cursor->line->prev->lineno &&
cursor->line->prev->lineno != cursor->line->prev->prev->lineno)
- return window_screenline_up(win);
- size_t bol = text_line_begin(win->text, cursor->pos);
- size_t prev = text_line_prev(win->text, bol);
- size_t pos = text_line_offset(win->text, prev, cursor->pos - bol);
- window_cursor_to(win, pos);
+ return view_screenline_up(view);
+ size_t bol = text_line_begin(view->text, cursor->pos);
+ size_t prev = text_line_prev(view->text, bol);
+ size_t pos = text_line_offset(view->text, prev, cursor->pos - bol);
+ view_cursor_to(view, pos);
return cursor->pos;
}
-size_t window_line_down(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_line_down(View *view) {
+ Cursor *cursor = &view->cursor;
if (!cursor->line->next || cursor->line->next->lineno != cursor->line->lineno)
- return window_screenline_down(win);
- size_t bol = text_line_begin(win->text, cursor->pos);
- size_t next = text_line_next(win->text, bol);
- size_t pos = text_line_offset(win->text, next, cursor->pos - bol);
- window_cursor_to(win, pos);
+ return view_screenline_down(view);
+ size_t bol = text_line_begin(view->text, cursor->pos);
+ size_t next = text_line_next(view->text, bol);
+ size_t pos = text_line_offset(view->text, next, cursor->pos - bol);
+ view_cursor_to(view, pos);
return cursor->pos;
}
-size_t window_screenline_up(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_screenline_up(View *view) {
+ Cursor *cursor = &view->cursor;
int lastcol = cursor->lastcol;
if (!lastcol)
lastcol = cursor->col;
if (!cursor->line->prev)
- window_scroll_up(win, 1);
+ view_scroll_up(view, 1);
if (cursor->line->prev)
- window_cursor_set(win, cursor->line->prev, lastcol);
+ view_cursor_set(view, cursor->line->prev, lastcol);
cursor->lastcol = lastcol;
return cursor->pos;
}
-size_t window_screenline_down(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_screenline_down(View *view) {
+ Cursor *cursor = &view->cursor;
int lastcol = cursor->lastcol;
if (!lastcol)
lastcol = cursor->col;
- if (!cursor->line->next && cursor->line == win->bottomline)
- window_scroll_down(win, 1);
+ if (!cursor->line->next && cursor->line == view->bottomline)
+ view_scroll_down(view, 1);
if (cursor->line->next)
- window_cursor_set(win, cursor->line->next, lastcol);
+ view_cursor_set(view, cursor->line->next, lastcol);
cursor->lastcol = lastcol;
return cursor->pos;
}
-size_t window_screenline_begin(Win *win) {
- return window_cursor_set(win, win->cursor.line, 0);
+size_t view_screenline_begin(View *view) {
+ return view_cursor_set(view, view->cursor.line, 0);
}
-size_t window_screenline_middle(Win *win) {
- Cursor *cursor = &win->cursor;
- return window_cursor_set(win, cursor->line, cursor->line->width / 2);
+size_t view_screenline_middle(View *view) {
+ Cursor *cursor = &view->cursor;
+ return view_cursor_set(view, cursor->line, cursor->line->width / 2);
}
-size_t window_screenline_end(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_screenline_end(View *view) {
+ Cursor *cursor = &view->cursor;
int col = cursor->line->width - 1;
- return window_cursor_set(win, cursor->line, col >= 0 ? col : 0);
+ return view_cursor_set(view, cursor->line, col >= 0 ? col : 0);
}
-size_t window_delete_key(Win *win) {
- Cursor *cursor = &win->cursor;
+size_t view_delete_key(View *view) {
+ Cursor *cursor = &view->cursor;
Line *line = cursor->line;
size_t len = line->cells[cursor->col].len;
- text_delete(win->text, cursor->pos, len);
- window_draw(win);
- window_cursor_to(win, cursor->pos);
+ text_delete(view->text, cursor->pos, len);
+ view_draw(view);
+ view_cursor_to(view, cursor->pos);
return cursor->pos;
}
-size_t window_backspace_key(Win *win) {
- Cursor *cursor = &win->cursor;
- if (win->start == cursor->pos) {
- if (win->start == 0)
+size_t view_backspace_key(View *view) {
+ Cursor *cursor = &view->cursor;
+ if (view->start == cursor->pos) {
+ if (view->start == 0)
return cursor->pos;
- /* if we are on the top left most position in the window
+ /* if we are on the top left most position in the view
* first scroll up so that the to be deleted character is
* visible then proceed as normal */
size_t pos = cursor->pos;
- window_viewport_up(win, 1);
- window_cursor_to(win, pos);
+ view_viewport_up(view, 1);
+ view_cursor_to(view, pos);
}
- window_char_prev(win);
+ view_char_prev(view);
size_t pos = cursor->pos;
size_t len = cursor->line->cells[cursor->col].len;
- text_delete(win->text, pos, len);
- window_draw(win);
- window_cursor_to(win, pos);
+ text_delete(view->text, pos, len);
+ view_draw(view);
+ view_cursor_to(view, pos);
return pos;
}
-size_t window_insert_key(Win *win, const char *c, size_t len) {
- size_t pos = win->cursor.pos;
- text_insert(win->text, pos, c, len);
- if (win->cursor.line == win->bottomline && memchr(c, '\n', len))
- window_viewport_down(win, 1);
+size_t view_insert_key(View *view, const char *c, size_t len) {
+ size_t pos = view->cursor.pos;
+ text_insert(view->text, pos, c, len);
+ if (view->cursor.line == view->bottomline && memchr(c, '\n', len))
+ view_viewport_down(view, 1);
else
- window_draw(win);
+ view_draw(view);
pos += len;
- window_cursor_to(win, pos);
+ view_cursor_to(view, pos);
return pos;
}
-size_t window_replace_key(Win *win, const char *c, size_t len) {
- Cursor *cursor = &win->cursor;
+size_t view_replace_key(View *view, const char *c, size_t len) {
+ Cursor *cursor = &view->cursor;
Line *line = cursor->line;
size_t pos = cursor->pos;
/* do not overwrite new line which would merge the two lines */
if (line->cells[cursor->col].data[0] != '\n') {
size_t oldlen = line->cells[cursor->col].len;
- text_delete(win->text, pos, oldlen);
+ text_delete(view->text, pos, oldlen);
}
- text_insert(win->text, pos, c, len);
- if (cursor->line == win->bottomline && memchr(c, '\n', len))
- window_viewport_down(win, 1);
+ text_insert(view->text, pos, c, len);
+ if (cursor->line == view->bottomline && memchr(c, '\n', len))
+ view_viewport_down(view, 1);
else
- window_draw(win);
+ view_draw(view);
pos += len;
- window_cursor_to(win, pos);
+ view_cursor_to(view, pos);
return pos;
}
-size_t window_cursor_get(Win *win) {
- return win->cursor.pos;
+size_t view_cursor_get(View *view) {
+ return view->cursor.pos;
}
-const Line *window_lines_get(Win *win) {
- return win->topline;
+const Line *view_lines_get(View *view) {
+ return view->topline;
}
-void window_scroll_to(Win *win, size_t pos) {
- while (pos < win->start && window_viewport_up(win, 1));
- while (pos > win->end && window_viewport_down(win, 1));
- window_cursor_to(win, pos);
+void view_scroll_to(View *view, size_t pos) {
+ while (pos < view->start && view_viewport_up(view, 1));
+ while (pos > view->end && view_viewport_down(view, 1));
+ view_cursor_to(view, pos);
}
-void window_selection_start(Win *win) {
- if (win->sel.start != EPOS && win->sel.end != EPOS)
+void view_selection_start(View *view) {
+ if (view->sel.start != EPOS && view->sel.end != EPOS)
return;
- size_t pos = window_cursor_get(win);
- win->sel.start = win->sel.end = pos;
- window_draw(win);
- window_cursor_to(win, pos);
+ size_t pos = view_cursor_get(view);
+ view->sel.start = view->sel.end = pos;
+ view_draw(view);
+ view_cursor_to(view, pos);
}
-void window_syntax_set(Win *win, Syntax *syntax) {
- win->syntax = syntax;
+void view_syntax_set(View *view, Syntax *syntax) {
+ view->syntax = syntax;
}
-Syntax *window_syntax_get(Win *win) {
- return win->syntax;
+Syntax *view_syntax_get(View *view) {
+ return view->syntax;
}
-size_t window_screenline_goto(Win *win, int n) {
- size_t pos = win->start;
- for (Line *line = win->topline; --n > 0 && line != win->lastline; line = line->next)
+size_t view_screenline_goto(View *view, int n) {
+ size_t pos = view->start;
+ for (Line *line = view->topline; --n > 0 && line != view->lastline; line = line->next)
pos += line->len;
return pos;
}