Mercurial > vim
view src/libvterm/src/screen.c @ 18802:3be01cf0a632 v8.1.2389
patch 8.1.2389: using old C style comments
Commit: https://github.com/vim/vim/commit/707d226ac58da752ecc6b7620055fb1df3957a27
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Dec 4 22:16:54 2019 +0100
patch 8.1.2389: using old C style comments
Problem: Using old C style comments.
Solution: Use // comments where appropriate.
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Wed, 04 Dec 2019 22:30:07 +0100 |
parents | da6a7491e148 |
children | 3bd0d7cfddc9 |
line wrap: on
line source
#include "vterm_internal.h" // vim: set sw=2 : #include <stdio.h> #include <string.h> #include "rect.h" #include "utf8.h" #define UNICODE_SPACE 0x20 #define UNICODE_LINEFEED 0x0a // State of the pen at some moment in time, also used in a cell typedef struct { // After the bitfield VTermColor fg, bg; unsigned int bold : 1; unsigned int underline : 2; unsigned int italic : 1; unsigned int blink : 1; unsigned int reverse : 1; unsigned int strike : 1; unsigned int font : 4; // 0 to 9 // Extra state storage that isn't strictly pen-related unsigned int protected_cell : 1; unsigned int dwl : 1; // on a DECDWL or DECDHL line unsigned int dhl : 2; // on a DECDHL line (1=top 2=bottom) } ScreenPen; // Internal representation of a screen cell typedef struct { uint32_t chars[VTERM_MAX_CHARS_PER_CELL]; ScreenPen pen; } ScreenCell; static int vterm_screen_set_cell(VTermScreen *screen, VTermPos pos, const VTermScreenCell *cell); struct VTermScreen { VTerm *vt; VTermState *state; const VTermScreenCallbacks *callbacks; void *cbdata; VTermDamageSize damage_merge; // start_row == -1 => no damage VTermRect damaged; VTermRect pending_scrollrect; int pending_scroll_downward, pending_scroll_rightward; int rows; int cols; int global_reverse; // Primary and Altscreen. buffers[1] is lazily allocated as needed ScreenCell *buffers[2]; // buffer will == buffers[0] or buffers[1], depending on altscreen ScreenCell *buffer; // buffer for a single screen row used in scrollback storage callbacks VTermScreenCell *sb_buffer; ScreenPen pen; }; static ScreenCell *getcell(const VTermScreen *screen, int row, int col) { if(row < 0 || row >= screen->rows) return NULL; if(col < 0 || col >= screen->cols) return NULL; if (screen->buffer == NULL) return NULL; return screen->buffer + (screen->cols * row) + col; } static ScreenCell *realloc_buffer(VTermScreen *screen, ScreenCell *buffer, int new_rows, int new_cols) { ScreenCell *new_buffer = vterm_allocator_malloc(screen->vt, sizeof(ScreenCell) * new_rows * new_cols); int row, col; if (new_buffer == NULL) return NULL; for(row = 0; row < new_rows; row++) { for(col = 0; col < new_cols; col++) { ScreenCell *new_cell = new_buffer + row*new_cols + col; if(buffer && row < screen->rows && col < screen->cols) *new_cell = buffer[row * screen->cols + col]; else { new_cell->chars[0] = 0; new_cell->pen = screen->pen; } } } vterm_allocator_free(screen->vt, buffer); return new_buffer; } static void damagerect(VTermScreen *screen, VTermRect rect) { VTermRect emit; switch(screen->damage_merge) { case VTERM_DAMAGE_CELL: // Always emit damage event emit = rect; break; case VTERM_DAMAGE_ROW: // Emit damage longer than one row. Try to merge with existing damage in // the same row if(rect.end_row > rect.start_row + 1) { // Bigger than 1 line - flush existing, emit this vterm_screen_flush_damage(screen); emit = rect; } else if(screen->damaged.start_row == -1) { // None stored yet screen->damaged = rect; return; } else if(rect.start_row == screen->damaged.start_row) { // Merge with the stored line if(screen->damaged.start_col > rect.start_col) screen->damaged.start_col = rect.start_col; if(screen->damaged.end_col < rect.end_col) screen->damaged.end_col = rect.end_col; return; } else { // Emit the currently stored line, store a new one emit = screen->damaged; screen->damaged = rect; } break; case VTERM_DAMAGE_SCREEN: case VTERM_DAMAGE_SCROLL: // Never emit damage event if(screen->damaged.start_row == -1) screen->damaged = rect; else { rect_expand(&screen->damaged, &rect); } return; default: DEBUG_LOG1("TODO: Maybe merge damage for level %d\n", screen->damage_merge); return; } if(screen->callbacks && screen->callbacks->damage) (*screen->callbacks->damage)(emit, screen->cbdata); } static void damagescreen(VTermScreen *screen) { VTermRect rect = {0,0,0,0}; rect.end_row = screen->rows; rect.end_col = screen->cols; damagerect(screen, rect); } static int putglyph(VTermGlyphInfo *info, VTermPos pos, void *user) { int i; int col; VTermRect rect; VTermScreen *screen = user; ScreenCell *cell = getcell(screen, pos.row, pos.col); if(!cell) return 0; for(i = 0; i < VTERM_MAX_CHARS_PER_CELL && info->chars[i]; i++) { cell->chars[i] = info->chars[i]; cell->pen = screen->pen; } if(i < VTERM_MAX_CHARS_PER_CELL) cell->chars[i] = 0; for(col = 1; col < info->width; col++) getcell(screen, pos.row, pos.col + col)->chars[0] = (uint32_t)-1; rect.start_row = pos.row; rect.end_row = pos.row+1; rect.start_col = pos.col; rect.end_col = pos.col+info->width; cell->pen.protected_cell = info->protected_cell; cell->pen.dwl = info->dwl; cell->pen.dhl = info->dhl; damagerect(screen, rect); return 1; } static int moverect_internal(VTermRect dest, VTermRect src, void *user) { VTermScreen *screen = user; if(screen->callbacks && screen->callbacks->sb_pushline && dest.start_row == 0 && dest.start_col == 0 && // starts top-left corner dest.end_col == screen->cols && // full width screen->buffer == screen->buffers[0]) { // not altscreen VTermPos pos; for(pos.row = 0; pos.row < src.start_row; pos.row++) { for(pos.col = 0; pos.col < screen->cols; pos.col++) (void)vterm_screen_get_cell(screen, pos, screen->sb_buffer + pos.col); (screen->callbacks->sb_pushline)(screen->cols, screen->sb_buffer, screen->cbdata); } } { int cols = src.end_col - src.start_col; int downward = src.start_row - dest.start_row; int init_row, test_row, inc_row; int row; if(downward < 0) { init_row = dest.end_row - 1; test_row = dest.start_row - 1; inc_row = -1; } else { init_row = dest.start_row; test_row = dest.end_row; inc_row = +1; } for(row = init_row; row != test_row; row += inc_row) memmove(getcell(screen, row, dest.start_col), getcell(screen, row + downward, src.start_col), cols * sizeof(ScreenCell)); } return 1; } static int moverect_user(VTermRect dest, VTermRect src, void *user) { VTermScreen *screen = user; if(screen->callbacks && screen->callbacks->moverect) { if(screen->damage_merge != VTERM_DAMAGE_SCROLL) // Avoid an infinite loop vterm_screen_flush_damage(screen); if((*screen->callbacks->moverect)(dest, src, screen->cbdata)) return 1; } damagerect(screen, dest); return 1; } static int erase_internal(VTermRect rect, int selective, void *user) { VTermScreen *screen = user; int row, col; for(row = rect.start_row; row < screen->state->rows && row < rect.end_row; row++) { const VTermLineInfo *info = vterm_state_get_lineinfo(screen->state, row); for(col = rect.start_col; col < rect.end_col; col++) { ScreenCell *cell = getcell(screen, row, col); if(selective && cell->pen.protected_cell) continue; cell->chars[0] = 0; cell->pen = screen->pen; cell->pen.dwl = info->doublewidth; cell->pen.dhl = info->doubleheight; } } return 1; } static int erase_user(VTermRect rect, int selective UNUSED, void *user) { VTermScreen *screen = user; damagerect(screen, rect); return 1; } static int erase(VTermRect rect, int selective, void *user) { erase_internal(rect, selective, user); return erase_user(rect, 0, user); } static int scrollrect(VTermRect rect, int downward, int rightward, void *user) { VTermScreen *screen = user; if(screen->damage_merge != VTERM_DAMAGE_SCROLL) { vterm_scroll_rect(rect, downward, rightward, moverect_internal, erase_internal, screen); vterm_screen_flush_damage(screen); vterm_scroll_rect(rect, downward, rightward, moverect_user, erase_user, screen); return 1; } if(screen->damaged.start_row != -1 && !rect_intersects(&rect, &screen->damaged)) { vterm_screen_flush_damage(screen); } if(screen->pending_scrollrect.start_row == -1) { screen->pending_scrollrect = rect; screen->pending_scroll_downward = downward; screen->pending_scroll_rightward = rightward; } else if(rect_equal(&screen->pending_scrollrect, &rect) && ((screen->pending_scroll_downward == 0 && downward == 0) || (screen->pending_scroll_rightward == 0 && rightward == 0))) { screen->pending_scroll_downward += downward; screen->pending_scroll_rightward += rightward; } else { vterm_screen_flush_damage(screen); screen->pending_scrollrect = rect; screen->pending_scroll_downward = downward; screen->pending_scroll_rightward = rightward; } vterm_scroll_rect(rect, downward, rightward, moverect_internal, erase_internal, screen); if(screen->damaged.start_row == -1) return 1; if(rect_contains(&rect, &screen->damaged)) { // Scroll region entirely contains the damage; just move it vterm_rect_move(&screen->damaged, -downward, -rightward); rect_clip(&screen->damaged, &rect); } // There are a number of possible cases here, but lets restrict this to only // the common case where we might actually gain some performance by // optimising it. Namely, a vertical scroll that neatly cuts the damage // region in half. else if(rect.start_col <= screen->damaged.start_col && rect.end_col >= screen->damaged.end_col && rightward == 0) { if(screen->damaged.start_row >= rect.start_row && screen->damaged.start_row < rect.end_row) { screen->damaged.start_row -= downward; if(screen->damaged.start_row < rect.start_row) screen->damaged.start_row = rect.start_row; if(screen->damaged.start_row > rect.end_row) screen->damaged.start_row = rect.end_row; } if(screen->damaged.end_row >= rect.start_row && screen->damaged.end_row < rect.end_row) { screen->damaged.end_row -= downward; if(screen->damaged.end_row < rect.start_row) screen->damaged.end_row = rect.start_row; if(screen->damaged.end_row > rect.end_row) screen->damaged.end_row = rect.end_row; } } else { DEBUG_LOG2("TODO: Just flush and redo damaged=" STRFrect " rect=" STRFrect "\n", ARGSrect(screen->damaged), ARGSrect(rect)); } return 1; } static int movecursor(VTermPos pos, VTermPos oldpos, int visible, void *user) { VTermScreen *screen = user; if(screen->callbacks && screen->callbacks->movecursor) return (*screen->callbacks->movecursor)(pos, oldpos, visible, screen->cbdata); return 0; } static int setpenattr(VTermAttr attr, VTermValue *val, void *user) { VTermScreen *screen = user; switch(attr) { case VTERM_ATTR_BOLD: screen->pen.bold = val->boolean; return 1; case VTERM_ATTR_UNDERLINE: screen->pen.underline = val->number; return 1; case VTERM_ATTR_ITALIC: screen->pen.italic = val->boolean; return 1; case VTERM_ATTR_BLINK: screen->pen.blink = val->boolean; return 1; case VTERM_ATTR_REVERSE: screen->pen.reverse = val->boolean; return 1; case VTERM_ATTR_STRIKE: screen->pen.strike = val->boolean; return 1; case VTERM_ATTR_FONT: screen->pen.font = val->number; return 1; case VTERM_ATTR_FOREGROUND: screen->pen.fg = val->color; return 1; case VTERM_ATTR_BACKGROUND: screen->pen.bg = val->color; return 1; case VTERM_N_ATTRS: return 0; } return 0; } static int settermprop(VTermProp prop, VTermValue *val, void *user) { VTermScreen *screen = user; switch(prop) { case VTERM_PROP_ALTSCREEN: if(val->boolean && !screen->buffers[1]) return 0; screen->buffer = val->boolean ? screen->buffers[1] : screen->buffers[0]; // only send a damage event on disable; because during enable there's an // erase that sends a damage anyway if(!val->boolean) damagescreen(screen); break; case VTERM_PROP_REVERSE: screen->global_reverse = val->boolean; damagescreen(screen); break; default: ; // ignore } if(screen->callbacks && screen->callbacks->settermprop) return (*screen->callbacks->settermprop)(prop, val, screen->cbdata); return 1; } static int bell(void *user) { VTermScreen *screen = user; if(screen->callbacks && screen->callbacks->bell) return (*screen->callbacks->bell)(screen->cbdata); return 0; } static int resize(int new_rows, int new_cols, VTermPos *delta, void *user) { VTermScreen *screen = user; int is_altscreen = (screen->buffers[1] && screen->buffer == screen->buffers[1]); int old_rows = screen->rows; int old_cols = screen->cols; int first_blank_row; if(!is_altscreen && new_rows < old_rows) { // Fewer rows - determine if we're going to scroll at all, and if so, push // those lines to scrollback VTermPos pos = { 0, 0 }; VTermPos cursor = screen->state->pos; // Find the first blank row after the cursor. for(pos.row = old_rows - 1; pos.row >= new_rows; pos.row--) if(!vterm_screen_is_eol(screen, pos) || cursor.row == pos.row) break; first_blank_row = pos.row + 1; if(first_blank_row > new_rows) { VTermRect rect = {0,0,0,0}; rect.end_row = old_rows; rect.end_col = old_cols; scrollrect(rect, first_blank_row - new_rows, 0, user); vterm_screen_flush_damage(screen); delta->row -= first_blank_row - new_rows; } } screen->buffers[0] = realloc_buffer(screen, screen->buffers[0], new_rows, new_cols); if(screen->buffers[1]) screen->buffers[1] = realloc_buffer(screen, screen->buffers[1], new_rows, new_cols); screen->buffer = is_altscreen ? screen->buffers[1] : screen->buffers[0]; screen->rows = new_rows; screen->cols = new_cols; vterm_allocator_free(screen->vt, screen->sb_buffer); screen->sb_buffer = vterm_allocator_malloc(screen->vt, sizeof(VTermScreenCell) * new_cols); if(new_cols > old_cols) { VTermRect rect; rect.start_row = 0; rect.end_row = old_rows; rect.start_col = old_cols; rect.end_col = new_cols; damagerect(screen, rect); } if(new_rows > old_rows) { if(!is_altscreen && screen->callbacks && screen->callbacks->sb_popline) { int rows = new_rows - old_rows; while(rows) { VTermRect rect = {0,0,0,0}; VTermPos pos = { 0, 0 }; if(!(screen->callbacks->sb_popline(screen->cols, screen->sb_buffer, screen->cbdata))) break; rect.end_row = screen->rows; rect.end_col = screen->cols; scrollrect(rect, -1, 0, user); for(pos.col = 0; pos.col < screen->cols; pos.col += screen->sb_buffer[pos.col].width) vterm_screen_set_cell(screen, pos, screen->sb_buffer + pos.col); rect.end_row = 1; damagerect(screen, rect); vterm_screen_flush_damage(screen); rows--; delta->row++; } } { VTermRect rect; rect.start_row = old_rows; rect.end_row = new_rows; rect.start_col = 0; rect.end_col = new_cols; damagerect(screen, rect); } } if(screen->callbacks && screen->callbacks->resize) return (*screen->callbacks->resize)(new_rows, new_cols, screen->cbdata); return 1; } static int setlineinfo(int row, const VTermLineInfo *newinfo, const VTermLineInfo *oldinfo, void *user) { VTermScreen *screen = user; int col; VTermRect rect; if(newinfo->doublewidth != oldinfo->doublewidth || newinfo->doubleheight != oldinfo->doubleheight) { for(col = 0; col < screen->cols; col++) { ScreenCell *cell = getcell(screen, row, col); cell->pen.dwl = newinfo->doublewidth; cell->pen.dhl = newinfo->doubleheight; } rect.start_row = row; rect.end_row = row + 1; rect.start_col = 0; rect.end_col = newinfo->doublewidth ? screen->cols / 2 : screen->cols; damagerect(screen, rect); if(newinfo->doublewidth) { rect.start_col = screen->cols / 2; rect.end_col = screen->cols; erase_internal(rect, 0, user); } } return 1; } static VTermStateCallbacks state_cbs = { &putglyph, // putglyph &movecursor, // movecursor &scrollrect, // scrollrect NULL, // moverect &erase, // erase NULL, // initpen &setpenattr, // setpenattr &settermprop, // settermprop &bell, // bell &resize, // resize &setlineinfo // setlineinfo }; /* * Allocate a new screen and return it. * Return NULL when out of memory. */ static VTermScreen *screen_new(VTerm *vt) { VTermState *state = vterm_obtain_state(vt); VTermScreen *screen; int rows, cols; if (state == NULL) return NULL; screen = vterm_allocator_malloc(vt, sizeof(VTermScreen)); if (screen == NULL) return NULL; vterm_get_size(vt, &rows, &cols); screen->vt = vt; screen->state = state; screen->damage_merge = VTERM_DAMAGE_CELL; screen->damaged.start_row = -1; screen->pending_scrollrect.start_row = -1; screen->rows = rows; screen->cols = cols; screen->callbacks = NULL; screen->cbdata = NULL; screen->buffers[0] = realloc_buffer(screen, NULL, rows, cols); screen->buffer = screen->buffers[0]; screen->sb_buffer = vterm_allocator_malloc(screen->vt, sizeof(VTermScreenCell) * cols); if (screen->buffer == NULL || screen->sb_buffer == NULL) { vterm_screen_free(screen); return NULL; } vterm_state_set_callbacks(screen->state, &state_cbs, screen); return screen; } INTERNAL void vterm_screen_free(VTermScreen *screen) { vterm_allocator_free(screen->vt, screen->buffers[0]); vterm_allocator_free(screen->vt, screen->buffers[1]); vterm_allocator_free(screen->vt, screen->sb_buffer); vterm_allocator_free(screen->vt, screen); } void vterm_screen_reset(VTermScreen *screen, int hard) { screen->damaged.start_row = -1; screen->pending_scrollrect.start_row = -1; vterm_state_reset(screen->state, hard); vterm_screen_flush_damage(screen); } static size_t _get_chars(const VTermScreen *screen, const int utf8, void *buffer, size_t len, const VTermRect rect) { size_t outpos = 0; int padding = 0; int row, col; #define PUT(c) \ if(utf8) { \ size_t thislen = utf8_seqlen(c); \ if(buffer && outpos + thislen <= len) \ outpos += fill_utf8((c), (char *)buffer + outpos); \ else \ outpos += thislen; \ } \ else { \ if(buffer && outpos + 1 <= len) \ ((uint32_t*)buffer)[outpos++] = (c); \ else \ outpos++; \ } for(row = rect.start_row; row < rect.end_row; row++) { for(col = rect.start_col; col < rect.end_col; col++) { ScreenCell *cell = getcell(screen, row, col); int i; if(cell->chars[0] == 0) // Erased cell, might need a space padding++; else if(cell->chars[0] == (uint32_t)-1) // Gap behind a double-width char, do nothing ; else { while(padding) { PUT(UNICODE_SPACE); padding--; } for(i = 0; i < VTERM_MAX_CHARS_PER_CELL && cell->chars[i]; i++) { PUT(cell->chars[i]); } } } if(row < rect.end_row - 1) { PUT(UNICODE_LINEFEED); padding = 0; } } return outpos; } size_t vterm_screen_get_chars(const VTermScreen *screen, uint32_t *chars, size_t len, const VTermRect rect) { return _get_chars(screen, 0, chars, len, rect); } size_t vterm_screen_get_text(const VTermScreen *screen, char *str, size_t len, const VTermRect rect) { return _get_chars(screen, 1, str, len, rect); } // Copy internal to external representation of a screen cell int vterm_screen_get_cell(const VTermScreen *screen, VTermPos pos, VTermScreenCell *cell) { ScreenCell *intcell = getcell(screen, pos.row, pos.col); int i; if(!intcell) return 0; for(i = 0; ; i++) { cell->chars[i] = intcell->chars[i]; if(!intcell->chars[i]) break; } cell->attrs.bold = intcell->pen.bold; cell->attrs.underline = intcell->pen.underline; cell->attrs.italic = intcell->pen.italic; cell->attrs.blink = intcell->pen.blink; cell->attrs.reverse = intcell->pen.reverse ^ screen->global_reverse; cell->attrs.strike = intcell->pen.strike; cell->attrs.font = intcell->pen.font; cell->attrs.dwl = intcell->pen.dwl; cell->attrs.dhl = intcell->pen.dhl; cell->fg = intcell->pen.fg; cell->bg = intcell->pen.bg; if(vterm_get_special_pty_type() == 2) { // Get correct cell width from cell information contained in line buffer if(pos.col < (screen->cols - 1) && getcell(screen, pos.row, pos.col + 1)->chars[0] == (uint32_t)-1) { if(getcell(screen, pos.row, pos.col)->chars[0] == 0x20) { getcell(screen, pos.row, pos.col)->chars[0] = 0; cell->width = 2; } else if(getcell(screen, pos.row, pos.col)->chars[0] == 0) { getcell(screen, pos.row, pos.col + 1)->chars[0] = 0; cell->width = 1; } else { cell->width = 2; } } else cell->width = 1; } else { if(pos.col < (screen->cols - 1) && getcell(screen, pos.row, pos.col + 1)->chars[0] == (uint32_t)-1) cell->width = 2; else cell->width = 1; } return 1; } /* * Copy external to internal representation of a screen cell * static because it's only used internally for sb_popline during resize */ static int vterm_screen_set_cell(VTermScreen *screen, VTermPos pos, const VTermScreenCell *cell) { ScreenCell *intcell = getcell(screen, pos.row, pos.col); int i; if(!intcell) return 0; for(i = 0; ; i++) { intcell->chars[i] = cell->chars[i]; if(!cell->chars[i]) break; } intcell->pen.bold = cell->attrs.bold; intcell->pen.underline = cell->attrs.underline; intcell->pen.italic = cell->attrs.italic; intcell->pen.blink = cell->attrs.blink; intcell->pen.reverse = cell->attrs.reverse ^ screen->global_reverse; intcell->pen.strike = cell->attrs.strike; intcell->pen.font = cell->attrs.font; intcell->pen.fg = cell->fg; intcell->pen.bg = cell->bg; if(cell->width == 2) getcell(screen, pos.row, pos.col + 1)->chars[0] = (uint32_t)-1; return 1; } int vterm_screen_is_eol(const VTermScreen *screen, VTermPos pos) { // This cell is EOL if this and every cell to the right is black for(; pos.col < screen->cols; pos.col++) { ScreenCell *cell = getcell(screen, pos.row, pos.col); if(cell->chars[0] != 0) return 0; } return 1; } VTermScreen *vterm_obtain_screen(VTerm *vt) { if(!vt->screen) vt->screen = screen_new(vt); return vt->screen; } void vterm_screen_enable_altscreen(VTermScreen *screen, int altscreen) { if(!screen->buffers[1] && altscreen) { int rows, cols; vterm_get_size(screen->vt, &rows, &cols); screen->buffers[1] = realloc_buffer(screen, NULL, rows, cols); } } void vterm_screen_set_callbacks(VTermScreen *screen, const VTermScreenCallbacks *callbacks, void *user) { screen->callbacks = callbacks; screen->cbdata = user; } void *vterm_screen_get_cbdata(VTermScreen *screen) { return screen->cbdata; } void vterm_screen_set_unrecognised_fallbacks(VTermScreen *screen, const VTermParserCallbacks *fallbacks, void *user) { vterm_state_set_unrecognised_fallbacks(screen->state, fallbacks, user); } void *vterm_screen_get_unrecognised_fbdata(VTermScreen *screen) { return vterm_state_get_unrecognised_fbdata(screen->state); } void vterm_screen_flush_damage(VTermScreen *screen) { if(screen->pending_scrollrect.start_row != -1) { vterm_scroll_rect(screen->pending_scrollrect, screen->pending_scroll_downward, screen->pending_scroll_rightward, moverect_user, erase_user, screen); screen->pending_scrollrect.start_row = -1; } if(screen->damaged.start_row != -1) { if(screen->callbacks && screen->callbacks->damage) (*screen->callbacks->damage)(screen->damaged, screen->cbdata); screen->damaged.start_row = -1; } } void vterm_screen_set_damage_merge(VTermScreen *screen, VTermDamageSize size) { vterm_screen_flush_damage(screen); screen->damage_merge = size; } static int attrs_differ(VTermAttrMask attrs, ScreenCell *a, ScreenCell *b) { if((attrs & VTERM_ATTR_BOLD_MASK) && (a->pen.bold != b->pen.bold)) return 1; if((attrs & VTERM_ATTR_UNDERLINE_MASK) && (a->pen.underline != b->pen.underline)) return 1; if((attrs & VTERM_ATTR_ITALIC_MASK) && (a->pen.italic != b->pen.italic)) return 1; if((attrs & VTERM_ATTR_BLINK_MASK) && (a->pen.blink != b->pen.blink)) return 1; if((attrs & VTERM_ATTR_REVERSE_MASK) && (a->pen.reverse != b->pen.reverse)) return 1; if((attrs & VTERM_ATTR_STRIKE_MASK) && (a->pen.strike != b->pen.strike)) return 1; if((attrs & VTERM_ATTR_FONT_MASK) && (a->pen.font != b->pen.font)) return 1; if((attrs & VTERM_ATTR_FOREGROUND_MASK) && !vterm_color_equal(a->pen.fg, b->pen.fg)) return 1; if((attrs & VTERM_ATTR_BACKGROUND_MASK) && !vterm_color_equal(a->pen.bg, b->pen.bg)) return 1; return 0; } int vterm_screen_get_attrs_extent(const VTermScreen *screen, VTermRect *extent, VTermPos pos, VTermAttrMask attrs) { int col; ScreenCell *target = getcell(screen, pos.row, pos.col); // TODO: bounds check extent->start_row = pos.row; extent->end_row = pos.row + 1; if(extent->start_col < 0) extent->start_col = 0; if(extent->end_col < 0) extent->end_col = screen->cols; for(col = pos.col - 1; col >= extent->start_col; col--) if(attrs_differ(attrs, target, getcell(screen, pos.row, col))) break; extent->start_col = col + 1; for(col = pos.col + 1; col < extent->end_col; col++) if(attrs_differ(attrs, target, getcell(screen, pos.row, col))) break; extent->end_col = col - 1; return 1; }