Mercurial > vim
view src/libvterm/src/screen.c @ 22665:dd711a44e75b v8.2.1881
patch 8.2.1881: cannot build with GTK3
Commit: https://github.com/vim/vim/commit/692d1a51e74fea2db3c7e9ae7c7c6c3a1a1945ee
Author: Bram Moolenaar <Bram@vim.org>
Date: Wed Oct 21 17:28:27 2020 +0200
patch 8.2.1881: cannot build with GTK3
Problem: Cannot build with GTK3.
Solution: Adjust form functions.
author | Bram Moolenaar <Bram@vim.org> |
---|---|
date | Wed, 21 Oct 2020 17:30:04 +0200 |
parents | 66618893eb2a |
children | 2d2758ffd959 |
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 conceal : 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; 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 void clearcell(const VTermScreen *screen, ScreenCell *cell) { cell->chars[0] = 0; cell->pen = screen->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 *alloc_buffer(VTermScreen *screen, int rows, int cols) { ScreenCell *new_buffer = vterm_allocator_malloc(screen->vt, sizeof(ScreenCell) * rows * cols); int row; int col; for(row = 0; row < rows; row++) { for(col = 0; col < cols; col++) { clearcell(screen, &new_buffer[row * cols + col]); } } 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++) { ScreenCell *onecell = getcell(screen, pos.row, pos.col + col); if (onecell == NULL) break; onecell->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 void sb_pushline_from_row(VTermScreen *screen, int row) { VTermPos pos; pos.row = row; for(pos.col = 0; pos.col < screen->cols; pos.col++) vterm_screen_get_cell(screen, pos, screen->sb_buffer + pos.col); (screen->callbacks->sb_pushline)(screen->cols, screen->sb_buffer, screen->cbdata); } 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[BUFIDX_PRIMARY]) { // not altscreen int row; for(row = 0; row < src.start_row; row++) sb_pushline_from_row(screen, row); } { 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 (cell == NULL) { DEBUG_LOG2("libvterm: erase_internal() position invalid: %d / %d", row, col); return 1; } 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_CONCEAL: screen->pen.conceal = 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[BUFIDX_ALTSCREEN]) return 0; screen->buffer = val->boolean ? screen->buffers[BUFIDX_ALTSCREEN] : screen->buffers[BUFIDX_PRIMARY]; /* 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 void resize_buffer(VTermScreen *screen, int bufidx, int new_rows, int new_cols, int active, VTermStateFields *statefields) { int old_rows = screen->rows; int old_cols = screen->cols; ScreenCell *old_buffer = screen->buffers[bufidx]; ScreenCell *new_buffer = vterm_allocator_malloc(screen->vt, sizeof(ScreenCell) * new_rows * new_cols); // Find the final row of old buffer content int old_row = old_rows - 1; int new_row = new_rows - 1; int col; while(new_row >= 0 && old_row >= 0) { for(col = 0; col < old_cols && col < new_cols; col++) new_buffer[new_row * new_cols + col] = old_buffer[old_row * old_cols + col]; for( ; col < new_cols; col++) clearcell(screen, &new_buffer[new_row * new_cols + col]); old_row--; new_row--; if(new_row < 0 && old_row >= 0 && new_buffer[(new_rows - 1) * new_cols].chars[0] == 0 && (!active || statefields->pos.row < (new_rows - 1))) { int moverows = new_rows - 1; memmove(&new_buffer[1 * new_cols], &new_buffer[0], moverows * new_cols * sizeof(ScreenCell)); new_row++; } } if(old_row >= 0 && bufidx == BUFIDX_PRIMARY) { /* Push spare lines to scrollback buffer */ int row; for(row = 0; row <= old_row; row++) sb_pushline_from_row(screen, row); if(active) statefields->pos.row -= (old_row + 1); } if(new_row >= 0 && bufidx == BUFIDX_PRIMARY && screen->callbacks && screen->callbacks->sb_popline) { /* Try to backfill rows by popping scrollback buffer */ while(new_row >= 0) { VTermPos pos; if(!(screen->callbacks->sb_popline(old_cols, screen->sb_buffer, screen->cbdata))) break; pos.row = new_row; for(pos.col = 0; pos.col < old_cols && pos.col < new_cols; pos.col += screen->sb_buffer[pos.col].width) { VTermScreenCell *src = &screen->sb_buffer[pos.col]; ScreenCell *dst = &new_buffer[pos.row * new_cols + pos.col]; int i; for(i = 0; i < VTERM_MAX_CHARS_PER_CELL; i++) { dst->chars[i] = src->chars[i]; if(!src->chars[i]) break; } dst->pen.bold = src->attrs.bold; dst->pen.underline = src->attrs.underline; dst->pen.italic = src->attrs.italic; dst->pen.blink = src->attrs.blink; dst->pen.reverse = src->attrs.reverse ^ screen->global_reverse; dst->pen.conceal = src->attrs.conceal; dst->pen.strike = src->attrs.strike; dst->pen.font = src->attrs.font; dst->pen.fg = src->fg; dst->pen.bg = src->bg; if(src->width == 2 && pos.col < (new_cols-1)) (dst + 1)->chars[0] = (uint32_t) -1; } for( ; pos.col < new_cols; pos.col++) clearcell(screen, &new_buffer[pos.row * new_cols + pos.col]); new_row--; if(active) statefields->pos.row++; } } if(new_row >= 0) { /* Scroll new rows back up to the top and fill in blanks at the bottom */ int moverows = new_rows - new_row - 1; memmove(&new_buffer[0], &new_buffer[(new_row + 1) * new_cols], moverows * new_cols * sizeof(ScreenCell)); for(new_row = moverows; new_row < new_rows; new_row++) for(col = 0; col < new_cols; col++) clearcell(screen, &new_buffer[new_row * new_cols + col]); } vterm_allocator_free(screen->vt, old_buffer); screen->buffers[bufidx] = new_buffer; return; /* REFLOW TODO: * Handle delta. Probably needs to be a full cursorpos that we edit */ } static int resize(int new_rows, int new_cols, VTermStateFields *fields, void *user) { VTermScreen *screen = user; int altscreen_active = (screen->buffers[BUFIDX_ALTSCREEN] && screen->buffer == screen->buffers[BUFIDX_ALTSCREEN]); int old_cols = screen->cols; if(new_cols > old_cols) { /* Ensure that ->sb_buffer is large enough for a new or and old row */ if(screen->sb_buffer) vterm_allocator_free(screen->vt, screen->sb_buffer); screen->sb_buffer = vterm_allocator_malloc(screen->vt, sizeof(VTermScreenCell) * new_cols); } resize_buffer(screen, 0, new_rows, new_cols, !altscreen_active, fields); if(screen->buffers[BUFIDX_ALTSCREEN]) resize_buffer(screen, 1, new_rows, new_cols, altscreen_active, fields); screen->buffer = altscreen_active ? screen->buffers[BUFIDX_ALTSCREEN] : screen->buffers[BUFIDX_PRIMARY]; screen->rows = new_rows; screen->cols = new_cols; if(new_cols <= old_cols) { if(screen->sb_buffer) vterm_allocator_free(screen->vt, screen->sb_buffer); screen->sb_buffer = vterm_allocator_malloc(screen->vt, sizeof(VTermScreenCell) * new_cols); } /* TODO: Maaaaybe we can optimise this if there's no reflow happening */ damagescreen(screen); 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); if (cell == NULL) { DEBUG_LOG2("libvterm: setlineinfo() position invalid: %d / %d", row, col); return 1; } 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[BUFIDX_PRIMARY] = alloc_buffer(screen, rows, cols); screen->buffer = screen->buffers[BUFIDX_PRIMARY]; 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[BUFIDX_PRIMARY]); if(screen->buffers[BUFIDX_ALTSCREEN]) vterm_allocator_free(screen->vt, screen->buffers[BUFIDX_ALTSCREEN]); 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 == NULL) { DEBUG_LOG2("libvterm: _get_chars() position invalid: %d / %d", row, col); return 1; } 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 < VTERM_MAX_CHARS_PER_CELL; 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.conceal = intcell->pen.conceal; 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; } 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[BUFIDX_ALTSCREEN] && altscreen) { int rows, cols; vterm_get_size(screen->vt, &rows, &cols); screen->buffers[BUFIDX_ALTSCREEN] = alloc_buffer(screen, 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 VTermStateFallbacks *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_CONCEAL_MASK) && (a->pen.conceal != b->pen.conceal)) 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_is_equal(&a->pen.fg, &b->pen.fg)) return 1; if((attrs & VTERM_ATTR_BACKGROUND_MASK) && !vterm_color_is_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; } void vterm_screen_convert_color_to_rgb(const VTermScreen *screen, VTermColor *col) { vterm_state_convert_color_to_rgb(screen->state, col); }