diff options
Diffstat (limited to 'src/screen.c')
| -rw-r--r-- | src/screen.c | 936 |
1 files changed, 0 insertions, 936 deletions
diff --git a/src/screen.c b/src/screen.c deleted file mode 100644 index 1d4d86c..0000000 --- a/src/screen.c +++ /dev/null @@ -1,936 +0,0 @@ -#include "vterm_internal.h" - -#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 inline 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; - 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); - - for(int row = 0; row < new_rows; row++) { - for(int 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; - } - } - } - - if(buffer) - 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_LOG("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 = { - .start_row = 0, - .end_row = screen->rows, - .start_col = 0, - .end_col = screen->cols, - }; - - damagerect(screen, rect); -} - -static int putglyph(VTermGlyphInfo *info, VTermPos pos, void *user) -{ - VTermScreen *screen = user; - ScreenCell *cell = getcell(screen, pos.row, pos.col); - - if(!cell) - return 0; - - int i; - 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(int col = 1; col < info->width; col++) - getcell(screen, pos.row, pos.col + col)->chars[0] = (uint32_t)-1; - - VTermRect rect = { - .start_row = pos.row, - .end_row = pos.row+1, - .start_col = pos.col, - .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++) - 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; - 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(int 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; - - for(int row = rect.start_row; row < screen->state->rows && row < rect.end_row; row++) { - const VTermLineInfo *info = vterm_state_get_lineinfo(screen->state, row); - - for(int 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, 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_LOG("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; - - 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; - - int first_blank_row = pos.row + 1; - if(first_blank_row > new_rows) { - VTermRect rect = { - .start_row = 0, - .end_row = old_rows, - .start_col = 0, - .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; - - if(screen->sb_buffer) - 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 = { - .start_row = 0, - .end_row = old_rows, - .start_col = old_cols, - .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) { - if(!(screen->callbacks->sb_popline(screen->cols, screen->sb_buffer, screen->cbdata))) - break; - - VTermRect rect = { - .start_row = 0, - .end_row = screen->rows, - .start_col = 0, - .end_col = screen->cols, - }; - scrollrect(rect, -1, 0, user); - - VTermPos pos = { 0, 0 }; - 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 = { - .start_row = old_rows, - .end_row = new_rows, - .start_col = 0, - .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; - - if(newinfo->doublewidth != oldinfo->doublewidth || - newinfo->doubleheight != oldinfo->doubleheight) { - for(int col = 0; col < screen->cols; col++) { - ScreenCell *cell = getcell(screen, row, col); - cell->pen.dwl = newinfo->doublewidth; - cell->pen.dhl = newinfo->doubleheight; - } - - VTermRect rect = { - .start_row = row, - .end_row = row + 1, - .start_col = 0, - .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, - .erase = &erase, - .setpenattr = &setpenattr, - .settermprop = &settermprop, - .bell = &bell, - .resize = &resize, - .setlineinfo = &setlineinfo, -}; - -static VTermScreen *screen_new(VTerm *vt) -{ - VTermState *state = vterm_obtain_state(vt); - if(!state) - return NULL; - - VTermScreen *screen = vterm_allocator_malloc(vt, sizeof(VTermScreen)); - int rows, cols; - - 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); - - 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]); - if(screen->buffers[1]) - 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; - -#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(int row = rect.start_row; row < rect.end_row; row++) { - for(int col = rect.start_col; col < rect.end_col; col++) { - ScreenCell *cell = getcell(screen, row, col); - - 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(int 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); - if(!intcell) - return 0; - - for(int 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(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); - if(!intcell) - return 0; - - for(int 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) - return vt->screen; - - VTermScreen *screen = screen_new(vt); - vt->screen = screen; - - return 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_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) -{ - 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; - - int col; - - 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); -} |