libvterm/src/screen.c

6 #include "rect.h"
104 static void damagerect(VTermScreen *screen, VTermRect rect)
111     emit = rect;
117     if(rect.end_row > rect.start_row + 1) {
120       emit = rect;
124       screen->damaged = rect;
127     else if(rect.start_row == screen->damaged.start_row) {
129       if(screen->damaged.start_col > rect.start_col)
130         screen->damaged.start_col = rect.start_col;
131       if(screen->damaged.end_col < rect.end_col)
132         screen->damaged.end_col = rect.end_col;
138       screen->damaged = rect;
146       screen->damaged = rect;
148       rect_expand(&screen->damaged, &rect);
163   VTermRect rect = {
170   damagerect(screen, rect);
178   VTermRect rect;
193   rect.start_row = pos.row;
194   rect.end_row   = pos.row+1;
195   rect.start_col = pos.col;
196   rect.end_col   = pos.col+info->width;
202   damagerect(screen, rect);
266 static int erase_internal(VTermRect rect, int selective, void *user)
271   for(row = rect.start_row; row < rect.end_row; row++) {
274     for(col = rect.start_col; col < rect.end_col; col++) {
290 static int erase_user(VTermRect rect, int selective, void *user)
294   damagerect(screen, rect);
299 static int erase(VTermRect rect, int selective, void *user)
301   erase_internal(rect, selective, user);
302   return erase_user(rect, 0, user);
305 static int scrollrect(VTermRect rect, int downward, int rightward, void *user)
309   vterm_scroll_rect(rect, downward, rightward,
315     vterm_scroll_rect(rect, downward, rightward,
322      !rect_intersects(&rect, &screen->damaged)) {
327     screen->pending_scrollrect = rect;
331   else if(rect_equal(&screen->pending_scrollrect, &rect) &&
340     screen->pending_scrollrect = rect;
348   if(rect_contains(&rect, &screen->damaged)) {
350     rect_clip(&screen->damaged, &rect);
357   else if(rect.start_col <= screen->damaged.start_col &&
358           rect.end_col   >= screen->damaged.end_col &&
360     if(screen->damaged.start_row >= rect.start_row &&
361        screen->damaged.start_row  < rect.end_row) {
363       if(screen->damaged.start_row < rect.start_row)
364         screen->damaged.start_row = rect.start_row;
365       if(screen->damaged.start_row > rect.end_row)
366         screen->damaged.start_row = rect.end_row;
368     if(screen->damaged.end_row >= rect.start_row &&
369        screen->damaged.end_row  < rect.end_row) {
371       if(screen->damaged.end_row < rect.start_row)
372         screen->damaged.end_row = rect.start_row;
373       if(screen->damaged.end_row > rect.end_row)
374         screen->damaged.end_row = rect.end_row;
378     fprintf(stderr, "TODO: Just flush and redo damaged=" STRFrect " rect=" STRFrect "\n",
379         ARGSrect(screen->damaged), ARGSrect(rect));
491   VTermRect rect;
503       VTermRect rect = {
509       scrollrect(rect, first_blank_row - new_rows, 0, user);
531     VTermRect rect = {
537     damagerect(screen, rect);
544         VTermRect rect = {
555         scrollrect(rect, -1, 0, user);
560         rect.end_row = 1;
561         damagerect(screen, rect);
570     rect.start_row = old_rows;
571     rect.end_row   = new_rows;
572     rect.start_col = 0;
573     rect.end_col   = new_cols;
574     damagerect(screen, rect);
589     VTermRect rect;
597     rect.start_row = row;
598     rect.end_row   = row + 1;
599     rect.start_col = 0;
600     rect.end_col   = newinfo->doublewidth ? screen->cols / 2 : screen->cols;
601     damagerect(screen, rect);
604       rect.start_col = screen->cols / 2;
605       rect.end_col   = screen->cols;
607       erase_internal(rect, 0, user);
680 static size_t _get_chars(const VTermScreen *screen, const int utf8, void *buffer, size_t len, const VTermRect rect)
701   for(row = rect.start_row; row < rect.end_row; row++) {
702     for(col = rect.start_col; col < rect.end_col; col++) {
723     if(row < rect.end_row - 1) {
732 size_t vterm_screen_get_chars(const VTermScreen *screen, uint32_t *chars, size_t len, const VTermRect rect)
734   return _get_chars(screen, 0, chars, len, rect);
737 size_t vterm_screen_get_text(const VTermScreen *screen, char *str, size_t len, const VTermRect rect)
739   return _get_chars(screen, 1, str, len, rect);