Collaboration diagram for Rendering:

Files
file	render.c
	Terminal rendering of buffer contents and UI.

Functions
void	editorScroll (void)
	Recompute scroll offsets to keep the cursor visible.

void	editorDrawRows (struct abuf *ab)
	Render visible rows to the append buffer.

void	editorDrawStatusBar (struct abuf *ab)
	Draw the status bar (filename, ft, position).

void	editorDrawMessageBar (struct abuf *ab)
	Render the transient message bar.

void	editorRefreshScreen (void)
	Update viewport offsets to keep the cursor visible.

Detailed Description

Function Documentation

void editorDrawMessageBar ( struct abuf * ab )

Render the transient message bar.

Clears the line and draws the current status message if set recently.

Parameters

[in,out] ab Append buffer to receive terminal bytes.

void editorDrawRows ( struct abuf * ab )

Render visible rows to the append buffer.

Writes the visible portion of the buffer into ab using ANSI escapes and syntax highlighting. Control characters are inverted for visibility.

Parameters

[in,out] ab Append buffer to receive terminal bytes.

See also: editorDrawStatusBar(), editorDrawMessageBar(), editorRefreshScreen()

void editorDrawStatusBar ( struct abuf * ab )

Draw the status bar (filename, ft, position).

Shows filename, line count, modified flag, and right-aligned filetype and cursor position.

Parameters

[in,out] ab Append buffer to receive terminal bytes.

void editorRefreshScreen ( void )

Update viewport offsets to keep the cursor visible.

Scrolls the viewport, composes rows, status, and message bars into a dynamic buffer, restores the cursor position, and writes to STDOUT.

Postcondition: Terminal output is written; the append buffer is freed by abFree().

void editorScroll ( void )

Recompute scroll offsets to keep the cursor visible.

Updates E.rowoff and E.coloff based on cursor location and render x coordinate (rx) so that the cursor remains within the viewport.