From 17e65f8dd57762a2e79aeb79a5c0fb69849c07f9 Mon Sep 17 00:00:00 2001
From: pommicket <pommicket@gmail.com>
Date: Mon, 7 Aug 2023 08:11:29 -0400
Subject: buffer API

---
 buffer.c | 44 +++++++++++++++++++++++++++++++++++++++++++-
 main.c   |  1 -
 ted.h    | 23 ++++++++++++++++++++++-
 3 files changed, 65 insertions(+), 3 deletions(-)

diff --git a/buffer.c b/buffer.c
index 2c8e8e2..8e1bbfb 100644
--- a/buffer.c
+++ b/buffer.c
@@ -91,6 +91,48 @@ void buffer_set_view_only(TextBuffer *buffer, bool view_only) {
 	buffer->view_only = view_only;
 }
 
+double buffer_get_scroll_columns(TextBuffer *buffer) {
+	return buffer->scroll_x;
+}
+
+double buffer_get_scroll_lines(TextBuffer *buffer) {
+	return buffer->scroll_y;
+}
+
+double buffer_last_write_time(TextBuffer *buffer) {
+	return buffer->last_write_time;
+}
+
+BufferPos buffer_cursor_pos(TextBuffer *buffer) {
+	return buffer->cursor_pos;
+}
+
+bool buffer_selection_pos(TextBuffer *buffer, BufferPos *pos) {
+	if (buffer->selection) {
+		if (pos) *pos = buffer->selection_pos;
+		return true;
+	} else {
+		if (pos) *pos = (BufferPos){0};
+		return false;
+	}
+}
+
+u32 buffer_first_line_on_screen(TextBuffer *buffer) {
+	return buffer->first_line_on_screen;
+}
+
+u32 buffer_last_line_on_screen(TextBuffer *buffer) {
+	return buffer->last_line_on_screen;
+}
+
+void buffer_set_undo_enabled(TextBuffer *buffer, bool enabled) {
+	buffer->store_undo_events = enabled;
+}
+
+Rect buffer_rect(TextBuffer *buffer) {
+	return rect4(buffer->x1, buffer->y1, buffer->x2, buffer->y2);
+}
+
 const char *buffer_get_path(TextBuffer *buffer) {
 	return buffer->path;
 }
@@ -340,7 +382,7 @@ bool buffer_indent_with_spaces(TextBuffer *buffer) {
 	return buffer_settings(buffer)->indent_with_spaces;
 }
 
-u32 buffer_get_num_lines(TextBuffer *buffer) {
+u32 buffer_line_count(TextBuffer *buffer) {
 	return buffer->nlines;
 }
 
diff --git a/main.c b/main.c
index 7b2fd86..102290e 100644
--- a/main.c
+++ b/main.c
@@ -2,7 +2,6 @@
 TODO:
 - public Node API
 - public Selector/FileSelector API
-- more public TextBuffer API
 
 FUTURE FEATURES:
 - autodetect indentation (tabs vs spaces)
diff --git a/ted.h b/ted.h
index 7f65ddd..0ead024 100644
--- a/ted.h
+++ b/ted.h
@@ -326,12 +326,33 @@ typedef u64 EditNotifyID;
 bool buffer_is_view_only(TextBuffer *buffer);
 /// Set whether the buffer should be in view only mode.
 void buffer_set_view_only(TextBuffer *buffer, bool view_only);
+/// amount scrolled horizontally, in terms of the width of a space character
+double buffer_get_scroll_columns(TextBuffer *buffer);
+///n number of lines scrolled vertically
+double buffer_get_scroll_lines(TextBuffer *buffer);
+/// get last time buffer was written to, in the format of \ref time_get_seconds
+double buffer_last_write_time(TextBuffer *buffer);
+/// get position of the cursor
+BufferPos buffer_cursor_pos(TextBuffer *buffer);
+/// get position of non-cursor end of selection.
+///
+/// `pos` is allowed to be NULL.
+/// returns false if nothing is selected.
+bool buffer_selection_pos(TextBuffer *buffer, BufferPos *pos);
 /// Get path to buffer's file, or `NULL` if the buffer is unnamed.
 ///
 /// This string can be freed if the buffer is saved under a different name or closed, so don't keep it around for long.
 const char *buffer_get_path(TextBuffer *buffer);
 /// clear undo and redo history
 void buffer_clear_undo_redo(TextBuffer *buffer);
+/// set whether undo history should be kept
+void buffer_set_undo_enabled(TextBuffer *buffer, bool enabled);
+/// first line which will appear on screen
+u32 buffer_first_line_on_screen(TextBuffer *buffer);
+/// last line which will appear on screen
+u32 buffer_last_line_on_screen(TextBuffer *buffer);
+/// get rectangle buffer is rendered to
+Rect buffer_rect(TextBuffer *buffer);
 /// is this buffer empty?
 bool buffer_empty(TextBuffer *buffer);
 /// returns the buffer's filename (not full path), or "Untitled" if this buffer is untitled.
@@ -375,7 +396,7 @@ u8 buffer_tab_width(TextBuffer *buffer);
 /// Get whether or not to indent with spaces for this buffer.
 bool buffer_indent_with_spaces(TextBuffer *buffer);
 /// returns the number of lines in the buffer.
-u32 buffer_get_num_lines(TextBuffer *buffer);
+u32 buffer_line_count(TextBuffer *buffer);
 /// get line contents. does not include a newline character.
 /// NOTE: this string will be invalidated when the line is edited!!!
 /// only use it briefly!!
-- 
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