From 189bbdf3e1d5285fc0508d1a190036d6f4295558 Mon Sep 17 00:00:00 2001
From: Leo Tenenbaum <pommicket@gmail.com>
Date: Sat, 2 Jan 2021 18:05:02 -0500
Subject: double/triple click to select word/line

---
 buffer.c | 23 +++++++++++++++++++++--
 main.c   | 21 ++++++++++++++++-----
 ted.cfg  |  2 +-
 3 files changed, 38 insertions(+), 8 deletions(-)

diff --git a/buffer.c b/buffer.c
index 2e72e54..d964f50 100644
--- a/buffer.c
+++ b/buffer.c
@@ -737,8 +737,9 @@ bool buffer_pixels_to_pos(TextBuffer *buffer, v2 pixel_coords, BufferPos *pos) {
 	if (display_line < 0 || display_line >= buffer_display_lines(buffer))
 		return false;
 	
-	u32 column = (u32)round(display_col + buffer->scroll_x);
 	u32 line = (u32)floor(display_line + buffer->scroll_y);
+	if (line >= buffer->nlines) line = buffer->nlines - 1;
+	u32 column = (u32)round(display_col + buffer->scroll_x);
 	u32 index = buffer_column_to_index(buffer, line, column);
 	pos->line = line;
 	pos->index = index;
@@ -1087,7 +1088,6 @@ void buffer_cursor_move_to_end_of_file(TextBuffer *buffer) {
 	buffer_cursor_move_to_pos(buffer, buffer_pos_end_of_file(buffer));
 }
 
-
 // insert `number` empty lines starting at index `where`.
 static void buffer_insert_lines(TextBuffer *buffer, u32 where, u32 number) {
 	u32 old_nlines = buffer->nlines;
@@ -1250,6 +1250,25 @@ void buffer_select_to_end_of_file(TextBuffer *buffer) {
 	buffer_select_to_pos(buffer, buffer_pos_end_of_file(buffer));
 }
 
+// select the word the cursor is inside of
+void buffer_select_word(TextBuffer *buffer) {
+	BufferPos start_pos = buffer->cursor_pos, end_pos = buffer->cursor_pos;
+	buffer_pos_move_left_words(buffer, &start_pos, 1);
+	buffer_pos_move_right_words(buffer, &end_pos, 1);
+	buffer_cursor_move_to_pos(buffer, end_pos);
+	buffer_select_to_pos(buffer, start_pos);
+}
+
+// select the line the cursor is currently on
+void buffer_select_line(TextBuffer *buffer) {
+	u32 line = buffer->cursor_pos.line;
+	if (line == buffer->nlines - 1)
+		buffer_cursor_move_to_pos(buffer, buffer_pos_end_of_line(buffer, line));
+	else
+		buffer_cursor_move_to_pos(buffer, buffer_pos_start_of_line(buffer, line + 1));
+	buffer_select_to_pos(buffer, buffer_pos_start_of_line(buffer, line));
+}
+
 
 static void buffer_shorten_line(Line *line, u32 new_len) {
 	assert(line->len >= new_len);
diff --git a/main.c b/main.c
index eca095b..9ece8ac 100644
--- a/main.c
+++ b/main.c
@@ -1,3 +1,7 @@
+// @TODO:
+// - select all (:select-all)
+// - blinking cursor (cursor-blink-time)
+// - text size (text-size, :increase-text-size, :decrease-text-size)
 #include "base.h"
 no_warn_start
 #if _WIN32
@@ -13,9 +17,6 @@ no_warn_end
 #include "command.h"
 #include "util.c"
 #include "colors.c"
-// @TODO:
-// - blinking cursor (cursor-blink-time)
-// - text size
 typedef struct {
 	u32 colors[COLOR_COUNT];
 	u8 tab_width;
@@ -142,10 +143,20 @@ int main(void) {
 				case SDL_BUTTON_LEFT: {
 					BufferPos pos = {0};
 					if (buffer_pixels_to_pos(buffer, V2((float)event.button.x, (float)event.button.y), &pos)) {
-						if (key_modifier == KEY_MODIFIER_SHIFT)
+						if (key_modifier == KEY_MODIFIER_SHIFT) {
 							buffer_select_to_pos(buffer, pos);
-						else if (key_modifier == 0)
+						} else if (key_modifier == 0) {
 							buffer_cursor_move_to_pos(buffer, pos);
+							switch ((event.button.clicks - 1) % 3) {
+							case 0: break; // single-click
+							case 1: // double-click: select word
+								buffer_select_word(buffer);
+								break;
+							case 2: // triple-click: select line
+								buffer_select_line(buffer);
+								break;
+							}
+						}
 					}
 				} break;
 				}
diff --git a/ted.cfg b/ted.cfg
index 219ce43..aecf14e 100644
--- a/ted.cfg
+++ b/ted.cfg
@@ -52,6 +52,6 @@ Ctrl+Shift+z = :redo
 border = #a77
 cursor-line-bg = #222
 cursor = #3ff
-selection-bg = #36a8
+selection-bg = #36aa
 text = #fff
 bg = #001
-- 
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