From 6d77e94b652ab4b8070b5acf1c6febfe77fc41c3 Mon Sep 17 00:00:00 2001
From: Leo Tenenbaum <pommicket@gmail.com>
Date: Thu, 25 Feb 2021 14:30:27 -0500
Subject: change cursor

---
 buffer.c |  7 ++++++-
 main.c   | 13 +++++++++++++
 ted.h    |  5 ++++-
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/buffer.c b/buffer.c
index 0c226ea..c14389b 100644
--- a/buffer.c
+++ b/buffer.c
@@ -2072,7 +2072,7 @@ void buffer_render(TextBuffer *buffer, Rect r) {
 	rect_coords(r, &x1, &y1, &x2, &y2);
 	// Correct the scroll, because the window size might have changed
 	buffer_correct_scroll(buffer);
-
+	
 	Font *font = buffer_font(buffer);
 	u32 nlines = buffer->nlines;
 	Line *lines = buffer->lines;
@@ -2123,6 +2123,11 @@ void buffer_render(TextBuffer *buffer, Rect r) {
 
 	buffer->x1 = x1; buffer->y1 = y1; buffer->x2 = x2; buffer->y2 = y2;
 
+	// change cursor to ibeam when it's hovering over the buffer
+	if ((!ted->menu || buffer == &ted->line_buffer) && rect_contains_point(rect4(x1, y1, x2, y2), ted->mouse_pos)) {
+		ted->cursor = ted->cursor_ibeam;
+	}
+
 	
 	if (buffer->center_cursor_next_frame) {
 		buffer_center_cursor(buffer);
diff --git a/main.c b/main.c
index a370a45..70200f2 100644
--- a/main.c
+++ b/main.c
@@ -360,6 +360,11 @@ int main(int argc, char **argv) {
 
 	u32 *colors = settings->colors; (void)colors;
 
+	ted->cursor_ibeam = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM);
+	ted->cursor_arrow = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW);
+	ted->cursor_resize_h = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE);
+	ted->cursor_resize_v = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS);
+
 	Uint32 time_at_last_frame = SDL_GetTicks();
 	
 	while (!ted->quit) {
@@ -521,6 +526,9 @@ int main(int argc, char **argv) {
 			}
 		}
 		
+		// default to arrow cursor
+		ted->cursor = ted->cursor_arrow;
+		
 		if (!(SDL_GetMouseState(NULL, NULL) & SDL_BUTTON_LMASK)) {
 			// originally this was done on SDL_MOUSEBUTTONUP events but for some reason
 			// I was getting a bunch of those even when I was holding down the mouse.
@@ -713,6 +721,7 @@ int main(int argc, char **argv) {
 	#endif
 		
 		SDL_SetWindowTitle(window, ted->window_title);
+		SDL_SetCursor(ted->cursor);
 	
 		SDL_GL_SwapWindow(window);
 		PROFILE_TIME(frame_end);
@@ -735,6 +744,10 @@ int main(int argc, char **argv) {
 
 	if (log) fclose(log);
 
+	SDL_FreeCursor(ted->cursor_arrow);
+	SDL_FreeCursor(ted->cursor_ibeam);
+	SDL_FreeCursor(ted->cursor_resize_h);
+	SDL_FreeCursor(ted->cursor_resize_v);
 	SDL_GL_DeleteContext(glctx);
 	SDL_DestroyWindow(window);
 	SDL_Quit();
diff --git a/ted.h b/ted.h
index 3c31ab0..cdfa433 100644
--- a/ted.h
+++ b/ted.h
@@ -274,7 +274,10 @@ typedef struct Ted {
 	
 	// used by menus to keep track of the scroll position so we can return to it.
 	v2d prev_active_buffer_scroll;
-
+	
+	SDL_Cursor *cursor_arrow, *cursor_ibeam, *cursor_resize_h, *cursor_resize_v;
+	SDL_Cursor *cursor; // which cursor to use this frame
+	
 	char **tag_selector_entries; // an array of all tags (see tag_selector_open)
 
 	// points to a selector if any is open, otherwise NULL.
-- 
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