From 67ec83b3a6a59567421ebec8bdbc985645fbba90 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Fri, 06 Aug 2021 19:37:06 -0400
Subject: tk: Handle zero-width text rendering

Fixes:

    ERROR: Couldn't create surface: Text has zero width
---
(limited to 'src/tk')

diff --git a/src/tk/text.c b/src/tk/text.c
index 1cbeb50..5d61682 100644
--- a/src/tk/text.c
+++ b/src/tk/text.c
@@ -193,7 +193,8 @@ _mftk_text_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
 	SDL_Rect          rect;
 	int               cur_x;
 
-	if (t->texture == NULL && _mftk_text_render_val(t, renderer) < 0) {
+	if (t->val[0] != '\0' && t->texture == NULL &&
+			_mftk_text_render_val(t, renderer) < 0) {
 		return -1;
 	}
 
@@ -206,9 +207,14 @@ _mftk_text_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
 	t->curval[t->cur] = '\0';
 	TTF_SizeUTF8(t->font, t->curval, &cur_x, NULL);
 
-	if (SDL_RenderCopy(renderer, t->texture, NULL, &rect) < 0 ||
-			SDL_SetRenderDrawColor(renderer,
-				t->color->r, t->color->g,
+	if (t->val[0] != '\0' &&
+			SDL_RenderCopy(renderer, t->texture, NULL, &rect) < 0) {
+		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+				"Couldn't render widget: %s",
+				SDL_GetError());
+		return -1;
+	}
+	if (SDL_SetRenderDrawColor(renderer, t->color->r, t->color->g,
 				t->color->b, t->color->a) < 0 ||
 			SDL_RenderDrawLine(renderer,
 				x, y + w->h, x + w->w, y + w->h) < 0) {
--
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