From 7d54dc4b520c2193a2f9517df469a0df4257e4e5 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Sat, 29 Jan 2022 03:01:08 -0500
Subject: tk: Add border with focus indication to text

More visible (and consistent with the rest of the UI changes) than just
the cursor.
---
(limited to 'src/tk/text.c')

diff --git a/src/tk/text.c b/src/tk/text.c
index 7401777..99ec76a 100644
--- a/src/tk/text.c
+++ b/src/tk/text.c
@@ -40,6 +40,7 @@ struct mftk_text {
 	int                  line_skip;
 	int                  ascent;
 	SDL_Texture         *texture;
+	int                  border;
 	int                  editable;
 	int                  blink_state;
 	Uint32               blink_timer;
@@ -258,6 +259,7 @@ _mftk_text_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
 {
 	struct mftk_text *t = (struct mftk_text *) w;
 	SDL_Rect          rect;
+	SDL_Color         color;
 	int               cur_x;
 	Uint32            timer;
 
@@ -271,6 +273,29 @@ _mftk_text_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
 		rect.y = y;
 		rect.w = w->w;
 		rect.h = w->h;
+		if (w->focused == SDL_TRUE) {
+			color.r = MFTK_COLOR_BDRF_R;
+			color.g = MFTK_COLOR_BDRF_G;
+			color.b = MFTK_COLOR_BDRF_B;
+			color.a = MFTK_COLOR_BDRF_A;
+		} else {
+			color.r = MFTK_COLOR_BDRN_R;
+			color.g = MFTK_COLOR_BDRN_G;
+			color.b = MFTK_COLOR_BDRN_B;
+			color.a = MFTK_COLOR_BDRN_A;
+		}
+		if (SDL_SetRenderDrawColor(renderer, color.r, color.g,
+					color.b, color.a) < 0 ||
+				SDL_RenderFillRect(renderer, &rect) < 0) {
+			SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+					"Couldn't render widget: %s",
+					SDL_GetError());
+			return -1;
+		}
+		rect.x += t->border;
+		rect.y += t->border;
+		rect.w -= t->border * 2;
+		rect.h -= t->border * 2;
 		if (SDL_SetRenderDrawColor(renderer,
 					MFTK_COLOR_BACK_R, MFTK_COLOR_BACK_G,
 					MFTK_COLOR_BACK_B, MFTK_COLOR_BACK_A) <
@@ -298,17 +323,6 @@ _mftk_text_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
 				SDL_GetError());
 		return -1;
 	}
-	if (t->editable == SDL_TRUE && (
-				SDL_SetRenderDrawColor(renderer,
-					_mftk_text_color.r, _mftk_text_color.g,
-					_mftk_text_color.b, _mftk_text_color.a)
-				< 0 || SDL_RenderDrawLine(renderer,
-					x, y + w->h, x + w->w, y + w->h) < 0)) {
-		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-				"Couldn't render widget: %s",
-				SDL_GetError());
-		return -1;
-	}
 	timer = SDL_GetTicks();
 	if (timer - t->blink_timer >= MFTK_CURSOR_BLINK_MS) {
 		if (t->blink_state == SDL_TRUE) {
@@ -318,13 +332,19 @@ _mftk_text_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y)
 		}
 		t->blink_timer = timer;
 	}
-	if (w->focused == SDL_TRUE && t->blink_state == SDL_TRUE &&
-			SDL_RenderDrawLine(renderer,
-				x + cur_x, y + t->y, x + cur_x, y + t->h) < 0) {
-		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
-				"Couldn't render widget: %s",
-				SDL_GetError());
-		return -1;
+	if (w->focused == SDL_TRUE && t->blink_state == SDL_TRUE) {
+		if (SDL_SetRenderDrawColor(renderer,
+					_mftk_text_color.r, _mftk_text_color.g,
+					_mftk_text_color.b, _mftk_text_color.a)
+				< 0 ||
+				SDL_RenderDrawLine(renderer,
+					x + cur_x, y + t->y,
+					x + cur_x, y + t->h) < 0) {
+			SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
+					"Couldn't render widget: %s",
+					SDL_GetError());
+			return -1;
+		}
 	}
 
 	return 0;
@@ -342,7 +362,7 @@ _mftk_text_destroy(struct mftk_widget *w)
 
 struct mftk_widget *
 mftk_text_new(const char *allowed_chars, int len, const char *val,
-		TTF_Font *font, int editable,
+		TTF_Font *font, int border, int editable,
 		int (*action)(void *, const char *), int (*submit)(void *),
 		void *user_data)
 {
@@ -363,6 +383,7 @@ mftk_text_new(const char *allowed_chars, int len, const char *val,
 	t->line_skip     = TTF_FontLineSkip(font);
 	t->ascent        = TTF_FontAscent  (font);
 	t->texture       = NULL;
+	t->border        = border;
 	t->editable      = editable;
 	t->blink_state   = SDL_TRUE;
 	t->blink_timer   = 0;
@@ -408,7 +429,11 @@ mftk_text_new(const char *allowed_chars, int len, const char *val,
 			w->w = advance;
 		}
 	}
-	w->h = t->line_skip + (editable == SDL_TRUE ? 1 : 0);
+	w->h = t->line_skip;
+	if (editable == SDL_TRUE) {
+		w->w += border * 2;
+		w->h += border * 2;
+	}
 
 	return w;
 }
--
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