From ddf513909ce1742021b9c57ea7279a61aeda4899 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pj@pehjota.net>
Date: Wed, 04 Aug 2021 20:17:59 -0400
Subject: tk: Implement mouse button up event

---
diff --git a/src/splash.c b/src/splash.c
index b7d9185..9b94057 100644
--- a/src/splash.c
+++ b/src/splash.c
@@ -28,6 +28,13 @@
 #include "tk.h"
 #include "util.h"
 
+static int
+_mf_splash_play(void *user_data)
+{
+	SDL_LogInfo(SDL_LOG_CATEGORY_APPLICATION, "Playing");
+	return 0;
+}
+
 int
 mf_splash(SDL_Renderer *renderer)
 {
@@ -70,7 +77,8 @@ mf_splash(SDL_Renderer *renderer)
 			mftk_label_new(title_font, "Maze Fight", &text_color,
 				renderer),
 			mftk_button_new(text_font, "Play", &text_color,
-				&butn_color, 2, NULL, NULL, renderer));
+				&butn_color, 2, &_mf_splash_play, NULL,
+				renderer));
 	/* TODO: Widgets */
 	mftk_widget_layout(grid);
 
@@ -108,6 +116,8 @@ mf_splash(SDL_Renderer *renderer)
 		SDL_RenderClear(renderer);
 		mf_maze_render(maze, renderer, &maze_color,
 				MF_SPLASH_MAZE_CELL_W);
+		mftk_widget_event(grid, &event,
+				MF_SPLASH_WINDOW_P, MF_SPLASH_WINDOW_P);
 		mftk_widget_render(grid, renderer,
 				MF_SPLASH_WINDOW_P, MF_SPLASH_WINDOW_P);
 		SDL_RenderPresent(renderer);
diff --git a/src/tk.h b/src/tk.h
index 7a3c9c6..2a4706d 100644
--- a/src/tk.h
+++ b/src/tk.h
@@ -36,7 +36,7 @@ void
 mftk_widget_layout(struct mftk_widget *w);
 
 int
-mftk_widget_event(struct mftk_widget *w, SDL_Event *e);
+mftk_widget_event(struct mftk_widget *w, SDL_Event *e, int x, int y);
 
 int
 mftk_widget_render(struct mftk_widget *w, SDL_Renderer *renderer, int x, int y);
diff --git a/src/tk/button.c b/src/tk/button.c
index 0db91a9..ffac9de 100644
--- a/src/tk/button.c
+++ b/src/tk/button.c
@@ -42,7 +42,9 @@ _mftk_button_layout(struct mftk_widget *w)
 }
 
 static int
-_mftk_button_event(struct mftk_widget *w, SDL_Event *e)
+_mftk_button_event(struct mftk_widget *w, SDL_Event *e,
+		int x __attribute__((__unused__)),
+		int y __attribute__((__unused__)))
 {
 	struct mftk_button *b = (struct mftk_button *) w;
 
diff --git a/src/tk/grid.c b/src/tk/grid.c
index 5994929..67fa677 100644
--- a/src/tk/grid.c
+++ b/src/tk/grid.c
@@ -79,12 +79,33 @@ _mftk_grid_layout(struct mftk_widget *w)
 }
 
 static int
-_mftk_grid_event(struct mftk_widget *w, SDL_Event *e)
+_mftk_grid_event(struct mftk_widget *w, SDL_Event *e, int x, int y)
 {
-	struct mftk_grid *g = (struct mftk_grid *) w;
+	struct mftk_grid   *g = (struct mftk_grid *) w;
+	SDL_Point           p;
+	SDL_Rect            rect;
+	int                 r;
+	int                 c;
+	struct mftk_widget *child;
 
 	switch (e->type) {
 		case SDL_MOUSEBUTTONUP:
+			p.x = e->button.x;
+			p.y = e->button.y;
+			for (r = 0; r < g->rows; ++r) {
+				for (c = 0; c < g->cols; ++c) {
+					child = g->children[r * g->cols + c];
+					rect.x = x + g->children_x[c];
+					rect.y = y + g->children_y[r];
+					rect.w = child->w;
+					rect.h = child->h;
+					if (SDL_PointInRect(&p, &rect)
+							== SDL_TRUE) {
+						return mftk_widget_event(child,
+								e, x, y);
+					}
+				}
+			}
 			break;
 		default:
 			break;
diff --git a/src/tk/label.c b/src/tk/label.c
index ec4400a..1fcfd84 100644
--- a/src/tk/label.c
+++ b/src/tk/label.c
@@ -37,7 +37,9 @@ _mftk_label_layout(struct mftk_widget *w __attribute__((__unused__)))
 
 static int
 _mftk_label_event(struct mftk_widget *w __attribute__((__unused__)),
-		SDL_Event *e __attribute__((__unused__)))
+		SDL_Event *e __attribute__((__unused__)),
+		int x __attribute__((__unused__)),
+		int y __attribute__((__unused__)))
 {
 	/* No events */
 	return 0;
diff --git a/src/tk/widget.c b/src/tk/widget.c
index 1bf9407..ea4835e 100644
--- a/src/tk/widget.c
+++ b/src/tk/widget.c
@@ -61,9 +61,9 @@ mftk_widget_layout(struct mftk_widget *w)
 }
 
 int
-mftk_widget_event(struct mftk_widget *w, SDL_Event *e)
+mftk_widget_event(struct mftk_widget *w, SDL_Event *e, int x, int y)
 {
-	return w->event(w, e);
+	return w->event(w, e, x, y);
 }
 
 int
diff --git a/src/tk/widget.h b/src/tk/widget.h
index ae81553..4966749 100644
--- a/src/tk/widget.h
+++ b/src/tk/widget.h
@@ -28,7 +28,7 @@ struct mftk_widget {
 	int    vis;
 	int    can_focus;
 	void (*layout)(struct mftk_widget *);
-	int  (*event)(struct mftk_widget *, SDL_Event *);
+	int  (*event)(struct mftk_widget *, SDL_Event *, int, int);
 	int  (*render)(struct mftk_widget *, SDL_Renderer *, int, int);
 	void (*destroy)(struct mftk_widget *);
 };
--
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