From c918280fb5de6e6256cfd9a438b3578c04e3afc2 Mon Sep 17 00:00:00 2001
From: Krow Savcik <krow@savcik.xyz>
Date: Tue, 6 Feb 2024 22:56:21 +0200
Subject: feautre: added undo/redo buttons

The change history is kept in a ring buffer of definite size 2000.
---
 src/ui.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'src/ui.c')

diff --git a/src/ui.c b/src/ui.c
index ccc2de9..28a54f6 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -6,6 +6,7 @@
 #include "ui.h"
 #include "cdraw.h"
 #include "types.h"
+#include "action.h"
 #include "canvas.h"
 #include "tools.h"
 #include "debug.h"
@@ -37,6 +38,8 @@ static const SDL_Rect ui_buttons_rect[] = {
 	{56, 54, 28, 28},  /* Zoom out */
 	{84, 54, 28, 28},  /* Clown */
 	{56, 82, 28, 28},  /* Color Picker */
+	{84, 82, 28, 28},  /* Undo */
+	{84, 110, 28, 28}, /* Redo */
 };
 
 struct UIPanel {
@@ -272,6 +275,12 @@ ui_mousel_down(int x, int y)
 			break;
 		case TOOL_TYPE_EMPTY:
 			break;
+		case TOOL_TYPE_UNDO:
+			user_canvas_undo(NULL);
+			break;
+		case TOOL_TYPE_REDO:
+			user_canvas_redo(NULL);
+			break;
 		default:
 			tool_change(col);
 			break;
@@ -369,7 +378,7 @@ ui_focus_panel_change(int x, int y)
     if (main_ui->focus_panel != NULL) {
         switch (main_ui->focus_panel->type) {
         case UI_PANELTYPE_CANVAS:
-            is_drawing = 0;
+			canvas_mousel_up(cur_canvas);
             main_ui->focus_panel = u;
             ui_redraw_panel(UI_PANELTYPE_CANVAS);
             break;
-- 
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