From 6b9f3748cf561254f085fa83ada80cb5ba9b3946 Mon Sep 17 00:00:00 2001
From: Simon Howard
Date: Thu, 29 Jun 2006 18:07:32 +0000
Subject: Add inverted checkboxes (tick in box when value is false)

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 565
---
 textscreen/txt_checkbox.c | 13 ++++++++++++-
 textscreen/txt_checkbox.h |  2 ++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/textscreen/txt_checkbox.c b/textscreen/txt_checkbox.c
index cde095a8..56746f5f 100644
--- a/textscreen/txt_checkbox.c
+++ b/textscreen/txt_checkbox.c
@@ -33,7 +33,7 @@ static void TXT_CheckBoxDrawer(TXT_UNCAST_ARG(checkbox), int selected)
 
     TXT_FGColor(TXT_COLOR_BRIGHT_WHITE);
 
-    if (*checkbox->variable)
+    if ((*checkbox->variable != 0) ^ checkbox->inverted)
     {
         TXT_DrawString("\x07");
     }
@@ -112,7 +112,18 @@ txt_checkbox_t *TXT_NewCheckBox(char *label, int *variable)
     TXT_InitWidget(checkbox, &txt_checkbox_class);
     checkbox->label = strdup(label);
     checkbox->variable = variable;
+    checkbox->inverted = 0;
 
     return checkbox;
 }
 
+txt_checkbox_t *TXT_NewInvertedCheckBox(char *label, int *variable)
+{
+    txt_checkbox_t *result;
+
+    result = TXT_NewCheckBox(label, variable);
+    result->inverted = 1;
+
+    return result;
+}
+
diff --git a/textscreen/txt_checkbox.h b/textscreen/txt_checkbox.h
index 3de21b30..44fb39c0 100644
--- a/textscreen/txt_checkbox.h
+++ b/textscreen/txt_checkbox.h
@@ -34,9 +34,11 @@ struct txt_checkbox_s
     txt_widget_t widget;
     char *label;
     int *variable;
+    int inverted;
 };
 
 txt_checkbox_t *TXT_NewCheckBox(char *label, int *variable);
+txt_checkbox_t *TXT_NewInvertedCheckBox(char *label, int *variable);
 
 #endif /* #ifndef TXT_CHECKBOX_H */
 
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