Add all the necessary bits to use color if the terminal allows it.

You can now specify separate attributes for selected/not selected
cases individually for each field and also an attr for the form as
a whole so you can now have colored backgrounds for the form and
different coloured fields etc.

Update the example.

Change the copyright to a BSD style one.

4 files changed, 118 insertions, 53 deletions

diff --git a/lib/libforms/examples/example.frm b/lib/libforms/examples/example.frm
index 542d909..942bbbf 100644
--- a/lib/libforms/examples/example.frm
+++ b/lib/libforms/examples/example.frm
@@ -1,5 +1,10 @@
+Colors example {
+	pair = red, yellow
+	pair = blue, white
+}
+
 Field Title {
-	attributes = A_BOLD
+	attributes = COLOR_PAIR(2)
 	text = "A Simple Demo"
 }
 
@@ -37,13 +42,13 @@ Field field7 {
 
 Field field8 {
 	width = 6
-	attributes = A_BOLD|A_REVERSE
 	action = "EXIT"
 	function = exit_form
 }
 
 Field field9 {
-	attributes = A_BOLD|A_REVERSE
+	attributes = COLOR_PAIR(1)
+	highlight = COLOR_PAIR(1)|A_BOLD
 	action = "CANCEL"
 	function = cancel_form
 }
@@ -80,6 +85,8 @@ Link cancel as field9 {
 Form example at 0,0 {
 	height = 24
 	width = 80
+	colortable = example
+	attributes = COLOR_PAIR(1)
 
 	Field Title  at  0,30
 
diff --git a/lib/libforms/forms.c b/lib/libforms/forms.c
index b0b2acf..ab7b172 100644
--- a/lib/libforms/forms.c
+++ b/lib/libforms/forms.c
@@ -1,24 +1,46 @@
-/*
- * Copyright (c) 1995 Paul Richards. 
+/*-
+ * Copyright (c) 1995
+ *	Paul Richards.  All rights reserved.
  *
- * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer, 
+ *    verbatim and that no modifications are made prior to this 
+ *    point in the file.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Paul Richards.
+ * 4. The name Paul Richards may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
  *
- * This software may be used, modified, copied, distributed, and
- * sold, in both source and binary form provided that the above
- * copyright and these terms are retained, verbatim, as the first
- * lines of this file.  Under no circumstances is the author
- * responsible for the proper functioning of this software, nor does
- * the author assume any responsibility for damages incurred with
- * its use.
  */
 
 #include <string.h>
 #include <stdlib.h>
 #include <ctype.h>
 #include <forms.h>
+#include <ncurses.h>
+
 #include "internal.h"
 
-unsigned int keymap[] = {
+unsigned int f_keymap[] = {
 	KEY_UP,			/* F_UP */
 	KEY_DOWN,		/* F_DOWN */
 	9,			/* F_RIGHT */
@@ -28,8 +50,9 @@ unsigned int keymap[] = {
 	KEY_RIGHT,		/* F_CRIGHT */
 	KEY_HOME,		/* F_CHOME */
 	KEY_END,		/* F_CEND */
-	263,		/* F_CBS */
-	330		/* F_CDEL */
+	263,			/* F_CBS */
+	330,			/* F_CDEL */
+	10			/* F_ACCEPT */
 };
 
 int done=0;
@@ -39,7 +62,15 @@ initfrm(struct form *form)
 {
 
 	struct field *field = &form->field[0];
+	int i;
 
+	if (has_colors()) {
+		start_color();
+		if (form->color_table)
+			for (i=0; form->color_table[i].f != -1; i++) {
+				init_pair(i+1, form->color_table[i].f, form->color_table[i].b);
+			}
+	}
 	cbreak();
 	noecho();
 
@@ -52,6 +83,7 @@ initfrm(struct form *form)
 
 	keypad(form->window, TRUE);
 
+
 	while (field->type != F_END) {
 		if (field->type == F_INPUT) {
 			field->field.input->input = malloc(field->field.input->limit);
@@ -81,6 +113,7 @@ initfrm(struct form *form)
 		form->no_fields++;
 		field = &form->field[form->no_fields];
 	}
+	form->current_field = form->start_field;
 	show_form(form);
 	return (OK);
 }
@@ -104,12 +137,14 @@ endfrm(struct form *form)
 int
 update_form(struct form *form)
 {
+	int selattr;
 
 	show_form(form);
 
 	if (form->current_field == -1)
 		return (F_CANCEL);
 
+	wattrset(form->window, form->field[form->current_field].selattr);
 	switch (form->field[form->current_field].type) {
 		case F_MENU:
 			field_menu(form);
@@ -125,6 +160,7 @@ update_form(struct form *form)
 			print_status("Error, current field is invalid");
 			return (F_CANCEL);
 	}
+	wattrset(form->window, 0);
 
 	return (done);
 }
@@ -133,9 +169,15 @@ static void
 show_form(struct form *form)
 {
 	int i;
+	int y, x;
+
+	wattrset(form->window, form->attr);
+	for (y = 0; y < form->height; y++)
+		for (x = 0; x < form->width; x++)
+			mvwaddch(form->window, y, x, ' ');
 
 	for (i=0; i < form->no_fields; i++) {
-		wattrset(form->window, 0);
+		wattrset(form->window, form->field[i].attr);
 		wmove(form->window, form->field[i].y, form->field[i].x);
 		switch (form->field[i].type) {
 			case F_TEXT:
@@ -155,6 +197,7 @@ show_form(struct form *form)
 				break;
 		}
 	}
+	wattrset(form->window, 0);
 	wrefresh(form->window);
 }
 
@@ -164,8 +207,6 @@ disp_text(struct form *form, int index)
 
 	struct field *field = &form->field[index];
 
-	wattron(form->window, field->attr);
-
 	if (print_string(form->window, field->y, field->x,
 	             field->width, field->field.text->text) == ERR)
 		print_status("Illegal scroll in print_string");
@@ -177,8 +218,6 @@ disp_input(struct form *form, int index)
 
 	struct field *field = &form->field[index];
 
-	wattron(form->window, field->attr);
-
 	if (field->field.input->lbl_flag) {
 		if (print_string(form->window, field->y, field->x,
 						 field->width, field->field.input->label) == ERR)
@@ -187,7 +226,6 @@ disp_input(struct form *form, int index)
 		if (print_string(form->window, field->y, field->x,
 						 field->width, field->field.input->input) == ERR)
 			print_status("Illegal scroll in print_string");
-		
 }
 
 static void
@@ -195,8 +233,6 @@ disp_menu(struct form *form, int index)
 {
 	struct field *field = &form->field[index];
 
-	wattron(form->window, field->attr);
-
 	if (print_string(form->window, field->y, field->x,
 			field->width,
 			field->field.menu->options[field->field.menu->selected]) == ERR)
@@ -208,14 +244,10 @@ disp_action(struct form *form, int index)
 {
 	struct field *field = &form->field[index];
 
-
-	wattron(form->window, field->attr);
-
 	if (print_string(form->window, field->y, field->x,
 				field->width,
 				field->field.action->text) == ERR)
 		print_status("Illegal scroll in print_string");
-
 }
 
 static void
@@ -226,7 +258,6 @@ field_action(struct form *form)
 	int ch;
 
 	for (;;) {
-		wattron(form->window, F_SELATTR);
 		disp_action(form, form->current_field);
 		wmove(form->window, field->y, field->x);
 		ch = wgetch(form->window);
@@ -247,7 +278,6 @@ field_menu(struct form *form)
 	int ch;
 
 	for (;;) {
-		wattron(form->window, F_SELATTR);
 		disp_menu(form, form->current_field);
 		wmove(form->window, field->y, field->x);
 		switch (ch = wgetch(form->window)) {
@@ -367,7 +397,6 @@ field_input(struct form *form)
 #define CURSPOS ((len < field->width) ? len : field->width)
 
 	len = strlen(field->field.input->input);
-	wattron(form->window, F_SELATTR);
 	disp_input(form, form->current_field);
 
 	cursor = CURSPOS;
diff --git a/lib/libforms/forms.h b/lib/libforms/forms.h
index 7b1bbf4..094ca7a 100644
--- a/lib/libforms/forms.h
+++ b/lib/libforms/forms.h
@@ -1,15 +1,35 @@
-/*
- * Copyright (c) 1995 Paul Richards. 
+/*-
+ * Copyright (c) 1995
+ *	Paul Richards.  All rights reserved.
  *
- * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer, 
+ *    verbatim and that no modifications are made prior to this 
+ *    point in the file.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Paul Richards.
+ * 4. The name Paul Richards may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
  *
- * This software may be used, modified, copied, distributed, and
- * sold, in both source and binary form provided that the above
- * copyright and these terms are retained, verbatim, as the first
- * lines of this file.  Under no circumstances is the author
- * responsible for the proper functioning of this software, nor does
- * the author assume any responsibility for damages incurred with
- * its use.
  */
 
 #include <ncurses.h>
@@ -26,14 +46,22 @@
 #define F_DONE 1
 #define F_CANCEL -1
 
+struct col_pair {
+	int f;
+	int b;
+};
+
 struct form {
 	int no_fields;
+	int start_field;
 	int current_field;
 	struct field *field;
 	int height;
 	int width;
 	int y;
 	int x;
+	int attr;
+	struct col_pair *color_table;
 	WINDOW *window;
 };
 
@@ -68,6 +96,7 @@ struct field {
 	int x;
 	int width;
 	int attr;
+	int selattr;
 	int next;
 	int up;
 	int down;
diff --git a/lib/libforms/internal.h b/lib/libforms/internal.h
index 2a8178e..b7bdb1e 100644
--- a/lib/libforms/internal.h
+++ b/lib/libforms/internal.h
@@ -12,18 +12,18 @@
  * its use.
  */
 
-#define F_UP		keymap[0]
-#define F_DOWN		keymap[1]
-#define F_RIGHT	keymap[2]
-#define F_LEFT		keymap[3]
-#define F_NEXT		keymap[4]
-#define F_CLEFT	keymap[5]
-#define F_CRIGHT	keymap[6]
-#define F_CHOME	keymap[7]
-#define F_CEND		keymap[8]
-#define F_CBS		keymap[9]
-#define F_CDEL		keymap[10]
-#define F_ACCEPT	F_NEXT
+#define F_UP		f_keymap[0]
+#define F_DOWN		f_keymap[1]
+#define F_RIGHT		f_keymap[2]
+#define F_LEFT		f_keymap[3]
+#define F_NEXT		f_keymap[4]
+#define F_CLEFT		f_keymap[5]
+#define F_CRIGHT	f_keymap[6]
+#define F_CHOME		f_keymap[7]
+#define F_CEND		f_keymap[8]
+#define F_CBS		f_keymap[9]
+#define F_CDEL		f_keymap[10]
+#define F_ACCEPT	f_keymap[11]
 
 /* Private function declarations */
 static void show_form(struct form *);