jinput: add keymap customization function

include/justui/jinput.h

@@ -11,6 +11,9 @@
 
 #include <gint/display.h>
 
+/* Keymap function for jinput. See jinput_set_keymap_function(). */
+typedef uint32_t jinput_keymap_function_t(int key, bool shift, bool alpha);
+
 /* jinput: One-line input field
 
    This widget is used to read input from the user. It has a single line of
@@ -63,6 +66,9 @@ typedef struct {
 	/* Timer ID for the cursor state */
 	int8_t timer;
 
+	/* Custom keymap function (may be NULL) */
+	jinput_keymap_function_t *keymap_fun;
+
 } jinput;
 
 /* Type IDs */
@@ -81,6 +87,15 @@ void jinput_set_text_color(jinput *input, int color);
 void jinput_set_font(jinput *input, font_t const *font);
 void jinput_set_prompt(jinput *input, char const *prompt);
 
+/* Set a custom keymap function. The keymap function is called when a key is
+   pressed that should produce input in the field. The following parameters are
+   provided:
+   * key is the code for the pressed key (<gint/keycodes.h>)
+   * shift and alpha indicate the state of modifiers
+   The function should return a Unicode code point. Note that jinput can deal
+   with any Unicode code point but the font used for the jinput might not! */
+void jinput_set_keymap_function(jinput *input, jinput_keymap_function_t *kf);
+
 /* Current value visible in the widget, normally useful upon receiving the
    JINPUT_VALIDATED event, not guaranteed otherwise */
 char const *jinput_value(jinput *input);

src/jfileselect.c

@@ -28,9 +28,9 @@ struct fileinfo {
 	/* Entry name (owned by the structure) */
 	char *name;
 	/* File size in bytes if file, number of entries if folder */
-	int size;
+	int size :24;
 	/* Type from [struct dirent], -1 for the "Save As" entry */
-	int type;
+	int8_t type;
 };
 
 jfileselect *jfileselect_create(void *parent)

src/jinput.c

@@ -56,6 +56,7 @@ jinput *jinput_create(char const *prompt, size_t length, void *parent)
 
 	i->mode = JINPUT_FLAT;
 	i->timer = -1;
+	i->keymap_fun = NULL;
 
 	return i;
 }
@@ -79,6 +80,11 @@ void jinput_set_prompt(jinput *i, char const *prompt)
 	i->widget.dirty = 1;
 }
 
+void jinput_set_keymap_function(jinput *i, jinput_keymap_function_t *kf)
+{
+	i->keymap_fun = kf;
+}
+
 //---
 // Input helpers
 //---
@@ -305,7 +311,10 @@ static bool jinput_poly_event(void *i0, jevent e)
 				i->mode |= JINPUT_ALPHA;
 		}
 		else {
-			uint32_t code_point = keymap_translate(ev.key,
+			jinput_keymap_function_t *kf = i->keymap_fun;
+			if(!kf)
+				kf = &keymap_translate;
+			uint32_t code_point = (*kf)(ev.key,
 				(i->mode & JINPUT_SHIFT) || (i->mode & JINPUT_SHIFT_LOCK),
 				(i->mode & JINPUT_ALPHA) || (i->mode & JINPUT_ALPHA_LOCK)
 			);