added widget.c

liblitz/Makefile

@@ -6,7 +6,7 @@ include ../config.mk
 CFLAGS += -I../libixp -I../libcext
 LDFLAGS += -L../libixp -lixp -L../libcext -lcext
 
-SRC = blitz.c color.c font.c label.c layout.c window.c
+SRC = blitz.c color.c font.c label.c layout.c window.c widget.c
 OBJ = ${SRC:.c=.o}
 
 all: liblitz.a

liblitz/blitz.h

@@ -19,6 +19,7 @@ typedef struct BlitzLabel BlitzLabel;
 typedef struct BlitzLayout BlitzLayout;
 #define BLITZLAYOUT(p) ((BlitzLayout *)(p))
 typedef union BlitzWidget BlitzWidget;
+#define BLITZWIDGET(p) ((BlitzWidget *)(p))
 typedef struct BlitzWin BlitzWin;
 
 struct Blitz {
@@ -63,6 +64,7 @@ struct BlitzLayout {
 	Bool expand;
 	BlitzWidget *next;
 	void (*draw)(BlitzWidget *);
+	void (*destroy)(BlitzWidget *);
 	/* widget specific */
 	BlitzWin *win;
 	BlitzWidget *rows;
@@ -75,6 +77,7 @@ struct BlitzLabel {
 	Bool expand;
 	BlitzWidget *next;
 	void (*draw)(BlitzWidget *);
+	void (*destroy)(BlitzWidget *);
 	/* widget specific */
 	BlitzColor color;
 	BlitzAlign align;
@@ -87,7 +90,9 @@ union BlitzWidget {
 	Bool expand;
 	BlitzWidget *next;
 	void (*draw)(BlitzWidget *);
+	void (*destroy)(BlitzWidget *);
 	BlitzLabel label;
+	BlitzLayout layout;
 };
 
 typedef struct {
@@ -114,12 +119,16 @@ void blitz_drawlabel(BlitzDraw *d);
 void blitz_drawborder(BlitzDraw *d);
 
 /* layout.c */
-BlitzLayout *blitz_create_layout(BlitzWin *win);
+BlitzLayout *blitz_create_layout(BlitzWin *win, BlitzWidget **w);
 
 /* font.c */
 unsigned int blitz_textwidth(BlitzFont *font, char *text);
 void blitz_loadfont(BlitzFont *font, char *fontstr);
 
+/* widget.c */
+void blitz_add_widget(BlitzWidget **l, BlitzWidget *w);
+void blitz_rm_widget(BlitzWidget **l, BlitzWidget *w);
+
 /* window.c */
 BlitzWin *blitz_create_win(unsigned long mask, 
 							int x, int y, int w, int h);

liblitz/layout.c

@@ -22,26 +22,36 @@ xscale(BlitzWidget *w)
 
 }
 
+static void
+xdestroy(BlitzWidget *w)
+{
+	BlitzLayout *l = BLITZLAYOUT(w);
+	for(w = l->cols; w; w = w->next)
+		w->destroy(w);
+	for(w = l->rows; w; w = w->next)
+		w->destroy(w);
+}
+
 static void
 xdraw(BlitzWidget *w)
 {
 	BlitzLayout *l = BLITZLAYOUT(w);
 	for(w = l->cols; w; w = w->next)
-		if(w->draw)
-			w->draw(w);
+		w->draw(w);
 	for(w = l->rows; w; w = w->next)
-		if(w->draw)
-			w->draw(w);
+		w->draw(w);
 }
 
 BlitzLayout *
-blitz_create_layout(BlitzWin *win)
+blitz_create_layout(BlitzWin *win, BlitzWidget **w)
 {
 	BlitzLayout *l;
 	l = cext_emallocz(sizeof(BlitzLayout));
 	l->win = win;
 	l->cols = l->rows = nil;
-	l->scale = xscale;
+	l->destroy = xdestroy;
 	l->draw = xdraw;
+	l->scale = xscale;
+	blitz_add_widget(w, BLITZWIDGET(l));
 	return l;
 }

liblitz/widget.c

@@ -0,0 +1,27 @@
+/*
+ * (C)opyright MMIV-MMVI Anselm R. Garbe <garbeam at gmail dot com>
+ * See LICENSE file for license details.
+ */
+
+#include <cext.h>
+#include <stdlib.h>
+
+#include "blitz.h"
+
+void
+blitz_add_widget(BlitzWidget **l, BlitzWidget *w)
+{
+	BlitzWidget **wt;
+	for(wt = l; *wt; wt = &(*wt)->next);
+	w->next = nil;
+	*wt = w;
+}
+
+void
+blitz_rm_widget(BlitzWidget **l, BlitzWidget *w)
+{
+	BlitzWidget **wt;
+	for(wt = l; *wt && *wt != w; wt = &(*wt)->next);
+	cext_assert(*wt == w);
+	*wt = w->next;
+}