20060303a

1 files changed, 138 insertions, 0 deletions

diff --git a/libprefab/textbox.c b/libprefab/textbox.c
new file mode 100644
index 00000000..6211bfdb
--- /dev/null
+++ b/libprefab/textbox.c
@@ -0,0 +1,138 @@
+#include <lib9.h>
+#include <draw.h>
+#include <interp.h>
+#include <isa.h>
+#include "../libinterp/runt.h"
+#include <drawif.h>
+#include <prefab.h>
+
+PCompound*
+layoutbox(Prefab_Environ *e, Draw_Rect rr, String *titletext, List *texttext)
+{
+	Draw_Rect er, r, lr;
+	PCompound *pc;
+	Prefab_Compound *c;
+	PElement *title, *text;
+	Image *disp;
+	Draw_Image *ddisp;
+	Screen *screen;
+	Heap *h;
+	Rectangle t;
+	int wid, w;
+	Point p, pt;
+
+	screen = lookupscreen(e->screen);
+	if(screen == nil)
+		return H;
+
+	gchalt++;
+	wid = Dx(rr);
+	P2P(p, rr.min);
+	title = H;
+	text = H;
+	if(texttext != H){
+		er.min.x = 0;
+		er.min.y = 0;
+		er.max.x = wid-5;
+		er.max.y = Dy(rr);
+		text = layoutelement(e, texttext, er, EText);
+		if(text == H){
+			gchalt--;
+			return H;
+		}
+		if(wid <= 0)
+			wid = Dx(text->e.r)+5;
+	}
+	if(titletext != H){
+		/* see how wide title wants to be */
+		memset(&er, 0, sizeof er);
+		title = textelement(e, titletext, er, ETitle);
+		if(title == H){
+    Errtitle:
+			destroy(text);
+			gchalt--;
+			return H;
+		}
+		w = 2+1+3+Dx(title->e.r)+1;
+		/* if title is wider than text, adjust wid accordingly */
+		if(text!=0 && Dx(text->e.r)<w){
+			if(Dx(text->e.r) < 100){	/* narrow text; don't let title get too wide */
+				if(w > 250+5)
+					w = 250+5;
+				wid = w;
+			}
+			destroy(title);
+			er.min.x = 0;
+			er.min.y = 0;
+			er.max.x = wid-5;
+			er.max.y = 0;
+			title = textelement(e, titletext, er, ETitle);
+			if(title == H)
+				goto Errtitle;
+		}
+		if(wid <= 0)
+			wid = Dx(title->e.r)+5;
+	}
+
+	h = heapz(TCompound);
+	pc = H2D(PCompound*, h);
+	c = &pc->c;
+	c->title = (Prefab_Element*)title;
+	c->contents = (Prefab_Element*)text;
+	/* now can just destroy c to clean up */
+
+	r.min = DPOINT(p);
+	r.max.x = r.min.x+wid;
+	r.max.y = p.y+2+1 + 1+1;
+	if(title != H)
+		r.max.y += title->nkids*e->style->titlefont->height+1;
+	if(text != H)
+		r.max.y += Dy(text->e.r);
+
+	er = edgerect(e, DPOINT(p), &r);
+
+	R2R(t, er);
+	disp = allocwindow(screen, t, Refbackup /*refreshcompound*/, DWhite);
+	if(disp == nil){
+    Err:
+		destroy(c);
+		gchalt--;
+		return H;
+	}
+	if((ddisp=mkdrawimage(disp, e->screen, e->screen->display, nil)) == H){
+		freeimage(disp);
+		goto Err;
+	}
+
+	lr = r;
+	if(title != H){
+		pt.x = r.min.x+3;
+		pt.y = r.min.y+3;
+		translateelement(&title->e, pt);
+		lr.min.y = title->e.r.max.y+1;
+	}
+
+	if(text != H)
+		translateelement((Prefab_Element*)text, subpt(IPOINT(lr.min), IPOINT(text->e.r.min)));
+
+	c->r = r;
+	c->environ = e;
+	c->image = ddisp;
+	D2H(e)->ref++;
+	pc->display = screen->display;
+	gchalt--;
+	return pc;
+
+}
+
+PCompound*
+textbox(Prefab_Environ *e, Draw_Rect rr, String *titletext, String *texttext)
+{
+	PCompound *pc;
+	List *l;
+
+	l = listoflayout(e->style, texttext, EText);
+	pc = layoutbox(e, rr, titletext, l);
+	free(l);
+	return pc;
+}