diff --git a/gtkarea/area.c b/gtkarea/area.c
index 54955b03..8e00ce24 100644
--- a/gtkarea/area.c
+++ b/gtkarea/area.c
@@ -7,6 +7,7 @@ struct areaPrivate {
 
 	GtkAdjustment *ha;
 	GtkAdjustment *va;
+	// TODO get rid of the need for these
 	int clientWidth;
 	int clientHeight;
 	// needed for GtkScrollable
@@ -118,33 +119,24 @@ static gboolean areaWidget_draw(GtkWidget *w, cairo_t *cr)
 {
 	areaWidget *a = areaWidget(w);
 	struct areaPrivate *ap = a->priv;
-	char *msg;
-	PangoLayout *layout;
-	int ypos;
-	int height;
+	uiAreaDrawParams dp;
+	double clipX0, clipY0, clipX1, clipY1;
 
-	ypos = 5;
+	// TODO dp.Context
 
-	msg = g_strdup_printf("client width %d height %d",
-		ap->clientWidth, ap->clientHeight);
-	layout = gtk_widget_create_pango_layout(GTK_WIDGET(a), msg);
-	cairo_move_to(cr, 5, ypos);
-	pango_cairo_show_layout(cr, layout);
-	pango_layout_get_pixel_size(layout, NULL, &height);
-	ypos += height;
-	g_object_unref(layout);
-	g_free(msg);
+	dp.ClientWidth = ap->clientWidth;
+	dp.ClientHeight = ap->clientHeight;
 
-	msg = g_strdup_printf("hscroll %d vscroll %d",
-		(int) gtk_adjustment_get_value(ap->ha),
-		(int) gtk_adjustment_get_value(ap->va));
-	layout = gtk_widget_create_pango_layout(GTK_WIDGET(a), msg);
-	cairo_move_to(cr, 5, ypos);
-	pango_cairo_show_layout(cr, layout);
-	pango_layout_get_pixel_size(layout, NULL, &height);
-	ypos += height;
-	g_object_unref(layout);
-	g_free(msg);
+	cairo_clip_extents(cr, &clipX0, &clipY0, &clipX1, &clipY1);
+	dp.ClipX = clipX0;
+	dp.ClipY = clipY0;
+	dp.ClipWidth = clipX1 - clipX0;
+	dp.ClipHeight = clipY1 - clipY0;
+
+	dp.HScrollPos = gtk_adjustment_get_value(ap->ha);
+	dp.VScrollPos = gtk_adjustment_get_value(ap->va);
+
+	(*(ap->ah->Draw))(ap->ah, ap->a, &dp);
 
 	return FALSE;
 }
@@ -168,6 +160,7 @@ static GParamSpec *pspecAreaHandler;
 
 static void onValueChanged(GtkAdjustment *a, gpointer data)
 {
+	// there's no way to scroll the contents of a widget, so we have to redraw the entire thing
 	gtk_widget_queue_draw(GTK_WIDGET(data));
 }
 
diff --git a/gtkarea/main.c b/gtkarea/main.c
index 6d39574e..859905fb 100644
--- a/gtkarea/main.c
+++ b/gtkarea/main.c
@@ -12,6 +12,11 @@ static struct handler h;
 static GtkWidget *nhspinb;
 static GtkWidget *nvspinb;
 
+static void handlerDraw(uiAreaHandler *a, uiArea *area, uiAreaDrawParams *params)
+{
+	// TODO
+}
+
 static uintmax_t handlerHScrollMax(uiAreaHandler *a, uiArea *area)
 {
 	return gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(nhspinb));
@@ -44,6 +49,7 @@ int main(void)
 	GtkWidget *scroller;
 	GtkWidget *grid;
 
+	h.ah.Draw = handlerDraw;
 	h.ah.HScrollMax = handlerHScrollMax;
 	h.ah.VScrollMax = handlerVScrollMax;
 
@@ -63,8 +69,6 @@ int main(void)
 	gtk_widget_set_valign(scroller, GTK_ALIGN_FILL);
 	gtk_container_add(GTK_CONTAINER(box), scroller);
 
-	// TODO area
-
 	grid = gtk_grid_new();
 	gtk_widget_set_halign(grid, GTK_ALIGN_START);
 	gtk_container_add(GTK_CONTAINER(box), grid);
diff --git a/gtkarea/ui.h b/gtkarea/ui.h
index 91823985..9032f9a7 100644
--- a/gtkarea/ui.h
+++ b/gtkarea/ui.h
@@ -5,9 +5,25 @@ typedef struct uiAreaHandler uiAreaHandler;
 typedef struct uiAreaDrawParams uiAreaDrawParams;
 
 struct uiAreaHandler {
-	// TODO draw
+	void (*Draw)(uiAreaHandler *, uiArea *, uiAreaDrawParams *);
 	uintmax_t (*HScrollMax)(uiAreaHandler *, uiArea *);
 	uintmax_t (*VScrollMax)(uiAreaHandler *, uiArea *);
 };
 
-// TODO uiAreaDrawParams
+struct uiAreaDrawParams {
+	// TODO context
+
+	intmax_t ClientWidth;
+	intmax_t ClientHeight;
+
+	intmax_t ClipX;
+	intmax_t ClipY;
+	intmax_t ClipWidth;
+	intmax_t ClipHeight;
+
+//TODO	xxxx DPIX;
+//TODO	xxxx DPIY;
+
+	intmax_t HScrollPos;
+	intmax_t VScrollPos;
+};