X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fwindtk.c;h=69ad9fa0bf08a5a8f7319c61fcddb21e4e11ff51;hb=492a32903dd07d3736bb878e81eb95f351556bac;hp=c34dc428f74ab2c25e2a721bff530f2d797e5896;hpb=526fc352816f21f1cbfa8110262a58224c14d208;p=windtk

diff --git a/src/windtk.c b/src/windtk.c
index c34dc42..69ad9fa 100644
--- a/src/windtk.c
+++ b/src/windtk.c
@@ -124,19 +124,76 @@ void wt_draw_tree(wt_widget *tree)
 	int i;
 
 	if(tree->draw) {
-		tree->draw(tree, &wt->gfx);
+		if(wt->gfx.flags & WT_GFX_NODIRTY) {
+			tree->draw(tree, &wt->gfx);
+		} else {
+			if(tree->dirty) {
+				tree->draw(tree, &wt->gfx);
+
+				if(!tree->parent || !tree->parent->dirty) {
+					/* topmost dirty widget should update rects */
+					if(tree->type == WT_TYPE_WINDOW) {
+						struct wt_rect r;
+						calc_window_rect(&r, tree);
+						wt_add_upd_rect(&r);
+					} else {
+						wt_add_upd_rect(&tree->rect);
+					}
+				}
+			}
+		}
 	}
 
 	for(i=0; i<tree->num_child; i++) {
 		wt_draw_tree(tree->child[i]);
 	}
+
+	tree->dirty = 0;
 }
 
 void wt_draw(void)
 {
+	wt->num_upd = 0;
 	wt_draw_tree(wt->root);
 }
 
+int wt_num_upd(void)
+{
+	return wt->num_upd;
+}
+
+struct wt_rect *wt_upd_rect(int idx)
+{
+	if(idx < 0 || idx >= wt->num_upd) {
+		return 0;
+	}
+	return wt->upd + idx;
+}
+
+void wt_add_upd_rect(struct wt_rect *r)
+{
+	int i;
+	struct wt_rect rect;
+
+	for(i=0; i<wt->num_upd; i++) {
+		if(wt_rect_overlap(wt->upd + i, r)) {
+			rect = wt->upd[i];
+			wt->upd[i] = wt->upd[--wt->num_upd];
+			wt_rect_union(&rect, r);
+			wt_add_upd_rect(&rect);
+			return;
+		}
+	}
+
+	/* no overlaps found, add it if there is space, or union with existing if not */
+	if(wt->num_upd >= MAX_UPD_RECTS) {
+		wt_rect_union(wt->upd, r);
+	} else {
+		wt->upd[wt->num_upd++] = *r;
+	}
+}
+
+
 void wt_gfx_color(int cidx)
 {
 	wt->gfx.color(wt->colors[cidx]);
@@ -161,11 +218,11 @@ void wt_gfx_frame(struct wt_rect *r, int style, int basecol)
 		wt_gfx_fillrect(r);
 	}
 	wt_gfx_color(FRMSTYLE(style) == FRM_OUT ? basecol + 2 : basecol + 1);
-	wt_gfx_fillrect4i(r->x + 1, r->y + r->height - 1, r->width - 2, 1);
-	wt_gfx_fillrect4i(r->x + r->width - 1, r->y, 1, r->height);
+	wt_gfx_fillrect4i(r->x + 1, r->y + r->h - 1, r->w - 2, 1);
+	wt_gfx_fillrect4i(r->x + r->w - 1, r->y, 1, r->h);
 	wt_gfx_color(FRMSTYLE(style) == FRM_OUT ? basecol + 1 : basecol + 2);
-	wt_gfx_fillrect4i(r->x + 1, r->y, r->width - 2, 1);
-	wt_gfx_fillrect4i(r->x, r->y, 1, r->height);
+	wt_gfx_fillrect4i(r->x + 1, r->y, r->w - 2, 1);
+	wt_gfx_fillrect4i(r->x, r->y, 1, r->h);
 }
 
 void wt_gfx_line(int x0, int y0, int x1, int y1)
@@ -177,6 +234,31 @@ void wt_rect(struct wt_rect *r, int x, int y, int w, int h)
 {
 	r->x = x;
 	r->y = y;
-	r->width = w;
-	r->height = h;
+	r->w = w;
+	r->h = h;
+}
+
+void wt_rect_union(struct wt_rect *a, struct wt_rect *b)
+{
+	int x1, y1;
+
+	x1 = a->x + a->w;
+	y1 = a->y + a->h;
+
+	if(b->x < a->x) a->x = b->x;
+	if(b->y < a->y) a->y = b->y;
+	if(b->x + b->w > x1) x1 = b->x + b->w;
+	if(b->y + b->h > y1) y1 = b->y + b->h;
+
+	a->w = x1 - a->x;
+	a->h = y1 - a->y;
+}
+
+int wt_rect_overlap(struct wt_rect *a, struct wt_rect *b)
+{
+	if(a->x > b->x + b->w) return 0;
+	if(b->x > a->x + a->w) return 0;
+	if(a->y > b->y + b->h) return 0;
+	if(b->y > a->x + a->h) return 0;
+	return 1;
 }