Merge pull request #204 from djpohly/scenegraph3

merge scenegraph3

README.md

@@ -19,15 +19,14 @@ dwl is not meant to provide every feature under the sun. Instead, like dwm, it s
 - Various Wayland protocols
 - XWayland support as provided by wlroots (can be enabled in `config.mk`)
 - Zero flickering - Wayland users naturally expect that "every frame is perfect"
+- Layer shell popups (used by Waybar)
+- Damage tracking provided by scenegraph API
 
 Features under consideration (possibly as patches) are:
 
 - Protocols made trivial by wlroots
-- Implement the input-inhibitor protocol to support screen lockers
-- Implement the idle-inhibit protocol which lets applications such as mpv disable idle monitoring
-- Layer shell popups (used by Waybar)
-- Basic yes/no damage tracking to avoid needless redraws
-- More in-depth damage region tracking ([which may improve power usage](https://mozillagfx.wordpress.com/2019/10/22/dramatically-reduced-power-usage-in-firefox-70-on-macos-with-core-animation/))
+- Implement the input-inhibitor protocol to support screen lockers (see https://github.com/djpohly/dwl/pull/132)
+- Implement the idle-inhibit protocol which lets applications such as mpv disable idle monitoring (see https://github.com/djpohly/dwl/pull/133)
 - Implement the text-input and input-method protocols to support IME once ibus implements input-method v2 (see https://github.com/ibus/ibus/pull/2256 and https://github.com/djpohly/dwl/pull/12)
 
 Feature *non-goals* for the main codebase include:

client.h

@@ -180,6 +180,26 @@ client_surface_at(Client *c, double cx, double cy, double *sx, double *sy)
 	return wlr_xdg_surface_surface_at(c->surface.xdg, cx, cy, sx, sy);
 }
 
+static inline void
+client_min_size(Client *c, int *width, int *height)
+{
+	struct wlr_xdg_toplevel *toplevel;
+	struct wlr_xdg_toplevel_state *state;
+#ifdef XWAYLAND
+	if (client_is_x11(c)) {
+		struct wlr_xwayland_surface_size_hints *size_hints;
+		size_hints = c->surface.xwayland->size_hints;
+		*width = size_hints->min_width;
+		*height = size_hints->min_height;
+		return;
+	}
+#endif
+	toplevel = c->surface.xdg->toplevel;
+	state = &toplevel->current;
+	*width = state->min_width;
+	*height = state->min_height;
+}
+
 static inline Client *
 client_from_popup(struct wlr_xdg_popup *popup)
 {