decorate xwayland views

include/rootston/view.h

@@ -61,6 +61,10 @@ struct roots_view {
 	double x, y;
 	float rotation;
 
+	bool decorated;
+	int border_width;
+	int titlebar_height;
+
 	bool maximized;
 	struct roots_output *fullscreen_output;
 	struct {
@@ -113,6 +117,7 @@ struct roots_view {
 };
 
 void view_get_box(const struct roots_view *view, struct wlr_box *box);
+void view_get_deco_box(const struct roots_view *view, struct wlr_box *box);
 void view_activate(struct roots_view *view, bool active);
 void view_move(struct roots_view *view, double x, double y);
 void view_resize(struct roots_view *view, uint32_t width, uint32_t height);

render/gles2/renderer.c

@@ -177,7 +177,7 @@ static bool wlr_gles2_render_texture(struct wlr_renderer *_renderer,
 static void wlr_gles2_render_quad(struct wlr_renderer *renderer,
 		const float (*color)[4], const float (*matrix)[16]) {
 	GL_CALL(glUseProgram(shaders.quad));
-	GL_CALL(glUniformMatrix4fv(0, 1, GL_TRUE, *matrix));
+	GL_CALL(glUniformMatrix4fv(0, 1, GL_FALSE, *matrix));
 	GL_CALL(glUniform4f(1, (*color)[0], (*color)[1], (*color)[2], (*color)[3]));
 	draw_quad();
 }

rootston/desktop.c

@@ -31,6 +31,18 @@ void view_get_box(const struct roots_view *view, struct wlr_box *box) {
 	}
 }
 
+void view_get_deco_box(const struct roots_view *view, struct wlr_box *box) {
+	view_get_box(view, box);
+	if (!view->decorated) {
+		return;
+	}
+
+	box->x -= view->border_width;
+	box->y -= (view->border_width + view->titlebar_height);
+	box->width += view->border_width * 2;
+	box->height += (view->border_width * 2 + view->titlebar_height);
+}
+
 static void view_update_output(const struct roots_view *view,
 		const struct wlr_box *before) {
 	struct roots_desktop *desktop = view->desktop;

rootston/output.c

@@ -144,8 +144,32 @@ static void render_xwayland_children(struct wlr_xwayland_surface *surface,
 	}
 }
 
+static void render_decorations(struct roots_view *view,
+		struct roots_desktop *desktop, struct wlr_output *output) {
+	if (!view->decorated) {
+		return;
+	}
+	struct wlr_box deco_box;
+	view_get_deco_box(view, &deco_box);
+	double ox = deco_box.x;
+	double oy = deco_box.y;
+	wlr_output_layout_output_coords(desktop->layout, output, &ox, &oy);
+	ox *= output->scale;
+	oy *= output->scale;
+
+	float matrix[16];
+	wlr_output_get_box_matrix(output, ox, oy, deco_box.width,
+		deco_box.height, WL_OUTPUT_TRANSFORM_NORMAL, view->rotation,
+		&matrix);
+
+	float color[4] = { 0.2, 0.2, 0.2, 1 };
+	wlr_render_colored_quad(desktop->server->renderer, &color, &matrix);
+}
+
 static void render_view(struct roots_view *view, struct roots_desktop *desktop,
 		struct wlr_output *wlr_output, struct timespec *when) {
+	render_decorations(view, desktop, wlr_output);
+
 	switch (view->type) {
 	case ROOTS_XDG_SHELL_V6_VIEW:
 		render_surface(view->wlr_surface, desktop, wlr_output, when,

rootston/xwayland.c

@@ -296,6 +296,7 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 	view->type = ROOTS_XWAYLAND_VIEW;
 	view->x = (double)surface->x;
 	view->y = (double)surface->y;
+
 	view->xwayland_surface = surface;
 	view->roots_xwayland_surface = roots_surface;
 	view->wlr_surface = surface->surface;
@@ -311,6 +312,10 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 	wl_list_insert(&desktop->views, &view->link);
 
 	if (!surface->override_redirect) {
+		view->decorated = true;
+		view->border_width = 4;
+		view->titlebar_height = 12;
+
 		view_setup(view);
 	}
 }