Render titles

1 files changed, 65 insertions, 0 deletions

diff --git a/sway/tree/container.c b/sway/tree/container.c
index 6ac59547..b33985af 100644
--- a/sway/tree/container.c
+++ b/sway/tree/container.c
@@ -7,6 +7,8 @@
 #include <wayland-server.h>
 #include <wlr/types/wlr_output_layout.h>
 #include <wlr/types/wlr_wl_shell.h>
+#include "cairo.h"
+#include "pango.h"
 #include "sway/config.h"
 #include "sway/input/input-manager.h"
 #include "sway/input/seat.h"
@@ -120,6 +122,13 @@ static void _container_destroy(struct sway_container *cont) {
 	if (cont->name) {
 		free(cont->name);
 	}
+	if (cont->title_focused) {
+		// If one is set then all of these are set
+		wlr_texture_destroy(cont->title_focused);
+		wlr_texture_destroy(cont->title_focused_inactive);
+		wlr_texture_destroy(cont->title_unfocused);
+		wlr_texture_destroy(cont->title_urgent);
+	}
 	list_free(cont->children);
 	cont->children = NULL;
 	free(cont);
@@ -546,3 +555,59 @@ void container_damage_whole(struct sway_container *con) {
 	}
 	output_damage_whole_container(output->sway_output, con);
 }
+
+static void update_title_texture(struct sway_container *con,
+		struct wlr_texture **texture, struct border_colors *class) {
+	if (!sway_assert(con->type == C_CONTAINER || con->type == C_VIEW,
+			"Unexpected type %s", container_type_to_str(con->type))) {
+		return;
+	}
+	if (!con->width) {
+		return;
+	}
+	struct sway_container *output = container_parent(con, C_OUTPUT);
+	if (!output) {
+		return;
+	}
+	if (*texture) {
+		wlr_texture_destroy(*texture);
+	}
+	if (!con->name) {
+		return;
+	}
+
+	int width = con->width * output->sway_output->wlr_output->scale;
+	int height = config->font_height * output->sway_output->wlr_output->scale;
+
+	cairo_surface_t *surface = cairo_image_surface_create(
+			CAIRO_FORMAT_ARGB32, width, height);
+	cairo_t *cairo = cairo_create(surface);
+	PangoContext *pango = pango_cairo_create_context(cairo);
+	cairo_set_source_u32(cairo, class->text);
+	cairo_move_to(cairo, 0, 0);
+
+	pango_printf(cairo, config->font, output->sway_output->wlr_output->scale,
+			false, "%s", con->name);
+
+	cairo_surface_flush(surface);
+	unsigned char *data = cairo_image_surface_get_data(surface);
+	int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
+	struct wlr_renderer *renderer = wlr_backend_get_renderer(
+			output->sway_output->wlr_output->backend);
+	*texture = wlr_texture_from_pixels(
+			renderer, WL_SHM_FORMAT_ARGB8888, stride, width, height, data);
+	cairo_surface_destroy(surface);
+	g_object_unref(pango);
+	cairo_destroy(cairo);
+}
+
+void container_update_title_textures(struct sway_container *container) {
+	update_title_texture(container, &container->title_focused,
+			&config->border_colors.focused);
+	update_title_texture(container, &container->title_focused_inactive,
+			&config->border_colors.focused_inactive);
+	update_title_texture(container, &container->title_unfocused,
+			&config->border_colors.unfocused);
+	update_title_texture(container, &container->title_urgent,
+			&config->border_colors.urgent);
+}