[gtk/wip/otte/nodeeditor2: 1/19] Parse render nodes from text files
- From: Benjamin Otte <otte src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/otte/nodeeditor2: 1/19] Parse render nodes from text files
- Date: Sat, 27 Apr 2019 05:27:18 +0000 (UTC)
commit d07402f77a163f8fdf97db795bb1ed5e4e6b3f2d
Author: Timm Bäder <mail baedert org>
Date: Sat Mar 2 16:55:17 2019 +0100
Parse render nodes from text files
Instead of the previous approach using GVariant, this new approach uses
human-readable text files as the serialization format for render nodes.
The format is a custom one, but it is inspired by QML and conforms to
the CSS syntax. Because of that, we can use the CSS machinery from GTK
to parse it, and in particular share code to parse properties that GTK's
CSS machinery also supports, such as colors.
This commit breaks all existing usages of node files - such as the
testsuite and various test tools - they will be fixed in further
commits.
gsk/gskrendernode.c | 44 +-
gsk/gskrendernodeparser.c | 1781 ++++++++++++++++++++++++++++++++++++++
gsk/gskrendernodeparserprivate.h | 11 +
gsk/meson.build | 1 +
4 files changed, 1798 insertions(+), 39 deletions(-)
---
diff --git a/gsk/gskrendernode.c b/gsk/gskrendernode.c
index 343fd4b8ce..5f30c70b05 100644
--- a/gsk/gskrendernode.c
+++ b/gsk/gskrendernode.c
@@ -42,6 +42,7 @@
#include "gskdebugprivate.h"
#include "gskrendererprivate.h"
+#include "gskrendernodeparserprivate.h"
#include <graphene-gobject.h>
@@ -328,19 +329,11 @@ gsk_render_node_diff (GskRenderNode *node1,
GBytes *
gsk_render_node_serialize (GskRenderNode *node)
{
- GVariant *node_variant, *variant;
GBytes *result;
+ char *str;
- node_variant = gsk_render_node_serialize_node (node);
-
- variant = g_variant_new ("(suuv)",
- GSK_RENDER_NODE_SERIALIZATION_ID,
- (guint32) GSK_RENDER_NODE_SERIALIZATION_VERSION,
- (guint32) gsk_render_node_get_node_type (node),
- node_variant);
-
- result = g_variant_get_data_as_bytes (variant);
- g_variant_unref (variant);
+ str = gsk_render_node_serialize_to_string (node);
+ result = g_bytes_new_take (str, strlen (str));
return result;
}
@@ -397,36 +390,9 @@ GskRenderNode *
gsk_render_node_deserialize (GBytes *bytes,
GError **error)
{
- char *id_string;
- guint32 version, node_type;
- GVariant *variant, *node_variant;
GskRenderNode *node = NULL;
- variant = g_variant_new_from_bytes (G_VARIANT_TYPE ("(suuv)"), bytes, FALSE);
-
- g_variant_get (variant, "(suuv)", &id_string, &version, &node_type, &node_variant);
-
- if (!g_str_equal (id_string, GSK_RENDER_NODE_SERIALIZATION_ID))
- {
- g_set_error (error, GSK_SERIALIZATION_ERROR, GSK_SERIALIZATION_UNSUPPORTED_FORMAT,
- "Data not in GskRenderNode serialization format.");
- goto out;
- }
-
- if (version != GSK_RENDER_NODE_SERIALIZATION_VERSION)
- {
- g_set_error (error, GSK_SERIALIZATION_ERROR, GSK_SERIALIZATION_UNSUPPORTED_VERSION,
- "Format version %u not supported.", version);
- goto out;
- }
-
- node = gsk_render_node_deserialize_node (node_type, node_variant, error);
-
-out:
- g_free (id_string);
- g_variant_unref (node_variant);
- g_variant_unref (variant);
+ node = gsk_render_node_deserialize_from_bytes (bytes, error);
return node;
}
-
diff --git a/gsk/gskrendernodeparser.c b/gsk/gskrendernodeparser.c
new file mode 100644
index 0000000000..a5f7f82f65
--- /dev/null
+++ b/gsk/gskrendernodeparser.c
@@ -0,0 +1,1781 @@
+
+#include "gskrendernodeparserprivate.h"
+
+#include <gdk/gdkrgbaprivate.h>
+#include <gtk/css/gtkcss.h>
+#include "gtk/css/gtkcssparserprivate.h"
+#include "gskroundedrectprivate.h"
+#include "gskrendernodeprivate.h"
+#include "gsktransformprivate.h"
+
+typedef struct _Declaration Declaration;
+
+struct _Declaration
+{
+ const char *name;
+ gboolean (* parse_func) (GtkCssParser *parser, gpointer result);
+ gpointer result;
+};
+
+static gboolean
+parse_semicolon (GtkCssParser *parser)
+{
+ const GtkCssToken *token;
+
+ token = gtk_css_parser_get_token (parser);
+ if (gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+ {
+ gtk_css_parser_warn_syntax (parser, "No ';' at end of block");
+ return TRUE;
+ }
+ else if (!gtk_css_token_is (token, GTK_CSS_TOKEN_SEMICOLON))
+ {
+ gtk_css_parser_error_syntax (parser, "Expected ';' at end of statement");
+ return FALSE;
+ }
+
+ gtk_css_parser_consume_token (parser);
+ return TRUE;
+}
+
+static gboolean
+parse_rect_without_semicolon (GtkCssParser *parser,
+ graphene_rect_t *out_rect)
+{
+ double numbers[4];
+
+ if (!gtk_css_parser_consume_number (parser, &numbers[0]) ||
+ !gtk_css_parser_consume_number (parser, &numbers[1]) ||
+ !gtk_css_parser_consume_number (parser, &numbers[2]) ||
+ !gtk_css_parser_consume_number (parser, &numbers[3]))
+ return FALSE;
+
+ graphene_rect_init (out_rect, numbers[0], numbers[1], numbers[2], numbers[3]);
+
+ return TRUE;
+}
+
+static gboolean
+parse_rect (GtkCssParser *parser,
+ gpointer out_rect)
+{
+ graphene_rect_t r;
+
+ if (!parse_rect_without_semicolon (parser, &r) ||
+ !parse_semicolon (parser))
+ return FALSE;
+
+ graphene_rect_init_from_rect (out_rect, &r);
+ return TRUE;
+}
+
+static gboolean
+parse_data (GtkCssParser *parser,
+ gpointer out_data)
+{
+ const GtkCssToken *token;
+ struct {
+ guchar *data;
+ gsize data_len;
+ } *texture_data = out_data;
+
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is (token, GTK_CSS_TOKEN_STRING))
+ return FALSE;
+
+ if (!g_str_has_prefix (token->string.string, "data:;base64,"))
+ {
+ gtk_css_parser_error_value (parser, "Only base64 encoded data is allowed");
+ return FALSE;
+ }
+
+ texture_data->data = g_base64_decode (token->string.string + strlen ("data:;base64,"),
+ &texture_data->data_len);
+
+ gtk_css_parser_consume_token (parser);
+ if (!parse_semicolon (parser))
+ {
+ g_free (texture_data->data);
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+static gboolean
+parse_rounded_rect (GtkCssParser *parser,
+ gpointer out_rect)
+{
+ const GtkCssToken *token;
+ graphene_rect_t r;
+ graphene_size_t corners[4];
+ double d;
+ guint i;
+
+ if (!parse_rect_without_semicolon (parser, &r))
+ return FALSE;
+
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is_delim (token, '/'))
+ {
+ if (!parse_semicolon (parser))
+ return FALSE;
+ gsk_rounded_rect_init_from_rect (out_rect, &r, 0);
+ return TRUE;
+ }
+ gtk_css_parser_consume_token (parser);
+
+ for (i = 0; i < 4; i++)
+ {
+ token = gtk_css_parser_get_token (parser);
+ if (gtk_css_token_is (token, GTK_CSS_TOKEN_SEMICOLON) ||
+ gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+ break;
+ if (!gtk_css_parser_consume_number (parser, &d))
+ return FALSE;
+ corners[i].width = d;
+ }
+
+ if (i == 0)
+ {
+ gtk_css_parser_error_syntax (parser, "Expected a number");
+ return FALSE;
+ }
+
+ /* The magic (i - 1) >> 1 below makes it take the correct value
+ * according to spec. Feel free to check the 4 cases
+ */
+ for (; i < 4; i++)
+ corners[i].width = corners[(i - 1) >> 1].width;
+
+ token = gtk_css_parser_get_token (parser);
+ if (gtk_css_token_is_delim (token, '/'))
+ {
+ gtk_css_parser_consume_token (parser);
+
+ for (i = 0; i < 4; i++)
+ {
+ token = gtk_css_parser_get_token (parser);
+ if (gtk_css_token_is (token, GTK_CSS_TOKEN_SEMICOLON) ||
+ gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+ break;
+ if (!gtk_css_parser_consume_number (parser, &d))
+ return FALSE;
+ corners[i].height = d;
+ }
+
+ if (i == 0)
+ {
+ gtk_css_parser_error_syntax (parser, "Expected a number");
+ return FALSE;
+ }
+
+ for (; i < 4; i++)
+ corners[i].height = corners[(i - 1) >> 1].height;
+ }
+ else
+ {
+ for (i = 0; i < 4; i++)
+ corners[i].height = corners[i].width;
+ }
+
+ if (!parse_semicolon (parser))
+ return FALSE;
+
+ gsk_rounded_rect_init (out_rect, &r, &corners[0], &corners[1], &corners[2], &corners[3]);
+
+ return TRUE;
+}
+
+static gboolean
+parse_color (GtkCssParser *parser,
+ gpointer out_color)
+{
+ GdkRGBA color;
+
+ if (!gdk_rgba_parser_parse (parser, &color) ||
+ !parse_semicolon (parser))
+ return FALSE;
+
+ *(GdkRGBA *) out_color = color;
+
+ return TRUE;
+}
+
+static gboolean
+parse_double (GtkCssParser *parser,
+ gpointer out_double)
+{
+ double d;
+
+ if (!gtk_css_parser_consume_number (parser, &d) ||
+ !parse_semicolon (parser))
+ return FALSE;
+
+ *(double *) out_double = d;
+
+ return TRUE;
+}
+
+static gboolean
+parse_point (GtkCssParser *parser,
+ gpointer out_point)
+{
+ double x, y;
+
+ if (!gtk_css_parser_consume_number (parser, &x) ||
+ !gtk_css_parser_consume_number (parser, &y) ||
+ !parse_semicolon (parser))
+ return FALSE;
+
+ graphene_point_init (out_point, x, y);
+
+ return TRUE;
+}
+
+static gboolean
+parse_transform (GtkCssParser *parser,
+ gpointer out_transform)
+{
+ GskTransform *transform;
+
+ if (!gsk_transform_parser_parse (parser, &transform) ||
+ !parse_semicolon (parser))
+ {
+ gsk_transform_unref (transform);
+ return FALSE;
+ }
+
+ gsk_transform_unref (*(GskTransform **) out_transform);
+ *(GskTransform **) out_transform = transform;
+
+ return TRUE;
+}
+
+static gboolean
+parse_string (GtkCssParser *parser,
+ gpointer out_string)
+{
+ const GtkCssToken *token;
+ char *s;
+
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is (token, GTK_CSS_TOKEN_STRING))
+ return FALSE;
+
+ s = g_strdup (token->string.string);
+ gtk_css_parser_consume_token (parser);
+
+ if (!parse_semicolon (parser))
+ {
+ g_free (s);
+ return FALSE;
+ }
+
+ g_free (*(char **) out_string);
+ *(char **) out_string = s;
+
+ return TRUE;
+}
+
+static gboolean
+parse_stops (GtkCssParser *parser,
+ gpointer out_stops)
+{
+ GArray *stops;
+ GskColorStop stop;
+
+ stops = g_array_new (FALSE, FALSE, sizeof (GskColorStop));
+
+ for (;;)
+ {
+ if (!gtk_css_parser_consume_number (parser, &stop.offset))
+ goto error;
+
+ if (!gdk_rgba_parser_parse (parser, &stop.color))
+ goto error;
+
+ if (stops->len == 0 && stop.offset < 0)
+ gtk_css_parser_error_value (parser, "Color stop offset must be >= 0");
+ else if (stops->len > 0 && stop.offset < g_array_index (stops, GskColorStop, stops->len - 1).offset)
+ gtk_css_parser_error_value (parser, "Color stop offset must be >= previous value");
+ else if (stop.offset > 1)
+ gtk_css_parser_error_value (parser, "Color stop offset must be <= 1");
+ else
+ g_array_append_val (stops, stop);
+
+ if (gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_COMMA))
+ gtk_css_parser_skip (parser);
+ else
+ break;
+ }
+
+ if (stops->len < 2)
+ {
+ gtk_css_parser_error_value (parser, "At least 2 color stops need to be specified");
+ g_array_free (stops, TRUE);
+ return FALSE;
+ }
+
+ if (*(GArray **) out_stops)
+ g_array_free (*(GArray **) out_stops, TRUE);
+ *(GArray **) out_stops = stops;
+
+ return parse_semicolon (parser);
+
+error:
+ g_array_free (stops, TRUE);
+ return FALSE;
+}
+
+static gboolean
+parse_colors4 (GtkCssParser *parser,
+ gpointer out_colors)
+{
+ GdkRGBA *colors = (GdkRGBA *)out_colors;
+ int i;
+
+ for (i = 0; i < 4; i ++)
+ {
+ if (!gdk_rgba_parser_parse (parser, &colors[i]))
+ return FALSE;
+ }
+
+ return parse_semicolon (parser);
+}
+
+static gboolean
+parse_shadows (GtkCssParser *parser,
+ gpointer out_shadows)
+{
+ GArray *shadows = out_shadows;
+
+ for (;;)
+ {
+ GskShadow shadow = { {0, 0, 0, 1}, 0, 0, 0 };
+ double dx = 0, dy = 0, radius = 0;
+
+ if (!gdk_rgba_parser_parse (parser, &shadow.color))
+ gtk_css_parser_error_value (parser, "Expected shadow color");
+
+ if (!gtk_css_parser_consume_number (parser, &dx))
+ gtk_css_parser_error_value (parser, "Expected shadow x offset");
+
+ if (!gtk_css_parser_consume_number (parser, &dy))
+ gtk_css_parser_error_value (parser, "Expected shadow x offset");
+
+ if (!gtk_css_parser_consume_number (parser, &radius))
+ gtk_css_parser_error_value (parser, "Expected shadow blur radius");
+
+ shadow.dx = dx;
+ shadow.dy = dy;
+ shadow.radius = radius;
+
+ g_array_append_val (shadows, shadow);
+
+ if (gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_COMMA))
+ gtk_css_parser_skip (parser);
+ else
+ break;
+ }
+
+ return parse_semicolon (parser);
+}
+
+static gboolean
+parse_font (GtkCssParser *parser,
+ gpointer out_font)
+{
+ const GtkCssToken *token;
+ PangoFontDescription *desc;
+ PangoFontMap *font_map;
+ PangoContext *context;
+ PangoFont *font;
+
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is (token, GTK_CSS_TOKEN_STRING))
+ return FALSE;
+
+ desc = pango_font_description_from_string (token->string.string);
+ font_map = pango_cairo_font_map_get_default ();
+ context = pango_font_map_create_context (font_map);
+ font = pango_font_map_load_font (font_map, context, desc);
+
+ pango_font_description_free (desc);
+ g_object_unref (context);
+
+ *((PangoFont**)out_font) = font;
+
+ /* Skip font name token */
+ gtk_css_parser_consume_token (parser);
+
+ return parse_semicolon (parser);
+}
+
+static gboolean
+parse_glyphs (GtkCssParser *parser,
+ gpointer out_glyphs)
+{
+ GArray *glyphs;
+ PangoGlyphString *glyph_string;
+ int i;
+
+ glyphs = g_array_new (FALSE, TRUE, sizeof (double[5]));
+
+ for (;;)
+ {
+ double values[5];
+
+ /* We have 5 numbers per glyph */
+ for (i = 0; i < 5; i ++)
+ {
+ if (!gtk_css_parser_consume_number (parser, &values[i]))
+ return FALSE;
+ }
+
+ g_array_append_val (glyphs, values);
+
+ if (gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_COMMA))
+ gtk_css_parser_skip (parser);
+ else
+ break;
+ }
+
+ glyph_string = pango_glyph_string_new ();
+ pango_glyph_string_set_size (glyph_string, glyphs->len);
+
+ for (i = 0; i < glyphs->len; i ++)
+ {
+ PangoGlyphInfo g;
+ double *v = (double *)(glyphs->data + (i * sizeof (double) * 5));
+
+ g.glyph = (guint)v[0];
+ g.geometry.width = (int)v[1];
+ g.geometry.x_offset = (int)v[2];
+ g.geometry.y_offset = (int)v[3];
+ g.attr.is_cluster_start = (int)v[4];
+
+ glyph_string->glyphs[i] = g;
+ }
+
+ g_array_free (glyphs, TRUE);
+
+ *((PangoGlyphString **)out_glyphs) = glyph_string;
+
+ return parse_semicolon (parser);
+}
+
+static gboolean
+parse_node (GtkCssParser *parser, gpointer out_node);
+
+static GskRenderNode *
+parse_container_node (GtkCssParser *parser)
+{
+ GskRenderNode *node;
+ GPtrArray *nodes;
+ const GtkCssToken *token;
+
+ nodes = g_ptr_array_new_with_free_func ((GDestroyNotify) gsk_render_node_unref);
+
+ for (token = gtk_css_parser_get_token (parser);
+ !gtk_css_token_is (token, GTK_CSS_TOKEN_EOF);
+ token = gtk_css_parser_get_token (parser))
+ {
+ node = NULL;
+ if (parse_node (parser, &node))
+ {
+ g_ptr_array_add (nodes, node);
+ }
+ else
+ {
+ gtk_css_parser_skip_until (parser, GTK_CSS_TOKEN_OPEN_CURLY);
+ gtk_css_parser_skip (parser);
+ }
+ }
+
+ node = gsk_container_node_new ((GskRenderNode **) nodes->pdata, nodes->len);
+
+ g_ptr_array_unref (nodes);
+
+ return node;
+}
+
+static void
+parse_declarations_sync (GtkCssParser *parser)
+{
+ const GtkCssToken *token;
+
+ for (token = gtk_css_parser_get_token (parser);
+ !gtk_css_token_is (token, GTK_CSS_TOKEN_EOF);
+ token = gtk_css_parser_get_token (parser))
+ {
+ if (gtk_css_token_is (token, GTK_CSS_TOKEN_SEMICOLON) ||
+ gtk_css_token_is (token, GTK_CSS_TOKEN_OPEN_CURLY))
+ {
+ gtk_css_parser_skip (parser);
+ break;
+ }
+ gtk_css_parser_skip (parser);
+ }
+}
+
+static guint
+parse_declarations (GtkCssParser *parser,
+ const Declaration *declarations,
+ guint n_declarations)
+{
+ guint parsed = 0;
+ guint i;
+ const GtkCssToken *token;
+
+ g_assert (n_declarations < 8 * sizeof (guint));
+
+ for (token = gtk_css_parser_get_token (parser);
+ !gtk_css_token_is (token, GTK_CSS_TOKEN_EOF);
+ token = gtk_css_parser_get_token (parser))
+ {
+ for (i = 0; i < n_declarations; i++)
+ {
+ if (gtk_css_token_is_ident (token, declarations[i].name))
+ {
+ gtk_css_parser_consume_token (parser);
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is (token, GTK_CSS_TOKEN_COLON))
+ {
+ gtk_css_parser_error_syntax (parser, "Expected ':' after variable declaration");
+ parse_declarations_sync (parser);
+ }
+ else
+ {
+ gtk_css_parser_consume_token (parser);
+ if (parsed & (1 << i))
+ gtk_css_parser_warn_syntax (parser, "Variable \"%s\" defined multiple times",
declarations[i].name);
+ if (declarations[i].parse_func (parser, declarations[i].result))
+ parsed |= (1 << i);
+ else
+ parse_declarations_sync (parser);
+ }
+ break;
+ }
+ }
+ if (i == n_declarations)
+ {
+ if (gtk_css_token_is (token, GTK_CSS_TOKEN_IDENT))
+ gtk_css_parser_error_syntax (parser, "No variable named \"%s\"", token->string.string);
+ else
+ gtk_css_parser_error_syntax (parser, "Expected a variable name");
+ parse_declarations_sync (parser);
+ }
+ }
+
+ return parsed;
+}
+
+static GskRenderNode *
+parse_color_node (GtkCssParser *parser)
+{
+ graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
+ GdkRGBA color = { 0, 0, 0, 1 };
+ const Declaration declarations[] = {
+ { "bounds", parse_rect, &bounds },
+ { "color", parse_color, &color },
+ };
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+
+ return gsk_color_node_new (&color, &bounds);
+}
+
+static GskRenderNode *
+parse_linear_gradient_node (GtkCssParser *parser)
+{
+ graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
+ graphene_point_t start = GRAPHENE_POINT_INIT (0, 0);
+ graphene_point_t end = GRAPHENE_POINT_INIT (0, 0);
+ GArray *stops = NULL;
+ const Declaration declarations[] = {
+ { "bounds", parse_rect, &bounds },
+ { "start", parse_point, &start },
+ { "end", parse_point, &end },
+ { "stops", parse_stops, &stops },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (stops == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "No color stops given");
+ return NULL;
+ }
+
+ result = gsk_linear_gradient_node_new (&bounds, &start, &end, (GskColorStop *) stops->data, stops->len);
+
+ g_array_free (stops, TRUE);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_inset_shadow_node (GtkCssParser *parser)
+{
+ GskRoundedRect outline = GSK_ROUNDED_RECT_INIT (0, 0, 0, 0);
+ GdkRGBA color = { 0, 0, 0, 0 };
+ double dx, dy, blur, spread;
+ const Declaration declarations[] = {
+ { "outline", parse_rounded_rect, &outline },
+ { "color", parse_color, &color },
+ { "dx", parse_double, &dx },
+ { "dy", parse_double, &dy },
+ { "spread", parse_double, &spread },
+ { "blur", parse_double, &blur }
+ };
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+
+ return gsk_inset_shadow_node_new (&outline, &color, dx, dy, spread, blur);
+}
+
+static GskRenderNode *
+parse_border_node (GtkCssParser *parser)
+{
+ GskRoundedRect outline = GSK_ROUNDED_RECT_INIT (0, 0, 0, 0);
+ graphene_rect_t widths = GRAPHENE_RECT_INIT (0, 0, 0, 0);
+ GdkRGBA colors[4] = { { 0, 0, 0, 0 }, {0, 0, 0, 0}, {0, 0, 0, 0}, { 0, 0, 0, 0 } };
+ const Declaration declarations[] = {
+ { "outline", parse_rounded_rect, &outline },
+ { "widths", parse_rect, &widths },
+ { "colors", parse_colors4, &colors }
+ };
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+
+ return gsk_border_node_new (&outline, (float*)&widths, colors);
+}
+
+static GskRenderNode *
+parse_texture_node (GtkCssParser *parser)
+{
+ graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0);
+ struct {
+ guchar *data;
+ gsize data_len;
+ } texture_data = { NULL, 0 };
+ double width = 0.0;
+ double height = 0.0;
+ const Declaration declarations[] = {
+ { "bounds", parse_rect, &bounds },
+ { "width", parse_double, &width },
+ { "height", parse_double, &height },
+ { "texture", parse_data, &texture_data }
+ };
+ GdkTexture *texture;
+ GdkPixbuf *pixbuf;
+ GskRenderNode *node;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+
+ pixbuf = gdk_pixbuf_new_from_data (texture_data.data,
+ GDK_COLORSPACE_RGB,
+ TRUE,
+ 8,
+ (int)width,
+ (int)height,
+ 4 * (int)width,
+ (GdkPixbufDestroyNotify)g_free, NULL);
+
+ texture = gdk_texture_new_for_pixbuf (pixbuf);
+ g_object_unref (pixbuf);
+ node = gsk_texture_node_new (texture, &bounds);
+ g_object_unref (texture);
+
+ return node;
+}
+
+static GskRenderNode *
+parse_outset_shadow_node (GtkCssParser *parser)
+{
+ GskRoundedRect outline = GSK_ROUNDED_RECT_INIT (0, 0, 0, 0);
+ GdkRGBA color = { 0, 0, 0, 0 };
+ double dx, dy, blur, spread;
+ const Declaration declarations[] = {
+ { "outline", parse_rounded_rect, &outline },
+ { "color", parse_color, &color },
+ { "dx", parse_double, &dx },
+ { "dy", parse_double, &dy },
+ { "spread", parse_double, &spread },
+ { "blur", parse_double, &blur }
+ };
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+
+ return gsk_outset_shadow_node_new (&outline, &color, dx, dy, spread, blur);
+}
+
+static GskRenderNode *
+parse_transform_node (GtkCssParser *parser)
+{
+ GskRenderNode *child = NULL;
+ GskTransform *transform = NULL;
+ const Declaration declarations[] = {
+ { "transform", parse_transform, &transform },
+ { "child", parse_node, &child },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ gsk_transform_unref (transform);
+ return NULL;
+ }
+ /* This is very much cheating, isn't it? */
+ if (transform == NULL)
+ transform = gsk_transform_new ();
+
+ result = gsk_transform_node_new (child, transform);
+
+ gsk_render_node_unref (child);
+ gsk_transform_unref (transform);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_opacity_node (GtkCssParser *parser)
+{
+ GskRenderNode *child = NULL;
+ double opacity = 1.0;
+ const Declaration declarations[] = {
+ { "opacity", parse_double, &opacity },
+ { "child", parse_node, &child },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ return NULL;
+ }
+
+ result = gsk_opacity_node_new (child, opacity);
+
+ gsk_render_node_unref (child);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_color_matrix_node (GtkCssParser *parser)
+{
+ GskRenderNode *child = NULL;
+ graphene_matrix_t matrix;
+ GskTransform *transform = NULL;
+ graphene_rect_t offset_rect = GRAPHENE_RECT_INIT (0, 0, 0, 0);
+ graphene_vec4_t offset;
+ const Declaration declarations[] = {
+ { "matrix", parse_transform, &transform },
+ { "offset", parse_rect, &offset_rect },
+ { "child", parse_node, &child }
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ return NULL;
+ }
+
+ graphene_vec4_init (&offset,
+ offset_rect.origin.x, offset_rect.origin.y,
+ offset_rect.size.width, offset_rect.size.height);
+
+ gsk_transform_to_matrix (transform, &matrix);
+
+ result = gsk_color_matrix_node_new (child, &matrix, &offset);
+
+ gsk_transform_unref (transform);
+ gsk_render_node_unref (child);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_cross_fade_node (GtkCssParser *parser)
+{
+ GskRenderNode *start = NULL;
+ GskRenderNode *end = NULL;
+ double progress = 0.5;
+ const Declaration declarations[] = {
+ { "progress", parse_double, &progress },
+ { "start", parse_node, &start },
+ { "end", parse_node, &end },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (start == NULL || end == NULL)
+ {
+ if (start == NULL)
+ gtk_css_parser_error_syntax (parser, "Missing \"start\" property definition");
+ if (end == NULL)
+ gtk_css_parser_error_syntax (parser, "Missing \"end\" property definition");
+ g_clear_pointer (&start, gsk_render_node_unref);
+ g_clear_pointer (&end, gsk_render_node_unref);
+ return NULL;
+ }
+
+ result = gsk_cross_fade_node_new (start, end, progress);
+
+ gsk_render_node_unref (start);
+ gsk_render_node_unref (end);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_text_node (GtkCssParser *parser)
+{
+ PangoFont *font = NULL;
+ double x = 0;
+ double y = 0;
+ GdkRGBA color = { 0, 0, 0, 0 };
+ PangoGlyphString *glyphs = NULL;
+ const Declaration declarations[] = {
+ { "font", parse_font, &font },
+ { "x", parse_double, &x },
+ { "y", parse_double, &y },
+ { "color", parse_color, &color },
+ { "glyphs", parse_glyphs, &glyphs }
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+
+ if (!font || !glyphs)
+ return NULL;
+
+ result = gsk_text_node_new (font, glyphs, &color, x, y);
+
+ g_object_unref (font);
+ pango_glyph_string_free (glyphs);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_blur_node (GtkCssParser *parser)
+{
+ GskRenderNode *child = NULL;
+ double blur_radius = 0.0;
+ const Declaration declarations[] = {
+ { "blur", parse_double, &blur_radius },
+ { "child", parse_node, &child },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ return NULL;
+ }
+
+ result = gsk_blur_node_new (child, blur_radius);
+
+ gsk_render_node_unref (child);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_clip_node (GtkCssParser *parser)
+{
+ graphene_rect_t clip = GRAPHENE_RECT_INIT (0, 0, 0, 0);
+ GskRenderNode *child = NULL;
+ const Declaration declarations[] = {
+ { "clip", parse_rect, &clip },
+ { "child", parse_node, &child },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ return NULL;
+ }
+
+ result = gsk_clip_node_new (child, &clip);
+
+ gsk_render_node_unref (child);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_rounded_clip_node (GtkCssParser *parser)
+{
+ GskRoundedRect clip = GSK_ROUNDED_RECT_INIT (0, 0, 0, 0);
+ GskRenderNode *child = NULL;
+ const Declaration declarations[] = {
+ { "clip", parse_rounded_rect, &clip },
+ { "child", parse_node, &child },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ return NULL;
+ }
+
+ result = gsk_rounded_clip_node_new (child, &clip);
+
+ gsk_render_node_unref (child);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_shadow_node (GtkCssParser *parser)
+{
+ GskRenderNode *child = NULL;
+ GArray *shadows = g_array_new (FALSE, TRUE, sizeof (GskShadow));
+ const Declaration declarations[] = {
+ { "child", parse_node, &child },
+ { "shadows", parse_shadows, shadows }
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ return NULL;
+ }
+
+ if (shadows->len == 0)
+ {
+ gtk_css_parser_error_syntax (parser, "Need at least one shadow");
+ return child;
+ }
+
+ result = gsk_shadow_node_new (child, (GskShadow *)shadows->data, shadows->len);
+
+ g_array_free (shadows, TRUE);
+ gsk_render_node_unref (child);
+
+ return result;
+}
+
+static GskRenderNode *
+parse_debug_node (GtkCssParser *parser)
+{
+ char *message = NULL;
+ GskRenderNode *child = NULL;
+ const Declaration declarations[] = {
+ { "message", parse_string, &message},
+ { "child", parse_node, &child },
+ };
+ GskRenderNode *result;
+
+ parse_declarations (parser, declarations, G_N_ELEMENTS(declarations));
+ if (child == NULL)
+ {
+ gtk_css_parser_error_syntax (parser, "Missing \"child\" property definition");
+ return NULL;
+ }
+
+ result = gsk_debug_node_new (child, message);
+
+ gsk_render_node_unref (child);
+
+ return result;
+}
+
+static gboolean
+parse_node (GtkCssParser *parser,
+ gpointer out_node)
+{
+ static struct {
+ const char *name;
+ GskRenderNode * (* func) (GtkCssParser *);
+ } node_parsers[] = {
+ { "container", parse_container_node },
+ { "color", parse_color_node },
+ { "linear-gradient", parse_linear_gradient_node },
+ { "border", parse_border_node },
+ { "texture", parse_texture_node },
+ { "inset-shadow", parse_inset_shadow_node },
+ { "outset-shadow", parse_outset_shadow_node },
+ { "transform", parse_transform_node },
+ { "opacity", parse_opacity_node },
+ { "color-matrix", parse_color_matrix_node },
+ { "clip", parse_clip_node },
+ { "rounded-clip", parse_rounded_clip_node },
+ { "shadow", parse_shadow_node },
+ { "cross-fade", parse_cross_fade_node },
+ { "text", parse_text_node },
+ { "blur", parse_blur_node },
+ { "debug", parse_debug_node }
+#if 0
+ { "blend", parse_blend_node },
+ { "repeat", parse_repeat_node },
+ { "cairo", parse_cairo_node },
+#endif
+
+ };
+ GskRenderNode **node_p = out_node;
+ const GtkCssToken *token;
+ guint i;
+
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is (token, GTK_CSS_TOKEN_IDENT))
+ {
+ gtk_css_parser_error_syntax (parser, "Expected a node name");
+ return FALSE;
+ }
+
+ for (i = 0; i < G_N_ELEMENTS (node_parsers); i++)
+ {
+ if (gtk_css_token_is_ident (token, node_parsers[i].name))
+ {
+ GskRenderNode *node;
+
+ gtk_css_parser_consume_token (parser);
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is (token, GTK_CSS_TOKEN_OPEN_CURLY))
+ {
+ gtk_css_parser_error_syntax (parser, "Expected '{' after node name");
+ return FALSE;
+ }
+ gtk_css_parser_start_block (parser);
+ node = node_parsers[i].func (parser);
+ if (node)
+ {
+ token = gtk_css_parser_get_token (parser);
+ if (!gtk_css_token_is (token, GTK_CSS_TOKEN_EOF))
+ gtk_css_parser_error_syntax (parser, "Expected '}' at end of node definition");
+ g_clear_pointer (node_p, gsk_render_node_unref);
+ *node_p = node;
+ }
+ gtk_css_parser_end_block (parser);
+
+ return node != NULL;
+ }
+ }
+
+ gtk_css_parser_error_value (parser, "\"%s\" is not a valid node name", token->string.string);
+ return FALSE;
+}
+
+static void
+gsk_render_node_parser_error (GtkCssParser *parser,
+ const GtkCssLocation *start,
+ const GtkCssLocation *end,
+ const GError *error,
+ gpointer user_data)
+{
+ GString **error_string = user_data;
+
+ if (!*error_string)
+ *error_string = g_string_new (NULL);
+
+ g_string_append_printf (*error_string,
+ "ERROR: %zu:%zu: %s\n",
+ start->lines + 1,
+ start->line_chars,
+ error->message);
+}
+
+GskRenderNode *
+gsk_render_node_deserialize_from_bytes (GBytes *bytes,
+ GError **error)
+{
+ GskRenderNode *root = NULL;
+ GtkCssParser *parser;
+ GString *error_string = NULL;
+
+ parser = gtk_css_parser_new_for_bytes (bytes, NULL, NULL, gsk_render_node_parser_error,
+ &error_string, NULL);
+ root = parse_container_node (parser);
+
+ if (root && gsk_container_node_get_n_children (root) == 1)
+ {
+ GskRenderNode *child = gsk_container_node_get_child (root, 0);
+
+ gsk_render_node_ref (child);
+ gsk_render_node_unref (root);
+ root = child;
+ }
+
+ gtk_css_parser_unref (parser);
+
+ if (error_string != NULL)
+ {
+ *error = g_error_new_literal (GTK_CSS_PARSER_ERROR, 0, error_string->str);
+ g_string_free (error_string, TRUE);
+ }
+
+ return root;
+}
+
+
+typedef struct
+{
+ int indentation_level;
+ GString *str;
+} Printer;
+
+static void
+printer_init (Printer *self)
+{
+ self->indentation_level = 0;
+ self->str = g_string_new (NULL);
+}
+
+#define IDENT_LEVEL 2 /* Spaces per level */
+static void
+_indent (Printer *self)
+{
+ if (self->indentation_level > 0)
+ g_string_append_printf (self->str, "%*s", self->indentation_level * IDENT_LEVEL, " ");
+}
+#undef IDENT_LEVEL
+
+static void
+start_node (Printer *self,
+ const char *node_name)
+{
+ g_string_append_printf (self->str, "%s {\n", node_name);
+ self->indentation_level ++;
+}
+
+static void
+end_node (Printer *self)
+{
+ self->indentation_level --;
+ _indent (self);
+ g_string_append (self->str, "}\n");
+}
+
+static void
+string_append_double (GString *string,
+ double d)
+{
+ char buf[G_ASCII_DTOSTR_BUF_SIZE];
+
+ g_ascii_formatd (buf, G_ASCII_DTOSTR_BUF_SIZE, "%g", d);
+ g_string_append (string, buf);
+}
+
+
+static void
+append_rect (GString *str,
+ const graphene_rect_t *r)
+{
+ string_append_double (str, r->origin.x);
+ g_string_append_c (str, ' ');
+ string_append_double (str, r->origin.y);
+ g_string_append_c (str, ' ');
+ string_append_double (str, r->size.width);
+ g_string_append_c (str, ' ');
+ string_append_double (str, r->size.height);
+}
+
+static void
+append_rounded_rect (GString *str,
+ const GskRoundedRect *r)
+{
+ append_rect (str, &r->bounds);
+
+ if (!gsk_rounded_rect_is_rectilinear (r))
+ {
+ gboolean all_the_same = TRUE;
+ gboolean all_square = TRUE;
+ float w = r->corner[0].width;
+ float h = r->corner[0].height;
+ int i;
+
+ for (i = 1; i < 4; i ++)
+ {
+ if (r->corner[i].width != w ||
+ r->corner[i].height != h)
+ all_the_same = FALSE;
+
+ if (r->corner[i].width != r->corner[i].height)
+ all_square = FALSE;
+
+ }
+
+ g_string_append (str, " / ");
+
+ if (all_the_same)
+ {
+ string_append_double (str, w);
+ }
+ else if (all_square)
+ {
+ string_append_double (str, r->corner[0].width);
+ g_string_append_c (str, ' ');
+ string_append_double (str, r->corner[1].width);
+ g_string_append_c (str, ' ');
+ string_append_double (str, r->corner[2].width);
+ g_string_append_c (str, ' ');
+ string_append_double (str, r->corner[3].width);
+ }
+ else
+ {
+ for (i = 0; i < 4; i ++)
+ {
+ string_append_double (str, r->corner[i].width);
+ g_string_append_c (str, ' ');
+ }
+
+ g_string_append (str, "/ ");
+
+ for (i = 0; i < 3; i ++)
+ {
+ string_append_double (str, r->corner[i].height);
+ g_string_append_c (str, ' ');
+ }
+
+ string_append_double (str, r->corner[4].height);
+ }
+ }
+}
+
+static void
+append_rgba (GString *str,
+ const GdkRGBA *rgba)
+{
+ char *rgba_str = gdk_rgba_to_string (rgba);
+
+ g_string_append (str, rgba_str);
+
+ g_free (rgba_str);
+}
+
+static void
+append_point (GString *str,
+ const graphene_point_t *p)
+{
+ string_append_double (str, p->x);
+ g_string_append_c (str, ' ');
+ string_append_double (str, p->y);
+}
+
+static void
+append_vec4 (GString *str,
+ const graphene_vec4_t *v)
+{
+ string_append_double (str, graphene_vec4_get_x (v));
+ g_string_append_c (str, ' ');
+ string_append_double (str, graphene_vec4_get_y (v));
+ g_string_append_c (str, ' ');
+ string_append_double (str, graphene_vec4_get_z (v));
+ g_string_append_c (str, ' ');
+ string_append_double (str, graphene_vec4_get_w (v));
+}
+
+static void
+append_float_param (Printer *p,
+ const char *param_name,
+ float value)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ string_append_double (p->str, value);
+ g_string_append (p->str, ";\n");
+}
+
+static void
+append_rgba_param (Printer *p,
+ const char *param_name,
+ const GdkRGBA *value)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ append_rgba (p->str, value);
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+}
+
+static void
+append_rect_param (Printer *p,
+ const char *param_name,
+ const graphene_rect_t *value)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ append_rect (p->str, value);
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+}
+
+static void
+append_rounded_rect_param (Printer *p,
+ const char *param_name,
+ const GskRoundedRect *value)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ append_rounded_rect (p->str, value);
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+}
+
+static void
+append_point_param (Printer *p,
+ const char *param_name,
+ const graphene_point_t *value)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ append_point (p->str, value);
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+}
+
+static void
+append_vec4_param (Printer *p,
+ const char *param_name,
+ const graphene_vec4_t *value)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ append_vec4 (p->str, value);
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+}
+
+static void
+append_matrix_param (Printer *p,
+ const char *param_name,
+ const graphene_matrix_t *value)
+{
+ GskTransform *transform = NULL;
+
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+
+ transform = gsk_transform_matrix (transform, value);
+ gsk_transform_print (transform,p->str);
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+
+ gsk_transform_unref (transform);
+}
+
+static void
+append_transform_param (Printer *p,
+ const char *param_name,
+ GskTransform *transform)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ gsk_transform_print (transform, p->str);
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+}
+
+static void render_node_print (Printer *p,
+ GskRenderNode *node);
+
+static void
+append_node_param (Printer *p,
+ const char *param_name,
+ GskRenderNode *node)
+{
+ _indent (p);
+ g_string_append_printf (p->str, "%s: ", param_name);
+ render_node_print (p, node);
+}
+
+static void
+render_node_print (Printer *p,
+ GskRenderNode *node)
+{
+ switch (gsk_render_node_get_node_type (node))
+ {
+ case GSK_CONTAINER_NODE:
+ {
+ guint i;
+
+ start_node (p, "container");
+ for (i = 0; i < gsk_container_node_get_n_children (node); i ++)
+ {
+ GskRenderNode *child = gsk_container_node_get_child (node, i);
+
+ /* Only in container nodes do we want nodes to be indented. */
+ _indent (p);
+ render_node_print (p, child);
+ }
+ end_node (p);
+ }
+ break;
+
+ case GSK_COLOR_NODE:
+ {
+ start_node (p, "color");
+ append_rect_param (p, "bounds", &node->bounds);
+ append_rgba_param (p, "color", gsk_color_node_peek_color (node));
+ end_node (p);
+ }
+ break;
+
+ case GSK_CROSS_FADE_NODE:
+ {
+ start_node (p, "cross-fade");
+
+ append_float_param (p, "progress", gsk_cross_fade_node_get_progress (node));
+ append_node_param (p, "start", gsk_cross_fade_node_get_start_child (node));
+ append_node_param (p, "end", gsk_cross_fade_node_get_end_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_LINEAR_GRADIENT_NODE:
+ {
+ const guint n_stops = gsk_linear_gradient_node_get_n_color_stops (node);
+ const GskColorStop *stop;
+ int i;
+
+ start_node (p, "linear-gradient");
+
+ append_rect_param (p, "bounds", &node->bounds);
+ append_point_param (p, "start", gsk_linear_gradient_node_peek_start (node));
+ append_point_param (p, "end", gsk_linear_gradient_node_peek_end (node));
+
+ _indent (p);
+ g_string_append (p->str, "stops:");
+ for (i = 0; i < n_stops - 1; i ++)
+ {
+ stop = gsk_linear_gradient_node_peek_color_stops (node) + i;
+
+ g_string_append_c (p->str, ' ');
+ string_append_double (p->str, stop->offset);
+ g_string_append_c (p->str, ' ');
+ append_rgba (p->str, &stop->color);
+ g_string_append_c (p->str, ',');
+ }
+
+ /* Last one, no comma */
+ stop = gsk_linear_gradient_node_peek_color_stops (node) + n_stops - 1;
+ string_append_double (p->str, stop->offset);
+ g_string_append_c (p->str, ' ');
+ append_rgba (p->str, &stop->color);
+ g_string_append (p->str, ";\n");
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_OPACITY_NODE:
+ {
+ start_node (p, "opacity");
+
+ append_float_param (p, "opacity", gsk_opacity_node_get_opacity (node));
+ append_node_param (p, "child", gsk_opacity_node_get_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_OUTSET_SHADOW_NODE:
+ {
+ start_node (p, "outset-shadow");
+
+ append_rounded_rect_param (p, "outline", gsk_outset_shadow_node_peek_outline (node));
+ append_rgba_param (p, "color", gsk_outset_shadow_node_peek_color (node));
+ append_float_param (p, "dx", gsk_outset_shadow_node_get_dx (node));
+ append_float_param (p, "dy", gsk_outset_shadow_node_get_dy (node));
+ append_float_param (p, "spread", gsk_outset_shadow_node_get_spread (node));
+ append_float_param (p, "blur", gsk_outset_shadow_node_get_blur_radius (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_CLIP_NODE:
+ {
+ start_node (p, "clip");
+
+ append_rect_param (p, "clip", gsk_clip_node_peek_clip (node));
+ append_node_param (p, "child", gsk_clip_node_get_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_ROUNDED_CLIP_NODE:
+ {
+ start_node (p, "rounded-clip");
+
+ append_rounded_rect_param (p, "clip", gsk_rounded_clip_node_peek_clip (node));
+ append_node_param (p, "child", gsk_rounded_clip_node_get_child (node));
+
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_TRANSFORM_NODE:
+ {
+ start_node (p, "transform");
+
+ append_transform_param (p, "transform", gsk_transform_node_get_transform (node));
+ append_node_param (p, "child", gsk_transform_node_get_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_COLOR_MATRIX_NODE:
+ {
+ start_node (p, "color-matrix");
+
+ append_matrix_param (p, "matrix", gsk_color_matrix_node_peek_color_matrix (node));
+ append_vec4_param (p, "offset", gsk_color_matrix_node_peek_color_offset (node));
+ append_node_param (p, "child", gsk_color_matrix_node_get_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_BORDER_NODE:
+ {
+ start_node (p, "border");
+
+ append_rounded_rect_param (p, "outline", gsk_border_node_peek_outline (node));
+
+ _indent (p);
+ g_string_append (p->str, "widths: ");
+ string_append_double (p->str, gsk_border_node_peek_widths (node)[0]);
+ g_string_append_c (p->str, ' ');
+ string_append_double (p->str, gsk_border_node_peek_widths (node)[1]);
+ g_string_append_c (p->str, ' ');
+ string_append_double (p->str, gsk_border_node_peek_widths (node)[2]);
+ g_string_append_c (p->str, ' ');
+ string_append_double (p->str, gsk_border_node_peek_widths (node)[3]);
+ g_string_append (p->str, ";\n");
+
+ _indent (p);
+ g_string_append (p->str, "colors: ");
+ append_rgba (p->str, &gsk_border_node_peek_colors (node)[0]);
+ g_string_append_c (p->str, ' ');
+ append_rgba (p->str, &gsk_border_node_peek_colors (node)[1]);
+ g_string_append_c (p->str, ' ');
+ append_rgba (p->str, &gsk_border_node_peek_colors (node)[2]);
+ g_string_append_c (p->str, ' ');
+ append_rgba (p->str, &gsk_border_node_peek_colors (node)[3]);
+ g_string_append (p->str, ";\n");
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_SHADOW_NODE:
+ {
+ const guint n_shadows = gsk_shadow_node_get_n_shadows (node);
+ int i;
+
+ start_node (p, "shadow");
+
+ _indent (p);
+ g_string_append (p->str, "shadows: ");
+ for (i = 0; i < n_shadows; i ++)
+ {
+ const GskShadow *s = gsk_shadow_node_peek_shadow (node, i);
+ char *color;
+
+ color = gdk_rgba_to_string (&s->color);
+ g_string_append (p->str, color);
+ g_string_append_c (p->str, ' ');
+ string_append_double (p->str, s->dx);
+ g_string_append_c (p->str, ' ');
+ string_append_double (p->str, s->dy);
+ g_string_append_c (p->str, ' ');
+ string_append_double (p->str, s->radius);
+
+ if (i < n_shadows - 1)
+ g_string_append (p->str, ", ");
+
+ g_free (color);
+ }
+
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+
+ append_node_param (p, "child", gsk_shadow_node_get_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_INSET_SHADOW_NODE:
+ {
+ start_node (p, "inset-shadow");
+
+ append_rounded_rect_param (p, "outline", gsk_inset_shadow_node_peek_outline (node));
+ append_rgba_param (p, "color", gsk_inset_shadow_node_peek_color (node));
+ append_float_param (p, "dx", gsk_inset_shadow_node_get_dx (node));
+ append_float_param (p, "dy", gsk_inset_shadow_node_get_dy (node));
+ append_float_param (p, "spread", gsk_inset_shadow_node_get_spread (node));
+ append_float_param (p, "blur", gsk_inset_shadow_node_get_blur_radius (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_TEXTURE_NODE:
+ {
+ GdkTexture *texture = gsk_texture_node_get_texture (node);
+ int stride;
+ int len;
+ guchar *data;
+ char *b64;
+
+ start_node (p, "texture");
+ append_rect_param (p, "bounds", &node->bounds);
+ /* TODO: width and height here are unnecessary and can later be computed from the data length? */
+ append_float_param (p, "width", gdk_texture_get_width (texture));
+ append_float_param (p, "height", gdk_texture_get_height (texture));
+
+ stride = 4 * gdk_texture_get_width (texture);
+ len = sizeof (guchar) * stride * gdk_texture_get_height (texture);
+ data = g_malloc (len);
+ gdk_texture_download (texture, data, stride);
+
+ b64 = g_base64_encode (data, len);
+
+ _indent (p);
+ g_string_append_printf (p->str, "texture: \"data:;base64,%s\";\n", b64);
+ end_node (p);
+
+ g_free (b64);
+ g_free (data);
+ }
+ break;
+
+ case GSK_TEXT_NODE:
+ {
+ const guint n_glyphs = gsk_text_node_get_num_glyphs (node);
+ const PangoGlyphInfo *glyph;
+ PangoFontDescription *desc;
+ char *font_name;
+ guint i;
+ start_node (p, "text");
+
+ _indent (p);
+ desc = pango_font_describe ((PangoFont *)gsk_text_node_peek_font (node));;
+ font_name = pango_font_description_to_string (desc);
+ g_string_append_printf (p->str, "font: \"%s\";\n", font_name);
+ g_free (font_name);
+ pango_font_description_free (desc);
+
+ append_float_param (p, "x", gsk_text_node_get_x (node));
+ append_float_param (p, "y", gsk_text_node_get_y (node));
+ append_rgba_param (p, "color", gsk_text_node_peek_color (node));
+
+ _indent (p);
+ g_string_append (p->str, "glyphs: ");
+ glyph = gsk_text_node_peek_glyphs (node);
+ g_string_append_printf (p->str, "%u %i %i %i %i",
+ glyph->glyph, glyph->geometry.width,
+ glyph->geometry.x_offset, glyph->geometry.y_offset,
+ glyph->attr.is_cluster_start);
+
+ for (i = 1; i < n_glyphs; i ++)
+ {
+ glyph = gsk_text_node_peek_glyphs (node) + i;
+ g_string_append_printf (p->str, ", %u %i %i %i %i",
+ glyph->glyph, glyph->geometry.width,
+ glyph->geometry.x_offset, glyph->geometry.y_offset,
+ glyph->attr.is_cluster_start);
+ }
+
+ g_string_append_c (p->str, ';');
+ g_string_append_c (p->str, '\n');
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_DEBUG_NODE:
+ {
+ start_node (p, "debug");
+
+ _indent (p);
+ /* TODO: We potentially need to escape certain characters in the message */
+ g_string_append_printf (p->str, "message: \"%s\"\n", gsk_debug_node_get_message (node));
+
+ append_node_param (p, "child", gsk_debug_node_get_child (node));
+ end_node (p);
+ }
+ break;
+
+ case GSK_BLUR_NODE:
+ {
+ start_node (p, "blur");
+
+ append_float_param (p, "blur", gsk_blur_node_get_radius (node));
+ append_node_param (p, "child", gsk_blur_node_get_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_REPEAT_NODE:
+ {
+ start_node (p, "repeat");
+ append_rect_param (p, "bounds", &node->bounds);
+ append_rect_param (p, "child-bounds", gsk_repeat_node_peek_child_bounds (node));
+
+ append_node_param (p, "child", gsk_repeat_node_get_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_BLEND_NODE:
+ {
+ start_node (p, "blend");
+
+ _indent (p);
+ /* TODO: (de)serialize enums! */
+ g_string_append_printf (p->str, "mode = %d\n", gsk_blend_node_get_blend_mode (node));
+ append_node_param (p, "top", gsk_blend_node_get_top_child (node));
+ append_node_param (p, "bottom", gsk_blend_node_get_bottom_child (node));
+
+ end_node (p);
+ }
+ break;
+
+ case GSK_NOT_A_RENDER_NODE:
+ g_assert_not_reached ();
+ break;
+
+ case GSK_CAIRO_NODE:
+ case GSK_REPEATING_LINEAR_GRADIENT_NODE:
+ default:
+ g_error ("Unhandled node: %s", node->node_class->type_name);
+ break;
+ }
+}
+
+char *
+gsk_render_node_serialize_to_string (GskRenderNode *root)
+{
+ Printer p;
+
+ printer_init (&p);
+ render_node_print (&p, root);
+
+ return g_string_free (p.str, FALSE);
+}
diff --git a/gsk/gskrendernodeparserprivate.h b/gsk/gskrendernodeparserprivate.h
new file mode 100644
index 0000000000..9d72643c00
--- /dev/null
+++ b/gsk/gskrendernodeparserprivate.h
@@ -0,0 +1,11 @@
+
+#ifndef __GSK_RENDER_NODE_PARSER_PRIVATE_H__
+#define __GSK_RENDER_NODE_PARSER_PRIVATE_H__
+
+#include "gskrendernode.h"
+
+GskRenderNode * gsk_render_node_deserialize_from_bytes (GBytes *bytes,
+ GError **error);
+char * gsk_render_node_serialize_to_string (GskRenderNode *root);
+
+#endif
diff --git a/gsk/meson.build b/gsk/meson.build
index 912c5ed0f8..bd0830b7cf 100644
--- a/gsk/meson.build
+++ b/gsk/meson.build
@@ -34,6 +34,7 @@ gsk_private_sources = files([
'gskdebug.c',
'gskprivate.c',
'gskprofiler.c',
+ 'gskrendernodeparser.c',
'gl/gskshaderbuilder.c',
'gl/gskglprofiler.c',
'gl/gskglrenderer.c',
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