/* * Copyright © 2019 Benjamin Otte * Timm Bäder * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library. If not, see . * * Authors: Benjamin Otte * Timm Bäder */ #include "config.h" #include "gskrendernodeparserprivate.h" #include "gskroundedrectprivate.h" #include "gskrendernodeprivate.h" #include "gsktransformprivate.h" #include "gdk/gdkrgbaprivate.h" #include "gdk/gdktextureprivate.h" #include #include "gtk/css/gtkcssdataurlprivate.h" #include "gtk/css/gtkcssparserprivate.h" #include "gtk/css/gtkcssserializerprivate.h" #ifdef CAIRO_HAS_SCRIPT_SURFACE #include #endif #ifdef HAVE_CAIRO_SCRIPT_INTERPRETER #include #endif typedef struct _Declaration Declaration; struct _Declaration { const char *name; gboolean (* parse_func) (GtkCssParser *parser, gpointer result); void (* clear_func) (gpointer data); gpointer result; }; static gboolean parse_rect (GtkCssParser *parser, gpointer 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_texture (GtkCssParser *parser, gpointer out_data) { GdkTexture *texture; GError *error = NULL; GtkCssLocation start_location; char *url, *scheme; start_location = *gtk_css_parser_get_start_location (parser); url = gtk_css_parser_consume_url (parser); if (url == NULL) return FALSE; scheme = g_uri_parse_scheme (url); if (scheme && g_ascii_strcasecmp (scheme, "data") == 0) { GInputStream *stream; GdkPixbuf *pixbuf; GBytes *bytes; texture = NULL; bytes = gtk_css_data_url_parse (url, NULL, &error); if (bytes) { stream = g_memory_input_stream_new_from_bytes (bytes); g_bytes_unref (bytes); pixbuf = gdk_pixbuf_new_from_stream (stream, NULL, &error); g_object_unref (stream); if (pixbuf != NULL) { texture = gdk_texture_new_for_pixbuf (pixbuf); g_object_unref (pixbuf); } } } else { GFile *file; file = gtk_css_parser_resolve_url (parser, url); if (file) { texture = gdk_texture_new_from_file (file, &error); g_object_unref (file); } else { texture = NULL; } } g_free (scheme); g_free (url); if (texture == NULL) { if (error) { gtk_css_parser_emit_error (parser, &start_location, gtk_css_parser_get_end_location (parser), error); g_clear_error (&error); } return FALSE; } *(GdkTexture **) out_data = texture; return TRUE; } static void clear_texture (gpointer inout_texture) { g_clear_object ((GdkTexture **) inout_texture); } static cairo_surface_t * csi_hooks_surface_create (void *closure, cairo_content_t content, double width, double height, long uid) { return cairo_surface_create_similar (closure, content, width, height); } static const cairo_user_data_key_t csi_hooks_key; static cairo_t * csi_hooks_context_create (void *closure, cairo_surface_t *surface) { cairo_t *cr = cairo_create (surface); cairo_set_user_data (cr, &csi_hooks_key, cairo_surface_reference (surface), (cairo_destroy_func_t) cairo_surface_destroy); return cr; } static void csi_hooks_context_destroy (void *closure, void *ptr) { cairo_surface_t *surface; cairo_t *cr; surface = cairo_get_user_data (ptr, &csi_hooks_key); cr = cairo_create (closure); cairo_set_source_surface (cr, surface, 0, 0); cairo_paint (cr); cairo_destroy (cr); } static gboolean parse_script (GtkCssParser *parser, gpointer out_data) { #ifdef HAVE_CAIRO_SCRIPT_INTERPRETER GError *error = NULL; GBytes *bytes; GtkCssLocation start_location; char *url, *scheme; cairo_script_interpreter_t *csi; cairo_script_interpreter_hooks_t hooks = { .surface_create = csi_hooks_surface_create, .context_create = csi_hooks_context_create, .context_destroy = csi_hooks_context_destroy, }; start_location = *gtk_css_parser_get_start_location (parser); url = gtk_css_parser_consume_url (parser); if (url == NULL) return FALSE; scheme = g_uri_parse_scheme (url); if (scheme && g_ascii_strcasecmp (scheme, "data") == 0) { bytes = gtk_css_data_url_parse (url, NULL, &error); } else { GFile *file; file = gtk_css_parser_resolve_url (parser, url); bytes = g_file_load_bytes (file, NULL, NULL, &error); g_object_unref (file); } g_free (scheme); g_free (url); if (bytes == NULL) { gtk_css_parser_emit_error (parser, &start_location, gtk_css_parser_get_end_location (parser), error); g_clear_error (&error); return FALSE; } hooks.closure = cairo_recording_surface_create (CAIRO_CONTENT_COLOR_ALPHA, NULL); csi = cairo_script_interpreter_create (); cairo_script_interpreter_install_hooks (csi, &hooks); cairo_script_interpreter_feed_string (csi, g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes)); g_bytes_unref (bytes); if (cairo_surface_status (hooks.closure) != CAIRO_STATUS_SUCCESS) { gtk_css_parser_error_value (parser, "Invalid Cairo script: %s", cairo_status_to_string (cairo_surface_status (hooks.closure))); cairo_script_interpreter_destroy (csi); return FALSE; } if (cairo_script_interpreter_destroy (csi) != CAIRO_STATUS_SUCCESS) { gtk_css_parser_error_value (parser, "Invalid Cairo script"); cairo_surface_destroy (hooks.closure); return FALSE; } *(cairo_surface_t **) out_data = hooks.closure; return TRUE; #else gtk_css_parser_warn (parser, GTK_CSS_PARSER_WARNING_UNIMPLEMENTED, gtk_css_parser_get_block_location (parser), gtk_css_parser_get_start_location (parser), "GTK was compiled with script interpreter support. Using fallback pixel data for Cairo node."); *(cairo_surface_t **) out_data = NULL; return TRUE; #endif } static void clear_surface (gpointer inout_surface) { g_clear_pointer ((cairo_surface_t **) inout_surface, cairo_surface_destroy); } static gboolean parse_rounded_rect (GtkCssParser *parser, gpointer out_rect) { graphene_rect_t r; graphene_size_t corners[4]; double d; guint i; if (!parse_rect (parser, &r)) return FALSE; if (!gtk_css_parser_try_delim (parser, '/')) { gsk_rounded_rect_init_from_rect (out_rect, &r, 0); return TRUE; } for (i = 0; i < 4; i++) { if (!gtk_css_parser_has_number (parser)) 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; if (gtk_css_parser_try_delim (parser, '/')) { gtk_css_parser_consume_token (parser); for (i = 0; i < 4; i++) { if (!gtk_css_parser_has_number (parser)) 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; } 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) { return gdk_rgba_parser_parse (parser, out_color); } static gboolean parse_double (GtkCssParser *parser, gpointer out_double) { return gtk_css_parser_consume_number (parser, out_double); } 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)) 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)) { gsk_transform_unref (transform); return FALSE; } *(GskTransform **) out_transform = transform; return TRUE; } static void clear_transform (gpointer inout_transform) { g_clear_pointer ((GskTransform **) inout_transform, gsk_transform_unref); } 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); g_free (*(char **) out_string); *(char **) out_string = s; return TRUE; } static void clear_string (gpointer inout_string) { g_clear_pointer ((char **) inout_string, g_free); } static gboolean parse_stops (GtkCssParser *parser, gpointer out_stops) { GArray *stops; GskColorStop stop; stops = g_array_new (FALSE, FALSE, sizeof (GskColorStop)); for (;;) { double dval; if (!gtk_css_parser_consume_number (parser, &dval)) goto error; stop.offset = dval; 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 TRUE; error: g_array_free (stops, TRUE); return FALSE; } static void clear_stops (gpointer inout_stops) { GArray **stops = (GArray **) inout_stops; if (*stops) { g_array_free (*stops, TRUE); *stops = NULL; } } static gboolean parse_float4 (GtkCssParser *parser, gpointer out_floats) { float *floats = (float *) out_floats; double d[4]; int i; for (i = 0; i < 4 && !gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_EOF); i ++) { if (!gtk_css_parser_consume_number (parser, &d[i])) return FALSE; } if (i == 0) { gtk_css_parser_error_syntax (parser, "Expected a color"); return FALSE; } for (; i < 4; i++) { d[i] = d[(i - 1) >> 1]; } for (i = 0; i < 4; i++) { floats[i] = d[i]; } return TRUE; } static gboolean parse_colors4 (GtkCssParser *parser, gpointer out_colors) { GdkRGBA colors[4]; int i; for (i = 0; i < 4 && !gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_EOF); i ++) { if (!gdk_rgba_parser_parse (parser, &colors[i])) return FALSE; } if (i == 0) { gtk_css_parser_error_syntax (parser, "Expected a color"); return FALSE; } for (; i < 4; i++) { colors[i] = colors[(i - 1) >> 1]; } memcpy (out_colors, colors, sizeof (GdkRGBA) * 4); return TRUE; } static gboolean parse_shadows (GtkCssParser *parser, gpointer out_shadows) { GArray *shadows = out_shadows; do { GskShadow shadow = { GDK_RGBA("000000"), 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 y offset"); if (gtk_css_parser_has_number (parser)) { 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); } while (gtk_css_parser_try_token (parser, GTK_CSS_TOKEN_COMMA)); return TRUE; } static void clear_shadows (gpointer inout_shadows) { g_array_set_size (*(GArray **) inout_shadows, 0); } static const struct { GskBlendMode mode; const char *name; } blend_modes[] = { { GSK_BLEND_MODE_DEFAULT, "normal" }, { GSK_BLEND_MODE_MULTIPLY, "multiply" }, { GSK_BLEND_MODE_SCREEN, "screen" }, { GSK_BLEND_MODE_OVERLAY, "overlay" }, { GSK_BLEND_MODE_DARKEN, "darken" }, { GSK_BLEND_MODE_LIGHTEN, "lighten" }, { GSK_BLEND_MODE_COLOR_DODGE, "color-dodge" }, { GSK_BLEND_MODE_COLOR_BURN, "color-burn" }, { GSK_BLEND_MODE_HARD_LIGHT, "hard-light" }, { GSK_BLEND_MODE_SOFT_LIGHT, "soft-light" }, { GSK_BLEND_MODE_DIFFERENCE, "difference" }, { GSK_BLEND_MODE_EXCLUSION, "exclusion" }, { GSK_BLEND_MODE_COLOR, "color" }, { GSK_BLEND_MODE_HUE, "hue" }, { GSK_BLEND_MODE_SATURATION, "saturation" }, { GSK_BLEND_MODE_LUMINOSITY, "luminosity" } }; static gboolean parse_blend_mode (GtkCssParser *parser, gpointer out_mode) { guint i; for (i = 0; i < G_N_ELEMENTS (blend_modes); i++) { if (gtk_css_parser_try_ident (parser, blend_modes[i].name)) { *(GskBlendMode *) out_mode = blend_modes[i].mode; return TRUE; } } return FALSE; } static PangoFont * font_from_string (const char *string) { PangoFontDescription *desc; PangoFontMap *font_map; PangoContext *context; PangoFont *font; desc = pango_font_description_from_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); return font; } #define MIN_ASCII_GLYPH 32 #define MAX_ASCII_GLYPH 127 /* exclusive */ #define N_ASCII_GLYPHS (MAX_ASCII_GLYPH - MIN_ASCII_GLYPH) static PangoGlyphString * create_ascii_glyphs (PangoFont *font) { PangoLanguage *language = pango_language_from_string ("en_US"); /* just pick one */ PangoCoverage *coverage; PangoAnalysis not_a_hack = { .shape_engine = NULL, /* unused */ .lang_engine = NULL, /* unused by pango_shape() */ .font = font, .level = 0, .gravity = PANGO_GRAVITY_SOUTH, .flags = 0, .script = PANGO_SCRIPT_COMMON, .language = language, .extra_attrs = NULL }; PangoGlyphString *result, *glyph_string; guint i; coverage = pango_font_get_coverage (font, language); for (i = MIN_ASCII_GLYPH; i < MAX_ASCII_GLYPH; i++) { if (!pango_coverage_get (coverage, i)) break; } pango_coverage_unref (coverage); if (i < MAX_ASCII_GLYPH) return NULL; result = pango_glyph_string_new (); pango_glyph_string_set_size (result, N_ASCII_GLYPHS); glyph_string = pango_glyph_string_new (); for (i = MIN_ASCII_GLYPH; i < MAX_ASCII_GLYPH; i++) { const char text[2] = { i, 0 }; PangoShapeFlags flags = 0; if (cairo_version () < CAIRO_VERSION_ENCODE (1, 17, 4)) flags = PANGO_SHAPE_ROUND_POSITIONS; pango_shape_with_flags (text, 1, text, 1, ¬_a_hack, glyph_string, flags); if (glyph_string->num_glyphs != 1) { pango_glyph_string_free (glyph_string); pango_glyph_string_free (result); return NULL; } result->glyphs[i - MIN_ASCII_GLYPH] = glyph_string->glyphs[0]; } pango_glyph_string_free (glyph_string); return result; } static gboolean parse_font (GtkCssParser *parser, gpointer out_font) { PangoFont *font; char *s; s = gtk_css_parser_consume_string (parser); if (s == NULL) return FALSE; font = font_from_string (s); if (font == NULL) { gtk_css_parser_error_syntax (parser, "This font does not exist."); return FALSE; } *((PangoFont**)out_font) = font; g_free (s); return TRUE; } static void clear_font (gpointer inout_font) { g_clear_object ((PangoFont **) inout_font); } static gboolean parse_glyphs (GtkCssParser *parser, gpointer out_glyphs) { PangoGlyphString *glyph_string; glyph_string = pango_glyph_string_new (); do { PangoGlyphInfo gi = { 0, { 0, 0, 0}, { 1 } }; double d, d2; int i; if (gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_STRING)) { char *s = gtk_css_parser_consume_string (parser); for (i = 0; s[i] != 0; i++) { if (s[i] < MIN_ASCII_GLYPH || s[i] >= MAX_ASCII_GLYPH) { gtk_css_parser_error_value (parser, "Unsupported character %d in string", i); } gi.glyph = PANGO_GLYPH_INVALID_INPUT - MAX_ASCII_GLYPH + s[i]; pango_glyph_string_set_size (glyph_string, glyph_string->num_glyphs + 1); glyph_string->glyphs[glyph_string->num_glyphs - 1] = gi; } g_free (s); } else { if (!gtk_css_parser_consume_integer (parser, &i) || !gtk_css_parser_consume_number (parser, &d)) { pango_glyph_string_free (glyph_string); return FALSE; } gi.glyph = i; gi.geometry.width = (int) (d * PANGO_SCALE); if (gtk_css_parser_has_number (parser)) { if (!gtk_css_parser_consume_number (parser, &d) || !gtk_css_parser_consume_number (parser, &d2)) { pango_glyph_string_free (glyph_string); return FALSE; } gi.geometry.x_offset = (int) (d * PANGO_SCALE); gi.geometry.y_offset = (int) (d2 * PANGO_SCALE); if (gtk_css_parser_try_ident (parser, "same-cluster")) gi.attr.is_cluster_start = 0; else gi.attr.is_cluster_start = 1; } pango_glyph_string_set_size (glyph_string, glyph_string->num_glyphs + 1); glyph_string->glyphs[glyph_string->num_glyphs - 1] = gi; } } while (gtk_css_parser_try_token (parser, GTK_CSS_TOKEN_COMMA)); *((PangoGlyphString **)out_glyphs) = glyph_string; return TRUE; } static void clear_glyphs (gpointer inout_glyphs) { g_clear_pointer ((PangoGlyphString **) inout_glyphs, pango_glyph_string_free); } static gboolean parse_node (GtkCssParser *parser, gpointer out_node); static void clear_node (gpointer inout_node) { g_clear_pointer ((GskRenderNode **) inout_node, gsk_render_node_unref); } static GskRenderNode * parse_container_node (GtkCssParser *parser) { GPtrArray *nodes; const GtkCssToken *token; GskRenderNode *node; 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; /* We don't want a semicolon here, but the parse_node function will figure * that out itself and return an error if we encounter one. */ gtk_css_parser_start_semicolon_block (parser, GTK_CSS_TOKEN_OPEN_CURLY); if (parse_node (parser, &node)) g_ptr_array_add (nodes, node); gtk_css_parser_end_block (parser); } node = gsk_container_node_new ((GskRenderNode **) nodes->pdata, nodes->len); g_ptr_array_unref (nodes); return node; } static guint parse_declarations (GtkCssParser *parser, const Declaration *declarations, guint n_declarations) { guint parsed = 0; guint i; g_assert (n_declarations < 8 * sizeof (guint)); while (!gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_EOF)) { gtk_css_parser_start_semicolon_block (parser, GTK_CSS_TOKEN_OPEN_CURLY); for (i = 0; i < n_declarations; i++) { if (gtk_css_parser_try_ident (parser, declarations[i].name)) { if (!gtk_css_parser_try_token (parser, GTK_CSS_TOKEN_COLON)) { gtk_css_parser_error_syntax (parser, "Expected ':' after variable declaration"); } else { if (parsed & (1 << i)) { gtk_css_parser_warn_syntax (parser, "Variable \"%s\" defined multiple times", declarations[i].name); /* Unset, just to be sure */ parsed &= ~(1 << i); if (declarations[i].clear_func) declarations[i].clear_func (declarations[i].result); } if (!declarations[i].parse_func (parser, declarations[i].result)) { /* nothing to do */ } else if (!gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_EOF)) { gtk_css_parser_error_syntax (parser, "Expected ';' at end of statement"); if (declarations[i].clear_func) declarations[i].clear_func (declarations[i].result); } else { parsed |= (1 << i); } } break; } } if (i == n_declarations) { if (gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_IDENT)) gtk_css_parser_error_syntax (parser, "No variable named \"%s\"", gtk_css_parser_get_token (parser)->string.string); else gtk_css_parser_error_syntax (parser, "Expected a variable name"); } gtk_css_parser_end_block (parser); } return parsed; } static GdkTexture * create_default_texture (void) { static const guint32 pixels[100] = { 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0, 0, 0, 0, 0, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC, 0xFFFF00CC }; GBytes *bytes; GdkTexture *texture; bytes = g_bytes_new_static ((guchar *) pixels, 400); texture = gdk_memory_texture_new (10, 10, GDK_MEMORY_DEFAULT, bytes, 40); g_bytes_unref (bytes); return texture; } static GskRenderNode * create_default_render_node (void) { return gsk_color_node_new (&GDK_RGBA("FF00CC"), &GRAPHENE_RECT_INIT (0, 0, 50, 50)); } static GskRenderNode * parse_color_node (GtkCssParser *parser) { graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 50, 50); GdkRGBA color = GDK_RGBA("FF00CC"); const Declaration declarations[] = { { "bounds", parse_rect, NULL, &bounds }, { "color", parse_color, NULL, &color }, }; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); return gsk_color_node_new (&color, &bounds); } static GskRenderNode * parse_linear_gradient_node_internal (GtkCssParser *parser, gboolean repeating) { graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 50, 50); graphene_point_t start = GRAPHENE_POINT_INIT (0, 0); graphene_point_t end = GRAPHENE_POINT_INIT (0, 50); GArray *stops = NULL; const Declaration declarations[] = { { "bounds", parse_rect, NULL, &bounds }, { "start", parse_point, NULL, &start }, { "end", parse_point, NULL, &end }, { "stops", parse_stops, clear_stops, &stops }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (stops == NULL) { GskColorStop from = { 0.0, GDK_RGBA("AAFF00") }; GskColorStop to = { 1.0, GDK_RGBA("FF00CC") }; stops = g_array_new (FALSE, FALSE, sizeof (GskColorStop)); g_array_append_val (stops, from); g_array_append_val (stops, to); } if (repeating) result = gsk_repeating_linear_gradient_node_new (&bounds, &start, &end, (GskColorStop *) stops->data, stops->len); else result = gsk_linear_gradient_node_new (&bounds, &start, &end, (GskColorStop *) stops->data, stops->len); g_array_free (stops, TRUE); return result; } static GskRenderNode * parse_linear_gradient_node (GtkCssParser *parser) { return parse_linear_gradient_node_internal (parser, FALSE); } static GskRenderNode * parse_repeating_linear_gradient_node (GtkCssParser *parser) { return parse_linear_gradient_node_internal (parser, TRUE); } static GskRenderNode * parse_radial_gradient_node_internal (GtkCssParser *parser, gboolean repeating) { graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 50, 50); graphene_point_t center = GRAPHENE_POINT_INIT (25, 25); double hradius = 25.0; double vradius = 25.0; double start = 0; double end = 1.0; GArray *stops = NULL; const Declaration declarations[] = { { "bounds", parse_rect, NULL, &bounds }, { "center", parse_point, NULL, ¢er }, { "hradius", parse_double, NULL, &hradius }, { "vradius", parse_double, NULL, &vradius }, { "start", parse_double, NULL, &start }, { "end", parse_double, NULL, &end }, { "stops", parse_stops, clear_stops, &stops }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (stops == NULL) { GskColorStop from = { 0.0, GDK_RGBA("AAFF00") }; GskColorStop to = { 1.0, GDK_RGBA("FF00CC") }; stops = g_array_new (FALSE, FALSE, sizeof (GskColorStop)); g_array_append_val (stops, from); g_array_append_val (stops, to); } if (repeating) result = gsk_repeating_radial_gradient_node_new (&bounds, ¢er, hradius, vradius, start, end, (GskColorStop *) stops->data, stops->len); else result = gsk_radial_gradient_node_new (&bounds, ¢er, hradius, vradius, start, end, (GskColorStop *) stops->data, stops->len); g_array_free (stops, TRUE); return result; } static GskRenderNode * parse_radial_gradient_node (GtkCssParser *parser) { return parse_radial_gradient_node_internal (parser, FALSE); } static GskRenderNode * parse_repeating_radial_gradient_node (GtkCssParser *parser) { return parse_radial_gradient_node_internal (parser, TRUE); } static GskRenderNode * parse_conic_gradient_node (GtkCssParser *parser) { graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 50, 50); graphene_point_t center = GRAPHENE_POINT_INIT (25, 25); double rotation = 0.0; GArray *stops = NULL; const Declaration declarations[] = { { "bounds", parse_rect, NULL, &bounds }, { "center", parse_point, NULL, ¢er }, { "rotation", parse_double, NULL, &rotation }, { "stops", parse_stops, clear_stops, &stops }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (stops == NULL) { GskColorStop from = { 0.0, GDK_RGBA("AAFF00") }; GskColorStop to = { 1.0, GDK_RGBA("FF00CC") }; stops = g_array_new (FALSE, FALSE, sizeof (GskColorStop)); g_array_append_val (stops, from); g_array_append_val (stops, to); } result = gsk_conic_gradient_node_new (&bounds, ¢er, rotation, (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, 50, 50); GdkRGBA color = GDK_RGBA("000000"); double dx = 1, dy = 1, blur = 0, spread = 0; const Declaration declarations[] = { { "outline", parse_rounded_rect, NULL, &outline }, { "color", parse_color, NULL, &color }, { "dx", parse_double, NULL, &dx }, { "dy", parse_double, NULL, &dy }, { "spread", parse_double, NULL, &spread }, { "blur", parse_double, NULL, &blur } }; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); return gsk_inset_shadow_node_new (&outline, &color, dx, dy, spread, blur); } typedef union { gint32 i; double v[4]; } UniformValue; typedef struct { GskGLShader *shader; GskShaderArgsBuilder *args; } ShaderInfo; static void clear_shader_info (gpointer data) { ShaderInfo *info = data; g_clear_object (&info->shader); g_clear_pointer (&info->args, gsk_shader_args_builder_unref); } static gboolean parse_shader (GtkCssParser *parser, gpointer out_shader_info) { ShaderInfo *shader_info = out_shader_info; char *sourcecode = NULL; GBytes *bytes; GskGLShader *shader; if (!parse_string (parser, &sourcecode)) return FALSE; bytes = g_bytes_new_take (sourcecode, strlen (sourcecode)); shader = gsk_gl_shader_new_from_bytes (bytes); g_bytes_unref (bytes); shader_info->shader = shader; return TRUE; } static gboolean parse_uniform_value (GtkCssParser *parser, int idx, ShaderInfo *shader_info) { switch (gsk_gl_shader_get_uniform_type (shader_info->shader, idx)) { case GSK_GL_UNIFORM_TYPE_FLOAT: { double f; if (!gtk_css_parser_consume_number (parser, &f)) return FALSE; gsk_shader_args_builder_set_float (shader_info->args, idx, f); } break; case GSK_GL_UNIFORM_TYPE_INT: { int i; if (!gtk_css_parser_consume_integer (parser, &i)) return FALSE; gsk_shader_args_builder_set_int (shader_info->args, idx, i); } break; case GSK_GL_UNIFORM_TYPE_UINT: { int i; if (!gtk_css_parser_consume_integer (parser, &i) || i < 0) return FALSE; gsk_shader_args_builder_set_uint (shader_info->args, idx, i); } break; case GSK_GL_UNIFORM_TYPE_BOOL: { int i; if (!gtk_css_parser_consume_integer (parser, &i) || (i != 0 && i != 1)) return FALSE; gsk_shader_args_builder_set_bool (shader_info->args, idx, i); } break; case GSK_GL_UNIFORM_TYPE_VEC2: { double f0, f1; graphene_vec2_t v; if (!gtk_css_parser_consume_number (parser, &f0) || !gtk_css_parser_consume_number (parser, &f1)) return FALSE; graphene_vec2_init (&v, f0, f1); gsk_shader_args_builder_set_vec2 (shader_info->args, idx, &v); } break; case GSK_GL_UNIFORM_TYPE_VEC3: { double f0, f1, f2; graphene_vec3_t v; if (!gtk_css_parser_consume_number (parser, &f0) || !gtk_css_parser_consume_number (parser, &f1) || !gtk_css_parser_consume_number (parser, &f2)) return FALSE; graphene_vec3_init (&v, f0, f1, f2); gsk_shader_args_builder_set_vec3 (shader_info->args, idx, &v); } break; case GSK_GL_UNIFORM_TYPE_VEC4: { double f0, f1, f2, f3; graphene_vec4_t v; if (!gtk_css_parser_consume_number (parser, &f0) || !gtk_css_parser_consume_number (parser, &f1) || !gtk_css_parser_consume_number (parser, &f2) || !gtk_css_parser_consume_number (parser, &f3)) return FALSE; graphene_vec4_init (&v, f0, f1, f2, f3); gsk_shader_args_builder_set_vec4 (shader_info->args, idx, &v); } break; case GSK_GL_UNIFORM_TYPE_NONE: default: g_assert_not_reached (); break; } if (idx < gsk_gl_shader_get_n_uniforms (shader_info->shader)) { if (!gtk_css_parser_try_token (parser, GTK_CSS_TOKEN_COMMA)) return FALSE; } return TRUE; } static gboolean parse_shader_args (GtkCssParser *parser, gpointer data) { ShaderInfo *shader_info = data; int n_uniforms; int i; shader_info->args = gsk_shader_args_builder_new (shader_info->shader, NULL); n_uniforms = gsk_gl_shader_get_n_uniforms (shader_info->shader); for (i = 0; i < n_uniforms; i++) { if (!parse_uniform_value (parser, i, shader_info)) return FALSE; } return TRUE; } static GskRenderNode * parse_glshader_node (GtkCssParser *parser) { graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 50, 50); GskRenderNode *child[4] = { NULL, }; ShaderInfo shader_info = { NULL, NULL, }; const Declaration declarations[] = { { "bounds", parse_rect, NULL, &bounds }, { "sourcecode", parse_shader, NULL, &shader_info }, { "args", parse_shader_args, clear_shader_info, &shader_info }, { "child1", parse_node, clear_node, &child[0] }, { "child2", parse_node, clear_node, &child[1] }, { "child3", parse_node, clear_node, &child[2] }, { "child4", parse_node, clear_node, &child[3] }, }; GskGLShader *shader; GskRenderNode *node; GBytes *args = NULL; int len, i; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); for (len = 0; len < 4; len++) { if (child[len] == NULL) break; } shader = shader_info.shader; args = gsk_shader_args_builder_free_to_args (shader_info.args); node = gsk_gl_shader_node_new (shader, &bounds, args, child, len); g_bytes_unref (args); g_object_unref (shader); for (i = 0; i < 4; i++) { if (child[i]) gsk_render_node_unref (child[i]); } return node; } static GskRenderNode * parse_border_node (GtkCssParser *parser) { GskRoundedRect outline = GSK_ROUNDED_RECT_INIT (0, 0, 50, 50); float widths[4] = { 1, 1, 1, 1 }; GdkRGBA colors[4] = { GDK_RGBA("000"), GDK_RGBA("000"), GDK_RGBA("000"), GDK_RGBA("000") }; const Declaration declarations[] = { { "outline", parse_rounded_rect, NULL, &outline }, { "widths", parse_float4, NULL, &widths }, { "colors", parse_colors4, NULL, &colors } }; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); return gsk_border_node_new (&outline, widths, colors); } static GskRenderNode * parse_texture_node (GtkCssParser *parser) { graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 50, 50); GdkTexture *texture = NULL; const Declaration declarations[] = { { "bounds", parse_rect, NULL, &bounds }, { "texture", parse_texture, clear_texture, &texture } }; GskRenderNode *node; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (texture == NULL) texture = create_default_texture (); node = gsk_texture_node_new (texture, &bounds); g_object_unref (texture); return node; } static GskRenderNode * parse_cairo_node (GtkCssParser *parser) { graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 50, 50); GdkTexture *pixels = NULL; cairo_surface_t *surface = NULL; const Declaration declarations[] = { { "bounds", parse_rect, NULL, &bounds }, { "pixels", parse_texture, clear_texture, &pixels }, { "script", parse_script, clear_surface, &surface } }; GskRenderNode *node; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); node = gsk_cairo_node_new (&bounds); if (surface != NULL) { cairo_t *cr = gsk_cairo_node_get_draw_context (node); cairo_set_source_surface (cr, surface, 0, 0); cairo_paint (cr); cairo_destroy (cr); } else if (pixels != NULL) { cairo_t *cr = gsk_cairo_node_get_draw_context (node); surface = gdk_texture_download_surface (pixels); cairo_set_source_surface (cr, surface, 0, 0); cairo_paint (cr); cairo_destroy (cr); } else { /* do nothing */ } g_clear_object (&pixels); g_clear_pointer (&surface, cairo_surface_destroy); return node; } static GskRenderNode * parse_outset_shadow_node (GtkCssParser *parser) { GskRoundedRect outline = GSK_ROUNDED_RECT_INIT (0, 0, 50, 50); GdkRGBA color = GDK_RGBA("000000"); double dx = 1, dy = 1, blur = 0, spread = 0; const Declaration declarations[] = { { "outline", parse_rounded_rect, NULL, &outline }, { "color", parse_color, NULL, &color }, { "dx", parse_double, NULL, &dx }, { "dy", parse_double, NULL, &dy }, { "spread", parse_double, NULL, &spread }, { "blur", parse_double, NULL, &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, clear_transform, &transform }, { "child", parse_node, clear_node, &child }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); /* 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 = 0.5; const Declaration declarations[] = { { "opacity", parse_double, NULL, &opacity }, { "child", parse_node, clear_node, &child }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); 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, clear_transform, &transform }, { "offset", parse_rect, NULL, &offset_rect }, { "child", parse_node, clear_node, &child } }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); 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, NULL, &progress }, { "start", parse_node, clear_node, &start }, { "end", parse_node, clear_node, &end }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (start == NULL) start = gsk_color_node_new (&GDK_RGBA("AAFF00"), &GRAPHENE_RECT_INIT (0, 0, 50, 50)); if (end == NULL) end = create_default_render_node (); result = gsk_cross_fade_node_new (start, end, progress); gsk_render_node_unref (start); gsk_render_node_unref (end); return result; } static GskRenderNode * parse_blend_node (GtkCssParser *parser) { GskRenderNode *bottom = NULL; GskRenderNode *top = NULL; GskBlendMode mode = GSK_BLEND_MODE_DEFAULT; const Declaration declarations[] = { { "mode", parse_blend_mode, NULL, &mode }, { "bottom", parse_node, clear_node, &bottom }, { "top", parse_node, clear_node, &top }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (bottom == NULL) bottom = gsk_color_node_new (&GDK_RGBA("AAFF00"), &GRAPHENE_RECT_INIT (0, 0, 50, 50)); if (top == NULL) top = create_default_render_node (); result = gsk_blend_node_new (bottom, top, mode); gsk_render_node_unref (bottom); gsk_render_node_unref (top); return result; } static GskRenderNode * parse_repeat_node (GtkCssParser *parser) { GskRenderNode *child = NULL; graphene_rect_t bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0); graphene_rect_t child_bounds = GRAPHENE_RECT_INIT (0, 0, 0, 0); const Declaration declarations[] = { { "child", parse_node, clear_node, &child }, { "bounds", parse_rect, NULL, &bounds }, { "child-bounds", parse_rect, NULL, &child_bounds }, }; GskRenderNode *result; guint parse_result; parse_result = parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); if (!(parse_result & (1 << 1))) gsk_render_node_get_bounds (child, &bounds); if (!(parse_result & (1 << 2))) gsk_render_node_get_bounds (child, &child_bounds); result = gsk_repeat_node_new (&bounds, child, &child_bounds); gsk_render_node_unref (child); return result; } static gboolean unpack_glyphs (PangoFont *font, PangoGlyphString *glyphs) { PangoGlyphString *ascii = NULL; guint i; for (i = 0; i < glyphs->num_glyphs; i++) { PangoGlyph glyph = glyphs->glyphs[i].glyph; if (glyph < PANGO_GLYPH_INVALID_INPUT - MAX_ASCII_GLYPH || glyph >= PANGO_GLYPH_INVALID_INPUT) continue; glyph = glyph - (PANGO_GLYPH_INVALID_INPUT - MAX_ASCII_GLYPH) - MIN_ASCII_GLYPH; if (ascii == NULL) { ascii = create_ascii_glyphs (font); if (ascii == NULL) return FALSE; } glyphs->glyphs[i].glyph = ascii->glyphs[glyph].glyph; glyphs->glyphs[i].geometry.width = ascii->glyphs[glyph].geometry.width; } g_clear_pointer (&ascii, pango_glyph_string_free); return TRUE; } static GskRenderNode * parse_text_node (GtkCssParser *parser) { PangoFont *font = NULL; graphene_point_t offset = GRAPHENE_POINT_INIT (0, 0); GdkRGBA color = GDK_RGBA("000000"); PangoGlyphString *glyphs = NULL; const Declaration declarations[] = { { "font", parse_font, clear_font, &font }, { "offset", parse_point, NULL, &offset }, { "color", parse_color, NULL, &color }, { "glyphs", parse_glyphs, clear_glyphs, &glyphs } }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (font == NULL) { font = font_from_string ("Cantarell 11"); g_assert (font); } if (!glyphs) { const char *text = "Hello"; PangoGlyphInfo gi = { 0, { 0, 0, 0}, { 1 } }; guint i; glyphs = pango_glyph_string_new (); pango_glyph_string_set_size (glyphs, strlen (text)); for (i = 0; i < strlen (text); i++) { gi.glyph = PANGO_GLYPH_INVALID_INPUT - MAX_ASCII_GLYPH + text[i]; glyphs->glyphs[i] = gi; } } if (!unpack_glyphs (font, glyphs)) { gtk_css_parser_error_value (parser, "Given font cannot decode the glyph text"); result = NULL; } else { result = gsk_text_node_new (font, glyphs, &color, &offset); if (result == NULL) { gtk_css_parser_error_value (parser, "Glyphs result in empty text"); } } g_object_unref (font); pango_glyph_string_free (glyphs); /* return anything, whatever, just not NULL */ if (result == NULL) result = create_default_render_node (); return result; } static GskRenderNode * parse_blur_node (GtkCssParser *parser) { GskRenderNode *child = NULL; double blur_radius = 1.0; const Declaration declarations[] = { { "blur", parse_double, NULL, &blur_radius }, { "child", parse_node, clear_node, &child }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); result = gsk_blur_node_new (child, blur_radius); gsk_render_node_unref (child); return result; } static GskRenderNode * parse_clip_node (GtkCssParser *parser) { GskRoundedRect clip = GSK_ROUNDED_RECT_INIT (0, 0, 50, 50); GskRenderNode *child = NULL; const Declaration declarations[] = { { "clip", parse_rounded_rect, NULL, &clip }, { "child", parse_node, clear_node, &child }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); if (gsk_rounded_rect_is_rectilinear (&clip)) result = gsk_clip_node_new (child, &clip.bounds); else result = gsk_rounded_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, 50, 50); GskRenderNode *child = NULL; const Declaration declarations[] = { { "clip", parse_rounded_rect, NULL, &clip }, { "child", parse_node, clear_node, &child }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); 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, clear_node, &child }, { "shadows", parse_shadows, clear_shadows, shadows } }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); if (shadows->len == 0) { GskShadow default_shadow = { GDK_RGBA("000000"), 1, 1, 0 }; g_array_append_val (shadows, default_shadow); } 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, clear_string, &message}, { "child", parse_node, clear_node, &child }, }; GskRenderNode *result; parse_declarations (parser, declarations, G_N_ELEMENTS(declarations)); if (child == NULL) child = create_default_render_node (); 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[] = { { "blend", parse_blend_node }, { "blur", parse_blur_node }, { "border", parse_border_node }, { "cairo", parse_cairo_node }, { "clip", parse_clip_node }, { "color", parse_color_node }, { "color-matrix", parse_color_matrix_node }, { "container", parse_container_node }, { "cross-fade", parse_cross_fade_node }, { "debug", parse_debug_node }, { "inset-shadow", parse_inset_shadow_node }, { "linear-gradient", parse_linear_gradient_node }, { "radial-gradient", parse_radial_gradient_node }, { "conic-gradient", parse_conic_gradient_node }, { "opacity", parse_opacity_node }, { "outset-shadow", parse_outset_shadow_node }, { "repeat", parse_repeat_node }, { "repeating-linear-gradient", parse_repeating_linear_gradient_node }, { "repeating-radial-gradient", parse_repeating_radial_gradient_node }, { "rounded-clip", parse_rounded_clip_node }, { "shadow", parse_shadow_node }, { "text", parse_text_node }, { "texture", parse_texture_node }, { "transform", parse_transform_node }, { "glshader", parse_glshader_node }, }; GskRenderNode **node_p = out_node; guint i; for (i = 0; i < G_N_ELEMENTS (node_parsers); i++) { if (gtk_css_parser_try_ident (parser, node_parsers[i].name)) { GskRenderNode *node; if (!gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_EOF)) { gtk_css_parser_error_syntax (parser, "Expected '{' after node name"); return FALSE; } gtk_css_parser_end_block_prelude (parser); node = node_parsers[i].func (parser); if (node) { if (!gtk_css_parser_has_token (parser, 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; } return node != NULL; } } if (gtk_css_parser_has_token (parser, GTK_CSS_TOKEN_IDENT)) gtk_css_parser_error_value (parser, "\"%s\" is not a valid node name", gtk_css_parser_get_token (parser)->string.string); else gtk_css_parser_error_syntax (parser, "Expected a node name"); return FALSE; } static void gsk_render_node_parser_error (GtkCssParser *parser, const GtkCssLocation *start, const GtkCssLocation *end, const GError *error, gpointer user_data) { struct { GskParseErrorFunc error_func; gpointer user_data; } *error_func_pair = user_data; if (error_func_pair->error_func) error_func_pair->error_func ((const GskParseLocation *)start, (const GskParseLocation *)end, error, error_func_pair->user_data); } GskRenderNode * gsk_render_node_deserialize_from_bytes (GBytes *bytes, GskParseErrorFunc error_func, gpointer user_data) { GskRenderNode *root = NULL; GtkCssParser *parser; struct { GskParseErrorFunc error_func; gpointer user_data; } error_func_pair = { error_func, user_data }; parser = gtk_css_parser_new_for_bytes (bytes, NULL, NULL, gsk_render_node_parser_error, &error_func_pair, 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); 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[3].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, float default_value) { /* Don't approximate-compare here, better be topo verbose */ if (value == default_value) return; _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_string_param (Printer *p, const char *param_name, const char *value) { _indent (p); g_string_append_printf (p->str, "%s: ", param_name); gtk_css_print_string (p->str, value, TRUE); 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 append_stops_param (Printer *p, const char *param_name, const GskColorStop *stops, gsize n_stops) { gsize i; _indent (p); g_string_append (p->str, param_name); g_string_append (p->str, ": "); for (i = 0; i < n_stops; i ++) { if (i > 0) g_string_append (p->str, ", "); string_append_double (p->str, stops[i].offset); g_string_append_c (p->str, ' '); append_rgba (p->str, &stops[i].color); } g_string_append (p->str, ";\n"); } static cairo_status_t cairo_write_array (void *closure, const unsigned char *data, unsigned int length) { g_byte_array_append (closure, data, length); return CAIRO_STATUS_SUCCESS; } static void cairo_destroy_array (gpointer array) { g_byte_array_free (array, TRUE); } static void append_escaping_newlines (GString *str, const char *string) { gsize len; do { len = strcspn (string, "\n"); g_string_append_len (str, string, len); string += len; g_string_append (str, "\\\n"); string++; } while (*string); } /* like g_base64 encode, but breaks lines * in CSS-compatible way */ static char * base64_encode_with_linebreaks (const guchar *data, gsize len) { gsize max; char *out; int state = 0, outlen; int save = 0; g_return_val_if_fail (data != NULL || len == 0, NULL); /* We can use a smaller limit here, since we know the saved state is 0, +1 is needed for trailing \0, also check for unlikely integer overflow */ g_return_val_if_fail (len < ((G_MAXSIZE - 1) / 4 - 1) * 3, NULL); max = (len / 3 + 1) * 4 + 1; max += 2 * (max / 76); out = g_malloc (max); outlen = g_base64_encode_step (data, len, TRUE, out, &state, &save); outlen += g_base64_encode_close (TRUE, out + outlen, &state, &save); out[outlen] = '\0'; return out; } void gsk_text_node_serialize_glyphs (GskRenderNode *node, GString *p) { const guint n_glyphs = gsk_text_node_get_num_glyphs (node); const PangoGlyphInfo *glyphs = gsk_text_node_get_glyphs (node, NULL); PangoFont *font = gsk_text_node_get_font (node); GString *str; guint i, j; PangoGlyphString *ascii; ascii = create_ascii_glyphs (font); str = g_string_new (""); for (i = 0; i < n_glyphs; i++) { if (ascii) { for (j = 0; j < ascii->num_glyphs; j++) { if (glyphs[i].glyph == ascii->glyphs[j].glyph && glyphs[i].geometry.width == ascii->glyphs[j].geometry.width && glyphs[i].geometry.x_offset == 0 && glyphs[i].geometry.y_offset == 0 && glyphs[i].attr.is_cluster_start) { switch (j + MIN_ASCII_GLYPH) { case '\\': g_string_append (str, "\\\\"); break; case '"': g_string_append (str, "\\\""); break; default: g_string_append_c (str, j + MIN_ASCII_GLYPH); break; } break; } else if (glyphs[i].glyph == ascii->glyphs[j].glyph) { if (glyphs[i].geometry.width != ascii->glyphs[j].geometry.width) g_print ("not ascii because of width (%d != %d)\n", glyphs[i].geometry.width, ascii->glyphs[j].geometry.width); if (glyphs[i].geometry.x_offset != 0 || glyphs[i].geometry.y_offset != 0) g_print ("not ascii because of offset\n"); if (!glyphs[i].attr.is_cluster_start) g_print ("not ascii because of cluster\n"); } } if (j != ascii->num_glyphs) continue; } if (str->len) { g_string_append_printf (p, "\"%s\", ", str->str); g_string_set_size (str, 0); } g_string_append_printf (p, "%u %g", glyphs[i].glyph, (double) glyphs[i].geometry.width / PANGO_SCALE); if (!glyphs[i].attr.is_cluster_start || glyphs[i].geometry.x_offset != 0 || glyphs[i].geometry.y_offset != 0) { g_string_append_printf (p, " %g %g", (double) glyphs[i].geometry.x_offset / PANGO_SCALE, (double) glyphs[i].geometry.y_offset / PANGO_SCALE); if (!glyphs[i].attr.is_cluster_start) g_string_append (p, " same-cluster"); } if (i + 1 < n_glyphs) g_string_append (p, ", "); } if (str->len) g_string_append_printf (p, "\"%s\"", str->str); g_string_free (str, TRUE); if (ascii) pango_glyph_string_free (ascii); } static void render_node_print (Printer *p, GskRenderNode *node) { char *b64; 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_get_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), 0.5f); 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_REPEATING_LINEAR_GRADIENT_NODE: case GSK_LINEAR_GRADIENT_NODE: { if (gsk_render_node_get_node_type (node) == GSK_REPEATING_LINEAR_GRADIENT_NODE) start_node (p, "repeating-linear-gradient"); else start_node (p, "linear-gradient"); append_rect_param (p, "bounds", &node->bounds); append_point_param (p, "start", gsk_linear_gradient_node_get_start (node)); append_point_param (p, "end", gsk_linear_gradient_node_get_end (node)); append_stops_param (p, "stops", gsk_linear_gradient_node_get_color_stops (node, NULL), gsk_linear_gradient_node_get_n_color_stops (node)); end_node (p); } break; case GSK_REPEATING_RADIAL_GRADIENT_NODE: case GSK_RADIAL_GRADIENT_NODE: { if (gsk_render_node_get_node_type (node) == GSK_REPEATING_RADIAL_GRADIENT_NODE) start_node (p, "repeating-radial-gradient"); else start_node (p, "radial-gradient"); append_rect_param (p, "bounds", &node->bounds); append_point_param (p, "center", gsk_radial_gradient_node_get_center (node)); append_float_param (p, "hradius", gsk_radial_gradient_node_get_hradius (node), 0.0f); append_float_param (p, "vradius", gsk_radial_gradient_node_get_vradius (node), 0.0f); append_float_param (p, "start", gsk_radial_gradient_node_get_start (node), 0.0f); append_float_param (p, "end", gsk_radial_gradient_node_get_end (node), 1.0f); append_stops_param (p, "stops", gsk_radial_gradient_node_get_color_stops (node, NULL), gsk_radial_gradient_node_get_n_color_stops (node)); end_node (p); } break; case GSK_CONIC_GRADIENT_NODE: { start_node (p, "conic-gradient"); append_rect_param (p, "bounds", &node->bounds); append_point_param (p, "center", gsk_conic_gradient_node_get_center (node)); append_float_param (p, "rotation", gsk_conic_gradient_node_get_rotation (node), 0.0f); append_stops_param (p, "stops", gsk_conic_gradient_node_get_color_stops (node, NULL), gsk_conic_gradient_node_get_n_color_stops (node)); end_node (p); } break; case GSK_OPACITY_NODE: { start_node (p, "opacity"); append_float_param (p, "opacity", gsk_opacity_node_get_opacity (node), 0.5f); append_node_param (p, "child", gsk_opacity_node_get_child (node)); end_node (p); } break; case GSK_OUTSET_SHADOW_NODE: { const GdkRGBA *color = gsk_outset_shadow_node_get_color (node); start_node (p, "outset-shadow"); append_float_param (p, "blur", gsk_outset_shadow_node_get_blur_radius (node), 0.0f); if (!gdk_rgba_equal (color, &GDK_RGBA("000"))) append_rgba_param (p, "color", color); append_float_param (p, "dx", gsk_outset_shadow_node_get_dx (node), 1.0f); append_float_param (p, "dy", gsk_outset_shadow_node_get_dy (node), 1.0f); append_rounded_rect_param (p, "outline", gsk_outset_shadow_node_get_outline (node)); append_float_param (p, "spread", gsk_outset_shadow_node_get_spread (node), 0.0f); end_node (p); } break; case GSK_CLIP_NODE: { start_node (p, "clip"); append_rect_param (p, "clip", gsk_clip_node_get_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_get_clip (node)); append_node_param (p, "child", gsk_rounded_clip_node_get_child (node)); end_node (p); } break; case GSK_TRANSFORM_NODE: { GskTransform *transform = gsk_transform_node_get_transform (node); start_node (p, "transform"); if (gsk_transform_get_category (transform) != GSK_TRANSFORM_CATEGORY_IDENTITY) append_transform_param (p, "transform", transform); 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"); if (!graphene_matrix_is_identity (gsk_color_matrix_node_get_color_matrix (node))) append_matrix_param (p, "matrix", gsk_color_matrix_node_get_color_matrix (node)); if (!graphene_vec4_equal (gsk_color_matrix_node_get_color_offset (node), graphene_vec4_zero ())) append_vec4_param (p, "offset", gsk_color_matrix_node_get_color_offset (node)); append_node_param (p, "child", gsk_color_matrix_node_get_child (node)); end_node (p); } break; case GSK_BORDER_NODE: { const GdkRGBA *colors = gsk_border_node_get_colors (node); const float *widths = gsk_border_node_get_widths (node); guint i, n; start_node (p, "border"); if (!gdk_rgba_equal (&colors[3], &colors[1])) n = 4; else if (!gdk_rgba_equal (&colors[2], &colors[0])) n = 3; else if (!gdk_rgba_equal (&colors[1], &colors[0])) n = 2; else if (!gdk_rgba_equal (&colors[0], &GDK_RGBA("000000"))) n = 1; else n = 0; if (n > 0) { _indent (p); g_string_append (p->str, "colors: "); for (i = 0; i < n; i++) { if (i > 0) g_string_append_c (p->str, ' '); append_rgba (p->str, &colors[i]); } g_string_append (p->str, ";\n"); } append_rounded_rect_param (p, "outline", gsk_border_node_get_outline (node)); if (widths[3] != widths[1]) n = 4; else if (widths[2] != widths[0]) n = 3; else if (widths[1] != widths[0]) n = 2; else if (widths[0] != 1.0) n = 1; else n = 0; if (n > 0) { _indent (p); g_string_append (p->str, "widths: "); for (i = 0; i < n; i++) { if (i > 0) g_string_append_c (p->str, ' '); string_append_double (p->str, widths[i]); } 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_get_shadow (node, i); char *color; if (i > 0) g_string_append (p->str, ", "); 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); if (s->radius > 0) { g_string_append_c (p->str, ' '); string_append_double (p->str, s->radius); } 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: { const GdkRGBA *color = gsk_inset_shadow_node_get_color (node); start_node (p, "inset-shadow"); append_float_param (p, "blur", gsk_inset_shadow_node_get_blur_radius (node), 0.0f); if (!gdk_rgba_equal (color, &GDK_RGBA("000"))) append_rgba_param (p, "color", color); append_float_param (p, "dx", gsk_inset_shadow_node_get_dx (node), 1.0f); append_float_param (p, "dy", gsk_inset_shadow_node_get_dy (node), 1.0f); append_rounded_rect_param (p, "outline", gsk_inset_shadow_node_get_outline (node)); append_float_param (p, "spread", gsk_inset_shadow_node_get_spread (node), 0.0f); end_node (p); } break; case GSK_TEXTURE_NODE: { GdkTexture *texture = gsk_texture_node_get_texture (node); cairo_surface_t *surface; GByteArray *array; start_node (p, "texture"); append_rect_param (p, "bounds", &node->bounds); surface = gdk_texture_download_surface (texture); array = g_byte_array_new (); cairo_surface_write_to_png_stream (surface, cairo_write_array, array); _indent (p); g_string_append (p->str, "texture: url(\"data:image/png;base64,"); b64 = base64_encode_with_linebreaks (array->data, array->len); append_escaping_newlines (p->str, b64); g_free (b64); g_string_append (p->str, "\");\n"); end_node (p); g_byte_array_free (array, TRUE); cairo_surface_destroy (surface); } break; case GSK_TEXT_NODE: { const graphene_point_t *offset = gsk_text_node_get_offset (node); const GdkRGBA *color = gsk_text_node_get_color (node); PangoFont *font = gsk_text_node_get_font (node); PangoFontDescription *desc; char *font_name; start_node (p, "text"); if (!gdk_rgba_equal (color, &GDK_RGBA("000000"))) append_rgba_param (p, "color", color); _indent (p); desc = pango_font_describe (font); 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); _indent (p); g_string_append (p->str, "glyphs: "); gsk_text_node_serialize_glyphs (node, p->str); g_string_append_c (p->str, ';'); g_string_append_c (p->str, '\n'); if (!graphene_point_equal (offset, graphene_point_zero ())) append_point_param (p, "offset", offset); end_node (p); } break; case GSK_DEBUG_NODE: { const char *message = gsk_debug_node_get_message (node); start_node (p, "debug"); /* TODO: We potentially need to escape certain characters in the message */ if (message) { _indent (p); g_string_append_printf (p->str, "message: \"%s\";\n", message); } 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), 1.0f); append_node_param (p, "child", gsk_blur_node_get_child (node)); end_node (p); } break; case GSK_GL_SHADER_NODE: { GskGLShader *shader = gsk_gl_shader_node_get_shader (node); GBytes *args = gsk_gl_shader_node_get_args (node); start_node (p, "glshader"); append_rect_param (p, "bounds", &node->bounds); GBytes *bytes = gsk_gl_shader_get_source (shader); /* Ensure we are zero-terminated */ char *sourcecode = g_strndup (g_bytes_get_data (bytes, NULL), g_bytes_get_size (bytes)); append_string_param (p, "sourcecode", sourcecode); g_free (sourcecode); if (gsk_gl_shader_get_n_uniforms (shader) > 0) { GString *data = g_string_new (""); for (guint i = 0; i < gsk_gl_shader_get_n_uniforms (shader); i++) { if (i > 0) g_string_append (data, ", "); switch (gsk_gl_shader_get_uniform_type (shader, i)) { case GSK_GL_UNIFORM_TYPE_NONE: default: g_assert_not_reached (); break; case GSK_GL_UNIFORM_TYPE_FLOAT: { float value = gsk_gl_shader_get_arg_float (shader, args, i); string_append_double (data, value); } break; case GSK_GL_UNIFORM_TYPE_INT: { gint32 value = gsk_gl_shader_get_arg_int (shader, args, i); g_string_append_printf (data, "%d", value); } break; case GSK_GL_UNIFORM_TYPE_UINT: { guint32 value = gsk_gl_shader_get_arg_uint (shader, args, i); g_string_append_printf (data, "%u", value); } break; case GSK_GL_UNIFORM_TYPE_BOOL: { gboolean value = gsk_gl_shader_get_arg_bool (shader, args, i); g_string_append_printf (data, "%d", value); } break; case GSK_GL_UNIFORM_TYPE_VEC2: { graphene_vec2_t value; gsk_gl_shader_get_arg_vec2 (shader, args, i, &value); string_append_double (data, graphene_vec2_get_x (&value)); g_string_append (data, " "); string_append_double (data, graphene_vec2_get_y (&value)); } break; case GSK_GL_UNIFORM_TYPE_VEC3: { graphene_vec3_t value; gsk_gl_shader_get_arg_vec3 (shader, args, i, &value); string_append_double (data, graphene_vec3_get_x (&value)); g_string_append (data, " "); string_append_double (data, graphene_vec3_get_y (&value)); g_string_append (data, " "); string_append_double (data, graphene_vec3_get_z (&value)); } break; case GSK_GL_UNIFORM_TYPE_VEC4: { graphene_vec4_t value; gsk_gl_shader_get_arg_vec4 (shader, args, i, &value); string_append_double (data, graphene_vec4_get_x (&value)); g_string_append (data, " "); string_append_double (data, graphene_vec4_get_y (&value)); g_string_append (data, " "); string_append_double (data, graphene_vec4_get_z (&value)); g_string_append (data, " "); string_append_double (data, graphene_vec4_get_w (&value)); } break; } } _indent (p); g_string_append_printf (p->str, "args: %s;\n", data->str); g_string_free (data, TRUE); } for (guint i = 0; i < gsk_gl_shader_node_get_n_children (node); i ++) { GskRenderNode *child = gsk_gl_shader_node_get_child (node, i); char *name; name = g_strdup_printf ("child%d", i + 1); append_node_param (p, name, child); g_free (name); } end_node (p); } break; case GSK_REPEAT_NODE: { GskRenderNode *child = gsk_repeat_node_get_child (node); const graphene_rect_t *child_bounds = gsk_repeat_node_get_child_bounds (node); start_node (p, "repeat"); if (!graphene_rect_equal (&node->bounds, &child->bounds)) append_rect_param (p, "bounds", &node->bounds); if (!graphene_rect_equal (child_bounds, &child->bounds)) append_rect_param (p, "child-bounds", child_bounds); append_node_param (p, "child", gsk_repeat_node_get_child (node)); end_node (p); } break; case GSK_BLEND_NODE: { GskBlendMode mode = gsk_blend_node_get_blend_mode (node); guint i; start_node (p, "blend"); if (mode != GSK_BLEND_MODE_DEFAULT) { _indent (p); for (i = 0; i < G_N_ELEMENTS (blend_modes); i++) { if (blend_modes[i].mode == mode) { g_string_append_printf (p->str, "mode: %s;\n", blend_modes[i].name); break; } } } append_node_param (p, "bottom", gsk_blend_node_get_bottom_child (node)); append_node_param (p, "top", gsk_blend_node_get_top_child (node)); end_node (p); } break; case GSK_NOT_A_RENDER_NODE: g_assert_not_reached (); break; case GSK_CAIRO_NODE: { cairo_surface_t *surface = gsk_cairo_node_get_surface (node); GByteArray *array; start_node (p, "cairo"); append_rect_param (p, "bounds", &node->bounds); if (surface != NULL) { array = g_byte_array_new (); cairo_surface_write_to_png_stream (surface, cairo_write_array, array); _indent (p); g_string_append (p->str, "pixels: url(\"data:image/png;base64,"); b64 = base64_encode_with_linebreaks (array->data, array->len); append_escaping_newlines (p->str, b64); g_free (b64); g_string_append (p->str, "\");\n"); g_byte_array_free (array, TRUE); #ifdef CAIRO_HAS_SCRIPT_SURFACE if (cairo_surface_get_type (surface) == CAIRO_SURFACE_TYPE_RECORDING) { static const cairo_user_data_key_t cairo_is_stupid_key; cairo_device_t *script; array = g_byte_array_new (); script = cairo_script_create_for_stream (cairo_write_array, array); if (cairo_script_from_recording_surface (script, surface) == CAIRO_STATUS_SUCCESS) { _indent (p); g_string_append (p->str, "script: url(\"data:;base64,"); b64 = base64_encode_with_linebreaks (array->data, array->len); append_escaping_newlines (p->str, b64); g_free (b64); g_string_append (p->str, "\");\n"); } /* because Cairo is stupid and writes to the device after we finished it, * we can't just g_byte_array_free (array, TRUE); * but have to */ g_byte_array_set_size (array, 0); cairo_device_set_user_data (script, &cairo_is_stupid_key, array, cairo_destroy_array); cairo_device_destroy (script); } #endif } end_node (p); } break; default: g_error ("Unhandled node: %s", g_type_name_from_instance ((GTypeInstance *) node)); break; } } /** * gsk_render_node_serialize: * @node: a #GskRenderNode * * Serializes the @node for later deserialization via * gsk_render_node_deserialize(). No guarantees are made about the format * used other than that the same version of GTK will be able to deserialize * the result of a call to gsk_render_node_serialize() and * gsk_render_node_deserialize() will correctly reject files it cannot open * that were created with previous versions of GTK. * * The intended use of this functions is testing, benchmarking and debugging. * The format is not meant as a permanent storage format. * * Returns: a #GBytes representing the node. **/ GBytes * gsk_render_node_serialize (GskRenderNode *node) { Printer p; printer_init (&p); if (gsk_render_node_get_node_type (node) == GSK_CONTAINER_NODE) { guint i; for (i = 0; i < gsk_container_node_get_n_children (node); i ++) { GskRenderNode *child = gsk_container_node_get_child (node, i); render_node_print (&p, child); } } else { render_node_print (&p, node); } return g_string_free_to_bytes (p.str); }