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gsk: Implement parsing fill and stroke nodes
Make serialization and deserialization work for stroke and fill nodes.
This commit is contained in:
Matthias Clasen
parent
60e07335a1
commit
fc3c2e0942
@ -24,10 +24,12 @@
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#include "gskrendernodeparserprivate.h"
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#include "gskpath.h"
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#include "gskpathbuilder.h"
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#include "gskroundedrectprivate.h"
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#include "gskrendernodeprivate.h"
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#include "gskstroke.h"
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#include "gsktransformprivate.h"
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#include "gskenumtypes.h"
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#include "gdk/gdkrgbaprivate.h"
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#include "gdk/gdktextureprivate.h"
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@ -1176,6 +1178,26 @@ create_default_render_node (void)
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return gsk_color_node_new (&GDK_RGBA("FF00CC"), &GRAPHENE_RECT_INIT (0, 0, 50, 50));
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}
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static GskPath *
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create_default_path (void)
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{
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GskPathBuilder *builder;
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guint i;
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builder = gsk_path_builder_new ();
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gsk_path_builder_move_to (builder, 25, 0);
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for (i = 1; i < 5; i++)
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{
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gsk_path_builder_line_to (builder,
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sin (i * G_PI * 0.8) * 25 + 25,
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-cos (i * G_PI * 0.8) * 25 + 25);
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}
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gsk_path_builder_close (builder);
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return gsk_path_builder_free_to_path (builder);
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}
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static GskRenderNode *
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parse_color_node (GtkCssParser *parser,
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Context *context)
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@ -2099,6 +2121,165 @@ parse_rounded_clip_node (GtkCssParser *parser,
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return result;
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}
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static gboolean
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parse_path (GtkCssParser *parser,
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Context *context,
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gpointer out_path)
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{
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GskPath *path;
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char *str = NULL;
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if (!parse_string (parser, context, &str))
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return FALSE;
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path = gsk_path_parse (str);
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g_free (str);
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if (path == NULL)
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{
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gtk_css_parser_error_value (parser, "Invalid path");
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return FALSE;
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}
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*((GskPath **) out_path) = path;
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return TRUE;
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}
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static void
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clear_path (gpointer inout_path)
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{
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g_clear_pointer ((GskPath **) inout_path, gsk_path_unref);
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}
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static gboolean
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parse_enum (GtkCssParser *parser,
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GType type,
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gpointer out_value)
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{
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GEnumClass *class;
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GEnumValue *v;
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char *enum_name;
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enum_name = gtk_css_parser_consume_ident (parser);
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if (enum_name == NULL)
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return FALSE;
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class = g_type_class_ref (type);
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v = g_enum_get_value_by_nick (class, enum_name);
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if (v == NULL)
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{
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gtk_css_parser_error_value (parser, "Unknown value \"%s\" for enum \"%s\"",
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enum_name, g_type_name (type));
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g_free (enum_name);
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g_type_class_unref (class);
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return FALSE;
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}
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*(int*)out_value = v->value;
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g_free (enum_name);
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g_type_class_unref (class);
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return TRUE;
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}
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static gboolean
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parse_fill_rule (GtkCssParser *parser,
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Context *context,
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gpointer out_rule)
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{
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return parse_enum (parser, GSK_TYPE_FILL_RULE, out_rule);
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}
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static GskRenderNode *
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parse_fill_node (GtkCssParser *parser,
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Context *context)
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{
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GskRenderNode *child = NULL;
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GskPath *path = NULL;
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int rule = GSK_FILL_RULE_WINDING;
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const Declaration declarations[] = {
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{ "child", parse_node, clear_node, &child },
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{ "path", parse_path, clear_path, &path },
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{ "fill-rule", parse_fill_rule, NULL, &rule },
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};
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GskRenderNode *result;
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parse_declarations (parser, context, declarations, G_N_ELEMENTS (declarations));
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if (child == NULL)
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child = create_default_render_node ();
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if (path == NULL)
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path = create_default_path ();
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result = gsk_fill_node_new (child, path, rule);
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gsk_path_unref (path);
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gsk_render_node_unref (child);
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return result;
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}
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static gboolean
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parse_line_cap (GtkCssParser *parser,
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Context *context,
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gpointer out)
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{
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return parse_enum (parser, GSK_TYPE_LINE_CAP, out);
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}
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static gboolean
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parse_line_join (GtkCssParser *parser,
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Context *context,
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gpointer out)
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{
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return parse_enum (parser, GSK_TYPE_LINE_JOIN, out);
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}
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static GskRenderNode *
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parse_stroke_node (GtkCssParser *parser,
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Context *context)
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{
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GskRenderNode *child = NULL;
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GskPath *path = NULL;
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double line_width = 1.0;
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int line_cap = GSK_LINE_CAP_BUTT;
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int line_join = GSK_LINE_JOIN_MITER;
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double miter_limit = 4.0;
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GskStroke *stroke;
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const Declaration declarations[] = {
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{ "child", parse_node, clear_node, &child },
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{ "path", parse_path, clear_path, &path },
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{ "line-width", parse_positive_double, NULL, &line_width },
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{ "line-cap", parse_line_cap, NULL, &line_cap },
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{ "line-join", parse_line_join, NULL, &line_join },
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{ "miter-limit", parse_positive_double, NULL, &miter_limit }
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};
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GskRenderNode *result;
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parse_declarations (parser, context, declarations, G_N_ELEMENTS (declarations));
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if (child == NULL)
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child = create_default_render_node ();
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if (path == NULL)
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path = create_default_path ();
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stroke = gsk_stroke_new (line_width);
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gsk_stroke_set_line_cap (stroke, line_cap);
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gsk_stroke_set_line_join (stroke, line_join);
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gsk_stroke_set_miter_limit (stroke, miter_limit);
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result = gsk_stroke_node_new (child, path, stroke);
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gsk_path_unref (path);
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gsk_stroke_free (stroke);
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gsk_render_node_unref (child);
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return result;
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}
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static GskRenderNode *
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parse_shadow_node (GtkCssParser *parser,
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Context *context)
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@ -2181,6 +2362,8 @@ parse_node (GtkCssParser *parser,
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{ "repeating-linear-gradient", parse_repeating_linear_gradient_node },
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{ "repeating-radial-gradient", parse_repeating_radial_gradient_node },
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{ "rounded-clip", parse_rounded_clip_node },
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{ "fill", parse_fill_node },
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{ "stroke", parse_stroke_node },
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{ "shadow", parse_shadow_node },
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{ "text", parse_text_node },
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{ "texture", parse_texture_node },
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@ -2843,8 +3026,11 @@ append_escaping_newlines (GString *str,
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len = strcspn (string, "\n");
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g_string_append_len (str, string, len);
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string += len;
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if (*string)
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{
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g_string_append (str, "\\\n");
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string++;
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}
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} while (*string);
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}
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@ -3045,6 +3231,55 @@ gsk_text_node_serialize_glyphs (GskRenderNode *node,
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pango_glyph_string_free (ascii);
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}
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static const char *
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enum_to_nick (GType type,
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int value)
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{
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GEnumClass *class;
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GEnumValue *v;
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class = g_type_class_ref (type);
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v = g_enum_get_value (class, value);
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g_type_class_unref (class);
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return v->value_nick;
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}
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static void
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append_enum_param (Printer *p,
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const char *param_name,
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GType type,
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int value)
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{
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_indent (p);
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g_string_append_printf (p->str, "%s: ", param_name);
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g_string_append (p->str, enum_to_nick (type, value));
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g_string_append_c (p->str, ';');
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g_string_append_c (p->str, '\n');
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}
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static void
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append_path_param (Printer *p,
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const char *param_name,
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GskPath *path)
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{
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char *str, *s;
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_indent (p);
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g_string_append (p->str, "path: \"\\\n");
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str = gsk_path_to_string (path);
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/* Put each command on a new line */
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for (s = str; *s; s++)
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{
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if (*s == ' ' &&
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(s[1] == 'M' || s[1] == 'C' || s[1] == 'Z' || s[1] == 'L'))
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*s = '\n';
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}
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append_escaping_newlines (p->str, str);
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g_string_append (p->str, "\";\n");
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g_free (str);
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}
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static void
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render_node_print (Printer *p,
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GskRenderNode *node)
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@ -3220,14 +3455,11 @@ render_node_print (Printer *p,
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case GSK_FILL_NODE:
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{
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char *path_str;
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start_node (p, "fill", node_name);
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append_node_param (p, "child", gsk_fill_node_get_child (node));
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path_str = gsk_path_to_string (gsk_fill_node_get_path (node));
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append_string_param (p, "path", path_str);
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g_free (path_str);
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append_path_param (p, "path", gsk_fill_node_get_path (node));
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append_enum_param (p, "fill-rule", GSK_TYPE_FILL_RULE, gsk_fill_node_get_fill_rule (node));
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end_node (p);
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}
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@ -3236,17 +3468,17 @@ render_node_print (Printer *p,
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case GSK_STROKE_NODE:
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{
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const GskStroke *stroke;
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char *path_str;
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start_node (p, "stroke", node_name);
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append_node_param (p, "child", gsk_stroke_node_get_child (node));
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path_str = gsk_path_to_string (gsk_stroke_node_get_path (node));
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append_string_param (p, "path", path_str);
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g_free (path_str);
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append_path_param (p, "path", gsk_stroke_node_get_path (node));
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stroke = gsk_stroke_node_get_stroke (node);
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append_float_param (p, "line-width", gsk_stroke_get_line_width (stroke), 0.0);
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append_float_param (p, "line-width", gsk_stroke_get_line_width (stroke), 0.0f);
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append_enum_param (p, "line-cap", GSK_TYPE_LINE_CAP, gsk_stroke_get_line_cap (stroke));
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append_enum_param (p, "line-join", GSK_TYPE_LINE_JOIN, gsk_stroke_get_line_join (stroke));
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append_float_param (p, "miter-limit", gsk_stroke_get_miter_limit (stroke), 4.0f);
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end_node (p);
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}
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