#include "style.h"
+#include <stdio.h>
+#include <fcntl.h>
-extern ChimaraGlkPrivate *glk_data;
+extern GPrivate *glk_data_key;
+static gboolean chimara_style_initialized = FALSE;
/**
* glk_set_style:
- * @styl The style to apply
+ * @styl: The style to apply
*
- * This changes the style of the current output stream. After a style change,
- * new text which is printed to that stream will be given the new style. For a
- * window stream, the text will appear in that style. For other types of
- * streams, this has no effect.
+ * Changes the style of the current output stream. @styl should be one of the
+ * <code>style_</code> constants listed above. However, any value is actually
+ * legal; if the interpreter does not recognize the style value, it will treat
+ * it as %style_Normal.
+ * <note><para>
+ * This policy allows for the future definition of styles without breaking old
+ * Glk libraries.
+ * </para></note>
*/
void
-glk_set_style(glui32 style)
+glk_set_style(glui32 styl)
{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
g_return_if_fail(glk_data->current_stream != NULL);
- glk_set_style_stream(glk_data->current_stream, style);
+ glk_set_style_stream(glk_data->current_stream, styl);
}
/* Internal function: mapping from style enum to tag name */
-gchar*
+static gchar *
get_tag_name(glui32 style)
{
switch(style) {
return "normal";
}
+/**
+ * glk_set_style_stream:
+ * @str: Output stream to change the style of
+ * @styl: The style to apply
+ *
+ * This changes the style of the stream @str. See glk_set_style().
+ */
void
-glk_set_style_stream(strid_t stream, glui32 style) {
- stream->style = get_tag_name(style);
+glk_set_style_stream(strid_t str, glui32 styl) {
+ str->style = get_tag_name(styl);
}
/* Internal function: call this to initialize the default styles to a textbuffer. */
{
g_return_if_fail(buffer != NULL);
- gtk_text_buffer_create_tag(buffer, "normal", NULL);
- gtk_text_buffer_create_tag(buffer, "emphasized", "style", PANGO_STYLE_ITALIC, NULL);
- gtk_text_buffer_create_tag(buffer, "preformatted", "font-desc", glk_data->monospace_font_desc, NULL);
- gtk_text_buffer_create_tag(buffer, "header", "size-points", 16.0, "weight", PANGO_WEIGHT_BOLD, NULL);
- gtk_text_buffer_create_tag(buffer, "subheader", "size-points", 12.0, "weight", PANGO_WEIGHT_BOLD, NULL);
- gtk_text_buffer_create_tag(buffer, "alert", "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
- gtk_text_buffer_create_tag(buffer, "note", "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
- gtk_text_buffer_create_tag(buffer, "block-quote", "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, NULL);
- gtk_text_buffer_create_tag(buffer, "input", NULL);
- gtk_text_buffer_create_tag(buffer, "user1", NULL);
- gtk_text_buffer_create_tag(buffer, "user2", NULL);
+ if( G_UNLIKELY(!chimara_style_initialized) ) {
+ style_init();
+ }
+
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ g_hash_table_foreach(glk_data->default_styles, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
+}
+
+static void
+style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table)
+{
+ gtk_text_tag_table_add(tag_table, tag);
}
void
+style_init()
+{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ GtkTextTag *tag;
+
+ /* Create the CSS file scanner */
+ GScanner *scanner = g_scanner_new(NULL);
+ int f = open(glk_data->css_file, O_RDONLY);
+ g_return_if_fail(f != -1);
+ g_scanner_input_file(scanner, f);
+ scanner->input_name = glk_data->css_file;
+ scanner->config->cset_identifier_first = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ#";
+ scanner->config->cset_identifier_nth = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_0123456789";
+ scanner->config->symbol_2_token = TRUE;
+ scanner->config->cpair_comment_single = NULL;
+
+ /* Initialise the default styles */
+ g_hash_table_insert(glk_data->default_styles, "normal", gtk_text_tag_new("normal"));
+
+ tag = gtk_text_tag_new("emphasized");
+ g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
+ g_hash_table_insert(glk_data->default_styles, "emphasized", tag);
+
+ tag = gtk_text_tag_new("preformatted");
+ g_object_set(tag, "font-desc", glk_data->monospace_font_desc, NULL);
+ g_hash_table_insert(glk_data->default_styles, "preformatted", tag);
+
+ tag = gtk_text_tag_new("header");
+ g_object_set(tag, "size-points", 18.0, "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(glk_data->default_styles, "header", tag);
+
+ tag = gtk_text_tag_new("subheader");
+ g_object_set(tag, "size-points", 14.0, "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(glk_data->default_styles, "subheader", tag);
+
+ tag = gtk_text_tag_new("alert");
+ g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(glk_data->default_styles, "alert", tag);
+
+ tag = gtk_text_tag_new("note");
+ g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(glk_data->default_styles, "note", tag);
+
+ tag = gtk_text_tag_new("block-quote");
+ g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, NULL);
+ g_hash_table_insert(glk_data->default_styles, "block-quote", tag);
+
+ g_hash_table_insert(glk_data->default_styles, "input", gtk_text_tag_new("input"));
+ g_hash_table_insert(glk_data->default_styles, "user1", gtk_text_tag_new("user1"));
+ g_hash_table_insert(glk_data->default_styles, "user2", gtk_text_tag_new("user2"));
+
+ /* Run the scanner over the CSS file */
+ while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
+ if( !style_accept_style_identifier(scanner) )
+ break;
+ }
+
+ g_scanner_destroy(scanner);
+}
+
+static gboolean
+style_accept(GScanner *scanner, GTokenType token)
+{
+ if( g_scanner_get_next_token(scanner) != token ) {
+ g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
+ return FALSE;
+ } else {
+ return TRUE;
+ }
+}
+
+static gboolean
+style_accept_style_identifier(GScanner *scanner)
+{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ GtkTextTag *current_tag;
+ GTokenType token = g_scanner_get_next_token(scanner);
+ GTokenValue value = g_scanner_cur_value(scanner);
+
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: style identifier expected");
+ return FALSE;
+ }
+
+ printf("Identifier: %s\n", value.v_identifier);
+ current_tag = g_hash_table_lookup(glk_data->default_styles, value.v_identifier);
+
+ if(current_tag == NULL) {
+ g_scanner_error(scanner, "CSS Error: invalid style identifier");
+ return FALSE;
+ }
+
+ if( !style_accept(scanner, '{') )
+ return FALSE;
+
+ while( g_scanner_peek_next_token(scanner) != '}') {
+ if( !style_accept_style_hint(scanner, current_tag) )
+ return FALSE;
+ }
+
+ if( !style_accept(scanner, '}') )
+ return FALSE;
+
+ return TRUE;
+}
+
+static gboolean
+style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag)
+{
+ GTokenType token = g_scanner_get_next_token(scanner);
+ GTokenValue value = g_scanner_cur_value(scanner);
+ gchar *hint;
+
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: style hint expected");
+ return FALSE;
+ }
+
+ hint = g_strdup(value.v_identifier);
+ printf("Hint: %s\n", hint);
+
+ if( !style_accept(scanner, ':') )
+ return FALSE;
+
+ token = g_scanner_get_next_token(scanner);
+ value = g_scanner_cur_value(scanner);
+
+ if( !strcmp(hint, "font-family") ) {
+ if(token != G_TOKEN_STRING) {
+ g_scanner_error(scanner, "CSS Error: string expected");
+ return FALSE;
+ }
+ g_object_set(current_tag, "family", value.v_string, "family-set", TRUE, NULL);
+ }
+ else if( !strcmp(hint, "font-weight") ) {
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: bold/normal expected");
+ return FALSE;
+ }
+
+ if( !strcmp(value.v_identifier, "bold") )
+ g_object_set(current_tag, "weight", PANGO_WEIGHT_BOLD, "weight-set", TRUE, NULL);
+ else if( !strcmp(value.v_identifier, "normal") )
+ g_object_set(current_tag, "weight", PANGO_WEIGHT_NORMAL, "weight-set", TRUE, NULL);
+ else {
+ g_scanner_error(scanner, "CSS Error: bold/normal expected");
+ return FALSE;
+ }
+ }
+ else if( !strcmp(hint, "font-style") ) {
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: italic/normal expected");
+ return FALSE;
+ }
+
+ if( !strcmp(value.v_identifier, "italic") )
+ g_object_set(current_tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
+ else if( !strcmp(value.v_identifier, "normal") )
+ g_object_set(current_tag, "style", PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
+ else {
+ g_scanner_error(scanner, "CSS Error: italic/normal expected");
+ return FALSE;
+ }
+ }
+ else if( !strcmp(hint, "font-size") ) {
+ if(token == G_TOKEN_INT)
+ g_object_set(current_tag, "size-points", (float)value.v_int, "size-set", TRUE, NULL);
+ else if(token == G_TOKEN_FLOAT)
+ g_object_set(current_tag, "size-points", value.v_float, "size-set", TRUE, NULL);
+ else {
+ g_scanner_error(scanner, "CSS Error: integer or float expected");
+ return FALSE;
+ }
+ }
+ else if( !strcmp(hint, "color") ) {
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: hex color expected");
+ return FALSE;
+ }
+ g_object_set(current_tag, "foreground", value.v_identifier, "foreground-set", TRUE, NULL);
+ }
+ else if( !strcmp(hint, "background-color") ) {
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: hex color expected");
+ return FALSE;
+ }
+ g_object_set(current_tag, "background", value.v_identifier, "background-set", TRUE, NULL);
+ }
+ else if( !strcmp(hint, "text-align") ) {
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: left/right/center expected");
+ return FALSE;
+ }
+
+ if( !strcmp(value.v_identifier, "left") )
+ g_object_set(current_tag, "justification", GTK_JUSTIFY_LEFT, "justification-set", TRUE, NULL);
+ else if( !strcmp(value.v_identifier, "right") )
+ g_object_set(current_tag, "justification", GTK_JUSTIFY_RIGHT, "justification-set", TRUE, NULL);
+ else if( !strcmp(value.v_identifier, "center") )
+ g_object_set(current_tag, "justification", GTK_JUSTIFY_CENTER, "justification-set", TRUE, NULL);
+ else {
+ g_scanner_error(scanner, "CSS Error: left/right/center expected");
+ return FALSE;
+ }
+ }
+ else if( !strcmp(hint, "margin-left") ) {
+ if(token != G_TOKEN_INT) {
+ g_scanner_error(scanner, "CSS Error: integer expected");
+ return FALSE;
+ }
+ g_object_set(current_tag, "left-margin", value.v_int, "left-margin-set", TRUE, NULL);
+ }
+ else if( !strcmp(hint, "margin-right") ) {
+ if(token != G_TOKEN_INT) {
+ g_scanner_error(scanner, "CSS Error: integer expected");
+ return FALSE;
+ }
+ g_object_set(current_tag, "right-margin", value.v_int, "right-margin-set", TRUE, NULL);
+ }
+ else if( !strcmp(hint, "margin-top") ) {
+ if(token != G_TOKEN_INT) {
+ g_scanner_error(scanner, "CSS Error: integer expected");
+ return FALSE;
+ }
+ g_object_set(current_tag, "pixels-above-lines", value.v_int, "pixels-above-lines-set", TRUE, NULL);
+ }
+ else if( !strcmp(hint, "margin-bottom") ) {
+ if(token != G_TOKEN_INT) {
+ g_scanner_error(scanner, "CSS Error: integer expected");
+ return FALSE;
+ }
+ g_object_set(current_tag, "pixels-below-lines", value.v_int, "pixels-below-lines-set", TRUE, NULL);
+ }
+
+ else {
+ g_scanner_error(scanner, "CSS Error: invalid style hint %s", hint);
+ return FALSE;
+ }
+
+ if( !style_accept(scanner, ';') )
+ return FALSE;
+
+ return TRUE;
+}
+
+static void
color_format(glui32 val, gchar *buffer)
{
sprintf(buffer, "#%02X%02X%02X",
}
/* Internal function: changes a GTK tag to correspond with the given style. */
-void
+static void
apply_stylehint_to_tag(GtkTextTag *tag, glui32 hint, glsi32 val)
{
g_return_if_fail(tag != NULL);
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
GObject *tag_object = G_OBJECT(tag);
gint reverse_color = 0;
}
}
+/**
+ * glk_stylehint_set:
+ * @wintype: The window type to set a style hint on, or %wintype_AllTypes.
+ * @styl: The style to set a hint for.
+ * @hint: The type of style hint, one of the <code>stylehint_</code> constants.
+ * @val: The style hint. The meaning of this depends on @hint.
+ *
+ * Sets a hint about the appearance of one style for a particular type of
+ * window. You can also set wintype to %wintype_AllTypes, which sets a hint for
+ * all types of window.
+ * <note><para>
+ * There is no equivalent constant to set a hint for all styles of a single
+ * window type.
+ * </para></note>
+ */
void
-glk_stylehint_set(glui32 wintype, glui32 style, glui32 hint, glsi32 val)
+glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
{
-
- gchar *tag_name = get_tag_name(style);
+ gchar *tag_name = get_tag_name(styl);
/* Iterate over all the window and update their styles if nessecary */
winid_t win = glk_window_iterate(NULL, NULL);
{
return styl1 != styl2;
}
+
+glui32
+glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
+{
+ return FALSE;
+}
projects / rodin / chimara.git / blobdiff