+#include <stdio.h>
+#include <string.h>
+#include "chimara-glk-private.h"
+#include "glk.h"
#include "style.h"
+#include "magic.h"
+#include "stream.h"
+#include "strio.h"
-extern ChimaraGlkPrivate *glk_data;
+extern GPrivate *glk_data_key;
+
+static gboolean style_accept(GScanner *scanner, GTokenType token);
+static gboolean style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk);
+static gboolean style_accept_style_hint(GScanner *scanner, GtkTextTag *current_tag);
+static void style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table);
+static void style_table_copy(gpointer key, gpointer tag, gpointer target_table);
+static void text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list);
+GtkTextTag* gtk_text_tag_copy(GtkTextTag *tag);
/**
* glk_set_style:
* @styl: The style to apply
*
* 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.
+ * <code>style_</code> constants. 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.
void
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, styl);
}
+static const gchar* TAG_NAMES[] = {
+ "normal",
+ "emphasized",
+ "preformatted",
+ "header",
+ "subheader",
+ "alert",
+ "note",
+ "block-quote",
+ "input",
+ "user1",
+ "user2"
+};
+
/* Internal function: mapping from style enum to tag name */
-static gchar *
+static gchar*
get_tag_name(glui32 style)
{
- switch(style) {
- case style_Normal: return "normal";
- case style_Emphasized: return "emphasized";
- case style_Preformatted: return "preformatted";
- case style_Header: return "header";
- case style_Subheader: return "subheader";
- case style_Alert: return "alert";
- case style_Note: return "note";
- case style_BlockQuote: return "block-quote";
- case style_Input: return "input";
- case style_User1: return "user1";
- case style_User2: return "user2";
+ if(style >= style_NUMSTYLES) {
+ WARNING("Unsupported style");
+ return "normal";
+ } else {
+ return (gchar*) TAG_NAMES[style];
}
-
- WARNING("Unsupported style");
- return "normal";
}
/**
*/
void
glk_set_style_stream(strid_t str, glui32 styl) {
+ if(str->window == NULL)
+ return;
+
+ flush_window_buffer(str->window);
str->style = get_tag_name(styl);
}
+/* Internal function: call this to initialize the layout of the 'more' prompt. */
+void
+style_init_more_prompt(winid_t win)
+{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ win->pager_layout = gtk_widget_create_pango_layout(win->widget, "More");
+ pango_layout_set_attributes(win->pager_layout, glk_data->pager_attr_list);
+}
+
/* Internal function: call this to initialize the default styles to a textbuffer. */
void
style_init_textbuffer(GtkTextBuffer *buffer)
{
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);
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ /* Copy the current text tags to the textbuffer's tag table */
+ g_hash_table_foreach(glk_data->current_styles->text_buffer, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
+}
+
+
+/* Internal function: call this to initialize the default styles to a textgrid. */
+void
+style_init_textgrid(GtkTextBuffer *buffer)
+{
+ g_return_if_fail(buffer != NULL);
+
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ /* Copy the current text tags to the textgrid's tag table */
+ g_hash_table_foreach(glk_data->current_styles->text_grid, style_add_tag_to_textbuffer, gtk_text_buffer_get_tag_table(buffer));
+}
+
+/* Internal function used to iterate over the default text tag table, applying them to a textbuffer */
+static void
+style_add_tag_to_textbuffer(gpointer key, gpointer tag, gpointer tag_table)
+{
+ gtk_text_tag_table_add( tag_table, gtk_text_tag_copy(tag) );
}
+/* Internal function used to iterate over a style table, copying it */
static void
-color_format(glui32 val, gchar *buffer)
+style_table_copy(gpointer key, gpointer tag, gpointer target_table)
+{
+ g_return_if_fail(key != NULL);
+ g_return_if_fail(tag != NULL);
+ g_return_if_fail(target_table != NULL);
+
+ g_hash_table_insert(target_table, key, gtk_text_tag_copy( GTK_TEXT_TAG(tag) ));
+}
+
+/* Internal function that copies a text tag */
+GtkTextTag *
+gtk_text_tag_copy(GtkTextTag *tag)
+{
+ GtkTextTag *copy;
+
+ g_return_val_if_fail(tag != NULL, NULL);
+
+ copy = gtk_text_tag_new(tag->name);
+ gtk_text_attributes_copy_values(tag->values, copy->values);
+
+ #define _COPY_FLAG(flag) copy->flag = tag->flag
+ _COPY_FLAG (bg_color_set);
+ _COPY_FLAG (bg_color_set);
+ _COPY_FLAG (bg_stipple_set);
+ _COPY_FLAG (fg_color_set);
+ _COPY_FLAG (fg_stipple_set);
+ _COPY_FLAG (justification_set);
+ _COPY_FLAG (left_margin_set);
+ _COPY_FLAG (indent_set);
+ _COPY_FLAG (rise_set);
+ _COPY_FLAG (strikethrough_set);
+ _COPY_FLAG (right_margin_set);
+ _COPY_FLAG (pixels_above_lines_set);
+ _COPY_FLAG (pixels_below_lines_set);
+ _COPY_FLAG (pixels_inside_wrap_set);
+ _COPY_FLAG (tabs_set);
+ _COPY_FLAG (underline_set);
+ _COPY_FLAG (wrap_mode_set);
+ _COPY_FLAG (bg_full_height_set);
+ _COPY_FLAG (invisible_set);
+ _COPY_FLAG (editable_set);
+ _COPY_FLAG (language_set);
+ #undef _COPY_FLAG
+
+ /* Copy the data that was added manually */
+ gpointer reverse_color = g_object_get_data( G_OBJECT(tag), "reverse_color" );
+
+ if(reverse_color)
+ g_object_set_data( G_OBJECT(copy), "reverse_color", reverse_color );
+
+ return copy;
+}
+
+/* Internal function that reads the default styles from a CSS file */
+void
+style_init(ChimaraGlk *glk)
{
+ CHIMARA_GLK_USE_PRIVATE(glk, priv);
+
+ GHashTable *default_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
+ GHashTable *default_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
+ GHashTable *current_text_grid_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
+ GHashTable *current_text_buffer_styles = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_object_unref);
+ GtkTextTag *tag;
+
+ PangoFontDescription *default_font_desc = pango_font_description_from_string("Serif");
+ PangoFontDescription *monospace_font_desc = pango_font_description_from_string("Monospace");
+
+ /* Initialise the default styles for a text grid */
+ tag = gtk_text_tag_new("normal");
+ g_object_set(tag, "font-desc", monospace_font_desc, NULL);
+ g_hash_table_insert(default_text_grid_styles, "normal", tag);
+
+ tag = gtk_text_tag_new("emphasized");
+ g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
+ g_hash_table_insert(default_text_grid_styles, "emphasized", tag);
+
+ tag = gtk_text_tag_new("preformatted");
+ g_object_set(tag, "font-desc", monospace_font_desc, NULL);
+ g_hash_table_insert(default_text_grid_styles, "preformatted", tag);
+
+ tag = gtk_text_tag_new("header");
+ g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(default_text_grid_styles, "header", tag);
+
+ tag = gtk_text_tag_new("subheader");
+ g_object_set(tag, "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(default_text_grid_styles, "subheader", tag);
+
+ tag = gtk_text_tag_new("alert");
+ g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(default_text_grid_styles, "alert", tag);
+
+ tag = gtk_text_tag_new("note");
+ g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(default_text_grid_styles, "note", tag);
+
+ tag = gtk_text_tag_new("block-quote");
+ g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
+ g_hash_table_insert(default_text_grid_styles, "block-quote", tag);
+
+ g_hash_table_insert(default_text_grid_styles, "input", gtk_text_tag_new("input"));
+ g_hash_table_insert(default_text_grid_styles, "user1", gtk_text_tag_new("user1"));
+ g_hash_table_insert(default_text_grid_styles, "user2", gtk_text_tag_new("user2"));
+
+ tag = gtk_text_tag_new("hyperlink");
+ g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
+ g_hash_table_insert(default_text_grid_styles, "hyperlink", tag);
+
+ /* Tags for the textbuffer */
+ tag = gtk_text_tag_new("normal");
+ g_object_set(tag, "font-desc", default_font_desc, NULL);
+ g_hash_table_insert(default_text_buffer_styles, "normal", tag);
+
+ tag = gtk_text_tag_new("emphasized");
+ g_object_set(tag, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
+ g_hash_table_insert(default_text_buffer_styles, "emphasized", tag);
+
+ tag = gtk_text_tag_new("preformatted");
+ g_object_set(tag, "font-desc", monospace_font_desc, NULL);
+ g_hash_table_insert(default_text_buffer_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(default_text_buffer_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(default_text_buffer_styles, "subheader", tag);
+
+ tag = gtk_text_tag_new("alert");
+ g_object_set(tag, "foreground", "#aa0000", "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(default_text_buffer_styles, "alert", tag);
+
+ tag = gtk_text_tag_new("note");
+ g_object_set(tag, "foreground", "#aaaa00", "weight", PANGO_WEIGHT_BOLD, NULL);
+ g_hash_table_insert(default_text_buffer_styles, "note", tag);
+
+ tag = gtk_text_tag_new("block-quote");
+ g_object_set(tag, "justification", GTK_JUSTIFY_CENTER, "style", PANGO_STYLE_ITALIC, "style-set", TRUE, NULL);
+ g_hash_table_insert(default_text_buffer_styles, "block-quote", tag);
+
+ g_hash_table_insert(default_text_buffer_styles, "input", gtk_text_tag_new("input"));
+ g_hash_table_insert(default_text_buffer_styles, "user1", gtk_text_tag_new("user1"));
+ g_hash_table_insert(default_text_buffer_styles, "user2", gtk_text_tag_new("user2"));
+
+ tag = gtk_text_tag_new("hyperlink");
+ g_object_set(tag, "foreground", "#0000ff", "underline", PANGO_UNDERLINE_SINGLE, "underline-set", TRUE, NULL);
+ g_hash_table_insert(default_text_buffer_styles, "hyperlink", tag);
+
+ GtkTextTag *pager_tag = gtk_text_tag_new("pager");
+ g_object_set(pager_tag, "foreground", "#ffffff", "background", "#000000", NULL);
+ g_hash_table_insert(default_text_buffer_styles, "pager", pager_tag);
+
+ pango_font_description_free(default_font_desc);
+ pango_font_description_free(monospace_font_desc);
+
+ priv->default_styles->text_grid = default_text_grid_styles;
+ priv->default_styles->text_buffer = default_text_buffer_styles;
+ priv->current_styles->text_grid = current_text_grid_styles;
+ priv->current_styles->text_buffer = current_text_buffer_styles;
+
+ /* Set the current style to a copy of the default style */
+ copy_default_styles_to_current_styles(glk);
+
+ text_tag_to_attr_list(pager_tag, priv->pager_attr_list);
+}
+
+/* Reset style tables to the library's internal defaults */
+void
+reset_default_styles(ChimaraGlk *glk)
+{
+ /* TODO: write this function */
+}
+
+/* Copy the default styles to the current styles
+ FIXME: This function is temporary and will not be needed later on */
+void
+copy_default_styles_to_current_styles(ChimaraGlk *glk)
+{
+ CHIMARA_GLK_USE_PRIVATE(glk, priv);
+ g_hash_table_foreach(priv->default_styles->text_grid, style_table_copy, priv->current_styles->text_grid);
+ g_hash_table_foreach(priv->default_styles->text_buffer, style_table_copy, priv->current_styles->text_buffer);
+}
+
+/* Create the CSS file scanner */
+GScanner *
+create_css_file_scanner(void)
+{
+ GScanner *scanner = g_scanner_new(NULL);
+ scanner->config->cset_identifier_first = G_CSET_a_2_z G_CSET_A_2_Z "#";
+ scanner->config->cset_identifier_nth = G_CSET_a_2_z G_CSET_A_2_Z "-_" G_CSET_DIGITS;
+ scanner->config->symbol_2_token = TRUE;
+ scanner->config->cpair_comment_single = NULL;
+ scanner->config->scan_float = FALSE;
+ return scanner;
+}
+
+/* Run the scanner over the CSS file, overriding the default styles */
+void
+scan_css_file(GScanner *scanner, ChimaraGlk *glk)
+{
+ while( g_scanner_peek_next_token(scanner) != G_TOKEN_EOF) {
+ if( !style_accept_style_selector(scanner, glk) )
+ break;
+ }
+
+ g_scanner_destroy(scanner);
+}
+
+/* Internal function: parses a token */
+static gboolean
+style_accept(GScanner *scanner, GTokenType token)
+{
+ GTokenType next = g_scanner_get_next_token(scanner);
+ if(next != token) {
+ g_scanner_unexp_token(scanner, token, NULL, NULL, NULL, "CSS Error", 1);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+/* Internal function: parses a style selector */
+static gboolean
+style_accept_style_selector(GScanner *scanner, ChimaraGlk *glk)
+{
+ CHIMARA_GLK_USE_PRIVATE(glk, priv);
+
+ GtkTextTag *current_tag;
+ gchar *field;
+ GTokenType token = g_scanner_get_next_token(scanner);
+ GTokenValue value = g_scanner_cur_value(scanner);
+
+ if(
+ token != G_TOKEN_IDENTIFIER ||
+ ( strcmp(value.v_identifier, "buffer") && strcmp(value.v_identifier, "grid") )
+ ) {
+ g_scanner_error(scanner, "CSS Error: buffer/grid expected");
+ return FALSE;
+ }
+
+ field = g_strdup(value.v_identifier);
+
+ if( !style_accept(scanner, '.') )
+ return FALSE;
+
+ token = g_scanner_get_next_token(scanner);
+ value = g_scanner_cur_value(scanner);
+
+ if(token != G_TOKEN_IDENTIFIER) {
+ g_scanner_error(scanner, "CSS Error: style selector expected");
+ return FALSE;
+ }
+
+ if( !strcmp(field, "buffer") )
+ current_tag = g_hash_table_lookup(priv->default_styles->text_buffer, value.v_identifier);
+ else
+ current_tag = g_hash_table_lookup(priv->default_styles->text_grid, 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;
+}
+
+/* Internal function: parses a style hint */
+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);
+
+ 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;
+}
+
+/* Internal function: parses a glk color to a #hex-value */
+static void
+glkcolor_to_hex(glui32 val, gchar *buffer)
+{
+ g_return_if_fail(buffer != NULL);
+
sprintf(buffer, "#%02X%02X%02X",
((val & 0xff0000) >> 16),
((val & 0x00ff00) >> 8),
);
}
+/* Internal function: parses a glk color to a GdkColor */
+void
+glkcolor_to_gdkcolor(glui32 val, GdkColor *color)
+{
+ color->red = 256 * ((val & 0xff0000) >> 16);
+ color->green = 256 * ((val & 0x00ff00) >> 8);
+ color->blue = 256 * (val & 0x0000ff);
+}
+
+/* Internal function: parses a GdkColor to a glk color */
+static glui32
+gdkcolor_to_glkcolor(GdkColor *color)
+{
+ g_return_val_if_fail(color != NULL, 0);
+ return (glui32) color->pixel;
+}
+
/* Internal function: changes a GTK tag to correspond with the given style. */
static void
-apply_stylehint_to_tag(GtkTextTag *tag, glui32 hint, glsi32 val)
+apply_stylehint_to_tag(GtkTextTag *tag, glui32 wintype, 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;
- /* FIXME where should we keep track of this?
- g_object_get(tag, "reverse_color", &reverse_color, NULL);
- */
+ gint reverse_color = GPOINTER_TO_INT( g_object_get_data(tag_object, "reverse-color") );
int i = 0;
gchar color[20];
switch(hint) {
case stylehint_Indentation:
- g_object_set(tag_object, "left_margin", 5*val, NULL);
- g_object_set(tag_object, "right_margin", 5*val, NULL);
+ g_object_set(tag_object, "left-margin", 5*val, "left-margin-set", TRUE, NULL);
+ g_object_set(tag_object, "right-margin", 5*val, "right-margin-set", TRUE, NULL);
break;
case stylehint_ParaIndentation:
- g_object_set(tag_object, "indent", 5*val, NULL);
+ g_object_set(tag_object, "indent", 5*val, "indent-set", TRUE, NULL);
break;
case stylehint_Justification:
WARNING("Unknown justification");
i = GTK_JUSTIFY_LEFT;
}
- g_object_set(tag_object, "justification", i, NULL);
+ g_object_set(tag_object, "justification", i, "justification-set", TRUE, NULL);
break;
case stylehint_Weight:
case 1: i = PANGO_WEIGHT_BOLD; break;
default: WARNING("Unknown font weight");
}
- g_object_set(tag_object, "weight", i, NULL);
+ g_object_set(tag_object, "weight", i, "weight-set", TRUE, NULL);
break;
case stylehint_Size:
- g_object_set(tag_object, "size", 14+(2*val), NULL);
+ g_object_set(tag_object, "size", 14+(2*val), "size-set", TRUE, NULL);
break;
case stylehint_Oblique:
- g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, NULL);
+ g_object_set(tag_object, "style", val ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL, "style-set", TRUE, NULL);
break;
case stylehint_Proportional:
- g_object_set(tag_object, "font-desc", val ? glk_data->default_font_desc : glk_data->monospace_font_desc, NULL);
+ {
+ gchar *font_family;
+ GtkTextTag *font_tag = g_hash_table_lookup(
+ wintype == wintype_TextBuffer? glk_data->default_styles->text_buffer : glk_data->default_styles->text_grid,
+ val? "normal" : "preformatted");
+ g_object_get(font_tag, "family", &font_family, NULL);
+ g_object_set(tag_object, "family", font_family, "family-set", TRUE, NULL);
+ g_free(font_family);
+ }
break;
case stylehint_TextColor:
- color_format(val, color);
+ glkcolor_to_hex(val, color);
if(!reverse_color)
- g_object_set(tag_object, "foreground", color, NULL);
+ g_object_set(tag_object, "foreground", color, "foreground-set", TRUE, NULL);
else
- g_object_set(tag_object, "background", color, NULL);
+ g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
break;
case stylehint_BackColor:
- color_format(val, color);
+ glkcolor_to_hex(val, color);
if(!reverse_color)
- g_object_set(tag_object, "background", color, NULL);
+ g_object_set(tag_object, "background", color, "background-set", TRUE, NULL);
else
- g_object_set(tag_object, "foreground", color, NULL);
+ g_object_set(tag_object, "foreground", color, "background-set", TRUE, NULL);
break;
case stylehint_ReverseColor:
if(reverse_color != val) {
/* Flip the fore- and background colors */
- gchar* foreground_color;
- gchar* background_color;
- g_object_get(tag_object, "foreground", &foreground_color, NULL);
- g_object_get(tag_object, "background", &background_color, NULL);
- g_object_set(tag_object, "foreground", background_color, NULL);
- g_object_set(tag_object, "background", foreground_color, NULL);
- g_free(foreground_color);
- g_free(background_color);
+ GdkColor* foreground_color;
+ GdkColor* background_color;
+ gint f_set, b_set = 0;
+ g_object_get(tag_object, "foreground-set", &f_set, "background-set", &b_set, NULL);
+
+ if(f_set)
+ g_object_get(tag_object, "foreground-gdk", &foreground_color, NULL);
+ if(b_set)
+ g_object_get(tag_object, "background-gdk", &background_color, NULL);
+
+ if(b_set)
+ g_object_set(tag_object, "foreground-gdk", background_color, NULL);
+ else
+ g_object_set(tag_object, "foreground", "#ffffff", NULL);
+
+ if(f_set)
+ g_object_set(tag_object, "background-gdk", foreground_color, NULL);
+ else
+ g_object_set(tag_object, "background", "#000000", NULL);
+
+ g_object_set_data( tag_object, "reverse-color", GINT_TO_POINTER(val != 0) );
}
break;
}
}
+/* Internal function: queries a text tag for the value of a given style hint */
+static gint
+query_tag(GtkTextTag *tag, glui32 wintype, glui32 hint)
+{
+ gint intval;
+ GdkColor *colval;
+
+ g_return_val_if_fail(tag != NULL, 0);
+
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ switch(hint) {
+ case stylehint_Indentation:
+ g_object_get(tag, "left_margin", &intval, NULL);
+ return intval/5;
+
+ case stylehint_ParaIndentation:
+ g_object_get(tag, "indent", &intval, NULL);
+ return intval/5;
+
+ case stylehint_Justification:
+ g_object_get(tag, "justification", &intval, NULL);
+ switch(intval) {
+ case GTK_JUSTIFY_LEFT: return stylehint_just_LeftFlush;
+ case GTK_JUSTIFY_FILL: return stylehint_just_LeftRight;
+ case GTK_JUSTIFY_CENTER: return stylehint_just_Centered;
+ case GTK_JUSTIFY_RIGHT: return stylehint_just_RightFlush;
+ default:
+ WARNING("Unknown justification");
+ return stylehint_just_LeftFlush;
+ }
+
+ case stylehint_Weight:
+ g_object_get(tag, "weight", &intval, NULL);
+ switch(intval) {
+ case PANGO_WEIGHT_LIGHT: return -1;
+ case PANGO_WEIGHT_NORMAL: return 0;
+ case PANGO_WEIGHT_BOLD: return 1;
+ default: WARNING("Unknown font weight"); return 0;
+ }
+
+ case stylehint_Size:
+ g_object_get(tag, "size", &intval, NULL);
+ return (intval/2)-14;
+
+ case stylehint_Oblique:
+ g_object_get(tag, "style", &intval , NULL);
+ return intval == PANGO_STYLE_ITALIC ? 1 : 0;
+
+ case stylehint_Proportional:
+ /* Use pango_font_family_is_monospace()? */
+ {
+ gchar *font_family, *query_font_family;
+ GtkTextTag *font_tag = g_hash_table_lookup(
+ wintype == wintype_TextBuffer? glk_data->default_styles->text_buffer : glk_data->default_styles->text_grid,
+ "preformatted");
+ g_object_get(font_tag, "family", &font_family, NULL);
+ g_object_get(tag, "family", &query_font_family, NULL);
+ gint retval = strcmp(font_family, query_font_family)? 0 : 1;
+ g_free(font_family);
+ g_free(query_font_family);
+ return retval;
+ }
+
+ case stylehint_TextColor:
+ g_object_get(tag, "foreground-gdk", &colval, NULL);
+ return gdkcolor_to_glkcolor(colval);
+
+ case stylehint_BackColor:
+ g_object_get(tag, "background-gdk", &colval, NULL);
+ return gdkcolor_to_glkcolor(colval);
+
+ case stylehint_ReverseColor:
+ return GPOINTER_TO_INT( g_object_get_data(G_OBJECT(tag), "reverse_color") );
+
+ default:
+ WARNING("Unknown style hint");
+ }
+
+ return 0;
+}
+
/**
* glk_stylehint_set:
* @wintype: The window type to set a style hint on, or %wintype_AllTypes.
* @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
+ * 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
void
glk_stylehint_set(glui32 wintype, glui32 styl, glui32 hint, glsi32 val)
{
- 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);
- while(win != NULL) {
- if(wintype != wintype_TextBuffer)
- continue; /* FIXME: add support for text grid windows */
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
- if(wintype == wintype_AllTypes || glk_window_get_type(win) == wintype) {
- GtkWidget *textview = win->widget;
- GtkTextBuffer *textbuffer = gtk_text_view_get_buffer( GTK_TEXT_VIEW(textview) );
- GtkTextTagTable *table = gtk_text_buffer_get_tag_table(textbuffer);
- GtkTextTag *to_change = gtk_text_tag_table_lookup(table, tag_name);
+ GtkTextTag *to_change;
+ if(wintype == wintype_TextBuffer || wintype == wintype_AllTypes) {
+ to_change = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) );
+ apply_stylehint_to_tag(to_change, wintype_TextBuffer, hint, val);
+ }
- apply_stylehint_to_tag(to_change, hint, val);
- }
+ if(wintype == wintype_TextGrid || wintype == wintype_AllTypes) {
+ to_change = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) );
+ apply_stylehint_to_tag(to_change, wintype_TextGrid, hint, val);
}
}
+/**
+ * glk_stylehint_clear:
+ * @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.
+ *
+ * Clears a hint about the appearance of one style for a particular type of
+ * window to its default value. You can also set @wintype to %wintype_AllTypes,
+ * which clears a hint for all types of window.
+ * <note><para>
+ * There is no equivalent constant to reset a hint for all styles of a single
+ * window type.
+ * </para></note>
+ */
void
glk_stylehint_clear(glui32 wintype, glui32 styl, glui32 hint)
{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ GtkTextTag *tag;
+
+ switch(wintype) {
+ case wintype_TextBuffer:
+ tag = g_hash_table_lookup( glk_data->default_styles->text_buffer, get_tag_name(styl) );
+ glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
+ break;
+ case wintype_TextGrid:
+ tag = g_hash_table_lookup( glk_data->default_styles->text_grid, get_tag_name(styl) );
+ glk_stylehint_set( wintype, styl, hint, query_tag(tag, wintype, hint) );
+ default:
+ return;
+ }
}
+/**
+ * glk_style_distinguish:
+ * @win: The window in which the styles are to be distinguished.
+ * @styl1: The first style to be distinguished from the second style.
+ * @styl2: The second style to be distinguished from the first style.
+ *
+ * Decides whether two styles are visually distinguishable in the given window.
+ * The exact meaning of this is left for the library to determine.
+ * <note><title>Chimara</title><para>
+ * Currently, all styles of one window are assumed to be mutually
+ * distinguishable.
+ * </para></note>
+ *
+ * Returns: %TRUE (1) if the two styles are visually distinguishable. If they
+ * are not, it returns %FALSE (0).
+ */
glui32
glk_style_distinguish(winid_t win, glui32 styl1, glui32 styl2)
{
+ /* FIXME */
return styl1 != styl2;
}
+
+/**
+ * glk_style_measure:
+ * @win: The window from which to take the style.
+ * @styl: The style to perform the measurement on.
+ * @hint: The stylehint to measure.
+ * @result: Address to write the result to.
+ *
+ * Tries to test an attribute of one style in the given window @win. The library
+ * may not be able to determine the attribute; if not, this returns %FALSE (0).
+ * If it can, it returns %TRUE (1) and stores the value in the location pointed
+ * at by @result.
+ * <note><para>
+ * As usual, it is legal for @result to be %NULL, although fairly pointless.
+ * </para></note>
+ *
+ * The meaning of the value depends on the hint which was tested:
+ * <variablelist>
+ * <varlistentry>
+ * <term>%stylehint_Indentation, %stylehint_ParaIndentation</term>
+ * <listitem><para>The indentation and paragraph indentation. These are in a
+ * metric which is platform-dependent.</para>
+ * <note><para>Most likely either characters or pixels.</para></note>
+ * </listitem>
+ * </varlistentry>
+ * <varlistentry>
+ * <term>%stylehint_Justification</term>
+ * <listitem><para>One of the constants %stylehint_just_LeftFlush,
+ * %stylehint_just_LeftRight, %stylehint_just_Centered, or
+ * %stylehint_just_RightFlush.</para></listitem>
+ * </varlistentry>
+ * <varlistentry>
+ * <term>%stylehint_Size</term>
+ * <listitem><para>The font size. Again, this is in a platform-dependent
+ * metric.</para>
+ * <note><para>Pixels, points, or simply 1 if the library does not support
+ * varying font sizes.</para></note>
+ * </listitem>
+ * </varlistentry>
+ * <varlistentry>
+ * <term>%stylehint_Weight</term>
+ * <listitem><para>1 for heavy-weight fonts (boldface), 0 for normal weight,
+ * and -1 for light-weight fonts.</para></listitem>
+ * </varlistentry>
+ * <varlistentry>
+ * <term>%stylehint_Oblique</term>
+ * <listitem><para>1 for oblique fonts (italic), or 0 for normal angle.</para>
+ * </listitem>
+ * </varlistentry>
+ * <varlistentry>
+ * <term>%stylehint_Proportional</term>
+ * <listitem><para>1 for proportional-width fonts, or 0 for fixed-width.
+ * </para></listitem>
+ * </varlistentry>
+ * <varlistentry>
+ * <term>%stylehint_TextColor, %stylehint_BackColor</term>
+ * <listitem><para>These are values from 0x00000000 to 0x00FFFFFF, encoded as
+ * described in <link
+ * linkend="chimara-Suggesting-the-Appearance-of-Styles">Suggesting the
+ * Appearance of Styles</link>.</para></listitem>
+ * </varlistentry>
+ * <varlistentry>
+ * <term>%stylehint_ReverseColor</term>
+ * <listitem><para>0 for normal printing, 1 if the foreground and background
+ * colors are reversed.</para></listitem>
+ * </varlistentry>
+ * </variablelist>
+ *
+ * Returns: TRUE upon successul retrieval, otherwise FALSE.
+ */
+glui32
+glk_style_measure(winid_t win, glui32 styl, glui32 hint, glui32 *result)
+{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ GtkTextTag *tag;
+
+ switch(win->type) {
+ case wintype_TextBuffer:
+ tag = g_hash_table_lookup( glk_data->current_styles->text_buffer, get_tag_name(styl) );
+ if(result)
+ *result = query_tag(tag, win->type, hint);
+ break;
+ case wintype_TextGrid:
+ tag = g_hash_table_lookup( glk_data->current_styles->text_grid, get_tag_name(styl) );
+ if(result)
+ *result = query_tag(tag, win->type, hint);
+ default:
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+/* Internal function returning the current default font for a window type
+ * This can be used later for size calculations. Only wintype_TextGrid and wintype_TextBuffer are
+ * supported for now */
+PangoFontDescription *
+get_current_font(guint32 wintype)
+{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ GtkTextTag *normal;
+
+ switch(wintype) {
+ case wintype_TextGrid:
+ normal = g_hash_table_lookup(glk_data->current_styles->text_grid, "normal");
+ break;
+ case wintype_TextBuffer:
+ normal = g_hash_table_lookup(glk_data->current_styles->text_buffer, "normal");
+ break;
+ default:
+ return NULL;
+ }
+
+ PangoFontDescription *font;
+ g_object_get( G_OBJECT(normal), "font-desc", &font, NULL );
+
+ return font;
+}
+
+/* Internal function copying the attributes of a text tag to a pango attribute list */
+static void
+text_tag_to_attr_list(GtkTextTag *tag, PangoAttrList *list)
+{
+ gboolean set;
+ GdkColor *foreground, *background;
+ gchar *string;
+ PangoFontDescription *font_desc;
+ gboolean strikethrough;
+ PangoUnderline underline;
+
+ g_object_get(tag, "foreground-set", &set, "foreground-gdk", &foreground, NULL);
+ if(set) {
+ pango_attr_list_insert(
+ list,
+ pango_attr_foreground_new(foreground->red, foreground->green, foreground->blue)
+ );
+ }
+ g_object_get(tag, "background-set", &set, "background-gdk", &background, NULL);
+ if(set) {
+ pango_attr_list_insert(
+ list,
+ pango_attr_background_new(background->red, background->green, background->blue)
+ );
+ }
+ g_object_get(tag, "language-set", &set, "language", &string, NULL);
+ if(set) {
+ pango_attr_list_insert(
+ list,
+ pango_attr_language_new( pango_language_from_string(string) )
+ );
+ }
+
+ /* Font description updates the following properties simultaniously:
+ * family, style, weight, variant, stretch, size
+ */
+ g_object_get(tag, "font-desc", &font_desc, NULL);
+ pango_attr_list_insert(
+ list,
+ pango_attr_font_desc_new(font_desc)
+ );
+
+ g_object_get(tag, "strikethrough-set", &set, "strikethrough", &strikethrough, NULL);
+ if(set) {
+ pango_attr_list_insert(
+ list,
+ pango_attr_strikethrough_new(strikethrough)
+ );
+ }
+ g_object_get(tag, "underline-set", &set, "underline", &underline, NULL);
+ if(set) {
+ pango_attr_list_insert(
+ list,
+ pango_attr_underline_new(underline)
+ );
+ }
+}
projects / rodin / chimara.git / blobdiff