OOPS! Forgot to cvs add this file -mig

src/style.c

+/*
+ * Style.c: Style resource management
+ *
+ * Author:
+ *  Miguel de Icaza (miguel@gnu.org)
+ *  (C) 1998 Miguel de Icaza
+ */
+#include <config.h>
+#include <gnome.h>
+#include "style.h"
+
+static GHashTable *style_format_hash;
+static GHashTable *style_font_hash;
+static GHashTable *style_border_hash;
+
+StyleFormat *
+style_format_new (char *name)
+{
+	StyleFormat *format;
+
+	g_return_val_if_fail (name != NULL, NULL);
+	
+	format = (StyleFormat *) g_hash_table_lookup (style_format_hash, name);
+	
+	if (!format){
+		format = g_new0 (StyleFormat, 1);
+		format->format = g_strdup (name);
+		g_hash_table_insert (style_format_hash, name, format);
+	}
+	format->ref_count++;
+
+	return format;
+}
+
+void
+style_format_ref (StyleFormat *sf)
+{
+	g_return_if_fail (sf != NULL);
+
+	sf->ref_count++;
+}
+
+void
+style_format_unref (StyleFormat *sf)
+{
+	g_return_if_fail (sf->ref_count > 0);
+
+	sf->ref_count--;
+	if (sf->ref_count != 0)
+		return;
+	
+	g_hash_table_remove (style_format_hash, sf->format);
+	g_free (sf->format);
+	g_free (sf);
+}
+
+StyleFont *
+style_font_new (char *font_name, int units)
+{
+	StyleFont *font;
+	StyleFont key;
+
+	g_return_val_if_fail (font_name != NULL, NULL);
+	g_return_val_if_fail (units != 0, NULL);
+	
+	key.font_name = font_name;
+	key.units    = units;
+	
+	font = (StyleFont *) g_hash_table_lookup (style_font_hash, &key);
+	if (!font){
+		font = g_new0 (StyleFont, 1);
+		font->font_name = g_strdup (font_name);
+		font->units    = units;
+		g_hash_table_insert (style_font_hash, font, font);
+	}
+	font->ref_count++;
+
+	return font;
+}
+
+void
+style_font_ref (StyleFont *sf)
+{
+	g_return_if_fail (sf != NULL);
+
+	sf->ref_count++;
+}
+
+void
+style_font_unref (StyleFont *sf)
+{
+	g_return_if_fail (sf != NULL);
+	g_return_if_fail (sf->ref_count > 0);
+
+	sf->ref_count--;
+	if (sf->ref_count != 0)
+		return;
+
+	g_hash_table_remove (style_font_hash, sf);
+	g_free (sf->font_name);
+	g_free (sf);
+}
+
+StyleBorder *
+style_border_new (StyleBorderType left, StyleBorderType right,
+		  StyleBorderType top,  StyleBorderType bottom,
+		  GdkColor *left_color,  GdkColor *right_color,
+		  GdkColor *top_color,   GdkColor *bottom_color)
+{
+	StyleBorder key, *border;
+
+	key.left    	 = left;
+	key.right   	 = right;
+	key.top     	 = top;
+	key.bottom  	 = bottom;
+	if (left_color)
+		key.left_color   = *left_color;
+	if (right_color)
+		key.right_color  = *right_color;
+	if (top_color)
+		key.top_color    = *top_color;
+	if (bottom_color)
+		key.bottom_color = *bottom_color;
+
+	border = (StyleBorder *) g_hash_table_lookup (style_border_hash, &key);
+	if (!border){
+		border = g_new0 (StyleBorder, 1);
+		*border = key;
+		g_hash_table_insert (style_border_hash, border, border);
+	}
+	border->ref_count++;
+
+	return border;
+}
+
+void
+style_border_ref (StyleBorder *sb)
+{
+	g_return_if_fail (sb != NULL);
+
+	sb->ref_count++;
+}
+
+void
+style_border_unref (StyleBorder *sb)
+{
+	g_return_if_fail (sb != NULL);
+	g_return_if_fail (sb->ref_count > 0);
+
+	sb->ref_count--;
+	if (sb->ref_count != 0)
+		return;
+
+	g_hash_table_remove (style_border_hash, sb);
+	g_free (sb);
+}
+
+StyleBorder *
+style_border_new_plain (void)
+{
+	return style_border_new (BORDER_NONE, BORDER_NONE,
+				 BORDER_NONE, BORDER_NONE,
+				 NULL, NULL, NULL, NULL);
+}
+
+Style *
+style_new (void)
+{
+	Style *style;
+
+	style = g_new0 (Style, 1);
+
+	style->format  = style_format_new ("#");
+	style->font    = style_font_new ("Times", 14);
+	style->border  = style_border_new_plain ();
+
+	style->halign = HALIGN_LEFT;
+	style->valign = VALIGN_CENTER;
+	style->orientation = ORIENT_HORIZ;
+	
+	return style;
+}
+
+Style *
+style_duplicate (Style *original)
+{
+	Style *style;
+
+	style = g_new0 (Style, 1);
+
+	*style = *original;
+	
+	style_format_ref (original->format);
+	style_font_ref   (original->font);
+	style_border_ref (original->border);
+
+	return style;
+}
+
+/*
+ * The routines used to hash and compare the different styles
+ */
+static gint
+font_equal (gconstpointer v, gconstpointer v2)
+{
+	StyleFont *k1 = (StyleFont *) v;
+	StyleFont *k2 = (StyleFont *) v2;
+
+	if (k1->units != k2->units)
+		return 0;
+	
+	return !strcmp (k1->font_name, k2->font_name);
+}
+
+static guint
+font_hash (gconstpointer v)
+{
+	StyleFont *k = (StyleFont *) v;
+
+	return k->units + g_str_hash (k->font_name);
+}
+
+static gint
+border_equal (gconstpointer v, gconstpointer v2)
+{
+	StyleBorder *k1 = (StyleBorder *) v;
+	StyleBorder *k2 = (StyleBorder *) v2;
+
+	if (k1->left != k2->left)
+		return 0;
+	if (k1->right != k2->right)
+		return 0;
+	if (k1->top != k2->top)
+		return 0;
+	if (k1->bottom != k2->bottom)
+		return 0;
+	if (k1->left != BORDER_NONE)
+		if (!gdk_color_equal (&k1->left_color, &k2->left_color))
+			return 0;
+	if (k1->right != BORDER_NONE)
+		if (!gdk_color_equal (&k1->right_color, &k2->right_color))
+			return 0;
+	if (k1->top != BORDER_NONE)
+		if (gdk_color_equal (&k1->top_color, &k2->top_color))
+			return 0;
+	if (k1->bottom != BORDER_NONE)
+		if (gdk_color_equal (&k1->bottom_color, &k2->bottom_color))
+			return 0;
+	return 1;
+}
+
+static guint
+border_hash (gconstpointer v)
+{
+	StyleBorder *k = (StyleBorder *) v;
+
+	return (k->left << 12) | (k->right << 8) | (k->top << 4) | (k->bottom);
+}
+
+void
+style_init (void)
+{
+	style_format_hash = g_hash_table_new (g_str_hash, g_str_equal);
+	style_font_hash   = g_hash_table_new (font_hash, font_equal);
+	style_border_hash = g_hash_table_new (border_hash, border_equal);
+}
+