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authorJames Bursa <james@netsurf-browser.org>2004-06-22 18:48:33 (GMT)
committer James Bursa <james@netsurf-browser.org>2004-06-22 18:48:33 (GMT)
commite4d780c476bfab347c55a75a65209ec9df8148a8 (patch)
treea9ed2d75b474d01d208e529ab671e8894a45669d /gtk/font_pango.c
parent2a23749fc678cdad43c2e3b5149010904d6c2528 (diff)
downloadnetsurf-e4d780c476bfab347c55a75a65209ec9df8148a8.tar.gz
netsurf-e4d780c476bfab347c55a75a65209ec9df8148a8.tar.bz2
[project @ 2004-06-22 18:48:33 by bursa]
Experimental gtk interface. svn path=/import/netsurf/; revision=993
Diffstat (limited to 'gtk/font_pango.c')
-rw-r--r--gtk/font_pango.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/gtk/font_pango.c b/gtk/font_pango.c
new file mode 100644
index 0000000..17ef149
--- a/dev/null
+++ b/gtk/font_pango.c
@@ -0,0 +1,166 @@
+/*
+ * This file is part of NetSurf, http://netsurf.sourceforge.net/
+ * Licensed under the GNU General Public License,
+ * http://www.opensource.org/licenses/gpl-license
+ * Copyright 2004 James Bursa <bursa@users.sourceforge.net>
+ */
+
+#include <assert.h>
+#include <stdio.h>
+#include <gtk/gtk.h>
+#include "netsurf/css/css.h"
+#include "netsurf/render/font.h"
+#include "netsurf/utils/utils.h"
+#include "netsurf/utils/log.h"
+
+
+struct font_set {
+ int x;
+};
+
+
+struct font_set *font_new_set()
+{
+ return 0;
+}
+
+
+struct font_data *font_open(struct font_set *set, struct css_style *style)
+{
+ struct font_data *data;
+ unsigned int size = PANGO_SCALE * 11;
+ PangoFontDescription *fontdesc;
+ PangoWeight weight = PANGO_WEIGHT_NORMAL;
+ PangoStyle styl = PANGO_STYLE_NORMAL;
+
+ if (style->font_size.size == CSS_FONT_SIZE_LENGTH)
+ size = style->font_size.value.length.value * PANGO_SCALE;
+
+ switch (style->font_weight) {
+ case CSS_FONT_WEIGHT_NORMAL:
+ weight = PANGO_WEIGHT_NORMAL; break;
+ case CSS_FONT_WEIGHT_BOLD:
+ weight = PANGO_WEIGHT_BOLD; break;
+ case CSS_FONT_WEIGHT_100: weight = 100; break;
+ case CSS_FONT_WEIGHT_200: weight = 200; break;
+ case CSS_FONT_WEIGHT_300: weight = 300; break;
+ case CSS_FONT_WEIGHT_400: weight = 400; break;
+ case CSS_FONT_WEIGHT_500: weight = 500; break;
+ case CSS_FONT_WEIGHT_600: weight = 600; break;
+ case CSS_FONT_WEIGHT_700: weight = 700; break;
+ case CSS_FONT_WEIGHT_800: weight = 800; break;
+ case CSS_FONT_WEIGHT_900: weight = 900; break;
+ default: break;
+ }
+
+ switch (style->font_style) {
+ case CSS_FONT_STYLE_ITALIC: styl = PANGO_STYLE_ITALIC; break;
+ case CSS_FONT_STYLE_OBLIQUE: styl = PANGO_STYLE_OBLIQUE; break;
+ default: break;
+ }
+
+ fontdesc = pango_font_description_new();
+ pango_font_description_set_size(fontdesc, size);
+ pango_font_description_set_family_static(fontdesc, "Sans");
+ pango_font_description_set_weight(fontdesc, weight);
+ pango_font_description_set_style(fontdesc, styl);
+
+ data = malloc(sizeof *data);
+ assert(data);
+
+ data->id = fontdesc;
+ data->size = size;
+ data->space_width = font_width(data, " ", 1);
+
+ return data;
+}
+
+
+void font_free_set(struct font_set *set)
+{
+}
+
+
+unsigned long font_width(struct font_data *font, const char *text,
+ unsigned int length)
+{
+ int width;
+ PangoContext *context;
+ PangoLayout *layout;
+
+ assert(font && text);
+
+ if (length == 0)
+ return 0;
+
+ context = gdk_pango_context_get();
+ layout = pango_layout_new(context);
+ pango_layout_set_font_description(layout, font->id);
+ pango_layout_set_text(layout, text, length);
+
+ pango_layout_get_pixel_size(layout, &width, 0);
+
+ g_object_unref(layout);
+ g_object_unref(context);
+
+ return width;
+}
+
+
+void font_position_in_string(const char *text, struct font_data *font,
+ unsigned int length, unsigned long x, int *char_offset,
+ int *pixel_offset)
+{
+ int index;
+ PangoContext *context;
+ PangoLayout *layout;
+ PangoRectangle pos;
+
+ assert(font && text);
+
+ context = gdk_pango_context_get();
+ layout = pango_layout_new(context);
+ pango_layout_set_font_description(layout, font->id);
+ pango_layout_set_text(layout, text, length);
+
+ pango_layout_xy_to_index(layout, x * PANGO_SCALE, 0, &index, 0);
+ pango_layout_index_to_pos(layout, index, &pos);
+
+ g_object_unref(layout);
+ g_object_unref(context);
+
+ *char_offset = index;
+ *pixel_offset = PANGO_PIXELS(pos.x);
+}
+
+
+char *font_split(struct font_data *font, const char *text, unsigned int length,
+ unsigned int width, unsigned int *used_width)
+{
+ int index = length;
+ int x_pos;
+ PangoContext *context;
+ PangoLayout *layout;
+ PangoLayoutLine *line;
+
+ assert(font && text);
+
+ context = gdk_pango_context_get();
+ layout = pango_layout_new(context);
+ pango_layout_set_font_description(layout, font->id);
+ pango_layout_set_text(layout, text, length);
+
+ pango_layout_set_width(layout, width * PANGO_SCALE);
+ pango_layout_set_wrap(layout, PANGO_WRAP_WORD);
+ line = pango_layout_get_line(layout, 1);
+ if (line)
+ index = line->start_index - 1;
+ pango_layout_line_index_to_x(pango_layout_get_line(layout, 0),
+ index, 0, &x_pos);
+
+ g_object_unref(layout);
+ g_object_unref(context);
+
+ *used_width = PANGO_PIXELS(x_pos);
+ return text + index;
+}