diff options
Diffstat (limited to 'gtk/font_pango.c')
| -rw-r--r-- | gtk/font_pango.c | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/gtk/font_pango.c b/gtk/font_pango.c new file mode 100644 index 000000000..17ef149c3 --- /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; +} |