void
fz_show_string(fz_context *ctx, fz_text *text, fz_font *user_font, fz_matrix *trm, const char *s, int wmode)
{
fz_font *font;
int gid, ucs;
float adv;
while (*s)
{
s += fz_chartorune(&ucs, s);
gid = fz_encode_character_with_fallback(ctx, user_font, ucs, 0, &font);
fz_show_glyph(ctx, text, font, trm, gid, ucs, wmode);
adv = fz_advance_glyph(ctx, font, gid, wmode);
if (wmode == 0)
fz_pre_translate(trm, adv, 0);
else
fz_pre_translate(trm, 0, -adv);
}
}
static void measure_word(fz_context *ctx, fz_html_flow *node, float em)
{
fz_font *font;
const char *s;
int c, g;
float w;
em = fz_from_css_number(node->style->font_size, em, em);
node->x = 0;
node->y = 0;
node->h = fz_from_css_number_scale(node->style->line_height, em, em, em);
w = 0;
s = node->content.text;
while (*s)
{
s += fz_chartorune(&c, s);
g = fz_encode_character_with_fallback(ctx, node->style->font, c, 0, &font);
w += fz_advance_glyph(ctx, font, g) * em;
}
node->w = w;
node->em = em;
}
static void draw_flow_box(fz_context *ctx, fz_html *box, float page_top, float page_bot, fz_device *dev, const fz_matrix *ctm)
{
fz_font *font;
fz_html_flow *node;
fz_text *text;
fz_matrix trm;
const char *s;
float color[3];
int c, g;
for (node = box->flow_head; node; node = node->next)
{
if (node->type == FLOW_IMAGE)
{
if (node->y >= page_bot || node->y + node->h <= page_top)
continue;
}
else
{
if (node->y > page_bot || node->y < page_top)
continue;
}
if (node->type == FLOW_WORD)
{
fz_scale(&trm, node->em, -node->em);
color[0] = node->style->color.r / 255.0f;
color[1] = node->style->color.g / 255.0f;
color[2] = node->style->color.b / 255.0f;
/* TODO: reuse text object if color is unchanged */
text = fz_new_text(ctx);
trm.e = node->x;
trm.f = node->y;
s = node->content.text;
if (node->char_r2l)
{
float w = 0;
const char *t = s;
while (*t)
{
t += fz_chartorune(&c, t);
if (node->mirror)
c = ucdn_mirror(c);
g = fz_encode_character_with_fallback(ctx, node->style->font, c, 0, &font);
w += fz_advance_glyph(ctx, font, g) * node->em;
}
trm.e += w;
while (*s)
{
s += fz_chartorune(&c, s);
if (node->mirror)
c = ucdn_mirror(c);
g = fz_encode_character_with_fallback(ctx, node->style->font, c, 0, &font);
trm.e -= fz_advance_glyph(ctx, font, g) * node->em;
if (node->style->visibility == V_VISIBLE)
fz_add_text(ctx, text, font, 0, &trm, g, c);
}
trm.e += w;
}
else
{
while (*s)
{
s += fz_chartorune(&c, s);
g = fz_encode_character_with_fallback(ctx, node->style->font, c, 0, &font);
if (node->style->visibility == V_VISIBLE)
fz_add_text(ctx, text, font, 0, &trm, g, c);
trm.e += fz_advance_glyph(ctx, font, g) * node->em;
}
}
if (text)
{
fz_fill_text(ctx, dev, text, ctm, fz_device_rgb(ctx), color, 1);
fz_drop_text(ctx, text);
}
}
else if (node->type == FLOW_IMAGE)
{
if (node->style->visibility == V_VISIBLE)
{
fz_matrix local_ctm = *ctm;
fz_pre_translate(&local_ctm, node->x, node->y);
fz_pre_scale(&local_ctm, node->w, node->h);
fz_fill_image(ctx, dev, node->content.image, &local_ctm, 1);
}
}
}
}
static void draw_list_mark(fz_context *ctx, fz_html *box, float page_top, float page_bot, fz_device *dev, const fz_matrix *ctm, int n)
{
fz_font *font;
fz_text *text;
fz_matrix trm;
fz_html_flow *line;
float y, w;
float color[3];
const char *s;
char buf[40];
int c, g;
fz_scale(&trm, box->em, -box->em);
text = fz_new_text(ctx);
line = find_list_mark_anchor(ctx, box);
if (line)
{
y = line->y;
}
else
{
float h = fz_from_css_number_scale(box->style.line_height, box->em, box->em, box->em);
float a = box->em * 0.8;
float d = box->em * 0.2;
if (a + d > h)
h = a + d;
y = box->y + a + (h - a - d) / 2;
}
if (y > page_bot || y < page_top)
return;
format_list_number(ctx, box->style.list_style_type, n, buf, sizeof buf);
s = buf;
w = 0;
while (*s)
{
s += fz_chartorune(&c, s);
g = fz_encode_character_with_fallback(ctx, box->style.font, c, UCDN_SCRIPT_LATIN, &font);
w += fz_advance_glyph(ctx, font, g) * box->em;
}
s = buf;
trm.e = box->x - w;
trm.f = y;
while (*s)
{
s += fz_chartorune(&c, s);
g = fz_encode_character_with_fallback(ctx, box->style.font, c, UCDN_SCRIPT_LATIN, &font);
fz_add_text(ctx, text, font, 0, &trm, g, c);
trm.e += fz_advance_glyph(ctx, font, g) * box->em;
}
color[0] = box->style.color.r / 255.0f;
color[1] = box->style.color.g / 255.0f;
color[2] = box->style.color.b / 255.0f;
fz_fill_text(ctx, dev, text, ctm, fz_device_rgb(ctx), color, 1);
fz_drop_text(ctx, text);
}
float ui_draw_character(fz_context *ctx, int ucs, float x, float y)
{
fz_font *font;
int gid = fz_encode_character_with_fallback(ctx, g_font, ucs, 0, &font);
return ui_draw_glyph(font, gid, x, y);
}
float ui_measure_character(fz_context *ctx, int ucs)
{
fz_font *font;
int gid = fz_encode_character_with_fallback(ctx, g_font, ucs, 0, &font);
return fz_advance_glyph(ctx, font, gid, 0) * g_font_size;
}
