static void
set_text_expansion (AboutRenderer *r, double er)
{
const char *text = pango_layout_get_text (r->layout);
GString *str = g_string_new (NULL);
char *ntext;
const char *p;
r->expansion.rate = er;
r->expansion.count = 0;
/* Normalize to make sure diacriticals are combined. */
ntext = g_utf8_normalize (text, -1, G_NORMALIZE_DEFAULT_COMPOSE);
/* Insert inter-letter spaces we can stretch. */
for (p = ntext; *p; p = g_utf8_next_char (p)) {
gunichar uc = g_utf8_get_char (p);
if (uc == UNICODE_ZERO_WIDTH_SPACE_C)
continue;
if (str->len) {
g_string_append_unichar (str, UNICODE_ZERO_WIDTH_SPACE_C);
r->expansion.count++;
}
g_string_append_unichar (str, uc);
}
g_free (ntext);
pango_layout_set_text (r->layout, str->str, -1);
g_string_free (str, TRUE);
}
static gunichar
gail_scale_get_character_at_offset (AtkText *text,
gint offset)
{
GtkWidget *widget;
GtkScale *scale;
PangoLayout *layout;
const gchar *string;
gchar *index;
gunichar c;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return '\0';
scale = GTK_SCALE (widget);
layout = gtk_scale_get_layout (scale);
if (!layout)
return '\0';
string = pango_layout_get_text (layout);
if (offset >= g_utf8_strlen (string, -1))
c = '\0';
else
{
index = g_utf8_offset_to_pointer (string, offset);
c = g_utf8_get_char (index);
}
return c;
}
std::string ttext::get_token(const gui2::tpoint & position, const char * delim) const
{
recalculate();
// Get the index of the character.
int index, trailing;
if (!pango_layout_xy_to_index(layout_, position.x * PANGO_SCALE,
position.y * PANGO_SCALE, &index, &trailing)) {
return "";
}
std::string txt = pango_layout_get_text(layout_);
std::string d(delim);
if (index < 0 || (static_cast<size_t>(index) >= txt.size()) || d.find(txt.at(index)) != std::string::npos) {
return ""; // if the index is out of bounds, or the index character is a delimiter, return nothing
}
size_t l = index;
while (l > 0 && (d.find(txt.at(l-1)) == std::string::npos)) {
--l;
}
size_t r = index + 1;
while (r < txt.size() && (d.find(txt.at(r)) == std::string::npos)) {
++r;
}
return txt.substr(l,r-l);
}
static uint32_t
text_entry_try_invoke_preedit_action(struct text_entry *entry,
int32_t x, int32_t y,
uint32_t button,
enum wl_pointer_button_state state)
{
int index, trailing;
uint32_t cursor;
const char *text;
if (!entry->preedit.text)
return 0;
pango_layout_xy_to_index(entry->layout,
x * PANGO_SCALE, y * PANGO_SCALE,
&index, &trailing);
text = pango_layout_get_text(entry->layout);
cursor = g_utf8_offset_to_pointer(text + index, trailing) - text;
if (cursor < entry->cursor ||
cursor > entry->cursor + strlen(entry->preedit.text)) {
return 0;
}
if (state == WL_POINTER_BUTTON_STATE_RELEASED)
wl_text_input_invoke_action(entry->text_input,
button,
cursor - entry->cursor);
return 1;
}
static void
gail_scale_notify (GObject *obj,
GParamSpec *pspec)
{
GailScale *scale = GAIL_SCALE (obj);
if (strcmp (pspec->name, "accessible-value") == 0)
{
GtkWidget *widget;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget)
{
GtkScale *gtk_scale;
PangoLayout *layout;
const gchar *txt;
gtk_scale = GTK_SCALE (widget);
layout = gtk_scale_get_layout (gtk_scale);
if (layout)
{
txt = pango_layout_get_text (layout);
if (txt)
{
g_signal_emit_by_name (obj, "text_changed::delete", 0,
gtk_text_buffer_get_char_count (scale->textutil->buffer));
gail_text_util_text_setup (scale->textutil, txt);
g_signal_emit_by_name (obj, "text_changed::insert", 0,
g_utf8_strlen (txt, -1));
}
}
}
}
G_OBJECT_CLASS (gail_scale_parent_class)->notify (obj, pspec);
}
static void
gail_scale_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords)
{
GtkWidget *widget;
GtkScale *scale;
PangoRectangle char_rect;
PangoLayout *layout;
gint index, x_layout, y_layout;
const gchar *scale_text;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return;
scale = GTK_SCALE (widget);
layout = gtk_scale_get_layout (scale);
if (!layout)
return;
scale_text = pango_layout_get_text (layout);
if (!scale_text)
return;
index = g_utf8_offset_to_pointer (scale_text, offset) - scale_text;
gtk_scale_get_layout_offsets (scale, &x_layout, &y_layout);
pango_layout_index_to_pos (layout, index, &char_rect);
gail_misc_get_extents_from_pango_rectangle (widget, &char_rect,
x_layout, y_layout, x, y, width, height, coords);
}
static void
gnm_notebook_button_ensure_layout (GnmNotebookButton *nbb)
{
const char *text = gtk_label_get_text (GTK_LABEL (nbb));
if (nbb->layout) {
if (strcmp (text, pango_layout_get_text (nbb->layout)) == 0)
return;
pango_layout_set_text (nbb->layout, text, -1);
pango_layout_set_text (nbb->layout_active, text, -1);
} else {
PangoAttrList *attrs, *attrs_active;
PangoAttribute *attr;
PangoFontDescription *desc;
GtkWidget *widget = GTK_WIDGET (nbb);
GtkStyleContext *context =
gtk_widget_get_style_context (widget);
nbb->layout = gtk_widget_create_pango_layout (widget, text);
nbb->layout_active = gtk_widget_create_pango_layout (widget, text);
/* Common */
attrs = pango_attr_list_new ();
if (nbb->bg) {
attr = go_color_to_pango
(go_color_from_gdk_rgba (nbb->bg, NULL),
FALSE);
attr->start_index = 0;
attr->end_index = -1;
pango_attr_list_insert (attrs, attr);
}
attrs_active = pango_attr_list_copy (attrs);
/* Normal */
gtk_style_context_get (context, GTK_STATE_FLAG_NORMAL,
"font", &desc, NULL);
attr = pango_attr_font_desc_new (desc);
attr->start_index = 0;
attr->end_index = -1;
pango_attr_list_insert (attrs, attr);
pango_font_description_free (desc);
pango_layout_set_attributes (nbb->layout, attrs);
pango_attr_list_unref (attrs);
/* Active */
gtk_style_context_get (context, GTK_STATE_FLAG_ACTIVE,
"font", &desc, NULL);
attr = pango_attr_font_desc_new (desc);
attr->start_index = 0;
attr->end_index = -1;
pango_attr_list_insert (attrs_active, attr);
pango_font_description_free (desc);
pango_layout_set_attributes (nbb->layout_active, attrs_active);
pango_attr_list_unref (attrs_active);
}
pango_layout_get_extents (nbb->layout, NULL, &nbb->logical);
pango_layout_get_extents (nbb->layout_active, NULL, &nbb->logical_active);
}
static void
test_file (const gchar *filename, GString *string)
{
gchar *contents;
gchar *markup;
gsize length;
GError *error = NULL;
PangoLayout *layout;
gchar *p;
gint width = 0;
gint ellipsize_at = 0;
PangoEllipsizeMode ellipsize = PANGO_ELLIPSIZE_NONE;
PangoWrapMode wrap = PANGO_WRAP_WORD;
PangoFontDescription *desc;
if (!g_file_get_contents (filename, &contents, &length, &error))
{
fprintf (stderr, "%s\n", error->message);
g_error_free (error);
return;
}
p = strchr (contents, '\n');
g_assert (p);
markup = p + 1;
*p = '\0';
parse_params (contents, &width, &ellipsize_at, &ellipsize, &wrap);
layout = pango_layout_new (context);
desc = pango_font_description_from_string ("Cantarell 11");
pango_layout_set_font_description (layout, desc);
pango_font_description_free (desc);
pango_layout_set_markup (layout, markup, length);
g_free (contents);
if (width != 0)
pango_layout_set_width (layout, width * PANGO_SCALE);
pango_layout_set_ellipsize (layout, ellipsize);
pango_layout_set_wrap (layout, wrap);
g_string_append (string, pango_layout_get_text (layout));
g_string_append (string, "\n---\n\n");
g_string_append_printf (string, "wrapped: %d\n", pango_layout_is_wrapped (layout));
g_string_append_printf (string, "ellipsized: %d\n", pango_layout_is_ellipsized (layout));
g_string_append_printf (string, "lines: %d\n", pango_layout_get_line_count (layout));
if (width != 0)
g_string_append_printf (string, "width: %d\n", pango_layout_get_width (layout));
g_string_append (string, "\n---\n\n");
dump_attrs (pango_layout_get_attributes (layout), string);
g_string_append (string, "\n---\n\n");
dump_lines (layout, string);
g_string_append (string, "\n---\n\n");
dump_runs (layout, string);
g_object_unref (layout);
}
static void _mt_draw_string(MT_WINDOW *win, MT_STRING *str, int x_offset, int y_offset, MT_COLOR *color)
{
MT_GTK_STRING *s = str;
PangoLayout *layout = s->layout;
int state_type = s->state_type;
if (!color && s->color) color = s->color;
if (color && !pango_layout_get_text(layout)) color = NULL;
if (color) {
PangoAttrList *attrlist;
PangoAttribute *attr;
layout = pango_layout_copy(layout);
attrlist = pango_layout_get_attributes(layout);
if (attrlist) {
pango_attr_list_ref(attrlist);
}
else {
attrlist = pango_attr_list_new();
}
if (color) {
attr = pango_attr_foreground_new(color->r << 8, color->g << 8, color->b << 8);
attr->start_index = 0;
attr->end_index = strlen(pango_layout_get_text(layout));
pango_attr_list_insert_before(attrlist, attr);
}
pango_layout_set_attributes(layout, attrlist);
pango_attr_list_unref(attrlist);
state_type = GTK_STATE_NORMAL;
}
s->parent_class->draw_layout(s->style, (GdkWindow *)win, state_type, s->use_text,
s->area, s->widget, s->detail, s->x + x_offset, s->y + y_offset, layout);
if (color) {
g_object_unref(layout);
}
}
static gint
gtk_icon_view_item_accessible_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coord_type)
{
GtkIconViewItemAccessible *item;
gint offset = 0;
#if 0
GtkIconView *icon_view;
const gchar *item_text;
gint index;
gint l_x, l_y;
#endif
item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
if (!GTK_IS_ICON_VIEW (item->widget))
return -1;
if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
return -1;
#if 0
icon_view = GTK_ICON_VIEW (item->widget);
/* FIXME we probably have to use GailTextCell to salvage this */
gtk_icon_view_update_item_text (icon_view, item->item);
atk_component_get_position (ATK_COMPONENT (text), &l_x, &l_y, coord_type);
x -= l_x + item->item->layout_x - item->item->x;
x += ((item->item->width - item->item->layout_width) / 2) + (MAX (item->item->pixbuf_width, icon_view->priv->item_width) - item->item->width) / 2,
y -= l_y + item->item->layout_y - item->item->y;
item_text = pango_layout_get_text (icon_view->priv->layout);
if (!pango_layout_xy_to_index (icon_view->priv->layout,
x * PANGO_SCALE,
y * PANGO_SCALE,
&index, NULL))
{
if (x < 0 || y < 0)
index = 0;
else
index = -1;
}
if (index == -1)
offset = g_utf8_strlen (item_text, -1);
else
offset = g_utf8_pointer_to_offset (item_text, item_text + index);
#endif
return offset;
}
static const gchar *
gtk_scale_accessible_get_description (AtkObject *object)
{
GtkWidget *widget;
PangoLayout *layout;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (object));
if (widget == NULL)
return NULL;
layout = gtk_scale_get_layout (GTK_SCALE (widget));
if (layout)
return pango_layout_get_text (layout);
return ATK_OBJECT_CLASS (_gtk_scale_accessible_parent_class)->get_description (object);
}
static PangoAttrList *
create_shape_attr_list_for_layout (PangoLayout *layout,
IconShapeData *data)
{
PangoAttrList *attrs;
PangoFontMetrics *metrics;
gint ascent, descent;
PangoRectangle ink_rect, logical_rect;
const gchar *p;
const gchar *text;
gint placeholder_len;
/* Get font metrics and prepare fancy shape size */
metrics = pango_context_get_metrics (pango_layout_get_context (layout),
pango_layout_get_font_description (layout),
NULL);
ascent = pango_font_metrics_get_ascent (metrics);
descent = pango_font_metrics_get_descent (metrics);
pango_font_metrics_unref (metrics);
logical_rect.x = 0;
logical_rect.y = - ascent;
logical_rect.width = ascent + descent;
logical_rect.height = ascent + descent;
ink_rect = logical_rect;
attrs = pango_attr_list_new ();
text = pango_layout_get_text (layout);
placeholder_len = strlen (data->placeholder_str);
for (p = text; (p = strstr (p, data->placeholder_str)); p += placeholder_len) {
PangoAttribute *attr;
attr = pango_attr_shape_new_with_data (&ink_rect,
&logical_rect,
GUINT_TO_POINTER (g_utf8_get_char (p)),
NULL, NULL);
attr->start_index = p - text;
attr->end_index = attr->start_index + placeholder_len;
pango_attr_list_insert (attrs, attr);
}
return attrs;
}
static void
make_layout(GtkWidget *widget,
PangoLayout **layout_p,
const char *value)
{
if (value == NULL)
value = "";
if (*layout_p == NULL) {
*layout_p = gtk_widget_create_pango_layout(widget, value);
} else {
const char *old = pango_layout_get_text(*layout_p);
if (old && strcmp(old, value) == 0)
/* nothing */;
else
pango_layout_set_text(*layout_p, value, -1);
}
}
static AtkAttributeSet*
gail_scale_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkScale *scale;
AtkAttributeSet *at_set = NULL;
GtkTextDirection dir;
PangoLayout *layout;
const gchar *scale_text;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return NULL;
scale = GTK_SCALE (widget);
layout = gtk_scale_get_layout (scale);
if (!layout)
return at_set;
scale_text = pango_layout_get_text (layout);
if (!scale_text)
return at_set;
dir = gtk_widget_get_direction (widget);
if (dir == GTK_TEXT_DIR_RTL)
{
at_set = gail_misc_add_attribute (at_set,
ATK_TEXT_ATTR_DIRECTION,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION, dir)));
}
at_set = gail_misc_layout_get_run_attributes (at_set,
layout,
(gchar *)scale_text,
offset,
start_offset,
end_offset);
return at_set;
}
static void
dump_lines (PangoLayout *layout, GString *string)
{
PangoLayoutIter *iter;
const gchar *text;
gint index, index2;
gboolean has_more;
gchar *char_str;
gint i;
PangoLayoutLine *line;
text = pango_layout_get_text (layout);
iter = pango_layout_get_iter (layout);
has_more = TRUE;
index = pango_layout_iter_get_index (iter);
i = 0;
while (has_more)
{
line = pango_layout_iter_get_line (iter);
has_more = pango_layout_iter_next_line (iter);
i++;
if (has_more)
{
index2 = pango_layout_iter_get_index (iter);
char_str = g_strndup (text + index, index2 - index);
}
else
{
char_str = g_strdup (text + index);
}
g_string_append_printf (string, "i=%d, index=%d, paragraph-start=%d, dir=%s '%s'\n",
i, index, line->is_paragraph_start, direction_name (line->resolved_dir),
char_str);
g_free (char_str);
index = index2;
}
pango_layout_iter_free (iter);
}
static void
gtk_icon_view_item_accessible_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coord_type)
{
GtkIconViewItemAccessible *item;
#if 0
GtkIconView *icon_view;
PangoRectangle char_rect;
const gchar *item_text;
gint index;
#endif
item = GTK_ICON_VIEW_ITEM_ACCESSIBLE (text);
if (!GTK_IS_ICON_VIEW (item->widget))
return;
if (atk_state_set_contains_state (item->state_set, ATK_STATE_DEFUNCT))
return;
#if 0
icon_view = GTK_ICON_VIEW (item->widget);
/* FIXME we probably have to use GailTextCell to salvage this */
gtk_icon_view_update_item_text (icon_view, item->item);
item_text = pango_layout_get_text (icon_view->priv->layout);
index = g_utf8_offset_to_pointer (item_text, offset) - item_text;
pango_layout_index_to_pos (icon_view->priv->layout, index, &char_rect);
atk_component_get_position (ATK_COMPONENT (text), x, y, coord_type);
*x += item->item->layout_x - item->item->x + char_rect.x / PANGO_SCALE;
/* Look at gtk_icon_view_paint_item() to see where the text is. */
*x -= ((item->item->width - item->item->layout_width) / 2) + (MAX (item->item->pixbuf_width, icon_view->priv->item_width) - item->item->width) / 2,
*y += item->item->layout_y - item->item->y + char_rect.y / PANGO_SCALE;
*width = char_rect.width / PANGO_SCALE;
*height = char_rect.height / PANGO_SCALE;
#endif
}
static gint gtk_anim_label_button_press(GtkWidget * widget, GdkEventButton * event
)
{
GtkAnimLabel *anim_label;
g_return_val_if_fail(widget != NULL, FALSE);
g_return_val_if_fail(GTK_IS_ANIM_LABEL(widget), FALSE);
g_return_val_if_fail(event != NULL, FALSE);
anim_label = GTK_ANIM_LABEL(widget);
if (anim_label->txt)
{
char *plain = (char *) pango_layout_get_text(anim_label->layout);
gtk_clipboard_set_text(gtk_widget_get_clipboard(GTK_WIDGET(anim_label), GDK_SELECTION_CLIPBOARD), plain, -1);
}
return FALSE;
}
static void
text_entry_set_anchor_position(struct text_entry *entry,
int32_t x, int32_t y)
{
int index, trailing;
const char *text;
pango_layout_xy_to_index(entry->layout,
x * PANGO_SCALE, y * PANGO_SCALE,
&index, &trailing);
text = pango_layout_get_text(entry->layout);
entry->anchor = g_utf8_offset_to_pointer(text + index, trailing) - text;
text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget);
text_entry_update(entry);
}
static void
ellipsize_layout (PangoLayout *layout, gint width)
{
PangoLayoutLine *line;
PangoLayout *ell;
gint h, w, ell_w, x;
GString *text;
if (width <= 0) {
pango_layout_set_text (layout, "", -1);
return;
}
pango_layout_get_pixel_size (layout, &w, &h);
if (w <= width) return;
/* calculate ellipsis width */
ell = pango_layout_copy (layout);
pango_layout_set_text (ell, ELLIPSIS, -1);
pango_layout_get_pixel_size (ell, &ell_w, NULL);
g_object_unref (ell);
if (width < ell_w) {
/* not even ellipsis fits, so hide the text */
pango_layout_set_text (layout, "", -1);
return;
}
/* shrink total available width by the width of the ellipsis */
width -= ell_w;
line = pango_layout_get_line (layout, 0);
text = g_string_new (pango_layout_get_text (layout));
if (pango_layout_line_x_to_index (line, width * PANGO_SCALE, &x, NULL)) {
g_string_set_size (text, x);
g_string_append (text, ELLIPSIS);
pango_layout_set_text (layout, text->str, -1);
}
g_string_free (text, TRUE);
}
static gint
gail_scale_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords)
{
GtkWidget *widget;
GtkScale *scale;
PangoLayout *layout;
gint index, x_layout, y_layout;
const gchar *scale_text;
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (text));
if (widget == NULL)
/* State is defunct */
return -1;
scale = GTK_SCALE (widget);
layout = gtk_scale_get_layout (scale);
if (!layout)
return -1;
scale_text = pango_layout_get_text (layout);
if (!scale_text)
return -1;
gtk_scale_get_layout_offsets (scale, &x_layout, &y_layout);
index = gail_misc_get_index_at_point_in_layout (widget,
layout,
x_layout, y_layout, x, y, coords);
if (index == -1)
{
if (coords == ATK_XY_WINDOW || coords == ATK_XY_SCREEN)
index = g_utf8_strlen (scale_text, -1);
}
else
index = g_utf8_pointer_to_offset (scale_text, scale_text + index);
return index;
}
static void
gail_scale_real_initialize (AtkObject *obj,
gpointer data)
{
GailScale *gail_scale;
const gchar *txt;
PangoLayout *layout;
ATK_OBJECT_CLASS (gail_scale_parent_class)->initialize (obj, data);
gail_scale = GAIL_SCALE (obj);
gail_scale->textutil = gail_text_util_new ();
layout = gtk_scale_get_layout (GTK_SCALE (data));
if (layout)
{
txt = pango_layout_get_text (layout);
if (txt)
{
gail_text_util_text_setup (gail_scale->textutil, txt);
}
}
}
static void
text_entry_set_cursor_position(struct text_entry *entry,
int32_t x, int32_t y,
bool move_anchor)
{
int index, trailing;
const char *text;
uint32_t cursor;
pango_layout_xy_to_index(entry->layout,
x * PANGO_SCALE, y * PANGO_SCALE,
&index, &trailing);
text = pango_layout_get_text(entry->layout);
cursor = g_utf8_offset_to_pointer(text + index, trailing) - text;
if (move_anchor)
entry->anchor = cursor;
if (text_entry_has_preedit(entry)) {
text_entry_commit_and_reset(entry);
assert(!text_entry_has_preedit(entry));
}
if (entry->cursor == cursor)
return;
entry->cursor = cursor;
text_entry_update_layout(entry);
widget_schedule_redraw(entry->widget);
text_entry_update(entry);
}
static gboolean
on_entry_draw (GtkWidget *widget,
cairo_t *cr,
gpointer user_data)
{
g_debug (G_STRLOC ": %s", G_STRFUNC);
GtkStyleContext *style_context;
PangoContext *pango_context;
PangoLayout *layout;
const char *text;
gint cursor_index;
gint x, y;
style_context = gtk_widget_get_style_context (widget);
pango_context = gtk_widget_get_pango_context (widget);
layout = gtk_entry_get_layout (GTK_ENTRY (widget));
text = pango_layout_get_text (layout);
gtk_entry_get_layout_offsets (GTK_ENTRY (widget), &x, &y);
cursor_index = g_utf8_offset_to_pointer (text, gtk_editable_get_position (GTK_EDITABLE (widget))) - text;
gtk_render_insertion_cursor (style_context, cr, x, y, layout, cursor_index,
pango_context_get_base_dir (pango_context));
return FALSE;
}
bool wxFont::GTKSetPangoAttrs(PangoLayout* layout) const
{
if (!IsOk() || !(GetUnderlined() || GetStrikethrough()))
return false;
PangoAttrList* attrs = pango_attr_list_new();
PangoAttribute* a;
if (wx_pango_version_check(1,16,0))
{
// a PangoLayout which has leading/trailing spaces with underlined font
// is not correctly drawn by this pango version: Pango won't underline the spaces.
// This can be a problem; e.g. wxHTML rendering of underlined text relies on
// this behaviour. To workaround this problem, we use a special hack here
// suggested by pango maintainer Behdad Esfahbod: we prepend and append two
// empty space characters and give them a dummy colour attribute.
// This will force Pango to underline the leading/trailing spaces, too.
const char* text = pango_layout_get_text(layout);
const size_t n = strlen(text);
if ((n > 0 && text[0] == ' ') || (n > 1 && text[n - 1] == ' '))
{
wxCharBuffer buf(n + 6);
// copy the leading U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
memcpy(buf.data(), "\342\200\214", 3);
// copy the user string
memcpy(buf.data() + 3, text, n);
// copy the trailing U+200C ZERO WIDTH NON-JOINER encoded in UTF8 format
memcpy(buf.data() + 3 + n, "\342\200\214", 3);
pango_layout_set_text(layout, buf, n + 6);
// Add dummy attributes (use colour as it's invisible anyhow for 0
// width spaces) to ensure that the spaces in the beginning/end of the
// string are underlined too.
a = pango_attr_foreground_new(0x0057, 0x52A9, 0xD614);
a->start_index = 0;
a->end_index = 3;
pango_attr_list_insert(attrs, a);
a = pango_attr_foreground_new(0x0057, 0x52A9, 0xD614);
a->start_index = n + 3;
a->end_index = n + 6;
pango_attr_list_insert(attrs, a);
}
}
if (GetUnderlined())
{
a = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE);
pango_attr_list_insert(attrs, a);
}
if (GetStrikethrough())
{
a = pango_attr_strikethrough_new(true);
pango_attr_list_insert(attrs, a);
}
pango_layout_set_attributes(layout, attrs);
pango_attr_list_unref(attrs);
return true;
}
static PyObject *
pango_GetLayoutClusterPos(PyObject *self, PyObject *args) {
int i, len, w, h, index, prev_index;
int ltr_flag, rtl_flag;
double baseline, x, y, width, height, char_width, dx, dy;
void *LayoutObj;
PangoLayout *layout;
PangoLayoutIter *iter;
PangoLayoutIter *cluster_iter;
PangoRectangle rect, cluster_rect;
PangoDirection dir;
PyObject *ret;
PyObject *layout_data;
PyObject *cluster_data;
PyObject *cluster_range;
PyObject *cluster_index_data;
PyObject *cluster_index_range;
PyObject *glyph_data;
if (!PyArg_ParseTuple(args, "Oi", &LayoutObj, &len)) {
return NULL;
}
layout = PyCObject_AsVoidPtr(LayoutObj);
pango_layout_get_size(layout, &w, &h);
dx = 0.0;
if (pango_layout_get_alignment(layout) == PANGO_ALIGN_CENTER) {
dx = -0.5 * ((double) w) / PANGO_SCALE;
} else if (pango_layout_get_alignment(layout) == PANGO_ALIGN_RIGHT) {
dx = -1.0 * ((double) w) / PANGO_SCALE;
}
ret = PyTuple_New(5);
layout_data = PyList_New(0);
cluster_data = PyList_New(0);
cluster_index_data = PyList_New(0);
PyTuple_SetItem(ret, 0, layout_data);
PyTuple_SetItem(ret, 1, cluster_data);
PyTuple_SetItem(ret, 2, cluster_index_data);
iter = pango_layout_get_iter(layout);
cluster_iter = pango_layout_get_iter(layout);
prev_index = -1;
rtl_flag = 0;
ltr_flag = 0;
dy = ((double) pango_layout_iter_get_baseline(iter)) / PANGO_SCALE;
for (i = 0; i < len; i++) {
glyph_data = PyTuple_New(6);
//Processing EOL
while (pango_layout_iter_get_baseline(cluster_iter) !=
pango_layout_iter_get_baseline(iter)) {
pango_layout_iter_get_char_extents(iter, &rect);
x = ((double) rect.x) / PANGO_SCALE + dx;
PyTuple_SetItem(glyph_data, 0, PyFloat_FromDouble(x));
y = -1.0 * ((double) rect.y) / PANGO_SCALE + dy;
PyTuple_SetItem(glyph_data, 1, PyFloat_FromDouble(y));
width = ((double) rect.width) / PANGO_SCALE;
PyTuple_SetItem(glyph_data, 2, PyFloat_FromDouble(width));
height = ((double) rect.height) / PANGO_SCALE;
PyTuple_SetItem(glyph_data, 3, PyFloat_FromDouble(height));
baseline = -1.0 * ((double) pango_layout_iter_get_baseline(iter))
/ PANGO_SCALE + dy;
PyTuple_SetItem(glyph_data, 4, PyFloat_FromDouble(baseline));
//index processing
index=pango_layout_iter_get_index(iter);
prev_index = index;
PyTuple_SetItem(glyph_data, 5, PyInt_FromLong(index));
PyList_Append(layout_data, glyph_data);
pango_layout_iter_next_char(iter);
i++;
glyph_data = PyTuple_New(6);
}
pango_layout_iter_get_char_extents(iter, &rect);
pango_layout_iter_get_cluster_extents(cluster_iter, NULL, &cluster_rect);
//Processing cluster data
//Layout_data: (x,y,width,height,base_line,byte_index)
x = ((double) cluster_rect.x) / PANGO_SCALE + dx;
PyTuple_SetItem(glyph_data, 0, PyFloat_FromDouble(x));
y = -1.0 * ((double) cluster_rect.y) / PANGO_SCALE + dy;
PyTuple_SetItem(glyph_data, 1, PyFloat_FromDouble(y));
width = ((double) cluster_rect.width) / PANGO_SCALE;
PyTuple_SetItem(glyph_data, 2, PyFloat_FromDouble(width));
height = ((double) cluster_rect.height) / PANGO_SCALE;
PyTuple_SetItem(glyph_data, 3, PyFloat_FromDouble(height));
baseline = -1.0 * ((double) pango_layout_iter_get_baseline(cluster_iter))
/ PANGO_SCALE + dy;
PyTuple_SetItem(glyph_data, 4, PyFloat_FromDouble(baseline));
//index processing
index=pango_layout_iter_get_index(iter);
if (prev_index != -1){
if(index < prev_index){
rtl_flag=1;
}else if(index > prev_index){
ltr_flag=1;
}
}
prev_index = index;
PyTuple_SetItem(glyph_data, 5, PyInt_FromLong(index));
PyList_Append(layout_data, glyph_data);
//Iterating over chars to next cluster
if(cluster_rect.width > rect.width){
char_width = rect.width;
cluster_range = PyTuple_New(2);
cluster_index_range = PyTuple_New(2);
PyTuple_SetItem(cluster_range, 0, PyInt_FromLong(i));
PyTuple_SetItem(cluster_index_range, 0,
PyInt_FromLong(pango_layout_iter_get_index(iter)));
while(cluster_rect.width > char_width){
pango_layout_iter_next_char(iter);
pango_layout_iter_get_char_extents(iter, &rect);
char_width = char_width + rect.width;
i++;
}
PyTuple_SetItem(cluster_range, 1, PyInt_FromLong(i + 1));
PyTuple_SetItem(cluster_index_range, 1,
PyInt_FromLong(pango_layout_iter_get_index(iter)));
PyList_Append(cluster_data, cluster_range);
PyList_Append(cluster_index_data, cluster_index_range);
}
pango_layout_iter_next_char(iter);
pango_layout_iter_next_cluster(cluster_iter);
}
pango_layout_iter_free(iter);
pango_layout_iter_free(cluster_iter);
if(rtl_flag + ltr_flag == 2){
PyTuple_SetItem(ret, 3, PyBool_FromLong(1));
}else{
PyTuple_SetItem(ret, 3, PyBool_FromLong(0));
}
dir = pango_find_base_dir(pango_layout_get_text(layout),-1);
if(dir == PANGO_DIRECTION_RTL) {
PyTuple_SetItem(ret, 4, PyBool_FromLong(1));
} else {
PyTuple_SetItem(ret, 4, PyBool_FromLong(0));
}
return ret;
}
static VALUE
rg_text(VALUE self)
{
return CSTR2RVAL(pango_layout_get_text(_SELF(self)));
}
static gboolean
text_item_renderer (AboutRenderer *r, AboutState *state)
{
PangoLayout *layout = r->layout;
int age = state->now - r->start_time;
double rage = CLAMP (age / (double)r->duration, 0.0, 1.0);
GtkWidget *widget = state->anim_area;
GtkStyleContext *ctxt;
const int fade = 500;
int x, y, width, height;
cairo_t *cr;
GtkAllocation wa;
GdkRGBA color;
double alpha = 1;
if (age >= r->duration)
return FALSE;
if (r->fade_in && age < fade)
alpha = age / (double)fade;
else if (r->fade_out && r->duration - age < fade)
alpha = (r->duration - age) / (double)fade;
ctxt = gtk_widget_get_style_context (widget);
gtk_widget_get_allocation (widget, &wa);
x = (int)(PANGO_SCALE * wa.width *
(r->start.x + rage * (r->end.x - r->start.x)));
y = (int)(PANGO_SCALE * wa.height *
(r->start.y + rage * (r->end.y - r->start.y)));
if (r->expansion.count) {
PangoAttrList *attrlist = pango_layout_get_attributes (layout);
const char *p, *text = pango_layout_get_text (layout);
PangoRectangle ink, logical;
memset (&ink, 0, sizeof (ink));
logical = ink;
logical.width = (int)(rage * r->expansion.rate * r->natural_width / r->expansion.count);
p = text;
while (*p) {
const char *next = g_utf8_next_char (p);
gunichar uc = g_utf8_get_char (p);
PangoAttribute *attr;
if (uc == UNICODE_ZERO_WIDTH_SPACE_C) {
attr = pango_attr_shape_new (&ink, &logical);
attr->start_index = p - text;
attr->end_index = next - text;
pango_attr_list_change (attrlist, attr);
}
p = next;
}
pango_layout_set_attributes (layout, attrlist);
}
pango_layout_get_size (layout, &width, &height);
x -= width / 2;
y -= height / 2;
cr = r->cr;
gnm_style_context_get_color (ctxt, GTK_STATE_FLAG_NORMAL, &color);
color.alpha = alpha;
gdk_cairo_set_source_rgba (cr, &color);
cairo_move_to (cr, x / (double)PANGO_SCALE, y / (double)PANGO_SCALE);
pango_cairo_show_layout (cr, layout);
return TRUE;
}
PangoLayout*
gdip_pango_setup_layout (GpGraphics *graphics, GDIPCONST WCHAR *stringUnicode, int length, GDIPCONST GpFont *font,
GDIPCONST RectF *rc, RectF *box, GDIPCONST GpStringFormat *format, int **charsRemoved)
{
GpStringFormat *fmt;
PangoLayout *layout;
PangoContext *context;
PangoRectangle logical; /* logical size of text (used for alignment) */
PangoRectangle ink; /* ink size of text (to pixel boundaries) */
PangoAttrList *list = NULL;
GString *ftext;
PangoTabArray *tabs;
PangoLayoutIter *iter;
int i;
int FrameWidth; /* rc->Width (or rc->Height if vertical) */
int FrameHeight; /* rc->Height (or rc->Width if vertical) */
int FrameX; /* rc->X (or rc->Y if vertical) */
int FrameY; /* rc->Y (or rc->X if vertical) */
int y0; /* y0,y1,clipNN used for checking line positions vs. clip rectangle */
int y1;
double clipx1;
double clipx2;
double clipy1;
double clipy2;
int trimSpace; /* whether or not to trim the space */
gchar *text = ucs2_to_utf8 (stringUnicode, length);
if (!text)
return NULL;
length = strlen(text);
if (charsRemoved) {
(*charsRemoved) = GdipAlloc (sizeof (int) * length);
if (!*charsRemoved) {
GdipFree (text);
return NULL;
}
memset (*charsRemoved, 0, sizeof (int) * length);
}
/* TODO - Digit substitution */
// g_warning ("layout >%s< (%d) [x %g, y %g, w %g, h %g] [font %s, %g points]", text, length, rc->X, rc->Y, rc->Width, FrameHeight, font->face, font->emSize);
/* a NULL format is valid, it means get the generic default values (and free them later) */
if (!format) {
GpStatus status = GdipStringFormatGetGenericDefault ((GpStringFormat **)&fmt);
if (status != Ok) {
GdipFree (text);
return NULL;
}
} else {
fmt = (GpStringFormat *)format;
}
layout = pango_cairo_create_layout (graphics->ct);
/* context is owned by Pango (i.e. not referenced counted) do not free */
context = pango_layout_get_context (layout);
pango_layout_set_font_description (layout, gdip_get_pango_font_description ((GpFont*) font));
if (fmt->formatFlags & StringFormatFlagsDirectionVertical) {
FrameWidth = MAKE_SAFE_FOR_PANGO (SAFE_FLOAT_TO_UINT32 (rc->Height));
FrameHeight = MAKE_SAFE_FOR_PANGO (SAFE_FLOAT_TO_UINT32 (rc->Width));
FrameX = SAFE_FLOAT_TO_UINT32 (rc->Y);
FrameY = SAFE_FLOAT_TO_UINT32 (rc->X);
} else {
FrameWidth = MAKE_SAFE_FOR_PANGO (SAFE_FLOAT_TO_UINT32 (rc->Width));
FrameHeight = MAKE_SAFE_FOR_PANGO (SAFE_FLOAT_TO_UINT32 (rc->Height));
FrameX = SAFE_FLOAT_TO_UINT32 (rc->X);
FrameY = SAFE_FLOAT_TO_UINT32 (rc->Y);
}
//g_warning("FW: %d\tFH: %d", FrameWidth, FrameHeight);
if ((FrameWidth <= 0) || (fmt->formatFlags & StringFormatFlagsNoWrap)) {
pango_layout_set_width (layout, -1);
//g_warning ("Setting width: %d", -1);
} else {
pango_layout_set_width (layout, FrameWidth * PANGO_SCALE);
//g_warning ("Setting width: %d", FrameWidth * PANGO_SCALE);
}
if ((rc->Width != 0) && (rc->Height != 0) && ((fmt->formatFlags & StringFormatFlagsNoClip) == 0)) {
// g_warning ("\tclip [%g %g %g %g]", rc->X, rc->Y, rc->Width, rc->Height);
/* We do not call cairo_reset_clip because we want to take previous clipping into account */
/* Use rc instead of frame variables because this is pre-transform */
gdip_cairo_rectangle (graphics, rc->X, rc->Y, rc->Width, rc->Height, TRUE);
cairo_clip (graphics->ct);
}
/* with GDI+ the API not the renderer makes the direction decision */
pango_layout_set_auto_dir (layout, FALSE);
if (!(fmt->formatFlags & StringFormatFlagsDirectionRightToLeft) != !(fmt->formatFlags & StringFormatFlagsDirectionVertical)) {
pango_context_set_base_dir (context, PANGO_DIRECTION_WEAK_RTL);
pango_layout_context_changed (layout);
/* horizontal alignment */
switch (fmt->alignment) {
case StringAlignmentNear:
pango_layout_set_alignment (layout, PANGO_ALIGN_RIGHT);
break;
case StringAlignmentCenter:
pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
break;
case StringAlignmentFar:
pango_layout_set_alignment (layout, PANGO_ALIGN_LEFT);
break;
}
} else {
/* pango default base dir is WEAK_LTR, which is what we want */
/* horizontal alignment */
switch (fmt->alignment) {
case StringAlignmentNear:
pango_layout_set_alignment (layout, PANGO_ALIGN_LEFT);
break;
case StringAlignmentCenter:
pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER);
break;
case StringAlignmentFar:
pango_layout_set_alignment (layout, PANGO_ALIGN_RIGHT);
break;
}
}
#ifdef PANGO_VERSION_CHECK
#if PANGO_VERSION_CHECK(1,16,0)
if (fmt->formatFlags & StringFormatFlagsDirectionVertical) {
if (fmt->formatFlags & StringFormatFlagsDirectionRightToLeft) {
cairo_rotate (graphics->ct, M_PI/2.0);
cairo_translate (graphics->ct, 0, -FrameHeight);
pango_cairo_update_context (graphics->ct, context);
} else {
cairo_rotate (graphics->ct, 3.0*M_PI/2.0);
cairo_translate (graphics->ct, -FrameWidth, 0);
pango_cairo_update_context (graphics->ct, context);
}
/* only since Pango 1.16 */
pango_context_set_base_gravity (context, PANGO_GRAVITY_AUTO);
pango_context_set_gravity_hint (context, PANGO_GRAVITY_HINT_LINE);
pango_layout_context_changed (layout);
}
#endif
#endif
/* TODO - StringFormatFlagsDisplayFormatControl
scan and replace them ??? */
/* Trimming options seem to apply only to the end of the string - gdi+ will still wrap
* with preference to word first, then character. Unfortunately, pango doesn't have
* any way to differentiate wrapping behavior from trimming behavior that I could find */
pango_layout_set_wrap (layout, PANGO_WRAP_WORD_CHAR);
switch (fmt->trimming) {
case StringTrimmingNone:
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_NONE);
break;
case StringTrimmingCharacter:
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_NONE);
break;
case StringTrimmingWord:
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_NONE);
break;
case StringTrimmingEllipsisCharacter:
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_END);
if (!(fmt->formatFlags & StringFormatFlagsNoWrap))
pango_layout_set_height (layout, FrameHeight == 0 ? G_MAXINT32 : FrameHeight * PANGO_SCALE);
break;
case StringTrimmingEllipsisWord:
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_END);
if (!(fmt->formatFlags & StringFormatFlagsNoWrap))
pango_layout_set_height (layout, FrameHeight == 0 ? G_MAXINT32 : FrameHeight * PANGO_SCALE);
break;
case StringTrimmingEllipsisPath:
pango_layout_set_ellipsize (layout, PANGO_ELLIPSIZE_MIDDLE);
if (!(fmt->formatFlags & StringFormatFlagsNoWrap))
pango_layout_set_height (layout, FrameHeight == 0 ? G_MAXINT32 : FrameHeight * PANGO_SCALE);
break;
}
/* some stuff can only be done by manipulating the attributes (but we can avoid this most of the time) */
if ((fmt->formatFlags & StringFormatFlagsNoFontFallback) || (font->style & (FontStyleUnderline | FontStyleStrikeout))) {
list = gdip_get_layout_attributes (layout);
/* StringFormatFlagsNoFontFallback */
if (fmt->formatFlags & StringFormatFlagsNoFontFallback) {
PangoAttribute *attr = pango_attr_fallback_new (FALSE);
attr->start_index = 0;
attr->end_index = length;
pango_attr_list_insert (list, attr);
}
if (font->style & FontStyleUnderline) {
PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
attr->start_index = 0;
attr->end_index = length;
pango_attr_list_insert (list, attr);
}
if (font->style & FontStyleStrikeout) {
PangoAttribute *attr = pango_attr_strikethrough_new (TRUE);
attr->start_index = 0;
attr->end_index = length;
pango_attr_list_insert (list, attr);
}
}
if (fmt->numtabStops > 0) {
float tabPosition;
tabs = pango_tab_array_new (fmt->numtabStops, FALSE);
tabPosition = fmt->firstTabOffset;
for (i = 0; i < fmt->numtabStops; i++) {
tabPosition += fmt->tabStops[i];
pango_tab_array_set_tab (tabs, i, PANGO_TAB_LEFT, (gint)min (tabPosition, PANGO_MAX) * PANGO_SCALE);
}
pango_layout_set_tabs (layout, tabs);
pango_tab_array_free (tabs);
}
//g_warning ("length before ws removal: %d", length);
trimSpace = (fmt->formatFlags & StringFormatFlagsMeasureTrailingSpaces) == 0;
switch (fmt->hotkeyPrefix) {
case HotkeyPrefixHide:
/* we need to remove any accelerator from the string */
ftext = gdip_process_string (text, length, 1, trimSpace, NULL, charsRemoved);
break;
case HotkeyPrefixShow:
/* optimization: is seems that we never see the hotkey when using an underline font */
if (font->style & FontStyleUnderline) {
/* so don't bother drawing it (and simply add the '&' character) */
ftext = gdip_process_string (text, length, 1, trimSpace, NULL, charsRemoved);
} else {
/* find accelerator and add attribute to the next character (unless it's the prefix too) */
if (!list)
list = gdip_get_layout_attributes (layout);
ftext = gdip_process_string (text, length, 1, trimSpace, list, charsRemoved);
}
break;
default:
ftext = gdip_process_string (text, length, 0, trimSpace, NULL, charsRemoved);
break;
}
length = ftext->len;
//g_warning ("length after ws removal: %d", length);
if (list) {
pango_layout_set_attributes (layout, list);
pango_attr_list_unref (list);
}
// g_warning("\tftext>%s< (%d)", ftext->str, -1);
pango_layout_set_text (layout, ftext->str, ftext->len);
GdipFree (text);
g_string_free(ftext, TRUE);
/* Trim the text after the last line for ease of counting lines/characters */
/* Also prevents drawing whole lines outside the boundaries if NoClip was specified */
/* In case of pre-existing clipping, use smaller of clip rectangle or our specified height */
if (FrameHeight > 0) {
cairo_clip_extents (graphics->ct, &clipx1, &clipy1, &clipx2, &clipy2);
if (clipy2 > 0 && !(fmt->formatFlags & StringFormatFlagsNoClip))
clipy2 = min (clipy2, FrameHeight + FrameY);
else
clipy2 = FrameHeight + FrameY;
iter = pango_layout_get_iter (layout);
do {
if (iter == NULL)
break;
pango_layout_iter_get_line_yrange (iter, &y0, &y1);
//g_warning("yrange: %d %d clipy2: %f", y0 / PANGO_SCALE, y1 / PANGO_SCALE, clipy2);
/* StringFormatFlagsLineLimit */
if (((fmt->formatFlags & StringFormatFlagsLineLimit) && y1 / PANGO_SCALE > clipy2) || (y0 / PANGO_SCALE > clipy2)) {
PangoLayoutLine *line = pango_layout_iter_get_line_readonly (iter);
pango_layout_set_text (layout, pango_layout_get_text (layout), line->start_index);
break;
}
} while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
}
pango_layout_get_pixel_extents (layout, &ink, &logical);
// g_warning ("\tlogical\t[x %d, y %d, w %d, h %d][x %d, y %d, w %d, h %d]", logical.x, logical.y, logical.width, logical.height, ink.x, ink.y, ink.width, ink.height);
if ((fmt->formatFlags & StringFormatFlagsNoFitBlackBox) == 0) {
/* By default don't allow overhang - ink space may be larger than logical space */
if (fmt->formatFlags & StringFormatFlagsDirectionVertical) {
box->X = min (ink.y, logical.y);
box->Y = min (ink.x, logical.x);
box->Height = max (ink.width, logical.width);
box->Width = max (ink.height, logical.height);
} else {
box->X = min (ink.x, logical.x);
box->Y = min (ink.y, logical.y);
box->Height = max (ink.height, logical.height);
box->Width = max (ink.width, logical.width);
}
} else {
/* Allow overhang */
if (fmt->formatFlags & StringFormatFlagsDirectionVertical) {
box->X = logical.y;
box->Y = logical.x;
box->Height = logical.width;
box->Width = logical.height;
} else {
box->X = logical.x;
box->Y = logical.y;
box->Height = logical.height;
box->Width = logical.width;
}
}
// g_warning ("\tbox\t[x %g, y %g, w %g, h %g]", box->X, box->Y, box->Width, box->Height);
/* vertical alignment*/
if (fmt->formatFlags & StringFormatFlagsDirectionVertical) {
switch (fmt->lineAlignment) {
case StringAlignmentNear:
break;
case StringAlignmentCenter:
box->X += (rc->Width - box->Width) / 2;
break;
case StringAlignmentFar:
box->X += (rc->Width - box->Width);
break;
}
} else {
switch (fmt->lineAlignment) {
case StringAlignmentNear:
break;
case StringAlignmentCenter:
box->Y += (rc->Height - box->Height) / 2;
break;
case StringAlignmentFar:
box->Y += (rc->Height - box->Height);
break;
}
}
// g_warning ("va-box\t[x %g, y %g, w %g, h %g]", box->X, box->Y, box->Width, box->Height);
pango_cairo_update_layout (graphics->ct, layout);
return layout;
}
GpStatus
pango_MeasureString (GpGraphics *graphics, GDIPCONST WCHAR *stringUnicode, int length, GDIPCONST GpFont *font, GDIPCONST RectF *rc,
GDIPCONST GpStringFormat *format, RectF *boundingBox, int *codepointsFitted, int *linesFilled)
{
PangoLayout *layout;
PangoLayoutLine *line;
PangoRectangle logical;
PangoLayoutIter *iter;
int *charsRemoved = NULL;
cairo_save (graphics->ct);
layout = gdip_pango_setup_layout (graphics, stringUnicode, length, font, rc, boundingBox, format, &charsRemoved);
if (!layout) {
cairo_restore (graphics->ct);
return OutOfMemory;
}
if (codepointsFitted) {
int charsFitted;
int lastIndex;
int y0;
int y1;
double min_x;
double max_x;
double max_y;
const char *layoutText;
if (boundingBox && format && (format->formatFlags & StringFormatFlagsDirectionVertical)) {
min_x = boundingBox->Y;
max_x = boundingBox->Y + boundingBox->Height;
max_y = boundingBox->X + boundingBox->Width;
} else if (boundingBox) {
min_x = boundingBox->X;
max_x = boundingBox->X + boundingBox->Width;
max_y = boundingBox->Y + boundingBox->Height;
} else if (format && (format->formatFlags & StringFormatFlagsDirectionVertical)) {
min_x = rc->Y;
max_x = rc->Y + rc->Height;
max_y = rc->X + rc->Width;
} else {
min_x = rc->X;
max_x = rc->X + rc->Width;
max_y = rc->Y + rc->Height;
}
lastIndex = 0;
iter = pango_layout_get_iter (layout);
do {
if (iter == NULL)
break;
pango_layout_iter_get_line_yrange (iter, &y0, &y1);
if (y0 / PANGO_SCALE >= max_y)
break;
if (pango_layout_iter_at_last_line (iter)) {
do {
pango_layout_iter_get_char_extents (iter, &logical);
/* check both max and min to catch right-to-left text, also width may be negative */
if ((logical.x / PANGO_SCALE > max_x || (logical.x + logical.width) / PANGO_SCALE > max_x) || (logical.x / PANGO_SCALE < min_x || (logical.x + logical.width) / PANGO_SCALE < min_x))
break;
lastIndex = pango_layout_iter_get_index (iter);
} while (pango_layout_iter_next_char (iter));
break;
} else {
line = pango_layout_iter_get_line_readonly (iter);
lastIndex = line->start_index + line->length - 1;
}
} while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
layoutText = pango_layout_get_text (layout);
/* this can happen when the string ends in a newline */
if (lastIndex >= strlen (layoutText))
lastIndex = strlen (layoutText) - 1;
/* Add back in any & characters removed and the final newline characters (if any) */
charsFitted = g_utf8_strlen (layoutText, lastIndex + 1) + charsRemoved [lastIndex];
//g_warning("lastIndex: %d\t\tcharsRemoved: %d", lastIndex, charsRemoved[lastIndex]);
/* safe because of null termination */
switch (layoutText [lastIndex + 1]) {
case '\r':
charsFitted++;
if (layoutText [lastIndex + 2] == '\n')
charsFitted++;
break;
case '\n':
charsFitted++;
break;
}
*codepointsFitted = charsFitted;
}
GdipFree (charsRemoved);
if (linesFilled) {
*linesFilled = pango_layout_get_line_count (layout);
// g_warning ("linesFilled %d", *linesFilled);
}
// else g_warning ("linesFilled %d", pango_layout_get_line_count (layout));
g_object_unref (layout);
cairo_restore (graphics->ct);
return Ok;
}
JNIEXPORT void JNICALL
Java_org_gnome_pango_PangoAttributeOverride_pango_1attribute_1set_1indexes
(
JNIEnv* env,
jclass cls,
jlong _self,
jlong _layout,
jint _offset,
jint _width
)
{
PangoAttribute* self;
PangoLayout* layout;
gint offset;
gint width;
const char* text;
char* alpha;
char* omega;
guint start;
guint end;
// convert paramter self
self = (PangoAttribute*) _self;
// convert paramter layout
layout = (PangoLayout*) _layout;
// convert parameter offset
offset = (gint) _offset;
// convert parameter width
width = (gint) _width;
// convert to bounds
/*
* Get the text out of the layout, and then work out what
* the offset and offset+width work out to in byte terms.
*/
text = pango_layout_get_text(layout);
alpha = g_utf8_offset_to_pointer(text, offset);
omega = g_utf8_offset_to_pointer(text, offset + width);
start = alpha - text;
end = omega - text;
// set fields
self->start_index = start;
self->end_index = end;
// cleanup parameter self
// cleanup parameter layout
// cleanup parameter offset
// cleanup parameter width
// local text should not be modified or freed
}