/**
* gnome_print_pango_layout:
* @gpc: a #GnomePrintContext
* @layout: a #PangoLayout
*
* Draws the text in @layout into the specified #GnomePrintContext. The
* text is drawn in the current color unless that has been overridden
* by attributes set on the layout and the glyphs are positioned so
* that the left edge of the baseline is at the current point.
**/
void
gnome_print_pango_layout (GnomePrintContext *gpc, PangoLayout *layout)
{
g_return_if_fail (GNOME_IS_PRINT_CONTEXT (gpc));
g_return_if_fail (PANGO_IS_LAYOUT (layout));
g_return_if_fail (is_gnome_print_layout (layout));
print_pango_layout (gpc, layout);
}
/**
* gnome_print_pango_layout_line:
* @gpc: a #GnomePrintContext
* @line: a #PangoLayoutLine
*
* Draws the text in @line into the specified #GnomePrintContext. The
* text is drawn in the current color unless that has been overridden
* by attributes set on the layout and the glyphs are positioned so
* that the left edge of the baseline is at the current point.
**/
void
gnome_print_pango_layout_line (GnomePrintContext *gpc, PangoLayoutLine *line)
{
g_return_if_fail (GNOME_IS_PRINT_CONTEXT (gpc));
g_return_if_fail (line->layout != NULL);
g_return_if_fail (PANGO_IS_LAYOUT (line->layout));
g_return_if_fail (is_gnome_print_layout (line->layout));
print_pango_layout_line (gpc, line);
}
/**
* gtk_render_layout:
* @context: a #GtkStyleContext
* @cr: a #cairo_t
* @x: X origin
* @y: Y origin
* @layout: the #PangoLayout to render
*
* Renders @layout on the coordinates @x, @y
*
* Since: 3.0
**/
void
gtk_render_layout (GtkStyleContext *context,
cairo_t *cr,
gdouble x,
gdouble y,
PangoLayout *layout)
{
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
g_return_if_fail (PANGO_IS_LAYOUT (layout));
g_return_if_fail (cr != NULL);
gtk_do_render_layout (context, cr, x, y, layout);
}
static void
fo_doc_cairo_do_callbacks (cairo_t *cr,
PangoLayout *layout,
gint line_first,
gint line_last,
gint x,
gint y)
{
PangoLayoutIter *iter;
g_return_if_fail (cr != NULL);
g_return_if_fail (PANGO_IS_LAYOUT (layout));
g_return_if_fail (line_first >= 0);
/*g_return_if_fail (line_last >= line_first &&
line_last <= g_slist_length (pango_layout_get_lines (layout)) - 1);*/
iter = pango_layout_get_iter (layout);
gint line_number = -1;
do
{
PangoRectangle logical_rect;
PangoLayoutLine *line;
int baseline;
line_number++;
if (line_number < line_first)
{
continue;
}
line = pango_layout_iter_get_line (iter);
pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
baseline = pango_layout_iter_get_baseline (iter);
fo_doc_cairo_do_line_callbacks (cr,
line,
x + logical_rect.x,
y - baseline);
if (line_number >= line_last)
{
break;
}
}
while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
}
void
pango_clutter_ensure_glyph_cache_for_layout (PangoLayout *layout)
{
PangoContext *context;
PangoFontMap *fontmap;
PangoRenderer *renderer;
PangoLayoutIter *iter;
g_return_if_fail (PANGO_IS_LAYOUT (layout));
context = pango_layout_get_context (layout);
fontmap = pango_context_get_font_map (context);
g_return_if_fail (PANGO_CLUTTER_IS_FONT_MAP (fontmap));
renderer = _pango_clutter_font_map_get_renderer
(PANGO_CLUTTER_FONT_MAP (fontmap));
if ((iter = pango_layout_get_iter (layout)) == NULL)
return;
do
{
PangoLayoutLine *line;
GSList *l;
line = pango_layout_iter_get_line_readonly (iter);
for (l = line->runs; l; l = l->next)
{
PangoLayoutRun *run = l->data;
PangoGlyphString *glyphs = run->glyphs;
int i;
for (i = 0; i < glyphs->num_glyphs; i++)
{
PangoGlyphInfo *gi = &glyphs->glyphs[i];
if (!run->item->analysis.font)
/* Font not found */
continue;
pango_clutter_renderer_get_cached_glyph (renderer,
run->item->analysis.font,
gi->glyph);
}
}
}
while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
}
/**
* pango_renderer_draw_layout:
* @renderer: a #PangoRenderer
* @layout: a #PangoLayout
* @x: X position of left edge of baseline, in user space coordinates
* in Pango units.
* @y: Y position of left edge of baseline, in user space coordinates
* in Pango units.
*
* Draws @layout with the specified #PangoRenderer.
*
* Since: 1.8
**/
void
pango_renderer_draw_layout (PangoRenderer *renderer,
PangoLayout *layout,
int x,
int y)
{
PangoLayoutIter *iter;
g_return_if_fail (PANGO_IS_RENDERER (renderer));
g_return_if_fail (PANGO_IS_LAYOUT (layout));
/* We only change the matrix if the renderer isn't already
* active.
*/
if (!renderer->active_count)
{
PangoContext *context = pango_layout_get_context (layout);
pango_renderer_set_matrix (renderer,
pango_context_get_matrix (context));
}
pango_renderer_activate (renderer);
iter = pango_layout_get_iter (layout);
do
{
PangoRectangle logical_rect;
PangoLayoutLine *line;
int baseline;
line = pango_layout_iter_get_line_readonly (iter);
pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
baseline = pango_layout_iter_get_baseline (iter);
pango_renderer_draw_layout_line (renderer,
line,
x + logical_rect.x,
y + baseline);
}
while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
pango_renderer_deactivate (renderer);
}
/**
* gnome_print_pango_layout_print:
* @gpc: a #GnomePrintContext
* @pl: the #PangoLayout to print
*
* Draws the text in @pl into the specified #GnomePrintContext. The
* text is drawn in the current color unless that has been overridden
* by attributes set on the layout and the glyphs are positioned so
* that the left edge of the baseline is at the point (0, 0). This function
* is obsolete; use gnome_print_pango_layout() instead.
**/
void
gnome_print_pango_layout_print (GnomePrintContext *gpc, PangoLayout* pl)
{
/* For compatibility with old code we allow users to use
* this to print PangoLayout's from contexts that we
* didn't create ourself. The spacing may be very bad,
* because of hinting differences, but no worse than
* before.
*/
g_return_if_fail (GNOME_IS_PRINT_CONTEXT (gpc));
g_return_if_fail (PANGO_IS_LAYOUT (pl));
gnome_print_gsave (gpc);
gnome_print_moveto (gpc, 0, 0);
print_pango_layout (gpc, pl);
gnome_print_grestore (gpc);
}
void
gimp_pango_layout_set_weight (PangoLayout *layout,
PangoWeight weight)
{
PangoAttrList *attrs;
PangoAttribute *attr;
g_return_if_fail (PANGO_IS_LAYOUT (layout));
attrs = pango_attr_list_new ();
attr = pango_attr_weight_new (weight);
attr->start_index = 0;
attr->end_index = -1;
pango_attr_list_insert (attrs, attr);
pango_layout_set_attributes (layout, attrs);
pango_attr_list_unref (attrs);
}
void
gimp_pango_layout_set_scale (PangoLayout *layout,
gdouble scale)
{
PangoAttrList *attrs;
PangoAttribute *attr;
g_return_if_fail (PANGO_IS_LAYOUT (layout));
attrs = pango_attr_list_new ();
attr = pango_attr_scale_new (scale);
attr->start_index = 0;
attr->end_index = -1;
pango_attr_list_insert (attrs, attr);
pango_layout_set_attributes (layout, attrs);
pango_attr_list_unref (attrs);
}
/**
* gdk_pango_layout_get_clip_region: (skip)
* @layout: a #PangoLayout
* @x_origin: X pixel where you intend to draw the layout with this clip
* @y_origin: Y pixel where you intend to draw the layout with this clip
* @index_ranges: array of byte indexes into the layout, where even members of array are start indexes and odd elements are end indexes
* @n_ranges: number of ranges in @index_ranges, i.e. half the size of @index_ranges
*
* Obtains a clip region which contains the areas where the given ranges
* of text would be drawn. @x_origin and @y_origin are the top left point
* to center the layout. @index_ranges should contain
* ranges of bytes in the layout's text.
*
* Note that the regions returned correspond to logical extents of the text
* ranges, not ink extents. So the drawn layout may in fact touch areas out of
* the clip region. The clip region is mainly useful for highlightling parts
* of text, such as when text is selected.
*
* Return value: a clip region containing the given ranges
**/
cairo_region_t*
gdk_pango_layout_get_clip_region (PangoLayout *layout,
gint x_origin,
gint y_origin,
const gint *index_ranges,
gint n_ranges)
{
PangoLayoutIter *iter;
cairo_region_t *clip_region;
g_return_val_if_fail (PANGO_IS_LAYOUT (layout), NULL);
g_return_val_if_fail (index_ranges != NULL, NULL);
clip_region = cairo_region_create ();
iter = pango_layout_get_iter (layout);
do
{
PangoRectangle logical_rect;
cairo_region_t *line_region;
gint baseline;
pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
baseline = pango_layout_iter_get_baseline (iter);
line_region = layout_iter_get_line_clip_region(iter,
x_origin + PANGO_PIXELS (logical_rect.x),
y_origin + PANGO_PIXELS (baseline),
index_ranges,
n_ranges);
cairo_region_union (clip_region, line_region);
cairo_region_destroy (line_region);
}
while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
return clip_region;
}
/**
* gtk_snapshot_render_layout:
* @snapshot: a #GtkSnapshot
* @context: the #GtkStyleContext to use
* @x: X origin of the rectangle
* @y: Y origin of the rectangle
* @layout: the #PangoLayout to render
*
* Creates a render node for rendering @layout according to the style
* information in @context, and appends it to the current node of @snapshot,
* without changing the current node.
*
* Since: 3.90
*/
void
gtk_snapshot_render_layout (GtkSnapshot *snapshot,
GtkStyleContext *context,
gdouble x,
gdouble y,
PangoLayout *layout)
{
const GdkRGBA *fg_color;
graphene_rect_t bounds;
GtkBorder shadow_extents;
PangoRectangle ink_rect;
GtkCssValue *shadow;
cairo_t *cr;
g_return_if_fail (snapshot != NULL);
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
g_return_if_fail (PANGO_IS_LAYOUT (layout));
fg_color = _gtk_css_rgba_value_get_rgba (_gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_COLOR));
shadow = _gtk_style_context_peek_property (context, GTK_CSS_PROPERTY_TEXT_SHADOW);
pango_layout_get_pixel_extents (layout, &ink_rect, NULL);
_gtk_css_shadows_value_get_extents (shadow, &shadow_extents);
graphene_rect_init (&bounds,
ink_rect.x - shadow_extents.left,
ink_rect.y - shadow_extents.top,
ink_rect.width + shadow_extents.left + shadow_extents.right,
ink_rect.height + shadow_extents.top + shadow_extents.bottom);
gtk_snapshot_translate_2d (snapshot, x, y);
cr = gtk_snapshot_append_cairo_node (snapshot, &bounds, "Text<%dchars>", pango_layout_get_character_count (layout));
_gtk_css_shadows_value_paint_layout (shadow, cr, layout);
gdk_cairo_set_source_rgba (cr, fg_color);
pango_cairo_show_layout (cr, layout);
cairo_destroy (cr);
gtk_snapshot_translate_2d (snapshot, -x, -y);
}
/**
* gail_text_util_get_text:
* @textutil: A #GailTextUtil
* @layout: A gpointer which is a PangoLayout, a GtkTreeView of NULL
* @function: An enumeration specifying whether to return the text before, at, or
* after the offset.
* @boundary_type: The boundary type.
* @offset: The offset of the text in the GailTextUtil
* @start_offset: Address of location in which the start offset is returned
* @end_offset: Address of location in which the end offset is returned
*
* This function gets the requested substring from the text in the GtkTextUtil.
* The layout is used only for getting the text on a line. The value is NULL
* for a GtkTextView which is not wrapped, is a GtkTextView for a GtkTextView
* which is wrapped and is a PangoLayout otherwise.
*
* Returns: the substring requested
**/
gchar*
gail_text_util_get_text (GailTextUtil *textutil,
gpointer layout,
GailOffsetType function,
AtkTextBoundary boundary_type,
gint offset,
gint *start_offset,
gint *end_offset)
{
GtkTextIter start, end;
gint line_number;
GtkTextBuffer *buffer;
g_return_val_if_fail (GAIL_IS_TEXT_UTIL (textutil), NULL);
buffer = textutil->buffer;
if (buffer == NULL)
{
*start_offset = 0;
*end_offset = 0;
return NULL;
}
if (!gtk_text_buffer_get_char_count (buffer))
{
*start_offset = 0;
*end_offset = 0;
return g_strdup ("");
}
gtk_text_buffer_get_iter_at_offset (buffer, &start, offset);
end = start;
switch (function)
{
case GAIL_BEFORE_OFFSET:
switch (boundary_type)
{
case ATK_TEXT_BOUNDARY_CHAR:
gtk_text_iter_backward_char(&start);
break;
case ATK_TEXT_BOUNDARY_WORD_START:
if (!gtk_text_iter_starts_word (&start))
gtk_text_iter_backward_word_start (&start);
end = start;
gtk_text_iter_backward_word_start(&start);
break;
case ATK_TEXT_BOUNDARY_WORD_END:
if (gtk_text_iter_inside_word (&start) &&
!gtk_text_iter_starts_word (&start))
gtk_text_iter_backward_word_start (&start);
while (!gtk_text_iter_ends_word (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
end = start;
gtk_text_iter_backward_word_start(&start);
while (!gtk_text_iter_ends_word (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
break;
case ATK_TEXT_BOUNDARY_SENTENCE_START:
if (!gtk_text_iter_starts_sentence (&start))
gtk_text_iter_backward_sentence_start (&start);
end = start;
gtk_text_iter_backward_sentence_start (&start);
break;
case ATK_TEXT_BOUNDARY_SENTENCE_END:
if (gtk_text_iter_inside_sentence (&start) &&
!gtk_text_iter_starts_sentence (&start))
gtk_text_iter_backward_sentence_start (&start);
while (!gtk_text_iter_ends_sentence (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
end = start;
gtk_text_iter_backward_sentence_start (&start);
while (!gtk_text_iter_ends_sentence (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
break;
case ATK_TEXT_BOUNDARY_LINE_START:
if (layout == NULL)
{
line_number = gtk_text_iter_get_line (&start);
if (line_number == 0)
{
gtk_text_buffer_get_iter_at_offset (buffer,
&start, 0);
}
else
{
gtk_text_iter_backward_line (&start);
gtk_text_iter_forward_line (&start);
}
end = start;
gtk_text_iter_backward_line (&start);
}
else if GTK_IS_TEXT_VIEW (layout)
{
GtkTextView *view = GTK_TEXT_VIEW (layout);
gtk_text_view_backward_display_line_start (view, &start);
end = start;
gtk_text_view_backward_display_line (view, &start);
}
else if (PANGO_IS_LAYOUT (layout))
get_pango_text_offsets (PANGO_LAYOUT (layout),
buffer,
function,
boundary_type,
offset,
start_offset,
end_offset,
&start,
&end);
break;
case ATK_TEXT_BOUNDARY_LINE_END:
if (layout == NULL)
{
line_number = gtk_text_iter_get_line (&start);
if (line_number == 0)
{
gtk_text_buffer_get_iter_at_offset (buffer,
&start, 0);
end = start;
}
else
{
gtk_text_iter_backward_line (&start);
end = start;
while (!gtk_text_iter_ends_line (&start))
{
if (!gtk_text_iter_backward_char (&start))
break;
}
gtk_text_iter_forward_to_line_end (&end);
}
}
else if GTK_IS_TEXT_VIEW (layout)
{
GtkTextView *view = GTK_TEXT_VIEW (layout);
gtk_text_view_backward_display_line_start (view, &start);
if (!gtk_text_iter_is_start (&start))
{
gtk_text_view_backward_display_line (view, &start);
end = start;
if (!gtk_text_iter_is_start (&start))
{
gtk_text_view_backward_display_line (view, &start);
gtk_text_view_forward_display_line_end (view, &start);
}
gtk_text_view_forward_display_line_end (view, &end);
}
else
{
end = start;
}
}
else if (PANGO_IS_LAYOUT (layout))
get_pango_text_offsets (PANGO_LAYOUT (layout),
buffer,
function,
boundary_type,
offset,
start_offset,
end_offset,
&start,
&end);
break;
}
