void context_t::update(cairo_t* cr)
{
pango_cairo_update_context(cr, pango_context.get());
layouts.erase(std::remove_if(layouts.begin(), layouts.end(), [](const std::weak_ptr<layout_t>& layout) -> bool { return layout.expired(); }), layouts.end());
for(auto& layout_ref : layouts)
{
if(auto layout = layout_ref.lock())
pango_layout_context_changed(layout->layout.get());
}
}
static void
_fo_doc_cairo_create_cr (FoDocCairo *fo_doc_cairo,
gdouble width,
gdouble height,
GError **error)
{
g_return_if_fail (error == NULL || *error == NULL);
cairo_surface_t *surface = fo_doc_cairo->surface_create (fo_doc_cairo->current_filename,
width,
height);
if (cairo_surface_status (surface) != CAIRO_STATUS_SUCCESS)
{
g_set_error (error,
FO_DOC_ERROR,
FO_DOC_ERROR_FAILED,
"%s",
N_(fo_doc_error_messages[FO_DOC_ERROR_FAILED]));
return;
}
cairo_surface_set_fallback_resolution (surface,
PIXELS_PER_INCH,
PIXELS_PER_INCH);
fo_doc_cairo->cr = cairo_create (surface);
cairo_surface_destroy (surface);
if (cairo_status (fo_doc_cairo->cr) != CAIRO_STATUS_SUCCESS)
{
g_set_error (error,
FO_DOC_ERROR,
FO_DOC_ERROR_FAILED,
"%s",
N_(fo_doc_error_messages[FO_DOC_ERROR_FAILED]));
return;
}
pango_cairo_update_context (fo_doc_cairo->cr,
FO_DOC (fo_doc_cairo)->pango_context);
fo_doc_cairo->page_width = width;
fo_doc_cairo->page_height = height;
}
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;
}
static void
hippo_canvas_context_win_update_pango(HippoCanvasContextWin *context_win,
cairo_t *cr)
{
pango_cairo_update_context(cr, context_win->pango);
}
/*
* render functions
*/
static void
begin_render(DiaRenderer *self, const Rectangle *update)
{
DiaCairoRenderer *renderer = DIA_CAIRO_RENDERER (self);
real onedu = 0.0;
real lmargin = 0.0, tmargin = 0.0;
gboolean paginated = renderer->surface && /* only with our own pagination, not GtkPrint */
cairo_surface_get_type (renderer->surface) == CAIRO_SURFACE_TYPE_PDF && !renderer->skip_show_page;
if (renderer->surface && !renderer->cr)
renderer->cr = cairo_create (renderer->surface);
else
g_assert (renderer->cr);
/* remember current state, so we can start from new with every page */
cairo_save (renderer->cr);
if (paginated && renderer->dia) {
DiagramData *data = renderer->dia;
/* Dia's paper.width already contains the scale, cairo needs it without
* Similar for margins, Dia's without, but cairo wants them?
*/
real width = (data->paper.lmargin + data->paper.width * data->paper.scaling + data->paper.rmargin)
* (72.0 / 2.54) + 0.5;
real height = (data->paper.tmargin + data->paper.height * data->paper.scaling + data->paper.bmargin)
* (72.0 / 2.54) + 0.5;
/* "Changes the size of a PDF surface for the current (and
* subsequent) pages." Pagination setup? */
cairo_pdf_surface_set_size (renderer->surface, width, height);
lmargin = data->paper.lmargin / data->paper.scaling;
tmargin = data->paper.tmargin / data->paper.scaling;
}
cairo_scale (renderer->cr, renderer->scale, renderer->scale);
/* to ensure no clipping at top/left we need some extra gymnastics,
* otherwise a box with a line witdh one one pixel might loose the
* top/left border as in bug #147386 */
ensure_minimum_one_device_unit (renderer, &onedu);
if (update && paginated) {
cairo_rectangle (renderer->cr, lmargin, tmargin,
update->right - update->left, update->bottom - update->top);
cairo_clip (renderer->cr);
cairo_translate (renderer->cr, -update->left + lmargin, -update->top + tmargin);
} else
cairo_translate (renderer->cr, -renderer->dia->extents.left + onedu, -renderer->dia->extents.top + onedu);
/* no more blurred UML diagrams */
cairo_set_antialias (renderer->cr, CAIRO_ANTIALIAS_NONE);
/* clear background */
if (renderer->with_alpha)
{
cairo_set_operator (renderer->cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (renderer->cr,
renderer->dia->bg_color.red,
renderer->dia->bg_color.green,
renderer->dia->bg_color.blue,
0.0);
}
else
{
cairo_set_source_rgba (renderer->cr,
renderer->dia->bg_color.red,
renderer->dia->bg_color.green,
renderer->dia->bg_color.blue,
1.0);
}
cairo_paint (renderer->cr);
if (renderer->with_alpha)
{
/* restore to default drawing */
cairo_set_operator (renderer->cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (renderer->cr,
renderer->dia->bg_color.red,
renderer->dia->bg_color.green,
renderer->dia->bg_color.blue,
1.0);
}
#ifdef HAVE_PANGOCAIRO_H
if (!renderer->layout)
renderer->layout = pango_cairo_create_layout (renderer->cr);
#endif
cairo_set_fill_rule (renderer->cr, CAIRO_FILL_RULE_EVEN_ODD);
#if 0 /* try to work around bug #341481 - no luck */
{
cairo_font_options_t *fo = cairo_font_options_create ();
cairo_get_font_options (renderer->cr, fo);
/* try to switch off kerning */
cairo_font_options_set_hint_style (fo, CAIRO_HINT_STYLE_NONE);
cairo_font_options_set_hint_metrics (fo, CAIRO_HINT_METRICS_OFF);
cairo_set_font_options (renderer->cr, fo);
cairo_font_options_destroy (fo);
#ifdef HAVE_PANGOCAIRO_H
pango_cairo_update_context (renderer->cr, pango_layout_get_context (renderer->layout));
pango_layout_context_changed (renderer->layout);
#endif
}
#endif
DIAG_STATE(renderer->cr)
}
/*
* render functions
*/
static void
begin_render(DiaRenderer *self)
{
DiaCairoRenderer *renderer = DIA_CAIRO_RENDERER (self);
if (renderer->surface)
renderer->cr = cairo_create (renderer->surface);
else
g_assert (renderer->cr);
cairo_scale (renderer->cr, renderer->scale, renderer->scale);
cairo_translate (renderer->cr, -renderer->dia->extents.left, -renderer->dia->extents.top);
/* clear background */
if (renderer->with_alpha)
{
cairo_set_operator (renderer->cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (renderer->cr,
renderer->dia->bg_color.red,
renderer->dia->bg_color.green,
renderer->dia->bg_color.blue,
0.0);
}
else
{
cairo_set_source_rgba (renderer->cr,
renderer->dia->bg_color.red,
renderer->dia->bg_color.green,
renderer->dia->bg_color.blue,
1.0);
}
cairo_paint (renderer->cr);
if (renderer->with_alpha)
{
/* restore to default drawing */
cairo_set_operator (renderer->cr, CAIRO_OPERATOR_OVER);
cairo_set_source_rgba (renderer->cr,
renderer->dia->bg_color.red,
renderer->dia->bg_color.green,
renderer->dia->bg_color.blue,
1.0);
}
#ifdef HAVE_PANGOCAIRO_H
if (!renderer->layout)
renderer->layout = pango_cairo_create_layout (renderer->cr);
#endif
cairo_set_fill_rule (renderer->cr, CAIRO_FILL_RULE_EVEN_ODD);
#if 0 /* try to work around bug #341481 - no luck */
{
cairo_font_options_t *fo = cairo_font_options_create ();
cairo_get_font_options (renderer->cr, fo);
/* try to switch off kerning */
cairo_font_options_set_hint_style (fo, CAIRO_HINT_STYLE_NONE);
cairo_font_options_set_hint_metrics (fo, CAIRO_HINT_METRICS_OFF);
cairo_set_font_options (renderer->cr, fo);
cairo_font_options_destroy (fo);
#ifdef HAVE_PANGOCAIRO_H
pango_cairo_update_context (renderer->cr, pango_layout_get_context (renderer->layout));
pango_layout_context_changed (renderer->layout);
#endif
}
#endif
DIAG_STATE(renderer->cr)
}
static void
draw_string(DiaRenderer *self,
const char *text,
Point *pos, Alignment alignment,
Color *color)
{
DiaCairoRenderer *renderer = DIA_CAIRO_RENDERER (self);
int len = strlen(text);
DIAG_NOTE(g_message("draw_string(%d) %f,%f %s",
len, pos->x, pos->y, text));
if (len < 1) return; /* shouldn't this be handled by Dia's core ? */
cairo_set_source_rgba (renderer->cr, color->red, color->green, color->blue, 1.0);
#ifdef HAVE_PANGOCAIRO_H
cairo_save (renderer->cr);
/* alignment calculation done by pangocairo? */
pango_layout_set_alignment (renderer->layout, alignment == ALIGN_CENTER ? PANGO_ALIGN_CENTER :
alignment == ALIGN_RIGHT ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT);
pango_layout_set_text (renderer->layout, text, len);
{
PangoLayoutIter *iter = pango_layout_get_iter(renderer->layout);
int bline = pango_layout_iter_get_baseline(iter);
/* although we give the alignment above we need to adjust the start point */
PangoRectangle extents;
int shift;
pango_layout_iter_get_line_extents (iter, NULL, &extents);
shift = alignment == ALIGN_CENTER ? PANGO_RBEARING(extents)/2 :
alignment == ALIGN_RIGHT ? PANGO_RBEARING(extents) : 0;
cairo_move_to (renderer->cr, pos->x - (double)shift / PANGO_SCALE, pos->y - (double)bline / PANGO_SCALE);
pango_layout_iter_free (iter);
}
/* does this hide bug #341481? */
pango_cairo_update_context (renderer->cr, pango_layout_get_context (renderer->layout));
pango_layout_context_changed (renderer->layout);
pango_cairo_show_layout (renderer->cr, renderer->layout);
cairo_restore (renderer->cr);
#else
/* using the 'toy API' */
{
cairo_text_extents_t extents;
double x = 0, y = 0;
cairo_set_source_rgba (renderer->cr, color->red, color->green, color->blue, 1.0);
cairo_text_extents (renderer->cr,
text,
&extents);
y = pos->y; /* ?? */
switch (alignment) {
case ALIGN_LEFT:
x = pos->x;
break;
case ALIGN_CENTER:
x = pos->x - extents.width / 2 + +extents.x_bearing;
break;
case ALIGN_RIGHT:
x = pos->x - extents.width + extents.x_bearing;
break;
}
cairo_move_to (renderer->cr, x, y);
cairo_show_text (renderer->cr, text);
}
#endif
DIAG_STATE(renderer->cr)
}
static VALUE
rg_update_pango_context(VALUE self, VALUE context)
{
pango_cairo_update_context(RVAL2CRCONTEXT(self), RVAL2PANGOCONTEXT(context));
return self;
}
