pangoUnitsToDouble(i)
pangoUnitsFromDouble(d)
pangoExtentsToPixels(inclusive, nearest)
pangoMatrixCopy(object)
pangoMatrixTranslate(object, tx, ty)
pangoMatrixScale(object, scale.x, scale.y)
pangoMatrixRotate(object, degrees)
pangoMatrixConcat(object, new.matrix)
pangoMatrixTransformPoint(object, x, y)
pangoMatrixTransformDistance(object, dx, dy)
pangoMatrixTransformRectangle(object, rect)
pangoMatrixTransformPixelRectangle(object, rect)
pangoMatrixGetFontScaleFactor(object)
pangoGlyphStringNew()
pangoGlyphStringCopy(object)
pangoGlyphStringSetSize(object, new.len)
pangoGlyphStringExtents(object, font)
pangoGlyphStringExtentsRange(object, start, end, font)
pangoGlyphStringGetWidth(object)
pangoGlyphStringIndexToX(object, text, analysis, index, trailing)
pangoGlyphStringXToIndex(object, text, analysis, x.pos)
pangoGlyphStringGetLogicalWidths(object, text, embedding.level)
pangoGlyphItemSplit(orig, text, split.index)
pangoGlyphItemApplyAttrs(glyph.item, text, list)
pangoGlyphItemLetterSpace(glyph.item, text, log.attrs)
pangoGlyphItemGetLogicalWidths(glyph.item, text)
pangoGlyphItemIterInitStart(object, glyph.item, text)
pangoGlyphItemIterInitEnd(object, glyph.item, text)
pangoGlyphItemIterNextCluster(object)
pangoGlyphItemIterPrevCluster(object)pangoShape produces a string of glyphs which
can be measured or drawn to the screen. The following
structures are used to store information about
glyphs.PangoRectanglePangoRectangle structure represents a rectangle. It is frequently
used to represent the logical or ink extents of a single glyph or section
of text. (See, for instance, pangoFontGetGlyphExtents)
PangoRectangle is a transparent-type. xywidthheightPangoMatrixx_device = x_user * matrix->xx + y_user * matrix->xy + matrix->x0; y_device = x_user * matrix->yx + y_user * matrix->yy + matrix->y0;Since 1.6
xxxyyxyyx0y0PangoGlyphInfoPangoGlyphInfo structure represents a single glyph together with
positioning information and visual attributes.
It contains the following fields. glyphgeometryPangoGlyphGeometry] the positional information about the glyph.attrPangoGlyphVisAttr] the visual attributes of the glyph.PangoGlyphGeometryPangoGlyphGeometry structure contains width and positioning
information for a single glyph. widthxOffsetyOffsetPangoGlyphVisAttrPangoGlyphStringPangoGlyphString structure is used to store strings
of glyphs with geometry and visual attribute information.
The storage for the glyph information is owned
by the structure which simplifies memory management. numGlyphsglyphsPangoGlyphInfo] a list of PangoGlyphInfo structures of length num_glyphs.logClustersPangoGlyphItemPangoGlyphItem is a pair of a PangoItem and the glyphs
resulting from shaping the text corresponding to an item.
As an example of the usage of PangoGlyphItem, the results
of shaping text with PangoLayout is a list of PangoLayoutLine,
each of which contains a list of PangoGlyphItem. itemPangoItem] a PangoItem structure that provides information
about a segment of text.glyphsPangoGlyphString] the glyphs obtained by shaping the text
corresponding to item.PangoGlyphItemIterPangoGlyphItemIter is an iterator over the clusters in a
PangoGlyphItem. The forward direction of the
iterator is the logical direction of text. That is, with increasing
start.index and start.char values. If glyph.item is right-to-left
(that is, if glyph_item->item->analysis.level is odd),
then start.glyph decreases as the iterator moves forward. Moreover,
in right-to-left cases, start.glyph is greater than end.glyph.
An iterator should be initialized using either of
pangoGlyphItemIterInitStart and
pangoGlyphItemIterInitEnd, for forward and backward iteration
respectively, and walked over using any desired mixture of
pangoGlyphItemIterNextCluster and
pangoGlyphItemIterPrevCluster. A common idiom for doing a
forward iteration over the clusters is:
PangoGlyphItemIter cluster_iter;
gboolean have_cluster;
for (have_cluster = pango_glyph_item_iter_init_start (&cluster_iter,
glyph_item, text);
have_cluster;
have_cluster = pango_glyph_item_iter_next_cluster (&cluster_iter))
{
...
}
Note that text is the start of the text for layout, which is then
indexed by glyph_item->item->offset to get to the
text of glyph.item. The start.index and end.index values can directly
index into text. The start.glyph, end.glyph, start.char, and end.char
values however are zero-based for the glyph.item. For each cluster, the
item pointed at by the start variables is included in the cluster while
the one pointed at by end variables is not.
None of the members of a PangoGlyphItemIter should be modified manually.
Since 1.22 glyph_itemPangoGlyphItem] the PangoGlyphItem this iterator iterates overtextglyph.item refers tostart_glyphstart_indexstart_charend_glyphend_indexend_char