static PangoGlyph pango_font_get_glyph(PangoFont* font, PangoContext* context, gunichar wc)
{
PangoGlyph result = 0;
gchar buffer[7];
gint length = g_unichar_to_utf8(wc, buffer);
g_return_val_if_fail(length, 0);
GList* items = pango_itemize(context, buffer, 0, length, NULL, NULL);
if (g_list_length(items) == 1) {
PangoItem* item = reinterpret_cast<PangoItem*>(items->data);
PangoFont* tmpFont = item->analysis.font;
item->analysis.font = font;
PangoGlyphString* glyphs = pango_glyph_string_new();
pango_shape(buffer, length, &item->analysis, glyphs);
item->analysis.font = tmpFont;
if (glyphs->num_glyphs == 1)
result = glyphs->glyphs[0].glyph;
else
g_warning("didn't get 1 glyph but %d", glyphs->num_glyphs);
pango_glyph_string_free(glyphs);
}
g_list_foreach(items, (GFunc)pango_item_free, NULL);
g_list_free(items);
return result;
}
static VALUE
rpango_shape(VALUE self, VALUE text, VALUE analysis)
{
VALUE ret;
PangoGlyphString* glyphs = pango_glyph_string_new();
StringValue(text);
pango_shape(RSTRING_PTR(text), RSTRING_LEN(text), RVAL2BOXED(analysis, PANGO_TYPE_ANALYSIS), glyphs);
ret = BOXED2RVAL(glyphs, PANGO_TYPE_GLYPH_STRING);
pango_glyph_string_free (glyphs);
return ret;
}
static VALUE
rg_s_shape(G_GNUC_UNUSED VALUE self, VALUE rbtext, VALUE rbanalysis)
{
const gchar *text = RVAL2CSTR(rbtext);
long length = RSTRING_LEN(rbtext);
PangoAnalysis *analysis = RVAL2PANGOANALYSIS(rbanalysis);
PangoGlyphString *glyphs = pango_glyph_string_new();
pango_shape(text, length, analysis, glyphs);
return rb_ensure(rpango_shape_result, (VALUE)glyphs,
rpango_shape_ensure, (VALUE)glyphs);
}
GList *FontSupport::layoutText(const WFont& font,
const std::string& utf8,
std::vector<PangoGlyphString *>& glyphs,
int& width)
{
PANGO_LOCK;
enabledFontFormats = enabledFontFormats_;
FontMatch match = matchFont(font);
PangoAttrList *attrs = pango_attr_list_new();
pango_context_set_font_description(context_, match.pangoFontDescription());
GList *items
= pango_itemize(context_, utf8.c_str(), 0, utf8.length(), attrs, nullptr);
width = 0;
for (GList *elem = items; elem; elem = elem->next) {
PangoItem *item = (PangoItem *)elem->data;
PangoAnalysis *analysis = &item->analysis;
PangoGlyphString *gl = pango_glyph_string_new();
pango_shape(utf8.c_str() + item->offset, item->length, analysis, gl);
glyphs.push_back(gl);
if (device_) {
currentFont_ = analysis->font;
WTextItem textItem
= device_->measureText(WString::fromUTF8(utf8.substr(item->offset,
item->length)),
-1, false);
width += pangoUnitsFromDouble(textItem.width());
currentFont_ = nullptr;
} else
width += pango_glyph_string_get_width(gl);
}
pango_attr_list_unref(attrs);
return items;
}
//__________________________________________________________________
void _HYPlatformGraphicPane::_DisplayChar (char c,int t, int l)
{
if (c>=40 && c<=100) {
if (charCachePangoItems == NULL) {
_BuildCharGlyphs();
}
PangoItem * pitem = (PangoItem*) g_list_first (charCachePangoItems)->data;
if (!cachedCharacterGlyphs[c-40]) {
PangoGlyphString * newString = pango_glyph_string_new ();
pango_shape (&c, 1, &pitem->analysis, newString);
cachedCharacterGlyphs[c-40] = newString;
}
gdk_draw_glyphs (thePane, theContext, pitem->analysis.font,l,t,(PangoGlyphString* )cachedCharacterGlyphs[c-40]);
} else {
_DisplayText (c, t, l, false);
}
}
// Helper function used in the implementation of ScriptShape
HRESULT PangoCharsToGlyph(SCRIPT_CACHE *psc, const char * chars, int cInChars, int cMaxItems, PangoGlyphString **pGlpyhs, int * pcItems)
{
ScriptCacheImplementation * cache = reinterpret_cast<ScriptCacheImplementation*>(*psc);
PangoContext * pangoContext;
cache->m_vwGraphics->GetTextStyleContext(reinterpret_cast<HDC*>(&pangoContext));
PangoAttrList * attributes_list = pango_attr_list_new();
GList * items = pango_itemize(pangoContext, chars, 0, cInChars, attributes_list, NULL);
int length = g_list_length(items);
int glyphsCount = 0;
pGlpyhs[0] = NULL;
for(int i = 0; i < length; ++i)
{
PangoItem* item = static_cast<PangoItem*>(g_list_nth_data(items, i));
PangoGlyphString * ptrPangoGlyphString = pango_glyph_string_new();
pango_shape(chars + item->offset, item->length, &item->analysis, ptrPangoGlyphString);
glyphsCount += ptrPangoGlyphString->num_glyphs;
if (glyphsCount > cMaxItems)
{
pango_glyph_string_free(ptrPangoGlyphString);
FreeGlyphs(reinterpret_cast<WORD*>(pGlpyhs), cMaxItems);
pango_item_free(item);
pango_attr_list_unref(attributes_list);
g_list_free(items);
return E_OUTOFMEMORY;
}
pGlpyhs[i] = ptrPangoGlyphString;
if (i < (cMaxItems - 1))
pGlpyhs[i + 1] = NULL; // null term the list (used for deleting etc.)
pango_item_free(item);
}
pango_attr_list_unref(attributes_list);
g_list_free(items);
*pcItems = glyphsCount;
return S_OK;
}
GtkPaintContext::GtkPaintContext() {
myPixmap = 0;
myWidth = 0;
myHeight = 0;
myContext = 0;
myFontDescription = 0;
myAnalysis.lang_engine = 0;
myAnalysis.level = 0;
myAnalysis.language = 0;
myAnalysis.extra_attrs = 0;
myString = pango_glyph_string_new();
myTextGC = 0;
myFillGC = 0;
myBackGC = 0;
myStringHeight = -1;
mySpaceWidth = -1;
}
static VALUE
rglyph_initialize(VALUE self)
{
G_INITIALIZE(self, pango_glyph_string_new());
return Qnil;
}
/* Shapes the ellipsis using the font and is_cjk information computed by
* update_ellipsis_shape() from the first character in the gap.
*/
static void
shape_ellipsis (EllipsizeState *state)
{
PangoAttrList *attrs = pango_attr_list_new ();
GSList *run_attrs;
PangoItem *item;
PangoGlyphString *glyphs;
GSList *l;
PangoAttribute *fallback;
const char *ellipsis_text;
int i;
/* Create/reset state->ellipsis_run
*/
if (!state->ellipsis_run)
{
state->ellipsis_run = g_slice_new (PangoGlyphItem);
state->ellipsis_run->glyphs = pango_glyph_string_new ();
state->ellipsis_run->item = NULL;
}
if (state->ellipsis_run->item)
{
pango_item_free (state->ellipsis_run->item);
state->ellipsis_run->item = NULL;
}
/* Create an attribute list
*/
run_attrs = pango_attr_iterator_get_attrs (state->gap_start_attr);
for (l = run_attrs; l; l = l->next)
{
PangoAttribute *attr = l->data;
attr->start_index = 0;
attr->end_index = G_MAXINT;
pango_attr_list_insert (attrs, attr);
}
g_slist_free (run_attrs);
fallback = pango_attr_fallback_new (FALSE);
fallback->start_index = 0;
fallback->end_index = G_MAXINT;
pango_attr_list_insert (attrs, fallback);
/* First try using a specific ellipsis character in the best matching font
*/
if (state->ellipsis_is_cjk)
ellipsis_text = "\342\213\257"; /* U+22EF: MIDLINE HORIZONTAL ELLIPSIS, used for CJK */
else
ellipsis_text = "\342\200\246"; /* U+2026: HORIZONTAL ELLIPSIS */
item = itemize_text (state, ellipsis_text, attrs);
/* If that fails we use "..." in the first matching font
*/
if (!item->analysis.font ||
!_pango_engine_shape_covers (item->analysis.shape_engine, item->analysis.font,
item->analysis.language, g_utf8_get_char (ellipsis_text)))
{
pango_item_free (item);
/* Modify the fallback iter while it is inside the PangoAttrList; Don't try this at home
*/
((PangoAttrInt *)fallback)->value = TRUE;
ellipsis_text = "...";
item = itemize_text (state, ellipsis_text, attrs);
}
pango_attr_list_unref (attrs);
state->ellipsis_run->item = item;
/* Now shape
*/
glyphs = state->ellipsis_run->glyphs;
pango_shape (ellipsis_text, strlen (ellipsis_text),
&item->analysis, glyphs);
state->ellipsis_width = 0;
for (i = 0; i < glyphs->num_glyphs; i++)
state->ellipsis_width += glyphs->glyphs[i].geometry.width;
}
JNIEXPORT jobject JNICALL
Java_gnu_java_awt_peer_gtk_GdkFontPeer_getGlyphVector
(JNIEnv *env, jobject self,
jstring chars,
jobject font,
jobject fontRenderContext)
{
struct peerfont *pfont = NULL;
GList *items = NULL, *i = NULL;
gchar *str = NULL;
int len, j;
double *native_extents;
int *native_codes;
jintArray java_codes = NULL;
jdoubleArray java_extents = NULL;
gdk_threads_enter ();
pfont = (struct peerfont *)NSA_GET_FONT_PTR (env, self);
g_assert (pfont != NULL);
len = (*gdk_env())->GetStringUTFLength (env, chars);
str = (gchar *)(*env)->GetStringUTFChars (env, chars, NULL);
g_assert (str != NULL);
if (attrs == NULL)
attrs = pango_attr_list_new ();
if (len > 0 && str[len-1] == '\0')
len--;
items = pango_itemize (pfont->ctx, str, 0, len, attrs, NULL);
i = g_list_first (items);
if (i == NULL)
{
java_extents = (*env)->NewDoubleArray (env, 0);
java_codes = (*env)->NewIntArray (env, 0);
}
else
{
PangoGlyphString *glyphs;
PangoItem *item = (PangoItem *)i->data;
pango_context_set_font_description (pfont->ctx, pfont->desc);
pango_context_set_language (pfont->ctx, gtk_get_default_language());
pango_context_load_font (pfont->ctx, pfont->desc);
glyphs = pango_glyph_string_new ();
g_assert (glyphs != NULL);
pango_shape (str + item->offset, item->length,
&(item->analysis), glyphs);
if (glyphs->num_glyphs > 0)
{
int x = 0;
double scale = ((double) PANGO_SCALE);
java_extents = (*env)->NewDoubleArray (env, glyphs->num_glyphs * NUM_GLYPH_METRICS);
java_codes = (*env)->NewIntArray (env, glyphs->num_glyphs);
native_extents = (*env)->GetDoubleArrayElements (env, java_extents, NULL);
native_codes = (*env)->GetIntArrayElements (env, java_codes, NULL);
for (j = 0; j < glyphs->num_glyphs; ++j)
{
PangoRectangle ink;
PangoRectangle logical;
PangoGlyphGeometry *geom = &glyphs->glyphs[j].geometry;
pango_font_get_glyph_extents (pfont->font,
glyphs->glyphs[j].glyph,
&ink, &logical);
native_codes[j] = glyphs->glyphs[j].glyph;
native_extents[ GLYPH_LOG_X(j) ] = (logical.x) / scale;
native_extents[ GLYPH_LOG_Y(j) ] = (- logical.y) / scale;
native_extents[ GLYPH_LOG_WIDTH(j) ] = (logical.width) / scale;
native_extents[ GLYPH_LOG_HEIGHT(j) ] = (logical.height) / scale;
native_extents[ GLYPH_INK_X(j) ] = (ink.x) / scale;
native_extents[ GLYPH_INK_Y(j) ] = (- ink.y) / scale;
native_extents[ GLYPH_INK_WIDTH(j) ] = (ink.width) / scale;
native_extents[ GLYPH_INK_HEIGHT(j) ] = (ink.height) / scale;
native_extents[ GLYPH_POS_X(j) ] = (x + geom->x_offset) / scale;
native_extents[ GLYPH_POS_Y(j) ] = ( - geom->y_offset) / scale;
x += geom->width;
}
(*env)->ReleaseDoubleArrayElements (env, java_extents, native_extents, 0);
(*env)->ReleaseIntArrayElements (env, java_codes, native_codes, 0);
}
pango_glyph_string_free (glyphs);
}
(*env)->ReleaseStringUTFChars (env, chars, str);
for (i = g_list_first (items); i != NULL; i = g_list_next (i))
g_free (i->data);
g_list_free (items);
gdk_threads_leave ();
return (*env)->NewObject (env,
glyphVector_class,
glyphVector_ctor,
java_extents, java_codes,
font, fontRenderContext);
}