17 #if defined VG_FEATURE_FONT && \ 18 (defined VG_FEATURE_FONT_FREETYPE_VECTOR || defined VG_FEATURE_FONT_FREETYPE_BITMAP) && \ 19 (VG_FEATURE_FONT == VG_FEATURE_FONT_FREETYPE_VECTOR || VG_FEATURE_FONT == VG_FEATURE_FONT_FREETYPE_BITMAP) 29 #include <LLVG_impl.h> 30 #include <LLVG_FONT_impl.h> 32 #if defined (VG_FEATURE_FONT_EXTERNAL) 33 #include <LLEXT_RES_impl.h> 34 #include <freetype/internal/ftmemory.h> 39 #include "microvg_trace.h" 49 #define GET_SCALE(s,f) ((s) / (f)->units_per_EM) 55 #define LOG_MICROVG_FONT_START(fn) LOG_MICROVG_START(LOG_MICROVG_FONT_ID, CONCAT_DEFINES(LOG_MICROVG_FONT_, fn)) 56 #define LOG_MICROVG_FONT_END(fn) LOG_MICROVG_END(LOG_MICROVG_FONT_ID, CONCAT_DEFINES(LOG_MICROVG_FONT_, fn)) 77 extern int32_t SNIX_get_resource(jchar* path, SNIX_resource* resource);
87 static void _dispose_registered_font(
void* faceHandle);
100 static FT_Error __load_memory_font(FT_Face* face,
void* data,
int length);
112 static FT_Error __load_internal_font(FT_Face* face, jchar* font_name);
115 #if defined (VG_FEATURE_FONT_EXTERNAL) 126 static FT_Error __load_external_font(FT_Face* face, jchar* font_name);
142 static unsigned long __read_external_resource(FT_Stream stream,
unsigned long offset,
unsigned char* buffer,
unsigned long count);
151 static void __close_external_resource(FT_Stream stream);
153 #endif // VG_FEATURE_FONT_EXTERNAL 160 FT_Renderer renderer;
162 #if defined VG_FEATURE_FONT && defined VG_FEATURE_FONT_FREETYPE_VECTOR && (VG_FEATURE_FONT == VG_FEATURE_FONT_FREETYPE_VECTOR) 163 const char* renderer_name =
"vglite_renderer";
165 #if defined VG_FEATURE_FONT && defined VG_FEATURE_FONT_FREETYPE_BITMAP && (VG_FEATURE_FONT == VG_FEATURE_FONT_FREETYPE_BITMAP) 166 const char* renderer_name =
"smooth";
174 void MICROVG_FONT_FREETYPE_initialize(
void) {
176 FT_Error error = FT_Init_FreeType(&library);
177 if(FT_ERR(Ok) == error) {
178 renderer = FT_RENDERER(FT_Get_Module(library, renderer_name));
180 MEJ_LOG_INFO_MICROVG(
"Freetype renderer: %s\n", FT_MODULE_CLASS(renderer)->module_name);
183 MEJ_LOG_ERROR_MICROVG(
"No renderer found with name %s\n", renderer_name);
187 MEJ_LOG_ERROR_MICROVG(
"Internal freetype error initializing library, ID = %d\n",error);
196 jint LLVG_FONT_IMPL_load_font(jchar* font_name, jboolean complex_layout) {
198 LOG_MICROVG_FONT_START(load);
201 jint ret = LLVG_FONT_UNLOADED;
204 if(complex_layout && !LLVG_FONT_IMPL_has_complex_layouter()){
205 ret = LLVG_FONT_UNLOADED;
209 FT_Error error = __load_internal_font(&face, font_name);
211 #if defined (VG_FEATURE_FONT_EXTERNAL) 212 if (FT_ERR(Cannot_Open_Resource) == error) {
214 error = __load_external_font(&face, font_name);
216 #endif // VG_FEATURE_FONT_EXTERNAL 218 if (FT_ERR(Ok) == error) {
220 FT_Select_Charmap(face , ft_encoding_unicode);
221 MEJ_LOG_INFO_MICROVG(
"Freetype font loaded: %s\n", (
const char*)font_name);
223 SNI_registerResource((
void*)face, (SNI_closeFunction)&_dispose_registered_font, JNULL);
225 #if defined (VG_FEATURE_FONT_COMPLEX_LAYOUT) 226 if(JTRUE == complex_layout){
229 #endif // VG_FEATURE_FONT_COMPLEX_LAYOUT 233 else if (FT_ERR(Cannot_Open_Resource) != error){
234 MEJ_LOG_ERROR_MICROVG(
"An error occurred during font loading: 0x%x, refer to fterrdef.h\n", error);
237 MEJ_LOG_ERROR_MICROVG(
"Resource not found: %s\n", (
const char*)font_name);
242 LOG_MICROVG_FONT_END(load);
247 jfloat LLVG_FONT_IMPL_string_width(jchar* text, jint faceHandle, jfloat size, jfloat letterSpacing) {
249 LOG_MICROVG_FONT_START(stringWidth);
252 if (LLVG_FONT_UNLOADED == faceHandle) {
253 ret = (jfloat)LLVG_RESOURCE_CLOSED;
257 FT_Face face = (FT_Face) faceHandle;
258 float scaled_width = 0.f;
261 float scale = GET_SCALE(size, face);
264 long unscaled_width = 0;
268 int previous_glyph_index = 0;
271 int previous_advance_x;
272 int previous_offset_x;
277 int length = (int)SNI_getArrayLength(text);
278 MICROVG_HELPER_layout_configure(faceHandle, text, length);
280 while(MICROVG_HELPER_layout_load_glyph(&glyph_index, &advance_x, &advance_y, &offset_x, &offset_y)) {
282 if (0 == previous_glyph_index){
284 if(0 != face->glyph->metrics.width) {
285 unscaled_width -= face->glyph->metrics.horiBearingX;
288 unscaled_width -= face->glyph->advance.x;
292 unscaled_width += advance_x;
293 previous_glyph_index = glyph_index;
297 previous_advance_x = advance_x;
298 previous_offset_x = offset_x;
302 if(0 != face->glyph->metrics.width) {
303 unscaled_width -= previous_advance_x;
304 unscaled_width += face->glyph->metrics.horiBearingX;
305 unscaled_width += face->glyph->metrics.width;
306 unscaled_width += previous_offset_x;
309 if(0 != unscaled_width){
310 unscaled_width -= previous_advance_x;
313 scaled_width = ((scale * (float) unscaled_width) + (((float) nb_chars - 1) * letterSpacing));
319 LOG_MICROVG_FONT_END(stringWidth);
324 jfloat LLVG_FONT_IMPL_string_height(jchar* text, jint faceHandle, jfloat size) {
326 LOG_MICROVG_FONT_START(stringHeight);
329 if (LLVG_FONT_UNLOADED == faceHandle) {
330 ret = (jfloat)LLVG_RESOURCE_CLOSED;
334 FT_Face face = (FT_Face) faceHandle;
335 float scaled_height = 0.f;
338 float scale = GET_SCALE(size, face);
340 FT_Pos horiBearingYTop = 0;
341 FT_Pos horiBearingYBottom = 0;
345 int previous_glyph_index = 0;
352 int length = (int)SNI_getArrayLength(text);
353 MICROVG_HELPER_layout_configure(faceHandle, text, length);
355 while(MICROVG_HELPER_layout_load_glyph(&glyph_index, &advance_x, &advance_y, &offset_x, &offset_y)) {
358 FT_Pos yBottom = face->glyph->metrics.horiBearingY - face->glyph->metrics.height;
359 horiBearingYBottom = (0 == previous_glyph_index) ? yBottom : MEJ_MIN(yBottom, horiBearingYBottom);
360 horiBearingYTop = MEJ_MAX(face->glyph->metrics.horiBearingY, horiBearingYTop);
362 previous_glyph_index = glyph_index;
365 scaled_height = scale * (float) (horiBearingYTop - horiBearingYBottom);
371 LOG_MICROVG_FONT_END(stringHeight);
376 jfloat LLVG_FONT_IMPL_get_baseline_position(jint faceHandle, jfloat size) {
378 LOG_MICROVG_FONT_START(baseline);
381 if (LLVG_FONT_UNLOADED == faceHandle) {
382 ret = (jfloat)LLVG_RESOURCE_CLOSED;
386 FT_Face face = (FT_Face) faceHandle;
387 float advance_y = 0.f;
390 float scale = GET_SCALE(size, face);
391 advance_y = (face->ascender * scale);
396 LOG_MICROVG_FONT_END(baseline);
401 jfloat LLVG_FONT_IMPL_get_height(jint faceHandle, jfloat size) {
403 LOG_MICROVG_FONT_START(height);
406 if (LLVG_FONT_UNLOADED == faceHandle) {
407 ret = (jfloat)LLVG_RESOURCE_CLOSED;
410 FT_Face face = (FT_Face) faceHandle;
411 float scale = GET_SCALE(size, face);
412 ret = face->height * scale;
415 LOG_MICROVG_FONT_END(height);
420 void LLVG_FONT_IMPL_dispose(jint faceHandle) {
421 _dispose_registered_font((
void*)faceHandle);
425 bool LLVG_FONT_IMPL_has_complex_layouter(
void){
426 #ifdef VG_FEATURE_FONT_COMPLEX_LAYOUT 437 static void _dispose_registered_font(
void* faceHandle) {
438 FT_Face face = (FT_Face) faceHandle;
441 SNI_unregisterResource((
void*)face, (SNI_closeFunction)&_dispose_registered_font);
443 #if defined (VG_FEATURE_FONT_EXTERNAL) 446 FT_Stream stream = face->stream;
447 #endif // VG_FEATURE_FONT_EXTERNAL 451 #if defined (VG_FEATURE_FONT_EXTERNAL) 454 if (&__close_external_resource == stream->close) {
455 ft_mem_free(library->memory, stream);
457 #endif // VG_FEATURE_FONT_EXTERNAL 460 static FT_Error __load_memory_font(FT_Face* face,
void* data,
int length) {
461 return FT_New_Memory_Face(library, data, length, 0, face);
464 static FT_Error __load_internal_font(FT_Face* face, jchar* font_name) {
465 SNIX_resource font_resource;
468 if (0 == SNIX_get_resource(font_name, &font_resource)) {
469 error = __load_memory_font(face, font_resource.data, font_resource.size);
472 error = FT_ERR(Cannot_Open_Resource);
477 #if defined (VG_FEATURE_FONT_EXTERNAL) 479 static FT_Error __load_external_font(FT_Face* face, jchar* font_name) {
484 char const* ext_path = &(((
char const*)(font_name))[1]) ;
485 RES_ID resource_id = LLEXT_RES_open(ext_path);
487 if (0 <= resource_id) {
489 int32_t resource_size = LLEXT_RES_available(resource_id);
492 int32_t base_address = LLEXT_RES_getBaseAddress(resource_id);
494 if (-1 != base_address) {
498 error = __load_memory_font(face, (
void*)base_address, resource_size);
501 LLEXT_RES_close(resource_id);
507 args.flags = FT_OPEN_STREAM;
509 args.stream = (FT_StreamRec*)ft_mem_alloc(library->memory,
sizeof(FT_StreamRec), &error);
511 if (FT_ERR(Ok) == error) {
513 args.stream->base = NULL;
514 args.stream->size = resource_size;
515 args.stream->pos = 0;
516 args.stream->descriptor.value = resource_id;
518 args.stream->read = &__read_external_resource;
519 args.stream->close = &__close_external_resource;
521 error = FT_Open_Face(library, &args, 0, face);
524 error = FT_ERR(Out_Of_Memory);
529 error = FT_ERR(Cannot_Open_Resource);
535 static unsigned long __read_external_resource(FT_Stream stream,
unsigned long offset,
unsigned char* buffer,
unsigned long count) {
536 int32_t size = count;
537 RES_ID resource_id = (RES_ID)(stream->descriptor.value);
538 LLEXT_RES_seek(resource_id, offset);
539 LLEXT_RES_read(resource_id, buffer, &size);
543 static void __close_external_resource(FT_Stream stream) {
544 RES_ID resource_id = (RES_ID)(stream->descriptor.value);
545 LLEXT_RES_close(resource_id);
548 #endif // VG_FEATURE_FONT_EXTERNAL 550 #endif // defined VG_FEATURE_FONT && \ 551 // (defined VG_FEATURE_FONT_FREETYPE_VECTOR || defined VG_FEATURE_FONT_FREETYPE_BITMAP) && \ 552 // (VG_FEATURE_FONT == VG_FEATURE_FONT_FREETYPE_VECTOR || VG_FEATURE_FONT == VG_FEATURE_FONT_FREETYPE_BITMAP) MicroEJ MicroVG library low level API: helper to implement library natives methods.
#define FT_FACE_FLAG_COMPLEX_LAYOUT
Freetype supplementary flag for complex layout Uses a free bit in freetype face flags to convey the c...
MicroEJ MicroVG library low level API: implementation over FreeType.
MicroEJ MicroVG library low level API: enable some features according to the hardware capacities...