summaryrefslogtreecommitdiff
path: root/modules/text_server_fb/dynamic_font_fb.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'modules/text_server_fb/dynamic_font_fb.cpp')
-rw-r--r--modules/text_server_fb/dynamic_font_fb.cpp731
1 files changed, 731 insertions, 0 deletions
diff --git a/modules/text_server_fb/dynamic_font_fb.cpp b/modules/text_server_fb/dynamic_font_fb.cpp
new file mode 100644
index 0000000000..6feeaec102
--- /dev/null
+++ b/modules/text_server_fb/dynamic_font_fb.cpp
@@ -0,0 +1,731 @@
+/*************************************************************************/
+/* dynamic_font_fb.cpp */
+/*************************************************************************/
+/* This file is part of: */
+/* GODOT ENGINE */
+/* https://godotengine.org */
+/*************************************************************************/
+/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
+/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
+/* */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the */
+/* "Software"), to deal in the Software without restriction, including */
+/* without limitation the rights to use, copy, modify, merge, publish, */
+/* distribute, sublicense, and/or sell copies of the Software, and to */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions: */
+/* */
+/* The above copyright notice and this permission notice shall be */
+/* included in all copies or substantial portions of the Software. */
+/* */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
+/*************************************************************************/
+
+#include "dynamic_font_fb.h"
+
+#include FT_STROKER_H
+#include FT_ADVANCES_H
+
+HashMap<String, Vector<uint8_t>> DynamicFontDataFallback::font_mem_cache;
+
+DynamicFontDataFallback::DataAtSize *DynamicFontDataFallback::get_data_for_size(int p_size, int p_outline_size) {
+ ERR_FAIL_COND_V(!valid, nullptr);
+ ERR_FAIL_COND_V(p_size < 0 || p_size > UINT16_MAX, nullptr);
+ ERR_FAIL_COND_V(p_outline_size < 0 || p_outline_size > UINT16_MAX, nullptr);
+
+ CacheID id;
+ id.size = p_size;
+ id.outline_size = p_outline_size;
+
+ DataAtSize *fds = nullptr;
+ Map<CacheID, DataAtSize *>::Element *E = nullptr;
+ if (p_outline_size != 0) {
+ E = size_cache_outline.find(id);
+ } else {
+ E = size_cache.find(id);
+ }
+
+ if (E != nullptr) {
+ fds = E->get();
+ } else {
+ // FT_OPEN_STREAM is extremely slow only on Android.
+ if (OS::get_singleton()->get_name() == "Android" && font_mem == nullptr && font_path != String()) {
+ if (font_mem_cache.has(font_path)) {
+ font_mem = font_mem_cache[font_path].ptr();
+ font_mem_size = font_mem_cache[font_path].size();
+ } else {
+ FileAccess *f = FileAccess::open(font_path, FileAccess::READ);
+ if (!f) {
+ ERR_FAIL_V_MSG(nullptr, "Cannot open font file '" + font_path + "'.");
+ }
+
+ size_t len = f->get_len();
+ font_mem_cache[font_path] = Vector<uint8_t>();
+ Vector<uint8_t> &fontdata = font_mem_cache[font_path];
+ fontdata.resize(len);
+ f->get_buffer(fontdata.ptrw(), len);
+ font_mem = fontdata.ptr();
+ font_mem_size = len;
+ f->close();
+ }
+ }
+
+ int error = 0;
+ fds = memnew(DataAtSize);
+ if (font_mem == nullptr && font_path != String()) {
+ FileAccess *f = FileAccess::open(font_path, FileAccess::READ);
+ if (!f) {
+ memdelete(fds);
+ ERR_FAIL_V_MSG(nullptr, "Cannot open font file '" + font_path + "'.");
+ }
+
+ memset(&fds->stream, 0, sizeof(FT_StreamRec));
+ fds->stream.base = nullptr;
+ fds->stream.size = f->get_len();
+ fds->stream.pos = 0;
+ fds->stream.descriptor.pointer = f;
+ fds->stream.read = _ft_stream_io;
+ fds->stream.close = _ft_stream_close;
+
+ FT_Open_Args fargs;
+ memset(&fargs, 0, sizeof(FT_Open_Args));
+ fargs.flags = FT_OPEN_STREAM;
+ fargs.stream = &fds->stream;
+ error = FT_Open_Face(library, &fargs, 0, &fds->face);
+ } else if (font_mem) {
+ memset(&fds->stream, 0, sizeof(FT_StreamRec));
+ fds->stream.base = (unsigned char *)font_mem;
+ fds->stream.size = font_mem_size;
+ fds->stream.pos = 0;
+
+ FT_Open_Args fargs;
+ memset(&fargs, 0, sizeof(FT_Open_Args));
+ fargs.memory_base = (unsigned char *)font_mem;
+ fargs.memory_size = font_mem_size;
+ fargs.flags = FT_OPEN_MEMORY;
+ fargs.stream = &fds->stream;
+ error = FT_Open_Face(library, &fargs, 0, &fds->face);
+
+ } else {
+ memdelete(fds);
+ ERR_FAIL_V_MSG(nullptr, "DynamicFont uninitialized.");
+ }
+
+ if (error == FT_Err_Unknown_File_Format) {
+ memdelete(fds);
+ ERR_FAIL_V_MSG(nullptr, "Unknown font format.");
+
+ } else if (error) {
+ memdelete(fds);
+ ERR_FAIL_V_MSG(nullptr, "Error loading font.");
+ }
+
+ oversampling = TS->font_get_oversampling();
+
+ if (FT_HAS_COLOR(fds->face) && fds->face->num_fixed_sizes > 0) {
+ int best_match = 0;
+ int diff = ABS(p_size - ((int64_t)fds->face->available_sizes[0].width));
+ fds->scale_color_font = float(p_size * oversampling) / fds->face->available_sizes[0].width;
+ for (int i = 1; i < fds->face->num_fixed_sizes; i++) {
+ int ndiff = ABS(p_size - ((int64_t)fds->face->available_sizes[i].width));
+ if (ndiff < diff) {
+ best_match = i;
+ diff = ndiff;
+ fds->scale_color_font = float(p_size * oversampling) / fds->face->available_sizes[i].width;
+ }
+ }
+ FT_Select_Size(fds->face, best_match);
+ } else {
+ FT_Set_Pixel_Sizes(fds->face, 0, p_size * oversampling);
+ }
+
+ fds->size = p_size;
+ fds->ascent = (fds->face->size->metrics.ascender / 64.0) / oversampling * fds->scale_color_font;
+ fds->descent = (-fds->face->size->metrics.descender / 64.0) / oversampling * fds->scale_color_font;
+ fds->underline_position = -fds->face->underline_position / 64.0 / oversampling * fds->scale_color_font;
+ fds->underline_thickness = fds->face->underline_thickness / 64.0 / oversampling * fds->scale_color_font;
+ if (p_outline_size != 0) {
+ size_cache_outline[id] = fds;
+ } else {
+ size_cache[id] = fds;
+ }
+ }
+
+ return fds;
+}
+
+unsigned long DynamicFontDataFallback::_ft_stream_io(FT_Stream stream, unsigned long offset, unsigned char *buffer, unsigned long count) {
+ FileAccess *f = (FileAccess *)stream->descriptor.pointer;
+
+ if (f->get_position() != offset) {
+ f->seek(offset);
+ }
+ if (count == 0) {
+ return 0;
+ }
+
+ return f->get_buffer(buffer, count);
+}
+
+void DynamicFontDataFallback::_ft_stream_close(FT_Stream stream) {
+ FileAccess *f = (FileAccess *)stream->descriptor.pointer;
+ f->close();
+ memdelete(f);
+}
+
+DynamicFontDataFallback::TexturePosition DynamicFontDataFallback::find_texture_pos_for_glyph(DynamicFontDataFallback::DataAtSize *p_data, int p_color_size, Image::Format p_image_format, int p_width, int p_height) {
+ TexturePosition ret;
+ ret.index = -1;
+ ret.x = 0;
+ ret.y = 0;
+
+ int mw = p_width;
+ int mh = p_height;
+
+ for (int i = 0; i < p_data->textures.size(); i++) {
+ const CharTexture &ct = p_data->textures[i];
+
+ if (RenderingServer::get_singleton() != nullptr) {
+ if (ct.texture->get_format() != p_image_format) {
+ continue;
+ }
+ }
+
+ if (mw > ct.texture_size || mh > ct.texture_size) { //too big for this texture
+ continue;
+ }
+
+ ret.y = 0x7FFFFFFF;
+ ret.x = 0;
+
+ for (int j = 0; j < ct.texture_size - mw; j++) {
+ int max_y = 0;
+
+ for (int k = j; k < j + mw; k++) {
+ int y = ct.offsets[k];
+ if (y > max_y) {
+ max_y = y;
+ }
+ }
+
+ if (max_y < ret.y) {
+ ret.y = max_y;
+ ret.x = j;
+ }
+ }
+
+ if (ret.y == 0x7FFFFFFF || ret.y + mh > ct.texture_size) {
+ continue; //fail, could not fit it here
+ }
+
+ ret.index = i;
+ break;
+ }
+
+ if (ret.index == -1) {
+ //could not find texture to fit, create one
+ ret.x = 0;
+ ret.y = 0;
+
+ int texsize = MAX(p_data->size * oversampling * 8, 256);
+ if (mw > texsize) {
+ texsize = mw; //special case, adapt to it?
+ }
+ if (mh > texsize) {
+ texsize = mh; //special case, adapt to it?
+ }
+
+ texsize = next_power_of_2(texsize);
+
+ texsize = MIN(texsize, 4096);
+
+ CharTexture tex;
+ tex.texture_size = texsize;
+ tex.imgdata.resize(texsize * texsize * p_color_size); //grayscale alpha
+
+ {
+ //zero texture
+ uint8_t *w = tex.imgdata.ptrw();
+ ERR_FAIL_COND_V(texsize * texsize * p_color_size > tex.imgdata.size(), ret);
+ // Initialize the texture to all-white pixels to prevent artifacts when the
+ // font is displayed at a non-default scale with filtering enabled.
+ if (p_color_size == 2) {
+ for (int i = 0; i < texsize * texsize * p_color_size; i += 2) { // FORMAT_LA8
+ w[i + 0] = 255;
+ w[i + 1] = 0;
+ }
+ } else if (p_color_size == 4) {
+ for (int i = 0; i < texsize * texsize * p_color_size; i += 4) { // FORMAT_RGBA8
+ w[i + 0] = 255;
+ w[i + 1] = 255;
+ w[i + 2] = 255;
+ w[i + 3] = 0;
+ }
+ } else {
+ ERR_FAIL_V(ret);
+ }
+ }
+ tex.offsets.resize(texsize);
+ for (int i = 0; i < texsize; i++) { //zero offsets
+ tex.offsets.write[i] = 0;
+ }
+
+ p_data->textures.push_back(tex);
+ ret.index = p_data->textures.size() - 1;
+ }
+
+ return ret;
+}
+
+DynamicFontDataFallback::Character DynamicFontDataFallback::Character::not_found() {
+ Character ch;
+ return ch;
+}
+
+DynamicFontDataFallback::Character DynamicFontDataFallback::bitmap_to_character(DynamicFontDataFallback::DataAtSize *p_data, FT_Bitmap bitmap, int yofs, int xofs, const Vector2 &advance) {
+ int w = bitmap.width;
+ int h = bitmap.rows;
+
+ int mw = w + rect_margin * 2;
+ int mh = h + rect_margin * 2;
+
+ ERR_FAIL_COND_V(mw > 4096, Character::not_found());
+ ERR_FAIL_COND_V(mh > 4096, Character::not_found());
+
+ int color_size = bitmap.pixel_mode == FT_PIXEL_MODE_BGRA ? 4 : 2;
+ Image::Format require_format = color_size == 4 ? Image::FORMAT_RGBA8 : Image::FORMAT_LA8;
+
+ TexturePosition tex_pos = find_texture_pos_for_glyph(p_data, color_size, require_format, mw, mh);
+ ERR_FAIL_COND_V(tex_pos.index < 0, Character::not_found());
+
+ //fit character in char texture
+
+ CharTexture &tex = p_data->textures.write[tex_pos.index];
+
+ {
+ uint8_t *wr = tex.imgdata.ptrw();
+
+ for (int i = 0; i < h; i++) {
+ for (int j = 0; j < w; j++) {
+ int ofs = ((i + tex_pos.y + rect_margin) * tex.texture_size + j + tex_pos.x + rect_margin) * color_size;
+ ERR_FAIL_COND_V(ofs >= tex.imgdata.size(), Character::not_found());
+ switch (bitmap.pixel_mode) {
+ case FT_PIXEL_MODE_MONO: {
+ int byte = i * bitmap.pitch + (j >> 3);
+ int bit = 1 << (7 - (j % 8));
+ wr[ofs + 0] = 255; //grayscale as 1
+ wr[ofs + 1] = (bitmap.buffer[byte] & bit) ? 255 : 0;
+ } break;
+ case FT_PIXEL_MODE_GRAY:
+ wr[ofs + 0] = 255; //grayscale as 1
+ wr[ofs + 1] = bitmap.buffer[i * bitmap.pitch + j];
+ break;
+ case FT_PIXEL_MODE_BGRA: {
+ int ofs_color = i * bitmap.pitch + (j << 2);
+ wr[ofs + 2] = bitmap.buffer[ofs_color + 0];
+ wr[ofs + 1] = bitmap.buffer[ofs_color + 1];
+ wr[ofs + 0] = bitmap.buffer[ofs_color + 2];
+ wr[ofs + 3] = bitmap.buffer[ofs_color + 3];
+ } break;
+ // TODO: FT_PIXEL_MODE_LCD
+ default:
+ ERR_FAIL_V_MSG(Character::not_found(), "Font uses unsupported pixel format: " + itos(bitmap.pixel_mode) + ".");
+ break;
+ }
+ }
+ }
+ }
+
+ //blit to image and texture
+ {
+ if (RenderingServer::get_singleton() != nullptr) {
+ Ref<Image> img = memnew(Image(tex.texture_size, tex.texture_size, 0, require_format, tex.imgdata));
+
+ if (tex.texture.is_null()) {
+ tex.texture.instance();
+ tex.texture->create_from_image(img);
+ } else {
+ tex.texture->update(img); //update
+ }
+ }
+ }
+
+ // update height array
+ for (int k = tex_pos.x; k < tex_pos.x + mw; k++) {
+ tex.offsets.write[k] = tex_pos.y + mh;
+ }
+
+ Character chr;
+ chr.align = Vector2(xofs, -yofs) * p_data->scale_color_font / oversampling;
+ chr.advance = advance * p_data->scale_color_font / oversampling;
+ chr.texture_idx = tex_pos.index;
+ chr.found = true;
+
+ chr.rect_uv = Rect2(tex_pos.x + rect_margin, tex_pos.y + rect_margin, w, h);
+ chr.rect = chr.rect_uv;
+ chr.rect.position /= oversampling;
+ chr.rect.size *= (p_data->scale_color_font / oversampling);
+ return chr;
+}
+
+void DynamicFontDataFallback::update_char(int p_size, char32_t p_char) {
+ DataAtSize *fds = get_data_for_size(p_size, false);
+ ERR_FAIL_COND(fds == nullptr);
+
+ if (fds->char_map.has(p_char)) {
+ return;
+ }
+
+ Character character = Character::not_found();
+
+ FT_GlyphSlot slot = fds->face->glyph;
+ FT_UInt gl_index = FT_Get_Char_Index(fds->face, p_char);
+
+ if (gl_index == 0) {
+ fds->char_map[p_char] = character;
+ return;
+ }
+
+ int ft_hinting;
+ switch (hinting) {
+ case TextServer::HINTING_NONE:
+ ft_hinting = FT_LOAD_NO_HINTING;
+ break;
+ case TextServer::HINTING_LIGHT:
+ ft_hinting = FT_LOAD_TARGET_LIGHT;
+ break;
+ default:
+ ft_hinting = FT_LOAD_TARGET_NORMAL;
+ break;
+ }
+
+ FT_Fixed v, h;
+ FT_Get_Advance(fds->face, gl_index, FT_HAS_COLOR(fds->face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0) | ft_hinting, &h);
+ FT_Get_Advance(fds->face, gl_index, FT_HAS_COLOR(fds->face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0) | ft_hinting | FT_LOAD_VERTICAL_LAYOUT, &v);
+
+ int error = FT_Load_Glyph(fds->face, gl_index, FT_HAS_COLOR(fds->face) ? FT_LOAD_COLOR : FT_LOAD_DEFAULT | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0) | ft_hinting);
+ if (error) {
+ fds->char_map[p_char] = character;
+ return;
+ }
+
+ error = FT_Render_Glyph(fds->face->glyph, antialiased ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO);
+ if (!error) {
+ character = bitmap_to_character(fds, slot->bitmap, slot->bitmap_top, slot->bitmap_left, Vector2((h + (1 << 9)) >> 10, (v + (1 << 9)) >> 10) / 64.0);
+ }
+
+ fds->char_map[p_char] = character;
+}
+
+void DynamicFontDataFallback::update_char_outline(int p_size, int p_outline_size, char32_t p_char) {
+ DataAtSize *fds = get_data_for_size(p_size, p_outline_size);
+ ERR_FAIL_COND(fds == nullptr);
+
+ if (fds->char_map.has(p_char)) {
+ return;
+ }
+
+ Character character = Character::not_found();
+ FT_UInt gl_index = FT_Get_Char_Index(fds->face, p_char);
+
+ if (gl_index == 0) {
+ fds->char_map[p_char] = character;
+ return;
+ }
+
+ int error = FT_Load_Glyph(fds->face, gl_index, FT_LOAD_NO_BITMAP | (force_autohinter ? FT_LOAD_FORCE_AUTOHINT : 0));
+ if (error) {
+ fds->char_map[p_char] = character;
+ return;
+ }
+
+ FT_Stroker stroker;
+ if (FT_Stroker_New(library, &stroker) != 0) {
+ fds->char_map[p_char] = character;
+ return;
+ }
+
+ FT_Stroker_Set(stroker, (int)(p_outline_size * oversampling * 64.0), FT_STROKER_LINECAP_BUTT, FT_STROKER_LINEJOIN_ROUND, 0);
+ FT_Glyph glyph;
+ FT_BitmapGlyph glyph_bitmap;
+
+ if (FT_Get_Glyph(fds->face->glyph, &glyph) != 0) {
+ goto cleanup_stroker;
+ }
+ if (FT_Glyph_Stroke(&glyph, stroker, 1) != 0) {
+ goto cleanup_glyph;
+ }
+ if (FT_Glyph_To_Bitmap(&glyph, antialiased ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO, nullptr, 1) != 0) {
+ goto cleanup_glyph;
+ }
+
+ glyph_bitmap = (FT_BitmapGlyph)glyph;
+ character = bitmap_to_character(fds, glyph_bitmap->bitmap, glyph_bitmap->top, glyph_bitmap->left, Vector2());
+
+cleanup_glyph:
+ FT_Done_Glyph(glyph);
+cleanup_stroker:
+ FT_Stroker_Done(stroker);
+
+ fds->char_map[p_char] = character;
+}
+
+void DynamicFontDataFallback::clear_cache() {
+ _THREAD_SAFE_METHOD_
+ for (Map<CacheID, DataAtSize *>::Element *E = size_cache.front(); E; E = E->next()) {
+ memdelete(E->get());
+ }
+ size_cache.clear();
+ for (Map<CacheID, DataAtSize *>::Element *E = size_cache_outline.front(); E; E = E->next()) {
+ memdelete(E->get());
+ }
+ size_cache_outline.clear();
+}
+
+Error DynamicFontDataFallback::load_from_file(const String &p_filename, int p_base_size) {
+ _THREAD_SAFE_METHOD_
+ if (library == nullptr) {
+ int error = FT_Init_FreeType(&library);
+ ERR_FAIL_COND_V_MSG(error != 0, ERR_CANT_CREATE, "Error initializing FreeType.");
+ }
+ clear_cache();
+
+ font_path = p_filename;
+ base_size = p_base_size;
+
+ valid = true;
+ DataAtSize *fds = get_data_for_size(base_size); // load base size.
+ if (fds == nullptr) {
+ valid = false;
+ ERR_FAIL_V(ERR_CANT_CREATE);
+ }
+
+ return OK;
+}
+
+Error DynamicFontDataFallback::load_from_memory(const uint8_t *p_data, size_t p_size, int p_base_size) {
+ _THREAD_SAFE_METHOD_
+ if (library == nullptr) {
+ int error = FT_Init_FreeType(&library);
+ ERR_FAIL_COND_V_MSG(error != 0, ERR_CANT_CREATE, "Error initializing FreeType.");
+ }
+ clear_cache();
+
+ font_mem = p_data;
+ font_mem_size = p_size;
+ base_size = p_base_size;
+
+ valid = true;
+ DataAtSize *fds = get_data_for_size(base_size); // load base size.
+ if (fds == nullptr) {
+ valid = false;
+ ERR_FAIL_V(ERR_CANT_CREATE);
+ }
+
+ return OK;
+}
+
+float DynamicFontDataFallback::get_height(int p_size) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, 0.f);
+ return fds->ascent + fds->descent;
+}
+
+float DynamicFontDataFallback::get_ascent(int p_size) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, 0.f);
+ return fds->ascent;
+}
+
+float DynamicFontDataFallback::get_descent(int p_size) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, 0.f);
+ return fds->descent;
+}
+
+float DynamicFontDataFallback::get_underline_position(int p_size) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, 0.f);
+ return fds->underline_position;
+}
+
+float DynamicFontDataFallback::get_underline_thickness(int p_size) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, 0.f);
+ return fds->underline_thickness;
+}
+
+void DynamicFontDataFallback::set_antialiased(bool p_antialiased) {
+ if (antialiased != p_antialiased) {
+ clear_cache();
+ antialiased = p_antialiased;
+ }
+}
+
+bool DynamicFontDataFallback::get_antialiased() const {
+ return antialiased;
+}
+
+void DynamicFontDataFallback::set_force_autohinter(bool p_enabled) {
+ if (force_autohinter != p_enabled) {
+ clear_cache();
+ force_autohinter = p_enabled;
+ }
+}
+
+bool DynamicFontDataFallback::get_force_autohinter() const {
+ return force_autohinter;
+}
+
+void DynamicFontDataFallback::set_hinting(TextServer::Hinting p_hinting) {
+ if (hinting != p_hinting) {
+ clear_cache();
+ hinting = p_hinting;
+ }
+}
+
+TextServer::Hinting DynamicFontDataFallback::get_hinting() const {
+ return hinting;
+}
+
+bool DynamicFontDataFallback::has_outline() const {
+ return true;
+}
+
+float DynamicFontDataFallback::get_base_size() const {
+ return base_size;
+}
+
+bool DynamicFontDataFallback::has_char(char32_t p_char) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(base_size);
+ ERR_FAIL_COND_V(fds == nullptr, false);
+
+ const_cast<DynamicFontDataFallback *>(this)->update_char(base_size, p_char);
+ Character ch = fds->char_map[p_char];
+
+ return (ch.found);
+}
+
+String DynamicFontDataFallback::get_supported_chars() const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(base_size);
+ ERR_FAIL_COND_V(fds == nullptr, String());
+
+ String chars;
+
+ FT_UInt gindex;
+ FT_ULong charcode = FT_Get_First_Char(fds->face, &gindex);
+ while (gindex != 0) {
+ if (charcode != 0) {
+ chars += char32_t(charcode);
+ }
+ charcode = FT_Get_Next_Char(fds->face, charcode, &gindex);
+ }
+
+ return chars;
+}
+
+Vector2 DynamicFontDataFallback::get_advance(char32_t p_char, int p_size) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, Vector2());
+
+ const_cast<DynamicFontDataFallback *>(this)->update_char(p_size, p_char);
+ Character ch = fds->char_map[p_char];
+
+ return ch.advance;
+}
+
+Vector2 DynamicFontDataFallback::get_kerning(char32_t p_char, char32_t p_next, int p_size) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, Vector2());
+
+ FT_Vector delta;
+ FT_Get_Kerning(fds->face, FT_Get_Char_Index(fds->face, p_char), FT_Get_Char_Index(fds->face, p_next), FT_KERNING_DEFAULT, &delta);
+ return Vector2(delta.x, delta.y);
+}
+
+Vector2 DynamicFontDataFallback::draw_glyph(RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size);
+ ERR_FAIL_COND_V(fds == nullptr, Vector2());
+
+ const_cast<DynamicFontDataFallback *>(this)->update_char(p_size, p_index);
+ Character ch = fds->char_map[p_index];
+
+ Vector2 advance;
+ if (ch.found) {
+ ERR_FAIL_COND_V(ch.texture_idx < -1 || ch.texture_idx >= fds->textures.size(), Vector2());
+
+ if (ch.texture_idx != -1) {
+ Point2 cpos = p_pos;
+ cpos += ch.align;
+
+ Color modulate = p_color;
+ if (FT_HAS_COLOR(fds->face)) {
+ modulate.r = modulate.g = modulate.b = 1.0;
+ }
+ if (RenderingServer::get_singleton() != nullptr) {
+ RID texture = fds->textures[ch.texture_idx].texture->get_rid();
+ RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas, Rect2(cpos, ch.rect.size), texture, ch.rect_uv, modulate, false, false);
+ }
+ }
+
+ advance = ch.advance;
+ }
+
+ return advance;
+}
+
+Vector2 DynamicFontDataFallback::draw_glyph_outline(RID p_canvas, int p_size, int p_outline_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const {
+ _THREAD_SAFE_METHOD_
+ DataAtSize *fds = const_cast<DynamicFontDataFallback *>(this)->get_data_for_size(p_size, p_outline_size);
+ ERR_FAIL_COND_V(fds == nullptr, Vector2());
+
+ const_cast<DynamicFontDataFallback *>(this)->update_char_outline(p_size, p_outline_size, p_index);
+ Character ch = fds->char_map[p_index];
+
+ Vector2 advance;
+ if (ch.found) {
+ ERR_FAIL_COND_V(ch.texture_idx < -1 || ch.texture_idx >= fds->textures.size(), Vector2());
+
+ if (ch.texture_idx != -1) {
+ Point2 cpos = p_pos;
+ cpos += ch.align;
+
+ Color modulate = p_color;
+ if (FT_HAS_COLOR(fds->face)) {
+ modulate.r = modulate.g = modulate.b = 1.0;
+ }
+ if (RenderingServer::get_singleton() != nullptr) {
+ RID texture = fds->textures[ch.texture_idx].texture->get_rid();
+ RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas, Rect2(cpos, ch.rect.size), texture, ch.rect_uv, modulate, false, false);
+ }
+ }
+
+ advance = ch.advance;
+ }
+
+ return advance;
+}
+
+DynamicFontDataFallback::~DynamicFontDataFallback() {
+ clear_cache();
+ if (library != nullptr) {
+ FT_Done_FreeType(library);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-29 09:16:26 +0000