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[Complex Text Layouts] Implement TextServer interface. Implement Fallback TextServer.
This commit is contained in:
bruvzg
731
modules/text_server_fb/dynamic_font_fb.cpp
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731
modules/text_server_fb/dynamic_font_fb.cpp
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/*************************************************************************/
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/* dynamic_font_fb.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "dynamic_font_fb.h"
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#include FT_STROKER_H
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#include FT_ADVANCES_H
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HashMap<String, Vector<uint8_t>> DynamicFontDataFallback::font_mem_cache;
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DynamicFontDataFallback::DataAtSize *DynamicFontDataFallback::get_data_for_size(int p_size, int p_outline_size) {
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ERR_FAIL_COND_V(!valid, nullptr);
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ERR_FAIL_COND_V(p_size < 0 || p_size > UINT16_MAX, nullptr);
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ERR_FAIL_COND_V(p_outline_size < 0 || p_outline_size > UINT16_MAX, nullptr);
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CacheID id;
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id.size = p_size;
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id.outline_size = p_outline_size;
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DataAtSize *fds = nullptr;
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Map<CacheID, DataAtSize *>::Element *E = nullptr;
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if (p_outline_size != 0) {
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E = size_cache_outline.find(id);
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} else {
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E = size_cache.find(id);
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}
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if (E != nullptr) {
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fds = E->get();
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} else {
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// FT_OPEN_STREAM is extremely slow only on Android.
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if (OS::get_singleton()->get_name() == "Android" && font_mem == nullptr && font_path != String()) {
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if (font_mem_cache.has(font_path)) {
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font_mem = font_mem_cache[font_path].ptr();
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font_mem_size = font_mem_cache[font_path].size();
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} else {
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FileAccess *f = FileAccess::open(font_path, FileAccess::READ);
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if (!f) {
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ERR_FAIL_V_MSG(nullptr, "Cannot open font file '" + font_path + "'.");
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}
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size_t len = f->get_len();
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font_mem_cache[font_path] = Vector<uint8_t>();
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Vector<uint8_t> &fontdata = font_mem_cache[font_path];
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fontdata.resize(len);
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f->get_buffer(fontdata.ptrw(), len);
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font_mem = fontdata.ptr();
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font_mem_size = len;
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f->close();
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}
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}
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int error = 0;
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fds = memnew(DataAtSize);
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if (font_mem == nullptr && font_path != String()) {
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FileAccess *f = FileAccess::open(font_path, FileAccess::READ);
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if (!f) {
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memdelete(fds);
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ERR_FAIL_V_MSG(nullptr, "Cannot open font file '" + font_path + "'.");
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}
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memset(&fds->stream, 0, sizeof(FT_StreamRec));
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fds->stream.base = nullptr;
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fds->stream.size = f->get_len();
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fds->stream.pos = 0;
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fds->stream.descriptor.pointer = f;
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fds->stream.read = _ft_stream_io;
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fds->stream.close = _ft_stream_close;
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FT_Open_Args fargs;
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memset(&fargs, 0, sizeof(FT_Open_Args));
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fargs.flags = FT_OPEN_STREAM;
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fargs.stream = &fds->stream;
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error = FT_Open_Face(library, &fargs, 0, &fds->face);
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} else if (font_mem) {
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memset(&fds->stream, 0, sizeof(FT_StreamRec));
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fds->stream.base = (unsigned char *)font_mem;
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fds->stream.size = font_mem_size;
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fds->stream.pos = 0;
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FT_Open_Args fargs;
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memset(&fargs, 0, sizeof(FT_Open_Args));
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fargs.memory_base = (unsigned char *)font_mem;
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fargs.memory_size = font_mem_size;
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fargs.flags = FT_OPEN_MEMORY;
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fargs.stream = &fds->stream;
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error = FT_Open_Face(library, &fargs, 0, &fds->face);
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} else {
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memdelete(fds);
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ERR_FAIL_V_MSG(nullptr, "DynamicFont uninitialized.");
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}
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if (error == FT_Err_Unknown_File_Format) {
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memdelete(fds);
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ERR_FAIL_V_MSG(nullptr, "Unknown font format.");
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} else if (error) {
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memdelete(fds);
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ERR_FAIL_V_MSG(nullptr, "Error loading font.");
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}
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oversampling = TS->font_get_oversampling();
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if (FT_HAS_COLOR(fds->face) && fds->face->num_fixed_sizes > 0) {
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int best_match = 0;
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int diff = ABS(p_size - ((int64_t)fds->face->available_sizes[0].width));
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fds->scale_color_font = float(p_size * oversampling) / fds->face->available_sizes[0].width;
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for (int i = 1; i < fds->face->num_fixed_sizes; i++) {
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int ndiff = ABS(p_size - ((int64_t)fds->face->available_sizes[i].width));
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if (ndiff < diff) {
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best_match = i;
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diff = ndiff;
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fds->scale_color_font = float(p_size * oversampling) / fds->face->available_sizes[i].width;
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}
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}
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FT_Select_Size(fds->face, best_match);
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} else {
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FT_Set_Pixel_Sizes(fds->face, 0, p_size * oversampling);
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}
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fds->size = p_size;
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fds->ascent = (fds->face->size->metrics.ascender / 64.0) / oversampling * fds->scale_color_font;
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fds->descent = (-fds->face->size->metrics.descender / 64.0) / oversampling * fds->scale_color_font;
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fds->underline_position = -fds->face->underline_position / 64.0 / oversampling * fds->scale_color_font;
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fds->underline_thickness = fds->face->underline_thickness / 64.0 / oversampling * fds->scale_color_font;
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if (p_outline_size != 0) {
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size_cache_outline[id] = fds;
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} else {
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size_cache[id] = fds;
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}
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}
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return fds;
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}
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unsigned long DynamicFontDataFallback::_ft_stream_io(FT_Stream stream, unsigned long offset, unsigned char *buffer, unsigned long count) {
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FileAccess *f = (FileAccess *)stream->descriptor.pointer;
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if (f->get_position() != offset) {
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f->seek(offset);
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}
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if (count == 0) {
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return 0;
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}
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return f->get_buffer(buffer, count);
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}
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void DynamicFontDataFallback::_ft_stream_close(FT_Stream stream) {
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FileAccess *f = (FileAccess *)stream->descriptor.pointer;
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f->close();
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memdelete(f);
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}
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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) {
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TexturePosition ret;
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ret.index = -1;
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ret.x = 0;
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ret.y = 0;
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int mw = p_width;
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int mh = p_height;
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for (int i = 0; i < p_data->textures.size(); i++) {
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const CharTexture &ct = p_data->textures[i];
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if (RenderingServer::get_singleton() != nullptr) {
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if (ct.texture->get_format() != p_image_format) {
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continue;
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}
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}
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if (mw > ct.texture_size || mh > ct.texture_size) { //too big for this texture
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continue;
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}
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ret.y = 0x7FFFFFFF;
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ret.x = 0;
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for (int j = 0; j < ct.texture_size - mw; j++) {
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int max_y = 0;
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for (int k = j; k < j + mw; k++) {
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int y = ct.offsets[k];
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if (y > max_y) {
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max_y = y;
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}
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}
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if (max_y < ret.y) {
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ret.y = max_y;
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ret.x = j;
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}
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}
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if (ret.y == 0x7FFFFFFF || ret.y + mh > ct.texture_size) {
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continue; //fail, could not fit it here
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}
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ret.index = i;
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break;
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}
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if (ret.index == -1) {
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//could not find texture to fit, create one
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ret.x = 0;
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ret.y = 0;
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int texsize = MAX(p_data->size * oversampling * 8, 256);
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if (mw > texsize) {
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texsize = mw; //special case, adapt to it?
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}
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if (mh > texsize) {
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texsize = mh; //special case, adapt to it?
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}
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texsize = next_power_of_2(texsize);
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texsize = MIN(texsize, 4096);
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CharTexture tex;
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tex.texture_size = texsize;
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tex.imgdata.resize(texsize * texsize * p_color_size); //grayscale alpha
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{
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//zero texture
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uint8_t *w = tex.imgdata.ptrw();
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ERR_FAIL_COND_V(texsize * texsize * p_color_size > tex.imgdata.size(), ret);
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// Initialize the texture to all-white pixels to prevent artifacts when the
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// font is displayed at a non-default scale with filtering enabled.
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if (p_color_size == 2) {
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for (int i = 0; i < texsize * texsize * p_color_size; i += 2) { // FORMAT_LA8
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w[i + 0] = 255;
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w[i + 1] = 0;
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}
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} else if (p_color_size == 4) {
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for (int i = 0; i < texsize * texsize * p_color_size; i += 4) { // FORMAT_RGBA8
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w[i + 0] = 255;
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w[i + 1] = 255;
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w[i + 2] = 255;
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w[i + 3] = 0;
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}
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} else {
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ERR_FAIL_V(ret);
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}
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}
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tex.offsets.resize(texsize);
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for (int i = 0; i < texsize; i++) { //zero offsets
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tex.offsets.write[i] = 0;
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}
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p_data->textures.push_back(tex);
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ret.index = p_data->textures.size() - 1;
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}
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return ret;
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}
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DynamicFontDataFallback::Character DynamicFontDataFallback::Character::not_found() {
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Character ch;
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return ch;
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}
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DynamicFontDataFallback::Character DynamicFontDataFallback::bitmap_to_character(DynamicFontDataFallback::DataAtSize *p_data, FT_Bitmap bitmap, int yofs, int xofs, const Vector2 &advance) {
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int w = bitmap.width;
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int h = bitmap.rows;
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int mw = w + rect_margin * 2;
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int mh = h + rect_margin * 2;
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ERR_FAIL_COND_V(mw > 4096, Character::not_found());
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ERR_FAIL_COND_V(mh > 4096, Character::not_found());
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int color_size = bitmap.pixel_mode == FT_PIXEL_MODE_BGRA ? 4 : 2;
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Image::Format require_format = color_size == 4 ? Image::FORMAT_RGBA8 : Image::FORMAT_LA8;
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TexturePosition tex_pos = find_texture_pos_for_glyph(p_data, color_size, require_format, mw, mh);
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ERR_FAIL_COND_V(tex_pos.index < 0, Character::not_found());
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//fit character in char texture
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CharTexture &tex = p_data->textures.write[tex_pos.index];
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{
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uint8_t *wr = tex.imgdata.ptrw();
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for (int i = 0; i < h; i++) {
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for (int j = 0; j < w; j++) {
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int ofs = ((i + tex_pos.y + rect_margin) * tex.texture_size + j + tex_pos.x + rect_margin) * color_size;
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ERR_FAIL_COND_V(ofs >= tex.imgdata.size(), Character::not_found());
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switch (bitmap.pixel_mode) {
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case FT_PIXEL_MODE_MONO: {
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int byte = i * bitmap.pitch + (j >> 3);
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int bit = 1 << (7 - (j % 8));
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wr[ofs + 0] = 255; //grayscale as 1
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wr[ofs + 1] = (bitmap.buffer[byte] & bit) ? 255 : 0;
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} break;
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case FT_PIXEL_MODE_GRAY:
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wr[ofs + 0] = 255; //grayscale as 1
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wr[ofs + 1] = bitmap.buffer[i * bitmap.pitch + j];
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break;
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case FT_PIXEL_MODE_BGRA: {
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int ofs_color = i * bitmap.pitch + (j << 2);
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wr[ofs + 2] = bitmap.buffer[ofs_color + 0];
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wr[ofs + 1] = bitmap.buffer[ofs_color + 1];
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wr[ofs + 0] = bitmap.buffer[ofs_color + 2];
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wr[ofs + 3] = bitmap.buffer[ofs_color + 3];
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} break;
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// TODO: FT_PIXEL_MODE_LCD
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default:
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ERR_FAIL_V_MSG(Character::not_found(), "Font uses unsupported pixel format: " + itos(bitmap.pixel_mode) + ".");
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break;
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}
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}
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}
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}
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//blit to image and texture
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{
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if (RenderingServer::get_singleton() != nullptr) {
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Ref<Image> img = memnew(Image(tex.texture_size, tex.texture_size, 0, require_format, tex.imgdata));
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if (tex.texture.is_null()) {
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tex.texture.instance();
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tex.texture->create_from_image(img);
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} else {
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tex.texture->update(img); //update
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}
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}
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}
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// update height array
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for (int k = tex_pos.x; k < tex_pos.x + mw; k++) {
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tex.offsets.write[k] = tex_pos.y + mh;
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}
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Character chr;
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chr.align = Vector2(xofs, -yofs) * p_data->scale_color_font / oversampling;
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chr.advance = advance * p_data->scale_color_font / oversampling;
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chr.texture_idx = tex_pos.index;
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chr.found = true;
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chr.rect_uv = Rect2(tex_pos.x + rect_margin, tex_pos.y + rect_margin, w, h);
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chr.rect = chr.rect_uv;
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chr.rect.position /= oversampling;
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chr.rect.size *= (p_data->scale_color_font / oversampling);
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return chr;
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}
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void DynamicFontDataFallback::update_char(int p_size, char32_t p_char) {
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DataAtSize *fds = get_data_for_size(p_size, false);
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ERR_FAIL_COND(fds == nullptr);
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if (fds->char_map.has(p_char)) {
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return;
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}
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Character character = Character::not_found();
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FT_GlyphSlot slot = fds->face->glyph;
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FT_UInt gl_index = FT_Get_Char_Index(fds->face, p_char);
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if (gl_index == 0) {
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fds->char_map[p_char] = character;
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return;
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}
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int ft_hinting;
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switch (hinting) {
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case TextServer::HINTING_NONE:
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ft_hinting = FT_LOAD_NO_HINTING;
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break;
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case TextServer::HINTING_LIGHT:
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ft_hinting = FT_LOAD_TARGET_LIGHT;
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break;
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default:
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ft_hinting = FT_LOAD_TARGET_NORMAL;
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break;
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}
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FT_Fixed v, h;
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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);
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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);
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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);
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if (error) {
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fds->char_map[p_char] = character;
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return;
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}
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error = FT_Render_Glyph(fds->face->glyph, antialiased ? FT_RENDER_MODE_NORMAL : FT_RENDER_MODE_MONO);
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if (!error) {
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character = bitmap_to_character(fds, slot->bitmap, slot->bitmap_top, slot->bitmap_left, Vector2((h + (1 << 9)) >> 10, (v + (1 << 9)) >> 10) / 64.0);
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}
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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);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user