352 lines
10 KiB
C++
352 lines
10 KiB
C++
/*************************************************************************/
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/* bitmap_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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 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 "bitmap_font_fb.h"
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Error BitmapFontDataFallback::load_from_file(const String &p_filename, int p_base_size) {
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_THREAD_SAFE_METHOD_
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//fnt format used by angelcode bmfont
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//http://www.angelcode.com/products/bmfont/
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FileAccess *f = FileAccess::open(p_filename, FileAccess::READ);
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ERR_FAIL_COND_V_MSG(!f, ERR_FILE_NOT_FOUND, "Can't open font: " + p_filename + ".");
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while (true) {
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String line = f->get_line();
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int delimiter = line.find(" ");
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String type = line.substr(0, delimiter);
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int pos = delimiter + 1;
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Map<String, String> keys;
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while (pos < line.size() && line[pos] == ' ') {
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pos++;
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}
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while (pos < line.size()) {
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int eq = line.find("=", pos);
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if (eq == -1) {
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break;
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}
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String key = line.substr(pos, eq - pos);
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int end = -1;
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String value;
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if (line[eq + 1] == '"') {
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end = line.find("\"", eq + 2);
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if (end == -1) {
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break;
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}
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value = line.substr(eq + 2, end - 1 - eq - 1);
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pos = end + 1;
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} else {
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end = line.find(" ", eq + 1);
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if (end == -1) {
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end = line.size();
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}
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value = line.substr(eq + 1, end - eq);
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pos = end;
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}
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while (pos < line.size() && line[pos] == ' ') {
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pos++;
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}
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keys[key] = value;
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}
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if (type == "info") {
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if (keys.has("size")) {
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base_size = keys["size"].to_int();
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}
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} else if (type == "common") {
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if (keys.has("lineHeight")) {
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height = keys["lineHeight"].to_int();
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}
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if (keys.has("base")) {
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ascent = keys["base"].to_int();
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}
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} else if (type == "page") {
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if (keys.has("file")) {
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String base_dir = p_filename.get_base_dir();
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String file = base_dir.plus_file(keys["file"]);
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if (RenderingServer::get_singleton() != nullptr) {
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Ref<Texture2D> tex = ResourceLoader::load(file);
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if (tex.is_null()) {
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ERR_PRINT("Can't load font texture!");
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} else {
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ERR_FAIL_COND_V_MSG(tex.is_null(), ERR_FILE_CANT_READ, "It's not a reference to a valid Texture object.");
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textures.push_back(tex);
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}
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}
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}
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} else if (type == "char") {
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Character c;
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char32_t idx = 0;
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if (keys.has("id")) {
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idx = keys["id"].to_int();
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}
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if (keys.has("x")) {
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c.rect.position.x = keys["x"].to_int();
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}
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if (keys.has("y")) {
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c.rect.position.y = keys["y"].to_int();
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}
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if (keys.has("width")) {
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c.rect.size.width = keys["width"].to_int();
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}
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if (keys.has("height")) {
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c.rect.size.height = keys["height"].to_int();
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}
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if (keys.has("xoffset")) {
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c.align.x = keys["xoffset"].to_int();
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}
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if (keys.has("yoffset")) {
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c.align.y = keys["yoffset"].to_int();
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}
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if (keys.has("page")) {
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c.texture_idx = keys["page"].to_int();
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}
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if (keys.has("xadvance")) {
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c.advance.x = keys["xadvance"].to_int();
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}
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if (keys.has("yadvance")) {
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c.advance.y = keys["yadvance"].to_int();
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}
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if (c.advance.x < 0) {
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c.advance.x = c.rect.size.width + 1;
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}
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if (c.advance.y < 0) {
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c.advance.y = c.rect.size.height + 1;
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}
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char_map[idx] = c;
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} else if (type == "kerning") {
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KerningPairKey kpk;
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float k = 0.0;
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if (keys.has("first")) {
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kpk.A = keys["first"].to_int();
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}
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if (keys.has("second")) {
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kpk.B = keys["second"].to_int();
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}
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if (keys.has("amount")) {
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k = keys["amount"].to_int();
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}
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kerning_map[kpk] = k;
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}
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if (f->eof_reached()) {
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break;
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}
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}
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if (base_size == 0) {
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base_size = height;
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}
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valid = true;
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memdelete(f);
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return OK;
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}
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Error BitmapFontDataFallback::bitmap_new(float p_height, float p_ascent, int p_base_size) {
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height = p_height;
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ascent = p_ascent;
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base_size = p_base_size;
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if (base_size == 0) {
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base_size = height;
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}
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char_map.clear();
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textures.clear();
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kerning_map.clear();
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valid = true;
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return OK;
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}
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void BitmapFontDataFallback::bitmap_add_texture(const Ref<Texture> &p_texture) {
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ERR_FAIL_COND(!valid);
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ERR_FAIL_COND_MSG(p_texture.is_null(), "It's not a reference to a valid Texture object.");
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textures.push_back(p_texture);
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}
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void BitmapFontDataFallback::bitmap_add_char(char32_t p_char, int p_texture_idx, const Rect2 &p_rect, const Size2 &p_align, float p_advance) {
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ERR_FAIL_COND(!valid);
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Character chr;
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chr.rect = p_rect;
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chr.texture_idx = p_texture_idx;
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if (p_advance < 0) {
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chr.advance.x = chr.rect.size.x;
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} else {
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chr.advance.x = p_advance;
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}
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chr.align = p_align;
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char_map[p_char] = chr;
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}
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void BitmapFontDataFallback::bitmap_add_kerning_pair(char32_t p_A, char32_t p_B, int p_kerning) {
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ERR_FAIL_COND(!valid);
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KerningPairKey kpk;
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kpk.A = p_A;
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kpk.B = p_B;
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if (p_kerning == 0 && kerning_map.has(kpk)) {
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kerning_map.erase(kpk);
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} else {
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kerning_map[kpk] = p_kerning;
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}
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}
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float BitmapFontDataFallback::get_height(int p_size) const {
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ERR_FAIL_COND_V(!valid, 0.f);
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return height * (float(p_size) / float(base_size));
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}
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float BitmapFontDataFallback::get_ascent(int p_size) const {
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ERR_FAIL_COND_V(!valid, 0.f);
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return ascent * (float(p_size) / float(base_size));
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}
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float BitmapFontDataFallback::get_descent(int p_size) const {
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ERR_FAIL_COND_V(!valid, 0.f);
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return (height - ascent) * (float(p_size) / float(base_size));
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}
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float BitmapFontDataFallback::get_underline_position(int p_size) const {
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ERR_FAIL_COND_V(!valid, 0.f);
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return 2 * (float(p_size) / float(base_size));
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}
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float BitmapFontDataFallback::get_underline_thickness(int p_size) const {
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ERR_FAIL_COND_V(!valid, 0.f);
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return 1 * (float(p_size) / float(base_size));
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}
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void BitmapFontDataFallback::set_distance_field_hint(bool p_distance_field) {
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distance_field_hint = p_distance_field;
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}
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bool BitmapFontDataFallback::get_distance_field_hint() const {
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return distance_field_hint;
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}
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float BitmapFontDataFallback::get_base_size() const {
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return base_size;
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}
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bool BitmapFontDataFallback::has_char(char32_t p_char) const {
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_THREAD_SAFE_METHOD_
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ERR_FAIL_COND_V(!valid, false);
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return char_map.has(p_char);
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}
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String BitmapFontDataFallback::get_supported_chars() const {
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_THREAD_SAFE_METHOD_
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ERR_FAIL_COND_V(!valid, String());
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String chars;
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const char32_t *k = nullptr;
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while ((k = char_map.next(k))) {
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chars += char32_t(*k);
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}
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return chars;
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}
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Vector2 BitmapFontDataFallback::get_advance(char32_t p_char, int p_size) const {
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_THREAD_SAFE_METHOD_
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ERR_FAIL_COND_V(!valid, Vector2());
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const Character *c = char_map.getptr(p_char);
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ERR_FAIL_COND_V(c == nullptr, Vector2());
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return c->advance * (float(p_size) / float(base_size));
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}
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Vector2 BitmapFontDataFallback::get_kerning(char32_t p_char, char32_t p_next, int p_size) const {
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_THREAD_SAFE_METHOD_
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ERR_FAIL_COND_V(!valid, Vector2());
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KerningPairKey kpk;
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kpk.A = p_char;
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kpk.B = p_next;
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const Map<KerningPairKey, int>::Element *E = kerning_map.find(kpk);
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if (E) {
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return Vector2(-E->get() * (float(p_size) / float(base_size)), 0);
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} else {
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return Vector2();
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}
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}
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Vector2 BitmapFontDataFallback::draw_glyph(RID p_canvas, int p_size, const Vector2 &p_pos, uint32_t p_index, const Color &p_color) const {
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_THREAD_SAFE_METHOD_
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if (p_index == 0) {
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return Vector2();
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}
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ERR_FAIL_COND_V(!valid, Vector2());
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const Character *c = char_map.getptr(p_index);
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ERR_FAIL_COND_V(c == nullptr, Vector2());
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ERR_FAIL_COND_V(c->texture_idx < -1 || c->texture_idx >= textures.size(), Vector2());
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if (c->texture_idx != -1) {
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Point2i cpos = p_pos;
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cpos += (c->align + Vector2(0, -ascent)) * (float(p_size) / float(base_size));
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Size2i csize = c->rect.size * (float(p_size) / float(base_size));
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if (RenderingServer::get_singleton() != nullptr) {
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//if (distance_field_hint) { // Not implemented.
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// RenderingServer::get_singleton()->canvas_item_set_distance_field_mode(p_canvas, true);
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//}
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RenderingServer::get_singleton()->canvas_item_add_texture_rect_region(p_canvas, Rect2(cpos, csize), textures[c->texture_idx]->get_rid(), c->rect, p_color, false, false);
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//if (distance_field_hint) {
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// RenderingServer::get_singleton()->canvas_item_set_distance_field_mode(p_canvas, false);
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//}
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}
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}
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return c->advance * (float(p_size) / float(base_size));
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}
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Vector2 BitmapFontDataFallback::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 {
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_THREAD_SAFE_METHOD_
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if (p_index == 0) {
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return Vector2();
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}
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ERR_FAIL_COND_V(!valid, Vector2());
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const Character *c = char_map.getptr(p_index);
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ERR_FAIL_COND_V(c == nullptr, Vector2());
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ERR_FAIL_COND_V(c->texture_idx < -1 || c->texture_idx >= textures.size(), Vector2());
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// Not supported, return advance for compatibility.
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return c->advance * (float(p_size) / float(base_size));
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}
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