315 lines
12 KiB
C++
315 lines
12 KiB
C++
/**************************************************************************/
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/* resource_importer_imagefont.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) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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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 "resource_importer_imagefont.h"
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#include "core/io/image_loader.h"
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#include "core/io/resource_saver.h"
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String ResourceImporterImageFont::get_importer_name() const {
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return "font_data_image";
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}
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String ResourceImporterImageFont::get_visible_name() const {
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return "Font Data (Monospace Image Font)";
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}
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void ResourceImporterImageFont::get_recognized_extensions(List<String> *p_extensions) const {
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if (p_extensions) {
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ImageLoader::get_recognized_extensions(p_extensions);
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}
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}
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String ResourceImporterImageFont::get_save_extension() const {
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return "fontdata";
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}
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String ResourceImporterImageFont::get_resource_type() const {
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return "FontFile";
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}
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bool ResourceImporterImageFont::get_option_visibility(const String &p_path, const String &p_option, const HashMap<StringName, Variant> &p_options) const {
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return true;
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}
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void ResourceImporterImageFont::get_import_options(const String &p_path, List<ImportOption> *r_options, int p_preset) const {
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r_options->push_back(ImportOption(PropertyInfo(Variant::PACKED_STRING_ARRAY, "character_ranges"), Vector<String>()));
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r_options->push_back(ImportOption(PropertyInfo(Variant::PACKED_STRING_ARRAY, "kerning_pairs"), Vector<String>()));
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r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "columns"), 1));
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r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "rows"), 1));
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r_options->push_back(ImportOption(PropertyInfo(Variant::RECT2I, "image_margin"), Rect2i()));
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r_options->push_back(ImportOption(PropertyInfo(Variant::RECT2I, "character_margin"), Rect2i()));
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r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "ascent"), 0));
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r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "descent"), 0));
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r_options->push_back(ImportOption(PropertyInfo(Variant::ARRAY, "fallbacks", PROPERTY_HINT_ARRAY_TYPE, MAKE_RESOURCE_TYPE_HINT("Font")), Array()));
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r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "compress"), true));
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r_options->push_back(ImportOption(PropertyInfo(Variant::INT, "scaling_mode", PROPERTY_HINT_ENUM, "Disabled,Enabled (Integer),Enabled (Fractional)"), TextServer::FIXED_SIZE_SCALE_ENABLED));
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}
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Error ResourceImporterImageFont::import(const String &p_source_file, const String &p_save_path, const HashMap<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
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print_verbose("Importing image font from: " + p_source_file);
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int columns = p_options["columns"];
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int rows = p_options["rows"];
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int ascent = p_options["ascent"];
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int descent = p_options["descent"];
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Vector<String> ranges = p_options["character_ranges"];
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Vector<String> kern = p_options["kerning_pairs"];
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Array fallbacks = p_options["fallbacks"];
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Rect2i img_margin = p_options["image_margin"];
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Rect2i char_margin = p_options["character_margin"];
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TextServer::FixedSizeScaleMode smode = (TextServer::FixedSizeScaleMode)p_options["scaling_mode"].operator int();
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Ref<Image> img;
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img.instantiate();
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Error err = ImageLoader::load_image(p_source_file, img);
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ERR_FAIL_COND_V_MSG(err != OK, ERR_FILE_CANT_READ, vformat("Can't load font texture: \"%s\".", p_source_file));
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int count = columns * rows;
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int chr_cell_width = (img->get_width() - img_margin.position.x - img_margin.size.x) / columns;
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int chr_cell_height = (img->get_height() - img_margin.position.y - img_margin.size.y) / rows;
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ERR_FAIL_COND_V_MSG(chr_cell_width <= 0 || chr_cell_height <= 0, ERR_FILE_CANT_READ, "Image margin too big.");
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int chr_width = chr_cell_width - char_margin.position.x - char_margin.size.x;
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int chr_height = chr_cell_height - char_margin.position.y - char_margin.size.y;
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ERR_FAIL_COND_V_MSG(chr_width <= 0 || chr_height <= 0, ERR_FILE_CANT_READ, "Character margin too big.");
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Ref<FontFile> font;
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font.instantiate();
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font->set_antialiasing(TextServer::FONT_ANTIALIASING_NONE);
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font->set_generate_mipmaps(false);
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font->set_multichannel_signed_distance_field(false);
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font->set_fixed_size(chr_height);
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font->set_subpixel_positioning(TextServer::SUBPIXEL_POSITIONING_DISABLED);
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font->set_force_autohinter(false);
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font->set_allow_system_fallback(false);
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font->set_hinting(TextServer::HINTING_NONE);
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font->set_oversampling(1.0f);
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font->set_fallbacks(fallbacks);
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font->set_texture_image(0, Vector2i(chr_height, 0), 0, img);
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font->set_fixed_size_scale_mode(smode);
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int32_t pos = 0;
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for (const String &range : ranges) {
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int32_t start = -1;
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int32_t end = -1;
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int chr_adv = 0;
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Vector2i chr_off;
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{
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enum RangeParseStep {
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STEP_START_BEGIN,
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STEP_START_READ_HEX,
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STEP_START_READ_DEC,
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STEP_END_BEGIN,
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STEP_END_READ_HEX,
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STEP_END_READ_DEC,
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STEP_ADVANCE_BEGIN,
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STEP_OFF_X_BEGIN,
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STEP_OFF_Y_BEGIN,
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STEP_FINISHED,
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};
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RangeParseStep step = STEP_START_BEGIN;
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String token;
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for (int c = 0; c < range.length(); c++) {
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switch (step) {
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case STEP_START_BEGIN:
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case STEP_END_BEGIN: {
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// Read range start/end first symbol.
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if (range[c] == 'U' || range[c] == 'u') {
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if ((c <= range.length() - 2) && range[c + 1] == '+') {
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token = String();
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if (step == STEP_START_BEGIN) {
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step = STEP_START_READ_HEX;
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} else {
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step = STEP_END_READ_HEX;
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}
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c++; // Skip "+".
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continue;
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}
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} else if (range[c] == '0') {
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if ((c <= range.length() - 2) && range[c + 1] == 'x') {
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token = String();
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if (step == STEP_START_BEGIN) {
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step = STEP_START_READ_HEX;
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} else {
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step = STEP_END_READ_HEX;
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}
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c++; // Skip "x".
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continue;
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}
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} else if (range[c] == '\'' || range[c] == '\"') {
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if ((c <= range.length() - 3) && (range[c + 2] == '\'' || range[c + 2] == '\"')) {
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token = String();
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if (step == STEP_START_BEGIN) {
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start = range.unicode_at(c + 1);
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step = STEP_END_BEGIN;
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} else {
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end = range.unicode_at(c + 1);
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step = STEP_ADVANCE_BEGIN;
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}
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c = c + 2; // Skip the rest or token.
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continue;
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}
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} else if (is_digit(range[c])) {
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// Read decimal value, start.
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c++;
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token = String();
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if (step == STEP_START_BEGIN) {
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step = STEP_START_READ_DEC;
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} else {
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step = STEP_END_READ_DEC;
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}
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token += range[c];
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continue;
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}
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[[fallthrough]];
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}
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case STEP_ADVANCE_BEGIN:
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case STEP_OFF_X_BEGIN:
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case STEP_OFF_Y_BEGIN: {
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// Read advance and offset.
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if (range[c] == ' ') {
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int next = range.find(" ", c + 1);
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if (next < c) {
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next = range.length();
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}
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if (step == STEP_OFF_X_BEGIN) {
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chr_off.x = range.substr(c + 1, next - (c + 1)).to_int();
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step = STEP_OFF_Y_BEGIN;
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} else if (step == STEP_OFF_Y_BEGIN) {
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chr_off.y = range.substr(c + 1, next - (c + 1)).to_int();
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step = STEP_FINISHED;
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} else {
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chr_adv = range.substr(c + 1, next - (c + 1)).to_int();
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step = STEP_OFF_X_BEGIN;
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}
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c = next - 1;
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continue;
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}
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} break;
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case STEP_START_READ_HEX:
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case STEP_END_READ_HEX: {
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// Read hexadecimal value.
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if (is_hex_digit(range[c])) {
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token += range[c];
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} else {
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if (step == STEP_START_READ_HEX) {
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start = token.hex_to_int();
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step = STEP_END_BEGIN;
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} else {
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end = token.hex_to_int();
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step = STEP_ADVANCE_BEGIN;
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}
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}
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} break;
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case STEP_START_READ_DEC:
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case STEP_END_READ_DEC: {
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// Read decimal value.
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if (is_digit(range[c])) {
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token += range[c];
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} else {
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if (step == STEP_START_READ_DEC) {
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start = token.to_int();
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step = STEP_END_BEGIN;
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} else {
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end = token.to_int();
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step = STEP_ADVANCE_BEGIN;
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}
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}
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} break;
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default: {
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WARN_PRINT(vformat("Invalid character \"%d\" in the range: \"%s\"", c, range));
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} break;
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}
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}
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if (end == -1) {
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end = start;
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}
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if (start == -1) {
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WARN_PRINT(vformat("Invalid range: \"%s\"", range));
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continue;
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}
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}
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for (int32_t idx = MIN(start, end); idx <= MAX(start, end); idx++) {
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ERR_FAIL_COND_V_MSG(pos >= count, ERR_CANT_CREATE, "Too many characters in range, should be " + itos(columns * rows));
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int x = pos % columns;
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int y = pos / columns;
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font->set_glyph_advance(0, chr_height, idx, Vector2(chr_width + chr_adv, 0));
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font->set_glyph_offset(0, Vector2i(chr_height, 0), idx, Vector2i(0, -0.5 * chr_height) + chr_off);
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font->set_glyph_size(0, Vector2i(chr_height, 0), idx, Vector2(chr_width, chr_height));
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font->set_glyph_uv_rect(0, Vector2i(chr_height, 0), idx, Rect2(img_margin.position.x + chr_cell_width * x + char_margin.position.x, img_margin.position.y + chr_cell_height * y + char_margin.position.y, chr_width, chr_height));
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font->set_glyph_texture_idx(0, Vector2i(chr_height, 0), idx, 0);
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pos++;
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}
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}
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for (const String &kp : kern) {
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const Vector<String> &kp_tokens = kp.split(" ");
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if (kp_tokens.size() != 3) {
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WARN_PRINT(vformat("Invalid kerning pairs string: \"%s\"", kp));
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continue;
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}
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int offset = kp_tokens[2].to_int();
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for (int a = 0; a < kp_tokens[0].length(); a++) {
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for (int b = 0; b < kp_tokens[1].length(); b++) {
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font->set_kerning(0, chr_height, Vector2i(kp_tokens[0].unicode_at(a), kp_tokens[1].unicode_at(b)), Vector2(offset, 0));
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}
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}
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}
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if (ascent > 0) {
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font->set_cache_ascent(0, chr_height, ascent);
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} else {
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font->set_cache_ascent(0, chr_height, 0.5 * chr_height);
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}
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if (descent > 0) {
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font->set_cache_descent(0, chr_height, descent);
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} else {
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font->set_cache_descent(0, chr_height, 0.5 * chr_height);
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}
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int flg = 0;
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if ((bool)p_options["compress"]) {
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flg |= ResourceSaver::SaverFlags::FLAG_COMPRESS;
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}
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print_verbose("Saving to: " + p_save_path + ".fontdata");
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err = ResourceSaver::save(font, p_save_path + ".fontdata", flg);
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ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot save font to file \"" + p_save_path + ".res\".");
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print_verbose("Done saving to: " + p_save_path + ".fontdata");
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return OK;
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}
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ResourceImporterImageFont::ResourceImporterImageFont() {
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}
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