575 lines
14 KiB
C++
575 lines
14 KiB
C++
/*************************************************************************/
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/* font.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2015 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 "font.h"
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#include "core/os/file_access.h"
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#include "core/io/resource_loader.h"
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void Font::_set_chars(const DVector<int>& p_chars) {
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int len = p_chars.size();
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//char 1 charsize 1 texture, 4 rect, 2 align, advance 1
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ERR_FAIL_COND(len%9);
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if (!len)
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return; //none to do
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int chars = len/9;
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DVector<int>::Read r=p_chars.read();
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for(int i=0;i<chars;i++) {
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const int* data = &r[i*9];
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add_char(data[0],data[1],Rect2(data[2],data[3],data[4],data[5]), Size2(data[6],data[7]),data[8]);
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}
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}
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DVector<int> Font::_get_chars() const {
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DVector<int> chars;
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const CharType* key=NULL;
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while((key=char_map.next(key))) {
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const Character *c=char_map.getptr(*key);
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chars.push_back(*key);
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chars.push_back(c->texture_idx);
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chars.push_back(c->rect.pos.x);
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chars.push_back(c->rect.pos.y);
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chars.push_back(c->rect.size.x);
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chars.push_back(c->rect.size.y);
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chars.push_back(c->h_align);
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chars.push_back(c->v_align);
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chars.push_back(c->advance);
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}
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return chars;
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}
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void Font::_set_kernings(const DVector<int>& p_kernings) {
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int len=p_kernings.size();
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ERR_FAIL_COND(len%3);
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if (!len)
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return;
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DVector<int>::Read r=p_kernings.read();
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for(int i=0;i<len/3;i++) {
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const int* data = &r[i*3];
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add_kerning_pair(data[0],data[1],data[2]);
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}
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}
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DVector<int> Font::_get_kernings() const {
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DVector<int> kernings;
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for(Map<KerningPairKey,int>::Element *E=kerning_map.front();E;E=E->next()) {
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kernings.push_back(E->key().A);
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kernings.push_back(E->key().B);
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kernings.push_back(E->get());
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}
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return kernings;
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}
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void Font::_set_textures(const Vector<Variant> & p_textures) {
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for(int i=0;i<p_textures.size();i++) {
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Ref<Texture> tex = p_textures[i];
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ERR_CONTINUE(!tex.is_valid());
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add_texture(tex);
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}
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}
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Vector<Variant> Font::_get_textures() const {
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Vector<Variant> rtextures;
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for(int i=0;i<textures.size();i++)
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rtextures.push_back(textures[i].get_ref_ptr());
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return rtextures;
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}
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Error Font::create_from_fnt(const String& p_string) {
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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_string,FileAccess::READ);
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if (!f) {
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ERR_EXPLAIN("Can't open font: "+p_string);
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ERR_FAIL_V(ERR_FILE_NOT_FOUND);
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}
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clear();
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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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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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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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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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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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keys[key]=value;
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}
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if (type=="info") {
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if (keys.has("face"))
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set_name(keys["face"]);
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//if (keys.has("size"))
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// font->set_height(keys["size"].to_int());
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} else if (type=="common") {
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if (keys.has("lineHeight"))
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set_height(keys["lineHeight"].to_int());
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if (keys.has("base"))
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set_ascent(keys["base"].to_int());
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} else if (type=="page") {
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if (keys.has("file")) {
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String file = keys["file"];
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file=p_string.get_base_dir()+"/"+file;
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Ref<Texture> 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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add_texture(tex);
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}
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}
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} else if (type=="char") {
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CharType idx=0;
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if (keys.has("id"))
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idx=keys["id"].to_int();
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Rect2 rect;
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if (keys.has("x"))
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rect.pos.x=keys["x"].to_int();
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if (keys.has("y"))
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rect.pos.y=keys["y"].to_int();
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if (keys.has("width"))
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rect.size.width=keys["width"].to_int();
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if (keys.has("height"))
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rect.size.height=keys["height"].to_int();
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Point2 ofs;
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if (keys.has("xoffset"))
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ofs.x=keys["xoffset"].to_int();
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if (keys.has("yoffset"))
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ofs.y=keys["yoffset"].to_int();
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int texture=0;
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if (keys.has("page"))
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texture=keys["page"].to_int();
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int advance=-1;
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if (keys.has("xadvance"))
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advance=keys["xadvance"].to_int();
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add_char(idx,texture,rect,ofs,advance);
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} else if (type=="kerning") {
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CharType first=0,second=0;
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int k=0;
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if (keys.has("first"))
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first=keys["first"].to_int();
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if (keys.has("second"))
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second=keys["second"].to_int();
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if (keys.has("amount"))
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k=keys["amount"].to_int();
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add_kerning_pair(first,second,-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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memdelete(f);
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return OK;
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}
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void Font::set_height(float p_height) {
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height=p_height;
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}
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float Font::get_height() const{
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return height;
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}
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void Font::set_ascent(float p_ascent){
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ascent=p_ascent;
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}
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float Font::get_ascent() const {
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return ascent;
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}
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float Font::get_descent() const {
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return height-ascent;
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}
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void Font::add_texture(const Ref<Texture>& p_texture) {
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ERR_FAIL_COND( p_texture.is_null());
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textures.push_back( p_texture );
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}
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int Font::get_texture_count() const {
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return textures.size();
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};
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Ref<Texture> Font::get_texture(int p_idx) const {
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ERR_FAIL_INDEX_V(p_idx, textures.size(), Ref<Texture>());
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return textures[p_idx];
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};
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int Font::get_character_count() const {
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return char_map.size();
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};
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Vector<CharType> Font::get_char_keys() const {
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Vector<CharType> chars;
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chars.resize(char_map.size());
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const CharType* ct = NULL;
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int count = 0;
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while ( (ct = char_map.next(ct)) ) {
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chars[count++] = *ct;
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};
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return chars;
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};
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Font::Character Font::get_character(CharType p_char) const {
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if (!char_map.has(p_char)) {
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ERR_FAIL_V(Character());
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};
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return char_map[p_char];
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};
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void Font::add_char(CharType p_char, int p_texture_idx, const Rect2& p_rect, const Size2& p_align, float p_advance) {
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if (p_advance<0)
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p_advance=p_rect.size.width;
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Character c;
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c.rect=p_rect;
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c.texture_idx=p_texture_idx;
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c.v_align=p_align.y;
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c.advance=p_advance;
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c.h_align=p_align.x;
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char_map[p_char]=c;
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}
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void Font::add_kerning_pair(CharType p_A,CharType p_B,int p_kerning) {
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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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Vector<Font::KerningPairKey> Font::get_kerning_pair_keys() const {
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Vector<Font::KerningPairKey> ret;
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ret.resize(kerning_map.size());
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int i=0;
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for (Map<KerningPairKey,int>::Element *E=kerning_map.front();E;E=E->next()) {
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ret[i++]=E->key();
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}
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return ret;
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}
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int Font::get_kerning_pair(CharType p_A,CharType p_B) const {
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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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const Map<KerningPairKey,int>::Element *E=kerning_map.find(kpk);
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if (E)
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return E->get();
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return 0;
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}
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void Font::set_distance_field_hint(bool p_distance_field) {
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distance_field_hint=p_distance_field;
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emit_changed();
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}
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bool Font::is_distance_field_hint() const{
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return distance_field_hint;
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}
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void Font::clear() {
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height=1;
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ascent=0;
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char_map.clear();
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textures.clear();
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kerning_map.clear();
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distance_field_hint=false;
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}
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Size2 Font::get_string_size(const String& p_string) const {
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float w=0;
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int l = p_string.length();
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if (l==0)
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return Size2(0,height);
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const CharType *sptr = &p_string[0];
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for (int i=0;i<l;i++) {
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w+=get_char_size(sptr[i],sptr[i+1]).width;
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}
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return Size2(w,height);
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}
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void Font::draw_halign(RID p_canvas_item, const Point2& p_pos, HAlign p_align,float p_width,const String& p_text,const Color& p_modulate) const {
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float length=get_string_size(p_text).width;
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if (length>=p_width) {
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draw(p_canvas_item,p_pos,p_text,p_modulate,p_width);
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return;
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}
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float ofs;
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switch(p_align) {
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case HALIGN_LEFT: {
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ofs=0;
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} break;
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case HALIGN_CENTER: {
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ofs = Math::floor( (p_width-length) / 2.0 );
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} break;
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case HALIGN_RIGHT: {
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ofs=p_width-length;
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} break;
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}
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draw(p_canvas_item,p_pos+Point2(ofs,0),p_text,p_modulate,p_width);
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}
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void Font::draw(RID p_canvas_item, const Point2& p_pos, const String& p_text, const Color& p_modulate,int p_clip_w) const {
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Point2 pos=p_pos;
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float ofs=0;
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VisualServer *vs = VisualServer::get_singleton();
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for (int i=0;i<p_text.length();i++) {
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const Character * c = char_map.getptr(p_text[i]);
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if (!c)
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continue;
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// if (p_clip_w>=0 && (ofs+c->rect.size.width)>(p_clip_w))
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// break; //width exceeded
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if (p_clip_w>=0 && (ofs+c->rect.size.width)>p_clip_w)
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break; //clip
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Point2 cpos=pos;
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cpos.x+=ofs+c->h_align;
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cpos.y-=ascent;
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cpos.y+=c->v_align;
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ERR_CONTINUE( c->texture_idx<-1 || c->texture_idx>=textures.size());
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if (c->texture_idx!=-1)
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textures[c->texture_idx]->draw_rect_region( p_canvas_item, Rect2( cpos, c->rect.size ), c->rect, p_modulate );
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ofs+=get_char_size(p_text[i],p_text[i+1]).width;
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}
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}
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float Font::draw_char(RID p_canvas_item, const Point2& p_pos, const CharType& p_char,const CharType& p_next,const Color& p_modulate) const {
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const Character * c = char_map.getptr(p_char);
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if (!c)
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return 0;
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Point2 cpos=p_pos;
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cpos.x+=c->h_align;
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cpos.y-=ascent;
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cpos.y+=c->v_align;
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ERR_FAIL_COND_V( c->texture_idx<-1 || c->texture_idx>=textures.size(),0);
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if (c->texture_idx!=-1)
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VisualServer::get_singleton()->canvas_item_add_texture_rect_region( p_canvas_item, Rect2( cpos, c->rect.size ), textures[c->texture_idx]->get_rid(),c->rect, p_modulate );
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return get_char_size(p_char,p_next).width;
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}
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void Font::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("set_height","px"),&Font::set_height);
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ObjectTypeDB::bind_method(_MD("get_height"),&Font::get_height);
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ObjectTypeDB::bind_method(_MD("set_ascent","px"),&Font::set_ascent);
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ObjectTypeDB::bind_method(_MD("get_ascent"),&Font::get_ascent);
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ObjectTypeDB::bind_method(_MD("get_descent"),&Font::get_descent);
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ObjectTypeDB::bind_method(_MD("add_kerning_pair","char_a","char_b","kerning"),&Font::add_kerning_pair);
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ObjectTypeDB::bind_method(_MD("get_kerning_pair"),&Font::get_kerning_pair);
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ObjectTypeDB::bind_method(_MD("add_texture","texture:Texture"),&Font::add_texture);
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ObjectTypeDB::bind_method(_MD("add_char","character","texture","rect","align","advance"),&Font::add_char,DEFVAL(Point2()),DEFVAL(-1));
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ObjectTypeDB::bind_method(_MD("get_texture_count"),&Font::get_texture_count);
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ObjectTypeDB::bind_method(_MD("get_texture:Texture","idx"),&Font::get_texture);
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ObjectTypeDB::bind_method(_MD("get_char_size","char","next"),&Font::get_char_size,DEFVAL(0));
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ObjectTypeDB::bind_method(_MD("get_string_size","string"),&Font::get_string_size);
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ObjectTypeDB::bind_method(_MD("set_distance_field_hint","enable"),&Font::set_distance_field_hint);
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ObjectTypeDB::bind_method(_MD("is_distance_field_hint"),&Font::is_distance_field_hint);
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ObjectTypeDB::bind_method(_MD("clear"),&Font::clear);
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ObjectTypeDB::bind_method(_MD("draw","canvas_item","pos","string","modulate","clip_w"),&Font::draw,DEFVAL(Color(1,1,1)),DEFVAL(-1));
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ObjectTypeDB::bind_method(_MD("draw_char","canvas_item","pos","char","next","modulate"),&Font::draw_char,DEFVAL(-1),DEFVAL(Color(1,1,1)));
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ObjectTypeDB::bind_method(_MD("_set_chars"),&Font::_set_chars);
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ObjectTypeDB::bind_method(_MD("_get_chars"),&Font::_get_chars);
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ObjectTypeDB::bind_method(_MD("_set_kernings"),&Font::_set_kernings);
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ObjectTypeDB::bind_method(_MD("_get_kernings"),&Font::_get_kernings);
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ObjectTypeDB::bind_method(_MD("_set_textures"),&Font::_set_textures);
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ObjectTypeDB::bind_method(_MD("_get_textures"),&Font::_get_textures);
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ADD_PROPERTY( PropertyInfo( Variant::ARRAY, "textures", PROPERTY_HINT_NONE,"", PROPERTY_USAGE_NOEDITOR ), _SCS("_set_textures"), _SCS("_get_textures") );
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ADD_PROPERTY( PropertyInfo( Variant::INT_ARRAY, "chars", PROPERTY_HINT_NONE,"", PROPERTY_USAGE_NOEDITOR ), _SCS("_set_chars"), _SCS("_get_chars") );
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ADD_PROPERTY( PropertyInfo( Variant::INT_ARRAY, "kernings", PROPERTY_HINT_NONE,"", PROPERTY_USAGE_NOEDITOR ), _SCS("_set_kernings"), _SCS("_get_kernings") );
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ADD_PROPERTY( PropertyInfo( Variant::REAL, "height", PROPERTY_HINT_RANGE,"-1024,1024,1" ), _SCS("set_height"), _SCS("get_height") );
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ADD_PROPERTY( PropertyInfo( Variant::REAL, "ascent", PROPERTY_HINT_RANGE,"-1024,1024,1" ), _SCS("set_ascent"), _SCS("get_ascent") );
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ADD_PROPERTY( PropertyInfo( Variant::BOOL, "distance_field" ), _SCS("set_distance_field_hint"), _SCS("is_distance_field_hint") );
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}
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Font::Font() {
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clear();
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}
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Font::~Font() {
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clear();
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}
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