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ResourceFormatLoader and ResourceFormatSaver are meant to be overridden to add support for different formats in ResourceLoader and ResourceSaver. Those should be exposed as they can be overridden in plugins. On the other hand, all predefined subclasses of those two base classes are only meant to register support for new file and resource types, but should not and cannot be used directly from script, so they should not be exposed. Also unexposed ResourceImporterOGGVorbis (and thus its base class ResourceImporter) which are editor-only.
213 lines
7.1 KiB
C++
213 lines
7.1 KiB
C++
/*************************************************************************/
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/* font.h */
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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) 2007-2019 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2019 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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#ifndef FONT_H
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#define FONT_H
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#include "core/map.h"
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#include "core/resource.h"
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#include "scene/resources/texture.h"
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/**
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@author Juan Linietsky <reduzio@gmail.com>
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*/
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class Font : public Resource {
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GDCLASS(Font, Resource);
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protected:
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static void _bind_methods();
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public:
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virtual float get_height() const = 0;
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virtual float get_ascent() const = 0;
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virtual float get_descent() const = 0;
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virtual Size2 get_char_size(CharType p_char, CharType p_next = 0) const = 0;
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Size2 get_string_size(const String &p_string) const;
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Size2 get_wordwrap_string_size(const String &p_string, float p_width) const;
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virtual bool is_distance_field_hint() const = 0;
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void draw(RID p_canvas_item, const Point2 &p_pos, const String &p_text, const Color &p_modulate = Color(1, 1, 1), int p_clip_w = -1, const Color &p_outline_modulate = Color(1, 1, 1)) const;
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void draw_halign(RID p_canvas_item, const Point2 &p_pos, HAlign p_align, float p_width, const String &p_text, const Color &p_modulate = Color(1, 1, 1), const Color &p_outline_modulate = Color(1, 1, 1)) const;
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virtual bool has_outline() const { return false; }
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virtual float draw_char(RID p_canvas_item, const Point2 &p_pos, CharType p_char, CharType p_next = 0, const Color &p_modulate = Color(1, 1, 1), bool p_outline = false) const = 0;
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void update_changes();
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Font();
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};
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// Helper class to that draws outlines immediately and draws characters in its destructor.
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class FontDrawer {
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const Ref<Font> &font;
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Color outline_color;
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bool has_outline;
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struct PendingDraw {
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RID canvas_item;
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Point2 pos;
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CharType chr;
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CharType next;
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Color modulate;
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};
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Vector<PendingDraw> pending_draws;
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public:
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FontDrawer(const Ref<Font> &p_font, const Color &p_outline_color) :
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font(p_font),
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outline_color(p_outline_color) {
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has_outline = p_font->has_outline();
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}
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float draw_char(RID p_canvas_item, const Point2 &p_pos, CharType p_char, CharType p_next = 0, const Color &p_modulate = Color(1, 1, 1)) {
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if (has_outline) {
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PendingDraw draw = { p_canvas_item, p_pos, p_char, p_next, p_modulate };
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pending_draws.push_back(draw);
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}
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return font->draw_char(p_canvas_item, p_pos, p_char, p_next, has_outline ? outline_color : p_modulate, has_outline);
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}
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~FontDrawer() {
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for (int i = 0; i < pending_draws.size(); ++i) {
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const PendingDraw &draw = pending_draws[i];
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font->draw_char(draw.canvas_item, draw.pos, draw.chr, draw.next, draw.modulate, false);
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}
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}
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};
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class BitmapFont : public Font {
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GDCLASS(BitmapFont, Font);
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RES_BASE_EXTENSION("font");
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Vector<Ref<Texture> > textures;
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public:
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struct Character {
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int texture_idx;
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Rect2 rect;
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float v_align;
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float h_align;
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float advance;
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Character() {
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texture_idx = 0;
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v_align = 0;
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}
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};
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struct KerningPairKey {
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union {
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struct {
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uint32_t A, B;
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};
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uint64_t pair;
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};
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_FORCE_INLINE_ bool operator<(const KerningPairKey &p_r) const { return pair < p_r.pair; }
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};
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private:
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HashMap<CharType, Character> char_map;
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Map<KerningPairKey, int> kerning_map;
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float height;
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float ascent;
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bool distance_field_hint;
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void _set_chars(const PoolVector<int> &p_chars);
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PoolVector<int> _get_chars() const;
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void _set_kernings(const PoolVector<int> &p_kernings);
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PoolVector<int> _get_kernings() const;
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void _set_textures(const Vector<Variant> &p_textures);
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Vector<Variant> _get_textures() const;
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Ref<BitmapFont> fallback;
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protected:
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static void _bind_methods();
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public:
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Error create_from_fnt(const String &p_file);
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void set_height(float p_height);
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float get_height() const;
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void set_ascent(float p_ascent);
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float get_ascent() const;
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float get_descent() const;
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void add_texture(const Ref<Texture> &p_texture);
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void add_char(CharType p_char, int p_texture_idx, const Rect2 &p_rect, const Size2 &p_align, float p_advance = -1);
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int get_character_count() const;
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Vector<CharType> get_char_keys() const;
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Character get_character(CharType p_char) const;
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int get_texture_count() const;
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Ref<Texture> get_texture(int p_idx) const;
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void add_kerning_pair(CharType p_A, CharType p_B, int p_kerning);
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int get_kerning_pair(CharType p_A, CharType p_B) const;
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Vector<KerningPairKey> get_kerning_pair_keys() const;
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Size2 get_char_size(CharType p_char, CharType p_next = 0) const;
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void set_fallback(const Ref<BitmapFont> &p_fallback);
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Ref<BitmapFont> get_fallback() const;
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void clear();
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void set_distance_field_hint(bool p_distance_field);
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bool is_distance_field_hint() const;
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float draw_char(RID p_canvas_item, const Point2 &p_pos, CharType p_char, CharType p_next = 0, const Color &p_modulate = Color(1, 1, 1), bool p_outline = false) const;
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BitmapFont();
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~BitmapFont();
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};
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class ResourceFormatLoaderBMFont : public ResourceFormatLoader {
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public:
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virtual RES load(const String &p_path, const String &p_original_path = "", Error *r_error = NULL);
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virtual void get_recognized_extensions(List<String> *p_extensions) const;
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virtual bool handles_type(const String &p_type) const;
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virtual String get_resource_type(const String &p_path) const;
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};
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#endif
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