1426cd3b3a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see". Backported from #70885.
231 lines
8.3 KiB
C++
231 lines
8.3 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) 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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#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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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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enum ContourPointTag {
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CONTOUR_CURVE_TAG_ON = 0x01,
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CONTOUR_CURVE_TAG_OFF_CONIC = 0x00,
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CONTOUR_CURVE_TAG_OFF_CUBIC = 0x02
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};
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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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Size2 total_size_of_lines(Vector<String> p_lines);
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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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virtual RID get_char_texture(CharType p_char, CharType p_next, bool p_outline) const = 0;
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virtual Size2 get_char_texture_size(CharType p_char, CharType p_next, bool p_outline) const = 0;
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virtual Vector2 get_char_tx_offset(CharType p_char, CharType p_next, bool p_outline) const = 0;
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virtual Size2 get_char_tx_size(CharType p_char, CharType p_next, bool p_outline) const = 0;
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virtual Rect2 get_char_tx_uv_rect(CharType p_char, CharType p_next, bool p_outline) const = 0;
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virtual Dictionary get_char_contours(CharType p_char, CharType p_next = 0) const { return Dictionary(); }
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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<int32_t, 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(int32_t 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<int32_t> get_char_keys() const;
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Character get_character(int32_t 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(int32_t p_A, int32_t p_B, int p_kerning);
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int get_kerning_pair(int32_t p_A, int32_t 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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RID get_char_texture(CharType p_char, CharType p_next, bool p_outline) const;
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Size2 get_char_texture_size(CharType p_char, CharType p_next, bool p_outline) const;
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Vector2 get_char_tx_offset(CharType p_char, CharType p_next, bool p_outline) const;
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Size2 get_char_tx_size(CharType p_char, CharType p_next, bool p_outline) const;
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Rect2 get_char_tx_uv_rect(CharType p_char, CharType p_next, bool p_outline) 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 = nullptr, bool p_no_subresource_cache = false);
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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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VARIANT_ENUM_CAST(Font::ContourPointTag);
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#endif // FONT_H
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