Commit graph

20 commits

Author SHA1 Message Date
Mira Grudzinska
934a6e5418 ttf: prevent crash while converting utf8 to unicode
If wrong utf8 sequence if given as an input, decoding
return nullptr and it has to be handled correctly.
2025-04-11 19:18:04 +09:00
Hermet Park
bd520c1c69 ttf: ++thread safety
Properly allow the ttf loader sharable among threads.

issue: https://github.com/thorvg/thorvg/issues/3165
2025-03-25 17:02:58 +09:00
Hermet Park
9e6a514022 common: ++stability of the font cache
Use the font name as the cache key for
precise comparison instead of the file path.
2025-03-06 19:00:06 +09:00
Hermet Park
b77f3ca024 common: introduced designated memory allocators
Support the bindings to be more integrable with a system's coherent memory management.

Pleaes note that thorvg now only allow the desinated memory allocators here:
malloc -> tvg::malloc
calloc -> tvg::calloc
realloc -> tvg::realloc
free -> tvg::free

issue: https://github.com/thorvg/thorvg/issues/2652
2025-02-18 17:20:31 +09:00
Hermet Park
a12accbc93 updated copyright 2025-01-03 14:32:31 +09:00
Hermet Park
1422c4ca5f renderer: make the file io configurable
certain systems, may not support file I/O operations.
ThorVG should provide users with an option to configure
builds according to their requirements.

This ensures that file I/O calls are avoided,
preventing potential crashes.

Please use the meson '-Dfile=true/false' option for this.

Please note that "THORVG_FILE_IO_SUPPORT" might be expected
for your thorvg manual build.

issue: https://github.com/thorvg/thorvg/issues/3008
2024-12-02 11:50:59 +09:00
Hermet Park
4aaa0dafc4 common: code refactoring
replaced internal string usage with char*
2024-11-08 15:26:04 +09:00
Łukasz Pomietło
31e7d44a92
loader/ttf: Spaces and invalid glyphs rendering fix
If for any reason an invalid glyph is found in text, 
it will now be skipped when rendering 
(instead of increasing offset by last valid glyph advance).

Issue: #2687
2024-09-02 17:44:31 +09:00
Łukasz Pomietło
c92cf4e139 renderer/text: fix a missing text update
previously font size & italic style had been ignored
even if its attributes are changed.

Co-Authored-By: Hermet Park <hermet@lottiefiles.com>

issue: https://github.com/thorvg/thorvg/issues/2676
2024-08-28 21:30:16 +09:00
Łukasz Pomietło
dc0029a7e1
ttf_loader: Basic support for composite glyphs loading (#2600)
Adds the ability to load some composite glyphs and prevents an error when a composite glyph is used.

Implementation based on ttf glyf table documentation: https://learn.microsoft.com/en-us/typography/opentype/spec/glyf

There are still some missing features like scaling, parent glyph point based positioning etc. I think this is a topic for future work. Howerever, it looks like implemented features are enough for utf-8 latin subset in major fonts.

issue: #2599
2024-07-31 12:51:22 +09:00
Josh Soref
e061fa6628
common: fix 178+ spelling errors 2024-07-01 21:58:46 +09:00
Mira Grudzinska
d8a720fb7e ttf_loader: support loading from memory
New text API for loading fonts from memory
is introduced. This is necessary to enable
embedded fonts support.
2024-06-11 20:59:39 +09:00
Hermet Park
832f22e915 ttf: ++uwp portability
use the preprocessor directives properly.
2024-03-22 15:31:32 +09:00
Hermet Park
d9926edb2f ttf: enhance UWP portability with alternative file loading
Enhances the portability of the TTF loader on UWP platforms
by implementing an alternative file loading mechanism.

This is designed to support environments where the file mapping
feature is not available, ensuring wider compatibility and reliability
in file handling.

Issue: https://github.com/thorvg/thorvg/issues/1912
2024-03-18 11:02:40 +09:00
Hermet Park
e95025d6d8 ttf: Fixed an invalid unicode encoding.
Ensured the data count is correctly multiplied by the data size.
2024-01-09 00:57:43 +09:00
Hermet Park
139a1c5e85 ttf: fix the windows compilation errors. 2024-01-03 12:57:07 +09:00
Hermet Park
97f41b4ad5 text/ttf: fixed all memory violations. 2023-12-28 18:37:05 +09:00
Jinny You
2c6c8d3b21
updated copyright date (#1866) 2023-12-28 10:43:25 +09:00
Hermet Park
0f69eef8ed renderer: introduce a ThorVG Text interface.
Introduced New APIs under the experimental tags.

- Result Text::font(const char* name, float size, const char* style = nullptr);
- Result Text::text(const char* text);
- Result Text::fill(uint8_t r, uint8_t g, uint8_t b);
- static Result Text::load(const std::string& path);
- static Result Text::unload(const std::string& path);
- static Text::std::unique_ptr<Text> gen();
- static Text::uint32_t identifier()

@Issue: https://github.com/thorvg/thorvg/issues/969
2023-12-25 12:40:12 +09:00
Hermet Park
3c4e434b39 loader/ttf: introduce a new sfnt(scalable font) loader.
ttf is an industry standard format that is the most widely used
in the products. Now thorvg supports the basic features of
the font to supplement the text drawing.

The implementation is followed the ttf spec,
the covered features are:

- horizontal layouting with kerning.
- utf8 -> utf32 converted glyph drawing.

To use the feature, please enable ttf loader:
$meson -Dloaders="ttf_beta, ..."

@Issue: https://github.com/thorvg/thorvg/issues/969
2023-12-25 12:40:12 +09:00