ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2025-04-11 13:22:33 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

vfs_ttf: update glyphs when font file changes

Browse Source 
genodelabs/genode#4135
This commit is contained in:
Johannes Schlatow 2021-05-05 18:08:06 +02:00 committed by Christian Helmuth
parent 18a43c1afd
commit 4daf19ec7e
1 changed files with 34 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
repos/gems/src/lib/vfs/ttf/vfs.cc
View File

@ -64,22 +64,36 @@ struct Vfs_ttf::Font_from_file
};
struct Vfs_ttf::Local_factory : File_system_factory
struct Vfs_ttf::Local_factory : File_system_factory, Watch_response_handler
{
Vfs::Env &_env;
struct Font_config
{
Directory::Path path;
float size;
Cached_font::Limit cache_limit;
Font_config(Xml_node const &config)
:
path(config.attribute_value("path", Directory::Path())),
size(config.attribute_value("size_px", 16.0)),
cache_limit({config.attribute_value("cache", Number_of_bytes())})
{ }
} _font_config;
struct Font
{
Font_from_file font;
Cached_font::Limit cache_limit;
Cached_font cached_font;
Font(Vfs::Env &env, Xml_node config)
Font(Vfs::Env &env, Font_config &config)
:
font(env,
config.attribute_value("path", Directory::Path()),
config.attribute_value("size_px", 16.0)),
cache_limit({config.attribute_value("cache", Number_of_bytes())}),
config.path,
config.size),
cache_limit(config.cache_limit),
cached_font(env.alloc(), font.font(), cache_limit)
{ }
};
@ -93,6 +107,8 @@ struct Vfs_ttf::Local_factory : File_system_factory
Readonly_value_file_system<unsigned> _max_width_fs { "max_width", 0 };
Readonly_value_file_system<unsigned> _max_height_fs { "max_height", 0 };
Watcher _watcher;
void _update_attributes()
{
_baseline_fs .value(_font->font.font().baseline());
@ -103,7 +119,10 @@ struct Vfs_ttf::Local_factory : File_system_factory
Local_factory(Vfs::Env &env, Xml_node config)
:
_env(env), _font(env, config)
_env(env),
_font_config(config),
_font(env, _font_config),
_watcher(env, _font_config.path, *this)
{
_update_attributes();
}
@ -125,7 +144,15 @@ struct Vfs_ttf::Local_factory : File_system_factory
void apply_config(Xml_node const &config)
{
_font.construct(_env, config);
_font_config = Font_config(config);
_font.construct(_env, _font_config);
_update_attributes();
_glyphs_fs.trigger_watch_response();
}
void watch_response() override
{
_font.construct(_env, _font_config);
_update_attributes();
_glyphs_fs.trigger_watch_response();
}