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transmission/gtk/IconCache.cc
Mike Gelfand c75c6bf5c8
Add support for GTK 4 (#3916)
* Make compact mode switch work for both GTK 3 and 4

* Implement GTK 4-specific view gesture handling

* Fix torrents view context menu on GTK 4

* Explicitly show/hide menubar on startup/teardown

* Switch from `Gtk::Pixbuf` to `Gio::Icon` for views

* Support GTK 4 exceptions based on `std::exception`

* Fix options menu setup with GTK 4

* Use `delete-event` (GTK 3) and `close-request` (GTK 4) signals to handle window clousure

* Add custom file chooser button implementation

GTK 4 drops FileChooserButton widget and suggests implementing it using
Button.

* Add helpers to set X11 hints with GTK 4

* Remove `HigWorkarea` class that's no longer used

* Make main menu shortcuts work with GTK 4

* Make drops work in main window and make dialog with GTK 4

* Remove unused `gtr_action_get_widget()` helper

* Fix text direction mark setup with GTK 4 (due to switch to enum class)

* Fix file tree font size calculation with GTK 4

* Fix crash during shutdown with GTK 4

* Switch from `RadioButton` to `CheckButton` for compatibility with GTK 4

* Fix opening files with GTK 4

* Rework torrent cell renderer to support both GTK 3 and 4

* Disable system tray icon support with GTK 4

* Fix windows positioning with GTK 4

* Fix focus event handling with GTK 4

* Adapt to tree model row/iterator changes in GTK 4

* Adapt to toplevel/root window changes in GTK 4

* Adapt to clipboard changes in GTK 4

* Adapt to icon/theme changes in GTK 4

* Adapt to file/path changes in GTK 4

* Random leftover fixes for GTK 4 compatibility

* Clean up unused code

* Move GTK 3 *.ui files into a subdirectory

* Add GTK 4 *.ui files

* Search for both GTK 3 and 4 during configuration
2022-10-09 01:50:03 +03:00

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C++

/*
* icons.[ch] written by Paolo Bacchilega, who writes:
* "There is no problem for me, you can license my code
* under whatever licence you wish :)"
*
*/
#include <algorithm>
#include <map>
#include <string>
#include <string_view>
#include <utility>
#include <glibmm.h>
#include <giomm.h>
#include "IconCache.h"
#include "Utils.h"
using namespace std::literals;
using IconCache = std::map<std::string, Glib::RefPtr<Gio::Icon>, std::less<>>;
std::string_view const DirectoryMimeType = "folder"sv;
std::string_view const UnknownMimeType = "unknown"sv;
Glib::RefPtr<Gio::Icon> gtr_get_mime_type_icon(std::string_view mime_type)
{
static IconCache cache;
if (auto mime_it = cache.find(mime_type); mime_it != std::end(cache))
{
return mime_it->second;
}
auto mime_type_str = std::string{ mime_type };
auto icon = Gio::content_type_get_icon(mime_type_str);
if (icon != nullptr)
{
cache.try_emplace(std::move(mime_type_str), icon);
}
return icon;
}