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implement our own custom FileChooserButton, with the aim of speeding up startup time

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See #4140

Compiles fine, but needs testing...
This commit is contained in:
Alberto Griggio
2017-10-24 00:27:55 +02:00
parent 8c328cafd1
commit df8b52f978
7 changed files with 252 additions and 38 deletions
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56
rtgui/guiutils.h
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@@ -33,6 +33,7 @@
// for convenience...
#include "pathutils.h"
#include "multilangmgr.h"
Glib::ustring escapeHtmlChars(const Glib::ustring &src);
@@ -358,22 +359,69 @@ class MyHScale : public Gtk::HScale
/**
* @brief subclass of Gtk::FileChooserButton in order to handle the scrollwheel
*/
class MyFileChooserButton : public Gtk::FileChooserButton
{
class MyFileChooserButton: public Gtk::Button {
private:
void show_chooser();
Glib::ustring title_;
Gtk::FileChooserAction action_;
Gtk::HBox box_;
Gtk::Label lbl_;
std::string filename_;
std::string current_folder_;
std::vector<Glib::RefPtr<Gtk::FileFilter>> file_filters_;
Glib::RefPtr<Gtk::FileFilter> cur_filter_;
std::vector<std::string> shortcut_folders_;
sigc::signal<void> selection_changed_;
protected:
bool on_scroll_event (GdkEventScroll* event);
void get_preferred_width_vfunc (int &minimum_width, int &natural_width) const;
void get_preferred_width_for_height_vfunc (int height, int &minimum_width, int &natural_width) const;
void set_none();
public:
MyFileChooserButton (const Glib::ustring& title, Gtk::FileChooserAction action = Gtk::FILE_CHOOSER_ACTION_OPEN);
MyFileChooserButton(const Glib::ustring &title, Gtk::FileChooserAction action=Gtk::FILE_CHOOSER_ACTION_OPEN);
sigc::signal<void> &signal_selection_changed();
sigc::signal<void> &signal_file_set();
std::string get_filename() const;
bool set_filename(const std::string &filename);
void add_filter(const Glib::RefPtr<Gtk::FileFilter> &filter);
void remove_filter(const Glib::RefPtr<Gtk::FileFilter> &filter);
void set_filter(const Glib::RefPtr<Gtk::FileFilter> &filter);
std::vector<Glib::RefPtr<Gtk::FileFilter>> list_filters();
bool set_current_folder(const std::string &filename);
std::string get_current_folder() const;
bool add_shortcut_folder(const std::string &folder);
bool remove_shortcut_folder(const std::string &folder);
void unselect_all();
void unselect_filename(const std::string &filename);
};
/**
* @brief A helper method to connect the current folder property of a file chooser to an arbitrary variable.
*/
void bindCurrentFolder (Gtk::FileChooser& chooser, Glib::ustring& variable);
template <class FileChooser>
void bindCurrentFolder (FileChooser& chooser, Glib::ustring& variable)
{
chooser.signal_selection_changed ().connect ([&]()
{
const auto current_folder = chooser.get_current_folder ();
if (!current_folder.empty ())
variable = current_folder;
});
if (!variable.empty ())
chooser.set_current_folder (variable);
}
typedef enum RTUpdatePolicy {
RTUP_STATIC,