C++ source, ASCII text
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#include "gpanthera.hh"
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#include <cassert>
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#include <iostream>
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#include <utility>
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#include <libintl.h>
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#include <locale.h>
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#include <filesystem>
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#define _(STRING) gettext(STRING)
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namespace gPanthera {
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sigc::signal<void(double, double)> add_context_menu(Gtk::Widget &widget) {
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sigc::signal<void(double, double)> signal;
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// Add a context menu to a widget
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auto gesture_click = Gtk::GestureClick::create();
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gesture_click->set_button(3);
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auto gesture_keyboard = Gtk::EventControllerKey::create();
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gesture_click->signal_pressed().connect([&widget, signal](int n_press, double x, double y) {
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if(n_press == 1) {
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signal.emit(x, y);
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}
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}, false);
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gesture_keyboard->signal_key_pressed().connect([&widget, signal](int keyval, int keycode, Gdk::ModifierType state) {
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if((keyval == GDK_KEY_F10) && (state == Gdk::ModifierType::SHIFT_MASK) || keyval == GDK_KEY_Menu) {
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// auto popover = Gtk::make_managed<Gtk::PopoverMenu>();
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// popover->set_menu_model(menu);
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// popover->set_has_arrow(false);
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// popover->set_halign(Gtk::Align::START);
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// popover->set_pointing_to(Gdk::Rectangle(0, 0, 1, 1));
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// popover->set_parent(widget);
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// popover->popup();
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signal.emit(0, 0);
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}
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return true;
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}, false);
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widget.add_controller(gesture_click);
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widget.add_controller(gesture_keyboard);
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return signal;
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}
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std::vector<Gtk::Widget*> collect_children(Gtk::Widget &widget) {
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// Get a vector of the children of a GTK widget, since the container API was removed in GTK 4
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std::vector<Gtk::Widget*> children;
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for(auto *child = widget.get_first_child(); child; child = child->get_next_sibling()) {
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children.push_back(child);
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}
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return children;
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}
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Gtk::Image *copy_image(Gtk::Image *image) {
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// Generate a new Gtk::Image with the same contents as an existing one
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if(image->get_storage_type() == Gtk::Image::Type::PAINTABLE) {
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return Gtk::make_managed<Gtk::Image>(image->get_paintable());
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} else if(image->get_storage_type() == Gtk::Image::Type::ICON_NAME) {
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auto new_image = Gtk::make_managed<Gtk::Image>();
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new_image->set_from_icon_name(image->get_icon_name());
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return new_image;
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} else {
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return nullptr;
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}
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}
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void init() {
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g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
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// Set up gettext configurationIsn't
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bindtextdomain("gpanthera", "./locales");
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textdomain("gpanthera");
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}
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DockablePane::DockablePane(std::shared_ptr<LayoutManager> layout, Gtk::Widget &child, const Glib::ustring &name, const Glib::ustring &label, Gtk::Image *icon, DockStack *stack, Gtk::Widget *custom_header)
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: Gtk::Box(Gtk::Orientation::VERTICAL, 0), name(name) {
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if(icon) {
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this->icon = icon;
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}
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if(stack) {
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this->stack = stack;
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}
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this->layout = std::move(layout);
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this->label.set_text(label);
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// This should be replaced with a custom class in the future
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header = std::make_unique<Gtk::HeaderBar>();
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header->set_show_title_buttons(false);
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if(custom_header) {
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header->set_title_widget(*custom_header);
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} else {
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header->set_title_widget(this->label);
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}
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header->add_css_class("gpanthera-dock-titlebar");
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auto header_menu_button = Gtk::make_managed<Gtk::MenuButton>();
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header_menu_button->set_direction(Gtk::ArrowType::NONE);
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// Pane menu
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this->action_group = Gio::SimpleActionGroup::create();
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header_menu_button->insert_action_group("win", action_group);
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// Close action
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auto close_action = Gio::SimpleAction::create("close");
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close_action->signal_activate().connect([this](const Glib::VariantBase&) {
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if(this->stack) {
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this->stack->set_visible_child("");
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}
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});
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action_group->add_action(close_action);
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header_menu->append(_("Close"), "win.close");
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// Pop out action
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auto pop_out_action = Gio::SimpleAction::create("pop_out");
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pop_out_action->signal_activate().connect([this](const Glib::VariantBase&) {
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if(this->stack) {
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this->pop_out();
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}
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});
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action_group->add_action(pop_out_action);
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header_menu->append(_("Pop out"), "win.pop_out");
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// Move menu
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auto move_menu = Gio::Menu::create();
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for(auto &this_stack : this->layout->stacks) {
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auto action_name = "move_" + this_stack->name;
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auto move_action = Gio::SimpleAction::create(action_name);
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move_action->signal_activate().connect([this, this_stack](const Glib::VariantBase&) {
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this_stack->add_pane(*this);
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});
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action_group->add_action(move_action);
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move_menu->append(this_stack->name, "win." + action_name);
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}
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// Add move submenu
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header_menu->append_submenu(_("Move"), move_menu);
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// Switch to traditional (nested) submenus, not sliding
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auto popover_menu = Gtk::make_managed<Gtk::PopoverMenu>(header_menu, Gtk::PopoverMenu::Flags::NESTED);
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popover_menu->set_has_arrow(false);
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header_menu_button->set_popover(*popover_menu);
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// TODO: Add a context menu as well
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header->pack_end(*header_menu_button);
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this->prepend(*header);
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this->child = &child;
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this->append(child);
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}
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Gtk::Stack *DockablePane::get_stack() const {
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return stack;
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}
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void DockablePane::redock(DockStack *stack) {
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if(this->window != nullptr) {
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this->window->hide();
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// Put the titlebar back
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this->window->unset_titlebar();
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this->window->set_decorated(false);
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this->header->get_style_context()->remove_class("titlebar");
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this->prepend(*this->header);
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this->window->unset_child();
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this->window->close();
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} else if(this->get_parent() && this->stack == this->get_parent()) {
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this->stack->remove(*this);
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}
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this->stack = stack;
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this->last_stack = stack;
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this->stack->add(*this, this->get_identifier());
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if(this->window != nullptr) {
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this->window->destroy();
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delete this->window;
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this->window = nullptr;
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// Re-enable the pop out option
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auto action = std::dynamic_pointer_cast<Gio::SimpleAction>(this->action_group->lookup_action("pop_out"));
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action->set_enabled(true);
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this->header->get_style_context()->remove_class("gpanthera-dock-titlebar-popout");
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}
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}
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void DockablePane::pop_out() {
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if(this->stack != nullptr) {
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this->stack->remove(*this);
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this->stack = nullptr;
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}
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if(this->window == nullptr) {
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// Remove the header bar from the pane, so it can be used as the titlebar of the window
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this->remove(*this->header);
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this->window = new DockWindow(this);
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this->window->set_titlebar(*this->header);
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this->window->set_child(*this);
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this->window->set_decorated(true);
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// Grey out the pop-out option
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auto action = std::dynamic_pointer_cast<Gio::SimpleAction>(this->action_group->lookup_action("pop_out"));
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action->set_enabled(false);
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this->header->get_style_context()->add_class("gpanthera-dock-titlebar-popout");
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}
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this->window->present();
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}
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Glib::ustring DockablePane::get_identifier() const {
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return name;
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}
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Gtk::Image *DockablePane::get_icon() const {
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return icon;
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}
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Gtk::Widget *DockablePane::get_child() const {
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return child;
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}
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Gtk::Label *DockablePane::get_label() {
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return &label;
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}
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LayoutManager::LayoutManager() : Glib::ObjectBase("LayoutManager") {
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}
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void LayoutManager::add_pane(DockablePane *pane) {
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panes.push_back(pane);
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}
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void LayoutManager::add_stack(DockStack *stack) {
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stacks.push_back(stack);
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}
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void LayoutManager::remove_pane(DockablePane *pane) {
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panes.erase(std::ranges::remove(panes, pane).begin(), panes.end());
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}
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void LayoutManager::remove_stack(DockStack *stack) {
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stacks.erase(std::ranges::remove(stacks, stack).begin(), stacks.end());
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}
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BaseStack::BaseStack() : Gtk::Stack() {
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}
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DockStack::DockStack(std::shared_ptr<LayoutManager> layout, const Glib::ustring &name) : BaseStack(), layout(layout), name(name) {
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auto empty_child = Gtk::make_managed<Gtk::Box>(Gtk::Orientation::VERTICAL, 0);
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this->add(*empty_child, "");
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// Add the stack to a layout manager
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this->layout->add_stack(this);
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// Hide the stack when no child is visible
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this->property_visible_child_name().signal_changed().connect([this]() {
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if(this->get_visible_child_name() == "") {
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this->hide();
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} else {
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this->show();
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}
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});
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// Also hide when the visible child is removed
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this->signal_child_removed.connect([this](Gtk::Widget* const &child) {
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if(this->get_visible_child_name() == "") {
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this->hide();
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}
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});
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this->set_visible_child("");
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this->hide();
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}
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DockWindow::DockWindow(DockablePane *pane) {
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this->pane = pane;
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this->set_child(*pane);
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// Attempting to close the window should redock the pane so it doesn't vanish
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this->signal_close_request().connect([this]() {
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this->pane->redock(this->pane->last_stack);
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return true;
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}, false);
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}
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DockStackSwitcher::DockStackSwitcher(DockStack *stack, Gtk::Orientation orientation) : Gtk::Box(orientation), stack(stack) {
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auto update_callback = [this](Gtk::Widget*) {
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this->update_buttons();
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};
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this->property_accessible_role().set_value(Gtk::Accessible::Role::TAB_LIST);
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stack->signal_child_added.connect(update_callback);
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stack->signal_child_removed.connect(update_callback);
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this->get_style_context()->add_class("gpanthera-dock-switcher");
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drop_target = Gtk::DropTarget::create(DockablePane::get_type(), Gdk::DragAction::MOVE);
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this->add_controller(drop_target);
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// Process dropped buttons
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drop_target->signal_drop().connect([this](const Glib::ValueBase& value, double x, double y) {
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const auto &widget = static_cast<const Glib::Value<DockablePane*>&>(value).get();
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if(widget) {
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if(auto pane = dynamic_cast<DockablePane*>(widget)) {
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this->stack->add_pane(*pane);
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}
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}
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return true; // Drop OK
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}, false);
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}
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DockStack *DockStackSwitcher::get_stack() const {
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return stack;
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}
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DockStackSwitcher::~DockStackSwitcher() {
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add_handler.disconnect();
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remove_handler.disconnect();
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}
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DockButton::DockButton(DockablePane *pane) : Gtk::ToggleButton(), pane(pane) {
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if(pane->get_icon()) {
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this->set_child(*copy_image(pane->get_icon()));
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}
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this->property_accessible_role().set_value(Gtk::Accessible::Role::TAB);
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this->set_tooltip_text(pane->get_label()->get_text());
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this->set_halign(Gtk::Align::CENTER);
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this->set_valign(Gtk::Align::CENTER);
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this->get_style_context()->add_class("toggle");
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this->get_style_context()->add_class("gpanthera-dock-button");
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// Add/remove CSS classes when the pane is shown/hidden
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active_style_handler = this->pane->get_stack()->property_visible_child_name().signal_changed().connect([this]() {
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this->update_active_style();
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});
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drag_source = Gtk::DragSource::create();
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drag_source->set_exclusive(false);
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// This is to prevent the click handler from taking over grabbing the button
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drag_source->set_propagation_phase(Gtk::PropagationPhase::CAPTURE);
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value.init(DockablePane::get_type());
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value.set(pane);
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// Add the drag source to the button
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this->add_controller(drag_source);
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this->signal_clicked().connect([this, pane]() {
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if(pane->get_stack()->get_visible_child_name() == pane->get_identifier()) {
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pane->get_stack()->set_visible_child("");
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} else {
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pane->get_stack()->set_visible_child(pane->get_identifier());
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}
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});
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// Provide the drag data
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drag_source->signal_prepare().connect([this](double, double) {
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drag_source->set_actions(Gdk::DragAction::MOVE);
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auto const paintable = Gtk::WidgetPaintable::create();
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paintable->set_widget(*this);
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drag_source->set_icon(paintable->get_current_image(), 0, 0);
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return Gdk::ContentProvider::create(value);
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}, false);
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drag_source->signal_drag_begin().connect([this](const Glib::RefPtr<Gdk::Drag>&) {
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this->set_opacity(0);
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}, false);
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// Pop out if dragged to an external location
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drag_source->signal_drag_cancel().connect([this](const Glib::RefPtr<Gdk::Drag>&, Gdk::DragCancelReason reason) {
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if(reason == Gdk::DragCancelReason::NO_TARGET) {
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this->pane->pop_out();
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return true;
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}
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this->set_opacity(1);
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return false;
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}, false);
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// Add a drop target to the button
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auto drop_target = Gtk::DropTarget::create(DockablePane::get_type(), Gdk::DragAction::MOVE);
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drop_target->set_actions(Gdk::DragAction::MOVE);
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drop_target->set_propagation_phase(Gtk::PropagationPhase::CAPTURE);
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this->add_controller(drop_target);
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// Process dropped buttons by inserting them after the current button
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drop_target->signal_drop().connect([this](const Glib::ValueBase& value, double x, double y) {
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const auto &widget = static_cast<const Glib::Value<DockablePane*>&>(value).get();
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if(widget) {
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if(auto pane = dynamic_cast<DockablePane*>(widget)) {
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if(pane->layout != this->pane->layout) {
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// If the pane is not in the same layout manager, reject
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return false;
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}
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auto switcher = dynamic_cast<DockStackSwitcher*>(this->get_parent());
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if(switcher) {
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auto *stack = switcher->get_stack();
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// Move the button to the new position
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pane->redock(stack);
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if(switcher->get_orientation() == Gtk::Orientation::HORIZONTAL) {
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if(x < static_cast<double>(this->get_allocated_width()) / 2) {
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pane->insert_before(*stack, *this->pane);
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} else {
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pane->insert_after(*stack, *this->pane);
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}
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} else if(switcher->get_orientation() == Gtk::Orientation::VERTICAL) {
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if(y < static_cast<double>(this->get_allocated_height()) / 2) {
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pane->insert_before(*stack, *this->pane);
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} else {
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pane->insert_after(*stack, *this->pane);
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}
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}
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switcher->update_buttons();
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}
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}
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}
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return true; // Drop OK
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}, false);
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this->update_active_style();
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}
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void DockButton::update_active_style() {
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if(this->pane->get_stack()->get_visible_child_name() == this->pane->get_identifier()) {
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this->add_css_class("checked");
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this->add_css_class("gpanthera-dock-button-active");
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this->set_active(true);
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} else {
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this->remove_css_class("checked");
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this->remove_css_class("gpanthera-dock-button-active");
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this->set_active(false);
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}
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}
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DockButton::~DockButton() {
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active_style_handler.disconnect();
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}
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void DockStackSwitcher::update_buttons() {
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// Clear the old buttons
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auto old_buttons = collect_children(*this);
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for(auto *button : old_buttons) {
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remove(*button);
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}
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DockButton* first_child = nullptr;
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for(auto *widget = stack->get_first_child(); widget; widget = widget->get_next_sibling()) {
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if(auto pane = dynamic_cast<DockablePane*>(widget)) {
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auto *button = Gtk::make_managed<DockButton>(pane);
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if(!first_child) {
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first_child = button;
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} else {
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button->set_group(*first_child);
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}
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if(pane->get_identifier() != Glib::ustring("")) {
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append(*button);
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}
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}
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}
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}
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void DockStack::add_pane(DockablePane &child) {
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child.redock(this);
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}
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void ContentManager::add_stack(ContentStack *stack) {
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this->stacks.push_back(stack);
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}
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void ContentManager::remove_stack(ContentStack *stack) {
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this->stacks.erase(std::ranges::remove(this->stacks, stack).begin(), this->stacks.end());
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}
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void BaseStack::add(Gtk::Widget &child, const Glib::ustring &name) {
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Gtk::Stack::add(child, name);
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signal_child_added.emit(&child);
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}
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void BaseStack::add(Gtk::Widget &child) {
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Gtk::Stack::add(child);
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signal_child_added.emit(&child);
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}
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void BaseStack::remove(Gtk::Widget &child) {
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Gtk::Stack::remove(child);
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signal_child_removed.emit(&child);
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}
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ContentStack::ContentStack(std::shared_ptr<ContentManager> content_manager, std::function<bool(ContentPage*)> detach_handler)
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: BaseStack(), content_manager(std::move(content_manager)) {
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this->set_name("gpanthera_content_stack");
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this->content_manager->add_stack(this);
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if(detach_handler) {
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this->detach_handler = detach_handler;
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this->signal_detach.connect([this](ContentPage *widget) {
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return this->detach_handler(widget);
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});
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}
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drop_target = Gtk::DropTarget::create(ContentPage::get_type(), Gdk::DragAction::MOVE);
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this->add_controller(drop_target);
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// Process dropped buttons
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drop_target->signal_drop().connect([this](const Glib::ValueBase &value, double x, double y) {
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const auto &widget = static_cast<const Glib::Value<ContentPage*>&>(value).get();
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if(auto page = dynamic_cast<ContentPage*>(widget)) {
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if(page->get_stack() == this && !this->get_first_child()->get_next_sibling()) {
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// Don't allow splitting if there are no more pages
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return false;
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}
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if(!(page->content_manager == this->content_manager)) {
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// If the page is not in the same content manager, reject
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return false;
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}
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double width = this->get_allocated_width(), height = this->get_allocated_height();
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// Split based on the drop position
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if(!(x < width / 4 || x > width * 3 / 4 || y < height / 4 || y > height * 3 / 4)) {
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if(page->get_stack() == this) {
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return false;
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}
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page->lose_visibility();
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// If the drop position is not at a quarter to the edges, move to the same stack
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this->add_page(*page);
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return true;
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}
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page->lose_visibility();
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auto new_stack = Gtk::make_managed<ContentStack>(this->content_manager, this->detach_handler);
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auto this_notebook = dynamic_cast<ContentNotebook*>(this->get_parent());
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auto new_switcher = Gtk::make_managed<ContentTabBar>(new_stack, this_notebook ? this_notebook->get_switcher()->get_orientation() : Gtk::Orientation::HORIZONTAL, this_notebook->get_switcher()->get_extra_child_function());
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auto new_notebook = Gtk::make_managed<ContentNotebook>(new_stack, new_switcher, this_notebook ? this_notebook->get_tab_position() : Gtk::PositionType::TOP);
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new_stack->add_page(*page);
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new_stack->set_visible_child(*page);
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if(x < width / 4) {
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this->make_paned(Gtk::Orientation::HORIZONTAL, Gtk::PackType::START);
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if(auto paned = dynamic_cast<Gtk::Paned*>(this->get_parent()->get_parent())) {
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paned->set_start_child(*new_notebook);
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}
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} else if(x > width * 3 / 4) {
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this->make_paned(Gtk::Orientation::HORIZONTAL, Gtk::PackType::END);
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if(auto paned = dynamic_cast<Gtk::Paned*>(this->get_parent()->get_parent())) {
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paned->set_end_child(*new_notebook);
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}
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} else if(y < height / 4) {
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this->make_paned(Gtk::Orientation::VERTICAL, Gtk::PackType::START);
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if(auto paned = dynamic_cast<Gtk::Paned*>(this->get_parent()->get_parent())) {
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paned->set_start_child(*new_notebook);
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}
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} else if(y > height * 3 / 4) {
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this->make_paned(Gtk::Orientation::VERTICAL, Gtk::PackType::END);
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if(auto paned = dynamic_cast<Gtk::Paned*>(this->get_parent()->get_parent())) {
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paned->set_end_child(*new_notebook);
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}
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}
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}
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return true; // Drop OK
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}, false);
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}
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std::function<bool(ContentPage*)> ContentStack::get_detach_handler() const {
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return this->detach_handler;
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}
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ContentNotebook::ContentNotebook(ContentStack *stack, ContentTabBar *switcher, Gtk::PositionType tab_position) : Gtk::Box(), stack(stack), switcher(switcher), tab_position(tab_position) {
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this->append(*stack);
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if(tab_position == Gtk::PositionType::TOP || tab_position == Gtk::PositionType::BOTTOM) {
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this->set_orientation(Gtk::Orientation::VERTICAL);
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if(tab_position == Gtk::PositionType::TOP) {
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this->prepend(*switcher);
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} else if(tab_position == Gtk::PositionType::BOTTOM) {
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this->append(*switcher);
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}
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} else if(tab_position == Gtk::PositionType::LEFT || tab_position == Gtk::PositionType::RIGHT) {
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this->set_orientation(Gtk::Orientation::HORIZONTAL);
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if(tab_position == Gtk::PositionType::LEFT) {
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this->prepend(*switcher);
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} else if(tab_position == Gtk::PositionType::RIGHT) {
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this->append(*switcher);
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}
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}
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}
555
void ContentStack::make_paned(Gtk::Orientation orientation, Gtk::PackType pack_type) {
557
auto *parent = this->get_parent();
558
if(auto notebook = dynamic_cast<ContentNotebook*>(parent)) {
559
auto *paned = Gtk::make_managed<Gtk::Paned>(orientation);
560
if(auto parent_paned = dynamic_cast<Gtk::Paned*>(notebook->get_parent())) {
561
if(parent_paned->get_start_child() == notebook) {
562
notebook->unparent();
563
parent_paned->set_start_child(*paned);
564
} else if(parent_paned->get_end_child() == notebook) {
565
notebook->unparent();
566
parent_paned->set_end_child(*paned);
567
}
568
} else if(auto box = dynamic_cast<Gtk::Box*>(notebook->get_parent())) {
569
auto previous_child = notebook->get_prev_sibling();
570
box->remove(*notebook);
571
if(previous_child) {
572
paned->insert_after(*box, *previous_child);
573
} else {
574
box->prepend(*paned);
575
}
576
}
577
if(pack_type == Gtk::PackType::START) {
578
paned->set_end_child(*notebook);
579
} else if(pack_type == Gtk::PackType::END) {
580
paned->set_start_child(*notebook);
581
}
582
}
583
}
584
ContentTabBar::ContentTabBar(ContentStack *stack, Gtk::Orientation orientation, std::function<Gtk::Widget*(Gtk::Widget*)> extra_child_function) : Gtk::Box(orientation), stack(stack), extra_child_function(extra_child_function) {
586
this->get_style_context()->add_class("gpanthera-content-tab-bar");
587
this->set_margin_top(0);
588
this->set_margin_bottom(0);
589
this->set_margin_start(0);
590
this->set_margin_end(0);
591
auto update_callback = [this](Gtk::Widget*) {
593
this->update_buttons();
594
};
595
this->property_accessible_role().set_value(Gtk::Accessible::Role::TAB_LIST);
596
stack->signal_child_added.connect(update_callback);
597
stack->signal_child_removed.connect(update_callback);
598
drop_target = Gtk::DropTarget::create(ContentPage::get_type(), Gdk::DragAction::MOVE);
599
this->add_controller(drop_target);
600
// Process dropped buttons
601
drop_target->signal_drop().connect([this](const Glib::ValueBase &value, double x, double y) {
602
if(const auto &widget = static_cast<const Glib::Value<ContentPage*>&>(value).get()) {
603
if(auto page = dynamic_cast<ContentPage*>(widget)) {
604
this->stack->add_page(*page);
605
}
606
}
607
return true; // Drop OK
609
}, false);
610
scrolled_window = Gtk::make_managed<Gtk::ScrolledWindow>();
612
auto viewport = Gtk::make_managed<Gtk::Viewport>(nullptr, nullptr);
613
tab_box = Gtk::make_managed<Gtk::Box>(orientation);
614
this->prepend(*scrolled_window);
615
scrolled_window->set_child(*viewport);
616
viewport->set_child(*tab_box);
617
this->set_orientation(orientation);
619
if(this->extra_child_function) {
621
this->append(*this->extra_child_function(this));
622
}
623
}
624
std::function<Gtk::Widget*(Gtk::Widget*)> ContentTabBar::get_extra_child_function() const {
626
return this->extra_child_function;
627
}
628
void ContentTabBar::set_orientation(Gtk::Orientation orientation) {
630
this->Gtk::Box::set_orientation(orientation);
631
if(orientation == Gtk::Orientation::HORIZONTAL) {
632
scrolled_window->set_policy(Gtk::PolicyType::AUTOMATIC, Gtk::PolicyType::NEVER);
633
tab_box->set_orientation(Gtk::Orientation::HORIZONTAL);
634
scrolled_window->set_hexpand(true);
635
scrolled_window->set_vexpand(false);
636
} else if(orientation == Gtk::Orientation::VERTICAL) {
637
scrolled_window->set_policy(Gtk::PolicyType::NEVER, Gtk::PolicyType::AUTOMATIC);
638
tab_box->set_orientation(Gtk::Orientation::VERTICAL);
639
scrolled_window->set_vexpand(true);
640
scrolled_window->set_hexpand(false);
641
}
642
}
643
ContentTabBar::~ContentTabBar() {
645
add_handler.disconnect();
646
remove_handler.disconnect();
647
}
648
ContentStack *ContentTabBar::get_stack() const {
650
return stack;
651
}
652
void ContentTabBar::update_buttons() {
654
// Clear the old buttons
655
auto old_buttons = collect_children(*this->tab_box);
656
for(auto *button : old_buttons) {
657
if(auto *button_button = dynamic_cast<Gtk::Button*>(button)) {
658
button_button->unset_child();
659
tab_box->remove(*button);
660
}
661
}
662
ContentTab* first_child = nullptr;
663
for(auto *widget = stack->get_first_child(); widget; widget = widget->get_next_sibling()) {
664
if(auto page = dynamic_cast<ContentPage*>(widget)) {
665
auto *button = Gtk::make_managed<ContentTab>(page);
666
if(!first_child) {
667
first_child = button;
668
} else {
669
button->set_group(*first_child);
670
}
671
this->tab_box->append(*button);
672
}
673
}
674
}
675
void ContentStack::add_page(ContentPage &child) {
677
child.redock(this);
678
}
679
void ContentStack::remove_with_paned() {
681
if(auto paned = dynamic_cast<Gtk::Paned*>(this->get_parent()->get_parent())) {
682
Gtk::Widget *child = nullptr;
683
if(this->get_parent() == paned->get_start_child()) {
684
child = paned->get_end_child();
685
} else if(this->get_parent() == paned->get_end_child()) {
686
child = paned->get_start_child();
687
} else {
688
return;
689
}
690
g_object_ref(child->gobj()); // Prevent the child from being automatically deleted
692
paned->property_start_child().reset_value(); // Some hacks because the Gtkmm API isn't complete; it doesn't have an unset_start_child() or unset_end_child()
693
paned->property_end_child().reset_value();
694
if(child) {
696
if(auto parent_paned = dynamic_cast<Gtk::Paned*>(paned->get_parent())) {
697
if(parent_paned->get_start_child() == paned) {
698
parent_paned->set_start_child(*child);
699
} else if(parent_paned->get_end_child() == paned) {
700
parent_paned->set_end_child(*child);
701
}
702
} else if(auto box = dynamic_cast<Gtk::Box*>(paned->get_parent())) {
703
child->insert_after(*box, *paned);
704
paned->unparent();
705
g_object_unref(child->gobj());
706
}
707
}
708
}
709
}
710
ContentTab::ContentTab(ContentPage *page) : Gtk::ToggleButton(), page(page) {
712
this->set_child(*page->get_tab_widget());
713
this->property_accessible_role().set_value(Gtk::Accessible::Role::TAB);
714
this->set_halign(Gtk::Align::CENTER);
715
this->set_valign(Gtk::Align::CENTER);
716
this->get_style_context()->add_class("toggle");
717
this->get_style_context()->add_class("gpanthera-content-tab");
718
// Add/remove CSS classes when the pane is shown/hidden
719
active_style_handler = this->page->get_stack()->property_visible_child().signal_changed().connect([this]() {
720
this->update_active_style();
721
});
722
drag_source = Gtk::DragSource::create();
723
drag_source->set_exclusive(false);
724
// This is to prevent the click handler from taking over grabbing the button
725
drag_source->set_propagation_phase(Gtk::PropagationPhase::CAPTURE);
726
value.init(ContentPage::get_type());
727
value.set(page);
728
// Add the drag source to the button
729
this->add_controller(drag_source);
730
this->signal_clicked().connect([this, page]() {
731
page->get_stack()->set_visible_child(*page);
732
update_active_style();
733
});
734
// Switch tabs on depress
735
auto gesture_click = Gtk::GestureClick::create();
736
gesture_click->set_button(1);
737
this->add_controller(gesture_click);
738
gesture_click->signal_pressed().connect([this, page](int num_presses, double x, double y) {
739
page->get_stack()->set_visible_child(*page);
740
update_active_style();
741
});
742
// Provide the drag data
743
drag_source->signal_prepare().connect([this](double, double) {
744
drag_source->set_actions(Gdk::DragAction::MOVE);
745
auto const paintable = Gtk::WidgetPaintable::create();
746
paintable->set_widget(*this);
747
drag_source->set_icon(paintable->get_current_image(), 0, 0);
748
return Gdk::ContentProvider::create(value);
749
}, false);
750
update_active_style();
751
drag_source->signal_drag_begin().connect([this](const Glib::RefPtr<Gdk::Drag>&) {
752
this->set_opacity(0);
753
}, false);
754
drop_target = Gtk::DropTarget::create(ContentPage::get_type(), Gdk::DragAction::MOVE);
755
// Process dropped buttons by inserting them after the current button
756
drop_target->signal_drop().connect([this](const Glib::ValueBase &value, double x, double y) {
757
const auto &widget = static_cast<const Glib::Value<ContentPage*>&>(value).get();
758
if(widget) {
760
if(auto page = dynamic_cast<ContentPage*>(widget)) {
761
if(page->content_manager != this->page->content_manager) {
762
// If the pane is not in the same layout manager, reject
763
return false;
764
}
765
auto switcher = dynamic_cast<ContentTabBar*>(this->get_parent()->get_parent()->get_parent()->get_parent());
766
if(switcher) {
767
auto *stack = switcher->get_stack();
768
// Move the button to the new position
769
page->redock(stack);
770
if(switcher->get_orientation() == Gtk::Orientation::HORIZONTAL) {
771
if(x < static_cast<double>(this->get_allocated_width()) / 2) {
772
page->insert_before(*stack, *this->page);
773
} else {
774
page->insert_after(*stack, *this->page);
775
}
776
} else if(switcher->get_orientation() == Gtk::Orientation::VERTICAL) {
777
if(y < static_cast<double>(this->get_allocated_height()) / 2) {
778
page->insert_before(*stack, *this->page);
779
} else {
780
page->insert_after(*stack, *this->page);
781
}
782
}
783
switcher->update_buttons();
785
}
786
}
787
}
788
return true; // Drop OK
790
}, false);
791
this->add_controller(drop_target);
792
// Pop out if dragged to an external location
793
drag_cancel_handler = drag_source->signal_drag_cancel().connect([this](const Glib::RefPtr<Gdk::Drag>&, Gdk::DragCancelReason reason) {
794
if(reason == Gdk::DragCancelReason::NO_TARGET) {
795
auto stack = dynamic_cast<ContentStack*>(this->page->get_stack());
796
bool result = stack->signal_detach.emit(this->page);
797
if(!result) {
798
this->set_opacity(1);
799
}
800
return result;
801
}
802
this->set_opacity(1);
803
return false;
804
}, false);
805
drag_end_handler = drag_source->signal_drag_end().connect([this](const Glib::RefPtr<Gdk::Drag>&, bool drop_ok) {
806
if(drop_ok) {
807
this->set_opacity(1);
808
}
809
}, false);
810
// Provide a context menu
812
context_menu = Gio::Menu::create();
813
auto action_group = Gio::SimpleActionGroup::create();
814
this->insert_action_group("win", action_group);
815
auto close_action = Gio::SimpleAction::create("close");
817
close_action->signal_activate().connect([this](const Glib::VariantBase&) {
818
if(!this->page->signal_close.emit()) {
819
if(this->page->get_next_sibling()) {
820
this->page->get_stack()->set_visible_child(*this->page->get_next_sibling());
821
} else if(this->page->get_prev_sibling()) {
822
this->page->get_stack()->set_visible_child(*this->page->get_prev_sibling());
823
}
824
this->page->redock(nullptr);
825
}
826
});
827
action_group->add_action(close_action);
828
context_menu->append(_("Close"), "win.close");
829
auto close_all_action = Gio::SimpleAction::create("close-all");
831
close_all_action->signal_activate().connect([this](const Glib::VariantBase&) {
832
for(auto page : collect_children(*this->page->get_stack())) {
833
if(auto content_page = dynamic_cast<ContentPage*>(page)) {
834
if(!content_page->signal_close.emit()) {
835
content_page->redock(nullptr);
836
}
837
}
838
}
839
});
840
action_group->add_action(close_all_action);
841
context_menu->append(_("Close all"), "win.close-all");
842
auto close_others_action = Gio::SimpleAction::create("close-others");
844
close_others_action->signal_activate().connect([this](const Glib::VariantBase&) {
845
for(auto page : collect_children(*this->page->get_stack())) {
846
if(auto content_page = dynamic_cast<ContentPage*>(page)) {
847
if(content_page != this->page && !content_page->signal_close.emit()) {
848
content_page->redock(nullptr);
849
}
850
}
851
}
852
});
853
action_group->add_action(close_others_action);
854
context_menu->append(_("Close others"), "win.close-others");
855
auto detach_action = Gio::SimpleAction::create("detach");
857
detach_action->signal_activate().connect([this](const Glib::VariantBase&) {
858
auto stack = dynamic_cast<ContentStack*>(this->page->get_stack());
859
bool result = stack->signal_detach.emit(this->page);
860
});
861
action_group->add_action(detach_action);
862
context_menu->append(_("New window"), "win.detach");
863
// TODO: Add more actions: "New window", "Split left", "Split right", "Split top", "Split bottom", "Close all", "Close others", "Close to the right", "Close to the left"
865
this->insert_action_group("win", action_group);
866
// Attach the context menu to the button
867
auto context_menu_signal = add_context_menu(*this);
868
context_menu_signal.connect([this, action_group](double x, double y) {
869
if(this->context_menu) {
870
auto popover = Gtk::make_managed<Gtk::PopoverMenu>();
871
popover->set_menu_model(context_menu);
872
popover->set_parent(*this);
873
popover->set_has_arrow(false);
874
popover->set_halign(Gtk::Align::START);
875
popover->set_pointing_to(Gdk::Rectangle(x, y, 1, 1));
876
popover->popup();
877
}
878
});
879
}
880
void ContentTab::update_active_style() {
882
if(this->page->get_stack()->get_visible_child() == this->page) {
883
this->add_css_class("checked");
884
this->add_css_class("gpanthera-dock-button-active");
885
this->set_active(true);
886
} else {
887
this->remove_css_class("checked");
888
this->remove_css_class("gpanthera-dock-button-active");
889
this->set_active(false);
890
}
891
}
892
ContentTab::~ContentTab() {
894
active_style_handler.disconnect();
895
drag_end_handler.disconnect();
896
drag_cancel_handler.disconnect();
897
}
898
Gtk::Widget *ContentPage::get_tab_widget() const {
900
return this->tab_widget;
901
}
902
ContentStack *ContentPage::get_stack() const {
904
return this->stack;
905
}
906
void ContentPage::lose_visibility() {
908
if(this->get_next_sibling()) {
909
this->get_stack()->set_visible_child(*this->get_next_sibling());
910
} else if(this->get_prev_sibling()) {
911
this->get_stack()->set_visible_child(*this->get_prev_sibling());
912
}
913
}
914
void ContentPage::redock(ContentStack *stack) {
916
if(stack == nullptr) {
917
if(this->stack) {
918
this->stack->remove(*this);
919
if(dynamic_cast<ContentNotebook*>(this->stack->get_parent()) && !this->stack->get_first_child()) {
920
this->stack->remove_with_paned();
921
}
922
}
923
auto old_stack = this->stack;
924
if(old_stack) {
925
if(!old_stack->get_first_child()) {
926
old_stack->signal_leave_empty.emit();
927
}
928
}
929
this->stack = nullptr;
930
this->last_stack = nullptr;
931
return;
932
}
933
// Check if the stack is now empty, in which case we should remove it
934
if(this->stack == stack) {
935
return;
936
}
937
if(this->stack != nullptr) {
938
if(dynamic_cast<ContentNotebook*>(this->stack->get_parent()) && (!this->stack->get_first_child() || (this->stack->get_first_child() == this && !this->stack->get_first_child()->get_next_sibling()))) {
939
this->stack->remove(*this);
940
this->stack->remove_with_paned();
941
} else if(this->get_parent() == this->stack) {
942
this->stack->remove(*this);
943
}
944
}
945
auto old_stack = this->stack;
946
this->stack = stack;
947
this->last_stack = stack;
948
this->stack->add(*this);
949
if(old_stack) {
950
if(!old_stack->get_first_child()) {
951
old_stack->signal_leave_empty.emit();
952
}
953
}
954
}
955
ContentPage::ContentPage(std::shared_ptr<ContentManager> content_manager, ContentStack *stack, Gtk::Widget *child, Gtk::Widget *tab_widget) :
957
Gtk::Overlay(), content_manager(std::move(content_manager)), child(child), tab_widget(tab_widget) {
958
this->set_name("gpanthera_content_page");
959
this->set_child(*child);
960
this->set_tab_widget(tab_widget);
961
this->set_margin_top(0);
962
this->set_margin_bottom(0);
963
this->set_margin_start(0);
964
this->set_margin_end(0);
965
if(stack) {
966
stack->add_page(*this);
967
this->content_manager->add_stack(this->stack);
968
}
969
}
970
ContentManager::ContentManager() : Glib::ObjectBase("ContentManager") {
972
}
973
void ContentPage::set_tab_widget(Gtk::Widget *tab_widget) {
975
this->tab_widget = tab_widget;
976
}
977
ContentWindow::ContentWindow(ContentNotebook *notebook) : notebook(notebook) {
979
this->set_child(*notebook);
980
this->set_decorated(true);
981
this->set_resizable(true);
982
}
983
Gtk::PositionType ContentNotebook::get_tab_position() const {
985
return this->tab_position;
986
}
987
ContentTabBar *ContentNotebook::get_switcher() const {
989
return this->switcher;
990
}
991
ContentStack *ContentNotebook::get_stack() const {
993
return this->stack;
994
}
995
} // namespace gPanthera
996