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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#include <ranges>
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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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void ContentStack::disable_children() {
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auto children = collect_children(*this);
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for(auto *child : children) {
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child->set_can_target(false);
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}
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}
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void ContentStack::enable_children() {
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auto children = collect_children(*this);
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for(auto *child : children) {
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child->set_can_target(true);
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}
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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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// Some widgets (such as webviews) will consume anything dropped on their ancestors. We have
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// to disable all child widgets to ensure the drop can be caught by this widget.
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drop_target->signal_enter().connect([this](double x, double y) {
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disable_children();
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return Gdk::DragAction::MOVE;
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}, false);
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drop_target->signal_leave().connect([this]() {
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enable_children();
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}, false);
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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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enable_children();
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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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}
509
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) {
563
this->append(*stack);
564
if(tab_position == Gtk::PositionType::TOP || tab_position == Gtk::PositionType::BOTTOM) {
565
this->set_orientation(Gtk::Orientation::VERTICAL);
566
if(tab_position == Gtk::PositionType::TOP) {
567
this->prepend(*switcher);
568
} else if(tab_position == Gtk::PositionType::BOTTOM) {
569
this->append(*switcher);
570
}
571
} else if(tab_position == Gtk::PositionType::LEFT || tab_position == Gtk::PositionType::RIGHT) {
572
this->set_orientation(Gtk::Orientation::HORIZONTAL);
573
if(tab_position == Gtk::PositionType::LEFT) {
574
this->prepend(*switcher);
575
} else if(tab_position == Gtk::PositionType::RIGHT) {
576
this->append(*switcher);
577
}
578
}
579
}
580
void ContentStack::make_paned(Gtk::Orientation orientation, Gtk::PackType pack_type) {
582
auto *parent = this->get_parent();
583
if(auto notebook = dynamic_cast<ContentNotebook*>(parent)) {
584
auto *paned = Gtk::make_managed<Gtk::Paned>(orientation);
585
if(auto parent_paned = dynamic_cast<Gtk::Paned*>(notebook->get_parent())) {
586
if(parent_paned->get_start_child() == notebook) {
587
notebook->unparent();
588
parent_paned->set_start_child(*paned);
589
} else if(parent_paned->get_end_child() == notebook) {
590
notebook->unparent();
591
parent_paned->set_end_child(*paned);
592
}
593
} else if(auto box = dynamic_cast<Gtk::Box*>(notebook->get_parent())) {
594
auto previous_child = notebook->get_prev_sibling();
595
box->remove(*notebook);
596
if(previous_child) {
597
paned->insert_after(*box, *previous_child);
598
} else {
599
box->prepend(*paned);
600
}
601
}
602
if(pack_type == Gtk::PackType::START) {
603
paned->set_end_child(*notebook);
604
} else if(pack_type == Gtk::PackType::END) {
605
paned->set_start_child(*notebook);
606
}
607
}
608
}
609
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) {
611
this->get_style_context()->add_class("gpanthera-content-tab-bar");
612
this->set_margin_top(0);
613
this->set_margin_bottom(0);
614
this->set_margin_start(0);
615
this->set_margin_end(0);
616
auto update_callback = [this](Gtk::Widget*) {
618
this->update_buttons();
619
};
620
this->property_accessible_role().set_value(Gtk::Accessible::Role::TAB_LIST);
621
stack->signal_child_added.connect(update_callback);
622
stack->signal_child_removed.connect(update_callback);
623
drop_target = Gtk::DropTarget::create(ContentPage::get_type(), Gdk::DragAction::MOVE);
624
this->add_controller(drop_target);
625
// Process dropped buttons
626
drop_target->signal_drop().connect([this](const Glib::ValueBase &value, double x, double y) {
627
if(const auto &widget = static_cast<const Glib::Value<ContentPage*>&>(value).get()) {
628
if(auto page = dynamic_cast<ContentPage*>(widget)) {
629
this->stack->add_page(*page);
630
}
631
}
632
return true; // Drop OK
634
}, false);
635
scrolled_window = Gtk::make_managed<Gtk::ScrolledWindow>();
637
auto viewport = Gtk::make_managed<Gtk::Viewport>(nullptr, nullptr);
638
tab_box = Gtk::make_managed<Gtk::Box>(orientation);
639
this->prepend(*scrolled_window);
640
scrolled_window->set_child(*viewport);
641
viewport->set_child(*tab_box);
642
this->set_orientation(orientation);
644
if(this->extra_child_function) {
646
this->append(*this->extra_child_function(this));
647
}
648
}
649
std::function<Gtk::Widget*(Gtk::Widget*)> ContentTabBar::get_extra_child_function() const {
651
return this->extra_child_function;
652
}
653
void ContentTabBar::set_orientation(Gtk::Orientation orientation) {
655
this->Gtk::Box::set_orientation(orientation);
656
if(orientation == Gtk::Orientation::HORIZONTAL) {
657
scrolled_window->set_policy(Gtk::PolicyType::AUTOMATIC, Gtk::PolicyType::NEVER);
658
tab_box->set_orientation(Gtk::Orientation::HORIZONTAL);
659
scrolled_window->set_hexpand(true);
660
scrolled_window->set_vexpand(false);
661
} else if(orientation == Gtk::Orientation::VERTICAL) {
662
scrolled_window->set_policy(Gtk::PolicyType::NEVER, Gtk::PolicyType::AUTOMATIC);
663
tab_box->set_orientation(Gtk::Orientation::VERTICAL);
664
scrolled_window->set_vexpand(true);
665
scrolled_window->set_hexpand(false);
666
}
667
}
668
ContentTabBar::~ContentTabBar() {
670
add_handler.disconnect();
671
remove_handler.disconnect();
672
}
673
ContentStack *ContentTabBar::get_stack() const {
675
return stack;
676
}
677
void ContentTabBar::update_buttons() {
679
// Clear the old buttons
680
auto old_buttons = collect_children(*this->tab_box);
681
for(auto *button : old_buttons) {
682
if(auto *button_button = dynamic_cast<Gtk::Button*>(button)) {
683
button_button->unset_child();
684
tab_box->remove(*button);
685
}
686
}
687
ContentTab* first_child = nullptr;
688
for(auto *widget = stack->get_first_child(); widget; widget = widget->get_next_sibling()) {
689
if(auto page = dynamic_cast<ContentPage*>(widget)) {
690
auto *button = Gtk::make_managed<ContentTab>(page);
691
if(!first_child) {
692
first_child = button;
693
} else {
694
button->set_group(*first_child);
695
}
696
this->tab_box->append(*button);
697
}
698
}
699
}
700
void ContentStack::add_page(ContentPage &child) {
702
child.redock(this);
703
}
704
void ContentStack::remove_with_paned() {
706
if(auto paned = dynamic_cast<Gtk::Paned*>(this->get_parent()->get_parent())) {
707
Gtk::Widget *child = nullptr;
708
if(this->get_parent() == paned->get_start_child()) {
709
child = paned->get_end_child();
710
} else if(this->get_parent() == paned->get_end_child()) {
711
child = paned->get_start_child();
712
} else {
713
return;
714
}
715
g_object_ref(child->gobj()); // Prevent the child from being automatically deleted
717
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()
718
paned->property_end_child().reset_value();
719
if(child) {
721
if(auto parent_paned = dynamic_cast<Gtk::Paned*>(paned->get_parent())) {
722
if(parent_paned->get_start_child() == paned) {
723
parent_paned->set_start_child(*child);
724
} else if(parent_paned->get_end_child() == paned) {
725
parent_paned->set_end_child(*child);
726
}
727
} else if(auto box = dynamic_cast<Gtk::Box*>(paned->get_parent())) {
728
child->insert_after(*box, *paned);
729
paned->unparent();
730
g_object_unref(child->gobj());
731
}
732
}
733
}
734
}
735
ContentTab::ContentTab(ContentPage *page) : Gtk::ToggleButton(), page(page) {
737
this->set_child(*page->get_tab_widget());
738
this->property_accessible_role().set_value(Gtk::Accessible::Role::TAB);
739
this->set_halign(Gtk::Align::CENTER);
740
this->set_valign(Gtk::Align::CENTER);
741
this->get_style_context()->add_class("toggle");
742
this->get_style_context()->add_class("gpanthera-content-tab");
743
// Add/remove CSS classes when the pane is shown/hidden
744
active_style_handler = this->page->get_stack()->property_visible_child().signal_changed().connect([this]() {
745
this->update_active_style();
746
});
747
drag_source = Gtk::DragSource::create();
748
drag_source->set_exclusive(false);
749
// This is to prevent the click handler from taking over grabbing the button
750
drag_source->set_propagation_phase(Gtk::PropagationPhase::CAPTURE);
751
value.init(ContentPage::get_type());
752
value.set(page);
753
// Add the drag source to the button
754
this->add_controller(drag_source);
755
this->signal_clicked().connect([this, page]() {
756
page->get_stack()->set_visible_child(*page);
757
update_active_style();
758
});
759
// Switch tabs on depress
760
auto gesture_click = Gtk::GestureClick::create();
761
gesture_click->set_button(1);
762
this->add_controller(gesture_click);
763
gesture_click->signal_pressed().connect([this, page](int num_presses, double x, double y) {
764
page->get_stack()->set_visible_child(*page);
765
update_active_style();
766
});
767
// Provide the drag data
768
drag_source->signal_prepare().connect([this](double, double) {
769
drag_source->set_actions(Gdk::DragAction::MOVE);
770
auto const paintable = Gtk::WidgetPaintable::create();
771
paintable->set_widget(*this);
772
drag_source->set_icon(paintable->get_current_image(), 0, 0);
773
return Gdk::ContentProvider::create(value);
774
}, false);
775
update_active_style();
776
drag_source->signal_drag_begin().connect([this](const Glib::RefPtr<Gdk::Drag>&) {
777
this->set_opacity(0);
778
}, false);
779
drop_target = Gtk::DropTarget::create(ContentPage::get_type(), Gdk::DragAction::MOVE);
780
// Process dropped buttons by inserting them after the current button
781
drop_target->signal_drop().connect([this](const Glib::ValueBase &value, double x, double y) {
782
const auto &widget = static_cast<const Glib::Value<ContentPage*>&>(value).get();
783
if(widget) {
785
if(auto page = dynamic_cast<ContentPage*>(widget)) {
786
if(page->content_manager != this->page->content_manager) {
787
// If the pane is not in the same layout manager, reject
788
return false;
789
}
790
auto switcher = dynamic_cast<ContentTabBar*>(this->get_parent()->get_parent()->get_parent()->get_parent());
791
if(switcher) {
792
auto *stack = switcher->get_stack();
793
// Move the button to the new position
794
page->redock(stack);
795
if(switcher->get_orientation() == Gtk::Orientation::HORIZONTAL) {
796
if(x < static_cast<double>(this->get_allocated_width()) / 2) {
797
page->insert_before(*stack, *this->page);
798
} else {
799
page->insert_after(*stack, *this->page);
800
}
801
} else if(switcher->get_orientation() == Gtk::Orientation::VERTICAL) {
802
if(y < static_cast<double>(this->get_allocated_height()) / 2) {
803
page->insert_before(*stack, *this->page);
804
} else {
805
page->insert_after(*stack, *this->page);
806
}
807
}
808
switcher->update_buttons();
810
}
811
}
812
}
813
return true; // Drop OK
815
}, false);
816
this->add_controller(drop_target);
817
// Pop out if dragged to an external location
818
drag_cancel_handler = drag_source->signal_drag_cancel().connect([this](const Glib::RefPtr<Gdk::Drag>&, Gdk::DragCancelReason reason) {
819
if(reason == Gdk::DragCancelReason::NO_TARGET) {
820
auto stack = dynamic_cast<ContentStack*>(this->page->get_stack());
821
bool result = stack->signal_detach.emit(this->page);
822
if(!result) {
823
this->set_opacity(1);
824
}
825
return result;
826
}
827
this->set_opacity(1);
828
return false;
829
}, false);
830
drag_end_handler = drag_source->signal_drag_end().connect([this](const Glib::RefPtr<Gdk::Drag>&, bool drop_ok) {
831
if(drop_ok) {
832
this->set_opacity(1);
833
}
834
}, false);
835
// Provide a context menu
837
context_menu = Gio::Menu::create();
838
auto action_group = Gio::SimpleActionGroup::create();
839
this->insert_action_group("win", action_group);
840
auto close_action = Gio::SimpleAction::create("close");
842
close_action->signal_activate().connect([this](const Glib::VariantBase&) {
843
if(!this->page->signal_close.emit()) {
844
if(this->page->get_next_sibling()) {
845
this->page->get_stack()->set_visible_child(*this->page->get_next_sibling());
846
} else if(this->page->get_prev_sibling()) {
847
this->page->get_stack()->set_visible_child(*this->page->get_prev_sibling());
848
}
849
this->page->redock(nullptr);
850
}
851
});
852
action_group->add_action(close_action);
853
context_menu->append(_("Close"), "win.close");
854
auto close_all_action = Gio::SimpleAction::create("close-all");
856
close_all_action->signal_activate().connect([this](const Glib::VariantBase&) {
857
for(auto page : collect_children(*this->page->get_stack())) {
858
if(auto content_page = dynamic_cast<ContentPage*>(page)) {
859
if(!content_page->signal_close.emit()) {
860
content_page->redock(nullptr);
861
}
862
}
863
}
864
});
865
action_group->add_action(close_all_action);
866
context_menu->append(_("Close all"), "win.close-all");
867
auto close_others_action = Gio::SimpleAction::create("close-others");
869
close_others_action->signal_activate().connect([this](const Glib::VariantBase&) {
870
for(auto page : collect_children(*this->page->get_stack())) {
871
if(auto content_page = dynamic_cast<ContentPage*>(page)) {
872
if(content_page != this->page && !content_page->signal_close.emit()) {
873
content_page->redock(nullptr);
874
}
875
}
876
}
877
});
878
action_group->add_action(close_others_action);
879
context_menu->append(_("Close others"), "win.close-others");
880
auto detach_action = Gio::SimpleAction::create("detach");
882
detach_action->signal_activate().connect([this](const Glib::VariantBase&) {
883
auto stack = dynamic_cast<ContentStack*>(this->page->get_stack());
884
bool result = stack->signal_detach.emit(this->page);
885
});
886
action_group->add_action(detach_action);
887
context_menu->append(_("New window"), "win.detach");
888
// 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"
890
this->insert_action_group("win", action_group);
891
// Attach the context menu to the button
892
auto context_menu_signal = add_context_menu(*this);
893
context_menu_signal.connect([this, action_group](double x, double y) {
894
if(this->context_menu) {
895
auto popover = Gtk::make_managed<Gtk::PopoverMenu>();
896
popover->set_menu_model(context_menu);
897
popover->set_parent(*this);
898
popover->set_has_arrow(false);
899
popover->set_halign(Gtk::Align::START);
900
popover->set_pointing_to(Gdk::Rectangle(x, y, 1, 1));
901
popover->popup();
902
}
903
});
904
}
905
void ContentTab::update_active_style() {
907
if(this->page->get_stack()->get_visible_child() == this->page) {
908
this->add_css_class("checked");
909
this->add_css_class("gpanthera-dock-button-active");
910
this->set_active(true);
911
} else {
912
this->remove_css_class("checked");
913
this->remove_css_class("gpanthera-dock-button-active");
914
this->set_active(false);
915
}
916
}
917
ContentTab::~ContentTab() {
919
active_style_handler.disconnect();
920
drag_end_handler.disconnect();
921
drag_cancel_handler.disconnect();
922
}
923
Gtk::Widget *ContentPage::get_tab_widget() const {
925
return this->tab_widget;
926
}
927
ContentStack *ContentPage::get_stack() const {
929
return this->stack;
930
}
931
void ContentPage::lose_visibility() {
933
if(this->get_next_sibling()) {
934
this->get_stack()->set_visible_child(*this->get_next_sibling());
935
} else if(this->get_prev_sibling()) {
936
this->get_stack()->set_visible_child(*this->get_prev_sibling());
937
}
938
}
939
void ContentPage::redock(ContentStack *stack) {
941
if(stack == nullptr) {
942
if(this->stack) {
943
this->stack->remove(*this);
944
if(dynamic_cast<ContentNotebook*>(this->stack->get_parent()) && !this->stack->get_first_child()) {
945
this->stack->remove_with_paned();
946
}
947
}
948
auto old_stack = this->stack;
949
if(old_stack) {
950
if(!old_stack->get_first_child()) {
951
old_stack->signal_leave_empty.emit();
952
}
953
}
954
this->stack = nullptr;
955
this->last_stack = nullptr;
956
return;
957
}
958
// Check if the stack is now empty, in which case we should remove it
959
if(this->stack == stack) {
960
return;
961
}
962
if(this->stack != nullptr) {
963
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()))) {
964
this->stack->remove(*this);
965
this->stack->remove_with_paned();
966
} else if(this->get_parent() == this->stack) {
967
this->stack->remove(*this);
968
}
969
}
970
auto old_stack = this->stack;
971
this->stack = stack;
972
this->last_stack = stack;
973
this->stack->add(*this);
974
if(old_stack) {
975
if(!old_stack->get_first_child()) {
976
old_stack->signal_leave_empty.emit();
977
}
978
}
979
}
980
ContentPage::ContentPage(std::shared_ptr<ContentManager> content_manager, ContentStack *stack, Gtk::Widget *child, Gtk::Widget *tab_widget) :
982
Gtk::Overlay(), content_manager(std::move(content_manager)), child(child), tab_widget(tab_widget) {
983
this->set_name("gpanthera_content_page");
984
this->set_child(*child);
985
this->set_tab_widget(tab_widget);
986
this->set_margin_top(0);
987
this->set_margin_bottom(0);
988
this->set_margin_start(0);
989
this->set_margin_end(0);
990
if(stack) {
991
stack->add_page(*this);
992
this->content_manager->add_stack(this->stack);
993
}
994
}
995
ContentManager::ContentManager() : Glib::ObjectBase("ContentManager") {
997
}
998
void ContentPage::set_tab_widget(Gtk::Widget *tab_widget) {
1000
this->tab_widget = tab_widget;
1001
}
1002
ContentWindow::ContentWindow(ContentNotebook *notebook) : notebook(notebook) {
1004
this->set_child(*notebook);
1005
this->set_decorated(true);
1006
this->set_resizable(true);
1007
}
1008
Gtk::PositionType ContentNotebook::get_tab_position() const {
1010
return this->tab_position;
1011
}
1012
ContentTabBar *ContentNotebook::get_switcher() const {
1014
return this->switcher;
1015
}
1016
ContentStack *ContentNotebook::get_stack() const {
1018
return this->stack;
1019
}
1020
} // namespace gPanthera
1021