mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-09 23:34:20 +00:00
472 lines
14 KiB
C++
472 lines
14 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework.
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Copyright (c) Raw Material Software Limited
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JUCE is an open source framework subject to commercial or open source
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licensing.
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By downloading, installing, or using the JUCE framework, or combining the
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JUCE framework with any other source code, object code, content or any other
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copyrightable work, you agree to the terms of the JUCE End User Licence
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Agreement, and all incorporated terms including the JUCE Privacy Policy and
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the JUCE Website Terms of Service, as applicable, which will bind you. If you
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do not agree to the terms of these agreements, we will not license the JUCE
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framework to you, and you must discontinue the installation or download
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process and cease use of the JUCE framework.
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JUCE End User Licence Agreement: https://juce.com/legal/juce-8-licence/
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JUCE Privacy Policy: https://juce.com/juce-privacy-policy
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JUCE Website Terms of Service: https://juce.com/juce-website-terms-of-service/
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Or:
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You may also use this code under the terms of the AGPLv3:
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https://www.gnu.org/licenses/agpl-3.0.en.html
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THE JUCE FRAMEWORK IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL
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WARRANTIES, WHETHER EXPRESSED OR IMPLIED, INCLUDING WARRANTY OF
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MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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class MenuBarComponent::AccessibleItemComponent final : public Component
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{
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public:
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AccessibleItemComponent (MenuBarComponent& comp, const String& menuItemName)
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: owner (comp),
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name (menuItemName)
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{
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setInterceptsMouseClicks (false, false);
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}
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const String& getName() const noexcept { return name; }
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private:
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std::unique_ptr<AccessibilityHandler> createAccessibilityHandler() override
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{
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class ComponentHandler final : public AccessibilityHandler
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{
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public:
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explicit ComponentHandler (AccessibleItemComponent& item)
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: AccessibilityHandler (item,
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AccessibilityRole::menuItem,
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getAccessibilityActions (item)),
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itemComponent (item)
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{
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}
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String getTitle() const override { return itemComponent.name; }
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private:
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static AccessibilityActions getAccessibilityActions (AccessibleItemComponent& item)
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{
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auto showMenu = [&item] { item.owner.showMenu (item.owner.indexOfItemComponent (&item)); };
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return AccessibilityActions().addAction (AccessibilityActionType::focus,
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[&item] { item.owner.setItemUnderMouse (item.owner.indexOfItemComponent (&item)); })
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.addAction (AccessibilityActionType::press, showMenu)
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.addAction (AccessibilityActionType::showMenu, showMenu);
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}
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AccessibleItemComponent& itemComponent;
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};
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return std::make_unique<ComponentHandler> (*this);
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}
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MenuBarComponent& owner;
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const String name;
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};
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MenuBarComponent::MenuBarComponent (MenuBarModel* m)
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{
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setRepaintsOnMouseActivity (true);
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setWantsKeyboardFocus (false);
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setMouseClickGrabsKeyboardFocus (false);
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setModel (m);
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}
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MenuBarComponent::~MenuBarComponent()
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{
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setModel (nullptr);
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Desktop::getInstance().removeGlobalMouseListener (this);
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}
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MenuBarModel* MenuBarComponent::getModel() const noexcept
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{
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return model;
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}
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void MenuBarComponent::setModel (MenuBarModel* const newModel)
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{
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if (model != newModel)
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{
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if (model != nullptr)
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model->removeListener (this);
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model = newModel;
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if (model != nullptr)
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model->addListener (this);
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repaint();
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menuBarItemsChanged (nullptr);
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}
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}
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//==============================================================================
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void MenuBarComponent::paint (Graphics& g)
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{
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const auto isMouseOverBar = (currentPopupIndex >= 0 || itemUnderMouse >= 0 || isMouseOver());
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getLookAndFeel().drawMenuBarBackground (g, getWidth(), getHeight(), isMouseOverBar, *this);
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if (model == nullptr)
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return;
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for (size_t i = 0; i < itemComponents.size(); ++i)
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{
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const auto& itemComponent = itemComponents[i];
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const auto itemBounds = itemComponent->getBounds();
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Graphics::ScopedSaveState ss (g);
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g.setOrigin (itemBounds.getX(), 0);
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g.reduceClipRegion (0, 0, itemBounds.getWidth(), itemBounds.getHeight());
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getLookAndFeel().drawMenuBarItem (g,
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itemBounds.getWidth(),
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itemBounds.getHeight(),
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(int) i,
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itemComponent->getName(),
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(int) i == itemUnderMouse,
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(int) i == currentPopupIndex,
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isMouseOverBar,
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*this);
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}
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}
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void MenuBarComponent::resized()
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{
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int x = 0;
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for (size_t i = 0; i < itemComponents.size(); ++i)
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{
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auto& itemComponent = itemComponents[i];
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auto w = getLookAndFeel().getMenuBarItemWidth (*this, (int) i, itemComponent->getName());
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itemComponent->setBounds (x, 0, w, getHeight());
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x += w;
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}
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}
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int MenuBarComponent::getItemAt (Point<int> p)
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{
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for (size_t i = 0; i < itemComponents.size(); ++i)
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if (itemComponents[i]->getBounds().contains (p) && reallyContains (p, true))
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return (int) i;
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return -1;
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}
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void MenuBarComponent::repaintMenuItem (int index)
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{
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if (isPositiveAndBelow (index, (int) itemComponents.size()))
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{
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auto itemBounds = itemComponents[(size_t) index]->getBounds();
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repaint (itemBounds.getX() - 2,
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0,
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itemBounds.getWidth() + 4,
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itemBounds.getHeight());
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}
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}
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void MenuBarComponent::setItemUnderMouse (int index)
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{
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if (itemUnderMouse == index)
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return;
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repaintMenuItem (itemUnderMouse);
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itemUnderMouse = index;
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repaintMenuItem (itemUnderMouse);
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if (isPositiveAndBelow (itemUnderMouse, (int) itemComponents.size()))
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if (auto* handler = itemComponents[(size_t) itemUnderMouse]->getAccessibilityHandler())
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handler->grabFocus();
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}
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void MenuBarComponent::setOpenItem (int index)
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{
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if (currentPopupIndex != index)
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{
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if (currentPopupIndex < 0 && index >= 0)
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model->handleMenuBarActivate (true);
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else if (currentPopupIndex >= 0 && index < 0)
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model->handleMenuBarActivate (false);
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repaintMenuItem (currentPopupIndex);
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currentPopupIndex = index;
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repaintMenuItem (currentPopupIndex);
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auto& desktop = Desktop::getInstance();
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if (index >= 0)
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desktop.addGlobalMouseListener (this);
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else
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desktop.removeGlobalMouseListener (this);
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}
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}
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void MenuBarComponent::updateItemUnderMouse (Point<int> p)
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{
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setItemUnderMouse (getItemAt (p));
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}
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void MenuBarComponent::showMenu (int index)
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{
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if (index == currentPopupIndex)
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return;
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const auto needToOpenNewSubMenu = isPositiveAndBelow (index, (int) itemComponents.size());
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if (needToOpenNewSubMenu)
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++numActiveMenus;
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PopupMenu::dismissAllActiveMenus();
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menuBarItemsChanged (nullptr);
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setOpenItem (index);
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setItemUnderMouse (index);
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if (needToOpenNewSubMenu)
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{
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const auto& itemComponent = itemComponents[(size_t) index];
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auto m = model->getMenuForIndex (itemUnderMouse, itemComponent->getName());
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if (m.lookAndFeel == nullptr)
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m.setLookAndFeel (&getLookAndFeel());
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auto itemBounds = itemComponent->getBounds();
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const auto callback = [ref = SafePointer<MenuBarComponent> (this), index] (int result)
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{
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if (ref != nullptr)
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ref->menuDismissed (index, result);
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};
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m.showMenuAsync (PopupMenu::Options().withTargetComponent (this)
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.withTargetScreenArea (localAreaToGlobal (itemBounds))
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.withMinimumWidth (itemBounds.getWidth()),
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callback);
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}
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}
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void MenuBarComponent::menuDismissed (int topLevelIndex, int itemId)
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{
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topLevelIndexDismissed = topLevelIndex;
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--numActiveMenus;
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postCommandMessage (itemId);
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}
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void MenuBarComponent::handleCommandMessage (int commandId)
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{
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updateItemUnderMouse (getMouseXYRelative());
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if (numActiveMenus == 0)
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setOpenItem (-1);
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if (commandId != 0 && model != nullptr)
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model->menuItemSelected (commandId, topLevelIndexDismissed);
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}
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//==============================================================================
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void MenuBarComponent::mouseEnter (const MouseEvent& e)
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{
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if (e.eventComponent == this)
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updateItemUnderMouse (e.getPosition());
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}
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void MenuBarComponent::mouseExit (const MouseEvent& e)
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{
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if (e.eventComponent == this)
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updateItemUnderMouse (e.getPosition());
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}
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void MenuBarComponent::mouseDown (const MouseEvent& e)
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{
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if (currentPopupIndex < 0)
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{
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updateItemUnderMouse (e.getEventRelativeTo (this).getPosition());
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currentPopupIndex = -2;
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showMenu (itemUnderMouse);
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}
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}
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void MenuBarComponent::mouseDrag (const MouseEvent& e)
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{
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const auto item = getItemAt (e.getEventRelativeTo (this).getPosition());
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if (item >= 0)
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showMenu (item);
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}
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void MenuBarComponent::mouseUp (const MouseEvent& e)
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{
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const auto e2 = e.getEventRelativeTo (this);
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updateItemUnderMouse (e2.getPosition());
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if (itemUnderMouse < 0 && getLocalBounds().contains (e2.x, e2.y))
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{
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setOpenItem (-1);
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PopupMenu::dismissAllActiveMenus();
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}
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}
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void MenuBarComponent::mouseMove (const MouseEvent& e)
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{
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const auto e2 = e.getEventRelativeTo (this);
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if (lastMousePos != e2.getPosition())
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{
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if (currentPopupIndex >= 0)
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{
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const auto item = getItemAt (e2.getPosition());
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if (item >= 0)
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showMenu (item);
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}
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else
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{
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updateItemUnderMouse (e2.getPosition());
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}
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lastMousePos = e2.getPosition();
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}
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}
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bool MenuBarComponent::keyPressed (const KeyPress& key)
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{
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const auto numMenus = (int) itemComponents.size();
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if (numMenus > 0)
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{
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const auto currentIndex = jlimit (0, numMenus - 1, currentPopupIndex);
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if (key.isKeyCode (KeyPress::leftKey))
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{
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showMenu ((currentIndex + numMenus - 1) % numMenus);
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return true;
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}
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if (key.isKeyCode (KeyPress::rightKey))
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{
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showMenu ((currentIndex + 1) % numMenus);
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return true;
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}
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}
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return false;
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}
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void MenuBarComponent::menuBarItemsChanged (MenuBarModel*)
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{
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StringArray newNames;
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if (model != nullptr)
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newNames = model->getMenuBarNames();
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auto itemsHaveChanged = [this, &newNames]
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{
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if ((int) itemComponents.size() != newNames.size())
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return true;
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for (size_t i = 0; i < itemComponents.size(); ++i)
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if (itemComponents[i]->getName() != newNames[(int) i])
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return true;
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return false;
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}();
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if (itemsHaveChanged)
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{
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updateItemComponents (newNames);
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repaint();
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resized();
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}
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}
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void MenuBarComponent::updateItemComponents (const StringArray& menuNames)
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{
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itemComponents.clear();
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for (const auto& name : menuNames)
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{
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itemComponents.push_back (std::make_unique<AccessibleItemComponent> (*this, name));
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addAndMakeVisible (*itemComponents.back());
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}
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}
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int MenuBarComponent::indexOfItemComponent (AccessibleItemComponent* itemComponent) const
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{
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const auto iter = std::find_if (itemComponents.cbegin(), itemComponents.cend(),
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[itemComponent] (const std::unique_ptr<AccessibleItemComponent>& c) { return c.get() == itemComponent; });
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if (iter != itemComponents.cend())
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return (int) std::distance (itemComponents.cbegin(), iter);
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jassertfalse;
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return -1;
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}
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void MenuBarComponent::menuCommandInvoked (MenuBarModel*, const ApplicationCommandTarget::InvocationInfo& info)
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{
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if (model == nullptr || (info.commandFlags & ApplicationCommandInfo::dontTriggerVisualFeedback) != 0)
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return;
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for (size_t i = 0; i < itemComponents.size(); ++i)
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{
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const auto menu = model->getMenuForIndex ((int) i, itemComponents[i]->getName());
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if (menu.containsCommandItem (info.commandID))
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{
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setItemUnderMouse ((int) i);
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startTimer (200);
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break;
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}
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}
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}
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void MenuBarComponent::timerCallback()
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{
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stopTimer();
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updateItemUnderMouse (getMouseXYRelative());
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}
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//==============================================================================
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std::unique_ptr<AccessibilityHandler> MenuBarComponent::createAccessibilityHandler()
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{
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struct MenuBarComponentAccessibilityHandler final : public AccessibilityHandler
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{
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explicit MenuBarComponentAccessibilityHandler (MenuBarComponent& menuBarComponent)
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: AccessibilityHandler (menuBarComponent, AccessibilityRole::menuBar)
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{
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}
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AccessibleState getCurrentState() const override { return AccessibleState().withIgnored(); }
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};
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return std::make_unique<MenuBarComponentAccessibilityHandler> (*this);
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}
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} // namespace juce
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