paulxstretch/deps/juce/modules/juce_gui_basics/menus/juce_MenuBarComponent.cpp
essej 25bd5d8adb git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce
subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"
2022-04-18 17:51:22 -04:00

452 lines
13 KiB
C++

/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2020 - Raw Material Software Limited
JUCE is an open source library subject to commercial or open-source
licensing.
By using JUCE, you agree to the terms of both the JUCE 6 End-User License
Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
End User License Agreement: www.juce.com/juce-6-licence
Privacy Policy: www.juce.com/juce-privacy-policy
Or: You may also use this code under the terms of the GPL v3 (see
www.gnu.org/licenses).
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
DISCLAIMED.
==============================================================================
*/
namespace juce
{
class MenuBarComponent::AccessibleItemComponent : public Component
{
public:
AccessibleItemComponent (MenuBarComponent& comp, const String& menuItemName)
: owner (comp),
name (menuItemName)
{
setInterceptsMouseClicks (false, false);
}
const String& getName() const noexcept { return name; }
private:
std::unique_ptr<AccessibilityHandler> createAccessibilityHandler() override
{
class ComponentHandler : public AccessibilityHandler
{
public:
explicit ComponentHandler (AccessibleItemComponent& item)
: AccessibilityHandler (item,
AccessibilityRole::menuItem,
getAccessibilityActions (item)),
itemComponent (item)
{
}
String getTitle() const override { return itemComponent.name; }
private:
static AccessibilityActions getAccessibilityActions (AccessibleItemComponent& item)
{
auto showMenu = [&item] { item.owner.showMenu (item.owner.indexOfItemComponent (&item)); };
return AccessibilityActions().addAction (AccessibilityActionType::focus,
[&item] { item.owner.setItemUnderMouse (item.owner.indexOfItemComponent (&item)); })
.addAction (AccessibilityActionType::press, showMenu)
.addAction (AccessibilityActionType::showMenu, showMenu);
}
AccessibleItemComponent& itemComponent;
};
return std::make_unique<ComponentHandler> (*this);
}
MenuBarComponent& owner;
const String name;
};
MenuBarComponent::MenuBarComponent (MenuBarModel* m)
{
setRepaintsOnMouseActivity (true);
setWantsKeyboardFocus (false);
setMouseClickGrabsKeyboardFocus (false);
setModel (m);
}
MenuBarComponent::~MenuBarComponent()
{
setModel (nullptr);
Desktop::getInstance().removeGlobalMouseListener (this);
}
MenuBarModel* MenuBarComponent::getModel() const noexcept
{
return model;
}
void MenuBarComponent::setModel (MenuBarModel* const newModel)
{
if (model != newModel)
{
if (model != nullptr)
model->removeListener (this);
model = newModel;
if (model != nullptr)
model->addListener (this);
repaint();
menuBarItemsChanged (nullptr);
}
}
//==============================================================================
void MenuBarComponent::paint (Graphics& g)
{
const auto isMouseOverBar = (currentPopupIndex >= 0 || itemUnderMouse >= 0 || isMouseOver());
getLookAndFeel().drawMenuBarBackground (g, getWidth(), getHeight(), isMouseOverBar, *this);
if (model == nullptr)
return;
for (size_t i = 0; i < itemComponents.size(); ++i)
{
const auto& itemComponent = itemComponents[i];
const auto itemBounds = itemComponent->getBounds();
Graphics::ScopedSaveState ss (g);
g.setOrigin (itemBounds.getX(), 0);
g.reduceClipRegion (0, 0, itemBounds.getWidth(), itemBounds.getHeight());
getLookAndFeel().drawMenuBarItem (g,
itemBounds.getWidth(),
itemBounds.getHeight(),
(int) i,
itemComponent->getName(),
(int) i == itemUnderMouse,
(int) i == currentPopupIndex,
isMouseOverBar,
*this);
}
}
void MenuBarComponent::resized()
{
int x = 0;
for (size_t i = 0; i < itemComponents.size(); ++i)
{
auto& itemComponent = itemComponents[i];
auto w = getLookAndFeel().getMenuBarItemWidth (*this, (int) i, itemComponent->getName());
itemComponent->setBounds (x, 0, w, getHeight());
x += w;
}
}
int MenuBarComponent::getItemAt (Point<int> p)
{
for (size_t i = 0; i < itemComponents.size(); ++i)
if (itemComponents[i]->getBounds().contains (p) && reallyContains (p, true))
return (int) i;
return -1;
}
void MenuBarComponent::repaintMenuItem (int index)
{
if (isPositiveAndBelow (index, (int) itemComponents.size()))
{
auto itemBounds = itemComponents[(size_t) index]->getBounds();
repaint (itemBounds.getX() - 2,
0,
itemBounds.getWidth() + 4,
itemBounds.getHeight());
}
}
void MenuBarComponent::setItemUnderMouse (int index)
{
if (itemUnderMouse == index)
return;
repaintMenuItem (itemUnderMouse);
itemUnderMouse = index;
repaintMenuItem (itemUnderMouse);
if (isPositiveAndBelow (itemUnderMouse, (int) itemComponents.size()))
if (auto* handler = itemComponents[(size_t) itemUnderMouse]->getAccessibilityHandler())
handler->grabFocus();
}
void MenuBarComponent::setOpenItem (int index)
{
if (currentPopupIndex != index)
{
if (currentPopupIndex < 0 && index >= 0)
model->handleMenuBarActivate (true);
else if (currentPopupIndex >= 0 && index < 0)
model->handleMenuBarActivate (false);
repaintMenuItem (currentPopupIndex);
currentPopupIndex = index;
repaintMenuItem (currentPopupIndex);
auto& desktop = Desktop::getInstance();
if (index >= 0)
desktop.addGlobalMouseListener (this);
else
desktop.removeGlobalMouseListener (this);
}
}
void MenuBarComponent::updateItemUnderMouse (Point<int> p)
{
setItemUnderMouse (getItemAt (p));
}
void MenuBarComponent::showMenu (int index)
{
if (index != currentPopupIndex)
{
PopupMenu::dismissAllActiveMenus();
menuBarItemsChanged (nullptr);
setOpenItem (index);
setItemUnderMouse (index);
if (isPositiveAndBelow (index, (int) itemComponents.size()))
{
const auto& itemComponent = itemComponents[(size_t) index];
auto m = model->getMenuForIndex (itemUnderMouse, itemComponent->getName());
if (m.lookAndFeel == nullptr)
m.setLookAndFeel (&getLookAndFeel());
auto itemBounds = itemComponent->getBounds();
m.showMenuAsync (PopupMenu::Options().withTargetComponent (this)
.withTargetScreenArea (localAreaToGlobal (itemBounds))
.withMinimumWidth (itemBounds.getWidth()),
[this, index] (int result) { menuDismissed (index, result); });
}
}
}
void MenuBarComponent::menuDismissed (int topLevelIndex, int itemId)
{
topLevelIndexClicked = topLevelIndex;
postCommandMessage (itemId);
}
void MenuBarComponent::handleCommandMessage (int commandId)
{
updateItemUnderMouse (getMouseXYRelative());
if (currentPopupIndex == topLevelIndexClicked)
setOpenItem (-1);
if (commandId != 0 && model != nullptr)
model->menuItemSelected (commandId, topLevelIndexClicked);
}
//==============================================================================
void MenuBarComponent::mouseEnter (const MouseEvent& e)
{
if (e.eventComponent == this)
updateItemUnderMouse (e.getPosition());
}
void MenuBarComponent::mouseExit (const MouseEvent& e)
{
if (e.eventComponent == this)
updateItemUnderMouse (e.getPosition());
}
void MenuBarComponent::mouseDown (const MouseEvent& e)
{
if (currentPopupIndex < 0)
{
updateItemUnderMouse (e.getEventRelativeTo (this).getPosition());
currentPopupIndex = -2;
showMenu (itemUnderMouse);
}
}
void MenuBarComponent::mouseDrag (const MouseEvent& e)
{
const auto item = getItemAt (e.getEventRelativeTo (this).getPosition());
if (item >= 0)
showMenu (item);
}
void MenuBarComponent::mouseUp (const MouseEvent& e)
{
const auto e2 = e.getEventRelativeTo (this);
updateItemUnderMouse (e2.getPosition());
if (itemUnderMouse < 0 && getLocalBounds().contains (e2.x, e2.y))
{
setOpenItem (-1);
PopupMenu::dismissAllActiveMenus();
}
}
void MenuBarComponent::mouseMove (const MouseEvent& e)
{
const auto e2 = e.getEventRelativeTo (this);
if (lastMousePos != e2.getPosition())
{
if (currentPopupIndex >= 0)
{
const auto item = getItemAt (e2.getPosition());
if (item >= 0)
showMenu (item);
}
else
{
updateItemUnderMouse (e2.getPosition());
}
lastMousePos = e2.getPosition();
}
}
bool MenuBarComponent::keyPressed (const KeyPress& key)
{
const auto numMenus = (int) itemComponents.size();
if (numMenus > 0)
{
const auto currentIndex = jlimit (0, numMenus - 1, currentPopupIndex);
if (key.isKeyCode (KeyPress::leftKey))
{
showMenu ((currentIndex + numMenus - 1) % numMenus);
return true;
}
if (key.isKeyCode (KeyPress::rightKey))
{
showMenu ((currentIndex + 1) % numMenus);
return true;
}
}
return false;
}
void MenuBarComponent::menuBarItemsChanged (MenuBarModel*)
{
StringArray newNames;
if (model != nullptr)
newNames = model->getMenuBarNames();
auto itemsHaveChanged = [this, &newNames]
{
if ((int) itemComponents.size() != newNames.size())
return true;
for (size_t i = 0; i < itemComponents.size(); ++i)
if (itemComponents[i]->getName() != newNames[(int) i])
return true;
return false;
}();
if (itemsHaveChanged)
{
updateItemComponents (newNames);
repaint();
resized();
}
}
void MenuBarComponent::updateItemComponents (const StringArray& menuNames)
{
itemComponents.clear();
for (const auto& name : menuNames)
{
itemComponents.push_back (std::make_unique<AccessibleItemComponent> (*this, name));
addAndMakeVisible (*itemComponents.back());
}
}
int MenuBarComponent::indexOfItemComponent (AccessibleItemComponent* itemComponent) const
{
const auto iter = std::find_if (itemComponents.cbegin(), itemComponents.cend(),
[itemComponent] (const std::unique_ptr<AccessibleItemComponent>& c) { return c.get() == itemComponent; });
if (iter != itemComponents.cend())
return (int) std::distance (itemComponents.cbegin(), iter);
jassertfalse;
return -1;
}
void MenuBarComponent::menuCommandInvoked (MenuBarModel*, const ApplicationCommandTarget::InvocationInfo& info)
{
if (model == nullptr || (info.commandFlags & ApplicationCommandInfo::dontTriggerVisualFeedback) != 0)
return;
for (size_t i = 0; i < itemComponents.size(); ++i)
{
const auto menu = model->getMenuForIndex ((int) i, itemComponents[i]->getName());
if (menu.containsCommandItem (info.commandID))
{
setItemUnderMouse ((int) i);
startTimer (200);
break;
}
}
}
void MenuBarComponent::timerCallback()
{
stopTimer();
updateItemUnderMouse (getMouseXYRelative());
}
//==============================================================================
std::unique_ptr<AccessibilityHandler> MenuBarComponent::createAccessibilityHandler()
{
struct MenuBarComponentAccessibilityHandler : public AccessibilityHandler
{
explicit MenuBarComponentAccessibilityHandler (MenuBarComponent& menuBarComponent)
: AccessibilityHandler (menuBarComponent, AccessibilityRole::menuBar)
{
}
AccessibleState getCurrentState() const override { return AccessibleState().withIgnored(); }
};
return std::make_unique<MenuBarComponentAccessibilityHandler> (*this);
}
} // namespace juce