- initial version
git-svn-id: http://moon:8086/svn/software/trunk/projects/RBM@14 b431acfa-c32f-4a4a-93f1-934dc6c82436
This commit is contained in:
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found at: www.gnu.org/licenses
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.juce.com for more information.
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==============================================================================
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*/
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MenuBarComponent::MenuBarComponent (MenuBarModel* model_)
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: model (nullptr),
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itemUnderMouse (-1),
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currentPopupIndex (-1),
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topLevelIndexClicked (0)
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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 (model_);
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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 bool isMouseOverBar = currentPopupIndex >= 0 || itemUnderMouse >= 0 || isMouseOver();
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getLookAndFeel().drawMenuBarBackground (g,
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getWidth(),
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getHeight(),
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isMouseOverBar,
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*this);
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if (model != nullptr)
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{
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for (int i = 0; i < menuNames.size(); ++i)
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{
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Graphics::ScopedSaveState ss (g);
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g.setOrigin (xPositions [i], 0);
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g.reduceClipRegion (0, 0, xPositions[i + 1] - xPositions[i], getHeight());
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getLookAndFeel().drawMenuBarItem (g,
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xPositions[i + 1] - xPositions[i],
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getHeight(),
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i,
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menuNames[i],
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i == itemUnderMouse,
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i == currentPopupIndex,
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isMouseOverBar,
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*this);
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}
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}
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}
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void MenuBarComponent::resized()
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{
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xPositions.clear();
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int x = 0;
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xPositions.add (x);
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for (int i = 0; i < menuNames.size(); ++i)
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{
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x += getLookAndFeel().getMenuBarItemWidth (*this, i, menuNames[i]);
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xPositions.add (x);
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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 (int i = 0; i < xPositions.size(); ++i)
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if (p.x >= xPositions[i] && p.x < xPositions[i + 1])
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return reallyContains (p, true) ? i : -1;
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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, xPositions.size()))
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{
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const int x1 = xPositions [index];
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const int x2 = xPositions [index + 1];
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repaint (x1 - 2, 0, x2 - x1 + 4, getHeight());
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}
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}
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void MenuBarComponent::setItemUnderMouse (const int index)
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{
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if (itemUnderMouse != index)
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{
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repaintMenuItem (itemUnderMouse);
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itemUnderMouse = index;
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repaintMenuItem (itemUnderMouse);
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}
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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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repaintMenuItem (currentPopupIndex);
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currentPopupIndex = index;
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repaintMenuItem (currentPopupIndex);
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Desktop& 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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{
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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 (index >= 0)
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{
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PopupMenu m (model->getMenuForIndex (itemUnderMouse,
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menuNames [itemUnderMouse]));
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if (m.lookAndFeel == nullptr)
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m.setLookAndFeel (&getLookAndFeel());
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const Rectangle<int> itemPos (xPositions [index], 0, xPositions [index + 1] - xPositions [index], getHeight());
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m.showMenuAsync (PopupMenu::Options().withTargetComponent (this)
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.withTargetScreenArea (localAreaToGlobal (itemPos))
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.withMinimumWidth (itemPos.getWidth()),
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ModalCallbackFunction::forComponent (menuBarMenuDismissedCallback, this, index));
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}
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}
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}
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void MenuBarComponent::menuBarMenuDismissedCallback (int result, MenuBarComponent* bar, int topLevelIndex)
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{
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if (bar != nullptr)
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bar->menuDismissed (topLevelIndex, result);
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}
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void MenuBarComponent::menuDismissed (int topLevelIndex, int itemId)
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{
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topLevelIndexClicked = topLevelIndex;
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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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const Point<int> mousePos (getMouseXYRelative());
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updateItemUnderMouse (mousePos);
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if (currentPopupIndex == topLevelIndexClicked)
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setOpenItem (-1);
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if (commandId != 0 && model != nullptr)
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model->menuItemSelected (commandId, topLevelIndexClicked);
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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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const MouseEvent e2 (e.getEventRelativeTo (this));
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updateItemUnderMouse (e2.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 MouseEvent e2 (e.getEventRelativeTo (this));
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const int 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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void MenuBarComponent::mouseUp (const MouseEvent& e)
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{
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const MouseEvent 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 MouseEvent 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 int 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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bool used = false;
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const int numMenus = menuNames.size();
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const int currentIndex = jlimit (0, menuNames.size() - 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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used = true;
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}
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else if (key.isKeyCode (KeyPress::rightKey))
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{
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showMenu ((currentIndex + 1) % numMenus);
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used = true;
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}
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return used;
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}
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void MenuBarComponent::menuBarItemsChanged (MenuBarModel* /*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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if (newNames != menuNames)
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{
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menuNames = 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::menuCommandInvoked (MenuBarModel* /*menuBarModel*/,
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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 (int i = 0; i < menuNames.size(); ++i)
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{
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const PopupMenu menu (model->getMenuForIndex (i, menuNames [i]));
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if (menu.containsCommandItem (info.commandID))
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{
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setItemUnderMouse (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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