296 lines
13 KiB
C
296 lines
13 KiB
C
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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) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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//==============================================================================
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/**
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A resizable window with a title bar and maximise, minimise and close buttons.
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This subclass of ResizableWindow creates a fairly standard type of window with
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a title bar and various buttons. The name of the component is shown in the
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title bar, and an icon can optionally be specified with setIcon().
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All the methods available to a ResizableWindow are also available to this,
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so it can easily be made resizable, minimised, maximised, etc.
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It's not advisable to add child components directly to a DocumentWindow: put them
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inside your content component instead. And overriding methods like resized(), moved(), etc
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is also not recommended - instead override these methods for your content component.
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(If for some obscure reason you do need to override these methods, always remember to
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call the super-class's resized() method too, otherwise it'll fail to lay out the window
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decorations correctly).
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You can also automatically add a menu bar to the window, using the setMenuBar()
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method.
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@see ResizableWindow, DialogWindow
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@tags{GUI}
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*/
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class JUCE_API DocumentWindow : public ResizableWindow
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{
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public:
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//==============================================================================
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/** The set of available button-types that can be put on the title bar.
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@see setTitleBarButtonsRequired
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*/
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enum TitleBarButtons
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{
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minimiseButton = 1,
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maximiseButton = 2,
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closeButton = 4,
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/** A combination of all the buttons above. */
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allButtons = 7
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};
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//==============================================================================
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/** Creates a DocumentWindow.
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@param name the name to give the component - this is also
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the title shown at the top of the window. To change
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this later, use setName()
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@param backgroundColour the colour to use for filling the window's background.
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@param requiredButtons specifies which of the buttons (close, minimise, maximise)
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should be shown on the title bar. This value is a bitwise
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combination of values from the TitleBarButtons enum. Note
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that it can be "allButtons" to get them all. You
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can change this later with the setTitleBarButtonsRequired()
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method, which can also specify where they are positioned.
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@param addToDesktop if true, the window will be automatically added to the
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desktop; if false, you can use it as a child component
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@see TitleBarButtons
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*/
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DocumentWindow (const String& name,
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Colour backgroundColour,
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int requiredButtons,
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bool addToDesktop = true);
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/** Destructor.
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If a content component has been set with setContentOwned(), it will be deleted.
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*/
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~DocumentWindow() override;
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//==============================================================================
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/** Changes the component's name.
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(This is overridden from Component::setName() to cause a repaint, as
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the name is what gets drawn across the window's title bar).
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*/
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void setName (const String& newName) override;
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/** Sets an icon to show in the title bar, next to the title.
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A copy is made internally of the image, so the caller can delete the
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image after calling this. If an empty Image is passed-in, any existing icon
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will be removed.
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*/
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void setIcon (const Image& imageToUse);
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/** Changes the height of the title-bar. */
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void setTitleBarHeight (int newHeight);
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/** Returns the current title bar height. */
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int getTitleBarHeight() const;
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/** Changes the set of title-bar buttons being shown.
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@param requiredButtons specifies which of the buttons (close, minimise, maximise)
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should be shown on the title bar. This value is a bitwise
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combination of values from the TitleBarButtons enum. Note
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that it can be "allButtons" to get them all.
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@param positionTitleBarButtonsOnLeft if true, the buttons should go at the
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left side of the bar; if false, they'll be placed at the right
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*/
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void setTitleBarButtonsRequired (int requiredButtons,
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bool positionTitleBarButtonsOnLeft);
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/** Sets whether the title should be centred within the window.
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If true, the title text is shown in the middle of the title-bar; if false,
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it'll be shown at the left of the bar.
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*/
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void setTitleBarTextCentred (bool textShouldBeCentred);
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//==============================================================================
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/** Creates a menu inside this window.
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@param menuBarModel this specifies a MenuBarModel that should be used to
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generate the contents of a menu bar that will be placed
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just below the title bar, and just above any content
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component. If this value is a nullptr, any existing menu bar
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will be removed from the component; if it is not a nullptr,
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one will be added if it's required.
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@param menuBarHeight the height of the menu bar component, if one is needed. Pass a value of zero
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or less to use the look-and-feel's default size.
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*/
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void setMenuBar (MenuBarModel* menuBarModel,
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int menuBarHeight = 0);
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/** Returns the current menu bar component, or null if there isn't one.
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This is probably a MenuBarComponent, unless a custom one has been set using
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setMenuBarComponent().
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*/
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Component* getMenuBarComponent() const noexcept;
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/** Replaces the current menu bar with a custom component.
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The component will be owned and deleted by the document window.
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*/
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void setMenuBarComponent (Component* newMenuBarComponent);
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//==============================================================================
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/** This method is called when the user tries to close the window.
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This is triggered by the user clicking the close button, or using some other
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OS-specific key shortcut or OS menu for getting rid of a window.
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If the window is just a pop-up, you should override this closeButtonPressed()
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method and make it delete the window in whatever way is appropriate for your
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app. E.g. you might just want to call "delete this".
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If your app is centred around this window such that the whole app should quit when
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the window is closed, then you will probably want to use this method as an opportunity
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to call JUCEApplicationBase::quit(), and leave the window to be deleted later by your
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JUCEApplicationBase::shutdown() method. (Doing it this way means that your window will
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still get cleaned-up if the app is quit by some other means (e.g. a cmd-Q on the mac
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or closing it via the taskbar icon on Windows).
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(Note that the DocumentWindow class overrides Component::userTriedToCloseWindow() and
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redirects it to call this method, so any methods of closing the window that are
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caught by userTriedToCloseWindow() will also end up here).
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*/
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virtual void closeButtonPressed();
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/** Callback that is triggered when the minimise button is pressed.
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The default implementation of this calls ResizableWindow::setMinimised(), but
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you can override it to do more customised behaviour.
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*/
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virtual void minimiseButtonPressed();
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/** Callback that is triggered when the maximise button is pressed, or when the
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title-bar is double-clicked.
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The default implementation of this calls ResizableWindow::setFullScreen(), but
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you can override it to do more customised behaviour.
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*/
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virtual void maximiseButtonPressed();
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//==============================================================================
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/** Returns the close button, (or nullptr if there isn't one). */
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Button* getCloseButton() const noexcept;
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/** Returns the minimise button, (or nullptr if there isn't one). */
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Button* getMinimiseButton() const noexcept;
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/** Returns the maximise button, (or nullptr if there isn't one). */
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Button* getMaximiseButton() const noexcept;
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//==============================================================================
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/** A set of colour IDs to use to change the colour of various aspects of the window.
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These constants can be used either via the Component::setColour(), or LookAndFeel::setColour()
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methods.
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@see Component::setColour, Component::findColour, LookAndFeel::setColour, LookAndFeel::findColour
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*/
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enum ColourIds
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{
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textColourId = 0x1005701, /**< The colour to draw any text with. It's up to the look
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and feel class how this is used. */
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};
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//==============================================================================
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/** This abstract base class is implemented by LookAndFeel classes to provide
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window drawing functionality.
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*/
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struct JUCE_API LookAndFeelMethods
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{
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virtual ~LookAndFeelMethods() = default;
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virtual void drawDocumentWindowTitleBar (DocumentWindow&,
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Graphics&, int w, int h,
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int titleSpaceX, int titleSpaceW,
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const Image* icon,
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bool drawTitleTextOnLeft) = 0;
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virtual Button* createDocumentWindowButton (int buttonType) = 0;
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virtual void positionDocumentWindowButtons (DocumentWindow&,
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int titleBarX, int titleBarY, int titleBarW, int titleBarH,
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Button* minimiseButton,
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Button* maximiseButton,
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Button* closeButton,
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bool positionTitleBarButtonsOnLeft) = 0;
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};
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//==============================================================================
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#ifndef DOXYGEN
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/** @internal */
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void paint (Graphics&) override;
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/** @internal */
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void resized() override;
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/** @internal */
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void lookAndFeelChanged() override;
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/** @internal */
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BorderSize<int> getBorderThickness() override;
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/** @internal */
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BorderSize<int> getContentComponentBorder() override;
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/** @internal */
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void mouseDoubleClick (const MouseEvent&) override;
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/** @internal */
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void userTriedToCloseWindow() override;
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/** @internal */
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void activeWindowStatusChanged() override;
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/** @internal */
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int getDesktopWindowStyleFlags() const override;
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/** @internal */
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void parentHierarchyChanged() override;
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/** @internal */
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Rectangle<int> getTitleBarArea();
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#endif
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private:
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//==============================================================================
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int titleBarHeight = 26, menuBarHeight = 24, requiredButtons;
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bool positionTitleBarButtonsOnLeft, drawTitleTextCentred = true;
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std::unique_ptr<Button> titleBarButtons [3];
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Image titleBarIcon;
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std::unique_ptr<Component> menuBar;
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MenuBarModel* menuBarModel = nullptr;
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class ButtonListenerProxy;
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std::unique_ptr<ButtonListenerProxy> buttonListener;
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void repaintTitleBar();
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (DocumentWindow)
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};
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} // namespace juce
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