mirror of
https://github.com/juce-framework/JUCE.git
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225 lines
8.2 KiB
C++
225 lines
8.2 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-7 by Raw Material Software ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the
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GNU General Public License, as published by the Free Software Foundation;
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either version 2 of the License, or (at your option) any later version.
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JUCE is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with JUCE; if not, visit www.gnu.org/licenses or write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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Boston, MA 02111-1307 USA
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------------------------------------------------------------------------------
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If you'd like to release a closed-source product which uses JUCE, commercial
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licenses are also available: visit www.rawmaterialsoftware.com/juce for
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more information.
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==============================================================================
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*/
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#ifndef __JUCE_DESKTOP_JUCEHEADER__
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#define __JUCE_DESKTOP_JUCEHEADER__
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#include "juce_Component.h"
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#include "../../application/juce_DeletedAtShutdown.h"
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#include "../../events/juce_Timer.h"
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#include "../../events/juce_AsyncUpdater.h"
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#include "../../../juce_core/containers/juce_SortedSet.h"
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//==============================================================================
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/**
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Classes can implement this interface and register themselves with the Desktop class
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to receive callbacks when the currently focused component changes.
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@see Desktop::addFocusChangeListener, Desktop::removeFocusChangeListener
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*/
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class JUCE_API FocusChangeListener
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{
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public:
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/** Destructor. */
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virtual ~FocusChangeListener() {}
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/** Callback to indicate that the currently focused component has changed. */
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virtual void globalFocusChanged (Component* focusedComponent) = 0;
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};
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//==============================================================================
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/**
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Describes and controls aspects of the computer's desktop.
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*/
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class JUCE_API Desktop : private DeletedAtShutdown,
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private Timer,
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private AsyncUpdater
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{
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public:
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//==============================================================================
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/** There's only one dektop object, and this method will return it.
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*/
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static Desktop& getInstance();
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//==============================================================================
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/** Returns a list of the positions of all the monitors available.
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The first rectangle in the list will be the main monitor area.
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If clippedToWorkArea is true, it will exclude any areas like the taskbar on Windows,
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or the menu bar on Mac. If clippedToWorkArea is false, the entire monitor area is returned.
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*/
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const RectangleList getAllMonitorDisplayAreas (const bool clippedToWorkArea = true) const;
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/** Returns the position and size of the main monitor.
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If clippedToWorkArea is true, it will exclude any areas like the taskbar on Windows,
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or the menu bar on Mac. If clippedToWorkArea is false, the entire monitor area is returned.
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*/
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const Rectangle getMainMonitorArea (const bool clippedToWorkArea = true) const;
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/** Returns the position and size of the monitor which contains this co-ordinate.
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If none of the monitors contains the point, this will just return the
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main monitor.
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If clippedToWorkArea is true, it will exclude any areas like the taskbar on Windows,
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or the menu bar on Mac. If clippedToWorkArea is false, the entire monitor area is returned.
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*/
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const Rectangle getMonitorAreaContaining (int x, int y, const bool clippedToWorkArea = true) const;
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//==============================================================================
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/** Returns the mouse position.
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The co-ordinates are relative to the top-left of the main monitor.
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*/
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static void getMousePosition (int& x, int& y);
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/** Makes the mouse pointer jump to a given location.
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The co-ordinates are relative to the top-left of the main monitor.
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*/
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static void setMousePosition (int x, int y);
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/** Returns the last position at which a mouse button was pressed.
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*/
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static void getLastMouseDownPosition (int& x, int& y);
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/** Returns the number of times the mouse button has been clicked since the
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app started.
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Each mouse-down event increments this number by 1.
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*/
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static int getMouseButtonClickCounter();
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//==============================================================================
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/** Registers a MouseListener that will receive all mouse events that occur on
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any component.
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@see removeGlobalMouseListener
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*/
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void addGlobalMouseListener (MouseListener* const listener) throw();
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/** Unregisters a MouseListener that was added with the addGlobalMouseListener()
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method.
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@see addGlobalMouseListener
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*/
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void removeGlobalMouseListener (MouseListener* const listener) throw();
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//==============================================================================
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/** Registers a MouseListener that will receive a callback whenever the focused
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component changes.
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*/
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void addFocusChangeListener (FocusChangeListener* const listener) throw();
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/** Unregisters a listener that was added with addFocusChangeListener(). */
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void removeFocusChangeListener (FocusChangeListener* const listener) throw();
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//==============================================================================
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/** Returns the number of components that are currently active as top-level
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desktop windows.
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@see getComponent, Component::addToDesktop
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*/
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int getNumComponents() const;
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/** Returns one of the top-level desktop window components.
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The index is from 0 to getNumComponents() - 1. This could return 0 if the
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index is out-of-range.
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@see getNumComponents, Component::addToDesktop
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*/
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Component* getComponent (const int index) const;
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/** Finds the component at a given screen location.
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This will drill down into top-level windows to find the child component at
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the given position.
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Returns 0 if the co-ordinates are inside a non-Juce window.
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*/
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Component* findComponentAt (const int screenX,
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const int screenY) const;
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//==============================================================================
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juce_UseDebuggingNewOperator
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/** Tells this object to refresh its idea of what the screen resolution is.
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(Called internally by the native code).
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*/
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void refreshMonitorSizes();
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/** True if the OS supports semitransparent windows */
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static bool canUseSemiTransparentWindows();
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private:
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//==============================================================================
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friend class Component;
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friend class ComponentPeer;
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SortedSet <void*> mouseListeners, focusListeners;
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VoidArray desktopComponents;
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friend class DeletedAtShutdown;
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friend class TopLevelWindowManager;
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Desktop();
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~Desktop();
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Array <Rectangle> monitorCoordsClipped, monitorCoordsUnclipped;
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int lastMouseX, lastMouseY;
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void timerCallback();
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void sendMouseMove();
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void resetTimer();
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int getNumDisplayMonitors() const;
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const Rectangle getDisplayMonitorCoordinates (const int index, const bool clippedToWorkArea) const;
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void addDesktopComponent (Component* const c);
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void removeDesktopComponent (Component* const c);
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void componentBroughtToFront (Component* const c);
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void triggerFocusCallback();
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void handleAsyncUpdate();
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Desktop (const Desktop&);
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const Desktop& operator= (const Desktop&);
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};
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#endif // __JUCE_DESKTOP_JUCEHEADER__
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