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nuttx-bb/NxWidgets/nxwm/include/ctaskbar.hxx

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/****************************************************************************
* NxWidgets/nxwm/include/cnxtaskbar.hxx
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX, NxWidgets, nor the names of its contributors
* me be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __NXWM_INCLUDE_CTASKBAR_HXX
#define __NXWM_INCLUDE_CTASKBAR_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "nxconfig.hxx"
#include "tnxarray.hxx"
#include "cnxwindow.hxx"
#include "cnxserver.hxx"
#include "cwidgeteventhandler.hxx"
#include "cwidgeteventargs.hxx"
#include "iapplication.hxx"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Implementation Class Definition
****************************************************************************/
#if defined(__cplusplus)
namespace NxWM
{
/**
* This class describes the NX window manager's task bar. That task bar is,
* of course, used to dock active applications. But in NxWM, it is also
* the heart of the window manager: It inherits for CNxServer and, hence,
* represents the NX server itself. It also then serves as the NxWM
* window factory.
*
* Why do it this way? The only reason is so that if you have an instance
* of CTaskbar, you have everything you need to manage new applications.
* It might have been a better decision to separate the window factory into
* a separate class instead of making the task bar of such central importance
* (and I may still do that someday)
*/
class CTaskbar : public NXWidgets::CNxServer, private NXWidgets::CWidgetEventHandler
{
private:
/**
* This structure represents an application and its associated icon image
*/
struct STaskbarSlot
{
IApplication *app; /**< A reference to the icon */
NXWidgets::CImage *image; /**< The icon image that goes with the application */
};
/**
* Taskbar state
*/
NXWidgets::CNxWindow *m_taskbar; /**< The task bar window */
NXWidgets::CNxWindow *m_background; /**< The background window */
NXWidgets::CImage *m_backImage; /**< The background image */
IApplication *m_topApp; /**< The top application in the hierarchy */
TNxArray<struct STaskbarSlot> m_slots; /**< List of application slots in the task bar */
bool m_started; /**< True if window manager has been started */
/**
* Create a raw window.
*
* 1) Create a dumb CWigetControl instance
* 2) Pass the dumb CWidgetControl instance to the window constructor
* that inherits from INxWindow. This will "smarten" the CWidgetControl
* instance with some window knowlede
* 3) Call the open() method on the window to display the window.
* 4) After that, the fully smartened CWidgetControl instance can
* be used to generate additional widgets by passing it to the
* widget constructor
*/
NXWidgets::CNxWindow *openRawWindow(void);
/**
* Create a framed application window
*
* This may be used to provide the window parater to the IApplication constructor
*
* @return A partially initialized application window instance.
*/
NXWidgets::CNxTkWindow *openFramedWindow(void);
/**
* Set size and position of a window in the application area.
*
* @param window. The window to be resized and repositioned
*/
void setApplicationGeometry(NXWidgets::INxWindow *window);
/**
* Create the task bar window.
*
* @return true on success
*/
bool createTaskbarWindow(void);
/**
* Create the background window.
*
* @return true on success
*/
bool createBackgroundWindow(void);
/**
* Create the background image.
*
* @return true on success
*/
bool createBackgroundImage(void);
/**
* (Re-)draw the task bar window.
*
* @return true on success
*/
bool redrawTaskbarWindow(void);
/**
* Redraw the window at the top of the heirarchy.
*
* @return true on success
*/
bool redrawTopWindow(void);
/**
* (Re-)draw the background window.
*
* @return true on success
*/
bool redrawBackgroundWindow(void);
/**
* Redraw the last application in the list of application maintained by
* the task bar.
*
* @param app. The new top application to draw
* @return true on success
*/
bool redrawApplicationWindow(IApplication *app);
/**
* The application window is hidden (either it is minimized or it is
* maximized, but not at the top of the hierarchy)
*
* @param app. The application to hide
*/
void hideApplicationWindow(IApplication *app);
/**
* Handle a mouse button click event.
*
* @param e The event data.
*/
void handleClickEvent(const NXWidgets::CWidgetEventArgs &e);
public:
/**
* CTaskbar Constructor
*
* @param hWnd - NX server handle
*/
CTaskbar(void);
/**
* CTaskbar Destructor
*/
~CTaskbar(void);
/**
* Connect to the server
*/
bool connect(void);
/**
* Disconnect from the server
*/
void disconnect(void);
/**
* Initialize task bar. Task bar initialization is separate from
* object instantiation so that failures can be reported. The window
* manager start-up sequence is:
*
* 1. Create the CTaskbar instance,
* 2. Call the CTaskbar::connect() method to connect to the NX server (CTaskbar
* inherits the connect method from CNxServer),
* 3. Call the CTaskbar::initWindowManager() method to initialize the task bar.
* 4. Call CTaskBar::startApplication repeatedly to add applications to the task bar
* 5. Call CTaskBar::startWindowManager() to start the display with applications in place
*
* CTaskbar::initWindowManager() prepares the task bar to receive applications.
* CTaskBar::startWindowManager() brings the window manager up with those applications
* in place.
*
* @return True if the window was successfully initialized.
*/
bool initWindowManager(void);
/**
* Start the window manager and present the initial displays. The window
* manager start-up sequence is:
*
* 1. Create the CTaskbar instance,
* 2. Call the CTaskbar::connect() method to connect to the NX server (CTaskbar
* inherits the connect method from CNxServer),
* 3. Call the CTaskbar::initWindowManager() method to initialize the task bar.
* 4. Call CTaskBar::startApplication repeatedly to add applications to the task bar
* 5. Call CTaskBar::startWindowManager to start the display with applications in place
*
* CTaskbar::initWindowManager() prepares the task bar to receive applications.
* CTaskBar::startWindowManager() brings the window manager up with those applications
* in place.
*
* CTaskBar::startWindowManager() will present the task bar and the background image.
* The The initial taskbar will contain only the start window icon.
*
* @return true on success
*/
bool startWindowManager(void);
/**
* Create an application window. Creating a new application in the start
* window requires three steps:
*
* 1. Call CTaskBar::openApplicationWindow to create a window for the application,
* 2. Instantiate the application, providing the window to the application's
* constructor,
* 3. Then call CStartWindow::addApplication to add the application to the
* start window.
*
* When the application is selected from the start window:
*
* 4. Call CTaskBar::startApplication start the application and bring its window to
* the top.
*/
CApplicationWindow *openApplicationWindow(void);
/**
* Start an application and add its icon to the taskbar. The applications's
* window is brought to the top. Creating a new application in the start
* window requires three steps:
*
* 1. Call CTaskBar::openApplicationWindow to create a window for the application,
* 2. Instantiate the application, providing the window to the application's
* constructor,
* 3. Then call CStartWindow::addApplication to add the application to the start window.
*
* When the application is selected from the start window:
*
* 4. Call CTaskBar::startApplication start the application and bring its window to
* the top.
*
* @param app. The new application to add to the task bar
* @param minimized. The new application starts in the minimized state
* @return true on success
*/
bool startApplication(IApplication *app, bool minimized);
/**
* Move window to the top of the hierarchy and re-draw it. This method
* does nothing if the application is minimized.
*
* @param app. The new application to show
* @return true on success
*/
bool topApplication(IApplication *app);
/**
* Maximize an application by moving its window to the top of the hierarchy
* and re-drawing it. If the application was already maximized, then this
* method is equivalent to topApplication().
*
* @param app. The new application to add to the task bar
* @return true on success
*/
bool maximizeApplication(IApplication *app);
/**
* Minimize an application by moving its window to the bottom of the
* and redrawing the next visible appliation.
*
* @param app. The new application to add to the task bar
* @return true on success
*/
bool minimizeApplication(IApplication *app);
/**
* Destroy an application. Move its window to the bottom and remove its
* icon from the task bar.
*
* @param app. The new application to remove from the task bar
* @return true on success
*/
bool stopApplication(IApplication *app);
/**
* Simulate a mouse click on the icon at index. This inline method is only
* used during automated testing of NxWM.
*/
#ifdef CONFIG_NXWM_UNITTEST
inline void clickIcon(int index)
{
if (index < m_slots.size())
{
// Get the image widget at this index
NXWidgets::CImage *image = m_slots.at(index).image;
// Get the size and position of the widget
struct nxgl_size_s imageSize;
image->getSize(imageSize);
struct nxgl_point_s imagePos;
image->getPos(imagePos);
// And click the image at its center
image->click(imagePos.x + (imageSize.w >> 1), imagePos.y + (imageSize.h >> 1));
}
}
#endif
};
}
#endif // __cplusplus
#endif // __NXWM_INCLUDE_CTASKBAR_HXX
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