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nuttx-apps/libnxwidgets/include/cnxtkwindow.hxx
patacongo 43cae03680 NxWM::CNxConsole and NXWidgets::CCallback can now redirect keyboard input to the NxConsole driver 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4754 42af7a65-404d-4744-a932-0658087f49c3
2012-05-20 18:56:14 +00:00

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/****************************************************************************
* NxWidgets/libnxwidgets/include/cnxtkwindow.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 __INCLUDE_CNXTKWINDOW_HXX
#define __INCLUDE_CNXTKWINDOW_HXX
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/nx/nxglib.h>
#include <nuttx/nx/nx.h>
#include <nuttx/nx/nxtk.h>
#include "ccallback.hxx"
#include "inxwindow.hxx"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Implementation Classes
****************************************************************************/
#if defined(__cplusplus)
namespace NXWidgets
{
class CNxToolbar;
struct SBitmap;
/**
* This class defines operations on a framed NX window.
* There are three instances that represent an NX window from the
* perspective of NXWidgets.
*
* - There is one widget control instance per NX window,
* - One CCallback instance per window,
* - One window instance.
*
* There a various kinds of of window instances, but each inherits
* (1) CCallback and dispatches the Windows callbacks and (2) INxWindow
* that describes the common window behavior.
*/
class CNxTkWindow : protected CCallback, public INxWindow
{
protected:
NXHANDLE m_hNxServer; /**< Handle to the NX server. */
NXTKWINDOW m_hNxTkWindow; /**< Handle to the NX raw window */
CWidgetControl *m_widgetControl; /**< Controlling widget for the window */
CNxToolbar *m_toolbar; /**< Child toolbar */
nxgl_coord_t m_toolbarHeight; /**< The height of the toolbar */
public:
/**
* Constructor. Creates an uninitialized instance of the CNxTkWindow
* object. The open() method must be called to initialize the instance.
*
* The general steps to create any window include:
* 1) Create a dumb CWigetControl instance
* 2) Pass the dumb CWidgetControl instance to the window constructor
* that inherits from INxWindow.
* 3) The window constructor call CWidgetControl methods to "smarten"
* the CWidgetControl instance with window-specific knowledge.
* 4) Call the open() method on the window to display the window.
* 5) After that, the fully smartened CWidgetControl instance can
* be used to generate additional widgets.
* 6) After that, the fully smartened CWidgetControl instance can
* be used to generate additional widgets by passing it to the
* widget constructor
*
* @param hNxServer Handle to the NX server.
* @param widgetControl Controlling widget for this window.
*/
CNxTkWindow(NXHANDLE hNxServer, CWidgetControl *widgetControl);
/**
* Destructor.
*/
~CNxTkWindow(void);
/**
* Creates a new window. Window creation is separate from
* object instantiation so that failures can be reported.
*
* @return True if the window was successfully opened.
*/
bool open(void);
/**
* Each implementation of INxWindow must provide a method to recover
* the contained CWidgetControl instance.
*
* @return The contained CWidgetControl instance
*/
CWidgetControl *getWidgetControl(void) const;
/**
* Open a toolbar on the framed window. This method both instantiates
* the toolbar object AND calls the INxWindow::open() method to
* create the toolbar. The toolbar is ready for use upon return.
*
* @param height. The height in rows of the tool bar
* @param widgetControl. The controlling widget for this window. If
* none is provided, then a new, vanilla CWidgetControl will be created
* for the tool bar.
* @return True if the toolbar was successfully created.
*/
CNxToolbar *openToolbar(nxgl_coord_t height,
CWidgetControl *widgetControl = (CWidgetControl *)0);
/**
* Detach the toolbar. This should *ONLY* be called by the toolbar
* instance itself. If this is called by end-user logic, it will
* screw things up miserably.
*/
inline void detachToolbar(void)
{
m_toolbar = (CNxToolbar *)NULL;
m_toolbarHeight = 0;
}
/**
* Request the position and size information of the window. The values
* will be returned asynchronously through the client callback method.
* The GetPosition() method may than be called to obtain the positional
* data as provided by the callback.
*
* @return True on success, false on any failure.
*/
bool requestPosition(void);
/**
* Get the position of the window (as reported by the NX callback).
*
* @return True on success, false on any failure.
*/
bool getPosition(FAR struct nxgl_point_s *pos);
/**
* Get the size of the window (as reported by the NX callback).
*
* @return The size.
*/
bool getSize(FAR struct nxgl_size_s *size);
/**
* Set the position and size of the window.
*
* @param pos The new position of the window.
* @return True on success, false on any failure.
*/
bool setPosition(FAR const struct nxgl_point_s *pos);
/**
* Set the size of the selected window.
*
* @param size The new size of the window.
* @return True on success, false on any failure.
*/
bool setSize(FAR const struct nxgl_size_s *size);
/**
* Bring the window to the top of the display.
*
* @return True on success, false on any failure.
*/
bool raise(void);
/**
* Lower the window to the bottom of the display.
*
* @return True on success, false on any failure.
*/
bool lower(void);
/**
* Each window implementation also inherits from CCallback. CCallback,
* by default, forwards NX keyboard input to the various widgets residing
* in the window. But NxConsole is a different usage model; In this case,
* keyboard input needs to be directed to the NxConsole character driver.
* This method can be used to enable (or disable) redirection of NX
* keyboard input from the window widgets to the NxConsole
*
* @param handle. The NXCONSOLE handle. If non-NULL, NX keyboard
* input will be directed to the NxConsole driver using this
* handle; If NULL (the default), NX keyboard input will be
* directed to the widgets within the window.
*/
#ifdef CONFIG_NXCONSOLE_NXKBDIN
inline void redirectNxConsole(NXCONSOLE handle)
{
setNxConsole(handle);
}
#endif
/**
* Set an individual pixel in the window with the specified color.
*
* @param pos The location of the pixel to be filled.
* @param color The color to use in the fill.
*
* @return True on success; false on failure.
*/
bool setPixel(FAR const struct nxgl_point_s *pos,
nxgl_mxpixel_t color);
/**
* Fill the specified rectangle in the window with the specified color.
*
* @param pRect The location to be filled.
* @param color The color to use in the fill.
*
* @return True on success; false on failure.
*/
bool fill(FAR const struct nxgl_rect_s *pRect,
nxgl_mxpixel_t color);
/**
* Get the raw contents of graphic memory within a rectangular region. NOTE:
* Since raw graphic memory is returned, the returned memory content may be
* the memory of windows above this one and may not necessarily belong to
* this window unless you assure that this is the top window.
*
* @param rect The location to be copied
* @param dest - The describes the destination bitmap to receive the
* graphics data.
*/
void getRectangle(FAR const struct nxgl_rect_s *rect, struct SBitmap *dest);
/**
* Fill the specified trapezoidal region in the window with the specified
* color.
*
* @param pClip Clipping rectangle relative to window (may be null).
* @param pTrap The trapezoidal region to be filled.
* @param color The color to use in the fill.
*
* @return True on success; false on failure.
*/
bool fillTrapezoid(FAR const struct nxgl_rect_s *pClip,
FAR const struct nxgl_trapezoid_s *pTrap,
nxgl_mxpixel_t color);
/**
* Fill the specified line in the window with the specified color.
*
* @param vector - Describes the line to be drawn
* @param width - The width of the line
* @param color - The color to use to fill the line
*
* @return True on success; false on failure.
*/
bool drawLine(FAR struct nxgl_vector_s *vector,
nxgl_coord_t width,
nxgl_mxpixel_t color);
/**
* Draw a filled circle at the specified position, size, and color.
*
* @param center The window-relative coordinates of the circle center.
* @param radius The radius of the rectangle in pixels.
* @param color The color of the rectangle.
*/
bool drawFilledCircle(struct nxgl_point_s *center, nxgl_coord_t radius,
nxgl_mxpixel_t color);
/**
* Move a rectangular region within the window.
*
* @param pRect Describes the rectangular region to move.
* @param pOffset The offset to move the region.
*
* @return True on success; false on failure.
*/
bool move(FAR const struct nxgl_rect_s *pRect,
FAR const struct nxgl_point_s *pOffset);
/**
* Copy a rectangular region of a larger image into the rectangle in the
* specified window.
*
* @param pDest Describes the rectangular on the display that will receive
* the bitmap.
* @param pSrc The start of the source image.
* @param pOrigin the pOrigin of the upper, left-most corner of the full
* bitmap. Both pDest and pOrigin are in window coordinates, however,
* pOrigin may lie outside of the display.
* @param stride The width of the full source image in bytes.
*
* @return True on success; false on failure.
*/
bool bitmap(FAR const struct nxgl_rect_s *pDest,
FAR const void *pSrc,
FAR const struct nxgl_point_s *pOrigin,
unsigned int stride);
};
}
#endif // __cplusplus
#endif // __INCLUDE_CNXTKWINDOW_HXX
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