forked from Archive/PX4-Autopilot
221 lines
8.1 KiB
C++
221 lines
8.1 KiB
C++
/****************************************************************************
|
|
* NxWidgets/libnxwidgets/include/ccallback.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_CCALLBACK_HXX
|
|
#define __INCLUDE_CCALLBACK_HXX
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
|
|
#include <nuttx/nx/nxglib.h>
|
|
#include <nuttx/nx/nx.h>
|
|
#include <nuttx/nx/nxtk.h>
|
|
|
|
#include "crect.hxx"
|
|
|
|
/****************************************************************************
|
|
* Pre-Processor Definitions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Implementation Classes
|
|
****************************************************************************/
|
|
|
|
#if defined(__cplusplus)
|
|
|
|
namespace NXWidgets
|
|
{
|
|
class CWidgetControl;
|
|
|
|
/**
|
|
* Callback function proxies. This class receives and dispatches callbacks
|
|
* from the NX server. This calls also manages a few lower-level details
|
|
* such as keeping track of the reported window handles and window positions
|
|
* and sizes.
|
|
*
|
|
* 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 CCallback
|
|
{
|
|
private:
|
|
struct nx_callback_s m_callbacks; /**< C-callable vtable of callback function pointers */
|
|
|
|
// Methods in the callback vtable
|
|
|
|
/**
|
|
* Re-Draw Callback. The redraw event is handled by CWidgetControl::redrawEvent.
|
|
*
|
|
* NOTE: This method runs in the context of the NX callback which may
|
|
* either be the context of the owning thread or, in the case of multi-
|
|
* user NX, the context of the NX event listener thread.
|
|
*
|
|
* @param hWindow Handle to a specific NX window.
|
|
* @param pRect The rectangle that needs to be re-drawn (in window
|
|
* relative coordinates).
|
|
* @param bMore true: More re-draw requests will follow.
|
|
* @param pvArg User provided argument (see nx_openwindow, nx_requestbg,
|
|
* nxtk_openwindow, or nxtk_opentoolbar).
|
|
*/
|
|
|
|
static void redraw(NXHANDLE hWindow, FAR const struct nxgl_rect_s *pRect,
|
|
bool bMore, FAR void *pvArg);
|
|
|
|
/**
|
|
* Position Callback. The new positional data is handled by
|
|
* CWidgetControl::geometryEvent.
|
|
*
|
|
* NOTE: This method runs in the context of the NX callback which may
|
|
* either be the context of the owning thread or, in the case of multi-
|
|
* user NX, the context of the NX event listener thread.
|
|
*
|
|
* @param hWindow Handle to a specific NX window.
|
|
* @param pSize The size of the window.
|
|
* @param pPos The position of the upper left hand corner of the window on
|
|
* the overall display.
|
|
* @param pBounds The bounding rectangle that describes the entire display.
|
|
* @param pvArg User provided argument (see nx_openwindow, nx_requestbg,
|
|
* nxtk_openwindow, or nxtk_opentoolbar).
|
|
*/
|
|
|
|
static void position(NXHANDLE hWindow, FAR const struct nxgl_size_s *pSize,
|
|
FAR const struct nxgl_point_s *pPos,
|
|
FAR const struct nxgl_rect_s *pBounds,
|
|
FAR void *pvArg);
|
|
|
|
/**
|
|
* New mouse data is available for the window. The new mouse
|
|
* data is handled by CWidgetControl::newMouseEvent.
|
|
*
|
|
* NOTE: This method runs in the context of the NX callback which may
|
|
* either be the context of the NX event listener thread (if multi-
|
|
* user NX), or possibly in the connects of device driver or even a
|
|
* device driver interrupt.
|
|
*
|
|
* The GUI thread is probably sleeping a semaphore, waiting to be
|
|
* awakened by a mouse or keyboard event.
|
|
*
|
|
* @param hWindow Handle to a specific NX window.
|
|
* @param pPos The (x,y) position of the mouse.
|
|
* @param buttons See NX_MOUSE_* definitions.
|
|
* @param pvArg User provided argument (see nx_openwindow, nx_requestbg,
|
|
* nxtk_openwindow, or nxtk_opentoolbar).
|
|
*/
|
|
|
|
#ifdef CONFIG_NX_MOUSE
|
|
static void newMouseEvent(NXHANDLE hWindow, FAR const struct nxgl_point_s *pPos,
|
|
uint8_t buttons, FAR void *pvArg);
|
|
#endif /* CONFIG_NX_MOUSE */
|
|
|
|
/**
|
|
* New keyboard/keypad data is available for the window. The new
|
|
* keyboard data is handled by CWidgetControl::newKeyboardEvent.
|
|
*
|
|
* NOTE: This method runs in the context of the NX callback which may
|
|
* either be the context of the NX event listener thread (if multi-
|
|
* user NX), or possibly in the connects of device driver or even a
|
|
* device driver interrupt.
|
|
*
|
|
* The GUI thread is probably sleeping a semaphore, waiting to be
|
|
* awakened by a mouse or keyboard event.
|
|
*
|
|
* @param hWindow Handle to a specific NX window.
|
|
* @param nCh The number of characters that are available in pStr[].
|
|
* @param pStr The array of characters.
|
|
* @param pvArg User provided argument (see nx_openwindow, nx_requestbg,
|
|
* nxtk_openwindow, or nxtk_opentoolbar).
|
|
*/
|
|
|
|
#ifdef CONFIG_NX_KBD
|
|
static void newKeyboardEvent(NXHANDLE hWindow, uint8_t nCh, FAR const uint8_t *pStr,
|
|
FAR void *pvArg);
|
|
#endif // CONFIG_NX_KBD
|
|
|
|
public:
|
|
|
|
/**
|
|
* Constructor.
|
|
*
|
|
* @param pWidgetControl Control object associated with this window
|
|
*/
|
|
|
|
CCallback(CWidgetControl *pWidgetControl);
|
|
|
|
/**
|
|
* Destructor.
|
|
*/
|
|
|
|
inline ~CCallback(void) {}
|
|
|
|
/**
|
|
* Get the callback vtable. This is neeed only by the window
|
|
* instance that inherits this class. The window instance needs the
|
|
* C-callable vtable in order to create the NX window. Once the
|
|
* window is created, this class will begin to receive callbacks via
|
|
* the C-callable vtable methods.
|
|
*
|
|
* @return This method returns the C-callable vtable needed for
|
|
* NX window creation.
|
|
*/
|
|
|
|
inline FAR struct nx_callback_s *getCallbackVTable(void)
|
|
{
|
|
return &m_callbacks;
|
|
}
|
|
};
|
|
}
|
|
|
|
#endif // __cplusplus
|
|
|
|
#endif // __INCLUDE_CCALLBACK_HXX
|
|
|