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nuttx-apps/include/graphics/twm4nx/twm4nx_events.hxx

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/////////////////////////////////////////////////////////////////////////////
// apps/include/graphics/twm4nx/twm4nx_events.hxx
// Twm4Nx Widget Event Handling
//
// Copyright (C) 2019 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 nor the names of its contributors may 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 __APPS_INCLUDE_GRAPHICS_TWM4NX_TWM4NX_EVENTS_HXX
#define __APPS_INCLUDE_GRAPHICS_TWM4NX_TWM4NX_EVENTS_HXX
/////////////////////////////////////////////////////////////////////////////
// Included Files
/////////////////////////////////////////////////////////////////////////////
#include <nuttx/config.h>
#include <cstdint>
#include <cstdbool>
#include <nuttx/nx/nxglib.h>
/////////////////////////////////////////////////////////////////////////////
// Preprocessor Definitions
/////////////////////////////////////////////////////////////////////////////
// struct SRedrawEventMsg is the largest message as of this writing
#define MAX_EVENT_MSGSIZE sizeof(struct SRedrawEventMsg)
#define MAX_EVENT_PAYLOAD (MAX_EVENT_MSGSIZE - sizeof(uint16_t))
#define EVENT_CRITICAL 0x0800
#define EVENT_RECIPIENT(id) ((id) & EVENT_RECIPIENT_MASK)
#define EVENT_ISCRITICAL(id) (((id) & EVENT_CRITICAL) != 0)
/////////////////////////////////////////////////////////////////////////////
// WidgetEvent
/////////////////////////////////////////////////////////////////////////////
namespace NXWidgets
{
class CNxTkWindow; // Forward reference
}
namespace Twm4Nx
{
class CWindow; // Forward reference
class CWindowEvent; // Forward reference
class CTwm4NxEvent; // Forward reference
class CTwm4Nx; // Forward reference
///////////////////////////////////////////////////////////////////////////
// Public Types
///////////////////////////////////////////////////////////////////////////
/**
* Event ID format:
*
* rrrr nooo oooo oooo
*
* Bits 0-10: Opcode
* Bit 11: Critical event (cannot be discarded*)
* Bits 12-15: Recipient of the event
*
* * During a window resize operation, all events are ignored except for
* those that are marked critical.
*/
/**
* This enumeration identifies the recipient of the event
*/
enum EEventRecipient
{
EVENT_RECIPIENT_SYSTEM = 0x0000, /**< Twm4Nx system event */
EVENT_RECIPIENT_BACKGROUND = 0x1000, /**< Background window event */
EVENT_RECIPIENT_ICONWIDGET = 0x2000, /**< Icon Widget event */
EVENT_RECIPIENT_ICONMGR = 0x3000, /**< Icon Manager event */
EVENT_RECIPIENT_MENU = 0x4000, /**< Menu related event */
EVENT_RECIPIENT_MAINMENU = 0x5000, /**< Menu related event */
EVENT_RECIPIENT_WINDOW = 0x6000, /**< Window related event */
EVENT_RECIPIENT_TOOLBAR = 0x7000, /**< Toolbar related event */
EVENT_RECIPIENT_BORDER = 0x8000, /**< Window border related event */
EVENT_RECIPIENT_RESIZE = 0x9000, /**< Window resize event */
EVENT_RECIPIENT_APP = 0xa000, /**< App received event via CTwn4NxEvent */
EVENT_RECIPIENT_MASK = 0xf000, /**< Used to isolate recipient */
};
/**
* Specific events include the recipient as part of the event ID encoding.
*/
enum EEventID
{
// Recipient == SYSTEM
EVENT_SYSTEM_NOP = 0x0000, /**< Null event */
EVENT_SYSTEM_ERROR = 0x0801, /**< Report system error */
EVENT_SYSTEM_EXIT = 0x0802, /**< Terminate the Twm4Nx session */
EVENT_SYSTEM_STARTUP = 0x0003, /**< Start an application */
// Recipient == BACKGROUND
EVENT_BACKGROUND_XYINPUT = 0x1000, /**< Poll for widget mouse/touch events */
EVENT_BACKGROUND_REDRAW = 0x1801, /**< Redraw the background */
// Recipient == ICONWIDGET
EVENT_ICONWIDGET_GRAB = 0x2000, /**< Click on toolbar title */
EVENT_ICONWIDGET_DRAG = 0x2001, /**< Drag window */
EVENT_ICONWIDGET_UNGRAB = 0x2002, /**< Release click on toolbar */
// Recipient == ICONMGR
EVENT_ICONMGR_XYINPUT = 0x3000, /**< Poll for widget mouse/touch events */
EVENT_ICONMGR_DEICONIFY = 0x3001, /**< De-iconify or raise the Icon Manager */
// Recipient == MENU
EVENT_MENU_XYINPUT = 0x4000, /**< Poll for widget mouse/touch events */
EVENT_MENU_COMPLETE = 0x4001, /**< Menu selection complete */
EVENT_MENU_SUBMENU = 0x4002, /**< Sub-menu selected */
// Recipient == MAINMENU
EVENT_MAINMENU_SELECT = 0x5000, /**< Main menu item selection */
// Recipient == WINDOW
EVENT_WINDOW_RAISE = 0x6000, /**< Raise window to the top of the hierarchy */
EVENT_WINDOW_LOWER = 0x6001, /**< Lower window to the bottom of the hierarchy */
EVENT_WINDOW_DEICONIFY = 0x6002, /**< De-iconify and raise window */
EVENT_WINDOW_DRAG = 0x6003, /**< Drag window */
EVENT_WINDOW_DELETE = 0x6804, /**< Delete window */
EVENT_WINDOW_DESKTOP = 0x6005, /**< Show the desktop */
// Recipient == TOOLBAR
EVENT_TOOLBAR_XYINPUT = 0x7800, /**< Poll for widget mouse/touch events */
EVENT_TOOLBAR_GRAB = 0x7001, /**< Click on title widget */
EVENT_TOOLBAR_UNGRAB = 0x7002, /**< Release click on title widget */
EVENT_TOOLBAR_MENU = 0x7003, /**< Toolbar menu button released */
EVENT_TOOLBAR_MINIMIZE = 0x7004, /**< Toolbar minimize button released */
EVENT_TOOLBAR_TERMINATE = 0x7005, /**< Toolbar delete button released */
// Recipient == BORDER
// Recipient == RESIZE
EVENT_RESIZE_XYINPUT = 0x9800, /**< Poll for widget mouse/touch events */
EVENT_RESIZE_BUTTON = 0x9801, /**< Start or stop a resize sequence */
EVENT_RESIZE_MOVE = 0x9802, /**< Mouse movement during a resize sequence */
EVENT_RESIZE_PAUSE = 0x9803, /**< Pause resize operation when unclicked */
EVENT_RESIZE_RESUME = 0x9804, /**< Resume resize operation when re-clicked */
EVENT_RESIZE_STOP = 0x9805, /**< End a resize sequence on second press */
// Recipient == APP
// All application defined events must (1) use recipient == EVENT_RECIPIENT_APP,
// and (2) provide an instance of CTwm4NxEvent in the SEventMsg structure.
};
// Contexts for events. These basically identify the source of the event
// message.
enum EEventContext
{
EVENT_CONTEXT_WINDOW = 0,
EVENT_CONTEXT_TOOLBAR,
EVENT_CONTEXT_BACKGROUND,
EVENT_CONTEXT_ICONWIDGET,
EVENT_CONTEXT_ICONMGR,
EVENT_CONTEXT_MENU,
EVENT_CONTEXT_RESIZE,
NUM_CONTEXTS
};
/**
* This type represents a generic messages, particularly button press
* or release events.
*/
struct SEventMsg
{
// Common fields
uint16_t eventID; /**< Encoded event ID */
FAR void *obj; /**< Context specific reference */
FAR void *handler; /**< Context specific handler */
// Event-specific fields
struct nxgl_point_s pos; /**< X/Y position */
uint8_t context; /**< Button press context */
};
/**
* This message form is used with CWindowEvent redraw commands
*/
struct SRedrawEventMsg
{
// Common fields
uint16_t eventID; /**< Encoded event ID */
FAR void *obj; /**< Context specific reference */
FAR void *handler; /**< Context specific handler */
// Event-specific fields
struct nxgl_rect_s rect; /**< Region to be redrawn */
bool more; /**< True: More redraw requests will follow */
};
/**
* This message form is used with CWindowEVent mouse/touchscreen
* input events
*/
struct SXyInputEventMsg
{
// Common fields
uint16_t eventID; /**< Encoded event ID */
FAR void *obj; /**< Context specific reference */
FAR void *handler; /**< Context specific handler */
// Event-specific fields
struct nxgl_point_s pos; /**< X/Y position */
uint8_t buttons; /**< Bit set of button presses */
};
/**
* This message form of the message used by CWindowEvent for blocked and
* keyboard input messages
*/
struct SNxEventMsg
{
// Common fields
uint16_t eventID; /**< Encoded event ID */
FAR void *obj; /**< Context specific reference */
FAR void *handler; /**< Context specific handler */
// Event-specific fields
FAR CWindowEvent *instance; /**< X/Y position */
};
}
#endif // __APPS_INCLUDE_GRAPHICS_TWM4NX_TWM4NX_EVENTS_HXX
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