7d28294b45
apps/graphics/twm4nx: Rename IDragEvent interface to IEventTap. I intend to reuse this interface for window resizing as well as dragging.
apps/graphics/twm4nx: Some trivial elimination of some unused logic in CResize.
280 lines
9.9 KiB
C++
280 lines
9.9 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// apps/graphics/twm4nx/src/cwindowevent.hxx
|
|
// Shim to manage the interface between NX messages and NxWidgets
|
|
//
|
|
// 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_CWINDOWEVENT_HXX
|
|
#define __APPS_INCLUDE_GRAPHICS_TWM4NX_CWINDOWEVENT_HXX
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// Included Files
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <cstdbool>
|
|
#include <mqueue.h>
|
|
|
|
#include "graphics/nxwidgets/cwindoweventhandler.hxx"
|
|
#include "graphics/nxwidgets/cwidgetstyle.hxx"
|
|
#include "graphics/nxwidgets/cwidgetcontrol.hxx"
|
|
#include "graphics/twm4nx/twm4nx_events.hxx"
|
|
#include "graphics/twm4nx/ctwm4nx.hxx"
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// Implementation Classes
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
namespace Twm4Nx
|
|
{
|
|
class CWindow; // Forward reference
|
|
|
|
// This structure provides information to support application events
|
|
|
|
struct SAppEvents
|
|
{
|
|
FAR void *eventObj; /**< Object reference that accompanies events */
|
|
nxgl_coord_t minWidth; /**< The minimum width of the window */
|
|
uint16_t redrawEvent; /**< Redraw event ID */
|
|
uint16_t mouseEvent; /**< Mouse/touchscreen event ID */
|
|
uint16_t kbdEvent; /**< Keyboard event ID */
|
|
uint16_t closeEvent; /**< Window close event ID */
|
|
};
|
|
|
|
/**
|
|
* This abstract base class provides add on methods to support movement
|
|
* of a window.
|
|
*/
|
|
|
|
class IEventTap
|
|
{
|
|
public:
|
|
/**
|
|
* A virtual destructor is required in order to override the ITextBox
|
|
* destructor. We do this because if we delete ITextBox, we want the
|
|
* destructor of the class that inherits from ITextBox to run, not this
|
|
* one.
|
|
*/
|
|
|
|
virtual ~IEventTap(void)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* This function is called when there is any movement of the mouse or
|
|
* touch position that would indicate that the object is being moved.
|
|
*
|
|
* @param pos The current mouse/touch X/Y position in toolbar relative
|
|
* coordinates.
|
|
* @param arg The user-argument provided that accompanies the callback
|
|
* @return True: if the movement event was processed; false it is was
|
|
* ignored. The event should be ignored if there is not actually
|
|
* a movement event in progress
|
|
*/
|
|
|
|
virtual bool moveEvent(FAR const struct nxgl_point_s &pos,
|
|
uintptr_t arg) = 0;
|
|
|
|
/**
|
|
* This function is called if the mouse left button is released or
|
|
* if the touchscreen touch is lost. This indicates that the
|
|
* movement sequence is complete.
|
|
*
|
|
* @param pos The last mouse/touch X/Y position in toolbar relative
|
|
* coordinates.
|
|
* @param arg The user-argument provided that accompanies the callback
|
|
* @return True: If the movement event was processed; false it is was
|
|
* ignored. The event should be ignored if there is not actually
|
|
* a movement event in progress
|
|
*/
|
|
|
|
virtual bool dropEvent(FAR const struct nxgl_point_s &pos,
|
|
uintptr_t arg) = 0;
|
|
|
|
/**
|
|
* Is the tap active?
|
|
*
|
|
* @param arg The user-argument provided that accompanies the callback
|
|
* @return True: If the tap is enabled.
|
|
*/
|
|
|
|
virtual bool isActive(uintptr_t arg) = 0;
|
|
|
|
/**
|
|
* Enable/disable movement
|
|
*
|
|
* @param enable. True: Enable movement
|
|
* @param arg The user-argument provided that accompanies the callback
|
|
*/
|
|
|
|
virtual void enableMovement(bool enable, uintptr_t arg) = 0;
|
|
};
|
|
|
|
/**
|
|
* The class CWindowEvent integrates the widget control with some special
|
|
* handling of mouse and keyboard inputs needs by NxWM. It use used
|
|
* in place of CWidgetControl whenever an NxWM window is created.
|
|
*
|
|
* CWindowEvent cohabitates with CWidgetControl only because it needs the
|
|
* CWidgetControl as an argument in its messaging.
|
|
*/
|
|
|
|
class CWindowEvent : public NXWidgets::CWindowEventHandler,
|
|
public NXWidgets::CWidgetControl
|
|
{
|
|
private:
|
|
FAR CTwm4Nx *m_twm4nx; /**< Cached instance of CTwm4Nx */
|
|
FAR CWindow *m_clientWindow; /**< The client window instance */
|
|
mqd_t m_eventq; /**< NxWidget event message queue */
|
|
struct SAppEvents m_appEvents; /**< Application event information */
|
|
|
|
// Dragging
|
|
|
|
FAR IEventTap *m_tapHandler; /**< Event tap handlers (may be NULL) */
|
|
uintptr_t m_tapArg; /**< User argument associated with callback */
|
|
|
|
// Override CWidgetEventHandler virtual methods ///////////////////////
|
|
|
|
/**
|
|
* Handle a NX window redraw request event
|
|
*
|
|
* @param nxRect The region in the window to be redrawn
|
|
* @param more More redraw requests will follow
|
|
*/
|
|
|
|
void handleRedrawEvent(FAR const nxgl_rect_s *nxRect, bool more);
|
|
|
|
#ifdef CONFIG_NX_XYINPUT
|
|
/**
|
|
* Handle an NX window mouse input event.
|
|
*/
|
|
|
|
void handleMouseEvent(FAR const struct nxgl_point_s *pos,
|
|
uint8_t buttons);
|
|
#endif
|
|
|
|
#ifdef CONFIG_NX_KBD
|
|
/**
|
|
* Handle a NX window keyboard input event.
|
|
*/
|
|
|
|
void handleKeyboardEvent(void);
|
|
#endif
|
|
|
|
/**
|
|
* Handle a NX window blocked event
|
|
*
|
|
* @param arg - User provided argument (see nx_block or nxtk_block)
|
|
*/
|
|
|
|
void handleBlockedEvent(FAR void *arg);
|
|
|
|
public:
|
|
|
|
/**
|
|
* CWindowEvent Constructor
|
|
*
|
|
* @param twm4nx The Twm4Nx session instance.
|
|
* @param client The client window instance.
|
|
* @param events Describes the application event configuration
|
|
* @param style The default style that all widgets on this display
|
|
* should use. If this is not specified, the widget will use the
|
|
* values stored in the defaultCWidgetStyle object.
|
|
*/
|
|
|
|
CWindowEvent(FAR CTwm4Nx *twm4nx, FAR CWindow *client,
|
|
FAR const struct SAppEvents &events,
|
|
FAR const NXWidgets::CWidgetStyle *style =
|
|
(const NXWidgets::CWidgetStyle *)NULL);
|
|
|
|
/**
|
|
* CWindowEvent Destructor.
|
|
*/
|
|
|
|
~CWindowEvent(void);
|
|
|
|
/**
|
|
* Register an IEventTap instance to provide callbacks when mouse
|
|
* movement is received. A mouse movement with the left button down
|
|
* or a touchscreen touch movement are treated as a drag event.
|
|
* Release of the mouse left button or loss of the touchscreen touch
|
|
* is treated as a drop event.
|
|
*
|
|
* @param tapHandler A reference to the IEventTap callback interface.
|
|
* @param arg The argument returned with the IEventTap callbacks.
|
|
*/
|
|
|
|
inline void installEventTap(FAR IEventTap *tapHandler, uintptr_t arg)
|
|
{
|
|
m_tapHandler = tapHandler;
|
|
m_tapArg = arg;
|
|
}
|
|
|
|
/**
|
|
* Return the installed event tap. This is useful if you want to
|
|
* install a different event tap, then restore the event tap returned
|
|
* by this method when you are finished.
|
|
*
|
|
* @param tapHandler The location to return IEventTap callback interface.
|
|
* @param arg The loation to return the IEventTap argument
|
|
*/
|
|
|
|
inline void getEventTap(FAR IEventTap *&tapHandler, uintptr_t &arg)
|
|
{
|
|
m_tapHandler = tapHandler;
|
|
m_tapArg = arg;
|
|
}
|
|
|
|
/**
|
|
* Modify event handlers.
|
|
*
|
|
* @param events Describes the application event configuration
|
|
* @return True is returned on success
|
|
*/
|
|
|
|
inline bool configureEvents(FAR const struct SAppEvents &events)
|
|
{
|
|
m_appEvents.eventObj = events.eventObj; // Event object reference
|
|
m_appEvents.redrawEvent = events.redrawEvent; // Redraw event ID
|
|
m_appEvents.mouseEvent = events.mouseEvent; // Mouse/touchscreen event ID
|
|
m_appEvents.kbdEvent = events.kbdEvent; // Keyboard event ID
|
|
m_appEvents.closeEvent = events.closeEvent; // Window close event ID
|
|
return true;
|
|
}
|
|
};
|
|
}
|
|
|
|
#endif // __APPS_INCLUDE_GRAPHICS_TWM4NX_CWINDOWEVENT_HXX
|