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Diffstat (limited to 'NxWidgets/nxwm/src/cwindowmessenger.cxx')
| -rw-r--r-- | NxWidgets/nxwm/src/cwindowmessenger.cxx | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/NxWidgets/nxwm/src/cwindowmessenger.cxx b/NxWidgets/nxwm/src/cwindowmessenger.cxx new file mode 100644 index 000000000..4e458566d --- /dev/null +++ b/NxWidgets/nxwm/src/cwindowmessenger.cxx @@ -0,0 +1,210 @@ +/******************************************************************************************** + * NxWidgets/nxwm/src/cwindowmessenger.cxx + * + * 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. + * + ********************************************************************************************/ + +/******************************************************************************************** + * Included Files + ********************************************************************************************/ + +#include <nuttx/config.h> + +#include <cfcntl> +#include <cerrno> + +#include <debug.h> + +#include "nxwmconfig.hxx" +#include "cstartwindow.hxx" +#include "cwindowmessenger.hxx" + +/******************************************************************************************** + * Pre-Processor Definitions + ********************************************************************************************/ + +/******************************************************************************************** + * CWindowMessenger Method Implementations + ********************************************************************************************/ + +using namespace NxWM; + +/** + * CWindowMessenger Constructor + */ + +CWindowMessenger::CWindowMessenger(void) +{ + // Open a message queue to communicate with the start window task. We need to create + // the message queue if it does not exist. + + struct mq_attr attr; + attr.mq_maxmsg = CONFIG_NXWM_STARTWINDOW_MXMSGS; + attr.mq_msgsize = sizeof(struct SStartWindowMessage); + attr.mq_flags = 0; + + m_mqd = mq_open(g_startWindowMqName, O_WRONLY|O_CREAT, 0666, &attr); + if (m_mqd == (mqd_t)-1) + { + gdbg("ERROR: mq_open(%s) failed: %d\n", g_startWindowMqName, errno); + } +} + +/** + * CWindowMessenger Destructor. + */ + +CWindowMessenger::~CWindowMessenger(void) +{ + // Close the message queue + + (void)mq_close(m_mqd); +} + +/** + * Destroy the application window and everything in it. This is + * handled by CWindowMessenger (vs just calling the destructors) because + * in the case where an application destroys itself (because of pressing + * the stop button), then we need to unwind and get out of the application + * logic before destroying all of its objects. + */ + +void CWindowMessenger::destroy(IApplication *app) +{ + // Send a message to destroy the window isntance at a later time + + struct SStartWindowMessage outmsg; + outmsg.msgId = MSGID_DESTROY_APP; + outmsg.instance = (FAR void *)app; + + gdbg("Sending MSGID_DESTROY_APP with instance=%p\n", app); + int ret = mq_send(m_mqd, &outmsg, sizeof(struct SStartWindowMessage), + CONFIG_NXWM_STARTWINDOW_MXMPRIO); + if (ret < 0) + { + gdbg("ERROR: mq_send failed: %d\n", errno); + } +} + +/** + * Handle an NX window mouse input event. + * + * @param e The event data. + */ + +#ifdef CONFIG_NX_MOUSE +void CWindowMessenger::handleMouseEvent(void) +{ + // The logic path here is tortuous but flexible: + // + // 1. A listener thread receives mouse or touchscreen input and injects + // that into NX via nx_mousein + // 2. In the multi-user mode, this will send a message to the NX server + // 3. The NX server will determine which window gets the mouse input + // and send a window event message to the NX listener thread. + // 4. The NX listener thread receives a windows event. The NX listener thread + // which is part of CTaskBar and was created when NX server connection was + // established). This event may be a positional change notification, a + // redraw request, or mouse or keyboard input. In this case, mouse input. + // 5. The NX listener thread handles the message by calling nx_eventhandler(). + // nx_eventhandler() dispatches the message by calling a method in the + // NXWidgets::CCallback instance associated with the window. + // NXWidgets::CCallback is a part of the CWidgetControl. + // 6. NXWidgets::CCallback calls into NXWidgets::CWidgetControl to process + // the event. + // 7. NXWidgets::CWidgetControl records the new state data and raises a + // window event. + // 8. NXWidgets::CWindowEventHandlerList will give the event to this method + // NxWM::CWindowMessenger. + // 9. This NxWM::CWindowMessenger method will send the a message on a well- + // known message queue. + // 10. This CStartWindow::startWindow task will receive and process that + // message by calling CWidgetControl::pollEvents() + + struct SStartWindowMessage outmsg; + outmsg.msgId = MSGID_MOUSE_INPUT; + outmsg.instance = (FAR void *)this; + + int ret = mq_send(m_mqd, &outmsg, sizeof(struct SStartWindowMessage), + CONFIG_NXWM_STARTWINDOW_MXMPRIO); + if (ret < 0) + { + gdbg("ERROR: mq_send failed: %d\n", errno); + } +} +#endif + +/** + * Handle a NX window keyboard input event. + */ + +#ifdef CONFIG_NX_KBD +void CWindowMessenger::handleKeyboardEvent(void) +{ + // The logic path here is tortuous but flexible: + // + // 1. A listener thread receives keyboard input and injects that into NX + // via nx_kbdin. + // 2. In the multi-user mode, this will send a message to the NX server + // 3. The NX server will determine which window gets the keyboard input + // and send a window event message to the NX listener thread. + // 4. The NX listener thread receives a windows event. The NX listener thread + // which is part of CTaskBar and was created when NX server connection was + // established). This event may be a positional change notification, a + // redraw request, or mouse or keyboard input. In this case, keyboard input. + // 5. The NX listener thread handles the message by calling nx_eventhandler(). + // nx_eventhandler() dispatches the message by calling a method in the + // NXWidgets::CCallback instance associated with the window. + // NXWidgets::CCallback is a part of the CWidgetControl. + // 6. NXWidgets::CCallback calls into NXWidgets::CWidgetControl to process + // the event. + // 7. NXWidgets::CWidgetControl records the new state data and raises a + // window event. + // 8. NXWidgets::CWindowEventHandlerList will give the event to this method + // NxWM::CWindowMessenger. + // 9. This NxWM::CWindowMessenger method will send the a message on a well- + // known message queue. + // 10. This CStartWindow::startWindow task will receive and process that + // message by calling CWidgetControl::pollEvents() + + struct SStartWindowMessage outmsg; + outmsg.msgId = MSGID_KEYBOARD_INPUT; + outmsg.instance = (FAR void *)this; + + int ret = mq_send(m_mqd, &outmsg, sizeof(struct SStartWindowMessage), + CONFIG_NXWM_STARTWINDOW_MXMPRIO); + if (ret < 0) + { + gdbg("ERROR: mq_send failed: %d\n", errno); + } +} +#endif |