270 lines
7.8 KiB
C
270 lines
7.8 KiB
C
/****************************************************************************
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* graphics/nxmu/nxmu__mouse.c
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*
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* Copyright (C) 2008-2009, 2011-2012, 2018 Gregory Nutt. All rights
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* reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/nx/nxglib.h>
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#include <nuttx/nx/nx.h>
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#include "nxmu.h"
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#ifdef CONFIG_NX_XYINPUT
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/* REVISIT: These globals will prevent this code from being used in an
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* environment with more than one display. FIX ME!
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*/
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static struct nxgl_point_s g_mpos;
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static struct nxgl_point_s g_mrange;
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static uint8_t g_mbutton;
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static FAR struct nxbe_window_s *g_mwnd;
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxmu_revalidate_g_mwnd
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*
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* Description:
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* Check if the window pointed to by g_mwnd still exists. If it does,
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* this function returns a pointer to it. Otherwise returns NULL.
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*
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****************************************************************************/
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static struct nxbe_window_s *
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nxmu_revalidate_g_mwnd(FAR struct nxbe_window_s *wnd)
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{
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if (!g_mwnd)
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{
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return NULL;
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}
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while (wnd)
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{
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if (wnd == g_mwnd)
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{
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return wnd;
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}
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wnd = wnd->below;
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}
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return NULL;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxmu_mouseinit
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*
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* Description:
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* Initialize with the mouse in the center of the display
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*
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****************************************************************************/
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void nxmu_mouseinit(int x, int y)
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{
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g_mrange.x = x;
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g_mrange.y = y;
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g_mpos.x = x / 2;
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g_mpos.y = y / 2;
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g_mbutton = 0;
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}
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/****************************************************************************
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* Name: nxmu_mousereport
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*
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* Description:
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* Report mouse position info to the specified window
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*
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* Input Parameters:
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* wnd - The window to receive the mouse report
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*
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* Returned Value:
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* 0: Mouse report sent; >0: Mouse report not sent; <0: An error occurred
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*
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****************************************************************************/
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int nxmu_mousereport(struct nxbe_window_s *wnd)
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{
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struct nxclimsg_mousein_s outmsg;
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/* Does this window support mouse callbacks? */
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if (wnd->cb->mousein)
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{
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/* Yes.. Is the mouse position visible in this window? */
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if (nxbe_isvisible(wnd, &g_mpos))
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{
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/* Yes... Convert the mouse position to window relative
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* coordinates and send it to the client
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*/
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outmsg.msgid = NX_CLIMSG_MOUSEIN;
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outmsg.wnd = wnd;
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outmsg.buttons = g_mbutton;
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nxgl_vectsubtract(&outmsg.pos, &g_mpos, &wnd->bounds.pt1);
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return nxmu_sendclientwindow(wnd, &outmsg,
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sizeof(struct nxclimsg_mousein_s));
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}
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}
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/* No error occurred, but the mouse report was not sent */
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return 1;
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}
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/****************************************************************************
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* Name: nxmu_mousein
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*
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* Description:
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* New positional data has been received from the thread or interrupt
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* handler that manages some kind of pointing hardware. Route that
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* positional data to the appropriate window client.
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*
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****************************************************************************/
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int nxmu_mousein(FAR struct nxmu_state_s *nxmu,
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FAR const struct nxgl_point_s *pos, int buttons)
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{
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FAR struct nxbe_window_s *wnd;
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nxgl_coord_t x = pos->x;
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nxgl_coord_t y = pos->y;
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uint8_t oldbuttons;
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int ret;
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/* Clip x and y to within the bounding rectangle */
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if (x < 0)
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{
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x = 0;
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}
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else if (x >= g_mrange.x)
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{
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x = g_mrange.x - 1;
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}
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if (y < 0)
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{
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y = 0;
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}
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else if (y >= g_mrange.y)
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{
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y = g_mrange.y - 1;
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}
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/* Look for any change in values */
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if (x != g_mpos.x || y != g_mpos.y || buttons != g_mbutton)
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{
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/* Update the mouse value */
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oldbuttons = g_mbutton;
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g_mpos.x = x;
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g_mpos.y = y;
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g_mbutton = buttons;
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/* If a button is already down, regard this as part of a mouse drag
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* event. Pass all the following events to the window where the drag
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* started in, including the final button release event.
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*/
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if (oldbuttons != 0)
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{
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g_mwnd = nxmu_revalidate_g_mwnd(nxmu->be.topwnd);
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if (g_mwnd != NULL && g_mwnd->cb->mousein)
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{
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struct nxclimsg_mousein_s outmsg;
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outmsg.msgid = NX_CLIMSG_MOUSEIN;
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outmsg.wnd = g_mwnd;
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outmsg.buttons = g_mbutton;
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nxgl_vectsubtract(&outmsg.pos, &g_mpos, &g_mwnd->bounds.pt1);
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return nxmu_sendclientwindow(g_mwnd, &outmsg, sizeof(struct nxclimsg_mousein_s));
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}
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else
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{
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/* Ignore events until the button is released */
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return OK;
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}
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}
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/* Pick the window to receive the mouse event. Start with the top
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* window and go down. Stop with the first window that gets the mouse
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* report
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*/
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for (wnd = nxmu->be.topwnd; wnd; wnd = wnd->below)
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{
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/* The background window normally has no callback structure (unless
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* a client has taken control of the background via nx_requestbkgd()).
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*/
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if (wnd->cb)
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{
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ret = nxmu_mousereport(wnd);
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if (ret == 0)
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{
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break;
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}
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}
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}
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g_mwnd = wnd;
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}
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return OK;
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}
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#endif /* CONFIG_NX_XYINPUT */
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