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px4_autopilot/apps/examples/nxtext/nxtext_popup.c

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/****************************************************************************
* examples/nxtext/nxtext_popup.c
*
* Copyright (C) 2011-2012 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 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <semaphore.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/nx/nx.h>
#include <nuttx/nx/nxfonts.h>
#include "nxtext_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
#define NBM_CACHE 8
#define NGLYPH_CACHE 8
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static void nxpu_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
bool morem, FAR void *arg);
static void nxpu_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size,
FAR const struct nxgl_point_s *pos,
FAR const struct nxgl_rect_s *bounds,
FAR void *arg);
#ifdef CONFIG_NX_MOUSE
static void nxpu_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
uint8_t buttons, FAR void *arg);
#endif
#ifdef CONFIG_NX_KBD
static void nxpu_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch,
FAR void *arg);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/* Pop-up NX callbacks */
static const struct nx_callback_s g_pucb =
{
nxpu_redraw, /* redraw */
nxpu_position /* position */
#ifdef CONFIG_NX_MOUSE
, nxpu_mousein /* mousein */
#endif
#ifdef CONFIG_NX_KBD
, nxpu_kbdin /* my kbdin */
#endif
};
/* Pop-up state information */
static struct nxtext_state_s g_pustate;
#ifdef CONFIG_NX_KBD
static struct nxtext_bitmap_s g_pubm[NBM_CACHE];
static struct nxtext_glyph_s g_puglyph[NGLYPH_CACHE];
#endif
/* Some random numbers */
static const uint8_t g_rand8[9] =
{
0x18, 0x8d, 0x60, 0x42, 0xb7, 0xc2, 0x2d, 0xea, 0x6b
};
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: nxpu_randpos
****************************************************************************/
static fb_coord_t nxpu_randpos(fb_coord_t value)
{
static uint8_t ndx = 0;
uint8_t rand8 = g_rand8[ndx];
if (++ndx >= 9)
{
ndx = 0;
}
return (fb_coord_t)(((uint32_t)value * (uint32_t)rand8) >> 8);
}
/****************************************************************************
* Name: nxpu_setsize
****************************************************************************/
static inline int nxpu_setsize(NXWINDOW hwnd, FAR struct nxgl_size_s *size)
{
int ret = nx_setsize(hwnd, size);
if (ret < 0)
{
message("nxpu_setsize: nx_setsize failed: %d\n", errno);
g_exitcode = NXEXIT_NXSETSIZE;
}
return ret;
}
/****************************************************************************
* Name: nxpu_setposition
****************************************************************************/
static inline int nxpu_setposition(NXWINDOW hwnd, FAR struct nxgl_point_s *pos)
{
int ret = nx_setposition(hwnd, pos);
if (ret < 0)
{
message("nxpu_setposition: nx_setposition failed: %d\n", errno);
g_exitcode = NXEXIT_NXSETPOSITION;
}
return ret;
}
/****************************************************************************
* Name: nxpu_fillwindow
****************************************************************************/
static inline void nxpu_fillwindow(NXWINDOW hwnd,
FAR const struct nxgl_rect_s *rect,
FAR struct nxtext_state_s *st)
{
int ret;
int i;
ret = nx_fill(hwnd, rect, st->wcolor);
if (ret < 0)
{
message("nxpu_fillwindow: nx_fill failed: %d\n", errno);
}
/* Fill each character on the display (Only the characters within rect
* will actually be redrawn).
*/
#ifdef CONFIG_NX_KBD
nxtext_home(st);
for (i = 0; i < st->nchars; i++)
{
nxtext_fillchar(hwnd, rect, st, g_puhfont, &st->bm[i]);
}
#endif
}
/****************************************************************************
* Name: nxpu_redraw
****************************************************************************/
static void nxpu_redraw(NXWINDOW hwnd, FAR const struct nxgl_rect_s *rect,
bool more, FAR void *arg)
{
FAR struct nxtext_state_s *st = (FAR struct nxtext_state_s *)arg;
gvdbg("hwnd=%p rect={(%d,%d),(%d,%d)} more=%s\n",
hwnd, rect->pt1.x, rect->pt1.y, rect->pt2.x, rect->pt2.y,
more ? "true" : "false");
nxpu_fillwindow(hwnd, rect, st);
}
/****************************************************************************
* Name: nxpu_position
****************************************************************************/
static void nxpu_position(NXWINDOW hwnd, FAR const struct nxgl_size_s *size,
FAR const struct nxgl_point_s *pos,
FAR const struct nxgl_rect_s *bounds,
FAR void *arg)
{
FAR struct nxtext_state_s *st = (FAR struct nxtext_state_s *)arg;
/* Report the position */
gvdbg("hwnd=%p size=(%d,%d) pos=(%d,%d) bounds={(%d,%d),(%d,%d)}\n",
hwnd, size->w, size->h, pos->x, pos->y,
bounds->pt1.x, bounds->pt1.y, bounds->pt2.x, bounds->pt2.y);
/* Save the window position and size */
st->wpos.x = pos->x;
st->wpos.y = pos->y;
st->wsize.w = size->w;
st->wsize.h = size->h;
}
/****************************************************************************
* Name: nxpu_mousein
****************************************************************************/
#ifdef CONFIG_NX_MOUSE
static void nxpu_mousein(NXWINDOW hwnd, FAR const struct nxgl_point_s *pos,
uint8_t buttons, FAR void *arg)
{
message("nxpu_mousein: hwnd=%p pos=(%d,%d) button=%02x\n",
hwnd, pos->x, pos->y, buttons);
}
#endif
/****************************************************************************
* Name: nxpu_puts
****************************************************************************/
static inline void nxpu_puts(NXWINDOW hwnd, FAR struct nxtext_state_s *st,
uint8_t nch, FAR const uint8_t *ch)
{
nxtext_home(st);
while (nch--)
{
nxtext_putc(hwnd, st, g_puhfont, *ch++);
}
}
/****************************************************************************
* Name: nxpu_kbdin
****************************************************************************/
#ifdef CONFIG_NX_KBD
static void nxpu_kbdin(NXWINDOW hwnd, uint8_t nch, FAR const uint8_t *ch,
FAR void *arg)
{
FAR struct nxtext_state_s *st = (FAR struct nxtext_state_s *)arg;
gvdbg("hwnd=%p nch=%d\n", hwnd, nch);
nxpu_puts(hwnd, st, nch, ch);
}
#endif
/****************************************************************************
* Name: nxpu_initstate
****************************************************************************/
static inline void nxpu_initstate(void)
{
#ifdef CONFIG_NX_KBD
FAR const struct nx_font_s *fontset;
#endif
/* Initialize the color (used for redrawing the window) */
memset(&g_pustate, 0, sizeof(struct nxtext_state_s));
g_pustate.wcolor[0] = CONFIG_EXAMPLES_NXTEXT_PUCOLOR;
g_pustate.fcolor[0] = CONFIG_EXAMPLES_NXTEXT_PUFONTCOLOR;
/* Get information about the font set being used and save this in the
* state structure
*/
#ifdef CONFIG_NX_KBD
fontset = nxf_getfontset(g_puhfont);
g_pustate.fheight = fontset->mxheight;
g_pustate.fwidth = fontset->mxwidth;
g_pustate.spwidth = fontset->spwidth;
/* Set up the text caches */
g_pustate.maxchars = NBM_CACHE;
g_pustate.maxglyphs = NGLYPH_CACHE;
g_pustate.bm = g_pubm;
g_pustate.glyph = g_puglyph;
/* Set the first display position */
nxtext_home(&g_pustate);
#endif
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxpu_open
****************************************************************************/
NXWINDOW nxpu_open(void)
{
NXWINDOW hwnd;
struct nxgl_size_s size;
struct nxgl_point_s pt;
int ret;
/* Create a pop-up window */
message("nxpu_open: Create pop-up\n");
nxpu_initstate();
hwnd = nx_openwindow(g_hnx, &g_pucb, (FAR void *)&g_pustate);
gvdbg("hwnd=%p\n", hwnd);
if (!hwnd)
{
message("nxpu_open: nx_openwindow failed: %d\n", errno);
g_exitcode = NXEXIT_NXOPENWINDOW;
goto errout_with_state;
}
/* Select the size of the pop-up window */
size.w = g_xres / 4;
size.h = g_yres / 4;
/* Select a random position for pop-up window */
pt.x = nxpu_randpos(g_xres - size.w);
pt.y = nxpu_randpos(g_yres - size.h);
/* Set the position for the pop-up window */
message("nxpu_open: Set pop-up postion to (%d,%d)\n", pt.x, pt.y);
ret = nxpu_setposition(hwnd, &pt);
if (ret < 0)
{
goto errout_with_hwnd;
}
/* Set the size of the pop-up window */
gvdbg("Set pop-up size to (%d,%d)\n", size.w, size.h);
ret = nxpu_setsize(hwnd, &size);
if (ret < 0)
{
goto errout_with_hwnd;
}
return hwnd;
errout_with_hwnd:
(void)nx_closewindow(hwnd);
errout_with_state:
return NULL;
}
/****************************************************************************
* Name: nxpu_close
****************************************************************************/
int nxpu_close(NXWINDOW hwnd)
{
int ret;
ret = nx_closewindow(hwnd);
if (ret < 0)
{
message("nxpu_close: nx_closewindow failed: %d\n", errno);
g_exitcode = NXEXIT_NXCLOSEWINDOW;
return ret;
}
return OK;
}