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examples/nanoxcalc: add Nano-X calculator example
* Port the nxcalc demo from Microwindows * Connects to the Nano-X server started by examples/nanoxterm * Requires CONFIG_LIBC_FLOATINGPOINT for the result formatting Signed-off-by: Acfboy <AcfboyU@outlook.com>
This commit is contained in:
Acfboy
Alan C. Assis
parent
edb4d26663
commit
d79e503612
4 changed files with 598 additions and 0 deletions
28
examples/nanoxcalc/Kconfig
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28
examples/nanoxcalc/Kconfig
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@ -0,0 +1,28 @@
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config EXAMPLES_NANOXCALC
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tristate "Nano-X calculator example"
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default n
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depends on MICROWINDOWS_NANOX && LIBC_FLOATINGPOINT
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---help---
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Enable the Nano-X calculator example application. It is a
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port of the nxcalc demo from Microwindows which connects to
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the Nano-X server started by examples/nanoxterm and shows
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a calculator keypad operated by the mouse or keyboard.
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if EXAMPLES_NANOXCALC
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config EXAMPLES_NANOXCALC_PROGNAME
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string "Program name"
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default "nanoxcalc"
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---help---
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This is the name of the program that will be used when the NSH ELF
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program is installed.
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config EXAMPLES_NANOXCALC_PRIORITY
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int "Nano-X calculator task priority"
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default 100
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config EXAMPLES_NANOXCALC_STACKSIZE
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int "Nano-X calculator stack size"
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default 16384
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endif
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25
examples/nanoxcalc/Make.defs
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25
examples/nanoxcalc/Make.defs
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@ -0,0 +1,25 @@
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############################################################################
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# apps/examples/nanoxcalc/Make.defs
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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ifneq ($(CONFIG_EXAMPLES_NANOXCALC),)
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CONFIGURED_APPS += $(APPDIR)/examples/nanoxcalc
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endif
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35
examples/nanoxcalc/Makefile
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35
examples/nanoxcalc/Makefile
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@ -0,0 +1,35 @@
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############################################################################
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# apps/examples/nanoxcalc/Makefile
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#
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# SPDX-License-Identifier: Apache-2.0
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership. The
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# ASF licenses this file to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance with the
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# License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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############################################################################
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include $(APPDIR)/Make.defs
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PROGNAME = $(CONFIG_EXAMPLES_NANOXCALC_PROGNAME)
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PRIORITY = $(CONFIG_EXAMPLES_NANOXCALC_PRIORITY)
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STACKSIZE = $(CONFIG_EXAMPLES_NANOXCALC_STACKSIZE)
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MODULE = $(CONFIG_EXAMPLES_NANOXCALC)
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# Port of the upstream nxcalc demo (src/demos/nanox/nxcalc.c)
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MAINSRC = nxcalc.c
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CFLAGS += -Wno-undef
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include $(APPDIR)/Application.mk
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510
examples/nanoxcalc/nxcalc.c
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510
examples/nanoxcalc/nxcalc.c
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/****************************************************************************
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* apps/examples/nanoxcalc/nxcalc.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* nxcalc - Simple graphical calculator for Microwindows / Nano-X
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*
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* Inspired by the nxclock example (Greg Haerr).
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*
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* Run inside an environment where the Nano-X server is available.
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <math.h>
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#include "nano-X.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#define WIN_W 160
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#define WIN_H 200
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#define DISP_H 35
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#define COLS 4
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#define ROWS 5
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static GR_WINDOW_ID win;
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static GR_GC_ID gc_text;
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static GR_GC_ID gc_button;
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static GR_GC_ID gc_button_press;
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static GR_GC_ID gc_border;
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/* calculator state */
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static char display[128];
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static double acc = 0.0;
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static char pending_op = 0;
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static int entering = 0;
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static int dot_entered = 0;
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/* button layout */
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static char *btn_labels[] =
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{
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"C", "<-", "+/-", "/", "7", "8", "9", "*",
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"4", "5", "6", "-", "1", "2", "3", "+",
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"0", ".", "=", NULL
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};
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static GR_RECT btn_rects[ROWS][COLS];
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/* function prototypes */
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static void redraw(void);
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static void press_button(const char *label);
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static void compute_equal(void);
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static void apply_pending(double val);
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static double display_to_double(void)
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{
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if (strlen(display) == 0)
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{
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return 0.0;
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}
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return strtod(display, NULL);
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}
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static void set_display_from_double(double v)
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{
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char buf[128];
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double iv;
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if (fabs(v) < 1e-12)
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{
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v = 0.0;
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}
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if (modf(v, &iv) == 0.0)
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{
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snprintf(buf, sizeof(buf), "%.0f", v);
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}
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else
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{
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snprintf(buf, sizeof(buf), "%.10g", v);
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}
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strncpy(display, buf, sizeof(display) - 1);
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display[sizeof(display) - 1] = '\0';
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}
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/* ========================= MAIN ========================= */
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int main(int argc, char **argv)
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{
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GR_EVENT event;
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int r;
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int c;
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int idx;
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if (GrOpen() < 0)
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{
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fprintf(stderr, "nxcalc: cannot open Nano-X\n");
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return 1;
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}
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win = GrNewWindowEx(GR_WM_PROPS_APPWINDOW, "nxcalc", GR_ROOT_WINDOW_ID, 10,
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10, WIN_W, WIN_H, GrGetSysColor(GR_COLOR_WINDOW));
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GrSelectEvents(win,
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GR_EVENT_MASK_EXPOSURE | GR_EVENT_MASK_BUTTON_DOWN |
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GR_EVENT_MASK_BUTTON_UP | GR_EVENT_MASK_CLOSE_REQ);
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gc_text = GrNewGC();
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gc_button = GrNewGC();
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gc_button_press = GrNewGC();
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gc_border = GrNewGC();
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GrSetGCForeground(gc_text, GrGetSysColor(GR_COLOR_WINDOWTEXT));
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GrSetGCBackground(gc_text, GrGetSysColor(GR_COLOR_WINDOW));
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GrSetGCForeground(gc_button, GrGetSysColor(GR_COLOR_BTNFACE));
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GrSetGCBackground(gc_button, GrGetSysColor(GR_COLOR_WINDOW));
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GrSetGCForeground(gc_button_press, GrGetSysColor(GR_COLOR_BTNSHADOW));
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GrSetGCBackground(gc_button_press, GrGetSysColor(GR_COLOR_WINDOW));
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GrSetGCForeground(gc_border, GrGetSysColor(GR_COLOR_BTNTEXT));
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GrSetGCBackground(gc_border, GrGetSysColor(GR_COLOR_WINDOW));
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/* init state */
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display[0] = '\0';
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acc = 0.0;
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pending_op = 0;
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entering = 0;
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dot_entered = 0;
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/* layout buttons */
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int grid_x = 12;
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int grid_y = DISP_H + 10;
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int grid_w = WIN_W - 20;
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int grid_h = WIN_H - DISP_H - 20;
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int cell_w = grid_w / COLS;
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int cell_h = grid_h / ROWS;
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idx = 0;
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for (r = 0; r < ROWS; r++)
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{
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for (c = 0; c < COLS; c++)
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{
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int x = grid_x + c * cell_w;
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int y = grid_y + r * cell_h;
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btn_rects[r][c].x = x;
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btn_rects[r][c].y = y;
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btn_rects[r][c].width = cell_w - 6;
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btn_rects[r][c].height = cell_h - 6;
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idx++;
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}
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}
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GrMapWindow(win);
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set_display_from_double(0.0);
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redraw();
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while (1)
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{
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GrGetNextEvent(&event);
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switch (event.type)
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{
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case GR_EVENT_TYPE_EXPOSURE:
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{
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redraw();
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break;
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}
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case GR_EVENT_TYPE_BUTTON_DOWN:
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{
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int mx = event.button.x;
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int my = event.button.y;
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int found = 0;
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for (r = 0; r < ROWS && !found; r++)
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{
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for (c = 0; c < COLS && !found; c++)
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{
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GR_RECT *rc = &btn_rects[r][c];
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if (mx >= rc->x && mx <= rc->x + rc->width &&
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my >= rc->y && my <= rc->y + rc->height)
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{
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GrFillRect(win, gc_button_press, rc->x, rc->y,
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rc->width, rc->height);
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found = 1;
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}
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}
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}
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break;
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}
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case GR_EVENT_TYPE_BUTTON_UP:
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{
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int mx = event.button.x;
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int my = event.button.y;
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int found = 0;
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for (r = 0; r < ROWS && !found; r++)
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{
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for (c = 0; c < COLS && !found; c++)
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{
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GR_RECT *rc = &btn_rects[r][c];
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if (mx >= rc->x && mx <= rc->x + rc->width &&
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my >= rc->y && my <= rc->y + rc->height)
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{
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idx = r * COLS + c;
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const char *lbl = (idx <
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(int)(sizeof(btn_labels) /
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sizeof(btn_labels[0]))?
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btn_labels[idx] : NULL);
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if (lbl)
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{
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press_button(lbl);
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redraw();
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}
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found = 1;
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}
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}
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}
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break;
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}
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case GR_EVENT_TYPE_CLOSE_REQ:
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{
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GrClose();
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return 0;
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}
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}
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}
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return 0;
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}
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/* ========================= UI DRAWING ========================= */
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static void redraw(void)
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{
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int r;
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int c;
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int idx;
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int tw;
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int th;
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int tb;
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/* display area */
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GrSetGCForeground(gc_button, GrGetSysColor(GR_COLOR_WINDOW));
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GrFillRect(win, gc_button, 5, 5, WIN_W - 10, DISP_H - 10);
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GrSetGCForeground(gc_border, GrGetSysColor(GR_COLOR_BTNSHADOW));
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GrRect(win, gc_border, 5, 5, WIN_W - 11, DISP_H - 10);
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/* display text (right aligned) */
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GrGetGCTextSize(gc_text, display, strlen(display), GR_TFTOP, &tw,
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&th, &tb);
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int x = WIN_W - 12 - tw;
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if (x < 10)
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{
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x = 10;
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}
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GrText(win, gc_text, x, 5 + (DISP_H / 2) - 10, display, strlen(display),
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GR_TFTOP);
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/* draw buttons */
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idx = 0;
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GrSetGCForeground(gc_button, GrGetSysColor(GR_COLOR_BTNFACE));
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for (r = 0; r < ROWS; r++)
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{
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for (c = 0; c < COLS; c++)
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{
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GR_RECT *rc = &btn_rects[r][c];
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char *lbl = (idx <
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(int)(sizeof(btn_labels) /
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sizeof(btn_labels[0]))? btn_labels[idx] : NULL);
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GrSetGCForeground(gc_button, GrGetSysColor(GR_COLOR_WINDOW));
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GrFillRect(win, gc_button, rc->x, rc->y, rc->width, rc->height);
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GrSetGCForeground(gc_border, GrGetSysColor(GR_COLOR_BTNSHADOW));
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GrRect(win, gc_border, rc->x, rc->y, rc->width, rc->height);
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if (lbl)
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{
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GrGetGCTextSize(gc_text, lbl, strlen(lbl), GR_TFTOP, &tw, &th,
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&tb);
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GrText(win, gc_text, rc->x + rc->width / 2 - tw / 2,
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rc->y + rc->height / 2 - 6, lbl, strlen(lbl), GR_TFTOP);
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}
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idx++;
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}
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}
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GrFlush();
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}
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/* ========================= LOGIC ========================= */
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static void press_button(const char *label)
|
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{
|
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char tmp[128];
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double val;
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if (strcmp(label, "C") == 0)
|
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{
|
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display[0] = '\0';
|
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acc = 0.0;
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pending_op = 0;
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entering = 0;
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dot_entered = 0;
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set_display_from_double(0.0);
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return;
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}
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if (strcmp(label, "<-") == 0)
|
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{
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int l = strlen(display);
|
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if (l > 0)
|
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{
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if (display[l - 1] == '.')
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{
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dot_entered = 0;
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}
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display[l - 1] = '\0';
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if (strlen(display) == 0)
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{
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set_display_from_double(0.0);
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}
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}
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entering = (strlen(display) > 0);
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return;
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}
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if (strcmp(label, "+/-") == 0)
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{
|
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if (display[0] == '-')
|
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{
|
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memmove(display, display + 1, strlen(display));
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}
|
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else
|
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{
|
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if (strlen(display) == 0 || strcmp(display, "0") == 0)
|
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{
|
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return;
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}
|
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|
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snprintf(tmp, sizeof(tmp), "-%s", display);
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strncpy(display, tmp, sizeof(display) - 1);
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}
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return;
|
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}
|
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|
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if (strcmp(label, "+") == 0 || strcmp(label, "-") == 0 || strcmp(label,
|
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"*") == 0 || strcmp(label, "/") == 0)
|
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{
|
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val = display_to_double();
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if (pending_op == 0)
|
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{
|
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acc = val;
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}
|
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else
|
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{
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apply_pending(val);
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}
|
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|
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pending_op = label[0];
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entering = 0;
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dot_entered = 0;
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||||
set_display_from_double(acc);
|
||||
return;
|
||||
}
|
||||
|
||||
if (strcmp(label, "=") == 0)
|
||||
{
|
||||
compute_equal();
|
||||
return;
|
||||
}
|
||||
|
||||
if (strcmp(label, ".") == 0)
|
||||
{
|
||||
if (!dot_entered)
|
||||
{
|
||||
if (!entering)
|
||||
{
|
||||
strcpy(display, "0.");
|
||||
entering = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
strncat(display, ".", sizeof(display) - strlen(display) - 1);
|
||||
}
|
||||
|
||||
dot_entered = 1;
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
if (strlen(label) == 1 && isdigit((unsigned char)label[0]))
|
||||
{
|
||||
if (!entering)
|
||||
{
|
||||
display[0] = label[0];
|
||||
display[1] = '\0';
|
||||
entering = 1;
|
||||
}
|
||||
else
|
||||
{
|
||||
if (strcmp(display, "0") == 0 && label[0] != '0' && !dot_entered)
|
||||
{
|
||||
display[0] = label[0];
|
||||
display[1] = '\0';
|
||||
}
|
||||
else if (strlen(display) < sizeof(display) - 2)
|
||||
{
|
||||
strncat(display, label, 1);
|
||||
}
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
static void apply_pending(double val)
|
||||
{
|
||||
if (pending_op == '+')
|
||||
{
|
||||
acc = acc + val;
|
||||
}
|
||||
else if (pending_op == '-')
|
||||
{
|
||||
acc = acc - val;
|
||||
}
|
||||
else if (pending_op == '*')
|
||||
{
|
||||
acc = acc * val;
|
||||
}
|
||||
else if (pending_op == '/')
|
||||
{
|
||||
if (val == 0.0)
|
||||
{
|
||||
strncpy(display, "Error", sizeof(display) - 1);
|
||||
display[sizeof(display) - 1] = '\0';
|
||||
pending_op = 0;
|
||||
entering = 0;
|
||||
dot_entered = 0;
|
||||
redraw();
|
||||
return;
|
||||
}
|
||||
else
|
||||
{
|
||||
acc = acc / val;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void compute_equal(void)
|
||||
{
|
||||
double val = display_to_double();
|
||||
|
||||
if (pending_op != 0)
|
||||
{
|
||||
apply_pending(val);
|
||||
pending_op = 0;
|
||||
set_display_from_double(acc);
|
||||
entering = 0;
|
||||
dot_entered = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
set_display_from_double(val);
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue