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box.c
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box.c
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/* Copyright (c) 2017, Piotr Durlej
* All rights reserved.
*
* 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.
*
* 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 HOLDER 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.
*/
#include <wingui_form.h>
#include <wingui.h>
#include <stdlib.h>
#include <err.h>
#define BOX_WIDTH 80
#define BOX_HEIGHT 80
static struct gadget * g;
static struct form * f;
static int dir_x = 1;
static int dir_y = 1;
static int box_x, box_y;
static int win_w = 320, win_h = 240;
static void g_redraw(struct gadget *g, int wd)
{
win_color bg;
win_color fg;
win_rgba2color(&fg, 255, 255, 255, 64);
win_rgba2color(&bg, 0, 0, 0, 255);
win_rect(wd, bg, 0, 0, win_w, box_y);
win_rect(wd, bg, 0, box_y + BOX_WIDTH, win_w, win_h - box_y - BOX_HEIGHT);
win_rect(wd, bg, 0, box_y, box_x, BOX_HEIGHT);
win_rect(wd, bg, box_x + BOX_WIDTH, box_y, win_w - BOX_WIDTH - box_x, BOX_HEIGHT);
win_rect(wd, fg, box_x, box_y, BOX_WIDTH, BOX_HEIGHT);
}
static void f_resize(struct form *f, int w, int h)
{
win_w = w;
win_h = h;
gadget_resize(g, w, h);
}
static int f_close(struct form *f)
{
exit(0);
}
int main()
{
if (win_attach())
err(255, NULL);
f = form_creat(FORM_NO_BACKGROUND | FORM_APPFLAGS, 1, -1, -1, win_w, win_h, "Box");
form_on_resize(f, f_resize);
form_on_close(f, f_close);
g = gadget_creat(f, 0, 0, win_w, win_h);
g->redraw = g_redraw;
for (;;)
{
if (box_x <= 0)
dir_x = 1;
if (box_y <= 0)
dir_y = 1;
if (box_x >= win_w - BOX_WIDTH)
dir_x = -1;
if (box_y >= win_h - BOX_HEIGHT)
dir_y = -1;
box_x += dir_x;
box_y += dir_y;
gadget_redraw(g);
win_idle();
}
}