static void draw_picture(control obj, rect r)
{
image img;
bitmap store = NULL;
rgb old = currentcolour();
img = obj->img;
if (has_transparent_pixels(img)) {
store = newbitmap(r.width, r.height, 0);
drawto(store);
setcolour(getbackground(obj));
fillrect(r);
}
if (img) {
/* Draw the button image. */
if (ischecked(obj))
drawdarker(img, r, getrect(img));
else if (isenabled(obj))
drawimage(img, r, getrect(img));
else
drawimage(img, r, getrect(img)); /* never grey */
}
if (store != NULL) {
drawto(obj);
copyrect(store, pt(0,0), getrect(store));
del(store);
}
setcolour(old);
}
static void draw_image_button(button obj, rect r)
{
image img;
bitmap store = NULL;
rect ir;
rgb up, down;
rgb old = currentcolour();
img = obj->img;
if (has_transparent_pixels(img)) {
store = newbitmap(r.width, r.height, 0);
drawto(store);
setcolour(getbackground(obj));
fillrect(r);
}
if (img) {
ir = insetr(r,2);
if (ishighlighted(obj)) /* button is pressed */
ir.x += 1, ir.y += 1;
/* Draw the button image. */
if (ischecked(obj))
drawdarker(img, ir, getrect(img));
else if (isenabled(obj))
drawimage(img, ir, getrect(img));
else
drawgreyscale(img, ir, getrect(img));
if (ishighlighted(obj)) { /* fill the gap */
ir.x -= 1, ir.y -= 1;
setcolour(getbackground(obj));
drawline(topleft(ir),topright(ir));
drawline(topleft(ir),bottomleft(ir));
}
}
/* Draw button border. */
setcolour(getforeground(obj));
setlinewidth(1);
drawrect(r);
/* Draw button shadow. */
up = White, down = Grey;
if (ishighlighted(obj))
up = Grey, down = LightGrey;
draw_shadow(insetr(r,1), up, down, 1);
if (store != NULL) {
drawto(obj);
copyrect(store, pt(0,0), getrect(store));
del(store);
}
setcolour(old);
}
void polygon(int cx, int cy, int corners, int r, int sa)
{
int i,k;
k=sa;
plot(cx+icos(k)*r/256,cy+isin(k)*r/256);
for (i=0;i++<corners;k=(k+360/corners)%360)
drawto(cx+icos(k)*r/256,cy+isin(k)*r/256);
drawto(cx+icos(sa)*r/256,cy+isin(sa)*r/256);
}
void drawlobes (double a, double b, double l)
{
double r, theta;
double x, y;
int i;
moveto (Homex + a + b, Homey);
for (i = 1; i <= 360; i++) {
theta = i * RADIANS;
r = a + (b * cos (l * theta));
x = r * cos (theta);
y = r * sin (theta);
drawto (Homex + x, Homey + y);
}
}
/*
* Handle the events from a message dialog, hide the window afterwards.
*/
static int handle_message_dialog(window w)
{
window old;
dialog_data *d = data(w);
old = currentdrawing();
d->hit = NOT_CHOSEN_YET;
show(w);
while (d->hit == NOT_CHOSEN_YET) {
waitevent();
doevent();
}
hide(w);
if (old) drawto(old);
return d->hit;
}
void main() {
int x, y;
clg();
for (x = 0; x < 144; x++) {
y = (int)(24 * (1.0 - sin(x / 144.0 * 3.14 * 8)));
plot(x, y);
}
sleep(1); // sleep 1 second
clg();
plot(0,24);
for (x = 0; x < 144; x++) {
y = (int)(24 * (1.0 - sin(x / 144.0 * 3.14 * 8)));
drawto(x,y);
}
while (getk() != 10) {
}; // enter key is assigned to 10 in the g800 port of z88dk
}