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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <cursor.h>
#include <event.h>
#define W Borderwidth
static Image *tmp[4];
static Image *red;
static Cursor sweep={
{-7, -7},
{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE0, 0x07,
0xE0, 0x07, 0xE0, 0x07, 0xE3, 0xF7, 0xE3, 0xF7,
0xE3, 0xE7, 0xE3, 0xF7, 0xE3, 0xFF, 0xE3, 0x7F,
0xE0, 0x3F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,},
{0x00, 0x00, 0x7F, 0xFE, 0x40, 0x02, 0x40, 0x02,
0x40, 0x02, 0x40, 0x02, 0x40, 0x02, 0x41, 0xE2,
0x41, 0xC2, 0x41, 0xE2, 0x41, 0x72, 0x40, 0x38,
0x40, 0x1C, 0x40, 0x0E, 0x7F, 0xE6, 0x00, 0x00,}
};
static
void
brects(Rectangle r, Rectangle rp[4])
{
if(Dx(r) < 2*W)
r.max.x = r.min.x+2*W;
if(Dy(r) < 2*W)
r.max.y = r.min.y+2*W;
rp[0] = Rect(r.min.x, r.min.y, r.max.x, r.min.y+W);
rp[1] = Rect(r.min.x, r.max.y-W, r.max.x, r.max.y);
rp[2] = Rect(r.min.x, r.min.y+W, r.min.x+W, r.max.y-W);
rp[3] = Rect(r.max.x-W, r.min.y+W, r.max.x, r.max.y-W);
}
Rectangle
egetrect(int but, Mouse *m)
{
Rectangle r, rc;
but = 1<<(but-1);
esetcursor(&sweep);
while(m->buttons)
*m = emouse();
while(!(m->buttons & but)){
*m = emouse();
if(m->buttons & (7^but))
goto Return;
}
r.min = m->xy;
r.max = m->xy;
do{
rc = canonrect(r);
edrawgetrect(rc, 1);
*m = emouse();
edrawgetrect(rc, 0);
r.max = m->xy;
}while(m->buttons == but);
Return:
esetcursor(0);
if(m->buttons & (7^but)){
rc.min.x = rc.max.x = 0;
rc.min.y = rc.max.y = 0;
while(m->buttons)
*m = emouse();
}
return rc;
}
static
void
freetmp(void)
{
freeimage(tmp[0]);
freeimage(tmp[1]);
freeimage(tmp[2]);
freeimage(tmp[3]);
freeimage(red);
tmp[0] = tmp[1] = tmp[2] = tmp[3] = red = nil;
}
void
edrawgetrect(Rectangle rc, int up)
{
int i;
Rectangle r, rects[4];
if(up && tmp[0]!=nil)
if(Dx(tmp[0]->r)<Dx(rc) || Dy(tmp[2]->r)<Dy(rc))
freetmp();
if(tmp[0] == 0){
r = Rect(0, 0, Dx(screen->r), W);
tmp[0] = allocimage(display, r, screen->chan, 0, -1);
tmp[1] = allocimage(display, r, screen->chan, 0, -1);
r = Rect(0, 0, W, Dy(screen->r));
tmp[2] = allocimage(display, r, screen->chan, 0, -1);
tmp[3] = allocimage(display, r, screen->chan, 0, -1);
red = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DRed);
if(tmp[0]==0 || tmp[1]==0 || tmp[2]==0 || tmp[3]==0 || red==0)
drawerror(display, "getrect: allocimage failed");
}
brects(rc, rects);
if(!up){
for(i=0; i<4; i++)
draw(screen, rects[i], tmp[i], nil, ZP);
return;
}
for(i=0; i<4; i++){
draw(tmp[i], Rect(0, 0, Dx(rects[i]), Dy(rects[i])), screen, nil, rects[i].min);
draw(screen, rects[i], red, nil, ZP);
}
}
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