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// 9 october 2014
#include <stdlib.h>
#include <stdint.h>
#include "popover.h"
#define ARROWHEIGHT 8
#define ARROWWIDTH 8 /* should be the same for smooth lines on Windows (TODO is there a better/nicer looking way?) */
struct popover {
void *gopopover;
// a nice consequence of this design is that it allows four arrowheads to jut out at once; in practice only one will ever be used, but hey — simple implementation!
intptr_t arrowLeft;
intptr_t arrowTop;
intptr_t arrowRight;
intptr_t arrowBottom;
};
popover *popoverDataNew(void *gopopover)
{
popover *p;
p = (popover *) malloc(sizeof (popover));
if (p != NULL) {
p->gopopover = gopopover;
p->arrowLeft = -1;
p->arrowTop = 20;//TODO-1;
p->arrowRight = -1;
p->arrowBottom = -1;
}
return p;
}
int popoverMakeFramePoints(popover *p, intptr_t width, intptr_t height, popoverPoint pt[20])
{
int n;
intptr_t xmax, ymax;
n = 0;
// figure out the xmax and ymax of the box
xmax = width;
if (p->arrowRight >= 0)
xmax -= ARROWWIDTH;
ymax = height;
if (p->arrowBottom >= 0)
ymax -= ARROWHEIGHT;
// the first point is either at (0,0), (0,arrowHeight), (arrowWidth,0), or (arrowWidth,arrowHeight)
pt[n].x = 0;
if (p->arrowLeft >= 0)
pt[n].x = ARROWWIDTH;
pt[n].y = 0;
if (p->arrowTop >= 0)
pt[n].y = ARROWHEIGHT;
n++;
// the left side
pt[n].x = pt[n - 1].x;
if (p->arrowLeft >= 0) {
pt[n].y = pt[n - 1].y + p->arrowLeft;
n++;
pt[n].x = pt[n - 1].x - ARROWWIDTH;
pt[n].y = pt[n - 1].y + ARROWHEIGHT;
n++;
pt[n].x = pt[n - 1].x + ARROWWIDTH;
pt[n].y = pt[n - 1].y + ARROWHEIGHT;
n++;
pt[n].x = pt[n - 1].x;
}
pt[n].y = ymax;
n++;
// the bottom side
pt[n].y = pt[n - 1].y;
if (p->arrowBottom >= 0) {
pt[n].x = pt[n - 1].x + p->arrowBottom;
n++;
pt[n].x = pt[n - 1].x + ARROWWIDTH;
pt[n].y = pt[n - 1].y + ARROWHEIGHT;
n++;
pt[n].x = pt[n - 1].x + ARROWWIDTH;
pt[n].y = pt[n - 1].y - ARROWHEIGHT;
n++;
pt[n].y = pt[n - 1].y;
}
pt[n].x = xmax;
n++;
// the right side
pt[n].x = pt[n - 1].x;
if (p->arrowRight >= 0) {
pt[n].y = pt[0].y + p->arrowRight + (ARROWHEIGHT * 2);
n++;
pt[n].x = pt[n - 1].x + ARROWWIDTH;
pt[n].y = pt[n - 1].y - ARROWHEIGHT;
n++;
pt[n].x = pt[n - 1].x - ARROWWIDTH;
pt[n].y = pt[n - 1].y - ARROWHEIGHT;
n++;
pt[n].x = pt[n - 1].x;
}
pt[n].y = pt[0].y;
n++;
// the top side
pt[n].y = pt[n - 1].y;
if (p->arrowTop >= 0) {
pt[n].x = pt[0].x + p->arrowTop + (ARROWWIDTH * 2);
n++;
pt[n].x = pt[n - 1].x - ARROWWIDTH;
pt[n].y = pt[n - 1].y - ARROWHEIGHT;
n++;
pt[n].x = pt[n - 1].x - ARROWWIDTH;
pt[n].y = pt[n - 1].y + ARROWHEIGHT;
n++;
pt[n].y = pt[n - 1].y;
}
pt[n].x = pt[0].x;
n++;
return n;
}
void popoverWindowSizeToClientSize(popover *p, popoverRect *r)
{
r->left++;
r->top++;
r->right--;
r->bottom--;
if (p->arrowLeft >= 0)
r->left += ARROWWIDTH;
if (p->arrowRight >= 0)
r->right -= ARROWWIDTH;
if (p->arrowTop >= 0)
r->top += ARROWHEIGHT;
if (p->arrowBottom >= 0)
r->bottom -= ARROWHEIGHT;
}
// TODO window edge detection
popoverRect popoverPointAt(popover *p, popoverRect control, intptr_t width, intptr_t height, unsigned int side)
{
intptr_t x, y;
popoverRect out;
// account for border
width += 2;
height += 2;
p->arrowLeft = -1;
p->arrowRight = -1;
p->arrowTop = -1;
p->arrowBottom = -1;
// TODO right and bottom
switch (side) {
case popoverPointLeft:
width += ARROWWIDTH;
p->arrowLeft = height / 2 - ARROWHEIGHT;
x = control.right;
y = control.top - ((height - (control.bottom - control.top)) / 2);
break;
case popoverPointTop:
height += ARROWHEIGHT;
p->arrowTop = width / 2 - ARROWWIDTH;
x = control.left - ((width - (control.right - control.left)) / 2);
y = control.bottom;
break;
}
out.left = x;
out.top = y;
out.right = x + width;
out.bottom = y + height;
return out;
}
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