diff options
Diffstat (limited to 'prev/popover/popover.c')
| -rw-r--r-- | prev/popover/popover.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/prev/popover/popover.c b/prev/popover/popover.c new file mode 100644 index 0000000..2c2bf66 --- /dev/null +++ b/prev/popover/popover.c @@ -0,0 +1,174 @@ +// 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; +} |