mirror of
git://projects.qi-hardware.com/eda-tools.git
synced 2024-11-26 13:16:21 +02:00
95 lines
1.9 KiB
C
95 lines
1.9 KiB
C
/*
|
|
* gui-aoi.c - GUI: areas of interest
|
|
*
|
|
* Written 2016 by Werner Almesberger
|
|
* Copyright 2016 by Werner Almesberger
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
/*
|
|
* Resources:
|
|
*
|
|
* http://zetcode.com/gfx/cairo/cairobackends/
|
|
* https://developer.gnome.org/gtk3/stable/gtk-migrating-2-to-3.html
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
|
|
#include "util.h"
|
|
#include "gui-aoi.h"
|
|
|
|
|
|
static const struct aoi *hovering = NULL;
|
|
|
|
|
|
const struct aoi *aoi_add(struct aoi **aois, const struct aoi *aoi)
|
|
{
|
|
struct aoi *new;
|
|
|
|
new = alloc_type(struct aoi);
|
|
*new = *aoi;
|
|
new->next = *aois;
|
|
*aois = new;
|
|
|
|
return new;
|
|
}
|
|
|
|
|
|
bool aoi_hover(const struct aoi *aois, int x, int y)
|
|
{
|
|
const struct aoi *aoi;
|
|
|
|
if (hovering) {
|
|
if (x >= hovering->x && x < hovering->x + hovering->w &&
|
|
y >= hovering->y && y < hovering->y + hovering->h)
|
|
return 1;
|
|
hovering->hover(hovering->user, 0);
|
|
hovering = NULL;
|
|
}
|
|
|
|
for (aoi = aois; aoi; aoi = aoi->next)
|
|
if (x >= aoi->x && x < aoi->x + aoi->w &&
|
|
y >= aoi->y && y < aoi->y + aoi->h)
|
|
break;
|
|
if (aoi && aoi->hover && aoi->hover(aoi->user, 1)) {
|
|
hovering = aoi;
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
bool aoi_click(const struct aoi *aois, int x, int y)
|
|
{
|
|
const struct aoi *aoi;
|
|
|
|
if (hovering) {
|
|
hovering->hover(hovering->user, 0);
|
|
hovering = NULL;
|
|
}
|
|
for (aoi = aois; aoi; aoi = aoi->next)
|
|
if (x >= aoi->x && x < aoi->x + aoi->w &&
|
|
y >= aoi->y && y < aoi->y + aoi->h)
|
|
break;
|
|
if (aoi && aoi->click) {
|
|
aoi->click(aoi->user);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
void aoi_remove(struct aoi **aois, const struct aoi *aoi)
|
|
{
|
|
if (hovering == aoi)
|
|
aoi->hover(aoi->user, 0);
|
|
while (*aois != aoi)
|
|
aois = &(*aois)->next;
|
|
*aois = aoi->next;
|
|
free((void *) aoi);
|
|
}
|