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Code

eeshow/gui-over.c: more fine-grained control over stacking direction

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This commit is contained in:
Werner Almesberger 2016-08-14 14:35:57 -03:00
parent a3301f95ae
commit d8f3319264
2 changed files with 35 additions and 16 deletions
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47
eeshow/gui-over.c
View File

@ -66,7 +66,8 @@ static void rrect(cairo_t *cr, int x, int y, int w, int h, int r)
}
struct overlay *overlay_draw(struct overlay *over, cairo_t *cr, int *x, int *y)
static unsigned overlay_draw(struct overlay *over, cairo_t *cr,
unsigned x, unsigned y, int dx, int dy)
{
const struct overlay_style *style = &over->style;
const struct color *fg = &style->fg;
@ -101,18 +102,18 @@ fprintf(stderr, "%d + %d %d + %d\n",
w = ink_w + 2 * style->pad;
h = ink_h + 2 * style->pad;
sx = *x;
sy = *y;
if (sx < 0 || sy < 0) {
sx = x;
sy = y;
if (dx < 0 || dy < 0) {
double x1, y1, x2, y2;
int sw, sh;
cairo_clip_extents(cr, &x1, &y1, &x2, &y2);
sw = x2 - x1;
sh = y2 - y1;
if (sx < 0)
if (dx < 0)
sx = sw + sx - w;
if (sy < 0)
if (dy < 0)
sy = sh + sy - h;
}
@ -156,7 +157,7 @@ fprintf(stderr, "%u(%d) %u %.60s\n", ty, ink_rect.y / PANGO_SCALE, ink_h, over->
cairo_reset_clip(cr);
g_object_unref(layout);
if (over->hover || over->click) {
if (over->hover || over->click || over->drag) {
struct aoi aoi_cfg = {
.x = sx,
.y = sy,
@ -174,21 +175,37 @@ fprintf(stderr, "%u(%d) %u %.60s\n", ty, ink_rect.y / PANGO_SCALE, ink_h, over->
over->aoi = aoi_add(over->aois, &aoi_cfg);
}
if (*y >= 0)
*y += h + style->skip;
else
*y -= h + style->skip;
return h;
}
return over->next;
void overlay_draw_all_d(struct overlay *overlays, cairo_t *cr,
unsigned x, unsigned y, int dx, int dy)
{
struct overlay *over;
unsigned h;
for (over = overlays; over; over = over->next) {
h = overlay_draw(over, cr, x, y, dx, dy);
y += dy * (h + over->style.skip);
}
}
void overlay_draw_all(struct overlay *overlays, cairo_t *cr, int x, int y)
{
struct overlay *over;
int dx = 1;
int dy = 1;
for (over = overlays; over; over = over->next)
overlay_draw(over, cr, &x, &y);
if (x < 0) {
x = -x;
dx = -1;
}
if (y < 0) {
y = -y;
dy = -1;
}
overlay_draw_all_d(overlays, cr, x, y, dx, dy);
}

4
eeshow/gui-over.h
View File

@ -41,8 +41,10 @@ struct overlay_style {
struct overlay;
struct overlay *overlay_draw(struct overlay *over, cairo_t *cr, int *x, int *y);
void overlay_draw_all_d(struct overlay *overlays, cairo_t *cr,
unsigned x, unsigned y, int dx, int dy);
void overlay_draw_all(struct overlay *overlays, cairo_t *cr, int x, int y);
struct overlay *overlay_add(struct overlay **overlays, struct aoi **aois,
bool (*hover)(void *user, bool on), void (*click)(void *user), void *user);
void overlay_text_raw(struct overlay *over, const char *s);