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Code

eeshow/gui/over.c (overlay_draw): break down into more manageable parts

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This commit is contained in:
Werner Almesberger 2016-08-20 23:56:16 -03:00
parent b7fc07b650
commit e88fd0ac6c
1 changed files with 51 additions and 33 deletions
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84
eeshow/gui/over.c
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@ -70,17 +70,63 @@ static void rrect(cairo_t *cr, double x, double y, double w, double h, int r)
}
static void background(const struct overlay *over, cairo_t *cr,
unsigned x, unsigned y, unsigned w, unsigned h)
{
const struct overlay_style *style = &over->style;
const struct color *bg = &style->bg;
const struct color *frame = &style->frame;
double center;
center = style->width / 2.0;
rrect(cr, x - center, y - center, w + style->width, h + style->width,
style->radius);
cairo_set_source_rgba(cr, bg->r, bg->g, bg->b, bg->alpha);
cairo_fill_preserve(cr);
cairo_set_source_rgba(cr, frame->r, frame->g, frame->b, frame->alpha);
cairo_set_line_width(cr, style->width);
cairo_stroke(cr);
}
static void post_aoi(struct overlay *over,
unsigned x, unsigned y, unsigned w, unsigned h)
{
struct aoi aoi_cfg = {
.x = x,
.y = y,
.w = w,
.h = h,
.hover = over->hover,
.click = over->click,
.user = over->user,
};
if (!over->hover && !over->click)
return;
if (over->aoi) {
aoi_update(over->aoi, &aoi_cfg);
} else {
over->aoi = aoi_add(over->aois, &aoi_cfg);
if (over->related) {
assert(over->related->aoi);
aoi_set_related(over->aoi, over->related->aoi);
}
}
}
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;
const struct color *bg = &style->bg;
const struct color *frame = &style->frame;
unsigned ink_w, ink_h; /* effectively used text area size */
unsigned w, h; /* box size */
int tx, ty; /* text start position */
double center;
PangoLayout *layout;
PangoFontDescription *desc;
@ -117,15 +163,7 @@ fprintf(stderr, "%d + %d %d + %d\n",
tx = x - ink_rect.x / PANGO_SCALE + style->pad;
ty = y - ink_rect.y / PANGO_SCALE + style->pad;
center = style->width / 2.0;
rrect(cr, x - center, y - center, w + style->width, h + style->width,
style->radius);
cairo_set_source_rgba(cr, bg->r, bg->g, bg->b, bg->alpha);
cairo_fill_preserve(cr);
cairo_set_source_rgba(cr, frame->r, frame->g, frame->b, frame->alpha);
cairo_set_line_width(cr, style->width);
cairo_stroke(cr);
background(over, cr, x, y, w, h);
if (style->wmax) {
cairo_new_path(cr);
@ -156,27 +194,7 @@ 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) {
struct aoi aoi_cfg = {
.x = x,
.y = y,
.w = w,
.h = h,
.hover = over->hover,
.click = over->click,
.user = over->user,
};
if (over->aoi)
aoi_update(over->aoi, &aoi_cfg);
else {
over->aoi = aoi_add(over->aois, &aoi_cfg);
if (over->related) {
assert(over->related->aoi);
aoi_set_related(over->aoi, over->related->aoi);
}
}
}
post_aoi(over, x, y, w, h);
return h;
}