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Cleanup: pass gasmix by value

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In a previous commit, the get_gasmix_* functions were changed to
return by value. For consistency, also pass gasmix by value.

Note that on common 64-bit platforms struct gasmix is the size
of a pointer [2 * 32 bit vs. 64 bit] and therefore uses the
same space on the stack. On 32-bit platforms, the stack use
is probably doubled, but in return a dereference is avoided.

Supporting arbitrary gas-mixes (H2, Ar, ...) will be such an
invasive change that going back to pointers is probably the
least of our worries.

This commit is a step in const-ifying input parameters (passing
by value is the ultimate way of signaling that the input parameter
will not be changed [unless there are references to said parameter]).

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2018-08-16 19:10:10 +02:00 • committed by Dirk Hohndel
parent 5c4569247a
commit 360f07e453
28 changed files with 214 additions and 215 deletions
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16
profile-widget/diveeventitem.cpp
View file

@ -51,7 +51,7 @@ struct event *DiveEventItem::getEvent()
return internalEvent;
}
void DiveEventItem::setEvent(struct event *ev, struct gasmix *lastgasmix)
void DiveEventItem::setEvent(struct event *ev, struct gasmix lastgasmix)
{
if (!ev)
return;
@ -63,7 +63,7 @@ void DiveEventItem::setEvent(struct event *ev, struct gasmix *lastgasmix)
recalculatePos(true);
}
void DiveEventItem::setupPixmap(struct gasmix *lastgasmix)
void DiveEventItem::setupPixmap(struct gasmix lastgasmix)
{
const IconMetrics& metrics = defaultIconMetrics();
#ifndef SUBSURFACE_MOBILE
@ -94,13 +94,13 @@ void DiveEventItem::setupPixmap(struct gasmix *lastgasmix)
} else if (event_is_gaschange(internalEvent)) {
struct gasmix mix = get_gasmix_from_event(&displayed_dive, internalEvent);
struct icd_data icd_data;
bool icd = isobaric_counterdiffusion(lastgasmix, &mix, &icd_data);
bool icd = isobaric_counterdiffusion(lastgasmix, mix, &icd_data);
if (mix.he.permille) {
if (icd)
setPixmap(EVENT_PIXMAP_BIGGER(":gaschange-trimix-ICD-icon"));
else
setPixmap(EVENT_PIXMAP_BIGGER(":gaschange-trimix-icon"));
} else if (gasmix_is_air(&mix)) {
} else if (gasmix_is_air(mix)) {
if (icd)
setPixmap(EVENT_PIXMAP_BIGGER(":gaschange-air-ICD-icon"));
else
@ -165,7 +165,7 @@ void DiveEventItem::setupPixmap(struct gasmix *lastgasmix)
#undef EVENT_PIXMAP_BIGGER
}
void DiveEventItem::setupToolTipString(struct gasmix *lastgasmix)
void DiveEventItem::setupToolTipString(struct gasmix lastgasmix)
{
// we display the event on screen - so translate
QString name = gettextFromC::tr(internalEvent->name);
@ -177,12 +177,12 @@ void DiveEventItem::setupToolTipString(struct gasmix *lastgasmix)
struct gasmix mix = get_gasmix_from_event(&displayed_dive, internalEvent);
struct membuffer mb = {};
name += ": ";
name += gasname(&mix);
name += gasname(mix);
/* Do we have an explicit cylinder index? Show it. */
if (internalEvent->gas.index >= 0)
name += tr(" (cyl. %1)").arg(internalEvent->gas.index + 1);
bool icd = isobaric_counterdiffusion(lastgasmix, &mix, &icd_data);
bool icd = isobaric_counterdiffusion(lastgasmix, mix, &icd_data);
if (icd_data.dHe < 0) {
put_format(&mb, "\n%s %s:%+.3g%% %s:%+.3g%%%s%+.3g%%",
qPrintable(tr("ICD")),
@ -192,7 +192,7 @@ void DiveEventItem::setupToolTipString(struct gasmix *lastgasmix)
name += QString::fromUtf8(mb.buffer, mb.len);
free_buffer(&mb);
}
*lastgasmix = mix;
lastgasmix = mix;
} else if (same_string(internalEvent->name, "modechange")) {
name += QString(": %1").arg(gettextFromC::tr(divemode_text_ui[internalEvent->value]));
} else if (value) {