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86 lines
3.3 KiB
C++
86 lines
3.3 KiB
C++
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// SPDX-License-Identifier: GPL-2.0
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#include "divepixmapcache.h"
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#include "core/metrics.h"
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#include <cmath>
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DivePixmaps::~DivePixmaps()
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{
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}
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static QPixmap createPixmap(const char *name, int size)
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{
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return QPixmap(QString(name)).scaled(size, size, Qt::KeepAspectRatio, Qt::SmoothTransformation);
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}
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DivePixmaps::DivePixmaps(int dpr) : dpr(dpr)
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{
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extern int verbose;
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double dprf = dpr / 100.0;
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const IconMetrics &metrics = defaultIconMetrics();
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#ifndef SUBSURFACE_MOBILE
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int sz_bigger = metrics.sz_med + metrics.sz_small; // ex 40px
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#else
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#if defined(Q_OS_IOS)
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// on iOS devices we need to adjust for Device Pixel Ratio
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int sz_bigger = metrics.sz_med * metrics.dpr;
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#else
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// SUBSURFACE_MOBILE, seems a little big from the code,
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// but looks fine on device
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int sz_bigger = metrics.sz_big + metrics.sz_med;
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#endif
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#endif
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sz_bigger = lrint(sz_bigger * dprf);
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int sz_pix = sz_bigger / 2; // ex 20px
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if (verbose)
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qDebug("%s DPR: %f metrics: %d %d sz_bigger: %d", __FUNCTION__, dprf, metrics.sz_med, metrics.sz_small, sz_bigger);
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warning = createPixmap(":status-warning-icon", sz_pix);
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info = createPixmap(":status-info-icon", sz_pix);
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violation = createPixmap(":status-violation-icon", sz_pix);
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bailout = createPixmap(":bailout-icon", sz_pix);
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onCCRLoop = createPixmap(":onCCRLoop-icon", sz_pix);
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bookmark = createPixmap(":dive-bookmark-icon", sz_pix);
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gaschangeTrimixICD = createPixmap(":gaschange-trimix-ICD-icon", sz_bigger);
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gaschangeTrimix = createPixmap(":gaschange-trimix-icon", sz_bigger);
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gaschangeAirICD = createPixmap(":gaschange-air-ICD-icon", sz_bigger);
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gaschangeAir = createPixmap(":gaschange-air-icon", sz_bigger);
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gaschangeOxygenICD = createPixmap(":gaschange-oxygen-ICD-icon", sz_bigger);
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gaschangeOxygen = createPixmap(":gaschange-oxygen-icon", sz_bigger);
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gaschangeEANICD = createPixmap(":gaschange-ean-ICD-icon", sz_bigger);
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gaschangeEAN = createPixmap(":gaschange-ean-icon", sz_bigger);
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// The transparen pixmap is a very obscure feature to enable tooltips without showing a pixmap.
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// See code in diveeventitem.cpp. This should probably be replaced by a different mechanism.
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QPixmap transparentPixmap(lrint(4 * dprf), lrint(20 * dprf));
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transparentPixmap.fill(QColor::fromRgbF(1.0, 1.0, 1.0, 0.01));
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}
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static std::vector<std::shared_ptr<const DivePixmaps>> cache;
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// Return a std::shared_ptr<> for reference counting.
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// Note that the idiomatic way would be to store std::weak_ptr<>s.
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// That would mean that the pixmaps are destroyed when the last user uses
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// them. We want to keep them around at least until the next caller!
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// Therefore we also std::shared_ptr<>s.
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std::shared_ptr<const DivePixmaps> getDivePixmaps(double dprIn)
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{
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using ptr = std::shared_ptr<const DivePixmaps>;
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ptr res;
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int dpr = lrint(dprIn * 100.0); // Caching on a percent basis should be fine.
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auto it = std::find_if(cache.begin(), cache.end(), [dpr](const ptr &p) { return p->dpr == dpr; });
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if (it == cache.end()) {
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res = std::make_shared<DivePixmaps>(dpr);
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cache.push_back(res);
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} else {
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res = *it;
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}
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// Remove unused items with C++'s wonderful erase/remove idiom.
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// If the use_count is one, then the cache has the only reference, so remove the object.
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cache.erase(std::remove_if(cache.begin(), cache.end(),
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[](const ptr &p) { return p.use_count() <= 1; }), cache.end());
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return res;
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}
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