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IconUtils: add cache to avoid redundant I/O

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This commit is contained in:
Le Tan 2018-05-18 20:58:10 +08:00
parent 52546e4664
commit 18ee02d920
2 changed files with 20 additions and 3 deletions
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13
src/utils/viconutils.cpp
View File

@ -1,6 +1,5 @@
#include "viconutils.h"
#include <QDebug>
#include <QRegExp>
#include <QByteArray>
#include <QPixmap>
@ -8,13 +7,20 @@
#include "vutils.h"
QHash<QString, QIcon> VIconUtils::m_cache;
VIconUtils::VIconUtils()
{
}
QIcon VIconUtils::icon(const QString &p_file, const QString &p_fg, bool p_addDisabled)
{
const QString key = cacheKey(p_file, p_fg, p_addDisabled);
auto it = m_cache.find(key);
if (it != m_cache.end()) {
return it.value();
}
QFileInfo fi(p_file);
bool isSvg = fi.suffix().toLower() == "svg";
if (p_fg.isEmpty() || !isSvg) {
@ -48,5 +54,8 @@ QIcon VIconUtils::icon(const QString &p_file, const QString &p_fg, bool p_addDis
icon.addPixmap(disabledPixmap, QIcon::Disabled);
}
// Add to cache.
m_cache.insert(key, icon);
return icon;
}

10
src/utils/viconutils.h
View File

@ -3,12 +3,12 @@
#include <QString>
#include <QIcon>
#include <QHash>
#include "vpalette.h"
extern VPalette *g_palette;
class VIconUtils
{
public:
@ -94,6 +94,14 @@ public:
private:
VIconUtils();
static QString cacheKey(const QString &p_file, const QString &p_fg, bool p_addDisabled)
{
return p_file + "_" + p_fg + "_" + (p_addDisabled ? "1" : "0");
}
// file_fg_addDisabled as key.
static QHash<QString, QIcon> m_cache;
};
#endif // VICONUTILS_H