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The icons shown in the dive list were rendered for every single access. Render them only once. This supposes that the defaultIconMetrics structure does not change once the icons are rendered! Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
37 lines
819 B
C
37 lines
819 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* metrics.h
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*
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* header file for common function to find/compute essential UI metrics
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* (font properties, icon sizes, etc)
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*
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*/
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#ifndef METRICS_H
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#define METRICS_H
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#include <QFont>
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#include <QFontMetrics>
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#include <QSize>
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QFont defaultModelFont();
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QFontMetrics defaultModelFontMetrics();
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// Collection of icon/picture sizes and other metrics, resolution independent
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struct IconMetrics {
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// icon sizes
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int sz_small; // ex 16px
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int sz_med; // ex 24px
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int sz_big; // ex 32px
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// picture size
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int sz_pic; // ex 128px
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// icon spacing
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int spacing; // ex 2px
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// devicePixelRatio
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double dpr; // 1.0 for traditional screens, HiDPI screens up to 3.0
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IconMetrics();
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};
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const IconMetrics &defaultIconMetrics();
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void updateDevicePixelRatio(double dpr);
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#endif // METRICS_H
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