subsurface/core/metrics.cpp
Dirk Hohndel 323e97c603 mobile/UI: remember the system default font size
We need to do this before the preferences are loaded, or the system
default size is lost. Given that our other sizes are all relative to
this value, that would be a problem.

With this we can now ensure that we always have the right font size for
smaller, regular, and larger theme settings.

Also removes some obsolete commented out code.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-19 12:35:29 -08:00

65 lines
1.1 KiB
C++

// SPDX-License-Identifier: GPL-2.0
/*
* metrics.cpp
*
* methods to find/compute essential UI metrics
* (font properties, icon sizes, etc)
*
*/
#include "metrics.h"
static IconMetrics dfltIconMetrics;
IconMetrics::IconMetrics() :
sz_small(-1),
sz_med(-1),
sz_big(-1),
sz_pic(-1),
spacing(-1),
dpr(1.0)
{
}
QFont defaultModelFont()
{
QFont font;
return font;
}
QFontMetrics defaultModelFontMetrics()
{
return QFontMetrics(defaultModelFont());
}
// return the default icon size, computed as the multiple of 16 closest to
// the given height
static int defaultIconSize(int height)
{
int ret = (height + 8)/16;
ret *= 16;
if (ret < 16)
ret = 16;
return ret;
}
const IconMetrics & defaultIconMetrics()
{
if (dfltIconMetrics.sz_small == -1) {
int small = defaultIconSize(defaultModelFontMetrics().height());
dfltIconMetrics.sz_small = small;
dfltIconMetrics.sz_med = small + small/2;
dfltIconMetrics.sz_big = 2*small;
dfltIconMetrics.sz_pic = 8*small;
dfltIconMetrics.spacing = small/8;
}
return dfltIconMetrics;
}
void updateDevicePixelRatio(double dpr)
{
dfltIconMetrics.dpr = dpr;
}