Copyright (c) 2018 Julian Wolff <wolff@julianwolff.de>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "kxftconfig.h"
#include "previewrenderengine.h"
#include "Fc.h"
#include <QApplication>
#include <QX11Info>
#include <QScreen>
#include <X11/Xft/Xft.h>
#ifdef HAVE_FONTCONFIG
static int qtToFcWeight(int weight)
{
switch(weight)
{
case 0:
return FC_WEIGHT_THIN;
case QFont::Light>>1:
return FC_WEIGHT_EXTRALIGHT;
case QFont::Light:
return FC_WEIGHT_LIGHT;
default:
case QFont::Normal:
return FC_WEIGHT_REGULAR;
case (QFont::Normal+QFont::DemiBold)>>1:
#ifdef KFI_HAVE_MEDIUM_WEIGHT
return FC_WEIGHT_MEDIUM;
#endif
case QFont::DemiBold:
return FC_WEIGHT_DEMIBOLD;
case QFont::Bold:
return FC_WEIGHT_BOLD;
case (QFont::Bold+QFont::Black)>>1:
return FC_WEIGHT_EXTRABOLD;
case QFont::Black:
return FC_WEIGHT_BLACK;
}
}
#ifndef KFI_FC_NO_WIDTHS
static int qtToFcWidth(int weight)
{
switch(weight)
{
case QFont::UltraCondensed:
return KFI_FC_WIDTH_ULTRACONDENSED;
case QFont::ExtraCondensed:
return KFI_FC_WIDTH_EXTRACONDENSED;
case QFont::Condensed:
return KFI_FC_WIDTH_CONDENSED;
case QFont::SemiCondensed:
return KFI_FC_WIDTH_SEMICONDENSED;
default:
case QFont::Unstretched:
return KFI_FC_WIDTH_NORMAL;
case QFont::SemiExpanded:
return KFI_FC_WIDTH_SEMIEXPANDED;
case QFont::Expanded:
return KFI_FC_WIDTH_EXPANDED;
case QFont::ExtraExpanded:
return KFI_FC_WIDTH_EXTRAEXPANDED;
case QFont::UltraExpanded:
return KFI_FC_WIDTH_ULTRAEXPANDED;
}
}
#endif
static bool qtToFcSlant(int slant)
{
switch(slant)
{
default:
case QFont::StyleNormal:
return FC_SLANT_ROMAN;
case QFont::StyleItalic:
return FC_SLANT_ITALIC;
case QFont::StyleOblique:
return FC_SLANT_OBLIQUE;
}
}
static quint32 qtToFcStyle(const QFont &font)
{
return KFI::FC::createStyleVal(
qtToFcWeight(font.weight()),
qtToFcWidth(font.stretch()),
qtToFcSlant(font.style())
);
}
PreviewRenderEngine::PreviewRenderEngine(bool init)
: CFcEngine(init)
{
if(init)
FcInitReinitialize();
}
PreviewRenderEngine::~PreviewRenderEngine()
{
}
QImage PreviewRenderEngine::drawAutoSize(const QFont &font, const QColor &txt, const QColor &bgnd, const QString &text)
{
const QString& name = font.family();
const quint32 style = qtToFcStyle(font);
int faceNo = 0;
double ratio = QGuiApplication::primaryScreen()->devicePixelRatio();
double dpi = QX11Info::appDpiY();
int fSize((int)(((font.pointSizeF()*dpi*ratio)/72.0)+0.5));
QImage image(draw(name, style, faceNo, txt, bgnd, fSize, text));
image.setDevicePixelRatio(ratio);
return image;
}
#endif
