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Add other font size scaling

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Minor fixes:
- Fixes some incorrect cast
- fixes some incorrect comments
This commit is contained in:
Pandagrapher
2022-08-19 19:05:06 +02:00
parent 89d2bdce5b
commit 7ee6fd795b
8 changed files with 97 additions and 51 deletions
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15
rtgui/filebrowserentry.cc
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@@ -789,7 +789,20 @@ void FileBrowserEntry::drawStraightenGuide (Cairo::RefPtr<Cairo::Context> cr)
Glib::RefPtr<Pango::Context> context = parent->getDrawingArea()->get_pango_context () ;
Pango::FontDescription fontd = context->get_font_description ();
fontd.set_weight (Pango::WEIGHT_BOLD);
fontd.set_size (8 * Pango::SCALE);
const int fontSize = 8; // pt
// Converting font size to "px" based on DPI and scale
#ifndef __APPLE__
const double fontScale = RTScalable::getDPI() / RTScalable::pangoDPI
* static_cast<double>(RTScalable::getScale()); // Refer to notes in rtscalable.h
#else
// On MacOS, font is already scaled by the System library
// Refer to https://gitlab.gnome.org/GNOME/gtk/-/blob/gtk-3-24/gdk/quartz/gdkscreen-quartz.c
const double fontScale = 1.;
#endif
const double absoluteFontSize = static_cast<double>(fontSize) * fontScale; // px
// Absolute size is defined in "Pango units" and shall be multiplied by
// Pango::SCALE from "px":
fontd.set_absolute_size (absoluteFontSize * static_cast<double>(Pango::SCALE));
context->set_font_description (fontd);
Glib::RefPtr<Pango::Layout> deglayout = parent->getDrawingArea()->create_pango_layout(Glib::ustring::compose ("%1 deg", Glib::ustring::format(std::setprecision(2), rot_deg)));