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Add DPI detection method

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Use Xft.dpi if available
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Eizen 2017-02-18 22:00:27 -03:00 committed by Nikos Tsipinakis
parent a6046586a3
commit cc3a08c1db
1 changed files with 25 additions and 0 deletions
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25
src/x.c
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@ -6,6 +6,7 @@
#include <X11/Xatom.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xresource.h>
#ifdef XINERAMA
#include <X11/extensions/Xinerama.h>
#include <assert.h>
@ -136,6 +137,28 @@ static color_t x_get_separator_color(colored_layout *cl, colored_layout *cl_next
}
}
static void set_dpi_value()
{
double dpi = 0.0;
XrmInitialize();
char * xRMS = XResourceManagerString(xctx.dpy);
if ( xRMS != NULL ) {
XrmDatabase xDB = XrmGetStringDatabase(xRMS);
char * xrmType;
XrmValue xrmValue;
if ( XrmGetResource(xDB, "Xft.dpi", NULL, &xrmType, &xrmValue))
dpi = strtod(xrmValue.addr, NULL);
}
if (dpi > 0.0) {
PangoFontMap *font_map = pango_cairo_font_map_get_default();
pango_cairo_font_map_set_resolution((PangoCairoFontMap *) font_map, dpi);
}
}
static void x_cairo_setup(void)
{
cairo_ctx.surface = cairo_xlib_surface_create(xctx.dpy,
@ -143,6 +166,8 @@ static void x_cairo_setup(void)
cairo_ctx.context = cairo_create(cairo_ctx.surface);
set_dpi_value();
cairo_ctx.desc = pango_font_description_from_string(settings.font);
}