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Implement the get_screen_dpi function

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This is sadly known to be incorrect on most systems. But it's as incorrect
as it was on Gtk so should work equally well to get roughly the right
sizes for printing - once we implement printing, that is :-)

Also removed a qDebug that snuck in in commit 6fc4d72079dd ("Enable
defautl_filename in settings").

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2013-05-10 09:24:06 -07:00
parent bfef1d0219
commit 3e22e388e9
2 changed files with 8 additions and 5 deletions
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6
display.h
View file

@ -6,15 +6,13 @@ extern "C" {
#endif
#define SCALE_SCREEN 1.0
#warning "PORT THE get_screen_dpi to Qt"
#define SCALE_PRINT 1.0
//#define SCALE_PRINT (1.0 / get_screen_dpi())
#define SCALE_PRINT (1.0 / get_screen_dpi())
extern void repaint_dive(void);
extern void do_print(void);
// Commented out because I don't know how to get the dpi on a paint device yet.
// extern gdouble get_screen_dpi(void);
extern double get_screen_dpi(void);
/* Plot info with smoothing, velocity indication
* and one-, two- and three-minute minimums and maximums */

7
qt-gui.cpp
View file

@ -28,6 +28,7 @@
#include <QTextCodec>
#include <QTranslator>
#include <QSettings>
#include <QDesktopWidget>
class Translator: public QTranslator
{
@ -83,7 +84,6 @@ void init_ui(int *argcp, char ***argvp)
if (v.isValid()) {
QString name = v.toString();
prefs.default_filename = strdup(name.toUtf8());
qDebug("default filename %s", prefs.default_filename);
}
settings.endGroup();
@ -200,4 +200,9 @@ QString get_pressure_string(pressure_t pressure, bool showunit)
}
}
double get_screen_dpi()
{
QDesktopWidget *mydesk = application->desktop();
return mydesk->physicalDpiX();
}
#include "qt-gui.moc"