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Add OSXMakeDPIFromScaleFactor() helper

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No real changes, just avoid repeating wxRound(scaleFactor*72) in several
places and do it in this single function instead.
This commit is contained in:
Vadim Zeitlin 2020-07-21 17:13:41 +02:00
parent a2c55fa834
commit a8bb796f8c
3 changed files with 14 additions and 3 deletions
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3
include/wx/osx/window.h
View File

@ -294,6 +294,9 @@ public:
// internal response to size events
virtual void MacOnInternalSize() {}
// Return the DPI corresponding to the given scale factor.
static wxSize OSXMakeDPIFromScaleFactor(double scaleFactor);
protected:
// For controls like radio buttons which are genuinely composite
wxList m_subControls;

4
src/osx/cocoa/nonownedwnd.mm
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@ -629,8 +629,8 @@ extern int wxOSXGetIdFromSelector(SEL action );
doubleValue];
if (newBackingScaleFactor != oldBackingScaleFactor)
{
wxSize oldDPI((int)(oldBackingScaleFactor*72.0),(int)(oldBackingScaleFactor*72.0));
wxSize newDPI((int)(newBackingScaleFactor*72.0),(int)(newBackingScaleFactor*72.0));
const wxSize oldDPI = wxWindow::OSXMakeDPIFromScaleFactor(oldBackingScaleFactor);
const wxSize newDPI = wxWindow::OSXMakeDPIFromScaleFactor(newBackingScaleFactor);
wxDPIChangedEvent event(oldDPI, newDPI);
event.SetEventObject(wxpeer);

10
src/osx/window_osx.cpp
View File

@ -2620,6 +2620,14 @@ bool wxWindowMac::OSXHandleKeyEvent( wxKeyEvent& event )
return handled ;
}
/* static */
wxSize wxWindowMac::OSXMakeDPIFromScaleFactor(double scaleFactor)
{
const int dpi = wxRound(scaleFactor*72.0);
return wxSize(dpi, dpi);
}
wxSize wxWindowMac::GetDPI() const
{
double scaleFactor;
@ -2628,7 +2636,7 @@ wxSize wxWindowMac::GetDPI() const
else
scaleFactor = wxOSXGetMainScreenContentScaleFactor();
return wxSize(wxRound(scaleFactor*72.0),wxRound(scaleFactor*72.0));
return OSXMakeDPIFromScaleFactor(scaleFactor);
}
//