mirror of
https://github.com/ZDoom/zdoom-macos-deps.git
synced 2024-11-26 05:41:14 +00:00
101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
// Name: wx/private/window.h
|
||
|
|
// Purpose: misc wxWindow helpers
|
||
|
|
// Author: Vaclav Slavik
|
||
|
|
// Created: 2010-01-21
|
||
|
|
// Copyright: (c) 2010 Vaclav Slavik
|
||
|
|
// Licence: wxWindows licence
|
||
|
|
/////////////////////////////////////////////////////////////////////////////
|
||
|
|
|
||
|
|
#ifndef _WX_PRIVATE_WINDOW_H_
|
||
|
|
#define _WX_PRIVATE_WINDOW_H_
|
||
|
|
|
||
|
|
#include "wx/gdicmn.h"
|
||
|
|
#include "wx/dynlib.h"
|
||
|
|
|
||
|
|
namespace wxPrivate
|
||
|
|
{
|
||
|
|
|
||
|
|
// Windows' computes dialog units using average character width over upper-
|
||
|
|
// and lower-case ASCII alphabet and not using the average character width
|
||
|
|
// metadata stored in the font; see
|
||
|
|
// http://support.microsoft.com/default.aspx/kb/145994 for detailed discussion.
|
||
|
|
//
|
||
|
|
// This helper function computes font dimensions in the same way. It works with
|
||
|
|
// either wxDC or wxWindow argument.
|
||
|
|
template<typename T>
|
||
|
|
inline wxSize GetAverageASCIILetterSize(const T& of_what)
|
||
|
|
{
|
||
|
|
const wxStringCharType *TEXT_TO_MEASURE =
|
||
|
|
wxS("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
|
||
|
|
|
||
|
|
wxSize s = of_what.GetTextExtent(TEXT_TO_MEASURE);
|
||
|
|
s.x = (s.x / 26 + 1) / 2;
|
||
|
|
return s;
|
||
|
|
}
|
||
|
|
|
||
|
|
namespace
|
||
|
|
{
|
||
|
|
|
||
|
|
inline bool SupportsPerMonitorDPI()
|
||
|
|
{
|
||
|
|
static bool s_checkDPI =
|
||
|
|
#if defined(__WXMSW__) && wxUSE_DYNLIB_CLASS
|
||
|
|
// Only check the DPI when GetDpiForWindow is available because the old
|
||
|
|
// method (GetDeviceCaps) is a lot slower (about 1500 times).
|
||
|
|
// And when GetDpiForWindow is not available (for example older Windows
|
||
|
|
// versions), per-monitor DPI (V2) is also not available.
|
||
|
|
wxLoadedDLL("user32.dll").HasSymbol("GetDpiForWindow");
|
||
|
|
#else
|
||
|
|
false;
|
||
|
|
#endif
|
||
|
|
return s_checkDPI;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
class DpiDependentValue
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
// Explicit initialization is needed if T is a primitive type.
|
||
|
|
DpiDependentValue()
|
||
|
|
: m_value(), m_dpi()
|
||
|
|
{ }
|
||
|
|
|
||
|
|
bool HasChanged(const wxWindowBase* win)
|
||
|
|
{
|
||
|
|
if ( win && SupportsPerMonitorDPI() )
|
||
|
|
{
|
||
|
|
const wxSize dpi = win->GetDPI();
|
||
|
|
if ( dpi != m_dpi )
|
||
|
|
{
|
||
|
|
m_dpi = dpi;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Ensure that we return true the first time we're called,
|
||
|
|
// assuming that the value will always be set to a non-default value.
|
||
|
|
return m_value == T();
|
||
|
|
}
|
||
|
|
|
||
|
|
void SetAtNewDPI(const T& value)
|
||
|
|
{
|
||
|
|
m_value = value;
|
||
|
|
}
|
||
|
|
|
||
|
|
T& Get()
|
||
|
|
{
|
||
|
|
return m_value;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
T m_value;
|
||
|
|
wxSize m_dpi;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace wxPrivate
|
||
|
|
|
||
|
|
#endif // _WX_PRIVATE_WINDOW_H_
|