KiCad PCB EDA Suite
hidpi_gl_canvas.cpp
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1 /*
2  * This program source code file is part of KICAD, a free EDA CAD application.
3  *
4  * Copyright (C) 2017 Bernhard Stegmaier <stegmaier@sw-systems.de>
5  * Copyright (C) 2016-2017 Kicad Developers, see change_log.txt for contributors.
6  *
7  * Base class for HiDPI aware wxGLCanvas implementations.
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
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26 
27 #include <gal/hidpi_gl_canvas.h>
28 
29 #include <gal/dpi_scaling.h>
30 
31 
32 HIDPI_GL_CANVAS::HIDPI_GL_CANVAS( wxWindow* parent, wxWindowID id, const int* attribList,
33  const wxPoint& pos, const wxSize& size, long style,
34  const wxString& name, const wxPalette& palette ) :
35  wxGLCanvas( parent, id, attribList, pos, size, style, name, palette ),
36  m_scale_factor( DPI_SCALING::GetDefaultScaleFactor() )
37 {
38 }
39 
40 
42 {
43  wxSize size = wxGLCanvas::GetClientSize();
44 
45  const double scaleFactor = GetScaleFactor();
46  size.x *= scaleFactor;
47  size.y *= scaleFactor;
48 
49  return size;
50 }
51 
52 
53 wxPoint HIDPI_GL_CANVAS::GetNativePosition( const wxPoint& aPoint ) const
54 {
55  wxPoint nativePoint = aPoint;
56 
57  const double scaleFactor = GetScaleFactor();
58  nativePoint.x *= scaleFactor;
59  nativePoint.y *= scaleFactor;
60 
61  return nativePoint;
62 }
63 
64 
65 void HIDPI_GL_CANVAS::SetScaleFactor( double aNewScaleFactor )
66 {
67  m_scale_factor = aNewScaleFactor;
68 }
69 
70 
72 {
73  return m_scale_factor;
74 }
virtual wxSize GetNativePixelSize() const
double GetScaleFactor() const
Get the current scale factor.
HIDPI_GL_CANVAS(wxWindow *parent, wxWindowID id=wxID_ANY, const int *attribList=nullptr, const wxPoint &pos=wxDefaultPosition, const wxSize &size=wxDefaultSize, long style=0, const wxString &name=wxGLCanvasName, const wxPalette &palette=wxNullPalette)
Class to handle configuration and automatic determination of the DPI scale to use for canvases.
Definition: dpi_scaling.h:36
double m_scale_factor
The current scale factor (e.g.
wxPoint GetNativePosition(const wxPoint &aPoint) const
Convert the given point from client coordinates to native pixel coordinates.
const char * name
Definition: DXF_plotter.cpp:56
void SetScaleFactor(double aFactor)
Set the canvas scale factor, probably for a hi-DPI display.