/////////////////////////////////////////////////////////////////////////////
-// Name: common/dcbase.cpp
+// Name: src/common/dcbase.cpp
// Purpose: generic methods of the wxDC Class
// Author: Vadim Zeitlin
// Modified by:
// Created: 05/25/99
// RCS-ID: $Id$
-// Copyright: (c) wxWindows team
+// Copyright: (c) wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// declarations
// ============================================================================
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma implementation "dcbase.h"
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+ #pragma hdrstop
+#endif
+
+#include "wx/dc.h"
+#include "wx/dcclient.h"
+#include "wx/dcmemory.h"
+#include "wx/dcscreen.h"
+#include "wx/dcbuffer.h" // for IMPLEMENT_DYNAMIC_CLASS
+
+#ifndef WX_PRECOMP
+ #include "wx/math.h"
+#endif
+
+
+
+#if wxUSE_NEW_DC
+
+//----------------------------------------------------------------------------
+// wxDCFactory
+//----------------------------------------------------------------------------
+
+wxDCFactory *wxDCFactory::m_factory = NULL;
+
+void wxDCFactory::SetDCFactory( wxDCFactory *factory )
+{
+ if (wxDCFactory::m_factory)
+ delete wxDCFactory::m_factory;
+
+ wxDCFactory::m_factory = factory;
+}
+
+wxDCFactory *wxDCFactory::GetFactory()
+{
+ if (!wxDCFactory::m_factory)
+ wxDCFactory::m_factory = new wxNativeDCFactory;
+
+ return wxDCFactory::m_factory;
+}
+
+//-----------------------------------------------------------------------------
+// wxNativeDCFactory
+//-----------------------------------------------------------------------------
+
+wxImplDC* wxNativeDCFactory::CreateWindowDC( wxWindowDC *owner )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsWindowImplDC( owner );
+#elif defined(__WXGTK20__)
+ return new wxGTKWindowImplDC( owner );
+#elif defined(__WXGTK__)
+ return new wxGTKWindowImplDC( owner );
+#elif defined(__WXMAC__)
+ return new wxMacWindowImplDC( owner );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaWindowImplDC( owner );
+#elif defined(__WXMOTIF__)
+ return new wxMotifWindowImplDC( owner );
+#elif defined(__WXX11__)
+ return new wxX11WindowImplDC( owner );
+#elif defined(__WXMGL__)
+ return new wxMGLWindowImplDC( owner );
+#elif defined(__WXDFB__)
+ return new wxDFBWindowImplDC( owner );
+#elif defined(__WXPM__)
+ return new wxPMWindowImplDC( owner );
+#elif defined(__PALMOS__)
+ return new wxPalmWindowImplDC( owner );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateWindowDC( wxWindowDC *owner, wxWindow *window )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsWindowImplDC( owner, window );
+#elif defined(__WXGTK20__)
+ return new wxGTKWindowImplDC( owner, window );
+#elif defined(__WXGTK__)
+ return new wxGTKWindowImplDC( owner, window );
+#elif defined(__WXMAC__)
+ return new wxMacWindowImplDC( owner, window );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaWindowImplDC( owner, window );
+#elif defined(__WXMOTIF__)
+ return new wxMotifWindowImplDC( owner, window );
+#elif defined(__WXX11__)
+ return new wxX11WindowImplDC( owner, window );
+#elif defined(__WXMGL__)
+ return new wxMGLWindowImplDC( owner, window );
+#elif defined(__WXDFB__)
+ return new wxDFBWindowImplDC( owner, window );
+#elif defined(__WXPM__)
+ return new wxPMWindowImplDC( owner, window );
+#elif defined(__PALMOS__)
+ return new wxPalmWindowImplDC( owner, window );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateClientDC( wxClientDC *owner )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsClientImplDC( owner );
+#elif defined(__WXGTK20__)
+ return new wxGTKClientImplDC( owner );
+#elif defined(__WXGTK__)
+ return new wxGTKClientImplDC( owner );
+#elif defined(__WXMAC__)
+ return new wxMacClientImplDC( owner );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaClientImplDC( owner );
+#elif defined(__WXMOTIF__)
+ return new wxMotifClientImplDC( owner );
+#elif defined(__WXX11__)
+ return new wxX11ClientImplDC( owner );
+#elif defined(__WXMGL__)
+ return new wxMGLClientImplDC( owner );
+#elif defined(__WXDFB__)
+ return new wxDFBClientImplDC( owner );
+#elif defined(__WXPM__)
+ return new wxPMClientImplDC( owner );
+#elif defined(__PALMOS__)
+ return new wxPalmClientImplDC( owner );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateClientDC( wxClientDC *owner, wxWindow *window )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsClientImplDC( owner, window );
+#elif defined(__WXGTK20__)
+ return new wxGTKClientImplDC( owner, window );
+#elif defined(__WXGTK__)
+ return new wxGTKClientImplDC( owner, window );
+#elif defined(__WXMAC__)
+ return new wxMacClientImplDC( owner, window );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaClientImplDC( owner, window );
+#elif defined(__WXMOTIF__)
+ return new wxMotifClientImplDC( owner, window );
+#elif defined(__WXX11__)
+ return new wxX11ClientImplDC( owner, window );
+#elif defined(__WXMGL__)
+ return new wxMGLClientImplDC( owner, window );
+#elif defined(__WXDFB__)
+ return new wxDFBClientImplDC( owner, window );
+#elif defined(__WXPM__)
+ return new wxPMClientImplDC( owner, window );
+#elif defined(__PALMOS__)
+ return new wxPalmClientImplDC( owner, window );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreatePaintDC( wxPaintDC *owner )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsPaintImplDC( owner );
+#elif defined(__WXGTK20__)
+ return new wxGTKPaintImplDC( owner );
+#elif defined(__WXGTK__)
+ return new wxGTKPaintImplDC( owner );
+#elif defined(__WXMAC__)
+ return new wxMacPaintImplDC( owner );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaPaintImplDC( owner );
+#elif defined(__WXMOTIF__)
+ return new wxMotifPaintImplDC( owner );
+#elif defined(__WXX11__)
+ return new wxX11PaintImplDC( owner );
+#elif defined(__WXMGL__)
+ return new wxMGLPaintImplDC( owner );
+#elif defined(__WXDFB__)
+ return new wxDFBPaintImplDC( owner );
+#elif defined(__WXPM__)
+ return new wxPMPaintImplDC( owner );
+#elif defined(__PALMOS__)
+ return new wxPalmPaintImplDC( owner );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreatePaintDC( wxPaintDC *owner, wxWindow *window )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsPaintImplDC( owner, window );
+#elif defined(__WXGTK20__)
+ return new wxGTKPaintImplDC( owner, window );
+#elif defined(__WXGTK__)
+ return new wxGTKPaintImplDC( owner, window );
+#elif defined(__WXMAC__)
+ return new wxMacPaintImplDC( owner, window );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaPaintImplDC( owner, window );
+#elif defined(__WXMOTIF__)
+ return new wxMotifPaintImplDC( owner, window );
+#elif defined(__WXX11__)
+ return new wxX11PaintImplDC( owner, window );
+#elif defined(__WXMGL__)
+ return new wxMGLPaintImplDC( owner, window );
+#elif defined(__WXDFB__)
+ return new wxDFBPaintImplDC( owner, window );
+#elif defined(__WXPM__)
+ return new wxPMPaintImplDC( owner, window );
+#elif defined(__PALMOS__)
+ return new wxPalmPaintImplDC( owner, window );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsMemoryImplDC( owner );
+#elif defined(__WXGTK20__)
+ return new wxGTKMemoryImplDC( owner );
+#elif defined(__WXGTK__)
+ return new wxGTKMemoryImplDC( owner );
+#elif defined(__WXMAC__)
+ return new wxMacMemoryImplDC( owner );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaMemoryImplDC( owner );
+#elif defined(__WXMOTIF__)
+ return new wxMotifMemoryImplDC( owner );
+#elif defined(__WXX11__)
+ return new wxX11MemoryImplDC( owner );
+#elif defined(__WXMGL__)
+ return new wxMGLMemoryImplDC( owner );
+#elif defined(__WXDFB__)
+ return new wxDFBMemoryImplDC( owner );
+#elif defined(__WXPM__)
+ return new wxPMMemoryImplDC( owner );
+#elif defined(__PALMOS__)
+ return new wxPalmMemoryImplDC( owner );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsMemoryImplDC( owner, bitmap );
+#elif defined(__WXGTK20__)
+ return new wxGTKMemoryImplDC( owner, bitmap );
+#elif defined(__WXGTK__)
+ return new wxGTKMemoryImplDC( owner, bitmap );
+#elif defined(__WXMAC__)
+ return new wxMacMemoryImplDC( owner, bitmap );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaMemoryImplDC( owner, bitmap );
+#elif defined(__WXMOTIF__)
+ return new wxMotifMemoryImplDC( owner, bitmap );
+#elif defined(__WXX11__)
+ return new wxX11MemoryImplDC( owner, bitmap );
+#elif defined(__WXMGL__)
+ return new wxMGLMemoryImplDC( owner, bitmap );
+#elif defined(__WXDFB__)
+ return new wxDFBMemoryImplDC( owner, bitmap );
+#elif defined(__WXPM__)
+ return new wxPMMemoryImplDC( owner, bitmap );
+#elif defined(__PALMOS__)
+ return new wxPalmMemoryImplDC( owner, bitmap );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateMemoryDC( wxMemoryDC *owner, wxDC *dc )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsMemoryImplDC( owner, dc );
+#elif defined(__WXGTK20__)
+ return new wxGTKMemoryImplDC( owner, dc );
+#elif defined(__WXGTK__)
+ return new wxGTKMemoryImplDC( owner, dc );
+#elif defined(__WXMAC__)
+ return new wxMacMemoryImplDC( owner, dc );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaMemoryImplDC( owner, dc );
+#elif defined(__WXMOTIF__)
+ return new wxMotifMemoryImplDC( owner, dc );
+#elif defined(__WXX11__)
+ return new wxX11MemoryImplDC( owner, dc );
+#elif defined(__WXMGL__)
+ return new wxMGLMemoryImplDC( owner, dc );
+#elif defined(__WXDFB__)
+ return new wxDFBMemoryImplDC( owner, dc );
+#elif defined(__WXPM__)
+ return new wxPMMemoryImplDC( owner, dc );
+#elif defined(__PALMOS__)
+ return new wxPalmMemoryImplDC( owner, dc );
+#endif
+}
+
+wxImplDC* wxNativeDCFactory::CreateScreenDC( wxScreenDC *owner )
+{
+#if defined(__WXMSW__)
+ return new wxWindowsScreenImplDC( owner );
+#elif defined(__WXGTK20__)
+ return new wxGTKScreenImplDC( owner );
+#elif defined(__WXGTK__)
+ return new wxGTKScreenImplDC( owner );
+#elif defined(__WXMAC__)
+ return new wxMacScreenImplDC( owner );
+#elif defined(__WXCOCOA__)
+ return new wxCocoaScreenImplDC( owner );
+#elif defined(__WXMOTIF__)
+ return new wxMotifScreenImplDC( owner );
+#elif defined(__WXX11__)
+ return new wxX11ScreenImplDC( owner );
+#elif defined(__WXMGL__)
+ return new wxMGLScreenImplDC( owner );
+#elif defined(__WXDFB__)
+ return new wxDFBScreenImplDC( owner );
+#elif defined(__WXPM__)
+ return new wxPMScreenImplDC( owner );
+#elif defined(__PALMOS__)
+ return new wxPalmScreenImplDC( owner );
+#endif
+}
+
+//-----------------------------------------------------------------------------
+// wxWindowDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
+
+wxWindowDC::wxWindowDC()
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateWindowDC( this );
+}
+
+wxWindowDC::wxWindowDC( wxWindow *win )
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateWindowDC( this, win );
+}
+
+//-----------------------------------------------------------------------------
+// wxClientDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxDC)
+
+wxClientDC::wxClientDC()
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateClientDC( this );
+}
+
+wxClientDC::wxClientDC( wxWindow *win )
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateClientDC( this, win );
+}
+
+//-----------------------------------------------------------------------------
+// wxMemoryDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC, wxDC)
+
+wxMemoryDC::wxMemoryDC()
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateMemoryDC( this );
+}
+
+wxMemoryDC::wxMemoryDC( wxBitmap& bitmap )
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateMemoryDC( this, bitmap );
+}
+
+wxMemoryDC::wxMemoryDC( wxDC *dc )
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateMemoryDC( this, dc );
+}
+
+void wxMemoryDC::SelectObject(wxBitmap& bmp)
+{
+ // make sure that the given wxBitmap is not sharing its data with other
+ // wxBitmap instances as its contents will be modified by any drawing
+ // operation done on this DC
+ if (bmp.IsOk())
+ bmp.UnShare();
+
+#ifdef __WXGTK__
+ wxGTKMemoryImplDC *mem_pimpl = wxDynamicCast( m_pimpl, wxGTKMemoryImplDC );
+#else
+ // TODO
+#endif
+ if (mem_pimpl)
+ mem_pimpl->DoSelect(bmp);
+}
+
+void wxMemoryDC::SelectObjectAsSource(const wxBitmap& bmp)
+{
+#ifdef __WXGTK__
+ wxGTKMemoryImplDC *mem_pimpl = wxDynamicCast( m_pimpl, wxGTKMemoryImplDC );
+#else
+ // TODO
+#endif
+ mem_pimpl->DoSelect(bmp);
+}
+
+const wxBitmap& wxMemoryDC::GetSelectedBitmap() const
+{
+#ifdef __WXGTK__
+ wxGTKMemoryImplDC *mem_pimpl = wxDynamicCast( m_pimpl, wxGTKMemoryImplDC );
+#else
+ // TODO
+#endif
+ if (mem_pimpl)
+ return mem_pimpl->DoGetSelectedBitmap();
+
+ return wxNullBitmap;
+}
+
+wxBitmap& wxMemoryDC::GetSelectedBitmap()
+{
+#ifdef __WXGTK__
+ wxGTKMemoryImplDC *mem_pimpl = wxDynamicCast( m_pimpl, wxGTKMemoryImplDC );
+#else
+ // TODO
#endif
+
+ if (mem_pimpl)
+ return mem_pimpl->DoGetSelectedBitmap();
+
+ return wxNullBitmap;
+}
+
+
+//-----------------------------------------------------------------------------
+// wxPaintDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxDC)
+
+wxPaintDC::wxPaintDC()
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreatePaintDC( this );
+}
+
+wxPaintDC::wxPaintDC( wxWindow *win )
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreatePaintDC( this, win );
+}
+
+//-----------------------------------------------------------------------------
+// wxScreenDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxScreenDC, wxWindowDC)
+
+wxScreenDC::wxScreenDC()
+{
+ wxDCFactory *factory = wxDCFactory::GetFactory();
+ m_pimpl = factory->CreateScreenDC( this );
+}
+
+//-----------------------------------------------------------------------------
+// wxImplDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxImplDC, wxObject)
+
+wxImplDC::wxImplDC( wxDC *owner )
+ : m_colour(wxColourDisplay())
+ , m_ok(true)
+ , m_clipping(false)
+ , m_isInteractive(0)
+ , m_isBBoxValid(false)
+ , m_logicalOriginX(0), m_logicalOriginY(0)
+ , m_deviceOriginX(0), m_deviceOriginY(0)
+ , m_deviceLocalOriginX(0), m_deviceLocalOriginY(0)
+ , m_logicalScaleX(1.0), m_logicalScaleY(1.0)
+ , m_userScaleX(1.0), m_userScaleY(1.0)
+ , m_scaleX(1.0), m_scaleY(1.0)
+ , m_signX(1), m_signY(1)
+ , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
+ , m_clipX1(0), m_clipY1(0), m_clipX2(0), m_clipY2(0)
+ , m_logicalFunction(wxCOPY)
+ , m_backgroundMode(wxTRANSPARENT)
+ , m_mappingMode(wxMM_TEXT)
+ , m_pen()
+ , m_brush()
+ , m_backgroundBrush(*wxTRANSPARENT_BRUSH)
+ , m_textForegroundColour(*wxBLACK)
+ , m_textBackgroundColour(*wxWHITE)
+ , m_font()
+#if wxUSE_PALETTE
+ , m_palette()
+ , m_hasCustomPalette(false)
+#endif // wxUSE_PALETTE
+{
+ m_owner = owner;
+
+ m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() /
+ (double)wxGetDisplaySizeMM().GetWidth();
+ m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() /
+ (double)wxGetDisplaySizeMM().GetHeight();
+
+ ResetBoundingBox();
+ ResetClipping();
+}
+
+wxImplDC::~wxImplDC()
+{
+}
+
+// ----------------------------------------------------------------------------
+// coordinate conversions and transforms
+// ----------------------------------------------------------------------------
+
+wxCoord wxImplDC::DeviceToLogicalX(wxCoord x) const
+{
+ return wxRound((double)(x - m_deviceOriginX - m_deviceLocalOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
+}
+
+wxCoord wxImplDC::DeviceToLogicalY(wxCoord y) const
+{
+ return wxRound((double)(y - m_deviceOriginY - m_deviceLocalOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
+}
+
+wxCoord wxImplDC::DeviceToLogicalXRel(wxCoord x) const
+{
+ return wxRound((double)(x) / m_scaleX);
+}
+
+wxCoord wxImplDC::DeviceToLogicalYRel(wxCoord y) const
+{
+ return wxRound((double)(y) / m_scaleY);
+}
+
+wxCoord wxImplDC::LogicalToDeviceX(wxCoord x) const
+{
+ return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX * m_signY + m_deviceLocalOriginX;
+}
+
+wxCoord wxImplDC::LogicalToDeviceY(wxCoord y) const
+{
+ return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY * m_signY + m_deviceLocalOriginY;
+}
+
+wxCoord wxImplDC::LogicalToDeviceXRel(wxCoord x) const
+{
+ return wxRound((double)(x) * m_scaleX);
+}
+
+wxCoord wxImplDC::LogicalToDeviceYRel(wxCoord y) const
+{
+ return wxRound((double)(y) * m_scaleY);
+}
+
+void wxImplDC::ComputeScaleAndOrigin()
+{
+ m_scaleX = m_logicalScaleX * m_userScaleX;
+ m_scaleY = m_logicalScaleY * m_userScaleY;
+}
+
+void wxImplDC::SetMapMode( int mode )
+{
+ switch (mode)
+ {
+ case wxMM_TWIPS:
+ SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
+ break;
+ case wxMM_POINTS:
+ SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
+ break;
+ case wxMM_METRIC:
+ SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
+ break;
+ case wxMM_LOMETRIC:
+ SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
+ break;
+ default:
+ case wxMM_TEXT:
+ SetLogicalScale( 1.0, 1.0 );
+ break;
+ }
+ m_mappingMode = mode;
+}
+
+void wxImplDC::SetUserScale( double x, double y )
+{
+ // allow negative ? -> no
+ m_userScaleX = x;
+ m_userScaleY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetLogicalScale( double x, double y )
+{
+ // allow negative ?
+ m_logicalScaleX = x;
+ m_logicalScaleY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetLogicalOrigin( wxCoord x, wxCoord y )
+{
+ m_logicalOriginX = x * m_signX;
+ m_logicalOriginY = y * m_signY;
+ ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetDeviceOrigin( wxCoord x, wxCoord y )
+{
+ m_deviceOriginX = x;
+ m_deviceOriginY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetDeviceLocalOrigin( wxCoord x, wxCoord y )
+{
+ m_deviceLocalOriginX = x;
+ m_deviceLocalOriginY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxImplDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+{
+ // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there
+ // wxWidgets 2.9: no longer override it
+ m_signX = (xLeftRight ? 1 : -1);
+ m_signY = (yBottomUp ? -1 : 1);
+ ComputeScaleAndOrigin();
+}
+
+
+// Each element of the widths array will be the width of the string up to and
+// including the corresponding character in text. This is the generic
+// implementation, the port-specific classes should do this with native APIs
+// if available and if faster. Note: pango_layout_index_to_pos is much slower
+// than calling GetTextExtent!!
+
+#define FWC_SIZE 256
+
+class FontWidthCache
+{
+public:
+ FontWidthCache() : m_scaleX(1), m_widths(NULL) { }
+ ~FontWidthCache() { delete []m_widths; }
+
+ void Reset()
+ {
+ if (!m_widths)
+ m_widths = new int[FWC_SIZE];
+
+ memset(m_widths, 0, sizeof(int)*FWC_SIZE);
+ }
+
+ wxFont m_font;
+ double m_scaleX;
+ int *m_widths;
+};
+
+static FontWidthCache s_fontWidthCache;
+
+bool wxImplDC::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
+{
+ int totalWidth = 0;
+
+ const size_t len = text.length();
+ widths.Empty();
+ widths.Add(0, len);
+
+ // reset the cache if font or horizontal scale have changed
+ if ( !s_fontWidthCache.m_widths ||
+ !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) ||
+ (s_fontWidthCache.m_font != GetFont()) )
+ {
+ s_fontWidthCache.Reset();
+ s_fontWidthCache.m_font = GetFont();
+ s_fontWidthCache.m_scaleX = m_scaleX;
+ }
+
+ // Calculate the position of each character based on the widths of
+ // the previous characters
+ int w, h;
+ for ( size_t i = 0; i < len; i++ )
+ {
+ const wxChar c = text[i];
+ unsigned int c_int = (unsigned int)c;
+
+ if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
+ {
+ w = s_fontWidthCache.m_widths[c_int];
+ }
+ else
+ {
+ DoGetTextExtent(c, &w, &h);
+ if (c_int < FWC_SIZE)
+ s_fontWidthCache.m_widths[c_int] = w;
+ }
+
+ totalWidth += w;
+ widths[i] = totalWidth;
+ }
+
+ return true;
+}
+
+void wxImplDC::GetMultiLineTextExtent(const wxString& text,
+ wxCoord *x,
+ wxCoord *y,
+ wxCoord *h,
+ const wxFont *font) const
+{
+ wxCoord widthTextMax = 0, widthLine,
+ heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
+
+ wxString curLine;
+ for ( const wxChar *pc = text; ; pc++ )
+ {
+ if ( *pc == _T('\n') || *pc == _T('\0') )
+ {
+ if ( curLine.empty() )
+ {
+ // we can't use GetTextExtent - it will return 0 for both width
+ // and height and an empty line should count in height
+ // calculation
+
+ // assume that this line has the same height as the previous
+ // one
+ if ( !heightLineDefault )
+ heightLineDefault = heightLine;
+
+ if ( !heightLineDefault )
+ {
+ // but we don't know it yet - choose something reasonable
+ DoGetTextExtent(_T("W"), NULL, &heightLineDefault,
+ NULL, NULL, font);
+ }
+
+ heightTextTotal += heightLineDefault;
+ }
+ else
+ {
+ DoGetTextExtent(curLine, &widthLine, &heightLine,
+ NULL, NULL, font);
+ if ( widthLine > widthTextMax )
+ widthTextMax = widthLine;
+ heightTextTotal += heightLine;
+ }
+
+ if ( *pc == _T('\n') )
+ {
+ curLine.clear();
+ }
+ else
+ {
+ // the end of string
+ break;
+ }
+ }
+ else
+ {
+ curLine += *pc;
+ }
+ }
+
+ if ( x )
+ *x = widthTextMax;
+ if ( y )
+ *y = heightTextTotal;
+ if ( h )
+ *h = heightLine;
+}
+
+void wxImplDC::DoDrawCheckMark(wxCoord x1, wxCoord y1,
+ wxCoord width, wxCoord height)
+{
+ wxCHECK_RET( IsOk(), wxT("invalid window dc") );
+
+ wxCoord x2 = x1 + width,
+ y2 = y1 + height;
+
+ // the pen width is calibrated to give 3 for width == height == 10
+ wxDCPenChanger pen( *m_owner, wxPen(GetTextForeground(), (width + height + 1)/7));
+
+ // we're drawing a scaled version of wx/generic/tick.xpm here
+ wxCoord x3 = x1 + (4*width) / 10, // x of the tick bottom
+ y3 = y1 + height / 2; // y of the left tick branch
+ DoDrawLine(x1, y3, x3, y2);
+ DoDrawLine(x3, y2, x2, y1);
+
+ CalcBoundingBox(x1, y1);
+ CalcBoundingBox(x2, y2);
+}
+
+bool
+wxImplDC::DoStretchBlit(wxCoord xdest, wxCoord ydest,
+ wxCoord dstWidth, wxCoord dstHeight,
+ wxDC *source,
+ wxCoord xsrc, wxCoord ysrc,
+ wxCoord srcWidth, wxCoord srcHeight,
+ int rop,
+ bool useMask,
+ wxCoord xsrcMask,
+ wxCoord ysrcMask)
+{
+ wxCHECK_MSG( srcWidth && srcHeight && dstWidth && dstHeight, false,
+ _T("invalid blit size") );
+
+ // emulate the stretching by modifying the DC scale
+ double xscale = (double)srcWidth/dstWidth,
+ yscale = (double)srcHeight/dstHeight;
+
+ double xscaleOld, yscaleOld;
+ GetUserScale(&xscaleOld, &yscaleOld);
+ SetUserScale(xscaleOld/xscale, yscaleOld/yscale);
+
+ bool rc = DoBlit(wxCoord(xdest*xscale), wxCoord(ydest*yscale),
+ wxCoord(dstWidth*xscale), wxCoord(dstHeight*yscale),
+ source,
+ xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
+
+ SetUserScale(xscaleOld, yscaleOld);
+
+ return rc;
+}
+
+#if 0
+void wxImplDC::DrawLines(const wxList *list, wxCoord xoffset, wxCoord yoffset)
+{
+ int n = list->GetCount();
+ wxPoint *points = new wxPoint[n];
+
+ int i = 0;
+ for ( wxList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ )
+ {
+ wxPoint *point = (wxPoint *)node->GetData();
+ points[i].x = point->x;
+ points[i].y = point->y;
+ }
+
+ DoDrawLines(n, points, xoffset, yoffset);
+
+ delete [] points;
+}
+
+void wxImplDC::DrawPolygon(const wxList *list,
+ wxCoord xoffset, wxCoord yoffset,
+ int fillStyle)
+{
+ int n = list->GetCount();
+ wxPoint *points = new wxPoint[n];
+
+ int i = 0;
+ for ( wxList::compatibility_iterator node = list->GetFirst(); node; node = node->GetNext(), i++ )
+ {
+ wxPoint *point = (wxPoint *)node->GetData();
+ points[i].x = point->x;
+ points[i].y = point->y;
+ }
+
+ DoDrawPolygon(n, points, xoffset, yoffset, fillStyle);
+
+ delete [] points;
+}
+#endif
+
+void
+wxImplDC::DoDrawPolyPolygon(int n,
+ int count[],
+ wxPoint points[],
+ wxCoord xoffset, wxCoord yoffset,
+ int fillStyle)
+{
+ if ( n == 1 )
+ {
+ DoDrawPolygon(count[0], points, xoffset, yoffset, fillStyle);
+ return;
+ }
+
+ int i, j, lastOfs;
+ wxPoint* pts;
+ wxPen pen;
+
+ for (i = j = lastOfs = 0; i < n; i++)
+ {
+ lastOfs = j;
+ j += count[i];
+ }
+ pts = new wxPoint[j+n-1];
+ for (i = 0; i < j; i++)
+ pts[i] = points[i];
+ for (i = 2; i <= n; i++)
+ {
+ lastOfs -= count[n-i];
+ pts[j++] = pts[lastOfs];
+ }
+
+ pen = GetPen();
+ SetPen(wxPen(*wxBLACK, 0, wxTRANSPARENT));
+ DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle);
+ SetPen(pen);
+ for (i = j = 0; i < n; i++)
+ {
+ DoDrawLines(count[i], pts+j, xoffset, yoffset);
+ j += count[i];
+ }
+ delete[] pts;
+}
+
+#if wxUSE_SPLINES
+
+// TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
+void wxImplDC::DoDrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3)
+{
+ wxList point_list;
+
+ wxPoint *point1 = new wxPoint;
+ point1->x = x1; point1->y = y1;
+ point_list.Append((wxObject*)point1);
+
+ wxPoint *point2 = new wxPoint;
+ point2->x = x2; point2->y = y2;
+ point_list.Append((wxObject*)point2);
+
+ wxPoint *point3 = new wxPoint;
+ point3->x = x3; point3->y = y3;
+ point_list.Append((wxObject*)point3);
+
+ DoDrawSpline(&point_list);
+
+ for( wxList::compatibility_iterator node = point_list.GetFirst(); node; node = node->GetNext() )
+ {
+ wxPoint *p = (wxPoint *)node->GetData();
+ delete p;
+ }
+}
+
+void wxImplDC::DoDrawSpline(int n, wxPoint points[])
+{
+ wxList list;
+ for (int i =0; i < n; i++)
+ {
+ list.Append((wxObject*)&points[i]);
+ }
+
+ DoDrawSpline(&list);
+}
+
+// ----------------------------------- spline code ----------------------------------------
+
+void wx_quadratic_spline(double a1, double b1, double a2, double b2,
+ double a3, double b3, double a4, double b4);
+void wx_clear_stack();
+int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
+ double *y3, double *x4, double *y4);
+void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
+ double x4, double y4);
+static bool wx_spline_add_point(double x, double y);
+static void wx_spline_draw_point_array(wxDC *dc);
+
+wxList wx_spline_point_list;
+
+#define half(z1, z2) ((z1+z2)/2.0)
+#define THRESHOLD 5
+
+/* iterative version */
+
+void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
+ double b4)
+{
+ register double xmid, ymid;
+ double x1, y1, x2, y2, x3, y3, x4, y4;
+
+ wx_clear_stack();
+ wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
+
+ while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
+ xmid = (double)half(x2, x3);
+ ymid = (double)half(y2, y3);
+ if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
+ fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
+ wx_spline_add_point( x1, y1 );
+ wx_spline_add_point( xmid, ymid );
+ } else {
+ wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
+ (double)half(x3, x4), (double)half(y3, y4), x4, y4);
+ wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
+ (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
+ }
+ }
+}
+
+/* utilities used by spline drawing routines */
+
+typedef struct wx_spline_stack_struct {
+ double x1, y1, x2, y2, x3, y3, x4, y4;
+} Stack;
+
+#define SPLINE_STACK_DEPTH 20
+static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
+static Stack *wx_stack_top;
+static int wx_stack_count;
+
+void wx_clear_stack()
+{
+ wx_stack_top = wx_spline_stack;
+ wx_stack_count = 0;
+}
+
+void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
+{
+ wx_stack_top->x1 = x1;
+ wx_stack_top->y1 = y1;
+ wx_stack_top->x2 = x2;
+ wx_stack_top->y2 = y2;
+ wx_stack_top->x3 = x3;
+ wx_stack_top->y3 = y3;
+ wx_stack_top->x4 = x4;
+ wx_stack_top->y4 = y4;
+ wx_stack_top++;
+ wx_stack_count++;
+}
+
+int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
+ double *x3, double *y3, double *x4, double *y4)
+{
+ if (wx_stack_count == 0)
+ return (0);
+ wx_stack_top--;
+ wx_stack_count--;
+ *x1 = wx_stack_top->x1;
+ *y1 = wx_stack_top->y1;
+ *x2 = wx_stack_top->x2;
+ *y2 = wx_stack_top->y2;
+ *x3 = wx_stack_top->x3;
+ *y3 = wx_stack_top->y3;
+ *x4 = wx_stack_top->x4;
+ *y4 = wx_stack_top->y4;
+ return (1);
+}
+
+static bool wx_spline_add_point(double x, double y)
+{
+ wxPoint *point = new wxPoint ;
+ point->x = (int) x;
+ point->y = (int) y;
+ wx_spline_point_list.Append((wxObject*)point);
+ return true;
+}
+
+static void wx_spline_draw_point_array(wxDC *dc)
+{
+// dc->DrawLines(&wx_spline_point_list, 0, 0 ); wxList
+ wxList::compatibility_iterator node = wx_spline_point_list.GetFirst();
+ while (node)
+ {
+ wxPoint *point = (wxPoint *)node->GetData();
+ delete point;
+ wx_spline_point_list.Erase(node);
+ node = wx_spline_point_list.GetFirst();
+ }
+}
+
+void wxImplDC::DoDrawSpline( wxList *points )
+{
+ wxCHECK_RET( IsOk(), wxT("invalid window dc") );
+
+ wxPoint *p;
+ double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
+ double x1, y1, x2, y2;
+
+ wxList::compatibility_iterator node = points->GetFirst();
+ if (!node)
+ // empty list
+ return;
+
+ p = (wxPoint *)node->GetData();
+
+ x1 = p->x;
+ y1 = p->y;
+
+ node = node->GetNext();
+ p = (wxPoint *)node->GetData();
+
+ x2 = p->x;
+ y2 = p->y;
+ cx1 = (double)((x1 + x2) / 2);
+ cy1 = (double)((y1 + y2) / 2);
+ cx2 = (double)((cx1 + x2) / 2);
+ cy2 = (double)((cy1 + y2) / 2);
+
+ wx_spline_add_point(x1, y1);
+
+ while ((node = node->GetNext())
+#if !wxUSE_STL
+ != NULL
+#endif // !wxUSE_STL
+ )
+ {
+ p = (wxPoint *)node->GetData();
+ x1 = x2;
+ y1 = y2;
+ x2 = p->x;
+ y2 = p->y;
+ cx4 = (double)(x1 + x2) / 2;
+ cy4 = (double)(y1 + y2) / 2;
+ cx3 = (double)(x1 + cx4) / 2;
+ cy3 = (double)(y1 + cy4) / 2;
+
+ wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
+
+ cx1 = cx4;
+ cy1 = cy4;
+ cx2 = (double)(cx1 + x2) / 2;
+ cy2 = (double)(cy1 + y2) / 2;
+ }
+
+ wx_spline_add_point( cx1, cy1 );
+ wx_spline_add_point( x2, y2 );
+
+ wx_spline_draw_point_array( m_owner );
+}
+
+#endif // wxUSE_SPLINES
+
+
+
+void wxImplDC::DoGradientFillLinear(const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ wxDirection nDirection)
+{
+ // save old pen
+ wxPen oldPen = m_pen;
+ wxBrush oldBrush = m_brush;
+
+ wxUint8 nR1 = initialColour.Red();
+ wxUint8 nG1 = initialColour.Green();
+ wxUint8 nB1 = initialColour.Blue();
+ wxUint8 nR2 = destColour.Red();
+ wxUint8 nG2 = destColour.Green();
+ wxUint8 nB2 = destColour.Blue();
+ wxUint8 nR, nG, nB;
+
+ if ( nDirection == wxEAST || nDirection == wxWEST )
+ {
+ wxInt32 x = rect.GetWidth();
+ wxInt32 w = x; // width of area to shade
+ wxInt32 xDelta = w/256; // height of one shade bend
+ if (xDelta < 1)
+ xDelta = 1;
+
+ while (x >= xDelta)
+ {
+ x -= xDelta;
+ if (nR1 > nR2)
+ nR = nR1 - (nR1-nR2)*(w-x)/w;
+ else
+ nR = nR1 + (nR2-nR1)*(w-x)/w;
+
+ if (nG1 > nG2)
+ nG = nG1 - (nG1-nG2)*(w-x)/w;
+ else
+ nG = nG1 + (nG2-nG1)*(w-x)/w;
+
+ if (nB1 > nB2)
+ nB = nB1 - (nB1-nB2)*(w-x)/w;
+ else
+ nB = nB1 + (nB2-nB1)*(w-x)/w;
+
+ wxColour colour(nR,nG,nB);
+ SetPen(wxPen(colour, 1, wxSOLID));
+ SetBrush(wxBrush(colour));
+ if(nDirection == wxEAST)
+ DoDrawRectangle(rect.GetRight()-x-xDelta+1, rect.GetTop(),
+ xDelta, rect.GetHeight());
+ else //nDirection == wxWEST
+ DoDrawRectangle(rect.GetLeft()+x, rect.GetTop(),
+ xDelta, rect.GetHeight());
+ }
+ }
+ else // nDirection == wxNORTH || nDirection == wxSOUTH
+ {
+ wxInt32 y = rect.GetHeight();
+ wxInt32 w = y; // height of area to shade
+ wxInt32 yDelta = w/255; // height of one shade bend
+ if (yDelta < 1)
+ yDelta = 1;
+
+ while (y > 0)
+ {
+ y -= yDelta;
+ if (nR1 > nR2)
+ nR = nR1 - (nR1-nR2)*(w-y)/w;
+ else
+ nR = nR1 + (nR2-nR1)*(w-y)/w;
+
+ if (nG1 > nG2)
+ nG = nG1 - (nG1-nG2)*(w-y)/w;
+ else
+ nG = nG1 + (nG2-nG1)*(w-y)/w;
+
+ if (nB1 > nB2)
+ nB = nB1 - (nB1-nB2)*(w-y)/w;
+ else
+ nB = nB1 + (nB2-nB1)*(w-y)/w;
+
+ wxColour colour(nR,nG,nB);
+ SetPen(wxPen(colour, 1, wxSOLID));
+ SetBrush(wxBrush(colour));
+ if(nDirection == wxNORTH)
+ DoDrawRectangle(rect.GetLeft(), rect.GetTop()+y,
+ rect.GetWidth(), yDelta);
+ else //nDirection == wxSOUTH
+ DoDrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta+1,
+ rect.GetWidth(), yDelta);
+ }
+ }
+
+ SetPen(oldPen);
+ SetBrush(oldBrush);
+}
+
+void wxImplDC::DoGradientFillConcentric(const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ const wxPoint& circleCenter)
+{
+ //save the old pen color
+ wxColour oldPenColour = m_pen.GetColour();
+
+ wxUint8 nR1 = destColour.Red();
+ wxUint8 nG1 = destColour.Green();
+ wxUint8 nB1 = destColour.Blue();
+ wxUint8 nR2 = initialColour.Red();
+ wxUint8 nG2 = initialColour.Green();
+ wxUint8 nB2 = initialColour.Blue();
+ wxUint8 nR, nG, nB;
+
+
+ //Radius
+ wxInt32 cx = rect.GetWidth() / 2;
+ wxInt32 cy = rect.GetHeight() / 2;
+ wxInt32 nRadius;
+ if (cx < cy)
+ nRadius = cx;
+ else
+ nRadius = cy;
+
+ //Offset of circle
+ wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2);
+ wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2);
+
+ for ( wxInt32 x = 0; x < rect.GetWidth(); x++ )
+ {
+ for ( wxInt32 y = 0; y < rect.GetHeight(); y++ )
+ {
+ //get color difference
+ wxInt32 nGradient = ((nRadius -
+ (wxInt32)sqrt(
+ pow((double)(x - cx - nCircleOffX), 2) +
+ pow((double)(y - cy - nCircleOffY), 2)
+ )) * 100) / nRadius;
+
+ //normalize Gradient
+ if (nGradient < 0 )
+ nGradient = 0;
+
+ //get dest colors
+ nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100));
+ nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100));
+ nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100));
+
+ //set the pixel
+ m_pen.SetColour(wxColour(nR,nG,nB));
+ DoDrawPoint(x + rect.GetLeft(), y + rect.GetTop());
+ }
+ }
+ //return old pen color
+ m_pen.SetColour(oldPenColour);
+}
+
+//-----------------------------------------------------------------------------
+// wxDC
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
+
+void wxDC::DrawLabel(const wxString& text,
+ const wxBitmap& bitmap,
+ const wxRect& rect,
+ int alignment,
+ int indexAccel,
+ wxRect *rectBounding)
+{
+ // find the text position
+ wxCoord widthText, heightText, heightLine;
+ GetMultiLineTextExtent(text, &widthText, &heightText, &heightLine);
+
+ wxCoord width, height;
+ if ( bitmap.Ok() )
+ {
+ width = widthText + bitmap.GetWidth();
+ height = bitmap.GetHeight();
+ }
+ else // no bitmap
+ {
+ width = widthText;
+ height = heightText;
+ }
+
+ wxCoord x, y;
+ if ( alignment & wxALIGN_RIGHT )
+ {
+ x = rect.GetRight() - width;
+ }
+ else if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
+ {
+ x = (rect.GetLeft() + rect.GetRight() + 1 - width) / 2;
+ }
+ else // alignment & wxALIGN_LEFT
+ {
+ x = rect.GetLeft();
+ }
+
+ if ( alignment & wxALIGN_BOTTOM )
+ {
+ y = rect.GetBottom() - height;
+ }
+ else if ( alignment & wxALIGN_CENTRE_VERTICAL )
+ {
+ y = (rect.GetTop() + rect.GetBottom() + 1 - height) / 2;
+ }
+ else // alignment & wxALIGN_TOP
+ {
+ y = rect.GetTop();
+ }
+
+ // draw the bitmap first
+ wxCoord x0 = x,
+ y0 = y,
+ width0 = width;
+ if ( bitmap.Ok() )
+ {
+ DrawBitmap(bitmap, x, y, true /* use mask */);
+
+ wxCoord offset = bitmap.GetWidth() + 4;
+ x += offset;
+ width -= offset;
+
+ y += (height - heightText) / 2;
+ }
+
+ // we will draw the underscore under the accel char later
+ wxCoord startUnderscore = 0,
+ endUnderscore = 0,
+ yUnderscore = 0;
+
+ // split the string into lines and draw each of them separately
+ wxString curLine;
+ for ( wxString::const_iterator pc = text.begin(); ; ++pc )
+ {
+ if ( *pc == _T('\n') || pc == text.end() )
+ {
+ int xRealStart = x; // init it here to avoid compielr warnings
+
+ if ( !curLine.empty() )
+ {
+ // NB: can't test for !(alignment & wxALIGN_LEFT) because
+ // wxALIGN_LEFT is 0
+ if ( alignment & (wxALIGN_RIGHT | wxALIGN_CENTRE_HORIZONTAL) )
+ {
+ wxCoord widthLine;
+ GetTextExtent(curLine, &widthLine, NULL);
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
+ if ( alignment & wxALIGN_RIGHT )
+ {
+ xRealStart += width - widthLine;
+ }
+ else // if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
+ {
+ xRealStart += (width - widthLine) / 2;
+ }
+ }
+ //else: left aligned, nothing to do
-// For compilers that support precompilation, includes "wx.h".
-#include "wx/wxprec.h"
+ DrawText(curLine, xRealStart, y);
+ }
-#ifdef __BORLANDC__
- #pragma hdrstop
-#endif
+ y += heightLine;
+
+ // do we have underscore in this line? we can check yUnderscore
+ // because it is set below to just y + heightLine if we do
+ if ( y == yUnderscore )
+ {
+ // adjust the horz positions to account for the shift
+ startUnderscore += xRealStart;
+ endUnderscore += xRealStart;
+ }
+
+ if ( pc == text.end() )
+ break;
+
+ curLine.clear();
+ }
+ else // not end of line
+ {
+ if ( pc - text.begin() == indexAccel )
+ {
+ // remeber to draw underscore here
+ GetTextExtent(curLine, &startUnderscore, NULL);
+ curLine += *pc;
+ GetTextExtent(curLine, &endUnderscore, NULL);
+
+ yUnderscore = y + heightLine;
+ }
+ else
+ {
+ curLine += *pc;
+ }
+ }
+ }
+
+ // draw the underscore if found
+ if ( startUnderscore != endUnderscore )
+ {
+ // it should be of the same colour as text
+ SetPen(wxPen(GetTextForeground(), 0, wxSOLID));
+
+ yUnderscore--;
+
+ DrawLine(startUnderscore, yUnderscore, endUnderscore, yUnderscore);
+ }
+
+ // return bounding rect if requested
+ if ( rectBounding )
+ {
+ *rectBounding = wxRect(x, y - heightText, widthText, heightText);
+ }
+
+ CalcBoundingBox(x0, y0);
+ CalcBoundingBox(x0 + width0, y0 + height);
+}
+
+#if WXWIN_COMPATIBILITY_2_8
+ // for compatibility with the old code when wxCoord was long everywhere
+void wxDC::GetTextExtent(const wxString& string,
+ long *x, long *y,
+ long *descent,
+ long *externalLeading,
+ const wxFont *theFont) const
+ {
+ wxCoord x2, y2, descent2, externalLeading2;
+ m_pimpl->DoGetTextExtent(string, &x2, &y2,
+ &descent2, &externalLeading2,
+ theFont);
+ if ( x )
+ *x = x2;
+ if ( y )
+ *y = y2;
+ if ( descent )
+ *descent = descent2;
+ if ( externalLeading )
+ *externalLeading = externalLeading2;
+ }
+
+void wxDC::GetLogicalOrigin(long *x, long *y) const
+ {
+ wxCoord x2, y2;
+ m_pimpl->DoGetLogicalOrigin(&x2, &y2);
+ if ( x )
+ *x = x2;
+ if ( y )
+ *y = y2;
+ }
+
+void wxDC::GetDeviceOrigin(long *x, long *y) const
+ {
+ wxCoord x2, y2;
+ m_pimpl->DoGetDeviceOrigin(&x2, &y2);
+ if ( x )
+ *x = x2;
+ if ( y )
+ *y = y2;
+ }
+
+void wxDC::GetClippingBox(long *x, long *y, long *w, long *h) const
+ {
+ wxCoord xx,yy,ww,hh;
+ m_pimpl->DoGetClippingBox(&xx, &yy, &ww, &hh);
+ if (x) *x = xx;
+ if (y) *y = yy;
+ if (w) *w = ww;
+ if (h) *h = hh;
+ }
+
+#endif // WXWIN_COMPATIBILITY_2_8
+
+
+#else // wxUSE_NEW_DC
-#include "wx/dc.h"
-#include <math.h>
+// bool wxDCBase::sm_cacheing = false;
-// bool wxDCBase::sm_cacheing = FALSE;
+IMPLEMENT_ABSTRACT_CLASS(wxDCBase, wxObject)
// ============================================================================
// implementation
// ============================================================================
+IMPLEMENT_DYNAMIC_CLASS(wxBufferedDC, wxMemoryDC)
+IMPLEMENT_ABSTRACT_CLASS(wxBufferedPaintDC, wxBufferedDC)
+
+wxDCBase::wxDCBase()
+ : m_colour(wxColourDisplay())
+ , m_ok(true)
+ , m_clipping(false)
+ , m_isInteractive(0)
+ , m_isBBoxValid(false)
+ , m_logicalOriginX(0), m_logicalOriginY(0)
+ , m_deviceOriginX(0), m_deviceOriginY(0)
+ , m_deviceLocalOriginX(0), m_deviceLocalOriginY(0)
+ , m_logicalScaleX(1.0), m_logicalScaleY(1.0)
+ , m_userScaleX(1.0), m_userScaleY(1.0)
+ , m_scaleX(1.0), m_scaleY(1.0)
+ , m_signX(1), m_signY(1)
+ , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0)
+ , m_clipX1(0), m_clipY1(0), m_clipX2(0), m_clipY2(0)
+ , m_logicalFunction(wxCOPY)
+ , m_backgroundMode(wxTRANSPARENT)
+ , m_mappingMode(wxMM_TEXT)
+ , m_pen()
+ , m_brush()
+ , m_backgroundBrush(*wxTRANSPARENT_BRUSH)
+ , m_textForegroundColour(*wxBLACK)
+ , m_textBackgroundColour(*wxWHITE)
+ , m_font()
+#if wxUSE_PALETTE
+ , m_palette()
+ , m_hasCustomPalette(false)
+#endif // wxUSE_PALETTE
+{
+ m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() /
+ (double)wxGetDisplaySizeMM().GetWidth();
+ m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() /
+ (double)wxGetDisplaySizeMM().GetHeight();
+
+ ResetBoundingBox();
+ ResetClipping();
+}
+
+wxDCBase::~wxDCBase()
+{
+}
+
+#if WXWIN_COMPATIBILITY_2_6
+void wxDCBase::BeginDrawing()
+{
+}
+
+void wxDCBase::EndDrawing()
+{
+}
+#endif // WXWIN_COMPATIBILITY_2_6
+
+#if WXWIN_COMPATIBILITY_2_8
+ // for compatibility with the old code when wxCoord was long everywhere
+void wxDCBase::GetTextExtent(const wxString& string,
+ long *x, long *y,
+ long *descent,
+ long *externalLeading,
+ const wxFont *theFont) const
+ {
+ wxCoord x2, y2, descent2, externalLeading2;
+ DoGetTextExtent(string, &x2, &y2,
+ &descent2, &externalLeading2,
+ theFont);
+ if ( x )
+ *x = x2;
+ if ( y )
+ *y = y2;
+ if ( descent )
+ *descent = descent2;
+ if ( externalLeading )
+ *externalLeading = externalLeading2;
+ }
+
+void wxDCBase::GetLogicalOrigin(long *x, long *y) const
+ {
+ wxCoord x2, y2;
+ DoGetLogicalOrigin(&x2, &y2);
+ if ( x )
+ *x = x2;
+ if ( y )
+ *y = y2;
+ }
+
+void wxDCBase::GetDeviceOrigin(long *x, long *y) const
+ {
+ wxCoord x2, y2;
+ DoGetDeviceOrigin(&x2, &y2);
+ if ( x )
+ *x = x2;
+ if ( y )
+ *y = y2;
+ }
+
+void wxDCBase::GetClippingBox(long *x, long *y, long *w, long *h) const
+ {
+ wxCoord xx,yy,ww,hh;
+ DoGetClippingBox(&xx, &yy, &ww, &hh);
+ if (x) *x = xx;
+ if (y) *y = yy;
+ if (w) *w = ww;
+ if (h) *h = hh;
+ }
+#endif // WXWIN_COMPATIBILITY_2_8
+
+
+
+// ----------------------------------------------------------------------------
+// coordinate conversions and transforms
+// ----------------------------------------------------------------------------
+
+wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
+{
+ return wxRound((double)(x - m_deviceOriginX - m_deviceLocalOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
+}
+
+wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
+{
+ return wxRound((double)(y - m_deviceOriginY - m_deviceLocalOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
+}
+
+wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
+{
+ return wxRound((double)(x) / m_scaleX);
+}
+
+wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
+{
+ return wxRound((double)(y) / m_scaleY);
+}
+
+wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
+{
+ return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX + m_deviceLocalOriginX;
+}
+
+wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
+{
+ return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY + m_deviceLocalOriginY;
+}
+
+wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
+{
+ return wxRound((double)(x) * m_scaleX);
+}
+
+wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
+{
+ return wxRound((double)(y) * m_scaleY);
+}
+
+void wxDCBase::ComputeScaleAndOrigin()
+{
+ m_scaleX = m_logicalScaleX * m_userScaleX;
+ m_scaleY = m_logicalScaleY * m_userScaleY;
+}
+
+void wxDCBase::SetMapMode( int mode )
+{
+ switch (mode)
+ {
+ case wxMM_TWIPS:
+ SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
+ break;
+ case wxMM_POINTS:
+ SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
+ break;
+ case wxMM_METRIC:
+ SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
+ break;
+ case wxMM_LOMETRIC:
+ SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
+ break;
+ default:
+ case wxMM_TEXT:
+ SetLogicalScale( 1.0, 1.0 );
+ break;
+ }
+ m_mappingMode = mode;
+}
+
+void wxDCBase::SetUserScale( double x, double y )
+{
+ // allow negative ? -> no
+ m_userScaleX = x;
+ m_userScaleY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxDCBase::SetLogicalScale( double x, double y )
+{
+ // allow negative ?
+ m_logicalScaleX = x;
+ m_logicalScaleY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxDCBase::SetLogicalOrigin( wxCoord x, wxCoord y )
+{
+ m_logicalOriginX = x * m_signX;
+ m_logicalOriginY = y * m_signY;
+ ComputeScaleAndOrigin();
+}
+
+void wxDCBase::SetDeviceOrigin( wxCoord x, wxCoord y )
+{
+ m_deviceOriginX = x;
+ m_deviceOriginY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxDCBase::SetDeviceLocalOrigin( wxCoord x, wxCoord y )
+{
+ m_deviceLocalOriginX = x;
+ m_deviceLocalOriginY = y;
+ ComputeScaleAndOrigin();
+}
+
+void wxDCBase::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
+{
+ // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there
+ // wxWidgets 2.9: no longer override it
+ m_signX = (xLeftRight ? 1 : -1);
+ m_signY = (yBottomUp ? -1 : 1);
+ ComputeScaleAndOrigin();
+}
+
// ----------------------------------------------------------------------------
// special symbols
// ----------------------------------------------------------------------------
wxCoord x2 = x1 + width,
y2 = y1 + height;
- // this is to yield width of 3 for width == height == 10
- SetPen(wxPen(GetTextForeground(), (width + height + 1) / 7, wxSOLID));
+ // the pen width is calibrated to give 3 for width == height == 10
+ wxDCPenChanger pen((wxDC&)*this,
+ wxPen(GetTextForeground(), (width + height + 1)/7));
// we're drawing a scaled version of wx/generic/tick.xpm here
wxCoord x3 = x1 + (4*width) / 10, // x of the tick bottom
CalcBoundingBox(x2, y2);
}
+// ----------------------------------------------------------------------------
+// stubs for functions not implemented in all ports
+// ----------------------------------------------------------------------------
+
+bool
+wxDCBase::DoStretchBlit(wxCoord xdest, wxCoord ydest,
+ wxCoord dstWidth, wxCoord dstHeight,
+ wxDC *source,
+ wxCoord xsrc, wxCoord ysrc,
+ wxCoord srcWidth, wxCoord srcHeight,
+ int rop,
+ bool useMask,
+ wxCoord xsrcMask,
+ wxCoord ysrcMask)
+{
+ wxCHECK_MSG( srcWidth && srcHeight && dstWidth && dstHeight, false,
+ _T("invalid blit size") );
+
+ // emulate the stretching by modifying the DC scale
+ double xscale = (double)srcWidth/dstWidth,
+ yscale = (double)srcHeight/dstHeight;
+
+ double xscaleOld, yscaleOld;
+ GetUserScale(&xscaleOld, &yscaleOld);
+ SetUserScale(xscaleOld/xscale, yscaleOld/yscale);
+
+ bool rc = DoBlit(wxCoord(xdest*xscale), wxCoord(ydest*yscale),
+ wxCoord(dstWidth*xscale), wxCoord(dstHeight*yscale),
+ source,
+ xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
+
+ SetUserScale(xscaleOld, yscaleOld);
+
+ return rc;
+}
+
// ----------------------------------------------------------------------------
// line/polygons
// ----------------------------------------------------------------------------
point->x = (int) x;
point->y = (int) y;
wx_spline_point_list.Append((wxObject*)point);
- return TRUE;
+ return true;
}
static void wx_spline_draw_point_array(wxDCBase *dc)
double x1, y1, x2, y2;
wxList::compatibility_iterator node = points->GetFirst();
+ if (!node)
+ // empty list
+ return;
+
p = (wxPoint *)node->GetData();
x1 = p->x;
// Each element of the widths array will be the width of the string up to and
-// including the coresoponding character in text. This is the generic
+// including the corresponding character in text. This is the generic
// implementation, the port-specific classes should do this with native APIs
// if available and if faster. Note: pango_layout_index_to_pos is much slower
// than calling GetTextExtent!!
-#define FWC_SIZE 128
+#define FWC_SIZE 256
class FontWidthCache
{
public:
FontWidthCache() : m_scaleX(1), m_widths(NULL) { }
~FontWidthCache() { delete []m_widths; }
-
- void Reset()
- {
- if (!m_widths)
- m_widths = new int[FWC_SIZE];
-
- memset(m_widths, 0, sizeof(int)*FWC_SIZE);
- }
-
+
+ void Reset()
+ {
+ if (!m_widths)
+ m_widths = new int[FWC_SIZE];
+
+ memset(m_widths, 0, sizeof(int)*FWC_SIZE);
+ }
+
wxFont m_font;
double m_scaleX;
int *m_widths;
{
int totalWidth = 0;
- size_t i, len = text.Length();
+ const size_t len = text.length();
widths.Empty();
widths.Add(0, len);
- int w, h;
-
+
// reset the cache if font or horizontal scale have changed
- if (!s_fontWidthCache.m_widths ||
- (s_fontWidthCache.m_scaleX != m_scaleX) ||
- (s_fontWidthCache.m_font != GetFont()))
+ if ( !s_fontWidthCache.m_widths ||
+ !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) ||
+ (s_fontWidthCache.m_font != GetFont()) )
{
s_fontWidthCache.Reset();
s_fontWidthCache.m_font = GetFont();
// Calculate the position of each character based on the widths of
// the previous characters
- for (i=0; i<len; i++)
+ int w, h;
+ for ( size_t i = 0; i < len; i++ )
{
const wxChar c = text[i];
unsigned int c_int = (unsigned int)c;
- if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
+ if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
{
w = s_fontWidthCache.m_widths[c_int];
}
- else
+ else
{
GetTextExtent(c, &w, &h);
if (c_int < FWC_SIZE)
totalWidth += w;
widths[i] = totalWidth;
}
-
+
return true;
}
wxCoord *x,
wxCoord *y,
wxCoord *h,
- wxFont *font)
+ const wxFont *font) const
{
wxCoord widthTextMax = 0, widthLine,
heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
wxString curLine;
- for ( const wxChar *pc = text; ; pc++ )
+ for ( wxString::const_iterator pc = text.begin(); ; ++pc )
{
- if ( *pc == _T('\n') || *pc == _T('\0') )
+ if ( pc == text.end() || *pc == _T('\n') )
{
if ( curLine.empty() )
{
heightTextTotal += heightLine;
}
- if ( *pc == _T('\n') )
+ if ( pc == text.end() )
{
- curLine.clear();
+ break;
}
- else
+ else // '\n'
{
- // the end of string
- break;
+ curLine.clear();
}
}
else
width0 = width;
if ( bitmap.Ok() )
{
- DrawBitmap(bitmap, x, y, TRUE /* use mask */);
+ DrawBitmap(bitmap, x, y, true /* use mask */);
wxCoord offset = bitmap.GetWidth() + 4;
x += offset;
// split the string into lines and draw each of them separately
wxString curLine;
- for ( const wxChar *pc = text; ; pc++ )
+ for ( wxString::const_iterator pc = text.begin(); ; ++pc )
{
- if ( *pc == _T('\n') || *pc == _T('\0') )
+ if ( pc == text.end() || *pc == _T('\n') )
{
int xRealStart = x; // init it here to avoid compielr warnings
endUnderscore += xRealStart;
}
- if ( *pc == _T('\0') )
+ if ( pc == text.end() )
break;
curLine.clear();
}
else // not end of line
{
- if ( pc - text.c_str() == indexAccel )
+ if ( pc - text.begin() == indexAccel )
{
// remeber to draw underscore here
GetTextExtent(curLine, &startUnderscore, NULL);
CalcBoundingBox(x0 + width0, y0 + height);
}
+
+void wxDCBase::DoGradientFillLinear(const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ wxDirection nDirection)
+{
+ // save old pen
+ wxPen oldPen = m_pen;
+ wxBrush oldBrush = m_brush;
+
+ wxUint8 nR1 = initialColour.Red();
+ wxUint8 nG1 = initialColour.Green();
+ wxUint8 nB1 = initialColour.Blue();
+ wxUint8 nR2 = destColour.Red();
+ wxUint8 nG2 = destColour.Green();
+ wxUint8 nB2 = destColour.Blue();
+ wxUint8 nR, nG, nB;
+
+ if ( nDirection == wxEAST || nDirection == wxWEST )
+ {
+ wxInt32 x = rect.GetWidth();
+ wxInt32 w = x; // width of area to shade
+ wxInt32 xDelta = w/256; // height of one shade bend
+ if (xDelta < 1)
+ xDelta = 1;
+
+ while (x >= xDelta)
+ {
+ x -= xDelta;
+ if (nR1 > nR2)
+ nR = nR1 - (nR1-nR2)*(w-x)/w;
+ else
+ nR = nR1 + (nR2-nR1)*(w-x)/w;
+
+ if (nG1 > nG2)
+ nG = nG1 - (nG1-nG2)*(w-x)/w;
+ else
+ nG = nG1 + (nG2-nG1)*(w-x)/w;
+
+ if (nB1 > nB2)
+ nB = nB1 - (nB1-nB2)*(w-x)/w;
+ else
+ nB = nB1 + (nB2-nB1)*(w-x)/w;
+
+ wxColour colour(nR,nG,nB);
+ SetPen(wxPen(colour, 1, wxSOLID));
+ SetBrush(wxBrush(colour));
+ if(nDirection == wxEAST)
+ DrawRectangle(rect.GetRight()-x-xDelta+1, rect.GetTop(),
+ xDelta, rect.GetHeight());
+ else //nDirection == wxWEST
+ DrawRectangle(rect.GetLeft()+x, rect.GetTop(),
+ xDelta, rect.GetHeight());
+ }
+ }
+ else // nDirection == wxNORTH || nDirection == wxSOUTH
+ {
+ wxInt32 y = rect.GetHeight();
+ wxInt32 w = y; // height of area to shade
+ wxInt32 yDelta = w/255; // height of one shade bend
+ if (yDelta < 1)
+ yDelta = 1;
+
+ while (y > 0)
+ {
+ y -= yDelta;
+ if (nR1 > nR2)
+ nR = nR1 - (nR1-nR2)*(w-y)/w;
+ else
+ nR = nR1 + (nR2-nR1)*(w-y)/w;
+
+ if (nG1 > nG2)
+ nG = nG1 - (nG1-nG2)*(w-y)/w;
+ else
+ nG = nG1 + (nG2-nG1)*(w-y)/w;
+
+ if (nB1 > nB2)
+ nB = nB1 - (nB1-nB2)*(w-y)/w;
+ else
+ nB = nB1 + (nB2-nB1)*(w-y)/w;
+
+ wxColour colour(nR,nG,nB);
+ SetPen(wxPen(colour, 1, wxSOLID));
+ SetBrush(wxBrush(colour));
+ if(nDirection == wxNORTH)
+ DrawRectangle(rect.GetLeft(), rect.GetTop()+y,
+ rect.GetWidth(), yDelta);
+ else //nDirection == wxSOUTH
+ DrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta+1,
+ rect.GetWidth(), yDelta);
+ }
+ }
+
+ SetPen(oldPen);
+ SetBrush(oldBrush);
+}
+
+void wxDCBase::DoGradientFillConcentric(const wxRect& rect,
+ const wxColour& initialColour,
+ const wxColour& destColour,
+ const wxPoint& circleCenter)
+{
+ //save the old pen color
+ wxColour oldPenColour = m_pen.GetColour();
+
+ wxUint8 nR1 = destColour.Red();
+ wxUint8 nG1 = destColour.Green();
+ wxUint8 nB1 = destColour.Blue();
+ wxUint8 nR2 = initialColour.Red();
+ wxUint8 nG2 = initialColour.Green();
+ wxUint8 nB2 = initialColour.Blue();
+ wxUint8 nR, nG, nB;
+
+
+ //Radius
+ wxInt32 cx = rect.GetWidth() / 2;
+ wxInt32 cy = rect.GetHeight() / 2;
+ wxInt32 nRadius;
+ if (cx < cy)
+ nRadius = cx;
+ else
+ nRadius = cy;
+
+ //Offset of circle
+ wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2);
+ wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2);
+
+ for ( wxInt32 x = 0; x < rect.GetWidth(); x++ )
+ {
+ for ( wxInt32 y = 0; y < rect.GetHeight(); y++ )
+ {
+ //get color difference
+ wxInt32 nGradient = ((nRadius -
+ (wxInt32)sqrt(
+ pow((double)(x - cx - nCircleOffX), 2) +
+ pow((double)(y - cy - nCircleOffY), 2)
+ )) * 100) / nRadius;
+
+ //normalize Gradient
+ if (nGradient < 0 )
+ nGradient = 0;
+
+ //get dest colors
+ nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100));
+ nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100));
+ nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100));
+
+ //set the pixel
+ m_pen.SetColour(wxColour(nR,nG,nB));
+ DrawPoint(wxPoint(x + rect.GetLeft(), y + rect.GetTop()));
+ }
+ }
+ //return old pen color
+ m_pen.SetColour(oldPenColour);
+}
+
/*
-Notes for wxWindows DrawEllipticArcRot(...)
+Notes for wxWidgets DrawEllipticArcRot(...)
wxDCBase::DrawEllipticArcRot(...) draws a rotated elliptic arc or an ellipse.
It uses wxDCBase::CalculateEllipticPoints(...) and wxDCBase::Rotate(...),
methods like (WinCE) wxDC::DoDrawArc(...).
CalculateEllipticPoints(...) fills a given list of wxPoints with some points
-of an elliptic arc. The algorithm is pixel-based: In every row (in flat
+of an elliptic arc. The algorithm is pixel-based: In every row (in flat
parts) or every column (in steep parts) only one pixel is calculated.
Trigonometric calculation (sin, cos, tan, atan) is only done if the
-starting angle is not equal to the ending angle. The calculation of the
+starting angle is not equal to the ending angle. The calculation of the
pixels is done using simple arithmetic only and should perform not too
bad even on devices without floating point processor. I didn't test this yet.
Rotate(...) rotates a list of point pixel-based, you will see rounding errors.
-For instance: an ellipse rotated 180 degrees is drawn
+For instance: an ellipse rotated 180 degrees is drawn
slightly different from the original.
-The points are then moved to an array and used to draw a polyline and/or polygon
-(with center added, the pie).
+The points are then moved to an array and used to draw a polyline and/or polygon
+(with center added, the pie).
The result looks quite similar to the native ellipse, only e few pixels differ.
The performance on a desktop system (Athlon 1800, WinXP) is about 7 times
An rotated ellipse outside the clipping region takes nearly the same time,
while an native ellipse outside takes nearly no time to draw.
-If you draw an arc with this new method, you will see the starting and ending angles
+If you draw an arc with this new method, you will see the starting and ending angles
are calculated properly.
If you use DrawEllipticArc(...), you will see they are only correct for circles
and not properly calculated for ellipses.
*/
#ifdef __WXWINCE__
-void wxDCBase::DoDrawEllipticArcRot( wxCoord x, wxCoord y,
- wxCoord w, wxCoord h,
+void wxDCBase::DoDrawEllipticArcRot( wxCoord x, wxCoord y,
+ wxCoord w, wxCoord h,
double sa, double ea, double angle )
{
wxList list;
list.Append( (wxObject*) new wxPoint( x+w/2, y+h/2 ) );
// copy list into array and delete list elements
- int n = list.Number();
+ int n = list.GetCount();
wxPoint *points = new wxPoint[n];
int i = 0;
- wxNode* node = 0;
- for ( node = list.First(); node; node = node->Next(), i++ )
+ wxNode* node = 0;
+ for ( node = list.GetFirst(); node; node = node->GetNext(), i++ )
{
- wxPoint *point = (wxPoint *)node->Data();
+ wxPoint *point = (wxPoint *)node->GetData();
points[i].x = point->x;
points[i].y = point->y;
delete point;
{
if( angle != 0.0 )
{
- double pi(3.1415926536);
+ double pi(M_PI);
double dSinA = -sin(angle*2.0*pi/360.0);
double dCosA = cos(angle*2.0*pi/360.0);
- for ( wxNode* node = points->First(); node; node = node->Next() )
+ for ( wxNode* node = points->GetFirst(); node; node = node->GetNext() )
{
- wxPoint* point = (wxPoint*)node->Data();
-
+ wxPoint* point = (wxPoint*)node->GetData();
+
// transform coordinates, if necessary
if( center.x ) point->x -= center.x;
if( center.y ) point->y -= center.y;
}
}
-void wxDCBase::CalculateEllipticPoints( wxList* points,
- wxCoord xStart, wxCoord yStart,
- wxCoord w, wxCoord h,
+void wxDCBase::CalculateEllipticPoints( wxList* points,
+ wxCoord xStart, wxCoord yStart,
+ wxCoord w, wxCoord h,
double sa, double ea )
{
- double pi = 3.1415926535;
+ double pi = M_PI;
double sar = 0;
double ear = 0;
int xsa = 0;
wxCoord b = h/2;
// decrement 1 pixel if ellipse is smaller than 2*a, 2*b
int decrX = 0;
- if( 2*a == w ) decrX = 1;
+ if( 2*a == w ) decrX = 1;
int decrY = 0;
- if( 2*b == h ) decrY = 1;
+ if( 2*b == h ) decrY = 1;
// center
wxCoord xCenter = xStart + a;
wxCoord yCenter = yStart + b;
ear = ea * pi / 180.0;
// correct angle circle -> ellipse
sar = atan( -a/(double)b * tan( sar ) );
- if ( sq == 1 || sq == 2 ) sar += pi;
+ if ( sq == 1 || sq == 2 ) sar += pi;
ear = atan( -a/(double)b * tan( ear ) );
if ( eq == 1 || eq == 2 ) ear += pi;
// coordinates of points
y2 = y2-y-y+1;
--y;
}
- // old y now to big: set point with old y, old x
+ // old y now to big: set point with old y, old x
if( bNewPoint && x>1)
{
int x1 = x - 1;
pointsarray[3].Append( (wxObject*) new wxPoint( xCenter + x1 - decrX, yCenter + y_old - decrY ) );
} // set point
} // calculate point
-
+
// Starting and/or ending points for the quadrants, first quadrant gets both.
pointsarray[0].Insert( (wxObject*) new wxPoint( xCenter + a - decrX, yCenter ) );
pointsarray[0].Append( (wxObject*) new wxPoint( xCenter, yCenter - b ) );
bool bForceTurn = ( sq == eq && sa > ea );
while( !bReady )
{
- for( wxNode *node = pointsarray[q].First(); node; node = node->Next() )
+ for( wxNode *node = pointsarray[q].GetFirst(); node; node = node->GetNext() )
{
// once: go to starting point in start quadrant
if( !bStarted &&
- (
- ( (wxPoint*) node->Data() )->x < xsa+1 && q <= 1
- ||
- ( (wxPoint*) node->Data() )->x > xsa-1 && q >= 2
+ (
+ ( (wxPoint*) node->GetData() )->x < xsa+1 && q <= 1
+ ||
+ ( (wxPoint*) node->GetData() )->x > xsa-1 && q >= 2
)
- )
+ )
{
bStarted = true;
}
{
if( q != eq || bForceTurn
||
- ( (wxPoint*) node->Data() )->x > xea+1 && q <= 1
- ||
- ( (wxPoint*) node->Data() )->x < xea-1 && q >= 2
+ ( (wxPoint*) node->GetData() )->x > xea+1 && q <= 1
+ ||
+ ( (wxPoint*) node->GetData() )->x < xea-1 && q >= 2
)
{
// copy point
- wxPoint* pPoint = new wxPoint( *((wxPoint*) node->Data() ) );
+ wxPoint* pPoint = new wxPoint( *((wxPoint*) node->GetData() ) );
points->Append( (wxObject*) pPoint );
}
- else if( q == eq && !bForceTurn || ( (wxPoint*) node->Data() )->x == xea)
+ else if( q == eq && !bForceTurn || ( (wxPoint*) node->GetData() )->x == xea)
{
- bReady = true;
+ bReady = true;
}
}
} // for node
// delete points
for( q = 0; q < 4; ++q )
{
- for( wxNode *node = pointsarray[q].First(); node; node = node->Next() )
+ for( wxNode *node = pointsarray[q].GetFirst(); node; node = node->GetNext() )
{
- wxPoint *p = (wxPoint *)node->Data();
+ wxPoint *p = (wxPoint *)node->GetData();
delete p;
}
- }
-
+ }
}
else
{
+ wxNode* node;
// copy whole ellipse, wxPoints will be deleted outside
- for( wxNode *node = pointsarray[0].First(); node; node = node->Next() )
+ for( node = pointsarray[0].GetFirst(); node; node = node->GetNext() )
{
- wxObject *p = node->Data();
+ wxObject *p = node->GetData();
points->Append( p );
}
- for( node = pointsarray[1].First(); node; node = node->Next() )
+ for( node = pointsarray[1].GetFirst(); node; node = node->GetNext() )
{
- wxObject *p = node->Data();
+ wxObject *p = node->GetData();
points->Append( p );
}
- for( node = pointsarray[2].First(); node; node = node->Next() )
+ for( node = pointsarray[2].GetFirst(); node; node = node->GetNext() )
{
- wxObject *p = node->Data();
+ wxObject *p = node->GetData();
points->Append( p );
}
- for( node = pointsarray[3].First(); node; node = node->Next() )
+ for( node = pointsarray[3].GetFirst(); node; node = node->GetNext() )
{
- wxObject *p = node->Data();
+ wxObject *p = node->GetData();
points->Append( p );
}
} // not iUseAngles
} // CalculateEllipticPoints
-#endif
+#endif // __WXWINCE__
+#endif // wxUSE_NEW_DC
projects / wxWidgets.git / blobdiff