1395 lines
40 KiB
C++
1395 lines
40 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/dcgraph.cpp
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// Purpose: graphics context methods common to all platforms
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// Author: Stefan Csomor
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// Modified by:
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// Created:
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// Copyright: (c) Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#if defined(__BORLANDC__)
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#pragma hdrstop
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#endif
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/dcgraph.h"
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#ifndef WX_PRECOMP
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#include "wx/icon.h"
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#include "wx/dcclient.h"
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#include "wx/dcmemory.h"
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#include "wx/math.h"
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#include "wx/geometry.h"
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#endif
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//-----------------------------------------------------------------------------
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// constants
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//-----------------------------------------------------------------------------
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static const double RAD2DEG = 180.0 / M_PI;
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//-----------------------------------------------------------------------------
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// Local functions
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//-----------------------------------------------------------------------------
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static wxCompositionMode TranslateRasterOp(wxRasterOperationMode function)
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{
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switch ( function )
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{
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case wxCOPY: // src
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// since we are supporting alpha, _OVER is closer to the intention than _SOURCE
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// since the latter would overwrite even when alpha is not set to opaque
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return wxCOMPOSITION_OVER;
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case wxOR: // src OR dst
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return wxCOMPOSITION_ADD;
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case wxNO_OP: // dst
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return wxCOMPOSITION_DEST; // ignore the source
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case wxCLEAR: // 0
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return wxCOMPOSITION_CLEAR;// clear dst
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case wxXOR: // src XOR dst
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return wxCOMPOSITION_XOR;
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case wxAND: // src AND dst
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case wxAND_INVERT: // (NOT src) AND dst
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case wxAND_REVERSE:// src AND (NOT dst)
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case wxEQUIV: // (NOT src) XOR dst
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case wxINVERT: // NOT dst
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case wxNAND: // (NOT src) OR (NOT dst)
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case wxNOR: // (NOT src) AND (NOT dst)
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case wxOR_INVERT: // (NOT src) OR dst
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case wxOR_REVERSE: // src OR (NOT dst)
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case wxSET: // 1
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case wxSRC_INVERT: // NOT src
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break;
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}
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return wxCOMPOSITION_INVALID;
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}
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//-----------------------------------------------------------------------------
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// wxDC bridge class
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//-----------------------------------------------------------------------------
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wxIMPLEMENT_DYNAMIC_CLASS(wxGCDC, wxDC);
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wxGCDC::wxGCDC(const wxWindowDC& dc) :
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wxDC( new wxGCDCImpl( this, dc ) )
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{
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}
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wxGCDC::wxGCDC( const wxMemoryDC& dc) :
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wxDC( new wxGCDCImpl( this, dc ) )
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{
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}
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#if wxUSE_PRINTING_ARCHITECTURE
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wxGCDC::wxGCDC( const wxPrinterDC& dc) :
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wxDC( new wxGCDCImpl( this, dc ) )
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{
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}
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#endif
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#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
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wxGCDC::wxGCDC(const wxEnhMetaFileDC& dc)
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: wxDC(new wxGCDCImpl(this, dc))
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{
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}
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#endif
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wxGCDC::wxGCDC(wxGraphicsContext* context) :
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wxDC( new wxGCDCImpl( this ) )
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{
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SetGraphicsContext(context);
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}
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wxGCDC::wxGCDC() :
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wxDC( new wxGCDCImpl( this ) )
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{
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}
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wxGCDC::~wxGCDC()
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{
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}
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wxIMPLEMENT_ABSTRACT_CLASS(wxGCDCImpl, wxDCImpl);
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wxGCDCImpl::wxGCDCImpl( wxDC *owner ) :
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wxDCImpl( owner )
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{
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Init(wxGraphicsContext::Create());
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}
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void wxGCDCImpl::SetGraphicsContext( wxGraphicsContext* ctx )
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{
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delete m_graphicContext;
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m_graphicContext = ctx;
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if ( m_graphicContext )
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{
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m_matrixOriginal = m_graphicContext->GetTransform();
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m_ok = true;
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// apply the stored transformations to the passed in context
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ComputeScaleAndOrigin();
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m_graphicContext->SetFont( m_font , m_textForegroundColour );
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m_graphicContext->SetPen( m_pen );
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m_graphicContext->SetBrush( m_brush);
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}
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}
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wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxWindowDC& dc ) :
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wxDCImpl( owner )
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{
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Init(wxGraphicsContext::Create(dc));
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m_window = dc.GetWindow();
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}
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wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc ) :
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wxDCImpl( owner )
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{
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Init(wxGraphicsContext::Create(dc));
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}
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#if wxUSE_PRINTING_ARCHITECTURE
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wxGCDCImpl::wxGCDCImpl( wxDC *owner, const wxPrinterDC& dc ) :
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wxDCImpl( owner )
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{
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Init(wxGraphicsContext::Create(dc));
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}
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#endif
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#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
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wxGCDCImpl::wxGCDCImpl(wxDC *owner, const wxEnhMetaFileDC& dc)
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: wxDCImpl(owner)
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{
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Init(wxGraphicsContext::Create(dc));
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}
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#endif
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wxGCDCImpl::wxGCDCImpl(wxDC* owner, int)
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: wxDCImpl(owner)
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{
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// derived class will set a context
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Init(NULL);
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}
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void wxGCDCImpl::Init(wxGraphicsContext* ctx)
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{
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m_ok = false;
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m_colour = true;
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m_mm_to_pix_x = mm2pt;
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m_mm_to_pix_y = mm2pt;
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m_pen = *wxBLACK_PEN;
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m_font = *wxNORMAL_FONT;
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m_brush = *wxWHITE_BRUSH;
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m_isClipBoxValid = false;
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m_graphicContext = NULL;
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if (ctx)
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SetGraphicsContext(ctx);
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m_logicalFunctionSupported = true;
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}
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wxGCDCImpl::~wxGCDCImpl()
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{
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delete m_graphicContext;
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}
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void wxGCDCImpl::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y,
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bool useMask )
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{
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wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid DC") );
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wxCHECK_RET( bmp.IsOk(), wxT("wxGCDC(cg)::DoDrawBitmap - invalid bitmap") );
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int w = bmp.GetScaledWidth();
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int h = bmp.GetScaledHeight();
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if ( bmp.GetDepth() == 1 )
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{
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m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
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m_graphicContext->SetBrush(m_textBackgroundColour);
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m_graphicContext->DrawRectangle( x, y, w, h );
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m_graphicContext->SetBrush(m_textForegroundColour);
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m_graphicContext->DrawBitmap( bmp, x, y, w, h );
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m_graphicContext->SetBrush( m_graphicContext->CreateBrush(m_brush));
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m_graphicContext->SetPen( m_graphicContext->CreatePen(m_pen));
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}
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else // not a monochrome bitmap, handle it normally
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{
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// make a copy in case we need to remove its mask, if we don't modify
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// it the copy is cheap as bitmaps are reference-counted
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wxBitmap bmpCopy(bmp);
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if ( !useMask && bmp.GetMask() )
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bmpCopy.SetMask(NULL);
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m_graphicContext->DrawBitmap( bmpCopy, x, y, w, h );
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}
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CalcBoundingBox(x, y);
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CalcBoundingBox(x + w, y + h);
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}
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void wxGCDCImpl::DoDrawIcon( const wxIcon &icon, wxCoord x, wxCoord y )
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{
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wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawIcon - invalid DC") );
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wxCHECK_RET( icon.IsOk(), wxT("wxGCDC(cg)::DoDrawIcon - invalid icon") );
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wxCoord w = icon.GetWidth();
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wxCoord h = icon.GetHeight();
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m_graphicContext->DrawIcon( icon , x, y, w, h );
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CalcBoundingBox(x, y);
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CalcBoundingBox(x + w, y + h);
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}
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bool wxGCDCImpl::StartDoc( const wxString& message )
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{
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return m_graphicContext->StartDoc(message);
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}
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void wxGCDCImpl::EndDoc()
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{
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m_graphicContext->EndDoc();
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}
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void wxGCDCImpl::StartPage()
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{
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m_graphicContext->StartPage();
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}
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void wxGCDCImpl::EndPage()
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{
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m_graphicContext->EndPage();
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}
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void wxGCDCImpl::Flush()
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{
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m_graphicContext->Flush();
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}
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void wxGCDCImpl::UpdateClipBox()
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{
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double x, y, w, h;
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m_graphicContext->GetClipBox(&x, &y, &w, &h);
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// We shouldn't reset m_clipping if the clipping region that we set happens
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// to be empty (e.g. because its intersection with the previous clipping
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// region was empty), but we should set it to true if we do have a valid
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// clipping region and it was false which may happen if the clipping region
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// set from the outside of wxWidgets code.
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if ( !m_clipping )
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{
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if ( w != 0. && h != 0. )
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m_clipping = true;
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}
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m_clipX1 = wxRound(x);
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m_clipY1 = wxRound(y);
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m_clipX2 = wxRound(x+w);
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m_clipY2 = wxRound(y+h);
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m_isClipBoxValid = true;
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}
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bool wxGCDCImpl::DoGetClippingRect(wxRect& rect) const
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{
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wxCHECK_MSG( IsOk(), false, wxS("wxGCDC::DoGetClippingRegion - invalid GC") );
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// Check if we should retrieve the clipping region possibly not set
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// by SetClippingRegion() but modified by application: this can
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// happen when we're associated with an existing graphics context using
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// SetGraphicsContext() or when wxGCDC logical coordinates are transformed
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// with SetDeviceOrigin(), SetLogicalOrigin(), SetUserScale(), SetLogicalScale().
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if ( !m_isClipBoxValid )
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{
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wxGCDCImpl *self = wxConstCast(this, wxGCDCImpl);
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self->UpdateClipBox();
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}
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return wxDCImpl::DoGetClippingRect(rect);
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}
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void wxGCDCImpl::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
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{
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wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoSetClippingRegion - invalid DC") );
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// Generally, renderers accept negative values of width/height
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// but for internal calculations we need to have a box definition
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// in the standard form, with (x,y) pointing to the top-left
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// corner of the box and with non-negative width and height.
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if ( w < 0 )
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{
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w = -w;
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x -= (w - 1);
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}
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if ( h < 0 )
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{
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h = -h;
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y -= (h - 1);
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}
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m_graphicContext->Clip( x, y, w, h );
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m_clipping = true;
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UpdateClipBox();
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}
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void wxGCDCImpl::DoSetDeviceClippingRegion( const wxRegion ®ion )
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{
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// region is in device coordinates
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wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoSetDeviceClippingRegion - invalid DC") );
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// Because graphics context works with logical coordinates
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// and clipping region is given in device coordinates
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// we need temporarily reset graphics context's coordinate system
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// to the initial state in which logical and device coordinate
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// systems are equivalent.
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// So, at first save current transformation parameters.
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wxGraphicsMatrix currTransform = m_graphicContext->GetTransform();
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// Reset coordinate system with identity transformation matrix
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// to make logical coordinates the same as device coordinates.
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wxGraphicsMatrix m = m_graphicContext->CreateMatrix();
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m_graphicContext->SetTransform(m);
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// Set clipping region
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m_graphicContext->Clip(region);
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// Restore original transformation settings.
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m_graphicContext->SetTransform(currTransform);
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m_clipping = true;
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UpdateClipBox();
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}
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void wxGCDCImpl::DestroyClippingRegion()
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{
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m_graphicContext->ResetClip();
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// currently the clip eg of a window extends to the area between the scrollbars
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// so we must explicitly make sure it only covers the area we want it to draw
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int width, height ;
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GetOwner()->GetSize( &width , &height ) ;
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m_graphicContext->Clip( DeviceToLogicalX(0) , DeviceToLogicalY(0) , DeviceToLogicalXRel(width), DeviceToLogicalYRel(height) );
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m_graphicContext->SetPen( m_pen );
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m_graphicContext->SetBrush( m_brush );
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wxDCImpl::DestroyClippingRegion();
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m_isClipBoxValid = false;
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}
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void wxGCDCImpl::DoGetSizeMM( int* width, int* height ) const
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{
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int w = 0, h = 0;
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GetOwner()->GetSize( &w, &h );
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if (width)
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*width = long( double(w) / (m_scaleX * m_mm_to_pix_x) );
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if (height)
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*height = long( double(h) / (m_scaleY * m_mm_to_pix_y) );
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}
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void wxGCDCImpl::SetTextForeground( const wxColour &col )
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{
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wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::SetTextForeground - invalid DC") );
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// don't set m_textForegroundColour to an invalid colour as we'd crash
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// later then (we use m_textForegroundColour.GetColor() without checking
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// in a few places)
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if ( col.IsOk() )
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{
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m_textForegroundColour = col;
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m_graphicContext->SetFont( m_font, m_textForegroundColour );
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}
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}
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void wxGCDCImpl::SetTextBackground( const wxColour &col )
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{
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wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::SetTextBackground - invalid DC") );
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m_textBackgroundColour = col;
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}
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wxSize wxGCDCImpl::GetPPI() const
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{
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if ( m_graphicContext )
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{
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wxDouble x, y;
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m_graphicContext->GetDPI(&x, &y);
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return wxSize(wxRound(x), wxRound(y));
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}
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// This is the same value that wxGraphicsContext::GetDPI() returns by
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// default.
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return wxSize(72, 72);
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}
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int wxGCDCImpl::GetDepth() const
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{
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return 32;
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}
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void wxGCDCImpl::ComputeScaleAndOrigin()
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{
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wxDCImpl::ComputeScaleAndOrigin();
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if ( m_graphicContext )
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{
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m_matrixCurrent = m_graphicContext->CreateMatrix();
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// the logical origin sets the origin to have new coordinates
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m_matrixCurrent.Translate( m_deviceOriginX - m_logicalOriginX * m_signX * m_scaleX,
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m_deviceOriginY - m_logicalOriginY * m_signY * m_scaleY);
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m_matrixCurrent.Scale( m_scaleX * m_signX, m_scaleY * m_signY );
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m_graphicContext->SetTransform( m_matrixOriginal );
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#if wxUSE_DC_TRANSFORM_MATRIX
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// Concatenate extended transform (affine) with basic transform of coordinate system.
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wxGraphicsMatrix mtxExt = m_graphicContext->CreateMatrix(m_matrixExtTransform);
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m_matrixCurrent.Concat(mtxExt);
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#endif // wxUSE_DC_TRANSFORM_MATRIX
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m_graphicContext->ConcatTransform( m_matrixCurrent );
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m_isClipBoxValid = false;
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}
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}
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void* wxGCDCImpl::GetHandle() const
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{
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void* cgctx = NULL;
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wxGraphicsContext* gc = GetGraphicsContext();
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if (gc) {
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cgctx = gc->GetNativeContext();
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}
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return cgctx;
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}
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#if wxUSE_PALETTE
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void wxGCDCImpl::SetPalette( const wxPalette& WXUNUSED(palette) )
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{
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}
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#endif
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void wxGCDCImpl::SetBackgroundMode( int mode )
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{
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m_backgroundMode = mode;
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}
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void wxGCDCImpl::SetFont( const wxFont &font )
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{
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m_font = font;
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if ( m_graphicContext )
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{
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m_graphicContext->SetFont(font, m_textForegroundColour);
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}
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}
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void wxGCDCImpl::SetPen( const wxPen &pen )
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{
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m_pen = pen;
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if ( m_graphicContext )
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{
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m_graphicContext->SetPen( m_pen );
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}
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}
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void wxGCDCImpl::SetBrush( const wxBrush &brush )
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{
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m_brush = brush;
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if ( m_graphicContext )
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{
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m_graphicContext->SetBrush( m_brush );
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}
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}
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void wxGCDCImpl::SetBackground( const wxBrush &brush )
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{
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m_backgroundBrush = brush;
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if (!m_backgroundBrush.IsOk())
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return;
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}
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void wxGCDCImpl::SetLogicalFunction( wxRasterOperationMode function )
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{
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m_logicalFunction = function;
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wxCompositionMode mode = TranslateRasterOp( function );
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m_logicalFunctionSupported = mode != wxCOMPOSITION_INVALID;
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if (m_logicalFunctionSupported)
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m_logicalFunctionSupported = m_graphicContext->SetCompositionMode(mode);
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if ( function == wxXOR )
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m_graphicContext->SetAntialiasMode(wxANTIALIAS_NONE);
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else
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m_graphicContext->SetAntialiasMode(wxANTIALIAS_DEFAULT);
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}
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// ----------------------------------------------------------------------------
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// Transform matrix
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// ----------------------------------------------------------------------------
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#if wxUSE_DC_TRANSFORM_MATRIX
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bool wxGCDCImpl::CanUseTransformMatrix() const
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{
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return true;
|
|
}
|
|
|
|
bool wxGCDCImpl::SetTransformMatrix(const wxAffineMatrix2D &matrix)
|
|
{
|
|
// Passed affine transform will be concatenated
|
|
// with current basic transform of the coordinate system.
|
|
m_matrixExtTransform = matrix;
|
|
ComputeScaleAndOrigin();
|
|
return true;
|
|
}
|
|
|
|
wxAffineMatrix2D wxGCDCImpl::GetTransformMatrix() const
|
|
{
|
|
return m_matrixExtTransform;
|
|
}
|
|
|
|
void wxGCDCImpl::ResetTransformMatrix()
|
|
{
|
|
// Reset affine transfrom matrix (extended) to identity matrix.
|
|
m_matrixExtTransform.Set(wxMatrix2D(), wxPoint2DDouble());
|
|
ComputeScaleAndOrigin();
|
|
}
|
|
|
|
#endif // wxUSE_DC_TRANSFORM_MATRIX
|
|
|
|
bool wxGCDCImpl::DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
|
|
const wxColour& WXUNUSED(col),
|
|
wxFloodFillStyle WXUNUSED(style))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
bool wxGCDCImpl::DoGetPixel( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), wxColour *WXUNUSED(col) ) const
|
|
{
|
|
// wxCHECK_MSG( 0 , false, wxT("wxGCDC(cg)::DoGetPixel - not implemented") );
|
|
return false;
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawLine( wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2 )
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawLine - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
m_graphicContext->StrokeLine(x1,y1,x2,y2);
|
|
|
|
CalcBoundingBox(x1, y1);
|
|
CalcBoundingBox(x2, y2);
|
|
}
|
|
|
|
void wxGCDCImpl::DoCrossHair( wxCoord x, wxCoord y )
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoCrossHair - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
int w = 0, h = 0;
|
|
|
|
GetOwner()->GetSize( &w, &h );
|
|
|
|
m_graphicContext->StrokeLine(0,y,w,y);
|
|
m_graphicContext->StrokeLine(x,0,x,h);
|
|
|
|
CalcBoundingBox(0, 0);
|
|
CalcBoundingBox(w, h);
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawArc( wxCoord x1, wxCoord y1,
|
|
wxCoord x2, wxCoord y2,
|
|
wxCoord xc, wxCoord yc )
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawArc - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
double dx = x1 - xc;
|
|
double dy = y1 - yc;
|
|
double radius = sqrt((double)(dx * dx + dy * dy));
|
|
wxCoord rad = (wxCoord)radius;
|
|
double sa, ea;
|
|
if (x1 == x2 && y1 == y2)
|
|
{
|
|
sa = 0.0;
|
|
ea = 360.0;
|
|
}
|
|
else if (radius == 0.0)
|
|
{
|
|
sa = ea = 0.0;
|
|
}
|
|
else
|
|
{
|
|
sa = (x1 - xc == 0) ?
|
|
(y1 - yc < 0) ? 90.0 : -90.0 :
|
|
-atan2(double(y1 - yc), double(x1 - xc)) * RAD2DEG;
|
|
ea = (x2 - xc == 0) ?
|
|
(y2 - yc < 0) ? 90.0 : -90.0 :
|
|
-atan2(double(y2 - yc), double(x2 - xc)) * RAD2DEG;
|
|
}
|
|
|
|
bool fill = m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT;
|
|
|
|
wxGraphicsPath path = m_graphicContext->CreatePath();
|
|
if ( fill && ((x1!=x2)||(y1!=y2)) )
|
|
path.MoveToPoint( xc, yc );
|
|
// since these angles (ea,sa) are measured counter-clockwise, we invert them to
|
|
// get clockwise angles
|
|
path.AddArc( xc, yc , rad, wxDegToRad(-sa), wxDegToRad(-ea), false );
|
|
if ( fill && ((x1!=x2)||(y1!=y2)) )
|
|
path.AddLineToPoint( xc, yc );
|
|
m_graphicContext->DrawPath(path);
|
|
|
|
wxRect2DDouble box = path.GetBox();
|
|
CalcBoundingBox(wxRound(box.m_x), wxRound(box.m_y));
|
|
CalcBoundingBox(wxRound(box.m_x + box.m_width),
|
|
wxRound(box.m_y + box.m_height));
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h,
|
|
double sa, double ea )
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawEllipticArc - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
wxCoord dx = x + w / 2.0;
|
|
wxCoord dy = y + h / 2.0;
|
|
wxDouble factor = ((wxDouble) w) / h;
|
|
m_graphicContext->PushState();
|
|
m_graphicContext->Translate(dx, dy);
|
|
m_graphicContext->Scale(factor, 1.0);
|
|
wxGraphicsPath path = m_graphicContext->CreatePath();
|
|
|
|
// If end angle equals start angle we want draw a full ellipse.
|
|
if (ea == sa)
|
|
{
|
|
ea += 360.0;
|
|
}
|
|
// since these angles (ea,sa) are measured counter-clockwise, we invert them to
|
|
// get clockwise angles
|
|
if ( m_brush.GetStyle() != wxBRUSHSTYLE_TRANSPARENT )
|
|
{
|
|
path.MoveToPoint( 0, 0 );
|
|
path.AddArc( 0, 0, h/2.0, wxDegToRad(-sa), wxDegToRad(-ea), false );
|
|
path.AddLineToPoint( 0, 0 );
|
|
m_graphicContext->FillPath( path );
|
|
|
|
path = m_graphicContext->CreatePath();
|
|
path.AddArc( 0, 0, h/2.0, wxDegToRad(-sa), wxDegToRad(-ea), false );
|
|
m_graphicContext->StrokePath( path );
|
|
}
|
|
else
|
|
{
|
|
path.AddArc( 0, 0, h/2.0, wxDegToRad(-sa), wxDegToRad(-ea), false );
|
|
m_graphicContext->DrawPath( path );
|
|
}
|
|
|
|
wxRect2DDouble box = path.GetBox();
|
|
// apply the transformation to the box
|
|
box.m_x *= factor;
|
|
box.m_width *= factor;
|
|
box.m_x += dx;
|
|
box.m_y += dy;
|
|
|
|
CalcBoundingBox(wxRound(box.m_x), wxRound(box.m_y));
|
|
CalcBoundingBox(wxRound(box.m_x + box.m_width),
|
|
wxRound(box.m_y + box.m_height));
|
|
|
|
m_graphicContext->PopState();
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawPoint( wxCoord x, wxCoord y )
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawPoint - invalid DC") );
|
|
|
|
if (!m_logicalFunctionSupported)
|
|
return;
|
|
|
|
#if defined(__WXMSW__) && wxUSE_GRAPHICS_GDIPLUS
|
|
// single point path does not work with GDI+
|
|
if (m_graphicContext->GetRenderer() == wxGraphicsRenderer::GetGDIPlusRenderer())
|
|
{
|
|
const double dx = 0.25 / m_scaleX;
|
|
const double dy = 0.25 / m_scaleY;
|
|
m_graphicContext->StrokeLine(x - dx, y - dy, x + dx, y + dy);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
#ifdef __WXOSX__
|
|
m_graphicContext->StrokeLine(x, y, x, y);
|
|
#else
|
|
wxGraphicsPath path(m_graphicContext->CreatePath());
|
|
path.MoveToPoint(x, y);
|
|
path.CloseSubpath();
|
|
m_graphicContext->StrokePath(path);
|
|
#endif
|
|
}
|
|
|
|
CalcBoundingBox(x, y);
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawLines(int n, const wxPoint points[],
|
|
wxCoord xoffset, wxCoord yoffset)
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawLines - invalid DC") );
|
|
wxASSERT_MSG( n > 0, wxT("wxGCDC(cg)::DoDrawLines - number of points too small") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
int minX = points[0].x;
|
|
int minY = points[0].y;
|
|
int maxX = minX;
|
|
int maxY = minY;
|
|
|
|
wxPoint2DDouble* pointsD = new wxPoint2DDouble[n];
|
|
for( int i = 0; i < n; ++i)
|
|
{
|
|
wxPoint p = points[i];
|
|
pointsD[i].m_x = p.x + xoffset;
|
|
pointsD[i].m_y = p.y + yoffset;
|
|
|
|
if (p.x < minX) minX = p.x;
|
|
else if (p.x > maxX) maxX = p.x;
|
|
if (p.y < minY) minY = p.y;
|
|
else if (p.y > maxY) maxY = p.y;
|
|
}
|
|
|
|
m_graphicContext->StrokeLines( n , pointsD);
|
|
delete[] pointsD;
|
|
|
|
CalcBoundingBox(minX + xoffset, minY + yoffset);
|
|
CalcBoundingBox(maxX + xoffset, maxY + yoffset);
|
|
}
|
|
|
|
#if wxUSE_SPLINES
|
|
void wxGCDCImpl::DoDrawSpline(const wxPointList *points)
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawSpline - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
wxGraphicsPath path = m_graphicContext->CreatePath();
|
|
|
|
wxPointList::compatibility_iterator node = points->GetFirst();
|
|
if ( !node )
|
|
// empty list
|
|
return;
|
|
|
|
const wxPoint *p = node->GetData();
|
|
|
|
wxCoord x1 = p->x;
|
|
wxCoord y1 = p->y;
|
|
|
|
node = node->GetNext();
|
|
p = node->GetData();
|
|
|
|
wxCoord x2 = p->x;
|
|
wxCoord y2 = p->y;
|
|
wxCoord cx1 = ( x1 + x2 ) / 2;
|
|
wxCoord cy1 = ( y1 + y2 ) / 2;
|
|
|
|
path.MoveToPoint( x1 , y1 );
|
|
path.AddLineToPoint( cx1 , cy1 );
|
|
#if !wxUSE_STD_CONTAINERS
|
|
|
|
while ((node = node->GetNext()) != NULL)
|
|
#else
|
|
|
|
while ((node = node->GetNext()))
|
|
#endif // !wxUSE_STD_CONTAINERS
|
|
|
|
{
|
|
p = node->GetData();
|
|
x1 = x2;
|
|
y1 = y2;
|
|
x2 = p->x;
|
|
y2 = p->y;
|
|
wxCoord cx4 = (x1 + x2) / 2;
|
|
wxCoord cy4 = (y1 + y2) / 2;
|
|
|
|
path.AddQuadCurveToPoint(x1 , y1 ,cx4 , cy4 );
|
|
|
|
cx1 = cx4;
|
|
cy1 = cy4;
|
|
}
|
|
|
|
path.AddLineToPoint( x2 , y2 );
|
|
|
|
m_graphicContext->StrokePath( path );
|
|
|
|
wxRect2DDouble box = path.GetBox();
|
|
CalcBoundingBox(wxRound(box.m_x), wxRound(box.m_y));
|
|
CalcBoundingBox(wxRound(box.m_x + box.m_width),
|
|
wxRound(box.m_y + box.m_height));
|
|
}
|
|
#endif // wxUSE_SPLINES
|
|
|
|
void wxGCDCImpl::DoDrawPolygon( int n, const wxPoint points[],
|
|
wxCoord xoffset, wxCoord yoffset,
|
|
wxPolygonFillMode fillStyle )
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawPolygon - invalid DC") );
|
|
|
|
if ( n <= 0 ||
|
|
(m_brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT &&
|
|
m_pen.GetStyle() == wxPENSTYLE_TRANSPARENT) )
|
|
return;
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
bool closeIt = false;
|
|
if (points[n-1] != points[0])
|
|
closeIt = true;
|
|
|
|
int minX = points[0].x;
|
|
int minY = points[0].y;
|
|
int maxX = minX;
|
|
int maxY = minY;
|
|
|
|
wxPoint2DDouble* pointsD = new wxPoint2DDouble[n+(closeIt?1:0)];
|
|
for( int i = 0; i < n; ++i)
|
|
{
|
|
wxPoint p = points[i];
|
|
pointsD[i].m_x = p.x + xoffset;
|
|
pointsD[i].m_y = p.y + yoffset;
|
|
|
|
if (p.x < minX) minX = p.x;
|
|
else if (p.x > maxX) maxX = p.x;
|
|
if (p.y < minY) minY = p.y;
|
|
else if (p.y > maxY) maxY = p.y;
|
|
}
|
|
if ( closeIt )
|
|
pointsD[n] = pointsD[0];
|
|
|
|
m_graphicContext->DrawLines( n+(closeIt?1:0) , pointsD, fillStyle);
|
|
delete[] pointsD;
|
|
|
|
CalcBoundingBox(minX + xoffset, minY + yoffset);
|
|
CalcBoundingBox(maxX + xoffset, maxY + yoffset);
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawPolyPolygon(int n,
|
|
const int count[],
|
|
const wxPoint points[],
|
|
wxCoord xoffset,
|
|
wxCoord yoffset,
|
|
wxPolygonFillMode fillStyle)
|
|
{
|
|
wxASSERT(n > 1);
|
|
wxGraphicsPath path = m_graphicContext->CreatePath();
|
|
|
|
int i = 0;
|
|
for ( int j = 0; j < n; ++j)
|
|
{
|
|
wxPoint start = points[i];
|
|
path.MoveToPoint( start.x+ xoffset, start.y+ yoffset);
|
|
++i;
|
|
int l = count[j];
|
|
for ( int k = 1; k < l; ++k)
|
|
{
|
|
path.AddLineToPoint( points[i].x+ xoffset, points[i].y+ yoffset);
|
|
++i;
|
|
}
|
|
// close the polygon
|
|
if ( start != points[i-1])
|
|
path.AddLineToPoint( start.x+ xoffset, start.y+ yoffset);
|
|
}
|
|
m_graphicContext->DrawPath( path , fillStyle);
|
|
|
|
wxRect2DDouble box = path.GetBox();
|
|
CalcBoundingBox(wxRound(box.m_x), wxRound(box.m_y));
|
|
CalcBoundingBox(wxRound(box.m_x + box.m_width),
|
|
wxRound(box.m_y + box.m_height));
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawRectangle - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
// CMB: draw nothing if transformed w or h is 0
|
|
if (w == 0 || h == 0)
|
|
return;
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + w, y + h);
|
|
|
|
if (m_pen.IsOk() && m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT && m_pen.GetWidth() > 0)
|
|
{
|
|
// outline is one pixel larger than what raster-based wxDC implementations draw
|
|
w -= 1;
|
|
h -= 1;
|
|
}
|
|
m_graphicContext->DrawRectangle(x,y,w,h);
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y,
|
|
wxCoord w, wxCoord h,
|
|
double radius)
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawRoundedRectangle - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
if (radius < 0.0)
|
|
radius = - radius * ((w < h) ? w : h);
|
|
|
|
// CMB: draw nothing if transformed w or h is 0
|
|
if (w == 0 || h == 0)
|
|
return;
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + w, y + h);
|
|
|
|
if (m_pen.IsOk() && m_pen.GetStyle() != wxPENSTYLE_TRANSPARENT && m_pen.GetWidth() > 0)
|
|
{
|
|
// outline is one pixel larger than what raster-based wxDC implementations draw
|
|
w -= 1;
|
|
h -= 1;
|
|
}
|
|
m_graphicContext->DrawRoundedRectangle( x,y,w,h,radius);
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawEllipse - invalid DC") );
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + w, y + h);
|
|
|
|
m_graphicContext->DrawEllipse(x,y,w,h);
|
|
}
|
|
|
|
bool wxGCDCImpl::CanDrawBitmap() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
bool wxGCDCImpl::DoBlit(
|
|
wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
|
|
wxDC *source, wxCoord xsrc, wxCoord ysrc,
|
|
wxRasterOperationMode logical_func , bool useMask,
|
|
wxCoord xsrcMask, wxCoord ysrcMask )
|
|
{
|
|
return DoStretchBlit( xdest, ydest, width, height,
|
|
source, xsrc, ysrc, width, height, logical_func, useMask,
|
|
xsrcMask,ysrcMask );
|
|
}
|
|
|
|
bool wxGCDCImpl::DoStretchBlit(
|
|
wxCoord xdest, wxCoord ydest, wxCoord dstWidth, wxCoord dstHeight,
|
|
wxDC *source, wxCoord xsrc, wxCoord ysrc, wxCoord srcWidth, wxCoord srcHeight,
|
|
wxRasterOperationMode logical_func , bool useMask,
|
|
wxCoord xsrcMask, wxCoord ysrcMask )
|
|
{
|
|
wxCHECK_MSG( IsOk(), false, wxT("wxGCDC(cg)::DoStretchBlit - invalid DC") );
|
|
wxCHECK_MSG( source->IsOk(), false, wxT("wxGCDC(cg)::DoStretchBlit - invalid source DC") );
|
|
|
|
if ( logical_func == wxNO_OP )
|
|
return true;
|
|
|
|
wxCompositionMode mode = TranslateRasterOp(logical_func);
|
|
if ( mode == wxCOMPOSITION_INVALID )
|
|
{
|
|
wxFAIL_MSG( wxT("Blitting is not supported with this logical operation.") );
|
|
return false;
|
|
}
|
|
|
|
wxRect subrect(source->LogicalToDeviceX(xsrc),
|
|
source->LogicalToDeviceY(ysrc),
|
|
source->LogicalToDeviceXRel(srcWidth),
|
|
source->LogicalToDeviceYRel(srcHeight));
|
|
const wxRect subrectOrig = subrect;
|
|
// clip the subrect down to the size of the source DC
|
|
wxRect clip;
|
|
source->GetSize(&clip.width, &clip.height);
|
|
subrect.Intersect(clip);
|
|
if (subrect.width == 0)
|
|
return true;
|
|
|
|
bool retval = true;
|
|
|
|
wxCompositionMode formerMode = m_graphicContext->GetCompositionMode();
|
|
if (m_graphicContext->SetCompositionMode(mode))
|
|
{
|
|
wxAntialiasMode formerAa = m_graphicContext->GetAntialiasMode();
|
|
if (mode == wxCOMPOSITION_XOR)
|
|
{
|
|
m_graphicContext->SetAntialiasMode(wxANTIALIAS_NONE);
|
|
}
|
|
|
|
if (xsrcMask == -1 && ysrcMask == -1)
|
|
{
|
|
xsrcMask = xsrc;
|
|
ysrcMask = ysrc;
|
|
}
|
|
|
|
wxBitmap blit = source->GetAsBitmap( &subrect );
|
|
|
|
if ( blit.IsOk() )
|
|
{
|
|
if ( !useMask && blit.GetMask() )
|
|
blit.SetMask(NULL);
|
|
|
|
double x = xdest;
|
|
double y = ydest;
|
|
double w = dstWidth;
|
|
double h = dstHeight;
|
|
// adjust dest rect if source rect is clipped
|
|
if (subrect.width != subrectOrig.width || subrect.height != subrectOrig.height)
|
|
{
|
|
x += (subrect.x - subrectOrig.x) / double(subrectOrig.width) * dstWidth;
|
|
y += (subrect.y - subrectOrig.y) / double(subrectOrig.height) * dstHeight;
|
|
w *= double(subrect.width) / subrectOrig.width;
|
|
h *= double(subrect.height) / subrectOrig.height;
|
|
}
|
|
m_graphicContext->DrawBitmap(blit, x, y, w, h);
|
|
}
|
|
else
|
|
{
|
|
wxFAIL_MSG( wxT("Cannot Blit. Unable to get contents of DC as bitmap.") );
|
|
retval = false;
|
|
}
|
|
|
|
if (mode == wxCOMPOSITION_XOR)
|
|
{
|
|
m_graphicContext->SetAntialiasMode(formerAa);
|
|
}
|
|
}
|
|
// reset composition
|
|
m_graphicContext->SetCompositionMode(formerMode);
|
|
|
|
CalcBoundingBox(xdest, ydest);
|
|
CalcBoundingBox(xdest + dstWidth, ydest + dstHeight);
|
|
|
|
return retval;
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
|
|
double angle)
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawRotatedText - invalid DC") );
|
|
|
|
if ( text.empty() )
|
|
return;
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
// we test that we have some font because otherwise we should still use the
|
|
// "else" part below to avoid that DrawRotatedText(angle = 180) and
|
|
// DrawRotatedText(angle = 0) use different fonts (we can't use the default
|
|
// font for drawing rotated fonts unfortunately)
|
|
if ( (angle == 0.0) && m_font.IsOk() )
|
|
{
|
|
DoDrawText(text, x, y);
|
|
|
|
// Bounding box already updated by DoDrawText(), no need to do it again.
|
|
return;
|
|
}
|
|
|
|
// Get extent of whole text.
|
|
wxCoord w, h, heightLine;
|
|
GetOwner()->GetMultiLineTextExtent(text, &w, &h, &heightLine);
|
|
|
|
// Compute the shift for the origin of the next line.
|
|
const double rad = wxDegToRad(angle);
|
|
const double dx = heightLine * sin(rad);
|
|
const double dy = heightLine * cos(rad);
|
|
|
|
// Draw all text line by line
|
|
const wxArrayString lines = wxSplit(text, '\n', '\0');
|
|
for ( size_t lineNum = 0; lineNum < lines.size(); lineNum++ )
|
|
{
|
|
// Calculate origin for each line to avoid accumulation of
|
|
// rounding errors.
|
|
if ( m_backgroundMode == wxTRANSPARENT )
|
|
m_graphicContext->DrawText( lines[lineNum], x + wxRound(lineNum*dx), y + wxRound(lineNum*dy), wxDegToRad(angle ));
|
|
else
|
|
m_graphicContext->DrawText( lines[lineNum], x + wxRound(lineNum*dx), y + wxRound(lineNum*dy), wxDegToRad(angle ), m_graphicContext->CreateBrush(m_textBackgroundColour) );
|
|
}
|
|
|
|
// call the bounding box by adding all four vertices of the rectangle
|
|
// containing the text to it (simpler and probably not slower than
|
|
// determining which of them is really topmost/leftmost/...)
|
|
|
|
// "upper left" and "upper right"
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));
|
|
|
|
// "bottom left" and "bottom right"
|
|
x += (wxCoord)(h*sin(rad));
|
|
y += (wxCoord)(h*cos(rad));
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + wxCoord(w*cos(rad)), y - wxCoord(w*sin(rad)));
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawText(const wxString& str, wxCoord x, wxCoord y)
|
|
{
|
|
// For compatibility with other ports (notably wxGTK) and because it's
|
|
// genuinely useful, we allow passing multiline strings to DrawText().
|
|
// However there is no native OSX function to draw them directly so we
|
|
// instead reuse the generic DrawLabel() method to render them. Of course,
|
|
// DrawLabel() itself will call back to us but with single line strings
|
|
// only so there won't be any infinite recursion here.
|
|
if ( str.find('\n') != wxString::npos )
|
|
{
|
|
GetOwner()->DrawLabel(str, wxRect(x, y, 0, 0));
|
|
return;
|
|
}
|
|
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoDrawText - invalid DC") );
|
|
|
|
if ( str.empty() )
|
|
return;
|
|
|
|
if ( !m_logicalFunctionSupported )
|
|
return;
|
|
|
|
if ( m_backgroundMode == wxTRANSPARENT )
|
|
m_graphicContext->DrawText( str, x ,y);
|
|
else
|
|
m_graphicContext->DrawText( str, x ,y , m_graphicContext->CreateBrush(m_textBackgroundColour) );
|
|
|
|
wxCoord w, h;
|
|
GetOwner()->GetTextExtent(str, &w, &h);
|
|
CalcBoundingBox(x, y);
|
|
CalcBoundingBox(x + w, y + h);
|
|
}
|
|
|
|
bool wxGCDCImpl::CanGetTextExtent() const
|
|
{
|
|
wxCHECK_MSG( IsOk(), false, wxT("wxGCDC(cg)::CanGetTextExtent - invalid DC") );
|
|
|
|
return true;
|
|
}
|
|
|
|
void wxGCDCImpl::DoGetTextExtent( const wxString &str, wxCoord *width, wxCoord *height,
|
|
wxCoord *descent, wxCoord *externalLeading ,
|
|
const wxFont *theFont ) const
|
|
{
|
|
wxCHECK_RET( m_graphicContext, wxT("wxGCDC(cg)::DoGetTextExtent - invalid DC") );
|
|
|
|
if ( theFont )
|
|
{
|
|
m_graphicContext->SetFont( *theFont, m_textForegroundColour );
|
|
}
|
|
|
|
wxDouble h , d , e , w;
|
|
|
|
m_graphicContext->GetTextExtent( str, &w, &h, &d, &e );
|
|
|
|
if ( height )
|
|
*height = (wxCoord)(h+0.5);
|
|
if ( descent )
|
|
*descent = (wxCoord)(d+0.5);
|
|
if ( externalLeading )
|
|
*externalLeading = (wxCoord)(e+0.5);
|
|
if ( width )
|
|
*width = (wxCoord)(w+0.5);
|
|
|
|
if ( theFont )
|
|
{
|
|
m_graphicContext->SetFont( m_font, m_textForegroundColour );
|
|
}
|
|
}
|
|
|
|
bool wxGCDCImpl::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
|
|
{
|
|
wxCHECK_MSG( m_graphicContext, false, wxT("wxGCDC(cg)::DoGetPartialTextExtents - invalid DC") );
|
|
widths.Clear();
|
|
widths.Add(0,text.Length());
|
|
if ( text.IsEmpty() )
|
|
return true;
|
|
|
|
wxArrayDouble widthsD;
|
|
|
|
m_graphicContext->GetPartialTextExtents( text, widthsD );
|
|
for ( size_t i = 0; i < widths.GetCount(); ++i )
|
|
widths[i] = (wxCoord)(widthsD[i] + 0.5);
|
|
|
|
return true;
|
|
}
|
|
|
|
wxCoord wxGCDCImpl::GetCharWidth(void) const
|
|
{
|
|
wxCoord width = 0;
|
|
DoGetTextExtent( wxT("g") , &width , NULL , NULL , NULL , NULL );
|
|
|
|
return width;
|
|
}
|
|
|
|
wxCoord wxGCDCImpl::GetCharHeight(void) const
|
|
{
|
|
wxCoord height = 0;
|
|
DoGetTextExtent( wxT("g") , NULL , &height , NULL , NULL , NULL );
|
|
|
|
return height;
|
|
}
|
|
|
|
void wxGCDCImpl::Clear(void)
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::Clear - invalid DC") );
|
|
|
|
if ( m_backgroundBrush.IsOk() )
|
|
{
|
|
m_graphicContext->SetBrush( m_backgroundBrush );
|
|
wxPen p = *wxTRANSPARENT_PEN;
|
|
m_graphicContext->SetPen( p );
|
|
wxCompositionMode formerMode = m_graphicContext->GetCompositionMode();
|
|
m_graphicContext->SetCompositionMode(wxCOMPOSITION_SOURCE);
|
|
|
|
double x, y, w, h;
|
|
m_graphicContext->GetClipBox(&x, &y, &w, &h);
|
|
m_graphicContext->DrawRectangle(x, y, w, h);
|
|
|
|
m_graphicContext->SetCompositionMode(formerMode);
|
|
m_graphicContext->SetPen( m_pen );
|
|
m_graphicContext->SetBrush( m_brush );
|
|
}
|
|
else
|
|
{
|
|
double x, y, w, h;
|
|
m_graphicContext->GetClipBox(&x, &y, &w, &h);
|
|
m_graphicContext->ClearRectangle(x, y, w, h);
|
|
}
|
|
}
|
|
|
|
void wxGCDCImpl::DoGetSize(int *width, int *height) const
|
|
{
|
|
wxCHECK_RET( IsOk(), wxT("wxGCDC(cg)::DoGetSize - invalid DC") );
|
|
wxDouble w,h;
|
|
m_graphicContext->GetSize( &w, &h );
|
|
if ( height )
|
|
*height = (int) (h+0.5);
|
|
if ( width )
|
|
*width = (int) (w+0.5);
|
|
}
|
|
|
|
void wxGCDCImpl::DoGradientFillLinear(const wxRect& rect,
|
|
const wxColour& initialColour,
|
|
const wxColour& destColour,
|
|
wxDirection nDirection )
|
|
{
|
|
wxPoint start;
|
|
wxPoint end;
|
|
switch( nDirection)
|
|
{
|
|
case wxWEST :
|
|
start = rect.GetRightBottom();
|
|
start.x++;
|
|
end = rect.GetLeftBottom();
|
|
break;
|
|
case wxEAST :
|
|
start = rect.GetLeftBottom();
|
|
end = rect.GetRightBottom();
|
|
end.x++;
|
|
break;
|
|
case wxNORTH :
|
|
start = rect.GetLeftBottom();
|
|
start.y++;
|
|
end = rect.GetLeftTop();
|
|
break;
|
|
case wxSOUTH :
|
|
start = rect.GetLeftTop();
|
|
end = rect.GetLeftBottom();
|
|
end.y++;
|
|
break;
|
|
default :
|
|
break;
|
|
}
|
|
|
|
if (rect.width == 0 || rect.height == 0)
|
|
return;
|
|
|
|
m_graphicContext->SetBrush( m_graphicContext->CreateLinearGradientBrush(
|
|
start.x,start.y,end.x,end.y, initialColour, destColour));
|
|
m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
|
|
m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
|
|
m_graphicContext->SetPen(m_pen);
|
|
m_graphicContext->SetBrush(m_brush);
|
|
|
|
CalcBoundingBox(rect.x, rect.y);
|
|
CalcBoundingBox(rect.x + rect.width, rect.y + rect.height);
|
|
}
|
|
|
|
void wxGCDCImpl::DoGradientFillConcentric(const wxRect& rect,
|
|
const wxColour& initialColour,
|
|
const wxColour& destColour,
|
|
const wxPoint& circleCenter)
|
|
{
|
|
//Radius
|
|
wxInt32 cx = rect.GetWidth() / 2;
|
|
wxInt32 cy = rect.GetHeight() / 2;
|
|
wxInt32 nRadius;
|
|
if (cx < cy)
|
|
nRadius = cx;
|
|
else
|
|
nRadius = cy;
|
|
|
|
// make sure the background is filled (todo move into specific platform implementation ?)
|
|
m_graphicContext->SetPen(*wxTRANSPARENT_PEN);
|
|
m_graphicContext->SetBrush( wxBrush( destColour) );
|
|
m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
|
|
|
|
m_graphicContext->SetBrush( m_graphicContext->CreateRadialGradientBrush(
|
|
rect.x+circleCenter.x,rect.y+circleCenter.y,
|
|
rect.x+circleCenter.x,rect.y+circleCenter.y,
|
|
nRadius,initialColour,destColour));
|
|
|
|
m_graphicContext->DrawRectangle(rect.x,rect.y,rect.width,rect.height);
|
|
m_graphicContext->SetPen(m_pen);
|
|
m_graphicContext->SetBrush(m_brush);
|
|
|
|
CalcBoundingBox(rect.x, rect.y);
|
|
CalcBoundingBox(rect.x + rect.width, rect.y + rect.height);
|
|
}
|
|
|
|
void wxGCDCImpl::DoDrawCheckMark(wxCoord x, wxCoord y,
|
|
wxCoord width, wxCoord height)
|
|
{
|
|
wxDCImpl::DoDrawCheckMark(x,y,width,height);
|
|
}
|
|
|
|
#ifdef __WXMSW__
|
|
wxRect wxGCDCImpl::MSWApplyGDIPlusTransform(const wxRect& r) const
|
|
{
|
|
wxCHECK_MSG( IsOk(), r, wxS("Invalid wxGCDC") );
|
|
|
|
double x = 0,
|
|
y = 0;
|
|
m_graphicContext->GetTransform().TransformPoint(&x, &y);
|
|
|
|
wxRect rect(r);
|
|
rect.Offset(x, y);
|
|
|
|
return rect;
|
|
}
|
|
#endif // __WXMSW__
|
|
|
|
#endif // wxUSE_GRAPHICS_CONTEXT
|