04ef50df3a
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10717 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1638 lines
47 KiB
C++
1638 lines
47 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: dc.cpp
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// Purpose: wxDC class
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// Author: Julian Smart
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// Modified by:
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// Created: 01/02/97
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart and Markus Holzem
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ===========================================================================
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// declarations
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// headers
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// ---------------------------------------------------------------------------
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#ifdef __GNUG__
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#pragma implementation "dc.h"
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#endif
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/window.h"
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#include "wx/dc.h"
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#include "wx/utils.h"
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#include "wx/dialog.h"
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#include "wx/app.h"
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#include "wx/bitmap.h"
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#include "wx/dcmemory.h"
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#include "wx/log.h"
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#include "wx/icon.h"
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#endif
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#include "wx/settings.h"
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#include "wx/dcprint.h"
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#include <string.h>
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#include <math.h>
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#include "wx/msw/private.h" // needs to be before #include <commdlg.h>
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#if wxUSE_COMMON_DIALOGS
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#include <commdlg.h>
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#endif
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#ifndef __WIN32__
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#include <print.h>
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#endif
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IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase)
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// ---------------------------------------------------------------------------
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// constants
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// ---------------------------------------------------------------------------
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static const int VIEWPORT_EXTENT = 1000;
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static const int MM_POINTS = 9;
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static const int MM_METRIC = 10;
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// usually this is defined in math.h
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#ifndef M_PI
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static const double M_PI = 3.14159265358979323846;
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#endif // M_PI
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// ROPs which don't have standard names (see "Ternary Raster Operations" in the
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// MSDN docs for how this and other numbers in wxDC::Blit() are obtained)
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#define DSTCOPY 0x00AA0029 // a.k.a. NOP operation
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// ---------------------------------------------------------------------------
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// private functions
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// ---------------------------------------------------------------------------
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// convert degrees to radians
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static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// instead of duplicating the same code which sets and then restores text
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// colours in each wxDC method working with wxSTIPPLE_MASK_OPAQUE brushes,
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// encapsulate this in a small helper class
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// wxColourChanger: changes the text colours in the ctor if required and
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// restores them in the dtor
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class wxColourChanger
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{
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public:
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wxColourChanger(wxDC& dc);
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~wxColourChanger();
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private:
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wxDC& m_dc;
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COLORREF m_colFgOld, m_colBgOld;
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bool m_changed;
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};
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// ===========================================================================
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// implementation
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// ===========================================================================
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// ----------------------------------------------------------------------------
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// wxColourChanger
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// ----------------------------------------------------------------------------
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wxColourChanger::wxColourChanger(wxDC& dc) : m_dc(dc)
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{
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if ( dc.GetBrush().GetStyle() == wxSTIPPLE_MASK_OPAQUE )
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{
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HDC hdc = GetHdcOf(dc);
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m_colFgOld = ::GetTextColor(hdc);
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m_colBgOld = ::GetBkColor(hdc);
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// note that Windows convention is opposite to wxWindows one, this is
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// why text colour becomes the background one and vice versa
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const wxColour& colFg = dc.GetTextForeground();
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if ( colFg.Ok() )
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{
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::SetBkColor(hdc, colFg.GetPixel());
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}
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const wxColour& colBg = dc.GetTextBackground();
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if ( colBg.Ok() )
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{
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::SetTextColor(hdc, colBg.GetPixel());
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}
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SetBkMode(hdc,
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dc.GetBackgroundMode() == wxTRANSPARENT ? TRANSPARENT
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: OPAQUE);
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// flag which telsl us to undo changes in the dtor
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m_changed = TRUE;
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}
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else
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{
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// nothing done, nothing to undo
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m_changed = FALSE;
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}
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}
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wxColourChanger::~wxColourChanger()
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{
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if ( m_changed )
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{
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// restore the colours we changed
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HDC hdc = GetHdcOf(m_dc);
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::SetBkMode(hdc, TRANSPARENT);
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::SetTextColor(hdc, m_colFgOld);
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::SetBkColor(hdc, m_colBgOld);
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}
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}
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// ---------------------------------------------------------------------------
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// wxDC
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// ---------------------------------------------------------------------------
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// Default constructor
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wxDC::wxDC()
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{
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m_canvas = NULL;
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m_oldBitmap = 0;
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m_oldPen = 0;
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m_oldBrush = 0;
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m_oldFont = 0;
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m_oldPalette = 0;
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m_bOwnsDC = FALSE;
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m_hDC = 0;
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m_windowExtX = VIEWPORT_EXTENT;
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m_windowExtY = VIEWPORT_EXTENT;
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}
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wxDC::~wxDC()
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{
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if ( m_hDC != 0 )
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{
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SelectOldObjects(m_hDC);
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// if we own the HDC, we delete it, otherwise we just release it
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if ( m_bOwnsDC )
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{
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::DeleteDC(GetHdc());
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}
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else // we don't own our HDC
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{
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if (m_canvas)
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{
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::ReleaseDC(GetHwndOf(m_canvas), GetHdc());
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}
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else
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{
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// Must have been a wxScreenDC
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::ReleaseDC((HWND) NULL, GetHdc());
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}
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}
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}
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}
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// This will select current objects out of the DC,
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// which is what you have to do before deleting the
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// DC.
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void wxDC::SelectOldObjects(WXHDC dc)
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{
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if (dc)
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{
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if (m_oldBitmap)
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{
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::SelectObject((HDC) dc, (HBITMAP) m_oldBitmap);
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if (m_selectedBitmap.Ok())
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{
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m_selectedBitmap.SetSelectedInto(NULL);
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}
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}
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m_oldBitmap = 0;
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if (m_oldPen)
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{
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::SelectObject((HDC) dc, (HPEN) m_oldPen);
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}
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m_oldPen = 0;
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if (m_oldBrush)
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{
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::SelectObject((HDC) dc, (HBRUSH) m_oldBrush);
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}
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m_oldBrush = 0;
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if (m_oldFont)
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{
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::SelectObject((HDC) dc, (HFONT) m_oldFont);
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}
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m_oldFont = 0;
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if (m_oldPalette)
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{
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::SelectPalette((HDC) dc, (HPALETTE) m_oldPalette, TRUE);
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}
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m_oldPalette = 0;
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}
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m_brush = wxNullBrush;
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m_pen = wxNullPen;
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m_palette = wxNullPalette;
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m_font = wxNullFont;
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m_backgroundBrush = wxNullBrush;
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m_selectedBitmap = wxNullBitmap;
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}
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// ---------------------------------------------------------------------------
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// clipping
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// ---------------------------------------------------------------------------
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void wxDC::UpdateClipBox()
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{
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RECT rect;
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GetClipBox(GetHdc(), &rect);
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m_clipX1 = (wxCoord) XDEV2LOG(rect.left);
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m_clipY1 = (wxCoord) YDEV2LOG(rect.top);
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m_clipX2 = (wxCoord) XDEV2LOG(rect.right);
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m_clipY2 = (wxCoord) YDEV2LOG(rect.bottom);
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}
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void wxDC::DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
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{
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m_clipping = TRUE;
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// the region coords are always the device ones, so do the translation
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// manually
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//
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// FIXME: possible +/-1 error here, to check!
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HRGN hrgn = ::CreateRectRgn(LogicalToDeviceX(x),
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LogicalToDeviceY(y),
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LogicalToDeviceX(x + w),
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LogicalToDeviceY(y + h));
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if ( !hrgn )
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{
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wxLogLastError(_T("CreateRectRgn"));
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}
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else
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{
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if ( ::SelectClipRgn(GetHdc(), hrgn) == ERROR )
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{
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wxLogLastError(_T("SelectClipRgn"));
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}
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UpdateClipBox();
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}
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}
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void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region)
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{
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wxCHECK_RET( GetHrgnOf(region), wxT("invalid clipping region") );
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m_clipping = TRUE;
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#ifdef __WIN16__
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SelectClipRgn(GetHdc(), GetHrgnOf(region));
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#else // Win32
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ExtSelectClipRgn(GetHdc(), GetHrgnOf(region), RGN_AND);
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#endif // Win16/32
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UpdateClipBox();
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}
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void wxDC::DestroyClippingRegion()
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{
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if (m_clipping && m_hDC)
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{
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// TODO: this should restore the previous clipping region,
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// so that OnPaint processing works correctly, and the update clipping region
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// doesn't get destroyed after the first DestroyClippingRegion.
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HRGN rgn = CreateRectRgn(0, 0, 32000, 32000);
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SelectClipRgn(GetHdc(), rgn);
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DeleteObject(rgn);
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}
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m_clipping = FALSE;
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}
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// ---------------------------------------------------------------------------
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// query capabilities
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// ---------------------------------------------------------------------------
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bool wxDC::CanDrawBitmap() const
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{
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return TRUE;
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}
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bool wxDC::CanGetTextExtent() const
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{
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#ifdef __WXMICROWIN__
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// TODO Extend MicroWindows' GetDeviceCaps function
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return TRUE;
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#else
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// What sort of display is it?
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int technology = ::GetDeviceCaps(GetHdc(), TECHNOLOGY);
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return (technology == DT_RASDISPLAY) || (technology == DT_RASPRINTER);
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#endif
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}
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int wxDC::GetDepth() const
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{
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return (int)::GetDeviceCaps(GetHdc(), BITSPIXEL);
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}
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// ---------------------------------------------------------------------------
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// drawing
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// ---------------------------------------------------------------------------
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void wxDC::Clear()
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{
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RECT rect;
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if ( m_canvas )
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{
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GetClientRect((HWND) m_canvas->GetHWND(), &rect);
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}
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else
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{
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// No, I think we should simply ignore this if printing on e.g.
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// a printer DC.
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// wxCHECK_RET( m_selectedBitmap.Ok(), wxT("this DC can't be cleared") );
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if (!m_selectedBitmap.Ok())
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return;
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rect.left = 0; rect.top = 0;
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rect.right = m_selectedBitmap.GetWidth();
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rect.bottom = m_selectedBitmap.GetHeight();
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}
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(void) ::SetMapMode(GetHdc(), MM_TEXT);
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DWORD colour = GetBkColor(GetHdc());
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HBRUSH brush = CreateSolidBrush(colour);
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FillRect(GetHdc(), &rect, brush);
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DeleteObject(brush);
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::SetMapMode(GetHdc(), MM_ANISOTROPIC);
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::SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
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::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL);
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::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
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::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
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}
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void wxDC::DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style)
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{
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if ( !::ExtFloodFill(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
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col.GetPixel(),
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style == wxFLOOD_SURFACE ? FLOODFILLSURFACE
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: FLOODFILLBORDER) )
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{
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// quoting from the MSDN docs:
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//
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// Following are some of the reasons this function might fail:
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//
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// * The filling could not be completed.
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// * The specified point has the boundary color specified by the
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// crColor parameter (if FLOODFILLBORDER was requested).
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// * The specified point does not have the color specified by
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// crColor (if FLOODFILLSURFACE was requested)
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// * The point is outside the clipping region that is, it is not
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// visible on the device.
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//
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wxLogLastError(wxT("ExtFloodFill"));
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}
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CalcBoundingBox(x, y);
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}
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bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
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{
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wxCHECK_MSG( col, FALSE, _T("NULL colour parameter in wxDC::GetPixel") );
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// get the color of the pixel
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COLORREF pixelcolor = ::GetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y));
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wxRGBToColour(*col, pixelcolor);
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return TRUE;
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}
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void wxDC::DoCrossHair(wxCoord x, wxCoord y)
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{
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wxCoord x1 = x-VIEWPORT_EXTENT;
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wxCoord y1 = y-VIEWPORT_EXTENT;
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wxCoord x2 = x+VIEWPORT_EXTENT;
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wxCoord y2 = y+VIEWPORT_EXTENT;
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(void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y), NULL);
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(void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y));
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(void)MoveToEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y1), NULL);
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(void)LineTo(GetHdc(), XLOG2DEV(x), YLOG2DEV(y2));
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CalcBoundingBox(x1, y1);
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CalcBoundingBox(x2, y2);
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}
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void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
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{
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(void)MoveToEx(GetHdc(), XLOG2DEV(x1), YLOG2DEV(y1), NULL);
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(void)LineTo(GetHdc(), XLOG2DEV(x2), YLOG2DEV(y2));
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// Normalization: Windows doesn't draw the last point of the line.
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// But apparently neither does GTK+, so we take it out again.
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// (void)LineTo(GetHdc(), XLOG2DEV(x2) + 1, YLOG2DEV(y2));
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CalcBoundingBox(x1, y1);
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CalcBoundingBox(x2, y2);
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}
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// Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1)
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// and ending at (x2, y2)
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void wxDC::DoDrawArc(wxCoord x1, wxCoord y1,
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wxCoord x2, wxCoord y2,
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wxCoord xc, wxCoord yc)
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{
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wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
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double dx = xc - x1;
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double dy = yc - y1;
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double radius = (double)sqrt(dx*dx+dy*dy);
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wxCoord r = (wxCoord)radius;
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|
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// treat the special case of full circle separately
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if ( x1 == x2 && y1 == y2 )
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{
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DrawEllipse(xc - r, yc - r, 2*r, 2*r);
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return;
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}
|
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|
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wxCoord xx1 = XLOG2DEV(x1);
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wxCoord yy1 = YLOG2DEV(y1);
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wxCoord xx2 = XLOG2DEV(x2);
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wxCoord yy2 = YLOG2DEV(y2);
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wxCoord xxc = XLOG2DEV(xc);
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wxCoord yyc = YLOG2DEV(yc);
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wxCoord ray = (wxCoord) sqrt(double((xxc-xx1)*(xxc-xx1)+(yyc-yy1)*(yyc-yy1)));
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wxCoord xxx1 = (wxCoord) (xxc-ray);
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wxCoord yyy1 = (wxCoord) (yyc-ray);
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wxCoord xxx2 = (wxCoord) (xxc+ray);
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wxCoord yyy2 = (wxCoord) (yyc+ray);
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if ( m_brush.Ok() && m_brush.GetStyle() != wxTRANSPARENT )
|
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{
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// Have to add 1 to bottom-right corner of rectangle
|
||
// to make semi-circles look right (crooked line otherwise).
|
||
// Unfortunately this is not a reliable method, depends
|
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// on the size of shape.
|
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// TODO: figure out why this happens!
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Pie(GetHdc(),xxx1,yyy1,xxx2+1,yyy2+1, xx1,yy1,xx2,yy2);
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}
|
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else
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{
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Arc(GetHdc(),xxx1,yyy1,xxx2,yyy2, xx1,yy1,xx2,yy2);
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}
|
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CalcBoundingBox(xc - r, yc - r);
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CalcBoundingBox(xc + r, yc + r);
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||
}
|
||
|
||
void wxDC::DoDrawCheckMark(wxCoord x1, wxCoord y1,
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wxCoord width, wxCoord height)
|
||
{
|
||
wxCoord x2 = x1 + width,
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y2 = y1 + height;
|
||
|
||
#if defined(__WIN32__) && !defined(__SC__) && !defined(__WXMICROWIN__)
|
||
RECT rect;
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rect.left = x1;
|
||
rect.top = y1;
|
||
rect.right = x2;
|
||
rect.bottom = y2;
|
||
|
||
DrawFrameControl(GetHdc(), &rect, DFC_MENU, DFCS_MENUCHECK);
|
||
#else // Win16
|
||
// In WIN16, draw a cross
|
||
HPEN blackPen = ::CreatePen(PS_SOLID, 1, RGB(0, 0, 0));
|
||
HPEN whiteBrush = (HPEN)::GetStockObject(WHITE_BRUSH);
|
||
HPEN hPenOld = (HPEN)::SelectObject(GetHdc(), blackPen);
|
||
HPEN hBrushOld = (HPEN)::SelectObject(GetHdc(), whiteBrush);
|
||
::SetROP2(GetHdc(), R2_COPYPEN);
|
||
Rectangle(GetHdc(), x1, y1, x2, y2);
|
||
MoveTo(GetHdc(), x1, y1);
|
||
LineTo(GetHdc(), x2, y2);
|
||
MoveTo(GetHdc(), x2, y1);
|
||
LineTo(GetHdc(), x1, y2);
|
||
::SelectObject(GetHdc(), hPenOld);
|
||
::SelectObject(GetHdc(), hBrushOld);
|
||
::DeleteObject(blackPen);
|
||
#endif // Win32/16
|
||
|
||
CalcBoundingBox(x1, y1);
|
||
CalcBoundingBox(x2, y2);
|
||
}
|
||
|
||
void wxDC::DoDrawPoint(wxCoord x, wxCoord y)
|
||
{
|
||
COLORREF color = 0x00ffffff;
|
||
if (m_pen.Ok())
|
||
{
|
||
color = m_pen.GetColour().GetPixel();
|
||
}
|
||
|
||
SetPixel(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), color);
|
||
|
||
CalcBoundingBox(x, y);
|
||
}
|
||
|
||
void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int fillStyle)
|
||
{
|
||
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
||
|
||
// Do things less efficiently if we have offsets
|
||
if (xoffset != 0 || yoffset != 0)
|
||
{
|
||
POINT *cpoints = new POINT[n];
|
||
int i;
|
||
for (i = 0; i < n; i++)
|
||
{
|
||
cpoints[i].x = (int)(points[i].x + xoffset);
|
||
cpoints[i].y = (int)(points[i].y + yoffset);
|
||
|
||
CalcBoundingBox(cpoints[i].x, cpoints[i].y);
|
||
}
|
||
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
|
||
(void)Polygon(GetHdc(), cpoints, n);
|
||
SetPolyFillMode(GetHdc(),prev);
|
||
delete[] cpoints;
|
||
}
|
||
else
|
||
{
|
||
int i;
|
||
for (i = 0; i < n; i++)
|
||
CalcBoundingBox(points[i].x, points[i].y);
|
||
|
||
int prev = SetPolyFillMode(GetHdc(),fillStyle==wxODDEVEN_RULE?ALTERNATE:WINDING);
|
||
(void)Polygon(GetHdc(), (POINT*) points, n);
|
||
SetPolyFillMode(GetHdc(),prev);
|
||
}
|
||
}
|
||
|
||
void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset)
|
||
{
|
||
// Do things less efficiently if we have offsets
|
||
if (xoffset != 0 || yoffset != 0)
|
||
{
|
||
POINT *cpoints = new POINT[n];
|
||
int i;
|
||
for (i = 0; i < n; i++)
|
||
{
|
||
cpoints[i].x = (int)(points[i].x + xoffset);
|
||
cpoints[i].y = (int)(points[i].y + yoffset);
|
||
|
||
CalcBoundingBox(cpoints[i].x, cpoints[i].y);
|
||
}
|
||
(void)Polyline(GetHdc(), cpoints, n);
|
||
delete[] cpoints;
|
||
}
|
||
else
|
||
{
|
||
int i;
|
||
for (i = 0; i < n; i++)
|
||
CalcBoundingBox(points[i].x, points[i].y);
|
||
|
||
(void)Polyline(GetHdc(), (POINT*) points, n);
|
||
}
|
||
}
|
||
|
||
void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
|
||
{
|
||
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
||
|
||
wxCoord x2 = x + width;
|
||
wxCoord y2 = y + height;
|
||
|
||
if ((m_logicalFunction == wxCOPY) && (m_pen.GetStyle() == wxTRANSPARENT))
|
||
{
|
||
RECT rect;
|
||
rect.left = XLOG2DEV(x);
|
||
rect.top = YLOG2DEV(y);
|
||
rect.right = XLOG2DEV(x2);
|
||
rect.bottom = YLOG2DEV(y2);
|
||
(void)FillRect(GetHdc(), &rect, (HBRUSH)m_brush.GetResourceHandle() );
|
||
}
|
||
else
|
||
{
|
||
// Windows draws the filled rectangles without outline (i.e. drawn with a
|
||
// transparent pen) one pixel smaller in both directions and we want them
|
||
// to have the same size regardless of which pen is used - adjust
|
||
|
||
// I wonder if this shouldn<64>t be done after the LOG2DEV() conversions. RR.
|
||
if ( m_pen.GetStyle() == wxTRANSPARENT )
|
||
{
|
||
x2++;
|
||
y2++;
|
||
}
|
||
|
||
(void)Rectangle(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
|
||
}
|
||
|
||
|
||
CalcBoundingBox(x, y);
|
||
CalcBoundingBox(x2, y2);
|
||
}
|
||
|
||
void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius)
|
||
{
|
||
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
||
|
||
// Now, a negative radius value is interpreted to mean
|
||
// 'the proportion of the smallest X or Y dimension'
|
||
|
||
if (radius < 0.0)
|
||
{
|
||
double smallest = 0.0;
|
||
if (width < height)
|
||
smallest = width;
|
||
else
|
||
smallest = height;
|
||
radius = (- radius * smallest);
|
||
}
|
||
|
||
wxCoord x2 = (x+width);
|
||
wxCoord y2 = (y+height);
|
||
|
||
// Windows draws the filled rectangles without outline (i.e. drawn with a
|
||
// transparent pen) one pixel smaller in both directions and we want them
|
||
// to have the same size regardless of which pen is used - adjust
|
||
if ( m_pen.GetStyle() == wxTRANSPARENT )
|
||
{
|
||
x2++;
|
||
y2++;
|
||
}
|
||
|
||
(void)RoundRect(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2),
|
||
YLOG2DEV(y2), (int) (2*XLOG2DEV(radius)), (int)( 2*YLOG2DEV(radius)));
|
||
|
||
CalcBoundingBox(x, y);
|
||
CalcBoundingBox(x2, y2);
|
||
}
|
||
|
||
void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
|
||
{
|
||
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
||
|
||
wxCoord x2 = (x+width);
|
||
wxCoord y2 = (y+height);
|
||
|
||
(void)Ellipse(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2));
|
||
|
||
CalcBoundingBox(x, y);
|
||
CalcBoundingBox(x2, y2);
|
||
}
|
||
|
||
// Chris Breeze 20/5/98: first implementation of DrawEllipticArc on Windows
|
||
void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
|
||
{
|
||
wxColourChanger cc(*this); // needed for wxSTIPPLE_MASK_OPAQUE handling
|
||
|
||
wxCoord x2 = x + w;
|
||
wxCoord y2 = y + h;
|
||
|
||
int rx1 = XLOG2DEV(x+w/2);
|
||
int ry1 = YLOG2DEV(y+h/2);
|
||
int rx2 = rx1;
|
||
int ry2 = ry1;
|
||
|
||
sa = DegToRad(sa);
|
||
ea = DegToRad(ea);
|
||
|
||
rx1 += (int)(100.0 * abs(w) * cos(sa));
|
||
ry1 -= (int)(100.0 * abs(h) * m_signY * sin(sa));
|
||
rx2 += (int)(100.0 * abs(w) * cos(ea));
|
||
ry2 -= (int)(100.0 * abs(h) * m_signY * sin(ea));
|
||
|
||
// draw pie with NULL_PEN first and then outline otherwise a line is
|
||
// drawn from the start and end points to the centre
|
||
HPEN hpenOld = (HPEN) ::SelectObject(GetHdc(), (HPEN) ::GetStockObject(NULL_PEN));
|
||
if (m_signY > 0)
|
||
{
|
||
(void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2)+1, YLOG2DEV(y2)+1,
|
||
rx1, ry1, rx2, ry2);
|
||
}
|
||
else
|
||
{
|
||
(void)Pie(GetHdc(), XLOG2DEV(x), YLOG2DEV(y)-1, XLOG2DEV(x2)+1, YLOG2DEV(y2),
|
||
rx1, ry1-1, rx2, ry2-1);
|
||
}
|
||
|
||
::SelectObject(GetHdc(), hpenOld);
|
||
|
||
(void)Arc(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), XLOG2DEV(x2), YLOG2DEV(y2),
|
||
rx1, ry1, rx2, ry2);
|
||
|
||
CalcBoundingBox(x, y);
|
||
CalcBoundingBox(x2, y2);
|
||
}
|
||
|
||
void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
|
||
{
|
||
wxCHECK_RET( icon.Ok(), wxT("invalid icon in DrawIcon") );
|
||
|
||
#ifdef __WIN32__
|
||
::DrawIconEx(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon), icon.GetWidth(), icon.GetHeight(), 0, NULL, DI_NORMAL);
|
||
#else
|
||
::DrawIcon(GetHdc(), XLOG2DEV(x), YLOG2DEV(y), GetHiconOf(icon));
|
||
#endif
|
||
|
||
CalcBoundingBox(x, y);
|
||
CalcBoundingBox(x + icon.GetWidth(), y + icon.GetHeight());
|
||
}
|
||
|
||
void wxDC::DoDrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask )
|
||
{
|
||
wxCHECK_RET( bmp.Ok(), _T("invalid bitmap in wxDC::DrawBitmap") );
|
||
|
||
int width = bmp.GetWidth(),
|
||
height = bmp.GetHeight();
|
||
|
||
HBITMAP hbmpMask = 0;
|
||
|
||
if ( useMask )
|
||
{
|
||
wxMask *mask = bmp.GetMask();
|
||
if ( mask )
|
||
hbmpMask = (HBITMAP)mask->GetMaskBitmap();
|
||
|
||
if ( !hbmpMask )
|
||
{
|
||
// don't give assert here because this would break existing
|
||
// programs - just silently ignore useMask parameter
|
||
useMask = FALSE;
|
||
}
|
||
}
|
||
|
||
if ( useMask )
|
||
{
|
||
#ifdef __WIN32__
|
||
// use MaskBlt() with ROP which doesn't do anything to dst in the mask
|
||
// points
|
||
// On some systems, MaskBlt succeeds yet is much much slower
|
||
// than the wxWindows fall-back implementation. So we need
|
||
// to be able to switch this on and off at runtime.
|
||
bool ok = FALSE;
|
||
if (wxSystemSettings::GetOptionInt(wxT("no-maskblt")) == 0)
|
||
{
|
||
HDC hdcMem = ::CreateCompatibleDC(GetHdc());
|
||
::SelectObject(hdcMem, GetHbitmapOf(bmp));
|
||
|
||
ok = ::MaskBlt(GetHdc(), x, y, width, height,
|
||
hdcMem, 0, 0,
|
||
hbmpMask, 0, 0,
|
||
MAKEROP4(SRCCOPY, DSTCOPY)) != 0;
|
||
::DeleteDC(hdcMem);
|
||
}
|
||
|
||
if ( !ok )
|
||
#endif // Win32
|
||
{
|
||
// Rather than reproduce wxDC::Blit, let's do it at the wxWin API
|
||
// level
|
||
wxMemoryDC memDC;
|
||
memDC.SelectObject(bmp);
|
||
|
||
Blit(x, y, width, height, &memDC, 0, 0, wxCOPY, useMask);
|
||
|
||
memDC.SelectObject(wxNullBitmap);
|
||
}
|
||
}
|
||
else // no mask, just use BitBlt()
|
||
{
|
||
HDC cdc = GetHdc();
|
||
HDC memdc = ::CreateCompatibleDC( cdc );
|
||
HBITMAP hbitmap = (HBITMAP) bmp.GetHBITMAP( );
|
||
|
||
wxASSERT_MSG( hbitmap, wxT("bitmap is ok but HBITMAP is NULL?") );
|
||
|
||
COLORREF old_textground = ::GetTextColor(GetHdc());
|
||
COLORREF old_background = ::GetBkColor(GetHdc());
|
||
if (m_textForegroundColour.Ok())
|
||
{
|
||
::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
|
||
}
|
||
if (m_textBackgroundColour.Ok())
|
||
{
|
||
::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
|
||
}
|
||
|
||
::SelectObject( memdc, hbitmap );
|
||
::BitBlt( cdc, x, y, width, height, memdc, 0, 0, SRCCOPY);
|
||
::DeleteDC( memdc );
|
||
|
||
::SetTextColor(GetHdc(), old_textground);
|
||
::SetBkColor(GetHdc(), old_background);
|
||
}
|
||
}
|
||
|
||
void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y)
|
||
{
|
||
DrawAnyText(text, x, y);
|
||
|
||
// update the bounding box
|
||
CalcBoundingBox(x, y);
|
||
|
||
wxCoord w, h;
|
||
GetTextExtent(text, &w, &h);
|
||
CalcBoundingBox(x + w, y + h);
|
||
}
|
||
|
||
void wxDC::DrawAnyText(const wxString& text, wxCoord x, wxCoord y)
|
||
{
|
||
// prepare for drawing the text
|
||
if ( m_textForegroundColour.Ok() )
|
||
SetTextColor(GetHdc(), m_textForegroundColour.GetPixel());
|
||
|
||
DWORD old_background = 0;
|
||
if ( m_textBackgroundColour.Ok() )
|
||
{
|
||
old_background = SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
|
||
}
|
||
|
||
SetBkMode(GetHdc(), m_backgroundMode == wxTRANSPARENT ? TRANSPARENT
|
||
: OPAQUE);
|
||
|
||
if ( ::TextOut(GetHdc(), XLOG2DEV(x), YLOG2DEV(y),
|
||
text.c_str(), text.length()) == 0 )
|
||
{
|
||
wxLogLastError(wxT("TextOut"));
|
||
}
|
||
|
||
// restore the old parameters (text foreground colour may be left because
|
||
// it never is set to anything else, but background should remain
|
||
// transparent even if we just drew an opaque string)
|
||
if ( m_textBackgroundColour.Ok() )
|
||
(void)SetBkColor(GetHdc(), old_background);
|
||
|
||
SetBkMode(GetHdc(), TRANSPARENT);
|
||
}
|
||
|
||
void wxDC::DoDrawRotatedText(const wxString& text,
|
||
wxCoord x, wxCoord y,
|
||
double angle)
|
||
{
|
||
// 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.Ok() )
|
||
{
|
||
DoDrawText(text, x, y);
|
||
}
|
||
#ifndef __WXMICROWIN__
|
||
else
|
||
{
|
||
// NB: don't take DEFAULT_GUI_FONT because it's not TrueType and so
|
||
// can't have non zero orientation/escapement
|
||
wxFont font = m_font.Ok() ? m_font : *wxNORMAL_FONT;
|
||
HFONT hfont = (HFONT)font.GetResourceHandle();
|
||
LOGFONT lf;
|
||
if ( ::GetObject(hfont, sizeof(lf), &lf) == 0 )
|
||
{
|
||
wxLogLastError(wxT("GetObject(hfont)"));
|
||
}
|
||
|
||
// GDI wants the angle in tenth of degree
|
||
long angle10 = (long)(angle * 10);
|
||
lf.lfEscapement = angle10;
|
||
lf. lfOrientation = angle10;
|
||
|
||
hfont = ::CreateFontIndirect(&lf);
|
||
if ( !hfont )
|
||
{
|
||
wxLogLastError(wxT("CreateFont"));
|
||
}
|
||
else
|
||
{
|
||
HFONT hfontOld = (HFONT)::SelectObject(GetHdc(), hfont);
|
||
|
||
DrawAnyText(text, x, y);
|
||
|
||
(void)::SelectObject(GetHdc(), hfontOld);
|
||
(void)::DeleteObject(hfont);
|
||
}
|
||
|
||
// 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/...)
|
||
wxCoord w, h;
|
||
GetTextExtent(text, &w, &h);
|
||
|
||
double rad = DegToRad(angle);
|
||
|
||
// "upper left" and "upper right"
|
||
CalcBoundingBox(x, y);
|
||
CalcBoundingBox(x + w*cos(rad), y - h*sin(rad));
|
||
|
||
// "bottom left" and "bottom right"
|
||
x += (wxCoord)(h*sin(rad));
|
||
y += (wxCoord)(h*cos(rad));
|
||
CalcBoundingBox(x, y);
|
||
CalcBoundingBox(x + h*sin(rad), y + h*cos(rad));
|
||
}
|
||
#endif
|
||
}
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// set GDI objects
|
||
// ---------------------------------------------------------------------------
|
||
|
||
void wxDC::SetPalette(const wxPalette& palette)
|
||
{
|
||
// Set the old object temporarily, in case the assignment deletes an object
|
||
// that's not yet selected out.
|
||
if (m_oldPalette)
|
||
{
|
||
::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE);
|
||
m_oldPalette = 0;
|
||
}
|
||
|
||
m_palette = palette;
|
||
|
||
if (!m_palette.Ok())
|
||
{
|
||
// Setting a NULL colourmap is a way of restoring
|
||
// the original colourmap
|
||
if (m_oldPalette)
|
||
{
|
||
::SelectPalette(GetHdc(), (HPALETTE) m_oldPalette, TRUE);
|
||
m_oldPalette = 0;
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if (m_palette.Ok() && m_palette.GetHPALETTE())
|
||
{
|
||
HPALETTE oldPal = ::SelectPalette(GetHdc(), (HPALETTE) m_palette.GetHPALETTE(), TRUE);
|
||
if (!m_oldPalette)
|
||
m_oldPalette = (WXHPALETTE) oldPal;
|
||
|
||
::RealizePalette(GetHdc());
|
||
}
|
||
}
|
||
|
||
void wxDC::SetFont(const wxFont& the_font)
|
||
{
|
||
// Set the old object temporarily, in case the assignment deletes an object
|
||
// that's not yet selected out.
|
||
if (m_oldFont)
|
||
{
|
||
::SelectObject(GetHdc(), (HFONT) m_oldFont);
|
||
m_oldFont = 0;
|
||
}
|
||
|
||
m_font = the_font;
|
||
|
||
if (!the_font.Ok())
|
||
{
|
||
if (m_oldFont)
|
||
::SelectObject(GetHdc(), (HFONT) m_oldFont);
|
||
m_oldFont = 0;
|
||
}
|
||
|
||
if (m_font.Ok() && m_font.GetResourceHandle())
|
||
{
|
||
HFONT f = (HFONT) ::SelectObject(GetHdc(), (HFONT) m_font.GetResourceHandle());
|
||
if (f == (HFONT) NULL)
|
||
{
|
||
wxLogDebug(wxT("::SelectObject failed in wxDC::SetFont."));
|
||
}
|
||
if (!m_oldFont)
|
||
m_oldFont = (WXHFONT) f;
|
||
}
|
||
}
|
||
|
||
void wxDC::SetPen(const wxPen& pen)
|
||
{
|
||
// Set the old object temporarily, in case the assignment deletes an object
|
||
// that's not yet selected out.
|
||
if (m_oldPen)
|
||
{
|
||
::SelectObject(GetHdc(), (HPEN) m_oldPen);
|
||
m_oldPen = 0;
|
||
}
|
||
|
||
m_pen = pen;
|
||
|
||
if (!m_pen.Ok())
|
||
{
|
||
if (m_oldPen)
|
||
::SelectObject(GetHdc(), (HPEN) m_oldPen);
|
||
m_oldPen = 0;
|
||
}
|
||
|
||
if (m_pen.Ok())
|
||
{
|
||
if (m_pen.GetResourceHandle())
|
||
{
|
||
HPEN p = (HPEN) ::SelectObject(GetHdc(), (HPEN)m_pen.GetResourceHandle());
|
||
if (!m_oldPen)
|
||
m_oldPen = (WXHPEN) p;
|
||
}
|
||
}
|
||
}
|
||
|
||
void wxDC::SetBrush(const wxBrush& brush)
|
||
{
|
||
// Set the old object temporarily, in case the assignment deletes an object
|
||
// that's not yet selected out.
|
||
if (m_oldBrush)
|
||
{
|
||
::SelectObject(GetHdc(), (HBRUSH) m_oldBrush);
|
||
m_oldBrush = 0;
|
||
}
|
||
|
||
m_brush = brush;
|
||
|
||
if (!m_brush.Ok())
|
||
{
|
||
if (m_oldBrush)
|
||
::SelectObject(GetHdc(), (HBRUSH) m_oldBrush);
|
||
m_oldBrush = 0;
|
||
}
|
||
|
||
if (m_brush.Ok())
|
||
{
|
||
// to make sure the brush is alligned with the logical coordinates
|
||
wxBitmap *stipple = m_brush.GetStipple();
|
||
if ( stipple && stipple->Ok() )
|
||
{
|
||
#ifdef __WIN32__
|
||
::SetBrushOrgEx(GetHdc(),
|
||
m_deviceOriginX % stipple->GetWidth(),
|
||
m_deviceOriginY % stipple->GetHeight(),
|
||
NULL); // don't need previous brush origin
|
||
#else
|
||
::SetBrushOrg(GetHdc(),
|
||
m_deviceOriginX % stipple->GetWidth(),
|
||
m_deviceOriginY % stipple->GetHeight());
|
||
#endif
|
||
}
|
||
|
||
if ( m_brush.GetResourceHandle() )
|
||
{
|
||
HBRUSH b = 0;
|
||
b = (HBRUSH) ::SelectObject(GetHdc(), (HBRUSH)m_brush.GetResourceHandle());
|
||
if (!m_oldBrush)
|
||
m_oldBrush = (WXHBRUSH) b;
|
||
}
|
||
}
|
||
}
|
||
|
||
void wxDC::SetBackground(const wxBrush& brush)
|
||
{
|
||
m_backgroundBrush = brush;
|
||
|
||
if (!m_backgroundBrush.Ok())
|
||
return;
|
||
|
||
if (m_canvas)
|
||
{
|
||
bool customColours = TRUE;
|
||
// If we haven't specified wxUSER_COLOURS, don't allow the panel/dialog box to
|
||
// change background colours from the control-panel specified colours.
|
||
if (m_canvas->IsKindOf(CLASSINFO(wxWindow)) && ((m_canvas->GetWindowStyleFlag() & wxUSER_COLOURS) != wxUSER_COLOURS))
|
||
customColours = FALSE;
|
||
|
||
if (customColours)
|
||
{
|
||
if (m_backgroundBrush.GetStyle()==wxTRANSPARENT)
|
||
{
|
||
m_canvas->SetTransparent(TRUE);
|
||
}
|
||
else
|
||
{
|
||
// New behaviour, 10/2/99: setting the background brush of a DC
|
||
// doesn't affect the window background colour. However,
|
||
// I'm leaving in the transparency setting because it's needed by
|
||
// various controls (e.g. wxStaticText) to determine whether to draw
|
||
// transparently or not. TODO: maybe this should be a new function
|
||
// wxWindow::SetTransparency(). Should that apply to the child itself, or the
|
||
// parent?
|
||
// m_canvas->SetBackgroundColour(m_backgroundBrush.GetColour());
|
||
m_canvas->SetTransparent(FALSE);
|
||
}
|
||
}
|
||
}
|
||
COLORREF new_color = m_backgroundBrush.GetColour().GetPixel();
|
||
{
|
||
(void)SetBkColor(GetHdc(), new_color);
|
||
}
|
||
}
|
||
|
||
void wxDC::SetBackgroundMode(int mode)
|
||
{
|
||
m_backgroundMode = mode;
|
||
|
||
// SetBackgroundColour now only refers to text background
|
||
// and m_backgroundMode is used there
|
||
|
||
/*
|
||
if (m_backgroundMode == wxTRANSPARENT)
|
||
::SetBkMode(GetHdc(), TRANSPARENT);
|
||
else
|
||
::SetBkMode(GetHdc(), OPAQUE);
|
||
Last change: AC 29 Jan 101 8:54 pm
|
||
*/
|
||
}
|
||
|
||
void wxDC::SetLogicalFunction(int function)
|
||
{
|
||
m_logicalFunction = function;
|
||
|
||
SetRop(m_hDC);
|
||
}
|
||
|
||
void wxDC::SetRop(WXHDC dc)
|
||
{
|
||
if ( !dc || m_logicalFunction < 0 )
|
||
return;
|
||
|
||
int rop;
|
||
|
||
switch (m_logicalFunction)
|
||
{
|
||
case wxCLEAR: rop = R2_BLACK; break;
|
||
case wxXOR: rop = R2_XORPEN; break;
|
||
case wxINVERT: rop = R2_NOT; break;
|
||
case wxOR_REVERSE: rop = R2_MERGEPENNOT; break;
|
||
case wxAND_REVERSE: rop = R2_MASKPENNOT; break;
|
||
case wxCOPY: rop = R2_COPYPEN; break;
|
||
case wxAND: rop = R2_MASKPEN; break;
|
||
case wxAND_INVERT: rop = R2_MASKNOTPEN; break;
|
||
case wxNO_OP: rop = R2_NOP; break;
|
||
case wxNOR: rop = R2_NOTMERGEPEN; break;
|
||
case wxEQUIV: rop = R2_NOTXORPEN; break;
|
||
case wxSRC_INVERT: rop = R2_NOTCOPYPEN; break;
|
||
case wxOR_INVERT: rop = R2_MERGENOTPEN; break;
|
||
case wxNAND: rop = R2_NOTMASKPEN; break;
|
||
case wxOR: rop = R2_MERGEPEN; break;
|
||
case wxSET: rop = R2_WHITE; break;
|
||
|
||
default:
|
||
wxFAIL_MSG( wxT("unsupported logical function") );
|
||
return;
|
||
}
|
||
|
||
SetROP2(GetHdc(), rop);
|
||
}
|
||
|
||
bool wxDC::StartDoc(const wxString& WXUNUSED(message))
|
||
{
|
||
// We might be previewing, so return TRUE to let it continue.
|
||
return TRUE;
|
||
}
|
||
|
||
void wxDC::EndDoc()
|
||
{
|
||
}
|
||
|
||
void wxDC::StartPage()
|
||
{
|
||
}
|
||
|
||
void wxDC::EndPage()
|
||
{
|
||
}
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// text metrics
|
||
// ---------------------------------------------------------------------------
|
||
|
||
wxCoord wxDC::GetCharHeight() const
|
||
{
|
||
TEXTMETRIC lpTextMetric;
|
||
|
||
GetTextMetrics(GetHdc(), &lpTextMetric);
|
||
|
||
return YDEV2LOGREL(lpTextMetric.tmHeight);
|
||
}
|
||
|
||
wxCoord wxDC::GetCharWidth() const
|
||
{
|
||
TEXTMETRIC lpTextMetric;
|
||
|
||
GetTextMetrics(GetHdc(), &lpTextMetric);
|
||
|
||
return XDEV2LOGREL(lpTextMetric.tmAveCharWidth);
|
||
}
|
||
|
||
void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y,
|
||
wxCoord *descent, wxCoord *externalLeading,
|
||
wxFont *font) const
|
||
{
|
||
HFONT hfontOld;
|
||
if ( font )
|
||
{
|
||
wxASSERT_MSG( font->Ok(), _T("invalid font in wxDC::GetTextExtent") );
|
||
|
||
hfontOld = (HFONT)::SelectObject(GetHdc(), GetHfontOf(*font));
|
||
}
|
||
else // don't change the font
|
||
{
|
||
hfontOld = 0;
|
||
}
|
||
|
||
SIZE sizeRect;
|
||
TEXTMETRIC tm;
|
||
|
||
GetTextExtentPoint(GetHdc(), string, string.length(), &sizeRect);
|
||
GetTextMetrics(GetHdc(), &tm);
|
||
|
||
if (x) *x = XDEV2LOGREL(sizeRect.cx);
|
||
if (y) *y = YDEV2LOGREL(sizeRect.cy);
|
||
if (descent) *descent = tm.tmDescent;
|
||
if (externalLeading) *externalLeading = tm.tmExternalLeading;
|
||
|
||
if ( hfontOld )
|
||
{
|
||
::SelectObject(GetHdc(), hfontOld);
|
||
}
|
||
}
|
||
|
||
void wxDC::SetMapMode(int mode)
|
||
{
|
||
m_mappingMode = mode;
|
||
|
||
int pixel_width = 0;
|
||
int pixel_height = 0;
|
||
int mm_width = 0;
|
||
int mm_height = 0;
|
||
|
||
pixel_width = GetDeviceCaps(GetHdc(), HORZRES);
|
||
pixel_height = GetDeviceCaps(GetHdc(), VERTRES);
|
||
mm_width = GetDeviceCaps(GetHdc(), HORZSIZE);
|
||
mm_height = GetDeviceCaps(GetHdc(), VERTSIZE);
|
||
|
||
if ((pixel_width == 0) || (pixel_height == 0) || (mm_width == 0) || (mm_height == 0))
|
||
{
|
||
return;
|
||
}
|
||
|
||
double mm2pixelsX = pixel_width/mm_width;
|
||
double mm2pixelsY = pixel_height/mm_height;
|
||
|
||
switch (mode)
|
||
{
|
||
case wxMM_TWIPS:
|
||
{
|
||
m_logicalScaleX = (twips2mm * mm2pixelsX);
|
||
m_logicalScaleY = (twips2mm * mm2pixelsY);
|
||
break;
|
||
}
|
||
case wxMM_POINTS:
|
||
{
|
||
m_logicalScaleX = (pt2mm * mm2pixelsX);
|
||
m_logicalScaleY = (pt2mm * mm2pixelsY);
|
||
break;
|
||
}
|
||
case wxMM_METRIC:
|
||
{
|
||
m_logicalScaleX = mm2pixelsX;
|
||
m_logicalScaleY = mm2pixelsY;
|
||
break;
|
||
}
|
||
case wxMM_LOMETRIC:
|
||
{
|
||
m_logicalScaleX = (mm2pixelsX/10.0);
|
||
m_logicalScaleY = (mm2pixelsY/10.0);
|
||
break;
|
||
}
|
||
default:
|
||
case wxMM_TEXT:
|
||
{
|
||
m_logicalScaleX = 1.0;
|
||
m_logicalScaleY = 1.0;
|
||
break;
|
||
}
|
||
}
|
||
|
||
if (::GetMapMode(GetHdc()) != MM_ANISOTROPIC)
|
||
::SetMapMode(GetHdc(), MM_ANISOTROPIC);
|
||
|
||
SetViewportExtEx(GetHdc(), VIEWPORT_EXTENT, VIEWPORT_EXTENT, NULL);
|
||
m_windowExtX = (int)MS_XDEV2LOGREL(VIEWPORT_EXTENT);
|
||
m_windowExtY = (int)MS_YDEV2LOGREL(VIEWPORT_EXTENT);
|
||
::SetWindowExtEx(GetHdc(), m_windowExtX, m_windowExtY, NULL);
|
||
::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
|
||
::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
|
||
}
|
||
|
||
void wxDC::SetUserScale(double x, double y)
|
||
{
|
||
m_userScaleX = x;
|
||
m_userScaleY = y;
|
||
|
||
SetMapMode(m_mappingMode);
|
||
}
|
||
|
||
void wxDC::SetAxisOrientation(bool xLeftRight, bool yBottomUp)
|
||
{
|
||
m_signX = xLeftRight ? 1 : -1;
|
||
m_signY = yBottomUp ? -1 : 1;
|
||
|
||
SetMapMode(m_mappingMode);
|
||
}
|
||
|
||
void wxDC::SetSystemScale(double x, double y)
|
||
{
|
||
m_scaleX = x;
|
||
m_scaleY = y;
|
||
|
||
SetMapMode(m_mappingMode);
|
||
}
|
||
|
||
void wxDC::SetLogicalOrigin(wxCoord x, wxCoord y)
|
||
{
|
||
m_logicalOriginX = x;
|
||
m_logicalOriginY = y;
|
||
|
||
::SetWindowOrgEx(GetHdc(), (int)m_logicalOriginX, (int)m_logicalOriginY, NULL);
|
||
}
|
||
|
||
void wxDC::SetDeviceOrigin(wxCoord x, wxCoord y)
|
||
{
|
||
m_deviceOriginX = x;
|
||
m_deviceOriginY = y;
|
||
|
||
::SetViewportOrgEx(GetHdc(), (int)m_deviceOriginX, (int)m_deviceOriginY, NULL);
|
||
}
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// coordinates transformations
|
||
// ---------------------------------------------------------------------------
|
||
|
||
wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
|
||
{
|
||
double xRel = x - m_deviceOriginX;
|
||
xRel /= m_logicalScaleX*m_userScaleX*m_signX*m_scaleX;
|
||
return (wxCoord)(xRel + m_logicalOriginX);
|
||
}
|
||
|
||
wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
|
||
{
|
||
return (wxCoord) ((x)/(m_logicalScaleX*m_userScaleX*m_signX*m_scaleX));
|
||
}
|
||
|
||
wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
|
||
{
|
||
double yRel = y - m_deviceOriginY;
|
||
yRel /= m_logicalScaleY*m_userScaleY*m_signY*m_scaleY;
|
||
return (wxCoord)(yRel + m_logicalOriginY);
|
||
}
|
||
|
||
wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
|
||
{
|
||
return (wxCoord) ((y)/(m_logicalScaleY*m_userScaleY*m_signY*m_scaleY));
|
||
}
|
||
|
||
wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
|
||
{
|
||
return (wxCoord) ((x - m_logicalOriginX)*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX + m_deviceOriginX);
|
||
}
|
||
|
||
wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
|
||
{
|
||
return (wxCoord) (x*m_logicalScaleX*m_userScaleX*m_signX*m_scaleX);
|
||
}
|
||
|
||
wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
|
||
{
|
||
return (wxCoord) ((y - m_logicalOriginY)*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY + m_deviceOriginY);
|
||
}
|
||
|
||
wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
|
||
{
|
||
return (wxCoord) (y*m_logicalScaleY*m_userScaleY*m_signY*m_scaleY);
|
||
}
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// bit blit
|
||
// ---------------------------------------------------------------------------
|
||
|
||
bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest,
|
||
wxCoord width, wxCoord height,
|
||
wxDC *source, wxCoord xsrc, wxCoord ysrc,
|
||
int rop, bool useMask)
|
||
{
|
||
wxMask *mask = NULL;
|
||
if ( useMask )
|
||
{
|
||
const wxBitmap& bmp = source->m_selectedBitmap;
|
||
mask = bmp.GetMask();
|
||
|
||
if ( !(bmp.Ok() && mask && mask->GetMaskBitmap()) )
|
||
{
|
||
// don't give assert here because this would break existing
|
||
// programs - just silently ignore useMask parameter
|
||
useMask = FALSE;
|
||
}
|
||
}
|
||
|
||
COLORREF old_textground = ::GetTextColor(GetHdc());
|
||
COLORREF old_background = ::GetBkColor(GetHdc());
|
||
if (m_textForegroundColour.Ok())
|
||
{
|
||
::SetTextColor(GetHdc(), m_textForegroundColour.GetPixel() );
|
||
}
|
||
if (m_textBackgroundColour.Ok())
|
||
{
|
||
::SetBkColor(GetHdc(), m_textBackgroundColour.GetPixel() );
|
||
}
|
||
|
||
DWORD dwRop = SRCCOPY;
|
||
switch (rop)
|
||
{
|
||
case wxXOR: dwRop = SRCINVERT; break;
|
||
case wxINVERT: dwRop = DSTINVERT; break;
|
||
case wxOR_REVERSE: dwRop = 0x00DD0228; break;
|
||
case wxAND_REVERSE: dwRop = SRCERASE; break;
|
||
case wxCLEAR: dwRop = BLACKNESS; break;
|
||
case wxSET: dwRop = WHITENESS; break;
|
||
case wxOR_INVERT: dwRop = MERGEPAINT; break;
|
||
case wxAND: dwRop = SRCAND; break;
|
||
case wxOR: dwRop = SRCPAINT; break;
|
||
case wxEQUIV: dwRop = 0x00990066; break;
|
||
case wxNAND: dwRop = 0x007700E6; break;
|
||
case wxAND_INVERT: dwRop = 0x00220326; break;
|
||
case wxCOPY: dwRop = SRCCOPY; break;
|
||
case wxNO_OP: dwRop = DSTCOPY; break;
|
||
case wxSRC_INVERT: dwRop = NOTSRCCOPY; break;
|
||
case wxNOR: dwRop = NOTSRCCOPY; break;
|
||
default:
|
||
wxFAIL_MSG( wxT("unsupported logical function") );
|
||
return FALSE;
|
||
}
|
||
|
||
bool success = FALSE;
|
||
|
||
if (useMask)
|
||
{
|
||
#ifdef __WIN32__
|
||
// we want the part of the image corresponding to the mask to be
|
||
// transparent, so use "DSTCOPY" ROP for the mask points (the usual
|
||
// meaning of fg and bg is inverted which corresponds to wxWin notion
|
||
// of the mask which is also contrary to the Windows one)
|
||
|
||
// On some systems, MaskBlt succeeds yet is much much slower
|
||
// than the wxWindows fall-back implementation. So we need
|
||
// to be able to switch this on and off at runtime.
|
||
if (wxSystemSettings::GetOptionInt(wxT("no-maskblt")) == 0)
|
||
{
|
||
success = ::MaskBlt(GetHdc(), xdest, ydest, width, height,
|
||
GetHdcOf(*source), xsrc, ysrc,
|
||
(HBITMAP)mask->GetMaskBitmap(), xsrc, ysrc,
|
||
MAKEROP4(dwRop, DSTCOPY)) != 0;
|
||
}
|
||
|
||
if ( !success )
|
||
#endif // Win32
|
||
{
|
||
// Blit bitmap with mask
|
||
|
||
// create a temp buffer bitmap and DCs to access it and the mask
|
||
HDC dc_mask = ::CreateCompatibleDC(GetHdcOf(*source));
|
||
HDC dc_buffer = ::CreateCompatibleDC(GetHdc());
|
||
HBITMAP buffer_bmap = ::CreateCompatibleBitmap(GetHdc(), width, height);
|
||
::SelectObject(dc_mask, (HBITMAP) mask->GetMaskBitmap());
|
||
::SelectObject(dc_buffer, buffer_bmap);
|
||
|
||
// copy dest to buffer
|
||
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
|
||
GetHdc(), xdest, ydest, SRCCOPY) )
|
||
{
|
||
wxLogLastError(wxT("BitBlt"));
|
||
}
|
||
|
||
// copy src to buffer using selected raster op
|
||
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
|
||
GetHdcOf(*source), xsrc, ysrc, dwRop) )
|
||
{
|
||
wxLogLastError(wxT("BitBlt"));
|
||
}
|
||
|
||
// set masked area in buffer to BLACK (pixel value 0)
|
||
COLORREF prevBkCol = ::SetBkColor(GetHdc(), RGB(255, 255, 255));
|
||
COLORREF prevCol = ::SetTextColor(GetHdc(), RGB(0, 0, 0));
|
||
if ( !::BitBlt(dc_buffer, 0, 0, (int)width, (int)height,
|
||
dc_mask, xsrc, ysrc, SRCAND) )
|
||
{
|
||
wxLogLastError(wxT("BitBlt"));
|
||
}
|
||
|
||
// set unmasked area in dest to BLACK
|
||
::SetBkColor(GetHdc(), RGB(0, 0, 0));
|
||
::SetTextColor(GetHdc(), RGB(255, 255, 255));
|
||
if ( !::BitBlt(GetHdc(), xdest, ydest, (int)width, (int)height,
|
||
dc_mask, xsrc, ysrc, SRCAND) )
|
||
{
|
||
wxLogLastError(wxT("BitBlt"));
|
||
}
|
||
::SetBkColor(GetHdc(), prevBkCol); // restore colours to original values
|
||
::SetTextColor(GetHdc(), prevCol);
|
||
|
||
// OR buffer to dest
|
||
success = ::BitBlt(GetHdc(), xdest, ydest,
|
||
(int)width, (int)height,
|
||
dc_buffer, 0, 0, SRCPAINT) != 0;
|
||
if ( !success )
|
||
{
|
||
wxLogLastError(wxT("BitBlt"));
|
||
}
|
||
|
||
// tidy up temporary DCs and bitmap
|
||
::SelectObject(dc_mask, 0);
|
||
::DeleteDC(dc_mask);
|
||
::SelectObject(dc_buffer, 0);
|
||
::DeleteDC(dc_buffer);
|
||
::DeleteObject(buffer_bmap);
|
||
}
|
||
}
|
||
else // no mask, just BitBlt() it
|
||
{
|
||
success = ::BitBlt(GetHdc(), xdest, ydest,
|
||
(int)width, (int)height,
|
||
GetHdcOf(*source), xsrc, ysrc, dwRop) != 0;
|
||
if ( !success )
|
||
{
|
||
wxLogLastError(wxT("BitBlt"));
|
||
}
|
||
}
|
||
::SetTextColor(GetHdc(), old_textground);
|
||
::SetBkColor(GetHdc(), old_background);
|
||
|
||
return success;
|
||
}
|
||
|
||
void wxDC::DoGetSize(int *w, int *h) const
|
||
{
|
||
if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZRES);
|
||
if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTRES);
|
||
}
|
||
|
||
void wxDC::DoGetSizeMM(int *w, int *h) const
|
||
{
|
||
if ( w ) *w = ::GetDeviceCaps(GetHdc(), HORZSIZE);
|
||
if ( h ) *h = ::GetDeviceCaps(GetHdc(), VERTSIZE);
|
||
}
|
||
|
||
wxSize wxDC::GetPPI() const
|
||
{
|
||
int x = ::GetDeviceCaps(GetHdc(), LOGPIXELSX);
|
||
int y = ::GetDeviceCaps(GetHdc(), LOGPIXELSY);
|
||
|
||
return wxSize(x, y);
|
||
}
|
||
|
||
// For use by wxWindows only, unless custom units are required.
|
||
void wxDC::SetLogicalScale(double x, double y)
|
||
{
|
||
m_logicalScaleX = x;
|
||
m_logicalScaleY = y;
|
||
}
|
||
|
||
#if WXWIN_COMPATIBILITY
|
||
void wxDC::DoGetTextExtent(const wxString& string, float *x, float *y,
|
||
float *descent, float *externalLeading,
|
||
wxFont *theFont, bool use16bit) const
|
||
{
|
||
wxCoord x1, y1, descent1, externalLeading1;
|
||
GetTextExtent(string, & x1, & y1, & descent1, & externalLeading1, theFont, use16bit);
|
||
*x = x1; *y = y1;
|
||
if (descent)
|
||
*descent = descent1;
|
||
if (externalLeading)
|
||
*externalLeading = externalLeading1;
|
||
}
|
||
#endif
|
||
|
||
|