| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: dcmemory.cpp |
| 3 | // Purpose: |
| 4 | // Author: Robert Roebling |
| 5 | // RCS-ID: $Id$ |
| 6 | // Copyright: (c) 1998 Robert Roebling |
| 7 | // Licence: wxWindows licence |
| 8 | ///////////////////////////////////////////////////////////////////////////// |
| 9 | |
| 10 | #ifdef __GNUG__ |
| 11 | #pragma implementation "dcmemory.h" |
| 12 | #endif |
| 13 | |
| 14 | #include "wx/dcmemory.h" |
| 15 | |
| 16 | #include <gdk/gdk.h> |
| 17 | #include <gtk/gtk.h> |
| 18 | |
| 19 | //----------------------------------------------------------------------------- |
| 20 | // wxMemoryDC |
| 21 | //----------------------------------------------------------------------------- |
| 22 | |
| 23 | IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC) |
| 24 | |
| 25 | wxMemoryDC::wxMemoryDC() : wxWindowDC() |
| 26 | { |
| 27 | m_ok = FALSE; |
| 28 | |
| 29 | m_cmap = gtk_widget_get_default_colormap(); |
| 30 | } |
| 31 | |
| 32 | wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) ) |
| 33 | : wxWindowDC() |
| 34 | { |
| 35 | m_ok = FALSE; |
| 36 | |
| 37 | m_cmap = gtk_widget_get_default_colormap(); |
| 38 | } |
| 39 | |
| 40 | wxMemoryDC::~wxMemoryDC() |
| 41 | { |
| 42 | } |
| 43 | |
| 44 | void wxMemoryDC::SelectObject( const wxBitmap& bitmap ) |
| 45 | { |
| 46 | Destroy(); |
| 47 | m_selected = bitmap; |
| 48 | if (m_selected.Ok()) |
| 49 | { |
| 50 | if (m_selected.GetPixmap()) |
| 51 | { |
| 52 | m_window = m_selected.GetPixmap(); |
| 53 | } |
| 54 | else |
| 55 | { |
| 56 | m_window = m_selected.GetBitmap(); |
| 57 | } |
| 58 | |
| 59 | m_isMemDC = TRUE; |
| 60 | |
| 61 | SetUpDC(); |
| 62 | } |
| 63 | else |
| 64 | { |
| 65 | m_ok = FALSE; |
| 66 | m_window = (GdkWindow *) NULL; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | void wxMemoryDC::SetPen( const wxPen &pen ) |
| 71 | { |
| 72 | if (m_selected.Ok() && m_selected.GetBitmap() && (*wxTRANSPARENT_PEN != pen)) |
| 73 | { |
| 74 | if (*wxWHITE_PEN == pen) |
| 75 | wxWindowDC::SetPen( *wxBLACK_PEN ); |
| 76 | else |
| 77 | wxWindowDC::SetPen( *wxWHITE_PEN ); |
| 78 | } |
| 79 | else |
| 80 | { |
| 81 | wxWindowDC::SetPen( pen ); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | void wxMemoryDC::SetBrush( const wxBrush &brush ) |
| 86 | { |
| 87 | if (m_selected.Ok() && m_selected.GetBitmap() && (*wxTRANSPARENT_BRUSH != brush)) |
| 88 | { |
| 89 | if (*wxWHITE_BRUSH == brush) |
| 90 | wxWindowDC::SetBrush( *wxBLACK_BRUSH ); |
| 91 | else |
| 92 | wxWindowDC::SetBrush( *wxWHITE_BRUSH ); |
| 93 | } |
| 94 | else |
| 95 | { |
| 96 | wxWindowDC::SetBrush( brush ); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | void wxMemoryDC::SetTextForeground( const wxColour &col ) |
| 101 | { |
| 102 | if (m_selected.Ok() && m_selected.GetBitmap()) |
| 103 | { |
| 104 | if (col == *wxWHITE) |
| 105 | wxWindowDC::SetTextForeground( *wxBLACK ); |
| 106 | else |
| 107 | wxWindowDC::SetTextForeground( *wxWHITE ); |
| 108 | } |
| 109 | else |
| 110 | { |
| 111 | wxWindowDC::SetTextForeground( col ); |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | void wxMemoryDC::SetTextBackground( const wxColour &col ) |
| 116 | { |
| 117 | if (m_selected.Ok() && m_selected.GetBitmap()) |
| 118 | { |
| 119 | if (col == *wxWHITE) |
| 120 | wxWindowDC::SetTextBackground( *wxBLACK ); |
| 121 | else |
| 122 | wxWindowDC::SetTextBackground( *wxWHITE ); |
| 123 | } |
| 124 | else |
| 125 | { |
| 126 | wxWindowDC::SetTextBackground( col ); |
| 127 | } |
| 128 | } |
| 129 | |
| 130 | void wxMemoryDC::DoGetSize( int *width, int *height ) const |
| 131 | { |
| 132 | if (m_selected.Ok()) |
| 133 | { |
| 134 | if (width) (*width) = m_selected.GetWidth(); |
| 135 | if (height) (*height) = m_selected.GetHeight(); |
| 136 | } |
| 137 | else |
| 138 | { |
| 139 | if (width) (*width) = 0; |
| 140 | if (height) (*height) = 0; |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | |