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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/gtk/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 | // For compilers that support precompilation, includes "wx.h". | |
11 | #include "wx/wxprec.h" | |
12 | ||
13 | #include "wx/dcmemory.h" | |
14 | #include "wx/gtk/dcmemory.h" | |
15 | ||
16 | #include <gdk/gdk.h> | |
17 | #include <gtk/gtk.h> | |
18 | ||
19 | //----------------------------------------------------------------------------- | |
20 | // wxMemoryDCImpl | |
21 | //----------------------------------------------------------------------------- | |
22 | ||
23 | IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl, wxWindowDCImpl) | |
24 | ||
25 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner ) | |
26 | : wxWindowDCImpl( owner ) | |
27 | { | |
28 | Init(); | |
29 | } | |
30 | ||
31 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxBitmap& bitmap) | |
32 | : wxWindowDCImpl( owner ) | |
33 | { | |
34 | Init(); | |
35 | DoSelect(bitmap); | |
36 | } | |
37 | ||
38 | wxMemoryDCImpl::wxMemoryDCImpl( wxMemoryDC *owner, wxDC *WXUNUSED(dc) ) | |
39 | : wxWindowDCImpl( owner ) | |
40 | { | |
41 | Init(); | |
42 | } | |
43 | ||
44 | wxMemoryDCImpl::~wxMemoryDCImpl() | |
45 | { | |
46 | g_object_unref(m_context); | |
47 | } | |
48 | ||
49 | void wxMemoryDCImpl::Init() | |
50 | { | |
51 | m_ok = false; | |
52 | ||
53 | m_cmap = gtk_widget_get_default_colormap(); | |
54 | ||
55 | m_context = gdk_pango_context_get(); | |
56 | // Note: The Sun customised version of Pango shipping with Solaris 10 | |
57 | // crashes if the language is left NULL (see bug 1374114) | |
58 | pango_context_set_language( m_context, gtk_get_default_language() ); | |
59 | m_layout = pango_layout_new( m_context ); | |
60 | m_fontdesc = pango_font_description_copy( pango_context_get_font_description( m_context ) ); | |
61 | } | |
62 | ||
63 | void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap ) | |
64 | { | |
65 | Destroy(); | |
66 | ||
67 | m_selected = bitmap; | |
68 | if (m_selected.Ok()) | |
69 | { | |
70 | m_gdkwindow = m_selected.GetPixmap(); | |
71 | ||
72 | m_selected.PurgeOtherRepresentations(wxBitmap::Pixmap); | |
73 | ||
74 | SetUpDC( true ); | |
75 | } | |
76 | else | |
77 | { | |
78 | m_ok = false; | |
79 | m_gdkwindow = (GdkWindow *) NULL; | |
80 | } | |
81 | } | |
82 | ||
83 | void wxMemoryDCImpl::SetPen( const wxPen& penOrig ) | |
84 | { | |
85 | wxPen pen( penOrig ); | |
86 | if ( m_selected.Ok() && | |
87 | m_selected.GetDepth() == 1 && | |
88 | (pen != *wxTRANSPARENT_PEN) ) | |
89 | { | |
90 | pen.SetColour( pen.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE ); | |
91 | } | |
92 | ||
93 | wxWindowDCImpl::SetPen( pen ); | |
94 | } | |
95 | ||
96 | void wxMemoryDCImpl::SetBrush( const wxBrush& brushOrig ) | |
97 | { | |
98 | wxBrush brush( brushOrig ); | |
99 | if ( m_selected.Ok() && | |
100 | m_selected.GetDepth() == 1 && | |
101 | (brush != *wxTRANSPARENT_BRUSH) ) | |
102 | { | |
103 | brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE); | |
104 | } | |
105 | ||
106 | wxWindowDCImpl::SetBrush( brush ); | |
107 | } | |
108 | ||
109 | void wxMemoryDCImpl::SetBackground( const wxBrush& brushOrig ) | |
110 | { | |
111 | wxBrush brush(brushOrig); | |
112 | ||
113 | if ( m_selected.Ok() && | |
114 | m_selected.GetDepth() == 1 && | |
115 | (brush != *wxTRANSPARENT_BRUSH) ) | |
116 | { | |
117 | brush.SetColour( brush.GetColour() == *wxWHITE ? *wxBLACK : *wxWHITE ); | |
118 | } | |
119 | ||
120 | wxWindowDCImpl::SetBackground( brush ); | |
121 | } | |
122 | ||
123 | void wxMemoryDCImpl::SetTextForeground( const wxColour& col ) | |
124 | { | |
125 | if ( m_selected.Ok() && m_selected.GetDepth() == 1 ) | |
126 | wxWindowDCImpl::SetTextForeground( col == *wxWHITE ? *wxBLACK : *wxWHITE); | |
127 | else | |
128 | wxWindowDCImpl::SetTextForeground( col ); | |
129 | } | |
130 | ||
131 | void wxMemoryDCImpl::SetTextBackground( const wxColour &col ) | |
132 | { | |
133 | if (m_selected.Ok() && m_selected.GetDepth() == 1) | |
134 | wxWindowDCImpl::SetTextBackground( col == *wxWHITE ? *wxBLACK : *wxWHITE ); | |
135 | else | |
136 | wxWindowDCImpl::SetTextBackground( col ); | |
137 | } | |
138 | ||
139 | void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const | |
140 | { | |
141 | if (m_selected.Ok()) | |
142 | { | |
143 | if (width) (*width) = m_selected.GetWidth(); | |
144 | if (height) (*height) = m_selected.GetHeight(); | |
145 | } | |
146 | else | |
147 | { | |
148 | if (width) (*width) = 0; | |
149 | if (height) (*height) = 0; | |
150 | } | |
151 | } | |
152 | ||
153 | wxBitmap wxMemoryDCImpl::DoGetAsBitmap(const wxRect *subrect) const | |
154 | { | |
155 | wxBitmap bmp = GetSelectedBitmap(); | |
156 | return subrect ? bmp.GetSubBitmap(*subrect) : bmp; | |
157 | } | |
158 | ||
159 | const wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() const | |
160 | { | |
161 | return m_selected; | |
162 | } | |
163 | ||
164 | wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() | |
165 | { | |
166 | return m_selected; | |
167 | } | |
168 |