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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: src/msw/commandlinkbutton.cpp | |
3 | // Purpose: wxCommandLinkButton | |
4 | // Author: Rickard Westerlund | |
5 | // Created: 2010-06-14 | |
6 | // RCS-ID: $Id$ | |
7 | // Copyright: (c) 2010 wxWidgets team | |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | // ---------------------------------------------------------------------------- | |
12 | // headers | |
13 | // ---------------------------------------------------------------------------- | |
14 | ||
15 | // For compilers that support precompilation, includes "wx.h". | |
16 | #include "wx/wxprec.h" | |
17 | ||
18 | #ifdef __BORLANDC__ | |
19 | #pragma hdrstop | |
20 | #endif | |
21 | ||
22 | #if wxUSE_COMMANDLINKBUTTON | |
23 | ||
24 | #ifndef WX_PRECOMP | |
25 | #include "wx/app.h" | |
26 | #include "wx/dcclient.h" | |
27 | #endif | |
28 | ||
29 | #include "wx/commandlinkbutton.h" | |
30 | #include "wx/msw/private.h" | |
31 | #include "wx/msw/private/button.h" | |
32 | #include "wx/msw/private/dc.h" | |
33 | #include "wx/private/window.h" | |
34 | ||
35 | #ifndef BCM_SETNOTE | |
36 | #define BCM_SETNOTE 0x1609 | |
37 | #endif | |
38 | ||
39 | #ifndef BS_COMMANDLINK | |
40 | #define BS_COMMANDLINK 0xE | |
41 | #endif | |
42 | ||
43 | // ---------------------------------------------------------------------------- | |
44 | // Helper functions | |
45 | // ---------------------------------------------------------------------------- | |
46 | ||
47 | namespace | |
48 | { | |
49 | ||
50 | inline bool HasNativeCommandLinkButton() | |
51 | { | |
52 | return wxGetWinVersion() >= wxWinVersion_6; | |
53 | } | |
54 | ||
55 | } // anonymous namespace | |
56 | ||
57 | // ---------------------------------------------------------------------------- | |
58 | // Command link button | |
59 | // ---------------------------------------------------------------------------- | |
60 | ||
61 | bool wxCommandLinkButton::Create(wxWindow *parent, | |
62 | wxWindowID id, | |
63 | const wxString& mainLabel, | |
64 | const wxString& note, | |
65 | const wxPoint& pos, | |
66 | const wxSize& size, | |
67 | long style, | |
68 | const wxValidator& validator, | |
69 | const wxString& name) | |
70 | { | |
71 | if ( ! wxGenericCommandLinkButton::Create(parent, | |
72 | id, | |
73 | mainLabel, | |
74 | note, | |
75 | pos, | |
76 | size, | |
77 | style, | |
78 | validator, | |
79 | name) ) | |
80 | return false; | |
81 | ||
82 | SetMainLabelAndNote(mainLabel, note); | |
83 | SetInitialSize(); | |
84 | ||
85 | return true; | |
86 | } | |
87 | ||
88 | void | |
89 | wxCommandLinkButton::SetMainLabelAndNote(const wxString& mainLabel, | |
90 | const wxString& note) | |
91 | { | |
92 | if ( HasNativeCommandLinkButton() ) | |
93 | { | |
94 | wxButton::SetLabel(mainLabel); | |
95 | ::SendMessage(m_hWnd, BCM_SETNOTE, 0, (LPARAM) note.wx_str()); | |
96 | ||
97 | // Preserve the user-specified label for GetLabel() | |
98 | m_labelOrig = mainLabel; | |
99 | if ( !note.empty() ) | |
100 | m_labelOrig << '\n' << note; | |
101 | } | |
102 | else | |
103 | { | |
104 | wxGenericCommandLinkButton::SetMainLabelAndNote(mainLabel, note); | |
105 | } | |
106 | } | |
107 | ||
108 | WXDWORD wxCommandLinkButton::MSWGetStyle(long style, WXDWORD *exstyle) const | |
109 | { | |
110 | WXDWORD ret = wxButton::MSWGetStyle(style, exstyle); | |
111 | if ( HasNativeCommandLinkButton() ) | |
112 | ret |= BS_COMMANDLINK; | |
113 | ||
114 | return ret; | |
115 | } | |
116 | ||
117 | bool wxCommandLinkButton::HasNativeBitmap() const | |
118 | { | |
119 | return HasNativeCommandLinkButton(); | |
120 | } | |
121 | ||
122 | // ---------------------------------------------------------------------------- | |
123 | // size management including autosizing | |
124 | // ---------------------------------------------------------------------------- | |
125 | ||
126 | // Margin measures can be found at | |
127 | // http://expression.microsoft.com/en-us/ee662150.aspx | |
128 | namespace | |
129 | { | |
130 | const int MAINLABEL_TOP_MARGIN = 16; // Includes image top margin. | |
131 | const int MAINLABEL_NOTE_LEFT_MARGIN = 23; | |
132 | const int NOTE_TOP_MARGIN = 21; | |
133 | const int NOTE_BOTTOM_MARGIN = 1; | |
134 | const int MAINLABEL_NOTE_MARGIN = NOTE_TOP_MARGIN - MAINLABEL_TOP_MARGIN; | |
135 | }; | |
136 | ||
137 | wxSize wxCommandLinkButton::DoGetBestSize() const | |
138 | { | |
139 | wxSize size; | |
140 | ||
141 | // account for the text part if we have it or if we don't have any image at | |
142 | // all (buttons initially created with empty label should still have a non | |
143 | // zero size) | |
144 | if ( ShowsLabel() || !m_imageData ) | |
145 | { | |
146 | int flags = 0; | |
147 | if ( GetAuthNeeded() ) | |
148 | flags |= wxMSWButton::Size_AuthNeeded; | |
149 | ||
150 | wxCommandLinkButton *thisButton = | |
151 | const_cast<wxCommandLinkButton *>(this); | |
152 | wxClientDC dc(thisButton); | |
153 | ||
154 | wxFont noteFont = dc.GetFont(); | |
155 | ||
156 | // 4/3 is the relationship between main label and note font sizes. | |
157 | dc.SetFont(noteFont.Scaled(4.0f/3.0f)); | |
158 | size = dc.GetMultiLineTextExtent(GetLabelText(GetMainLabel())); | |
159 | ||
160 | dc.SetFont(noteFont); | |
161 | wxSize noteSize = dc.GetMultiLineTextExtent(GetLabelText(GetNote())); | |
162 | ||
163 | if ( noteSize.x > size.x ) | |
164 | size.x = noteSize.x; | |
165 | size.y += noteSize.y; | |
166 | ||
167 | size = wxMSWButton::GetFittingSize(thisButton, | |
168 | size, | |
169 | flags); | |
170 | ||
171 | // The height of a standard command link button is 25 and 35 DLUs for | |
172 | // single lines and two lines respectively. Width is not accounted for. | |
173 | int heightDef = GetNote().AfterFirst('\n').empty() ? 25 : 35; | |
174 | wxSize sizeDef = thisButton->ConvertDialogToPixels(wxSize(50, | |
175 | heightDef)); | |
176 | ||
177 | if ( size.y < sizeDef.y ) | |
178 | size.y = sizeDef.y; | |
179 | } | |
180 | ||
181 | if ( m_imageData ) | |
182 | { | |
183 | AdjustForBitmapSize(size); | |
184 | } | |
185 | else | |
186 | { | |
187 | // The default image size is 16x16. | |
188 | size.x += 16; | |
189 | if ( size.y < 16 ) | |
190 | size.y = 16; | |
191 | } | |
192 | ||
193 | size.x += MAINLABEL_NOTE_LEFT_MARGIN; | |
194 | size.y += MAINLABEL_TOP_MARGIN + NOTE_BOTTOM_MARGIN; | |
195 | if ( !GetNote().empty() ) | |
196 | size.y += MAINLABEL_NOTE_MARGIN; | |
197 | ||
198 | CacheBestSize(size); | |
199 | ||
200 | return size; | |
201 | } | |
202 | ||
203 | #endif // wxUSE_COMMANDLINKBUTTON |