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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: wx/bannerwindow.h | |
3 | // Purpose: wxBannerWindow class declaration | |
4 | // Author: Vadim Zeitlin | |
5 | // Created: 2011-08-16 | |
6 | // RCS-ID: $Id$ | |
7 | // Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org> | |
8 | // Licence: wxWindows licence | |
9 | /////////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #ifndef _WX_BANNERWINDOW_H_ | |
12 | #define _WX_BANNERWINDOW_H_ | |
13 | ||
14 | #include "wx/defs.h" | |
15 | ||
16 | #if wxUSE_BANNERWINDOW | |
17 | ||
18 | #include "wx/bitmap.h" | |
19 | #include "wx/event.h" | |
20 | #include "wx/window.h" | |
21 | ||
22 | class WXDLLIMPEXP_FWD_CORE wxBitmap; | |
23 | class WXDLLIMPEXP_FWD_CORE wxColour; | |
24 | class WXDLLIMPEXP_FWD_CORE wxDC; | |
25 | ||
26 | extern WXDLLIMPEXP_DATA_ADV(const char) wxBannerWindowNameStr[]; | |
27 | ||
28 | // ---------------------------------------------------------------------------- | |
29 | // A simple banner window showing either a bitmap or text. | |
30 | // ---------------------------------------------------------------------------- | |
31 | ||
32 | class WXDLLIMPEXP_ADV wxBannerWindow : public wxWindow | |
33 | { | |
34 | public: | |
35 | // Default constructor, use Create() later. | |
36 | wxBannerWindow() { Init(); } | |
37 | ||
38 | // Convenient constructor that should be used in the majority of cases. | |
39 | // | |
40 | // The banner orientation changes how the text in it is displayed and also | |
41 | // defines where is the bitmap truncated if it's too big to fit but doesn't | |
42 | // do anything for the banner position, this is supposed to be taken care | |
43 | // of in the usual way, e.g. using sizers. | |
44 | wxBannerWindow(wxWindow* parent, wxDirection dir = wxLEFT) | |
45 | { | |
46 | Init(); | |
47 | ||
48 | Create(parent, wxID_ANY, dir); | |
49 | } | |
50 | ||
51 | // Full constructor provided for consistency with the other classes only. | |
52 | wxBannerWindow(wxWindow* parent, | |
53 | wxWindowID winid, | |
54 | wxDirection dir = wxLEFT, | |
55 | const wxPoint& pos = wxDefaultPosition, | |
56 | const wxSize& size = wxDefaultSize, | |
57 | long style = 0, | |
58 | const wxString& name = wxBannerWindowNameStr) | |
59 | { | |
60 | Init(); | |
61 | ||
62 | Create(parent, winid, dir, pos, size, style, name); | |
63 | } | |
64 | ||
65 | // Can be only called on objects created with the default constructor. | |
66 | bool Create(wxWindow* parent, | |
67 | wxWindowID winid, | |
68 | wxDirection dir = wxLEFT, | |
69 | const wxPoint& pos = wxDefaultPosition, | |
70 | const wxSize& size = wxDefaultSize, | |
71 | long style = 0, | |
72 | const wxString& name = wxBannerWindowNameStr); | |
73 | ||
74 | ||
75 | // Provide an existing bitmap to show. For wxLEFT orientation the bitmap is | |
76 | // truncated from the top, for wxTOP and wxBOTTOM -- from the right and for | |
77 | // wxRIGHT -- from the bottom, so put the most important part of the bitmap | |
78 | // information in the opposite direction. | |
79 | void SetBitmap(const wxBitmap& bmp); | |
80 | ||
81 | // Set the text to display. This is mutually exclusive with SetBitmap(). | |
82 | // Title is rendered in bold and should be single line, message can have | |
83 | // multiple lines but is not wrapped automatically. | |
84 | void SetText(const wxString& title, const wxString& message); | |
85 | ||
86 | // Set the colours between which the gradient runs. This can be combined | |
87 | // with SetText() but not SetBitmap(). | |
88 | void SetGradient(const wxColour& start, const wxColour& end); | |
89 | ||
90 | protected: | |
91 | virtual wxSize DoGetBestClientSize() const; | |
92 | ||
93 | private: | |
94 | // Common part of all constructors. | |
95 | void Init(); | |
96 | ||
97 | // Fully invalidates the window. | |
98 | void OnSize(wxSizeEvent& event); | |
99 | ||
100 | // Redraws the window using either m_bitmap or m_title/m_message. | |
101 | void OnPaint(wxPaintEvent& event); | |
102 | ||
103 | // Helper of OnPaint(): draw the bitmap at the correct position depending | |
104 | // on our orientation. | |
105 | void DrawBitmapBackground(wxDC& dc); | |
106 | ||
107 | // Helper of OnPaint(): draw the text in the appropriate direction. | |
108 | void DrawBannerTextLine(wxDC& dc, const wxString& str, const wxPoint& pos); | |
109 | ||
110 | // Return the font to use for the title. Currently this is hardcoded as a | |
111 | // larger bold version of the standard window font but could be made | |
112 | // configurable in the future. | |
113 | wxFont GetTitleFont() const; | |
114 | ||
115 | ||
116 | // The window side along which the banner is laid out. | |
117 | wxDirection m_direction; | |
118 | ||
119 | // If valid, this bitmap is drawn as is. | |
120 | wxBitmap m_bitmap; | |
121 | ||
122 | // The title and main message to draw, used if m_bitmap is invalid. | |
123 | wxString m_title, | |
124 | m_message; | |
125 | ||
126 | // Start and stop gradient colours, only used when drawing text. | |
127 | wxColour m_colStart, | |
128 | m_colEnd; | |
129 | ||
130 | wxDECLARE_EVENT_TABLE(); | |
131 | ||
132 | wxDECLARE_NO_COPY_CLASS(wxBannerWindow); | |
133 | }; | |
134 | ||
135 | #endif // wxUSE_BANNERWINDOW | |
136 | ||
137 | #endif // _WX_BANNERWINDOW_H_ |