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[wxWidgets.git] / include / wx / renderer.h
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1///////////////////////////////////////////////////////////////////////////////
2// Name: wx/renderer.h
3// Purpose: wxRendererNative class declaration
4// Author: Vadim Zeitlin
5// Modified by:
6// Created: 20.07.2003
7// RCS-ID: $Id$
77ffb593 8// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
65571936 9// Licence: wxWindows licence
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10///////////////////////////////////////////////////////////////////////////////
11
12/*
77ffb593 13 Renderers are used in wxWidgets for two similar but different things:
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14 (a) wxUniversal uses them to draw everything, i.e. all the control
15 (b) all the native ports use them to draw generic controls only
16
17 wxUniversal needs more functionality than what is included in the base class
18 as it needs to draw stuff like scrollbars which are never going to be
19 generic. So we put the bare minimum needed by the native ports here and the
20 full wxRenderer class is declared in wx/univ/renderer.h and is only used by
21 wxUniveral (although note that native ports can load wxRenderer objects from
22 theme DLLs and use them as wxRendererNative ones, of course).
23 */
24
25#ifndef _WX_RENDERER_H_
26#define _WX_RENDERER_H_
27
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28class WXDLLIMPEXP_FWD_CORE wxDC;
29class WXDLLIMPEXP_FWD_CORE wxWindow;
38c4cb6a 30
7df07b10 31#include "wx/gdicmn.h" // for wxPoint
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32#include "wx/colour.h"
33#include "wx/font.h"
34#include "wx/bitmap.h"
35#include "wx/string.h"
7df07b10 36
f0244295 37// some platforms have their own renderers, others use the generic one
82ef81ed 38#if defined(__WXMSW__) || defined(__WXMAC__) || defined(__WXGTK__)
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39 #define wxHAS_NATIVE_RENDERER
40#else
41 #undef wxHAS_NATIVE_RENDERER
42#endif
43
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44// ----------------------------------------------------------------------------
45// constants
46// ----------------------------------------------------------------------------
47
48// control state flags used in wxRenderer and wxColourScheme
49enum
50{
51 wxCONTROL_DISABLED = 0x00000001, // control is disabled
52 wxCONTROL_FOCUSED = 0x00000002, // currently has keyboard focus
53 wxCONTROL_PRESSED = 0x00000004, // (button) is pressed
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54 wxCONTROL_SPECIAL = 0x00000008, // control-specific bit:
55 wxCONTROL_ISDEFAULT = wxCONTROL_SPECIAL, // only for the buttons
56 wxCONTROL_ISSUBMENU = wxCONTROL_SPECIAL, // only for the menu items
57 wxCONTROL_EXPANDED = wxCONTROL_SPECIAL, // only for the tree items
58 wxCONTROL_SIZEGRIP = wxCONTROL_SPECIAL, // only for the status bar panes
8a461249 59 wxCONTROL_FLAT = wxCONTROL_SPECIAL, // checkboxes only: flat border
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60 wxCONTROL_CURRENT = 0x00000010, // mouse is currently over the control
61 wxCONTROL_SELECTED = 0x00000020, // selected item in e.g. listbox
62 wxCONTROL_CHECKED = 0x00000040, // (check/radio button) is checked
63 wxCONTROL_CHECKABLE = 0x00000080, // (menu) item can be checked
415a0ff1 64 wxCONTROL_UNDETERMINED = wxCONTROL_CHECKABLE, // (check) undetermined state
9c7f49f5 65
a61c9122 66 wxCONTROL_FLAGS_MASK = 0x000000ff,
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67
68 // this is a pseudo flag not used directly by wxRenderer but rather by some
69 // controls internally
70 wxCONTROL_DIRTY = 0x80000000
71};
72
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73// ----------------------------------------------------------------------------
74// helper structs
75// ----------------------------------------------------------------------------
76
77// wxSplitterWindow parameters
78struct WXDLLEXPORT wxSplitterRenderParams
79{
80 // the only way to initialize this struct is by using this ctor
81 wxSplitterRenderParams(wxCoord widthSash_, wxCoord border_, bool isSens_)
82 : widthSash(widthSash_), border(border_), isHotSensitive(isSens_)
83 {
84 }
85
86 // the width of the splitter sash
87 const wxCoord widthSash;
88
89 // the width of the border of the splitter window
90 const wxCoord border;
91
92 // true if the splitter changes its appearance when the mouse is over it
93 const bool isHotSensitive;
94};
95
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96
97// extra optional parameters for DrawHeaderButton
98struct WXDLLEXPORT wxHeaderButtonParams
99{
100 wxHeaderButtonParams()
101 : m_labelAlignment(wxALIGN_LEFT)
102 { }
0856300f 103
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104 wxColour m_arrowColour;
105 wxColour m_selectionColour;
106 wxString m_labelText;
107 wxFont m_labelFont;
108 wxColour m_labelColour;
109 wxBitmap m_labelBitmap;
110 int m_labelAlignment;
111};
112
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113enum wxHeaderSortIconType {
114 wxHDR_SORT_ICON_NONE, // Header button has no sort arrow
115 wxHDR_SORT_ICON_UP, // Header button an an up sort arrow icon
116 wxHDR_SORT_ICON_DOWN // Header button an a down sort arrow icon
117};
118
4b94ddc4 119
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120// wxRendererNative interface version
121struct WXDLLEXPORT wxRendererVersion
122{
123 wxRendererVersion(int version_, int age_) : version(version_), age(age_) { }
124
125 // default copy ctor, assignment operator and dtor are ok
126
127 // the current version and age of wxRendererNative interface: different
128 // versions are incompatible (in both ways) while the ages inside the same
129 // version are upwards compatible, i.e. the version of the renderer must
130 // match the version of the main program exactly while the age may be
131 // highergreater or equal to it
132 //
133 // NB: don't forget to increment age after adding any new virtual function!
134 enum
135 {
136 Current_Version = 1,
137 Current_Age = 5
138 };
139
140
141 // check if the given version is compatible with the current one
142 static bool IsCompatible(const wxRendererVersion& ver)
143 {
144 return ver.version == Current_Version && ver.age >= Current_Age;
145 }
146
147 const int version;
148 const int age;
149};
150
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151// ----------------------------------------------------------------------------
152// wxRendererNative: abstracts drawing methods needed by the native controls
153// ----------------------------------------------------------------------------
154
155class WXDLLEXPORT wxRendererNative
156{
157public:
158 // drawing functions
159 // -----------------
160
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161 // draw the header control button (used by wxListCtrl) Returns optimal
162 // width for the label contents.
163 virtual int DrawHeaderButton(wxWindow *win,
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164 wxDC& dc,
165 const wxRect& rect,
4b94ddc4 166 int flags = 0,
80752b57 167 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
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168 wxHeaderButtonParams* params=NULL) = 0;
169
170
171 // Draw the contents of a header control button (label, sort arrows, etc.)
172 // Normally only called by DrawHeaderButton.
c97c9952 173 virtual int DrawHeaderButtonContents(wxWindow *win,
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174 wxDC& dc,
175 const wxRect& rect,
176 int flags = 0,
80752b57 177 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
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178 wxHeaderButtonParams* params=NULL) = 0;
179
180 // Returns the default height of a header button, either a fixed platform
181 // height if available, or a generic height based on the window's font.
182 virtual int GetHeaderButtonHeight(wxWindow *win) = 0;
183
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184
185 // draw the expanded/collapsed icon for a tree control item
186 virtual void DrawTreeItemButton(wxWindow *win,
187 wxDC& dc,
188 const wxRect& rect,
189 int flags = 0) = 0;
190
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191 // draw the border for sash window: this border must be such that the sash
192 // drawn by DrawSash() blends into it well
193 virtual void DrawSplitterBorder(wxWindow *win,
194 wxDC& dc,
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195 const wxRect& rect,
196 int flags = 0) = 0;
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197
198 // draw a (vertical) sash
199 virtual void DrawSplitterSash(wxWindow *win,
200 wxDC& dc,
201 const wxSize& size,
62dc9cb4 202 wxCoord position,
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203 wxOrientation orient,
204 int flags = 0) = 0;
b3208e11 205
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206 // draw a combobox dropdown button
207 //
4c85ab75 208 // flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
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209 virtual void DrawComboBoxDropButton(wxWindow *win,
210 wxDC& dc,
211 const wxRect& rect,
212 int flags = 0) = 0;
213
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214 // draw a dropdown arrow
215 //
216 // flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
217 virtual void DrawDropArrow(wxWindow *win,
218 wxDC& dc,
219 const wxRect& rect,
220 int flags = 0) = 0;
b3208e11 221
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222 // draw check button
223 //
224 // flags may use wxCONTROL_CHECKED, wxCONTROL_UNDETERMINED and wxCONTROL_CURRENT
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225 virtual void DrawCheckBox(wxWindow *win,
226 wxDC& dc,
227 const wxRect& rect,
228 int flags = 0) = 0;
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229
230 // draw blank button
231 //
232 // flags may use wxCONTROL_PRESSED, wxCONTROL_CURRENT and wxCONTROL_ISDEFAULT
233 virtual void DrawPushButton(wxWindow *win,
234 wxDC& dc,
235 const wxRect& rect,
236 int flags = 0) = 0;
237
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238 // draw rectangle indicating that an item in e.g. a list control
239 // has been selected or focused
240 //
0856300f 241 // flags may use
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242 // wxCONTROL_SELECTED (item is selected, e.g. draw background)
243 // wxCONTROL_CURRENT (item is the current item, e.g. dotted border)
244 // wxCONTROL_FOCUSED (the whole control has focus, e.g. blue background vs. grey otherwise)
245 virtual void DrawItemSelectionRect(wxWindow *win,
246 wxDC& dc,
247 const wxRect& rect,
248 int flags = 0) = 0;
249
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250 // draw the focus rectangle around the label contained in the given rect
251 //
252 // only wxCONTROL_SELECTED makes sense in flags here
253 virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0) = 0;
254
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255 // geometry functions
256 // ------------------
257
258 // get the splitter parameters: the x field of the returned point is the
259 // sash width and the y field is the border width
af99040c 260 virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win) = 0;
b3208e11 261
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262
263 // pseudo constructors
264 // -------------------
265
266 // return the currently used renderer
267 static wxRendererNative& Get();
268
269 // return the generic implementation of the renderer
270 static wxRendererNative& GetGeneric();
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271
272 // return the default (native) implementation for this platform
273 static wxRendererNative& GetDefault();
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274
275
276 // changing the global renderer
277 // ----------------------------
278
279#if wxUSE_DYNLIB_CLASS
280 // load the renderer from the specified DLL, the returned pointer must be
281 // deleted by caller if not NULL when it is not used any more
282 static wxRendererNative *Load(const wxString& name);
283#endif // wxUSE_DYNLIB_CLASS
284
285 // set the renderer to use, passing NULL reverts to using the default
286 // renderer
287 //
288 // return the previous renderer used with Set() or NULL if none
289 static wxRendererNative *Set(wxRendererNative *renderer);
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290
291
292 // miscellaneous stuff
293 // -------------------
294
295 // this function is used for version checking: Load() refuses to load any
296 // DLLs implementing an older or incompatible version; it should be
297 // implemented simply by returning wxRendererVersion::Current_XXX values
298 virtual wxRendererVersion GetVersion() const = 0;
299
300 // virtual dtor for any base class
301 virtual ~wxRendererNative();
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302};
303
304// ----------------------------------------------------------------------------
305// wxDelegateRendererNative: allows reuse of renderers code
306// ----------------------------------------------------------------------------
307
308class WXDLLEXPORT wxDelegateRendererNative : public wxRendererNative
309{
310public:
311 wxDelegateRendererNative()
312 : m_rendererNative(GetGeneric()) { }
313
314 wxDelegateRendererNative(wxRendererNative& rendererNative)
315 : m_rendererNative(rendererNative) { }
316
317
c97c9952 318 virtual int DrawHeaderButton(wxWindow *win,
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319 wxDC& dc,
320 const wxRect& rect,
4b94ddc4 321 int flags = 0,
80752b57 322 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
4b94ddc4 323 wxHeaderButtonParams* params = NULL)
c97c9952 324 { return m_rendererNative.DrawHeaderButton(win, dc, rect, flags, sortArrow, params); }
0856300f 325
c97c9952 326 virtual int DrawHeaderButtonContents(wxWindow *win,
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327 wxDC& dc,
328 const wxRect& rect,
329 int flags = 0,
80752b57 330 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
4b94ddc4 331 wxHeaderButtonParams* params = NULL)
c97c9952 332 { return m_rendererNative.DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params); }
0856300f 333
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334 virtual int GetHeaderButtonHeight(wxWindow *win)
335 { return m_rendererNative.GetHeaderButtonHeight(win); }
b3208e11 336
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337 virtual void DrawTreeItemButton(wxWindow *win,
338 wxDC& dc,
339 const wxRect& rect,
340 int flags = 0)
341 { m_rendererNative.DrawTreeItemButton(win, dc, rect, flags); }
342
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343 virtual void DrawSplitterBorder(wxWindow *win,
344 wxDC& dc,
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345 const wxRect& rect,
346 int flags = 0)
2c0e6de1 347 { m_rendererNative.DrawSplitterBorder(win, dc, rect, flags); }
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348
349 virtual void DrawSplitterSash(wxWindow *win,
350 wxDC& dc,
351 const wxSize& size,
62dc9cb4 352 wxCoord position,
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353 wxOrientation orient,
354 int flags = 0)
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355 { m_rendererNative.DrawSplitterSash(win, dc, size,
356 position, orient, flags); }
b3208e11 357
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358 virtual void DrawComboBoxDropButton(wxWindow *win,
359 wxDC& dc,
360 const wxRect& rect,
361 int flags = 0)
362 { m_rendererNative.DrawComboBoxDropButton(win, dc, rect, flags); }
363
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364 virtual void DrawDropArrow(wxWindow *win,
365 wxDC& dc,
366 const wxRect& rect,
367 int flags = 0)
368 { m_rendererNative.DrawDropArrow(win, dc, rect, flags); }
b3208e11 369
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370 virtual void DrawCheckBox(wxWindow *win,
371 wxDC& dc,
372 const wxRect& rect,
373 int flags = 0 )
374 { m_rendererNative.DrawCheckBox( win, dc, rect, flags ); }
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375
376 virtual void DrawPushButton(wxWindow *win,
377 wxDC& dc,
378 const wxRect& rect,
379 int flags = 0 )
380 { m_rendererNative.DrawPushButton( win, dc, rect, flags ); }
381
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382 virtual void DrawItemSelectionRect(wxWindow *win,
383 wxDC& dc,
384 const wxRect& rect,
385 int flags = 0 )
386 { m_rendererNative.DrawItemSelectionRect( win, dc, rect, flags ); }
387
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388 virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0)
389 { m_rendererNative.DrawFocusRect( win, dc, rect, flags ); }
390
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391 virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win)
392 { return m_rendererNative.GetSplitterParams(win); }
b3208e11 393
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394 virtual wxRendererVersion GetVersion() const
395 { return m_rendererNative.GetVersion(); }
396
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397protected:
398 wxRendererNative& m_rendererNative;
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399
400 DECLARE_NO_COPY_CLASS(wxDelegateRendererNative)
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401};
402
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403// ----------------------------------------------------------------------------
404// inline functions implementation
405// ----------------------------------------------------------------------------
406
407#ifndef wxHAS_NATIVE_RENDERER
408
409// default native renderer is the generic one then
410/* static */ inline
411wxRendererNative& wxRendererNative::GetDefault()
412{
413 return GetGeneric();
414}
415
416#endif // !wxHAS_NATIVE_RENDERER
417
9c7f49f5 418#endif // _WX_RENDERER_H_