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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
e8759560 31#include "wx/gdicmn.h" // for wxPoint, wxSize
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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
ac9e3f1f 38#if defined(__WXMSW__) || ( defined(__WXMAC__) && wxOSX_USE_COCOA_OR_CARBON ) || 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
53a2db12 78struct WXDLLIMPEXP_CORE wxSplitterRenderParams
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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
53a2db12 98struct WXDLLIMPEXP_CORE wxHeaderButtonParams
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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{
80752b57 115 wxHDR_SORT_ICON_NONE, // Header button has no sort arrow
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116 wxHDR_SORT_ICON_UP, // Header button an up sort arrow icon
117 wxHDR_SORT_ICON_DOWN // Header button a down sort arrow icon
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118};
119
4b94ddc4 120
04857cb7 121// wxRendererNative interface version
53a2db12 122struct WXDLLIMPEXP_CORE wxRendererVersion
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123{
124 wxRendererVersion(int version_, int age_) : version(version_), age(age_) { }
125
126 // default copy ctor, assignment operator and dtor are ok
127
128 // the current version and age of wxRendererNative interface: different
129 // versions are incompatible (in both ways) while the ages inside the same
130 // version are upwards compatible, i.e. the version of the renderer must
131 // match the version of the main program exactly while the age may be
132 // highergreater or equal to it
133 //
134 // NB: don't forget to increment age after adding any new virtual function!
135 enum
136 {
137 Current_Version = 1,
138 Current_Age = 5
139 };
140
141
142 // check if the given version is compatible with the current one
143 static bool IsCompatible(const wxRendererVersion& ver)
144 {
145 return ver.version == Current_Version && ver.age >= Current_Age;
146 }
147
148 const int version;
149 const int age;
150};
151
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152// ----------------------------------------------------------------------------
153// wxRendererNative: abstracts drawing methods needed by the native controls
154// ----------------------------------------------------------------------------
155
53a2db12 156class WXDLLIMPEXP_CORE wxRendererNative
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157{
158public:
159 // drawing functions
160 // -----------------
161
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162 // draw the header control button (used by wxListCtrl) Returns optimal
163 // width for the label contents.
164 virtual int DrawHeaderButton(wxWindow *win,
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165 wxDC& dc,
166 const wxRect& rect,
4b94ddc4 167 int flags = 0,
80752b57 168 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
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169 wxHeaderButtonParams* params=NULL) = 0;
170
171
172 // Draw the contents of a header control button (label, sort arrows, etc.)
173 // Normally only called by DrawHeaderButton.
c97c9952 174 virtual int DrawHeaderButtonContents(wxWindow *win,
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175 wxDC& dc,
176 const wxRect& rect,
177 int flags = 0,
80752b57 178 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
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179 wxHeaderButtonParams* params=NULL) = 0;
180
181 // Returns the default height of a header button, either a fixed platform
182 // height if available, or a generic height based on the window's font.
183 virtual int GetHeaderButtonHeight(wxWindow *win) = 0;
184
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185
186 // draw the expanded/collapsed icon for a tree control item
187 virtual void DrawTreeItemButton(wxWindow *win,
188 wxDC& dc,
189 const wxRect& rect,
190 int flags = 0) = 0;
191
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192 // draw the border for sash window: this border must be such that the sash
193 // drawn by DrawSash() blends into it well
194 virtual void DrawSplitterBorder(wxWindow *win,
195 wxDC& dc,
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196 const wxRect& rect,
197 int flags = 0) = 0;
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198
199 // draw a (vertical) sash
200 virtual void DrawSplitterSash(wxWindow *win,
201 wxDC& dc,
202 const wxSize& size,
62dc9cb4 203 wxCoord position,
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204 wxOrientation orient,
205 int flags = 0) = 0;
b3208e11 206
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207 // draw a combobox dropdown button
208 //
4c85ab75 209 // flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
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210 virtual void DrawComboBoxDropButton(wxWindow *win,
211 wxDC& dc,
212 const wxRect& rect,
213 int flags = 0) = 0;
214
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215 // draw a dropdown arrow
216 //
217 // flags may use wxCONTROL_PRESSED and wxCONTROL_CURRENT
218 virtual void DrawDropArrow(wxWindow *win,
219 wxDC& dc,
220 const wxRect& rect,
221 int flags = 0) = 0;
b3208e11 222
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223 // draw check button
224 //
225 // flags may use wxCONTROL_CHECKED, wxCONTROL_UNDETERMINED and wxCONTROL_CURRENT
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226 virtual void DrawCheckBox(wxWindow *win,
227 wxDC& dc,
228 const wxRect& rect,
229 int flags = 0) = 0;
2209baae 230
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231 // Returns the default size of a check box.
232 virtual wxSize GetCheckBoxSize(wxWindow *win) = 0;
233
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234 // draw blank button
235 //
236 // flags may use wxCONTROL_PRESSED, wxCONTROL_CURRENT and wxCONTROL_ISDEFAULT
237 virtual void DrawPushButton(wxWindow *win,
238 wxDC& dc,
239 const wxRect& rect,
240 int flags = 0) = 0;
241
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242 // draw rectangle indicating that an item in e.g. a list control
243 // has been selected or focused
244 //
0856300f 245 // flags may use
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246 // wxCONTROL_SELECTED (item is selected, e.g. draw background)
247 // wxCONTROL_CURRENT (item is the current item, e.g. dotted border)
248 // wxCONTROL_FOCUSED (the whole control has focus, e.g. blue background vs. grey otherwise)
249 virtual void DrawItemSelectionRect(wxWindow *win,
250 wxDC& dc,
251 const wxRect& rect,
252 int flags = 0) = 0;
253
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254 // draw the focus rectangle around the label contained in the given rect
255 //
256 // only wxCONTROL_SELECTED makes sense in flags here
257 virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0) = 0;
258
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259 // geometry functions
260 // ------------------
261
262 // get the splitter parameters: the x field of the returned point is the
263 // sash width and the y field is the border width
af99040c 264 virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win) = 0;
b3208e11 265
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266
267 // pseudo constructors
268 // -------------------
269
270 // return the currently used renderer
271 static wxRendererNative& Get();
272
273 // return the generic implementation of the renderer
274 static wxRendererNative& GetGeneric();
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275
276 // return the default (native) implementation for this platform
277 static wxRendererNative& GetDefault();
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278
279
280 // changing the global renderer
281 // ----------------------------
282
283#if wxUSE_DYNLIB_CLASS
284 // load the renderer from the specified DLL, the returned pointer must be
285 // deleted by caller if not NULL when it is not used any more
286 static wxRendererNative *Load(const wxString& name);
287#endif // wxUSE_DYNLIB_CLASS
288
289 // set the renderer to use, passing NULL reverts to using the default
290 // renderer
291 //
292 // return the previous renderer used with Set() or NULL if none
293 static wxRendererNative *Set(wxRendererNative *renderer);
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294
295
296 // miscellaneous stuff
297 // -------------------
298
299 // this function is used for version checking: Load() refuses to load any
300 // DLLs implementing an older or incompatible version; it should be
301 // implemented simply by returning wxRendererVersion::Current_XXX values
302 virtual wxRendererVersion GetVersion() const = 0;
303
304 // virtual dtor for any base class
305 virtual ~wxRendererNative();
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306};
307
308// ----------------------------------------------------------------------------
309// wxDelegateRendererNative: allows reuse of renderers code
310// ----------------------------------------------------------------------------
311
53a2db12 312class WXDLLIMPEXP_CORE wxDelegateRendererNative : public wxRendererNative
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313{
314public:
315 wxDelegateRendererNative()
316 : m_rendererNative(GetGeneric()) { }
317
318 wxDelegateRendererNative(wxRendererNative& rendererNative)
319 : m_rendererNative(rendererNative) { }
320
321
c97c9952 322 virtual int DrawHeaderButton(wxWindow *win,
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323 wxDC& dc,
324 const wxRect& rect,
4b94ddc4 325 int flags = 0,
80752b57 326 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
4b94ddc4 327 wxHeaderButtonParams* params = NULL)
c97c9952 328 { return m_rendererNative.DrawHeaderButton(win, dc, rect, flags, sortArrow, params); }
0856300f 329
c97c9952 330 virtual int DrawHeaderButtonContents(wxWindow *win,
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331 wxDC& dc,
332 const wxRect& rect,
333 int flags = 0,
80752b57 334 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
4b94ddc4 335 wxHeaderButtonParams* params = NULL)
c97c9952 336 { return m_rendererNative.DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params); }
0856300f 337
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338 virtual int GetHeaderButtonHeight(wxWindow *win)
339 { return m_rendererNative.GetHeaderButtonHeight(win); }
b3208e11 340
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341 virtual void DrawTreeItemButton(wxWindow *win,
342 wxDC& dc,
343 const wxRect& rect,
344 int flags = 0)
345 { m_rendererNative.DrawTreeItemButton(win, dc, rect, flags); }
346
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347 virtual void DrawSplitterBorder(wxWindow *win,
348 wxDC& dc,
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349 const wxRect& rect,
350 int flags = 0)
2c0e6de1 351 { m_rendererNative.DrawSplitterBorder(win, dc, rect, flags); }
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352
353 virtual void DrawSplitterSash(wxWindow *win,
354 wxDC& dc,
355 const wxSize& size,
62dc9cb4 356 wxCoord position,
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357 wxOrientation orient,
358 int flags = 0)
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359 { m_rendererNative.DrawSplitterSash(win, dc, size,
360 position, orient, flags); }
b3208e11 361
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362 virtual void DrawComboBoxDropButton(wxWindow *win,
363 wxDC& dc,
364 const wxRect& rect,
365 int flags = 0)
366 { m_rendererNative.DrawComboBoxDropButton(win, dc, rect, flags); }
367
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368 virtual void DrawDropArrow(wxWindow *win,
369 wxDC& dc,
370 const wxRect& rect,
371 int flags = 0)
372 { m_rendererNative.DrawDropArrow(win, dc, rect, flags); }
b3208e11 373
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374 virtual void DrawCheckBox(wxWindow *win,
375 wxDC& dc,
376 const wxRect& rect,
377 int flags = 0 )
378 { m_rendererNative.DrawCheckBox( win, dc, rect, flags ); }
2209baae 379
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380 virtual wxSize GetCheckBoxSize(wxWindow *win)
381 { return m_rendererNative.GetCheckBoxSize(win); }
382
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383 virtual void DrawPushButton(wxWindow *win,
384 wxDC& dc,
385 const wxRect& rect,
386 int flags = 0 )
387 { m_rendererNative.DrawPushButton( win, dc, rect, flags ); }
388
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389 virtual void DrawItemSelectionRect(wxWindow *win,
390 wxDC& dc,
391 const wxRect& rect,
392 int flags = 0 )
393 { m_rendererNative.DrawItemSelectionRect( win, dc, rect, flags ); }
394
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395 virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0)
396 { m_rendererNative.DrawFocusRect( win, dc, rect, flags ); }
397
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398 virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win)
399 { return m_rendererNative.GetSplitterParams(win); }
b3208e11 400
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401 virtual wxRendererVersion GetVersion() const
402 { return m_rendererNative.GetVersion(); }
403
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404protected:
405 wxRendererNative& m_rendererNative;
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406
407 DECLARE_NO_COPY_CLASS(wxDelegateRendererNative)
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408};
409
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410// ----------------------------------------------------------------------------
411// inline functions implementation
412// ----------------------------------------------------------------------------
413
414#ifndef wxHAS_NATIVE_RENDERER
415
416// default native renderer is the generic one then
417/* static */ inline
418wxRendererNative& wxRendererNative::GetDefault()
419{
420 return GetGeneric();
421}
422
423#endif // !wxHAS_NATIVE_RENDERER
424
9c7f49f5 425#endif // _WX_RENDERER_H_