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1 ///////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk/renderer.cpp
3 // Purpose: implementation of wxRendererNative for wxGTK
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 20.07.2003
7 // RCS-ID: $Id$
8 // Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
9 // License: wxWindows licence
10 ///////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ----------------------------------------------------------------------------
17 // headers
18 // ----------------------------------------------------------------------------
19
20 // for compilers that support precompilation, includes "wx.h".
21 #include "wx/wxprec.h"
22
23 #ifdef __BORLANDC__
24 #pragma hdrstop
25 #endif
26
27 #include "wx/renderer.h"
28
29 #ifndef WX_PRECOMP
30 #include "wx/window.h"
31 #include "wx/dcclient.h"
32 #include "wx/settings.h"
33 #endif
34
35 #include <gtk/gtk.h>
36 #include "wx/gtk/win_gtk.h"
37
38 // ----------------------------------------------------------------------------
39 // wxRendererGTK: our wxRendererNative implementation
40 // ----------------------------------------------------------------------------
41
42 class WXDLLEXPORT wxRendererGTK : public wxDelegateRendererNative
43 {
44 public:
45 // draw the header control button (used by wxListCtrl)
46 virtual void DrawHeaderButton(wxWindow *win,
47 wxDC& dc,
48 const wxRect& rect,
49 int flags = 0,
50 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
51 wxHeaderButtonParams* params = NULL);
52
53 // draw the expanded/collapsed icon for a tree control item
54 virtual void DrawTreeItemButton(wxWindow *win,
55 wxDC& dc,
56 const wxRect& rect,
57 int flags = 0);
58
59 virtual void DrawSplitterBorder(wxWindow *win,
60 wxDC& dc,
61 const wxRect& rect,
62 int flags = 0);
63 virtual void DrawSplitterSash(wxWindow *win,
64 wxDC& dc,
65 const wxSize& size,
66 wxCoord position,
67 wxOrientation orient,
68 int flags = 0);
69
70 virtual void DrawComboBoxDropButton(wxWindow *win,
71 wxDC& dc,
72 const wxRect& rect,
73 int flags = 0);
74
75 virtual void DrawDropArrow(wxWindow *win,
76 wxDC& dc,
77 const wxRect& rect,
78 int flags = 0);
79
80 virtual void DrawCheckBox(wxWindow *win,
81 wxDC& dc,
82 const wxRect& rect,
83 int flags = 0);
84
85 virtual void DrawPushButton(wxWindow *win,
86 wxDC& dc,
87 const wxRect& rect,
88 int flags = 0);
89
90 virtual void DrawItemSelectionRect(wxWindow *win,
91 wxDC& dc,
92 const wxRect& rect,
93 int flags = 0);
94
95 virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
96
97 private:
98 // FIXME: shouldn't we destroy these windows somewhere?
99
100 // used by DrawHeaderButton and DrawPushButton
101 static GtkWidget *GetButtonWidget();
102
103 // used by DrawTreeItemButton()
104 static GtkWidget *GetTreeWidget();
105
106 // used by DrawCheckBox()
107 static GtkWidget *GetCheckButtonWidget();
108 };
109
110 // ============================================================================
111 // implementation
112 // ============================================================================
113
114 /* static */
115 wxRendererNative& wxRendererNative::GetDefault()
116 {
117 static wxRendererGTK s_rendererGTK;
118
119 return s_rendererGTK;
120 }
121
122 // ----------------------------------------------------------------------------
123 // helper functions
124 // ----------------------------------------------------------------------------
125
126 GtkWidget *
127 wxRendererGTK::GetButtonWidget()
128 {
129 static GtkWidget *s_button = NULL;
130 static GtkWidget *s_window = NULL;
131
132 if ( !s_button )
133 {
134 s_window = gtk_window_new( GTK_WINDOW_POPUP );
135 gtk_widget_realize( s_window );
136 s_button = gtk_button_new();
137 gtk_container_add( GTK_CONTAINER(s_window), s_button );
138 gtk_widget_realize( s_button );
139 }
140
141 return s_button;
142 }
143
144 GtkWidget *
145 wxRendererGTK::GetCheckButtonWidget()
146 {
147 static GtkWidget *s_button = NULL;
148 static GtkWidget *s_window = NULL;
149
150 if ( !s_button )
151 {
152 s_window = gtk_window_new( GTK_WINDOW_POPUP );
153 gtk_widget_realize( s_window );
154 s_button = gtk_check_button_new();
155 gtk_container_add( GTK_CONTAINER(s_window), s_button );
156 gtk_widget_realize( s_button );
157 }
158
159 return s_button;
160 }
161
162 GtkWidget *
163 wxRendererGTK::GetTreeWidget()
164 {
165 static GtkWidget *s_tree = NULL;
166 static GtkWidget *s_window = NULL;
167
168 if ( !s_tree )
169 {
170 s_tree = gtk_tree_view_new();
171 s_window = gtk_window_new( GTK_WINDOW_POPUP );
172 gtk_widget_realize( s_window );
173 gtk_container_add( GTK_CONTAINER(s_window), s_tree );
174 gtk_widget_realize( s_tree );
175 }
176
177 return s_tree;
178 }
179
180 // ----------------------------------------------------------------------------
181 // list/tree controls drawing
182 // ----------------------------------------------------------------------------
183
184 void
185 wxRendererGTK::DrawHeaderButton(wxWindow *win,
186 wxDC& dc,
187 const wxRect& rect,
188 int flags,
189 wxHeaderSortIconType sortArrow,
190 wxHeaderButtonParams* params)
191 {
192
193 GtkWidget *button = GetButtonWidget();
194
195 GdkWindow* gdk_window = dc.GetGDKWindow();
196 wxASSERT_MSG( gdk_window,
197 wxT("cannot use wxRendererNative on wxDC of this type") );
198
199 int x_diff = 0;
200 if (win->GetLayoutDirection() == wxLayout_RightToLeft)
201 x_diff = rect.width;
202
203 gtk_paint_box
204 (
205 button->style,
206 gdk_window,
207 flags & wxCONTROL_DISABLED ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL,
208 GTK_SHADOW_OUT,
209 NULL,
210 button,
211 "button",
212 dc.LogicalToDeviceX(rect.x) - x_diff, rect.y, rect.width, rect.height
213 );
214
215 DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params);
216 }
217
218 // draw a ">" or "v" button
219 void
220 wxRendererGTK::DrawTreeItemButton(wxWindow* win,
221 wxDC& dc, const wxRect& rect, int flags)
222 {
223 GtkWidget *tree = GetTreeWidget();
224
225 GdkWindow* gdk_window = dc.GetGDKWindow();
226 wxASSERT_MSG( gdk_window,
227 wxT("cannot use wxRendererNative on wxDC of this type") );
228
229 GtkStateType state;
230 if ( flags & wxCONTROL_CURRENT )
231 state = GTK_STATE_PRELIGHT;
232 else
233 state = GTK_STATE_NORMAL;
234
235 int x_diff = 0;
236 if (win->GetLayoutDirection() == wxLayout_RightToLeft)
237 x_diff = rect.width;
238
239 // VZ: I don't know how to get the size of the expander so as to centre it
240 // in the given rectangle, +2/3 below is just what looks good here...
241 gtk_paint_expander
242 (
243 tree->style,
244 gdk_window,
245 state,
246 NULL,
247 tree,
248 "treeview",
249 dc.LogicalToDeviceX(rect.x) + 6 - x_diff,
250 dc.LogicalToDeviceY(rect.y) + 3,
251 flags & wxCONTROL_EXPANDED ? GTK_EXPANDER_EXPANDED
252 : GTK_EXPANDER_COLLAPSED
253 );
254 }
255
256
257 // ----------------------------------------------------------------------------
258 // splitter sash drawing
259 // ----------------------------------------------------------------------------
260
261 static int GetGtkSplitterFullSize()
262 {
263 static GtkWidget *s_paned = NULL;
264 if (s_paned == NULL)
265 s_paned = gtk_vpaned_new();
266
267 gint handle_size;
268 gtk_widget_style_get (s_paned, "handle_size", &handle_size, NULL);
269
270 return handle_size;
271 }
272
273 wxSplitterRenderParams
274 wxRendererGTK::GetSplitterParams(const wxWindow *WXUNUSED(win))
275 {
276 // we don't draw any border, hence 0 for the second field
277 return wxSplitterRenderParams
278 (
279 GetGtkSplitterFullSize(),
280 0,
281 true // hot sensitive
282 );
283 }
284
285 void
286 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
287 wxDC& WXUNUSED(dc),
288 const wxRect& WXUNUSED(rect),
289 int WXUNUSED(flags))
290 {
291 // nothing to do
292 }
293
294 void
295 wxRendererGTK::DrawSplitterSash(wxWindow *win,
296 wxDC& dc,
297 const wxSize& size,
298 wxCoord position,
299 wxOrientation orient,
300 int flags)
301 {
302 if ( !win->m_wxwindow->window )
303 {
304 // window not realized yet
305 return;
306 }
307
308 GdkWindow* gdk_window = dc.GetGDKWindow();
309 wxASSERT_MSG( gdk_window,
310 wxT("cannot use wxRendererNative on wxDC of this type") );
311
312 wxCoord full_size = GetGtkSplitterFullSize();
313
314 // are we drawing vertical or horizontal splitter?
315 const bool isVert = orient == wxVERTICAL;
316
317 GdkRectangle rect;
318
319 if ( isVert )
320 {
321 int h = win->GetClientSize().GetHeight();
322
323 rect.x = position;
324 rect.y = 0;
325 rect.width = full_size;
326 rect.height = h;
327 }
328 else // horz
329 {
330 int w = win->GetClientSize().GetWidth();
331
332 rect.x = 0;
333 rect.y = position;
334 rect.height = full_size;
335 rect.width = w;
336 }
337
338 int x_diff = 0;
339 if (win->GetLayoutDirection() == wxLayout_RightToLeft)
340 x_diff = rect.width;
341
342 gtk_paint_handle
343 (
344 win->m_wxwindow->style,
345 gdk_window,
346 flags & wxCONTROL_CURRENT ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
347 GTK_SHADOW_NONE,
348 NULL /* no clipping */,
349 win->m_wxwindow,
350 "paned",
351 dc.LogicalToDeviceX(rect.x) - x_diff,
352 dc.LogicalToDeviceY(rect.y),
353 rect.width,
354 rect.height,
355 isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
356 );
357 }
358
359 void
360 wxRendererGTK::DrawDropArrow(wxWindow *WXUNUSED(win),
361 wxDC& dc,
362 const wxRect& rect,
363 int flags)
364 {
365 GtkWidget *button = GetButtonWidget();
366
367 // If we give GTK_PIZZA(win->m_wxwindow)->bin_window as
368 // a window for gtk_paint_xxx function, then it won't
369 // work for wxMemoryDC. So that is why we assume wxDC
370 // is wxWindowDC (wxClientDC, wxMemoryDC and wxPaintDC
371 // are derived from it) and use its m_window.
372 GdkWindow* gdk_window = dc.GetGDKWindow();
373 wxASSERT_MSG( gdk_window,
374 wxT("cannot use wxRendererNative on wxDC of this type") );
375
376 // draw arrow so that there is even space horizontally
377 // on both sides
378 int arrowX = rect.width/4 + 1;
379 int arrowWidth = rect.width - (arrowX*2);
380
381 // scale arrow's height accoording to the width
382 int arrowHeight = rect.width/3;
383 int arrowY = (rect.height-arrowHeight)/2 +
384 ((rect.height-arrowHeight) & 1);
385
386 GtkStateType state;
387
388 if ( flags & wxCONTROL_PRESSED )
389 state = GTK_STATE_ACTIVE;
390 else if ( flags & wxCONTROL_DISABLED )
391 state = GTK_STATE_INSENSITIVE;
392 else if ( flags & wxCONTROL_CURRENT )
393 state = GTK_STATE_PRELIGHT;
394 else
395 state = GTK_STATE_NORMAL;
396
397 // draw arrow on button
398 gtk_paint_arrow
399 (
400 button->style,
401 gdk_window,
402 state,
403 flags & wxCONTROL_PRESSED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
404 NULL,
405 button,
406 "arrow",
407 GTK_ARROW_DOWN,
408 FALSE,
409 rect.x + arrowX,
410 rect.y + arrowY,
411 arrowWidth,
412 arrowHeight
413 );
414 }
415
416 void
417 wxRendererGTK::DrawComboBoxDropButton(wxWindow *win,
418 wxDC& dc,
419 const wxRect& rect,
420 int flags)
421 {
422 DrawPushButton(win,dc,rect,flags);
423 DrawDropArrow(win,dc,rect);
424 }
425
426 void
427 wxRendererGTK::DrawCheckBox(wxWindow *WXUNUSED(win),
428 wxDC& dc,
429 const wxRect& rect,
430 int flags )
431 {
432 GtkWidget *button = GetCheckButtonWidget();
433
434 // for reason why we do this, see DrawDropArrow
435 GdkWindow* gdk_window = dc.GetGDKWindow();
436 wxASSERT_MSG( gdk_window,
437 wxT("cannot use wxRendererNative on wxDC of this type") );
438
439 GtkStateType state;
440
441 if ( flags & wxCONTROL_PRESSED )
442 state = GTK_STATE_ACTIVE;
443 else if ( flags & wxCONTROL_DISABLED )
444 state = GTK_STATE_INSENSITIVE;
445 else if ( flags & wxCONTROL_CURRENT )
446 state = GTK_STATE_PRELIGHT;
447 else
448 state = GTK_STATE_NORMAL;
449
450 gtk_paint_check
451 (
452 button->style,
453 gdk_window,
454 state,
455 flags & wxCONTROL_CHECKED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
456 NULL,
457 button,
458 "cellcheck",
459 dc.LogicalToDeviceX(rect.x)+2,
460 dc.LogicalToDeviceY(rect.y)+3,
461 13, 13
462 );
463 }
464
465 void
466 wxRendererGTK::DrawPushButton(wxWindow *WXUNUSED(win),
467 wxDC& dc,
468 const wxRect& rect,
469 int flags)
470 {
471 GtkWidget *button = GetButtonWidget();
472
473 // for reason why we do this, see DrawDropArrow
474 GdkWindow* gdk_window = dc.GetGDKWindow();
475 wxASSERT_MSG( gdk_window,
476 wxT("cannot use wxRendererNative on wxDC of this type") );
477
478 // draw button
479 GtkStateType state;
480
481 if ( flags & wxCONTROL_PRESSED )
482 state = GTK_STATE_ACTIVE;
483 else if ( flags & wxCONTROL_DISABLED )
484 state = GTK_STATE_INSENSITIVE;
485 else if ( flags & wxCONTROL_CURRENT )
486 state = GTK_STATE_PRELIGHT;
487 else
488 state = GTK_STATE_NORMAL;
489
490 gtk_paint_box
491 (
492 button->style,
493 gdk_window,
494 state,
495 flags & wxCONTROL_PRESSED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
496 NULL,
497 button,
498 "button",
499 rect.x, rect.y, rect.width, rect.height
500 );
501 }
502
503 void
504 wxRendererGTK::DrawItemSelectionRect(wxWindow *win,
505 wxDC& dc,
506 const wxRect& rect,
507 int flags )
508 {
509 GdkWindow* gdk_window = dc.GetGDKWindow();
510 wxASSERT_MSG( gdk_window,
511 wxT("cannot use wxRendererNative on wxDC of this type") );
512
513 GtkStateType state;
514 if (flags & wxCONTROL_SELECTED)
515 {
516 if (flags & wxCONTROL_FOCUSED)
517 state = GTK_STATE_SELECTED;
518 else
519 state = GTK_STATE_INSENSITIVE;
520
521 gtk_paint_flat_box( win->m_wxwindow->style,
522 gdk_window,
523 state,
524 GTK_SHADOW_NONE,
525 NULL,
526 win->m_wxwindow,
527 "treeview",
528 dc.LogicalToDeviceX(rect.x),
529 dc.LogicalToDeviceY(rect.y),
530 rect.width,
531 rect.height );
532 }
533
534 if (flags & wxCONTROL_CURRENT)
535 {
536 dc.SetPen( *wxBLACK_PEN );
537 dc.SetBrush( *wxTRANSPARENT_BRUSH );
538 dc.DrawRectangle( rect );
539 }
540 }