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[wxWidgets.git] / src / gtk / renderer.cpp
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 // Licence: 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 #include "wx/module.h"
34 #endif
35
36 #include "wx/dcgraph.h"
37 #include "wx/gtk/dc.h"
38 #include "wx/gtk/private.h"
39
40 #include <gtk/gtk.h>
41
42 // ----------------------------------------------------------------------------
43 // wxRendererGTK: our wxRendererNative implementation
44 // ----------------------------------------------------------------------------
45
46 class WXDLLEXPORT wxRendererGTK : public wxDelegateRendererNative
47 {
48 public:
49 // draw the header control button (used by wxListCtrl)
50 virtual int DrawHeaderButton(wxWindow *win,
51 wxDC& dc,
52 const wxRect& rect,
53 int flags = 0,
54 wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
55 wxHeaderButtonParams* params = NULL);
56
57 virtual int GetHeaderButtonHeight(wxWindow *win);
58
59
60 // draw the expanded/collapsed icon for a tree control item
61 virtual void DrawTreeItemButton(wxWindow *win,
62 wxDC& dc,
63 const wxRect& rect,
64 int flags = 0);
65
66 virtual void DrawSplitterBorder(wxWindow *win,
67 wxDC& dc,
68 const wxRect& rect,
69 int flags = 0);
70 virtual void DrawSplitterSash(wxWindow *win,
71 wxDC& dc,
72 const wxSize& size,
73 wxCoord position,
74 wxOrientation orient,
75 int flags = 0);
76
77 virtual void DrawComboBoxDropButton(wxWindow *win,
78 wxDC& dc,
79 const wxRect& rect,
80 int flags = 0);
81
82 virtual void DrawDropArrow(wxWindow *win,
83 wxDC& dc,
84 const wxRect& rect,
85 int flags = 0);
86
87 virtual void DrawCheckBox(wxWindow *win,
88 wxDC& dc,
89 const wxRect& rect,
90 int flags = 0);
91
92 virtual void DrawPushButton(wxWindow *win,
93 wxDC& dc,
94 const wxRect& rect,
95 int flags = 0);
96
97 virtual void DrawItemSelectionRect(wxWindow *win,
98 wxDC& dc,
99 const wxRect& rect,
100 int flags = 0);
101
102 virtual void DrawChoice(wxWindow* win,
103 wxDC& dc,
104 const wxRect& rect,
105 int flags=0);
106
107 virtual void DrawComboBox(wxWindow* win,
108 wxDC& dc,
109 const wxRect& rect,
110 int flags=0);
111
112 virtual void DrawTextCtrl(wxWindow* win,
113 wxDC& dc,
114 const wxRect& rect,
115 int flags=0);
116
117 virtual void DrawRadioBitmap(wxWindow* win,
118 wxDC& dc,
119 const wxRect& rect,
120 int flags=0);
121
122 virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0);
123
124 virtual wxSize GetCheckBoxSize(wxWindow *win);
125
126 virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
127 };
128
129 // ============================================================================
130 // implementation
131 // ============================================================================
132
133 /* static */
134 wxRendererNative& wxRendererNative::GetDefault()
135 {
136 static wxRendererGTK s_rendererGTK;
137
138 return s_rendererGTK;
139 }
140
141 static GdkWindow* wxGetGdkWindowForDC(wxWindow* win, wxDC& dc)
142 {
143 GdkWindow* gdk_window = NULL;
144
145 #if wxUSE_GRAPHICS_CONTEXT
146 if ( dc.IsKindOf( CLASSINFO(wxGCDC) ) )
147 gdk_window = win->GTKGetDrawingWindow();
148 else
149 #endif
150 {
151 #if wxUSE_NEW_DC
152 wxDCImpl *impl = dc.GetImpl();
153 wxGTKDCImpl *gtk_impl = wxDynamicCast( impl, wxGTKDCImpl );
154 if (gtk_impl)
155 gdk_window = gtk_impl->GetGDKWindow();
156 #else
157 gdk_window = dc.GetGDKWindow();
158 #endif
159 }
160
161 #if !wxUSE_GRAPHICS_CONTEXT
162 wxUnusedVar(win);
163 #endif
164
165 return gdk_window;
166 }
167
168 // ----------------------------------------------------------------------------
169 // list/tree controls drawing
170 // ----------------------------------------------------------------------------
171
172 int
173 wxRendererGTK::DrawHeaderButton(wxWindow *win,
174 wxDC& dc,
175 const wxRect& rect,
176 int flags,
177 wxHeaderSortIconType sortArrow,
178 wxHeaderButtonParams* params)
179 {
180
181 GtkWidget *button = wxGTKPrivate::GetHeaderButtonWidget();
182 if (flags & wxCONTROL_SPECIAL)
183 button = wxGTKPrivate::GetHeaderButtonWidgetFirst();
184 if (flags & wxCONTROL_DIRTY)
185 button = wxGTKPrivate::GetHeaderButtonWidgetLast();
186
187 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
188 wxASSERT_MSG( gdk_window,
189 wxT("cannot use wxRendererNative on wxDC of this type") );
190
191 int x_diff = 0;
192 if (win->GetLayoutDirection() == wxLayout_RightToLeft)
193 x_diff = rect.width;
194
195 GtkStateType state = GTK_STATE_NORMAL;
196 if (flags & wxCONTROL_DISABLED)
197 state = GTK_STATE_INSENSITIVE;
198 else
199 {
200 if (flags & wxCONTROL_CURRENT)
201 state = GTK_STATE_PRELIGHT;
202 }
203
204 gtk_paint_box
205 (
206 button->style,
207 gdk_window,
208 state,
209 GTK_SHADOW_OUT,
210 NULL,
211 button,
212 "button",
213 dc.LogicalToDeviceX(rect.x) - x_diff, rect.y, rect.width, rect.height
214 );
215
216 return DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params);
217 }
218
219 int wxRendererGTK::GetHeaderButtonHeight(wxWindow *WXUNUSED(win))
220 {
221 GtkWidget *button = wxGTKPrivate::GetHeaderButtonWidget();
222
223 GtkRequisition req;
224 GTK_WIDGET_GET_CLASS(button)->size_request(button, &req);
225
226 return req.height;
227 }
228
229
230 // draw a ">" or "v" button
231 void
232 wxRendererGTK::DrawTreeItemButton(wxWindow* win,
233 wxDC& dc, const wxRect& rect, int flags)
234 {
235 GtkWidget *tree = wxGTKPrivate::GetTreeWidget();
236
237 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
238 wxASSERT_MSG( gdk_window,
239 wxT("cannot use wxRendererNative on wxDC of this type") );
240
241 GtkStateType state;
242 if ( flags & wxCONTROL_CURRENT )
243 state = GTK_STATE_PRELIGHT;
244 else
245 state = GTK_STATE_NORMAL;
246
247 int x_diff = 0;
248 if (win->GetLayoutDirection() == wxLayout_RightToLeft)
249 x_diff = rect.width;
250
251 // VZ: I don't know how to get the size of the expander so as to centre it
252 // in the given rectangle, +2/3 below is just what looks good here...
253 gtk_paint_expander
254 (
255 tree->style,
256 gdk_window,
257 state,
258 NULL,
259 tree,
260 "treeview",
261 dc.LogicalToDeviceX(rect.x) + 6 - x_diff,
262 dc.LogicalToDeviceY(rect.y) + 3,
263 flags & wxCONTROL_EXPANDED ? GTK_EXPANDER_EXPANDED
264 : GTK_EXPANDER_COLLAPSED
265 );
266 }
267
268
269 // ----------------------------------------------------------------------------
270 // splitter sash drawing
271 // ----------------------------------------------------------------------------
272
273 static int GetGtkSplitterFullSize(GtkWidget* widget)
274 {
275 gint handle_size;
276 gtk_widget_style_get(widget, "handle_size", &handle_size, NULL);
277
278 return handle_size;
279 }
280
281 wxSplitterRenderParams
282 wxRendererGTK::GetSplitterParams(const wxWindow *WXUNUSED(win))
283 {
284 // we don't draw any border, hence 0 for the second field
285 return wxSplitterRenderParams
286 (
287 GetGtkSplitterFullSize(wxGTKPrivate::GetSplitterWidget()),
288 0,
289 true // hot sensitive
290 );
291 }
292
293 void
294 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
295 wxDC& WXUNUSED(dc),
296 const wxRect& WXUNUSED(rect),
297 int WXUNUSED(flags))
298 {
299 // nothing to do
300 }
301
302 void
303 wxRendererGTK::DrawSplitterSash(wxWindow* win,
304 wxDC& dc,
305 const wxSize& size,
306 wxCoord position,
307 wxOrientation orient,
308 int flags)
309 {
310 if ( !win->m_wxwindow->window )
311 {
312 // window not realized yet
313 return;
314 }
315
316 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
317 wxASSERT_MSG( gdk_window,
318 wxT("cannot use wxRendererNative on wxDC of this type") );
319
320 wxCoord full_size = GetGtkSplitterFullSize(wxGTKPrivate::GetSplitterWidget());
321
322 // are we drawing vertical or horizontal splitter?
323 const bool isVert = orient == wxVERTICAL;
324
325 GdkRectangle rect;
326
327 if ( isVert )
328 {
329 rect.x = position;
330 rect.y = 0;
331 rect.width = full_size;
332 rect.height = size.y;
333 }
334 else // horz
335 {
336 rect.x = 0;
337 rect.y = position;
338 rect.height = full_size;
339 rect.width = size.x;
340 }
341
342 int x_diff = 0;
343 if (win->GetLayoutDirection() == wxLayout_RightToLeft)
344 x_diff = rect.width;
345
346 gtk_paint_handle
347 (
348 win->m_wxwindow->style,
349 gdk_window,
350 flags & wxCONTROL_CURRENT ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
351 GTK_SHADOW_NONE,
352 NULL /* no clipping */,
353 win->m_wxwindow,
354 "paned",
355 dc.LogicalToDeviceX(rect.x) - x_diff,
356 dc.LogicalToDeviceY(rect.y),
357 rect.width,
358 rect.height,
359 isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
360 );
361 }
362
363 void
364 wxRendererGTK::DrawDropArrow(wxWindow* win,
365 wxDC& dc,
366 const wxRect& rect,
367 int flags)
368 {
369 GtkWidget *button = wxGTKPrivate::GetButtonWidget();
370
371 // If we give WX_PIZZA(win->m_wxwindow)->bin_window as
372 // a window for gtk_paint_xxx function, then it won't
373 // work for wxMemoryDC. So that is why we assume wxDC
374 // is wxWindowDC (wxClientDC, wxMemoryDC and wxPaintDC
375 // are derived from it) and use its m_window.
376 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
377 wxASSERT_MSG( gdk_window,
378 wxT("cannot use wxRendererNative on wxDC of this type") );
379
380 // draw arrow so that there is even space horizontally
381 // on both sides
382 int arrowX = rect.width/4 + 1;
383 int arrowWidth = rect.width - (arrowX*2);
384
385 // scale arrow's height accoording to the width
386 int arrowHeight = rect.width/3;
387 int arrowY = (rect.height-arrowHeight)/2 +
388 ((rect.height-arrowHeight) & 1);
389
390 GtkStateType state;
391
392 if ( flags & wxCONTROL_PRESSED )
393 state = GTK_STATE_ACTIVE;
394 else if ( flags & wxCONTROL_DISABLED )
395 state = GTK_STATE_INSENSITIVE;
396 else if ( flags & wxCONTROL_CURRENT )
397 state = GTK_STATE_PRELIGHT;
398 else
399 state = GTK_STATE_NORMAL;
400
401 // draw arrow on button
402 gtk_paint_arrow
403 (
404 button->style,
405 gdk_window,
406 state,
407 flags & wxCONTROL_PRESSED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
408 NULL,
409 button,
410 "arrow",
411 GTK_ARROW_DOWN,
412 FALSE,
413 rect.x + arrowX,
414 rect.y + arrowY,
415 arrowWidth,
416 arrowHeight
417 );
418 }
419
420 void
421 wxRendererGTK::DrawComboBoxDropButton(wxWindow *win,
422 wxDC& dc,
423 const wxRect& rect,
424 int flags)
425 {
426 DrawPushButton(win,dc,rect,flags);
427 DrawDropArrow(win,dc,rect);
428 }
429
430 wxSize
431 wxRendererGTK::GetCheckBoxSize(wxWindow *WXUNUSED(win))
432 {
433 gint indicator_size, indicator_spacing;
434 gtk_widget_style_get(wxGTKPrivate::GetCheckButtonWidget(),
435 "indicator_size", &indicator_size,
436 "indicator_spacing", &indicator_spacing,
437 NULL);
438
439 int size = indicator_size + indicator_spacing * 2;
440 return wxSize(size, size);
441 }
442
443 void
444 wxRendererGTK::DrawCheckBox(wxWindow* win,
445 wxDC& dc,
446 const wxRect& rect,
447 int flags )
448 {
449 GtkWidget *button = wxGTKPrivate::GetCheckButtonWidget();
450
451 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
452 wxASSERT_MSG( gdk_window,
453 wxT("cannot use wxRendererNative on wxDC of this type") );
454
455 gint indicator_size, indicator_spacing;
456 gtk_widget_style_get(button,
457 "indicator_size", &indicator_size,
458 "indicator_spacing", &indicator_spacing,
459 NULL);
460
461 GtkStateType state;
462
463 if ( flags & wxCONTROL_PRESSED )
464 state = GTK_STATE_ACTIVE;
465 else if ( flags & wxCONTROL_DISABLED )
466 state = GTK_STATE_INSENSITIVE;
467 else if ( flags & wxCONTROL_CURRENT )
468 state = GTK_STATE_PRELIGHT;
469 else
470 state = GTK_STATE_NORMAL;
471
472 gtk_paint_check
473 (
474 button->style,
475 gdk_window,
476 state,
477 flags & wxCONTROL_CHECKED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
478 NULL,
479 button,
480 "cellcheck",
481 dc.LogicalToDeviceX(rect.x) + indicator_spacing,
482 dc.LogicalToDeviceY(rect.y) + indicator_spacing,
483 indicator_size, indicator_size
484 );
485 }
486
487 void
488 wxRendererGTK::DrawPushButton(wxWindow* win,
489 wxDC& dc,
490 const wxRect& rect,
491 int flags)
492 {
493 GtkWidget *button = wxGTKPrivate::GetButtonWidget();
494
495 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
496 wxASSERT_MSG( gdk_window,
497 wxT("cannot use wxRendererNative on wxDC of this type") );
498
499 // draw button
500 GtkStateType state;
501
502 if ( flags & wxCONTROL_PRESSED )
503 state = GTK_STATE_ACTIVE;
504 else if ( flags & wxCONTROL_DISABLED )
505 state = GTK_STATE_INSENSITIVE;
506 else if ( flags & wxCONTROL_CURRENT )
507 state = GTK_STATE_PRELIGHT;
508 else
509 state = GTK_STATE_NORMAL;
510
511 gtk_paint_box
512 (
513 button->style,
514 gdk_window,
515 state,
516 flags & wxCONTROL_PRESSED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
517 NULL,
518 button,
519 "button",
520 dc.LogicalToDeviceX(rect.x),
521 dc.LogicalToDeviceY(rect.y),
522 rect.width,
523 rect.height
524 );
525 }
526
527 void
528 wxRendererGTK::DrawItemSelectionRect(wxWindow* win,
529 wxDC& dc,
530 const wxRect& rect,
531 int flags )
532 {
533 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
534 wxASSERT_MSG( gdk_window,
535 wxT("cannot use wxRendererNative on wxDC of this type") );
536
537 if (flags & wxCONTROL_SELECTED)
538 {
539 int x_diff = 0;
540 if (win->GetLayoutDirection() == wxLayout_RightToLeft)
541 x_diff = rect.width;
542
543 // the wxCONTROL_FOCUSED state is deduced
544 // directly from the m_wxwindow by GTK+
545 gtk_paint_flat_box(wxGTKPrivate::GetTreeWidget()->style,
546 gdk_window,
547 GTK_STATE_SELECTED,
548 GTK_SHADOW_NONE,
549 NULL,
550 win->m_wxwindow,
551 "cell_even",
552 dc.LogicalToDeviceX(rect.x) - x_diff,
553 dc.LogicalToDeviceY(rect.y),
554 rect.width,
555 rect.height );
556 }
557
558 if ((flags & wxCONTROL_CURRENT) && (flags & wxCONTROL_FOCUSED))
559 DrawFocusRect(win, dc, rect, flags);
560 }
561
562 void wxRendererGTK::DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
563 {
564 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
565 wxASSERT_MSG( gdk_window,
566 wxT("cannot use wxRendererNative on wxDC of this type") );
567
568 GtkStateType state;
569 if (flags & wxCONTROL_SELECTED)
570 state = GTK_STATE_SELECTED;
571 else
572 state = GTK_STATE_NORMAL;
573
574 gtk_paint_focus( win->m_widget->style,
575 gdk_window,
576 state,
577 NULL,
578 win->m_wxwindow,
579 NULL,
580 dc.LogicalToDeviceX(rect.x),
581 dc.LogicalToDeviceY(rect.y),
582 rect.width,
583 rect.height );
584 }
585
586 // Uses the theme to draw the border and fill for something like a wxTextCtrl
587 void wxRendererGTK::DrawTextCtrl(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
588 {
589 GtkWidget *entry = wxGTKPrivate::GetTextEntryWidget();
590
591 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
592
593 GtkStateType state = GTK_STATE_NORMAL;
594 if ( flags & wxCONTROL_DISABLED )
595 state = GTK_STATE_INSENSITIVE;
596
597 if (flags & wxCONTROL_CURRENT )
598 GTK_WIDGET_SET_FLAGS( entry, GTK_HAS_FOCUS );
599 else
600 GTK_WIDGET_UNSET_FLAGS( entry, GTK_HAS_FOCUS );
601
602 gtk_paint_shadow
603 (
604 entry->style,
605 gdk_window,
606 state,
607 GTK_SHADOW_OUT,
608 NULL,
609 entry,
610 "entry",
611 dc.LogicalToDeviceX(rect.x),
612 dc.LogicalToDeviceY(rect.y),
613 rect.width,
614 rect.height
615 );
616 }
617
618 // Draw the equivallent of a wxComboBox
619 void wxRendererGTK::DrawComboBox(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
620 {
621 GtkWidget *combo = wxGTKPrivate::GetComboBoxWidget();
622
623 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
624
625 GtkStateType state = GTK_STATE_NORMAL;
626 if ( flags & wxCONTROL_DISABLED )
627 state = GTK_STATE_INSENSITIVE;
628
629 if (flags & wxCONTROL_CURRENT )
630 GTK_WIDGET_SET_FLAGS( combo, GTK_HAS_FOCUS );
631 else
632 GTK_WIDGET_UNSET_FLAGS( combo, GTK_HAS_FOCUS );
633
634 gtk_paint_shadow
635 (
636 combo->style,
637 gdk_window,
638 state,
639 GTK_SHADOW_OUT,
640 NULL,
641 combo,
642 "combobox",
643 dc.LogicalToDeviceX(rect.x),
644 dc.LogicalToDeviceY(rect.y),
645 rect.width,
646 rect.height
647 );
648
649 wxRect r = rect;
650 int extent = rect.height / 2;
651 r.x += rect.width - extent - extent/2;
652 r.y += extent/2;
653 r.width = extent;
654 r.height = extent;
655
656 gtk_paint_arrow
657 (
658 combo->style,
659 gdk_window,
660 state,
661 GTK_SHADOW_OUT,
662 NULL,
663 combo,
664 "arrow",
665 GTK_ARROW_DOWN,
666 TRUE,
667 dc.LogicalToDeviceX(r.x),
668 dc.LogicalToDeviceY(r.y),
669 r.width,
670 r.height
671 );
672
673 r = rect;
674 r.x += rect.width - 2*extent;
675 r.width = 2;
676
677 gtk_paint_box
678 (
679 combo->style,
680 gdk_window,
681 state,
682 GTK_SHADOW_ETCHED_OUT,
683 NULL,
684 combo,
685 "vseparator",
686 dc.LogicalToDeviceX(r.x),
687 dc.LogicalToDeviceY(r.y+1),
688 r.width,
689 r.height-2
690 );
691 }
692
693
694 void wxRendererGTK::DrawChoice(wxWindow* win, wxDC& dc,
695 const wxRect& rect, int flags)
696 {
697 DrawComboBox( win, dc, rect, flags );
698 }
699
700
701 // Draw a themed radio button
702 void wxRendererGTK::DrawRadioBitmap(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
703 {
704 GtkWidget *button = wxGTKPrivate::GetRadioButtonWidget();
705
706 GdkWindow* gdk_window = wxGetGdkWindowForDC(win, dc);
707
708 GtkShadowType shadow_type = GTK_SHADOW_OUT;
709 if ( flags & wxCONTROL_CHECKED )
710 shadow_type = GTK_SHADOW_IN;
711 else if ( flags & wxCONTROL_UNDETERMINED )
712 shadow_type = GTK_SHADOW_ETCHED_IN;
713
714 GtkStateType state = GTK_STATE_NORMAL;
715 if ( flags & wxCONTROL_DISABLED )
716 state = GTK_STATE_INSENSITIVE;
717 if ( flags & wxCONTROL_PRESSED )
718 state = GTK_STATE_ACTIVE;
719 /*
720 Don't know when to set this
721 state_type = GTK_STATE_PRELIGHT;
722 */
723
724 gtk_paint_option
725 (
726 button->style,
727 gdk_window,
728 state,
729 shadow_type,
730 NULL,
731 button,
732 "radiobutton",
733 dc.LogicalToDeviceX(rect.x),
734 dc.LogicalToDeviceY(rect.y),
735 rect.width, rect.height
736 );
737 }