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 #ifndef __WXGTK3__
  38 #include "wx/gtk/dc.h"
  39 #endif
  40
  41 #include <gtk/gtk.h>
  42 #include "wx/gtk/private.h"
  43 #include "wx/gtk/private/gtk2-compat.h"
  44
  45 // ----------------------------------------------------------------------------
  46 // wxRendererGTK: our wxRendererNative implementation
  47 // ----------------------------------------------------------------------------
  48
  49 class WXDLLEXPORT wxRendererGTK : public wxDelegateRendererNative
  50 {
  51 public:
  52     // draw the header control button (used by wxListCtrl)
  53     virtual int  DrawHeaderButton(wxWindow *win,
  54                                   wxDC& dc,
  55                                   const wxRect& rect,
  56                                   int flags = 0,
  57                                   wxHeaderSortIconType sortArrow = wxHDR_SORT_ICON_NONE,
  58                                   wxHeaderButtonParams* params = NULL);
  59
  60     virtual int GetHeaderButtonHeight(wxWindow *win);
  61
  62     virtual int GetHeaderButtonMargin(wxWindow *win);
  63
  64
  65     // draw the expanded/collapsed icon for a tree control item
  66     virtual void DrawTreeItemButton(wxWindow *win,
  67                                     wxDC& dc,
  68                                     const wxRect& rect,
  69                                     int flags = 0);
  70
  71     virtual void DrawSplitterBorder(wxWindow *win,
  72                                     wxDC& dc,
  73                                     const wxRect& rect,
  74                                     int flags = 0);
  75     virtual void DrawSplitterSash(wxWindow *win,
  76                                   wxDC& dc,
  77                                   const wxSize& size,
  78                                   wxCoord position,
  79                                   wxOrientation orient,
  80                                   int flags = 0);
  81
  82     virtual void DrawComboBoxDropButton(wxWindow *win,
  83                                         wxDC& dc,
  84                                         const wxRect& rect,
  85                                         int flags = 0);
  86
  87     virtual void DrawDropArrow(wxWindow *win,
  88                                wxDC& dc,
  89                                const wxRect& rect,
  90                                int flags = 0);
  91
  92     virtual void DrawCheckBox(wxWindow *win,
  93                               wxDC& dc,
  94                               const wxRect& rect,
  95                               int flags = 0);
  96
  97     virtual void DrawPushButton(wxWindow *win,
  98                                 wxDC& dc,
  99                                 const wxRect& rect,
 100                                 int flags = 0);
 101
 102     virtual void DrawItemSelectionRect(wxWindow *win,
 103                                        wxDC& dc,
 104                                        const wxRect& rect,
 105                                        int flags = 0);
 106
 107     virtual void DrawChoice(wxWindow* win,
 108                             wxDC& dc,
 109                             const wxRect& rect,
 110                             int flags=0);
 111
 112     virtual void DrawComboBox(wxWindow* win,
 113                                 wxDC& dc,
 114                                 const wxRect& rect,
 115                                 int flags=0);
 116
 117     virtual void DrawTextCtrl(wxWindow* win,
 118                                 wxDC& dc,
 119                                 const wxRect& rect,
 120                                 int flags=0);
 121
 122     virtual void DrawRadioBitmap(wxWindow* win,
 123                                 wxDC& dc,
 124                                 const wxRect& rect,
 125                                 int flags=0);
 126
 127     virtual void DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags = 0);
 128
 129     virtual wxSize GetCheckBoxSize(wxWindow *win);
 130
 131     virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
 132 };
 133
 134 // ============================================================================
 135 // implementation
 136 // ============================================================================
 137
 138 /* static */
 139 wxRendererNative& wxRendererNative::GetDefault()
 140 {
 141     static wxRendererGTK s_rendererGTK;
 142
 143     return s_rendererGTK;
 144 }
 145
 146 #ifdef __WXGTK3__
 147 #define NULL_RECT
 148 typedef cairo_t wxGTKDrawable;
 149
 150 static cairo_t* wxGetGTKDrawable(wxWindow*, const wxDC& dc)
 151 {
 152     wxGraphicsContext* gc = dc.GetGraphicsContext();
 153     wxCHECK_MSG(gc, NULL, "cannot use wxRendererNative on wxDC of this type");
 154     return static_cast<cairo_t*>(gc->GetNativeContext());
 155 }
 156
 157 static const GtkStateFlags stateTypeToFlags[] = {
 158     GTK_STATE_FLAG_NORMAL, GTK_STATE_FLAG_ACTIVE, GTK_STATE_FLAG_PRELIGHT,
 159     GTK_STATE_FLAG_SELECTED, GTK_STATE_FLAG_INSENSITIVE, GTK_STATE_FLAG_INCONSISTENT,
 160     GTK_STATE_FLAG_FOCUSED
 161 };
 162
 163 #else
 164 #define NULL_RECT NULL,
 165 typedef GdkWindow wxGTKDrawable;
 166
 167 static GdkWindow* wxGetGTKDrawable(wxWindow* win, wxDC& dc)
 168 {
 169     GdkWindow* gdk_window = NULL;
 170
 171 #if wxUSE_GRAPHICS_CONTEXT
 172     if ( wxDynamicCast(&dc, wxGCDC) )
 173         gdk_window = win->GTKGetDrawingWindow();
 174     else
 175 #endif
 176     {
 177         wxDCImpl *impl = dc.GetImpl();
 178         wxGTKDCImpl *gtk_impl = wxDynamicCast( impl, wxGTKDCImpl );
 179         if (gtk_impl)
 180             gdk_window = gtk_impl->GetGDKWindow();
 181         else
 182             wxFAIL_MSG("cannot use wxRendererNative on wxDC of this type");
 183     }
 184
 185 #if !wxUSE_GRAPHICS_CONTEXT
 186     wxUnusedVar(win);
 187 #endif
 188
 189     return gdk_window;
 190 }
 191 #endif
 192
 193 // ----------------------------------------------------------------------------
 194 // list/tree controls drawing
 195 // ----------------------------------------------------------------------------
 196
 197 int
 198 wxRendererGTK::DrawHeaderButton(wxWindow *win,
 199                                 wxDC& dc,
 200                                 const wxRect& rect,
 201                                 int flags,
 202                                 wxHeaderSortIconType sortArrow,
 203                                 wxHeaderButtonParams* params)
 204 {
 205     GtkWidget *button = wxGTKPrivate::GetHeaderButtonWidget();
 206     if (flags & wxCONTROL_SPECIAL)
 207         button = wxGTKPrivate::GetHeaderButtonWidgetFirst();
 208     if (flags & wxCONTROL_DIRTY)
 209         button = wxGTKPrivate::GetHeaderButtonWidgetLast();
 210
 211     int x_diff = 0;
 212     if (win->GetLayoutDirection() == wxLayout_RightToLeft)
 213         x_diff = rect.width;
 214
 215     GtkStateType state = GTK_STATE_NORMAL;
 216     if (flags & wxCONTROL_DISABLED)
 217         state = GTK_STATE_INSENSITIVE;
 218     else
 219     {
 220         if (flags & wxCONTROL_CURRENT)
 221             state = GTK_STATE_PRELIGHT;
 222     }
 223
 224 #ifdef __WXGTK3__
 225     cairo_t* cr = wxGetGTKDrawable(win, dc);
 226     if (cr)
 227     {
 228         GtkStyleContext* sc = gtk_widget_get_style_context(button);
 229         gtk_style_context_save(sc);
 230         gtk_style_context_set_state(sc, stateTypeToFlags[state]);
 231         gtk_render_background(sc, cr, rect.x - x_diff+4, rect.y+4, rect.width-8, rect.height-8);
 232         gtk_render_frame(sc, cr, rect.x - x_diff+4, rect.y+4, rect.width-8, rect.height-8);
 233         gtk_style_context_restore(sc);
 234     }
 235 #else
 236     GdkWindow* gdk_window = wxGetGTKDrawable(win, dc);
 237     gtk_paint_box
 238     (
 239         gtk_widget_get_style(button),
 240         gdk_window,
 241         state,
 242         GTK_SHADOW_OUT,
 243         NULL,
 244         button,
 245         "button",
 246         dc.LogicalToDeviceX(rect.x) - x_diff, rect.y, rect.width, rect.height
 247     );
 248 #endif
 249
 250     return DrawHeaderButtonContents(win, dc, rect, flags, sortArrow, params);
 251 }
 252
 253 int wxRendererGTK::GetHeaderButtonHeight(wxWindow *WXUNUSED(win))
 254 {
 255     GtkWidget *button = wxGTKPrivate::GetHeaderButtonWidget();
 256
 257     GtkRequisition req;
 258 #ifdef __WXGTK3__
 259     gtk_widget_get_preferred_height(button, NULL, &req.height);
 260 #else
 261     GTK_WIDGET_GET_CLASS(button)->size_request(button, &req);
 262 #endif
 263
 264     return req.height;
 265 }
 266
 267 int wxRendererGTK::GetHeaderButtonMargin(wxWindow *WXUNUSED(win))
 268 {
 269     wxFAIL_MSG( "GetHeaderButtonMargin() not implemented" );
 270     return -1;
 271 }
 272
 273
 274 // draw a ">" or "v" button
 275 void
 276 wxRendererGTK::DrawTreeItemButton(wxWindow* win,
 277                                   wxDC& dc, const wxRect& rect, int flags)
 278 {
 279     GtkWidget *tree = wxGTKPrivate::GetTreeWidget();
 280
 281     GtkStateType state;
 282     if ( flags & wxCONTROL_CURRENT )
 283         state = GTK_STATE_PRELIGHT;
 284     else
 285         state = GTK_STATE_NORMAL;
 286
 287     int x_diff = 0;
 288     if (win->GetLayoutDirection() == wxLayout_RightToLeft)
 289         x_diff = rect.width;
 290
 291 #ifdef __WXGTK3__
 292     cairo_t* cr = wxGetGTKDrawable(win, dc);
 293     if (cr)
 294     {
 295         gtk_widget_set_state_flags(tree, stateTypeToFlags[state], true);
 296         GtkStyleContext* sc = gtk_widget_get_style_context(tree);
 297         gtk_render_expander(sc, cr, rect.x - x_diff, rect.y, rect.width, rect.height);
 298     }
 299 #else
 300     // x and y parameters specify the center of the expander
 301     GdkWindow* gdk_window = wxGetGTKDrawable(win, dc);
 302     if (gdk_window == NULL)
 303         return;
 304     gtk_paint_expander
 305     (
 306         gtk_widget_get_style(tree),
 307         gdk_window,
 308         state,
 309         NULL,
 310         tree,
 311         "treeview",
 312         dc.LogicalToDeviceX(rect.x) + rect.width / 2 - x_diff,
 313         dc.LogicalToDeviceY(rect.y) + rect.height / 2,
 314         flags & wxCONTROL_EXPANDED ? GTK_EXPANDER_EXPANDED
 315                                    : GTK_EXPANDER_COLLAPSED
 316     );
 317 #endif
 318 }
 319
 320
 321 // ----------------------------------------------------------------------------
 322 // splitter sash drawing
 323 // ----------------------------------------------------------------------------
 324
 325 static int GetGtkSplitterFullSize(GtkWidget* widget)
 326 {
 327     gint handle_size;
 328     gtk_widget_style_get(widget, "handle_size", &handle_size, NULL);
 329
 330     return handle_size;
 331 }
 332
 333 wxSplitterRenderParams
 334 wxRendererGTK::GetSplitterParams(const wxWindow *WXUNUSED(win))
 335 {
 336     // we don't draw any border, hence 0 for the second field
 337     return wxSplitterRenderParams
 338            (
 339                GetGtkSplitterFullSize(wxGTKPrivate::GetSplitterWidget()),
 340                0,
 341                true     // hot sensitive
 342            );
 343 }
 344
 345 void
 346 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
 347                                   wxDC& WXUNUSED(dc),
 348                                   const wxRect& WXUNUSED(rect),
 349                                   int WXUNUSED(flags))
 350 {
 351     // nothing to do
 352 }
 353
 354 void
 355 wxRendererGTK::DrawSplitterSash(wxWindow* win,
 356                                 wxDC& dc,
 357                                 const wxSize& size,
 358                                 wxCoord position,
 359                                 wxOrientation orient,
 360                                 int flags)
 361 {
 362     if (gtk_widget_get_window(win->m_wxwindow) == NULL)
 363     {
 364         // window not realized yet
 365         return;
 366     }
 367
 368     wxGTKDrawable* drawable = wxGetGTKDrawable(win, dc);
 369     if (drawable == NULL)
 370         return;
 371
 372     // are we drawing vertical or horizontal splitter?
 373     const bool isVert = orient == wxVERTICAL;
 374
 375     GtkWidget* widget = wxGTKPrivate::GetSplitterWidget(orient);
 376     const int full_size = GetGtkSplitterFullSize(widget);
 377
 378     GdkRectangle rect;
 379
 380     if ( isVert )
 381     {
 382         rect.x = position;
 383         rect.y = 0;
 384         rect.width = full_size;
 385         rect.height = size.y;
 386     }
 387     else // horz
 388     {
 389         rect.x = 0;
 390         rect.y = position;
 391         rect.height = full_size;
 392         rect.width = size.x;
 393     }
 394
 395     int x_diff = 0;
 396     if (win->GetLayoutDirection() == wxLayout_RightToLeft)
 397         x_diff = rect.width;
 398
 399 #ifdef __WXGTK3__
 400     cairo_t* cr = wxGetGTKDrawable(win, dc);
 401     if (cr)
 402     {
 403         gtk_widget_set_state_flags(widget, stateTypeToFlags[flags & wxCONTROL_CURRENT ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL], true);
 404         GtkStyleContext* sc = gtk_widget_get_style_context(widget);
 405         gtk_render_handle(sc, cr, rect.x - x_diff, rect.y, rect.width, rect.height);
 406     }
 407 #else
 408     GdkWindow* gdk_window = wxGetGTKDrawable(win, dc);
 409     if (gdk_window == NULL)
 410         return;
 411     gtk_paint_handle
 412     (
 413         gtk_widget_get_style(win->m_wxwindow),
 414         gdk_window,
 415         flags & wxCONTROL_CURRENT ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
 416         GTK_SHADOW_NONE,
 417         NULL /* no clipping */,
 418         win->m_wxwindow,
 419         "paned",
 420         dc.LogicalToDeviceX(rect.x) - x_diff,
 421         dc.LogicalToDeviceY(rect.y),
 422         rect.width,
 423         rect.height,
 424         isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
 425     );
 426 #endif
 427 }
 428
 429 void
 430 wxRendererGTK::DrawDropArrow(wxWindow* win,
 431                              wxDC& dc,
 432                              const wxRect& rect,
 433                              int flags)
 434 {
 435     GtkWidget *button = wxGTKPrivate::GetButtonWidget();
 436
 437     // If we give WX_PIZZA(win->m_wxwindow)->bin_window as
 438     // a window for gtk_paint_xxx function, then it won't
 439     // work for wxMemoryDC. So that is why we assume wxDC
 440     // is wxWindowDC (wxClientDC, wxMemoryDC and wxPaintDC
 441     // are derived from it) and use its m_window.
 442
 443     // draw arrow so that there is even space horizontally
 444     // on both sides
 445     const int size = rect.width / 2;
 446     const int x = rect.x + (size + 1) / 2;
 447     const int y = rect.y + (rect.height - size + 1) / 2;
 448
 449     GtkStateType state;
 450
 451     if ( flags & wxCONTROL_PRESSED )
 452         state = GTK_STATE_ACTIVE;
 453     else if ( flags & wxCONTROL_DISABLED )
 454         state = GTK_STATE_INSENSITIVE;
 455     else if ( flags & wxCONTROL_CURRENT )
 456         state = GTK_STATE_PRELIGHT;
 457     else
 458         state = GTK_STATE_NORMAL;
 459
 460 #ifdef __WXGTK3__
 461     cairo_t* cr = wxGetGTKDrawable(win, dc);
 462     if (cr)
 463     {
 464         gtk_widget_set_state_flags(button, stateTypeToFlags[state], true);
 465         GtkStyleContext* sc = gtk_widget_get_style_context(button);
 466         gtk_render_arrow(sc, cr, G_PI, x, y, size);
 467     }
 468 #else
 469     GdkWindow* gdk_window = wxGetGTKDrawable(win, dc);
 470     if (gdk_window == NULL)
 471         return;
 472     // draw arrow on button
 473     gtk_paint_arrow
 474     (
 475         gtk_widget_get_style(button),
 476         gdk_window,
 477         state,
 478         flags & wxCONTROL_PRESSED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
 479         NULL,
 480         button,
 481         "arrow",
 482         GTK_ARROW_DOWN,
 483         FALSE,
 484         x, y,
 485         size, size
 486     );
 487 #endif
 488 }
 489
 490 void
 491 wxRendererGTK::DrawComboBoxDropButton(wxWindow *win,
 492                                       wxDC& dc,
 493                                       const wxRect& rect,
 494                                       int flags)
 495 {
 496     DrawPushButton(win,dc,rect,flags);
 497     DrawDropArrow(win,dc,rect);
 498 }
 499
 500 wxSize
 501 wxRendererGTK::GetCheckBoxSize(wxWindow *WXUNUSED(win))
 502 {
 503     gint indicator_size, indicator_spacing;
 504     gtk_widget_style_get(wxGTKPrivate::GetCheckButtonWidget(),
 505                          "indicator_size", &indicator_size,
 506                          "indicator_spacing", &indicator_spacing,
 507                          NULL);
 508
 509     int size = indicator_size + indicator_spacing * 2;
 510     return wxSize(size, size);
 511 }
 512
 513 void
 514 wxRendererGTK::DrawCheckBox(wxWindow* win,
 515                             wxDC& dc,
 516                             const wxRect& rect,
 517                             int flags )
 518 {
 519     GtkWidget *button = wxGTKPrivate::GetCheckButtonWidget();
 520
 521     gint indicator_size, indicator_spacing;
 522     gtk_widget_style_get(button,
 523                          "indicator_size", &indicator_size,
 524                          "indicator_spacing", &indicator_spacing,
 525                          NULL);
 526
 527 #ifndef __WXGTK3__
 528     GtkStateType state;
 529
 530     if ( flags & wxCONTROL_PRESSED )
 531         state = GTK_STATE_ACTIVE;
 532     else if ( flags & wxCONTROL_DISABLED )
 533         state = GTK_STATE_INSENSITIVE;
 534     else if ( flags & wxCONTROL_CURRENT )
 535         state = GTK_STATE_PRELIGHT;
 536     else
 537         state = GTK_STATE_NORMAL;
 538
 539     GtkShadowType shadow_type;
 540
 541     if ( flags & wxCONTROL_UNDETERMINED )
 542         shadow_type = GTK_SHADOW_ETCHED_IN;
 543     else if ( flags & wxCONTROL_CHECKED )
 544         shadow_type = GTK_SHADOW_IN;
 545     else
 546         shadow_type = GTK_SHADOW_OUT;
 547 #endif
 548
 549 #ifdef __WXGTK3__
 550     cairo_t* cr = wxGetGTKDrawable(win, dc);
 551     if (cr)
 552     {
 553         int stateFlags = GTK_STATE_FLAG_NORMAL;
 554         if (flags & wxCONTROL_CHECKED)
 555             stateFlags = GTK_STATE_FLAG_ACTIVE;
 556         if (flags & wxCONTROL_DISABLED)
 557             stateFlags |= GTK_STATE_FLAG_INSENSITIVE;
 558         if (flags & wxCONTROL_UNDETERMINED)
 559             stateFlags |= GTK_STATE_FLAG_INCONSISTENT;
 560         if (flags & wxCONTROL_CURRENT)
 561             stateFlags |= GTK_STATE_FLAG_PRELIGHT;
 562         GtkStyleContext* sc = gtk_widget_get_style_context(button);
 563         gtk_style_context_save(sc);
 564         gtk_style_context_set_state(sc, GtkStateFlags(stateFlags));
 565         gtk_style_context_add_class(sc, GTK_STYLE_CLASS_CHECK);
 566         gtk_render_check(sc, cr,
 567             rect.x + (rect.width - indicator_size) / 2,
 568             rect.y + (rect.height - indicator_size) / 2,
 569             indicator_size, indicator_size);
 570         gtk_style_context_restore(sc);
 571     }
 572 #else
 573     GdkWindow* gdk_window = wxGetGTKDrawable(win, dc);
 574     if (gdk_window == NULL)
 575         return;
 576
 577     gtk_paint_check
 578     (
 579         gtk_widget_get_style(button),
 580         gdk_window,
 581         state,
 582         shadow_type,
 583         NULL,
 584         button,
 585         "cellcheck",
 586         dc.LogicalToDeviceX(rect.x) + indicator_spacing,
 587         dc.LogicalToDeviceY(rect.y) + indicator_spacing,
 588         indicator_size, indicator_size
 589     );
 590 #endif
 591 }
 592
 593 void
 594 wxRendererGTK::DrawPushButton(wxWindow* win,
 595                               wxDC& dc,
 596                               const wxRect& rect,
 597                               int flags)
 598 {
 599     GtkWidget *button = wxGTKPrivate::GetButtonWidget();
 600
 601     // draw button
 602     GtkStateType state;
 603
 604     if ( flags & wxCONTROL_PRESSED )
 605         state = GTK_STATE_ACTIVE;
 606     else if ( flags & wxCONTROL_DISABLED )
 607         state = GTK_STATE_INSENSITIVE;
 608     else if ( flags & wxCONTROL_CURRENT )
 609         state = GTK_STATE_PRELIGHT;
 610     else
 611         state = GTK_STATE_NORMAL;
 612
 613 #ifdef __WXGTK3__
 614     cairo_t* cr = wxGetGTKDrawable(win, dc);
 615     if (cr)
 616     {
 617         GtkStyleContext* sc = gtk_widget_get_style_context(button);
 618         gtk_style_context_save(sc);
 619         gtk_style_context_set_state(sc, stateTypeToFlags[state]);
 620         gtk_render_background(sc, cr, rect.x, rect.y, rect.width, rect.height);
 621         gtk_render_frame(sc, cr, rect.x, rect.y, rect.width, rect.height);
 622         gtk_style_context_restore(sc);
 623     }
 624 #else
 625     GdkWindow* gdk_window = wxGetGTKDrawable(win, dc);
 626     if (gdk_window == NULL)
 627         return;
 628
 629     gtk_paint_box
 630     (
 631         gtk_widget_get_style(button),
 632         gdk_window,
 633         state,
 634         flags & wxCONTROL_PRESSED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
 635         NULL,
 636         button,
 637         "button",
 638         dc.LogicalToDeviceX(rect.x),
 639         dc.LogicalToDeviceY(rect.y),
 640         rect.width,
 641         rect.height
 642     );
 643 #endif
 644 }
 645
 646 void
 647 wxRendererGTK::DrawItemSelectionRect(wxWindow* win,
 648                                      wxDC& dc,
 649                                      const wxRect& rect,
 650                                      int flags )
 651 {
 652     wxGTKDrawable* drawable = wxGetGTKDrawable(win, dc);
 653     if (drawable == NULL)
 654         return;
 655
 656     if (flags & wxCONTROL_SELECTED)
 657     {
 658         int x_diff = 0;
 659         if (win->GetLayoutDirection() == wxLayout_RightToLeft)
 660             x_diff = rect.width;
 661
 662         GtkWidget* treeWidget = wxGTKPrivate::GetTreeWidget();
 663
 664 #ifdef __WXGTK3__
 665         GtkStyleContext* sc = gtk_widget_get_style_context(treeWidget);
 666         gtk_style_context_save(sc);
 667         gtk_style_context_set_state(sc, GTK_STATE_FLAG_SELECTED);
 668         gtk_style_context_add_class(sc, GTK_STYLE_CLASS_CELL);
 669         gtk_render_background(sc, drawable, rect.x - x_diff, rect.y, rect.width, rect.height);
 670         gtk_style_context_restore(sc);
 671 #else
 672         // the wxCONTROL_FOCUSED state is deduced
 673         // directly from the m_wxwindow by GTK+
 674         gtk_paint_flat_box(gtk_widget_get_style(treeWidget),
 675                         drawable,
 676                         GTK_STATE_SELECTED,
 677                         GTK_SHADOW_NONE,
 678                         NULL_RECT
 679                         win->m_wxwindow,
 680                         "cell_even",
 681                         dc.LogicalToDeviceX(rect.x) - x_diff,
 682                         dc.LogicalToDeviceY(rect.y),
 683                         rect.width,
 684                         rect.height );
 685 #endif
 686     }
 687
 688     if ((flags & wxCONTROL_CURRENT) && (flags & wxCONTROL_FOCUSED))
 689         DrawFocusRect(win, dc, rect, flags);
 690 }
 691
 692 void wxRendererGTK::DrawFocusRect(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
 693 {
 694     wxGTKDrawable* drawable = wxGetGTKDrawable(win, dc);
 695     if (drawable == NULL)
 696         return;
 697
 698     GtkStateType state;
 699     if (flags & wxCONTROL_SELECTED)
 700         state = GTK_STATE_SELECTED;
 701     else
 702         state = GTK_STATE_NORMAL;
 703
 704 #ifdef __WXGTK3__
 705     GtkStyleContext* sc = gtk_widget_get_style_context(win->m_widget);
 706     gtk_style_context_save(sc);
 707     gtk_style_context_set_state(sc, stateTypeToFlags[state]);
 708     gtk_render_focus(sc, drawable, rect.x, rect.y, rect.width, rect.height);
 709     gtk_style_context_restore(sc);
 710 #else
 711     gtk_paint_focus( gtk_widget_get_style(win->m_widget),
 712                      drawable,
 713                      state,
 714                      NULL_RECT
 715                      win->m_wxwindow,
 716                      NULL,
 717                      dc.LogicalToDeviceX(rect.x),
 718                      dc.LogicalToDeviceY(rect.y),
 719                      rect.width,
 720                      rect.height );
 721 #endif
 722 }
 723
 724 //TODO: GTK3 implementations for the remaining functions below
 725
 726 // Uses the theme to draw the border and fill for something like a wxTextCtrl
 727 void wxRendererGTK::DrawTextCtrl(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
 728 {
 729     GtkWidget *entry = wxGTKPrivate::GetTextEntryWidget();
 730
 731     wxGTKDrawable* drawable = wxGetGTKDrawable(win, dc);
 732     if (drawable == NULL)
 733         return;
 734
 735     GtkStateType state = GTK_STATE_NORMAL;
 736     if ( flags & wxCONTROL_DISABLED )
 737         state = GTK_STATE_INSENSITIVE;
 738
 739     gtk_widget_set_can_focus(entry, (flags & wxCONTROL_CURRENT) != 0);
 740
 741     gtk_paint_shadow
 742     (
 743         gtk_widget_get_style(entry),
 744         drawable,
 745         state,
 746         GTK_SHADOW_OUT,
 747         NULL_RECT
 748         entry,
 749         "entry",
 750         dc.LogicalToDeviceX(rect.x),
 751         dc.LogicalToDeviceY(rect.y),
 752         rect.width,
 753         rect.height
 754   );
 755 }
 756
 757 // Draw the equivalent of a wxComboBox
 758 void wxRendererGTK::DrawComboBox(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
 759 {
 760     GtkWidget *combo = wxGTKPrivate::GetComboBoxWidget();
 761
 762     wxGTKDrawable* drawable = wxGetGTKDrawable(win, dc);
 763
 764     GtkStateType state = GTK_STATE_NORMAL;
 765     if ( flags & wxCONTROL_DISABLED )
 766        state = GTK_STATE_INSENSITIVE;
 767
 768     gtk_widget_set_can_focus(combo, (flags & wxCONTROL_CURRENT) != 0);
 769
 770     if (drawable == NULL)
 771         return;
 772
 773     gtk_paint_shadow
 774     (
 775         gtk_widget_get_style(combo),
 776         drawable,
 777         state,
 778         GTK_SHADOW_OUT,
 779         NULL_RECT
 780         combo,
 781         "combobox",
 782         dc.LogicalToDeviceX(rect.x),
 783         dc.LogicalToDeviceY(rect.y),
 784         rect.width,
 785         rect.height
 786     );
 787
 788     wxRect r = rect;
 789     int extent = rect.height / 2;
 790     r.x += rect.width - extent - extent/2;
 791     r.y += extent/2;
 792     r.width = extent;
 793     r.height = extent;
 794
 795     gtk_paint_arrow
 796     (
 797         gtk_widget_get_style(combo),
 798         drawable,
 799         state,
 800         GTK_SHADOW_OUT,
 801         NULL_RECT
 802         combo,
 803         "arrow",
 804         GTK_ARROW_DOWN,
 805         TRUE,
 806         dc.LogicalToDeviceX(r.x),
 807         dc.LogicalToDeviceY(r.y),
 808         r.width,
 809         r.height
 810     );
 811
 812     r = rect;
 813     r.x += rect.width - 2*extent;
 814     r.width = 2;
 815
 816     gtk_paint_box
 817     (
 818         gtk_widget_get_style(combo),
 819         drawable,
 820         state,
 821         GTK_SHADOW_ETCHED_OUT,
 822         NULL_RECT
 823         combo,
 824         "vseparator",
 825         dc.LogicalToDeviceX(r.x),
 826         dc.LogicalToDeviceY(r.y+1),
 827         r.width,
 828         r.height-2
 829     );
 830 }
 831
 832
 833 void wxRendererGTK::DrawChoice(wxWindow* win, wxDC& dc,
 834                            const wxRect& rect, int flags)
 835 {
 836     DrawComboBox( win, dc, rect, flags );
 837 }
 838
 839
 840 // Draw a themed radio button
 841 void wxRendererGTK::DrawRadioBitmap(wxWindow* win, wxDC& dc, const wxRect& rect, int flags)
 842 {
 843     GtkWidget *button = wxGTKPrivate::GetRadioButtonWidget();
 844
 845     wxGTKDrawable* drawable = wxGetGTKDrawable(win, dc);
 846     if (drawable == NULL)
 847         return;
 848
 849     GtkShadowType shadow_type = GTK_SHADOW_OUT;
 850     if ( flags & wxCONTROL_CHECKED )
 851         shadow_type = GTK_SHADOW_IN;
 852     else if ( flags & wxCONTROL_UNDETERMINED )
 853         shadow_type = GTK_SHADOW_ETCHED_IN;
 854
 855     GtkStateType state = GTK_STATE_NORMAL;
 856     if ( flags & wxCONTROL_DISABLED )
 857         state = GTK_STATE_INSENSITIVE;
 858     if ( flags & wxCONTROL_PRESSED )
 859         state = GTK_STATE_ACTIVE;
 860 /*
 861     Don't know when to set this
 862        state_type = GTK_STATE_PRELIGHT;
 863 */
 864
 865     gtk_paint_option
 866     (
 867         gtk_widget_get_style(button),
 868         drawable,
 869         state,
 870         shadow_type,
 871         NULL_RECT
 872         button,
 873         "radiobutton",
 874         dc.LogicalToDeviceX(rect.x),
 875         dc.LogicalToDeviceY(rect.y),
 876         rect.width, rect.height
 877     );
 878 }