src/gtk/renderer.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #include <gtk/gtk.h>
  29 #include "wx/gtk/win_gtk.h"
  30
  31 #include "wx/window.h"
  32 #include "wx/dc.h"
  33 #include "wx/dcclient.h"
  34
  35 #ifdef __WXGTK20__
  36     #include "wx/settings.h"
  37 #endif // GTK 2.0
  38
  39 #ifdef __WXGTK20__
  40     #define WXUNUSED_IN_GTK1(arg) arg
  41 #else
  42     #define WXUNUSED_IN_GTK1(arg)
  43 #endif
  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 void DrawHeaderButton(wxWindow *win,
  54                                   wxDC& dc,
  55                                   const wxRect& rect,
  56                                   int flags = 0);
  57
  58 #ifdef __WXGTK20__
  59     // draw the expanded/collapsed icon for a tree control item
  60     virtual void DrawTreeItemButton(wxWindow *win,
  61                                     wxDC& dc,
  62                                     const wxRect& rect,
  63                                     int flags = 0);
  64 #endif // GTK+ 2.0
  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 wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
  83
  84 private:
  85     // FIXME: shouldn't we destroy these windows somewhere?
  86
  87     // used by DrawHeaderButton and DrawComboBoxDropButton
  88     static GtkWidget *GetButtonWidget();
  89
  90 #ifdef __WXGTK20__
  91     // used by DrawTreeItemButton()
  92     static GtkWidget *GetTreeWidget();
  93 #endif // GTK+ 2.0
  94 };
  95
  96 // ============================================================================
  97 // implementation
  98 // ============================================================================
  99
 100 /* static */
 101 wxRendererNative& wxRendererNative::GetDefault()
 102 {
 103     static wxRendererGTK s_rendererGTK;
 104
 105     return s_rendererGTK;
 106 }
 107
 108 // ----------------------------------------------------------------------------
 109 // helper functions
 110 // ----------------------------------------------------------------------------
 111
 112 GtkWidget *
 113 wxRendererGTK::GetButtonWidget()
 114 {
 115     static GtkWidget *s_button = NULL;
 116     static GtkWidget *s_window = NULL;
 117
 118     if ( !s_button )
 119     {
 120         s_window = gtk_window_new( GTK_WINDOW_POPUP );
 121         gtk_widget_realize( s_window );
 122         s_button = gtk_button_new();
 123         gtk_container_add( GTK_CONTAINER(s_window), s_button );
 124         gtk_widget_realize( s_button );
 125     }
 126
 127     return s_button;
 128 }
 129
 130 #ifdef __WXGTK20__
 131
 132 GtkWidget *
 133 wxRendererGTK::GetTreeWidget()
 134 {
 135     static GtkWidget *s_tree = NULL;
 136     static GtkWidget *s_window = NULL;
 137
 138     if ( !s_tree )
 139     {
 140         s_tree = gtk_tree_view_new();
 141         s_window = gtk_window_new( GTK_WINDOW_POPUP );
 142         gtk_widget_realize( s_window );
 143         gtk_container_add( GTK_CONTAINER(s_window), s_tree );
 144         gtk_widget_realize( s_tree );
 145     }
 146
 147     return s_tree;
 148 }
 149
 150 #endif // GTK+ 2.0
 151
 152 // ----------------------------------------------------------------------------
 153 // list/tree controls drawing
 154 // ----------------------------------------------------------------------------
 155
 156 void
 157 wxRendererGTK::DrawHeaderButton(wxWindow *win,
 158                                 wxDC& dc,
 159                                 const wxRect& rect,
 160                                 int flags)
 161 {
 162
 163     GtkWidget *button = GetButtonWidget();
 164
 165     gtk_paint_box
 166     (
 167         button->style,
 168         // FIXME: I suppose GTK_PIZZA(win->m_wxwindow)->bin_window doesn't work with wxMemoryDC.
 169         //   Maybe use code similar as in DrawComboBoxDropButton below?
 170         GTK_PIZZA(win->m_wxwindow)->bin_window,
 171         flags & wxCONTROL_DISABLED ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL,
 172         GTK_SHADOW_OUT,
 173         NULL,
 174         button,
 175         "button",
 176         dc.XLOG2DEV(rect.x) -1, rect.y -1, rect.width +2, rect.height +2
 177     );
 178 }
 179
 180 #ifdef __WXGTK20__
 181
 182 // draw a ">" or "v" button
 183 void
 184 wxRendererGTK::DrawTreeItemButton(wxWindow* win,
 185                                   wxDC& dc, const wxRect& rect, int flags)
 186 {
 187     GtkWidget *tree = GetTreeWidget();
 188
 189     GtkStateType state;
 190     if ( flags & wxCONTROL_CURRENT )
 191         state = GTK_STATE_PRELIGHT;
 192     else
 193         state = GTK_STATE_NORMAL;
 194
 195     // VZ: I don't know how to get the size of the expander so as to centre it
 196     //     in the given rectangle, +2/3 below is just what looks good here...
 197     gtk_paint_expander
 198     (
 199         tree->style,
 200         GTK_PIZZA(win->m_wxwindow)->bin_window,
 201         state,
 202         NULL,
 203         tree,
 204         "treeview",
 205         dc.LogicalToDeviceX(rect.x) + 2,
 206         dc.LogicalToDeviceY(rect.y) + 3,
 207         flags & wxCONTROL_EXPANDED ? GTK_EXPANDER_EXPANDED
 208                                    : GTK_EXPANDER_COLLAPSED
 209     );
 210 }
 211
 212 #endif // GTK+ 2.0
 213
 214 // ----------------------------------------------------------------------------
 215 // splitter sash drawing
 216 // ----------------------------------------------------------------------------
 217
 218 #ifndef __WXGTK20__
 219     // the full sash width (should be even)
 220     static const wxCoord SASH_SIZE = 8;
 221
 222     // margin around the sash
 223     static const wxCoord SASH_MARGIN = 2;
 224 #endif // GTK+ 2.x/1.x
 225
 226 static int GetGtkSplitterFullSize()
 227 {
 228 #ifdef __WXGTK20__
 229     static GtkWidget *s_paned = NULL;
 230     if (s_paned == NULL)
 231         s_paned = gtk_vpaned_new();
 232
 233     gint handle_size;
 234     gtk_widget_style_get (s_paned, "handle_size", &handle_size, NULL);
 235
 236     return handle_size;
 237 #else
 238     return SASH_SIZE + SASH_MARGIN;
 239 #endif
 240 }
 241
 242 wxSplitterRenderParams
 243 wxRendererGTK::GetSplitterParams(const wxWindow *WXUNUSED(win))
 244 {
 245     // we don't draw any border, hence 0 for the second field
 246     return wxSplitterRenderParams
 247            (
 248                GetGtkSplitterFullSize(),
 249                0,
 250 #ifdef __WXGTK20__
 251                true     // hot sensitive
 252 #else // GTK+ 1.x
 253                false    // not
 254 #endif // GTK+ 2.x/1.x
 255            );
 256 }
 257
 258 void
 259 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
 260                                   wxDC& WXUNUSED(dc),
 261                                   const wxRect& WXUNUSED(rect),
 262                                   int WXUNUSED(flags))
 263 {
 264     // nothing to do
 265 }
 266
 267 void
 268 wxRendererGTK::DrawSplitterSash(wxWindow *win,
 269                                 wxDC& dc,
 270                                 const wxSize& size,
 271                                 wxCoord position,
 272                                 wxOrientation orient,
 273                                 int WXUNUSED_IN_GTK1(flags))
 274 {
 275     if ( !win->m_wxwindow->window )
 276     {
 277         // window not realized yet
 278         return;
 279     }
 280
 281     wxCoord full_size = GetGtkSplitterFullSize();
 282
 283     // are we drawing vertical or horizontal splitter?
 284     const bool isVert = orient == wxVERTICAL;
 285
 286     GdkRectangle rect;
 287     GdkRectangle erase_rect;
 288     if ( isVert )
 289     {
 290         int h = win->GetClientSize().GetHeight();
 291
 292         rect.x = position;
 293         rect.y = 0;
 294         rect.width = full_size;
 295         rect.height = h;
 296
 297         erase_rect.x = position;
 298         erase_rect.y = 0;
 299         erase_rect.width = full_size;
 300         erase_rect.height = h;
 301     }
 302     else // horz
 303     {
 304         int w = win->GetClientSize().GetWidth();
 305
 306         rect.x = 0;
 307         rect.y = position;
 308         rect.height = full_size;
 309         rect.width = w;
 310
 311         erase_rect.y = position;
 312         erase_rect.x = 0;
 313         erase_rect.height = full_size;
 314         erase_rect.width = w;
 315     }
 316
 317 #if 0
 318     // RR: After a correction to the orientation of the sash
 319     //     this doesn't seem to be required anymore and it
 320     //     seems to confuse some themes
 321
 322     // we must erase everything first, otherwise the garbage
 323     // from the old sash is left when dragging it
 324     gtk_paint_flat_box
 325     (
 326         win->m_wxwindow->style,
 327         GTK_PIZZA(win->m_wxwindow)->bin_window,
 328         GTK_STATE_NORMAL,
 329         GTK_SHADOW_NONE,
 330         NULL,
 331         win->m_wxwindow,
 332         (char *)"viewportbin", // const_cast
 333         erase_rect.x,
 334         erase_rect.y,
 335         erase_rect.width,
 336         erase_rect.height
 337     );
 338 #endif
 339
 340 #ifdef __WXGTK20__
 341     gtk_paint_handle
 342     (
 343         win->m_wxwindow->style,
 344         GTK_PIZZA(win->m_wxwindow)->bin_window,
 345         flags & wxCONTROL_CURRENT ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
 346         GTK_SHADOW_NONE,
 347         NULL /* no clipping */,
 348         win->m_wxwindow,
 349         "paned",
 350         rect.x,
 351         rect.y,
 352         rect.width,
 353         rect.height,
 354         isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
 355     );
 356 #else // GTK+ 1.x
 357
 358     // leave some margin before sash itself
 359     position += SASH_MARGIN / 2;
 360
 361     // and finally draw it using GTK paint functions
 362     typedef void (*GtkPaintLineFunc)(GtkStyle *, GdkWindow *,
 363                                                 GtkStateType,
 364                                                 GdkRectangle *, GtkWidget *,
 365                                                 gchar *,
 366                                                 gint, gint, gint);
 367
 368     GtkPaintLineFunc func = isVert ? gtk_paint_vline : gtk_paint_hline;
 369
 370     (*func)
 371     (
 372         win->m_wxwindow->style,
 373         GTK_PIZZA(win->m_wxwindow)->bin_window,
 374         GTK_STATE_NORMAL,
 375         NULL,
 376         win->m_wxwindow,
 377         (char *)"paned", // const_cast
 378         0, isVert ? size.y : size.x, position + SASH_SIZE / 2 - 1
 379     );
 380
 381     gtk_paint_box
 382     (
 383         win->m_wxwindow->style,
 384         GTK_PIZZA(win->m_wxwindow)->bin_window,
 385         GTK_STATE_NORMAL,
 386         GTK_SHADOW_OUT,
 387         (GdkRectangle*) NULL,
 388         win->m_wxwindow,
 389         (char *)"paned", // const_cast
 390         isVert ? position : size.x - 2*SASH_SIZE,
 391         isVert ? size.y - 2*SASH_SIZE : position,
 392         SASH_SIZE, SASH_SIZE
 393     );
 394 #endif // GTK+ 2.x/1.x
 395 }
 396
 397 void wxRendererGTK::DrawComboBoxDropButton(wxWindow *win,
 398                                             wxDC& dc,
 399                                             const wxRect& rect,
 400                                             int flags)
 401 {
 402     GtkWidget *button = GetButtonWidget();
 403
 404     // device context must inherit from wxWindowDC
 405     // (so it must be wxClientDC, wxMemoryDC or wxPaintDC)
 406     wxWindowDC& wdc = (wxWindowDC&)dc;
 407
 408     // only doing debug-time checking here (it should probably be enough)
 409     wxASSERT ( wdc.IsKindOf(CLASSINFO(wxWindowDC)) );
 410
 411     GtkStateType state;
 412
 413     if ( flags & wxCONTROL_CURRENT )
 414         state = GTK_STATE_PRELIGHT;
 415     else if ( flags & wxCONTROL_DISABLED )
 416         state = GTK_STATE_INSENSITIVE;
 417     else
 418         state = GTK_STATE_NORMAL;
 419
 420     // draw arrow on button
 421     gtk_paint_arrow
 422     (
 423         button->style,
 424         wdc.m_window,
 425         state,
 426         flags & wxCONTROL_PRESSED ? GTK_SHADOW_IN : GTK_SHADOW_OUT,
 427         NULL,
 428         button,
 429         "arrow",
 430         GTK_ARROW_DOWN,
 431         FALSE,
 432         rect.x + 1, rect.y + 1, rect.width - 2, rect.height - 2
 433     );
 434 }
 435