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
  34 #ifdef __WXGTK20__
  35     #include "wx/settings.h"
  36 #endif // GTK 2.0
  37
  38 #ifdef __WXGTK20__
  39     #define WXUNUSED_IN_GTK1(arg) arg
  40 #else
  41     #define WXUNUSED_IN_GTK1(arg)
  42 #endif
  43
  44 // ----------------------------------------------------------------------------
  45 // wxRendererGTK: our wxRendererNative implementation
  46 // ----------------------------------------------------------------------------
  47
  48 class WXDLLEXPORT wxRendererGTK : public wxDelegateRendererNative
  49 {
  50 public:
  51     // draw the header control button (used by wxListCtrl)
  52     virtual void DrawHeaderButton(wxWindow *win,
  53                                   wxDC& dc,
  54                                   const wxRect& rect,
  55                                   int flags = 0);
  56
  57 #ifdef __WXGTK20__
  58     // draw the expanded/collapsed icon for a tree control item
  59     virtual void DrawTreeItemButton(wxWindow *win,
  60                                     wxDC& dc,
  61                                     const wxRect& rect,
  62                                     int flags = 0);
  63 #endif // GTK 2.0
  64
  65     virtual void DrawSplitterBorder(wxWindow *win,
  66                                     wxDC& dc,
  67                                     const wxRect& rect,
  68                                     int flags = 0);
  69     virtual void DrawSplitterSash(wxWindow *win,
  70                                   wxDC& dc,
  71                                   const wxSize& size,
  72                                   wxCoord position,
  73                                   wxOrientation orient,
  74                                   int flags = 0);
  75
  76     virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
  77 };
  78
  79 // ============================================================================
  80 // implementation
  81 // ============================================================================
  82
  83 /* static */
  84 wxRendererNative& wxRendererNative::GetDefault()
  85 {
  86     static wxRendererGTK s_rendererGTK;
  87
  88     return s_rendererGTK;
  89 }
  90
  91 // ----------------------------------------------------------------------------
  92 // list/tree controls drawing
  93 // ----------------------------------------------------------------------------
  94
  95 void
  96 wxRendererGTK::DrawHeaderButton(wxWindow *win,
  97                                 wxDC& dc,
  98                                 const wxRect& rect,
  99                                 int flags)
 100 {
 101
 102     static GtkWidget *s_button = NULL;
 103     static GtkWidget *s_window = NULL;
 104     if (s_button == NULL)
 105     {
 106         s_window = gtk_window_new( GTK_WINDOW_POPUP );
 107     gtk_widget_realize( s_window );
 108     s_button = gtk_button_new();
 109     gtk_container_add( GTK_CONTAINER(s_window), s_button );
 110     gtk_widget_realize( s_button );
 111     }
 112
 113     gtk_paint_box
 114     (
 115     s_button->style,
 116         GTK_PIZZA(win->m_wxwindow)->bin_window,
 117         flags & wxCONTROL_DISABLED ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL,
 118         GTK_SHADOW_OUT,
 119     NULL,
 120         s_button,
 121         "button",
 122         dc.XLOG2DEV(rect.x) -1, rect.y -1, rect.width +2, rect.height +2
 123     );
 124 }
 125
 126 #ifdef __WXGTK20__
 127
 128 // draw a ">" or "v" button
 129 //
 130 // TODO: isn't there a GTK function to draw it?
 131 void
 132 wxRendererGTK::DrawTreeItemButton(wxWindow* win,
 133                                   wxDC& dc, const wxRect& rect, int flags)
 134 {
 135 #if 1
 136
 137 #define PM_SIZE 8
 138
 139     GtkPizza *pizza = GTK_PIZZA( win->m_wxwindow );
 140     GtkStyle *style = win->m_widget->style;
 141     int x = rect.x;
 142     int y = rect.y;
 143     y = dc.LogicalToDeviceY( y );
 144     x = dc.LogicalToDeviceX( x );
 145
 146 #if 1
 147     // This draws the GTK+ 2.2.4 triangle
 148     x--;
 149     GdkPoint points[3];
 150
 151     if ( flags & wxCONTROL_EXPANDED )
 152     {
 153         points[0].x = x;
 154         points[0].y = y + (PM_SIZE + 2) / 6;
 155         points[1].x = points[0].x + (PM_SIZE + 2);
 156         points[1].y = points[0].y;
 157         points[2].x = (points[0].x + (PM_SIZE + 2) / 2);
 158         points[2].y = y + 2 * (PM_SIZE + 2) / 3;
 159     }
 160     else
 161     {
 162         points[0].x = x + ((PM_SIZE + 2) / 6 + 2);
 163         points[0].y = y - 1;
 164         points[1].x = points[0].x;
 165         points[1].y = points[0].y + (PM_SIZE + 2);
 166         points[2].x = (points[0].x +
 167              (2 * (PM_SIZE + 2) / 3 - 1));
 168         points[2].y = points[0].y + (PM_SIZE + 2) / 2;
 169     }
 170
 171     if ( flags & wxCONTROL_CURRENT )
 172         gdk_draw_polygon( pizza->bin_window, style->fg_gc[GTK_STATE_PRELIGHT], TRUE, points, 3);
 173     else
 174         gdk_draw_polygon( pizza->bin_window, style->base_gc[GTK_STATE_NORMAL], TRUE, points, 3);
 175     gdk_draw_polygon( pizza->bin_window, style->fg_gc[GTK_STATE_NORMAL], FALSE, points, 3 );
 176 #else
 177     // this draws the GTK+ 2.2.3 tree item square
 178     gdk_draw_rectangle( pizza->bin_window,
 179         style->base_gc[GTK_STATE_NORMAL], TRUE,
 180         x, y, PM_SIZE, PM_SIZE);
 181     gdk_draw_rectangle( pizza->bin_window,
 182         style->fg_gc[GTK_STATE_NORMAL], FALSE,
 183         x, y, PM_SIZE, PM_SIZE);
 184
 185     gdk_draw_line( pizza->bin_window, style->fg_gc[GTK_STATE_NORMAL],
 186         x + 2, y + PM_SIZE / 2, x + PM_SIZE - 2, y + PM_SIZE / 2);
 187
 188     if ( flags & wxCONTROL_EXPANDED )
 189     {
 190         gdk_draw_line( pizza->bin_window, style->fg_gc[GTK_STATE_NORMAL],
 191                x + PM_SIZE / 2, y + 2,
 192                x + PM_SIZE / 2, y + PM_SIZE - 2);
 193     }
 194 #endif
 195
 196
 197 #else
 198     dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT),
 199                         wxSOLID));
 200     dc.SetPen(*wxBLACK_PEN);
 201     wxPoint button[3];
 202
 203     const wxCoord xMiddle = rect.x + rect.width/2;
 204     const wxCoord yMiddle = rect.y + rect.height/2;
 205
 206     if ( flags & wxCONTROL_EXPANDED )
 207     {
 208         button[0].x = rect.GetLeft();
 209         button[0].y = yMiddle - 2;
 210         button[1].x = rect.GetRight();
 211         button[1].y = yMiddle - 2;
 212         button[2].x = xMiddle;
 213         button[2].y = yMiddle + 3;
 214     }
 215     else // collapsed
 216     {
 217         button[0].y = rect.GetBottom();
 218         button[0].x = xMiddle - 2;
 219         button[1].y = rect.GetTop();
 220         button[1].x = xMiddle - 2;
 221         button[2].y = yMiddle;
 222         button[2].x = xMiddle + 3;
 223     }
 224
 225     dc.DrawPolygon(3, button);
 226 #endif
 227 }
 228
 229 #endif // GTK 2.0
 230
 231 // ----------------------------------------------------------------------------
 232 // splitter sash drawing
 233 // ----------------------------------------------------------------------------
 234
 235 // all this should probably be read from the current theme settings somehow?
 236 #ifdef __WXGTK20__
 237     // the full sash size
 238     static const wxCoord SASH_FULL_SIZE = 5;
 239 #else // GTK+ 1.x
 240     // the full sash width (should be even)
 241     static const wxCoord SASH_SIZE = 8;
 242
 243     // margin around the sash
 244     static const wxCoord SASH_MARGIN = 2;
 245
 246     // the full sash size
 247     static const wxCoord SASH_FULL_SIZE = SASH_SIZE + SASH_MARGIN;
 248 #endif // GTK+ 2.x/1.x
 249
 250 wxSplitterRenderParams
 251 wxRendererGTK::GetSplitterParams(const wxWindow * WXUNUSED(win))
 252 {
 253     // we don't draw any border, hence 0 for the second field
 254     return wxSplitterRenderParams
 255            (
 256                SASH_FULL_SIZE,
 257                0,
 258 #ifdef __WXGTK20__
 259                true     // hot sensitive
 260 #else // GTK+ 1.x
 261                false    // not
 262 #endif // GTK+ 2.x/1.x
 263            );
 264 }
 265
 266 void
 267 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
 268                                   wxDC& WXUNUSED(dc),
 269                                   const wxRect& WXUNUSED(rect),
 270                                   int WXUNUSED(flags))
 271 {
 272     // nothing to do
 273 }
 274
 275 void
 276 wxRendererGTK::DrawSplitterSash(wxWindow *win,
 277                                 wxDC& dc,
 278                                 const wxSize& size,
 279                                 wxCoord position,
 280                                 wxOrientation orient,
 281                                 int WXUNUSED_IN_GTK1(flags))
 282 {
 283     if ( !win->m_wxwindow->window )
 284     {
 285         // window not realized yet
 286         return;
 287     }
 288
 289     // are we drawing vertical or horizontal splitter?
 290     const bool isVert = orient == wxVERTICAL;
 291
 292     GdkRectangle rect;
 293     GdkRectangle erase_rect;
 294     if ( isVert )
 295     {
 296         int h = win->GetClientSize().GetHeight();
 297
 298         rect.x = position;
 299         rect.y = 0;
 300         rect.width = SASH_FULL_SIZE;
 301         rect.height = h;
 302
 303         erase_rect.x = position;
 304         erase_rect.y = 0;
 305         erase_rect.width = SASH_FULL_SIZE;
 306         erase_rect.height = h;
 307     }
 308     else // horz
 309     {
 310         int w = win->GetClientSize().GetWidth();
 311
 312         rect.x = 0;
 313         rect.y = position;
 314         rect.height = SASH_FULL_SIZE;
 315         rect.width = w;
 316
 317         erase_rect.y = position;
 318         erase_rect.x = 0;
 319         erase_rect.height = SASH_FULL_SIZE;
 320         erase_rect.width = w;
 321     }
 322
 323     // we must erase everything first, otherwise the garbage from the old sash
 324     // is left when dragging it
 325     //
 326     // TODO: is this the right way to draw themed background?
 327     gtk_paint_flat_box
 328     (
 329         win->m_wxwindow->style,
 330         GTK_PIZZA(win->m_wxwindow)->bin_window,
 331         GTK_STATE_NORMAL,
 332         GTK_SHADOW_NONE,
 333         NULL,
 334         win->m_wxwindow,
 335         (char *)"base", // const_cast
 336         erase_rect.x,
 337         erase_rect.y,
 338         erase_rect.width,
 339         erase_rect.height
 340     );
 341
 342 #ifdef __WXGTK20__
 343     gtk_paint_handle
 344     (
 345         win->m_wxwindow->style,
 346         GTK_PIZZA(win->m_wxwindow)->bin_window,
 347         flags & wxCONTROL_CURRENT ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
 348         GTK_SHADOW_NONE,
 349         NULL /* no clipping */,
 350         win->m_wxwindow,
 351         "paned",
 352         rect.x,
 353         rect.y,
 354         rect.width,
 355         rect.height,
 356         isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
 357     );
 358 #else // GTK+ 1.x
 359
 360     // leave some margin before sash itself
 361     position += SASH_MARGIN / 2;
 362
 363     // and finally draw it using GTK paint functions
 364     typedef void (*GtkPaintLineFunc)(GtkStyle *, GdkWindow *,
 365                                                 GtkStateType,
 366                                                 GdkRectangle *, GtkWidget *,
 367                                                 gchar *,
 368                                                 gint, gint, gint);
 369
 370     GtkPaintLineFunc func = isVert ? gtk_paint_vline : gtk_paint_hline;
 371
 372     (*func)
 373     (
 374         win->m_wxwindow->style,
 375         GTK_PIZZA(win->m_wxwindow)->bin_window,
 376         GTK_STATE_NORMAL,
 377         NULL,
 378         win->m_wxwindow,
 379         (char *)"paned", // const_cast
 380         0, isVert ? size.y : size.x, position + SASH_SIZE / 2 - 1
 381     );
 382
 383     gtk_paint_box
 384     (
 385         win->m_wxwindow->style,
 386         GTK_PIZZA(win->m_wxwindow)->bin_window,
 387         GTK_STATE_NORMAL,
 388         GTK_SHADOW_OUT,
 389         (GdkRectangle*) NULL,
 390         win->m_wxwindow,
 391         (char *)"paned", // const_cast
 392         isVert ? position : size.x - 2*SASH_SIZE,
 393         isVert ? size.y - 2*SASH_SIZE : position,
 394         SASH_SIZE, SASH_SIZE
 395     );
 396 #endif // GTK+ 2.x/1.x
 397 }
 398