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 license
  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 #ifndef WX_PRECOMP
  28 #endif // WX_PRECOMP
  29
  30 #include <gtk/gtk.h>
  31 #include "wx/gtk/win_gtk.h"
  32
  33 #include "wx/window.h"
  34 #include "wx/dc.h"
  35 #include "wx/renderer.h"
  36
  37 #ifdef __WXGTK20__
  38     #include "wx/settings.h"
  39 #endif // GTK 2.0
  40
  41 #ifdef __WXGTK20__
  42     #define WXUNUSED_IN_GTK1(arg) arg
  43 #else
  44     #define WXUNUSED_IN_GTK1(arg)
  45 #endif
  46
  47 // ----------------------------------------------------------------------------
  48 // wxRendererGTK: our wxRendererNative implementation
  49 // ----------------------------------------------------------------------------
  50
  51 class WXDLLEXPORT wxRendererGTK : public wxDelegateRendererNative
  52 {
  53 public:
  54     // draw the header control button (used by wxListCtrl)
  55     virtual void DrawHeaderButton(wxWindow *win,
  56                                   wxDC& dc,
  57                                   const wxRect& rect,
  58                                   int flags = 0);
  59
  60 #ifdef __WXGTK20__
  61     // draw the expanded/collapsed icon for a tree control item
  62     virtual void DrawTreeItemButton(wxWindow *win,
  63                                     wxDC& dc,
  64                                     const wxRect& rect,
  65                                     int flags = 0);
  66 #endif // GTK 2.0
  67
  68     virtual void DrawSplitterBorder(wxWindow *win,
  69                                     wxDC& dc,
  70                                     const wxRect& rect,
  71                                     int flags = 0);
  72     virtual void DrawSplitterSash(wxWindow *win,
  73                                   wxDC& dc,
  74                                   const wxSize& size,
  75                                   wxCoord position,
  76                                   wxOrientation orient,
  77                                   int flags = 0);
  78
  79     virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
  80 };
  81
  82 // ============================================================================
  83 // implementation
  84 // ============================================================================
  85
  86 /* static */
  87 wxRendererNative& wxRendererNative::GetDefault()
  88 {
  89     static wxRendererGTK s_rendererGTK;
  90
  91     return s_rendererGTK;
  92 }
  93
  94 // ----------------------------------------------------------------------------
  95 // list/tree controls drawing
  96 // ----------------------------------------------------------------------------
  97
  98 void
  99 wxRendererGTK::DrawHeaderButton(wxWindow *win,
 100                                 wxDC& dc,
 101                                 const wxRect& rect,
 102                                 int flags)
 103 {
 104
 105     static GtkWidget *s_button = NULL;
 106     static GtkWidget *s_window = NULL;
 107     if (s_button == NULL)
 108     {
 109         s_window = gtk_window_new( GTK_WINDOW_POPUP );
 110     gtk_widget_realize( s_window );
 111     s_button = gtk_button_new();
 112     gtk_container_add( GTK_CONTAINER(s_window), s_button );
 113     gtk_widget_realize( s_button );
 114     }
 115
 116     gtk_paint_box
 117     (
 118     s_button->style,
 119         GTK_PIZZA(win->m_wxwindow)->bin_window,
 120         flags & wxCONTROL_DISABLED ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL,
 121         GTK_SHADOW_OUT,
 122     NULL,
 123         s_button,
 124         "button",
 125         dc.XLOG2DEV(rect.x) -1, rect.y -1, rect.width +2, rect.height +2
 126     );
 127 }
 128
 129 #ifdef __WXGTK20__
 130
 131 // draw a ">" or "v" button
 132 //
 133 // TODO: isn't there a GTK function to draw it?
 134 void
 135 wxRendererGTK::DrawTreeItemButton(wxWindow* win,
 136                                   wxDC& dc, const wxRect& rect, int flags)
 137 {
 138 #if 1
 139
 140 #define PM_SIZE 8
 141
 142     GtkPizza *pizza = GTK_PIZZA( win->m_wxwindow );
 143     GtkStyle *style = win->m_widget->style;
 144     int x = rect.x;
 145     int y = rect.y;
 146     y = dc.LogicalToDeviceY( y );
 147     x = dc.LogicalToDeviceX( x );
 148
 149 #if 1
 150     // This draws the GTK+ 2.2.4 triangle
 151     x--;
 152     GdkPoint points[3];
 153
 154     if ( flags & wxCONTROL_EXPANDED )
 155     {
 156         points[0].x = x;
 157         points[0].y = y + (PM_SIZE + 2) / 6;
 158         points[1].x = points[0].x + (PM_SIZE + 2);
 159         points[1].y = points[0].y;
 160         points[2].x = (points[0].x + (PM_SIZE + 2) / 2);
 161         points[2].y = y + 2 * (PM_SIZE + 2) / 3;
 162     }
 163     else
 164     {
 165         points[0].x = x + ((PM_SIZE + 2) / 6 + 2);
 166         points[0].y = y - 1;
 167         points[1].x = points[0].x;
 168         points[1].y = points[0].y + (PM_SIZE + 2);
 169         points[2].x = (points[0].x +
 170              (2 * (PM_SIZE + 2) / 3 - 1));
 171         points[2].y = points[0].y + (PM_SIZE + 2) / 2;
 172     }
 173
 174     if ( flags & wxCONTROL_CURRENT )
 175         gdk_draw_polygon( pizza->bin_window, style->fg_gc[GTK_STATE_PRELIGHT], TRUE, points, 3);
 176     else
 177         gdk_draw_polygon( pizza->bin_window, style->base_gc[GTK_STATE_NORMAL], TRUE, points, 3);
 178     gdk_draw_polygon( pizza->bin_window, style->fg_gc[GTK_STATE_NORMAL], FALSE, points, 3 );
 179 #else
 180     // this draws the GTK+ 2.2.3 tree item square
 181     gdk_draw_rectangle( pizza->bin_window,
 182         style->base_gc[GTK_STATE_NORMAL], TRUE,
 183         x, y, PM_SIZE, PM_SIZE);
 184     gdk_draw_rectangle( pizza->bin_window,
 185         style->fg_gc[GTK_STATE_NORMAL], FALSE,
 186         x, y, PM_SIZE, PM_SIZE);
 187
 188     gdk_draw_line( pizza->bin_window, style->fg_gc[GTK_STATE_NORMAL],
 189         x + 2, y + PM_SIZE / 2, x + PM_SIZE - 2, y + PM_SIZE / 2);
 190
 191     if ( flags & wxCONTROL_EXPANDED )
 192     {
 193         gdk_draw_line( pizza->bin_window, style->fg_gc[GTK_STATE_NORMAL],
 194                x + PM_SIZE / 2, y + 2,
 195                x + PM_SIZE / 2, y + PM_SIZE - 2);
 196     }
 197 #endif
 198
 199
 200 #else
 201     dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT),
 202                         wxSOLID));
 203     dc.SetPen(*wxBLACK_PEN);
 204     wxPoint button[3];
 205
 206     const wxCoord xMiddle = rect.x + rect.width/2;
 207     const wxCoord yMiddle = rect.y + rect.height/2;
 208
 209     if ( flags & wxCONTROL_EXPANDED )
 210     {
 211         button[0].x = rect.GetLeft();
 212         button[0].y = yMiddle - 2;
 213         button[1].x = rect.GetRight();
 214         button[1].y = yMiddle - 2;
 215         button[2].x = xMiddle;
 216         button[2].y = yMiddle + 3;
 217     }
 218     else // collapsed
 219     {
 220         button[0].y = rect.GetBottom();
 221         button[0].x = xMiddle - 2;
 222         button[1].y = rect.GetTop();
 223         button[1].x = xMiddle - 2;
 224         button[2].y = yMiddle;
 225         button[2].x = xMiddle + 3;
 226     }
 227
 228     dc.DrawPolygon(3, button);
 229 #endif
 230 }
 231
 232 #endif // GTK 2.0
 233
 234 // ----------------------------------------------------------------------------
 235 // splitter sash drawing
 236 // ----------------------------------------------------------------------------
 237
 238 // all this should probably be read from the current theme settings somehow?
 239 #ifdef __WXGTK20__
 240     // the full sash size
 241     static const wxCoord SASH_FULL_SIZE = 5;
 242 #else // GTK+ 1.x
 243     // the full sash width (should be even)
 244     static const wxCoord SASH_SIZE = 8;
 245
 246     // margin around the sash
 247     static const wxCoord SASH_MARGIN = 2;
 248
 249     // the full sash size
 250     static const wxCoord SASH_FULL_SIZE = SASH_SIZE + SASH_MARGIN;
 251 #endif // GTK+ 2.x/1.x
 252
 253 wxSplitterRenderParams
 254 wxRendererGTK::GetSplitterParams(const wxWindow * WXUNUSED(win))
 255 {
 256     // we don't draw any border, hence 0 for the second field
 257     return wxSplitterRenderParams
 258            (
 259                SASH_FULL_SIZE,
 260                0,
 261 #ifdef __WXGTK20__
 262                true     // hot sensitive
 263 #else // GTK+ 1.x
 264                false    // not
 265 #endif // GTK+ 2.x/1.x
 266            );
 267 }
 268
 269 void
 270 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
 271                                   wxDC& WXUNUSED(dc),
 272                                   const wxRect& WXUNUSED(rect),
 273                                   int WXUNUSED(flags))
 274 {
 275     // nothing to do
 276 }
 277
 278 void
 279 wxRendererGTK::DrawSplitterSash(wxWindow *win,
 280                                 wxDC& dc,
 281                                 const wxSize& size,
 282                                 wxCoord position,
 283                                 wxOrientation orient,
 284                                 int WXUNUSED_IN_GTK1(flags))
 285 {
 286     if ( !win->m_wxwindow->window )
 287     {
 288         // VZ: this happens on startup -- why?
 289         return;
 290     }
 291
 292     // are we drawing vertical or horizontal splitter?
 293     const bool isVert = orient == wxVERTICAL;
 294
 295     GdkRectangle rect;
 296     GdkRectangle erase_rect;
 297     if ( isVert )
 298     {
 299     int h = win->GetClientSize().GetHeight();
 300
 301         rect.x = position;
 302         rect.y = h/2 - 14/2;
 303         rect.width = SASH_FULL_SIZE;
 304         rect.height = 14;
 305
 306         erase_rect.x = position;
 307         erase_rect.y = 0;
 308         erase_rect.width = SASH_FULL_SIZE;
 309         erase_rect.height = h;
 310     }
 311     else // horz
 312     {
 313     int w = win->GetClientSize().GetWidth();
 314
 315         rect.x = w/2 - 14/2;
 316         rect.y = position;
 317         rect.height = SASH_FULL_SIZE;
 318         rect.width = 14;
 319
 320         erase_rect.y = position;
 321         erase_rect.x = 0;
 322         erase_rect.height = SASH_FULL_SIZE;
 323         erase_rect.width = w;
 324     }
 325
 326     // we must erase everything first, otherwise the garbage from the old sash
 327     // is left when dragging it
 328     //
 329     // TODO: is this the right way to draw themed background?
 330     gtk_paint_flat_box
 331     (
 332         win->m_wxwindow->style,
 333         GTK_PIZZA(win->m_wxwindow)->bin_window,
 334         GTK_STATE_NORMAL,
 335         GTK_SHADOW_NONE,
 336         NULL,
 337         win->m_wxwindow,
 338         (char *)"base", // const_cast
 339         erase_rect.x,
 340         erase_rect.y,
 341         erase_rect.width,
 342         erase_rect.height
 343     );
 344
 345 #ifdef __WXGTK20__
 346     gtk_paint_handle
 347     (
 348         win->m_wxwindow->style,
 349         GTK_PIZZA(win->m_wxwindow)->bin_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         rect.x,
 356         rect.y,
 357         rect.width,
 358         rect.height,
 359         !isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
 360     );
 361 #else // GTK+ 1.x
 362
 363     // leave some margin before sash itself
 364     position += SASH_MARGIN / 2;
 365
 366     // and finally draw it using GTK paint functions
 367     typedef void (*GtkPaintLineFunc)(GtkStyle *, GdkWindow *,
 368                                                 GtkStateType,
 369                                                 GdkRectangle *, GtkWidget *,
 370                                                 gchar *,
 371                                                 gint, gint, gint);
 372
 373     GtkPaintLineFunc func = isVert ? gtk_paint_vline : gtk_paint_hline;
 374
 375     (*func)
 376     (
 377         win->m_wxwindow->style,
 378         GTK_PIZZA(win->m_wxwindow)->bin_window,
 379         GTK_STATE_NORMAL,
 380         NULL,
 381         win->m_wxwindow,
 382         (char *)"paned", // const_cast
 383         0, isVert ? size.y : size.x, position + SASH_SIZE / 2 - 1
 384     );
 385
 386     gtk_paint_box
 387     (
 388         win->m_wxwindow->style,
 389         GTK_PIZZA(win->m_wxwindow)->bin_window,
 390         GTK_STATE_NORMAL,
 391         GTK_SHADOW_OUT,
 392         (GdkRectangle*) NULL,
 393         win->m_wxwindow,
 394         (char *)"paned", // const_cast
 395         isVert ? position : size.x - 2*SASH_SIZE,
 396         isVert ? size.y - 2*SASH_SIZE : position,
 397         SASH_SIZE, SASH_SIZE
 398     );
 399 #endif // GTK+ 2.x/1.x
 400 }
 401