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 // ----------------------------------------------------------------------------
  42 // wxRendererGTK: our wxRendererNative implementation
  43 // ----------------------------------------------------------------------------
  44
  45 class WXDLLEXPORT wxRendererGTK : public wxDelegateRendererNative
  46 {
  47 public:
  48     // draw the header control button (used by wxListCtrl)
  49     virtual void DrawHeaderButton(wxWindow *win,
  50                                   wxDC& dc,
  51                                   const wxRect& rect,
  52                                   int flags = 0);
  53
  54 #ifdef __WXGTK20__
  55     // draw the expanded/collapsed icon for a tree control item
  56     virtual void DrawTreeItemButton(wxWindow *win,
  57                                     wxDC& dc,
  58                                     const wxRect& rect,
  59                                     int flags = 0);
  60 #endif // GTK 2.0
  61
  62     virtual void DrawSplitterBorder(wxWindow *win,
  63                                     wxDC& dc,
  64                                     const wxRect& rect) ;
  65     virtual void DrawSplitterSash(wxWindow *win,
  66                                   wxDC& dc,
  67                                   const wxSize& size,
  68                                   wxCoord position,
  69                                   wxOrientation orient);
  70
  71     virtual wxPoint GetSplitterSashAndBorder(const wxWindow *win);
  72 };
  73
  74 // ============================================================================
  75 // implementation
  76 // ============================================================================
  77
  78 /* static */
  79 wxRendererNative& wxRendererNative::Get()
  80 {
  81     static wxRendererGTK s_rendererGTK;
  82
  83     return s_rendererGTK;
  84 }
  85
  86 // ----------------------------------------------------------------------------
  87 // list/tree controls drawing
  88 // ----------------------------------------------------------------------------
  89
  90 void
  91 wxRendererGTK::DrawHeaderButton(wxWindow *win,
  92                                 wxDC& dc,
  93                                 const wxRect& rect,
  94                                 int flags)
  95 {
  96     gtk_paint_box
  97     (
  98         win->m_wxwindow->style,
  99         GTK_PIZZA(win->m_wxwindow)->bin_window,
 100         flags & wxCONTROL_DISABLED ? GTK_STATE_INSENSITIVE : GTK_STATE_NORMAL,
 101         GTK_SHADOW_OUT,
 102         (GdkRectangle*) NULL,
 103         win->m_wxwindow,
 104         (char *)"button", // const_cast
 105         dc.XLOG2DEV(rect.x) - 1, rect.y - 1, rect.width + 2, rect.height + 2
 106     );
 107 }
 108
 109 #ifdef __WXGTK20__
 110
 111 // draw a ">" or "v" button
 112 //
 113 // TODO: isn't there a GTK function to draw it?
 114 void
 115 wxRendererGTK::DrawTreeItemButton(wxWindow* WXUNUSED(win),
 116                                   wxDC& dc, const wxRect& rect, int flags)
 117 {
 118     dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT),
 119                         wxSOLID));
 120     dc.SetPen(*wxBLACK_PEN);
 121     wxPoint button[3];
 122
 123     const wxCoord xMiddle = rect.x + rect.width/2;
 124     const wxCoord yMiddle = rect.y + rect.height/2;
 125
 126     if ( flags & wxCONTROL_EXPANDED )
 127     {
 128         button[0].x = rect.GetLeft();
 129         button[0].y = yMiddle - 2;
 130         button[1].x = rect.GetRight();
 131         button[1].y = yMiddle - 2;
 132         button[2].x = xMiddle;
 133         button[2].y = yMiddle + 3;
 134     }
 135     else // collapsed
 136     {
 137         button[0].y = rect.GetBottom();
 138         button[0].x = xMiddle - 2;
 139         button[1].y = rect.GetTop();
 140         button[1].x = xMiddle - 2;
 141         button[2].y = yMiddle;
 142         button[2].x = xMiddle + 3;
 143     }
 144
 145     dc.DrawPolygon(3, button);
 146 }
 147
 148 #endif // GTK 2.0
 149
 150 // ----------------------------------------------------------------------------
 151 // splitter sash drawing
 152 // ----------------------------------------------------------------------------
 153
 154 // the full sash width (should be even)
 155 static const wxCoord SASH_SIZE = 10;
 156
 157 // margin around the sash
 158 static const wxCoord SASH_MARGIN = 5;
 159
 160 wxPoint
 161 wxRendererGTK::GetSplitterSashAndBorder(const wxWindow * WXUNUSED(win))
 162 {
 163     // we don't draw any border, hence 0 for the second field, but we must
 164     // leave some margin around the sash
 165     return wxPoint(SASH_SIZE + SASH_MARGIN, 0);
 166 }
 167
 168 void
 169 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
 170                                   wxDC& WXUNUSED(dc),
 171                                   const wxRect& WXUNUSED(rect))
 172 {
 173     // nothing to do
 174 }
 175
 176 void
 177 wxRendererGTK::DrawSplitterSash(wxWindow *win,
 178                                 wxDC& dc,
 179                                 const wxSize& size,
 180                                 wxCoord position,
 181                                 wxOrientation orient)
 182 {
 183     if ( !win->m_wxwindow->window )
 184     {
 185         // VZ: this happens on startup -- why?
 186         return;
 187     }
 188
 189     // are we drawing vertical or horizontal splitter?
 190     const bool isVert = orient == wxVERTICAL;
 191
 192     // we must erase everything first, otherwise the garbage from the old sash
 193     // is left when dragging it
 194     //
 195     // TODO: is this the right way to draw themed background?
 196     GdkRectangle rect;
 197     if ( isVert )
 198     {
 199         rect.x = position;
 200         rect.y = 0;
 201         rect.width = SASH_SIZE + SASH_MARGIN;
 202         rect.height = size.y;
 203     }
 204     else // horz
 205     {
 206         rect.x = 0;
 207         rect.y = position;
 208         rect.height = SASH_SIZE + SASH_MARGIN;
 209         rect.width = size.x;
 210     }
 211
 212     gtk_paint_flat_box
 213     (
 214         win->m_wxwindow->style,
 215         GTK_PIZZA(win->m_wxwindow)->bin_window,
 216         GTK_STATE_NORMAL,
 217         GTK_SHADOW_NONE,
 218         &rect,
 219         win->m_wxwindow,
 220         (char *)"base", // const_cast
 221         0, 0, -1, -1
 222     );
 223
 224
 225     // leave some margin before sash itself
 226     position += SASH_MARGIN / 2;
 227
 228     // and finally draw it using GTK paint functions
 229     typedef void (*GtkPaintLineFunc)(GtkStyle *, GdkWindow *,
 230                                                 GtkStateType,
 231                                                 GdkRectangle *, GtkWidget *,
 232                                                 gchar *, gint, gint, gint);
 233
 234     GtkPaintLineFunc func = isVert ? gtk_paint_vline : gtk_paint_hline;
 235
 236     (*func)
 237     (
 238         win->m_wxwindow->style,
 239         GTK_PIZZA(win->m_wxwindow)->bin_window,
 240         GTK_STATE_NORMAL,
 241         NULL,
 242         win->m_wxwindow,
 243         (char *)"paned", // const_cast
 244         0, isVert ? size.y : size.x, position + SASH_SIZE / 2 - 1
 245     );
 246
 247     gtk_paint_box
 248     (
 249         win->m_wxwindow->style,
 250         GTK_PIZZA(win->m_wxwindow)->bin_window,
 251         GTK_STATE_NORMAL,
 252         GTK_SHADOW_OUT,
 253         (GdkRectangle*) NULL,
 254         win->m_wxwindow,
 255         (char *)"paned", // const_cast
 256         isVert ? position : size.x - 2*SASH_SIZE,
 257         isVert ? size.y - 2*SASH_SIZE : position,
 258         SASH_SIZE, SASH_SIZE
 259     );
 260 }
 261