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* WXUNUSED(win),
 136                                   wxDC& dc, const wxRect& rect, int flags)
 137 {
 138     dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT),
 139                         wxSOLID));
 140     dc.SetPen(*wxBLACK_PEN);
 141     wxPoint button[3];
 142
 143     const wxCoord xMiddle = rect.x + rect.width/2;
 144     const wxCoord yMiddle = rect.y + rect.height/2;
 145
 146     if ( flags & wxCONTROL_EXPANDED )
 147     {
 148         button[0].x = rect.GetLeft();
 149         button[0].y = yMiddle - 2;
 150         button[1].x = rect.GetRight();
 151         button[1].y = yMiddle - 2;
 152         button[2].x = xMiddle;
 153         button[2].y = yMiddle + 3;
 154     }
 155     else // collapsed
 156     {
 157         button[0].y = rect.GetBottom();
 158         button[0].x = xMiddle - 2;
 159         button[1].y = rect.GetTop();
 160         button[1].x = xMiddle - 2;
 161         button[2].y = yMiddle;
 162         button[2].x = xMiddle + 3;
 163     }
 164
 165     dc.DrawPolygon(3, button);
 166 }
 167
 168 #endif // GTK 2.0
 169
 170 // ----------------------------------------------------------------------------
 171 // splitter sash drawing
 172 // ----------------------------------------------------------------------------
 173
 174 // all this should probably be read from the current theme settings somehow?
 175 #ifdef __WXGTK20__
 176     // the full sash size
 177     static const wxCoord SASH_FULL_SIZE = 5;
 178 #else // GTK+ 1.x
 179     // the full sash width (should be even)
 180     static const wxCoord SASH_SIZE = 10;
 181
 182     // margin around the sash
 183     static const wxCoord SASH_MARGIN = 5;
 184
 185     // the full sash size
 186     static const wxCoord SASH_FULL_SIZE = SASH_SIZE + SASH_MARGIN;
 187 #endif // GTK+ 2.x/1.x
 188
 189 wxSplitterRenderParams
 190 wxRendererGTK::GetSplitterParams(const wxWindow * WXUNUSED(win))
 191 {
 192     // we don't draw any border, hence 0 for the second field
 193     return wxSplitterRenderParams
 194            (
 195                SASH_FULL_SIZE,
 196                0,
 197 #ifdef __WXGTK20__
 198                true     // hot sensitive
 199 #else // GTK+ 1.x
 200                false    // not
 201 #endif // GTK+ 2.x/1.x
 202            );
 203 }
 204
 205 void
 206 wxRendererGTK::DrawSplitterBorder(wxWindow * WXUNUSED(win),
 207                                   wxDC& WXUNUSED(dc),
 208                                   const wxRect& WXUNUSED(rect),
 209                                   int WXUNUSED(flags))
 210 {
 211     // nothing to do
 212 }
 213
 214 void
 215 wxRendererGTK::DrawSplitterSash(wxWindow *win,
 216                                 wxDC& dc,
 217                                 const wxSize& size,
 218                                 wxCoord position,
 219                                 wxOrientation orient,
 220                                 int WXUNUSED_IN_GTK1(flags))
 221 {
 222     if ( !win->m_wxwindow->window )
 223     {
 224         // VZ: this happens on startup -- why?
 225         return;
 226     }
 227
 228     // are we drawing vertical or horizontal splitter?
 229     const bool isVert = orient == wxVERTICAL;
 230
 231     GdkRectangle rect;
 232     if ( isVert )
 233     {
 234         rect.x = position;
 235         rect.y = 0;
 236         rect.width = SASH_FULL_SIZE;
 237         rect.height = size.y;
 238     }
 239     else // horz
 240     {
 241         rect.x = 0;
 242         rect.y = position;
 243         rect.height = SASH_FULL_SIZE;
 244         rect.width = size.x;
 245     }
 246
 247 #ifdef __WXGTK20__
 248     gtk_paint_handle
 249     (
 250         win->m_wxwindow->style,
 251         GTK_PIZZA(win->m_wxwindow)->bin_window,
 252         flags & wxCONTROL_CURRENT ? GTK_STATE_PRELIGHT : GTK_STATE_NORMAL,
 253         GTK_SHADOW_NONE,
 254         NULL /* no clipping */,
 255         win->m_wxwindow,
 256         "paned",
 257         rect.x,
 258         rect.y,
 259         rect.width,
 260         rect.height,
 261         isVert ? GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL
 262     );
 263 #else // GTK+ 1.x
 264     // we must erase everything first, otherwise the garbage from the old sash
 265     // is left when dragging it
 266     //
 267     // TODO: is this the right way to draw themed background?
 268     gtk_paint_flat_box
 269     (
 270         win->m_wxwindow->style,
 271         GTK_PIZZA(win->m_wxwindow)->bin_window,
 272         GTK_STATE_NORMAL,
 273         GTK_SHADOW_NONE,
 274         &rect,
 275         win->m_wxwindow,
 276         (char *)"base", // const_cast
 277         0, 0, -1, -1
 278     );
 279
 280
 281     // leave some margin before sash itself
 282     position += SASH_MARGIN / 2;
 283
 284     // and finally draw it using GTK paint functions
 285     typedef void (*GtkPaintLineFunc)(GtkStyle *, GdkWindow *,
 286                                                 GtkStateType,
 287                                                 GdkRectangle *, GtkWidget *,
 288                                                 gchar *,
 289                                                 gint, gint, gint);
 290
 291     GtkPaintLineFunc func = isVert ? gtk_paint_vline : gtk_paint_hline;
 292
 293     (*func)
 294     (
 295         win->m_wxwindow->style,
 296         GTK_PIZZA(win->m_wxwindow)->bin_window,
 297         GTK_STATE_NORMAL,
 298         NULL,
 299         win->m_wxwindow,
 300         (char *)"paned", // const_cast
 301         0, isVert ? size.y : size.x, position + SASH_SIZE / 2 - 1
 302     );
 303
 304     gtk_paint_box
 305     (
 306         win->m_wxwindow->style,
 307         GTK_PIZZA(win->m_wxwindow)->bin_window,
 308         GTK_STATE_NORMAL,
 309         GTK_SHADOW_OUT,
 310         (GdkRectangle*) NULL,
 311         win->m_wxwindow,
 312         (char *)"paned", // const_cast
 313         isVert ? position : size.x - 2*SASH_SIZE,
 314         isVert ? size.y - 2*SASH_SIZE : position,
 315         SASH_SIZE, SASH_SIZE
 316     );
 317 #endif // GTK+ 2.x/1.x
 318 }
 319