src/generic/renderg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/renderg.cpp
   3 // Purpose:     generic implementation of wxRendererNative (for any platform)
   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     #include "wx/string.h"
  29 #endif //WX_PRECOMP
  30
  31 #include "wx/gdicmn.h"
  32 #include "wx/dc.h"
  33
  34 #include "wx/settings.h"
  35 #include "wx/splitter.h"
  36 #include "wx/dcmirror.h"
  37 #include "wx/module.h"
  38 #include "wx/renderer.h"
  39
  40 // ----------------------------------------------------------------------------
  41 // wxRendererGeneric: our wxRendererNative implementation
  42 // ----------------------------------------------------------------------------
  43
  44 class WXDLLEXPORT wxRendererGeneric : public wxRendererNative
  45 {
  46 public:
  47     wxRendererGeneric();
  48
  49     virtual void DrawHeaderButton(wxWindow *win,
  50                                   wxDC& dc,
  51                                   const wxRect& rect,
  52                                   int flags = 0);
  53
  54     virtual void DrawTreeItemButton(wxWindow *win,
  55                                     wxDC& dc,
  56                                     const wxRect& rect,
  57                                     int flags = 0);
  58
  59     virtual void DrawSplitterBorder(wxWindow *win,
  60                                     wxDC& dc,
  61                                     const wxRect& rect,
  62                                     int flags = 0);
  63
  64     virtual void DrawSplitterSash(wxWindow *win,
  65                                   wxDC& dc,
  66                                   const wxSize& size,
  67                                   wxCoord position,
  68                                   wxOrientation orient,
  69                                   int flags = 0);
  70
  71     virtual void DrawComboBoxDropButton(wxWindow *win,
  72                                         wxDC& dc,
  73                                         const wxRect& rect,
  74                                         int flags = 0);
  75
  76
  77     virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win);
  78
  79     virtual wxRendererVersion GetVersion() const
  80     {
  81         return wxRendererVersion(wxRendererVersion::Current_Version,
  82                                  wxRendererVersion::Current_Age);
  83     }
  84
  85
  86     // Cleanup by deleting standard renderer
  87     static void Cleanup();
  88
  89     // Get the generic object
  90     static wxRendererGeneric* DoGetGeneric();
  91
  92 protected:
  93     // draw the rectange using the first pen for the left and top sides and
  94     // the second one for the bottom and right ones
  95     void DrawShadedRect(wxDC& dc, wxRect *rect,
  96                         const wxPen& pen1, const wxPen& pen2);
  97
  98     // the standard pens
  99     wxPen m_penBlack,
 100           m_penDarkGrey,
 101           m_penLightGrey,
 102           m_penHighlight;
 103
 104     static wxRendererGeneric* sm_rendererGeneric;
 105 };
 106
 107 // ============================================================================
 108 // wxRendererGeneric implementation
 109 // ============================================================================
 110
 111 // Get the generic object
 112 wxRendererGeneric* wxRendererGeneric::DoGetGeneric()
 113 {
 114     if (!sm_rendererGeneric)
 115         sm_rendererGeneric = new wxRendererGeneric;
 116     return sm_rendererGeneric;
 117 }
 118
 119 // ----------------------------------------------------------------------------
 120 // wxRendererGeneric creation
 121 // ----------------------------------------------------------------------------
 122
 123 /* static */
 124 wxRendererNative& wxRendererNative::GetGeneric()
 125 {
 126     return * wxRendererGeneric::DoGetGeneric();
 127 }
 128
 129 void wxRendererGeneric::Cleanup()
 130 {
 131     if (sm_rendererGeneric)
 132         delete sm_rendererGeneric;
 133
 134     sm_rendererGeneric = NULL;
 135 }
 136
 137 wxRendererGeneric* wxRendererGeneric::sm_rendererGeneric = NULL;
 138
 139 wxRendererGeneric::wxRendererGeneric()
 140     : m_penBlack(wxSystemSettings::GetColour(wxSYS_COLOUR_3DDKSHADOW)),
 141       m_penDarkGrey(wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW)),
 142       m_penLightGrey(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)),
 143       m_penHighlight(wxSystemSettings::GetColour(wxSYS_COLOUR_3DHIGHLIGHT))
 144 {
 145 }
 146
 147 // ----------------------------------------------------------------------------
 148 // wxRendererGeneric helpers
 149 // ----------------------------------------------------------------------------
 150
 151 void
 152 wxRendererGeneric::DrawShadedRect(wxDC& dc,
 153                                   wxRect *rect,
 154                                   const wxPen& pen1,
 155                                   const wxPen& pen2)
 156 {
 157     // draw the rectangle
 158     dc.SetPen(pen1);
 159     dc.DrawLine(rect->GetLeft(), rect->GetTop(),
 160                 rect->GetLeft(), rect->GetBottom());
 161     dc.DrawLine(rect->GetLeft() + 1, rect->GetTop(),
 162                 rect->GetRight(), rect->GetTop());
 163     dc.SetPen(pen2);
 164     dc.DrawLine(rect->GetRight(), rect->GetTop(),
 165                 rect->GetRight(), rect->GetBottom());
 166     dc.DrawLine(rect->GetLeft(), rect->GetBottom(),
 167                 rect->GetRight() + 1, rect->GetBottom());
 168
 169     // adjust the rect
 170     rect->Inflate(-1);
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // tree/list ctrl drawing
 175 // ----------------------------------------------------------------------------
 176
 177 void
 178 wxRendererGeneric::DrawHeaderButton(wxWindow * WXUNUSED(win),
 179                                     wxDC& dc,
 180                                     const wxRect& rect,
 181                                     int WXUNUSED(flags))
 182 {
 183     const int CORNER = 1;
 184
 185     const wxCoord x = rect.x,
 186                   y = rect.y,
 187                   w = rect.width,
 188                   h = rect.height;
 189
 190     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 191
 192     dc.SetPen(m_penBlack);
 193     dc.DrawLine( x+w-CORNER+1, y, x+w, y+h );  // right (outer)
 194     dc.DrawRectangle( x, y+h, w+1, 1 );        // bottom (outer)
 195
 196     dc.SetPen(m_penDarkGrey);
 197     dc.DrawLine( x+w-CORNER, y, x+w-1, y+h );  // right (inner)
 198     dc.DrawRectangle( x+1, y+h-1, w-2, 1 );    // bottom (inner)
 199
 200     dc.SetPen(m_penHighlight);
 201     dc.DrawRectangle( x, y, w-CORNER+1, 1 );   // top (outer)
 202     dc.DrawRectangle( x, y, 1, h );            // left (outer)
 203     dc.DrawLine( x, y+h-1, x+1, y+h-1 );
 204     dc.DrawLine( x+w-1, y, x+w-1, y+1 );
 205 }
 206
 207 // draw the plus or minus sign
 208 void
 209 wxRendererGeneric::DrawTreeItemButton(wxWindow * WXUNUSED(win),
 210                                       wxDC& dc,
 211                                       const wxRect& rect,
 212                                       int flags)
 213 {
 214     // white background
 215     dc.SetPen(*wxGREY_PEN);
 216     dc.SetBrush(*wxWHITE_BRUSH);
 217     dc.DrawRectangle(rect);
 218
 219     // black lines
 220     const wxCoord xMiddle = rect.x + rect.width/2;
 221     const wxCoord yMiddle = rect.y + rect.height/2;
 222
 223     // half of the length of the horz lines in "-" and "+"
 224     const wxCoord halfWidth = rect.width/2 - 2;
 225     dc.SetPen(*wxBLACK_PEN);
 226     dc.DrawLine(xMiddle - halfWidth, yMiddle,
 227                 xMiddle + halfWidth + 1, yMiddle);
 228
 229     if ( !(flags & wxCONTROL_EXPANDED) )
 230     {
 231         // turn "-" into "+"
 232         const wxCoord halfHeight = rect.height/2 - 2;
 233         dc.DrawLine(xMiddle, yMiddle - halfHeight,
 234                     xMiddle, yMiddle + halfHeight + 1);
 235     }
 236 }
 237
 238 // ----------------------------------------------------------------------------
 239 // sash drawing
 240 // ----------------------------------------------------------------------------
 241
 242 wxSplitterRenderParams
 243 wxRendererGeneric::GetSplitterParams(const wxWindow *win)
 244 {
 245     // see below
 246     wxCoord sashWidth,
 247             border;
 248
 249     if ( win->HasFlag(wxSP_3DSASH) )
 250         sashWidth = 7;
 251     else if ( win->HasFlag(wxSP_NOSASH) )
 252         sashWidth = 0;
 253     else // no 3D effect
 254         sashWidth = 3;
 255
 256     if ( win->HasFlag(wxSP_3DBORDER) )
 257         border = 2;
 258     else // no 3D effect
 259         border = 0;
 260
 261     return wxSplitterRenderParams(sashWidth, border, false);
 262 }
 263
 264 void
 265 wxRendererGeneric::DrawSplitterBorder(wxWindow *win,
 266                                       wxDC& dc,
 267                                       const wxRect& rectOrig,
 268                                       int WXUNUSED(falgs))
 269 {
 270     if ( win->HasFlag(wxSP_3DBORDER) )
 271     {
 272         wxRect rect = rectOrig;
 273         DrawShadedRect(dc, &rect, m_penDarkGrey, m_penHighlight);
 274         DrawShadedRect(dc, &rect, m_penBlack, m_penLightGrey);
 275     }
 276 }
 277
 278 void
 279 wxRendererGeneric::DrawSplitterSash(wxWindow *win,
 280                                     wxDC& dcReal,
 281                                     const wxSize& sizeReal,
 282                                     wxCoord position,
 283                                     wxOrientation orient,
 284                                     int WXUNUSED(flags))
 285 {
 286     // to avoid duplicating the same code for horizontal and vertical sashes,
 287     // simply mirror the DC instead if needed (i.e. if horz splitter)
 288     wxMirrorDC dc(dcReal, orient != wxVERTICAL);
 289     wxSize size = dc.Reflect(sizeReal);
 290
 291
 292     // we draw a Win32-like grey sash with possible 3D border here:
 293     //
 294     //   ---- this is position
 295     //  /
 296     // v
 297     // dWGGGDd
 298     // GWGGGDB
 299     // GWGGGDB  where G is light grey (face)
 300     // GWGGGDB        W    white      (light)
 301     // GWGGGDB        D    dark grey  (shadow)
 302     // GWGGGDB        B    black      (dark shadow)
 303     // GWGGGDB
 304     // GWGGGDB  and lower letters are our border (already drawn)
 305     // GWGGGDB
 306     // wWGGGDd
 307     //
 308     // only the middle 3 columns are drawn unless wxSP_3D is specified
 309
 310     const wxCoord h = size.y;
 311     wxCoord offset = 0;
 312
 313     // If we're drawing the border, draw the sash 3d lines shorter
 314     if ( win->HasFlag(wxSP_3DBORDER) )
 315     {
 316         offset = 1;
 317     }
 318
 319     dc.SetPen(*wxTRANSPARENT_PEN);
 320     dc.SetBrush(wxBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE)));
 321
 322     if ( win->HasFlag(wxSP_3DSASH) )
 323     {
 324         // Draw the 3D sash
 325         dc.DrawRectangle(position + 2, 0, 3, h);
 326
 327         dc.SetPen(m_penLightGrey);
 328         dc.DrawLine(position, offset, position, h - offset);
 329
 330         dc.SetPen(m_penHighlight);
 331         dc.DrawLine(position + 1, 0, position + 1, h);
 332
 333         dc.SetPen(m_penDarkGrey);
 334         dc.DrawLine(position + 5, 0, position + 5, h);
 335
 336         dc.SetPen(m_penBlack);
 337         dc.DrawLine(position + 6, offset, position + 6, h - offset);
 338     }
 339     else
 340     {
 341         // Draw a flat sash
 342         dc.DrawRectangle(position, 0, 3, h);
 343     }
 344 }
 345
 346 void
 347 wxRendererGeneric::DrawComboBoxDropButton(wxWindow *win,
 348                                           wxDC& dc,
 349                                           const wxRect& rect,
 350                                           int WXUNUSED(flags))
 351 {
 352     dc.SetBrush(wxBrush(win->GetBackgroundColour()));
 353     dc.SetPen(wxPen(win->GetBackgroundColour()));
 354     dc.DrawRectangle(rect);
 355
 356     wxPoint pt[] =
 357     {
 358         wxPoint(),
 359         wxPoint(rect.width, 0),
 360         wxPoint(rect.width/2, rect.height - 2)
 361     };
 362     dc.SetBrush(wxBrush(win->GetForegroundColour()));
 363     dc.SetPen(wxPen(win->GetForegroundColour()));
 364     dc.DrawPolygon(WXSIZEOF(pt), pt, rect.x, rect.y);
 365 }
 366
 367
 368 // ----------------------------------------------------------------------------
 369 // A module to allow cleanup of generic renderer.
 370 // ----------------------------------------------------------------------------
 371
 372 class wxGenericRendererModule: public wxModule
 373 {
 374 DECLARE_DYNAMIC_CLASS(wxGenericRendererModule)
 375 public:
 376     wxGenericRendererModule() {}
 377     bool OnInit() { return true; };
 378     void OnExit() { wxRendererGeneric::Cleanup(); };
 379 };
 380
 381 IMPLEMENT_DYNAMIC_CLASS(wxGenericRendererModule, wxModule)
 382