utils/screenshotgen/src/autocapture.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        autocapture.cpp
   3 // Purpose:     Implement wxCtrlMaskOut class
   4 // Author:      Utensil Candel (UtensilCandel@@gmail.com)
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 // For compilers that support precompilation, includes "wx/wx.h".
  10 #include "wx/wxprec.h"
  11
  12 #ifdef __BORLANDC__
  13     #pragma hdrstop
  14 #endif
  15
  16 // for all others, include the necessary headers
  17 #ifndef WX_PRECOMP
  18     #include "wx/wx.h"
  19 #endif
  20
  21 #include <wx/filename.h>
  22
  23 #include "autocapture.h"
  24
  25
  26 wxBitmap Capture(int x, int y, int width, int height)
  27 {
  28     //Somehow wxScreenDC.Blit() doesn't work under Mac for now. Here is a trick.
  29     #ifdef __WXMAC__
  30
  31     //wxExecute(_T("screencapture -x ") + tempfile, wxEXEC_SYNC);
  32
  33     system("screencapture -x /tmp/wx_screen_capture.png");
  34
  35     wxBitmap fullscreen;
  36
  37     do
  38     {
  39         fullscreen = wxBitmap(_T("/tmp/wx_screen_capture.png"), wxBITMAP_TYPE_PNG);
  40     }
  41     while(!fullscreen.IsOk());
  42
  43     wxBitmap screenshot = fullscreen.GetSubBitmap(wxRect(x,y,width,height));
  44
  45     #else //Under other paltforms, take a real screenshot
  46
  47     //Create a DC for the whole screen area
  48     wxScreenDC dcScreen;
  49
  50     //Create a Bitmap that will later on hold the screenshot image
  51     //Note that the Bitmap must have a size big enough to hold the screenshot
  52     //-1 means using the current default colour depth
  53     wxBitmap screenshot(width, height, -1);
  54
  55     //Create a memory DC that will be used for actually taking the screenshot
  56     wxMemoryDC memDC;
  57     //Tell the memory DC to use our Bitmap
  58     //all drawing action on the memory DC will go to the Bitmap now
  59     memDC.SelectObject(screenshot);
  60     //Blit (in this case copy) the actual screen on the memory DC
  61     //and thus the Bitmap
  62     memDC.Blit( 0, //Copy to this X coordinate
  63                 0, //Copy to this Y coordinate
  64                 width, //Copy this width
  65                 height, //Copy this height
  66                 &dcScreen, //From where do we copy?
  67                 x, //What's the X offset in the original DC?
  68                 y  //What's the Y offset in the original DC?
  69                     );
  70     //Select the Bitmap out of the memory DC by selecting a new
  71     //uninitialized Bitmap
  72     memDC.SelectObject(wxNullBitmap);
  73     #endif //#ifdef __WXMAC__
  74
  75 //    wxMessageBox(_(""),_(""));
  76
  77     return screenshot;
  78
  79 }
  80
  81 wxBitmap Capture(wxRect rect)
  82 {
  83     wxPoint origin = rect.GetPosition();
  84     return Capture(origin.x, origin.y, rect.GetWidth(), rect.GetHeight());
  85 }
  86
  87
  88 // ----------------------------------------------------------------------------
  89 // AutoCaptureMechanism
  90 // ----------------------------------------------------------------------------
  91
  92 wxBitmap AutoCaptureMechanism::Capture(Control & ctrl)
  93 {
  94     if(ctrl.name == wxT("")) //no mannual specification for the control name
  95     {
  96         //Get name from wxRTTI
  97         ctrl.name = ctrl.ctrl->GetClassInfo()->GetClassName();
  98     }
  99
 100     int choice = wxNO;
 101
 102     if(ctrl.flag & AJ_Dropdown)
 103     {
 104         wxString caption = _("Do you wish to capture the dropdown list of ") + ctrl.name + _("?");
 105         wxString notice = _("Click YES to capture it.\nAnd you MUST drop down the ") + ctrl.name + _(" in 3 seconds after close me.\n");
 106         notice += _("Click NO otherwise.");
 107
 108         choice = wxMessageBox(notice, caption, wxYES_NO, m_notebook);
 109
 110         if(choice == wxYES)
 111         {
 112             //Wait for 3 seconds
 113             using std::clock;
 114             using std::clock_t;
 115
 116             clock_t start = clock();
 117             while(clock() - start < CLOCKS_PER_SEC * 3)
 118             {
 119                 wxYieldIfNeeded();
 120             }
 121         }
 122     }
 123
 124     wxRect rect = GetRect(ctrl.ctrl, ctrl.flag);
 125
 126     //Do some rect adjust so it can include the dropdown list
 127     //Currently it only works well under MSW, not adjusted for Linux and Mac OS
 128     if(ctrl.flag & AJ_Dropdown && choice == wxYES)
 129     {
 130 //          #ifdef __WXMSW__
 131         int h = rect.GetHeight();
 132         rect.SetHeight(h * 4);
 133 //          #endif
 134     }
 135
 136     //cut off "wx" and change them into lowercase.
 137     // e.g. wxButton will have a name of "button" at the end
 138     ctrl.name.StartsWith(_T("wx"), &(ctrl.name));
 139     ctrl.name.MakeLower();
 140
 141     wxBitmap screenshot = ::Capture(rect);
 142
 143     if(ctrl.flag & AJ_RegionAdjust)
 144     {
 145         PutBack(ctrl.ctrl);
 146     }
 147
 148     return screenshot;
 149 }
 150
 151 //if AJ_RegionAdjust is specified, the following line will use the label trick to adjust
 152 //the region position and size
 153 wxRect GetRect(wxWindow* ctrl, int flag);
 154 //put the control back after the label trick(Using reparent/resizer approach)
 155 void PutBack(wxWindow * ctrl);
 156
 157 wxBitmap AutoCaptureMechanism::Union(wxBitmap pic1, wxBitmap pic2)
 158 {
 159     int w1, w2, h1, h2, w, h;
 160     w1 = pic1.GetWidth();
 161     w2 = pic2.GetWidth();
 162     h1 = pic1.GetHeight();
 163     h2 = pic2.GetHeight();
 164
 165     const int gap_between = 20;
 166
 167     w = (w1 >= w2) ? w1 : w2;
 168     h = h1 + h2 + gap_between;
 169
 170     wxBitmap result(w, h, -1);
 171
 172     wxMemoryDC dstDC;
 173     dstDC.SelectObject(result);
 174
 175     dstDC.DrawBitmap(pic1, 0, 0, false);
 176     dstDC.DrawBitmap(pic2, 0, h1 + gap_between, false);
 177
 178     dstDC.SelectObject(wxNullBitmap);
 179
 180     wxMemoryDC maskDC;
 181     wxBitmap mask(w, h, 1);
 182     maskDC.SelectObject(mask);
 183
 184     maskDC.SetPen(*wxTRANSPARENT_PEN);
 185     maskDC.SetBrush(*wxBLACK_BRUSH);
 186     maskDC.DrawRectangle(0, 0, w + 1, h + 1);
 187
 188     maskDC.SetBrush(*wxWHITE_BRUSH);
 189     maskDC.DrawRectangle(0, 0, w1, h1);
 190     maskDC.DrawRectangle(0, h1 + gap_between, w2, h2);
 191     maskDC.SelectObject(wxNullBitmap);
 192
 193     result.SetMask(new wxMask(mask));
 194
 195     return result;
 196 }
 197
 198 void AutoCaptureMechanism::Save(wxBitmap screenshot, wxString fileName)
 199 {
 200     //Check if m_defaultDir already existed
 201     if(!wxDirExists(m_dir))
 202         wxMkdir(m_dir);
 203
 204     wxString fullFileName = m_dir + wxFileName::GetPathSeparator() + fileName;
 205
 206     //to prvent overwritten
 207     while(wxFileName::FileExists(fullFileName + _T(".png"))) fullFileName += _T("_");
 208
 209     //Our Bitmap now has the screenshot, so let's save it as an png
 210     //The filename itself is without extension.
 211     screenshot.SaveFile(fullFileName + _T(".png"), wxBITMAP_TYPE_PNG);
 212 }
 213
 214 wxRect AutoCaptureMechanism::GetRect(wxWindow* ctrl, int flag)
 215 {
 216     if(flag & AJ_RegionAdjust)
 217     {
 218         wxWindow * parent = ctrl->GetParent();
 219         wxSizer * sizer = parent->GetSizer();
 220
 221         if(sizer)
 222         {
 223             sizer->Detach(ctrl);
 224
 225             /*
 226             +---------+-----------+---------+
 227             |    0    |   label   |    1    |
 228             +---------+-----------+---------+
 229             |  label  |    ctrl   |  label  |
 230             +---------+-----------+---------+
 231             |    2    |   label   |    3    |
 232             +---------+-----------+---------+
 233            */
 234
 235             m_grid = new wxFlexGridSizer(3, 3, m_border, m_border);
 236
 237             wxStaticText* l[4];
 238
 239             for(int i = 0; i < 4; ++i)
 240                 l[i] = new wxStaticText(parent, wxID_ANY, wxT(" "));
 241
 242             m_grid->Add(l[0]);
 243             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 244             m_grid->Add(l[1]);
 245             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 246             m_grid->Add(ctrl);
 247             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 248             m_grid->Add(l[2]);
 249             m_grid->Add(new wxStaticText(parent, wxID_ANY, wxT(" ")));
 250             m_grid->Add(l[3]);
 251
 252             sizer->Add(m_grid);
 253             parent->SetSizer(sizer);
 254             parent->Layout();
 255
 256             parent->Refresh();
 257             wxYield();
 258
 259             return wxRect(l[0]->GetScreenRect().GetBottomRight(),
 260                     l[3]->GetScreenRect().GetTopLeft());
 261
 262         }
 263         else  //Actually it won't get here working with the current guiframe.h/guiframe.cpp
 264         {
 265             return ctrl->GetScreenRect().Inflate(m_border);
 266         }
 267     }
 268     else
 269     {
 270        return ctrl->GetScreenRect().Inflate(m_border);
 271     }
 272 }
 273
 274 void AutoCaptureMechanism::PutBack(wxWindow * ctrl)
 275 {
 276     m_grid->Detach(ctrl);
 277
 278     wxSizerItemList children = m_grid->GetChildren();
 279
 280     for(wxSizerItemList::iterator it = children.begin(); it != children.end(); ++it)
 281     {
 282         wxSizerItem* item = *it;
 283         if(item->IsWindow()) delete (*it)->GetWindow();
 284     }
 285
 286     wxSizer * sizer = ctrl->GetParent()->GetSizer();
 287     sizer->Detach(m_grid);
 288     delete m_grid;
 289     sizer->Add(ctrl);
 290 }
 291