+// the event tables connect the wxWindows events with the functions (event
+// handlers) which process them.
+BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
+ EVT_PAINT (MyCanvas::OnPaint)
+ EVT_MOTION (MyCanvas::OnMouseMove)
+END_EVENT_TABLE()
+
+#include "smile.xpm"
+
+MyCanvas::MyCanvas(MyFrame *parent)
+ : wxScrolledWindow(parent, -1, wxDefaultPosition, wxDefaultSize,
+ wxHSCROLL | wxVSCROLL | wxNO_FULL_REPAINT_ON_RESIZE)
+{
+ m_owner = parent;
+ m_show = Show_Default;
+ m_smile_bmp = wxBitmap(smile_xpm);
+ m_std_icon = wxTheApp->GetStdIcon(wxICON_INFORMATION);
+}
+
+// Draw a polygon and an overlapping rectangle
+// If transparent is 1, the fill pattern is made transparent.
+// If transparent is 2, the fill pattern is made transparent but inversed
+// If is transparent is 0 the text for and background color will be used to represent/map
+// the colors of the monochrome bitmap pixels to the fillpattern
+//
+// I abused the the menu items for setting so called back and fore ground color
+// just to show how the those colors do influence the fillpatterns just play
+// with those, and with the code variations are endless using other logical
+// functions.
+
+void MyCanvas::DrawTestPoly( int x, int y,wxDC &dc,int transparent )
+{
+// wxBrush* brush4 = new wxBrush(*gs_bmp4);
+ wxBrush* brush4 = new wxBrush(*wxBLACK,wxFDIAGONAL_HATCH);
+ wxBrush* brush4_mono = new wxBrush(*gs_bmp4_mono);
+ wxBrush* brush36 = new wxBrush(*gs_bmp36);
+
+ wxPoint todraw[5];
+ todraw[0].x=(long)x+100;
+ todraw[0].y=(long)y+100;
+ todraw[1].x=(long)x+300;
+ todraw[1].y=(long)y+100;
+ todraw[2].x=(long)x+300;
+ todraw[2].y=(long)y+300;
+ todraw[3].x=(long)x+150;
+ todraw[3].y=(long)y+350;
+ todraw[4].x=(long)x+100;
+ todraw[4].y=(long)y+300;
+
+ wxPoint todraw2[5];
+ todraw2[0].x=100;
+ todraw2[0].y=100;
+ todraw2[1].x=300;
+ todraw2[1].y=100;
+ todraw2[2].x=300;
+ todraw2[2].y=300;
+ todraw2[3].x=150;
+ todraw2[3].y=350;
+ todraw2[4].x=100;
+ todraw2[4].y=300;
+
+ switch (transparent)
+ {
+ case 0:
+ {
+ dc.SetLogicalFunction(wxCOPY);
+
+ dc.SetPen( wxPen( wxT("black"), 4, wxSOLID) );
+ dc.SetBrush( *brush4 );
+ dc.DrawPolygon(5,todraw,0,0,wxWINDING_RULE);
+
+ dc.SetPen( wxPen( wxT("red"), 4, wxSOLID) );
+ dc.SetBrush( *brush36 );
+ dc.SetTextForeground(*wxCYAN);
+ dc.SetTextBackground(m_owner->m_colourBackground);
+ dc.DrawRectangle( x+10, y+10, 200, 200 );
+
+ dc.SetPen( wxPen( wxT("green"), 4, wxSOLID) );
+ dc.SetBrush( *brush4_mono );
+ dc.SetTextForeground(*wxCYAN);
+ dc.SetTextBackground(m_owner->m_colourBackground);
+ dc.DrawRectangle( x+50, y+50, 200, 200 );
+
+ dc.DrawCircle( x+400, y+50, 130 );
+
+ dc.SetBrush(wxNullBrush);
+ dc.SetPen(wxNullPen);
+ break;
+ }
+ case 1: //now with transparent fillpatterns
+ {
+
+ wxBitmap* bmpBlit = new wxBitmap(600,400);
+ wxMemoryDC* memDC= new wxMemoryDC();
+ // wxBrush _clearbrush(*wxGREEN,wxSOLID);
+ wxBrush _clearbrush(*wxBLACK,wxSOLID);
+ memDC->SelectObject(*bmpBlit);
+ memDC->BeginDrawing();
+ memDC->SetBackground(_clearbrush);
+ memDC->Clear();
+ memDC->SetBackground(wxNullBrush);
+
+ memDC->SetPen( wxPen( wxT("black"), 4, wxSOLID) );
+ memDC->SetBrush( wxNullBrush);
+ memDC->SetBrush( *brush4 );
+ memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
+ memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
+ memDC->SetLogicalFunction(wxAND_INVERT);
+
+ // BLACK OUT the opaque pixels and leave the rest as is
+ memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
+
+ // Set background and foreground colors for fill pattern
+ //the previous blacked out pixels are now merged with the layer color
+ //while the non blacked out pixels stay as they are.
+ memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
+
+ //now define what will be the color of the fillpattern parts that are not transparent
+ // memDC->SetTextBackground(*wxBLUE);
+ memDC->SetTextBackground(m_owner->m_colourForeground);
+ memDC->SetLogicalFunction(wxOR);
+
+
+ //don't understand how but the outline is also depending on logicalfunction
+ memDC->SetPen( wxPen( wxT("red"), 4, wxSOLID) );
+ memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
+
+ memDC->SetLogicalFunction(wxCOPY);
+
+ memDC->SetPen( wxPen( wxT("black"), 4, wxSOLID) );
+ memDC->SetBrush( wxNullBrush);
+ memDC->SetBrush( *brush36 );
+ memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
+ memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
+ memDC->SetLogicalFunction(wxAND_INVERT);
+
+ memDC->DrawRectangle( 10, 10, 200, 200 );
+
+ // Set background and foreground colors for fill pattern
+ //the previous blacked out pixels are now merged with the layer color
+ //while the non blacked out pixels stay as they are.
+ memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
+ //now define what will be the color of the fillpattern parts that are not transparent
+ // memDC->SetTextBackground(*wxRED);
+ memDC->SetTextBackground(m_owner->m_colourBackground);
+ memDC->SetLogicalFunction(wxOR);
+
+ //don't understand how but the outline is also depending on logicalfunction
+ memDC->SetPen( wxPen( wxT("yellow"), 4, wxSOLID) );
+ memDC->DrawRectangle( 10, 10, 200, 200 );
+
+ memDC->SetBrush(wxNullBrush);
+ memDC->SetPen(wxNullPen);
+
+ memDC->EndDrawing();
+ dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
+ delete bmpBlit;
+ delete memDC;
+ break;
+ }
+ case 2: //now with transparent inversed fillpatterns
+ {
+ wxBitmap* bmpBlit = new wxBitmap(600,400);
+ wxMemoryDC* memDC= new wxMemoryDC();
+ wxBrush _clearbrush(*wxWHITE,wxSOLID);
+ memDC->SelectObject(*bmpBlit);
+ memDC->BeginDrawing();
+ memDC->SetBackground(_clearbrush);
+ memDC->Clear();
+ memDC->SetBackground(wxNullBrush);
+
+ memDC->SetPen( wxPen( wxT("black"), 4, wxSOLID) );
+ memDC->SetBrush( *brush4 );
+ memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
+ memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
+ memDC->SetLogicalFunction(wxAND_INVERT);
+
+ // BLACK OUT the opaque pixels and leave the rest as is
+ memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
+
+ // Set background and foreground colors for fill pattern
+ //the previous blacked out pixels are now merged with the layer color
+ //while the non blacked out pixels stay as they are.
+ memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
+
+ //now define what will be the color of the fillpattern parts that are not transparent
+ memDC->SetTextForeground(m_owner->m_colourForeground);
+ memDC->SetLogicalFunction(wxOR);
+
+
+ //don't understand how but the outline is also depending on logicalfunction
+ memDC->SetPen( wxPen( wxT("red"), 4, wxSOLID) );
+ memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
+
+ memDC->SetLogicalFunction(wxCOPY);
+
+ memDC->SetPen( wxPen( wxT("black"), 4, wxSOLID) );
+ memDC->SetBrush( *brush36 );
+ memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
+ memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
+ memDC->SetLogicalFunction(wxAND_INVERT);
+
+ memDC->DrawRectangle( 10,10, 200, 200 );
+
+ // Set background and foreground colors for fill pattern
+ //the previous blacked out pixels are now merged with the layer color
+ //while the non blacked out pixels stay as they are.
+ memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
+ //now define what will be the color of the fillpattern parts that are not transparent
+ memDC->SetTextForeground(m_owner->m_colourBackground);
+ memDC->SetLogicalFunction(wxOR);
+
+ //don't understand how but the outline is also depending on logicalfunction
+ memDC->SetPen( wxPen( wxT("yellow"), 4, wxSOLID) );
+ memDC->DrawRectangle( 10, 10, 200, 200 );
+
+ memDC->SetBrush(wxNullBrush);
+ memDC->SetPen(wxNullPen);
+ dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
+ delete bmpBlit;
+ delete memDC;
+ }
+ }
+
+ delete brush4;
+ delete brush4_mono;
+ delete brush36;
+}
+
+void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc )
+{
+ dc.SetPen( wxPen( wxT("black"), width, wxSOLID) );
+ dc.SetBrush( *wxRED_BRUSH );
+ dc.DrawText(wxString::Format(wxT("Testing lines of width %d"), width), x + 10, y - 10);
+ dc.DrawRectangle( x+10, y+10, 100, 190 );
+
+ dc.DrawText("Solid/dot/short dash/long dash/dot dash", x + 150, y + 10);
+ dc.SetPen( wxPen( wxT("black"), width, wxSOLID) );
+ dc.DrawLine( x+20, y+20, 100, y+20 );
+ dc.SetPen( wxPen( wxT("black"), width, wxDOT) );
+ dc.DrawLine( x+20, y+30, 100, y+30 );
+ dc.SetPen( wxPen( wxT("black"), width, wxSHORT_DASH) );
+ dc.DrawLine( x+20, y+40, 100, y+40 );
+ dc.SetPen( wxPen( wxT("black"), width, wxLONG_DASH) );
+ dc.DrawLine( x+20, y+50, 100, y+50 );
+ dc.SetPen( wxPen( wxT("black"), width, wxDOT_DASH) );
+ dc.DrawLine( x+20, y+60, 100, y+60 );
+
+ dc.DrawText("Misc hatches", x + 150, y + 70);
+ dc.SetPen( wxPen( wxT("black"), width, wxBDIAGONAL_HATCH) );
+ dc.DrawLine( x+20, y+70, 100, y+70 );
+ dc.SetPen( wxPen( wxT("black"), width, wxCROSSDIAG_HATCH) );
+ dc.DrawLine( x+20, y+80, 100, y+80 );
+ dc.SetPen( wxPen( wxT("black"), width, wxFDIAGONAL_HATCH) );
+ dc.DrawLine( x+20, y+90, 100, y+90 );
+ dc.SetPen( wxPen( wxT("black"), width, wxCROSS_HATCH) );
+ dc.DrawLine( x+20, y+100, 100, y+100 );
+ dc.SetPen( wxPen( wxT("black"), width, wxHORIZONTAL_HATCH) );
+ dc.DrawLine( x+20, y+110, 100, y+110 );
+ dc.SetPen( wxPen( wxT("black"), width, wxVERTICAL_HATCH) );
+ dc.DrawLine( x+20, y+120, 100, y+120 );
+
+ dc.DrawText("User dash", x + 150, y + 140);
+ wxPen ud( wxT("black"), width, wxUSER_DASH );
+ wxDash dash1[1];
+ dash1[0] = 0;
+ ud.SetDashes( 1, dash1 );
+ dc.DrawLine( x+20, y+140, 100, y+140 );
+ dash1[0] = 1;
+ ud.SetDashes( 1, dash1 );
+ dc.DrawLine( x+20, y+150, 100, y+150 );
+ dash1[0] = 2;
+ ud.SetDashes( 1, dash1 );
+ dc.DrawLine( x+20, y+160, 100, y+160 );
+ dash1[0] = 0x7F;
+ ud.SetDashes( 1, dash1 );
+ dc.DrawLine( x+20, y+170, 100, y+170 );
+}
+
+void MyCanvas::DrawDefault(wxDC& dc)
+{
+ // mark the origin
+ dc.DrawCircle(0, 0, 10);
+#if !(defined __WXGTK__) && !(defined __WXMOTIF__) && !(defined __WXMGL__)
+ // not implemented in wxGTK or wxMOTIF :-(
+ dc.FloodFill(0, 0, wxColour(255, 0, 0));
+#endif //
+
+ dc.DrawCheckMark(5, 80, 15, 15);
+ dc.DrawCheckMark(25, 80, 30, 30);
+ dc.DrawCheckMark(60, 80, 60, 60);
+
+ // this is the test for "blitting bitmap into DC damages selected brush" bug
+ wxCoord rectSize = m_std_icon.GetWidth() + 10;
+ wxCoord x = 100;
+ dc.SetPen(*wxTRANSPARENT_PEN);
+ dc.SetBrush( *wxGREEN_BRUSH );
+ dc.DrawRectangle(x, 10, rectSize, rectSize);
+ dc.DrawBitmap(m_std_icon, x + 5, 15, TRUE);
+ x += rectSize + 10;
+ dc.DrawRectangle(x, 10, rectSize, rectSize);
+ dc.DrawIcon(m_std_icon, x + 5, 15);
+ x += rectSize + 10;
+ dc.DrawRectangle(x, 10, rectSize, rectSize);
+
+ // test for "transparent" bitmap drawing (it intersects with the last
+ // rectangle above)
+ //dc.SetBrush( *wxTRANSPARENT_BRUSH );
+
+ if (m_smile_bmp.Ok())
+ dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, TRUE);
+
+ dc.SetBrush( *wxBLACK_BRUSH );
+ dc.DrawRectangle( 0, 160, 1000, 300 );
+
+ // draw lines
+ wxBitmap bitmap(20,70);
+ wxMemoryDC memdc;
+ memdc.SelectObject( bitmap );
+ memdc.SetBrush( *wxBLACK_BRUSH );
+ memdc.SetPen( *wxWHITE_PEN );
+ memdc.DrawRectangle(0,0,20,70);
+ memdc.DrawLine( 10,0,10,70 );
+
+ // to the right
+ wxPen pen = *wxRED_PEN;
+ memdc.SetPen(pen);
+ memdc.DrawLine( 10, 5,10, 5 );
+ memdc.DrawLine( 10,10,11,10 );
+ memdc.DrawLine( 10,15,12,15 );
+ memdc.DrawLine( 10,20,13,20 );
+
+/*
+ memdc.SetPen(*wxRED_PEN);
+ memdc.DrawLine( 12, 5,12, 5 );
+ memdc.DrawLine( 12,10,13,10 );
+ memdc.DrawLine( 12,15,14,15 );
+ memdc.DrawLine( 12,20,15,20 );
+*/
+
+ // same to the left
+ memdc.DrawLine( 10,25,10,25 );
+ memdc.DrawLine( 10,30, 9,30 );
+ memdc.DrawLine( 10,35, 8,35 );
+ memdc.DrawLine( 10,40, 7,40 );
+
+ // XOR draw lines
+ dc.SetPen(*wxWHITE_PEN);
+ memdc.SetLogicalFunction( wxINVERT );
+ memdc.SetPen( *wxWHITE_PEN );
+ memdc.DrawLine( 10,50,10,50 );
+ memdc.DrawLine( 10,55,11,55 );
+ memdc.DrawLine( 10,60,12,60 );
+ memdc.DrawLine( 10,65,13,65 );
+
+ memdc.DrawLine( 12,50,12,50 );
+ memdc.DrawLine( 12,55,13,55 );
+ memdc.DrawLine( 12,60,14,60 );
+ memdc.DrawLine( 12,65,15,65 );
+
+ memdc.SelectObject( wxNullBitmap );
+ dc.DrawBitmap( bitmap, 10, 170 );
+ wxImage image( bitmap );
+ image.Rescale( 60,210 );
+ bitmap = image.ConvertToBitmap();
+ dc.DrawBitmap( bitmap, 50, 170 );
+
+ // test the rectangle outline drawing - there should be one pixel between
+ // the rect and the lines
+ dc.SetPen(*wxWHITE_PEN);
+ dc.SetBrush( *wxTRANSPARENT_BRUSH );
+ dc.DrawRectangle(150, 170, 49, 29);
+ dc.DrawRectangle(200, 170, 49, 29);
+ dc.SetPen(*wxWHITE_PEN);
+ dc.DrawLine(250, 210, 250, 170);
+ dc.DrawLine(260, 200, 150, 200);
+
+ // test the rectangle filled drawing - there should be one pixel between
+ // the rect and the lines
+ dc.SetPen(*wxTRANSPARENT_PEN);
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.DrawRectangle(300, 170, 49, 29);
+ dc.DrawRectangle(350, 170, 49, 29);
+ dc.SetPen(*wxWHITE_PEN);
+ dc.DrawLine(400, 170, 400, 210);
+ dc.DrawLine(300, 200, 410, 200);
+
+ // a few more tests of this kind
+ dc.SetPen(*wxRED_PEN);
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.DrawRectangle(300, 220, 1, 1);
+ dc.DrawRectangle(310, 220, 2, 2);
+ dc.DrawRectangle(320, 220, 3, 3);
+ dc.DrawRectangle(330, 220, 4, 4);
+
+ dc.SetPen(*wxTRANSPARENT_PEN);
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.DrawRectangle(300, 230, 1, 1);
+ dc.DrawRectangle(310, 230, 2, 2);
+ dc.DrawRectangle(320, 230, 3, 3);
+ dc.DrawRectangle(330, 230, 4, 4);
+
+ // and now for filled rect with outline
+ dc.SetPen(*wxRED_PEN);
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.DrawRectangle(500, 170, 49, 29);
+ dc.DrawRectangle(550, 170, 49, 29);
+ dc.SetPen(*wxWHITE_PEN);
+ dc.DrawLine(600, 170, 600, 210);
+ dc.DrawLine(500, 200, 610, 200);
+
+ // test the rectangle outline drawing - there should be one pixel between
+ // the rect and the lines
+ dc.SetPen(*wxWHITE_PEN);
+ dc.SetBrush( *wxTRANSPARENT_BRUSH );
+ dc.DrawRoundedRectangle(150, 270, 49, 29, 6);
+ dc.DrawRoundedRectangle(200, 270, 49, 29, 6);
+ dc.SetPen(*wxWHITE_PEN);
+ dc.DrawLine(250, 270, 250, 310);
+ dc.DrawLine(150, 300, 260, 300);
+
+ // test the rectangle filled drawing - there should be one pixel between
+ // the rect and the lines
+ dc.SetPen(*wxTRANSPARENT_PEN);
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.DrawRoundedRectangle(300, 270, 49, 29, 6);
+ dc.DrawRoundedRectangle(350, 270, 49, 29, 6);
+ dc.SetPen(*wxWHITE_PEN);
+ dc.DrawLine(400, 270, 400, 310);
+ dc.DrawLine(300, 300, 410, 300);
+
+ // Added by JACS to demonstrate bizarre behaviour.
+ // With a size of 70, we get a missing red RHS,
+ // and the hight is too small, so we get yellow
+ // showing. With a size of 40, it draws as expected:
+ // it just shows a white rectangle with red outline.
+ int totalWidth = 70;
+ int totalHeight = 70;
+ wxBitmap bitmap2(totalWidth, totalHeight);
+
+ wxMemoryDC memdc2;
+ memdc2.SelectObject(bitmap2);
+
+ wxBrush yellowBrush(wxColour(255, 255, 0), wxSOLID);
+ memdc2.SetBackground(yellowBrush);
+ memdc2.Clear();
+
+ wxPen yellowPen(wxColour(255, 255, 0), 1, wxSOLID);
+
+ // Now draw a white rectangle with red outline. It should
+ // entirely eclipse the yellow background.
+ memdc2.SetPen(*wxRED_PEN);
+ memdc2.SetBrush(*wxWHITE_BRUSH);
+
+ memdc2.DrawRectangle(0, 0, totalWidth, totalHeight);
+
+ memdc2.SetPen(wxNullPen);
+ memdc2.SetBrush(wxNullBrush);
+ memdc2.SelectObject(wxNullBitmap);
+
+ dc.DrawBitmap(bitmap2, 500, 270);
+
+ // Repeat, but draw directly on dc
+ // Draw a yellow rectangle filling the bitmap
+
+ x = 600; int y = 270;
+ dc.SetPen(yellowPen);
+ dc.SetBrush(yellowBrush);
+ dc.DrawRectangle(x, y, totalWidth, totalHeight);
+
+ // Now draw a white rectangle with red outline. It should
+ // entirely eclipse the yellow background.
+ dc.SetPen(*wxRED_PEN);
+ dc.SetBrush(*wxWHITE_BRUSH);
+
+ dc.DrawRectangle(x, y, totalWidth, totalHeight);
+}
+
+void MyCanvas::DrawText(wxDC& dc)
+{
+ // set underlined font for testing
+ dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, TRUE) );
+ dc.DrawText( "This is text", 110, 10 );
+ dc.DrawRotatedText( "That is text", 20, 10, -45 );
+
+ // use wxSWISS_FONT and not wxNORMAL_FONT as the latter can't be rotated
+ // under Win9x (it is not TrueType)
+ dc.SetFont( *wxSWISS_FONT );
+
+ wxString text;
+ dc.SetBackgroundMode(wxTRANSPARENT);
+
+ for ( int n = -180; n < 180; n += 30 )
+ {
+ text.Printf(wxT(" %d rotated text"), n);
+ dc.DrawRotatedText(text , 400, 400, n);
+ }
+
+ dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) );
+
+ dc.DrawText( "This is Swiss 18pt text.", 110, 40 );
+
+ long length;
+ long height;
+ long descent;
+ dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent );
+ text.Printf( wxT("Dimensions are length %ld, height %ld, descent %ld"), length, height, descent );
+ dc.DrawText( text, 110, 80 );
+
+ text.Printf( wxT("CharHeight() returns: %d"), dc.GetCharHeight() );
+ dc.DrawText( text, 110, 120 );
+
+ dc.DrawRectangle( 100, 40, 4, height );
+
+ // test the logical function effect
+ wxCoord y = 150;
+ dc.SetLogicalFunction(wxINVERT);
+ dc.DrawText( "There should be no text below", 110, 150 );
+ dc.DrawRectangle( 110, y, 100, height );
+
+ // twice drawn inverted should result in invisible
+ y += height;
+ dc.DrawText( "Invisible text", 110, y );
+ dc.DrawRectangle( 110, y, 100, height );
+ dc.DrawText( "Invisible text", 110, y );
+ dc.DrawRectangle( 110, y, 100, height );
+ dc.SetLogicalFunction(wxCOPY);
+
+ y += height;
+ dc.DrawRectangle( 110, y, 100, height );
+ dc.DrawText( "Visible text", 110, y );
+}
+
+static const struct
+{
+ const wxChar *name;
+ int rop;
+} rasterOperations[] =
+{
+ { wxT("wxAND"), wxAND },
+ { wxT("wxAND_INVERT"), wxAND_INVERT },
+ { wxT("wxAND_REVERSE"), wxAND_REVERSE },
+ { wxT("wxCLEAR"), wxCLEAR },
+ { wxT("wxCOPY"), wxCOPY },
+ { wxT("wxEQUIV"), wxEQUIV },
+ { wxT("wxINVERT"), wxINVERT },
+ { wxT("wxNAND"), wxNAND },
+ { wxT("wxNO_OP"), wxNO_OP },
+ { wxT("wxOR"), wxOR },
+ { wxT("wxOR_INVERT"), wxOR_INVERT },
+ { wxT("wxOR_REVERSE"), wxOR_REVERSE },
+ { wxT("wxSET"), wxSET },
+ { wxT("wxSRC_INVERT"), wxSRC_INVERT },
+ { wxT("wxXOR"), wxXOR },
+};
+
+void MyCanvas::DrawImages(wxDC& dc)
+{
+ dc.DrawText("original image", 0, 0);
+ dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0);
+ dc.DrawText("with colour mask", 0, 100);
+ dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, TRUE);
+ dc.DrawText("the mask image", 0, 200);
+ dc.DrawBitmap(*gs_bmpMask, 0, 220, 0);
+ dc.DrawText("masked image", 0, 300);
+ dc.DrawBitmap(*gs_bmpWithMask, 0, 320, TRUE);
+
+ int cx = gs_bmpWithColMask->GetWidth(),
+ cy = gs_bmpWithColMask->GetHeight();
+
+ wxMemoryDC memDC;
+ for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ )
+ {
+ wxCoord x = 120 + 150*(n%4),
+ y = 20 + 100*(n/4);
+
+ dc.DrawText(rasterOperations[n].name, x, y - 20);
+ memDC.SelectObject(*gs_bmpWithColMask);
+ dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, TRUE);
+ }
+}
+
+void MyCanvas::DrawWithLogicalOps(wxDC& dc)
+{
+ static const wxCoord w = 60;
+ static const wxCoord h = 60;
+
+ // reuse the text colour here
+ dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID));
+ dc.SetBrush(*wxTRANSPARENT_BRUSH);
+
+ size_t n;
+ for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
+ {
+ wxCoord x = 20 + 150*(n%4),
+ y = 20 + 100*(n/4);
+
+ dc.DrawText(rasterOperations[n].name, x, y - 20);
+ dc.SetLogicalFunction(rasterOperations[n].rop);
+ dc.DrawRectangle(x, y, w, h);
+ dc.DrawLine(x, y, x + w, y + h);
+ dc.DrawLine(x + w, y, x, y + h);
+ }
+
+ // now some filled rectangles
+ dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID));
+
+ for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
+ {
+ wxCoord x = 20 + 150*(n%4),
+ y = 500 + 100*(n/4);
+
+ dc.DrawText(rasterOperations[n].name, x, y - 20);
+ dc.SetLogicalFunction(rasterOperations[n].rop);
+ dc.DrawRectangle(x, y, w, h);
+ }
+}
+
+void MyCanvas::DrawCircles(wxDC& dc)
+{
+ int x = 100,
+ y = 100,
+ r = 20;
+
+ dc.DrawText("Some circles", 0, y);
+ dc.DrawCircle(x, y, r);
+ dc.DrawCircle(x + 2*r, y, r);
+ dc.DrawCircle(x + 4*r, y, r);
+
+ y += 2*r;
+ dc.DrawText("And ellipses", 0, y);
+ dc.DrawEllipse(x - r, y, 2*r, r);
+ dc.DrawEllipse(x + r, y, 2*r, r);
+ dc.DrawEllipse(x + 3*r, y, 2*r, r);
+
+ y += 2*r;
+ dc.DrawText("And arcs", 0, y);
+ dc.DrawArc(x - r, y, x + r, y, x, y);
+ dc.DrawArc(x + 4*r, y, x + 2*r, y, x + 3*r, y);
+ dc.DrawArc(x + 5*r, y, x + 5*r, y, x + 6*r, y);
+
+ y += 2*r;
+ dc.DrawEllipticArc(x - r, y, 2*r, r, 0, 90);
+ dc.DrawEllipticArc(x + r, y, 2*r, r, 90, 180);
+ dc.DrawEllipticArc(x + 3*r, y, 2*r, r, 180, 270);
+ dc.DrawEllipticArc(x + 5*r, y, 2*r, r, 270, 360);
+}
+
+void MyCanvas::DrawRegions(wxDC& dc)
+{
+ dc.DrawText("You should see a red rect partly covered by a cyan one "
+ "on the left", 10, 5);
+ dc.DrawText("and 5 smileys from which 4 are partially clipped on the "
+ "right (2 copies should be identical)",
+ 10, 5 + dc.GetCharHeight());
+
+ DrawRegionsHelper(dc, 10);
+ DrawRegionsHelper(dc, 350);
+}
+
+void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x)
+{
+ dc.DestroyClippingRegion();
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.SetPen( *wxTRANSPARENT_PEN );
+ dc.DrawRectangle( x,50,310,310 );
+
+ dc.SetClippingRegion( x+10,60,100,270 );
+
+ dc.SetBrush( *wxRED_BRUSH );
+ dc.DrawRectangle( x,50,310,310 );
+
+ dc.SetClippingRegion( x+10,60,100,100 );
+
+ dc.SetBrush( *wxCYAN_BRUSH );
+ dc.DrawRectangle( x,50,310,310 );
+
+ // when drawing the left half, destroy the clipping region, when drawing
+ // the right one - leave it
+ //
+ // normally it shouldn't make any difference as SetClippingRegion()
+ // replaces the old clipping region
+ if ( x < 300 )
+ dc.DestroyClippingRegion();
+ dc.SetClippingRegion( x+110,70,100,270 );
+
+ dc.SetBrush( *wxGREY_BRUSH );
+ dc.DrawRectangle( x,50,310,310 );
+
+ if (m_smile_bmp.Ok())
+ {
+ dc.DrawBitmap( m_smile_bmp, x+150, 200, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+130, 60, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+130, 330, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+100, 120, TRUE );
+ dc.DrawBitmap( m_smile_bmp, x+200, 120, TRUE );
+ }
+}
+
+void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
+{
+ wxPaintDC dc(this);
+ PrepareDC(dc);
+
+ m_owner->PrepareDC(dc);
+
+ dc.SetBackgroundMode( m_owner->m_backgroundMode );
+ if ( m_owner->m_backgroundBrush.Ok() )
+ dc.SetBackground( m_owner->m_backgroundBrush );
+ if ( m_owner->m_colourForeground.Ok() )
+ dc.SetTextForeground( m_owner->m_colourForeground );
+ if ( m_owner->m_colourBackground.Ok() )
+ dc.SetTextBackground( m_owner->m_colourBackground );
+
+ if ( m_owner->m_textureBackground) {
+ if ( ! m_owner->m_backgroundBrush.Ok() ) {
+ wxBrush b(wxColour(0,128,0), wxSOLID);
+ dc.SetBackground(b);
+ }
+ }
+
+ dc.Clear();
+
+ if ( m_owner->m_textureBackground) {
+ dc.SetPen(*wxMEDIUM_GREY_PEN);
+ for (int i=0; i<200; i++)
+ dc.DrawLine(0, i*10, i*10, 0);
+ }
+
+ switch ( m_show )
+ {
+ case Show_Default:
+ DrawDefault(dc);
+ break;
+
+ case Show_Circles:
+ DrawCircles(dc);
+ break;
+
+ case Show_Regions:
+ DrawRegions(dc);
+ break;
+
+ case Show_Text:
+ DrawText(dc);
+ break;
+
+ case Show_Lines:
+ DrawTestLines( 0, 100, 0, dc );
+ DrawTestLines( 0, 320, 1, dc );
+ DrawTestLines( 0, 540, 2, dc );
+ DrawTestLines( 0, 760, 6, dc );
+ break;
+
+ case Show_Polygons:
+ DrawTestPoly( 0, 100, dc, 0 );
+/*
+ DrawTestPoly( 33, 500, dc, 1 );
+ DrawTestPoly( 43, 1000, dc, 2 );
+*/
+ break;
+
+ case Show_Mask:
+ DrawImages(dc);
+ break;
+
+ case Show_Ops:
+ DrawWithLogicalOps(dc);
+ break;
+
+ default:
+ {
+ dc.SetPen( *wxBLACK_PEN );
+ dc.DrawLine( 0,0,100,100 );
+ }
+
+ }
+}
+
+void MyCanvas::OnMouseMove(wxMouseEvent &event)
+{
+ wxClientDC dc(this);
+ PrepareDC(dc);
+ m_owner->PrepareDC(dc);
+
+ wxPoint pos = event.GetPosition();
+ long x = dc.DeviceToLogicalX( pos.x );
+ long y = dc.DeviceToLogicalY( pos.y );
+ wxString str;
+ str.Printf( wxT("Current mouse position: %d,%d"), (int)x, (int)y );
+ m_owner->SetStatusText( str );
+}
+
+// ----------------------------------------------------------------------------
+// MyFrame
+// ----------------------------------------------------------------------------
+
+// the event tables connect the wxWindows events with the functions (event
+// handlers) which process them. It can be also done at run-time, but for the
+// simple menu events like this the static method is much simpler.
+BEGIN_EVENT_TABLE(MyFrame, wxFrame)
+ EVT_MENU (File_Quit, MyFrame::OnQuit)
+ EVT_MENU (File_About, MyFrame::OnAbout)
+
+ EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow)
+
+ EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption)
+END_EVENT_TABLE()
+
projects / wxWidgets.git / blobdiff