X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/70bdacfc8edfbd1b713d0438a6385a7e1520b28d..015e69f36dfbc469eef59456f973d0567e865d70:/samples/drawing/drawing.cpp?ds=sidebyside diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp index 1d6f9e8718..ac67006879 100644 --- a/samples/drawing/drawing.cpp +++ b/samples/drawing/drawing.cpp @@ -16,6 +16,7 @@ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- + #ifdef __GNUG__ #pragma implementation "drawing.cpp" #pragma interface "drawing.cpp" @@ -35,15 +36,47 @@ #endif #include "wx/colordlg.h" +#include "wx/image.h" // ---------------------------------------------------------------------------- // ressources // ---------------------------------------------------------------------------- + // the application icon #if defined(__WXGTK__) || defined(__WXMOTIF__) #include "mondrian.xpm" #endif +// ---------------------------------------------------------------------------- +// constants +// ---------------------------------------------------------------------------- + +// what do we show on screen (there are too many shapes to put them all on +// screen simultaneously) +enum ScreenToShow +{ + Show_Default, + Show_Text, + Show_Lines, + Show_Polygons, + Show_Mask, + Show_Ops, + Show_Regions, + Show_Circles +}; + +// ---------------------------------------------------------------------------- +// global variables +// ---------------------------------------------------------------------------- + +static wxBitmap *gs_bmpNoMask = NULL, + *gs_bmpWithColMask = NULL, + *gs_bmpMask = NULL, + *gs_bmpWithMask = NULL, + *gs_bmp4 = NULL, + *gs_bmp4_mono = NULL, + *gs_bmp36 = NULL; + // ---------------------------------------------------------------------------- // private classes // ---------------------------------------------------------------------------- @@ -59,6 +92,13 @@ public: // initialization (doing it here and not in the ctor allows to have an error // return: if OnInit() returns false, the application terminates) virtual bool OnInit(); + + virtual int OnExit() { DeleteBitmaps(); return 0; } + +protected: + void DeleteBitmaps(); + + bool LoadImages(); }; class MyCanvas; @@ -73,13 +113,14 @@ public: // event handlers (these functions should _not_ be virtual) void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); + void OnShow(wxCommandEvent &event); void OnOption(wxCommandEvent &event); - void OnMouseMove(wxMouseEvent &event); wxColour SelectColour(); void PrepareDC(wxDC& dc); int m_backgroundMode; + int m_textureBackground; int m_mapMode; double m_xUserScale; double m_yUserScale; @@ -103,13 +144,28 @@ class MyCanvas: public wxScrolledWindow public: MyCanvas( MyFrame *parent ); - void DrawTestLines( int x, int y, int width, wxDC &dc ); void OnPaint(wxPaintEvent &event); - + void OnMouseMove(wxMouseEvent &event); + + void Show(ScreenToShow show) { m_show = show; Refresh(); } + protected: - MyFrame *m_owner; - + void DrawTestPoly( int x, int y, wxDC &dc ,int transparent ); + void DrawTestLines( int x, int y, int width, wxDC &dc ); + void DrawText(wxDC& dc); + void DrawImages(wxDC& dc); + void DrawWithLogicalOps(wxDC& dc); + void DrawRegions(wxDC& dc); + void DrawCircles(wxDC& dc); + void DrawDefault(wxDC& dc); + private: + MyFrame *m_owner; + + ScreenToShow m_show; + wxBitmap m_smile_bmp; + wxIcon m_std_icon; + DECLARE_EVENT_TABLE() }; @@ -121,8 +177,19 @@ private: enum { // menu items - Minimal_Quit = 1, - Minimal_About, + File_Quit = 1, + File_About, + + MenuShow_First, + File_ShowDefault = MenuShow_First, + File_ShowText, + File_ShowLines, + File_ShowPolygons, + File_ShowMask, + File_ShowOps, + File_ShowRegions, + File_ShowCircles, + MenuShow_Last = File_ShowCircles, MenuOption_First, @@ -150,8 +217,9 @@ enum Colour_TextBackground, Colour_Background, Colour_BackgroundMode, + Colour_TextureBackgound, - MenuOption_Last = Colour_BackgroundMode + MenuOption_Last = Colour_TextureBackgound }; // ---------------------------------------------------------------------------- @@ -174,6 +242,59 @@ IMPLEMENT_APP(MyApp) // the application class // ---------------------------------------------------------------------------- +bool MyApp::LoadImages() +{ + gs_bmpNoMask = new wxBitmap; + gs_bmpWithColMask = new wxBitmap; + gs_bmpMask = new wxBitmap; + gs_bmpWithMask = new wxBitmap; + gs_bmp4 = new wxBitmap; + gs_bmp4_mono = new wxBitmap; + gs_bmp36 = new wxBitmap; + + wxPathList pathList; + pathList.Add("."); + pathList.Add(".."); + + wxString path = pathList.FindValidPath("pat4.bmp"); + if ( !path ) + return FALSE; + + /* 4 colour bitmap */ + gs_bmp4->LoadFile(path, wxBITMAP_TYPE_BMP); + /* turn into mono-bitmap */ + gs_bmp4_mono->LoadFile(path, wxBITMAP_TYPE_BMP); + wxMask* mask4 = new wxMask(*gs_bmp4_mono, *wxBLACK); + gs_bmp4_mono->SetMask(mask4); + + path = pathList.FindValidPath("pat36.bmp"); + if ( !path ) + return FALSE; + gs_bmp36->LoadFile(path, wxBITMAP_TYPE_BMP); + wxMask* mask36 = new wxMask(*gs_bmp36, *wxBLACK); + gs_bmp36->SetMask(mask36); + + path = pathList.FindValidPath("image.bmp"); + if ( !path ) + return FALSE; + gs_bmpNoMask->LoadFile(path, wxBITMAP_TYPE_BMP); + gs_bmpWithMask->LoadFile(path, wxBITMAP_TYPE_BMP); + gs_bmpWithColMask->LoadFile(path, wxBITMAP_TYPE_BMP); + + path = pathList.FindValidPath("mask.bmp"); + if ( !path ) + return FALSE; + gs_bmpMask->LoadFile(path, wxBITMAP_TYPE_BMP); + + wxMask *mask = new wxMask(*gs_bmpMask, *wxBLACK); + gs_bmpWithMask->SetMask(mask); + + mask = new wxMask(*gs_bmpWithColMask, *wxWHITE); + gs_bmpWithColMask->SetMask(mask); + + return TRUE; +} + // `Main program' equivalent: the program execution "starts" here bool MyApp::OnInit() { @@ -185,12 +306,33 @@ bool MyApp::OnInit() frame->Show(TRUE); SetTopWindow(frame); - // success: wxApp::OnRun() will be called which will enter the main message - // loop and the application will run. If we returned FALSE here, the - // application would exit immediately. + if ( !LoadImages() ) + { + wxLogError("Can't load one of the bitmap files needed for this sample " + "from the current or parent directory, please copy them " + "there."); + + // stop here + DeleteBitmaps(); + + return FALSE; + } + + // ok, continue return TRUE; } +void MyApp::DeleteBitmaps() +{ + delete gs_bmpNoMask; + delete gs_bmpWithColMask; + delete gs_bmpMask; + delete gs_bmpWithMask; + delete gs_bmp4; + delete gs_bmp4_mono; + delete gs_bmp36; +} + // ---------------------------------------------------------------------------- // MyCanvas // ---------------------------------------------------------------------------- @@ -199,75 +341,281 @@ bool MyApp::OnInit() // handlers) which process them. BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) EVT_PAINT (MyCanvas::OnPaint) + EVT_MOTION (MyCanvas::OnMouseMove) END_EVENT_TABLE() -MyCanvas::MyCanvas( MyFrame *parent ) - : wxScrolledWindow( parent ) +#include "../image/smile.xpm" + +MyCanvas::MyCanvas( MyFrame *parent ) : wxScrolledWindow( parent ) { - m_owner = parent; + 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( "black", 4, wxSOLID) ); + dc.SetBrush( *brush4 ); + dc.DrawPolygon(5,todraw,0,0,wxWINDING_RULE); + + dc.SetPen( wxPen( "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( "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( "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( "red", 4, wxSOLID) ); + memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE); + + memDC->SetLogicalFunction(wxCOPY); + + memDC->SetPen( wxPen( "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( "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( "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( "red", 4, wxSOLID) ); + memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE); + + memDC->SetLogicalFunction(wxCOPY); + + memDC->SetPen( wxPen( "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( "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( "black", width, wxSOLID) ); dc.SetBrush( *wxRED_BRUSH ); - dc.DrawRectangle( x+10, y+10, 400, 190 ); - + dc.DrawText(wxString::Format("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( "black", width, wxSOLID) ); - dc.DrawLine( x+20, y+20, 390, y+20 ); + dc.DrawLine( x+20, y+20, 100, y+20 ); dc.SetPen( wxPen( "black", width, wxDOT) ); - dc.DrawLine( x+20, y+30, 390, y+30 ); + dc.DrawLine( x+20, y+30, 100, y+30 ); dc.SetPen( wxPen( "black", width, wxSHORT_DASH) ); - dc.DrawLine( x+20, y+40, 390, y+40 ); + dc.DrawLine( x+20, y+40, 100, y+40 ); dc.SetPen( wxPen( "black", width, wxLONG_DASH) ); - dc.DrawLine( x+20, y+50, 390, y+50 ); + dc.DrawLine( x+20, y+50, 100, y+50 ); dc.SetPen( wxPen( "black", width, wxDOT_DASH) ); - dc.DrawLine( x+20, y+60, 390, y+60 ); + dc.DrawLine( x+20, y+60, 100, y+60 ); + dc.DrawText("Misc hatches", x + 150, y + 70); dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) ); - dc.DrawLine( x+20, y+70, 390, y+70 ); + dc.DrawLine( x+20, y+70, 100, y+70 ); dc.SetPen( wxPen( "black", width, wxCROSSDIAG_HATCH) ); - dc.DrawLine( x+20, y+80, 390, y+80 ); + dc.DrawLine( x+20, y+80, 100, y+80 ); dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) ); - dc.DrawLine( x+20, y+90, 390, y+90 ); + dc.DrawLine( x+20, y+90, 100, y+90 ); dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) ); - dc.DrawLine( x+20, y+100, 390, y+100 ); + dc.DrawLine( x+20, y+100, 100, y+100 ); dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) ); - dc.DrawLine( x+20, y+110, 390, y+110 ); + dc.DrawLine( x+20, y+110, 100, y+110 ); dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) ); - dc.DrawLine( x+20, y+120, 390, y+120 ); + dc.DrawLine( x+20, y+120, 100, y+120 ); + dc.DrawText("User dash", x + 150, y + 140); wxPen ud( "black", width, wxUSER_DASH ); wxDash dash1[1]; dash1[0] = 0; ud.SetDashes( 1, dash1 ); - dc.DrawLine( x+20, y+140, 390, y+140 ); + dc.DrawLine( x+20, y+140, 100, y+140 ); dash1[0] = 1; ud.SetDashes( 1, dash1 ); - dc.DrawLine( x+20, y+150, 390, y+150 ); + dc.DrawLine( x+20, y+150, 100, y+150 ); dash1[0] = 2; ud.SetDashes( 1, dash1 ); - dc.DrawLine( x+20, y+160, 390, y+160 ); - dash1[0] = 0xFF; + dc.DrawLine( x+20, y+160, 100, y+160 ); + dash1[0] = 0x7F; ud.SetDashes( 1, dash1 ); - dc.DrawLine( x+20, y+170, 390, y+170 ); - + dc.DrawLine( x+20, y+170, 100, y+170 ); } -void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) +void MyCanvas::DrawDefault(wxDC& dc) { - 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 ); - // mark the origin dc.DrawCircle(0, 0, 10); #if !(defined __WXGTK__) && !(defined __WXMOTIF__) @@ -275,9 +623,215 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) 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 ); + + dc.SetFont( *wxNORMAL_FONT ); + + wxString text; + dc.SetBackgroundMode(wxTRANSPARENT); + + for ( int n = -180; n < 180; n += 30 ) + { + text.Printf(" %d rotated text", n); + dc.DrawRotatedText(text , 400, 400, n); + } - dc.SetFont( wxFont( 18, wxSWISS, 0, 0 ) ); + dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) ); dc.DrawText( "This is Swiss 18pt text.", 110, 40 ); @@ -285,26 +839,271 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) long height; long descent; dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent ); - wxString text; text.Printf( "Dimensions are length %ld, height %ld, descent %ld", length, height, descent ); dc.DrawText( text, 110, 80 ); - dc.DrawRectangle( 100, 40, 4, height ); - text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() ); dc.DrawText( text, 110, 120 ); + dc.DrawRectangle( 100, 40, 4, height ); - dc.DrawIcon( wxICON(mondrian), 310, 40 ); + // 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[] = +{ + { "wxAND", wxAND }, + { "wxAND_INVERT", wxAND_INVERT }, + { "wxAND_REVERSE", wxAND_REVERSE }, + { "wxCLEAR", wxCLEAR }, + { "wxCOPY", wxCOPY }, + { "wxEQUIV", wxEQUIV }, + { "wxINVERT", wxINVERT }, + { "wxNAND", wxNAND }, + { "wxNO_OP", wxNO_OP }, + { "wxOR", wxOR }, + { "wxOR_INVERT", wxOR_INVERT }, + { "wxOR_REVERSE", wxOR_REVERSE }, + { "wxSET", wxSET }, + { "wxSRC_INVERT", wxSRC_INVERT }, + { "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.SetBrush( *wxWHITE_BRUSH ); + dc.SetPen( *wxTRANSPARENT_PEN ); + dc.DrawRectangle( 10,10,310,310 ); + + dc.SetClippingRegion( 20,20,100,270 ); + + dc.SetBrush( *wxRED_BRUSH ); + dc.DrawRectangle( 10,10,310,310 ); + + dc.SetClippingRegion( 20,20,100,100 ); + + dc.SetBrush( *wxCYAN_BRUSH ); + dc.DrawRectangle( 10,10,310,310 ); + + dc.DestroyClippingRegion(); + dc.SetClippingRegion( 120,30,100,270 ); + + dc.SetBrush( *wxGREY_BRUSH ); + dc.DrawRectangle( 10,10,310,310 ); - DrawTestLines( 0, 200, 0, dc ); + if (m_smile_bmp.Ok()) + { + dc.DrawBitmap( m_smile_bmp, 140, 20, TRUE ); + dc.DrawBitmap( m_smile_bmp, 140, 290, TRUE ); + dc.DrawBitmap( m_smile_bmp, 110, 80, TRUE ); + dc.DrawBitmap( m_smile_bmp, 210, 80, 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); + } - DrawTestLines( 0, 400, 1, dc ); + switch ( m_show ) + { + case Show_Default: + DrawDefault(dc); + break; + + case Show_Circles: + DrawCircles(dc); + break; + + case Show_Regions: + DrawRegions(dc); + break; - DrawTestLines( 0, 600, 2, dc ); + 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; - DrawTestLines( 0, 800, 6, dc ); + 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( "Current mouse position: %d,%d", (int)x, (int)y ); + m_owner->SetStatusText( str ); } // ---------------------------------------------------------------------------- @@ -315,9 +1114,11 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(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_MOTION (MyFrame::OnMouseMove) - EVT_MENU (Minimal_Quit, MyFrame::OnQuit) - EVT_MENU (Minimal_About, MyFrame::OnAbout) + 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() @@ -329,9 +1130,18 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) SetIcon(wxICON(mondrian)); wxMenu *menuFile = new wxMenu; - menuFile->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog"); + menuFile->Append(File_ShowDefault, "&Default screen\tF1"); + menuFile->Append(File_ShowText, "&Text screen\tF2"); + menuFile->Append(File_ShowLines, "&Lines screen\tF3"); + menuFile->Append(File_ShowPolygons, "&Polygons screen\tF4"); + menuFile->Append(File_ShowMask, "wx&Mask screen\tF5"); + menuFile->Append(File_ShowOps, "&ROP screen\tF6"); + menuFile->Append(File_ShowRegions, "Re&gions screen\tF7"); + menuFile->Append(File_ShowCircles, "&Circles screen\tF8"); menuFile->AppendSeparator(); - menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program"); + menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog"); + menuFile->AppendSeparator(); + menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program"); wxMenu *menuMapMode = new wxMenu; menuMapMode->Append( MapMode_Text, "&TEXT map mode" ); @@ -363,6 +1173,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) menuColour->Append( Colour_TextBackground, "Text background..." ); menuColour->Append( Colour_Background, "Background colour..." ); menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE ); + menuColour->Append( Colour_TextureBackgound, "Draw textured background\tCtrl-T", "", TRUE); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; @@ -388,9 +1199,12 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) m_xAxisReversed = m_yAxisReversed = FALSE; m_backgroundMode = wxSOLID; + m_colourForeground = *wxRED; + m_colourBackground = *wxBLUE; + m_textureBackground = FALSE; m_canvas = new MyCanvas( this ); - m_canvas->SetScrollbars( 10, 10, 100, 200 ); + m_canvas->SetScrollbars( 10, 10, 100, 240 ); } // event handlers @@ -404,16 +1218,23 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { wxString msg; - msg.Printf( _T("This is the about dialog of the drawing sample.\n") - _T("Copyright (c) Robert Roebling 1999") + msg.Printf( wxT("This is the about dialog of the drawing sample.\n") + wxT("This sample tests various primitive drawing functions\n") + wxT("without any tests to prevent flicker.\n") + wxT("Copyright (c) Robert Roebling 1999") ); wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this); } -void MyFrame::OnOption(wxCommandEvent &event) +void MyFrame::OnShow(wxCommandEvent& event) +{ + m_canvas->Show((ScreenToShow)(event.GetId() - MenuShow_First)); +} + +void MyFrame::OnOption(wxCommandEvent& event) { - switch (event.GetInt()) + switch (event.GetId()) { case MapMode_Text: m_mapMode = wxMM_TEXT; @@ -488,6 +1309,10 @@ void MyFrame::OnOption(wxCommandEvent &event) : wxSOLID; break; + case Colour_TextureBackgound: + m_textureBackground = ! m_textureBackground; + break; + default: // skip Refresh() return; @@ -504,19 +1329,6 @@ void MyFrame::PrepareDC(wxDC& dc) dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed ); } -void MyFrame::OnMouseMove(wxMouseEvent &event) -{ - wxClientDC dc(this); - PrepareDC(dc); - - wxPoint pos = event.GetPosition(); - long x = dc.DeviceToLogicalX( pos.x ); - long y = dc.DeviceToLogicalY( pos.y ); - wxString str; - str.Printf( "Current mouse position: %d,%d", (int)x, (int)y ); - SetStatusText( str ); -} - wxColour MyFrame::SelectColour() { wxColour col;