X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/70bdacfc8edfbd1b713d0438a6385a7e1520b28d..c3016fd626994c6f9f555e03076a497eb1f5797c:/samples/drawing/drawing.cpp diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp index 1d6f9e8718..5c71ee2b09 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 +36,49 @@ #endif #include "wx/colordlg.h" +#include "wx/image.h" +#include "wx/artprov.h" // ---------------------------------------------------------------------------- // ressources // ---------------------------------------------------------------------------- + // the application icon -#if defined(__WXGTK__) || defined(__WXMOTIF__) +#if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__) #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_Brushes, + 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 +94,13 @@ 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 +115,14 @@ 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 +146,31 @@ 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 DrawTestLines( int x, int y, int width, wxDC &dc ); + void DrawTestPoly(wxDC& dc); + void DrawTestBrushes(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); + + void DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime); + private: + MyFrame *m_owner; + + ScreenToShow m_show; + wxBitmap m_smile_bmp; + wxIcon m_std_icon; + DECLARE_EVENT_TABLE() }; @@ -121,8 +182,20 @@ 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_ShowBrushes, + File_ShowPolygons, + File_ShowMask, + File_ShowOps, + File_ShowRegions, + File_ShowCircles, + MenuShow_Last = File_ShowCircles, MenuOption_First, @@ -145,13 +218,16 @@ enum LogicalOrigin_MoveUp, LogicalOrigin_MoveLeft, LogicalOrigin_MoveRight, + LogicalOrigin_Set, + LogicalOrigin_Restore, Colour_TextForeground, Colour_TextBackground, Colour_Background, Colour_BackgroundMode, + Colour_TextureBackgound, - MenuOption_Last = Colour_BackgroundMode + MenuOption_Last = Colour_TextureBackgound }; // ---------------------------------------------------------------------------- @@ -174,6 +250,59 @@ 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 +314,41 @@ 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(wxT("Can't load one of the bitmap files needed ") + wxT("for this sample from the current or parent ") + wxT("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; + + gs_bmpNoMask = NULL; + gs_bmpWithColMask = NULL; + gs_bmpMask = NULL; + gs_bmpWithMask = NULL; + gs_bmp4 = NULL; + gs_bmp4_mono = NULL; + gs_bmp36 = NULL; +} + // ---------------------------------------------------------------------------- // MyCanvas // ---------------------------------------------------------------------------- @@ -199,65 +357,550 @@ 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 "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 = wxArtProvider::GetIcon(wxART_INFORMATION); +} + +void MyCanvas::DrawTestBrushes(wxDC& dc) +{ + static const wxCoord WIDTH = 200; + static const wxCoord HEIGHT = 80; + + wxCoord x = 10, + y = 10; + + dc.SetBrush(wxBrush(*wxGREEN, wxSOLID)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Solid green", x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*wxRED, wxCROSSDIAG_HATCH)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Hatched red", x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*gs_bmpMask)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Stipple mono", x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*gs_bmpNoMask)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Stipple colour", x + 10, y + 10); +} + +void MyCanvas::DrawTestPoly(wxDC& dc) { - m_owner = parent; + wxBrush brushHatch(*wxRED, wxFDIAGONAL_HATCH); + dc.SetBrush(brushHatch); + + wxPoint star[5]; + star[0] = wxPoint(100, 60); + star[1] = wxPoint(60, 150); + star[2] = wxPoint(160, 100); + star[3] = wxPoint(40, 100); + star[4] = wxPoint(140, 150); + + dc.DrawText("You should see two (irregular) stars below, the left one " + "hatched", 10, 10); + dc.DrawText("except for the central region and the right " + "one entirely hatched", 10, 30); + + dc.DrawPolygon(WXSIZEOF(star), star); + dc.DrawPolygon(WXSIZEOF(star), star, 160, 0, wxWINDING_RULE); } void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc ) { - dc.SetPen( wxPen( "black", width, wxSOLID) ); + dc.SetPen( wxPen( wxT("black"), width, wxSOLID) ); dc.SetBrush( *wxRED_BRUSH ); - dc.DrawRectangle( x+10, y+10, 400, 190 ); - - dc.SetPen( wxPen( "black", width, wxSOLID) ); - dc.DrawLine( x+20, y+20, 390, y+20 ); - dc.SetPen( wxPen( "black", width, wxDOT) ); - dc.DrawLine( x+20, y+30, 390, y+30 ); - dc.SetPen( wxPen( "black", width, wxSHORT_DASH) ); - dc.DrawLine( x+20, y+40, 390, y+40 ); - dc.SetPen( wxPen( "black", width, wxLONG_DASH) ); - dc.DrawLine( x+20, y+50, 390, y+50 ); - dc.SetPen( wxPen( "black", width, wxDOT_DASH) ); - dc.DrawLine( x+20, y+60, 390, y+60 ); - - dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) ); - dc.DrawLine( x+20, y+70, 390, y+70 ); - dc.SetPen( wxPen( "black", width, wxCROSSDIAG_HATCH) ); - dc.DrawLine( x+20, y+80, 390, y+80 ); - dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) ); - dc.DrawLine( x+20, y+90, 390, y+90 ); - dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) ); - dc.DrawLine( x+20, y+100, 390, y+100 ); - dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) ); - dc.DrawLine( x+20, y+110, 390, y+110 ); - dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) ); - dc.DrawLine( x+20, y+120, 390, y+120 ); - - wxPen ud( "black", width, wxUSER_DASH ); + 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, 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::DrawDefault(wxDC& dc) +{ + // mark the origin + dc.DrawCircle(0, 0, 10); + //flood fill using brush, starting at 1,1 and replacing whatever colour we find there + dc.SetBrush(wxBrush(wxColour(128,128,0), wxSOLID)); + wxColour tmpColour ; + dc.GetPixel(1,1, &tmpColour); + dc.FloodFill(1,1, tmpColour, wxFLOOD_SURFACE); + + 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.ConvertToImage(); + image.Rescale( 60,210 ); + bitmap = wxBitmap(image); + 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", + 10, 5 + dc.GetCharHeight()); + dc.DrawText("The second copy should be identical but right part of it " + "should be offset by 10 pixels.", + 10, 5 + 2*dc.GetCharHeight()); + + DrawRegionsHelper(dc, 10, TRUE); + DrawRegionsHelper(dc, 350, FALSE); +} + +void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime) +{ + wxCoord y = 100; + + dc.DestroyClippingRegion(); + dc.SetBrush( *wxWHITE_BRUSH ); + dc.SetPen( *wxTRANSPARENT_PEN ); + dc.DrawRectangle( x, y, 310, 310 ); + + dc.SetClippingRegion( x + 10, y + 10, 100, 270 ); + + dc.SetBrush( *wxRED_BRUSH ); + dc.DrawRectangle( x, y, 310, 310 ); + + dc.SetClippingRegion( x + 10, y + 10, 100, 100 ); + + dc.SetBrush( *wxCYAN_BRUSH ); + dc.DrawRectangle( x, y, 310, 310 ); + + dc.DestroyClippingRegion(); + + wxRegion region(x + 110, y + 20, 100, 270); + if ( !firstTime ) + region.Offset(10, 10); + + dc.SetClippingRegion(region); + + dc.SetBrush( *wxGREY_BRUSH ); + dc.DrawRectangle( x, y, 310, 310 ); + + if (m_smile_bmp.Ok()) + { + dc.DrawBitmap( m_smile_bmp, x + 150, y + 150, TRUE ); + dc.DrawBitmap( m_smile_bmp, x + 130, y + 10, TRUE ); + dc.DrawBitmap( m_smile_bmp, x + 130, y + 280, TRUE ); + dc.DrawBitmap( m_smile_bmp, x + 100, y + 70, TRUE ); + dc.DrawBitmap( m_smile_bmp, x + 200, y + 70, TRUE ); + } } void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) { wxPaintDC dc(this); PrepareDC(dc); + m_owner->PrepareDC(dc); dc.SetBackgroundMode( m_owner->m_backgroundMode ); @@ -268,43 +911,76 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) 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__) - // not implemented in wxGTK or wxMOTIF :-( - dc.FloodFill(0, 0, wxColour(255, 0, 0)); -#endif // + if ( m_owner->m_textureBackground) { + if ( ! m_owner->m_backgroundBrush.Ok() ) { + wxBrush b(wxColour(0,128,0), wxSOLID); + dc.SetBackground(b); + } + } - dc.DrawText( "This is text", 110, 10 ); + dc.Clear(); - dc.SetFont( wxFont( 18, wxSWISS, 0, 0 ) ); + 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); + } - dc.DrawText( "This is Swiss 18pt text.", 110, 40 ); + switch ( m_show ) + { + case Show_Default: + DrawDefault(dc); + break; - long length; - 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 ); + case Show_Circles: + DrawCircles(dc); + break; - dc.DrawRectangle( 100, 40, 4, height ); + case Show_Regions: + DrawRegions(dc); + break; - text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() ); - dc.DrawText( text, 110, 120 ); + 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; - dc.DrawIcon( wxICON(mondrian), 310, 40 ); - - DrawTestLines( 0, 200, 0, dc ); + case Show_Brushes: + DrawTestBrushes(dc); + break; - DrawTestLines( 0, 400, 1, dc ); + case Show_Polygons: + DrawTestPoly(dc); + break; + + case Show_Mask: + DrawImages(dc); + break; - DrawTestLines( 0, 600, 2, dc ); + case Show_Ops: + DrawWithLogicalOps(dc); + break; + } +} - DrawTestLines( 0, 800, 6, dc ); +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 ); } // ---------------------------------------------------------------------------- @@ -315,23 +991,36 @@ 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() // frame constructor MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) - : wxFrame((wxFrame *)NULL, -1, title, pos, size) + : wxFrame((wxFrame *)NULL, -1, title, pos, size, + wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE) { // set the frame icon 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_ShowBrushes, "&Brushes screen\tF4"); + menuFile->Append(File_ShowPolygons, "&Polygons screen\tF5"); + menuFile->Append(File_ShowMask, "&Mask screen\tF6"); + menuFile->Append(File_ShowOps, "&ROP screen\tF7"); + menuFile->Append(File_ShowRegions, "Re&gions screen\tF8"); + menuFile->Append(File_ShowCircles, "&Circles screen\tF9"); 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" ); @@ -341,12 +1030,12 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) menuMapMode->Append( MapMode_Metric, "&METRIC map mode" ); wxMenu *menuUserScale = new wxMenu; - menuUserScale->Append( UserScale_StretchHoriz, "Stretch horizontally\tCtrl-H" ); - menuUserScale->Append( UserScale_ShrinkHoriz, "Shrink horizontally\tCtrl-G" ); - menuUserScale->Append( UserScale_StretchVertic, "Stretch vertically\tCtrl-V" ); - menuUserScale->Append( UserScale_ShrinkVertic, "Shrink vertically\tCtrl-W" ); + menuUserScale->Append( UserScale_StretchHoriz, "Stretch &horizontally\tCtrl-H" ); + menuUserScale->Append( UserScale_ShrinkHoriz, "Shrin&k horizontally\tCtrl-G" ); + menuUserScale->Append( UserScale_StretchVertic, "Stretch &vertically\tCtrl-V" ); + menuUserScale->Append( UserScale_ShrinkVertic, "&Shrink vertically\tCtrl-W" ); menuUserScale->AppendSeparator(); - menuUserScale->Append( UserScale_Restore, "Restore to normal\tCtrl-0" ); + menuUserScale->Append( UserScale_Restore, "&Restore to normal\tCtrl-0" ); wxMenu *menuAxis = new wxMenu; menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE ); @@ -357,20 +1046,24 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) menuLogical->Append( LogicalOrigin_MoveUp, "Move &up\tCtrl-U" ); menuLogical->Append( LogicalOrigin_MoveLeft, "Move &right\tCtrl-L" ); menuLogical->Append( LogicalOrigin_MoveRight, "Move &left\tCtrl-R" ); + menuLogical->AppendSeparator(); + menuLogical->Append( LogicalOrigin_Set, "Set to (&100, 100)\tShift-Ctrl-1" ); + menuLogical->Append( LogicalOrigin_Restore, "&Restore to normal\tShift-Ctrl-0" ); wxMenu *menuColour = new wxMenu; - menuColour->Append( Colour_TextForeground, "Text foreground..." ); - menuColour->Append( Colour_TextBackground, "Text background..." ); - menuColour->Append( Colour_Background, "Background colour..." ); - menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE ); + menuColour->Append( Colour_TextForeground, "Text &foreground..." ); + 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 back&ground\tCtrl-T", "", TRUE); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; menuBar->Append(menuFile, "&File"); - menuBar->Append(menuMapMode, "&MapMode"); - menuBar->Append(menuUserScale, "&UserScale"); + menuBar->Append(menuMapMode, "&Mode"); + menuBar->Append(menuUserScale, "&Scale"); menuBar->Append(menuAxis, "&Axis"); - menuBar->Append(menuLogical, "&LogicalOrigin"); + menuBar->Append(menuLogical, "&Origin"); menuBar->Append(menuColour, "&Colours"); // ... and attach this menu bar to the frame @@ -388,9 +1081,12 @@ 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 +1100,23 @@ 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 attempts 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; @@ -443,6 +1146,14 @@ void MyFrame::OnOption(wxCommandEvent &event) case LogicalOrigin_MoveRight: m_xLogicalOrigin -= 10; break; + case LogicalOrigin_Set: + m_xLogicalOrigin = + m_yLogicalOrigin = -100; + break; + case LogicalOrigin_Restore: + m_xLogicalOrigin = + m_yLogicalOrigin = 0; + break; case UserScale_StretchHoriz: m_xUserScale *= 1.10; @@ -488,6 +1199,10 @@ void MyFrame::OnOption(wxCommandEvent &event) : wxSOLID; break; + case Colour_TextureBackgound: + m_textureBackground = ! m_textureBackground; + break; + default: // skip Refresh() return; @@ -498,23 +1213,10 @@ void MyFrame::OnOption(wxCommandEvent &event) void MyFrame::PrepareDC(wxDC& dc) { - dc.SetMapMode( m_mapMode ); - dc.SetUserScale( m_xUserScale, m_yUserScale ); dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); 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 ); + dc.SetUserScale( m_xUserScale, m_yUserScale ); + dc.SetMapMode( m_mapMode ); } wxColour MyFrame::SelectColour()