///////////////////////////////////////////////////////////////////////////// // Name: samples/drawing/drawing.cpp // Purpose: shows and tests wxDC features // Author: Robert Roebling // Modified by: // Created: 04/01/98 // Copyright: (c) Robert Roebling // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // ============================================================================ // declarations // ============================================================================ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif // for all others, include the necessary headers (this file is usually all you // need because it includes almost all "standard" wxWidgets headers #ifndef WX_PRECOMP #include "wx/wx.h" #endif #include "wx/colordlg.h" #include "wx/image.h" #include "wx/artprov.h" #include "wx/dcbuffer.h" #include "wx/dcgraph.h" #include "wx/overlay.h" #include "wx/graphics.h" #include "wx/filename.h" #include "wx/metafile.h" #include "wx/settings.h" #if wxUSE_SVG #include "wx/dcsvg.h" #endif #if wxUSE_POSTSCRIPT #include "wx/dcps.h" #endif // ---------------------------------------------------------------------------- // resources // ---------------------------------------------------------------------------- // the application icon #ifndef wxHAS_IMAGES_IN_RESOURCES #include "../sample.xpm" #endif // Standard DC supports drawing with alpha on OSX and GTK3. #if defined(__WXOSX__) || defined(__WXGTK3__) #define wxDRAWING_DC_SUPPORTS_ALPHA 1 #else #define wxDRAWING_DC_SUPPORTS_ALPHA 0 #endif // __WXOSX__ || __WXGTK3__ // ---------------------------------------------------------------------------- // 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 // ---------------------------------------------------------------------------- // Define a new application type, each program should derive a class from wxApp class MyApp : public wxApp { public: // override base class virtuals // ---------------------------- // this one is called on application startup and is a good place for the app // 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() wxOVERRIDE; virtual int OnExit() wxOVERRIDE { DeleteBitmaps(); return 0; } protected: void DeleteBitmaps(); bool LoadImages(); }; class MyFrame; // define a scrollable canvas for drawing onto class MyCanvas: public wxScrolledWindow { public: MyCanvas( MyFrame *parent ); void OnPaint(wxPaintEvent &event); void OnMouseMove(wxMouseEvent &event); void OnMouseDown(wxMouseEvent &event); void OnMouseUp(wxMouseEvent &event); void ToShow(int show) { m_show = show; Refresh(); } int GetPage() { return m_show; } // set or remove the clipping region void Clip(bool clip) { m_clip = clip; Refresh(); } #if wxUSE_GRAPHICS_CONTEXT bool HasRenderer() const { return m_renderer != NULL; } void UseGraphicRenderer(wxGraphicsRenderer* renderer); bool IsDefaultRenderer() const { if ( !m_renderer ) return false; return m_renderer == wxGraphicsRenderer::GetDefaultRenderer(); } wxGraphicsRenderer* GetRenderer() const { return m_renderer; } void EnableAntiAliasing(bool use) { m_useAntiAliasing = use; Refresh(); } #endif // wxUSE_GRAPHICS_CONTEXT void UseBuffer(bool use) { m_useBuffer = use; Refresh(); } void ShowBoundingBox(bool show) { m_showBBox = show; Refresh(); } void GetDrawingSize(int* width, int* height) const; void Draw(wxDC& dc); protected: enum DrawMode { Draw_Normal, Draw_Stretch }; void DrawTestLines( int x, int y, int width, wxDC &dc ); void DrawCrossHair(int x, int y, int width, int heigth, wxDC &dc); void DrawTestPoly(wxDC& dc); void DrawTestBrushes(wxDC& dc); void DrawText(wxDC& dc); void DrawImages(wxDC& dc, DrawMode mode); void DrawWithLogicalOps(wxDC& dc); #if wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT void DrawAlpha(wxDC& dc); #endif #if wxUSE_GRAPHICS_CONTEXT void DrawGraphics(wxGraphicsContext* gc); #endif void DrawRegions(wxDC& dc); void DrawCircles(wxDC& dc); void DrawSplines(wxDC& dc); void DrawDefault(wxDC& dc); void DrawGradients(wxDC& dc); void DrawSystemColours(wxDC& dc); void DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime); private: MyFrame *m_owner; int m_show; wxBitmap m_smile_bmp; wxIcon m_std_icon; bool m_clip; wxOverlay m_overlay; bool m_rubberBand; wxPoint m_anchorpoint; wxPoint m_currentpoint; #if wxUSE_GRAPHICS_CONTEXT wxGraphicsRenderer* m_renderer; bool m_useAntiAliasing; #endif bool m_useBuffer; bool m_showBBox; wxCoord m_sizeX; wxCoord m_sizeY; wxDECLARE_EVENT_TABLE(); }; // Define a new frame type: this is going to be our main frame class MyFrame : public wxFrame { public: // ctor(s) MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size); // event handlers (these functions should _not_ be virtual) void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); void OnClip(wxCommandEvent& event); #if wxUSE_GRAPHICS_CONTEXT void OnGraphicContextNone(wxCommandEvent& WXUNUSED(event)) { m_canvas->UseGraphicRenderer(NULL); } void OnGraphicContextDefault(wxCommandEvent& WXUNUSED(event)) { m_canvas->UseGraphicRenderer(wxGraphicsRenderer::GetDefaultRenderer()); } #if wxUSE_CAIRO void OnGraphicContextCairo(wxCommandEvent& WXUNUSED(event)) { m_canvas->UseGraphicRenderer(wxGraphicsRenderer::GetCairoRenderer()); } #endif // wxUSE_CAIRO #ifdef __WXMSW__ #if wxUSE_GRAPHICS_GDIPLUS void OnGraphicContextGDIPlus(wxCommandEvent& WXUNUSED(event)) { m_canvas->UseGraphicRenderer(wxGraphicsRenderer::GetGDIPlusRenderer()); } #endif #if wxUSE_GRAPHICS_DIRECT2D void OnGraphicContextDirect2D(wxCommandEvent& WXUNUSED(event)) { m_canvas->UseGraphicRenderer(wxGraphicsRenderer::GetDirect2DRenderer()); } #endif #endif // __WXMSW__ void OnAntiAliasing(wxCommandEvent& event) { m_canvas->EnableAntiAliasing(event.IsChecked()); } void OnAntiAliasingUpdateUI(wxUpdateUIEvent& event) { event.Enable(m_canvas->GetRenderer() != NULL); } #endif // wxUSE_GRAPHICS_CONTEXT void OnBuffer(wxCommandEvent& event); void OnCopy(wxCommandEvent& event); void OnSave(wxCommandEvent& event); void OnShow(wxCommandEvent &event); void OnOption(wxCommandEvent &event); void OnBoundingBox(wxCommandEvent& evt); void OnBoundingBoxUpdateUI(wxUpdateUIEvent& evt); #if wxUSE_COLOURDLG wxColour SelectColour(); #endif // wxUSE_COLOURDLG void PrepareDC(wxDC& dc) wxOVERRIDE; int m_backgroundMode; int m_textureBackground; wxMappingMode m_mapMode; double m_xUserScale; double m_yUserScale; int m_xLogicalOrigin; int m_yLogicalOrigin; bool m_xAxisReversed, m_yAxisReversed; #if wxUSE_DC_TRANSFORM_MATRIX wxDouble m_transform_dx; wxDouble m_transform_dy; wxDouble m_transform_scx; wxDouble m_transform_scy; wxDouble m_transform_rot; #endif // wxUSE_DC_TRANSFORM_MATRIX wxColour m_colourForeground, // these are _text_ colours m_colourBackground; wxBrush m_backgroundBrush; MyCanvas *m_canvas; wxMenuItem *m_menuItemUseDC; private: // any class wishing to process wxWidgets events must use this macro wxDECLARE_EVENT_TABLE(); }; // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- // IDs for the controls and the menu commands enum { // menu items File_Quit = wxID_EXIT, File_About = wxID_ABOUT, MenuShow_First = wxID_HIGHEST, File_ShowDefault = MenuShow_First, File_ShowText, File_ShowLines, File_ShowBrushes, File_ShowPolygons, File_ShowMask, File_ShowMaskStretch, File_ShowOps, File_ShowRegions, File_ShowCircles, File_ShowSplines, #if wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT File_ShowAlpha, #endif // wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT #if wxUSE_GRAPHICS_CONTEXT File_ShowGraphics, #endif File_ShowSystemColours, File_ShowGradients, MenuShow_Last = File_ShowGradients, #if wxUSE_GRAPHICS_CONTEXT File_DC, File_GC_Default, #if wxUSE_CAIRO File_GC_Cairo, #endif // wxUSE_CAIRO #ifdef __WXMSW__ #if wxUSE_GRAPHICS_GDIPLUS File_GC_GDIPlus, #endif #if wxUSE_GRAPHICS_DIRECT2D File_GC_Direct2D, #endif #endif // __WXMSW__ #endif // wxUSE_GRAPHICS_CONTEXT File_BBox, File_Clip, File_Buffer, #if wxUSE_GRAPHICS_CONTEXT File_AntiAliasing, #endif File_Copy, File_Save, MenuOption_First, MapMode_Text = MenuOption_First, MapMode_Lometric, MapMode_Twips, MapMode_Points, MapMode_Metric, UserScale_StretchHoriz, UserScale_ShrinkHoriz, UserScale_StretchVertic, UserScale_ShrinkVertic, UserScale_Restore, AxisMirror_Horiz, AxisMirror_Vertic, LogicalOrigin_MoveDown, LogicalOrigin_MoveUp, LogicalOrigin_MoveLeft, LogicalOrigin_MoveRight, LogicalOrigin_Set, LogicalOrigin_Restore, #if wxUSE_DC_TRANSFORM_MATRIX TransformMatrix_Set, TransformMatrix_Reset, #endif // wxUSE_DC_TRANSFORM_MATRIX #if wxUSE_COLOURDLG Colour_TextForeground, Colour_TextBackground, Colour_Background, #endif // wxUSE_COLOURDLG Colour_BackgroundMode, Colour_TextureBackgound, MenuOption_Last = Colour_TextureBackgound }; // ---------------------------------------------------------------------------- // event tables and other macros for wxWidgets // ---------------------------------------------------------------------------- // Create a new application object: this macro will allow wxWidgets to create // the application object during program execution (it's better than using a // static object for many reasons) and also declares the accessor function // wxGetApp() which will return the reference of the right type (i.e. MyApp and // not wxApp) wxIMPLEMENT_APP(MyApp); // ============================================================================ // implementation // ============================================================================ // ---------------------------------------------------------------------------- // 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; // special hack for Unix in-tree sample build, don't do this in real // programs, use wxStandardPaths instead pathList.Add(wxFileName(argv[0]).GetPath()); pathList.Add("."); pathList.Add(".."); pathList.Add("../drawing"); pathList.Add("../../../samples/drawing"); 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() { if ( !wxApp::OnInit() ) return false; #if wxUSE_LIBPNG wxImage::AddHandler( new wxPNGHandler ); #endif // Create the main application window MyFrame *frame = new MyFrame("Drawing sample", wxDefaultPosition, wxSize(550, 840)); // Show it frame->Show(true); 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."); // still continue, the sample can be used without images too if they're // missing for whatever reason } return true; } void MyApp::DeleteBitmaps() { wxDELETE(gs_bmpNoMask); wxDELETE(gs_bmpWithColMask); wxDELETE(gs_bmpMask); wxDELETE(gs_bmpWithMask); wxDELETE(gs_bmp4); wxDELETE(gs_bmp4_mono); wxDELETE(gs_bmp36); } // ---------------------------------------------------------------------------- // MyCanvas // ---------------------------------------------------------------------------- // the event tables connect the wxWidgets events with the functions (event // handlers) which process them. wxBEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) EVT_PAINT (MyCanvas::OnPaint) EVT_MOTION (MyCanvas::OnMouseMove) EVT_LEFT_DOWN (MyCanvas::OnMouseDown) EVT_LEFT_UP (MyCanvas::OnMouseUp) wxEND_EVENT_TABLE() #include "smile.xpm" MyCanvas::MyCanvas(MyFrame *parent) : wxScrolledWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxHSCROLL | wxVSCROLL) { m_owner = parent; m_show = File_ShowDefault; m_smile_bmp = wxBitmap(smile_xpm); m_std_icon = wxArtProvider::GetIcon(wxART_INFORMATION); m_clip = false; m_rubberBand = false; #if wxUSE_GRAPHICS_CONTEXT m_renderer = NULL; m_useAntiAliasing = true; #endif m_useBuffer = false; m_showBBox = false; m_sizeX = 0; m_sizeY = 0; } void MyCanvas::DrawTestBrushes(wxDC& dc) { static const wxCoord WIDTH = 200; static const wxCoord HEIGHT = 80; wxCoord x = 10, y = 10; dc.SetBrush(*wxGREEN_BRUSH); dc.DrawRectangle(x, y, WIDTH, HEIGHT); dc.DrawText("Solid green", x + 10, y + 10); y += HEIGHT; dc.SetBrush(wxBrush(*wxRED, wxBRUSHSTYLE_CROSSDIAG_HATCH)); dc.DrawRectangle(x, y, WIDTH, HEIGHT); dc.DrawText("Diagonally hatched red", x + 10, y + 10); y += HEIGHT; dc.SetBrush(wxBrush(*wxBLUE, wxBRUSHSTYLE_CROSS_HATCH)); dc.DrawRectangle(x, y, WIDTH, HEIGHT); dc.DrawText("Cross hatched blue", x + 10, y + 10); y += HEIGHT; dc.SetBrush(wxBrush(*wxCYAN, wxBRUSHSTYLE_VERTICAL_HATCH)); dc.DrawRectangle(x, y, WIDTH, HEIGHT); dc.DrawText("Vertically hatched cyan", x + 10, y + 10); y += HEIGHT; dc.SetBrush(wxBrush(*wxBLACK, wxBRUSHSTYLE_HORIZONTAL_HATCH)); dc.DrawRectangle(x, y, WIDTH, HEIGHT); dc.DrawText("Horizontally hatched black", 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) { wxBrush brushHatch(*wxRED, wxBRUSHSTYLE_FDIAGONAL_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.DrawText("The third star only has a hatched outline", 10, 50); dc.DrawPolygon(WXSIZEOF(star), star, 0, 30); dc.DrawPolygon(WXSIZEOF(star), star, 160, 30, wxWINDING_RULE); wxBrush brushHatchGreen(*wxGREEN, wxBRUSHSTYLE_FDIAGONAL_HATCH); dc.SetBrush(brushHatchGreen); wxPoint star2[10]; star2[0] = wxPoint(0, 100); star2[1] = wxPoint(-59, -81); star2[2] = wxPoint(95, 31); star2[3] = wxPoint(-95, 31); star2[4] = wxPoint(59, -81); star2[5] = wxPoint(0, 80); star2[6] = wxPoint(-47, -64); star2[7] = wxPoint(76, 24); star2[8] = wxPoint(-76, 24); star2[9] = wxPoint(47, -64); int count[2] = {5, 5}; dc.DrawPolyPolygon(WXSIZEOF(count), count, star2, 450, 150); } void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc ) { dc.SetPen( wxPen( *wxBLACK, width ) ); dc.SetBrush( *wxWHITE_BRUSH ); 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( *wxBLACK, width ) ); dc.DrawLine( x+20, y+20, 100, y+20 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_DOT) ); dc.DrawLine( x+20, y+30, 100, y+30 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_SHORT_DASH) ); dc.DrawLine( x+20, y+40, 100, y+40 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_LONG_DASH) ); dc.DrawLine( x+20, y+50, 100, y+50 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_DOT_DASH) ); dc.DrawLine( x+20, y+60, 100, y+60 ); dc.DrawText("Hatches", x + 150, y + 70); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_BDIAGONAL_HATCH) ); dc.DrawLine( x+20, y+70, 100, y+70 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_CROSSDIAG_HATCH) ); dc.DrawLine( x+20, y+80, 100, y+80 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_FDIAGONAL_HATCH) ); dc.DrawLine( x+20, y+90, 100, y+90 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_CROSS_HATCH) ); dc.DrawLine( x+20, y+100, 100, y+100 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_HORIZONTAL_HATCH) ); dc.DrawLine( x+20, y+110, 100, y+110 ); dc.SetPen( wxPen( *wxBLACK, width, wxPENSTYLE_VERTICAL_HATCH) ); dc.DrawLine( x+20, y+120, 100, y+120 ); dc.DrawText("User dash", x + 150, y + 140); wxPen ud( *wxBLACK, width, wxPENSTYLE_USER_DASH ); wxDash dash1[6]; dash1[0] = 8; // Long dash <---------+ dash1[1] = 2; // Short gap | dash1[2] = 3; // Short dash | dash1[3] = 2; // Short gap | dash1[4] = 3; // Short dash | dash1[5] = 2; // Short gap and repeat + ud.SetDashes( 6, dash1 ); dc.SetPen( ud ); dc.DrawLine( x+20, y+140, 100, y+140 ); dash1[0] = 5; // Make first dash shorter ud.SetDashes( 6, dash1 ); dc.SetPen( ud ); dc.DrawLine( x+20, y+150, 100, y+150 ); dash1[2] = 5; // Make second dash longer ud.SetDashes( 6, dash1 ); dc.SetPen( ud ); dc.DrawLine( x+20, y+160, 100, y+160 ); dash1[4] = 5; // Make third dash longer ud.SetDashes( 6, dash1 ); dc.SetPen( ud ); dc.DrawLine( x+20, y+170, 100, y+170 ); wxPen penWithCap(*wxBLACK, width); dc.SetPen(penWithCap); dc.DrawText("Default cap", x+270, y+40); dc.DrawLine( x+200, y+50, x+250, y+50); penWithCap.SetCap(wxCAP_BUTT); dc.SetPen(penWithCap); dc.DrawText("Butt ", x+270, y+60); dc.DrawLine( x+200, y+70, x+250, y+70); penWithCap.SetCap(wxCAP_ROUND); dc.SetPen(penWithCap); dc.DrawText("Round cap", x+270, y+80); dc.DrawLine( x+200, y+90, x+250, y+90); penWithCap.SetCap(wxCAP_PROJECTING); dc.SetPen(penWithCap); dc.DrawText("Projecting cap", x+270, y+100); dc.DrawLine( x+200, y+110, x+250, y+110); } void MyCanvas::DrawCrossHair(int x, int y, int width, int heigth, wxDC &dc) { dc.DrawText("Cross hair", x + 10, y + 10); dc.SetClippingRegion(x, y, width, heigth); dc.SetPen(wxPen(*wxBLUE, 2)); dc.CrossHair(x + width / 2, y + heigth / 2); dc.DestroyClippingRegion(); } void MyCanvas::DrawDefault(wxDC& dc) { // Draw circle centered at the origin, then flood fill it with a different // color. Done with a wxMemoryDC because Blit (used by generic // wxDoFloodFill) from a window that is being painted gives unpredictable // results on wxGTK { wxImage img(21, 21, false); img.Clear(1); wxBitmap bmp(img); { wxMemoryDC mdc(bmp); mdc.SetBrush(dc.GetBrush()); mdc.SetPen(dc.GetPen()); mdc.DrawCircle(10, 10, 10); wxColour c; if (mdc.GetPixel(11, 11, &c)) { mdc.SetBrush(wxColour(128, 128, 0)); mdc.FloodFill(11, 11, c, wxFLOOD_SURFACE); } } bmp.SetMask(new wxMask(bmp, wxColour(1, 1, 1))); dc.DrawBitmap(bmp, -10, -10, true); } 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.IsOk()) 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 height 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); memdc2.SetBackground(*wxYELLOW_BRUSH); memdc2.Clear(); // 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(*wxYELLOW_PEN); dc.SetBrush(*wxYELLOW_BRUSH); 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( wxFontInfo(12).Family(wxFONTFAMILY_MODERN).Underlined() ); 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 MSW (it is not TrueType) dc.SetFont( *wxSWISS_FONT ); wxString text; dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT); for ( int n = -180; n < 180; n += 30 ) { text.Printf(" %d rotated text", n); dc.DrawRotatedText(text , 400, 400, n); } dc.SetFont( wxFontInfo(18).Family(wxFONTFAMILY_SWISS) ); dc.DrawText( "This is Swiss 18pt text.", 110, 40 ); wxCoord length; wxCoord height; wxCoord descent; dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent ); text.Printf( "Dimensions are length %d, height %d, descent %d", length, height, descent ); dc.DrawText( text, 110, 80 ); text.Printf( "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); // text drawing should ignore logical function dc.DrawText( "There should be a text below", 110, y ); dc.DrawRectangle( 110, y, 100, height ); y += height; dc.DrawText( "Visible text", 110, y ); dc.DrawRectangle( 110, y, 100, height ); dc.DrawText( "Visible text", 110, y ); dc.DrawRectangle( 110, y, 100, height ); dc.SetLogicalFunction(wxCOPY); y += height; dc.DrawRectangle( 110, y, 100, height ); dc.DrawText( "Another visible text", 110, y ); y += height; dc.DrawText("And\nmore\ntext on\nmultiple\nlines", 110, y); y += 5*height; dc.SetTextForeground(*wxBLUE); dc.DrawRotatedText("Rotated text\ncan have\nmultiple lines\nas well", 110, y, 15); y += 7*height; dc.SetFont(wxFontInfo(12).Family(wxFONTFAMILY_TELETYPE)); dc.SetTextForeground(wxColour(150, 75, 0)); dc.DrawText("And some text with tab characters:\n123456789012345678901234567890\n\taa\tbbb\tcccc", 10, y); } static const struct { wxString name; wxRasterOperationMode 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, DrawMode mode) { 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); if ( mode == Draw_Stretch ) { dc.StretchBlit(x, y, cx, cy, &memDC, 0, 0, cx/2, cy/2, rasterOperations[n].rop, true); } else { 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)); 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)); 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); } } #if wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT void MyCanvas::DrawAlpha(wxDC& dc) { wxDouble margin = 20 ; wxDouble width = 180 ; wxDouble radius = 30 ; dc.SetPen( wxPen( wxColour( 128, 0, 0 ), 12 )); dc.SetBrush(*wxRED_BRUSH); wxRect r(margin,margin+width*0.66,width,width) ; dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ; dc.SetPen( wxPen( wxColour( 0, 0, 128 ), 12)); dc.SetBrush( wxColour(0, 0, 255, 192) ); r.Offset( width * 0.8 , - width * 0.66 ) ; dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ; dc.SetPen( wxPen( wxColour( 128, 128, 0 ), 12)); dc.SetBrush( wxBrush( wxColour( 192, 192, 0, 192))); r.Offset( width * 0.8 , width *0.5 ) ; dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ; dc.SetPen( *wxTRANSPARENT_PEN ) ; dc.SetBrush( wxBrush( wxColour(255,255,128,128) ) ); dc.DrawRoundedRectangle( 0 , margin + width / 2 , width * 3 , 100 , radius) ; dc.SetTextBackground( wxColour(160, 192, 160, 160) ); dc.SetTextForeground( wxColour(255, 128, 128, 128) ); dc.SetFont( wxFontInfo(40).Family(wxFONTFAMILY_SWISS).Italic() ); dc.DrawText( "Hello!", 120, 80 ); } #endif // wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT #if wxUSE_GRAPHICS_CONTEXT const int BASE = 80.0; const int BASE2 = BASE/2; const int BASE4 = BASE/4; // modeled along Robin Dunn's GraphicsContext.py sample void MyCanvas::DrawGraphics(wxGraphicsContext* gc) { wxFont font = wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT); gc->SetFont(font,*wxBLACK); // make a path that contains a circle and some lines, centered at 0,0 wxGraphicsPath path = gc->CreatePath() ; path.AddCircle( 0, 0, BASE2 ); path.MoveToPoint(0, -BASE2); path.AddLineToPoint(0, BASE2); path.MoveToPoint(-BASE2, 0); path.AddLineToPoint(BASE2, 0); path.CloseSubpath(); path.AddRectangle(-BASE4, -BASE4/2, BASE2, BASE4); // Now use that path to demonstrate various capabilities of the graphics context gc->PushState(); // save current translation/scale/other state gc->Translate(60, 75); // reposition the context origin gc->SetPen(wxPen("navy")); gc->SetBrush(wxBrush("pink")); for( int i = 0 ; i < 3 ; ++i ) { wxString label; switch( i ) { case 0 : label = "StrokePath"; break; case 1 : label = "FillPath"; break; case 2 : label = "DrawPath"; break; } wxDouble w, h; gc->GetTextExtent(label, &w, &h, NULL, NULL); gc->DrawText(label, -w/2, -BASE2-h-4); switch( i ) { case 0 : gc->StrokePath(path); break; case 1 : gc->FillPath(path); break; case 2 : gc->DrawPath(path); break; } gc->Translate(2*BASE, 0); } gc->PopState(); // restore saved state gc->PushState(); // save it again gc->Translate(60, 200); // offset to the lower part of the window gc->DrawText("Scale", 0, -BASE2); gc->Translate(0, 20); gc->SetBrush(wxBrush(wxColour(178, 34, 34, 128)));// 128 == half transparent for( int i = 0 ; i < 8 ; ++i ) { gc->Scale(1.08, 1.08); // increase scale by 8% gc->Translate(5,5); gc->DrawPath(path); } gc->PopState(); // restore saved state gc->PushState(); // save it again gc->Translate(400, 200); gc->DrawText("Rotate", 0, -BASE2); // Move the origin over to the next location gc->Translate(0, 75); // draw our path again, rotating it about the central point, // and changing colors as we go for ( int angle = 0 ; angle < 360 ; angle += 30 ) { gc->PushState(); // save this new current state so we can // pop back to it at the end of the loop wxImage::RGBValue val = wxImage::HSVtoRGB(wxImage::HSVValue(float(angle)/360, 1, 1)); gc->SetBrush(wxBrush(wxColour(val.red, val.green, val.blue, 64))); gc->SetPen(wxPen(wxColour(val.red, val.green, val.blue, 128))); // use translate to artfully reposition each drawn path gc->Translate(1.5 * BASE2 * cos(wxDegToRad(angle)), 1.5 * BASE2 * sin(wxDegToRad(angle))); // use Rotate to rotate the path gc->Rotate(wxDegToRad(angle)); // now draw it gc->DrawPath(path); gc->PopState(); } gc->PopState(); gc->PushState(); gc->Translate(60, 400); const wxString labelText("Scaled smiley inside a square"); gc->DrawText(labelText, 0, 0); // Center a bitmap horizontally wxDouble textWidth; gc->GetTextExtent(labelText, &textWidth, NULL); const wxDouble rectWidth = 100; wxDouble x0 = (textWidth - rectWidth) / 2; gc->DrawRectangle(x0, BASE2, rectWidth, 100); gc->DrawBitmap(m_smile_bmp, x0, BASE2, rectWidth, 100); gc->PopState(); // Draw graphics bitmap and its subbitmap gc->PushState(); gc->Translate(300, 400); gc->DrawText("Smiley as a graphics bitmap", 0, 0); wxGraphicsBitmap gbmp1 = gc->CreateBitmap(m_smile_bmp); gc->DrawBitmap(gbmp1, 0, BASE2, 50, 50); int bmpw = m_smile_bmp.GetWidth(); int bmph = m_smile_bmp.GetHeight(); wxGraphicsBitmap gbmp2 = gc->CreateSubBitmap(gbmp1, 0, bmph/5, bmpw/2, bmph/2); gc->DrawBitmap(gbmp2, 80, BASE2, 50, 50*(bmph/2)/(bmpw/2)); gc->PopState(); } #endif // wxUSE_GRAPHICS_CONTEXT void MyCanvas::DrawCircles(wxDC& dc) { int x = 100, y = 100, r = 20; dc.SetPen( *wxRED_PEN ); dc.SetBrush( *wxGREEN_BRUSH ); 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); // same as above, just transparent brush dc.SetPen( *wxRED_PEN ); dc.SetBrush( *wxTRANSPARENT_BRUSH ); y += 2*r; 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::DrawSplines(wxDC& dc) { #if wxUSE_SPLINES dc.DrawText("Some splines", 10, 5); // values are hardcoded rather than randomly generated // so the output can be compared between native // implementations on platforms with different random // generators const int R = 300; const wxPoint center( R + 20, R + 20 ); const int angles[7] = { 0, 10, 33, 77, 13, 145, 90 }; const int radii[5] = { 100 , 59, 85, 33, 90 }; const int numPoints = 200; wxPoint pts[numPoints]; // background spline calculation unsigned int radius_pos = 0; unsigned int angle_pos = 0; int angle = 0; for ( int i = 0; i < numPoints; i++ ) { angle += angles[ angle_pos ]; int r = R * radii[ radius_pos ] / 100; pts[ i ].x = center.x + (wxCoord)( r * cos( M_PI * angle / 180.0) ); pts[ i ].y = center.y + (wxCoord)( r * sin( M_PI * angle / 180.0) ); angle_pos++; if ( angle_pos >= WXSIZEOF(angles) ) angle_pos = 0; radius_pos++; if ( radius_pos >= WXSIZEOF(radii) ) radius_pos = 0; } // background spline drawing dc.SetPen(*wxRED_PEN); dc.DrawSpline(WXSIZEOF(pts), pts); // less detailed spline calculation wxPoint letters[4][5]; // w letters[0][0] = wxPoint( 0,1); // O O letters[0][1] = wxPoint( 1,3); // * * letters[0][2] = wxPoint( 2,2); // * O * letters[0][3] = wxPoint( 3,3); // * * * * letters[0][4] = wxPoint( 4,1); // O O // x1 letters[1][0] = wxPoint( 5,1); // O*O letters[1][1] = wxPoint( 6,1); // * letters[1][2] = wxPoint( 7,2); // O letters[1][3] = wxPoint( 8,3); // * letters[1][4] = wxPoint( 9,3); // O*O // x2 letters[2][0] = wxPoint( 5,3); // O*O letters[2][1] = wxPoint( 6,3); // * letters[2][2] = wxPoint( 7,2); // O letters[2][3] = wxPoint( 8,1); // * letters[2][4] = wxPoint( 9,1); // O*O // W letters[3][0] = wxPoint(10,0); // O O letters[3][1] = wxPoint(11,3); // * * letters[3][2] = wxPoint(12,1); // * O * letters[3][3] = wxPoint(13,3); // * * * * letters[3][4] = wxPoint(14,0); // O O const int dx = 2 * R / letters[3][4].x; const int h[4] = { -R/2, 0, R/4, R/2 }; for ( int m = 0; m < 4; m++ ) { for ( int n = 0; n < 5; n++ ) { letters[m][n].x = center.x - R + letters[m][n].x * dx; letters[m][n].y = center.y + h[ letters[m][n].y ]; } dc.SetPen( wxPen( *wxBLUE, 1, wxPENSTYLE_DOT) ); dc.DrawLines(5, letters[m]); dc.SetPen( wxPen( *wxBLACK, 4) ); dc.DrawSpline(5, letters[m]); } #else dc.DrawText("Splines not supported.", 10, 5); #endif } void MyCanvas::DrawGradients(wxDC& dc) { static const int TEXT_HEIGHT = 15; // LHS: linear wxRect r(10, 10, 50, 50); dc.DrawText("wxRIGHT", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxRIGHT); r.Offset(0, r.height + 10); dc.DrawText("wxLEFT", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxLEFT); r.Offset(0, r.height + 10); dc.DrawText("wxDOWN", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxDOWN); r.Offset(0, r.height + 10); dc.DrawText("wxUP", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxUP); wxRect gfr = wxRect(r); // RHS: concentric r = wxRect(200, 10, 50, 50); dc.DrawText("Blue inside", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE); r.Offset(0, r.height + 10); dc.DrawText("White inside", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillConcentric(r, *wxWHITE, *wxBLUE); r.Offset(0, r.height + 10); dc.DrawText("Blue in top left corner", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(0, 0)); r.Offset(0, r.height + 10); dc.DrawText("Blue in bottom right corner", r.x, r.y); r.Offset(0, TEXT_HEIGHT); dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(r.width, r.height)); // check that the area filled by the gradient is exactly the interior of // the rectangle r.x = 350; r.y = 30; dc.DrawText("The interior should be filled but", r.x, r.y); r.y += 15; dc.DrawText(" the red border should remain visible:", r.x, r.y); r.y += 15; r.width = r.height = 50; wxRect r2 = r; r2.x += 60; wxRect r3 = r; r3.y += 60; wxRect r4 = r2; r4.y += 60; dc.SetPen(*wxRED_PEN); dc.DrawRectangle(r); r.Deflate(1); dc.GradientFillLinear(r, *wxGREEN, *wxBLACK, wxNORTH); dc.DrawRectangle(r2); r2.Deflate(1); dc.GradientFillLinear(r2, *wxBLACK, *wxGREEN, wxSOUTH); dc.DrawRectangle(r3); r3.Deflate(1); dc.GradientFillLinear(r3, *wxGREEN, *wxBLACK, wxEAST); dc.DrawRectangle(r4); r4.Deflate(1); dc.GradientFillLinear(r4, *wxBLACK, *wxGREEN, wxWEST); #if wxUSE_GRAPHICS_CONTEXT if (m_renderer) { wxGCDC &gdc = (wxGCDC&)dc; wxGraphicsContext *gc = gdc.GetGraphicsContext(); wxGraphicsPath pth; wxGraphicsGradientStops stops; double boxX, boxY, boxWidth, boxHeight; gfr.Offset(0, gfr.height + 10); dc.DrawText("Linear Gradient with Stops", gfr.x, gfr.y); gfr.Offset(0, TEXT_HEIGHT); stops = wxGraphicsGradientStops(*wxRED, *wxBLUE); stops.Add(wxColour(255,255,0), 0.33f); stops.Add(*wxGREEN, 0.67f); gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y, gfr.x + gfr.width, gfr.y + gfr.height, stops)); pth = gc->CreatePath(); pth.MoveToPoint(gfr.x,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height); pth.AddLineToPoint(gfr.x,gfr.y+gfr.height); pth.CloseSubpath(); gc->FillPath(pth); pth.GetBox(&boxX, &boxY, &boxWidth, &boxHeight); dc.CalcBoundingBox(wxRound(boxX), wxRound(boxY)); dc.CalcBoundingBox(wxRound(boxX+boxWidth), wxRound(boxY+boxHeight)); wxGraphicsGradientStops simpleStops(*wxRED, *wxBLUE); gfr.Offset(0, gfr.height + 10); dc.DrawText("Radial Gradient from Red to Blue without intermediary Stops", gfr.x, gfr.y); gfr.Offset(0, TEXT_HEIGHT); gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.width / 2, simpleStops)); pth = gc->CreatePath(); pth.MoveToPoint(gfr.x,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height); pth.AddLineToPoint(gfr.x,gfr.y+gfr.height); pth.CloseSubpath(); gc->FillPath(pth); pth.GetBox(&boxX, &boxY, &boxWidth, &boxHeight); dc.CalcBoundingBox(wxRound(boxX), wxRound(boxY)); dc.CalcBoundingBox(wxRound(boxX+boxWidth), wxRound(boxY+boxHeight)); gfr.Offset(0, gfr.height + 10); dc.DrawText("Radial Gradient from Red to Blue with Yellow and Green Stops", gfr.x, gfr.y); gfr.Offset(0, TEXT_HEIGHT); gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.width / 2, stops)); pth = gc->CreatePath(); pth.MoveToPoint(gfr.x,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height); pth.AddLineToPoint(gfr.x,gfr.y+gfr.height); pth.CloseSubpath(); gc->FillPath(pth); pth.GetBox(&boxX, &boxY, &boxWidth, &boxHeight); dc.CalcBoundingBox(wxRound(boxX), wxRound(boxY)); dc.CalcBoundingBox(wxRound(boxX+boxWidth), wxRound(boxY+boxHeight)); gfr.Offset(0, gfr.height + 10); dc.DrawText("Linear Gradient with Stops and Gaps", gfr.x, gfr.y); gfr.Offset(0, TEXT_HEIGHT); stops = wxGraphicsGradientStops(*wxRED, *wxBLUE); stops.Add(wxColour(255,255,0), 0.33f); stops.Add(wxTransparentColour, 0.33f); stops.Add(wxTransparentColour, 0.67f); stops.Add(*wxGREEN, 0.67f); gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y + gfr.height, gfr.x + gfr.width, gfr.y, stops)); pth = gc->CreatePath(); pth.MoveToPoint(gfr.x,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height); pth.AddLineToPoint(gfr.x,gfr.y+gfr.height); pth.CloseSubpath(); gc->FillPath(pth); pth.GetBox(&boxX, &boxY, &boxWidth, &boxHeight); dc.CalcBoundingBox(wxRound(boxX), wxRound(boxY)); dc.CalcBoundingBox(wxRound(boxX+boxWidth), wxRound(boxY+boxHeight)); gfr.Offset(0, gfr.height + 10); dc.DrawText("Radial Gradient with Stops and Gaps", gfr.x, gfr.y); gfr.Offset(0, TEXT_HEIGHT); gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.width / 2, stops)); pth = gc->CreatePath(); pth.MoveToPoint(gfr.x,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height); pth.AddLineToPoint(gfr.x,gfr.y+gfr.height); pth.CloseSubpath(); gc->FillPath(pth); pth.GetBox(&boxX, &boxY, &boxWidth, &boxHeight); dc.CalcBoundingBox(wxRound(boxX), wxRound(boxY)); dc.CalcBoundingBox(wxRound(boxX+boxWidth), wxRound(boxY+boxHeight)); gfr.Offset(0, gfr.height + 10); dc.DrawText("Gradients with Stops and Transparency", gfr.x, gfr.y); gfr.Offset(0, TEXT_HEIGHT); stops = wxGraphicsGradientStops(*wxRED, wxTransparentColour); stops.Add(*wxRED, 0.33f); stops.Add(wxTransparentColour, 0.33f); stops.Add(wxTransparentColour, 0.67f); stops.Add(*wxBLUE, 0.67f); stops.Add(*wxBLUE, 1.0f); pth = gc->CreatePath(); pth.MoveToPoint(gfr.x,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y); pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height); pth.AddLineToPoint(gfr.x,gfr.y+gfr.height); pth.CloseSubpath(); gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.x + gfr.width / 2, gfr.y + gfr.height / 2, gfr.width / 2, stops)); gc->FillPath(pth); stops = wxGraphicsGradientStops(wxColour(255,0,0, 128), wxColour(0,0,255, 128)); stops.Add(wxColour(255,255,0,128), 0.33f); stops.Add(wxColour(0,255,0,128), 0.67f); gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y, gfr.x + gfr.width, gfr.y, stops)); gc->FillPath(pth); pth.GetBox(&boxX, &boxY, &boxWidth, &boxHeight); dc.CalcBoundingBox(wxRound(boxX), wxRound(boxY)); dc.CalcBoundingBox(wxRound(boxX+boxWidth), wxRound(boxY+boxHeight)); gfr.Offset(0, gfr.height + 10); dc.DrawText("Stroked path with a gradient pen", gfr.x, gfr.y); gfr.Offset(0, TEXT_HEIGHT); pth = gc->CreatePath(); pth.MoveToPoint(gfr.x + gfr.width/2, gfr.y); pth.AddLineToPoint(gfr.x + gfr.width, gfr.y + gfr.height/2); pth.AddLineToPoint(gfr.x + gfr.width/2, gfr.y + gfr.height); pth.AddLineToPoint(gfr.x, gfr.y + gfr.height/2); pth.CloseSubpath(); stops = wxGraphicsGradientStops(*wxRED, *wxBLUE); stops.Add(wxColour(255,255,0), 0.33f); stops.Add(*wxGREEN, 0.67f); wxGraphicsPen pen = gc->CreatePen( wxGraphicsPenInfo(wxColour(0,0,0)).Width(6).Join(wxJOIN_BEVEL).LinearGradient( gfr.x + gfr.width/2, gfr.y, gfr.x + gfr.width/2, gfr.y + gfr.height, stops)); gc->SetPen(pen); gc->StrokePath(pth); } #endif // wxUSE_GRAPHICS_CONTEXT } void MyCanvas::DrawSystemColours(wxDC& dc) { wxFont mono(wxFontInfo().Family(wxFONTFAMILY_TELETYPE)); wxSize textSize; { wxDCFontChanger setMono(dc, mono); textSize = dc.GetTextExtent("#01234567"); } int lineHeight = textSize.GetHeight(); wxRect r(textSize.GetWidth() + 10, 10, 100, lineHeight); wxString title = "System colours"; const wxSystemAppearance appearance = wxSystemSettings::GetAppearance(); const wxString appearanceName = appearance.GetName(); if ( !appearanceName.empty() ) title += wxString::Format(" for \"%s\"", appearanceName); if ( appearance.IsDark() ) title += " (using dark system theme)"; dc.DrawText(title, 10, r.y); r.y += 2*lineHeight; dc.DrawText(wxString::Format("Window background is %s", appearance.IsUsingDarkBackground() ? "dark" : "light"), 10, r.y); r.y += 3*lineHeight; dc.SetPen(*wxTRANSPARENT_PEN); static const struct { wxSystemColour index; const char* name; } sysColours[] = { { wxSYS_COLOUR_3DDKSHADOW, "wxSYS_COLOUR_3DDKSHADOW" }, { wxSYS_COLOUR_3DLIGHT, "wxSYS_COLOUR_3DLIGHT" }, { wxSYS_COLOUR_ACTIVEBORDER, "wxSYS_COLOUR_ACTIVEBORDER" }, { wxSYS_COLOUR_ACTIVECAPTION, "wxSYS_COLOUR_ACTIVECAPTION" }, { wxSYS_COLOUR_APPWORKSPACE, "wxSYS_COLOUR_APPWORKSPACE" }, { wxSYS_COLOUR_BTNFACE, "wxSYS_COLOUR_BTNFACE" }, { wxSYS_COLOUR_BTNHIGHLIGHT, "wxSYS_COLOUR_BTNHIGHLIGHT" }, { wxSYS_COLOUR_BTNSHADOW, "wxSYS_COLOUR_BTNSHADOW" }, { wxSYS_COLOUR_BTNTEXT, "wxSYS_COLOUR_BTNTEXT" }, { wxSYS_COLOUR_CAPTIONTEXT, "wxSYS_COLOUR_CAPTIONTEXT" }, { wxSYS_COLOUR_DESKTOP, "wxSYS_COLOUR_DESKTOP" }, { wxSYS_COLOUR_GRADIENTACTIVECAPTION, "wxSYS_COLOUR_GRADIENTACTIVECAPTION" }, { wxSYS_COLOUR_GRADIENTINACTIVECAPTION, "wxSYS_COLOUR_GRADIENTINACTIVECAPTION" }, { wxSYS_COLOUR_GRAYTEXT, "wxSYS_COLOUR_GRAYTEXT" }, { wxSYS_COLOUR_HIGHLIGHTTEXT, "wxSYS_COLOUR_HIGHLIGHTTEXT" }, { wxSYS_COLOUR_HIGHLIGHT, "wxSYS_COLOUR_HIGHLIGHT" }, { wxSYS_COLOUR_HOTLIGHT, "wxSYS_COLOUR_HOTLIGHT" }, { wxSYS_COLOUR_INACTIVEBORDER, "wxSYS_COLOUR_INACTIVEBORDER" }, { wxSYS_COLOUR_INACTIVECAPTIONTEXT, "wxSYS_COLOUR_INACTIVECAPTIONTEXT" }, { wxSYS_COLOUR_INACTIVECAPTION, "wxSYS_COLOUR_INACTIVECAPTION" }, { wxSYS_COLOUR_INFOBK, "wxSYS_COLOUR_INFOBK" }, { wxSYS_COLOUR_INFOTEXT, "wxSYS_COLOUR_INFOTEXT" }, { wxSYS_COLOUR_LISTBOXHIGHLIGHTTEXT, "wxSYS_COLOUR_LISTBOXHIGHLIGHTTEXT" }, { wxSYS_COLOUR_LISTBOXTEXT, "wxSYS_COLOUR_LISTBOXTEXT" }, { wxSYS_COLOUR_LISTBOX, "wxSYS_COLOUR_LISTBOX" }, { wxSYS_COLOUR_MENUBAR, "wxSYS_COLOUR_MENUBAR" }, { wxSYS_COLOUR_MENUHILIGHT, "wxSYS_COLOUR_MENUHILIGHT" }, { wxSYS_COLOUR_MENUTEXT, "wxSYS_COLOUR_MENUTEXT" }, { wxSYS_COLOUR_MENU, "wxSYS_COLOUR_MENU" }, { wxSYS_COLOUR_SCROLLBAR, "wxSYS_COLOUR_SCROLLBAR" }, { wxSYS_COLOUR_WINDOWFRAME, "wxSYS_COLOUR_WINDOWFRAME" }, { wxSYS_COLOUR_WINDOWTEXT, "wxSYS_COLOUR_WINDOWTEXT" }, { wxSYS_COLOUR_WINDOW, "wxSYS_COLOUR_WINDOW" } }; for (int i = 0; i < wxSYS_COLOUR_MAX; i++) { wxString colourName(sysColours[i].name); wxColour c(wxSystemSettings::GetColour(sysColours[i].index)); { wxDCFontChanger setMono(dc, mono); dc.DrawText(c.GetAsString(wxC2S_HTML_SYNTAX), 10, r.y); } dc.SetBrush(wxBrush(c)); dc.DrawRectangle(r); dc.DrawText(colourName, r.GetRight() + 10, r.y); r.y += lineHeight; } } 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 !defined(__WXMOTIF__) if ( !firstTime ) region.Offset(10, 10); #endif dc.SetDeviceClippingRegion(region); dc.SetBrush( *wxGREY_BRUSH ); dc.DrawRectangle( x, y, 310, 310 ); if (m_smile_bmp.IsOk()) { 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::GetDrawingSize(int* width, int* height) const { if ( width ) *width = m_sizeX; if ( height ) *height = m_sizeY; } void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) { if ( m_useBuffer ) { wxBufferedPaintDC bpdc(this); Draw(bpdc); } else { wxPaintDC pdc(this); Draw(pdc); } } void MyCanvas::Draw(wxDC& pdc) { #if wxUSE_GRAPHICS_CONTEXT wxGCDC gdc; if ( m_renderer ) { wxGraphicsContext* context; if ( wxPaintDC *paintdc = wxDynamicCast(&pdc, wxPaintDC) ) { context = m_renderer->CreateContext(*paintdc); } else if ( wxMemoryDC *memdc = wxDynamicCast(&pdc, wxMemoryDC) ) { context = m_renderer->CreateContext(*memdc); } #if wxUSE_METAFILE && defined(wxMETAFILE_IS_ENH) else if ( wxMetafileDC *metadc = wxDynamicCast(&pdc, wxMetafileDC) ) { context = m_renderer->CreateContext(*metadc); } #endif else { wxFAIL_MSG( "Unknown wxDC kind" ); return; } context->SetAntialiasMode(m_useAntiAliasing ? wxANTIALIAS_DEFAULT : wxANTIALIAS_NONE); gdc.SetBackground(GetBackgroundColour()); gdc.SetGraphicsContext(context); } wxDC &dc = m_renderer ? static_cast(gdc) : pdc; #else wxDC &dc = pdc ; #endif // Adjust scrolled contents for screen drawing operations only. if ( wxDynamicCast(&pdc, wxBufferedPaintDC) || wxDynamicCast(&pdc, wxPaintDC) ) { PrepareDC(dc); } m_owner->PrepareDC(dc); dc.SetBackgroundMode( m_owner->m_backgroundMode ); if ( m_owner->m_backgroundBrush.IsOk() ) dc.SetBackground( m_owner->m_backgroundBrush ); if ( m_owner->m_colourForeground.IsOk() ) dc.SetTextForeground( m_owner->m_colourForeground ); if ( m_owner->m_colourBackground.IsOk() ) dc.SetTextBackground( m_owner->m_colourBackground ); if ( m_owner->m_textureBackground) { if ( ! m_owner->m_backgroundBrush.IsOk() ) { dc.SetBackground(wxBrush(wxColour(0, 128, 0))); } } if ( m_clip ) dc.SetClippingRegion(100, 100, 100, 100); 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 File_ShowDefault: DrawDefault(dc); break; case File_ShowCircles: DrawCircles(dc); break; case File_ShowSplines: DrawSplines(dc); break; case File_ShowRegions: DrawRegions(dc); break; case File_ShowText: DrawText(dc); break; case File_ShowLines: DrawTestLines( 0, 100, 0, dc ); DrawTestLines( 0, 320, 1, dc ); DrawTestLines( 0, 540, 2, dc ); DrawTestLines( 0, 760, 6, dc ); DrawCrossHair( 0, 0, 400, 90, dc); break; case File_ShowBrushes: DrawTestBrushes(dc); break; case File_ShowPolygons: DrawTestPoly(dc); break; case File_ShowMask: DrawImages(dc, Draw_Normal); break; case File_ShowMaskStretch: DrawImages(dc, Draw_Stretch); break; case File_ShowOps: DrawWithLogicalOps(dc); break; #if wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT case File_ShowAlpha: DrawAlpha(dc); break; #endif // wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT #if wxUSE_GRAPHICS_CONTEXT case File_ShowGraphics: DrawGraphics(gdc.GetGraphicsContext()); break; #endif case File_ShowGradients: DrawGradients(dc); break; case File_ShowSystemColours: DrawSystemColours(dc); break; default: break; } // For drawing with raw wxGraphicsContext // there is no bounding box to obtain. if ( m_showBBox #if wxUSE_GRAPHICS_CONTEXT && m_show != File_ShowGraphics #endif // wxUSE_GRAPHICS_CONTEXT ) { dc.SetPen(wxPen(wxColor(0, 128, 0), 1, wxPENSTYLE_DOT)); dc.SetBrush(*wxTRANSPARENT_BRUSH); dc.DrawRectangle(dc.MinX(), dc.MinY(), dc.MaxX()-dc.MinX()+1, dc.MaxY()-dc.MinY()+1); } // Adjust drawing area dimensions only if screen drawing is invoked. if ( wxDynamicCast(&pdc, wxBufferedPaintDC) || wxDynamicCast(&pdc, wxPaintDC) ) { wxCoord x0, y0; dc.GetDeviceOrigin(&x0, &y0); m_sizeX = dc.LogicalToDeviceX(dc.MaxX()) - x0 + 1; m_sizeY = dc.LogicalToDeviceY(dc.MaxY()) - y0 + 1; } } void MyCanvas::OnMouseMove(wxMouseEvent &event) { #if wxUSE_STATUSBAR { 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 ); } if ( m_rubberBand ) { int x,y, xx, yy ; event.GetPosition(&x,&y); CalcUnscrolledPosition( x, y, &xx, &yy ); m_currentpoint = wxPoint( xx , yy ) ; wxRect newrect ( m_anchorpoint , m_currentpoint ) ; wxClientDC dc( this ) ; PrepareDC( dc ) ; wxDCOverlay overlaydc( m_overlay, &dc ); overlaydc.Clear(); #ifdef __WXMAC__ dc.SetPen( *wxGREY_PEN ); dc.SetBrush( wxColour( 192,192,192,64 ) ); #else dc.SetPen( wxPen( *wxLIGHT_GREY, 2 ) ); dc.SetBrush( *wxTRANSPARENT_BRUSH ); #endif dc.DrawRectangle( newrect ); } #else wxUnusedVar(event); #endif // wxUSE_STATUSBAR } void MyCanvas::OnMouseDown(wxMouseEvent &event) { int x,y,xx,yy ; event.GetPosition(&x,&y); CalcUnscrolledPosition( x, y, &xx, &yy ); m_anchorpoint = wxPoint( xx , yy ) ; m_currentpoint = m_anchorpoint ; m_rubberBand = true ; CaptureMouse() ; } void MyCanvas::OnMouseUp(wxMouseEvent &event) { if ( m_rubberBand ) { ReleaseMouse(); { wxClientDC dc( this ); PrepareDC( dc ); wxDCOverlay overlaydc( m_overlay, &dc ); overlaydc.Clear(); } m_overlay.Reset(); m_rubberBand = false; wxPoint endpoint = CalcUnscrolledPosition(event.GetPosition()); // Don't pop up the message box if nothing was actually selected. if ( endpoint != m_anchorpoint ) { wxLogMessage("Selected rectangle from (%d, %d) to (%d, %d)", m_anchorpoint.x, m_anchorpoint.y, endpoint.x, endpoint.y); } } } #if wxUSE_GRAPHICS_CONTEXT void MyCanvas::UseGraphicRenderer(wxGraphicsRenderer* renderer) { m_renderer = renderer; if (renderer) { int major, minor, micro; renderer->GetVersion(&major, &minor, µ); wxString str = wxString::Format("Graphics renderer: %s %i.%i.%i", renderer->GetName(), major, minor, micro); m_owner->SetStatusText(str, 1); } else { m_owner->SetStatusText(wxEmptyString, 1); } Refresh(); } #endif // wxUSE_GRAPHICS_CONTEXT #if wxUSE_DC_TRANSFORM_MATRIX #include "wx/valnum.h" class TransformDataDialog : public wxDialog { public: TransformDataDialog(wxWindow* parent, wxDouble dx, wxDouble dy, wxDouble scx, wxDouble scy, wxDouble rotAngle) : wxDialog(parent, wxID_ANY, "Affine transformation parameters") , m_dx(dx) , m_dy(dy) , m_scx(scx) , m_scy(scy) , m_rotAngle(rotAngle) { wxBoxSizer* sizer = new wxBoxSizer(wxVERTICAL); const int border = wxSizerFlags::GetDefaultBorder(); wxFlexGridSizer* paramSizer = new wxFlexGridSizer(2, wxSize(border, border)); paramSizer->Add(new wxStaticText(this, wxID_ANY, "Translation X:"), wxSizerFlags().CentreVertical()); wxFloatingPointValidator val_dx(1, &m_dx, wxNUM_VAL_NO_TRAILING_ZEROES); paramSizer->Add(new wxTextCtrl(this, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, 0, val_dx), wxSizerFlags().CentreVertical()); paramSizer->Add(new wxStaticText(this, wxID_ANY, "Translation Y:"), wxSizerFlags().CentreVertical()); wxFloatingPointValidator val_dy(1, &m_dy, wxNUM_VAL_NO_TRAILING_ZEROES); paramSizer->Add(new wxTextCtrl(this, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, 0, val_dy), wxSizerFlags().CentreVertical()); paramSizer->Add(new wxStaticText(this, wxID_ANY, "Scale X (0.2 - 5):"), wxSizerFlags().CentreVertical()); wxFloatingPointValidator val_scx(2, &m_scx, wxNUM_VAL_NO_TRAILING_ZEROES); paramSizer->Add(new wxTextCtrl(this, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, 0, val_scx), wxSizerFlags().CentreVertical()); paramSizer->Add(new wxStaticText(this, wxID_ANY, "Scale Y (0.2 - 5):"), wxSizerFlags().CentreVertical()); wxFloatingPointValidator val_scy(2, &m_scy, wxNUM_VAL_NO_TRAILING_ZEROES); paramSizer->Add(new wxTextCtrl(this, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, 0, val_scy), wxSizerFlags().CentreVertical()); paramSizer->Add(new wxStaticText(this, wxID_ANY, "Rotation angle (deg):"), wxSizerFlags().CentreVertical()); wxFloatingPointValidator val_rot(1, &m_rotAngle, wxNUM_VAL_NO_TRAILING_ZEROES); paramSizer->Add(new wxTextCtrl(this, wxID_ANY, "", wxDefaultPosition, wxDefaultSize, 0, val_rot), wxSizerFlags().CentreVertical()); sizer->Add(paramSizer, wxSizerFlags().DoubleBorder()); wxSizer *btnSizer = CreateSeparatedButtonSizer(wxOK | wxCANCEL); sizer->Add(btnSizer, wxSizerFlags().Expand().Border()); SetSizerAndFit(sizer); } virtual bool TransferDataFromWindow() wxOVERRIDE { if ( !wxDialog::TransferDataFromWindow() ) return false; if ( m_scx < 0.2 || m_scx > 5.0 || m_scy < 0.2 || m_scy > 5.0 ) { if ( !wxValidator::IsSilent() ) wxBell(); return false; } return true; } void GetTransformationData(wxDouble* dx, wxDouble* dy, wxDouble* scx, wxDouble* scy, wxDouble* rotAngle) const { if ( dx ) *dx = m_dx; if ( dy ) *dy = m_dy; if ( scx ) *scx = m_scx; if ( scy ) *scy = m_scy; if ( rotAngle ) *rotAngle = m_rotAngle; } private: wxDouble m_dx; wxDouble m_dy; wxDouble m_scx; wxDouble m_scy; wxDouble m_rotAngle; }; #endif // wxUSE_DC_TRANSFORM_MATRIX // ---------------------------------------------------------------------------- // MyFrame // ---------------------------------------------------------------------------- // the event tables connect the wxWidgets 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. wxBEGIN_EVENT_TABLE(MyFrame, wxFrame) EVT_MENU (File_Quit, MyFrame::OnQuit) EVT_MENU (File_About, MyFrame::OnAbout) EVT_MENU (File_Clip, MyFrame::OnClip) #if wxUSE_GRAPHICS_CONTEXT EVT_MENU (File_GC_Default, MyFrame::OnGraphicContextDefault) EVT_MENU (File_DC, MyFrame::OnGraphicContextNone) #if wxUSE_CAIRO EVT_MENU (File_GC_Cairo, MyFrame::OnGraphicContextCairo) #endif // wxUSE_CAIRO #ifdef __WXMSW__ #if wxUSE_GRAPHICS_GDIPLUS EVT_MENU (File_GC_GDIPlus, MyFrame::OnGraphicContextGDIPlus) #endif #if wxUSE_GRAPHICS_DIRECT2D EVT_MENU (File_GC_Direct2D, MyFrame::OnGraphicContextDirect2D) #endif #endif // __WXMSW__ EVT_MENU (File_AntiAliasing, MyFrame::OnAntiAliasing) EVT_UPDATE_UI (File_AntiAliasing, MyFrame::OnAntiAliasingUpdateUI) #endif // wxUSE_GRAPHICS_CONTEXT EVT_MENU (File_Buffer, MyFrame::OnBuffer) EVT_MENU (File_Copy, MyFrame::OnCopy) EVT_MENU (File_Save, MyFrame::OnSave) EVT_MENU (File_BBox, MyFrame::OnBoundingBox) EVT_UPDATE_UI (File_BBox, MyFrame::OnBoundingBoxUpdateUI) EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow) EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption) wxEND_EVENT_TABLE() // frame constructor MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size) { // set the frame icon SetIcon(wxICON(sample)); wxMenu *menuScreen = new wxMenu; menuScreen->Append(File_ShowDefault, "&Default screen\tF1"); menuScreen->Append(File_ShowText, "&Text screen\tF2"); menuScreen->Append(File_ShowLines, "&Lines screen\tF3"); menuScreen->Append(File_ShowBrushes, "&Brushes screen\tF4"); menuScreen->Append(File_ShowPolygons, "&Polygons screen\tF5"); menuScreen->Append(File_ShowMask, "&Mask screen\tF6"); menuScreen->Append(File_ShowMaskStretch, "1/&2 scaled mask\tShift-F6"); menuScreen->Append(File_ShowOps, "&Raster operations screen\tF7"); menuScreen->Append(File_ShowRegions, "Re&gions screen\tF8"); menuScreen->Append(File_ShowCircles, "&Circles screen\tF9"); #if wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT menuScreen->Append(File_ShowAlpha, "&Alpha screen\tF10"); #endif // wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT menuScreen->Append(File_ShowSplines, "Spl&ines screen\tF11"); menuScreen->Append(File_ShowGradients, "&Gradients screen\tF12"); #if wxUSE_GRAPHICS_CONTEXT menuScreen->Append(File_ShowGraphics, "&Graphics screen"); #endif menuScreen->Append(File_ShowSystemColours, "System &colours"); wxMenu *menuFile = new wxMenu; #if wxUSE_GRAPHICS_CONTEXT // Number the different renderer choices consecutively, starting from 0. int accel = 0; m_menuItemUseDC = menuFile->AppendRadioItem ( File_DC, wxString::Format("Use wx&DC\t%d", accel++) ); menuFile->AppendRadioItem ( File_GC_Default, wxString::Format("Use default wx&GraphicContext\t%d", accel++) ); #if wxUSE_CAIRO menuFile->AppendRadioItem ( File_GC_Cairo, wxString::Format("Use &Cairo\t%d", accel++) ); #endif // wxUSE_CAIRO #ifdef __WXMSW__ #if wxUSE_GRAPHICS_GDIPLUS menuFile->AppendRadioItem ( File_GC_GDIPlus, wxString::Format("Use &GDI+\t%d", accel++) ); #endif #if wxUSE_GRAPHICS_DIRECT2D menuFile->AppendRadioItem ( File_GC_Direct2D, wxString::Format("Use &Direct2D\t%d", accel++) ); #endif #endif // __WXMSW__ #endif // wxUSE_GRAPHICS_CONTEXT menuFile->AppendSeparator(); menuFile->AppendCheckItem(File_BBox, "Show bounding box\tCtrl-E", "Show extents used in drawing operations"); menuFile->AppendCheckItem(File_Clip, "&Clip\tCtrl-C", "Clip/unclip drawing"); menuFile->AppendCheckItem(File_Buffer, "&Use wx&BufferedPaintDC\tCtrl-Z", "Buffer painting"); #if wxUSE_GRAPHICS_CONTEXT menuFile->AppendCheckItem(File_AntiAliasing, "&Anti-Aliasing in wxGraphicContext\tCtrl-Shift-A", "Enable Anti-Aliasing in wxGraphicContext") ->Check(); #endif menuFile->AppendSeparator(); #if wxUSE_METAFILE && defined(wxMETAFILE_IS_ENH) menuFile->Append(File_Copy, "Copy to clipboard"); #endif menuFile->Append(File_Save, "&Save...\tCtrl-S", "Save drawing to file"); menuFile->AppendSeparator(); 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" ); menuMapMode->Append( MapMode_Lometric, "&LOMETRIC map mode" ); menuMapMode->Append( MapMode_Twips, "T&WIPS map mode" ); menuMapMode->Append( MapMode_Points, "&POINTS map mode" ); menuMapMode->Append( MapMode_Metric, "&METRIC map mode" ); wxMenu *menuUserScale = new wxMenu; 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" ); wxMenu *menuAxis = new wxMenu; menuAxis->AppendCheckItem( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M" ); menuAxis->AppendCheckItem( AxisMirror_Vertic, "Mirror vertically\tCtrl-N" ); wxMenu *menuLogical = new wxMenu; menuLogical->Append( LogicalOrigin_MoveDown, "Move &down\tCtrl-D" ); 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" ); #if wxUSE_DC_TRANSFORM_MATRIX wxMenu *menuTransformMatrix = new wxMenu; menuTransformMatrix->Append(TransformMatrix_Set, "Set &transformation matrix"); menuTransformMatrix->AppendSeparator(); menuTransformMatrix->Append(TransformMatrix_Reset, "Restore to &normal"); #endif // wxUSE_DC_TRANSFORM_MATRIX wxMenu *menuColour = new wxMenu; #if wxUSE_COLOURDLG menuColour->Append( Colour_TextForeground, "Text &foreground..." ); menuColour->Append( Colour_TextBackground, "Text &background..." ); menuColour->Append( Colour_Background, "Background &colour..." ); #endif // wxUSE_COLOURDLG menuColour->AppendCheckItem( Colour_BackgroundMode, "&Opaque/transparent\tCtrl-B" ); menuColour->AppendCheckItem( Colour_TextureBackgound, "Draw textured back&ground\tCtrl-T" ); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; menuBar->Append(menuFile, "&Drawing"); menuBar->Append(menuScreen, "Scree&n"); menuBar->Append(menuMapMode, "&Mode"); menuBar->Append(menuUserScale, "&Scale"); menuBar->Append(menuAxis, "&Axis"); menuBar->Append(menuLogical, "&Origin"); #if wxUSE_DC_TRANSFORM_MATRIX menuBar->Append(menuTransformMatrix, "&Transformation"); #endif // wxUSE_DC_TRANSFORM_MATRIX menuBar->Append(menuColour, "&Colours"); // ... and attach this menu bar to the frame SetMenuBar(menuBar); #if wxUSE_STATUSBAR CreateStatusBar(2); SetStatusText("Welcome to wxWidgets!"); #endif // wxUSE_STATUSBAR m_mapMode = wxMM_TEXT; m_xUserScale = 1.0; m_yUserScale = 1.0; m_xLogicalOrigin = 0; m_yLogicalOrigin = 0; m_xAxisReversed = m_yAxisReversed = false; #if wxUSE_DC_TRANSFORM_MATRIX m_transform_dx = 0.0; m_transform_dy = 0.0; m_transform_scx = 1.0; m_transform_scy = 1.0; m_transform_rot = 0.0; #endif // wxUSE_DC_TRANSFORM_MATRIX m_backgroundMode = wxBRUSHSTYLE_SOLID; m_colourForeground = *wxBLACK; m_colourBackground = *wxLIGHT_GREY; m_textureBackground = false; m_canvas = new MyCanvas( this ); m_canvas->SetScrollbars( 10, 10, 100, 240 ); } // event handlers void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) { // true is to force the frame to close Close(true); } void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { wxString msg; msg.Printf( "This is the about dialog of the drawing sample.\n" "This sample tests various primitive drawing functions\n" "(without any attempts to prevent flicker).\n" "Copyright (c) Robert Roebling 1999" ); wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this); } void MyFrame::OnClip(wxCommandEvent& event) { m_canvas->Clip(event.IsChecked()); } void MyFrame::OnBuffer(wxCommandEvent& event) { m_canvas->UseBuffer(event.IsChecked()); } void MyFrame::OnCopy(wxCommandEvent& WXUNUSED(event)) { #if wxUSE_METAFILE && defined(wxMETAFILE_IS_ENH) wxMetafileDC dc; if (!dc.IsOk()) return; m_canvas->Draw(dc); wxMetafile *mf = dc.Close(); if (!mf) return; mf->SetClipboard(); delete mf; #endif } void MyFrame::OnSave(wxCommandEvent& WXUNUSED(event)) { wxString wildCard = "Bitmap image (*.bmp)|*.bmp;*.BMP"; #if wxUSE_LIBPNG wildCard.Append("|PNG image (*.png)|*.png;*.PNG"); #endif #if wxUSE_SVG wildCard.Append("|SVG image (*.svg)|*.svg;*.SVG"); #endif #if wxUSE_POSTSCRIPT wildCard.Append("|PostScript file (*.ps)|*.ps;*.PS"); #endif wxFileDialog dlg(this, "Save as bitmap", wxEmptyString, wxEmptyString, wildCard, wxFD_SAVE | wxFD_OVERWRITE_PROMPT); if (dlg.ShowModal() == wxID_OK) { int width, height; m_canvas->GetDrawingSize(&width, &height); wxFileName fn(dlg.GetPath()); wxString ext = fn.GetExt().Lower(); #if wxUSE_SVG if (ext == "svg") { #if wxUSE_GRAPHICS_CONTEXT // Graphics screen can only be drawn using GraphicsContext if (m_canvas->GetPage() == File_ShowGraphics) { wxLogMessage("Graphics screen can not be saved as SVG."); return; } wxGraphicsRenderer* tempRenderer = m_canvas->GetRenderer(); m_canvas->UseGraphicRenderer(NULL); #endif wxSVGFileDC svgdc(dlg.GetPath(), width, height, 72, "Drawing sample"); svgdc.SetBitmapHandler(new wxSVGBitmapEmbedHandler()); m_canvas->Draw(svgdc); #if wxUSE_GRAPHICS_CONTEXT m_canvas->UseGraphicRenderer(tempRenderer); #endif } else #endif #if wxUSE_POSTSCRIPT if ( ext == "ps" ) { #if wxUSE_GRAPHICS_CONTEXT // Graphics screen can only be drawn using wxGraphicsContext if (m_canvas->GetPage() == File_ShowGraphics) { wxLogMessage("Graphics screen can not be saved as PostScript file."); return; } wxGraphicsRenderer* curRenderer = m_canvas->GetRenderer(); m_canvas->UseGraphicRenderer(NULL); #endif // wxUSE_GRAPHICS_CONTEXT wxPrintData printData; printData.SetPrintMode(wxPRINT_MODE_FILE); printData.SetFilename(dlg.GetPath()); printData.SetOrientation(wxPORTRAIT); printData.SetPaperId(wxPAPER_A4); wxPostScriptDC psdc(printData); // Save current scale factor const double curUserScaleX = m_xUserScale; const double curUserScaleY = m_yUserScale; // Change the scale temporarily to fit the drawing into the page. int w, h; psdc.GetSize(&w, &h); double sc = wxMin((double)w / width, (double)h / height); m_xUserScale *= sc; m_yUserScale *= sc; psdc.StartDoc("Drawing sample"); // Define default font. psdc.SetFont( wxFontInfo(10).Family(wxFONTFAMILY_MODERN) ); psdc.StartPage(); m_canvas->Draw(psdc); psdc.EndPage(); psdc.EndDoc(); // Restore original scale facor m_xUserScale = curUserScaleX; m_yUserScale = curUserScaleY; #if wxUSE_GRAPHICS_CONTEXT m_canvas->UseGraphicRenderer(curRenderer); #endif // wxUSE_GRAPHICS_CONTEXT } else #endif // wxUSE_POSTSCRIPT { wxBitmap bmp(width, height); wxMemoryDC mdc(bmp); mdc.SetBackground(*wxWHITE_BRUSH); mdc.Clear(); m_canvas->Draw(mdc); bmp.ConvertToImage().SaveFile(dlg.GetPath()); } } } void MyFrame::OnShow(wxCommandEvent& event) { const int show = event.GetId(); #if wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT // Make sure we do use a graphics context when selecting one of the screens // requiring it. #if wxDRAWING_DC_SUPPORTS_ALPHA // If DC supports drawing with alpha // then GC is necessary only for graphics screen. if ( show == File_ShowGraphics ) #else // wxUSE_GRAPHICS_CONTEXT // DC doesn't support drawing with alpha // so GC is necessary both for alpha and graphics screen. if ( show == File_ShowAlpha || show == File_ShowGraphics ) #endif // wxDRAWING_DC_SUPPORTS_ALPHA, wxUSE_GRAPHICS_CONTEXT { if ( !m_canvas->HasRenderer() ) m_canvas->UseGraphicRenderer(wxGraphicsRenderer::GetDefaultRenderer()); // Disable selecting wxDC, if necessary. m_menuItemUseDC->Enable(!m_canvas->HasRenderer()); } else { m_menuItemUseDC->Enable(true); } #endif // wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT m_canvas->ToShow(show); } void MyFrame::OnOption(wxCommandEvent& event) { switch (event.GetId()) { case MapMode_Text: m_mapMode = wxMM_TEXT; break; case MapMode_Lometric: m_mapMode = wxMM_LOMETRIC; break; case MapMode_Twips: m_mapMode = wxMM_TWIPS; break; case MapMode_Points: m_mapMode = wxMM_POINTS; break; case MapMode_Metric: m_mapMode = wxMM_METRIC; break; case LogicalOrigin_MoveDown: m_yLogicalOrigin += 10; break; case LogicalOrigin_MoveUp: m_yLogicalOrigin -= 10; break; case LogicalOrigin_MoveLeft: m_xLogicalOrigin += 10; break; 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; break; case UserScale_ShrinkHoriz: m_xUserScale /= 1.10; break; case UserScale_StretchVertic: m_yUserScale *= 1.10; break; case UserScale_ShrinkVertic: m_yUserScale /= 1.10; break; case UserScale_Restore: m_xUserScale = m_yUserScale = 1.0; break; case AxisMirror_Vertic: m_yAxisReversed = !m_yAxisReversed; break; case AxisMirror_Horiz: m_xAxisReversed = !m_xAxisReversed; break; #if wxUSE_DC_TRANSFORM_MATRIX case TransformMatrix_Set: { TransformDataDialog dlg(this, m_transform_dx, m_transform_dy, m_transform_scx, m_transform_scy, m_transform_rot); if ( dlg.ShowModal() == wxID_OK ) { dlg.GetTransformationData(&m_transform_dx, &m_transform_dy, &m_transform_scx, &m_transform_scy, &m_transform_rot); } } break; case TransformMatrix_Reset: m_transform_dx = 0.0; m_transform_dy = 0.0; m_transform_scx = 1.0; m_transform_scy = 1.0; m_transform_rot = 0.0; break; #endif // wxUSE_DC_TRANSFORM_MATRIX #if wxUSE_COLOURDLG case Colour_TextForeground: m_colourForeground = SelectColour(); break; case Colour_TextBackground: m_colourBackground = SelectColour(); break; case Colour_Background: { wxColour col = SelectColour(); if ( col.IsOk() ) { m_backgroundBrush.SetColour(col); } } break; #endif // wxUSE_COLOURDLG case Colour_BackgroundMode: m_backgroundMode = m_backgroundMode == wxBRUSHSTYLE_SOLID ? wxBRUSHSTYLE_TRANSPARENT : wxBRUSHSTYLE_SOLID; break; case Colour_TextureBackgound: m_textureBackground = ! m_textureBackground; break; default: // skip Refresh() return; } m_canvas->Refresh(); } void MyFrame::OnBoundingBox(wxCommandEvent& evt) { m_canvas->ShowBoundingBox(evt.IsChecked()); } void MyFrame::OnBoundingBoxUpdateUI(wxUpdateUIEvent& evt) { #if wxUSE_GRAPHICS_CONTEXT evt.Enable(m_canvas->GetPage() != File_ShowGraphics); #else wxUnusedVar(evt); #endif // wxUSE_GRAPHICS_CONTEXT / !wxUSE_GRAPHICS_CONTEXT } void MyFrame::PrepareDC(wxDC& dc) { #if wxUSE_DC_TRANSFORM_MATRIX if ( dc.CanUseTransformMatrix() ) { wxAffineMatrix2D mtx; mtx.Translate(m_transform_dx, m_transform_dy); mtx.Rotate(wxDegToRad(m_transform_rot)); mtx.Scale(m_transform_scx, m_transform_scy); dc.SetTransformMatrix(mtx); } #endif // wxUSE_DC_TRANSFORM_MATRIX dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed ); dc.SetUserScale( m_xUserScale, m_yUserScale ); dc.SetMapMode( m_mapMode ); } #if wxUSE_COLOURDLG wxColour MyFrame::SelectColour() { wxColour col; wxColourData data; wxColourDialog dialog(this, &data); if ( dialog.ShowModal() == wxID_OK ) { col = dialog.GetColourData().GetColour(); } return col; } #endif // wxUSE_COLOURDLG