X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b985763280ef50a537c28ce6e811c9186859453d..3c01c5951189e13b8b4a5d7b288b54d4a57a30f8:/samples/drawing/drawing.cpp?ds=sidebyside diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp index d03f254d8e..9b288944fb 100644 --- a/samples/drawing/drawing.cpp +++ b/samples/drawing/drawing.cpp @@ -1,6 +1,6 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: drawing.cpp -// Purpose: Minimal wxWindows sample +// Name: samples/drawing/drawing.cpp +// Purpose: shows and tests wxDC features // Author: Robert Roebling // Modified by: // Created: 04/01/98 @@ -16,10 +16,6 @@ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "minimal.cpp" - #pragma interface "minimal.cpp" -#endif // For compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" @@ -29,19 +25,42 @@ #endif // for all others, include the necessary headers (this file is usually all you -// need because it includes almost all "standard" wxWindows headers +// 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/dcgraph.h" +#include "wx/overlay.h" +#include "wx/graphics.h" +#include "wx/filename.h" + +#define TEST_CAIRO_EVERYWHERE 0 + // ---------------------------------------------------------------------------- -// ressources +// resources // ---------------------------------------------------------------------------- + // the application icon -#if defined(__WXGTK__) || defined(__WXMOTIF__) +#if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__) || defined(__WXX11__) #include "mondrian.xpm" #endif +// ---------------------------------------------------------------------------- +// 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 // ---------------------------------------------------------------------------- @@ -57,8 +76,17 @@ 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; + // Define a new frame type: this is going to be our main frame class MyFrame : public wxFrame { @@ -69,18 +97,96 @@ public: // event handlers (these functions should _not_ be virtual) void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); - void OnPaint(wxPaintEvent &event); + void OnClip(wxCommandEvent& event); +#if wxUSE_GRAPHICS_CONTEXT + void OnGraphicContext(wxCommandEvent& event); +#endif + void OnShow(wxCommandEvent &event); void OnOption(wxCommandEvent &event); + +#if wxUSE_COLOURDLG + wxColour SelectColour(); +#endif // wxUSE_COLOURDLG + void PrepareDC(wxDC& dc); + + 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; + wxColour m_colourForeground, // these are _text_ colours + m_colourBackground; + wxBrush m_backgroundBrush; + MyCanvas *m_canvas; + +private: + // any class wishing to process wxWidgets events must use this macro + DECLARE_EVENT_TABLE() +}; + +// 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 m_mapMode; - double m_xUserScale; - double m_yUserScale; - int m_xLogicalOrigin; - int m_yLogicalOrigin; + // set or remove the clipping region + void Clip(bool clip) { m_clip = clip; Refresh(); } +#if wxUSE_GRAPHICS_CONTEXT + void UseGraphicContext(bool use) { m_useContext = use; Refresh(); } +#endif + +protected: + enum DrawMode + { + Draw_Normal, + Draw_Stretch + }; + + 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, DrawMode mode); + void DrawWithLogicalOps(wxDC& dc); +#if wxUSE_GRAPHICS_CONTEXT + void DrawAlpha(wxDC& dc); + 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 DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime); private: - // any class wishing to process wxWindows events must use this macro + 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 + bool m_useContext ; +#endif + DECLARE_EVENT_TABLE() }; @@ -92,66 +198,74 @@ private: enum { // menu items - Minimal_Quit = 1, - Minimal_About, - - MapMode_Text, + 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 wxUSE_GRAPHICS_CONTEXT + File_ShowAlpha, + File_ShowGraphics, +#endif + File_ShowGradients, + MenuShow_Last = File_ShowGradients, + + File_Clip, +#if wxUSE_GRAPHICS_CONTEXT + File_GraphicContext, +#endif + + 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_COLOURDLG + Colour_TextForeground, + Colour_TextBackground, + Colour_Background, +#endif // wxUSE_COLOURDLG + Colour_BackgroundMode, + Colour_TextureBackgound, + + MenuOption_Last = Colour_TextureBackgound }; // ---------------------------------------------------------------------------- -// event tables and other macros for wxWindows +// event tables and other macros for wxWidgets // ---------------------------------------------------------------------------- -// the event tables connect the wxWindows events with the functions (event -// handlers) which process them. It can be also done at run-time, but for the -// simple menu events like this the static method is much simpler. -BEGIN_EVENT_TABLE(MyFrame, wxFrame) - EVT_MOTION (MyFrame::OnMouseMove) - EVT_PAINT (MyFrame::OnPaint) - - EVT_MENU(Minimal_Quit, MyFrame::OnQuit) - EVT_MENU(Minimal_About, MyFrame::OnAbout) - - EVT_MENU(MapMode_Text, MyFrame::OnOption) - EVT_MENU(MapMode_Lometric, MyFrame::OnOption) - EVT_MENU(MapMode_Twips, MyFrame::OnOption) - EVT_MENU(MapMode_Points, MyFrame::OnOption) - EVT_MENU(MapMode_Metric, MyFrame::OnOption) - - EVT_MENU(UserScale_StretchHoriz, MyFrame::OnOption) - EVT_MENU(UserScale_ShrinkHoriz, MyFrame::OnOption) - EVT_MENU(UserScale_StretchVertic, MyFrame::OnOption) - EVT_MENU(UserScale_ShrinkVertic, MyFrame::OnOption) - - EVT_MENU(AxisMirror_Horiz, MyFrame::OnOption) - EVT_MENU(AxisMirror_Vertic, MyFrame::OnOption) - - EVT_MENU(LogicalOrigin_MoveDown, MyFrame::OnOption) - EVT_MENU(LogicalOrigin_MoveUp, MyFrame::OnOption) - EVT_MENU(LogicalOrigin_MoveLeft, MyFrame::OnOption) - EVT_MENU(LogicalOrigin_MoveRight, MyFrame::OnOption) -END_EVENT_TABLE() - -// Create a new application object: this macro will allow wxWindows to create +// 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 @@ -166,178 +280,1549 @@ 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; + // 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(_T(".")); + pathList.Add(_T("..")); + pathList.Add(_T("../..")); + + wxString path = pathList.FindValidPath(_T("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(_T("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(_T("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(_T("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; + // Create the main application window - MyFrame *frame = new MyFrame("Drawing sample", - wxPoint(50, 50), wxSize(450, 340)); + MyFrame *frame = new MyFrame(_T("Drawing sample"), + wxPoint(50, 50), wxSize(550, 340)); // Show it and tell the application that it's our main window - // @@@ what does it do exactly, in fact? is it necessary here? - frame->Show(TRUE); + 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. - return TRUE; + 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.")); + + // still continue, the sample can be used without images too if they're + // missing for whatever reason + } + + 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; } // ---------------------------------------------------------------------------- -// main frame +// MyCanvas // ---------------------------------------------------------------------------- +// the event tables connect the wxWidgets events with the functions (event +// handlers) which process them. +BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) + EVT_PAINT (MyCanvas::OnPaint) + EVT_MOTION (MyCanvas::OnMouseMove) + EVT_LEFT_DOWN (MyCanvas::OnMouseDown) + EVT_LEFT_UP (MyCanvas::OnMouseUp) +END_EVENT_TABLE() + +#include "smile.xpm" + +MyCanvas::MyCanvas(MyFrame *parent) + : wxScrolledWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, + wxHSCROLL | wxVSCROLL | wxNO_FULL_REPAINT_ON_RESIZE) +{ + 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_useContext = false; +#endif +} + +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(_T("Solid green"), x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*wxRED, wxCROSSDIAG_HATCH)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText(_T("Hatched red"), x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*gs_bmpMask)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText(_T("Stipple mono"), x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*gs_bmpNoMask)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText(_T("Stipple colour"), x + 10, y + 10); +} + +void MyCanvas::DrawTestPoly(wxDC& dc) +{ + 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(_T("You should see two (irregular) stars below, the left one ") + _T("hatched"), 10, 10); + dc.DrawText(_T("except for the central region and the right ") + _T("one entirely hatched"), 10, 30); + dc.DrawText(_T("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); + + 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( wxT("black"), width, wxSOLID) ); + dc.SetBrush( *wxRED_BRUSH ); + dc.DrawText(wxString::Format(wxT("Testing lines of width %d"), width), x + 10, y - 10); + dc.DrawRectangle( x+10, y+10, 100, 190 ); + + dc.DrawText(_T("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(_T("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(_T("User dash"), x + 150, y + 140); + wxPen ud( wxT("black"), width, wxUSER_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 ); +} + +void MyCanvas::DrawDefault(wxDC& dc) +{ + // mark the origin + dc.DrawCircle(0, 0, 10); + +#if !defined(wxMAC_USE_CORE_GRAPHICS) || !wxMAC_USE_CORE_GRAPHICS + // GetPixel and FloodFill not supported by Mac OS X CoreGraphics + // (FloodFill uses Blit from a non-wxMemoryDC) + //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); +#endif + + dc.DrawCheckMark(5, 80, 15, 15); + dc.DrawCheckMark(25, 80, 30, 30); + dc.DrawCheckMark(60, 80, 60, 60); + + // this is the test for "blitting bitmap into DC damages selected brush" bug + wxCoord rectSize = m_std_icon.GetWidth() + 10; + wxCoord x = 100; + dc.SetPen(*wxTRANSPARENT_PEN); + dc.SetBrush( *wxGREEN_BRUSH ); + dc.DrawRectangle(x, 10, rectSize, rectSize); + dc.DrawBitmap(m_std_icon, x + 5, 15, true); + x += rectSize + 10; + dc.DrawRectangle(x, 10, rectSize, rectSize); + dc.DrawIcon(m_std_icon, x + 5, 15); + x += rectSize + 10; + dc.DrawRectangle(x, 10, rectSize, rectSize); + + // test for "transparent" bitmap drawing (it intersects with the last + // rectangle above) + //dc.SetBrush( *wxTRANSPARENT_BRUSH ); + + if (m_smile_bmp.Ok()) + dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, true); + + dc.SetBrush( *wxBLACK_BRUSH ); + dc.DrawRectangle( 0, 160, 1000, 300 ); + + // draw lines + wxBitmap bitmap(20,70); + wxMemoryDC memdc; + memdc.SelectObject( bitmap ); + memdc.SetBrush( *wxBLACK_BRUSH ); + memdc.SetPen( *wxWHITE_PEN ); + memdc.DrawRectangle(0,0,20,70); + memdc.DrawLine( 10,0,10,70 ); + + // to the right + wxPen pen = *wxRED_PEN; + memdc.SetPen(pen); + memdc.DrawLine( 10, 5,10, 5 ); + memdc.DrawLine( 10,10,11,10 ); + memdc.DrawLine( 10,15,12,15 ); + memdc.DrawLine( 10,20,13,20 ); + +/* + memdc.SetPen(*wxRED_PEN); + memdc.DrawLine( 12, 5,12, 5 ); + memdc.DrawLine( 12,10,13,10 ); + memdc.DrawLine( 12,15,14,15 ); + memdc.DrawLine( 12,20,15,20 ); +*/ + + // same to the left + memdc.DrawLine( 10,25,10,25 ); + memdc.DrawLine( 10,30, 9,30 ); + memdc.DrawLine( 10,35, 8,35 ); + memdc.DrawLine( 10,40, 7,40 ); + + // XOR draw lines + dc.SetPen(*wxWHITE_PEN); + memdc.SetLogicalFunction( wxINVERT ); + memdc.SetPen( *wxWHITE_PEN ); + memdc.DrawLine( 10,50,10,50 ); + memdc.DrawLine( 10,55,11,55 ); + memdc.DrawLine( 10,60,12,60 ); + memdc.DrawLine( 10,65,13,65 ); + + memdc.DrawLine( 12,50,12,50 ); + memdc.DrawLine( 12,55,13,55 ); + memdc.DrawLine( 12,60,14,60 ); + memdc.DrawLine( 12,65,15,65 ); + + memdc.SelectObject( wxNullBitmap ); + dc.DrawBitmap( bitmap, 10, 170 ); + wxImage image = bitmap.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); + + wxColour clr(255, 255, 0); + wxBrush yellowBrush(clr, wxSOLID); + memdc2.SetBackground(yellowBrush); + memdc2.Clear(); + + wxPen yellowPen(clr, 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( _T("This is text"), 110, 10 ); + dc.DrawRotatedText( _T("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( _T("This is Swiss 18pt text."), 110, 40 ); + + wxCoord length; + wxCoord height; + wxCoord descent; + dc.GetTextExtent( _T("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); + // text drawing should ignore logical function + dc.DrawText( _T("There should be a text below"), 110, 150 ); + dc.DrawRectangle( 110, y, 100, height ); + + y += height; + dc.DrawText( _T("Visible text"), 110, y ); + dc.DrawRectangle( 110, y, 100, height ); + dc.DrawText( _T("Visible text"), 110, y ); + dc.DrawRectangle( 110, y, 100, height ); + dc.SetLogicalFunction(wxCOPY); + + y += height; + dc.DrawRectangle( 110, y, 100, height ); + dc.DrawText( _T("Another visible text"), 110, y ); +} + +static const struct +{ + const wxChar *name; + wxRasterOperationMode 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, DrawMode mode) +{ + dc.DrawText(_T("original image"), 0, 0); + dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0); + dc.DrawText(_T("with colour mask"), 0, 100); + dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, true); + dc.DrawText(_T("the mask image"), 0, 200); + dc.DrawBitmap(*gs_bmpMask, 0, 220, 0); + dc.DrawText(_T("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, 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); + } +} + +#if wxUSE_GRAPHICS_CONTEXT +#ifdef __WXGTK20__ +void MyCanvas::DrawAlpha(wxDC& no_dc) +#else +void MyCanvas::DrawAlpha(wxDC& dc) +#endif +{ +#ifdef __WXGTK__ + wxGCDC dc( this ); + PrepareDC( dc ); +#endif + + wxDouble margin = 20 ; + wxDouble width = 180 ; + wxDouble radius = 30 ; + + dc.SetPen( wxPen( wxColour( 128, 0, 0, 255 ),12, wxSOLID)); + dc.SetBrush( wxBrush( wxColour( 255, 0, 0, 255),wxSOLID)); + + 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, 255 ),12, wxSOLID)); + dc.SetBrush( wxBrush( wxColour( 0, 0, 255, 255),wxSOLID)); + + 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, 255 ),12, wxSOLID)); + dc.SetBrush( wxBrush( wxColour( 192, 192, 0, 255),wxSOLID)); + + 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.SetTextForeground( wxColour(255,255,0,128) ); + dc.SetFont( wxFont( 40, wxFONTFAMILY_SWISS, wxFONTSTYLE_ITALIC, wxFONTWEIGHT_NORMAL ) ); + dc.DrawText( wxT("Hello!"), 120, 80 ); +} + +#endif + +#if wxUSE_GRAPHICS_CONTEXT + +const int BASE = 80.0; +const int BASE2 = BASE/2; +const int BASE4 = BASE/4; + +static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; } + + +// 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 capbilites of the grpahics context + gc->PushState(); // save current translation/scale/other state + gc->Translate(60, 75); // reposition the context origin + + gc->SetPen(wxPen("navy", 1)); + 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(DegToRad(angle)), + 1.5 * BASE2 * sin(DegToRad(angle))); + + // use Rotate to rotate the path + gc->Rotate(DegToRad(angle)); + + // now draw it + gc->DrawPath(path); + gc->PopState(); + } + gc->PopState(); +} +#endif + +void MyCanvas::DrawCircles(wxDC& dc) +{ + int x = 100, + y = 100, + r = 20; + + dc.SetPen( *wxRED_PEN ); + dc.SetBrush( *wxGREEN_BRUSH ); + + dc.DrawText(_T("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(_T("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(_T("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(_T("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(_T("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(_T("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(_T("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 n = 200; + wxPoint pts[n]; + + // background spline calculation + unsigned int radius_pos = 0; + unsigned int angle_pos = 0; + int angle = 0; + for ( int i = 0; i < n; 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( wxT("blue"), 1, wxDOT) ); + dc.DrawLines(5, letters[m]); + dc.SetPen( wxPen( wxT("black"), 4, wxSOLID) ); + dc.DrawSpline(5, letters[m]); + } + +#else + dc.DrawText(_T("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(_T("wxRIGHT"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); + dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxRIGHT); + + r.Offset(0, r.height + 10); + dc.DrawText(_T("wxLEFT"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); + dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxLEFT); + + r.Offset(0, r.height + 10); + dc.DrawText(_T("wxDOWN"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); + dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxDOWN); + + r.Offset(0, r.height + 10); + dc.DrawText(_T("wxUP"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); + dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxUP); + + + // RHS: concentric + r = wxRect(200, 10, 50, 50); + dc.DrawText(_T("Blue inside"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); + dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE); + + r.Offset(0, r.height + 10); + dc.DrawText(_T("White inside"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); + dc.GradientFillConcentric(r, *wxWHITE, *wxBLUE); + + r.Offset(0, r.height + 10); + dc.DrawText(_T("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(_T("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(wxPen(wxColour(255, 0, 0))); + dc.DrawRectangle(r); + r.Deflate(1); + dc.GradientFillLinear(r, wxColour(0,255,0), wxColour(0,0,0), wxNORTH); + dc.DrawRectangle(r2); + r2.Deflate(1); + dc.GradientFillLinear(r2, wxColour(0,0,0), wxColour(0,255,0), wxSOUTH); + dc.DrawRectangle(r3); + r3.Deflate(1); + dc.GradientFillLinear(r3, wxColour(0,255,0), wxColour(0,0,0), wxEAST); + dc.DrawRectangle(r4); + r4.Deflate(1); + dc.GradientFillLinear(r4, wxColour(0,0,0), wxColour(0,255,0), wxWEST); +} + +void MyCanvas::DrawRegions(wxDC& dc) +{ + dc.DrawText(_T("You should see a red rect partly covered by a cyan one ") + _T("on the left"), 10, 5); + dc.DrawText(_T("and 5 smileys from which 4 are partially clipped on the right"), + 10, 5 + dc.GetCharHeight()); + dc.DrawText(_T("The second copy should be identical but right part of it ") + _T("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__) && !defined(__WXMAC__) + if ( !firstTime ) + region.Offset(10, 10); +#endif + dc.SetDeviceClippingRegion(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 ); + } +} + +#if TEST_CAIRO_EVERYWHERE +extern wxGraphicsRenderer* gCairoRenderer; +#endif + +void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) +{ + wxPaintDC pdc(this); + +#if wxUSE_GRAPHICS_CONTEXT +#if TEST_CAIRO_EVERYWHERE + wxGCDC gdc; + gdc.SetGraphicsContext( gCairoRenderer->CreateContext( pdc ) ); +#else + wxGCDC gdc( pdc ) ; +#endif + wxDC &dc = m_useContext ? (wxDC&) gdc : (wxDC&) pdc ; +#else + wxDC &dc = pdc ; +#endif + + PrepareDC(dc); + + m_owner->PrepareDC(dc); + + dc.SetBackgroundMode( m_owner->m_backgroundMode ); + if ( m_owner->m_backgroundBrush.Ok() ) + dc.SetBackground( m_owner->m_backgroundBrush ); + if ( m_owner->m_colourForeground.Ok() ) + dc.SetTextForeground( m_owner->m_colourForeground ); + if ( m_owner->m_colourBackground.Ok() ) + dc.SetTextBackground( m_owner->m_colourBackground ); + + if ( m_owner->m_textureBackground) { + if ( ! m_owner->m_backgroundBrush.Ok() ) { + wxColour clr(0,128,0); + wxBrush b(clr, wxSOLID); + dc.SetBackground(b); + } + } + + 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 ); + 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 wxUSE_GRAPHICS_CONTEXT + case File_ShowAlpha: + DrawAlpha(dc); + break; + case File_ShowGraphics: + DrawGraphics(gdc.GetGraphicsContext()); + break; +#endif + + case File_ShowGradients: + DrawGradients(dc); + break; + + default: + break; + } +} + +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( wxT("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, wxSOLID ) ); + 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; + + int x,y,xx,yy ; + event.GetPosition(&x,&y); + CalcUnscrolledPosition( x, y, &xx, &yy ); + + wxString str; + str.Printf( wxT("Rectangle selection from %d,%d to %d,%d"), + m_anchorpoint.x, m_anchorpoint.y , (int)xx, (int)yy ); + wxMessageBox( str , wxT("Rubber-Banding") ); + + } +} + +// ---------------------------------------------------------------------------- +// 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. +BEGIN_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_GraphicContext, MyFrame::OnGraphicContext) +#endif + + 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, wxID_ANY, 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, _T("&Default screen\tF1")); + menuFile->Append(File_ShowText, _T("&Text screen\tF2")); + menuFile->Append(File_ShowLines, _T("&Lines screen\tF3")); + menuFile->Append(File_ShowBrushes, _T("&Brushes screen\tF4")); + menuFile->Append(File_ShowPolygons, _T("&Polygons screen\tF5")); + menuFile->Append(File_ShowMask, _T("&Mask screen\tF6")); + menuFile->Append(File_ShowMaskStretch, _T("1/&2 scaled mask\tShift-F6")); + menuFile->Append(File_ShowOps, _T("&Raster operations screen\tF7")); + menuFile->Append(File_ShowRegions, _T("Re&gions screen\tF8")); + menuFile->Append(File_ShowCircles, _T("&Circles screen\tF9")); +#if wxUSE_GRAPHICS_CONTEXT + menuFile->Append(File_ShowAlpha, _T("&Alpha screen\tF10")); +#endif + menuFile->Append(File_ShowSplines, _T("&Splines screen\tF11")); + menuFile->Append(File_ShowGradients, _T("&Gradients screen\tF12")); +#if wxUSE_GRAPHICS_CONTEXT + menuFile->Append(File_ShowGraphics, _T("&Graphics screen")); +#endif menuFile->AppendSeparator(); - menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program"); - + menuFile->AppendCheckItem(File_Clip, _T("&Clip\tCtrl-C"), _T("Clip/unclip drawing")); +#if wxUSE_GRAPHICS_CONTEXT + menuFile->AppendCheckItem(File_GraphicContext, _T("&Use GraphicContext\tCtrl-Y"), _T("Use GraphicContext")); +#endif + menuFile->AppendSeparator(); + menuFile->Append(File_About, _T("&About...\tCtrl-A"), _T("Show about dialog")); + menuFile->AppendSeparator(); + menuFile->Append(File_Quit, _T("E&xit\tAlt-X"), _T("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" ); - + menuMapMode->Append( MapMode_Text, _T("&TEXT map mode") ); + menuMapMode->Append( MapMode_Lometric, _T("&LOMETRIC map mode") ); + menuMapMode->Append( MapMode_Twips, _T("T&WIPS map mode") ); + menuMapMode->Append( MapMode_Points, _T("&POINTS map mode") ); + menuMapMode->Append( MapMode_Metric, _T("&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, _T("Stretch &horizontally\tCtrl-H") ); + menuUserScale->Append( UserScale_ShrinkHoriz, _T("Shrin&k horizontally\tCtrl-G") ); + menuUserScale->Append( UserScale_StretchVertic, _T("Stretch &vertically\tCtrl-V") ); + menuUserScale->Append( UserScale_ShrinkVertic, _T("&Shrink vertically\tCtrl-W") ); + menuUserScale->AppendSeparator(); + menuUserScale->Append( UserScale_Restore, _T("&Restore to normal\tCtrl-0") ); + wxMenu *menuAxis = new wxMenu; - menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally" ); - menuAxis->Append( AxisMirror_Vertic, "Mirror vertically" ); - + menuAxis->AppendCheckItem( AxisMirror_Horiz, _T("Mirror horizontally\tCtrl-M") ); + menuAxis->AppendCheckItem( AxisMirror_Vertic, _T("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->Append( LogicalOrigin_MoveDown, _T("Move &down\tCtrl-D") ); + menuLogical->Append( LogicalOrigin_MoveUp, _T("Move &up\tCtrl-U") ); + menuLogical->Append( LogicalOrigin_MoveLeft, _T("Move &right\tCtrl-L") ); + menuLogical->Append( LogicalOrigin_MoveRight, _T("Move &left\tCtrl-R") ); + menuLogical->AppendSeparator(); + menuLogical->Append( LogicalOrigin_Set, _T("Set to (&100, 100)\tShift-Ctrl-1") ); + menuLogical->Append( LogicalOrigin_Restore, _T("&Restore to normal\tShift-Ctrl-0") ); + + wxMenu *menuColour = new wxMenu; +#if wxUSE_COLOURDLG + menuColour->Append( Colour_TextForeground, _T("Text &foreground...") ); + menuColour->Append( Colour_TextBackground, _T("Text &background...") ); + menuColour->Append( Colour_Background, _T("Background &colour...") ); +#endif // wxUSE_COLOURDLG + menuColour->AppendCheckItem( Colour_BackgroundMode, _T("&Opaque/transparent\tCtrl-B") ); + menuColour->AppendCheckItem( Colour_TextureBackgound, _T("Draw textured back&ground\tCtrl-T") ); // 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(menuAxis, "&Axis"); - menuBar->Append(menuLogical, "&LogicalOrigin"); + menuBar->Append(menuFile, _T("&File")); + menuBar->Append(menuMapMode, _T("&Mode")); + menuBar->Append(menuUserScale, _T("&Scale")); + menuBar->Append(menuAxis, _T("&Axis")); + menuBar->Append(menuLogical, _T("&Origin")); + menuBar->Append(menuColour, _T("&Colours")); // ... and attach this menu bar to the frame SetMenuBar(menuBar); - // create a status bar just for fun (by default with 1 pane only) +#if wxUSE_STATUSBAR CreateStatusBar(2); - SetStatusText("Welcome to wxWindows!"); - + SetStatusText(_T("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; + m_backgroundMode = wxSOLID; + m_colourForeground = *wxRED; + m_colourBackground = *wxBLUE; + 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); + // true is to force the frame to close + Close(true); } 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); + wxMessageBox(msg, _T("About Drawing"), wxOK | wxICON_INFORMATION, this); } -void MyFrame::OnOption(wxCommandEvent &event) +void MyFrame::OnClip(wxCommandEvent& event) { - switch (event.GetInt()) + m_canvas->Clip(event.IsChecked()); +} + +#if wxUSE_GRAPHICS_CONTEXT +void MyFrame::OnGraphicContext(wxCommandEvent& event) +{ + m_canvas->UseGraphicContext(event.IsChecked()); +} +#endif + +void MyFrame::OnShow(wxCommandEvent& event) +{ + m_canvas->ToShow(event.GetId()); +} + +void MyFrame::OnOption(wxCommandEvent& event) +{ + switch (event.GetId()) { case MapMode_Text: m_mapMode = wxMM_TEXT; - break; + break; case MapMode_Lometric: m_mapMode = wxMM_LOMETRIC; - break; - case MapMode_Twips: + break; + case MapMode_Twips: m_mapMode = wxMM_TWIPS; - break; - case MapMode_Points: + break; + case MapMode_Points: m_mapMode = wxMM_POINTS; - break; - case MapMode_Metric: + 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 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; + 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_COLOURDLG + case Colour_TextForeground: + m_colourForeground = SelectColour(); + break; + case Colour_TextBackground: + m_colourBackground = SelectColour(); + break; + case Colour_Background: + { + wxColour col = SelectColour(); + if ( col.Ok() ) + { + m_backgroundBrush.SetColour(col); + } + } + break; +#endif // wxUSE_COLOURDLG + + case Colour_BackgroundMode: + m_backgroundMode = m_backgroundMode == wxSOLID ? wxTRANSPARENT + : wxSOLID; + break; + + case Colour_TextureBackgound: + m_textureBackground = ! m_textureBackground; + break; + + default: + // skip Refresh() + return; } - - Refresh(); + + m_canvas->Refresh(); } -void MyFrame::OnPaint(wxPaintEvent &WXUNUSED(event) ) +void MyFrame::PrepareDC(wxDC& dc) { - wxPaintDC dc(this); - dc.SetMapMode( m_mapMode ); - dc.SetUserScale( m_xUserScale, m_yUserScale ); - dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); - - dc.DrawRectangle( 10, 10, 90, 90 ); - dc.DrawRoundedRectangle( 10, 110, 90, 90, 5 ); - - dc.DrawText( "This is text.", 110, 10 ); - - dc.DrawIcon( wxICON(mondrian), 110, 40 ); + dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); + dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed ); + dc.SetUserScale( m_xUserScale, m_yUserScale ); + dc.SetMapMode( m_mapMode ); } -void MyFrame::OnMouseMove(wxMouseEvent &event) +#if wxUSE_COLOURDLG +wxColour MyFrame::SelectColour() { - wxClientDC dc(this); - dc.SetMapMode( m_mapMode ); - dc.SetUserScale( m_xUserScale, m_yUserScale ); - dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); + wxColour col; + wxColourData data; + wxColourDialog dialog(this, &data); + + if ( dialog.ShowModal() == wxID_OK ) + { + col = dialog.GetColourData().GetColour(); + } - 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 ); + return col; } +#endif // wxUSE_COLOURDLG