X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b985763280ef50a537c28ce6e811c9186859453d..761df41e86ceeed56d32c038a6c9f88554d4f47a:/samples/drawing/drawing.cpp diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp index d03f254d8e..93c4b6df2f 100644 --- a/samples/drawing/drawing.cpp +++ b/samples/drawing/drawing.cpp @@ -1,6 +1,6 @@ ///////////////////////////////////////////////////////////////////////////// // Name: drawing.cpp -// Purpose: Minimal wxWindows sample +// Purpose: shows and tests wxDC features // Author: Robert Roebling // Modified by: // Created: 04/01/98 @@ -16,9 +16,10 @@ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- + #ifdef __GNUG__ - #pragma implementation "minimal.cpp" - #pragma interface "minimal.cpp" + #pragma implementation "drawing.cpp" + #pragma interface "drawing.cpp" #endif // For compilers that support precompilation, includes "wx/wx.h". @@ -34,14 +35,49 @@ #include "wx/wx.h" #endif +#include "wx/colordlg.h" +#include "wx/image.h" + // ---------------------------------------------------------------------------- // ressources // ---------------------------------------------------------------------------- + // the application icon -#if defined(__WXGTK__) || defined(__WXMOTIF__) +#if defined(__WXGTK__) || defined(__WXMOTIF__) || defined(__WXMAC__) #include "mondrian.xpm" #endif +// ---------------------------------------------------------------------------- +// constants +// ---------------------------------------------------------------------------- + +// what do we show on screen (there are too many shapes to put them all on +// screen simultaneously) +enum ScreenToShow +{ + Show_Default, + Show_Text, + Show_Lines, + Show_Brushes, + Show_Polygons, + Show_Mask, + Show_Ops, + Show_Regions, + Show_Circles +}; + +// ---------------------------------------------------------------------------- +// global variables +// ---------------------------------------------------------------------------- + +static wxBitmap *gs_bmpNoMask = NULL, + *gs_bmpWithColMask = NULL, + *gs_bmpMask = NULL, + *gs_bmpWithMask = NULL, + *gs_bmp4 = NULL, + *gs_bmp4_mono = NULL, + *gs_bmp36 = NULL; + // ---------------------------------------------------------------------------- // private classes // ---------------------------------------------------------------------------- @@ -57,8 +93,17 @@ 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 { @@ -69,21 +114,65 @@ public: // event handlers (these functions should _not_ be virtual) void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); - void OnPaint(wxPaintEvent &event); + void OnShow(wxCommandEvent &event); void OnOption(wxCommandEvent &event); - void OnMouseMove(wxMouseEvent &event); - int m_mapMode; - double m_xUserScale; - double m_yUserScale; - int m_xLogicalOrigin; - int m_yLogicalOrigin; + wxColour SelectColour(); + void PrepareDC(wxDC& dc); + + int m_backgroundMode; + int m_textureBackground; + int 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 wxWindows 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 Show(ScreenToShow show) { m_show = show; Refresh(); } + +protected: + void DrawTestLines( int x, int y, int width, wxDC &dc ); + void DrawTestPoly(wxDC& dc); + void DrawTestBrushes(wxDC& dc); + void DrawText(wxDC& dc); + void DrawImages(wxDC& dc); + void DrawWithLogicalOps(wxDC& dc); + void DrawRegions(wxDC& dc); + void DrawCircles(wxDC& dc); + void DrawDefault(wxDC& dc); + + void DrawRegionsHelper(wxDC& dc, wxCoord x); + +private: + MyFrame *m_owner; + + ScreenToShow m_show; + wxBitmap m_smile_bmp; + wxIcon m_std_icon; + + DECLARE_EVENT_TABLE() +}; + // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- @@ -92,64 +181,56 @@ private: enum { // menu items - Minimal_Quit = 1, - Minimal_About, - - MapMode_Text, + File_Quit = 1, + File_About, + + MenuShow_First, + File_ShowDefault = MenuShow_First, + File_ShowText, + File_ShowLines, + File_ShowBrushes, + File_ShowPolygons, + File_ShowMask, + File_ShowOps, + File_ShowRegions, + File_ShowCircles, + MenuShow_Last = File_ShowCircles, + + MenuOption_First, + + 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, - + + Colour_TextForeground, + Colour_TextBackground, + Colour_Background, + Colour_BackgroundMode, + Colour_TextureBackgound, + + MenuOption_Last = Colour_TextureBackgound }; // ---------------------------------------------------------------------------- // event tables and other macros for wxWindows // ---------------------------------------------------------------------------- -// 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 // the application object during program execution (it's better than using a @@ -166,63 +247,805 @@ IMPLEMENT_APP(MyApp) // the application class // ---------------------------------------------------------------------------- +bool MyApp::LoadImages() +{ + gs_bmpNoMask = new wxBitmap; + gs_bmpWithColMask = new wxBitmap; + gs_bmpMask = new wxBitmap; + gs_bmpWithMask = new wxBitmap; + gs_bmp4 = new wxBitmap; + gs_bmp4_mono = new wxBitmap; + gs_bmp36 = new wxBitmap; + + wxPathList pathList; + pathList.Add("."); + pathList.Add(".."); + + wxString path = pathList.FindValidPath("pat4.bmp"); + if ( !path ) + return FALSE; + + /* 4 colour bitmap */ + gs_bmp4->LoadFile(path, wxBITMAP_TYPE_BMP); + /* turn into mono-bitmap */ + gs_bmp4_mono->LoadFile(path, wxBITMAP_TYPE_BMP); + wxMask* mask4 = new wxMask(*gs_bmp4_mono, *wxBLACK); + gs_bmp4_mono->SetMask(mask4); + + path = pathList.FindValidPath("pat36.bmp"); + if ( !path ) + return FALSE; + gs_bmp36->LoadFile(path, wxBITMAP_TYPE_BMP); + wxMask* mask36 = new wxMask(*gs_bmp36, *wxBLACK); + gs_bmp36->SetMask(mask36); + + path = pathList.FindValidPath("image.bmp"); + if ( !path ) + return FALSE; + gs_bmpNoMask->LoadFile(path, wxBITMAP_TYPE_BMP); + gs_bmpWithMask->LoadFile(path, wxBITMAP_TYPE_BMP); + gs_bmpWithColMask->LoadFile(path, wxBITMAP_TYPE_BMP); + + path = pathList.FindValidPath("mask.bmp"); + if ( !path ) + return FALSE; + gs_bmpMask->LoadFile(path, wxBITMAP_TYPE_BMP); + + wxMask *mask = new wxMask(*gs_bmpMask, *wxBLACK); + gs_bmpWithMask->SetMask(mask); + + mask = new wxMask(*gs_bmpWithColMask, *wxWHITE); + gs_bmpWithColMask->SetMask(mask); + + return TRUE; +} + // `Main program' equivalent: the program execution "starts" here bool MyApp::OnInit() { // Create the main application window MyFrame *frame = new MyFrame("Drawing sample", - wxPoint(50, 50), wxSize(450, 340)); + 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); SetTopWindow(frame); - // success: wxApp::OnRun() will be called which will enter the main message - // loop and the application will run. If we returned FALSE here, the - // application would exit immediately. + if ( !LoadImages() ) + { + wxLogError(wxT("Can't load one of the bitmap files needed ") + wxT("for this sample from the current or parent ") + wxT("directory, please copy them there.")); + + // stop here + DeleteBitmaps(); + + return FALSE; + } + + // ok, continue return TRUE; } +void MyApp::DeleteBitmaps() +{ + delete gs_bmpNoMask; + delete gs_bmpWithColMask; + delete gs_bmpMask; + delete gs_bmpWithMask; + delete gs_bmp4; + delete gs_bmp4_mono; + delete gs_bmp36; + + gs_bmpNoMask = NULL; + gs_bmpWithColMask = NULL; + gs_bmpMask = NULL; + gs_bmpWithMask = NULL; + gs_bmp4 = NULL; + gs_bmp4_mono = NULL; + gs_bmp36 = NULL; +} + +// ---------------------------------------------------------------------------- +// MyCanvas +// ---------------------------------------------------------------------------- + +// the event tables connect the wxWindows events with the functions (event +// handlers) which process them. +BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) + EVT_PAINT (MyCanvas::OnPaint) + EVT_MOTION (MyCanvas::OnMouseMove) +END_EVENT_TABLE() + +#include "smile.xpm" + +MyCanvas::MyCanvas(MyFrame *parent) + : wxScrolledWindow(parent, -1, wxDefaultPosition, wxDefaultSize, + wxHSCROLL | wxVSCROLL | wxNO_FULL_REPAINT_ON_RESIZE) +{ + m_owner = parent; + m_show = Show_Default; + m_smile_bmp = wxBitmap(smile_xpm); + m_std_icon = wxTheApp->GetStdIcon(wxICON_INFORMATION); +} + +void MyCanvas::DrawTestBrushes(wxDC& dc) +{ + static const wxCoord WIDTH = 200; + static const wxCoord HEIGHT = 80; + + wxCoord x = 10, + y = 10; + + dc.SetBrush(wxBrush(*wxGREEN, wxSOLID)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Solid green", x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*wxRED, wxCROSSDIAG_HATCH)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Hatched red", x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*gs_bmpMask)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Stipple mono", x + 10, y + 10); + + y += HEIGHT; + dc.SetBrush(wxBrush(*gs_bmpNoMask)); + dc.DrawRectangle(x, y, WIDTH, HEIGHT); + dc.DrawText("Stipple colour", x + 10, y + 10); +} + +void MyCanvas::DrawTestPoly(wxDC& dc) +{ + wxBrush brushHatch(*wxRED, wxFDIAGONAL_HATCH); + dc.SetBrush(brushHatch); + + wxPoint star[5]; + star[0] = wxPoint(100, 60); + star[1] = wxPoint(60, 150); + star[2] = wxPoint(160, 100); + star[3] = wxPoint(40, 100); + star[4] = wxPoint(140, 150); + + dc.DrawText("You should see two (irregular) stars below, the left one " + "hatched", 10, 10); + dc.DrawText("except for the central region and the right " + "one entirely hatched", 10, 30); + + dc.DrawPolygon(WXSIZEOF(star), star); + dc.DrawPolygon(WXSIZEOF(star), star, 160, 0, wxWINDING_RULE); +} + +void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc ) +{ + dc.SetPen( wxPen( wxT("black"), width, wxSOLID) ); + dc.SetBrush( *wxRED_BRUSH ); + dc.DrawText(wxString::Format(wxT("Testing lines of width %d"), width), x + 10, y - 10); + dc.DrawRectangle( x+10, y+10, 100, 190 ); + + dc.DrawText("Solid/dot/short dash/long dash/dot dash", x + 150, y + 10); + dc.SetPen( wxPen( wxT("black"), width, wxSOLID) ); + dc.DrawLine( x+20, y+20, 100, y+20 ); + dc.SetPen( wxPen( wxT("black"), width, wxDOT) ); + dc.DrawLine( x+20, y+30, 100, y+30 ); + dc.SetPen( wxPen( wxT("black"), width, wxSHORT_DASH) ); + dc.DrawLine( x+20, y+40, 100, y+40 ); + dc.SetPen( wxPen( wxT("black"), width, wxLONG_DASH) ); + dc.DrawLine( x+20, y+50, 100, y+50 ); + dc.SetPen( wxPen( wxT("black"), width, wxDOT_DASH) ); + dc.DrawLine( x+20, y+60, 100, y+60 ); + + dc.DrawText("Misc hatches", x + 150, y + 70); + dc.SetPen( wxPen( wxT("black"), width, wxBDIAGONAL_HATCH) ); + dc.DrawLine( x+20, y+70, 100, y+70 ); + dc.SetPen( wxPen( wxT("black"), width, wxCROSSDIAG_HATCH) ); + dc.DrawLine( x+20, y+80, 100, y+80 ); + dc.SetPen( wxPen( wxT("black"), width, wxFDIAGONAL_HATCH) ); + dc.DrawLine( x+20, y+90, 100, y+90 ); + dc.SetPen( wxPen( wxT("black"), width, wxCROSS_HATCH) ); + dc.DrawLine( x+20, y+100, 100, y+100 ); + dc.SetPen( wxPen( wxT("black"), width, wxHORIZONTAL_HATCH) ); + dc.DrawLine( x+20, y+110, 100, y+110 ); + dc.SetPen( wxPen( wxT("black"), width, wxVERTICAL_HATCH) ); + dc.DrawLine( x+20, y+120, 100, y+120 ); + + dc.DrawText("User dash", x + 150, y + 140); + wxPen ud( wxT("black"), width, wxUSER_DASH ); + wxDash dash1[1]; + dash1[0] = 0; + ud.SetDashes( 1, dash1 ); + dc.DrawLine( x+20, y+140, 100, y+140 ); + dash1[0] = 1; + ud.SetDashes( 1, dash1 ); + dc.DrawLine( x+20, y+150, 100, y+150 ); + dash1[0] = 2; + ud.SetDashes( 1, dash1 ); + dc.DrawLine( x+20, y+160, 100, y+160 ); + dash1[0] = 0x7F; + ud.SetDashes( 1, dash1 ); + dc.DrawLine( x+20, y+170, 100, y+170 ); +} + +void MyCanvas::DrawDefault(wxDC& dc) +{ + // mark the origin + dc.DrawCircle(0, 0, 10); +#if !(defined __WXGTK__) && !(defined __WXMOTIF__) && !(defined __WXMGL__) + // not implemented in wxGTK or wxMOTIF :-( + dc.FloodFill(0, 0, wxColour(255, 0, 0)); +#endif // + + dc.DrawCheckMark(5, 80, 15, 15); + dc.DrawCheckMark(25, 80, 30, 30); + dc.DrawCheckMark(60, 80, 60, 60); + + // this is the test for "blitting bitmap into DC damages selected brush" bug + wxCoord rectSize = m_std_icon.GetWidth() + 10; + wxCoord x = 100; + dc.SetPen(*wxTRANSPARENT_PEN); + dc.SetBrush( *wxGREEN_BRUSH ); + dc.DrawRectangle(x, 10, rectSize, rectSize); + dc.DrawBitmap(m_std_icon, x + 5, 15, TRUE); + x += rectSize + 10; + dc.DrawRectangle(x, 10, rectSize, rectSize); + dc.DrawIcon(m_std_icon, x + 5, 15); + x += rectSize + 10; + dc.DrawRectangle(x, 10, rectSize, rectSize); + + // test for "transparent" bitmap drawing (it intersects with the last + // rectangle above) + //dc.SetBrush( *wxTRANSPARENT_BRUSH ); + + if (m_smile_bmp.Ok()) + dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, TRUE); + + dc.SetBrush( *wxBLACK_BRUSH ); + dc.DrawRectangle( 0, 160, 1000, 300 ); + + // draw lines + wxBitmap bitmap(20,70); + wxMemoryDC memdc; + memdc.SelectObject( bitmap ); + memdc.SetBrush( *wxBLACK_BRUSH ); + memdc.SetPen( *wxWHITE_PEN ); + memdc.DrawRectangle(0,0,20,70); + memdc.DrawLine( 10,0,10,70 ); + + // to the right + wxPen pen = *wxRED_PEN; + memdc.SetPen(pen); + memdc.DrawLine( 10, 5,10, 5 ); + memdc.DrawLine( 10,10,11,10 ); + memdc.DrawLine( 10,15,12,15 ); + memdc.DrawLine( 10,20,13,20 ); + +/* + memdc.SetPen(*wxRED_PEN); + memdc.DrawLine( 12, 5,12, 5 ); + memdc.DrawLine( 12,10,13,10 ); + memdc.DrawLine( 12,15,14,15 ); + memdc.DrawLine( 12,20,15,20 ); +*/ + + // same to the left + memdc.DrawLine( 10,25,10,25 ); + memdc.DrawLine( 10,30, 9,30 ); + memdc.DrawLine( 10,35, 8,35 ); + memdc.DrawLine( 10,40, 7,40 ); + + // XOR draw lines + dc.SetPen(*wxWHITE_PEN); + memdc.SetLogicalFunction( wxINVERT ); + memdc.SetPen( *wxWHITE_PEN ); + memdc.DrawLine( 10,50,10,50 ); + memdc.DrawLine( 10,55,11,55 ); + memdc.DrawLine( 10,60,12,60 ); + memdc.DrawLine( 10,65,13,65 ); + + memdc.DrawLine( 12,50,12,50 ); + memdc.DrawLine( 12,55,13,55 ); + memdc.DrawLine( 12,60,14,60 ); + memdc.DrawLine( 12,65,15,65 ); + + memdc.SelectObject( wxNullBitmap ); + dc.DrawBitmap( bitmap, 10, 170 ); + wxImage image( bitmap ); + image.Rescale( 60,210 ); + bitmap = image.ConvertToBitmap(); + dc.DrawBitmap( bitmap, 50, 170 ); + + // test the rectangle outline drawing - there should be one pixel between + // the rect and the lines + dc.SetPen(*wxWHITE_PEN); + dc.SetBrush( *wxTRANSPARENT_BRUSH ); + dc.DrawRectangle(150, 170, 49, 29); + dc.DrawRectangle(200, 170, 49, 29); + dc.SetPen(*wxWHITE_PEN); + dc.DrawLine(250, 210, 250, 170); + dc.DrawLine(260, 200, 150, 200); + + // test the rectangle filled drawing - there should be one pixel between + // the rect and the lines + dc.SetPen(*wxTRANSPARENT_PEN); + dc.SetBrush( *wxWHITE_BRUSH ); + dc.DrawRectangle(300, 170, 49, 29); + dc.DrawRectangle(350, 170, 49, 29); + dc.SetPen(*wxWHITE_PEN); + dc.DrawLine(400, 170, 400, 210); + dc.DrawLine(300, 200, 410, 200); + + // a few more tests of this kind + dc.SetPen(*wxRED_PEN); + dc.SetBrush( *wxWHITE_BRUSH ); + dc.DrawRectangle(300, 220, 1, 1); + dc.DrawRectangle(310, 220, 2, 2); + dc.DrawRectangle(320, 220, 3, 3); + dc.DrawRectangle(330, 220, 4, 4); + + dc.SetPen(*wxTRANSPARENT_PEN); + dc.SetBrush( *wxWHITE_BRUSH ); + dc.DrawRectangle(300, 230, 1, 1); + dc.DrawRectangle(310, 230, 2, 2); + dc.DrawRectangle(320, 230, 3, 3); + dc.DrawRectangle(330, 230, 4, 4); + + // and now for filled rect with outline + dc.SetPen(*wxRED_PEN); + dc.SetBrush( *wxWHITE_BRUSH ); + dc.DrawRectangle(500, 170, 49, 29); + dc.DrawRectangle(550, 170, 49, 29); + dc.SetPen(*wxWHITE_PEN); + dc.DrawLine(600, 170, 600, 210); + dc.DrawLine(500, 200, 610, 200); + + // test the rectangle outline drawing - there should be one pixel between + // the rect and the lines + dc.SetPen(*wxWHITE_PEN); + dc.SetBrush( *wxTRANSPARENT_BRUSH ); + dc.DrawRoundedRectangle(150, 270, 49, 29, 6); + dc.DrawRoundedRectangle(200, 270, 49, 29, 6); + dc.SetPen(*wxWHITE_PEN); + dc.DrawLine(250, 270, 250, 310); + dc.DrawLine(150, 300, 260, 300); + + // test the rectangle filled drawing - there should be one pixel between + // the rect and the lines + dc.SetPen(*wxTRANSPARENT_PEN); + dc.SetBrush( *wxWHITE_BRUSH ); + dc.DrawRoundedRectangle(300, 270, 49, 29, 6); + dc.DrawRoundedRectangle(350, 270, 49, 29, 6); + dc.SetPen(*wxWHITE_PEN); + dc.DrawLine(400, 270, 400, 310); + dc.DrawLine(300, 300, 410, 300); + + // Added by JACS to demonstrate bizarre behaviour. + // With a size of 70, we get a missing red RHS, + // and the hight is too small, so we get yellow + // showing. With a size of 40, it draws as expected: + // it just shows a white rectangle with red outline. + int totalWidth = 70; + int totalHeight = 70; + wxBitmap bitmap2(totalWidth, totalHeight); + + wxMemoryDC memdc2; + memdc2.SelectObject(bitmap2); + + wxBrush yellowBrush(wxColour(255, 255, 0), wxSOLID); + memdc2.SetBackground(yellowBrush); + memdc2.Clear(); + + wxPen yellowPen(wxColour(255, 255, 0), 1, wxSOLID); + + // Now draw a white rectangle with red outline. It should + // entirely eclipse the yellow background. + memdc2.SetPen(*wxRED_PEN); + memdc2.SetBrush(*wxWHITE_BRUSH); + + memdc2.DrawRectangle(0, 0, totalWidth, totalHeight); + + memdc2.SetPen(wxNullPen); + memdc2.SetBrush(wxNullBrush); + memdc2.SelectObject(wxNullBitmap); + + dc.DrawBitmap(bitmap2, 500, 270); + + // Repeat, but draw directly on dc + // Draw a yellow rectangle filling the bitmap + + x = 600; int y = 270; + dc.SetPen(yellowPen); + dc.SetBrush(yellowBrush); + dc.DrawRectangle(x, y, totalWidth, totalHeight); + + // Now draw a white rectangle with red outline. It should + // entirely eclipse the yellow background. + dc.SetPen(*wxRED_PEN); + dc.SetBrush(*wxWHITE_BRUSH); + + dc.DrawRectangle(x, y, totalWidth, totalHeight); +} + +void MyCanvas::DrawText(wxDC& dc) +{ + // set underlined font for testing + dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, TRUE) ); + dc.DrawText( "This is text", 110, 10 ); + dc.DrawRotatedText( "That is text", 20, 10, -45 ); + + // use wxSWISS_FONT and not wxNORMAL_FONT as the latter can't be rotated + // under Win9x (it is not TrueType) + dc.SetFont( *wxSWISS_FONT ); + + wxString text; + dc.SetBackgroundMode(wxTRANSPARENT); + + for ( int n = -180; n < 180; n += 30 ) + { + text.Printf(wxT(" %d rotated text"), n); + dc.DrawRotatedText(text , 400, 400, n); + } + + dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) ); + + dc.DrawText( "This is Swiss 18pt text.", 110, 40 ); + + long length; + long height; + long descent; + dc.GetTextExtent( "This is Swiss 18pt text.", &length, &height, &descent ); + text.Printf( wxT("Dimensions are length %ld, height %ld, descent %ld"), length, height, descent ); + dc.DrawText( text, 110, 80 ); + + text.Printf( wxT("CharHeight() returns: %d"), dc.GetCharHeight() ); + dc.DrawText( text, 110, 120 ); + + dc.DrawRectangle( 100, 40, 4, height ); + + // test the logical function effect + wxCoord y = 150; + dc.SetLogicalFunction(wxINVERT); + dc.DrawText( "There should be no text below", 110, 150 ); + dc.DrawRectangle( 110, y, 100, height ); + + // twice drawn inverted should result in invisible + y += height; + dc.DrawText( "Invisible text", 110, y ); + dc.DrawRectangle( 110, y, 100, height ); + dc.DrawText( "Invisible text", 110, y ); + dc.DrawRectangle( 110, y, 100, height ); + dc.SetLogicalFunction(wxCOPY); + + y += height; + dc.DrawRectangle( 110, y, 100, height ); + dc.DrawText( "Visible text", 110, y ); +} + +static const struct +{ + const wxChar *name; + int rop; +} rasterOperations[] = +{ + { wxT("wxAND"), wxAND }, + { wxT("wxAND_INVERT"), wxAND_INVERT }, + { wxT("wxAND_REVERSE"), wxAND_REVERSE }, + { wxT("wxCLEAR"), wxCLEAR }, + { wxT("wxCOPY"), wxCOPY }, + { wxT("wxEQUIV"), wxEQUIV }, + { wxT("wxINVERT"), wxINVERT }, + { wxT("wxNAND"), wxNAND }, + { wxT("wxNO_OP"), wxNO_OP }, + { wxT("wxOR"), wxOR }, + { wxT("wxOR_INVERT"), wxOR_INVERT }, + { wxT("wxOR_REVERSE"), wxOR_REVERSE }, + { wxT("wxSET"), wxSET }, + { wxT("wxSRC_INVERT"), wxSRC_INVERT }, + { wxT("wxXOR"), wxXOR }, +}; + +void MyCanvas::DrawImages(wxDC& dc) +{ + dc.DrawText("original image", 0, 0); + dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0); + dc.DrawText("with colour mask", 0, 100); + dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, TRUE); + dc.DrawText("the mask image", 0, 200); + dc.DrawBitmap(*gs_bmpMask, 0, 220, 0); + dc.DrawText("masked image", 0, 300); + dc.DrawBitmap(*gs_bmpWithMask, 0, 320, TRUE); + + int cx = gs_bmpWithColMask->GetWidth(), + cy = gs_bmpWithColMask->GetHeight(); + + wxMemoryDC memDC; + for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ ) + { + wxCoord x = 120 + 150*(n%4), + y = 20 + 100*(n/4); + + dc.DrawText(rasterOperations[n].name, x, y - 20); + memDC.SelectObject(*gs_bmpWithColMask); + dc.Blit(x, y, cx, cy, &memDC, 0, 0, rasterOperations[n].rop, TRUE); + } +} + +void MyCanvas::DrawWithLogicalOps(wxDC& dc) +{ + static const wxCoord w = 60; + static const wxCoord h = 60; + + // reuse the text colour here + dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID)); + dc.SetBrush(*wxTRANSPARENT_BRUSH); + + size_t n; + for ( n = 0; n < WXSIZEOF(rasterOperations); n++ ) + { + wxCoord x = 20 + 150*(n%4), + y = 20 + 100*(n/4); + + dc.DrawText(rasterOperations[n].name, x, y - 20); + dc.SetLogicalFunction(rasterOperations[n].rop); + dc.DrawRectangle(x, y, w, h); + dc.DrawLine(x, y, x + w, y + h); + dc.DrawLine(x + w, y, x, y + h); + } + + // now some filled rectangles + dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID)); + + for ( n = 0; n < WXSIZEOF(rasterOperations); n++ ) + { + wxCoord x = 20 + 150*(n%4), + y = 500 + 100*(n/4); + + dc.DrawText(rasterOperations[n].name, x, y - 20); + dc.SetLogicalFunction(rasterOperations[n].rop); + dc.DrawRectangle(x, y, w, h); + } +} + +void MyCanvas::DrawCircles(wxDC& dc) +{ + int x = 100, + y = 100, + r = 20; + + dc.DrawText("Some circles", 0, y); + dc.DrawCircle(x, y, r); + dc.DrawCircle(x + 2*r, y, r); + dc.DrawCircle(x + 4*r, y, r); + + y += 2*r; + dc.DrawText("And ellipses", 0, y); + dc.DrawEllipse(x - r, y, 2*r, r); + dc.DrawEllipse(x + r, y, 2*r, r); + dc.DrawEllipse(x + 3*r, y, 2*r, r); + + y += 2*r; + dc.DrawText("And arcs", 0, y); + dc.DrawArc(x - r, y, x + r, y, x, y); + dc.DrawArc(x + 4*r, y, x + 2*r, y, x + 3*r, y); + dc.DrawArc(x + 5*r, y, x + 5*r, y, x + 6*r, y); + + y += 2*r; + dc.DrawEllipticArc(x - r, y, 2*r, r, 0, 90); + dc.DrawEllipticArc(x + r, y, 2*r, r, 90, 180); + dc.DrawEllipticArc(x + 3*r, y, 2*r, r, 180, 270); + dc.DrawEllipticArc(x + 5*r, y, 2*r, r, 270, 360); +} + +void MyCanvas::DrawRegions(wxDC& dc) +{ + dc.DrawText("You should see a red rect partly covered by a cyan one " + "on the left", 10, 5); + dc.DrawText("and 5 smileys from which 4 are partially clipped on the " + "right (2 copies should be identical)", + 10, 5 + dc.GetCharHeight()); + + DrawRegionsHelper(dc, 10); + DrawRegionsHelper(dc, 350); +} + +void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x) +{ + dc.DestroyClippingRegion(); + dc.SetBrush( *wxWHITE_BRUSH ); + dc.SetPen( *wxTRANSPARENT_PEN ); + dc.DrawRectangle( x,50,310,310 ); + + dc.SetClippingRegion( x+10,60,100,270 ); + + dc.SetBrush( *wxRED_BRUSH ); + dc.DrawRectangle( x,50,310,310 ); + + dc.SetClippingRegion( x+10,60,100,100 ); + + dc.SetBrush( *wxCYAN_BRUSH ); + dc.DrawRectangle( x,50,310,310 ); + + // when drawing the left half, destroy the clipping region, when drawing + // the right one - leave it + // + // normally it shouldn't make any difference as SetClippingRegion() + // replaces the old clipping region + if ( x < 300 ) + dc.DestroyClippingRegion(); + dc.SetClippingRegion( x+110,70,100,270 ); + + dc.SetBrush( *wxGREY_BRUSH ); + dc.DrawRectangle( x,50,310,310 ); + + if (m_smile_bmp.Ok()) + { + dc.DrawBitmap( m_smile_bmp, x+150, 200, TRUE ); + dc.DrawBitmap( m_smile_bmp, x+130, 60, TRUE ); + dc.DrawBitmap( m_smile_bmp, x+130, 330, TRUE ); + dc.DrawBitmap( m_smile_bmp, x+100, 120, TRUE ); + dc.DrawBitmap( m_smile_bmp, x+200, 120, TRUE ); + } +} + +void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) +{ + wxPaintDC dc(this); + PrepareDC(dc); + + m_owner->PrepareDC(dc); + + dc.SetBackgroundMode( m_owner->m_backgroundMode ); + if ( m_owner->m_backgroundBrush.Ok() ) + dc.SetBackground( m_owner->m_backgroundBrush ); + if ( m_owner->m_colourForeground.Ok() ) + dc.SetTextForeground( m_owner->m_colourForeground ); + if ( m_owner->m_colourBackground.Ok() ) + dc.SetTextBackground( m_owner->m_colourBackground ); + + if ( m_owner->m_textureBackground) { + if ( ! m_owner->m_backgroundBrush.Ok() ) { + wxBrush b(wxColour(0,128,0), wxSOLID); + dc.SetBackground(b); + } + } + + dc.Clear(); + + if ( m_owner->m_textureBackground) { + dc.SetPen(*wxMEDIUM_GREY_PEN); + for (int i=0; i<200; i++) + dc.DrawLine(0, i*10, i*10, 0); + } + + switch ( m_show ) + { + case Show_Default: + DrawDefault(dc); + break; + + case Show_Circles: + DrawCircles(dc); + break; + + case Show_Regions: + DrawRegions(dc); + break; + + case Show_Text: + DrawText(dc); + break; + + case Show_Lines: + DrawTestLines( 0, 100, 0, dc ); + DrawTestLines( 0, 320, 1, dc ); + DrawTestLines( 0, 540, 2, dc ); + DrawTestLines( 0, 760, 6, dc ); + break; + + case Show_Brushes: + DrawTestBrushes(dc); + break; + + case Show_Polygons: + DrawTestPoly(dc); + break; + + case Show_Mask: + DrawImages(dc); + break; + + case Show_Ops: + DrawWithLogicalOps(dc); + break; + } +} + +void MyCanvas::OnMouseMove(wxMouseEvent &event) +{ + wxClientDC dc(this); + PrepareDC(dc); + m_owner->PrepareDC(dc); + + wxPoint pos = event.GetPosition(); + long x = dc.DeviceToLogicalX( pos.x ); + long y = dc.DeviceToLogicalY( pos.y ); + wxString str; + str.Printf( wxT("Current mouse position: %d,%d"), (int)x, (int)y ); + m_owner->SetStatusText( str ); +} + // ---------------------------------------------------------------------------- -// main frame +// MyFrame // ---------------------------------------------------------------------------- +// the event tables connect the wxWindows events with the functions (event +// handlers) which process them. It can be also done at run-time, but for the +// simple menu events like this the static method is much simpler. +BEGIN_EVENT_TABLE(MyFrame, wxFrame) + EVT_MENU (File_Quit, MyFrame::OnQuit) + EVT_MENU (File_About, MyFrame::OnAbout) + + EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow) + + EVT_MENU_RANGE(MenuOption_First, MenuOption_Last, MyFrame::OnOption) +END_EVENT_TABLE() + // frame constructor MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) - : wxFrame((wxFrame *)NULL, -1, title, pos, size) + : wxFrame((wxFrame *)NULL, -1, title, pos, size, + wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE) { // set the frame icon SetIcon(wxICON(mondrian)); wxMenu *menuFile = new wxMenu; - menuFile->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog"); + menuFile->Append(File_ShowDefault, "&Default screen\tF1"); + menuFile->Append(File_ShowText, "&Text screen\tF2"); + menuFile->Append(File_ShowLines, "&Lines screen\tF3"); + menuFile->Append(File_ShowBrushes, "&Brushes screen\tF4"); + menuFile->Append(File_ShowPolygons, "&Polygons screen\tF5"); + menuFile->Append(File_ShowMask, "&Mask screen\tF6"); + menuFile->Append(File_ShowOps, "&ROP screen\tF7"); + menuFile->Append(File_ShowRegions, "Re&gions screen\tF8"); + menuFile->Append(File_ShowCircles, "&Circles screen\tF9"); + menuFile->AppendSeparator(); + menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog"); menuFile->AppendSeparator(); - menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program"); - + 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, "Shrink 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->Append( AxisMirror_Horiz, "Mirror horizontally" ); - menuAxis->Append( AxisMirror_Vertic, "Mirror vertically" ); - + menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE ); + menuAxis->Append( AxisMirror_Vertic, "Mirror vertically\tCtrl-N", "", TRUE ); + 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" ); + wxMenu *menuColour = new wxMenu; + menuColour->Append( Colour_TextForeground, "Text foreground..." ); + menuColour->Append( Colour_TextBackground, "Text background..." ); + menuColour->Append( Colour_Background, "Background colour..." ); + menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE ); + menuColour->Append( Colour_TextureBackgound, "Draw textured background\tCtrl-T", "", TRUE); + // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; menuBar->Append(menuFile, "&File"); @@ -230,6 +1053,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) menuBar->Append(menuUserScale, "&UserScale"); menuBar->Append(menuAxis, "&Axis"); menuBar->Append(menuLogical, "&LogicalOrigin"); + menuBar->Append(menuColour, "&Colours"); // ... and attach this menu bar to the frame SetMenuBar(menuBar); @@ -237,14 +1061,22 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) // create a status bar just for fun (by default with 1 pane only) CreateStatusBar(2); SetStatusText("Welcome to wxWindows!"); - + 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 @@ -257,87 +1089,127 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { wxString msg; - msg.Printf( _T("This is the about dialog of the drawing sample.\n") - _T("Copyright (c) Robert Roebling 1999") + msg.Printf( wxT("This is the about dialog of the drawing sample.\n") + wxT("This sample tests various primitive drawing functions\n") + wxT("(without any attempts to prevent flicker).\n") + wxT("Copyright (c) Robert Roebling 1999") ); wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this); } -void MyFrame::OnOption(wxCommandEvent &event) +void MyFrame::OnShow(wxCommandEvent& event) +{ + m_canvas->Show((ScreenToShow)(event.GetId() - MenuShow_First)); +} + +void MyFrame::OnOption(wxCommandEvent& event) { - switch (event.GetInt()) + switch (event.GetId()) { case MapMode_Text: m_mapMode = wxMM_TEXT; - 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 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; + + 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; + 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.SetMapMode( m_mapMode ); + dc.SetUserScale( m_xUserScale, m_yUserScale ); + dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); + dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed ); } -void MyFrame::OnMouseMove(wxMouseEvent &event) +wxColour MyFrame::SelectColour() { - wxClientDC dc(this); - dc.SetMapMode( m_mapMode ); - dc.SetUserScale( m_xUserScale, m_yUserScale ); - dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin ); - - wxPoint pos = event.GetPosition(); - long x = dc.DeviceToLogicalX( pos.x ); - long y = dc.DeviceToLogicalY( pos.y ); - wxString str; - str.Printf( "Current mouse position: %d,%d", (int)x, (int)y ); - SetStatusText( str ); + wxColour col; + wxColourData data; + wxColourDialog dialog(this, &data); + + if ( dialog.ShowModal() == wxID_OK ) + { + col = dialog.GetColourData().GetColour(); + } + + return col; }