X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/213ad8e72cb6e838d15bf54145d661b081dca308..06a0d3eaaf180277be33e0d2c5542a9db281b0fb:/samples/drawing/drawing.cpp diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp index d135479395..5069eb5938 100644 --- a/samples/drawing/drawing.cpp +++ b/samples/drawing/drawing.cpp @@ -33,9 +33,15 @@ #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 @@ -43,28 +49,6 @@ #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, - Show_Splines, - Show_Gradient, - Show_Max -}; - // ---------------------------------------------------------------------------- // global variables // ---------------------------------------------------------------------------- @@ -114,6 +98,9 @@ public: void OnQuit(wxCommandEvent& event); void OnAbout(wxCommandEvent& event); void OnClip(wxCommandEvent& event); +#if wxUSE_GRAPHICS_CONTEXT + void OnGraphicContext(wxCommandEvent& event); +#endif void OnShow(wxCommandEvent &event); void OnOption(wxCommandEvent &event); @@ -124,7 +111,7 @@ public: int m_backgroundMode; int m_textureBackground; - int m_mapMode; + wxMappingMode m_mapMode; double m_xUserScale; double m_yUserScale; int m_xLogicalOrigin; @@ -149,19 +136,34 @@ public: void OnPaint(wxPaintEvent &event); void OnMouseMove(wxMouseEvent &event); + void OnMouseDown(wxMouseEvent &event); + void OnMouseUp(wxMouseEvent &event); - void ToShow(ScreenToShow show) { m_show = show; Refresh(); } + void ToShow(int show) { m_show = show; Refresh(); } // 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); + 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); @@ -173,10 +175,17 @@ protected: private: MyFrame *m_owner; - ScreenToShow m_show; + 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() }; @@ -199,14 +208,22 @@ enum 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, @@ -274,10 +291,14 @@ bool MyApp::LoadImages() gs_bmp36 = new wxBitmap; wxPathList pathList; - pathList.Add(_T(".")); - pathList.Add(_T("..")); - - wxString path = pathList.FindValidPath(_T("pat4.bmp")); + // 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(wxT(".")); + pathList.Add(wxT("..")); + pathList.Add(wxT("../..")); + + wxString path = pathList.FindValidPath(wxT("pat4.bmp")); if ( !path ) return false; @@ -288,21 +309,21 @@ bool MyApp::LoadImages() wxMask* mask4 = new wxMask(*gs_bmp4_mono, *wxBLACK); gs_bmp4_mono->SetMask(mask4); - path = pathList.FindValidPath(_T("pat36.bmp")); + path = pathList.FindValidPath(wxT("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")); + path = pathList.FindValidPath(wxT("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")); + path = pathList.FindValidPath(wxT("mask.bmp")); if ( !path ) return false; gs_bmpMask->LoadFile(path, wxBITMAP_TYPE_BMP); @@ -319,8 +340,11 @@ bool MyApp::LoadImages() // `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(_T("Drawing sample"), + MyFrame *frame = new MyFrame(wxT("Drawing sample"), wxPoint(50, 50), wxSize(550, 340)); // Show it and tell the application that it's our main window @@ -333,13 +357,10 @@ bool MyApp::OnInit() wxT("for this sample from the current or parent ") wxT("directory, please copy them there.")); - // stop here - DeleteBitmaps(); - - return false; + // still continue, the sample can be used without images too if they're + // missing for whatever reason } - // ok, continue return true; } @@ -371,6 +392,8 @@ void MyApp::DeleteBitmaps() 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" @@ -380,10 +403,14 @@ MyCanvas::MyCanvas(MyFrame *parent) wxHSCROLL | wxVSCROLL | wxNO_FULL_REPAINT_ON_RESIZE) { m_owner = parent; - m_show = Show_Default; + 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) @@ -396,22 +423,22 @@ void MyCanvas::DrawTestBrushes(wxDC& dc) dc.SetBrush(wxBrush(*wxGREEN, wxSOLID)); dc.DrawRectangle(x, y, WIDTH, HEIGHT); - dc.DrawText(_T("Solid green"), x + 10, y + 10); + dc.DrawText(wxT("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); + dc.DrawText(wxT("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); + dc.DrawText(wxT("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); + dc.DrawText(wxT("Stipple colour"), x + 10, y + 10); } void MyCanvas::DrawTestPoly(wxDC& dc) @@ -426,11 +453,11 @@ void MyCanvas::DrawTestPoly(wxDC& dc) 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.DrawText(wxT("You should see two (irregular) stars below, the left one ") + wxT("hatched"), 10, 10); + dc.DrawText(wxT("except for the central region and the right ") + wxT("one entirely hatched"), 10, 30); + dc.DrawText(wxT("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); @@ -458,7 +485,7 @@ void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc ) 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.DrawText(wxT("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) ); @@ -470,7 +497,7 @@ void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc ) 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.DrawText(wxT("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) ); @@ -484,7 +511,7 @@ void MyCanvas::DrawTestLines( int x, int y, int width, wxDC &dc ) 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); + dc.DrawText(wxT("User dash"), x + 150, y + 140); wxPen ud( wxT("black"), width, wxUSER_DASH ); wxDash dash1[6]; dash1[0] = 8; // Long dash <---------+ @@ -515,7 +542,7 @@ void MyCanvas::DrawDefault(wxDC& dc) // mark the origin dc.DrawCircle(0, 0, 10); -#if !wxMAC_USE_CORE_GRAPHICS +#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 @@ -721,8 +748,8 @@ 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 ); + dc.DrawText( wxT("This is text"), 110, 10 ); + dc.DrawRotatedText( wxT("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) @@ -739,12 +766,12 @@ void MyCanvas::DrawText(wxDC& dc) dc.SetFont( wxFont( 18, wxSWISS, wxNORMAL, wxNORMAL ) ); - dc.DrawText( _T("This is Swiss 18pt text."), 110, 40 ); + dc.DrawText( wxT("This is Swiss 18pt text."), 110, 40 ); - long length; - long height; - long descent; - dc.GetTextExtent( _T("This is Swiss 18pt text."), &length, &height, &descent ); + wxCoord length; + wxCoord height; + wxCoord descent; + dc.GetTextExtent( wxT("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 ); @@ -756,26 +783,26 @@ void MyCanvas::DrawText(wxDC& dc) // test the logical function effect wxCoord y = 150; dc.SetLogicalFunction(wxINVERT); - dc.DrawText( _T("There should be no text below"), 110, 150 ); + // text drawing should ignore logical function + dc.DrawText( wxT("There should be a text below"), 110, 150 ); dc.DrawRectangle( 110, y, 100, height ); - // twice drawn inverted should result in invisible y += height; - dc.DrawText( _T("Invisible text"), 110, y ); + dc.DrawText( wxT("Visible text"), 110, y ); dc.DrawRectangle( 110, y, 100, height ); - dc.DrawText( _T("Invisible text"), 110, y ); + dc.DrawText( wxT("Visible text"), 110, y ); dc.DrawRectangle( 110, y, 100, height ); dc.SetLogicalFunction(wxCOPY); y += height; dc.DrawRectangle( 110, y, 100, height ); - dc.DrawText( _T("Visible text"), 110, y ); + dc.DrawText( wxT("Another visible text"), 110, y ); } static const struct { const wxChar *name; - int rop; + wxRasterOperationMode rop; } rasterOperations[] = { { wxT("wxAND"), wxAND }, @@ -795,15 +822,15 @@ static const struct { wxT("wxXOR"), wxXOR }, }; -void MyCanvas::DrawImages(wxDC& dc) +void MyCanvas::DrawImages(wxDC& dc, DrawMode mode) { - dc.DrawText(_T("original image"), 0, 0); + dc.DrawText(wxT("original image"), 0, 0); dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0); - dc.DrawText(_T("with colour mask"), 0, 100); + dc.DrawText(wxT("with colour mask"), 0, 100); dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, true); - dc.DrawText(_T("the mask image"), 0, 200); + dc.DrawText(wxT("the mask image"), 0, 200); dc.DrawBitmap(*gs_bmpMask, 0, 220, 0); - dc.DrawText(_T("masked image"), 0, 300); + dc.DrawText(wxT("masked image"), 0, 300); dc.DrawBitmap(*gs_bmpWithMask, 0, 320, true); int cx = gs_bmpWithColMask->GetWidth(), @@ -817,7 +844,15 @@ void MyCanvas::DrawImages(wxDC& dc) 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); + 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); + } } } @@ -857,25 +892,191 @@ void MyCanvas::DrawWithLogicalOps(wxDC& dc) } } +#if wxUSE_GRAPHICS_CONTEXT +#ifdef __WXGTK20__ +void MyCanvas::DrawAlpha(wxDC& WXUNUSED(dummyDC)) +#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.DrawText(_T("Some circles"), 0, y); + dc.SetPen( *wxRED_PEN ); + dc.SetBrush( *wxGREEN_BRUSH ); + + dc.DrawText(wxT("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.DrawText(wxT("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.DrawText(wxT("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); @@ -885,12 +1086,42 @@ void MyCanvas::DrawCircles(wxDC& dc) 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(wxT("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(wxT("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(wxT("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); + dc.DrawText(wxT("Some splines"), 10, 5); // values are hardcoded rather than randomly generated // so the output can be compared between native @@ -971,48 +1202,97 @@ void MyCanvas::DrawSplines(wxDC& dc) } #else - dc.DrawText(_T("Splines not supported."), 10, 5); + dc.DrawText(wxT("Splines not supported."), 10, 5); #endif } void MyCanvas::DrawGradients(wxDC& dc) { + static const int TEXT_HEIGHT = 15; + // LHS: linear - wxRect r(10, 10, 100, 100); + wxRect r(10, 10, 50, 50); + dc.DrawText(wxT("wxRIGHT"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxRIGHT); - r.Offset(0, 110); + r.Offset(0, r.height + 10); + dc.DrawText(wxT("wxLEFT"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxLEFT); - r.Offset(0, 110); + r.Offset(0, r.height + 10); + dc.DrawText(wxT("wxDOWN"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxDOWN); - r.Offset(0, 110); + r.Offset(0, r.height + 10); + dc.DrawText(wxT("wxUP"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxUP); // RHS: concentric - r = wxRect(200, 10, 100, 100); + r = wxRect(200, 10, 50, 50); + dc.DrawText(wxT("Blue inside"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE); - r.Offset(0, 110); + r.Offset(0, r.height + 10); + dc.DrawText(wxT("White inside"), r.x, r.y); + r.Offset(0, TEXT_HEIGHT); dc.GradientFillConcentric(r, *wxWHITE, *wxBLUE); - r.Offset(0, 110); + r.Offset(0, r.height + 10); + dc.DrawText(wxT("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, 110); - dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE, wxPoint(100, 100)); + r.Offset(0, r.height + 10); + dc.DrawText(wxT("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"), + dc.DrawText(wxT("You should see a red rect partly covered by a cyan one ") + wxT("on the left"), 10, 5); + dc.DrawText(wxT("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."), + dc.DrawText(wxT("The second copy should be identical but right part of it ") + wxT("should be offset by 10 pixels."), 10, 5 + 2*dc.GetCharHeight()); DrawRegionsHelper(dc, 10, true); @@ -1041,11 +1321,11 @@ void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime) dc.DestroyClippingRegion(); wxRegion region(x + 110, y + 20, 100, 270); -#if !defined(__WXMOTIF__) && !defined(__WXMAC__) +#if !defined(__WXMOTIF__) if ( !firstTime ) region.Offset(10, 10); #endif - dc.SetClippingRegion(region); + dc.SetDeviceClippingRegion(region); dc.SetBrush( *wxGREY_BRUSH ); dc.DrawRectangle( x, y, 310, 310 ); @@ -1060,9 +1340,26 @@ void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime) } } +#if TEST_CAIRO_EVERYWHERE +extern wxGraphicsRenderer* gCairoRenderer; +#endif + void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) { - wxPaintDC dc(this); + 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); @@ -1097,73 +1394,151 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event)) switch ( m_show ) { - case Show_Default: + case File_ShowDefault: DrawDefault(dc); break; - case Show_Circles: + case File_ShowCircles: DrawCircles(dc); break; - case Show_Splines: + case File_ShowSplines: DrawSplines(dc); break; - case Show_Regions: + case File_ShowRegions: DrawRegions(dc); break; - case Show_Text: + case File_ShowText: DrawText(dc); break; - case Show_Lines: + 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 Show_Brushes: + case File_ShowBrushes: DrawTestBrushes(dc); break; - case Show_Polygons: + case File_ShowPolygons: DrawTestPoly(dc); break; - case Show_Mask: - DrawImages(dc); + case File_ShowMask: + DrawImages(dc, Draw_Normal); + break; + + case File_ShowMaskStretch: + DrawImages(dc, Draw_Stretch); break; - case Show_Ops: + case File_ShowOps: DrawWithLogicalOps(dc); break; - case Show_Gradient: +#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 ); + { + 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 // ---------------------------------------------------------------------------- @@ -1175,6 +1550,9 @@ 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) @@ -1190,76 +1568,86 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) SetIcon(wxICON(mondrian)); wxMenu *menuFile = new wxMenu; - 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_ShowOps, _T("&ROP screen\tF7")); - menuFile->Append(File_ShowRegions, _T("Re&gions screen\tF8")); - menuFile->Append(File_ShowCircles, _T("&Circles screen\tF9")); - menuFile->Append(File_ShowSplines, _T("&Splines screen\tF11")); - menuFile->Append(File_ShowGradients, _T("&Gradients screen\tF12")); + menuFile->Append(File_ShowDefault, wxT("&Default screen\tF1")); + menuFile->Append(File_ShowText, wxT("&Text screen\tF2")); + menuFile->Append(File_ShowLines, wxT("&Lines screen\tF3")); + menuFile->Append(File_ShowBrushes, wxT("&Brushes screen\tF4")); + menuFile->Append(File_ShowPolygons, wxT("&Polygons screen\tF5")); + menuFile->Append(File_ShowMask, wxT("&Mask screen\tF6")); + menuFile->Append(File_ShowMaskStretch, wxT("1/&2 scaled mask\tShift-F6")); + menuFile->Append(File_ShowOps, wxT("&Raster operations screen\tF7")); + menuFile->Append(File_ShowRegions, wxT("Re&gions screen\tF8")); + menuFile->Append(File_ShowCircles, wxT("&Circles screen\tF9")); +#if wxUSE_GRAPHICS_CONTEXT + menuFile->Append(File_ShowAlpha, wxT("&Alpha screen\tF10")); +#endif + menuFile->Append(File_ShowSplines, wxT("&Splines screen\tF11")); + menuFile->Append(File_ShowGradients, wxT("&Gradients screen\tF12")); +#if wxUSE_GRAPHICS_CONTEXT + menuFile->Append(File_ShowGraphics, wxT("&Graphics screen")); +#endif menuFile->AppendSeparator(); - menuFile->AppendCheckItem(File_Clip, _T("&Clip\tCtrl-C"), _T("Clip/unclip drawing")); + menuFile->AppendCheckItem(File_Clip, wxT("&Clip\tCtrl-C"), wxT("Clip/unclip drawing")); +#if wxUSE_GRAPHICS_CONTEXT + menuFile->AppendCheckItem(File_GraphicContext, wxT("&Use GraphicContext\tCtrl-Y"), wxT("Use GraphicContext")); +#endif menuFile->AppendSeparator(); - menuFile->Append(File_About, _T("&About...\tCtrl-A"), _T("Show about dialog")); + menuFile->Append(File_About, wxT("&About...\tCtrl-A"), wxT("Show about dialog")); menuFile->AppendSeparator(); - menuFile->Append(File_Quit, _T("E&xit\tAlt-X"), _T("Quit this program")); + menuFile->Append(File_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program")); wxMenu *menuMapMode = new wxMenu; - 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") ); + menuMapMode->Append( MapMode_Text, wxT("&TEXT map mode") ); + menuMapMode->Append( MapMode_Lometric, wxT("&LOMETRIC map mode") ); + menuMapMode->Append( MapMode_Twips, wxT("T&WIPS map mode") ); + menuMapMode->Append( MapMode_Points, wxT("&POINTS map mode") ); + menuMapMode->Append( MapMode_Metric, wxT("&METRIC map mode") ); wxMenu *menuUserScale = new wxMenu; - 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->Append( UserScale_StretchHoriz, wxT("Stretch &horizontally\tCtrl-H") ); + menuUserScale->Append( UserScale_ShrinkHoriz, wxT("Shrin&k horizontally\tCtrl-G") ); + menuUserScale->Append( UserScale_StretchVertic, wxT("Stretch &vertically\tCtrl-V") ); + menuUserScale->Append( UserScale_ShrinkVertic, wxT("&Shrink vertically\tCtrl-W") ); menuUserScale->AppendSeparator(); - menuUserScale->Append( UserScale_Restore, _T("&Restore to normal\tCtrl-0") ); + menuUserScale->Append( UserScale_Restore, wxT("&Restore to normal\tCtrl-0") ); wxMenu *menuAxis = new wxMenu; - menuAxis->AppendCheckItem( AxisMirror_Horiz, _T("Mirror horizontally\tCtrl-M") ); - menuAxis->AppendCheckItem( AxisMirror_Vertic, _T("Mirror vertically\tCtrl-N") ); + menuAxis->AppendCheckItem( AxisMirror_Horiz, wxT("Mirror horizontally\tCtrl-M") ); + menuAxis->AppendCheckItem( AxisMirror_Vertic, wxT("Mirror vertically\tCtrl-N") ); wxMenu *menuLogical = new wxMenu; - 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->Append( LogicalOrigin_MoveDown, wxT("Move &down\tCtrl-D") ); + menuLogical->Append( LogicalOrigin_MoveUp, wxT("Move &up\tCtrl-U") ); + menuLogical->Append( LogicalOrigin_MoveLeft, wxT("Move &right\tCtrl-L") ); + menuLogical->Append( LogicalOrigin_MoveRight, wxT("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") ); + menuLogical->Append( LogicalOrigin_Set, wxT("Set to (&100, 100)\tShift-Ctrl-1") ); + menuLogical->Append( LogicalOrigin_Restore, wxT("&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...") ); + menuColour->Append( Colour_TextForeground, wxT("Text &foreground...") ); + menuColour->Append( Colour_TextBackground, wxT("Text &background...") ); + menuColour->Append( Colour_Background, wxT("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") ); + menuColour->AppendCheckItem( Colour_BackgroundMode, wxT("&Opaque/transparent\tCtrl-B") ); + menuColour->AppendCheckItem( Colour_TextureBackgound, wxT("Draw textured back&ground\tCtrl-T") ); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; - 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")); + menuBar->Append(menuFile, wxT("&File")); + menuBar->Append(menuMapMode, wxT("&Mode")); + menuBar->Append(menuUserScale, wxT("&Scale")); + menuBar->Append(menuAxis, wxT("&Axis")); + menuBar->Append(menuLogical, wxT("&Origin")); + menuBar->Append(menuColour, wxT("&Colours")); // ... and attach this menu bar to the frame SetMenuBar(menuBar); #if wxUSE_STATUSBAR CreateStatusBar(2); - SetStatusText(_T("Welcome to wxWidgets!")); + SetStatusText(wxT("Welcome to wxWidgets!")); #endif // wxUSE_STATUSBAR m_mapMode = wxMM_TEXT; @@ -1295,7 +1683,7 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) wxT("Copyright (c) Robert Roebling 1999") ); - wxMessageBox(msg, _T("About Drawing"), wxOK | wxICON_INFORMATION, this); + wxMessageBox(msg, wxT("About Drawing"), wxOK | wxICON_INFORMATION, this); } void MyFrame::OnClip(wxCommandEvent& event) @@ -1303,9 +1691,16 @@ void MyFrame::OnClip(wxCommandEvent& event) 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((ScreenToShow)(event.GetId() - MenuShow_First)); + m_canvas->ToShow(event.GetId()); } void MyFrame::OnOption(wxCommandEvent& event)