/////////////////////////////////////////////////////////////////////////////
-// Name: drawing.cpp
+// Name: samples/drawing/drawing.cpp
// Purpose: shows and tests wxDC features
// Author: Robert Roebling
// Modified by:
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation "drawing.cpp"
- #pragma interface "drawing.cpp"
-#endif
-
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#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"
+#include "wx/metafile.h"
+
+#define TEST_CAIRO_EVERYWHERE 0
// ----------------------------------------------------------------------------
-// ressources
+// resources
// ----------------------------------------------------------------------------
// the application icon
-#if defined(__WXGTK__) || defined(__WXMOTIF__)
- #include "mondrian.xpm"
+#ifndef wxHAS_IMAGES_IN_RESOURCES
+ #include "../sample.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_Polygons,
- Show_Mask,
- Show_Ops
-};
-
// ----------------------------------------------------------------------------
// global variables
// ----------------------------------------------------------------------------
-static wxBitmap gs_bmpNoMask,
- gs_bmpWithColMask,
- gs_bmpMask,
- gs_bmpWithMask,
- gs_bmp4,
- gs_bmp36;
+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
// return: if OnInit() returns false, the application terminates)
virtual bool OnInit();
+ virtual int OnExit() { DeleteBitmaps(); return 0; }
+
protected:
+ void DeleteBitmaps();
+
bool LoadImages();
};
// event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
+ void OnClip(wxCommandEvent& event);
+#if wxUSE_GRAPHICS_CONTEXT
+ void OnGraphicContext(wxCommandEvent& event);
+#endif
+ void OnCopy(wxCommandEvent& event);
+ void OnSave(wxCommandEvent& event);
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;
- int m_mapMode;
+ wxMappingMode m_mapMode;
double m_xUserScale;
double m_yUserScale;
int m_xLogicalOrigin;
MyCanvas *m_canvas;
private:
- // any class wishing to process wxWindows events must use this macro
+ // any class wishing to process wxWidgets events must use this macro
DECLARE_EVENT_TABLE()
};
void OnPaint(wxPaintEvent &event);
void OnMouseMove(wxMouseEvent &event);
+ void OnMouseDown(wxMouseEvent &event);
+ void OnMouseUp(wxMouseEvent &event);
- void Show(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
+ void Draw(wxDC& dc);
protected:
- void DrawTestPoly( int x, int y, wxDC &dc ,int transparent );
+ 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);
void DrawDefault(wxDC& dc);
+ void DrawGradients(wxDC& dc);
+
+ void DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime);
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()
};
enum
{
// menu items
- File_Quit = 1,
- File_About,
+ File_Quit = wxID_EXIT,
+ File_About = wxID_ABOUT,
- MenuShow_First,
+ MenuShow_First = wxID_HIGHEST,
File_ShowDefault = MenuShow_First,
File_ShowText,
File_ShowLines,
+ File_ShowBrushes,
File_ShowPolygons,
File_ShowMask,
+ File_ShowMaskStretch,
File_ShowOps,
- MenuShow_Last = 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
+ File_Copy,
+ File_Save,
MenuOption_First,
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,
};
// ----------------------------------------------------------------------------
-// event tables and other macros for wxWindows
+// event tables and other macros for wxWidgets
// ----------------------------------------------------------------------------
-// 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
bool MyApp::LoadImages()
{
- wxPathList pathList;
- pathList.Add(".");
- pathList.Add("..");
+ 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;
- wxString path = pathList.FindValidPath("pat4.bmp");
+ 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(wxT("."));
+ pathList.Add(wxT(".."));
+ pathList.Add(wxT("../.."));
+
+ wxString path = pathList.FindValidPath(wxT("pat4.bmp"));
if ( !path )
- return FALSE;
- gs_bmp4.LoadFile(path, wxBITMAP_TYPE_BMP);
- wxMask* mask4 = new wxMask(gs_bmp4, *wxBLACK);
- gs_bmp4.SetMask(mask4);
+ return false;
- 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);
+ /* 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("image.bmp");
+ path = pathList.FindValidPath(wxT("pat36.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);
+ return false;
+ gs_bmp36->LoadFile(path, wxBITMAP_TYPE_BMP);
+ wxMask* mask36 = new wxMask(*gs_bmp36, *wxBLACK);
+ gs_bmp36->SetMask(mask36);
- path = pathList.FindValidPath("mask.bmp");
+ path = pathList.FindValidPath(wxT("image.bmp"));
if ( !path )
- return FALSE;
- gs_bmpMask.LoadFile(path, wxBITMAP_TYPE_BMP);
+ return false;
+ gs_bmpNoMask->LoadFile(path, wxBITMAP_TYPE_BMP);
+ gs_bmpWithMask->LoadFile(path, wxBITMAP_TYPE_BMP);
+ gs_bmpWithColMask->LoadFile(path, wxBITMAP_TYPE_BMP);
-// This is so wrong, it hurts.
-// gs_bmpMask.SetDepth(1);
-// wxMask *mask = new wxMask(gs_bmpMask);
+ path = pathList.FindValidPath(wxT("mask.bmp"));
+ if ( !path )
+ return false;
+ gs_bmpMask->LoadFile(path, wxBITMAP_TYPE_BMP);
- wxMask *mask = new wxMask(gs_bmpMask, *wxBLACK);
- gs_bmpWithMask.SetMask(mask);
+ wxMask *mask = new wxMask(*gs_bmpMask, *wxBLACK);
+ gs_bmpWithMask->SetMask(mask);
- mask = new wxMask(gs_bmpWithColMask, *wxWHITE);
- gs_bmpWithColMask.SetMask(mask);
+ mask = new wxMask(*gs_bmpWithColMask, *wxWHITE);
+ gs_bmpWithColMask->SetMask(mask);
- return TRUE;
+ 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(550, 340));
+ MyFrame *frame = new MyFrame(wxT("Drawing sample"),
+ wxDefaultPosition, wxSize(550, 840));
- // Show it and tell the application that it's our main window
- frame->Show(TRUE);
- SetTopWindow(frame);
+ // Show it
+ frame->Show(true);
if ( !LoadImages() )
{
- wxLogError("Can't load one of the bitmap files needed for this sample "
- "from the current or parent directory, please copy them "
- "there.");
+ 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
- return FALSE;
+ // still continue, the sample can be used without images too if they're
+ // missing for whatever reason
}
+#if wxUSE_LIBPNG
+ wxImage::AddHandler( new wxPNGHandler );
+#endif
+
+ return true;
+}
- // ok, continue
- return TRUE;
+void MyApp::DeleteBitmaps()
+{
+ wxDELETE(gs_bmpNoMask);
+ wxDELETE(gs_bmpWithColMask);
+ wxDELETE(gs_bmpMask);
+ wxDELETE(gs_bmpWithMask);
+ wxDELETE(gs_bmp4);
+ wxDELETE(gs_bmp4_mono);
+ wxDELETE(gs_bmp36);
}
// ----------------------------------------------------------------------------
// MyCanvas
// ----------------------------------------------------------------------------
-// the event tables connect the wxWindows events with the functions (event
+// 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()
-MyCanvas::MyCanvas( MyFrame *parent ) : wxScrolledWindow( parent )
+#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 = 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
}
-//draw a polygon and an overlapping rectangle
-//is transparent is 1, the fill pattern are made transparent
-//is transparent is 2, the fill pattern are made transparent but inversed
-//is transparent is 0 the text for and background color will be used to represent/map
-//the colors of the monochrome bitmap pixels to the fillpattern
-//
-//i miss_used the the menu items for setting so called back and fore ground color
-//just to show how the those colors do influence the fillpatterns
-//just play with those,
-//and with the code
-//variations are endless using other logical functions
-void MyCanvas::DrawTestPoly( int x, int y,wxDC &dc,int transparent )
+void MyCanvas::DrawTestBrushes(wxDC& dc)
{
- wxBrush* brush4 = new wxBrush(gs_bmp4);
- wxBrush* brush36 = new wxBrush(gs_bmp36);
-
- wxPoint todraw[5];
- todraw[0].x=(long)x+100;
- todraw[0].y=(long)y+100;
- todraw[1].x=(long)x+300;
- todraw[1].y=(long)y+100;
- todraw[2].x=(long)x+300;
- todraw[2].y=(long)y+300;
- todraw[3].x=(long)x+150;
- todraw[3].y=(long)y+350;
- todraw[4].x=(long)x+100;
- todraw[4].y=(long)y+300;
-
- wxPoint todraw2[5];
- todraw2[0].x=100;
- todraw2[0].y=100;
- todraw2[1].x=300;
- todraw2[1].y=100;
- todraw2[2].x=300;
- todraw2[2].y=300;
- todraw2[3].x=150;
- todraw2[3].y=350;
- todraw2[4].x=100;
- todraw2[4].y=300;
-
- switch (transparent)
- {
- case 0:
- {
- dc.SetPen( wxPen( "black", 4, wxSOLID) );
- dc.SetBrush( *brush4 );
- dc.SetTextForeground(*wxGREEN);
- dc.SetTextBackground(m_owner->m_colourForeground);
- dc.SetLogicalFunction(wxCOPY);
- dc.DrawPolygon(5,todraw,0,0,wxWINDING_RULE);
-
- //don't understand hwo but the outline is also depending on logicalfunction
- dc.SetPen( wxPen( "red", 4, wxSOLID) );
- dc.SetBrush( *brush36 );
- dc.SetTextForeground(*wxCYAN);
- dc.SetTextBackground(m_owner->m_colourBackground);
- dc.SetLogicalFunction(wxCOPY);
- dc.DrawRectangle( x+10, y+10, 200, 200 );
- dc.SetBrush(wxNullBrush);
- dc.SetPen(wxNullPen);
- break;
- }
- case 1: //now with transparent fillpatterns
- {
-
- wxBitmap* bmpBlit = new wxBitmap(600,400);
- wxMemoryDC* memDC= new wxMemoryDC();
- // wxBrush _clearbrush(*wxGREEN,wxSOLID);
- wxBrush _clearbrush(*wxBLACK,wxSOLID);
- memDC->SelectObject(*bmpBlit);
- memDC->BeginDrawing();
- memDC->SetBackground(_clearbrush);
- memDC->Clear();
- memDC->SetBackground(wxNullBrush);
-
- memDC->SetPen( wxPen( "black", 4, wxSOLID) );
- memDC->SetBrush( wxNullBrush);
- memDC->SetBrush( *brush4 );
- memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
- memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
- memDC->SetLogicalFunction(wxAND_INVERT);
-
- // BLACK OUT the opaque pixels and leave the rest as is
- memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
-
- // Set background and foreground colors for fill pattern
- //the previous blacked out pixels are now merged with the layer color
- //while the non blacked out pixels stay as they are.
- memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
-
- //now define what will be the color of the fillpattern parts that are not transparent
- // memDC->SetTextBackground(*wxBLUE);
- memDC->SetTextBackground(m_owner->m_colourForeground);
- memDC->SetLogicalFunction(wxOR);
-
-
- //don't understand how but the outline is also depending on logicalfunction
- memDC->SetPen( wxPen( "red", 4, wxSOLID) );
- memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
-
- memDC->SetLogicalFunction(wxCOPY);
-
- memDC->SetPen( wxPen( "black", 4, wxSOLID) );
- memDC->SetBrush( wxNullBrush);
- memDC->SetBrush( *brush36 );
- memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
- memDC->SetTextBackground(*wxWHITE); // 1s --> 0xFFFFFF (white)
- memDC->SetLogicalFunction(wxAND_INVERT);
-
- memDC->DrawRectangle( 10, 10, 200, 200 );
-
- // Set background and foreground colors for fill pattern
- //the previous blacked out pixels are now merged with the layer color
- //while the non blacked out pixels stay as they are.
- memDC->SetTextForeground(*wxBLACK); // 0s --> 0x000000 (black)
- //now define what will be the color of the fillpattern parts that are not transparent
- // memDC->SetTextBackground(*wxRED);
- memDC->SetTextBackground(m_owner->m_colourBackground);
- memDC->SetLogicalFunction(wxOR);
-
- //don't understand how but the outline is also depending on logicalfunction
- memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
- memDC->DrawRectangle( 10, 10, 200, 200 );
-
- memDC->SetBrush(wxNullBrush);
- memDC->SetPen(wxNullPen);
-
- memDC->EndDrawing();
- dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
- delete bmpBlit;
- delete memDC;
- break;
- }
- case 2: //now with transparent inversed fillpatterns
- {
- wxBitmap* bmpBlit = new wxBitmap(600,400);
- wxMemoryDC* memDC= new wxMemoryDC();
- wxBrush _clearbrush(*wxWHITE,wxSOLID);
- memDC->SelectObject(*bmpBlit);
- memDC->BeginDrawing();
- memDC->SetBackground(_clearbrush);
- memDC->Clear();
- memDC->SetBackground(wxNullBrush);
-
- memDC->SetPen( wxPen( "black", 4, wxSOLID) );
- memDC->SetBrush( *brush4 );
- memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
- memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
- memDC->SetLogicalFunction(wxAND_INVERT);
-
- // BLACK OUT the opaque pixels and leave the rest as is
- memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
-
- // Set background and foreground colors for fill pattern
- //the previous blacked out pixels are now merged with the layer color
- //while the non blacked out pixels stay as they are.
- memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
-
- //now define what will be the color of the fillpattern parts that are not transparent
- memDC->SetTextForeground(m_owner->m_colourForeground);
- memDC->SetLogicalFunction(wxOR);
-
-
- //don't understand how but the outline is also depending on logicalfunction
- memDC->SetPen( wxPen( "red", 4, wxSOLID) );
- memDC->DrawPolygon(5,todraw2,0,0,wxWINDING_RULE);
-
- memDC->SetLogicalFunction(wxCOPY);
-
- memDC->SetPen( wxPen( "black", 4, wxSOLID) );
- memDC->SetBrush( *brush36 );
- memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
- memDC->SetTextForeground(*wxWHITE); // 1s --> 0xFFFFFF (white)
- memDC->SetLogicalFunction(wxAND_INVERT);
-
- memDC->DrawRectangle( 10,10, 200, 200 );
-
- // Set background and foreground colors for fill pattern
- //the previous blacked out pixels are now merged with the layer color
- //while the non blacked out pixels stay as they are.
- memDC->SetTextBackground(*wxBLACK); // 0s --> 0x000000 (black)
- //now define what will be the color of the fillpattern parts that are not transparent
- memDC->SetTextForeground(m_owner->m_colourBackground);
- memDC->SetLogicalFunction(wxOR);
-
- //don't understand how but the outline is also depending on logicalfunction
- memDC->SetPen( wxPen( "yellow", 4, wxSOLID) );
- memDC->DrawRectangle( 10, 10, 200, 200 );
-
- memDC->SetBrush(wxNullBrush);
- memDC->SetPen(wxNullPen);
- dc.Blit(x,y,600,400,memDC,0,0,wxCOPY);
- delete bmpBlit;
- delete memDC;
- }
- }
+ 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(wxT("Solid green"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxRED, wxCROSSDIAG_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Diagonally hatched red"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxBLUE, wxCROSS_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Cross hatched blue"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxCYAN, wxVERTICAL_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Vertically hatched cyan"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*wxBLACK, wxHORIZONTAL_HATCH));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Horizontally hatched black"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*gs_bmpMask));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Stipple mono"), x + 10, y + 10);
+
+ y += HEIGHT;
+ dc.SetBrush(wxBrush(*gs_bmpNoMask));
+ dc.DrawRectangle(x, y, WIDTH, HEIGHT);
+ dc.DrawText(wxT("Stipple colour"), x + 10, y + 10);
+}
- delete brush4;
- delete brush36;
+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(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);
+
+ 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( "black", width, wxSOLID) );
+ 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.SetPen( wxPen( "black", width, wxSOLID) );
+ 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( "black", width, wxDOT) );
+ dc.SetPen( wxPen( wxT("black"), width, wxDOT) );
dc.DrawLine( x+20, y+30, 100, y+30 );
- dc.SetPen( wxPen( "black", width, wxSHORT_DASH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxSHORT_DASH) );
dc.DrawLine( x+20, y+40, 100, y+40 );
- dc.SetPen( wxPen( "black", width, wxLONG_DASH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxLONG_DASH) );
dc.DrawLine( x+20, y+50, 100, y+50 );
- dc.SetPen( wxPen( "black", width, wxDOT_DASH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxDOT_DASH) );
dc.DrawLine( x+20, y+60, 100, y+60 );
- dc.SetPen( wxPen( "black", width, wxBDIAGONAL_HATCH) );
+ 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( "black", width, wxCROSSDIAG_HATCH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxCROSSDIAG_HATCH) );
dc.DrawLine( x+20, y+80, 100, y+80 );
- dc.SetPen( wxPen( "black", width, wxFDIAGONAL_HATCH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxFDIAGONAL_HATCH) );
dc.DrawLine( x+20, y+90, 100, y+90 );
- dc.SetPen( wxPen( "black", width, wxCROSS_HATCH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxCROSS_HATCH) );
dc.DrawLine( x+20, y+100, 100, y+100 );
- dc.SetPen( wxPen( "black", width, wxHORIZONTAL_HATCH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxHORIZONTAL_HATCH) );
dc.DrawLine( x+20, y+110, 100, y+110 );
- dc.SetPen( wxPen( "black", width, wxVERTICAL_HATCH) );
+ dc.SetPen( wxPen( wxT("black"), width, wxVERTICAL_HATCH) );
dc.DrawLine( x+20, y+120, 100, y+120 );
- wxPen ud( "black", width, wxUSER_DASH );
- wxDash dash1[1];
- dash1[0] = 0;
- ud.SetDashes( 1, dash1 );
+ dc.DrawText(wxT("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] = 1;
- ud.SetDashes( 1, dash1 );
+ dash1[0] = 5; // Make first dash shorter
+ ud.SetDashes( 6, dash1 );
+ dc.SetPen( ud );
dc.DrawLine( x+20, y+150, 100, y+150 );
- dash1[0] = 2;
- ud.SetDashes( 1, dash1 );
+ dash1[2] = 5; // Make second dash longer
+ ud.SetDashes( 6, dash1 );
+ dc.SetPen( ud );
dc.DrawLine( x+20, y+160, 100, y+160 );
- dash1[0] = 0xFF;
- ud.SetDashes( 1, dash1 );
+ 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 __WXGTK__) && !(defined __WXMOTIF__)
- // not implemented in wxGTK or wxMOTIF :-(
- dc.FloodFill(0, 0, wxColour(255, 0, 0));
-#endif //
+ // Draw circle centered at the origin, then flood fill it with a different
+ // color. Done with a wxMemoryDC because Blit (used by generic
+ // wxDoFloodFill) from a window that is being painted gives unpredictable
+ // results on wxGTK
+ {
+ wxImage img(21, 21, false);
+ img.Clear(1);
+ wxBitmap bmp(img);
+ {
+ wxMemoryDC mdc(bmp);
+ mdc.SetBrush(dc.GetBrush());
+ mdc.SetPen(dc.GetPen());
+ mdc.DrawCircle(10, 10, 10);
+ wxColour c;
+ if (mdc.GetPixel(11, 11, &c))
+ {
+ mdc.SetBrush(wxColour(128, 128, 0));
+ mdc.FloodFill(11, 11, c, wxFLOOD_SURFACE);
+ }
+ }
+ bmp.SetMask(new wxMask(bmp, wxColour(1, 1, 1)));
+ dc.DrawBitmap(bmp, -10, -10, true);
+ }
- dc.DrawIcon( wxICON(mondrian), 40, 40 );
+ 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
+ // 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(100, 10, 40, 40);
- dc.DrawBitmap(wxTheApp->GetStdIcon(wxICON_INFORMATION), 102, 12, TRUE);
- dc.DrawRectangle(150, 10, 40, 40);
- dc.DrawIcon(wxTheApp->GetStdIcon(wxICON_INFORMATION), 152, 12);
- dc.DrawRectangle(200, 10, 40, 40);
+ 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 );
- #include "../image/smile.xpm"
- wxBitmap bmp(smile_xpm);
- dc.DrawBitmap(bmp, 210, 30, TRUE);
+
+ if (m_smile_bmp.IsOk())
+ dc.DrawBitmap(m_smile_bmp, x + rectSize - 20, rectSize - 10, true);
dc.SetBrush( *wxBLACK_BRUSH );
dc.DrawRectangle( 0, 160, 1000, 300 );
// to the right
wxPen pen = *wxRED_PEN;
- pen.SetWidth(2);
memdc.SetPen(pen);
memdc.DrawLine( 10, 5,10, 5 );
memdc.DrawLine( 10,10,11,10 );
memdc.SelectObject( wxNullBitmap );
dc.DrawBitmap( bitmap, 10, 170 );
- wxImage image( bitmap );
+ wxImage image = bitmap.ConvertToImage();
image.Rescale( 60,210 );
- bitmap = image.ConvertToBitmap();
+ bitmap = wxBitmap(image);
dc.DrawBitmap( bitmap, 50, 170 );
// test the rectangle outline drawing - there should be one pixel between
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.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( "This is text", 110, 10 );
- dc.DrawRotatedText( "That is text", 20, 10, -45 );
+ dc.SetFont( wxFont(12, wxMODERN, wxNORMAL, wxNORMAL, true) );
+ dc.DrawText( wxT("This is text"), 110, 10 );
+ dc.DrawRotatedText( wxT("That is text"), 20, 10, -45 );
- dc.SetFont( *wxNORMAL_FONT );
+ // 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);
+ dc.SetBackgroundMode(wxTRANSPARENT);
for ( int n = -180; n < 180; n += 30 )
{
- text.Printf(" %d rotated text", n);
+ 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 );
+ dc.DrawText( wxT("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( "Dimensions are length %ld, height %ld, descent %ld", 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 %d, height %d, descent %d"), length, height, descent );
dc.DrawText( text, 110, 80 );
- text.Printf( "CharHeight() returns: %d", dc.GetCharHeight() );
+ 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( wxT("There should be a text below"), 110, 150 );
+ dc.DrawRectangle( 110, y, 100, height );
+
+ y += height;
+ dc.DrawText( wxT("Visible text"), 110, y );
+ dc.DrawRectangle( 110, y, 100, height );
+ 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( wxT("Another visible text"), 110, y );
+
+ y += height;
+ dc.DrawText("And\nmore\ntext on\nmultiple\nlines", 110, y);
}
static const struct
{
const wxChar *name;
- int rop;
+ wxRasterOperationMode rop;
} rasterOperations[] =
{
- { "wxAND", wxAND },
- { "wxAND_INVERT", wxAND_INVERT },
- { "wxAND_REVERSE", wxAND_REVERSE },
- { "wxCLEAR", wxCLEAR },
- { "wxCOPY", wxCOPY },
- { "wxEQUIV", wxEQUIV },
- { "wxINVERT", wxINVERT },
- { "wxNAND", wxNAND },
- { "wxNO_OP", wxNO_OP },
- { "wxOR", wxOR },
- { "wxOR_INVERT", wxOR_INVERT },
- { "wxOR_REVERSE", wxOR_REVERSE },
- { "wxSET", wxSET },
- { "wxSRC_INVERT", wxSRC_INVERT },
- { "wxXOR", wxXOR },
+ { 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)
+void MyCanvas::DrawImages(wxDC& dc, DrawMode mode)
{
- dc.DrawText("original image", 0, 0);
- dc.DrawBitmap(gs_bmpNoMask, 0, 20, 0);
- dc.DrawText("with colour mask", 0, 100);
- dc.DrawBitmap(gs_bmpWithColMask, 0, 120, TRUE);
- dc.DrawText("the mask image", 0, 200);
- dc.DrawBitmap(gs_bmpMask, 0, 220, 0);
- dc.DrawText("masked image", 0, 300);
- dc.DrawBitmap(gs_bmpWithMask, 0, 320, TRUE);
-
- int cx = gs_bmpWithColMask.GetWidth(),
- cy = gs_bmpWithColMask.GetHeight();
+ dc.DrawText(wxT("original image"), 0, 0);
+ dc.DrawBitmap(*gs_bmpNoMask, 0, 20, 0);
+ dc.DrawText(wxT("with colour mask"), 0, 100);
+ dc.DrawBitmap(*gs_bmpWithColMask, 0, 120, true);
+ dc.DrawText(wxT("the mask image"), 0, 200);
+ dc.DrawBitmap(*gs_bmpMask, 0, 220, 0);
+ dc.DrawText(wxT("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++ )
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);
+ 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);
+ }
}
}
dc.SetPen(wxPen(m_owner->m_colourForeground, 1, wxSOLID));
dc.SetBrush(*wxTRANSPARENT_BRUSH);
- for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ )
+ size_t n;
+ for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
{
wxCoord x = 20 + 150*(n%4),
y = 20 + 100*(n/4);
// now some filled rectangles
dc.SetBrush(wxBrush(m_owner->m_colourForeground, wxSOLID));
- for ( size_t n = 0; n < WXSIZEOF(rasterOperations); n++ )
+ for ( n = 0; n < WXSIZEOF(rasterOperations); n++ )
{
wxCoord x = 20 + 150*(n%4),
y = 500 + 100*(n/4);
}
}
+#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();
+
+ gc->PushState();
+ gc->Translate(60, 400);
+ gc->DrawText("Scaled smiley inside a square", 0, 0);
+ gc->DrawRectangle(BASE2, BASE2, 100, 100);
+ gc->DrawBitmap(m_smile_bmp, BASE2, BASE2, 100, 100);
+ gc->PopState();
+}
+#endif // wxUSE_GRAPHICS_CONTEXT
+
+void MyCanvas::DrawCircles(wxDC& dc)
+{
+ int x = 100,
+ y = 100,
+ r = 20;
+
+ dc.SetPen( *wxRED_PEN );
+ dc.SetBrush( *wxGREEN_BRUSH );
+
+ dc.DrawText(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);
+
+ // 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(wxT("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(wxT("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(wxT("wxRIGHT"), r.x, r.y);
+ r.Offset(0, TEXT_HEIGHT);
+ dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxRIGHT);
+
+ 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, 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, r.height + 10);
+ dc.DrawText(wxT("wxUP"), r.x, r.y);
+ r.Offset(0, TEXT_HEIGHT);
+ dc.GradientFillLinear(r, *wxWHITE, *wxBLUE, wxUP);
+
+ wxRect gfr = wxRect(r);
+
+ // RHS: concentric
+ r = wxRect(200, 10, 50, 50);
+ dc.DrawText(wxT("Blue inside"), r.x, r.y);
+ r.Offset(0, TEXT_HEIGHT);
+ dc.GradientFillConcentric(r, *wxBLUE, *wxWHITE);
+
+ 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, 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, 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);
+
+#if wxUSE_GRAPHICS_CONTEXT
+ if (m_useContext)
+ {
+ wxGCDC &gdc = (wxGCDC&)dc;
+ wxGraphicsContext *gc = gdc.GetGraphicsContext();
+ wxGraphicsPath pth;
+ wxGraphicsGradientStops stops;
+
+ gfr.Offset(0, gfr.height + 10);
+ dc.DrawText(wxT("Linear Gradient with Stops"), gfr.x, gfr.y);
+ gfr.Offset(0, TEXT_HEIGHT);
+
+ stops = wxGraphicsGradientStops(wxColour(255,0,0), wxColour(0,0,255));
+ stops.Add(wxColour(255,255,0), 0.33f);
+ stops.Add(wxColour(0,255,0), 0.67f);
+
+ gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y,
+ gfr.x + gfr.width, gfr.y + gfr.height,
+ stops));
+ pth = gc->CreatePath();
+ pth.MoveToPoint(gfr.x,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+ pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+ pth.CloseSubpath();
+ gc->FillPath(pth);
+
+ gfr.Offset(0, gfr.height + 10);
+ dc.DrawText(wxT("Radial Gradient with Stops"), gfr.x, gfr.y);
+ gfr.Offset(0, TEXT_HEIGHT);
+
+ gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2,
+ gfr.y + gfr.height / 2,
+ gfr.x + gfr.width / 2,
+ gfr.y + gfr.height / 2,
+ gfr.width / 2,
+ stops));
+ pth = gc->CreatePath();
+ pth.MoveToPoint(gfr.x,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+ pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+ pth.CloseSubpath();
+ gc->FillPath(pth);
+
+ gfr.Offset(0, gfr.height + 10);
+ dc.DrawText(wxT("Linear Gradient with Stops and Gaps"), gfr.x, gfr.y);
+ gfr.Offset(0, TEXT_HEIGHT);
+
+ stops = wxGraphicsGradientStops(wxColour(255,0,0), wxColour(0,0,255));
+ stops.Add(wxColour(255,255,0), 0.33f);
+ stops.Add(wxTransparentColour, 0.33f);
+ stops.Add(wxTransparentColour, 0.67f);
+ stops.Add(wxColour(0,255,0), 0.67f);
+
+ gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y + gfr.height,
+ gfr.x + gfr.width, gfr.y,
+ stops));
+ pth = gc->CreatePath();
+ pth.MoveToPoint(gfr.x,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+ pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+ pth.CloseSubpath();
+ gc->FillPath(pth);
+
+ gfr.Offset(0, gfr.height + 10);
+ dc.DrawText(wxT("Radial Gradient with Stops and Gaps"), gfr.x, gfr.y);
+ gfr.Offset(0, TEXT_HEIGHT);
+
+ gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2,
+ gfr.y + gfr.height / 2,
+ gfr.x + gfr.width / 2,
+ gfr.y + gfr.height / 2,
+ gfr.width / 2,
+ stops));
+ pth = gc->CreatePath();
+ pth.MoveToPoint(gfr.x,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+ pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+ pth.CloseSubpath();
+ gc->FillPath(pth);
+
+ gfr.Offset(0, gfr.height + 10);
+ dc.DrawText(wxT("Gradients with Stops and Transparency"), gfr.x, gfr.y);
+ gfr.Offset(0, TEXT_HEIGHT);
+
+ stops = wxGraphicsGradientStops(wxColour(255,0,0), wxTransparentColour);
+ stops.Add(wxColour(255,0,0), 0.33f);
+ stops.Add(wxTransparentColour, 0.33f);
+ stops.Add(wxTransparentColour, 0.67f);
+ stops.Add(wxColour(0,0,255), 0.67f);
+ stops.Add(wxColour(0,0,255), 1.0f);
+
+ pth = gc->CreatePath();
+ pth.MoveToPoint(gfr.x,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y);
+ pth.AddLineToPoint(gfr.x + gfr.width,gfr.y+gfr.height);
+ pth.AddLineToPoint(gfr.x,gfr.y+gfr.height);
+ pth.CloseSubpath();
+
+ gc->SetBrush(gc->CreateRadialGradientBrush(gfr.x + gfr.width / 2,
+ gfr.y + gfr.height / 2,
+ gfr.x + gfr.width / 2,
+ gfr.y + gfr.height / 2,
+ gfr.width / 2,
+ stops));
+ gc->FillPath(pth);
+
+ stops = wxGraphicsGradientStops(wxColour(255,0,0, 128), wxColour(0,0,255, 128));
+ stops.Add(wxColour(255,255,0,128), 0.33f);
+ stops.Add(wxColour(0,255,0,128), 0.67f);
+
+ gc->SetBrush(gc->CreateLinearGradientBrush(gfr.x, gfr.y,
+ gfr.x + gfr.width, gfr.y,
+ stops));
+ gc->FillPath(pth);
+ }
+#endif // wxUSE_GRAPHICS_CONTEXT
+}
+
+void MyCanvas::DrawRegions(wxDC& dc)
+{
+ 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(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);
+ DrawRegionsHelper(dc, 350, false);
+}
+
+void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime)
+{
+ wxCoord y = 100;
+
+ dc.DestroyClippingRegion();
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.SetPen( *wxTRANSPARENT_PEN );
+ dc.DrawRectangle( x, y, 310, 310 );
+
+ dc.SetClippingRegion( x + 10, y + 10, 100, 270 );
+
+ dc.SetBrush( *wxRED_BRUSH );
+ dc.DrawRectangle( x, y, 310, 310 );
+
+ dc.SetClippingRegion( x + 10, y + 10, 100, 100 );
+
+ dc.SetBrush( *wxCYAN_BRUSH );
+ dc.DrawRectangle( x, y, 310, 310 );
+
+ dc.DestroyClippingRegion();
+
+ wxRegion region(x + 110, y + 20, 100, 270);
+#if !defined(__WXMOTIF__)
+ if ( !firstTime )
+ region.Offset(10, 10);
+#endif
+ dc.SetDeviceClippingRegion(region);
+
+ dc.SetBrush( *wxGREY_BRUSH );
+ dc.DrawRectangle( x, y, 310, 310 );
+
+ if (m_smile_bmp.IsOk())
+ {
+ dc.DrawBitmap( m_smile_bmp, x + 150, y + 150, true );
+ dc.DrawBitmap( m_smile_bmp, x + 130, y + 10, true );
+ dc.DrawBitmap( m_smile_bmp, x + 130, y + 280, true );
+ dc.DrawBitmap( m_smile_bmp, x + 100, y + 70, true );
+ dc.DrawBitmap( m_smile_bmp, x + 200, y + 70, true );
+ }
+}
+
void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
{
- wxPaintDC dc(this);
+ wxPaintDC pdc(this);
+ Draw(pdc);
+}
+
+void MyCanvas::Draw(wxDC& pdc)
+{
+#if wxUSE_GRAPHICS_CONTEXT
+ wxGCDC gdc;
+ wxGraphicsRenderer* const renderer = wxGraphicsRenderer::
+#if TEST_CAIRO_EVERYWHERE
+ GetCairoRenderer()
+#else
+ GetDefaultRenderer()
+#endif
+ ;
+
+ wxGraphicsContext* context;
+ if ( wxPaintDC *paintdc = wxDynamicCast(&pdc, wxPaintDC) )
+ {
+ context = renderer->CreateContext(*paintdc);
+ }
+ else if ( wxMemoryDC *memdc = wxDynamicCast(&pdc, wxMemoryDC) )
+ {
+ context = renderer->CreateContext(*memdc);
+ }
+#if wxUSE_METAFILE && defined(wxMETAFILE_IS_ENH)
+ else if ( wxMetafileDC *metadc = wxDynamicCast(&pdc, wxMetafileDC) )
+ {
+ context = renderer->CreateContext(*metadc);
+ }
+#endif
+ else
+ {
+ wxFAIL_MSG( "Unknown wxDC kind" );
+ return;
+ }
+
+ gdc.SetGraphicsContext(context);
+
+ 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() )
+ if ( m_owner->m_backgroundBrush.IsOk() )
dc.SetBackground( m_owner->m_backgroundBrush );
- if ( m_owner->m_colourForeground.Ok() )
+ if ( m_owner->m_colourForeground.IsOk() )
dc.SetTextForeground( m_owner->m_colourForeground );
- if ( m_owner->m_colourBackground.Ok() )
+ if ( m_owner->m_colourBackground.IsOk() )
dc.SetTextBackground( m_owner->m_colourBackground );
if ( m_owner->m_textureBackground) {
- if ( ! m_owner->m_backgroundBrush.Ok() ) {
- wxBrush b(wxColour(0,128,0), wxSOLID);
+ if ( ! m_owner->m_backgroundBrush.IsOk() ) {
+ 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) {
+ if ( m_owner->m_textureBackground )
+ {
dc.SetPen(*wxMEDIUM_GREY_PEN);
- for (int i=0; i<200; i++)
+ for ( int i = 0; i < 200; i++ )
dc.DrawLine(0, i*10, i*10, 0);
}
switch ( m_show )
{
- case Show_Default:
+ case File_ShowDefault:
DrawDefault(dc);
break;
- case Show_Text:
+ 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 Show_Lines:
+ case File_ShowLines:
DrawTestLines( 0, 100, 0, dc );
- DrawTestLines( 0, 300, 1, dc );
- DrawTestLines( 0, 500, 2, dc );
- DrawTestLines( 0, 700, 6, dc );
+ DrawTestLines( 0, 320, 1, dc );
+ DrawTestLines( 0, 540, 2, dc );
+ DrawTestLines( 0, 760, 6, dc );
break;
- case Show_Polygons:
- DrawTestPoly( 0, 100, dc, 0 );
- DrawTestPoly( 33, 500, dc, 1 );
- DrawTestPoly( 43, 1000, dc, 2 );
+ case File_ShowBrushes:
+ DrawTestBrushes(dc);
break;
- case Show_Mask:
- DrawImages(dc);
+ case File_ShowPolygons:
+ DrawTestPoly(dc);
break;
- case Show_Ops:
+ 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)
{
- wxClientDC dc(this);
- PrepareDC(dc);
- m_owner->PrepareDC(dc);
+#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 );
+ }
- wxPoint pos = event.GetPosition();
- long x = dc.DeviceToLogicalX( pos.x );
- long y = dc.DeviceToLogicalY( pos.y );
- wxString str;
- str.Printf( "Current mouse position: %d,%d", (int)x, (int)y );
- m_owner->SetStatusText( str );
+ if ( m_rubberBand )
+ {
+ int x,y, xx, yy ;
+ event.GetPosition(&x,&y);
+ CalcUnscrolledPosition( x, y, &xx, &yy );
+ m_currentpoint = wxPoint( xx , yy ) ;
+ wxRect newrect ( m_anchorpoint , m_currentpoint ) ;
+
+ wxClientDC dc( this ) ;
+ PrepareDC( dc ) ;
+
+ wxDCOverlay overlaydc( m_overlay, &dc );
+ overlaydc.Clear();
+#ifdef __WXMAC__
+ dc.SetPen( *wxGREY_PEN );
+ dc.SetBrush( wxColour( 192,192,192,64 ) );
+#else
+ dc.SetPen( wxPen( *wxLIGHT_GREY, 2, 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;
+
+ wxPoint endpoint = CalcUnscrolledPosition(event.GetPosition());
+
+ // Don't pop up the message box if nothing was actually selected.
+ if ( endpoint != m_anchorpoint )
+ {
+ wxLogMessage("Selected rectangle from (%d, %d) to (%d, %d)",
+ m_anchorpoint.x, m_anchorpoint.y,
+ endpoint.x, endpoint.y);
+ }
+ }
}
// ----------------------------------------------------------------------------
// MyFrame
// ----------------------------------------------------------------------------
-// the event tables connect the wxWindows events with the functions (event
+// 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 (File_Copy, MyFrame::OnCopy)
+ EVT_MENU (File_Save, MyFrame::OnSave)
EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow)
// 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));
+ SetIcon(wxICON(sample));
wxMenu *menuFile = new wxMenu;
- menuFile->Append(File_ShowDefault, "&Default screen\tF1");
- menuFile->Append(File_ShowText, "&Text screen\tF2");
- menuFile->Append(File_ShowLines, "&Lines screen\tF3");
- menuFile->Append(File_ShowPolygons, "&Polygons screen\tF4");
- menuFile->Append(File_ShowMask, "wx&Mask screen\tF5");
- menuFile->Append(File_ShowOps, "&ROP screen\tF6");
+ 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("Spl&ines 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, 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();
+#if wxUSE_METAFILE && defined(wxMETAFILE_IS_ENH)
+ menuFile->Append(File_Copy, wxT("Copy to clipboard"));
+#endif
+ menuFile->Append(File_Save, wxT("&Save...\tCtrl-S"), wxT("Save drawing to file"));
menuFile->AppendSeparator();
- menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog");
+ menuFile->Append(File_About, wxT("&About\tCtrl-A"), wxT("Show about dialog"));
menuFile->AppendSeparator();
- menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program");
+ menuFile->Append(File_Quit, wxT("E&xit\tAlt-X"), wxT("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, 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, "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, 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, "Restore to normal\tCtrl-0" );
+ menuUserScale->Append( UserScale_Restore, wxT("&Restore to normal\tCtrl-0") );
wxMenu *menuAxis = new wxMenu;
- menuAxis->Append( AxisMirror_Horiz, "Mirror horizontally\tCtrl-M", "", TRUE );
- menuAxis->Append( AxisMirror_Vertic, "Mirror vertically\tCtrl-N", "", TRUE );
+ 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, "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, 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, wxT("Set to (&100, 100)\tShift-Ctrl-1") );
+ menuLogical->Append( LogicalOrigin_Restore, wxT("&Restore to normal\tShift-Ctrl-0") );
wxMenu *menuColour = new wxMenu;
- menuColour->Append( Colour_TextForeground, "Text foreground..." );
- menuColour->Append( Colour_TextBackground, "Text background..." );
- menuColour->Append( Colour_Background, "Background colour..." );
- menuColour->Append( Colour_BackgroundMode, "Opaque/transparent\tCtrl-B", "", TRUE );
- menuColour->Append( Colour_TextureBackgound, "Draw textured background\tCtrl-T", "", TRUE);
+#if wxUSE_COLOURDLG
+ 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, 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, "&File");
- menuBar->Append(menuMapMode, "&MapMode");
- menuBar->Append(menuUserScale, "&UserScale");
- menuBar->Append(menuAxis, "&Axis");
- menuBar->Append(menuLogical, "&LogicalOrigin");
- menuBar->Append(menuColour, "&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);
- // create a status bar just for fun (by default with 1 pane only)
+#if wxUSE_STATUSBAR
CreateStatusBar(2);
- SetStatusText("Welcome to wxWindows!");
+ SetStatusText(wxT("Welcome to wxWidgets!"));
+#endif // wxUSE_STATUSBAR
m_mapMode = wxMM_TEXT;
m_xUserScale = 1.0;
m_xLogicalOrigin = 0;
m_yLogicalOrigin = 0;
m_xAxisReversed =
- m_yAxisReversed = FALSE;
+ m_yAxisReversed = false;
m_backgroundMode = wxSOLID;
- m_colourForeground = *wxRED;
- m_colourBackground = *wxBLUE;
- m_textureBackground = FALSE;
+ m_colourForeground = *wxBLACK;
+ m_colourBackground = *wxLIGHT_GREY;
+ m_textureBackground = false;
m_canvas = new MyCanvas( this );
m_canvas->SetScrollbars( 10, 10, 100, 240 );
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, wxT("About Drawing"), wxOK | wxICON_INFORMATION, this);
+}
+
+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::OnCopy(wxCommandEvent& WXUNUSED(event))
+{
+#if wxUSE_METAFILE && defined(wxMETAFILE_IS_ENH)
+ wxMetafileDC dc;
+ if (!dc.IsOk())
+ return;
+ m_canvas->Draw(dc);
+ wxMetafile *mf = dc.Close();
+ if (!mf)
+ return;
+ mf->SetClipboard();
+ delete mf;
+#endif
+}
+
+void MyFrame::OnSave(wxCommandEvent& WXUNUSED(event))
+{
+ wxFileDialog dlg(this, wxT("Save as bitmap"), wxT(""), wxT(""),
+#if wxUSE_LIBPNG
+ wxT("PNG image (*.png)|*.png;*.PNG|")
+#endif
+ wxT("Bitmap image (*.bmp)|*.bmp;*.BMP"),
+ wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
+ if (dlg.ShowModal() == wxID_OK)
+ {
+ wxBitmap bmp(500, 800);
+ wxMemoryDC mdc(bmp);
+ m_canvas->Draw(mdc);
+ bmp.ConvertToImage().SaveFile(dlg.GetPath());
+ }
}
void MyFrame::OnShow(wxCommandEvent& event)
{
- m_canvas->Show((ScreenToShow)(event.GetInt() - MenuShow_First));
+ m_canvas->ToShow(event.GetId());
}
void MyFrame::OnOption(wxCommandEvent& event)
{
- switch (event.GetInt())
+ switch (event.GetId())
{
case MapMode_Text:
m_mapMode = wxMM_TEXT;
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;
m_xAxisReversed = !m_xAxisReversed;
break;
+#if wxUSE_COLOURDLG
case Colour_TextForeground:
m_colourForeground = SelectColour();
break;
case Colour_Background:
{
wxColour col = SelectColour();
- if ( col.Ok() )
+ if ( col.IsOk() )
{
m_backgroundBrush.SetColour(col);
}
}
break;
+#endif // wxUSE_COLOURDLG
+
case Colour_BackgroundMode:
m_backgroundMode = m_backgroundMode == wxSOLID ? wxTRANSPARENT
: wxSOLID;
void MyFrame::PrepareDC(wxDC& dc)
{
- dc.SetMapMode( m_mapMode );
- dc.SetUserScale( m_xUserScale, m_yUserScale );
dc.SetLogicalOrigin( m_xLogicalOrigin, m_yLogicalOrigin );
dc.SetAxisOrientation( !m_xAxisReversed, m_yAxisReversed );
+ dc.SetUserScale( m_xUserScale, m_yUserScale );
+ dc.SetMapMode( m_mapMode );
}
+#if wxUSE_COLOURDLG
wxColour MyFrame::SelectColour()
{
wxColour col;
return col;
}
+#endif // wxUSE_COLOURDLG
projects / wxWidgets.git / blobdiff