AuroraMiddleware/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

graphics context implementation test case

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41511 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor 2006-09-29 15:53:57 +00:00
parent 505810425a
commit f31a4cb237
1 changed files with 102 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

103
samples/drawing/drawing.cpp
View File

@ -34,6 +34,18 @@
#include "wx/image.h"
#include "wx/artprov.h"
#define wxTEST_GRAPHICS 0
#if wxTEST_GRAPHICS
#include "wx/graphics.h"
#if wxUSE_GRAPHICS_CONTEXT == 0
#error wxUSE_GRAPHICS_CONTEXT must be defined to 1 for testing
#endif
#else
#undef wxUSE_GRAPHICS_CONTEXT
#define wxUSE_GRAPHICS_CONTEXT 0
#endif
// ----------------------------------------------------------------------------
// ressources
// ----------------------------------------------------------------------------
@ -61,6 +73,9 @@ enum ScreenToShow
Show_Regions,
Show_Circles,
Show_Splines,
#if wxUSE_GRAPHICS_CONTEXT
Show_Alpha,
#endif
Show_Gradient,
Show_Max
};
@ -114,6 +129,9 @@ 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);
@ -154,6 +172,9 @@ public:
// 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:
void DrawTestLines( int x, int y, int width, wxDC &dc );
@ -162,6 +183,9 @@ protected:
void DrawText(wxDC& dc);
void DrawImages(wxDC& dc);
void DrawWithLogicalOps(wxDC& dc);
#if wxUSE_GRAPHICS_CONTEXT
void DrawAlpha(wxDC& dc);
#endif
void DrawRegions(wxDC& dc);
void DrawCircles(wxDC& dc);
void DrawSplines(wxDC& dc);
@ -177,6 +201,9 @@ private:
wxBitmap m_smile_bmp;
wxIcon m_std_icon;
bool m_clip;
#if wxUSE_GRAPHICS_CONTEXT
bool m_useContext ;
#endif
DECLARE_EVENT_TABLE()
};
@ -203,10 +230,16 @@ enum
File_ShowRegions,
File_ShowCircles,
File_ShowSplines,
#if wxUSE_GRAPHICS_CONTEXT
File_ShowAlpha,
#endif
File_ShowGradients,
MenuShow_Last = File_ShowGradients,
File_Clip,
#if wxUSE_GRAPHICS_CONTEXT
File_GraphicContext,
#endif
MenuOption_First,
@ -384,6 +417,9 @@ MyCanvas::MyCanvas(MyFrame *parent)
m_smile_bmp = wxBitmap(smile_xpm);
m_std_icon = wxArtProvider::GetIcon(wxART_INFORMATION);
m_clip = false;
#if wxUSE_GRAPHICS_CONTEXT
m_useContext = false;
#endif
}
void MyCanvas::DrawTestBrushes(wxDC& dc)
@ -857,6 +893,41 @@ void MyCanvas::DrawWithLogicalOps(wxDC& dc)
}
}
#if wxUSE_GRAPHICS_CONTEXT
void MyCanvas::DrawAlpha(wxDC& dc)
{
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) ;
}
#endif
void MyCanvas::DrawCircles(wxDC& dc)
{
int x = 100,
@ -1095,7 +1166,15 @@ void MyCanvas::DrawRegionsHelper(wxDC& dc, wxCoord x, bool firstTime)
void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
{
wxPaintDC dc(this);
wxPaintDC pdc(this);
#if wxUSE_GRAPHICS_CONTEXT
wxGCDC gdc( pdc ) ;
wxDC &dc = m_useContext ? (wxDC&) gdc : (wxDC&) pdc ;
#else
wxDC &dc = pdc ;
#endif
PrepareDC(dc);
m_owner->PrepareDC(dc);
@ -1172,6 +1251,12 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
case Show_Ops:
DrawWithLogicalOps(dc);
break;
#if wxUSE_GRAPHICS_CONTEXT
case Show_Alpha:
DrawAlpha(dc);
break;
#endif
case Show_Gradient:
DrawGradients(dc);
@ -1211,6 +1296,9 @@ 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)
@ -1235,10 +1323,16 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
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"));
#if wxUSE_GRAPHICS_CONTEXT
menuFile->Append(File_ShowAlpha, _T("&Alpha screen\tF10"));
#endif
menuFile->Append(File_ShowSplines, _T("&Splines screen\tF11"));
menuFile->Append(File_ShowGradients, _T("&Gradients screen\tF12"));
menuFile->AppendSeparator();
menuFile->AppendCheckItem(File_Clip, _T("&Clip\tCtrl-C"), _T("Clip/unclip drawing"));
#if wxUSE_GRAPHICS_CONTEXT
menuFile->AppendCheckItem(File_GraphicContext, _T("&Use GraphicContext\tCtrl-Y"), _T("Use GraphicContext"));
#endif
menuFile->AppendSeparator();
menuFile->Append(File_About, _T("&About...\tCtrl-A"), _T("Show about dialog"));
menuFile->AppendSeparator();
@ -1339,6 +1433,13 @@ 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));