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added clipping test

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@15811 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2002-06-12 16:15:41 +00:00
parent d5b18b50bd
commit 204dd9a771
1 changed files with 21 additions and 2 deletions
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21
samples/drawing/drawing.cpp
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@@ -115,6 +115,7 @@ public:
// event handlers (these functions should _not_ be virtual) // event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event); void OnQuit(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event); void OnAbout(wxCommandEvent& event);
void OnClip(wxCommandEvent& event);
void OnShow(wxCommandEvent &event); void OnShow(wxCommandEvent &event);
void OnOption(wxCommandEvent &event); void OnOption(wxCommandEvent &event);
@@ -151,6 +152,9 @@ public:
void Show(ScreenToShow show) { m_show = show; Refresh(); } void Show(ScreenToShow show) { m_show = show; Refresh(); }
// set or remove the clipping region
void Clip(bool clip) { m_clip = clip; Refresh(); }
protected: protected:
void DrawTestLines( int x, int y, int width, wxDC &dc ); void DrawTestLines( int x, int y, int width, wxDC &dc );
void DrawTestPoly(wxDC& dc); void DrawTestPoly(wxDC& dc);
@@ -170,6 +174,7 @@ private:
ScreenToShow m_show; ScreenToShow m_show;
wxBitmap m_smile_bmp; wxBitmap m_smile_bmp;
wxIcon m_std_icon; wxIcon m_std_icon;
bool m_clip;
DECLARE_EVENT_TABLE() DECLARE_EVENT_TABLE()
}; };
@@ -197,6 +202,8 @@ enum
File_ShowCircles, File_ShowCircles,
MenuShow_Last = File_ShowCircles, MenuShow_Last = File_ShowCircles,
File_Clip,
MenuOption_First, MenuOption_First,
MapMode_Text = MenuOption_First, MapMode_Text = MenuOption_First,
@@ -919,9 +926,13 @@ void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
} }
} }
if ( m_clip )
dc.SetClippingRegion(100, 100, 100, 100);
dc.Clear(); dc.Clear();
if ( m_owner->m_textureBackground) { if ( m_owner->m_textureBackground )
{
dc.SetPen(*wxMEDIUM_GREY_PEN); 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); dc.DrawLine(0, i*10, i*10, 0);
@@ -994,6 +1005,7 @@ void MyCanvas::OnMouseMove(wxMouseEvent &event)
BEGIN_EVENT_TABLE(MyFrame, wxFrame) BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU (File_Quit, MyFrame::OnQuit) EVT_MENU (File_Quit, MyFrame::OnQuit)
EVT_MENU (File_About, MyFrame::OnAbout) EVT_MENU (File_About, MyFrame::OnAbout)
EVT_MENU (File_Clip, MyFrame::OnClip)
EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow) EVT_MENU_RANGE(MenuShow_First, MenuShow_Last, MyFrame::OnShow)
@@ -1019,6 +1031,8 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
menuFile->Append(File_ShowRegions, "Re&gions screen\tF8"); menuFile->Append(File_ShowRegions, "Re&gions screen\tF8");
menuFile->Append(File_ShowCircles, "&Circles screen\tF9"); menuFile->Append(File_ShowCircles, "&Circles screen\tF9");
menuFile->AppendSeparator(); menuFile->AppendSeparator();
menuFile->AppendCheckItem(File_Clip, "&Clip\tCtrl-C", "Clip/unclip drawing");
menuFile->AppendSeparator();
menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog"); menuFile->Append(File_About, "&About...\tCtrl-A", "Show about dialog");
menuFile->AppendSeparator(); menuFile->AppendSeparator();
menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program"); menuFile->Append(File_Quit, "E&xit\tAlt-X", "Quit this program");
@@ -1110,6 +1124,11 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this); wxMessageBox(msg, "About Drawing", wxOK | wxICON_INFORMATION, this);
} }
void MyFrame::OnClip(wxCommandEvent& event)
{
m_canvas->Clip(event.IsChecked());
}
void MyFrame::OnShow(wxCommandEvent& event) void MyFrame::OnShow(wxCommandEvent& event)
{ {
m_canvas->Show((ScreenToShow)(event.GetId() - MenuShow_First)); m_canvas->Show((ScreenToShow)(event.GetId() - MenuShow_First));