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Allow saving the drawing sample canvas to a file or clipboard.

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This allows to test wxMemoryDC and, under MSW, wxMetafileDC and also can be
used to compare the output of different versions of the sample (possibly from
different ports, too).

Closes #13327.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68305 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2011-07-19 22:35:45 +00:00
parent 2d770c4f82
commit 8c6b0819ec
1 changed files with 54 additions and 1 deletions
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55
samples/drawing/drawing.cpp
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@@ -37,6 +37,7 @@
#include "wx/overlay.h"
#include "wx/graphics.h"
#include "wx/filename.h"
#include "wx/metafile.h"
#define TEST_CAIRO_EVERYWHERE 0
@@ -101,6 +102,8 @@ public:
#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);
@@ -146,6 +149,7 @@ public:
#if wxUSE_GRAPHICS_CONTEXT
void UseGraphicContext(bool use) { m_useContext = use; Refresh(); }
#endif
template <typename T> void Draw(T& dc);
protected:
enum DrawMode
@@ -224,6 +228,8 @@ enum
#if wxUSE_GRAPHICS_CONTEXT
File_GraphicContext,
#endif
File_Copy,
File_Save,
MenuOption_First,
@@ -359,6 +365,9 @@ bool MyApp::OnInit()
// 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;
}
@@ -1485,7 +1494,12 @@ extern wxGraphicsRenderer* gCairoRenderer;
void MyCanvas::OnPaint(wxPaintEvent &WXUNUSED(event))
{
wxPaintDC pdc(this);
Draw(pdc);
}
template <typename T>
void MyCanvas::Draw(T& pdc)
{
#if wxUSE_GRAPHICS_CONTEXT
#if TEST_CAIRO_EVERYWHERE
wxGCDC gdc;
@@ -1691,6 +1705,8 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
#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)
@@ -1719,7 +1735,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
#if wxUSE_GRAPHICS_CONTEXT
menuFile->Append(File_ShowAlpha, wxT("&Alpha screen\tF10"));
#endif
menuFile->Append(File_ShowSplines, wxT("&Splines screen\tF11"));
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"));
@@ -1730,6 +1746,11 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
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, wxT("&About...\tCtrl-A"), wxT("Show about dialog"));
menuFile->AppendSeparator();
menuFile->Append(File_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program"));
@@ -1836,6 +1857,38 @@ void MyFrame::OnGraphicContext(wxCommandEvent& event)
}
#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->ToShow(event.GetId());