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Add saving as SVG to drawing sample.

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Changed the colour of the third star-polygon to test brush pattern with different colours.
Use the width and height of the scroll panel as image size.
This commit is contained in:
Maarten Bent
2016-03-15 23:54:36 +01:00
parent b55a18f6b8
commit c7e4b301d0
1 changed files with 42 additions and 6 deletions
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40
samples/drawing/drawing.cpp
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@@ -39,6 +39,9 @@
#include "wx/filename.h" #include "wx/filename.h"
#include "wx/metafile.h" #include "wx/metafile.h"
#include "wx/settings.h" #include "wx/settings.h"
#if wxUSE_SVG
#include "wx/dcsvg.h"
#endif
// ---------------------------------------------------------------------------- // ----------------------------------------------------------------------------
// resources // resources
@@ -106,6 +109,7 @@ public:
void OnMouseUp(wxMouseEvent &event); void OnMouseUp(wxMouseEvent &event);
void ToShow(int show) { m_show = show; Refresh(); } void ToShow(int show) { m_show = show; Refresh(); }
int GetPage() { return m_show; }
// set or remove the clipping region // set or remove the clipping region
void Clip(bool clip) { m_clip = clip; Refresh(); } void Clip(bool clip) { m_clip = clip; Refresh(); }
@@ -120,6 +124,7 @@ public:
{ if ( !m_renderer ) return name.empty(); { if ( !m_renderer ) return name.empty();
return m_renderer->GetName() == name; return m_renderer->GetName() == name;
} }
wxGraphicsRenderer* GetRenderer() const { return m_renderer; }
#endif // wxUSE_GRAPHICS_CONTEXT #endif // wxUSE_GRAPHICS_CONTEXT
void UseBuffer(bool use) { m_useBuffer = use; Refresh(); } void UseBuffer(bool use) { m_useBuffer = use; Refresh(); }
@@ -573,6 +578,8 @@ void MyCanvas::DrawTestPoly(wxDC& dc)
dc.DrawPolygon(WXSIZEOF(star), star, 0, 30); dc.DrawPolygon(WXSIZEOF(star), star, 0, 30);
dc.DrawPolygon(WXSIZEOF(star), star, 160, 30, wxWINDING_RULE); dc.DrawPolygon(WXSIZEOF(star), star, 160, 30, wxWINDING_RULE);
wxBrush brushHatchGreen(*wxGREEN, wxBRUSHSTYLE_FDIAGONAL_HATCH);
dc.SetBrush(brushHatchGreen);
wxPoint star2[10]; wxPoint star2[10];
star2[0] = wxPoint(0, 100); star2[0] = wxPoint(0, 100);
star2[1] = wxPoint(-59, -81); star2[1] = wxPoint(-59, -81);
@@ -901,7 +908,7 @@ void MyCanvas::DrawText(wxDC& dc)
wxCoord y = 150; wxCoord y = 150;
dc.SetLogicalFunction(wxINVERT); dc.SetLogicalFunction(wxINVERT);
// text drawing should ignore logical function // text drawing should ignore logical function
dc.DrawText( wxT("There should be a text below"), 110, 150 ); dc.DrawText( wxT("There should be a text below"), 110, y );
dc.DrawRectangle( 110, y, 100, height ); dc.DrawRectangle( 110, y, 100, height );
y += height; y += height;
@@ -2168,17 +2175,46 @@ void MyFrame::OnSave(wxCommandEvent& WXUNUSED(event))
wxFileDialog dlg(this, wxT("Save as bitmap"), wxT(""), wxT(""), wxFileDialog dlg(this, wxT("Save as bitmap"), wxT(""), wxT(""),
#if wxUSE_LIBPNG #if wxUSE_LIBPNG
wxT("PNG image (*.png)|*.png;*.PNG|") wxT("PNG image (*.png)|*.png;*.PNG|")
#endif
#if wxUSE_SVG
wxT("SVG image (*.svg)|*.svg;*.SVG|")
#endif #endif
wxT("Bitmap image (*.bmp)|*.bmp;*.BMP"), wxT("Bitmap image (*.bmp)|*.bmp;*.BMP"),
wxFD_SAVE | wxFD_OVERWRITE_PROMPT); wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
if (dlg.ShowModal() == wxID_OK) if (dlg.ShowModal() == wxID_OK)
{ {
wxBitmap bmp(500, 800); int width, height;
m_canvas->GetVirtualSize(&width, &height);
#if wxUSE_SVG
wxString ext = dlg.GetPath().AfterLast('.').Lower();
if (ext.Lower() == wxT("svg"))
{
// Graphics screen can only be drawn using GraphicsContext
if (m_canvas->GetPage() == File_ShowGraphics) {
wxLogMessage("Graphics screen can not be saved as SVG.");
return;
}
#if wxUSE_GRAPHICS_CONTEXT
wxGraphicsRenderer* tempRenderer = m_canvas->GetRenderer();
m_canvas->UseGraphicRenderer(NULL);
#endif
wxSVGFileDC svgdc(dlg.GetPath(), width, height, 72, wxT("Drawing sample"));
svgdc.SetBitmapHandler(new wxSVGBitmapEmbedHandler());
m_canvas->Draw(svgdc);
#if wxUSE_GRAPHICS_CONTEXT
m_canvas->UseGraphicRenderer(tempRenderer);
#endif
}
else
#endif
{
wxBitmap bmp(width, height);
wxMemoryDC mdc(bmp); wxMemoryDC mdc(bmp);
m_canvas->Draw(mdc); m_canvas->Draw(mdc);
bmp.ConvertToImage().SaveFile(dlg.GetPath()); bmp.ConvertToImage().SaveFile(dlg.GetPath());
} }
} }
}
void MyFrame::OnShow(wxCommandEvent& event) void MyFrame::OnShow(wxCommandEvent& event)
{ {