mirror of
https://github.com/wxWidgets/wxWidgets.git
synced 2026-08-17 17:02:51 +08:00
Maarten Bent
700defddcc
First render to a temporary wxSVGFileDC, then use the size of the bounding box as input for the actual SVG size. Use a slightly larger size to account for lines drawn with a bigger wxPen width.
502 lines
19 KiB
C++
502 lines
19 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: svgtest.cpp
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// Purpose: SVG sample
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// Author: Chris Elliott
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ===========================================================================
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// declarations
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// headers
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// ---------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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#include "wx/dcsvg.h"
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#include "wx/notebook.h"
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#include "SVGlogo24.xpm"
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#ifndef wxHAS_IMAGES_IN_RESOURCES
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#include "../sample.xpm"
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#endif
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#include <math.h>
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// ---------------------------------------------------------------------------
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// classes
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// ---------------------------------------------------------------------------
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class MyApp : public wxApp
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{
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public:
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bool OnInit() override;
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};
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// Existing pages:
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enum Page
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{
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Page_Lines,
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Page_Polygons,
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Page_Text,
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Page_Arcs,
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Page_Checkmarks,
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Page_ScaledText,
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Page_Bitmaps,
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Page_Clipping,
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Page_TextPos,
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Page_Max
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};
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static const char* pageNames[] =
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{
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"Lines",
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"Polygons",
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"Text",
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"Arcs",
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"Checkmarks",
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"Scaled text",
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"Bitmaps",
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"Clipping",
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"Text position",
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};
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wxCOMPILE_TIME_ASSERT( WXSIZEOF(pageNames) == Page_Max, PageNamesMismatch );
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static const char* pageDescriptions[] =
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{
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"Green Cross, Cyan Line and spline",
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"Blue rectangle, red edge, clear rounded rectangle, gold ellipse, gold and clear stars",
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"Swiss, Times text; red text, rotated and colored orange",
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"This is an arc test page",
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"Two check marks",
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"Scaling test page",
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"Icon and Bitmap ",
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"Clipping region",
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"Text position test page",
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};
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wxCOMPILE_TIME_ASSERT( WXSIZEOF(pageDescriptions) == Page_Max, PageDescriptionsMismatch );
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class MyPage : public wxScrolledWindow
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{
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public:
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MyPage(wxNotebook *parent, int index);
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virtual void OnDraw(wxDC& dc) override;
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bool OnSave(const wxString& filename);
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private:
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int m_index;
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};
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class MyFrame : public wxFrame
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{
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public:
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MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title);
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void FileSavePicture(wxCommandEvent& event);
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void OnAbout(wxCommandEvent& event);
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void OnQuit(wxCommandEvent& event);
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private:
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wxNotebook *m_notebook;
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wxDECLARE_EVENT_TABLE();
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};
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// ---------------------------------------------------------------------------
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// event tables
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// ---------------------------------------------------------------------------
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wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
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EVT_MENU(wxID_ABOUT, MyFrame::OnAbout)
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EVT_MENU(wxID_EXIT, MyFrame::OnQuit)
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EVT_MENU(wxID_SAVE, MyFrame::FileSavePicture)
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wxEND_EVENT_TABLE()
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// ===========================================================================
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// implementation
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// ===========================================================================
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// ---------------------------------------------------------------------------
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// MyApp
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// ---------------------------------------------------------------------------
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wxIMPLEMENT_APP(MyApp);
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bool MyApp::OnInit()
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{
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// Create the main frame window
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MyFrame* frame = new MyFrame(nullptr, -1, "SVG Demo");
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frame->SetSize(frame->FromDIP(wxSize(600, 500)));
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frame->Show(true);
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return true;
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}
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// ---------------------------------------------------------------------------
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// MyFrame
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// ---------------------------------------------------------------------------
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// Define my frame constructor
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MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title)
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: wxFrame(parent, id, title)
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{
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SetIcon(wxICON(sample));
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#if wxUSE_STATUSBAR
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CreateStatusBar();
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#endif // wxUSE_STATUSBAR
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// Make a menubar
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wxMenu *file_menu = new wxMenu;
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file_menu->Append(wxID_SAVE);
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file_menu->Append(wxID_EXIT);
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wxMenu *help_menu = new wxMenu;
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help_menu->Append(wxID_ABOUT);
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wxMenuBar *menu_bar = new wxMenuBar;
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menu_bar->Append(file_menu, "&File");
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menu_bar->Append(help_menu, "&Help");
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// Associate the menu bar with the frame
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SetMenuBar(menu_bar);
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// Create a notebook
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m_notebook = new wxNotebook(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxBK_TOP);
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//Add SVG Windows to a notebook
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for (int i = 0; i < Page_Max; ++i)
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{
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m_notebook->AddPage(new MyPage(m_notebook, i), pageNames[i]);
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}
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}
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void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
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{
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Close();
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}
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void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
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{
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(void)wxMessageBox("wxWidgets SVG sample\n"
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"Authors:\n"
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" Chris Elliott (c) 2002-2009\n"
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" Prashant Kumar Nirmal (c) 2017\n"
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"Usage: click File|Save to Save the Selected SVG Test",
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"About SVG Test");
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}
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void MyFrame::FileSavePicture(wxCommandEvent& WXUNUSED(event))
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{
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#if wxUSE_FILEDLG
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MyPage * const page = (MyPage *) m_notebook->GetCurrentPage();
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wxFileDialog dialog(this, "Save Picture as", wxEmptyString,
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m_notebook->GetPageText(m_notebook->GetSelection()),
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"SVG vector picture files (*.svg)|*.svg",
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wxFD_SAVE|wxFD_OVERWRITE_PROMPT);
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if (dialog.ShowModal() == wxID_OK)
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{
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if (!page->OnSave ( dialog.GetPath() ))
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{
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return;
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}
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}
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return;
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#endif // wxUSE_FILEDLG
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}
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// ---------------------------------------------------------------------------
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// MyPage
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// ---------------------------------------------------------------------------
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// Define a constructor for my page
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MyPage::MyPage(wxNotebook *parent, int index)
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: wxScrolledWindow(parent)
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{
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SetBackgroundColour(*wxWHITE);
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SetScrollbars(20, 20, 50, 50);
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m_index = index;
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}
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bool MyPage::OnSave(const wxString& filename)
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{
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wxSize svgSize;
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wxSVGFileDC tempSvgDC("", svgSize.x, svgSize.y, 72, pageNames[m_index]);
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OnDraw(tempSvgDC);
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svgSize = wxSize(tempSvgDC.MaxX(), tempSvgDC.MaxY());
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svgSize.IncBy(15); // account for wxPen width exceeding bounds
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wxSVGFileDC svgDC(filename, svgSize.x, svgSize.y, 72, pageNames[m_index]);
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svgDC.SetBitmapHandler(new wxSVGBitmapEmbedHandler());
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OnDraw(svgDC);
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return svgDC.IsOk();
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}
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// Define the repainting behaviour
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void MyPage::OnDraw(wxDC& dc)
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{
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// vars to use ...
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wxPen wP;
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wxBrush wB;
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wxPoint points[6];
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wxColour wC;
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dc.SetFont(wxFontInfo(9).FaceName("Arial").Family(wxFONTFAMILY_SWISS));
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dc.SetPen(*wxGREEN_PEN);
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switch (m_index)
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{
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case Page_Lines:
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// draw lines to make a cross
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dc.DrawLine(dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200), dc.FromDIP(200));
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dc.DrawLine(dc.FromDIP(200), dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200));
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// draw point colored line and spline
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wP = *wxCYAN_PEN;
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wP.SetWidth(3);
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dc.SetPen(wP);
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dc.DrawPoint(dc.FromDIP(25), dc.FromDIP(15));
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dc.DrawLine(dc.FromDIP(50), dc.FromDIP(30), dc.FromDIP(200), dc.FromDIP(30));
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dc.DrawSpline(dc.FromDIP(50), dc.FromDIP(200), dc.FromDIP(50), dc.FromDIP(100), dc.FromDIP(200), dc.FromDIP(10));
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break;
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case Page_Polygons:
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// draw standard shapes
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dc.SetBrush(*wxCYAN_BRUSH);
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dc.SetPen(*wxRED_PEN);
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dc.DrawRectangle(dc.FromDIP(10), dc.FromDIP(10), dc.FromDIP(100), dc.FromDIP(70));
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wB = wxBrush ("DARK ORCHID", wxBRUSHSTYLE_TRANSPARENT);
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dc.SetBrush (wB);
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dc.DrawRoundedRectangle(dc.FromDIP(50), dc.FromDIP(50), dc.FromDIP(100), dc.FromDIP(70), dc.FromDIP(20));
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dc.SetBrush (wxBrush("GOLDENROD") );
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dc.DrawEllipse(dc.FromDIP(100), dc.FromDIP(100), dc.FromDIP(100), dc.FromDIP(50));
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points[0].x = dc.FromDIP(100); points[0].y = dc.FromDIP(200);
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points[1].x = dc.FromDIP(70); points[1].y = dc.FromDIP(260);
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points[2].x = dc.FromDIP(160); points[2].y = dc.FromDIP(230);
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points[3].x = dc.FromDIP(40); points[3].y = dc.FromDIP(230);
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points[4].x = dc.FromDIP(130); points[4].y = dc.FromDIP(260);
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points[5].x = dc.FromDIP(100); points[5].y = dc.FromDIP(200);
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dc.DrawPolygon(5, points);
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dc.DrawLines(6, points, dc.FromDIP(160));
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break;
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case Page_Text:
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// draw text in Arial or similar font
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dc.DrawLine(dc.FromDIP(50), dc.FromDIP(25), dc.FromDIP(50), dc.FromDIP(35));
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dc.DrawLine(dc.FromDIP(45), dc.FromDIP(30), dc.FromDIP(55), dc.FromDIP(30));
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dc.DrawText("This is a Swiss-style string", dc.FromDIP(50), dc.FromDIP(30));
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wC = dc.GetTextForeground();
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dc.SetTextForeground ("FIREBRICK");
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// no effect in msw ??
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dc.SetTextBackground ("WHEAT");
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dc.DrawText("This is a Red string", dc.FromDIP(50), dc.FromDIP(200));
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dc.DrawRotatedText("This is a 45 deg string", dc.FromDIP(50), dc.FromDIP(200), 45);
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dc.DrawRotatedText("This is a 90 deg string", dc.FromDIP(50), dc.FromDIP(200), 90);
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dc.SetFont(wxFontInfo(18)
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.FaceName("Times New Roman")
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.Family(wxFONTFAMILY_ROMAN)
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.Italic().Bold());
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dc.SetTextForeground (wC);
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dc.DrawText("This is a Times-style string", dc.FromDIP(50), dc.FromDIP(60));
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break;
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case Page_Arcs:
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// four arcs start and end points, center
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dc.SetBrush(*wxGREEN_BRUSH);
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dc.DrawArc(dc.FromDIP(200), dc.FromDIP(300), dc.FromDIP(370), dc.FromDIP(230), dc.FromDIP(300), dc.FromDIP(300));
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dc.SetBrush(*wxBLUE_BRUSH);
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dc.DrawArc(dc.FromDIP(270 - 50), dc.FromDIP(270 - 86), dc.FromDIP(270 - 86), dc.FromDIP(270 - 50), dc.FromDIP(270), dc.FromDIP(270));
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dc.SetDeviceOrigin(-10,-10);
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dc.DrawArc(dc.FromDIP(270 - 50), dc.FromDIP(270 - 86), dc.FromDIP(270 - 86), dc.FromDIP(270 - 50), dc.FromDIP(270), dc.FromDIP(270));
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dc.SetDeviceOrigin(0,0);
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wP.SetColour ("CADET BLUE");
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dc.SetPen(wP);
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dc.DrawArc(dc.FromDIP(75), dc.FromDIP(125), dc.FromDIP(110), dc.FromDIP(40), dc.FromDIP(75), dc.FromDIP(75));
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wP.SetColour ("SALMON");
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dc.SetPen(wP);
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dc.SetBrush(*wxRED_BRUSH);
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//top left corner, width and height, start and end angle
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// 315 same center and x-radius as last pie-arc, half Y radius
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dc.DrawEllipticArc(dc.FromDIP(25), dc.FromDIP(50), dc.FromDIP(100), dc.FromDIP(50), 180.0, 45.0);
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wP = *wxCYAN_PEN;
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wP.SetWidth(3);
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dc.SetPen(wP);
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//wxBRUSHSTYLE_TRANSPARENT));
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dc.SetBrush (wxBrush ("SALMON"));
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dc.DrawEllipticArc(dc.FromDIP(300), dc.FromDIP(0), dc.FromDIP(200), dc.FromDIP(100), 0.0, 145.0);
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//same end point
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dc.DrawEllipticArc(dc.FromDIP(300), dc.FromDIP(50), dc.FromDIP(200), dc.FromDIP(100), 90.0, 145.0);
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dc.DrawEllipticArc(dc.FromDIP(300), dc.FromDIP(100), dc.FromDIP(200), dc.FromDIP(100), 90.0, 345.0);
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break;
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case Page_Checkmarks:
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dc.DrawCheckMark(dc.FromDIP(30), dc.FromDIP(30), dc.FromDIP(25), dc.FromDIP(25));
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dc.SetBrush (wxBrush ("SALMON",wxBRUSHSTYLE_TRANSPARENT));
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dc.DrawCheckMark(dc.FromDIP(80), dc.FromDIP(50), dc.FromDIP(75), dc.FromDIP(75));
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dc.DrawRectangle(dc.FromDIP(80), dc.FromDIP(50), dc.FromDIP(75), dc.FromDIP(75));
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break;
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case Page_ScaledText:
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dc.SetFont(wxFontInfo(18)
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.FaceName("Times New Roman")
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.Family(wxFONTFAMILY_ROMAN)
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.Italic().Bold());
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dc.DrawLine(dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200), dc.FromDIP(200));
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dc.DrawLine(dc.FromDIP(200), dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200));
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dc.DrawText("This is an 18pt string", dc.FromDIP(50), dc.FromDIP(60));
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// rescale and draw in blue
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wP = *wxCYAN_PEN;
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dc.SetPen(wP);
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dc.SetUserScale (2.0,0.5);
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dc.SetDeviceOrigin(dc.FromDIP(200), dc.FromDIP(0));
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dc.DrawLine(dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200), dc.FromDIP(200));
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dc.DrawLine(dc.FromDIP(200), dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200));
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dc.DrawText("This is an 18pt string 2 x 0.5 UserScaled", dc.FromDIP(50), dc.FromDIP(60));
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dc.SetUserScale (2.0,2.0);
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dc.SetDeviceOrigin(dc.FromDIP(200), dc.FromDIP(200));
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dc.DrawText("This is an 18pt string 2 x 2 UserScaled", dc.FromDIP(50), dc.FromDIP(60));
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wP = *wxRED_PEN;
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dc.SetPen(wP);
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dc.SetUserScale (1.0,1.0);
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dc.SetDeviceOrigin(dc.FromDIP(0), dc.FromDIP(10));
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dc.SetMapMode (wxMM_METRIC); //svg ignores this
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dc.DrawLine(dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200), dc.FromDIP(200));
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dc.DrawLine(dc.FromDIP(200), dc.FromDIP(0), dc.FromDIP(0), dc.FromDIP(200));
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dc.DrawText("This is an 18pt string in MapMode", dc.FromDIP(50), dc.FromDIP(60));
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break;
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case Page_Bitmaps:
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dc.DrawIcon(wxICON(sample), dc.FromDIP(10), dc.FromDIP(10));
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dc.DrawBitmap(wxBitmap(svgbitmap_xpm), dc.FromDIP(50), dc.FromDIP(15));
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break;
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case Page_Clipping:
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dc.SetTextForeground("RED");
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dc.DrawText("Red = Clipping Off", dc.FromDIP(30), dc.FromDIP(5));
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dc.SetTextForeground("GREEN");
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dc.DrawText("Green = Clipping On", dc.FromDIP(30), dc.FromDIP(25));
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dc.SetTextForeground("BLACK");
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dc.SetPen(*wxRED_PEN);
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dc.SetBrush (wxBrush ("SALMON",wxBRUSHSTYLE_TRANSPARENT));
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dc.DrawCheckMark(dc.FromDIP(80), dc.FromDIP(50), dc.FromDIP(75), dc.FromDIP(75));
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dc.DrawRectangle(dc.FromDIP(80), dc.FromDIP(50), dc.FromDIP(75), dc.FromDIP(75));
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dc.SetPen(*wxGREEN_PEN);
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// Clipped checkmarks
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dc.DrawRectangle(dc.FromDIP(180), dc.FromDIP(50), dc.FromDIP(75), dc.FromDIP(75));
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dc.SetClippingRegion(dc.FromDIP(180), dc.FromDIP(50), dc.FromDIP(75), dc.FromDIP(75)); // x,y,width,height version
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dc.DrawCheckMark(dc.FromDIP(180), dc.FromDIP(50), dc.FromDIP(75), dc.FromDIP(75));
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dc.DestroyClippingRegion();
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dc.DrawRectangle(wxRect(dc.FromDIP(wxPoint(80, 150)), dc.FromDIP(wxSize(75, 75))));
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dc.SetClippingRegion(dc.FromDIP(wxPoint(80, 150)), dc.FromDIP(wxSize(75, 75))); // pt,size version
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dc.DrawCheckMark(dc.FromDIP(80), dc.FromDIP(150), dc.FromDIP(75), dc.FromDIP(75));
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dc.DestroyClippingRegion();
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dc.DrawRectangle(wxRect(dc.FromDIP(wxPoint(180, 150)), dc.FromDIP(wxSize(75, 75))));
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dc.SetClippingRegion(wxRect(dc.FromDIP(wxPoint(180, 150)), dc.FromDIP(wxSize(75, 75)))); // rect version
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dc.DrawCheckMark(dc.FromDIP(180), dc.FromDIP(150), dc.FromDIP(75), dc.FromDIP(75));
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dc.DestroyClippingRegion();
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dc.DrawRectangle(wxRect(dc.FromDIP(wxPoint(80, 250)), dc.FromDIP(wxSize(50, 65))));
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dc.DrawRectangle(wxRect(dc.FromDIP(wxPoint(105, 260)), dc.FromDIP(wxSize(50, 65))));
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dc.SetClippingRegion(wxRect(dc.FromDIP(wxPoint(80, 250)), dc.FromDIP(wxSize(50, 65)))); // second call to SetClippingRegion
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dc.SetClippingRegion(wxRect(dc.FromDIP(wxPoint(105, 260)), dc.FromDIP(wxSize(50, 65)))); // forms intersection with previous
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dc.DrawCheckMark(dc.FromDIP(80), dc.FromDIP(250), dc.FromDIP(75), dc.FromDIP(75));
|
|
dc.DestroyClippingRegion(); // only one call to destroy (there's no stack)
|
|
|
|
/*
|
|
** Clipping by wxRegion not implemented for SVG. Should be
|
|
** possible, but need to access points that define the wxRegion
|
|
** from inside DoSetDeviceClippingRegion() and wxRegion does not
|
|
** implement anything like getPoints().
|
|
points[0].x = 180; points[0].y = 250;
|
|
points[1].x = 255; points[1].y = 250;
|
|
points[2].x = 180; points[2].y = 325;
|
|
points[3].x = 255; points[3].y = 325;
|
|
points[4].x = 180; points[4].y = 250;
|
|
|
|
dc.DrawLines (5, points);
|
|
wxRegion reg = wxRegion(5,points);
|
|
|
|
dc.SetClippingRegion(reg);
|
|
dc.DrawCheckMark ( 180,250,75,75);
|
|
dc.DestroyClippingRegion();
|
|
*/
|
|
|
|
break;
|
|
|
|
case Page_TextPos:
|
|
wxString txtStr;
|
|
wxCoord txtX, txtY, txtW, txtH, txtDescent, txtEL;
|
|
wxCoord txtPad = 0;
|
|
|
|
wP = *wxRED_PEN;
|
|
dc.SetPen(wP);
|
|
//dc.SetBackgroundMode(wxBRUSHSTYLE_SOLID);
|
|
//dc.SetTextBackground(*wxBLUE);
|
|
|
|
// Horizontal text
|
|
txtStr = "Horizontal string";
|
|
dc.GetTextExtent(txtStr, &txtW, &txtH, &txtDescent, &txtEL);
|
|
txtX = dc.FromDIP(50);
|
|
txtY = dc.FromDIP(200);
|
|
dc.DrawRectangle(txtX, txtY, txtW + 2*txtPad, txtH + 2*txtPad);
|
|
dc.DrawText(txtStr, txtX + txtPad, txtY + txtPad);
|
|
|
|
// Vertical text
|
|
txtStr = "Vertical string";
|
|
dc.GetTextExtent(txtStr, &txtW, &txtH, &txtDescent, &txtEL);
|
|
txtX = dc.FromDIP(50);
|
|
txtY = dc.FromDIP(150);
|
|
dc.DrawRectangle(txtX, txtY - (txtW + 2*txtPad), txtH + 2*txtPad, txtW + 2*txtPad);
|
|
dc.DrawRotatedText(txtStr, txtX + txtPad, txtY - txtPad, 90);
|
|
|
|
// 45 degree text
|
|
txtStr = "45 deg string";
|
|
dc.GetTextExtent(txtStr, &txtW, &txtH, &txtDescent, &txtEL);
|
|
double lenW = (double)(txtW + 2*txtPad) / sqrt(2.0);
|
|
double lenH = (double)(txtH + 2*txtPad) / sqrt(2.0);
|
|
double padding = (double)txtPad / sqrt(2.0);
|
|
txtX = dc.FromDIP(150);
|
|
txtY = dc.FromDIP(100);
|
|
dc.DrawLine(txtX - int(padding), txtY, txtX + int(lenW), txtY - int(lenW)); // top
|
|
dc.DrawLine(txtX + int(lenW), txtY - int(lenW), txtX - int(padding + lenH + lenW), txtY + int(lenH - lenW));
|
|
dc.DrawLine(txtX - int(padding), txtY, txtX - int(padding + lenH), txtY + int(lenH));
|
|
dc.DrawLine(txtX - int(padding + lenH), txtY + int(lenH), txtX - int(padding + lenH + lenW), txtY + int(lenH - lenW)); // bottom
|
|
dc.DrawRotatedText(txtStr, txtX, txtY, 45);
|
|
break;
|
|
}
|
|
|
|
wxLogStatus(pageDescriptions[m_index]);
|
|
}
|