// Author: Vadim Zeitlin
// Modified by:
// Created: 04/01/98
-// RCS-ID: $Id$
// Copyright:
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include "wx/wx.h"
#endif
-#include "wx/intl.h"
-#include "wx/log.h"
-
#include "wx/dnd.h"
-
-#ifdef __WXMOTIF__
- #error Sorry, drag and drop is not yet implemented on wxMotif.
+#include "wx/dataobj.h"
+#include "wx/image.h"
+#include "wx/clipbrd.h"
+#include "wx/colordlg.h"
+#include "wx/metafile.h"
+#include "wx/dirctrl.h"
+
+#ifndef wxHAS_IMAGES_IN_RESOURCES
+ #include "../sample.xpm"
+#if wxUSE_DRAG_AND_DROP
+ #include "dnd_copy.xpm"
+ #include "dnd_move.xpm"
+ #include "dnd_none.xpm"
#endif
-
-#if defined(__WXGTK__) || defined(__WXMOTIF__)
- #include "mondrian.xpm"
#endif
-#include "wx/clipbrd.h"
+#if wxUSE_DRAG_AND_DROP
// ----------------------------------------------------------------------------
// Derive two simple classes which just put in the listbox the strings (text or
// file names) we drop on them
// ----------------------------------------------------------------------------
-typedef long wxDropPointCoord;
-
class DnDText : public wxTextDropTarget
{
public:
DnDText(wxListBox *pOwner) { m_pOwner = pOwner; }
- virtual bool OnDropText(wxDropPointCoord x, wxDropPointCoord y,
- const wxChar* psz);
+ virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& text);
private:
wxListBox *m_pOwner;
class DnDFile : public wxFileDropTarget
{
public:
- DnDFile(wxListBox *pOwner) { m_pOwner = pOwner; }
+ DnDFile(wxListBox *pOwner = NULL) { m_pOwner = pOwner; }
- virtual bool OnDropFiles(wxDropPointCoord x, wxDropPointCoord y,
- size_t nFiles, const wxChar* const aszFiles[] );
+ virtual bool OnDropFiles(wxCoord x, wxCoord y,
+ const wxArrayString& filenames);
private:
wxListBox *m_pOwner;
};
+// ----------------------------------------------------------------------------
+// Define a custom dtop target accepting URLs
+// ----------------------------------------------------------------------------
+
+class URLDropTarget : public wxDropTarget
+{
+public:
+ URLDropTarget() { SetDataObject(new wxURLDataObject); }
+
+ void OnDropURL(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), const wxString& text)
+ {
+ // of course, a real program would do something more useful here...
+ wxMessageBox(text, wxT("wxDnD sample: got URL"),
+ wxICON_INFORMATION | wxOK);
+ }
+
+ // URLs can't be moved, only copied
+ virtual wxDragResult OnDragOver(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+ wxDragResult WXUNUSED(def))
+ {
+ return wxDragLink; // At least IE 5.x needs wxDragLink, the
+ // other browsers on MSW seem okay with it too.
+ }
+
+ // translate this to calls to OnDropURL() just for convenience
+ virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def)
+ {
+ if ( !GetData() )
+ return wxDragNone;
+
+ OnDropURL(x, y, ((wxURLDataObject *)m_dataObject)->GetURL());
+
+ return def;
+ }
+};
+
+#endif // wxUSE_DRAG_AND_DROP
+
// ----------------------------------------------------------------------------
// Define a new application type
// ----------------------------------------------------------------------------
class DnDApp : public wxApp
{
public:
- bool OnInit();
+ virtual bool OnInit();
};
-IMPLEMENT_APP(DnDApp);
+IMPLEMENT_APP(DnDApp)
+
+#if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
// ----------------------------------------------------------------------------
-// Define a new frame type
+// Define canvas class to show a bitmap
// ----------------------------------------------------------------------------
-class DnDFrame : public wxFrame
+
+class DnDCanvasBitmap : public wxScrolledWindow
{
public:
- DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h);
- ~DnDFrame();
+ DnDCanvasBitmap(wxWindow *parent) : wxScrolledWindow(parent) { }
- void OnPaint(wxPaintEvent& event);
- void OnQuit (wxCommandEvent& event);
- void OnAbout(wxCommandEvent& event);
- void OnDrag (wxCommandEvent& event);
- void OnHelp (wxCommandEvent& event);
- void OnLogClear(wxCommandEvent& event);
- void OnCopy(wxCommandEvent& event);
- void OnPaste(wxCommandEvent& event);
+ void SetBitmap(const wxBitmap& bitmap)
+ {
+ m_bitmap = bitmap;
- void OnLeftDown(wxMouseEvent& event);
- void OnRightDown(wxMouseEvent& event);
+ SetScrollbars(10, 10,
+ m_bitmap.GetWidth() / 10, m_bitmap.GetHeight() / 10);
- DECLARE_EVENT_TABLE()
+ Refresh();
+ }
+
+ void OnPaint(wxPaintEvent& WXUNUSED(event))
+ {
+ wxPaintDC dc(this);
+
+ if ( m_bitmap.IsOk() )
+ {
+ PrepareDC(dc);
+
+ dc.DrawBitmap(m_bitmap, 0, 0);
+ }
+ }
private:
- wxListBox *m_ctrlFile,
- *m_ctrlText;
- wxTextCtrl *m_ctrlLog;
+ wxBitmap m_bitmap;
+
+ DECLARE_EVENT_TABLE()
+};
+
+#if wxUSE_METAFILE
+
+// and the same thing fo metafiles
+class DnDCanvasMetafile : public wxScrolledWindow
+{
+public:
+ DnDCanvasMetafile(wxWindow *parent) : wxScrolledWindow(parent) { }
+
+ void SetMetafile(const wxMetafile& metafile)
+ {
+ m_metafile = metafile;
+
+ SetScrollbars(10, 10,
+ m_metafile.GetWidth() / 10, m_metafile.GetHeight() / 10);
+
+ Refresh();
+ }
+
+ void OnPaint(wxPaintEvent&)
+ {
+ wxPaintDC dc(this);
+
+ if ( m_metafile.IsOk() )
+ {
+ PrepareDC(dc);
+
+ m_metafile.Play(&dc);
+ }
+ }
- wxLog *m_pLog, *m_pLogPrev;
+private:
+ wxMetafile m_metafile;
- wxString m_strText;
+ DECLARE_EVENT_TABLE()
};
+#endif // wxUSE_METAFILE
+
// ----------------------------------------------------------------------------
-// IDs for the menu commands
+// Define a new frame type for the main frame
// ----------------------------------------------------------------------------
-enum
+class DnDFrame : public wxFrame
{
- Menu_Quit = 1,
- Menu_Drag,
- Menu_About = 101,
- Menu_Help,
- Menu_Clear,
- Menu_Copy,
- Menu_Paste
-};
+public:
+ DnDFrame();
+ virtual ~DnDFrame();
-BEGIN_EVENT_TABLE(DnDFrame, wxFrame)
- EVT_MENU(Menu_Quit, DnDFrame::OnQuit)
- EVT_MENU(Menu_About, DnDFrame::OnAbout)
- EVT_MENU(Menu_Drag, DnDFrame::OnDrag)
- EVT_MENU(Menu_Help, DnDFrame::OnHelp)
- EVT_MENU(Menu_Clear, DnDFrame::OnLogClear)
- EVT_MENU(Menu_Copy, DnDFrame::OnCopy)
- EVT_MENU(Menu_Paste, DnDFrame::OnPaste)
-
- EVT_LEFT_DOWN( DnDFrame::OnLeftDown)
- EVT_RIGHT_DOWN( DnDFrame::OnRightDown)
- EVT_PAINT( DnDFrame::OnPaint)
-END_EVENT_TABLE()
+ void OnPaint(wxPaintEvent& event);
+ void OnSize(wxSizeEvent& event);
+ void OnQuit(wxCommandEvent& event);
+ void OnAbout(wxCommandEvent& event);
+ void OnDrag(wxCommandEvent& event);
+ void OnDragMoveByDefault(wxCommandEvent& event);
+ void OnDragMoveAllow(wxCommandEvent& event);
+ void OnNewFrame(wxCommandEvent& event);
+ void OnHelp (wxCommandEvent& event);
+#if wxUSE_LOG
+ void OnLogClear(wxCommandEvent& event);
+#endif // wxUSE_LOG
- // `Main program' equivalent, creating windows and returning main app frame
-bool DnDApp::OnInit()
-{
- // create the main frame window
- DnDFrame *frame = new DnDFrame((wxFrame *) NULL,
- "Drag-and-Drop/Clipboard wxWindows Sample",
- 50, 50, 450, 340);
+ void OnCopy(wxCommandEvent& event);
+ void OnPaste(wxCommandEvent& event);
- // activate it
- frame->Show(TRUE);
+ void OnCopyBitmap(wxCommandEvent& event);
+ void OnPasteBitmap(wxCommandEvent& event);
- SetTopWindow(frame);
+#if wxUSE_METAFILE
+ void OnPasteMetafile(wxCommandEvent& event);
+#endif // wxUSE_METAFILE
- return TRUE;
-}
+ void OnCopyFiles(wxCommandEvent& event);
+ void OnCopyURL(wxCommandEvent& event);
-DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h)
- : wxFrame(frame, -1, title, wxPoint(x, y), wxSize(w, h)),
- m_strText("wxWindows drag & drop works :-)")
+ void OnUsePrimary(wxCommandEvent& event);
-{
- // frame icon and status bar
- SetIcon(wxICON(mondrian));
+ void OnLeftDown(wxMouseEvent& event);
+ void OnRightDown(wxMouseEvent& event);
- CreateStatusBar();
+#if wxUSE_DRAG_AND_DROP
+ void OnBeginDrag(wxTreeEvent& event);
+#endif // wxUSE_DRAG_AND_DROP
- // construct menu
- wxMenu *file_menu = new wxMenu;
- file_menu->Append(Menu_Drag, "&Test drag...");
- file_menu->AppendSeparator();
- file_menu->Append(Menu_Quit, "E&xit");
+ void OnUpdateUIMoveByDefault(wxUpdateUIEvent& event);
- wxMenu *log_menu = new wxMenu;
- log_menu->Append(Menu_Clear, "Clear");
+ void OnUpdateUIPasteText(wxUpdateUIEvent& event);
+ void OnUpdateUIPasteBitmap(wxUpdateUIEvent& event);
- wxMenu *help_menu = new wxMenu;
- help_menu->Append(Menu_Help, "&Help...");
- help_menu->AppendSeparator();
- help_menu->Append(Menu_About, "&About");
+private:
+#if wxUSE_DRAG_AND_DROP
+ // show the result of a dnd operation in the status bar
+ void LogDragResult(wxDragResult result);
+#endif // wxUSE_DRAG_AND_DROP
- wxMenu *clip_menu = new wxMenu;
- clip_menu->Append(Menu_Copy, "&Copy\tCtrl+C");
- clip_menu->Append(Menu_Paste, "&Paste\tCtrl+V");
- wxMenuBar *menu_bar = new wxMenuBar;
- menu_bar->Append(file_menu, "&File");
- menu_bar->Append(log_menu, "&Log");
- menu_bar->Append(clip_menu, "&Clipboard");
- menu_bar->Append(help_menu, "&Help");
+ // GUI controls
+ wxListBox *m_ctrlFile,
+ *m_ctrlText;
+ wxGenericDirCtrl *m_ctrlDir;
- SetMenuBar(menu_bar);
+#if wxUSE_LOG
+ wxTextCtrl *m_ctrlLog;
- // make a panel with 3 subwindows
- wxPoint pos(0, 0);
- wxSize size(400, 200);
+ wxLog *m_pLog,
+ *m_pLogPrev;
+#endif // wxUSE_LOG
- wxString strFile("Drop files here!"), strText("Drop text on me");
+ // move the text by default (or copy)?
+ bool m_moveByDefault;
- m_ctrlFile = new wxListBox(this, -1, pos, size, 1, &strFile, wxLB_HSCROLL);
- m_ctrlText = new wxListBox(this, -1, pos, size, 1, &strText, wxLB_HSCROLL);
+ // allow moving the text at all?
+ bool m_moveAllow;
- m_ctrlLog = new wxTextCtrl(this, -1, "", pos, size,
- wxTE_MULTILINE | wxTE_READONLY |
- wxSUNKEN_BORDER );
+ // the text we drag
+ wxString m_strText;
-#if wxUSE_STD_IOSTREAM
-// redirect log messages to the text window (don't forget to delete it!)
- m_pLog = new wxLogTextCtrl(m_ctrlLog);
- m_pLogPrev = wxLog::SetActiveTarget(m_pLog);
-#endif
- // associate drop targets with 2 text controls
- m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
- m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));
+ DECLARE_EVENT_TABLE()
+};
- wxLayoutConstraints *c;
+// ----------------------------------------------------------------------------
+// A shape is an example of application-specific data which may be transported
+// via drag-and-drop or clipboard: in our case, we have different geometric
+// shapes, each one with its own colour and position
+// ----------------------------------------------------------------------------
- // Top-left listbox
- c = new wxLayoutConstraints;
- c->left.SameAs(this, wxLeft);
- c->top.SameAs(this, wxTop);
- c->right.PercentOf(this, wxRight, 50);
- c->height.PercentOf(this, wxHeight, 40);
- m_ctrlFile->SetConstraints(c);
+#if wxUSE_DRAG_AND_DROP
- // Top-right listbox
- c = new wxLayoutConstraints;
- c->left.SameAs (m_ctrlFile, wxRight);
- c->top.SameAs (this, wxTop);
- c->right.SameAs (this, wxRight);
- c->height.PercentOf(this, wxHeight, 40);
- m_ctrlText->SetConstraints(c);
+class DnDShape
+{
+public:
+ enum Kind
+ {
+ None,
+ Triangle,
+ Rectangle,
+ Ellipse
+ };
+
+ DnDShape(const wxPoint& pos,
+ const wxSize& size,
+ const wxColour& col)
+ : m_pos(pos), m_size(size), m_col(col)
+ {
+ }
- // Lower text control
- c = new wxLayoutConstraints;
- c->left.SameAs (this, wxLeft);
- c->right.SameAs (this, wxRight);
- c->height.PercentOf(this, wxHeight, 40);
- c->top.SameAs(m_ctrlText, wxBottom);
- m_ctrlLog->SetConstraints(c);
+ // this is for debugging - lets us see when exactly an object is freed
+ // (this may be later than you think if it's on the clipboard, for example)
+ virtual ~DnDShape() { }
- SetAutoLayout(TRUE);
-}
+ // the functions used for drag-and-drop: they dump and restore a shape into
+ // some bitwise-copiable data (might use streams too...)
+ // ------------------------------------------------------------------------
-void DnDFrame::OnQuit(wxCommandEvent& /* event */)
-{
- Close(TRUE);
-}
+ // restore from buffer
+ static DnDShape *New(const void *buf);
-void DnDFrame::OnPaint(wxPaintEvent& /*event*/)
-{
- int w = 0;
- int h = 0;
- GetClientSize( &w, &h );
+ virtual size_t GetDataSize() const
+ {
+ return sizeof(ShapeDump);
+ }
- wxPaintDC dc(this);
- dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL, FALSE, "charter" ) );
- dc.DrawText( "Drag text from here!", 20, h-35 );
-}
+ virtual void GetDataHere(void *buf) const
+ {
+ ShapeDump& dump = *(ShapeDump *)buf;
+ dump.x = m_pos.x;
+ dump.y = m_pos.y;
+ dump.w = m_size.x;
+ dump.h = m_size.y;
+ dump.r = m_col.Red();
+ dump.g = m_col.Green();
+ dump.b = m_col.Blue();
+ dump.k = GetKind();
+ }
-void DnDFrame::OnDrag(wxCommandEvent& /* event */)
-{
- wxString strText = wxGetTextFromUser
- (
- "After you enter text in this dialog, press any mouse\n"
- "button in the bottom (empty) part of the frame and \n"
- "drag it anywhere - you will be in fact dragging the\n"
- "text object containing this text",
- "Please enter some text", m_strText, this
- );
+ // accessors
+ const wxPoint& GetPosition() const { return m_pos; }
+ const wxColour& GetColour() const { return m_col; }
+ const wxSize& GetSize() const { return m_size; }
- m_strText = strText;
-}
+ void Move(const wxPoint& pos) { m_pos = pos; }
-void DnDFrame::OnAbout(wxCommandEvent& /* event */)
-{
- wxMessageBox("Drag-&-Drop Demo\n"
- "Please see \"Help|Help...\" for details\n"
- "Copyright (c) 1998 Vadim Zeitlin",
- "About wxDnD",
- wxICON_INFORMATION | wxOK,
- this);
-}
+ // to implement in derived classes
+ virtual Kind GetKind() const = 0;
-void DnDFrame::OnHelp(wxCommandEvent& /* event */)
-{
- wxMessageDialog dialog(this,
- "This small program demonstrates drag & drop support in wxWindows. The program window\n"
- "consists of 3 parts: the bottom pane is for debug messages, so that you can see what's\n"
- "going on inside. The top part is split into 2 listboxes, the left one accepts files\n"
- "and the right one accepts text.\n"
- "\n"
- "To test wxDropTarget: open wordpad (write.exe), select some text in it and drag it to\n"
- "the right listbox (you'll notice the usual visual feedback, i.e. the cursor will change).\n"
- "Also, try dragging some files (you can select several at once) from Windows Explorer (or \n"
- "File Manager) to the left pane. Hold down Ctrl/Shift keys when you drop text (doesn't \n"
- "work with files) and see what changes.\n"
- "\n"
- "To test wxDropSource: just press any mouse button on the empty zone of the window and drag\n"
- "it to wordpad or any other droptarget accepting text (and of course you can just drag it\n"
- "to the right pane). Due to a lot of trace messages, the cursor might take some time to \n"
- "change, don't release the mouse button until it does. You can change the string being\n"
- "dragged in in \"File|Test drag...\" dialog.\n"
- "\n"
- "\n"
- "Please send all questions/bug reports/suggestions &c to \n"
- "Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>",
- "wxDnD Help");
+ virtual void Draw(wxDC& dc)
+ {
+ dc.SetPen(wxPen(m_col));
+ }
- dialog.ShowModal();
-}
+protected:
+ //get a point 1 up and 1 left, otherwise the mid-point of a triangle is on the line
+ wxPoint GetCentre() const
+ { return wxPoint(m_pos.x + m_size.x / 2 - 1, m_pos.y + m_size.y / 2 - 1); }
-void DnDFrame::OnLogClear(wxCommandEvent& /* event */ )
-{
- m_ctrlLog->Clear();
-}
+ struct ShapeDump
+ {
+ wxCoord x, y, // position
+ w, h; // size
+ int k; // kind
+ unsigned char r, g, b; // colour
+ };
+
+ wxPoint m_pos;
+ wxSize m_size;
+ wxColour m_col;
+};
-void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
+class DnDTriangularShape : public DnDShape
{
- if ( !m_strText.IsEmpty() )
+public:
+ DnDTriangularShape(const wxPoint& pos,
+ const wxSize& size,
+ const wxColour& col)
+ : DnDShape(pos, size, col)
{
- // start drag operation
-#ifdef __WXMSW__
- wxTextDataObject textData(m_strText);
- wxDropSource dragSource( textData, this );
-#else
- wxDropSource dragSource( new wxTextDataObject (m_strText), this, wxIcon(mondrian_xpm) );
-#endif
- const char *pc;
-
- switch ( dragSource.DoDragDrop(TRUE) )
- {
- case wxDragError: pc = "Error!"; break;
- case wxDragNone: pc = "Nothing"; break;
- case wxDragCopy: pc = "Copied"; break;
- case wxDragMove: pc = "Moved"; break;
- case wxDragCancel: pc = "Cancelled"; break;
- default: pc = "Huh?"; break;
- }
+ wxLogMessage(wxT("DnDTriangularShape is being created"));
+ }
- SetStatusText(wxString("Drag result: ") + pc);
+ virtual ~DnDTriangularShape()
+ {
+ wxLogMessage(wxT("DnDTriangularShape is being deleted"));
}
-}
-void DnDFrame::OnRightDown(wxMouseEvent &event )
-{
- wxMenu *menu = new wxMenu;
+ virtual Kind GetKind() const { return Triangle; }
+ virtual void Draw(wxDC& dc)
+ {
+ DnDShape::Draw(dc);
- menu->Append(Menu_Drag, "&Test drag...");
- menu->Append(Menu_About, "&About");
- menu->Append(Menu_Quit, "E&xit");
+ // well, it's a bit difficult to describe a triangle by position and
+ // size, but we're not doing geometry here, do we? ;-)
+ wxPoint p1(m_pos);
+ wxPoint p2(m_pos.x + m_size.x, m_pos.y);
+ wxPoint p3(m_pos.x, m_pos.y + m_size.y);
- PopupMenu( menu, event.GetX(), event.GetY() );
-}
+ dc.DrawLine(p1, p2);
+ dc.DrawLine(p2, p3);
+ dc.DrawLine(p3, p1);
-DnDFrame::~DnDFrame()
+ //works in multicolor modes; on GTK (at least) will fail in 16-bit color
+ dc.SetBrush(wxBrush(m_col));
+ dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
+ }
+};
+
+class DnDRectangularShape : public DnDShape
{
-#if wxUSE_STD_IOSTREAM
- if ( m_pLog != NULL ) {
- if ( wxLog::SetActiveTarget(m_pLogPrev) == m_pLog )
- delete m_pLog;
+public:
+ DnDRectangularShape(const wxPoint& pos,
+ const wxSize& size,
+ const wxColour& col)
+ : DnDShape(pos, size, col)
+ {
+ wxLogMessage(wxT("DnDRectangularShape is being created"));
}
-#endif
-}
-// ---------------------------------------------------------------------------
-// clipboard
-// ---------------------------------------------------------------------------
+ virtual ~DnDRectangularShape()
+ {
+ wxLogMessage(wxT("DnDRectangularShape is being deleted"));
+ }
-void DnDFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
-{
- if ( !wxTheClipboard->Open() )
+ virtual Kind GetKind() const { return Rectangle; }
+ virtual void Draw(wxDC& dc)
{
- wxLogError("Can't open clipboard.");
+ DnDShape::Draw(dc);
- return;
+ wxPoint p1(m_pos);
+ wxPoint p2(p1.x + m_size.x, p1.y);
+ wxPoint p3(p2.x, p2.y + m_size.y);
+ wxPoint p4(p1.x, p3.y);
+
+ dc.DrawLine(p1, p2);
+ dc.DrawLine(p2, p3);
+ dc.DrawLine(p3, p4);
+ dc.DrawLine(p4, p1);
+
+ dc.SetBrush(wxBrush(m_col));
+ dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
}
+};
- if ( !wxTheClipboard->AddData(new wxTextDataObject(m_strText)) )
+class DnDEllipticShape : public DnDShape
+{
+public:
+ DnDEllipticShape(const wxPoint& pos,
+ const wxSize& size,
+ const wxColour& col)
+ : DnDShape(pos, size, col)
{
- wxLogError("Can't copy data to the clipboard");
+ wxLogMessage(wxT("DnDEllipticShape is being created"));
}
- else
+
+ virtual ~DnDEllipticShape()
{
- wxLogMessage("Text '%s' put on the clipboard", m_strText.c_str());
+ wxLogMessage(wxT("DnDEllipticShape is being deleted"));
}
- wxTheClipboard->Close();
-}
+ virtual Kind GetKind() const { return Ellipse; }
+ virtual void Draw(wxDC& dc)
+ {
+ DnDShape::Draw(dc);
-void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
+ dc.DrawEllipse(m_pos, m_size);
+
+ dc.SetBrush(wxBrush(m_col));
+ dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
+ }
+};
+
+// ----------------------------------------------------------------------------
+// A wxDataObject specialisation for the application-specific data
+// ----------------------------------------------------------------------------
+
+static const wxChar *shapeFormatId = wxT("wxShape");
+
+class DnDShapeDataObject : public wxDataObject
{
- if ( !wxTheClipboard->Open() )
+public:
+ // ctor doesn't copy the pointer, so it shouldn't go away while this object
+ // is alive
+ DnDShapeDataObject(DnDShape *shape = (DnDShape *)NULL)
{
- wxLogError("Can't open clipboard.");
+ if ( shape )
+ {
+ // we need to copy the shape because the one we're handled may be
+ // deleted while it's still on the clipboard (for example) - and we
+ // reuse the serialisation methods here to copy it
+ void *buf = malloc(shape->DnDShape::GetDataSize());
+ shape->GetDataHere(buf);
+ m_shape = DnDShape::New(buf);
+
+ free(buf);
+ }
+ else
+ {
+ // nothing to copy
+ m_shape = NULL;
+ }
- return;
+ // this string should uniquely identify our format, but is otherwise
+ // arbitrary
+ m_formatShape.SetId(shapeFormatId);
+
+ // we don't draw the shape to a bitmap until it's really needed (i.e.
+ // we're asked to do so)
+ m_hasBitmap = false;
+#if wxUSE_METAFILE
+ m_hasMetaFile = false;
+#endif // wxUSE_METAFILE
}
- if ( !wxTheClipboard->IsSupported(wxDF_TEXT) )
+ virtual ~DnDShapeDataObject() { delete m_shape; }
+
+ // after a call to this function, the shape is owned by the caller and it
+ // is responsible for deleting it!
+ //
+ // NB: a better solution would be to make DnDShapes ref counted and this
+ // is what should probably be done in a real life program, otherwise
+ // the ownership problems become too complicated really fast
+ DnDShape *GetShape()
{
- wxLogWarning("No text data on clipboard");
+ DnDShape *shape = m_shape;
- return;
+ m_shape = (DnDShape *)NULL;
+ m_hasBitmap = false;
+#if wxUSE_METAFILE
+ m_hasMetaFile = false;
+#endif // wxUSE_METAFILE
+
+ return shape;
}
- wxTextDataObject text;
- if ( !wxTheClipboard->GetData(&text) )
+ // implement base class pure virtuals
+ // ----------------------------------
+
+ virtual wxDataFormat GetPreferredFormat(Direction WXUNUSED(dir)) const
{
- wxLogError("Can't paste data from the clipboard");
+ return m_formatShape;
}
- else
+
+ virtual size_t GetFormatCount(Direction dir) const
{
- wxLogMessage("Text '%s' pasted from the clipboard",
- text.GetText().c_str());
+ // our custom format is supported by both GetData() and SetData()
+ size_t nFormats = 1;
+ if ( dir == Get )
+ {
+ // but the bitmap format(s) are only supported for output
+ nFormats += m_dobjBitmap.GetFormatCount(dir);
+
+#if wxUSE_METAFILE
+ nFormats += m_dobjMetaFile.GetFormatCount(dir);
+#endif // wxUSE_METAFILE
+ }
+
+ return nFormats;
}
- wxTheClipboard->Close();
-}
+ virtual void GetAllFormats(wxDataFormat *formats, Direction dir) const
+ {
+ formats[0] = m_formatShape;
+ if ( dir == Get )
+ {
+ // in Get direction we additionally support bitmaps and metafiles
+ // under Windows
+ m_dobjBitmap.GetAllFormats(&formats[1], dir);
+
+#if wxUSE_METAFILE
+ // don't assume that m_dobjBitmap has only 1 format
+ m_dobjMetaFile.GetAllFormats(&formats[1 +
+ m_dobjBitmap.GetFormatCount(dir)], dir);
+#endif // wxUSE_METAFILE
+ }
+ }
-// ----------------------------------------------------------------------------
-// Notifications called by the base class
-// ----------------------------------------------------------------------------
-bool DnDText::OnDropText( wxDropPointCoord, wxDropPointCoord, const wxChar *psz )
-{
- m_pOwner->Append(psz);
+ virtual size_t GetDataSize(const wxDataFormat& format) const
+ {
+ if ( format == m_formatShape )
+ {
+ return m_shape->GetDataSize();
+ }
+#if wxUSE_METAFILE
+ else if ( m_dobjMetaFile.IsSupported(format) )
+ {
+ if ( !m_hasMetaFile )
+ CreateMetaFile();
- return TRUE;
-}
+ return m_dobjMetaFile.GetDataSize(format);
+ }
+#endif // wxUSE_METAFILE
+ else
+ {
+ wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
+ wxT("unexpected format") );
-bool DnDFile::OnDropFiles( wxDropPointCoord, wxDropPointCoord, size_t nFiles,
- const wxChar* const aszFiles[])
-{
- wxString str;
- str.Printf( _T("%d files dropped"), nFiles);
- m_pOwner->Append(str);
- for ( size_t n = 0; n < nFiles; n++ ) {
- m_pOwner->Append(aszFiles[n]);
+ if ( !m_hasBitmap )
+ CreateBitmap();
+
+ return m_dobjBitmap.GetDataSize();
+ }
}
- return TRUE;
-}
+ virtual bool GetDataHere(const wxDataFormat& format, void *pBuf) const
+ {
+ if ( format == m_formatShape )
+ {
+ m_shape->GetDataHere(pBuf);
+
+ return true;
+ }
+#if wxUSE_METAFILE
+ else if ( m_dobjMetaFile.IsSupported(format) )
+ {
+ if ( !m_hasMetaFile )
+ CreateMetaFile();
+
+ return m_dobjMetaFile.GetDataHere(format, pBuf);
+ }
+#endif // wxUSE_METAFILE
+ else
+ {
+ wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
+ wxT("unexpected format") );
+
+ if ( !m_hasBitmap )
+ CreateBitmap();
+
+ return m_dobjBitmap.GetDataHere(pBuf);
+ }
+ }
+
+ virtual bool SetData(const wxDataFormat& format,
+ size_t WXUNUSED(len), const void *buf)
+ {
+ wxCHECK_MSG( format == m_formatShape, false,
+ wxT( "unsupported format") );
+
+ delete m_shape;
+ m_shape = DnDShape::New(buf);
+
+ // the shape has changed
+ m_hasBitmap = false;
+
+#if wxUSE_METAFILE
+ m_hasMetaFile = false;
+#endif // wxUSE_METAFILE
+
+ return true;
+ }
+
+private:
+ // creates a bitmap and assigns it to m_dobjBitmap (also sets m_hasBitmap)
+ void CreateBitmap() const;
+#if wxUSE_METAFILE
+ void CreateMetaFile() const;
+#endif // wxUSE_METAFILE
+
+ wxDataFormat m_formatShape; // our custom format
+
+ wxBitmapDataObject m_dobjBitmap; // it handles bitmaps
+ bool m_hasBitmap; // true if m_dobjBitmap has valid bitmap
+
+#if wxUSE_METAFILE
+ wxMetaFileDataObject m_dobjMetaFile;// handles metafiles
+ bool m_hasMetaFile; // true if we have valid metafile
+#endif // wxUSE_METAFILE
+
+ DnDShape *m_shape; // our data
+};
+
+// ----------------------------------------------------------------------------
+// A dialog to edit shape properties
+// ----------------------------------------------------------------------------
+
+class DnDShapeDialog : public wxDialog
+{
+public:
+ DnDShapeDialog(wxFrame *parent, DnDShape *shape);
+
+ DnDShape *GetShape() const;
+
+ virtual bool TransferDataToWindow();
+ virtual bool TransferDataFromWindow();
+
+ void OnColour(wxCommandEvent& event);
+
+private:
+ // input
+ DnDShape *m_shape;
+
+ // output
+ DnDShape::Kind m_shapeKind;
+ wxPoint m_pos;
+ wxSize m_size;
+ wxColour m_col;
+
+ // controls
+ wxRadioBox *m_radio;
+ wxTextCtrl *m_textX,
+ *m_textY,
+ *m_textW,
+ *m_textH;
+
+ DECLARE_EVENT_TABLE()
+};
+
+// ----------------------------------------------------------------------------
+// A frame for the shapes which can be drag-and-dropped between frames
+// ----------------------------------------------------------------------------
+
+class DnDShapeFrame : public wxFrame
+{
+public:
+ DnDShapeFrame(wxFrame *parent);
+ ~DnDShapeFrame();
+
+ void SetShape(DnDShape *shape);
+ virtual bool SetShape(const wxRegion ®ion)
+ {
+ return wxFrame::SetShape( region );
+ }
+
+ // callbacks
+ void OnNewShape(wxCommandEvent& event);
+ void OnEditShape(wxCommandEvent& event);
+ void OnClearShape(wxCommandEvent& event);
+
+ void OnCopyShape(wxCommandEvent& event);
+ void OnPasteShape(wxCommandEvent& event);
+
+ void OnUpdateUICopy(wxUpdateUIEvent& event);
+ void OnUpdateUIPaste(wxUpdateUIEvent& event);
+
+ void OnDrag(wxMouseEvent& event);
+ void OnPaint(wxPaintEvent& event);
+ void OnDrop(wxCoord x, wxCoord y, DnDShape *shape);
+
+private:
+ DnDShape *m_shape;
+
+ static DnDShapeFrame *ms_lastDropTarget;
+
+ DECLARE_EVENT_TABLE()
+};
+
+// ----------------------------------------------------------------------------
+// wxDropTarget derivation for DnDShapes
+// ----------------------------------------------------------------------------
+
+class DnDShapeDropTarget : public wxDropTarget
+{
+public:
+ DnDShapeDropTarget(DnDShapeFrame *frame)
+ : wxDropTarget(new DnDShapeDataObject)
+ {
+ m_frame = frame;
+ }
+
+ // override base class (pure) virtuals
+ virtual wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult def)
+ {
+#if wxUSE_STATUSBAR
+ m_frame->SetStatusText(wxT("Mouse entered the frame"));
+#endif // wxUSE_STATUSBAR
+ return OnDragOver(x, y, def);
+ }
+ virtual void OnLeave()
+ {
+#if wxUSE_STATUSBAR
+ m_frame->SetStatusText(wxT("Mouse left the frame"));
+#endif // wxUSE_STATUSBAR
+ }
+ virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def)
+ {
+ if ( !GetData() )
+ {
+ wxLogError(wxT("Failed to get drag and drop data"));
+
+ return wxDragNone;
+ }
+
+ m_frame->OnDrop(x, y,
+ ((DnDShapeDataObject *)GetDataObject())->GetShape());
+
+ return def;
+ }
+
+private:
+ DnDShapeFrame *m_frame;
+};
+
+#endif // wxUSE_DRAG_AND_DROP
+
+// ----------------------------------------------------------------------------
+// functions prototypes
+// ----------------------------------------------------------------------------
+
+static void ShowBitmap(const wxBitmap& bitmap);
+
+#if wxUSE_METAFILE
+static void ShowMetaFile(const wxMetaFile& metafile);
+#endif // wxUSE_METAFILE
+
+// ----------------------------------------------------------------------------
+// IDs for the menu commands
+// ----------------------------------------------------------------------------
+
+enum
+{
+ Menu_Quit = 1,
+ Menu_Drag,
+ Menu_DragMoveDef,
+ Menu_DragMoveAllow,
+ Menu_NewFrame,
+ Menu_About = 101,
+ Menu_Help,
+ Menu_Clear,
+ Menu_Copy,
+ Menu_Paste,
+ Menu_CopyBitmap,
+ Menu_PasteBitmap,
+ Menu_PasteMFile,
+ Menu_CopyFiles,
+ Menu_CopyURL,
+ Menu_UsePrimary,
+ Menu_Shape_New = 500,
+ Menu_Shape_Edit,
+ Menu_Shape_Clear,
+ Menu_ShapeClipboard_Copy,
+ Menu_ShapeClipboard_Paste,
+ Button_Colour = 1001
+};
+
+BEGIN_EVENT_TABLE(DnDFrame, wxFrame)
+ EVT_MENU(Menu_Quit, DnDFrame::OnQuit)
+ EVT_MENU(Menu_About, DnDFrame::OnAbout)
+ EVT_MENU(Menu_Drag, DnDFrame::OnDrag)
+ EVT_MENU(Menu_DragMoveDef, DnDFrame::OnDragMoveByDefault)
+ EVT_MENU(Menu_DragMoveAllow,DnDFrame::OnDragMoveAllow)
+ EVT_MENU(Menu_NewFrame, DnDFrame::OnNewFrame)
+ EVT_MENU(Menu_Help, DnDFrame::OnHelp)
+#if wxUSE_LOG
+ EVT_MENU(Menu_Clear, DnDFrame::OnLogClear)
+#endif // wxUSE_LOG
+ EVT_MENU(Menu_Copy, DnDFrame::OnCopy)
+ EVT_MENU(Menu_Paste, DnDFrame::OnPaste)
+ EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
+ EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
+#if wxUSE_METAFILE
+ EVT_MENU(Menu_PasteMFile, DnDFrame::OnPasteMetafile)
+#endif // wxUSE_METAFILE
+ EVT_MENU(Menu_CopyFiles, DnDFrame::OnCopyFiles)
+ EVT_MENU(Menu_CopyURL, DnDFrame::OnCopyURL)
+ EVT_MENU(Menu_UsePrimary, DnDFrame::OnUsePrimary)
+
+ EVT_UPDATE_UI(Menu_DragMoveDef, DnDFrame::OnUpdateUIMoveByDefault)
+
+ EVT_UPDATE_UI(Menu_Paste, DnDFrame::OnUpdateUIPasteText)
+ EVT_UPDATE_UI(Menu_PasteBitmap, DnDFrame::OnUpdateUIPasteBitmap)
+
+ EVT_LEFT_DOWN( DnDFrame::OnLeftDown)
+ EVT_RIGHT_DOWN( DnDFrame::OnRightDown)
+ EVT_PAINT( DnDFrame::OnPaint)
+ EVT_SIZE( DnDFrame::OnSize)
+END_EVENT_TABLE()
+
+#if wxUSE_DRAG_AND_DROP
+
+BEGIN_EVENT_TABLE(DnDShapeFrame, wxFrame)
+ EVT_MENU(Menu_Shape_New, DnDShapeFrame::OnNewShape)
+ EVT_MENU(Menu_Shape_Edit, DnDShapeFrame::OnEditShape)
+ EVT_MENU(Menu_Shape_Clear, DnDShapeFrame::OnClearShape)
+
+ EVT_MENU(Menu_ShapeClipboard_Copy, DnDShapeFrame::OnCopyShape)
+ EVT_MENU(Menu_ShapeClipboard_Paste, DnDShapeFrame::OnPasteShape)
+
+ EVT_UPDATE_UI(Menu_ShapeClipboard_Copy, DnDShapeFrame::OnUpdateUICopy)
+ EVT_UPDATE_UI(Menu_ShapeClipboard_Paste, DnDShapeFrame::OnUpdateUIPaste)
+
+ EVT_LEFT_DOWN(DnDShapeFrame::OnDrag)
+
+ EVT_PAINT(DnDShapeFrame::OnPaint)
+END_EVENT_TABLE()
+
+BEGIN_EVENT_TABLE(DnDShapeDialog, wxDialog)
+ EVT_BUTTON(Button_Colour, DnDShapeDialog::OnColour)
+END_EVENT_TABLE()
+
+#endif // wxUSE_DRAG_AND_DROP
+
+BEGIN_EVENT_TABLE(DnDCanvasBitmap, wxScrolledWindow)
+ EVT_PAINT(DnDCanvasBitmap::OnPaint)
+END_EVENT_TABLE()
+
+#if wxUSE_METAFILE
+BEGIN_EVENT_TABLE(DnDCanvasMetafile, wxScrolledWindow)
+ EVT_PAINT(DnDCanvasMetafile::OnPaint)
+END_EVENT_TABLE()
+#endif // wxUSE_METAFILE
+
+#endif // wxUSE_DRAG_AND_DROP
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// `Main program' equivalent, creating windows and returning main app frame
+bool DnDApp::OnInit()
+{
+ if ( !wxApp::OnInit() )
+ return false;
+
+#if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
+ // switch on trace messages
+#if wxUSE_LOG
+#if defined(__WXGTK__)
+ wxLog::AddTraceMask(wxT("clipboard"));
+#elif defined(__WXMSW__)
+ wxLog::AddTraceMask(wxTRACE_OleCalls);
+#endif
+#endif // wxUSE_LOG
+
+#if wxUSE_LIBPNG
+ wxImage::AddHandler( new wxPNGHandler );
+#endif
+
+ // create the main frame window
+ new DnDFrame();
+
+ return true;
+#else
+ wxMessageBox( wxT("This sample has to be compiled with wxUSE_DRAG_AND_DROP"), wxT("Building error"), wxOK);
+ return false;
+#endif // wxUSE_DRAG_AND_DROP
+}
+
+#if wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
+
+DnDFrame::DnDFrame()
+ : wxFrame(NULL, wxID_ANY, wxT("Drag-and-Drop/Clipboard wxWidgets Sample"),
+ wxPoint(10, 100)),
+ m_strText(wxT("wxWidgets drag & drop works :-)"))
+
+{
+ // frame icon and status bar
+ SetIcon(wxICON(sample));
+
+#if wxUSE_STATUSBAR
+ CreateStatusBar();
+#endif // wxUSE_STATUSBAR
+
+ // construct menu
+ wxMenu *file_menu = new wxMenu;
+ file_menu->Append(Menu_Drag, wxT("&Test drag..."));
+ file_menu->AppendCheckItem(Menu_DragMoveDef, wxT("&Move by default"));
+ file_menu->AppendCheckItem(Menu_DragMoveAllow, wxT("&Allow moving"));
+ file_menu->AppendSeparator();
+ file_menu->Append(Menu_NewFrame, wxT("&New frame\tCtrl-N"));
+ file_menu->AppendSeparator();
+ file_menu->Append(Menu_Quit, wxT("E&xit\tCtrl-Q"));
+
+#if wxUSE_LOG
+ wxMenu *log_menu = new wxMenu;
+ log_menu->Append(Menu_Clear, wxT("Clear\tCtrl-L"));
+#endif // wxUSE_LOG
+
+ wxMenu *help_menu = new wxMenu;
+ help_menu->Append(Menu_Help, wxT("&Help..."));
+ help_menu->AppendSeparator();
+ help_menu->Append(Menu_About, wxT("&About"));
+
+ wxMenu *clip_menu = new wxMenu;
+ clip_menu->Append(Menu_Copy, wxT("&Copy text\tCtrl-C"));
+ clip_menu->Append(Menu_Paste, wxT("&Paste text\tCtrl-V"));
+ clip_menu->AppendSeparator();
+ clip_menu->Append(Menu_CopyBitmap, wxT("Copy &bitmap\tCtrl-Shift-C"));
+ clip_menu->Append(Menu_PasteBitmap, wxT("Paste b&itmap\tCtrl-Shift-V"));
+#if wxUSE_METAFILE
+ clip_menu->AppendSeparator();
+ clip_menu->Append(Menu_PasteMFile, wxT("Paste &metafile\tCtrl-M"));
+#endif // wxUSE_METAFILE
+ clip_menu->AppendSeparator();
+ clip_menu->Append(Menu_CopyFiles, wxT("Copy &files\tCtrl-F"));
+ clip_menu->Append(Menu_CopyURL, wxT("Copy &URL\tCtrl-U"));
+ clip_menu->AppendSeparator();
+ clip_menu->AppendCheckItem(Menu_UsePrimary, wxT("Use &primary selection\tCtrl-P"));
+
+ wxMenuBar *menu_bar = new wxMenuBar;
+ menu_bar->Append(file_menu, wxT("&File"));
+#if wxUSE_LOG
+ menu_bar->Append(log_menu, wxT("&Log"));
+#endif // wxUSE_LOG
+ menu_bar->Append(clip_menu, wxT("&Clipboard"));
+ menu_bar->Append(help_menu, wxT("&Help"));
+
+ SetMenuBar(menu_bar);
+
+ // create the child controls
+ SetBackgroundColour(*wxWHITE); // labels read better on this background
+
+ wxString strFile(wxT("Drop files here!")), strText(wxT("Drop text on me"));
+
+ m_ctrlFile = new wxListBox(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, 1, &strFile,
+ wxLB_HSCROLL | wxLB_ALWAYS_SB );
+ m_ctrlText = new wxListBox(this, wxID_ANY, wxDefaultPosition, wxDefaultSize, 1, &strText,
+ wxLB_HSCROLL | wxLB_ALWAYS_SB );
+ m_ctrlDir = new wxGenericDirCtrl(this);
+
+#if wxUSE_LOG
+ m_ctrlLog = new wxTextCtrl(this, wxID_ANY, wxEmptyString,
+ wxDefaultPosition, wxDefaultSize,
+ wxTE_MULTILINE | wxTE_READONLY |
+ wxSUNKEN_BORDER );
+
+ // redirect log messages to the text window
+ m_pLog = new wxLogTextCtrl(m_ctrlLog);
+ m_pLogPrev = wxLog::SetActiveTarget(m_pLog);
+#endif // wxUSE_LOG
+
+#if wxUSE_DRAG_AND_DROP
+ // associate drop targets with the controls
+ m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
+ m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));
+
+#if wxUSE_DRAG_AND_DROP
+ m_ctrlDir->Connect
+ (
+ wxID_ANY,
+ wxEVT_TREE_BEGIN_DRAG,
+ wxTreeEventHandler(DnDFrame::OnBeginDrag),
+ NULL,
+ this
+ );
+#endif // wxUSE_DRAG_AND_DROP
+
+#if wxUSE_LOG
+ m_ctrlLog->SetDropTarget(new URLDropTarget);
+#endif // wxUSE_LOG
+#endif // wxUSE_DRAG_AND_DROP
+
+ wxBoxSizer *sizer_top = new wxBoxSizer( wxHORIZONTAL );
+ sizer_top->Add(m_ctrlFile, 1, wxEXPAND );
+ sizer_top->Add(m_ctrlText, 1, wxEXPAND );
+
+ wxBoxSizer *sizerDirCtrl = new wxBoxSizer(wxVERTICAL);
+ sizerDirCtrl->Add(new wxStaticText(this, wxID_ANY, "Drag files from here"),
+ wxSizerFlags().Centre().Border());
+ sizerDirCtrl->Add(m_ctrlDir, wxSizerFlags(1).Expand());
+ sizer_top->Add(sizerDirCtrl, 1, wxEXPAND );
+
+ // make all columns of reasonable minimal size
+ for ( unsigned n = 0; n < sizer_top->GetChildren().size(); n++ )
+ sizer_top->SetItemMinSize(n, 200, 300);
+
+ wxBoxSizer *sizer = new wxBoxSizer( wxVERTICAL );
+ sizer->Add(sizer_top, 1, wxEXPAND );
+#if wxUSE_LOG
+ sizer->Add(m_ctrlLog, 2, wxEXPAND);
+ sizer->SetItemMinSize(m_ctrlLog, 450, 200);
+#endif // wxUSE_LOG
+ sizer->AddSpacer(50);
+
+ // copy data by default but allow moving it as well
+ m_moveByDefault = false;
+ m_moveAllow = true;
+ menu_bar->Check(Menu_DragMoveAllow, true);
+
+ // set the correct size and show the frame
+ SetSizerAndFit(sizer);
+ Show();
+}
+
+void DnDFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
+{
+ Close(true);
+}
+
+void DnDFrame::OnSize(wxSizeEvent& event)
+{
+ Refresh();
+
+ event.Skip();
+}
+
+void DnDFrame::OnPaint(wxPaintEvent& WXUNUSED(event))
+{
+ int w = 0;
+ int h = 0;
+ GetClientSize( &w, &h );
+
+ wxPaintDC dc(this);
+ // dc.Clear(); -- this kills wxGTK
+ dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL, false, wxT("charter") ) );
+ dc.DrawText( wxT("Drag text from here!"), 100, h-50 );
+}
+
+void DnDFrame::OnUpdateUIMoveByDefault(wxUpdateUIEvent& event)
+{
+ // only can move by default if moving is allowed at all
+ event.Enable(m_moveAllow);
+}
+
+void DnDFrame::OnUpdateUIPasteText(wxUpdateUIEvent& event)
+{
+#ifdef __WXDEBUG__
+ // too many trace messages if we don't do it - this function is called
+ // very often
+ wxLogNull nolog;
+#endif
+
+ event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
+}
+
+void DnDFrame::OnUpdateUIPasteBitmap(wxUpdateUIEvent& event)
+{
+#ifdef __WXDEBUG__
+ // too many trace messages if we don't do it - this function is called
+ // very often
+ wxLogNull nolog;
+#endif
+
+ event.Enable( wxTheClipboard->IsSupported(wxDF_BITMAP) );
+}
+
+void DnDFrame::OnNewFrame(wxCommandEvent& WXUNUSED(event))
+{
+#if wxUSE_DRAG_AND_DROP
+ (new DnDShapeFrame(this))->Show(true);
+
+ wxLogStatus(this, wxT("Double click the new frame to select a shape for it"));
+#endif // wxUSE_DRAG_AND_DROP
+}
+
+void DnDFrame::OnDrag(wxCommandEvent& WXUNUSED(event))
+{
+#if wxUSE_DRAG_AND_DROP
+ wxString strText = wxGetTextFromUser
+ (
+ wxT("After you enter text in this dialog, press any mouse\n")
+ wxT("button in the bottom (empty) part of the frame and \n")
+ wxT("drag it anywhere - you will be in fact dragging the\n")
+ wxT("text object containing this text"),
+ wxT("Please enter some text"), m_strText, this
+ );
+
+ m_strText = strText;
+#endif // wxUSE_DRAG_AND_DROP
+}
+
+void DnDFrame::OnDragMoveByDefault(wxCommandEvent& event)
+{
+ m_moveByDefault = event.IsChecked();
+}
+
+void DnDFrame::OnDragMoveAllow(wxCommandEvent& event)
+{
+ m_moveAllow = event.IsChecked();
+}
+
+void DnDFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
+{
+ wxMessageBox(wxT("Drag-&-Drop Demo\n")
+ wxT("Please see \"Help|Help...\" for details\n")
+ wxT("Copyright (c) 1998 Vadim Zeitlin"),
+ wxT("About wxDnD"),
+ wxICON_INFORMATION | wxOK,
+ this);
+}
+
+void DnDFrame::OnHelp(wxCommandEvent& /* event */)
+{
+ wxMessageDialog dialog(this,
+ wxT("This small program demonstrates drag & drop support in wxWidgets. The program window\n")
+ wxT("consists of 3 parts: the bottom pane is for debug messages, so that you can see what's\n")
+ wxT("going on inside. The top part is split into 2 listboxes, the left one accepts files\n")
+ wxT("and the right one accepts text.\n")
+ wxT("\n")
+ wxT("To test wxDropTarget: open wordpad (write.exe), select some text in it and drag it to\n")
+ wxT("the right listbox (you'll notice the usual visual feedback, i.e. the cursor will change).\n")
+ wxT("Also, try dragging some files (you can select several at once) from Windows Explorer (or \n")
+ wxT("File Manager) to the left pane. Hold down Ctrl/Shift keys when you drop text (doesn't \n")
+ wxT("work with files) and see what changes.\n")
+ wxT("\n")
+ wxT("To test wxDropSource: just press any mouse button on the empty zone of the window and drag\n")
+ wxT("it to wordpad or any other droptarget accepting text (and of course you can just drag it\n")
+ wxT("to the right pane). Due to a lot of trace messages, the cursor might take some time to \n")
+ wxT("change, don't release the mouse button until it does. You can change the string being\n")
+ wxT("dragged in \"File|Test drag...\" dialog.\n")
+ wxT("\n")
+ wxT("\n")
+ wxT("Please send all questions/bug reports/suggestions &c to \n")
+ wxT("Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>"),
+ wxT("wxDnD Help"));
+
+ dialog.ShowModal();
+}
+
+#if wxUSE_LOG
+void DnDFrame::OnLogClear(wxCommandEvent& /* event */ )
+{
+ m_ctrlLog->Clear();
+ m_ctrlText->Clear();
+ m_ctrlFile->Clear();
+}
+#endif // wxUSE_LOG
+
+#if wxUSE_DRAG_AND_DROP
+
+void DnDFrame::LogDragResult(wxDragResult result)
+{
+#if wxUSE_STATUSBAR
+ const wxChar *pc;
+ switch ( result )
+ {
+ case wxDragError: pc = wxT("Error!"); break;
+ case wxDragNone: pc = wxT("Nothing"); break;
+ case wxDragCopy: pc = wxT("Copied"); break;
+ case wxDragMove: pc = wxT("Moved"); break;
+ case wxDragCancel: pc = wxT("Cancelled"); break;
+ default: pc = wxT("Huh?"); break;
+ }
+
+ SetStatusText(wxString(wxT("Drag result: ")) + pc);
+#else
+ wxUnusedVar(result);
+#endif // wxUSE_STATUSBAR
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+
+void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
+{
+#if wxUSE_DRAG_AND_DROP
+ if ( !m_strText.empty() )
+ {
+ // start drag operation
+ wxTextDataObject textData(m_strText);
+ wxDropSource source(textData, this,
+ wxDROP_ICON(dnd_copy),
+ wxDROP_ICON(dnd_move),
+ wxDROP_ICON(dnd_none));
+
+ int flags = 0;
+ if ( m_moveByDefault )
+ flags |= wxDrag_DefaultMove;
+ else if ( m_moveAllow )
+ flags |= wxDrag_AllowMove;
+
+ LogDragResult(source.DoDragDrop(flags));
+ }
+#endif // wxUSE_DRAG_AND_DROP
+}
+
+void DnDFrame::OnRightDown(wxMouseEvent &event )
+{
+ wxMenu menu(wxT("Dnd sample menu"));
+
+ menu.Append(Menu_Drag, wxT("&Test drag..."));
+ menu.AppendSeparator();
+ menu.Append(Menu_About, wxT("&About"));
+
+ PopupMenu( &menu, event.GetX(), event.GetY() );
+}
+
+DnDFrame::~DnDFrame()
+{
+#if wxUSE_LOG
+ if ( m_pLog != NULL ) {
+ if ( wxLog::SetActiveTarget(m_pLogPrev) == m_pLog )
+ delete m_pLog;
+ }
+#endif // wxUSE_LOG
+}
+
+void DnDFrame::OnUsePrimary(wxCommandEvent& event)
+{
+ const bool usePrimary = event.IsChecked();
+ wxTheClipboard->UsePrimarySelection(usePrimary);
+
+ wxLogStatus(wxT("Now using %s selection"), usePrimary ? wxT("primary")
+ : wxT("clipboard"));
+}
+
+#if wxUSE_DRAG_AND_DROP
+
+void DnDFrame::OnBeginDrag(wxTreeEvent& WXUNUSED(event))
+{
+ wxFileDataObject data;
+ data.AddFile(m_ctrlDir->GetPath());
+
+ wxDropSource dragSource(this);
+ dragSource.SetData(data);
+
+ LogDragResult(dragSource.DoDragDrop());
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+
+// ---------------------------------------------------------------------------
+// bitmap clipboard
+// ---------------------------------------------------------------------------
+
+void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event))
+{
+ // PNG support is not always compiled in under Windows, so use BMP there
+#if wxUSE_LIBPNG
+ wxFileDialog dialog(this, wxT("Open a PNG file"), wxEmptyString, wxEmptyString, wxT("PNG files (*.png)|*.png"), 0);
+#else
+ wxFileDialog dialog(this, wxT("Open a BMP file"), wxEmptyString, wxEmptyString, wxT("BMP files (*.bmp)|*.bmp"), 0);
+#endif
+
+ if (dialog.ShowModal() != wxID_OK)
+ {
+ wxLogMessage( wxT("Aborted file open") );
+ return;
+ }
+
+ if (dialog.GetPath().empty())
+ {
+ wxLogMessage( wxT("Returned empty string.") );
+ return;
+ }
+
+ if (!wxFileExists(dialog.GetPath()))
+ {
+ wxLogMessage( wxT("File doesn't exist.") );
+ return;
+ }
+
+ wxImage image;
+ image.LoadFile( dialog.GetPath(),
+#if wxUSE_LIBPNG
+ wxBITMAP_TYPE_PNG
+#else
+ wxBITMAP_TYPE_BMP
+#endif
+ );
+ if (!image.IsOk())
+ {
+ wxLogError( wxT("Invalid image file...") );
+ return;
+ }
+
+ wxLogStatus( wxT("Decoding image file...") );
+ wxYield();
+
+ wxBitmap bitmap( image );
+
+ if ( !wxTheClipboard->Open() )
+ {
+ wxLogError(wxT("Can't open clipboard."));
+
+ return;
+ }
+
+ wxLogMessage( wxT("Creating wxBitmapDataObject...") );
+ wxYield();
+
+ if ( !wxTheClipboard->AddData(new wxBitmapDataObject(bitmap)) )
+ {
+ wxLogError(wxT("Can't copy image to the clipboard."));
+ }
+ else
+ {
+ wxLogMessage(wxT("Image has been put on the clipboard.") );
+ wxLogMessage(wxT("You can paste it now and look at it.") );
+ }
+
+ wxTheClipboard->Close();
+}
+
+void DnDFrame::OnPasteBitmap(wxCommandEvent& WXUNUSED(event))
+{
+ if ( !wxTheClipboard->Open() )
+ {
+ wxLogError(wxT("Can't open clipboard."));
+
+ return;
+ }
+
+ if ( !wxTheClipboard->IsSupported(wxDF_BITMAP) )
+ {
+ wxLogWarning(wxT("No bitmap on clipboard"));
+
+ wxTheClipboard->Close();
+ return;
+ }
+
+ wxBitmapDataObject data;
+ if ( !wxTheClipboard->GetData(data) )
+ {
+ wxLogError(wxT("Can't paste bitmap from the clipboard"));
+ }
+ else
+ {
+ const wxBitmap& bmp = data.GetBitmap();
+
+ wxLogMessage(wxT("Bitmap %dx%d pasted from the clipboard"),
+ bmp.GetWidth(), bmp.GetHeight());
+ ShowBitmap(bmp);
+ }
+
+ wxTheClipboard->Close();
+}
+
+#if wxUSE_METAFILE
+
+void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event))
+{
+ if ( !wxTheClipboard->Open() )
+ {
+ wxLogError(wxT("Can't open clipboard."));
+
+ return;
+ }
+
+ if ( !wxTheClipboard->IsSupported(wxDF_METAFILE) )
+ {
+ wxLogWarning(wxT("No metafile on clipboard"));
+ }
+ else
+ {
+ wxMetaFileDataObject data;
+ if ( !wxTheClipboard->GetData(data) )
+ {
+ wxLogError(wxT("Can't paste metafile from the clipboard"));
+ }
+ else
+ {
+ const wxMetaFile& mf = data.GetMetafile();
+
+ wxLogMessage(wxT("Metafile %dx%d pasted from the clipboard"),
+ mf.GetWidth(), mf.GetHeight());
+
+ ShowMetaFile(mf);
+ }
+ }
+
+ wxTheClipboard->Close();
+}
+
+#endif // wxUSE_METAFILE
+
+// ----------------------------------------------------------------------------
+// file clipboard
+// ----------------------------------------------------------------------------
+
+void DnDFrame::OnCopyFiles(wxCommandEvent& WXUNUSED(event))
+{
+#ifdef __WXMSW__
+ wxFileDialog dialog(this, wxT("Select a file to copy"), wxEmptyString, wxEmptyString,
+ wxT("All files (*.*)|*.*"), 0);
+
+ wxArrayString filenames;
+ while ( dialog.ShowModal() == wxID_OK )
+ {
+ filenames.Add(dialog.GetPath());
+ }
+
+ if ( !filenames.IsEmpty() )
+ {
+ wxFileDataObject *dobj = new wxFileDataObject;
+ size_t count = filenames.GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ dobj->AddFile(filenames[n]);
+ }
+
+ wxClipboardLocker locker;
+ if ( !locker )
+ {
+ wxLogError(wxT("Can't open clipboard"));
+ }
+ else
+ {
+ if ( !wxTheClipboard->AddData(dobj) )
+ {
+ wxLogError(wxT("Can't copy file(s) to the clipboard"));
+ }
+ else
+ {
+ wxLogStatus(this, wxT("%d file%s copied to the clipboard"),
+ count, count == 1 ? wxEmptyString : wxEmptyString);
+ }
+ }
+ }
+ else
+ {
+ wxLogStatus(this, wxT("Aborted"));
+ }
+#else // !MSW
+ wxLogError(wxT("Sorry, not implemented"));
+#endif // MSW/!MSW
+}
+
+void DnDFrame::OnCopyURL(wxCommandEvent& WXUNUSED(event))
+{
+ // Just hard code it for now, we could ask the user but the point here is
+ // to test copying URLs, it doesn't really matter what it is.
+ const wxString url("http://www.wxwidgets.org/");
+
+ wxClipboardLocker locker;
+ if ( !!locker && wxTheClipboard->AddData(new wxURLDataObject(url)) )
+ {
+ wxLogStatus(this, "Copied URL \"%s\" to %s.",
+ url,
+ GetMenuBar()->IsChecked(Menu_UsePrimary)
+ ? "primary selection"
+ : "clipboard");
+ }
+ else
+ {
+ wxLogError("Failed to copy URL.");
+ }
+}
+
+// ---------------------------------------------------------------------------
+// text clipboard
+// ---------------------------------------------------------------------------
+
+void DnDFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
+{
+ if ( !wxTheClipboard->Open() )
+ {
+ wxLogError(wxT("Can't open clipboard."));
+
+ return;
+ }
+
+ if ( !wxTheClipboard->AddData(new wxTextDataObject(m_strText)) )
+ {
+ wxLogError(wxT("Can't copy data to the clipboard"));
+ }
+ else
+ {
+ wxLogMessage(wxT("Text '%s' put on the clipboard"), m_strText.c_str());
+ }
+
+ wxTheClipboard->Close();
+}
+
+void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
+{
+ if ( !wxTheClipboard->Open() )
+ {
+ wxLogError(wxT("Can't open clipboard."));
+
+ return;
+ }
+
+ if ( !wxTheClipboard->IsSupported(wxDF_TEXT) )
+ {
+ wxLogWarning(wxT("No text data on clipboard"));
+
+ wxTheClipboard->Close();
+ return;
+ }
+
+ wxTextDataObject text;
+ if ( !wxTheClipboard->GetData(text) )
+ {
+ wxLogError(wxT("Can't paste data from the clipboard"));
+ }
+ else
+ {
+ wxLogMessage(wxT("Text '%s' pasted from the clipboard"),
+ text.GetText().c_str());
+ }
+
+ wxTheClipboard->Close();
+}
+
+#if wxUSE_DRAG_AND_DROP
+
+// ----------------------------------------------------------------------------
+// Notifications called by the base class
+// ----------------------------------------------------------------------------
+
+bool DnDText::OnDropText(wxCoord, wxCoord, const wxString& text)
+{
+ m_pOwner->Append(text);
+
+ return true;
+}
+
+bool DnDFile::OnDropFiles(wxCoord, wxCoord, const wxArrayString& filenames)
+{
+ size_t nFiles = filenames.GetCount();
+ wxString str;
+ str.Printf( wxT("%d files dropped"), (int)nFiles);
+
+ if (m_pOwner != NULL)
+ {
+ m_pOwner->Append(str);
+ for ( size_t n = 0; n < nFiles; n++ )
+ m_pOwner->Append(filenames[n]);
+ }
+
+ return true;
+}
+
+// ----------------------------------------------------------------------------
+// DnDShapeDialog
+// ----------------------------------------------------------------------------
+
+DnDShapeDialog::DnDShapeDialog(wxFrame *parent, DnDShape *shape)
+ :wxDialog( parent, 6001, wxT("Choose Shape"), wxPoint( 10, 10 ),
+ wxSize( 40, 40 ),
+ wxDEFAULT_DIALOG_STYLE | wxRAISED_BORDER | wxRESIZE_BORDER )
+{
+ m_shape = shape;
+ wxBoxSizer* topSizer = new wxBoxSizer( wxVERTICAL );
+
+ // radio box
+ wxBoxSizer* shapesSizer = new wxBoxSizer( wxHORIZONTAL );
+ const wxString choices[] = { wxT("None"), wxT("Triangle"),
+ wxT("Rectangle"), wxT("Ellipse") };
+
+ m_radio = new wxRadioBox( this, wxID_ANY, wxT("&Shape"),
+ wxDefaultPosition, wxDefaultSize, 4, choices, 4,
+ wxRA_SPECIFY_COLS );
+ shapesSizer->Add( m_radio, 0, wxGROW|wxALL, 5 );
+ topSizer->Add( shapesSizer, 0, wxALL, 2 );
+
+ // attributes
+ wxStaticBox* box = new wxStaticBox( this, wxID_ANY, wxT("&Attributes") );
+ wxStaticBoxSizer* attrSizer = new wxStaticBoxSizer( box, wxHORIZONTAL );
+ wxFlexGridSizer* xywhSizer = new wxFlexGridSizer( 2 );
+
+ wxStaticText* st;
+
+ st = new wxStaticText( this, wxID_ANY, wxT("Position &X:") );
+ m_textX = new wxTextCtrl( this, wxID_ANY, wxEmptyString, wxDefaultPosition,
+ wxSize( 30, 20 ) );
+ xywhSizer->Add( st, 1, wxGROW|wxALL, 2 );
+ xywhSizer->Add( m_textX, 1, wxGROW|wxALL, 2 );
+
+ st = new wxStaticText( this, wxID_ANY, wxT("Size &width:") );
+ m_textW = new wxTextCtrl( this, wxID_ANY, wxEmptyString, wxDefaultPosition,
+ wxSize( 30, 20 ) );
+ xywhSizer->Add( st, 1, wxGROW|wxALL, 2 );
+ xywhSizer->Add( m_textW, 1, wxGROW|wxALL, 2 );
+
+ st = new wxStaticText( this, wxID_ANY, wxT("&Y:") );
+ m_textY = new wxTextCtrl( this, wxID_ANY, wxEmptyString, wxDefaultPosition,
+ wxSize( 30, 20 ) );
+ xywhSizer->Add( st, 1, wxALL|wxALIGN_RIGHT, 2 );
+ xywhSizer->Add( m_textY, 1, wxGROW|wxALL, 2 );
+
+ st = new wxStaticText( this, wxID_ANY, wxT("&height:") );
+ m_textH = new wxTextCtrl( this, wxID_ANY, wxEmptyString, wxDefaultPosition,
+ wxSize( 30, 20 ) );
+ xywhSizer->Add( st, 1, wxALL|wxALIGN_RIGHT, 2 );
+ xywhSizer->Add( m_textH, 1, wxGROW|wxALL, 2 );
+
+ wxButton* col = new wxButton( this, Button_Colour, wxT("&Colour...") );
+ attrSizer->Add( xywhSizer, 1, wxGROW );
+ attrSizer->Add( col, 0, wxALL|wxALIGN_CENTRE_VERTICAL, 2 );
+ topSizer->Add( attrSizer, 0, wxGROW|wxALL, 5 );
+
+ // buttons
+ wxBoxSizer* buttonSizer = new wxBoxSizer( wxHORIZONTAL );
+ wxButton* bt;
+ bt = new wxButton( this, wxID_OK, wxT("Ok") );
+ buttonSizer->Add( bt, 0, wxALL, 2 );
+ bt = new wxButton( this, wxID_CANCEL, wxT("Cancel") );
+ buttonSizer->Add( bt, 0, wxALL, 2 );
+ topSizer->Add( buttonSizer, 0, wxALL|wxALIGN_RIGHT, 2 );
+
+ SetSizerAndFit( topSizer );
+}
+
+DnDShape *DnDShapeDialog::GetShape() const
+{
+ switch ( m_shapeKind )
+ {
+ default:
+ case DnDShape::None: return NULL;
+ case DnDShape::Triangle: return new DnDTriangularShape(m_pos, m_size, m_col);
+ case DnDShape::Rectangle: return new DnDRectangularShape(m_pos, m_size, m_col);
+ case DnDShape::Ellipse: return new DnDEllipticShape(m_pos, m_size, m_col);
+ }
+}
+
+bool DnDShapeDialog::TransferDataToWindow()
+{
+
+ if ( m_shape )
+ {
+ m_radio->SetSelection(m_shape->GetKind());
+ m_pos = m_shape->GetPosition();
+ m_size = m_shape->GetSize();
+ m_col = m_shape->GetColour();
+ }
+ else
+ {
+ m_radio->SetSelection(DnDShape::None);
+ m_pos = wxPoint(1, 1);
+ m_size = wxSize(100, 100);
+ }
+
+ m_textX->SetValue(wxString() << m_pos.x);
+ m_textY->SetValue(wxString() << m_pos.y);
+ m_textW->SetValue(wxString() << m_size.x);
+ m_textH->SetValue(wxString() << m_size.y);
+
+ return true;
+}
+
+bool DnDShapeDialog::TransferDataFromWindow()
+{
+ m_shapeKind = (DnDShape::Kind)m_radio->GetSelection();
+
+ m_pos.x = wxAtoi(m_textX->GetValue());
+ m_pos.y = wxAtoi(m_textY->GetValue());
+ m_size.x = wxAtoi(m_textW->GetValue());
+ m_size.y = wxAtoi(m_textH->GetValue());
+
+ if ( !m_pos.x || !m_pos.y || !m_size.x || !m_size.y )
+ {
+ wxMessageBox(wxT("All sizes and positions should be non null!"),
+ wxT("Invalid shape"), wxICON_HAND | wxOK, this);
+
+ return false;
+ }
+
+ return true;
+}
+
+void DnDShapeDialog::OnColour(wxCommandEvent& WXUNUSED(event))
+{
+ wxColourData data;
+ data.SetChooseFull(true);
+ for (int i = 0; i < 16; i++)
+ {
+ wxColour colour((unsigned char)(i*16), (unsigned char)(i*16), (unsigned char)(i*16));
+ data.SetCustomColour(i, colour);
+ }
+
+ wxColourDialog dialog(this, &data);
+ if ( dialog.ShowModal() == wxID_OK )
+ {
+ m_col = dialog.GetColourData().GetColour();
+ }
+}
+
+// ----------------------------------------------------------------------------
+// DnDShapeFrame
+// ----------------------------------------------------------------------------
+
+DnDShapeFrame *DnDShapeFrame::ms_lastDropTarget = NULL;
+
+DnDShapeFrame::DnDShapeFrame(wxFrame *parent)
+ : wxFrame(parent, wxID_ANY, wxT("Shape Frame"))
+{
+#if wxUSE_STATUSBAR
+ CreateStatusBar();
+#endif // wxUSE_STATUSBAR
+
+ wxMenu *menuShape = new wxMenu;
+ menuShape->Append(Menu_Shape_New, wxT("&New default shape\tCtrl-S"));
+ menuShape->Append(Menu_Shape_Edit, wxT("&Edit shape\tCtrl-E"));
+ menuShape->AppendSeparator();
+ menuShape->Append(Menu_Shape_Clear, wxT("&Clear shape\tCtrl-L"));
+
+ wxMenu *menuClipboard = new wxMenu;
+ menuClipboard->Append(Menu_ShapeClipboard_Copy, wxT("&Copy\tCtrl-C"));
+ menuClipboard->Append(Menu_ShapeClipboard_Paste, wxT("&Paste\tCtrl-V"));
+
+ wxMenuBar *menubar = new wxMenuBar;
+ menubar->Append(menuShape, wxT("&Shape"));
+ menubar->Append(menuClipboard, wxT("&Clipboard"));
+
+ SetMenuBar(menubar);
+
+#if wxUSE_STATUSBAR
+ SetStatusText(wxT("Press Ctrl-S to create a new shape"));
+#endif // wxUSE_STATUSBAR
+
+ SetDropTarget(new DnDShapeDropTarget(this));
+
+ m_shape = NULL;
+
+ SetBackgroundColour(*wxWHITE);
+}
+
+DnDShapeFrame::~DnDShapeFrame()
+{
+ if (m_shape)
+ delete m_shape;
+}
+
+void DnDShapeFrame::SetShape(DnDShape *shape)
+{
+ if (m_shape)
+ delete m_shape;
+ m_shape = shape;
+ Refresh();
+}
+
+// callbacks
+void DnDShapeFrame::OnDrag(wxMouseEvent& event)
+{
+ if ( !m_shape )
+ {
+ event.Skip();
+
+ return;
+ }
+
+ // start drag operation
+ DnDShapeDataObject shapeData(m_shape);
+ wxDropSource source(shapeData, this);
+
+ const wxChar *pc = NULL;
+ switch ( source.DoDragDrop(true) )
+ {
+ default:
+ case wxDragError:
+ wxLogError(wxT("An error occurred during drag and drop operation"));
+ break;
+
+ case wxDragNone:
+#if wxUSE_STATUSBAR
+ SetStatusText(wxT("Nothing happened"));
+#endif // wxUSE_STATUSBAR
+ break;
+
+ case wxDragCopy:
+ pc = wxT("copied");
+ break;
+
+ case wxDragMove:
+ pc = wxT("moved");
+ if ( ms_lastDropTarget != this )
+ {
+ // don't delete the shape if we dropped it on ourselves!
+ SetShape(NULL);
+ }
+ break;
+
+ case wxDragCancel:
+#if wxUSE_STATUSBAR
+ SetStatusText(wxT("Drag and drop operation cancelled"));
+#endif // wxUSE_STATUSBAR
+ break;
+ }
+
+ if ( pc )
+ {
+#if wxUSE_STATUSBAR
+ SetStatusText(wxString(wxT("Shape successfully ")) + pc);
+#endif // wxUSE_STATUSBAR
+ }
+ //else: status text already set
+}
+
+void DnDShapeFrame::OnDrop(wxCoord x, wxCoord y, DnDShape *shape)
+{
+ ms_lastDropTarget = this;
+
+ wxPoint pt(x, y);
+
+#if wxUSE_STATUSBAR
+ wxString s;
+ s.Printf(wxT("Shape dropped at (%d, %d)"), pt.x, pt.y);
+ SetStatusText(s);
+#endif // wxUSE_STATUSBAR
+
+ shape->Move(pt);
+ SetShape(shape);
+}
+
+void DnDShapeFrame::OnEditShape(wxCommandEvent& WXUNUSED(event))
+{
+ DnDShapeDialog dlg(this, m_shape);
+ if ( dlg.ShowModal() == wxID_OK )
+ {
+ SetShape(dlg.GetShape());
+
+#if wxUSE_STATUSBAR
+ if ( m_shape )
+ {
+ SetStatusText(wxT("You can now drag the shape to another frame"));
+ }
+#endif // wxUSE_STATUSBAR
+ }
+}
+
+void DnDShapeFrame::OnNewShape(wxCommandEvent& WXUNUSED(event))
+{
+ SetShape(new DnDEllipticShape(wxPoint(10, 10), wxSize(80, 60), *wxRED));
+
+#if wxUSE_STATUSBAR
+ SetStatusText(wxT("You can now drag the shape to another frame"));
+#endif // wxUSE_STATUSBAR
+}
+
+void DnDShapeFrame::OnClearShape(wxCommandEvent& WXUNUSED(event))
+{
+ SetShape(NULL);
+}
+
+void DnDShapeFrame::OnCopyShape(wxCommandEvent& WXUNUSED(event))
+{
+ if ( m_shape )
+ {
+ wxClipboardLocker clipLocker;
+ if ( !clipLocker )
+ {
+ wxLogError(wxT("Can't open the clipboard"));
+
+ return;
+ }
+
+ wxTheClipboard->AddData(new DnDShapeDataObject(m_shape));
+ }
+}
+
+void DnDShapeFrame::OnPasteShape(wxCommandEvent& WXUNUSED(event))
+{
+ wxClipboardLocker clipLocker;
+ if ( !clipLocker )
+ {
+ wxLogError(wxT("Can't open the clipboard"));
+
+ return;
+ }
+
+ DnDShapeDataObject shapeDataObject(NULL);
+ if ( wxTheClipboard->GetData(shapeDataObject) )
+ {
+ SetShape(shapeDataObject.GetShape());
+ }
+ else
+ {
+ wxLogStatus(wxT("No shape on the clipboard"));
+ }
+}
+
+void DnDShapeFrame::OnUpdateUICopy(wxUpdateUIEvent& event)
+{
+ event.Enable( m_shape != NULL );
+}
+
+void DnDShapeFrame::OnUpdateUIPaste(wxUpdateUIEvent& event)
+{
+ event.Enable( wxTheClipboard->IsSupported(wxDataFormat(shapeFormatId)) );
+}
+
+void DnDShapeFrame::OnPaint(wxPaintEvent& event)
+{
+ if ( m_shape )
+ {
+ wxPaintDC dc(this);
+
+ m_shape->Draw(dc);
+ }
+ else
+ {
+ event.Skip();
+ }
+}
+
+// ----------------------------------------------------------------------------
+// DnDShape
+// ----------------------------------------------------------------------------
+
+DnDShape *DnDShape::New(const void *buf)
+{
+ const ShapeDump& dump = *(const ShapeDump *)buf;
+ switch ( dump.k )
+ {
+ case Triangle:
+ return new DnDTriangularShape(wxPoint(dump.x, dump.y),
+ wxSize(dump.w, dump.h),
+ wxColour(dump.r, dump.g, dump.b));
+
+ case Rectangle:
+ return new DnDRectangularShape(wxPoint(dump.x, dump.y),
+ wxSize(dump.w, dump.h),
+ wxColour(dump.r, dump.g, dump.b));
+
+ case Ellipse:
+ return new DnDEllipticShape(wxPoint(dump.x, dump.y),
+ wxSize(dump.w, dump.h),
+ wxColour(dump.r, dump.g, dump.b));
+
+ default:
+ wxFAIL_MSG(wxT("invalid shape!"));
+ return NULL;
+ }
+}
+
+// ----------------------------------------------------------------------------
+// DnDShapeDataObject
+// ----------------------------------------------------------------------------
+
+#if wxUSE_METAFILE
+
+void DnDShapeDataObject::CreateMetaFile() const
+{
+ wxPoint pos = m_shape->GetPosition();
+ wxSize size = m_shape->GetSize();
+
+ wxMetaFileDC dcMF(wxEmptyString, pos.x + size.x, pos.y + size.y);
+
+ m_shape->Draw(dcMF);
+
+ wxMetafile *mf = dcMF.Close();
+
+ DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast
+ self->m_dobjMetaFile.SetMetafile(*mf);
+ self->m_hasMetaFile = true;
+
+ delete mf;
+}
+
+#endif // wxUSE_METAFILE
+
+void DnDShapeDataObject::CreateBitmap() const
+{
+ wxPoint pos = m_shape->GetPosition();
+ wxSize size = m_shape->GetSize();
+ int x = pos.x + size.x,
+ y = pos.y + size.y;
+ wxBitmap bitmap(x, y);
+ wxMemoryDC dc;
+ dc.SelectObject(bitmap);
+ dc.SetBrush(*wxWHITE_BRUSH);
+ dc.Clear();
+ m_shape->Draw(dc);
+ dc.SelectObject(wxNullBitmap);
+
+ DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast
+ self->m_dobjBitmap.SetBitmap(bitmap);
+ self->m_hasBitmap = true;
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+
+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
+
+static void ShowBitmap(const wxBitmap& bitmap)
+{
+ wxFrame *frame = new wxFrame(NULL, wxID_ANY, wxT("Bitmap view"));
+#if wxUSE_STATUSBAR
+ frame->CreateStatusBar();
+#endif // wxUSE_STATUSBAR
+ DnDCanvasBitmap *canvas = new DnDCanvasBitmap(frame);
+ canvas->SetBitmap(bitmap);
+
+ int w = bitmap.GetWidth(),
+ h = bitmap.GetHeight();
+#if wxUSE_STATUSBAR
+ frame->SetStatusText(wxString::Format(wxT("%dx%d"), w, h));
+#endif // wxUSE_STATUSBAR
+
+ frame->SetClientSize(w > 100 ? 100 : w, h > 100 ? 100 : h);
+ frame->Show(true);
+}
+
+#if wxUSE_METAFILE
+
+static void ShowMetaFile(const wxMetaFile& metafile)
+{
+ wxFrame *frame = new wxFrame(NULL, wxID_ANY, wxT("Metafile view"));
+ frame->CreateStatusBar();
+ DnDCanvasMetafile *canvas = new DnDCanvasMetafile(frame);
+ canvas->SetMetafile(metafile);
+
+ wxSize size = metafile.GetSize();
+ frame->SetStatusText(wxString::Format(wxT("%dx%d"), size.x, size.y));
+
+ frame->SetClientSize(size.x > 100 ? 100 : size.x,
+ size.y > 100 ? 100 : size.y);
+ frame->Show();
+}
+
+#endif // wxUSE_METAFILE
+
+#endif // wxUSE_DRAG_AND_DROP || wxUSE_CLIPBOARD
projects / wxWidgets.git / blobdiff