a3e7d24d21
DnD multiformat fine-tuning git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4069 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1355 lines
36 KiB
C++
1355 lines
36 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: dnd.cpp
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// Purpose: Drag and drop sample
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 04/01/98
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// RCS-ID: $Id$
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// Copyright:
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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#if !wxUSE_DRAG_AND_DROP
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#error This sample requires drag and drop support in the library
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#endif
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#include "wx/intl.h"
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#include "wx/log.h"
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#include "wx/dnd.h"
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#include "wx/dirdlg.h"
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#include "wx/filedlg.h"
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#include "wx/image.h"
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#include "wx/clipbrd.h"
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#include "wx/colordlg.h"
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#include "wx/resource.h"
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#if defined(__WXGTK__) || defined(__WXMOTIF__)
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#include "mondrian.xpm"
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#endif
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// ----------------------------------------------------------------------------
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// Derive two simple classes which just put in the listbox the strings (text or
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// file names) we drop on them
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// ----------------------------------------------------------------------------
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typedef long wxDropPointCoord;
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class DnDText : public wxTextDropTarget
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{
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public:
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DnDText(wxListBox *pOwner) { m_pOwner = pOwner; }
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virtual bool OnDropText(wxDropPointCoord x, wxDropPointCoord y,
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const wxChar* psz);
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private:
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wxListBox *m_pOwner;
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};
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class DnDFile : public wxFileDropTarget
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{
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public:
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DnDFile(wxListBox *pOwner) { m_pOwner = pOwner; }
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virtual bool OnDropFiles(wxDropPointCoord x, wxDropPointCoord y,
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size_t nFiles, const wxChar* const aszFiles[] );
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private:
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wxListBox *m_pOwner;
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};
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// ----------------------------------------------------------------------------
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// Define a new application type
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// ----------------------------------------------------------------------------
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class DnDApp : public wxApp
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{
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public:
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virtual bool OnInit();
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};
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IMPLEMENT_APP(DnDApp);
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// ----------------------------------------------------------------------------
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// Define a new frame type for the main frame
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// ----------------------------------------------------------------------------
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class DnDFrame : public wxFrame
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{
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public:
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DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h);
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~DnDFrame();
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void OnPaint(wxPaintEvent& event);
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void OnQuit (wxCommandEvent& event);
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void OnAbout(wxCommandEvent& event);
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void OnDrag (wxCommandEvent& event);
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void OnNewFrame(wxCommandEvent& event);
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void OnHelp (wxCommandEvent& event);
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void OnLogClear(wxCommandEvent& event);
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void OnCopy(wxCommandEvent& event);
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void OnPaste(wxCommandEvent& event);
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void OnCopyBitmap(wxCommandEvent& event);
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void OnPasteBitmap(wxCommandEvent& event);
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void OnLeftDown(wxMouseEvent& event);
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void OnRightDown(wxMouseEvent& event);
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void OnUpdateUIPasteText(wxUpdateUIEvent& event);
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void OnUpdateUIPasteBitmap(wxUpdateUIEvent& event);
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DECLARE_EVENT_TABLE()
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private:
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wxListBox *m_ctrlFile,
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*m_ctrlText;
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wxTextCtrl *m_ctrlLog;
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wxLog *m_pLog, *m_pLogPrev;
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wxString m_strText;
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wxBitmap m_bitmap;
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};
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// ----------------------------------------------------------------------------
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// A shape is an example of application-specific data which may be transported
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// via drag-and-drop or clipboard: in our case, we have different geometric
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// shapes, each one with its own colour and position
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// ----------------------------------------------------------------------------
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class DnDShape
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{
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public:
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enum Kind
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{
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None,
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Triangle,
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Rectangle,
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Ellipse
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};
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DnDShape(const wxPoint& pos,
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const wxSize& size,
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const wxColour& col)
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: m_pos(pos), m_size(size), m_col(col)
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{
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}
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// the functions used for drag-and-drop: they dump and restore a shape into
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// some bitwise-copiable data (might use streams too...)
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// ------------------------------------------------------------------------
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// restore from buffer
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static DnDShape *New(const void *buf);
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virtual size_t GetDataSize() const
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{
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return sizeof(ShapeDump);
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}
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virtual void GetDataHere(void *buf) const
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{
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ShapeDump& dump = *(ShapeDump *)buf;
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dump.x = m_pos.x;
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dump.y = m_pos.y;
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dump.w = m_size.x;
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dump.h = m_size.y;
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dump.r = m_col.Red();
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dump.g = m_col.Green();
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dump.b = m_col.Blue();
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dump.k = GetKind();
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}
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// accessors
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const wxPoint& GetPosition() const { return m_pos; }
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const wxColour& GetColour() const { return m_col; }
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const wxSize& GetSize() const { return m_size; }
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void Move(const wxPoint& pos) { m_pos = pos; }
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// to implement in derived classes
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virtual Kind GetKind() const = 0;
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virtual void Draw(wxDC& dc)
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{
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dc.SetPen(wxPen(m_col, 1, wxSOLID));
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}
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protected:
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wxPoint GetCentre() const
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{ return wxPoint(m_pos.x + m_size.x / 2, m_pos.y + m_size.y / 2); }
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struct ShapeDump
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{
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int x, y, // position
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w, h, // size
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r, g, b, // colour
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k; // kind
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};
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wxPoint m_pos;
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wxSize m_size;
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wxColour m_col;
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};
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class DnDTriangularShape : public DnDShape
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{
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public:
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DnDTriangularShape(const wxPoint& pos,
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const wxSize& size,
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const wxColour& col)
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: DnDShape(pos, size, col)
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{
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}
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virtual Kind GetKind() const { return Triangle; }
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virtual void Draw(wxDC& dc)
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{
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DnDShape::Draw(dc);
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// well, it's a bit difficult to describe a triangle by position and
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// size, but we're not doing geometry here, do we? ;-)
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wxPoint p1(m_pos);
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wxPoint p2(m_pos.x + m_size.x, m_pos.y);
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wxPoint p3(m_pos.x, m_pos.y + m_size.y);
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dc.DrawLine(p1, p2);
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dc.DrawLine(p2, p3);
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dc.DrawLine(p3, p1);
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#ifdef __WXMSW__
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dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
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#endif
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}
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};
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class DnDRectangularShape : public DnDShape
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{
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public:
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DnDRectangularShape(const wxPoint& pos,
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const wxSize& size,
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const wxColour& col)
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: DnDShape(pos, size, col)
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{
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}
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virtual Kind GetKind() const { return Rectangle; }
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virtual void Draw(wxDC& dc)
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{
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DnDShape::Draw(dc);
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wxPoint p1(m_pos);
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wxPoint p2(p1.x + m_size.x, p1.y);
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wxPoint p3(p2.x, p2.y + m_size.y);
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wxPoint p4(p1.x, p3.y);
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dc.DrawLine(p1, p2);
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dc.DrawLine(p2, p3);
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dc.DrawLine(p3, p4);
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dc.DrawLine(p4, p1);
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#ifdef __WXMSW__
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dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
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#endif
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}
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};
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class DnDEllipticShape : public DnDShape
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{
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public:
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DnDEllipticShape(const wxPoint& pos,
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const wxSize& size,
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const wxColour& col)
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: DnDShape(pos, size, col)
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{
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}
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virtual Kind GetKind() const { return Ellipse; }
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virtual void Draw(wxDC& dc)
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{
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DnDShape::Draw(dc);
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dc.DrawEllipse(m_pos, m_size);
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#ifdef __WXMSW__
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dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
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#endif
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}
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};
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// ----------------------------------------------------------------------------
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// A wxDataObject specialisation for the application-specific data
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// ----------------------------------------------------------------------------
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static const char *shapeFormatId = "wxShape";
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class DnDShapeDataObject : public wxDataObject
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{
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public:
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// ctor doesn't copy the pointer, so it shouldn't go away while this object
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// is alive
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DnDShapeDataObject(DnDShape *shape)
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{
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m_shape = shape;
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// this string should uniquely identify our format, but is otherwise
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// arbitrary
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m_formatShape.SetId(shapeFormatId);
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// we don't draw the shape to a bitmap until it's really needed (i.e.
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// we're asked to do so)
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m_hasBitmap = FALSE;
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}
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// accessors
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DnDShape *GetShape() const { return m_shape; }
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// implement base class pure virtuals
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// ----------------------------------
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virtual wxDataFormat GetPreferredFormat() const
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{
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return m_formatShape;
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}
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virtual size_t GetFormatCount(bool outputOnlyToo) const
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{
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// our custom format is supported by both GetData() and SetData()
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size_t nFormats = 1;
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if ( outputOnlyToo )
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{
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// but the bitmap format(s) are only supported for output
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nFormats += m_dataobj.GetFormatCount();
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}
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return nFormats;
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}
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virtual void GetAllFormats(wxDataFormat *formats, bool outputOnlyToo) const
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{
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formats[0] = m_formatShape;
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if ( outputOnlyToo )
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{
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m_dataobj.GetAllFormats(&formats[1]);
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}
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}
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virtual size_t GetDataSize(const wxDataFormat& format) const
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{
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if ( format == m_formatShape )
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{
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return m_shape->GetDataSize();
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}
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else
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{
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if ( !m_hasBitmap )
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CreateBitmap();
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return m_dataobj.GetDataSize(format);
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}
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}
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virtual bool GetDataHere(const wxDataFormat& format, void *pBuf) const
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{
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if ( format == m_formatShape )
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{
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m_shape->GetDataHere(pBuf);
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return TRUE;
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}
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else
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{
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wxASSERT_MSG( format == wxDF_BITMAP, "unsupported format" );
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if ( !m_hasBitmap )
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CreateBitmap();
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return m_dataobj.GetDataHere(format, pBuf);
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}
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}
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virtual bool SetData(const wxDataFormat& format, const void *buf)
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{
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wxCHECK_MSG( format == m_formatShape, FALSE, "unsupported format" );
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delete m_shape;
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m_shape = DnDShape::New(buf);
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// the shape has changed
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m_hasBitmap = FALSE;
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return TRUE;
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}
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private:
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// creates a bitmap and assigns it to m_dataobj (also sets m_hasBitmap)
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void CreateBitmap() const;
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wxDataFormat m_formatShape; // our custom format
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wxBitmapDataObject m_dataobj; // it handles bitmaps
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bool m_hasBitmap; // true if m_dataobj has valid bitmap
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DnDShape *m_shape; // our data
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};
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// ----------------------------------------------------------------------------
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// A dialog to edit shape properties
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// ----------------------------------------------------------------------------
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class DnDShapeDialog : public wxDialog
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{
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public:
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DnDShapeDialog(wxFrame *parent, DnDShape *shape);
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DnDShape *GetShape() const;
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virtual bool TransferDataToWindow();
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virtual bool TransferDataFromWindow();
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void OnColour(wxCommandEvent& event);
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private:
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// input
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DnDShape *m_shape;
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// output
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DnDShape::Kind m_shapeKind;
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wxPoint m_pos;
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wxSize m_size;
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wxColour m_col;
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// controls
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wxRadioBox *m_radio;
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wxTextCtrl *m_textX,
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*m_textY,
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*m_textW,
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*m_textH;
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DECLARE_EVENT_TABLE()
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};
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// ----------------------------------------------------------------------------
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// A frame for the shapes which can be drag-and-dropped between frames
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// ----------------------------------------------------------------------------
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class DnDShapeFrame : public wxFrame
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{
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public:
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DnDShapeFrame(wxFrame *parent);
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~DnDShapeFrame();
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void SetShape(DnDShape *shape);
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// callbacks
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void OnNewShape(wxCommandEvent& event);
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void OnEditShape(wxCommandEvent& event);
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void OnClearShape(wxCommandEvent& event);
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void OnCopyShape(wxCommandEvent& event);
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void OnPasteShape(wxCommandEvent& event);
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void OnUpdateUICopy(wxUpdateUIEvent& event);
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void OnUpdateUIPaste(wxUpdateUIEvent& event);
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void OnDrag(wxMouseEvent& event);
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void OnPaint(wxPaintEvent& event);
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void OnDrop(long x, long y, DnDShape *shape);
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private:
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DnDShape *m_shape;
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static DnDShapeFrame *ms_lastDropTarget;
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DECLARE_EVENT_TABLE()
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};
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// ----------------------------------------------------------------------------
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// wxDropTarget derivation for DnDShapes
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// ----------------------------------------------------------------------------
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class DnDShapeDropTarget : public wxDropTarget
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{
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public:
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DnDShapeDropTarget(DnDShapeFrame *frame)
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{
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m_frame = frame;
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// the same as used by DnDShapeDataObject
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m_formatShape.SetId(shapeFormatId);
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}
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// override base class (pure) virtuals
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virtual void OnEnter()
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{ m_frame->SetStatusText("Mouse entered the frame"); }
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virtual void OnLeave()
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{ m_frame->SetStatusText("Mouse left the frame"); }
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virtual bool OnDrop(long x, long y, const void *pData)
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{
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m_frame->OnDrop(x, y, DnDShape::New(pData));
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return TRUE;
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}
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protected:
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virtual size_t GetFormatCount() const { return 1; }
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virtual wxDataFormat GetFormat(size_t WXUNUSED(n)) const
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{ return m_formatShape; }
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private:
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DnDShapeFrame *m_frame;
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wxDataFormat m_formatShape;
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};
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// ----------------------------------------------------------------------------
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// IDs for the menu commands
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// ----------------------------------------------------------------------------
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enum
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{
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Menu_Quit = 1,
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Menu_Drag,
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Menu_NewFrame,
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Menu_About = 101,
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Menu_Help,
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Menu_Clear,
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Menu_Copy,
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Menu_Paste,
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Menu_CopyBitmap,
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Menu_PasteBitmap,
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Menu_ToBeGreyed, /* for testing */
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Menu_ToBeDeleted, /* for testing */
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Menu_Shape_New = 500,
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Menu_Shape_Edit,
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Menu_Shape_Clear,
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Menu_ShapeClipboard_Copy,
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Menu_ShapeClipboard_Paste,
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Button_Colour = 1001
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};
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BEGIN_EVENT_TABLE(DnDFrame, wxFrame)
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EVT_MENU(Menu_Quit, DnDFrame::OnQuit)
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EVT_MENU(Menu_About, DnDFrame::OnAbout)
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EVT_MENU(Menu_Drag, DnDFrame::OnDrag)
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EVT_MENU(Menu_NewFrame, DnDFrame::OnNewFrame)
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EVT_MENU(Menu_Help, DnDFrame::OnHelp)
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EVT_MENU(Menu_Clear, DnDFrame::OnLogClear)
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EVT_MENU(Menu_Copy, DnDFrame::OnCopy)
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EVT_MENU(Menu_Paste, DnDFrame::OnPaste)
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EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
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EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
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EVT_UPDATE_UI(Menu_Paste, DnDFrame::OnUpdateUIPasteText)
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EVT_UPDATE_UI(Menu_PasteBitmap, DnDFrame::OnUpdateUIPasteBitmap)
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EVT_LEFT_DOWN( DnDFrame::OnLeftDown)
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EVT_RIGHT_DOWN( DnDFrame::OnRightDown)
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EVT_PAINT( DnDFrame::OnPaint)
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END_EVENT_TABLE()
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BEGIN_EVENT_TABLE(DnDShapeFrame, wxFrame)
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EVT_MENU(Menu_Shape_New, DnDShapeFrame::OnNewShape)
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EVT_MENU(Menu_Shape_Edit, DnDShapeFrame::OnEditShape)
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EVT_MENU(Menu_Shape_Clear, DnDShapeFrame::OnClearShape)
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EVT_MENU(Menu_ShapeClipboard_Copy, DnDShapeFrame::OnCopyShape)
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EVT_MENU(Menu_ShapeClipboard_Paste, DnDShapeFrame::OnPasteShape)
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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, OnColour)
|
|
END_EVENT_TABLE()
|
|
|
|
// ============================================================================
|
|
// implementation
|
|
// ============================================================================
|
|
|
|
// `Main program' equivalent, creating windows and returning main app frame
|
|
bool DnDApp::OnInit()
|
|
{
|
|
#if wxUSE_LIBPNG
|
|
wxImage::AddHandler( new wxPNGHandler );
|
|
#endif
|
|
|
|
// create the main frame window
|
|
DnDFrame *frame = new DnDFrame((wxFrame *) NULL,
|
|
"Drag-and-Drop/Clipboard wxWindows Sample",
|
|
50, 50, 450, 340);
|
|
|
|
// activate it
|
|
frame->Show(TRUE);
|
|
|
|
SetTopWindow(frame);
|
|
|
|
wxDefaultResourceTable->ParseResourceFile("dnd.wxr");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
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 :-)")
|
|
|
|
{
|
|
// frame icon and status bar
|
|
SetIcon(wxICON(mondrian));
|
|
|
|
CreateStatusBar();
|
|
|
|
// construct menu
|
|
wxMenu *file_menu = new wxMenu;
|
|
file_menu->Append(Menu_Drag, "&Test drag...");
|
|
file_menu->AppendSeparator();
|
|
file_menu->Append(Menu_NewFrame, "&New frame\tCtrl-N");
|
|
file_menu->AppendSeparator();
|
|
file_menu->Append(Menu_Quit, "E&xit");
|
|
|
|
wxMenu *log_menu = new wxMenu;
|
|
log_menu->Append(Menu_Clear, "Clear\tDel");
|
|
|
|
wxMenu *help_menu = new wxMenu;
|
|
help_menu->Append(Menu_Help, "&Help...");
|
|
help_menu->AppendSeparator();
|
|
help_menu->Append(Menu_About, "&About");
|
|
|
|
wxMenu *clip_menu = new wxMenu;
|
|
clip_menu->Append(Menu_Copy, "&Copy text\tCtrl+C");
|
|
clip_menu->Append(Menu_Paste, "&Paste text\tCtrl+V");
|
|
clip_menu->AppendSeparator();
|
|
clip_menu->Append(Menu_CopyBitmap, "&Copy bitmap\tAlt+C");
|
|
clip_menu->Append(Menu_PasteBitmap, "&Paste bitmap\tAlt+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");
|
|
|
|
SetMenuBar(menu_bar);
|
|
|
|
// make a panel with 3 subwindows
|
|
wxPoint pos(0, 0);
|
|
wxSize size(400, 200);
|
|
|
|
wxString strFile("Drop files here!"), strText("Drop text on me");
|
|
|
|
m_ctrlFile = new wxListBox(this, -1, pos, size, 1, &strFile,
|
|
wxLB_HSCROLL | wxLB_ALWAYS_SB );
|
|
m_ctrlText = new wxListBox(this, -1, pos, size, 1, &strText,
|
|
wxLB_HSCROLL | wxLB_ALWAYS_SB );
|
|
|
|
m_ctrlLog = new wxTextCtrl(this, -1, "", pos, size,
|
|
wxTE_MULTILINE | wxTE_READONLY |
|
|
wxSUNKEN_BORDER );
|
|
|
|
#ifdef __WXMSW__
|
|
// redirect log messages to the text window and switch on OLE messages
|
|
// logging
|
|
wxLog::AddTraceMask(wxTRACE_OleCalls);
|
|
#endif
|
|
m_pLog = new wxLogTextCtrl(m_ctrlLog);
|
|
m_pLogPrev = wxLog::SetActiveTarget(m_pLog);
|
|
|
|
// associate drop targets with 2 text controls
|
|
m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
|
|
m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));
|
|
|
|
wxLayoutConstraints *c;
|
|
|
|
// 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, 30);
|
|
m_ctrlFile->SetConstraints(c);
|
|
|
|
// 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, 30);
|
|
m_ctrlText->SetConstraints(c);
|
|
|
|
// Lower text control
|
|
c = new wxLayoutConstraints;
|
|
c->left.SameAs (this, wxLeft);
|
|
c->right.SameAs (this, wxRight);
|
|
c->height.PercentOf(this, wxHeight, 50);
|
|
c->top.SameAs(m_ctrlText, wxBottom);
|
|
m_ctrlLog->SetConstraints(c);
|
|
|
|
SetAutoLayout(TRUE);
|
|
}
|
|
|
|
void DnDFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
Close(TRUE);
|
|
}
|
|
|
|
void DnDFrame::OnPaint(wxPaintEvent& WXUNUSED(event))
|
|
{
|
|
int w = 0;
|
|
int h = 0;
|
|
GetClientSize( &w, &h );
|
|
|
|
wxPaintDC dc(this);
|
|
dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL, FALSE, "charter" ) );
|
|
dc.DrawText( "Drag text from here!", 20, h-50 );
|
|
|
|
if ( m_bitmap.Ok() )
|
|
{
|
|
// 4/5 is 80% taken by other windows, 20 is arbitrary margin
|
|
dc.DrawBitmap(m_bitmap,
|
|
w - m_bitmap.GetWidth() - 20,
|
|
(4*h)/5 + 20);
|
|
}
|
|
}
|
|
|
|
void DnDFrame::OnUpdateUIPasteText(wxUpdateUIEvent& event)
|
|
{
|
|
event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
|
|
}
|
|
|
|
void DnDFrame::OnUpdateUIPasteBitmap(wxUpdateUIEvent& event)
|
|
{
|
|
event.Enable( wxTheClipboard->IsSupported(wxDF_BITMAP) );
|
|
}
|
|
|
|
void DnDFrame::OnNewFrame(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
(new DnDShapeFrame(this))->Show(TRUE);
|
|
|
|
wxLogStatus(this, "Double click the new frame to select a shape for it");
|
|
}
|
|
|
|
void DnDFrame::OnDrag(wxCommandEvent& WXUNUSED(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
|
|
);
|
|
|
|
m_strText = strText;
|
|
}
|
|
|
|
void DnDFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
wxMessageBox("Drag-&-Drop Demo\n"
|
|
"Please see \"Help|Help...\" for details\n"
|
|
"Copyright (c) 1998 Vadim Zeitlin",
|
|
"About wxDnD",
|
|
wxICON_INFORMATION | wxOK,
|
|
this);
|
|
}
|
|
|
|
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");
|
|
|
|
dialog.ShowModal();
|
|
}
|
|
|
|
void DnDFrame::OnLogClear(wxCommandEvent& /* event */ )
|
|
{
|
|
m_ctrlLog->Clear();
|
|
}
|
|
|
|
void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
|
|
{
|
|
if ( !m_strText.IsEmpty() )
|
|
{
|
|
// start drag operation
|
|
wxTextDataObject textData(m_strText);
|
|
wxDropSource source(textData, this, wxICON(mondrian));
|
|
|
|
const char *pc;
|
|
|
|
switch ( source.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;
|
|
}
|
|
|
|
SetStatusText(wxString("Drag result: ") + pc);
|
|
}
|
|
}
|
|
|
|
void DnDFrame::OnRightDown(wxMouseEvent &event )
|
|
{
|
|
wxMenu *menu = new wxMenu;
|
|
|
|
menu->Append(Menu_Drag, "&Test drag...");
|
|
menu->Append(Menu_About, "&About");
|
|
menu->Append(Menu_Quit, "E&xit");
|
|
menu->Append(Menu_ToBeDeleted, "To be deleted");
|
|
menu->Append(Menu_ToBeGreyed, "To be greyed");
|
|
|
|
menu->Delete( Menu_ToBeDeleted );
|
|
menu->Enable( Menu_ToBeGreyed, FALSE );
|
|
|
|
PopupMenu( menu, event.GetX(), event.GetY() );
|
|
}
|
|
|
|
DnDFrame::~DnDFrame()
|
|
{
|
|
if ( m_pLog != NULL ) {
|
|
if ( wxLog::SetActiveTarget(m_pLogPrev) == m_pLog )
|
|
delete m_pLog;
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// bitmap clipboard
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
// PNG support is not always compiled in under Windows, so use BMP there
|
|
#ifdef __WXMSW__
|
|
wxFileDialog dialog(this, "Open a BMP file", "", "", "BMP files (*.bmp)|*.bmp", 0);
|
|
#else
|
|
wxFileDialog dialog(this, "Open a PNG file", "", "", "PNG files (*.png)|*.png", 0);
|
|
#endif
|
|
|
|
if (dialog.ShowModal() != wxID_OK)
|
|
{
|
|
wxLogMessage( _T("Aborted file open") );
|
|
return;
|
|
}
|
|
|
|
if (dialog.GetPath().IsEmpty())
|
|
{
|
|
wxLogMessage( _T("Returned empty string.") );
|
|
return;
|
|
}
|
|
|
|
if (!wxFileExists(dialog.GetPath()))
|
|
{
|
|
wxLogMessage( _T("File doesn't exist.") );
|
|
return;
|
|
}
|
|
|
|
wxImage image;
|
|
image.LoadFile( dialog.GetPath(),
|
|
#ifdef __WXMSW__
|
|
wxBITMAP_TYPE_BMP
|
|
#else
|
|
wxBITMAP_TYPE_PNG
|
|
#endif
|
|
);
|
|
if (!image.Ok())
|
|
{
|
|
wxLogError( _T("Invalid image file...") );
|
|
return;
|
|
}
|
|
|
|
wxLogStatus( _T("Decoding image file...") );
|
|
wxYield();
|
|
|
|
wxBitmap bitmap( image.ConvertToBitmap() );
|
|
|
|
if ( !wxTheClipboard->Open() )
|
|
{
|
|
wxLogError(_T("Can't open clipboard."));
|
|
|
|
return;
|
|
}
|
|
|
|
wxLogMessage( _T("Creating wxBitmapDataObject...") );
|
|
wxYield();
|
|
|
|
if ( !wxTheClipboard->AddData(new wxBitmapDataObject(bitmap)) )
|
|
{
|
|
wxLogError(_T("Can't copy image to the clipboard."));
|
|
}
|
|
else
|
|
{
|
|
wxLogMessage(_T("Image has been put on the clipboard.") );
|
|
wxLogMessage(_T("You can paste it now and look at it.") );
|
|
}
|
|
|
|
wxTheClipboard->Close();
|
|
}
|
|
|
|
void DnDFrame::OnPasteBitmap(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
if ( !wxTheClipboard->Open() )
|
|
{
|
|
wxLogError(_T("Can't open clipboard."));
|
|
|
|
return;
|
|
}
|
|
|
|
if ( !wxTheClipboard->IsSupported(wxDF_BITMAP) )
|
|
{
|
|
wxLogWarning(_T("No bitmap on clipboard"));
|
|
|
|
wxTheClipboard->Close();
|
|
return;
|
|
}
|
|
|
|
wxBitmapDataObject data;
|
|
if ( !wxTheClipboard->GetData(&data) )
|
|
{
|
|
wxLogError(_T("Can't paste bitmap from the clipboard"));
|
|
}
|
|
else
|
|
{
|
|
wxLogMessage(_T("Bitmap pasted from the clipboard") );
|
|
m_bitmap = data.GetBitmap();
|
|
Refresh();
|
|
}
|
|
|
|
wxTheClipboard->Close();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------
|
|
// text clipboard
|
|
// ---------------------------------------------------------------------------
|
|
|
|
void DnDFrame::OnCopy(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
if ( !wxTheClipboard->Open() )
|
|
{
|
|
wxLogError(_T("Can't open clipboard."));
|
|
|
|
return;
|
|
}
|
|
|
|
if ( !wxTheClipboard->AddData(new wxTextDataObject(m_strText)) )
|
|
{
|
|
wxLogError(_T("Can't copy data to the clipboard"));
|
|
}
|
|
else
|
|
{
|
|
wxLogMessage(_T("Text '%s' put on the clipboard"), m_strText.c_str());
|
|
}
|
|
|
|
wxTheClipboard->Close();
|
|
}
|
|
|
|
void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
|
|
{
|
|
if ( !wxTheClipboard->Open() )
|
|
{
|
|
wxLogError(_T("Can't open clipboard."));
|
|
|
|
return;
|
|
}
|
|
|
|
if ( !wxTheClipboard->IsSupported(wxDF_TEXT) )
|
|
{
|
|
wxLogWarning(_T("No text data on clipboard"));
|
|
|
|
wxTheClipboard->Close();
|
|
return;
|
|
}
|
|
|
|
wxTextDataObject text;
|
|
if ( !wxTheClipboard->GetData(&text) )
|
|
{
|
|
wxLogError(_T("Can't paste data from the clipboard"));
|
|
}
|
|
else
|
|
{
|
|
wxLogMessage(_T("Text '%s' pasted from the clipboard"),
|
|
text.GetText().c_str());
|
|
}
|
|
|
|
wxTheClipboard->Close();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Notifications called by the base class
|
|
// ----------------------------------------------------------------------------
|
|
|
|
bool DnDText::OnDropText( wxDropPointCoord, wxDropPointCoord, const wxChar *psz )
|
|
{
|
|
m_pOwner->Append(psz);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
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]);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// DnDShapeDialog
|
|
// ----------------------------------------------------------------------------
|
|
|
|
DnDShapeDialog::DnDShapeDialog(wxFrame *parent, DnDShape *shape)
|
|
{
|
|
m_shape = shape;
|
|
|
|
LoadFromResource(parent, "dialogShape");
|
|
|
|
m_textX = (wxTextCtrl *)wxFindWindowByName("textX", this);
|
|
m_textY = (wxTextCtrl *)wxFindWindowByName("textY", this);
|
|
m_textW = (wxTextCtrl *)wxFindWindowByName("textW", this);
|
|
m_textH = (wxTextCtrl *)wxFindWindowByName("textH", this);
|
|
|
|
m_radio = (wxRadioBox *)wxFindWindowByName("radio", this);
|
|
}
|
|
|
|
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 = atoi(m_textX->GetValue());
|
|
m_pos.y = atoi(m_textY->GetValue());
|
|
m_size.x = atoi(m_textW->GetValue());
|
|
m_size.y = atoi(m_textH->GetValue());
|
|
|
|
if ( !m_pos.x || !m_pos.y || !m_size.x || !m_size.y )
|
|
{
|
|
wxMessageBox("All sizes and positions should be non null!",
|
|
"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(i*16, i*16, 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, -1, "Shape Frame",
|
|
wxDefaultPosition, wxSize(250, 150))
|
|
{
|
|
SetBackgroundColour(*wxWHITE);
|
|
|
|
CreateStatusBar();
|
|
|
|
wxMenu *menuShape = new wxMenu;
|
|
menuShape->Append(Menu_Shape_New, "&New default shape\tCtrl-S");
|
|
menuShape->Append(Menu_Shape_Edit, "&Edit shape\tCtrl-E");
|
|
menuShape->AppendSeparator();
|
|
menuShape->Append(Menu_Shape_Clear, "&Clear shape\tDel");
|
|
|
|
wxMenu *menuClipboard = new wxMenu;
|
|
menuClipboard->Append(Menu_ShapeClipboard_Copy, "&Copy\tCtrl-C");
|
|
menuClipboard->Append(Menu_ShapeClipboard_Paste, "&Paste\tCtrl-V");
|
|
|
|
wxMenuBar *menubar = new wxMenuBar;
|
|
menubar->Append(menuShape, "&Shape");
|
|
menubar->Append(menuClipboard, "&Clipboard");
|
|
|
|
SetMenuBar(menubar);
|
|
|
|
SetStatusText("Press Ctrl-S to create a new shape");
|
|
|
|
SetDropTarget(new DnDShapeDropTarget(this));
|
|
|
|
m_shape = NULL;
|
|
}
|
|
|
|
DnDShapeFrame::~DnDShapeFrame()
|
|
{
|
|
delete m_shape;
|
|
}
|
|
|
|
void DnDShapeFrame::SetShape(DnDShape *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, wxICON(mondrian));
|
|
|
|
const char *pc = NULL;
|
|
switch ( source.DoDragDrop(TRUE) )
|
|
{
|
|
default:
|
|
case wxDragError:
|
|
wxLogError("An error occured during drag and drop operation");
|
|
break;
|
|
|
|
case wxDragNone:
|
|
SetStatusText("Nothing happened");
|
|
break;
|
|
|
|
case wxDragCopy:
|
|
pc = "copied";
|
|
break;
|
|
|
|
case wxDragMove:
|
|
pc = "moved";
|
|
if ( ms_lastDropTarget != this )
|
|
{
|
|
// don't delete the shape if we dropped it on ourselves!
|
|
SetShape(NULL);
|
|
}
|
|
break;
|
|
|
|
case wxDragCancel:
|
|
SetStatusText("Drag and drop operation cancelled");
|
|
break;
|
|
}
|
|
|
|
if ( pc )
|
|
{
|
|
SetStatusText(wxString("Shape successfully ") + pc);
|
|
}
|
|
//else: status text already set
|
|
}
|
|
|
|
void DnDShapeFrame::OnEditShape(wxCommandEvent& event)
|
|
{
|
|
DnDShapeDialog dlg(this, m_shape);
|
|
if ( dlg.ShowModal() == wxID_OK )
|
|
{
|
|
SetShape(dlg.GetShape());
|
|
|
|
if ( m_shape )
|
|
{
|
|
SetStatusText("You can now drag the shape to another frame");
|
|
}
|
|
}
|
|
}
|
|
|
|
void DnDShapeFrame::OnNewShape(wxCommandEvent& event)
|
|
{
|
|
SetShape(new DnDEllipticShape(wxPoint(10, 10), wxSize(80, 60), *wxRED));
|
|
|
|
SetStatusText("You can now drag the shape to another frame");
|
|
}
|
|
|
|
void DnDShapeFrame::OnClearShape(wxCommandEvent& event)
|
|
{
|
|
SetShape(NULL);
|
|
}
|
|
|
|
void DnDShapeFrame::OnCopyShape(wxCommandEvent& event)
|
|
{
|
|
if ( m_shape )
|
|
wxTheClipboard->AddData(new DnDShapeDataObject(m_shape));
|
|
}
|
|
|
|
void DnDShapeFrame::OnPasteShape(wxCommandEvent& event)
|
|
{
|
|
DnDShapeDataObject shapeDataObject(NULL);
|
|
if ( wxTheClipboard->GetData(&shapeDataObject) )
|
|
{
|
|
SetShape(shapeDataObject.GetShape());
|
|
}
|
|
else
|
|
{
|
|
wxLogStatus("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 )
|
|
m_shape->Draw(wxPaintDC(this));
|
|
else
|
|
event.Skip();
|
|
}
|
|
|
|
void DnDShapeFrame::OnDrop(long x, long y, DnDShape *shape)
|
|
{
|
|
ms_lastDropTarget = this;
|
|
|
|
wxString s;
|
|
s.Printf("Shape dropped at (%ld, %ld)", x, y);
|
|
SetStatusText(s);
|
|
|
|
shape->Move(ScreenToClient(wxPoint(x, y)));
|
|
SetShape(shape);
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// 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("invalid shape!");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// DnDShapeDataObject
|
|
// ----------------------------------------------------------------------------
|
|
|
|
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(wxBrush("white", wxSOLID));
|
|
dc.Clear();
|
|
m_shape->Draw(dc);
|
|
dc.SelectObject(wxNullBitmap);
|
|
|
|
DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast
|
|
self->m_dataobj.SetBitmap(bitmap);
|
|
self->m_hasBitmap = TRUE;
|
|
}
|
|
|