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Added wxCountingStream for measuring the size of streamed data

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Added wxBitmapObject for putting it on the clipboard


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3439 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
1999-08-22 14:10:50 +00:00
parent ac2def68ed
commit e2acb9ae1c
12 changed files with 694 additions and 327 deletions
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294
samples/dnd/dnd.cpp
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@@ -19,22 +19,23 @@
#include "wx/wx.h"
#endif
#ifdef __WXMOTIF__
#error Sorry, drag and drop is not yet implemented on wxMotif.
#endif
#include "wx/intl.h"
#include "wx/log.h"
#include "wx/dnd.h"
#include "wx/dirdlg.h"
#ifdef __WXMOTIF__
#error Sorry, drag and drop is not yet implemented on wxMotif.
#endif
#include "wx/filedlg.h"
#include "wx/image.h"
#include "wx/clipbrd.h"
#if defined(__WXGTK__) || defined(__WXMOTIF__)
#include "mondrian.xpm"
#endif
#include "wx/clipbrd.h"
// ----------------------------------------------------------------------------
// Derive two simple classes which just put in the listbox the strings (text or
// file names) we drop on them
@@ -95,6 +96,10 @@ public:
void OnLogClear(wxCommandEvent& event);
void OnCopy(wxCommandEvent& event);
void OnPaste(wxCommandEvent& event);
void OnCopyBitmap(wxCommandEvent& event);
void OnPasteBitmap(wxCommandEvent& event);
void OnClipboardHasText(wxCommandEvent& event);
void OnClipboardHasBitmap(wxCommandEvent& event);
void OnLeftDown(wxMouseEvent& event);
void OnRightDown(wxMouseEvent& event);
@@ -102,13 +107,14 @@ public:
DECLARE_EVENT_TABLE()
private:
wxListBox *m_ctrlFile,
*m_ctrlText;
wxTextCtrl *m_ctrlLog;
wxListBox *m_ctrlFile,
*m_ctrlText;
wxTextCtrl *m_ctrlLog;
wxLog *m_pLog, *m_pLogPrev;
wxLog *m_pLog, *m_pLogPrev;
wxString m_strText;
wxString m_strText;
wxBitmap m_bitmap;
};
// ----------------------------------------------------------------------------
@@ -123,26 +129,38 @@ enum
Menu_Help,
Menu_Clear,
Menu_Copy,
Menu_Paste
Menu_Paste,
Menu_CopyBitmap,
Menu_PasteBitmap,
Menu_HasText,
Menu_HasBitmap
};
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_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_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
EVT_MENU(Menu_HasText, DnDFrame::OnClipboardHasText)
EVT_MENU(Menu_HasBitmap, DnDFrame::OnClipboardHasBitmap)
EVT_LEFT_DOWN( DnDFrame::OnLeftDown)
EVT_RIGHT_DOWN( DnDFrame::OnRightDown)
EVT_PAINT( DnDFrame::OnPaint)
EVT_LEFT_DOWN( DnDFrame::OnLeftDown)
EVT_RIGHT_DOWN( DnDFrame::OnRightDown)
EVT_PAINT( DnDFrame::OnPaint)
END_EVENT_TABLE()
// `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",
@@ -181,9 +199,15 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h)
help_menu->Append(Menu_About, "&About");
wxMenu *clip_menu = new wxMenu;
clip_menu->Append(Menu_Copy, "&Copy\tCtrl+C");
clip_menu->Append(Menu_Paste, "&Paste\tCtrl+V");
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");
clip_menu->Append(Menu_PasteBitmap, "&Paste bitmap");
clip_menu->AppendSeparator();
clip_menu->Append(Menu_HasText, "Clipboard has &text\tCtrl+T");
clip_menu->Append(Menu_HasBitmap, "Clipboard has a &bitmap\tCtrl+B");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
menu_bar->Append(log_menu, "&Log");
@@ -198,58 +222,55 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h)
wxString strFile("Drop files here!"), strText("Drop text on me");
m_ctrlFile = new wxListBox(this, -1, pos, size, 1, &strFile, wxLB_HSCROLL);
m_ctrlText = new wxListBox(this, -1, pos, size, 1, &strText, wxLB_HSCROLL);
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 );
// 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);
#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));
// associate drop targets with 2 text controls
m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));
wxLayoutConstraints *c;
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-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);
// 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);
// 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);
// Lower text control
c = new wxLayoutConstraints;
c->left.SameAs (this, wxLeft);
c->right.SameAs (this, wxRight);
c->height.PercentOf(this, wxHeight, 30);
c->top.SameAs(m_ctrlText, wxBottom);
m_ctrlLog->SetConstraints(c);
// 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);
SetAutoLayout(TRUE);
SetAutoLayout(TRUE);
}
void DnDFrame::OnQuit(wxCommandEvent& /* event */)
void DnDFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
Close(TRUE);
}
void DnDFrame::OnPaint(wxPaintEvent& /*event*/)
void DnDFrame::OnPaint(wxPaintEvent& WXUNUSED(event))
{
int w = 0;
int h = 0;
@@ -257,10 +278,55 @@ void DnDFrame::OnPaint(wxPaintEvent& /*event*/)
wxPaintDC dc(this);
dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL, FALSE, "charter" ) );
dc.DrawText( "Drag text from here!", 20, h-35 );
dc.DrawText( "Drag text from here!", 20, h-50 );
if (m_bitmap.Ok())
dc.DrawBitmap( m_bitmap, 280, h-120, TRUE );
}
void DnDFrame::OnDrag(wxCommandEvent& /* event */)
void DnDFrame::OnClipboardHasText(wxCommandEvent& WXUNUSED(event))
{
if ( !wxTheClipboard->Open() )
{
wxLogError( _T("Can't open clipboard.") );
return;
}
if ( !wxTheClipboard->IsSupported( wxDF_TEXT ) )
{
wxLogMessage( _T("No text is on the clipboard") );
}
else
{
wxLogMessage( _T("There is text is on the clipboard") );
}
wxTheClipboard->Close();
}
void DnDFrame::OnClipboardHasBitmap(wxCommandEvent& WXUNUSED(event))
{
if ( !wxTheClipboard->Open() )
{
wxLogError( _T("Can't open clipboard.") );
return;
}
if ( !wxTheClipboard->IsSupported( wxDF_BITMAP ) )
{
wxLogMessage( _T("No bitmap is on the clipboard") );
}
else
{
wxLogMessage( _T("A bitmap is on the clipboard") );
}
wxTheClipboard->Close();
}
void DnDFrame::OnDrag(wxCommandEvent& WXUNUSED(event))
{
wxString strText = wxGetTextFromUser
(
@@ -274,7 +340,7 @@ void DnDFrame::OnDrag(wxCommandEvent& /* event */)
m_strText = strText;
}
void DnDFrame::OnAbout(wxCommandEvent& /* event */)
void DnDFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox("Drag-&-Drop Demo\n"
"Please see \"Help|Help...\" for details\n"
@@ -357,16 +423,108 @@ void DnDFrame::OnRightDown(wxMouseEvent &event )
DnDFrame::~DnDFrame()
{
#if wxUSE_STD_IOSTREAM
if ( m_pLog != NULL ) {
if ( wxLog::SetActiveTarget(m_pLogPrev) == m_pLog )
delete m_pLog;
}
#endif
}
// ---------------------------------------------------------------------------
// clipboard
// bitmap clipboard
// ---------------------------------------------------------------------------
void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event))
{
wxFileDialog dialog(this, "Open a PNG file", "", "", "PNG files (*.png)|*.png", 0);
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(), wxBITMAP_TYPE_PNG );
if (!image.Ok())
{
wxLogMessage( _T("Invalid image file...") );
return;
}
wxLogMessage( _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))
@@ -403,6 +561,7 @@ void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
{
wxLogWarning(_T("No text data on clipboard"));
wxTheClipboard->Close();
return;
}
@@ -423,6 +582,7 @@ void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event))
// ----------------------------------------------------------------------------
// Notifications called by the base class
// ----------------------------------------------------------------------------
bool DnDText::OnDropText( wxDropPointCoord, wxDropPointCoord, const wxChar *psz )
{
m_pOwner->Append(psz);