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audacity/lib-src/FileDialog/gtk/FileDialogPrivate.cpp
2015-07-29 01:59:42 -05:00

615 lines
18 KiB
C++

//
// Copied from wxWidgets 3.0.2 and modified for Audacity
//
/////////////////////////////////////////////////////////////////////////////
// Name: src/gtk/filedlg.cpp
// Purpose: native implementation of wxFileDialog
// Author: Robert Roebling, Zbigniew Zagorski, Mart Raudsepp
// Copyright: (c) 1998 Robert Roebling, 2004 Zbigniew Zagorski, 2005 Mart Raudsepp
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#include <gtk/gtk.h>
#include "../FileDialog.h"
#include "wx/intl.h"
#include "wx/msgdlg.h"
#ifdef __UNIX__
#include <unistd.h> // chdir
#endif
#include <wx/filename.h> // wxFilename
#include <wx/tokenzr.h> // wxStringTokenizer
#include <wx/filefn.h> // ::wxGetCwd
#include <wx/modalhook.h>
#include <wx/sizer.h>
#define wxGTK_CONV(s) (s).utf8_str()
#define wxGTK_CONV_FN(s) (s).fn_str()
// ----------------------------------------------------------------------------
// Convenience class for g_freeing a gchar* on scope exit automatically
// ----------------------------------------------------------------------------
class wxGtkString
{
public:
explicit wxGtkString(gchar *s) : m_str(s) { }
~wxGtkString() { g_free(m_str); }
const gchar *c_str() const { return m_str; }
operator gchar *() const { return m_str; }
private:
gchar *m_str;
wxDECLARE_NO_COPY_CLASS(wxGtkString);
};
//-----------------------------------------------------------------------------
// "clicked" for OK-button
//-----------------------------------------------------------------------------
extern "C" {
static void gtk_filedialog_ok_callback(GtkWidget *widget, FileDialog *dialog)
{
int style = dialog->GetWindowStyle();
wxGtkString filename(gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(widget)));
// gtk version numbers must be identical with the one in ctor (that calls set_do_overwrite_confirmation)
#ifndef __WXGTK3__
#if GTK_CHECK_VERSION(2,7,3)
if (gtk_check_version(2, 7, 3) != NULL)
#endif
{
if ((style & wxFD_SAVE) && (style & wxFD_OVERWRITE_PROMPT))
{
if ( g_file_test(filename, G_FILE_TEST_EXISTS) )
{
wxString msg;
msg.Printf(
_("File '%s' already exists, do you really want to overwrite it?"),
wxString::FromUTF8(filename));
wxMessageDialog dlg(dialog, msg, _("Confirm"),
wxYES_NO | wxICON_QUESTION);
if (dlg.ShowModal() != wxID_YES)
return;
}
}
}
#endif
if (style & wxFD_FILE_MUST_EXIST)
{
if ( !g_file_test(filename, G_FILE_TEST_EXISTS) )
{
wxMessageDialog dlg( dialog, _("Please choose an existing file."),
_("Error"), wxOK| wxICON_ERROR);
dlg.ShowModal();
return;
}
}
// change to the directory where the user went if asked
if (style & wxFD_CHANGE_DIR)
{
// Use chdir to not care about filename encodings
wxGtkString folder(g_path_get_dirname(filename));
chdir(folder);
}
wxCommandEvent event(wxEVT_BUTTON, wxID_OK);
event.SetEventObject(dialog);
dialog->HandleWindowEvent(event);
}
}
//-----------------------------------------------------------------------------
// "clicked" for Cancel-button
//-----------------------------------------------------------------------------
extern "C"
{
static void
gtk_filedialog_cancel_callback(GtkWidget * WXUNUSED(w), FileDialog *dialog)
{
wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
event.SetEventObject(dialog);
dialog->HandleWindowEvent(event);
}
static void gtk_filedialog_response_callback(GtkWidget *w,
gint response,
FileDialog *dialog)
{
if (response == GTK_RESPONSE_ACCEPT)
gtk_filedialog_ok_callback(w, dialog);
else // GTK_RESPONSE_CANCEL or GTK_RESPONSE_NONE
gtk_filedialog_cancel_callback(w, dialog);
}
static void gtk_filedialog_selchanged_callback(GtkFileChooser *chooser,
FileDialog *dialog)
{
wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
dialog->GTKSelectionChanged(wxString::FromUTF8(filename));
}
static void gtk_filedialog_update_preview_callback(GtkFileChooser *chooser,
gpointer user_data)
{
GtkWidget *preview = GTK_WIDGET(user_data);
wxGtkString filename(gtk_file_chooser_get_preview_filename(chooser));
if ( !filename )
return;
GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
gboolean have_preview = pixbuf != NULL;
gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
if ( pixbuf )
g_object_unref (pixbuf);
gtk_file_chooser_set_preview_widget_active(chooser, have_preview);
}
static void gtk_filedialog_folderchanged_callback(GtkFileChooser *chooser,
FileDialog *dialog)
{
dialog->GTKFolderChanged();
}
static void gtk_filedialog_filterchanged_callback(GtkFileChooser *chooser,
GParamSpec *pspec,
FileDialog *dialog)
{
dialog->GTKFilterChanged();
}
static GtkWidget* find_widget(GtkWidget* parent, const gchar* name, int depth)
{
// printf("%*.*c%s\n", depth, depth, ' ', gtk_widget_get_name(parent));
GtkWidget *widget = NULL;
if (g_strcasecmp(gtk_widget_get_name(parent), name) == 0)
{
return parent;
}
if (GTK_IS_BIN(parent))
{
return find_widget(gtk_bin_get_child(GTK_BIN(parent)), name, depth + 1);
}
if (GTK_IS_CONTAINER(parent))
{
GList *list = gtk_container_get_children(GTK_CONTAINER(parent));
for (GList *node = list; node; node = node->next)
{
widget = find_widget(GTK_WIDGET(node->data), name, depth + 1);
if (widget)
{
break;
}
}
g_list_free(list);
}
return widget;
}
} // extern "C"
void FileDialog::AddChildGTK(wxWindowGTK* child)
{
// allow dialog to be resized smaller horizontally
gtk_widget_set_size_request(
child->m_widget, child->GetMinWidth(), child->m_height);
// In GTK 3+, adding our container as the extra widget can cause the
// the filter combo to grow to the same height as our container. This
// makes for a very odd looking filter combo. So, we manually add our
// container below the action bar.
#if GTK_CHECK_VERSION(3,0,0)
GtkWidget *actionbar = find_widget(m_widget, "GtkActionBar", 0);
if (actionbar)
{
GtkWidget *vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add(GTK_CONTAINER(vbox), child->m_widget);
gtk_box_set_child_packing(GTK_BOX(vbox), child->m_widget, TRUE, TRUE, 0, GTK_PACK_START);
gtk_widget_show(vbox);
GtkWidget *abparent = gtk_widget_get_parent(actionbar);
gtk_container_add(GTK_CONTAINER(abparent), vbox);
gtk_box_set_child_packing(GTK_BOX(abparent), vbox, FALSE, FALSE, 0, GTK_PACK_END);
gtk_box_reorder_child(GTK_BOX(abparent), actionbar, -2);
}
#else
gtk_file_chooser_set_extra_widget(
GTK_FILE_CHOOSER(m_widget), child->m_widget);
#endif
}
//-----------------------------------------------------------------------------
// FileDialog
//-----------------------------------------------------------------------------
IMPLEMENT_DYNAMIC_CLASS(FileDialog,FileDialogBase)
BEGIN_EVENT_TABLE(FileDialog,FileDialogBase)
EVT_BUTTON(wxID_OK, FileDialog::OnFakeOk)
EVT_SIZE(FileDialog::OnSize)
END_EVENT_TABLE()
FileDialog::FileDialog(wxWindow *parent, const wxString& message,
const wxString& defaultDir,
const wxString& defaultFileName,
const wxString& wildCard,
long style, const wxPoint& pos,
const wxSize& sz,
const wxString& name)
: FileDialogBase()
{
Create(parent, message, defaultDir, defaultFileName, wildCard, style, pos, sz, name);
}
bool FileDialog::Create(wxWindow *parent, const wxString& message,
const wxString& defaultDir,
const wxString& defaultFileName,
const wxString& wildCard,
long style, const wxPoint& pos,
const wxSize& sz,
const wxString& name)
{
parent = GetParentForModalDialog(parent, style);
if (!FileDialogBase::Create(parent, message, defaultDir, defaultFileName,
wildCard, style, pos, sz, name))
{
return false;
}
if (!PreCreation(parent, pos, wxDefaultSize) ||
!CreateBase(parent, wxID_ANY, pos, wxDefaultSize, style,
wxDefaultValidator, wxT("filedialog")))
{
wxFAIL_MSG( wxT("FileDialog creation failed") );
return false;
}
GtkFileChooserAction gtk_action;
GtkWindow* gtk_parent = NULL;
if (parent)
gtk_parent = GTK_WINDOW( gtk_widget_get_toplevel(parent->m_widget) );
const gchar* ok_btn_stock;
if ( style & wxFD_SAVE )
{
gtk_action = GTK_FILE_CHOOSER_ACTION_SAVE;
ok_btn_stock = GTK_STOCK_SAVE;
}
else
{
gtk_action = GTK_FILE_CHOOSER_ACTION_OPEN;
ok_btn_stock = GTK_STOCK_OPEN;
}
m_widget = gtk_file_chooser_dialog_new(
wxGTK_CONV(m_message),
gtk_parent,
gtk_action,
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
ok_btn_stock, GTK_RESPONSE_ACCEPT,
NULL);
g_object_ref(m_widget);
GtkFileChooser* file_chooser = GTK_FILE_CHOOSER(m_widget);
m_fc.SetWidget(file_chooser);
gtk_dialog_set_default_response(GTK_DIALOG(m_widget), GTK_RESPONSE_ACCEPT);
if ( style & wxFD_MULTIPLE )
gtk_file_chooser_set_select_multiple(file_chooser, true);
// local-only property could be set to false to allow non-local files to be
// loaded. In that case get/set_uri(s) should be used instead of
// get/set_filename(s) everywhere and the GtkFileChooserDialog should
// probably also be created with a backend, e.g. "gnome-vfs", "default", ...
// (gtk_file_chooser_dialog_new_with_backend). Currently local-only is kept
// as the default - true:
// gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(m_widget), true);
g_signal_connect (m_widget, "response",
G_CALLBACK (gtk_filedialog_response_callback), this);
g_signal_connect (m_widget, "selection-changed",
G_CALLBACK (gtk_filedialog_selchanged_callback), this);
g_signal_connect (m_widget, "current-folder-changed",
G_CALLBACK (gtk_filedialog_folderchanged_callback), this);
g_signal_connect (m_widget, "notify::filter",
G_CALLBACK (gtk_filedialog_filterchanged_callback), this);
// deal with extensions/filters
SetWildcard(wildCard);
wxString defaultFileNameWithExt = defaultFileName;
if ( !wildCard.empty() && !defaultFileName.empty() &&
!wxFileName(defaultFileName).HasExt() )
{
// append the default extension, if any, to the initial file name: GTK
// won't do it for us by default (unlike e.g. MSW)
const wxFileName fnWC(m_fc.GetCurrentWildCard());
if ( fnWC.HasExt() )
{
// Notice that we shouldn't append the extension if it's a wildcard
// because this is not useful: the user would need to change it to use
// some fixed extension anyhow.
const wxString& ext = fnWC.GetExt();
if ( ext.find_first_of("?*") == wxString::npos )
defaultFileNameWithExt << "." << ext;
}
}
// if defaultDir is specified it should contain the directory and
// defaultFileName should contain the default name of the file, however if
// directory is not given, defaultFileName contains both
wxFileName fn;
if ( defaultDir.empty() )
fn.Assign(defaultFileNameWithExt);
else if ( !defaultFileNameWithExt.empty() )
fn.Assign(defaultDir, defaultFileNameWithExt);
else
fn.AssignDir(defaultDir);
// set the initial file name and/or directory
fn.MakeAbsolute(); // GTK+ needs absolute path
const wxString dir = fn.GetPath();
if ( !dir.empty() )
{
gtk_file_chooser_set_current_folder(file_chooser, wxGTK_CONV_FN(dir));
}
const wxString fname = fn.GetFullName();
if ( style & wxFD_SAVE )
{
if ( !fname.empty() )
{
gtk_file_chooser_set_current_name(file_chooser, wxGTK_CONV_FN(fname));
}
#if GTK_CHECK_VERSION(2,7,3)
if ((style & wxFD_OVERWRITE_PROMPT)
#ifndef __WXGTK3__
&& gtk_check_version(2,7,3) == NULL
#endif
)
{
gtk_file_chooser_set_do_overwrite_confirmation(file_chooser, true);
}
#endif
}
else // wxFD_OPEN
{
if ( !fname.empty() )
{
gtk_file_chooser_set_filename(file_chooser,
wxGTK_CONV_FN(fn.GetFullPath()));
}
}
if ( style & wxFD_PREVIEW )
{
GtkWidget *previewImage = gtk_image_new();
gtk_file_chooser_set_preview_widget(file_chooser, previewImage);
g_signal_connect(m_widget, "update-preview",
G_CALLBACK(gtk_filedialog_update_preview_callback),
previewImage);
}
return true;
}
FileDialog::~FileDialog()
{
if (m_extraControl)
{
// get chooser to drop its reference right now, allowing wxWindow dtor
// to verify that ref count drops to zero
gtk_file_chooser_set_extra_widget(
GTK_FILE_CHOOSER(m_widget), NULL);
}
}
void FileDialog::OnFakeOk(wxCommandEvent& WXUNUSED(event))
{
// Update the current directory from here, accessing it later may not work
// due to the strange way GtkFileChooser works.
wxGtkString
str(gtk_file_chooser_get_current_folder(GTK_FILE_CHOOSER(m_widget)));
m_dir = wxString::FromUTF8(str);
EndDialog(wxID_OK);
}
int FileDialog::ShowModal()
{
WX_HOOK_MODAL_DIALOG();
// Create the root window
wxBoxSizer *verticalSizer = new wxBoxSizer(wxVERTICAL);
wxPanel *root = new wxPanel(this, wxID_ANY);
if (HasUserPaneCreator())
{
wxPanel *userpane = new wxPanel(root, wxID_ANY);
CreateUserPane(userpane);
wxBoxSizer *horizontalSizer = new wxBoxSizer(wxHORIZONTAL);
horizontalSizer->Add(userpane, 1, wxEXPAND, 0);
verticalSizer->Add(horizontalSizer, 1, wxEXPAND|wxALL, 0);
}
root->SetSizer(verticalSizer);
root->Layout();
verticalSizer->SetSizeHints(root);
// Send an initial filter changed event
GTKFilterChanged();
return wxDialog::ShowModal();
}
void FileDialog::DoSetSize(int WXUNUSED(x), int WXUNUSED(y),
int WXUNUSED(width), int WXUNUSED(height),
int WXUNUSED(sizeFlags))
{
}
void FileDialog::OnSize(wxSizeEvent&)
{
// avoid calling DoLayout(), which will set the (wrong) size of
// m_extraControl, its size is managed by GtkFileChooser
}
wxString FileDialog::GetPath() const
{
return m_fc.GetPath();
}
void FileDialog::GetFilenames(wxArrayString& files) const
{
m_fc.GetFilenames( files );
}
void FileDialog::GetPaths(wxArrayString& paths) const
{
m_fc.GetPaths( paths );
}
void FileDialog::SetMessage(const wxString& message)
{
m_message = message;
SetTitle(message);
}
void FileDialog::SetPath(const wxString& path)
{
FileDialogBase::SetPath(path);
// Don't do anything if no path is specified, in particular don't set the
// path to m_dir below as this would result in opening the dialog in the
// parent directory of this one instead of m_dir itself.
if ( path.empty() )
return;
// we need an absolute path for GTK native chooser so ensure that we have
// it: use the initial directory if it was set or just CWD otherwise (this
// is the default behaviour if m_dir is empty)
wxFileName fn(path);
fn.MakeAbsolute(m_dir);
m_fc.SetPath(fn.GetFullPath());
}
void FileDialog::SetDirectory(const wxString& dir)
{
FileDialogBase::SetDirectory(dir);
m_fc.SetDirectory(dir);
}
void FileDialog::SetFilename(const wxString& name)
{
FileDialogBase::SetFilename(name);
if (HasFdFlag(wxFD_SAVE))
{
gtk_file_chooser_set_current_name(GTK_FILE_CHOOSER(m_widget), wxGTK_CONV(name));
}
else
{
wxString path( GetDirectory() );
if (path.empty())
{
// SetPath() fires an assert if fed other than filepaths
return;
}
SetPath(wxFileName(path, name).GetFullPath());
}
}
wxString FileDialog::GetFilename() const
{
wxString currentFilename( m_fc.GetFilename() );
if (currentFilename.empty())
{
// m_fc.GetFilename() will return empty until the dialog has been shown
// in which case use any previously provided value
currentFilename = m_fileName;
}
return currentFilename;
}
void FileDialog::SetWildcard(const wxString& wildCard)
{
FileDialogBase::SetWildcard(wildCard);
m_fc.SetWildcard( GetWildcard() );
}
void FileDialog::SetFilterIndex(int filterIndex)
{
m_fc.SetFilterIndex( filterIndex);
}
int FileDialog::GetFilterIndex() const
{
return m_fc.GetFilterIndex();
}
void FileDialog::GTKSelectionChanged(const wxString& filename)
{
m_currentlySelectedFilename = filename;
wxFileCtrlEvent event(wxEVT_FILECTRL_SELECTIONCHANGED, this, GetId());
wxArrayString filenames;
GetFilenames(filenames);
event.SetDirectory(GetDirectory());
event.SetFiles(filenames);
GetEventHandler()->ProcessEvent(event);
}
void FileDialog::GTKFolderChanged()
{
wxFileCtrlEvent event(wxEVT_FILECTRL_FOLDERCHANGED, this, GetId());
event.SetDirectory(GetDirectory());
GetEventHandler()->ProcessEvent(event);
}
void FileDialog::GTKFilterChanged()
{
wxFileCtrlEvent event(wxEVT_FILECTRL_FILTERCHANGED, this, GetId());
event.SetFilterIndex(GetFilterIndex());
GetEventHandler()->ProcessEvent(event);
}