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Code Issues Releases Wiki Activity

TrackPanelAx does not depend on TrackPanel...

Browse Source 
... TrackPanelAx now sends an event to the project when track focus changes,
and TrackPanel listens for it.

TrackPanel also initializes TrackPanelAx with a callback to do the details of
rectangle calculation.
This commit is contained in:
Paul Licameli 2019-06-25 10:56:25 -04:00
parent 2257fa642a
commit 25f4d6cf8b
5 changed files with 85 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/TrackPanel.cpp
View File

@ -266,7 +266,16 @@ TrackPanel::TrackPanel(wxWindow * parent, wxWindowID id,
SetBackgroundStyle(wxBG_STYLE_PAINT);
{
auto pAx = std::make_unique <TrackPanelAx>( this );
auto pAx = std::make_unique <TrackPanelAx>( *project );
pAx->SetWindow( this );
wxWeakRef< TrackPanel > weakThis{ this };
pAx->SetFinder(
[weakThis]( const Track &track ) -> wxRect {
if (weakThis)
return weakThis->FindTrackRect( &track );
return {};
}
);
#if wxUSE_ACCESSIBILITY
// wxWidgets owns the accessible object
SetAccessible(mAx = pAx.release());
@ -305,6 +314,8 @@ TrackPanel::TrackPanel(wxWindow * parent, wxWindowID id,
theProject->Bind(EVT_ODTASK_COMPLETE, &TrackPanel::OnODTask, this);
theProject->Bind(
EVT_PROJECT_SETTINGS_CHANGE, &TrackPanel::OnProjectSettingsChange, this);
theProject->Bind(
EVT_TRACK_FOCUS_CHANGE, &TrackPanel::OnTrackFocusChange, this );
theProject->Bind(EVT_UNDO_RESET, &TrackPanel::OnUndoReset, this);
@ -706,12 +717,6 @@ void TrackPanel::UpdateAccessibility()
mAx->Updated();
}
// Counts tracks, counting stereo tracks as one track.
size_t TrackPanel::GetTrackCount() const
{
return GetTracks()->Leaders().size();
}
// Counts selected tracks, counting stereo tracks as one track.
size_t TrackPanel::GetSelectedTrackCount() const
{
@ -1670,7 +1675,14 @@ void TrackPanel::SetFocusedTrack( Track *t )
// Make sure we always have the first linked track of a stereo track
t = *GetTracks()->FindLeader(t);
auto cell = mAx->SetFocus( Track::SharedPointer( t ) ).get();
// This will cause callback to the handler function, defined next
mAx->SetFocus( Track::SharedPointer( t ) );
}
void TrackPanel::OnTrackFocusChange( wxCommandEvent &event )
{
event.Skip();
auto cell = mAx->GetFocus().get();
if (cell) {
KeyboardCapture::Capture(this);

2
src/TrackPanel.h
View File

@ -100,6 +100,7 @@ class AUDACITY_DLL_API TrackPanel final
void OnTimer(wxTimerEvent& event);
void OnODTask(wxCommandEvent &event);
void OnProjectSettingsChange(wxCommandEvent &event);
void OnTrackFocusChange( wxCommandEvent &event );
int GetLeftOffset() const { return GetLabelWidth() + 1;}
@ -148,7 +149,6 @@ class AUDACITY_DLL_API TrackPanel final
bool IsAudioActive();
public:
size_t GetTrackCount() const;
size_t GetSelectedTrackCount() const;
protected:

64
src/TrackPanelAx.cpp
View File

@ -30,16 +30,20 @@
#include <wx/intl.h>
#include "Project.h"
#include "Track.h"
#include "TrackPanel.h"
TrackPanelAx::TrackPanelAx( wxWindow *window )
wxDEFINE_EVENT(EVT_TRACK_FOCUS_CHANGE, wxCommandEvent);
TrackPanelAx::TrackPanelAx( AudacityProject &project )
:
#if wxUSE_ACCESSIBILITY
:WindowAccessible( window )
WindowAccessible( nullptr ) // window pointer must be set after construction
,
#endif
mProject{ project }
{
mTrackPanel = wxDynamicCast( window, TrackPanel );
mTrackName = true;
mMessageCount = 0;
mNumFocusedTrack = 0;
@ -49,6 +53,11 @@ TrackPanelAx::~TrackPanelAx()
{
}
TrackList &TrackPanelAx::GetTracks()
{
return TrackList::Get( mProject );
}
// Returns currently focused track
// if that track no longer exists, if there is a track at
// the same position, use that, else if there is a first
@ -65,7 +74,7 @@ std::shared_ptr<Track> TrackPanelAx::GetFocus()
}
if (!focusedTrack) {
focusedTrack =
Track::SharedPointer( *mTrackPanel->GetTracks()->Any().first );
Track::SharedPointer( *GetTracks().Any().first );
// only call SetFocus if the focus has changed to avoid
// unnecessary focus events
if (focusedTrack)
@ -93,25 +102,28 @@ std::shared_ptr<Track> TrackPanelAx::SetFocus( std::shared_ptr<Track> track )
if( focusedTrack && !focusedTrack->GetSelected() )
{
NotifyEvent( wxACC_EVENT_OBJECT_SELECTIONREMOVE,
mTrackPanel,
GetWindow(),
wxOBJID_CLIENT,
TrackNum( focusedTrack ) );
}
#endif
if( !track )
track = Track::SharedPointer( *mTrackPanel->GetTracks()->Any().begin() );
track = Track::SharedPointer( *GetTracks().Any().begin() );
if ( mFocusedTrack.lock() != track ) {
mFocusedTrack = track;
mProject.QueueEvent( safenew wxCommandEvent{ EVT_TRACK_FOCUS_CHANGE } );
}
mNumFocusedTrack = TrackNum(track);
#if wxUSE_ACCESSIBILITY
if( track )
{
if (mTrackPanel == wxWindow::FindFocus())
if (GetWindow() == wxWindow::FindFocus())
{
NotifyEvent( wxACC_EVENT_OBJECT_FOCUS,
mTrackPanel,
GetWindow(),
wxOBJID_CLIENT,
mNumFocusedTrack );
}
@ -119,7 +131,7 @@ std::shared_ptr<Track> TrackPanelAx::SetFocus( std::shared_ptr<Track> track )
if( track->GetSelected() )
{
NotifyEvent( wxACC_EVENT_OBJECT_SELECTION,
mTrackPanel,
GetWindow(),
wxOBJID_CLIENT,
mNumFocusedTrack );
}
@ -127,7 +139,7 @@ std::shared_ptr<Track> TrackPanelAx::SetFocus( std::shared_ptr<Track> track )
else
{
NotifyEvent(wxACC_EVENT_OBJECT_FOCUS,
mTrackPanel,
GetWindow(),
wxOBJID_CLIENT,
wxACC_SELF);
}
@ -146,7 +158,7 @@ bool TrackPanelAx::IsFocused( const Track *track )
// Remap track pointer if there are oustanding pending updates
auto origTrack =
mTrackPanel->GetTracks()->FindById( track->GetId() );
GetTracks().FindById( track->GetId() );
if (origTrack)
track = origTrack;
@ -161,7 +173,7 @@ int TrackPanelAx::TrackNum( const std::shared_ptr<Track> &target )
// found
int ndx = 0;
for ( auto t : mTrackPanel->GetTracks()->Leaders() )
for ( auto t : GetTracks().Leaders() )
{
ndx++;
if( t == target.get() )
@ -177,7 +189,7 @@ std::shared_ptr<Track> TrackPanelAx::FindTrack( int num )
{
int ndx = 0;
for ( auto t : mTrackPanel->GetTracks()->Leaders() )
for ( auto t : GetTracks().Leaders() )
{
ndx++;
if( ndx == num )
@ -196,12 +208,12 @@ void TrackPanelAx::Updated()
// The object_focus event is only needed by Window-Eyes
// and can be removed when we cease to support this screen reader.
NotifyEvent(wxACC_EVENT_OBJECT_FOCUS,
mTrackPanel,
GetWindow(),
wxOBJID_CLIENT,
TrackNum(t));
NotifyEvent(wxACC_EVENT_OBJECT_NAMECHANGE,
mTrackPanel,
GetWindow(),
wxOBJID_CLIENT,
TrackNum(t));
#endif
@ -210,7 +222,7 @@ void TrackPanelAx::Updated()
void TrackPanelAx::MessageForScreenReader(const wxString& message)
{
#if wxUSE_ACCESSIBILITY
if (mTrackPanel == wxWindow::FindFocus())
if (GetWindow() == wxWindow::FindFocus())
{
auto t = GetFocus();
int childId = t ? TrackNum(t) : 0;
@ -225,7 +237,7 @@ void TrackPanelAx::MessageForScreenReader(const wxString& message)
mTrackName = false;
NotifyEvent(wxACC_EVENT_OBJECT_NAMECHANGE,
mTrackPanel,
GetWindow(),
wxOBJID_CLIENT,
childId);
}
@ -254,7 +266,7 @@ wxAccStatus TrackPanelAx::GetChild( int childId, wxAccessible** child )
// Gets the number of children.
wxAccStatus TrackPanelAx::GetChildCount( int* childCount )
{
*childCount = mTrackPanel->GetTrackCount();
*childCount = GetTracks().Leaders().size();
return wxACC_OK;
}
@ -304,7 +316,7 @@ wxAccStatus TrackPanelAx::GetLocation( wxRect& rect, int elementId )
if( elementId == wxACC_SELF )
{
rect = mTrackPanel->GetRect();
rect = GetWindow()->GetRect();
}
else
{
@ -315,7 +327,7 @@ wxAccStatus TrackPanelAx::GetLocation( wxRect& rect, int elementId )
return wxACC_FAIL;
}
rect = mTrackPanel->FindTrackRect( t.get() );
rect = mFinder ? mFinder( *t ) : wxRect{};
// Inflate the screen reader's rectangle so it overpaints Audacity's own
// yellow focus rectangle.
#ifdef __WXMAC__
@ -326,7 +338,7 @@ wxAccStatus TrackPanelAx::GetLocation( wxRect& rect, int elementId )
rect.Inflate(dx, dx);
}
rect.SetPosition( mTrackPanel->GetParent()->ClientToScreen( rect.GetPosition() ) );
rect.SetPosition( GetWindow()->GetParent()->ClientToScreen( rect.GetPosition() ) );
return wxACC_OK;
}
@ -593,7 +605,7 @@ wxAccStatus TrackPanelAx::GetFocus( int *childId, wxAccessible **child )
{
#if defined(__WXMSW__)
if (mTrackPanel == wxWindow::FindFocus())
if (GetWindow() == wxWindow::FindFocus())
{
auto focusedTrack = mFocusedTrack.lock();
if (focusedTrack)
@ -703,8 +715,8 @@ wxAccStatus TrackPanelAx::Select(int childId, wxAccSelectionFlags selectFlags)
Track* t = FindTrack(childId).get();
if (t) {
mTrackPanel->SetFocusedTrack(t);
t->EnsureVisible( true );
SetFocus( t->SharedPointer() );
t->EnsureVisible();
}
}
else

27
src/TrackPanelAx.h
View File

@ -11,8 +11,10 @@
#ifndef __AUDACITY_TRACK_PANEL_ACCESSIBILITY__
#define __AUDACITY_TRACK_PANEL_ACCESSIBILITY__
#include <functional>
#include <memory>
#include <wx/event.h> // to declare custom event types
#include <wx/setup.h> // for wxUSE_* macros
#include <wx/string.h> // member variable
@ -21,9 +23,15 @@
#include "widgets/WindowAccessible.h" // to inherit
#endif
class wxRect;
class AudacityProject;
class Track;
class TrackPanel;
class TrackList;
// An event sent to the project
wxDECLARE_EXPORTED_EVENT(AUDACITY_DLL_API,
EVT_TRACK_FOCUS_CHANGE, wxCommandEvent);
class TrackPanelAx final
#if wxUSE_ACCESSIBILITY
@ -31,9 +39,12 @@ class TrackPanelAx final
#endif
{
public:
TrackPanelAx(wxWindow * window);
TrackPanelAx(AudacityProject &project);
virtual ~ TrackPanelAx();
using RectangleFinder = std::function< wxRect( Track& ) >;
void SetFinder( const RectangleFinder &finder ) { mFinder = finder; }
// Returns currently focused track or first one if none focused
std::shared_ptr<Track> GetFocus();
@ -114,14 +125,24 @@ public:
// Modify focus or selection
wxAccStatus Select(int childId, wxAccSelectionFlags selectFlags) override;
#else
wxWindow *GetWindow() const { return mWindow; }
void SetWindow( wxWindow *window ) { mWindow = window; }
#endif
private:
TrackList &GetTracks();
int TrackNum( const std::shared_ptr<Track> &track );
std::shared_ptr<Track> FindTrack( int num );
TrackPanel *mTrackPanel;
AudacityProject &mProject;
#if !wxUSE_ACCESSIBILITY
wxWindow *mWindow{};
#endif
RectangleFinder mFinder;
std::weak_ptr<Track> mFocusedTrack;
int mNumFocusedTrack;

2
src/tracks/ui/TrackSelectHandle.cpp
View File

@ -145,7 +145,7 @@ UIHandle::Result TrackSelectHandle::Drag
HitTestPreview TrackSelectHandle::Preview
(const TrackPanelMouseState &, const AudacityProject *project)
{
const auto trackCount = TrackPanel::Get( *project ).GetTrackCount();
const auto trackCount = TrackList::Get( *project ).Leaders().size();
auto message = Message(trackCount);
if (mClicked) {
static auto disabledCursor =