323 lines
8.8 KiB
C++
323 lines
8.8 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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Grid.h
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Leland Lucius
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**********************************************************************/
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#ifndef __AUDACITY_WIDGETS_GRID__
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#define __AUDACITY_WIDGETS_GRID__
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#include <wx/defs.h>
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#include <wx/choice.h>
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#include <wx/dynarray.h>
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#include <wx/event.h>
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#include <wx/grid.h>
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#include <wx/string.h>
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#include <wx/window.h>
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#if wxUSE_ACCESSIBILITY
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#include <wx/access.h>
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class GridAx;
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#endif
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class NumericTextCtrl;
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// ----------------------------------------------------------------------------
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// TimeEditor
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//
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// wxGridCellEditor for the NumericTextCtrl.
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// ----------------------------------------------------------------------------
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#define GRID_VALUE_TIME wxT("Time")
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class TimeEditor:public wxGridCellEditor
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{
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public:
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TimeEditor();
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TimeEditor(const wxString &format, double rate);
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~TimeEditor();
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// Precondition: parent != NULL
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void Create(wxWindow *parent, wxWindowID id, wxEvtHandler *handler);
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bool IsAcceptedKey(wxKeyEvent &event);
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void SetSize(const wxRect &rect);
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void BeginEdit(int row, int col, wxGrid *grid);
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bool EndEdit(int row, int col, wxGrid *grid);
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bool EndEdit(int row, int col, const wxGrid *grid, const wxString &oldval, wxString *newval);
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void ApplyEdit(int row, int col, wxGrid *grid);
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void Reset();
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wxString GetFormat();
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double GetRate();
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void SetFormat(const wxString &format);
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void SetRate(double rate);
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wxGridCellEditor *Clone() const;
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wxString GetValue() const;
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NumericTextCtrl *GetTimeCtrl() const { return (NumericTextCtrl *)m_control; }
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private:
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wxString mFormat;
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double mRate;
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double mOld;
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wxString mOldString;
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wxString mValueAsString;
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};
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// ----------------------------------------------------------------------------
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// TimeRenderer
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//
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// wxGridCellRenderer for the NumericTextCtrl.
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// ----------------------------------------------------------------------------
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class TimeRenderer : public wxGridCellRenderer
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{
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public:
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void Draw(wxGrid &grid,
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wxGridCellAttr &attr,
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wxDC &dc,
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const wxRect &rect,
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int row,
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int col,
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bool isSelected);
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wxSize GetBestSize(wxGrid &grid,
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wxGridCellAttr &attr,
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wxDC &dc,
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int row,
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int col);
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wxGridCellRenderer *Clone() const;
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};
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// ----------------------------------------------------------------------------
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// ChoiceEditor
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//
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// Modified version of wxGridChoiceEditor using wxChoice instead of wxComboBox.
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// ----------------------------------------------------------------------------
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#define GRID_VALUE_CHOICE wxT("Choice")
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class ChoiceEditor : public wxGridCellEditor, wxEvtHandler
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{
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public:
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ChoiceEditor(size_t count = 0,
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const wxString choices[] = NULL);
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ChoiceEditor(const wxArrayString &choices);
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~ChoiceEditor();
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virtual void Create(wxWindow *parent,
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wxWindowID id,
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wxEvtHandler *evtHandler);
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void SetSize(const wxRect &rect);
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void BeginEdit(int row, int col, wxGrid *grid);
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bool EndEdit(int row, int col, wxGrid *grid);
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bool EndEdit(int row, int col, const wxGrid *grid, const wxString &oldval, wxString *newval);
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void ApplyEdit(int row, int col, wxGrid *grid);
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void Reset();
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wxGridCellEditor *Clone() const;
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void SetChoices(const wxArrayString &choices);
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wxString GetValue() const;
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protected:
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wxChoice *Choice() const { return (wxChoice *)m_control; }
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private:
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// A whole separate class just to get rid of Visual C++ warning C4407
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class FocusHandler:wxEvtHandler
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{
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public:
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void ConnectEvent(wxWindow *w)
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{
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w->GetEventHandler()->Connect(wxEVT_KILL_FOCUS, wxFocusEventHandler(FocusHandler::OnKillFocus));
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};
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void DisconnectEvent(wxWindow *w)
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{
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w->GetEventHandler()->Disconnect(wxEVT_KILL_FOCUS, wxFocusEventHandler(FocusHandler::OnKillFocus));
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};
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void OnKillFocus(wxFocusEvent & WXUNUSED(event))
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{
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return;
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};
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} mHandler;
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wxArrayString mChoices;
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wxString mOld;
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wxString mValueAsString;
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};
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// ----------------------------------------------------------------------------
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// Grid
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//
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// wxGrid with support for accessibility.
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// ----------------------------------------------------------------------------
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class Grid
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: public wxGrid
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{
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public:
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Grid(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxWANTS_CHARS | wxBORDER,
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const wxString& name = wxPanelNameStr);
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~Grid();
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#if wxUSE_ACCESSIBILITY
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void ClearGrid();
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bool InsertRows(int pos = 0, int numRows = 1, bool updateLabels = true);
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bool AppendRows(int numRows = 1, bool updateLabels = true);
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bool DeleteRows(int pos = 0, int numRows = 1, bool updateLabels = true);
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bool InsertCols(int pos = 0, int numCols = 1, bool updateLabels = true);
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bool AppendCols(int numCols = 1, bool updateLabels = true);
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bool DeleteCols(int pos = 0, int numCols = 1, bool updateLabels = true);
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GridAx *GetNextAx(GridAx *parent, wxAccRole role, int row, int col);
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#endif
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protected:
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void OnSetFocus(wxFocusEvent &event);
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void OnSelectCell(wxGridEvent &event);
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void OnKeyDown(wxKeyEvent &event);
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private:
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#if wxUSE_ACCESSIBILITY
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GridAx *mAx;
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wxArrayPtrVoid mChildren;
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int mObjNdx;
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#endif
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public:
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DECLARE_EVENT_TABLE();
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};
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#if wxUSE_ACCESSIBILITY
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// ----------------------------------------------------------------------------
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// GridAx
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//
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// wxAccessible object providing grid information for Grid.
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// ----------------------------------------------------------------------------
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class GridAx
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: public wxWindowAccessible
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{
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public:
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GridAx(Grid *grid);
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void SetCurrentCell(int row, int col);
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void TableUpdated();
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bool GetRowCol(int childId, int & row, int & col);
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// Retrieves the address of an IDispatch interface for the specified child.
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// All objects must support this property.
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virtual wxAccStatus GetChild(int childId, wxAccessible **child);
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// Gets the number of children.
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virtual wxAccStatus GetChildCount(int *childCount);
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// Gets the default action for this object (0) or > 0 (the action for a child).
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// Return wxACC_OK even if there is no action. actionName is the action, or the empty
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// string if there is no action.
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// The retrieved string describes the action that is performed on an object,
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// not what the object does as a result. For example, a toolbar button that prints
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// a document has a default action of "Press" rather than "Prints the current document."
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virtual wxAccStatus GetDefaultAction(int childId, wxString *actionName);
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// Returns the description for this object or a child.
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virtual wxAccStatus GetDescription(int childId, wxString *description);
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// Gets the window with the keyboard focus.
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// If childId is 0 and child is NULL, no object in
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// this subhierarchy has the focus.
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// If this object has the focus, child should be 'this'.
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virtual wxAccStatus GetFocus(int *childId, wxAccessible **child);
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// Returns help text for this object or a child, similar to tooltip text.
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virtual wxAccStatus GetHelpText(int childId, wxString *helpText);
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// Returns the keyboard shortcut for this object or child.
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// Return e.g. ALT+K
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virtual wxAccStatus GetKeyboardShortcut(int childId, wxString *shortcut);
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// Returns the rectangle for this object (id = 0) or a child element (id > 0).
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// rect is in screen coordinates.
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virtual wxAccStatus GetLocation(wxRect & rect, int elementId);
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// Gets the name of the specified object.
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virtual wxAccStatus GetName(int childId, wxString *name);
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// Gets the parent, or NULL.
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virtual wxAccStatus GetParent(wxAccessible **parent);
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// Returns a role constant.
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virtual wxAccStatus GetRole(int childId, wxAccRole *role);
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// Gets a variant representing the selected children
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// of this object.
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// Acceptable values:
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// - a null variant (IsNull() returns TRUE)
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// - a list variant (GetType() == wxT("list"))
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// - an integer representing the selected child element,
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// or 0 if this object is selected (GetType() == wxT("long"))
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// - a "void*" pointer to a wxAccessible child object
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virtual wxAccStatus GetSelections( wxVariant *selections );
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// Returns a state constant.
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virtual wxAccStatus GetState(int childId, long* state);
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// Returns a localized string representing the value for the object
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// or child.
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virtual wxAccStatus GetValue(int childId, wxString* strValue);
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#if defined(__WXMAC__)
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// Selects the object or child.
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virtual wxAccStatus Select(int childId, wxAccSelectionFlags selectFlags);
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#endif
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Grid *mGrid;
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int mLastId;
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};
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#endif
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#endif
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