265 lines
8.8 KiB
Objective-C
265 lines
8.8 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: odcombo.h
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// Purpose: interface of wxOwnerDrawnComboBox
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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enum wxOwnerDrawnComboBoxPaintingFlags
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{
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/**
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Combo control is being painted, instead of a list item.
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Argument item may be @c wxNOT_FOUND in this case.
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*/
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wxODCB_PAINTING_CONTROL = 0x0001,
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/**
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An item with selection background is being painted.
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DC text colour should already be correct.
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*/
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wxODCB_PAINTING_SELECTED = 0x0002
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};
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/**
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New window styles for wxOwnerDrawnComboBox
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*/
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enum
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{
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/**
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Double-clicking cycles item if wxCB_READONLY is also used.
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*/
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wxODCB_DCLICK_CYCLES = wxCC_SPECIAL_DCLICK,
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/**
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If used, control itself is not custom paint using callback.
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Even if this is not used, writable combo is never custom paint
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until SetCustomPaintWidth is called
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*/
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wxODCB_STD_CONTROL_PAINT = 0x1000
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};
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/**
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@class wxOwnerDrawnComboBox
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wxOwnerDrawnComboBox is a combobox with owner-drawn list items.
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In essence, it is a wxComboCtrl with wxVListBox popup and wxControlWithItems
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interface.
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Implementing item drawing and measuring is similar to wxVListBox.
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Application needs to subclass wxOwnerDrawnComboBox and implement
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OnDrawItem(), OnMeasureItem() and OnMeasureItemWidth().
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@beginStyleTable
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@style{wxODCB_DCLICK_CYCLES}
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Double-clicking cycles item if wxCB_READONLY is also used.
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Synonymous with wxCC_SPECIAL_DCLICK.
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@style{wxODCB_STD_CONTROL_PAINT}
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Control itself is not custom painted using OnDrawItem. Even if this
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style is not used, writable wxOwnerDrawnComboBox is never custom
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painted unless SetCustomPaintWidth() is called.
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@endStyleTable
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@see wxComboCtrl window styles and @ref overview_windowstyles.
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@beginEventEmissionTable{wxCommandEvent}
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@event{EVT_COMBOBOX(id, func)}
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Process a wxEVT_COMBOBOX event, when an item on
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the list is selected. Note that calling GetValue() returns the new
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value of selection.
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@endEventTable
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@see Events emitted by wxComboCtrl.
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@library{wxadv}
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@category{ctrl}
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@appearance{ownerdrawncombobox}
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@see wxComboCtrl, wxComboBox, wxVListBox, wxCommandEvent
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*/
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class wxOwnerDrawnComboBox : public wxComboCtrl, public wxItemContainer
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{
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public:
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/**
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Default constructor.
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*/
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wxOwnerDrawnComboBox();
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/**
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Constructor, creating and showing a owner-drawn combobox.
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@param parent
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Parent window. Must not be @NULL.
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@param id
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Window identifier. The value @c wxID_ANY indicates a default value.
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@param value
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Initial selection string. An empty string indicates no selection.
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@param pos
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Window position.
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@param size
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Window size.
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If ::wxDefaultSize is specified then the window is sized appropriately.
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@param n
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Number of strings with which to initialise the control.
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@param choices
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An array of strings with which to initialise the control.
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@param style
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Window style. See wxOwnerDrawnComboBox.
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@param validator
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Window validator.
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@param name
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Window name.
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@see Create(), wxValidator
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*/
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wxOwnerDrawnComboBox(wxWindow* parent, wxWindowID id,
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const wxString& value = wxEmptyString,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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int n = 0,
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const wxString choices[] = NULL,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = "comboBox");
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/**
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Constructor, creating and showing a owner-drawn combobox.
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@param parent
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Parent window. Must not be @NULL.
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@param id
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Window identifier. The value @c wxID_ANY indicates a default value.
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@param value
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Initial selection string. An empty string indicates no selection.
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@param pos
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Window position.
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@param size
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Window size.
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If ::wxDefaultSize is specified then the window is sized appropriately.
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@param choices
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An array of strings with which to initialise the control.
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@param style
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Window style. See wxOwnerDrawnComboBox.
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@param validator
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Window validator.
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@param name
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Window name.
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@see Create(), wxValidator
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*/
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wxOwnerDrawnComboBox(wxWindow* parent, wxWindowID id,
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const wxString& value,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayString& choices,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = "comboBox");
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/**
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Destructor, destroying the owner-drawn combobox.
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*/
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virtual ~wxOwnerDrawnComboBox();
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//@{
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/**
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Creates the combobox for two-step construction.
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See wxOwnerDrawnComboBox() for further details.
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@remarks Derived classes should call or replace this function.
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*/
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxString& value = wxEmptyString,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxComboBoxNameStr);
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxString& value,
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const wxPoint& pos,
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const wxSize& size,
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int n,
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const wxString choices[],
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxComboBoxNameStr);
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxString& value,
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const wxPoint& pos,
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const wxSize& size,
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const wxArrayString& choices,
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long style = 0,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxComboBoxNameStr);
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//@}
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/**
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Returns index to the widest item in the list.
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*/
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virtual int GetWidestItem();
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/**
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Returns width of the widest item in the list.
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*/
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virtual int GetWidestItemWidth();
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protected:
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/**
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This method is used to draw the items background and, maybe, a border around it.
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The base class version implements a reasonable default behaviour which consists
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in drawing the selected item with the standard background colour and drawing a
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border around the item if it is either selected or current.
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@remarks flags has the same meaning as with OnDrawItem().
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*/
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virtual void OnDrawBackground(wxDC& dc, const wxRect& rect, int item,
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int flags) const;
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/**
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The derived class may implement this function to actually draw the item
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with the given index on the provided DC.
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If function is not implemented, the item text is simply drawn, as if the control
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was a normal combobox.
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@param dc
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The device context to use for drawing
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@param rect
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The bounding rectangle for the item being drawn (DC clipping
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region is set to this rectangle before calling this function)
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@param item
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The index of the item to be drawn
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@param flags
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A combination of the ::wxOwnerDrawnComboBoxPaintingFlags enumeration values.
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*/
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virtual void OnDrawItem(wxDC& dc, const wxRect& rect, int item,
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int flags) const;
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/**
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The derived class may implement this method to return the height of the
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specified item (in pixels).
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The default implementation returns text height, as if this control was
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a normal combobox.
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*/
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virtual wxCoord OnMeasureItem(size_t item) const;
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/**
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The derived class may implement this method to return the width of the
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specified item (in pixels). If -1 is returned, then the item text width
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is used.
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The default implementation returns -1.
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*/
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virtual wxCoord OnMeasureItemWidth(size_t item) const;
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};
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