401 lines
12 KiB
Objective-C
401 lines
12 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: slider.h
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// Purpose: interface of wxSlider
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#define wxSL_HORIZONTAL wxHORIZONTAL /* 0x0004 */
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#define wxSL_VERTICAL wxVERTICAL /* 0x0008 */
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#define wxSL_TICKS 0x0010
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#define wxSL_AUTOTICKS wxSL_TICKS // we don't support manual ticks
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#define wxSL_LEFT 0x0040
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#define wxSL_TOP 0x0080
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#define wxSL_RIGHT 0x0100
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#define wxSL_BOTTOM 0x0200
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#define wxSL_BOTH 0x0400
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#define wxSL_SELRANGE 0x0800
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#define wxSL_INVERSE 0x1000
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#define wxSL_MIN_MAX_LABELS 0x2000
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#define wxSL_VALUE_LABEL 0x4000
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#define wxSL_LABELS (wxSL_MIN_MAX_LABELS|wxSL_VALUE_LABEL)
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/**
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@class wxSlider
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A slider is a control with a handle which can be pulled back and forth to
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change the value.
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On Windows, the track bar control is used.
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Slider generates the same events as wxScrollBar but in practice the most
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convenient way to process wxSlider updates is by handling the
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slider-specific @c wxEVT_SLIDER event which carries wxCommandEvent
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containing just the latest slider position.
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@beginStyleTable
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@style{wxSL_HORIZONTAL}
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Displays the slider horizontally (this is the default).
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@style{wxSL_VERTICAL}
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Displays the slider vertically.
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@style{wxSL_AUTOTICKS}
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Displays tick marks. Windows only.
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@style{wxSL_MIN_MAX_LABELS}
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Displays minimum, maximum labels (new since wxWidgets 2.9.1).
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@style{wxSL_VALUE_LABEL}
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Displays value label (new since wxWidgets 2.9.1).
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@style{wxSL_LABELS}
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Displays minimum, maximum and value labels (same as wxSL_VALUE_LABEL
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and wxSL_MIN_MAX_LABELS together).
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@style{wxSL_LEFT}
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Displays ticks on the left and forces the slider to be vertical.
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@style{wxSL_RIGHT}
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Displays ticks on the right and forces the slider to be vertical.
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@style{wxSL_TOP}
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Displays ticks on the top.
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@style{wxSL_BOTTOM}
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Displays ticks on the bottom (this is the default).
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@style{wxSL_SELRANGE}
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Displays a highlighted selection range. Windows only.
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@style{wxSL_INVERSE}
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Inverses the minimum and maximum endpoints on the slider. Not
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compatible with wxSL_SELRANGE.
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@endStyleTable
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Notice that @c wxSL_LEFT, @c wxSL_TOP, @c wxSL_RIGHT and @c wxSL_BOTTOM
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specify the position of the slider ticks in MSW implementation and that the
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slider labels, if any, are positioned on the opposite side. So, to have a
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label on the left side of a vertical slider, @b wxSL_RIGHT must be used (or
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none of these styles at all should be specified as left and top are default
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positions for the vertical and horizontal sliders respectively).
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@beginEventEmissionTable{wxScrollEvent}
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You can use EVT_COMMAND_SCROLL... macros with window IDs for when intercepting
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scroll events from controls, or EVT_SCROLL... macros without window IDs for
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intercepting scroll events from the receiving window -- except for this,
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the macros behave exactly the same.
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@event{EVT_SCROLL(func)}
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Process all scroll events.
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@event{EVT_SCROLL_TOP(func)}
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Process @c wxEVT_SCROLL_TOP scroll-to-top events (minimum position).
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@event{EVT_SCROLL_BOTTOM(func)}
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Process @c wxEVT_SCROLL_BOTTOM scroll-to-bottom events (maximum position).
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@event{EVT_SCROLL_LINEUP(func)}
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Process @c wxEVT_SCROLL_LINEUP line up events.
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@event{EVT_SCROLL_LINEDOWN(func)}
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Process @c wxEVT_SCROLL_LINEDOWN line down events.
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@event{EVT_SCROLL_PAGEUP(func)}
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Process @c wxEVT_SCROLL_PAGEUP page up events.
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@event{EVT_SCROLL_PAGEDOWN(func)}
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Process @c wxEVT_SCROLL_PAGEDOWN page down events.
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@event{EVT_SCROLL_THUMBTRACK(func)}
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Process @c wxEVT_SCROLL_THUMBTRACK thumbtrack events
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(frequent events sent as the user drags the thumbtrack).
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@event{EVT_SCROLL_THUMBRELEASE(func)}
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Process @c wxEVT_SCROLL_THUMBRELEASE thumb release events.
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@event{EVT_SCROLL_CHANGED(func)}
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Process @c wxEVT_SCROLL_CHANGED end of scrolling events (MSW only).
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@event{EVT_COMMAND_SCROLL(id, func)}
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Process all scroll events.
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@event{EVT_COMMAND_SCROLL_TOP(id, func)}
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Process @c wxEVT_SCROLL_TOP scroll-to-top events (minimum position).
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@event{EVT_COMMAND_SCROLL_BOTTOM(id, func)}
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Process @c wxEVT_SCROLL_BOTTOM scroll-to-bottom events (maximum position).
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@event{EVT_COMMAND_SCROLL_LINEUP(id, func)}
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Process @c wxEVT_SCROLL_LINEUP line up events.
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@event{EVT_COMMAND_SCROLL_LINEDOWN(id, func)}
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Process @c wxEVT_SCROLL_LINEDOWN line down events.
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@event{EVT_COMMAND_SCROLL_PAGEUP(id, func)}
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Process @c wxEVT_SCROLL_PAGEUP page up events.
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@event{EVT_COMMAND_SCROLL_PAGEDOWN(id, func)}
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Process @c wxEVT_SCROLL_PAGEDOWN page down events.
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@event{EVT_COMMAND_SCROLL_THUMBTRACK(id, func)}
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Process @c wxEVT_SCROLL_THUMBTRACK thumbtrack events
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(frequent events sent as the user drags the thumbtrack).
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@event{EVT_COMMAND_SCROLL_THUMBRELEASE(func)}
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Process @c wxEVT_SCROLL_THUMBRELEASE thumb release events.
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@event{EVT_COMMAND_SCROLL_CHANGED(func)}
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Process @c wxEVT_SCROLL_CHANGED end of scrolling events (MSW only).
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@event{EVT_SLIDER(id, func)}
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Process @c wxEVT_SLIDER which is generated after any
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change of wxSlider position in addition to one of the events above.
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Notice that the handler of this event receives a wxCommandEvent as
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argument and not wxScrollEvent, as all the other handlers.
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@endEventTable
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@section slider_diff The difference between EVT_SCROLL_THUMBRELEASE and EVT_SCROLL_CHANGED
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The EVT_SCROLL_THUMBRELEASE event is only emitted when actually dragging the
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thumb using the mouse and releasing it (This EVT_SCROLL_THUMBRELEASE event
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is also followed by an EVT_SCROLL_CHANGED event).
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The EVT_SCROLL_CHANGED event also occurs when using the keyboard to change
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the thumb position, and when clicking next to the thumb
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(In all these cases the EVT_SCROLL_THUMBRELEASE event does not happen).
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In short, the EVT_SCROLL_CHANGED event is triggered when scrolling/ moving
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has finished independently of the way it had started.
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Please see the widgets sample ("Slider" page) to see the difference between
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EVT_SCROLL_THUMBRELEASE and EVT_SCROLL_CHANGED in action.
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@library{wxcore}
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@category{ctrl}
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@appearance{slider}
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@see @ref overview_events, wxScrollBar
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*/
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class wxSlider : public wxControl
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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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wxSlider();
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/**
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Constructor, creating and showing a slider.
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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 wxID_ANY indicates a default value.
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@param value
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Initial position for the slider.
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@param minValue
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Minimum slider position.
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@param maxValue
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Maximum slider position.
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@param pos
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Window position.
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If ::wxDefaultPosition is specified then a default position is chosen.
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@param size
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Window size.
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If ::wxDefaultSize is specified then a default size is chosen.
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@param style
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Window style. See wxSlider.
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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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wxSlider(wxWindow* parent, wxWindowID id, int value,
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int minValue, int maxValue,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxSL_HORIZONTAL,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxSliderNameStr);
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/**
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Destructor, destroying the slider.
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*/
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virtual ~wxSlider();
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/**
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Clears the selection, for a slider with the @b wxSL_SELRANGE style.
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@onlyfor{wxmsw}
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*/
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virtual void ClearSel();
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/**
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Clears the ticks.
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@onlyfor{wxmsw}
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*/
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virtual void ClearTicks();
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/**
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Used for two-step slider construction.
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See wxSlider() for further details.
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*/
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bool Create(wxWindow* parent, wxWindowID id, int value, int minValue,
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int maxValue, const wxPoint& point = wxDefaultPosition,
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const wxSize& size = wxDefaultSize, long style = wxSL_HORIZONTAL,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxSliderNameStr);
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/**
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Returns the line size.
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@see SetLineSize()
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*/
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virtual int GetLineSize() const;
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/**
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Gets the maximum slider value.
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@see GetMin(), SetRange()
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*/
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virtual int GetMax() const;
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/**
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Gets the minimum slider value.
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@see GetMin(), SetRange()
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*/
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virtual int GetMin() const;
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/**
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Returns the page size.
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@see SetPageSize()
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*/
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virtual int GetPageSize() const;
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/**
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Returns the selection end point.
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@onlyfor{wxmsw}
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@see GetSelStart(), SetSelection()
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*/
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virtual int GetSelEnd() const;
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/**
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Returns the selection start point.
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@onlyfor{wxmsw}
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@see GetSelEnd(), SetSelection()
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*/
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virtual int GetSelStart() const;
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/**
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Returns the thumb length.
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@onlyfor{wxmsw}
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@see SetThumbLength()
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*/
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virtual int GetThumbLength() const;
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/**
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Returns the tick frequency.
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@onlyfor{wxmsw}
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@see SetTickFreq()
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*/
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virtual int GetTickFreq() const;
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/**
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Gets the current slider value.
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@see GetMin(), GetMax(), SetValue()
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*/
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virtual int GetValue() const;
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/**
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Sets the line size for the slider.
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@param lineSize
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The number of steps the slider moves when the user moves it up
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or down a line.
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@see GetLineSize()
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*/
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virtual void SetLineSize(int lineSize);
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/**
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Sets the minimum slider value.
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@param minValue
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The new bottom end of the slider range.
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@see GetMin(), SetRange()
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*/
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void SetMin( int minValue );
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/**
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Sets the maximum slider value.
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@param maxValue
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The new top end of the slider range.
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@see GetMax(), SetRange()
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*/
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void SetMax( int maxValue );
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/**
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Sets the page size for the slider.
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@param pageSize
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The number of steps the slider moves when the user pages up or down.
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@see GetPageSize()
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*/
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virtual void SetPageSize(int pageSize);
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/**
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Sets the minimum and maximum slider values.
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@see GetMin(), GetMax()
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*/
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virtual void SetRange(int minValue, int maxValue);
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/**
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Sets the selection.
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@param startPos
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The selection start position.
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@param endPos
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The selection end position.
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@onlyfor{wxmsw}
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@see GetSelStart(), GetSelEnd()
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*/
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virtual void SetSelection(int startPos, int endPos);
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/**
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Sets the slider thumb length.
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@param len
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The thumb length.
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@onlyfor{wxmsw}
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@see GetThumbLength()
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*/
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virtual void SetThumbLength(int len);
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/**
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Sets a tick position.
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@param tickPos
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The tick position.
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@onlyfor{wxmsw}
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@see SetTickFreq()
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*/
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virtual void SetTick(int tickPos);
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/**
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Sets the tick mark frequency and position.
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@param n
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Frequency. For example, if the frequency is set to two, a tick mark is
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displayed for every other increment in the slider's range.
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@onlyfor{wxmsw}
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@see GetTickFreq()
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*/
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virtual void SetTickFreq(int n);
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/**
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Sets the slider position.
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@param value
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The slider position.
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*/
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virtual void SetValue(int value);
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};
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