libs-gui/Documentation/gsdoc/NSSliderCell.gsdoc
Richard Frith-MacDonald f086b4e60a Fixed linking
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<?xml version="1.0"?>
<!DOCTYPE gsdoc PUBLIC "-//GNUstep//DTD gsdoc 0.6.5//EN" "http://www.gnustep.org/gsdoc-0_6_5.xml">
<gsdoc base="NSSliderCell" prev="NSSlider.html" next="NSSpellChecker.html" up="Gui.html">
<head>
<title>NSSliderCell</title>
<author name="Richard Frith-Macdonald">
<email address="rfm@gnu.org"/>
<url url="http://www.gnustep.org/developers/whoiswho.html"/>
</author>
<author name="James Dessart">
<email address="skwirl@cam.org"/>
</author>
<version>0.2</version>
<date>11 March, 2000</date>
</head>
<body>
<chapter>
<heading>NSSliderCell</heading>
<class name="NSSliderCell" super="NSActionCell">
<declared>Gui/NSSliderCell.h</declared>
<conform>NSCoding</conform>
<desc>
<p>An NSSliderCell controls the behaviour and appearance of an associated NSSlider,
or a single slider in an NSMatrix. Tick marks are defined in the official
standard, but are not implemented in GNUstep.</p>
<p>An NSSliderCell can be customized through its <code>set...</code> methods.
If these do not provide enough customization, a subclass can be created, which
overrides any of the follwing methods: <code>knobRectFlipped:</code>,
<code>drawBarInside:flipped:</code>, <code>drawKnob:</code>,
or <code>prefersTrackingUntilMouseUp</code>.</p>
</desc>
<method type="BOOL" factory="yes">
<sel>prefersTrackingUntilMouseUp</sel>
<desc>
<p>The default implementation returns <code>YES</code>, so that the slider
continues to track the user's movement even if the cursor leaves the slider's
track.</p>
<p>Do not call this method directly. Override it in subclasses where the tracking
behaviour needs to be different.</p>
</desc>
</method>
<method type="BOOL">
<sel>allowsTickMarkValuesOnly</sel>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="double">
<sel>altIncrementValue</sel>
<desc>
<p>Returns the value by which the slider is incremented when the user holds down
the ALT key.</p>
</desc>
</method>
<method type="double">
<sel>closestTickMarkValueToValue:</sel>
<arg type="double">aValue</arg>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="void">
<sel>drawBarInside:</sel>
<arg type="NSRect">aRect</arg>
<sel>flipped:</sel>
<arg type="BOOL">flipped</arg>
<desc>
<p>Draws the slider's track, not including the bezel, in <var>aRect</var></p>
<p><var>flipped</var> indicates whether the control view has a flipped
coordinate system.</p>
<p>Do not call this method directly, it is provided for subclassing only.</p>
</desc>
</method>
<method type="void">
<sel>drawKnob</sel>
<desc>
<p>Calculates the rect in which to draw the knob, then calls <code>drawKnob</code>
Before calling this method, a <code>lockFocus</code> message must be sent to the
cell's control view.</p>
<p>When subclassing NSSliderCell, do not override this method. Override
<code>drawKnob:</code> instead.</p>
</desc>
</method>
<method type="void">
<sel>drawKnob:</sel>
<arg type="NSRect">knobRect</arg>
<desc>
<p>Draws the knob in <var>knobRect</var>. Before calling this method, a
<code>lockFocus</code> message must be sent to the cell's control view.</p>
<p>Do not call this method directly. It is included for subclassing only.</p>
</desc>
</method>
<method type="int">
<sel>indexOfTickMarkAtPoint:</sel>
<arg type="NSPoint">point</arg>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="int">
<sel>isVertical</sel>
<desc>
<p>Returns whether or not the slider is vertical. If, for some reason, this cannot
be determined, for such reasons as the slider is not yet displayed, this method
returns -1. Generally, a slider is considered vertical if its height is greater
than its width.</p>
</desc>
</method>
<method type="NSRect">
<sel>knobRectFlipped:</sel>
<arg type="BOOL">flipped</arg>
<desc>
<p>Returns the rect in which to draw the knob, based on the coordinate system
of the NSSlider or NSMatrix this NSSliderCell is associated with.
<var>flipped</var> indicates whether or not that coordinate system is flipped,
which can be determined by sending the <code>isFlipped</code> message to the
associated NSSlider or NSMatrix.</p>
<p>Do not call this method directly. It is included for subclassing only.</p>
</desc>
</method>
<method type="float">
<sel>knobThickness</sel>
<desc>
<p>Returns the thickness of the slider's knob. This value is in pixels, and is the
size of the knob along the slider's track.</p>
</desc>
</method>
<method type="double">
<sel>maxValue</sel>
<desc>
<p>Returns the maximum value that the slider represents.</p>
</desc>
</method>
<method type="double">
<sel>minValue</sel>
<desc>
<p>Returns the minimum value that the slider represents.</p>
</desc>
</method>
<method type="int">
<sel>numberOfTickMarks</sel>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="NSRect">
<sel>rectOfTickMarkAtIndex:</sel>
<arg type="int">index</arg>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="void">
<sel>setAllowsTickMarkValuesOnly:</sel>
<arg type="BOOL">flag</arg>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="void">
<sel>setAltIncrementValue:</sel>
<arg type="double">increment</arg>
<desc>
<p>Sets the value by which the slider will be be incremented when with the
ALT key down to <var>increment</var>.</p>
</desc>
</method>
<method type="void">
<sel>setKnobThickness:</sel>
<arg type="float">thickness</arg>
<desc>
<p>Sets the thickness of the knob to <var>thickness</var>, in pixels. This value
sets the amount of space which the knob takes up in the slider's track.</p>
</desc>
</method>
<method type="void">
<sel>setMaxValue:</sel>
<arg type="double">aDouble</arg>
<desc>
<p>Sets the maximum value that the sliders represents to <var>maxValue</var>.</p>
</desc>
</method>
<method type="void">
<sel>setMinValue:</sel>
<arg type="double">aDouble</arg>
<desc>
<p>Sets the minimum value that the sliders represents to <var>maxValue</var>.</p>
</desc>
</method>
<method type="void">
<sel>setNumberOfTickMarks:</sel>
<arg type="int">numberOfTickMarks</arg>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="void">
<sel>setTickMarkPosition:</sel>
<arg type="NSTickMarkPosition">position</arg>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="void">
<sel>setTitle:</sel>
<arg type="NSString*">title</arg>
<desc>
<p>Sets the title of the slider to <var>barTitle</var>. This title is displayed
on the slider's track, behind the knob.</p>
</desc>
</method>
<method type="void">
<sel>setTitleCell:</sel>
<arg type="NSCell*">aCell</arg>
<desc>
<p>Sets the cell used to draw the title to <var>titleCell</var>.</p>
</desc>
</method>
<method type="void">
<sel>setTitleColor:</sel>
<arg type="NSColor*">color</arg>
<desc>
<p>Sets the colour with which the title will be drawn to <var>color</var>.</p>
</desc>
</method>
<method type="void">
<sel>setTitleFont:</sel>
<arg type="NSFont*">font</arg>
<desc>
<p>Sets the font with which the title will be drawm to <var>font</var>.</p>
</desc>
</method>
<method type="NSTickMarkPosition">
<sel>tickMarkPosition</sel>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="double">
<sel>tickMarkValueAtIndex:</sel>
<arg type="int">index</arg>
<desc>
<p>As of yet, unimplemented.</p>
</desc>
</method>
<method type="NSString*">
<sel>title</sel>
<desc>
<p>Returns the title of the slider as an <code>NSString</code>.</p>
</desc>
</method>
<method type="id">
<sel>titleCell</sel>
<desc>
<p>Returns the cell used to draw the title.</p>
</desc>
</method>
<method type="NSColor*">
<sel>titleColor</sel>
<desc>
<p>Returns the colour used to draw the title.</p>
</desc>
</method>
<method type="NSFont*">
<sel>titleFont</sel>
<desc>
<p>Returns the font used to draw the title.</p>
</desc>
</method>
<method type="NSRect">
<sel>trackRect</sel>
<desc>
<p>Returns the rect of the track, minus the bezel.</p>
</desc>
</method>
</class>
</chapter>
</body>
</gsdoc>