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- <sect1 id="config-mouse">
- <title>Mouse</title>
-
- <sect2 id="config-mouse-introduction">
- <title>Introduction</title>
-
- <para>The mouse capplet in the <application>GNOME Control
- Center</application> helps to configure properties of the mouse. These
- are:</para>
-
- <itemizedlist>
- <listitem>
- <para>for the <guilabel>General</guilabel> tab: mouse acceleration,
- mouse sensitivity, double-click timout, drag and drop treshold,
- pointer location and left handed or right handed mouse usage</para>
- </listitem>
-
- <listitem>
- <para>for the <guilabel>Accessibility</guilabel> tab: simulated
- secondary click and dwell click</para>
- </listitem>
- </itemizedlist>
- </sect2>
-
- <sect2 id="config-mouse-general">
- <title>The <guilabel>General</guilabel> Tab</title>
-
- <para>The <guilabel>General</guilabel> tab offers the commonly used
- settings of the mouse.</para>
-
- <sect3 id="config-mouse-general-orientation">
- <title>Mouse Orientation</title>
-
- <para>A user controls the mouse differently based on him being right or
- left handed.</para>
-
- <para>If he is right handed, the mouse typically sits on the right hand
- side of the desk. The primary button (action button) is on the left of
- the mouse, so that he can press it with his index finger, while the
- secondary button (menu button) is on the right. </para>
-
- <para>However, if he is left handed, the mouse sits on the left hand
- side of the desk. Consequently, in order to allow him to operate the
- primary button with his index finger of his left hand, the primary and
- the secondary button of the mouse have to be swapped. </para>
-
- <para>That is the purpose of the <guilabel>Mouse Orientation</guilabel>
- setting: select the <guibutton>Right-handed</guibutton> button if you
- are right handed, or the <guibutton>Left-handed</guibutton> button if
- you are left handed. When using the setting appropriate to him, the user
- has the primary button under his index finger. </para>
- </sect3>
-
- <sect3 id="config-mouse-general-cursors-locate">
- <title>Locate Pointer</title>
-
- <para>Sometimes, the user loses where the pointer is. If he selects the
- <guibutton>Show position of pointer when the Control key is
- pressed</guibutton>, he can make the pointer reappear by pressing the
- control key.</para>
- </sect3>
-
- <sect3 id="config-mouse-general-speed">
- <title>Pointer Speed</title>
-
- <para>Every user has different favorites regarding the relation between
- the movement of the mouse and the movement of the pointer. In order to
- tune it to his taste, he can use the <guilabel>Acceleration</guilabel>
- and the <guilabel>Sensitivity</guilabel> settings: </para>
-
- <itemizedlist>
- <listitem>
- <para><guilabel>Acceleration</guilabel>: it sets the linear factor
- between mouse movement and pointer movement</para>
- </listitem>
-
- <listitem>
- <para><guilabel>Sensitivity</guilabel>: it sets the threshold speed
- at which the mouse will start accelerating</para>
- </listitem>
- </itemizedlist>
-
- <para>For example, by setting the sensitivity to its lowest, the mouse
- will move all the time with no acceleration adjustment; in this case,
- there is a perfect mouse distance to pixel distance ratio.</para>
- </sect3>
-
- <sect3 id="config-mouse-general-dnd">
- <title>Drag and Drop</title>
-
- <para>Drag and drop is clicking an object, and dragging it to another
- place on the screen, causing an event to occur.</para>
-
- <para>You need to drag it a certain amount of distance before the system
- will recognize it as a drag and drop operation. To configure how far to
- drag it, move the <guilabel>Treshold</guilabel> slider left or
- right.</para>
- </sect3>
-
- <sect3 id="config-mouse-general-double-click">
- <title>Double-click Delay</title>
-
- <para>When a user performs two clicks with the primary button, the
- system considers them as a double-click or as two single clicks
- depending on the delay that has elapsed between the two clicks. </para>
-
- <para>With the <guilabel>Timeout</guilabel> slider, the user can set the
- maximum delay that can elapse between the two clicks for them to be
- still considered as a double-click. If the delay between the two clicks
- is greater than the maximum delay that has been set, the two clicks are
- considered as two single clicks instead of a double click.</para>
-
- <para>Consequently: the shorter the timeout, the less time can elapse
- between the two clicks of a double-click.</para>
-
- <para>The user can test the timeout that he has set by clicking on the
- light bulb, that will light on, if a double-click is detected.</para>
- </sect3>
- </sect2>
-
- <sect2>
- <title id="config-mouse-a11y">The Accessibility Tab</title>
-
- <para>The <guilabel>Accessibility</guilabel> tab brings additional
- functions to the mouse. It allows the the user to perform a secondary
- click by using the primary button; it also allows him to perform all the
- different click types without using any hardware button.</para>
-
- <sect3 id="config-mouse-a11y-simulated-secondary-click">
- <title>Simulated Secondary Click</title>
-
- <para>There are users that can use only one mouse button. By activating
- the <guilabel>Simulated Secondary Click</guilabel>, these users have a
- direct way to perform secondary clicks with their unique mouse button.
- In fact, the secondary click occurs automatically when the user keeps
- the primary button pressed for a determined delay without moving the
- mouse.</para>
-
- <para>The <guilabel>Simulated Secondary Click</guilabel> also offers a
- slider named <guilabel>Delay</guilabel> to configure how long the user
- has to press the button and keep the mouse motionless, before the
- secondary click is automatically performed.</para>
- </sect3>
-
- <sect3 id="config-mouse-a11y-dwell">
- <title>Dwell Click</title>
-
- <para>There are users that cannot use any hardware button. By activating
- the <guilabel>Dwell Click</guilabel>, they can have the mouse perform
- the various clicks without pressing any mousebutton. The click types
- that can be performed are: single click, double-click, drag click and
- secondary click.</para>
-
- <para>To make the mouse perform the clicks without a mousebutton being
- pressed, the user has to put a mark in the box named <guilabel>Initiate
- click when stopping pointer movement</guilabel>. How the click is
- completed and how the click type is chosen depends on what dwell mode
- the user is using. The two available modes are: </para>
-
- <itemizedlist>
- <listitem>
- <para>automatic click completion with click type chosen
- beforehand</para>
- </listitem>
-
- <listitem>
- <para>click completion and click type choice by a mouse gesture
- after click initiation</para>
- </listitem>
- </itemizedlist>
-
- <para>With the <guilabel>Delay</guilabel> slider, the user can configure
- how long the pointer has to be motionless for the click to be
- initiated.</para>
-
- <para>For people that have trouble to keep the mouse motionless, there
- is the <guilabel>Motion Treshold</guilabel> slider. When the slider is
- set towards low, even little mouse movements are considered; however, by
- setting a higher treshold, the mouse has to traverse a bigger distance
- before it is considered as moving.</para>
-
- <para>As said above, the user can choose between two modes for the click
- type choice and click completion:</para>
-
- <sect4 id="config-mouse-accessibility-dwell-ctw">
- <title>Dwell Click With Automatic Click Completion And Click Type
- Choice Beforehand</title>
-
- <para>This mode is active when the user selects <guilabel>Choose type
- of click beforehand</guilabel>. In fact, after the mouse has been
- motionless for the above predefined delay, the system will
- automatically perform the click type that is selected in the Click
- Type Window. </para>
-
- <para>After the click has occurred, the single click type will be
- automatically restored. In order to choose another click type, the
- user has to perform an automatic click on the
- <guibutton>button</guibutton> in the Click Type Window that
- corresponds to its click type choice.</para>
-
- <para>To make the Click Type Window appear on the screen, the user has
- to put a mark into the checkbox named <guilabel>Show click type
- window</guilabel>. Some users might prefer to use the <guilabel>Dwell
- Click panel applet</guilabel> instead of the Click Type Window. The
- advantage of the panel applet is that it does not cover any open
- window on the desktop.</para>
- </sect4>
-
- <sect4 id="config-mouse-accessibility-dwell-gestures">
- <title>Dwell Click With Click Type Choice And Click Completion By A
- Mouse Gesture</title>
-
- <para>This mode is used when the user selects <guilabel>Choose type of
- click with mouse gestures</guilabel>. In fact, after the mouse has
- been motionless for the above predefined delay, the shape of the
- pointer will change for a little while:</para>
-
- <itemizedlist>
- <listitem>
- <para>If the user moves the mouse while it is showing the
- alternative shape, a click is performed and the pointer returns to
- its normal shape. The type of click performed depends on the
- direction of the movement of the mouse.</para>
- </listitem>
-
- <listitem>
- <para>If the mouse stays motionless until the pointer returns to
- its normal shape, the user can move the mouse without a click
- being performed. The next dwell click can be performed when the
- mouse stops moving again.</para>
- </listitem>
- </itemizedlist>
-
- <para>The user also has the possibility to match click type with
- movement direction by using the 4 <guimenu>popups</guimenu> available
- under this mode.</para>
- </sect4>
- </sect3>
- </sect2>
- </sect1>
-