[PATCH libinput 11/11] doc: add documentation for touchpad gestures
Peter Hutterer
peter.hutterer at who-t.net
Thu Jul 2 21:15:49 PDT 2015
Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
doc/Makefile.am | 4 +
doc/gestures.dox | 91 ++++++
doc/svg/pinch-gestures.svg | 612 +++++++++++++++++++++++++++++++++++++++
doc/svg/swipe-gestures.svg | 512 ++++++++++++++++++++++++++++++++
doc/svg/touchscreen-gestures.svg | 440 ++++++++++++++++++++++++++++
src/libinput.h | 2 +
6 files changed, 1661 insertions(+)
create mode 100644 doc/gestures.dox
create mode 100644 doc/svg/pinch-gestures.svg
create mode 100644 doc/svg/swipe-gestures.svg
create mode 100644 doc/svg/touchscreen-gestures.svg
diff --git a/doc/Makefile.am b/doc/Makefile.am
index 58ae216..efd4d85 100644
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -14,6 +14,7 @@ header_files = \
$(srcdir)/clickpad-softbuttons.dox \
$(srcdir)/device-configuration-via-udev.dox \
$(srcdir)/faqs.dox \
+ $(srcdir)/gestures.dox \
$(srcdir)/normalization-of-relative-motion.dox \
$(srcdir)/palm-detection.dox \
$(srcdir)/scrolling.dox \
@@ -33,8 +34,11 @@ diagram_files = \
$(srcdir)/svg/button-scrolling.svg \
$(srcdir)/svg/edge-scrolling.svg \
$(srcdir)/svg/palm-detection.svg \
+ $(srcdir)/svg/pinch-gestures.svg \
+ $(srcdir)/svg/swipe-gestures.svg \
$(srcdir)/svg/tap-n-drag.svg \
$(srcdir)/svg/top-software-buttons.svg \
+ $(srcdir)/svg/touchscreen-gestures.svg \
$(srcdir)/svg/twofinger-scrolling.svg
html/index.html: libinput.doxygen $(header_files) $(diagram_files)
diff --git a/doc/gestures.dox b/doc/gestures.dox
new file mode 100644
index 0000000..a8cef36
--- /dev/null
+++ b/doc/gestures.dox
@@ -0,0 +1,91 @@
+/**
+ at page gestures Gestures
+
+libinput supports basic gestures on touchpads and other indirect input
+devices. Two types of gestures are supported: @ref gestures_pinch and @ref
+gestures_swipe. Support for gestures depends on the hardware device, most
+touchpads support both gestures and any device that may send gesture events
+has the @ref LIBINPUT_DEVICE_CAP_GESTURE capability set.
+
+Note that libinput **does not** support gestures on touchscreens, see
+ at ref gestures_touchscreens.
+
+ at section gestures_lifetime Lifetime of a gesture
+
+A gesture's lifetime has three distinct stages: begin, update and end, each
+with their own event types. Begin is sent when the fingers are first set
+down or libinput decides that the gesture begins. For @ref gestures_pinch
+this sets the initial scale. Any events changing properties of the gesture
+are sent as update events. On termination of the gesture, an end event is
+sent.
+
+A gesture includes the finger count (see
+libinput_event_gesture_get_finger_count()) and that finger count remains the
+same for the lifetime of a gesture. Thus, if a user puts down a fourth
+finger during a three-finger swipe gesture, libinput will end
+the three-finger gesture and, if applicable, start a four-finger swipe
+gesture. A caller may decide that those gestures are semantically identical
+and continue the two gestures as one single gesture.
+
+ at see LIBINPUT_EVENT_GESTURE_PINCH_BEGIN
+ at see LIBINPUT_EVENT_GESTURE_PINCH_UPDATE
+ at see LIBINPUT_EVENT_GESTURE_PINCH_END
+ at see LIBINPUT_EVENT_GESTURE_PINCH_BEGIN
+ at see LIBINPUT_EVENT_GESTURE_SWIPE_UPDATE
+ at see LIBINPUT_EVENT_GESTURE_SWIPE_END
+
+ at section gestures_pinch Pinch gestures
+
+Pinch gestures are executed when two or more fingers are located on the
+touchpad and are either changing the relative distance to each other
+(pinching) or are changing the relative angle (rotate). Pinch gestures may
+change both rotation and distance at the same time. For such gestures,
+libinput calculates a logical center for the gestures and provides the
+caller with the delta x/y coordinates of that center, the relative angle of
+the fingers compared to the previous event, and the absolute scale compared
+to the initial finger position.
+
+ at image html pinch-gestures.svg "The pinch and rotate gestures"
+
+The illustration above shows a basic pinch in the left image and a rotate in
+the right angle. Not shown is a movement of the logical center if the
+fingers move unevenly. Such a movement is supported by libinput, it is
+merely left out of the illustration.
+
+Note that while position and angle is relative to the previous event, the
+scale is always absolute and a multiplier of the initial finger position's
+scale.
+
+ at section gestures_swipe Swipe gestures
+
+Swipe gestures are executed when three or more fingers are moved
+synchronously in the same direction. libinput provides x and y coordinates
+in the gesture and thus allows swipe gestures in any direction, including
+the tracing of complex paths. It is up to the caller to interpret the
+gesture into an action or limit a gesture to specific directions only.
+
+ at image html swipe-gestures.svg "The swipe gestures"
+
+The illustration above shows a vertical three-finger swipe. The coordinates
+provided during the gesture are the movements of the logical center.
+
+ at section gestures_touchscreens Touchscreen gestures
+
+Touchscreen gestures are **not** interpreted by libinput. Rather, any touch
+point is passed to the caller and any interpretation of gestures is up to
+the caller or, eventually, the X or Wayland client.
+
+Interpreting gestures on a touchscreen requires context that libinput does
+not have, such as the location of windows and other virtual objects on the
+screen as well as the context of those virtual objects:
+
+ at image html touchscreen-gestures.svg "Context-sensitivity of touchscreen gestures"
+
+In this example, the finger movements are identical but in the left case
+both fingers are located within the same window, thus suggesting an attemp
+to zoom. In the right case both fingers are located on a window border,
+thus suggesting a window movement. libinput only has knowledge of the finger
+coordinates (and even then only in device coordinates, not in screen
+coordinates) and thus cannot differentiate the two.
+
+*/
diff --git a/doc/svg/pinch-gestures.svg b/doc/svg/pinch-gestures.svg
new file mode 100644
index 0000000..4dca4cf
--- /dev/null
+++ b/doc/svg/pinch-gestures.svg
@@ -0,0 +1,612 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+ xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+ width="193.91415mm"
+ height="71.032608mm"
+ viewBox="0 0 687.09741 251.69034"
+ id="svg4313"
+ version="1.1"
+ inkscape:version="0.91 r13725"
+ sodipodi:docname="pinch-gestures.svg">
+ <defs
+ id="defs4315">
+ <marker
+ inkscape:stockid="Arrow2Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker7694"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ inkscape:connector-curvature="0"
+ id="path7696"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Mend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker7562"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path7564"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.4,0,0,-0.4,-4,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Lstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4995"
+ style="fill-rule:evenodd;stroke-width:0.625;stroke-linejoin:round"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(1.1,0,0,1.1,1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker7356"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow1Mstart">
+ <path
+ transform="matrix(0.4,0,0,0.4,4,0)"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ id="path7358"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker7250"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow1Mend"
+ inkscape:collect="always">
+ <path
+ transform="matrix(-0.4,0,0,-0.4,-4,0)"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ id="path7252"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Mend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Mend"
+ style="overflow:visible"
+ inkscape:isstock="true"
+ inkscape:collect="always">
+ <path
+ id="path4986"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.4,0,0,-0.4,-4,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Send"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Send"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4992"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.2,0,0,-0.2,-1.2,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Mstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Mstart"
+ style="overflow:visible"
+ inkscape:isstock="true"
+ inkscape:collect="always">
+ <path
+ id="path4983"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(0.4,0,0,0.4,4,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Sstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Sstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5007"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(0.3,0,0,0.3,-0.69,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker6499"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lstart">
+ <path
+ transform="matrix(1.1,0,0,1.1,1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path6501"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker6261"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lend"
+ inkscape:collect="always">
+ <path
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path6263"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker5837"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5839"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker5365"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lend">
+ <path
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path5367"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Lend"
+ style="overflow:visible"
+ inkscape:isstock="true"
+ inkscape:collect="always">
+ <path
+ id="path4998"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker5291"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5293"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Lend"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4980"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Lstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4977"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ </defs>
+ <sodipodi:namedview
+ id="base"
+ pagecolor="#ffffff"
+ bordercolor="#666666"
+ borderopacity="1.0"
+ inkscape:pageopacity="0.0"
+ inkscape:pageshadow="2"
+ inkscape:zoom="0.93677625"
+ inkscape:cx="60.063165"
+ inkscape:cy="195.28138"
+ inkscape:document-units="px"
+ inkscape:current-layer="layer1"
+ showgrid="false"
+ inkscape:window-width="1920"
+ inkscape:window-height="1136"
+ inkscape:window-x="0"
+ inkscape:window-y="27"
+ inkscape:window-maximized="1"
+ fit-margin-top="0"
+ fit-margin-left="0"
+ fit-margin-right="0"
+ fit-margin-bottom="0" />
+ <metadata
+ id="metadata4318">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ <dc:title></dc:title>
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <g
+ inkscape:label="Layer 1"
+ inkscape:groupmode="layer"
+ id="layer1"
+ transform="translate(-1.110285,-124.21518)">
+ <rect
+ width="309.33386"
+ height="209.27208"
+ x="375.99207"
+ y="127.09696"
+ id="rect14688"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#b3b3b3;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:5.76355982;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate" />
+ <rect
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#b3b3b3;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:5.76355982;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="rect2858-0"
+ y="127.09696"
+ x="3.992065"
+ height="209.27208"
+ width="309.33386" />
+ <g
+ id="g3663-9-5"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,-40.638425,-251.35321)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path2820-6-6"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path2824-1-1"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path2824-7-1-4"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,87.872503,-305.95371)"
+ id="g4877">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4879"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4881"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4883"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,-40.638425,-251.35321)"
+ id="g4889">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4891"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4893"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4895"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <g
+ id="g4897"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,87.872503,-305.95371)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path4899"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path4901"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path4903"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,327.582,-251.35321)"
+ id="g4915">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4917"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4919"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4921"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <g
+ id="g4923"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,456.09293,-305.95371)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path4925"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path4927"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path4929"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ id="g4931"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,327.582,-251.35321)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path4933"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path4935"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path4937"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,456.09293,-305.95371)"
+ id="g4939">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4941"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4943"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4945"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.31833494;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
+ d="M 237.82329,186.65441 272.448,168.6762"
+ id="path4971"
+ inkscape:connector-curvature="0" />
+ <path
+ inkscape:connector-curvature="0"
+ id="path5363"
+ d="m 43.293248,279.41755 34.62471,-17.97821"
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.31833494;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-start:url(#marker6499)" />
+ <circle
+ style="opacity:0.92000002;fill:#ffdd55;fill-opacity:0.07734806;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+ id="path6880"
+ cx="158.49547"
+ cy="227.65926"
+ r="5.3374538" />
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.97016698px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-start:url(#marker7356);marker-end:url(#marker7250)"
+ d="M 88.03522,236.61109 213.47708,179.47406"
+ id="path6882"
+ inkscape:connector-curvature="0" />
+ <path
+ inkscape:connector-curvature="0"
+ id="path6884"
+ d="M 25.998133,239.56832 257.65533,138.66416"
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:0.97016698px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-start:url(#Arrow1Mstart);marker-end:url(#Arrow1Mend)"
+ sodipodi:nodetypes="cc" />
+ <text
+ xml:space="preserve"
+ style="font-style:normal;font-weight:normal;font-size:12.50000095px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ x="139.81439"
+ y="246.73911"
+ id="text6886"
+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ id="tspan6888"
+ x="139.81439"
+ y="246.73911">logical</tspan><tspan
+ sodipodi:role="line"
+ x="139.81439"
+ y="262.36411"
+ id="tspan6890">center</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-style:normal;font-weight:normal;font-size:12.50000095px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ x="-0.65095264"
+ y="247.5675"
+ id="text6892"
+ sodipodi:linespacing="125%"
+ transform="matrix(0.90931568,-0.41610697,0.41610692,0.90931568,0,0)"><tspan
+ sodipodi:role="line"
+ id="tspan6894"
+ x="-0.65095264"
+ y="247.5675">initial scale (1.0)</tspan></text>
+ <text
+ transform="matrix(0.90931568,-0.41610697,0.41610692,0.90931568,0,0)"
+ sodipodi:linespacing="125%"
+ id="text6896"
+ y="225.43965"
+ x="-16.939013"
+ style="font-style:normal;font-weight:normal;font-size:12.50000095px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ xml:space="preserve"><tspan
+ y="225.43965"
+ x="-16.939013"
+ id="tspan6898"
+ sodipodi:role="line">current scale (> 1.0)</tspan></text>
+ <circle
+ r="5.3374538"
+ cy="226.45061"
+ cx="529.7337"
+ id="circle7474"
+ style="opacity:0.92000002;fill:#ffdd55;fill-opacity:0.07734806;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+ <text
+ sodipodi:linespacing="125%"
+ id="text7476"
+ y="245.53046"
+ x="511.05258"
+ style="font-style:normal;font-weight:normal;font-size:12.50000095px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ xml:space="preserve"><tspan
+ y="245.53046"
+ x="511.05258"
+ id="tspan7478"
+ sodipodi:role="line">logical</tspan><tspan
+ id="tspan7480"
+ y="261.15546"
+ x="511.05258"
+ sodipodi:role="line">center</tspan></text>
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker6261)"
+ d="m 470.41432,259.01526 c 18.14735,33.09222 51.23956,27.22102 51.23956,27.22102"
+ id="path7554"
+ inkscape:connector-curvature="0" />
+ <path
+ inkscape:connector-curvature="0"
+ id="path7692"
+ d="M 592.09959,192.40501 C 567.10018,164.13044 536.11794,177.15603 536.11794,177.15603"
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker7694)" />
+ <path
+ style="fill:#ff0000;fill-rule:evenodd;stroke:#dd0000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ d="M 469.81386,258.48153 636.94289,169.34604"
+ id="path9270"
+ inkscape:connector-curvature="0"
+ sodipodi:nodetypes="cc" />
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#ff0000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ d="M 540.33497,130.38263 523.25512,286.23628"
+ id="path9272"
+ inkscape:connector-curvature="0"
+ sodipodi:nodetypes="cc" />
+ <text
+ xml:space="preserve"
+ style="font-style:normal;font-weight:normal;font-size:12.5px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ x="575.56219"
+ y="156.53615"
+ id="text9274"
+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ id="tspan9276"
+ x="575.56219"
+ y="156.53615">delta</tspan><tspan
+ sodipodi:role="line"
+ x="575.56219"
+ y="172.16115"
+ id="tspan9278">angle</tspan></text>
+ </g>
+</svg>
diff --git a/doc/svg/swipe-gestures.svg b/doc/svg/swipe-gestures.svg
new file mode 100644
index 0000000..a88f646
--- /dev/null
+++ b/doc/svg/swipe-gestures.svg
@@ -0,0 +1,512 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+ xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+ width="88.927498mm"
+ height="77.985535mm"
+ viewBox="0 0 315.09744 276.3267"
+ id="svg4313"
+ version="1.1"
+ inkscape:version="0.91 r13725"
+ sodipodi:docname="swipe-gestures.svg">
+ <defs
+ id="defs4315">
+ <marker
+ inkscape:stockid="Arrow2Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker13223"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path13225"
+ style="fill:#fb0000;fill-opacity:1;fill-rule:evenodd;stroke:#fb0000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker11669"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path11671"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker11171"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lend"
+ inkscape:collect="always">
+ <path
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path11173"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Lstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4995"
+ style="fill-rule:evenodd;stroke-width:0.625;stroke-linejoin:round"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(1.1,0,0,1.1,1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker10193"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lstart">
+ <path
+ inkscape:connector-curvature="0"
+ transform="matrix(1.1,0,0,1.1,1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path10195" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Lend"
+ style="overflow:visible"
+ inkscape:isstock="true"
+ inkscape:collect="always">
+ <path
+ id="path4998"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Mend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Mend"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4986"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt"
+ transform="matrix(-0.4,0,0,-0.4,-4,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Mstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Mstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4983"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt"
+ transform="matrix(0.4,0,0,0.4,4,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker7694"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ inkscape:connector-curvature="0"
+ id="path7696"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Mend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker7562"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path7564"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.4,0,0,-0.4,-4,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker7356"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow1Mstart">
+ <path
+ transform="matrix(0.4,0,0,0.4,4,0)"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ id="path7358"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Send"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Send"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4992"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.2,0,0,-0.2,-1.2,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Sstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Sstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5007"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(0.3,0,0,0.3,-0.69,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker6499"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lstart">
+ <path
+ transform="matrix(1.1,0,0,1.1,1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path6501"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker5837"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5839"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker5365"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lend">
+ <path
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path5367"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker5291"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5293"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Lend"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4980"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Lstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4977"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ refX="0"
+ refY="0"
+ orient="auto"
+ id="Arrow1Lstart-5"
+ style="overflow:visible">
+ <path
+ inkscape:connector-curvature="0"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ id="path3707"
+ style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;marker-start:none" />
+ </marker>
+ <marker
+ refX="0"
+ refY="0"
+ orient="auto"
+ id="Arrow1Lend-9"
+ style="overflow:visible">
+ <path
+ inkscape:connector-curvature="0"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ id="path3710"
+ style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;marker-start:none" />
+ </marker>
+ <marker
+ refX="0"
+ refY="0"
+ orient="auto"
+ id="Arrow1Lstart-7"
+ style="overflow:visible">
+ <path
+ inkscape:connector-curvature="0"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ id="path3707-7"
+ style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;marker-start:none" />
+ </marker>
+ <marker
+ refX="0"
+ refY="0"
+ orient="auto"
+ id="Arrow1Lend-7"
+ style="overflow:visible">
+ <path
+ inkscape:connector-curvature="0"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ id="path3710-9"
+ style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;marker-start:none" />
+ </marker>
+ </defs>
+ <sodipodi:namedview
+ id="base"
+ pagecolor="#ffffff"
+ bordercolor="#666666"
+ borderopacity="1.0"
+ inkscape:pageopacity="0.0"
+ inkscape:pageshadow="2"
+ inkscape:zoom="1.3248017"
+ inkscape:cx="390.51795"
+ inkscape:cy="169.53168"
+ inkscape:document-units="px"
+ inkscape:current-layer="layer1"
+ showgrid="false"
+ inkscape:window-width="1920"
+ inkscape:window-height="1136"
+ inkscape:window-x="0"
+ inkscape:window-y="27"
+ inkscape:window-maximized="1"
+ fit-margin-top="0"
+ fit-margin-left="0"
+ fit-margin-right="0"
+ fit-margin-bottom="0" />
+ <metadata
+ id="metadata4318">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ <dc:title></dc:title>
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <g
+ inkscape:label="Layer 1"
+ inkscape:groupmode="layer"
+ id="layer1"
+ transform="translate(-6.8742073,-88.520861)">
+ <rect
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#b3b3b3;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:5.76355982;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="rect2858-0"
+ y="91.402641"
+ x="9.7559872"
+ height="209.27208"
+ width="309.33386" />
+ <g
+ id="g3663-9-5"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,-24.296656,-262.41117)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path2820-6-6"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path2824-1-1"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path2824-7-1-4"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,18.050732,-296.51834)"
+ id="g9299">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path9301"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path9303"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path9305"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <g
+ id="g4897"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,70.021073,-291.1216)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path4899"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path4901"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path4903"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <circle
+ style="opacity:0.92000002;fill:#ffdd55;fill-opacity:0.07734806;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+ id="path6880"
+ cx="158.49547"
+ cy="227.65924"
+ r="5.3374538" />
+ <text
+ xml:space="preserve"
+ style="font-style:normal;font-weight:normal;font-size:12.50000095px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ x="157.93031"
+ y="147.10155"
+ id="text6886"
+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ id="tspan6888"
+ x="157.93031"
+ y="147.10155">logical</tspan><tspan
+ sodipodi:role="line"
+ x="157.93031"
+ y="162.72655"
+ id="tspan6890">center</tspan></text>
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
+ d="m 110.34988,168.32728 0,55.85742"
+ id="path11149"
+ inkscape:connector-curvature="0" />
+ <path
+ inkscape:connector-curvature="0"
+ id="path11169"
+ d="m 152.62036,133.6051 0,55.85742"
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker11171)" />
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker11669)"
+ d="m 206.21329,138.13408 0,55.85742"
+ id="path11667"
+ inkscape:connector-curvature="0" />
+ <circle
+ r="5.3374538"
+ cy="173.65924"
+ cx="158.49547"
+ id="circle13213"
+ style="opacity:0.92000002;fill:#ffdd55;fill-opacity:0.07734806;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#fb0000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker13223);stroke-miterlimit:4;stroke-dasharray:4,1;stroke-dashoffset:0"
+ d="m 158.659,172.10143 0,55.85742"
+ id="path13221"
+ inkscape:connector-curvature="0" />
+ </g>
+</svg>
diff --git a/doc/svg/touchscreen-gestures.svg b/doc/svg/touchscreen-gestures.svg
new file mode 100644
index 0000000..8452c7e
--- /dev/null
+++ b/doc/svg/touchscreen-gestures.svg
@@ -0,0 +1,440 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+ xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+ width="198.41673mm"
+ height="68.753075mm"
+ viewBox="0 0 703.05143 243.61326"
+ id="svg4313"
+ version="1.1"
+ inkscape:version="0.91 r13725"
+ sodipodi:docname="touchscreen-gestures.svg">
+ <defs
+ id="defs4315">
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker6499"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lstart">
+ <path
+ transform="matrix(1.1,0,0,1.1,1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path6501"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker6261"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lend">
+ <path
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path6263"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Lstart"
+ style="overflow:visible"
+ inkscape:isstock="true"
+ inkscape:collect="always">
+ <path
+ id="path4995"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(1.1,0,0,1.1,1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker5837"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5839"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker5365"
+ refX="0"
+ refY="0"
+ orient="auto"
+ inkscape:stockid="Arrow2Lend">
+ <path
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ id="path5367"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow2Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow2Lend"
+ style="overflow:visible"
+ inkscape:isstock="true"
+ inkscape:collect="always">
+ <path
+ id="path4998"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:0.625;stroke-linejoin:round;stroke-opacity:1"
+ d="M 8.7185878,4.0337352 -2.2072895,0.01601326 8.7185884,-4.0017078 c -1.7454984,2.3720609 -1.7354408,5.6174519 -6e-7,8.035443 z"
+ transform="matrix(-1.1,0,0,-1.1,-1.1,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="marker5291"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path5293"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lend"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Lend"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4980"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(-0.8,0,0,-0.8,-10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:stockid="Arrow1Lstart"
+ orient="auto"
+ refY="0"
+ refX="0"
+ id="Arrow1Lstart"
+ style="overflow:visible"
+ inkscape:isstock="true">
+ <path
+ id="path4977"
+ d="M 0,0 5,-5 -12.5,0 5,5 0,0 Z"
+ style="fill:#000000;fill-opacity:1;fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1"
+ transform="matrix(0.8,0,0,0.8,10,0)"
+ inkscape:connector-curvature="0" />
+ </marker>
+ </defs>
+ <sodipodi:namedview
+ id="base"
+ pagecolor="#ffffff"
+ bordercolor="#666666"
+ borderopacity="1.0"
+ inkscape:pageopacity="0.0"
+ inkscape:pageshadow="2"
+ inkscape:zoom="0.93677625"
+ inkscape:cx="610.35826"
+ inkscape:cy="81.237892"
+ inkscape:document-units="px"
+ inkscape:current-layer="layer1"
+ showgrid="false"
+ inkscape:window-width="1920"
+ inkscape:window-height="1136"
+ inkscape:window-x="0"
+ inkscape:window-y="27"
+ inkscape:window-maximized="1"
+ fit-margin-top="0"
+ fit-margin-left="0"
+ fit-margin-right="0"
+ fit-margin-bottom="0" />
+ <metadata
+ id="metadata4318">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ <dc:title></dc:title>
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <g
+ inkscape:label="Layer 1"
+ inkscape:groupmode="layer"
+ id="layer1"
+ transform="translate(-21.856644,-132.29226)">
+ <rect
+ style="opacity:0.92000002;fill:#000000;fill-opacity:0.07734806;stroke:#000000;stroke-width:1.22726846;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+ id="rect4905"
+ width="333.6037"
+ height="240.70985"
+ x="22.470278"
+ y="132.9059" />
+ <g
+ id="g4885"
+ style="fill:#ffeeaa"
+ transform="matrix(0.65916749,0,0,0.65916749,7.4494548,128.12082)">
+ <rect
+ y="53.624214"
+ x="49.833439"
+ height="221.76169"
+ width="360.3331"
+ id="rect4873"
+ style="opacity:0.92000002;fill:#ffeeaa;fill-opacity:0.2983426;stroke:#000000;stroke-width:0.66787815;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+ <rect
+ style="opacity:0.92000002;fill:#ffeeaa;fill-opacity:0.2983426;stroke:#000000;stroke-width:0.70335335;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+ id="rect4875"
+ width="360.29761"
+ height="245.96988"
+ x="49.851177"
+ y="29.398293" />
+ </g>
+ <g
+ id="g3663-9-5"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,-40.638425,-251.35321)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path2820-6-6"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path2824-1-1"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path2824-7-1-4"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,87.872503,-305.95371)"
+ id="g4877">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4879"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4881"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4883"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,-40.638425,-251.35321)"
+ id="g4889">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4891"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4893"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4895"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <g
+ id="g4897"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,87.872503,-305.95371)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path4899"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path4901"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path4903"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <rect
+ y="132.9059"
+ x="390.6907"
+ height="240.70985"
+ width="333.6037"
+ id="rect4907"
+ style="opacity:0.92000002;fill:#000000;fill-opacity:0.07734806;stroke:#000000;stroke-width:1.22726846;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+ <g
+ id="g4951"
+ transform="matrix(0.65916749,0,0,0.65916749,136.45794,-94.79591)">
+ <rect
+ style="opacity:0.92000002;fill:#ffeeaa;fill-opacity:0.2983426;stroke:#000000;stroke-width:0.39509788;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+ id="rect4911"
+ width="240.39772"
+ height="116.3256"
+ x="390.11847"
+ y="546.44226" />
+ <rect
+ y="522.21863"
+ x="390.13852"
+ height="141.18213"
+ width="240.35757"
+ id="rect4913"
+ style="opacity:0.92000002;fill:#ffeeaa;fill-opacity:0.2983426;stroke:#000000;stroke-width:0.43523186;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,327.582,-251.35321)"
+ id="g4915">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4917"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4919"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4921"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <g
+ id="g4923"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,456.09293,-305.95371)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path4925"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path4927"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path4929"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ id="g4931"
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,327.582,-251.35321)">
+ <path
+ inkscape:connector-curvature="0"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ id="path4933"
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ id="path4935"
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z" />
+ <path
+ inkscape:connector-curvature="0"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ id="path4937"
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z" />
+ </g>
+ <g
+ id="g4955"
+ transform="matrix(0.65916749,0,0,0.65916749,296.60088,-154.71595)">
+ <rect
+ y="546.44226"
+ x="390.11847"
+ height="116.3256"
+ width="240.39772"
+ id="rect4957"
+ style="opacity:0.92000002;fill:#ffeeaa;fill-opacity:0.2983426;stroke:#000000;stroke-width:0.39509788;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
+ <rect
+ style="opacity:0.92000002;fill:#ffeeaa;fill-opacity:0.2983426;stroke:#000000;stroke-width:0.43523186;stroke-linecap:round;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
+ id="rect4959"
+ width="240.35757"
+ height="141.18213"
+ x="390.13852"
+ y="522.21863" />
+ </g>
+ <g
+ transform="matrix(0.64805599,0.12052062,-0.12052062,0.64805599,456.09293,-305.95371)"
+ id="g4939">
+ <path
+ d="m 388.57143,893.79076 -57.14285,-130 c 0,0 -30.0247,-58.84827 4.28571,-70.00001 27.07438,-8.79984 37.32196,9.59496 40,14.64286 27.54455,51.91936 84.64285,173.21429 84.64285,173.21429 l -0.71428,0 -71.07143,12.14286 z"
+ id="path4941"
+ style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 360.32021,827.78041 c -15.74169,-35.7991 -29.44655,-66.92657 -30.45523,-69.17214 -7.08929,-15.78239 -10.8761,-32.88254 -9.6176,-43.43026 1.39575,-11.69796 7.19746,-18.50389 18.22574,-21.38044 5.18218,-1.35169 8.54724,-1.76827 12.41155,-1.53649 4.43642,0.26609 6.95929,0.93715 11.03011,2.93391 3.93491,1.9301 8.0085,5.56248 10.68932,9.53159 3.68818,5.46055 26.56068,50.9623 49.57778,98.62829 16.60192,34.38082 37.06388,77.41994 36.89013,77.59369 -0.13286,0.13286 -69.01932,11.92114 -69.66286,11.92114 -0.27909,0 -12.00972,-26.24842 -29.08894,-65.08929 z"
+ id="path4943"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;fill:#ffccaa;fill-opacity:1;fill-rule:nonzero;stroke:#000000;stroke-width:0.002;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ <path
+ d="m 334.75785,756.75053 c -7.08929,-15.78239 -10.28437,-26.89033 -9.02587,-37.43805 1.39575,-11.69796 5.8085,-16.73613 16.83678,-19.61268 12.44766,-3.59459 20.03902,-1.91353 27.39013,8.75815 11.42622,25.66382 13.40166,29.05484 15.06365,35.48866 -0.13286,0.13286 -42.89663,15.49027 -44.57776,16.18518 -1.72922,0.71479 -4.94789,-2.09377 -5.68693,-3.38126 z"
+ id="path4945"
+ style="color:#000000;display:inline;overflow:visible;visibility:visible;opacity:0.92000002;fill:#ffe6d5;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.2;marker:none;enable-background:accumulate"
+ inkscape:connector-curvature="0" />
+ </g>
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.31833494;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
+ d="m 113.99435,244.83266 34.62471,-17.97821"
+ id="path4971"
+ inkscape:connector-curvature="0" />
+ <path
+ inkscape:connector-curvature="0"
+ id="path5363"
+ d="m 173.52713,216.96933 34.62471,-17.97821"
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.31833494;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-start:url(#marker6499)" />
+ <path
+ inkscape:connector-curvature="0"
+ id="path6257"
+ d="m 481.80981,244.83266 34.62471,-17.97821"
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.31833494;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-end:url(#marker6261)" />
+ <path
+ style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1.31833494;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1;marker-start:url(#Arrow2Lstart)"
+ d="M 541.34259,216.96933 575.9673,198.99112"
+ id="path6259"
+ inkscape:connector-curvature="0" />
+ </g>
+</svg>
diff --git a/src/libinput.h b/src/libinput.h
index d23f8fd..3595fd1 100644
--- a/src/libinput.h
+++ b/src/libinput.h
@@ -955,6 +955,8 @@ libinput_event_touch_get_base_event(struct libinput_event_touch *event);
* LIBINPUT_EVENT_GESTURE_FOO_UPDATE type until a
* LIBINPUT_EVENT_GESTURE_FOO_END is generated which signals the end of the
* gesture.
+ *
+ * See @ref gestures for more information on gesture handling.
*/
/**
--
2.4.3
More information about the wayland-devel
mailing list