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Clip-Drag: investigate the problem...

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Can we build a simple feature to allow dragging clips in the timeline display?

Well... not really, at least not "simple".
As it turns out, the GTK-framework only supports classic "drag-n-drop",
which translates into sending an action to a drag target to receive a "document".

And, even worse, dragging clips must be implemented as a UI gesture,
and as such overlaps with the other gestures for editing, trimming.

In 2017, I did an comprehensive analysis of this problem, and then
concluded to postpone it. Thus the task now would be to build a
*simplified preview*, while being aware of the danger of creating
oversimplified structures, and the danger to hamper a complete
solution for implementing UI gestures...
This commit is contained in:
Fischlurch 2021-02-21 15:40:08 +01:00
parent ab718ed6aa
commit 7e946fa1cc
1 changed files with 110 additions and 6 deletions
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wiki/thinkPad.ichthyo.mm
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@ -5331,6 +5331,7 @@
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@ -31542,6 +31543,78 @@
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<head>
</head>
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<p>
und das zu allem &#220;berflu&#223; auch noch ziemlich hart verdrahtet. Man kann nicht einmal frei &#252;ber die Modifier-Keys verf&#252;gen
</p>
</body>
</html></richcontent>
</node>
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</head>
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<p>
<u>Achtung</u>: <i><font color="#402160">abstrakter Entwurf war Ende 2017 in eine Sackgasse geraten....</font></i>
</p>
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@ -31776,7 +31849,7 @@
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<node COLOR="#435e98" CREATED="1541545933006" FOLDED="true" ID="ID_1850412206" MODIFIED="1561827465322" TEXT="Duplikate sind ein t&#xfc;ckisches Problem">
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@ -36549,7 +36622,7 @@
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@ -36965,18 +37038,20 @@
</node>
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@ -36995,6 +37070,7 @@
</ul>
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@ -37080,6 +37156,30 @@
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<u><font size="2">(Anmerkung 2/2021)</font></u>
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<p>
&#220;ber dieses Thema, und &#187;InteractionControl&#171; im Allgemeinen habe ich intensiv nachgedacht &#252;ber den Sommer 2017. Die damals aufgestellten Grundz&#252;ge erscheinen mir auch heute noch sinnvoll. Allerdings kann dieser Entwurf nicht nur allein aus first principles abgeleitet werden. Daher habe ich im Winter 2017/18 dann entschieden, eine Verkopplung mit dem direkten Aufruf von Commands aufzul&#246;sen, wodurch Letztere einfach implementiert werden konnte. &#220;berhaupt mu&#223; das UI ein gutes St&#252;ck weiter erst konkret gebaut werden, damit &#252;berhaupt ein Sachbezug f&#252;r die &#220;berlegungen gewonnen werden kann....
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@ -37458,6 +37558,7 @@
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