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DisplayEvaluation: draft interfaces

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Fischlurch 2020-03-05 20:52:55 +01:00
parent 44a56624b2
commit 1ea32c36a1
8 changed files with 466 additions and 48 deletions
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22
src/stage/timeline/body-canvas-widget.cpp
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@ -23,6 +23,20 @@
/** @file body-canvas-widget.cpp
** Implementation details of timeline custom drawing.
** This translation unit holds the central part of the timeline custom drawing code.
** While the timeline::TimelineCanvas implementation functions (bottom part of the source)
** govern the high-level invocation control structure and [entry point](}ref TimelineCancas::on_draw()),
** the actual drawing is performed by the implementation code within timeline::BodyCanvasWidget,
** which in turn delegates to the actual drawing mechanism -- implemented in the local namespace
** at the top of this file. The actual drawing is decomposed into some building blocks, like
** drawing a background, drawing an inset slope etc. These blocks are activated with the help
** of the timeline::TrackProfile, which in fact enacts a _visitor_ (double-dispatch) mechanism.
** The actual _track profile_ is a sequence of _verbs_ describing the structure of a vertical
** cross-section over the track space; it is assembled at runtime within the function
** timeline::TrackBody::establishTrackSpace(), based on specifications drawn from the real
** CSS layout definitions. Here, within this translation unit, we define the corresponding
** timeline::ProfileInterpreter implementations; these are the concrete visitors and are
** invoked repeatedly to carry out the actual drawing requests.
**
** @todo WIP-WIP-WIP as of 6/2019
**
@ -145,9 +159,9 @@ namespace timeline {
* the nested widget structure; this results in a sequence of drawing
* "verbs", which we call the \ref TrackProfile. This class here
* implements a \ref ProfileInterpreter, which is a double-dispatch
* mechanism to call a set of (virtual) drawing primitives, the
* mechanism to invoke a set of (virtual) drawing primitives, the
* actual drawing code is in the two following subclasses,
* for the background and for drawing overlays.
* separate for the background and for drawing overlays.
*/
class AbstractTrackRenderer
: public ProfileInterpreter
@ -501,8 +515,8 @@ namespace timeline {
* After the (recent) [display evaluation pass](\ref DisplayManager::triggerDisplayEvaluation() )
* has negotiated the required space for the currently presented content, this function adjusts
* the actual Gtk::Layout canvas extension to match. Note that we use two Gtk::Layout controls,
* one to show the always visible overview rules, while the second one is placed into a scrollable
* pane to accommodate an arbitrary number of tracks
* one to show the overview rules always visible at the top, while the second one is placed
* into a scrollable pane to accommodate an arbitrary number of tracks.
*/
void
BodyCanvasWidget::adjustCanvasSize(int canvasWidth, int contentHeight, int rulerHeight)

8
src/stage/timeline/body-canvas-widget.hpp
View file

@ -166,10 +166,6 @@ namespace timeline {
return contentArea_.get_vadjustment();
}
/** a way to get and possibly (re)compute the current TrackProfile */
using ProfileGetter = std::function<TrackProfile&()>;
ProfileGetter getProfile;
protected: /* ==== Interface: ViewHook ===== */
void hook (Gtk::Widget&, int xPos=0, int yPos=0) override;
@ -179,6 +175,10 @@ namespace timeline {
private:/* ===== Internals ===== */
/** a way to get and possibly (re)compute the current TrackProfile */
using ProfileGetter = std::function<TrackProfile&()>;
ProfileGetter getProfile;
TimelineCanvas& getCanvas(int yPos);
void slotStructureChange() noexcept;
void maybeRebuildLayout();

81
src/stage/timeline/display-evaluation.cpp Normal file
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@ -0,0 +1,81 @@
/*
DisplayEvaluation - recursive interwoven timeline layout allocation
Copyright (C) Lumiera.org
2020, Hermann Vosseler <Ichthyostega@web.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* *****************************************************/
/** @file display-evaluation.cpp
** Implementation details of collaborative and global timeline display allocation.
**
** @todo WIP-WIP-WIP as of 3/2020
**
*/
#include "stage/gtk-base.hpp"
#include "stage/timeline/display-evaluation.hpp"
//#include "gui/ui-bus.hpp"
//#include "lib/format-string.hpp"
//#include "lib/format-cout.hpp"
//#include "lib/util.hpp"
//#include <algorithm>
//#include <vector>
//using util::_Fmt;
//using util::contains;
//using Gtk::Widget;
//using sigc::mem_fun;
//using sigc::ptr_fun;
//using std::cout;
//using std::endl;
namespace stage {
namespace timeline {
//DisplayEvaluation::~DisplayEvaluation() { } // emit VTables here.... /////////TICKET #1211 : not sure if we get a VTable at all....
//DisplayManager::DisplayManager()
// : paneSplitPosition_{topLevelContainer.property_position()}
// , bodyCanvas_{}
// , headerPane_{bodyCanvas_.get_vadjustment()} // wire the header pane (Gtk::Viewport) to follow the body vertical scroll movement
// {
// topLevelContainer.add1 (headerPane_);
// topLevelContainer.add2 (bodyCanvas_);
// }
/**
* This function is
*/
}}// namespace stage::timeline

133
src/stage/timeline/display-evaluation.hpp Normal file
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@ -0,0 +1,133 @@
/*
DISPLAY-EVALUATION.hpp - recursive interwoven timeline layout allocation
Copyright (C) Lumiera.org
2020, Hermann Vosseler <Ichthyostega@web.de>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/** @file display-evaluation.hpp
** A collaboration to establish a globally coherent timeline display layout.
** Whenever the layout of timeline contents has to be (re)established, a recursive
** evaluation pass is triggered, which in fact is a tree walk. As a foundation, we assume
** that GTK has provided each of the actual widgets with a screen space allocation sufficient
** to render the content known thus far. At this point, we need to traverse the whole timeline
** structure, collect size and allocation information and create additional screen space requests
** if necessary. Generally speaking, this recursive process can not be entirely successful at first
** pass; typically additional space requirements are discovered and propagated _as message_ to GTK,
** and so the DisplayEvaluation can be expected to be re-triggered soon thereafter.
**
** ## Tasks to perform
**
** The basic goal is to establish a coherent vertical space allocation for all tracks within the
** timeline (while, to the contrary, the horizontal extension is a fixed requirement and can be
** derived from the covered time span as translated by a zoom factor). This can be achieved by
** - collecting the vertical content extension within each track individually
** - buildup of a timeline::TrackProfile to accommodate those requirements and all decorations
** - adjustment of the TrackHeadWidget extensions to match the allocated track body space precisely.
**
** ## Evaluation structure
**
** This is an intricate collaboration of closely related elements; however, each of the aforementioned
** tasks is defined such as to operate in a self-confined way on some part of the timeline. All the
** collaborating elements implement a common invocation interface timeline::LayoutElement, which allows
** to pass on the DisplayEvaluation itself by reference, recursively. To make the overall process work,
** moreover we establish a *Requirement* to pass on this invocation _strictly in layout order_ -- which
** implies a recursive depth-first invocation proceeding *top-down* and *from left to right*. It is
** each LayoutElement's liability to recurse appropriately to make this happen.
**
** ## Evaluation state and phases
**
** The DisplayEvaluation works both by direct (side)effect within the invoked elements, and by collecting
** [resizing requests](\ref ReSizeRequest) for asynchronous dispatch. Thus the data and state within the
** evaluation record itself is also used to control the successive phases of the evaluation. The evaluation
** is triggered repeatedly, until the layout is _globally balanced_ and no further resizing requests emerge.
**
** @todo WIP-WIP-WIP as of 3/2020
**
*/
#ifndef STAGE_TIMELINE_DISPLAY_EVALUATION_H
#define STAGE_TIMELINE_DISPLAY_EVALUATION_H
#include "lib/error.hpp"
#include "lib/nocopy.hpp"
//#include "lib/util.hpp"
//#include <sigc++/signal.h>
namespace stage {
namespace timeline {
//using util::max;
//using model::ViewHooked;
//class TrackHeadWidget;
//class TrackBody;
template<class WID>
class DisplayEvaluation;
/** @todo WIP-WIP as of 3/2020 */
template<class WID>
class LayoutElement
{
public:
using SubKey = WID*;
virtual ~LayoutElement(); ///< this is an interface
virtual void establishLaylut (DisplayEvaluation<WID>&) =0;
virtual void doResize (SubKey elm, int newSize) =0;
};
/**
* Visitor and state holder for a collaborative layout adjustment pass.
* @todo WIP-WIP as of 3/2020
*/
template<class WID>
class DisplayEvaluation
: util::NonCopyable
{
// DisplayEvaluation();
public:
using SubKey = WID*;
virtual ~DisplayEvaluation() { }; ///< this is an interface
/** */
virtual void perform() =0;
/** schedule to resize the indicated sub-element */
virtual void planResize (SubKey elm, int newSize) =0;
private:/* ===== Internals ===== */
};
}}// namespace stage::timeline
#endif /*STAGE_TIMELINE_DISPLAY_EVALUATION_H*/

2
src/stage/timeline/display-manager.cpp
View file

@ -24,8 +24,8 @@
/** @file display-manager.cpp
** Implementation details regarding timeline layout management and widget coordination.
**
** @todo WIP-WIP-WIP as of 11/2018
** @todo as of 10/2018 timeline display in the UI is rebuilt to match the architecture
** @todo 3/2020 do we actually need this global translation unit?
**
*/

17
src/stage/timeline/display-manager.hpp
View file

@ -35,18 +35,14 @@
** ## Display evaluation pass
**
** Whenever the layout of timeline contents has to be (re)established, we trigger a recursive
** evaluation pass, which in fact is a tree walk. The layout manager creates a DisplayEvaluation
** record, which is passed to the [Element's allocate function](\ref Element::allocate). The element
** in turn has the liability to walk its children and recursively initiate a nested evaluation
** by invoking DisplayEvaluation::evaluateChild(Element), which in turn calls back to
** LayoutManager::evaluate() to initiate a recursive evaluation pass. Within the recursively
** created DisplayEvaluation elements, we are able to transport and aggregate information
** necessary to give each element it' screen allocation. And this in turn allows us to
** decide upon a suitable display strategy for each individual element, within a local
** and self-contained context.
** evaluation pass, which in fact is a tree walk. The layout manager maintains a DisplayEvaluation
** record, which is passed to the involved layout elements within the timeline. Each element in turn
** has the liability to walk its children and recursively initiate a nested evaluation. During that
** pass, we are able to transport and aggregate information necessary to give each element the
** necessary amount of screen real estate.
**
** @todo WIP-WIP-WIP as of 11/2018
** @todo as of 10/2018 timeline display in the UI is rebuilt to match the architecture
** @todo WIP-WIP-WIP - drafting the DisplayEvaluation as of 3/2020
**
*/
@ -186,7 +182,6 @@ namespace timeline {
, public DisplayViewHooks
{
// TimelineLayout();
public:
virtual ~DisplayManager(); ///< this is an interface

8
wiki/renderengine.html
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@ -9195,13 +9195,15 @@ Besides building on the asset management, implementing Timeline (and Sequence) a
This topic is {{red{postponed as of 10/2018}}} &amp;rarr; [[#1083|http://issues.lumiera.org/ticket/1083]]
</pre>
</div>
<div title="TimelineDisplayManager" creator="Ichthyostega" modifier="Ichthyostega" created="201611280235" modified="201911301549" tags="spec GuiPattern img" changecount="9">
<div title="TimelineDisplayManager" creator="Ichthyostega" modifier="Ichthyostega" created="201611280235" modified="202003012347" tags="spec GuiPattern img" changecount="21">
<pre>//guide and control the concrete display properties of the various sub components (tracks, clips) comprising a timeline display.//
The TimelineDisplayManager actually is an abstraction, a control interface, revolving around the guidance individual components need in order to settle on a proper display. Those components are represented as mediating entities, the TrackPresenter and the ClipPresenter, each of which controls and manages a mostly passive GTK widget. To this end, the presenters need to know at which virtual coordinates their corresponding widgets would show up, and they need to know if these widgets need to be actually present at the moment. Also, especially the ClipPresenter needs to know which ''clip appearance style'' to choose for the corresponding slave widget.
The TimelineDisplayManager actually is an abstraction, a control interface, revolving around the guidance individual components need in order to settle on a proper display. Those components themselves are represented as mediating entities, the TrackPresenter and the ClipPresenter, each of which controls and manages a mostly passive GTK widget. To this end, the presenters need to know at which virtual coordinates their display widgets would show up, and they should be aware if these corresponding widgets need actually to be visible at the moment. Moreover, especially the ClipPresenter has to choose the appropriate &amp;rarr;[[»appearance style«|GuiClipWidget]] for the corresponding slave widget.
!display evaluation pass
[&gt;img[Clip presentation control|uml/Timeline-display-evaluation.png]]Since the timeline display is formed by several nested collections of elements, a proper display layout must incorporate information from all those parts. A naive approach likely would just iterate over them and reach in to extract data -- or even worse, build a separate display data store, which then needs to be kept in sync with the component hierarchy. Any of these naive working styles would lead to high coupling and it turns the necessary adjustment and changes into a liability, which raises due to evolution of requirements. Over time, such a dangerous situation can only be avoided altogether by admitting the collaborative nature of the task at hand. To get there, we need to distil the abstraction shared between the global and the local concerns, and we need to shape it such as to build onto some kind of invariant, allowing that abstraction to re-emerge at several levels of locality.
[&gt;img[Clip presentation control|uml/Timeline-display-evaluation.png]]Since the timeline display is formed by several nested collections of elements, a proper display layout must incorporate information from all those parts. A naive approach likely would just iterate over them and reach into their innards in order to extract the necessary data -- or even worse, build a separate display data store, which then must be //kept in sync// with the component hierarchy proper. Any of these naive coding approaches would lead to high coupling and turns later adjustments and necessary changes into a liability, due to evolution of requirements. On the long run, such a dangerous situation can only be mitigated by a collaboration of self contained local structures. And, to get there, we need to distil the common ground shared between the global and the local concerns, and reshape it into some kind of invariant -- allowing a common pattern to re-emerge at several levels of locality.
The purpose of the display evaluation pass is to make the timeline display globally coherent. Parts of our display are implemented as GTK compound widgets -- and GTK ensures a proper layout within these parts. However, our layout creates interconnections and dependencies beyond what can be expressed with GTK building blocks. Most notably, the track space must be aligned horizontally, both in header and track body display, while each individual track has to accommodate to its various content's extension. And since clips might in turn contain nested structures, we can not hope to achieve a finished layout just in one pass, since some of our local adjustments in turn need to be re-evaluated by the GTK space allocation mechanism. So we end up with several sweeping passes over our timeline control structure, each collecting data and //gradually increasing the allocated space.// This kind of //monotonous adjustment// is key for avoiding oscillations and to guarantee a quick convergence of this iterative space allocation process. Whenever one pass is finished, a collection of batched size adjustment messages is dispatched, which, after being accommodated by GTK into appropriate local layout, will in turn trigger our custom drawing code eventually -- at which point the next display evaluation pass is hooked in, continuing this cycle until convergence is achieved.
!mapping service for the widgets
Another, closely related topic, handled within this context, is the mapping from model structures and units into display layout coordinates. Within the model, we can distinguish several dimensions (degrees of freedom). For one, there is the topology, the ''location or part'' of the model to expose through the UI. Moreover, there is the ''degree of detail'' for this UI representation. And then, there is the ''temporal position and extension'' to represent.

243
wiki/thinkPad.ichthyo.mm
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@ -91,7 +91,7 @@
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<node CREATED="1582991961258" ID="ID_545649889" MODIFIED="1582991965501" TEXT="pro Track">
<node CREATED="1582991961258" FOLDED="true" ID="ID_545649889" MODIFIED="1582991965501" TEXT="pro Track">
<node CREATED="1582992016890" ID="ID_1705972913" MODIFIED="1582992030828" TEXT="Aufsammeln der vertikalen Ausdehnung"/>
<node CREATED="1582992031648" ID="ID_752229981" MODIFIED="1582992037387" TEXT="Maximum + Padding"/>
<node CREATED="1582992060135" ID="ID_446948891" MODIFIED="1582992233901">
@ -21258,6 +21258,7 @@
<node CREATED="1582993092825" ID="ID_1779309098" MODIFIED="1582993104811" TEXT="Clip und Effekt">
<node CREATED="1582993119758" ID="ID_1843431209" MODIFIED="1582993172267" TEXT="enth&#xe4;lt (voraussichtlich) komplette verschachtelte Timeline-Struktur"/>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1582993256244" ID="ID_1054753498" MODIFIED="1582993279274" TEXT="Problem: wie gehen wir mit dem Head-Bereich um?">
<linktarget COLOR="#9a5670" DESTINATION="ID_1054753498" ENDARROW="Default" ENDINCLINATION="-3030;165;" ID="Arrow_ID_948617682" SOURCE="ID_1626144230" STARTARROW="None" STARTINCLINATION="989;91;"/>
<icon BUILTIN="help"/>
<node CREATED="1582993283464" ID="ID_187092898" MODIFIED="1582993298033" TEXT="horizontale Ausdehnung ist limitiert"/>
<node CREATED="1582993311469" ID="ID_1905724855" MODIFIED="1582993324697" TEXT="L&#xf6;sungsans&#xe4;tze">
@ -21342,15 +21343,133 @@
<node CREATED="1582995644603" ID="ID_1368190539" MODIFIED="1582995658084" TEXT="im BodyCanvas ist das der Platz f&#xfc;r Sub-Tracks"/>
</node>
</node>
<node CREATED="1583103616819" ID="ID_635184052" MODIFIED="1583103674376">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
<b>Nein</b>: keine Abh&#228;ngigkeiten,
</p>
<p>
sondern Iterationen!
</p>
</body>
</html></richcontent>
<icon BUILTIN="idea"/>
<node CREATED="1583103686706" ID="ID_1021464384" MODIFIED="1583103698796" TEXT="wir n&#xe4;hern uns dem korrekten Layout inkrementell an"/>
<node CREATED="1583103711798" ID="ID_1460889946" MODIFIED="1583104046449" TEXT="daher ist die Reihenfolge des Besuchs fast egal">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
<u>Warum</u>? Weil wir immer die Hilfe von GTK brauchen, um aus unseren ver&#228;nderten Vorgaben eine Platz-Allokation zu machen. Und diese Hilfe k&#246;nnen wir nicht synchron anfordern, sondern triggern sie indirekt durch setzen neuer Mindestgr&#246;&#223;en...
</p>
<p>
<u>Warum &quot;fast&quot;</u>? weil dann der Header-Pass eben doch eine globale Information transportiert, und zwar den &#220;bertrag. Da die Auswertung aber auch hier ausf&#228;chert (&#252;ber die Header in den Clips), sollte man tats&#228;chlich versuchen, globale Datenhaltung (jenseits der Auswertungs-Phase) zu vermeiden!
</p>
</body>
</html></richcontent>
</node>
<node CREATED="1583104061758" ID="ID_970866414" MODIFIED="1583104078795" TEXT="&quot;fast&quot; vermeiden, indem man rekursiv auswertet!">
<icon BUILTIN="yes"/>
</node>
</node>
<node CREATED="1583104117487" ID="ID_1016623445" MODIFIED="1583104131498" TEXT="Konsequenz: rekursive Auswertungs-Scopes">
<icon BUILTIN="forward"/>
<node CREATED="1583434078579" ID="ID_718475738" MODIFIED="1583434227770" TEXT="behandelt implizite Abh&#xe4;ngigkeiten">
<linktarget COLOR="#f0e0c0" DESTINATION="ID_718475738" ENDARROW="Default" ENDINCLINATION="-190;15;" ID="Arrow_ID_1507039489" SOURCE="ID_1287988941" STARTARROW="None" STARTINCLINATION="201;15;"/>
<icon BUILTIN="yes"/>
</node>
<node CREATED="1583434172775" ID="ID_1444249960" MODIFIED="1583434412688" TEXT="Aufgabe ist, dieses orthogonal darzustellen">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
Rekursion ist immer doppelb&#246;dig:
</p>
<ul>
<li>
angeblich haben wir selbst&#228;hnliche Strukturen
</li>
<li>
aber tats&#228;chlich steckt eine Absicht dahinter
</li>
</ul>
</body>
</html>
</richcontent>
</node>
<node CREATED="1583434976100" ID="ID_1359440" MODIFIED="1583435092878" TEXT="hierf&#xfc;r wird die Abfolge verpflichtend geordnet">
<arrowlink COLOR="#6f56e5" DESTINATION="ID_1485425520" ENDARROW="Default" ENDINCLINATION="250;14;" ID="Arrow_ID_832303335" STARTARROW="None" STARTINCLINATION="298;17;"/>
<icon BUILTIN="idea"/>
</node>
</node>
</node>
<node CREATED="1582995993706" HGAP="62" ID="ID_333264806" MODIFIED="1582996007182" TEXT="Aktivit&#xe4;ten" VSHIFT="8">
<node CREATED="1582996051549" ID="ID_29139061" MODIFIED="1582996201143" TEXT="Track bestimmt Maximum &#xfc;ber seinen Inhalt">
<node CREATED="1583427610013" ID="ID_1910384749" MODIFIED="1583427716087" TEXT="Teilschritte">
<node CREATED="1582996051549" ID="ID_29139061" MODIFIED="1583427655853" TEXT="Track bestimmt Maximum &#xfc;ber seinen Inhalt">
<icon BUILTIN="full-1"/>
<node CREATED="1582996202265" ID="ID_218499874" MODIFIED="1582996202265" TEXT="(Clips, Effekte)"/>
<node CREATED="1582996203830" ID="ID_149464381" MODIFIED="1582996209358" TEXT="input vom zugeh&#xf6;rigen Head"/>
<node CREATED="1582996562758" ID="ID_1180945302" MODIFIED="1582996602940" TEXT="Ergebnis wird in contentHeight_ abgelegt"/>
</node>
<node CREATED="1582996608127" ID="ID_92521449" MODIFIED="1582996700175" TEXT="Canvas evaluation: TrackBody::establishTrackSpace"/>
<node CREATED="1582996722829" ID="ID_842289587" MODIFIED="1583009048676" TEXT="Head-Ausgleichs-Pass"/>
<node CREATED="1582996608127" ID="ID_92521449" MODIFIED="1583427660810" TEXT="Canvas evaluation: TrackBody::establishTrackSpace">
<icon BUILTIN="full-2"/>
</node>
<node CREATED="1582996722829" ID="ID_842289587" MODIFIED="1583427701893" TEXT="Head-Ausgleichs-Pass">
<icon BUILTIN="full-3"/>
</node>
</node>
<node CREATED="1583427622167" ID="ID_1142872612" MODIFIED="1583427625373" TEXT="Zusammenhang">
<node CREATED="1583427626479" ID="ID_954689662" MODIFIED="1583427635727" TEXT="jeder Teil ist in-sich geschlossen"/>
<node CREATED="1583427636950" ID="ID_1936738462" MODIFIED="1583427650200" TEXT="mu&#xdf; aber in sinnvoller Reihenfolge laufen">
<node CREATED="1583433528741" ID="ID_1966240809" MODIFIED="1583433550809" TEXT="Problem dabei: Aysmmetrie">
<icon BUILTIN="messagebox_warning"/>
</node>
<node CREATED="1583433557458" ID="ID_260365198" MODIFIED="1583433567364" TEXT="es sind nur zwei Teilsysteme, aber drei Passes"/>
<node CREATED="1583433572927" ID="ID_242969113" MODIFIED="1583433619074" TEXT="der erste und der dritte Pass braucht die DisplayFrames">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
weil wir eine Verkn&#252;pfung der Body und Header-Informationen herstellen
</p>
</body>
</html>
</richcontent>
</node>
<node CREATED="1583433986108" ID="ID_542008018" MODIFIED="1583434006913" TEXT="der dritte Pass mu&#xdf; obendrein ein Integral transportieren"/>
</node>
<node CREATED="1583434059006" ID="ID_1287988941" MODIFIED="1583434227770" TEXT="Idee: in der Rekursion verstecken">
<arrowlink COLOR="#f0e0c0" DESTINATION="ID_718475738" ENDARROW="Default" ENDINCLINATION="-190;15;" ID="Arrow_ID_1507039489" STARTARROW="None" STARTINCLINATION="201;15;"/>
<icon BUILTIN="idea"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#8d0099" CREATED="1583435024997" ID="ID_1485425520" MODIFIED="1583435263295" TEXT="Verpflichtend in Layout-Ordnung auszuwerten">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
ausnahmslos von oben nach unten und von links nach rechts!
</p>
</body>
</html>
</richcontent>
<arrowlink COLOR="#c34e8a" DESTINATION="ID_1346473468" ENDARROW="Default" ENDINCLINATION="-294;-13;" ID="Arrow_ID_1976656108" STARTARROW="None" STARTINCLINATION="-358;20;"/>
<linktarget COLOR="#6f56e5" DESTINATION="ID_1485425520" ENDARROW="Default" ENDINCLINATION="250;14;" ID="Arrow_ID_832303335" SOURCE="ID_1359440" STARTARROW="None" STARTINCLINATION="298;17;"/>
<font ITALIC="true" NAME="SansSerif" SIZE="12"/>
<icon BUILTIN="yes"/>
</node>
</node>
</node>
</node>
<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1582995698667" HGAP="165" ID="ID_1849412034" MODIFIED="1583012162492" TEXT="zu Bauen" VSHIFT="27">
@ -21372,12 +21491,33 @@
</html></richcontent>
</node>
</node>
<node CREATED="1583009002945" ID="ID_1360288962" MODIFIED="1583009011003" TEXT="Ausl&#xf6;se-Mechanismus kl&#xe4;ren"/>
<node CREATED="1583009002945" ID="ID_1360288962" MODIFIED="1583009011003" TEXT="Ausl&#xf6;se-Mechanismus kl&#xe4;ren">
<node CREATED="1583434315708" ID="ID_1757558045" MODIFIED="1583434327974" TEXT="ausl&#xf6;sbar &#xfc;ber das DisplayManager-API"/>
<node CREATED="1583435433150" ID="ID_641720015" MODIFIED="1583435453391" TEXT="der evaluation-Pass ist synchron und stateful"/>
<node CREATED="1583435417845" ID="ID_1265153119" MODIFIED="1583435463063" TEXT="und die Komponenten k&#xf6;nnen Annahmen &#xfc;ber das Resultat machen"/>
<node CREATED="1583435479472" ID="ID_1015699978" MODIFIED="1583435597100">
<richcontent TYPE="NODE"><html>
<head>
</head>
<body>
<p>
<b><u>Invariante</u></b>: <i><font size="2">(nach dem Pass)</font></i>&#160;liegen vorl&#228;ufig/hinreichend brauchbare Layout-Ma&#223;e vor
</p>
</body>
</html>
</richcontent>
<icon BUILTIN="info"/>
</node>
</node>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1582995724279" ID="ID_742111018" MODIFIED="1583010908452" TEXT="Steuer-Komponente">
<icon BUILTIN="flag-yellow"/>
<node CREATED="1582995734606" ID="ID_1813411794" MODIFIED="1582995739220" TEXT="lebt im Layout-Manager"/>
<node CREATED="1582995740053" ID="ID_521808189" MODIFIED="1582995755383" TEXT="stateful (evaluationPhase)"/>
<node CREATED="1583435618709" ID="ID_1501002443" MODIFIED="1583435629364" TEXT="es ist die DisplayEvaluation selber">
<icon BUILTIN="idea"/>
</node>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1582995826081" ID="ID_1814756232" MODIFIED="1583010909674" TEXT="Evaluation-Ctx?">
<icon BUILTIN="flag-yellow"/>
@ -21389,6 +21529,30 @@
<node CREATED="1582995943761" ID="ID_1763997736" MODIFIED="1582995951988" TEXT="wenn es nur um eine Trigger-Reihenfolge geht"/>
<node CREATED="1582995952856" ID="ID_1376470251" MODIFIED="1582995967965" TEXT="wenn stattdessen der Layout-Manager als Inteface durchgereicht wird"/>
</node>
<node CREATED="1583103170639" ID="ID_1199980563" MODIFIED="1583103203649" TEXT="k&#xf6;nnte die DisplayEvaluation selber sein">
<icon BUILTIN="idea"/>
<node CREATED="1583103181267" ID="ID_1854299076" MODIFIED="1583103191631" TEXT="diese w&#xe4;re dann auch ein Interface"/>
<node CREATED="1583103192422" ID="ID_1947518764" MODIFIED="1583103201511" TEXT="und w&#xfc;rde per Referenz durchgegeben"/>
</node>
<node CREATED="1583435165604" ID="ID_1346473468" MODIFIED="1583435263295" TEXT="&#xfc;berneme die Zusammenhangs-Struktur vom Visitor">
<linktarget COLOR="#c34e8a" DESTINATION="ID_1346473468" ENDARROW="Default" ENDINCLINATION="-294;-13;" ID="Arrow_ID_1976656108" SOURCE="ID_1485425520" STARTARROW="None" STARTINCLINATION="-358;20;"/>
<node CREATED="1583435179556" ID="ID_857623389" MODIFIED="1583435203049" TEXT="alle Komponenten bieten eine Challenge-Funktion"/>
<node CREATED="1583435204373" ID="ID_741511380" MODIFIED="1583435220824" TEXT="sie rekurieren mit Insider-Wissen auf den Visitor zur&#xfc;ck"/>
<node CREATED="1583435311207" ID="ID_146344730" MODIFIED="1583435342779" TEXT="aber die DisplayEvaluation ist selbst der Visitor">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
insofern f&#228;llt die doppelte Abstraktion und indirektion hier weg
</p>
</body>
</html>
</richcontent>
<icon BUILTIN="idea"/>
</node>
</node>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1583010104257" ID="ID_82409060" MODIFIED="1583010910968" TEXT="Evaluation-Pass">
<icon BUILTIN="flag-yellow"/>
@ -22208,11 +22372,11 @@
<icon BUILTIN="button_ok"/>
</node>
<node COLOR="#338800" CREATED="1575576971732" ID="ID_673183519" MODIFIED="1575670587273" TEXT="Mechanismus zum Umordnen">
<arrowlink COLOR="#507b9b" DESTINATION="ID_1193961919" ENDARROW="Default" ENDINCLINATION="-877;88;" ID="Arrow_ID_624713040" STARTARROW="None" STARTINCLINATION="706;62;"/>
<arrowlink COLOR="#507b9b" DESTINATION="ID_1193961919" ENDARROW="Default" ENDINCLINATION="-877;88;" ID="Arrow_ID_624713040" STARTARROW="None" STARTINCLINATION="483;9;"/>
<icon BUILTIN="button_ok"/>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576757730509" ID="ID_1816490333" MODIFIED="1582926717705" TEXT="Thema &#xbb;Widget-Position&#xab;">
<arrowlink COLOR="#605bb8" DESTINATION="ID_1949130658" ENDARROW="Default" ENDINCLINATION="204;611;" ID="Arrow_ID_993970158" STARTARROW="None" STARTINCLINATION="512;51;"/>
<arrowlink COLOR="#605bb8" DESTINATION="ID_1949130658" ENDARROW="Default" ENDINCLINATION="204;611;" ID="Arrow_ID_993970158" STARTARROW="None" STARTINCLINATION="299;12;"/>
<linktarget COLOR="#15bcc9" DESTINATION="ID_1816490333" ENDARROW="Default" ENDINCLINATION="-454;46;" ID="Arrow_ID_408864676" SOURCE="ID_1121301646" STARTARROW="None" STARTINCLINATION="-235;17;"/>
<icon BUILTIN="pencil"/>
<node COLOR="#338800" CREATED="1576758030604" HGAP="54" ID="ID_1869378616" MODIFIED="1576876023320" TEXT="entsprechende Erweiterung f&#xfc;r delegating-ViewHook notwendig" VSHIFT="26">
@ -22524,7 +22688,7 @@
</node>
</node>
<node COLOR="#338800" CREATED="1582503247986" ID="ID_1081924103" MODIFIED="1582835894937" TEXT="Problem Covarianz Clip vs Widget">
<arrowlink COLOR="#66226c" DESTINATION="ID_1439869815" ENDARROW="Default" ENDINCLINATION="-760;97;" ID="Arrow_ID_655919678" STARTARROW="None" STARTINCLINATION="1660;0;"/>
<arrowlink COLOR="#66226c" DESTINATION="ID_1439869815" ENDARROW="Default" ENDINCLINATION="-760;97;" ID="Arrow_ID_655919678" STARTARROW="None" STARTINCLINATION="1574;0;"/>
<icon BUILTIN="button_ok"/>
<node CREATED="1582503411035" HGAP="45" ID="ID_1293494572" MODIFIED="1582503470645" TEXT="der Canvas braucht nur ein Widget, wir aber konstruieren einen Clip" VSHIFT="22">
<richcontent TYPE="NOTE"><html>
@ -22602,7 +22766,7 @@
</node>
</node>
<node CREATED="1575050224708" ID="ID_1911321905" MODIFIED="1582988334867" TEXT="Trigger">
<linktarget COLOR="#6e8c9b" DESTINATION="ID_1911321905" ENDARROW="Default" ENDINCLINATION="-700;-194;" ID="Arrow_ID_528411186" SOURCE="ID_1886398385" STARTARROW="None" STARTINCLINATION="1654;175;"/>
<linktarget COLOR="#6e8c9b" DESTINATION="ID_1911321905" ENDARROW="Default" ENDINCLINATION="-733;-208;" ID="Arrow_ID_528411186" SOURCE="ID_1886398385" STARTARROW="None" STARTINCLINATION="1621;161;"/>
<icon BUILTIN="idea"/>
<node CREATED="1575050232723" ID="ID_1373278767" MODIFIED="1575050241511" TEXT="Struktur-&#xc4;nderung">
<node CREATED="1575050261439" ID="ID_1211501481" MODIFIED="1575050408505" TEXT="Sequenz der unmittelbaren Kinder ge&#xe4;ndert">
@ -27301,7 +27465,7 @@
<icon BUILTIN="messagebox_warning"/>
<node CREATED="1567689637751" ID="ID_1333933230" MODIFIED="1567689647034" TEXT="Scrollbar verschwindet nach Fokus-Verlust">
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1582988892133" ID="ID_483543888" MODIFIED="1582989024765" TEXT="#1208 automatic vertical scrollbar malfunctioning">
<linktarget COLOR="#8c6572" DESTINATION="ID_483543888" ENDARROW="Default" ENDINCLINATION="544;-34;" ID="Arrow_ID_759404699" SOURCE="ID_829958563" STARTARROW="None" STARTINCLINATION="836;57;"/>
<linktarget COLOR="#8c6572" DESTINATION="ID_483543888" ENDARROW="Default" ENDINCLINATION="544;-34;" ID="Arrow_ID_759404699" SOURCE="ID_829958563" STARTARROW="None" STARTINCLINATION="393;-27;"/>
<icon BUILTIN="flag-yellow"/>
</node>
<node CREATED="1567689657945" ID="ID_243238670" MODIFIED="1567689670071" TEXT="wird durch Gr&#xf6;&#xdf;en&#xe4;nderung wieder sichtbar"/>
@ -27496,6 +27660,35 @@
<icon BUILTIN="idea"/>
</node>
</node>
<node CREATED="1583102068949" ID="ID_1157479559" MODIFIED="1583102075826" TEXT="Probleme / Entscheidungen">
<node CREATED="1583102099206" ID="ID_1626144230" MODIFIED="1583102474759" TEXT="Umgang mit einem Clip-Header">
<richcontent TYPE="NOTE"><html>
<head>
</head>
<body>
<p>
was ist das?
</p>
<p>
Wenn ein Clip mehrere Spuren oder Datenstr&#246;me oder sonst irgend eine Art innerer Struktur tr&#228;gt, dann braucht man irgendwann einen vom Zeitpunkt unabh&#228;ngigen &#187;Kopf-Bereich&#171;, um die Struktur zu steuern und zu manipulieren. F&#252;r die Tracks gibt es daf&#252;r einen eigenen &quot;patchbay&quot;-Bereich links von der Timeline-Anzeige. Aber f&#252;r die Clips ist nicht klar
</p>
<ul>
<li>
ob wir das wirklich brauchen
</li>
<li>
wo wir es anordnen
</li>
<li>
und wie wir mit Clips umgehen, die weit &#252;ber das Anzeigefenster hinsausreichen
</li>
</ul>
</body>
</html></richcontent>
<arrowlink COLOR="#9a5670" DESTINATION="ID_1054753498" ENDARROW="Default" ENDINCLINATION="-3030;165;" ID="Arrow_ID_948617682" STARTARROW="None" STARTINCLINATION="989;91;"/>
</node>
</node>
</node>
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1480607059909" ID="ID_703281238" MODIFIED="1557498707231" TEXT="Control">
<icon BUILTIN="flag-yellow"/>
@ -28113,7 +28306,7 @@
<node CREATED="1487464489143" ID="ID_1990719718" MODIFIED="1557498707232" TEXT="noch erhalten als Bezugspunkt"/>
<node CREATED="1487464495494" ID="ID_1238357229" MODIFIED="1557498707232" TEXT="daneben neue Controller-Backbone hochziehen"/>
<node CREATED="1487464505469" ID="ID_707273464" MODIFIED="1566487594554" TEXT="Umbau in neuen top-level">
<arrowlink COLOR="#bc4930" DESTINATION="ID_1868522177" ENDARROW="Default" ENDINCLINATION="221;282;" ID="Arrow_ID_600425644" STARTARROW="None" STARTINCLINATION="1984;197;"/>
<arrowlink COLOR="#bc4930" DESTINATION="ID_1868522177" ENDARROW="Default" ENDINCLINATION="221;282;" ID="Arrow_ID_600425644" STARTARROW="None" STARTINCLINATION="1864;201;"/>
</node>
</node>
<node CREATED="1477522287316" ID="ID_1942021610" MODIFIED="1557498707232" TEXT="TimelinePanel"/>
@ -29229,7 +29422,7 @@
<node CREATED="1488423493014" ID="ID_64529473" MODIFIED="1557498707233" TEXT="Navigation"/>
<node CREATED="1488423514355" ID="ID_917891687" MODIFIED="1557498707233" TEXT="Steuerelemente">
<node CREATED="1541858529489" ID="ID_838803024" MODIFIED="1557498707233" TEXT="ZoomWindow">
<linktarget COLOR="#5b5ca1" DESTINATION="ID_838803024" ENDARROW="Default" ENDINCLINATION="-519;-1168;" ID="Arrow_ID_1674512697" SOURCE="ID_1949450244" STARTARROW="None" STARTINCLINATION="490;0;"/>
<linktarget COLOR="#5b5ca1" DESTINATION="ID_838803024" ENDARROW="Default" ENDINCLINATION="-519;-1168;" ID="Arrow_ID_1674512697" SOURCE="ID_1949450244" STARTARROW="None" STARTINCLINATION="446;0;"/>
<linktarget COLOR="#5b5ca1" DESTINATION="ID_838803024" ENDARROW="Default" ENDINCLINATION="-499;-1329;" ID="Arrow_ID_842684168" SOURCE="ID_1828075998" STARTARROW="None" STARTINCLINATION="490;0;"/>
<node BACKGROUND_COLOR="#ccb59b" COLOR="#6e2a38" CREATED="1541858541550" ID="ID_1912142591" MODIFIED="1557498707233" TEXT="generische Abstraktionskomponente">
<font ITALIC="true" NAME="SansSerif" SIZE="14"/>
@ -32554,7 +32747,7 @@
</node>
<node CREATED="1448669332204" HGAP="76" ID="ID_329609486" MODIFIED="1566955621429" TEXT="InteractionControl">
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