ElementBox: complete (base) implementation of size constrained layout
Further extended GTK code survey to clarify the role of the minimum_size, it is indeed ignored by most standard containers, but it is actually used by Gtk::Layout as starting point for the query sequence. Thus it does not make sense to treat minimum and natural size differently; both queries should be responded by returning our size constraint. Unless we define additional borders and margins in the CSS, we can be sure that GTK will base the size allocation on the exact values returned from the get_required_* functions. These functions will be invoked only from within the Event Loop and after the ctor is finished, but before the first "draw". They will be re-invoked on each "size change" event and on each focus change (since a focus change may change the style and thus the actual extension).
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95
doc/technical/code/gtk/layout.txt
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95
doc/technical/code/gtk/layout.txt
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@ -0,0 +1,95 @@
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GTK Widget Layout
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=================
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:Date: 2022
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//Menu: label layout
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.collecting insights on inner workings of the GTK Layout Engine
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GTK is a powerful framework, yet also carries along some legacy and homegrown structures,
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hidden within a huge code base. While there are excellent beginner tutorials, definitive technical
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documentation is scarce, and design decisions must be inferred from the existing code sometimes.
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Since Lumiera is on the mission of building a quite elaborate user interface -- well beyond the
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abilities of a typical office application -- we're often forced to identify possible extension
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points and or work out reliable and future proof techniques to create behaviour beyond the
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original intentions of the GTK developers.
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Allocation of Screen Space
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--------------------------
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GTK is built from ground up with the assumption of a _dynamical layout_ -- designing the UI layout
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with fixed sizes and widget placements is not seen as a viable option and only marginally supported
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as an exotic corner case. An user interface built with GTK is comprised of widgets arranged into a
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hierarchical structure, and styled by matching a corresponding structure of _layout nodes_ against
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a set of _cascading style rules_ (CSS). When a new widget is attached into this structure, it has
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to progress through several stages
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- creation / allocation
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- wiring
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- ``map'' : associate a display window (GDK window) and dedicated extension on screen
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- ``realize'' : bring all structures into workable state
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- ``draw'' : render the visuals into pixels for display
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- ``unrealize'' : remove from active interconnections
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- ``unmap'' : release the ties to the associated (GDK) window
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- ``destroy'' : detach from managers and deallocate data
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After passing through the _realize phase,_ a widget holds unto a `Allocation` -- a struct defining
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the position of the upper left corner, and its extension (width, height) in pixel coordinates. Due
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to dynamic interaction responses, a widget can be _resized,_ causing the emission of a _resize event._
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Processing this resize event within the GTK Event Loop will create and assign an _updated allocation,_
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followed by _redrawing_ the widget. GTK uses double buffering, and thus it is sufficient to draw the
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widget in its new shape, without having to clear out the old state from the display buffer.
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Allocation strategy
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~~~~~~~~~~~~~~~~~~~
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.verified with Gtk 3.24
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In GTK, as a rule, screen extension is never squeezed, but rather expanded to fit. Every widget is
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queried through a set of virtual functions (``vfunc'') to define its basic layout trend (the ``size
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request mode''), and its minimal and natural extension
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minimal:: the absolute minimum required by the widget to work properly
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natural:: the extension necessary to use the widget properly, without wasting screen estate
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size request mode::
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by implementing ´get_request_mode_vfunc()`, the widget defines how its allocation shall be treated...
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- `SIZE_REQUEST_HEIGHT_FOR_WIDTH` : start with a desired width and then accommodate the vertical extension
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- `SIZE_REQUEST_WIDTH_FOR_HEIGHT` : start with a desired height and expand horizontally as needed
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- `SIZE_REQUEST_CONSTANT_SIZE` (this seems to be there for sake of completeness, but is typically
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not treated explicitly as a distinct case in layout code; expect to fall back to the default,
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which is height-for-width)
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Starting from these requirements as defined by the widget, next the CSS definitions are accessed through
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the *CSS Gadget*, which is associated internally with each widget. This typically causes the allocation
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to be _increased_ to allow for borders, margins, padding and drop shadows. In case the widget is placed
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into a container with fill-layout, the widget may be expanded further, or margins will be created by
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shifting the pixel coordinates. From the allocation worked out thus far, all headroom necessary for
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proper drawing is then _subtracted,_ and the resulting bare allocation is passed to the widget through
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the function `gtk_widget_set_allocation()`, which also invokes the `Gtk::Widget::on_size_allocate()`
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hook. Note that the fully expanded allocation is not stored; GTK just assumes that widgets will
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draw themselves properly, including their decorations, thereby possibly using extended screen space.
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Minimal vs. natural size request
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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In short: you need to define both, while the natural size request is more relevant in most cases.
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All top level entities and most layout containers will start with the natural size. However, some
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containers initiate the with-for-height (or height-for-width) request sequence with the minimal
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extension. Most notably, the _canvas control,_ `Gtk::Layout` allocates widgets according to
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this scheme (see `gtk_layout_allocate_child()` in 'gtklayout.c').
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NOTE: judging from the code, it is recommended to implement both `get_preferred_height|width()`,
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irrespective of the layout trend. However, it is only necessary to implement the derivative
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function matching the trend, e.g. `Gtk::Widget::get_preferred_height_for_width_vfunc() in
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case of `SIZE_REQUEST_HEIGHT_FOR_WIDTH`, since the default implementation will fall back
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on `get_preferred_with()` for the other one.
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However -- in most cases (custom) widgets are assembled by arranging pre defined standard widgets
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into some layout container (Box or Grid or Tree); in those cases, the default implementation works
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out the required extension bottom-up from the building blocks, and there is no need to define
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any specific size request
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Explicit size_request
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^^^^^^^^^^^^^^^^^^^^^
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There is a set of functions `set|get_size_request()`. These seem to be a mostly obsolete leftover from
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earlier days. They are implemented by forcibly increasing the _minimal size request_ -- and since many
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standard containers today (as of 2022) work based on the natural size request rather, this information
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is not treated coherently, and sometimes leads to surprising behaviour.
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@ -23,8 +23,29 @@
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/** @file element-box-widget.cpp
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** Implementation details of the UI building block to display an ID label.
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** A special twist arises from the requirement to show the temporal extension of media,
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** leading to a display on a time calibrated canvas, where a given time span corresponds
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** to some fixed pixel count, according to the current zoom factor. Such a layout stands in
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** contradiction to the fundamental design principles of GTK — the assumption being that
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** all widget layout shall be determined dynamically, to adopt to screen resolution, system
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** fonts and user provided styles and themes.
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**
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** @todo WIP-WIP-WIP as of 11/2018 ///////////////////////////////////////////////////////////////////////TICKET #1185
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** This conflict can be reconciled by representing this time-to-size calibration in the form
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** of a desired minimal extension reported by the individual widget. Since GTK only ever _expands_
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** the widget provided size request (e.g. to accommodate for additional borders and padding from CSS),
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** our timeline canvas can be sure to get at least the necessary extension. Moreover, we can assure,
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** with the help of our custom style sheet, that those size constrained widgets do not require any
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** additional decoration, borders or margin. Accordingly, we choose `Gtk::Frame` as the base class,
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** so the border is drawn as part of the widget's content, with the identification label placed on top.
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**
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** However, after declaring to GTK that the widget can be rendered within the specific size constraint,
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** it now becomes our responsibility to enforce this size constraint onto any child widgets used as
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** part of the ElementBoxWidget — especially we have to query the size required to represent the
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** name-ID label, possibly taking measures to reduce this size to fit
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** @todo as of 9/2022 we just hide the label text completely to comply with the constraints;
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** it is conceivable to use a more elaborate approach and to shorten the label text to fit.
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**
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** @todo WIP-WIP as of 09/2022 ///////////////////////////////////////////////////////////////////////TICKET #1185
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**
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*/
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@ -33,8 +54,7 @@
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#include "stage/widget/element-box-widget.hpp"
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#include "stage/style-scheme.hpp"
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//#include "stage/ui-bus.hpp"
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//#include "lib/format-string.hpp"
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//#include "lib/format-string.hpp" //////////////////TODO debugging
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#include "lib/format-cout.hpp" //////////////////////TODO debugging
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#include "lib/util.hpp"
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@ -44,19 +64,34 @@
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//using util::_Fmt;
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//using util::contains;
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//using Gtk::Widget;
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//using sigc::mem_fun;
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//using sigc::ptr_fun;
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//using std::cout;
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//using std::endl;
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namespace stage {
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namespace widget {
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namespace {//Implementation helpers...
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/**
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* Helper to retrieve what GTK effectively uses as minimal extension of a widget.
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* @remark in fact this is the so called "preferred natural size", since GTK always
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* allocates at least this amount of screen extension. Judging from the GTK 3.24
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* code (as of 9/2022), the minimal size setting and the "size_request" are in most
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* cases just used for consistency checks, while the natural size is determined in accordance
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* to the layout preference (height-for-width or width-for-hight) and then only ever increased
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* to fit further CSS settings (border, margin) and to handle fill-layout.
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* @warning however note that `Gtk::Layout` (which we use as foundation for our Timeline canvas) indeed
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* starts its calculation from the **minimal width** of the attached child widget. Thus, as far
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* as implementing the VFuncs, both cases should be treated symmetrically.
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*/
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inline void
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queryNaturalSize (Gtk::Widget const& widget, Gtk::Requisition& natSize)
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{
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Gtk::Requisition minimumDummy;
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widget.get_preferred_size (minimumDummy, natSize);
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}
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}//(End)helpers
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@ -127,24 +162,25 @@ namespace widget {
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/**
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* Layout preferences are delegated through the Strategy
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* - by default, the strategy will just invoke the inherited vfuncs
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* - by default, the strategy will just invoke the inherited VFuncs
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* - however, when a size constraint for the ElementBoxWidget must be observed,
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* the strategy will control the extension of our child widgets (side-effect)
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* and then just return the extension as dictated by the constraints
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* @remark Based on the GTK-3.22 implementation code, we know that the minimum_width
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* is only used for consistency checks (and otherwise ignored), while the natural_width
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* will always be respected. The GKT layout management might _increase_ that value...
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* @remark Based on the GTK-3.24 implementation code, we know that most usages will draw
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* upon the natural_width, but there are some use cases (esp. `Gtk::Layout`), where the
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* calculation takes minimum_width as starting point. The returned values will always be
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* respected, while the GTK layout engine might _increase_ the given extensions...
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* - do adjust for additional border and margin settings from CSS
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* - and to expand the widget when used within a container with fill-alignment
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* Moreover the #get_preferred_height_for_width_vfunc will be invoked with the
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* results from this function. The possible adjustment is done by invoking the
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* vfunc `adjust_size_allocation` on the GTK-class, which typically delegates to
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* VFunc `adjust_size_allocation` on the GTK-class, which typically delegates to
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* gtk_widget_real_adjust_size_allocation, and the latter invokes
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* - adjust_for_margin
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* - adjust_for_align
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* After these adjustments and some sanity checks, the resulting size allocation
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* is passed to the `size_allocate` vfunc, which could be tapped on the Gtk::Widget
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* C++ wrapper, but usually just stores this allocation into the widget private data.
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* After these adjustments and some sanity checks, the resulting size allocation is passed
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* to the `size_allocate` VFunc, which passes through the `Gtk::Widget::on_size_allocate()`
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* and after that by default stores this allocation into the widget's private data.
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*/
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void
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ElementBoxWidget::get_preferred_width_vfunc (int& minimum_width, int& natural_width) const
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minimum_width = natural_width = strategy_.getWidth();
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else
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_Base::get_preferred_width_vfunc (minimum_width,natural_width);
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cout << "IIII::"<<this<<":: width="<<natural_width<<endl;
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}
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/**
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* @remark only provided for sake of completeness, since GTK code is complex and some code path
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* might ignore our _request mode preference_ and invoke both functions.
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*/
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void
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ElementBoxWidget::get_preferred_height_vfunc (int& minimum_height, int& natural_height) const
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{
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if (strategy_.shall_control_height())
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minimum_height = natural_height = strategy_.getHeight();
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else
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_Base::get_preferred_height_vfunc (minimum_height,natural_height);
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}
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void
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@ -192,39 +240,21 @@ namespace widget {
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void
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ElementBoxWidget::imposeSizeConstraint(int widthC, int heightC)
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{
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//if (not icon_.get_realized()) return;
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bool isRe = name_.get_realized();
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bool isMa = name_.get_mapped();
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ASSERT (name_.get_realized(), "ElementBoxWidget layout constraint imposed "
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"on widget not yet realized by GTK");
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bool hiddenCaption = not name_.get_visible();
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if (not hiddenCaption)
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{
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Gtk::Requisition minDummy{};
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label_.get_preferred_size(minDummy, labelFullSize_);
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}
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cout <<"IMPO::"<<this<<":: labReq.w="<<labelFullSize_.width<<",h="<<labelFullSize_.height
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<<" hidden:"<<hiddenCaption<<endl;
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if (hiddenCaption)
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{
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if (labelFullSize_.width <= widthC and labelFullSize_.height <= heightC)
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{ /////////////////////////////////////////////////////////////////////////////////////////////////TODO: diagnostics -- remove this
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name_.show();
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cout << "SHOW::"<<this<<":: "<<labelFullSize_.width<<" <= "<<widthC <<endl;//////////////////////TODO: diagnostics -- remove this
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} /////////////////////////////////////////////////////////////////////////////////////////////////TODO: diagnostics -- remove this
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{ // detect if label box fits within given size constraint
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queryNaturalSize (label_, labelFullSize_);
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if (labelFullSize_.width > widthC or labelFullSize_.height > heightC)
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name_.hide();
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}
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else
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{
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if (labelFullSize_.width > widthC or labelFullSize_.height > heightC)
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{ /////////////////////////////////////////////////////////////////////////////////////////////////TODO: diagnostics -- remove this
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name_.hide();
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cout << "HIDE::"<<this<<":: "<<labelFullSize_.width<<" > "<<widthC <<endl;///////////////////////TODO: diagnostics -- remove this
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Gtk::Requisition m2, n2; ///////////////////////////////////////////////////////////TODO: diagnostics -- remove this
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label_.get_preferred_size(m2,n2); ///////////////////////////////////////////////////////////TODO: diagnostics -- remove this
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cout << " ::"<<this<<":: labReq.w="<<n2.width<<",h="<<n2.height<<endl; ///////////////////////TODO: diagnostics -- remove this
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} /////////////////////////////////////////////////////////////////////////////////////////////////TODO: diagnostics -- remove this
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if (labelFullSize_.width <= widthC and labelFullSize_.height <= heightC)
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name_.show();
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}
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}
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@ -23,14 +23,22 @@
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/** @file element-box-widget.hpp
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** Widget to render an ID label with associated icon.
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** This is a UI building block used at various places, e.g. to show
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** the name of a clip in the media bins or in the timeline, to indicate
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** the kind of an effect, or to render a marker label in the tracks or
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** the timeline ruler. The common denominator of all those elements is
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** that they combine some icon with a possibly abridged text and render
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** them with a given indicator style, configurable via CSS. There is
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** support for picking the icon and the indicator style based on some
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** notion of _"type"._
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** This is a UI building block used at various places, e.g. to show the name of a clip
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** in the media bins or in the timeline, to indicate the kind of an effect, or to render
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** a marker label in the tracks or the timeline ruler. The common denominator of all those
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** elements is that they combine some icon with a possibly abridged text and render them
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** with a given indicator style, configurable via CSS. There is support for picking the
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** icon and the indicator style based on some notion of _"type"._
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**
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** # Usage
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** Build a custom widget with ElementBoxWidget as base class; invoke the base ctor using
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** the DSL qualifier syntax to select from the preconfigured layout options
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** - the stage::widget::Kind specifies the basic usage situation
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** - expand / collapse functionality can be directly wired with a model::Tangible
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** - a special _size constrained layout_ mode can be activated, to allow for display
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** on a time calibrated canvas; the actual translation from time to pixel size must
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** be done by the concrete subclass (e.g. stage::model::Clip), accessible through
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** the _getter-λ_ passed to the `constrained(λ)` clause.
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**
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** @todo WIP-WIP-WIP as of 11/2018 ///////////////////////////////////////////////////////////////////////TICKET #1185
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** @todo WIP-WIP-WIP as of 9/2022 ///////////////////////////////////////////////////////////////////////TICKET #1219
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@ -45,12 +53,9 @@
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#include "stage/model/expander-revealer.hpp"
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#include "lib/builder-qualifier-support.hpp"
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//#include "lib/util.hpp"
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#include "lib/format-string.hpp" ////////TODO debugging
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#include "lib/symbol.hpp"
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#include "lib/format-string.hpp"
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//#include <memory>
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//#include <vector>
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#include <functional>
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#include <utility>
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#include <string> //////TODO debugging
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@ -73,7 +78,7 @@ namespace widget {
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, CONTENT ///< Widget serves to represent a piece of content (Clip)
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};
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/** the type of content object to derive suitable styling */
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/** the type of content object to derive suitable styling (background colour, icon) */
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enum Type { VIDEO ///< represents moving (or still) image data
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, AUDIO ///< represents sound data
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, TEXT ///< represents text content
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@ -87,35 +92,6 @@ namespace widget {
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};
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using SizeGetter = std::function<int()>;
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////TICKET #1219 : TESTCODE : remove this
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class HackedTxt
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: public Gtk::Label
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{
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public:
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using Gtk::Label::Label;
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protected:
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void
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get_preferred_width_vfunc (int& mw, int& nw) const override
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{
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Gtk::Label::get_preferred_width_vfunc (mw,nw);
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cout << "Haxx::"<<this<<":: pref.w=("<<mw<<", "<<nw<<")"<<endl;
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}
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void
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get_preferred_height_vfunc (int& mh, int& nh) const override
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{
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Gtk::Label::get_preferred_height_vfunc (mh,nh);
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cout << "Haxx::"<<this<<":: pref.h=("<<mh<<", "<<nh<<")"<<endl;
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}
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void
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on_size_allocate (Gtk::Allocation& alloc) override
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{
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cout << "Haxx::"<<this<<":: alloc.w="<<alloc.get_width()<<", h="<<alloc.get_height()<<endl;
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Gtk::Label::on_size_allocate(alloc);
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}
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};
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////TICKET #1219 : TESTCODE : remove this
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/**
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* A basic building block of the Lumiera UI.
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@ -144,8 +120,7 @@ namespace widget {
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Gtk::Box label_;
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Gtk::Image icon_;
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// Gtk::Label name_;
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HackedTxt name_;
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Gtk::Label name_;
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public:
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class Config;
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@ -162,6 +137,7 @@ namespace widget {
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Gtk::SizeRequestMode get_request_mode_vfunc() const final;
|
||||
void get_preferred_width_vfunc (int&, int&) const override;
|
||||
void get_preferred_height_vfunc (int&, int&) const override;
|
||||
void get_preferred_height_for_width_vfunc (int, int&,int&) const override;
|
||||
void on_size_allocate (Gtk::Allocation&) override;
|
||||
|
||||
|
|
@ -207,6 +183,7 @@ namespace widget {
|
|||
};
|
||||
|
||||
|
||||
/** qualify the basic use case for the new ElementBoxWidget */
|
||||
inline ElementBoxWidget::Config::Qualifier
|
||||
kind(Kind kind)
|
||||
{
|
||||
|
|
@ -217,6 +194,7 @@ namespace widget {
|
|||
}};
|
||||
}
|
||||
|
||||
/** define the name-ID displayed in the caption */
|
||||
inline ElementBoxWidget::Config::Qualifier
|
||||
name(string id)
|
||||
{
|
||||
|
|
@ -227,6 +205,7 @@ namespace widget {
|
|||
}};
|
||||
}
|
||||
|
||||
/** provide an expand/collapse button, wired with the given Expander */
|
||||
inline ElementBoxWidget::Config::Qualifier
|
||||
expander(model::Expander& expander)
|
||||
{
|
||||
|
|
@ -237,6 +216,11 @@ namespace widget {
|
|||
}};
|
||||
}
|
||||
|
||||
/**
|
||||
* switch in to size-constrained layout mode.
|
||||
* The base size allocation (without borders and margin) will span exactly
|
||||
* the horizontal extension as retrieved from invoking the SizeGetter.
|
||||
*/
|
||||
inline ElementBoxWidget::Config::Qualifier
|
||||
constrained(SizeGetter widthConstraint)
|
||||
{
|
||||
|
|
@ -247,6 +231,10 @@ namespace widget {
|
|||
}};
|
||||
}
|
||||
|
||||
/**
|
||||
* activate size-constrained layout mode, similar as #constrained(SizeGetter).
|
||||
* Additionally, also the vertical extension is controlled in this variant.
|
||||
*/
|
||||
inline ElementBoxWidget::Config::Qualifier
|
||||
constrained(SizeGetter widthConstraint, SizeGetter heightConstraint)
|
||||
{
|
||||
|
|
@ -260,6 +248,7 @@ namespace widget {
|
|||
}
|
||||
|
||||
|
||||
|
||||
/** setup an ElementBoxWidget with suitable presentation style.
|
||||
* @param widgetKind the basic presentation intent
|
||||
* @param type qualify the type of data represented by this object
|
||||
|
|
|
|||
|
|
@ -18272,9 +18272,9 @@
|
|||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1612620568330" ID="ID_1826613475" MODIFIED="1663977403139" TEXT="Problem: feste Größen-Vorgabe">
|
||||
<node COLOR="#338800" CREATED="1612620568330" ID="ID_1826613475" MODIFIED="1664494458140" TEXT="Problem: feste Größen-Vorgabe">
|
||||
<linktarget COLOR="#f17881" DESTINATION="ID_1826613475" ENDARROW="Default" ENDINCLINATION="1266;110;" ID="Arrow_ID_1550601686" SOURCE="ID_351516626" STARTARROW="None" STARTINCLINATION="2103;126;"/>
|
||||
<icon BUILTIN="pencil"/>
|
||||
<icon BUILTIN="button_ok"/>
|
||||
<node CREATED="1625072904888" ID="ID_373040535" MODIFIED="1625072974106" TEXT="paßt nicht recht in den Gtk-Standard">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
|
@ -18337,8 +18337,8 @@
|
|||
<icon BUILTIN="flag-yellow"/>
|
||||
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1625075275103" ID="ID_1622786444" MODIFIED="1625075281429" TEXT="Konstruktor">
|
||||
<icon BUILTIN="flag-yellow"/>
|
||||
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1625075282830" ID="ID_1730704998" MODIFIED="1625075292624" TEXT="mini-DSL für die Konfigurations-Varianten schaffen">
|
||||
<icon BUILTIN="flag-yellow"/>
|
||||
<node COLOR="#338800" CREATED="1625075282830" ID="ID_1730704998" MODIFIED="1664494473359" TEXT="mini-DSL für die Konfigurations-Varianten schaffen">
|
||||
<icon BUILTIN="button_ok"/>
|
||||
<node CREATED="1654445954424" ID="ID_1720484280" MODIFIED="1661558650010" TEXT="1.Ansatz: explizit">
|
||||
<icon BUILTIN="button_cancel"/>
|
||||
<node CREATED="1654445618173" ID="ID_1315147546" MODIFIED="1654445654111" TEXT="Icon per vordefinierter Spec">
|
||||
|
|
@ -18633,9 +18633,28 @@
|
|||
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1664036044208" ID="ID_1165985409" MODIFIED="1664036049568" TEXT="#1235 draft solution for size-constrained widgets">
|
||||
<icon BUILTIN="flag-yellow"/>
|
||||
</node>
|
||||
<node CREATED="1664486479334" ID="ID_1175352945" MODIFIED="1664486498010" TEXT="Fazit: Widget liefert den Constraint als minimal und als natural request">
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1664027101386" ID="ID_325165287" MODIFIED="1664136719643" TEXT="erforderliche Ausdehnung feststellen">
|
||||
<icon BUILTIN="pencil"/>
|
||||
<node CREATED="1664486499547" ID="ID_1517909946" MODIFIED="1664486599158" TEXT="CSS muß dafür sorgen, daß dem nichts hinzugefügt wird">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
im Besonderen keine Border!
|
||||
</p>
|
||||
<p>
|
||||
Das ist auch genau ein Argument, warum wir auf Gtk::Frame aufsetzen — damit ist der Frame nämlich ins <i>Innere des Widget</i> verlagert, und das Label liegt on-top und grenzt an den Rand an.
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<icon BUILTIN="yes"/>
|
||||
</node>
|
||||
</node>
|
||||
<node COLOR="#338800" CREATED="1664027101386" ID="ID_325165287" MODIFIED="1664494902370" TEXT="erforderliche Ausdehnung feststellen">
|
||||
<icon BUILTIN="button_ok"/>
|
||||
<node CREATED="1664027121220" ID="ID_1123910943" MODIFIED="1664027234710" TEXT="für das ElementBoxWidget stets in Pixel">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
|
@ -18649,29 +18668,56 @@
|
|||
</html></richcontent>
|
||||
<icon BUILTIN="yes"/>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1664027274328" ID="ID_1533967380" MODIFIED="1664136711917" TEXT="Interaktionsmuster der Schnittstelle">
|
||||
<icon BUILTIN="pencil"/>
|
||||
<node COLOR="#435e98" CREATED="1664027342687" ID="ID_987588934" MODIFIED="1664028893912" TEXT="Analyse">
|
||||
<node COLOR="#338800" CREATED="1664027274328" ID="ID_1533967380" MODIFIED="1664494894900" TEXT="Interaktionsmuster der Schnittstelle">
|
||||
<icon BUILTIN="yes"/>
|
||||
<node COLOR="#435e98" CREATED="1664027342687" FOLDED="true" ID="ID_987588934" MODIFIED="1664494887246" TEXT="Analyse">
|
||||
<icon BUILTIN="info"/>
|
||||
<node CREATED="1664027374909" ID="ID_1916479707" MODIFIED="1664027563708" TEXT="Information wird von den GTK-Callbacks benötigt">
|
||||
<icon BUILTIN="info"/>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#f0d5c5" COLOR="#990033" CREATED="1664027389923" ID="ID_1208852991" MODIFIED="1664027552105" TEXT="sie ist also berets zur Initialisierung (oder kurz danach) erforderlich">
|
||||
<icon BUILTIN="help"/>
|
||||
<node BACKGROUND_COLOR="#f0d5c5" COLOR="#990033" CREATED="1664027420141" ID="ID_217473035" MODIFIED="1664032905958" TEXT="wann und wie werden die Callbacks aufgerufen?">
|
||||
<linktarget COLOR="#bf4283" DESTINATION="ID_217473035" ENDARROW="Default" ENDINCLINATION="-989;57;" ID="Arrow_ID_1041626932" SOURCE="ID_945958753" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<node COLOR="#435e98" CREATED="1664027389923" FOLDED="true" ID="ID_1208852991" MODIFIED="1664494880330" TEXT="sie ist also berets zur Initialisierung (oder kurz danach) erforderlich">
|
||||
<icon BUILTIN="yes"/>
|
||||
<node COLOR="#435e98" CREATED="1664027420141" ID="ID_217473035" MODIFIED="1664494566272" TEXT="wann und wie werden die Callbacks aufgerufen?">
|
||||
<linktarget COLOR="#4285bf" DESTINATION="ID_217473035" ENDARROW="Default" ENDINCLINATION="-989;57;" ID="Arrow_ID_1041626932" SOURCE="ID_945958753" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<icon BUILTIN="help"/>
|
||||
</node>
|
||||
<node CREATED="1664027451687" ID="ID_26942945" MODIFIED="1664027457671" TEXT="Vermutung...">
|
||||
<node CREATED="1664027458520" ID="ID_53350409" MODIFIED="1664027468099" TEXT="aus dem Event-Handling"/>
|
||||
<node CREATED="1664027505881" ID="ID_102723884" MODIFIED="1664027518260" TEXT="als Folge einer "invalidation""/>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1664027526879" ID="ID_849843415" MODIFIED="1664027540069" TEXT="an der konkreten Implementierung beobachten">
|
||||
<icon BUILTIN="flag-yellow"/>
|
||||
<node COLOR="#338800" CREATED="1664027526879" ID="ID_849843415" MODIFIED="1664494543169" TEXT="an der konkreten Implementierung beobachten">
|
||||
<icon BUILTIN="button_ok"/>
|
||||
<node CREATED="1664152872453" ID="ID_1559151133" MODIFIED="1664152874424" TEXT="korrekt"/>
|
||||
<node CREATED="1664152875229" ID="ID_1591242265" MODIFIED="1664152886391" TEXT="definitiv aus der Event-Loop"/>
|
||||
<node CREATED="1664152887076" ID="ID_1667743717" MODIFIED="1664152893950" TEXT="und nicht aus dem Widget-ctor"/>
|
||||
</node>
|
||||
<node COLOR="#435e98" CREATED="1664494523077" ID="ID_509196294" MODIFIED="1664494548030" TEXT="die Implementierung der GTK Layout-Engine stellt das sicher">
|
||||
<icon BUILTIN="idea"/>
|
||||
<node CREATED="1664494602946" ID="ID_1093994466" MODIFIED="1664494618443" TEXT="zum "mapping" des Widgets wird die size-Allocation ermittelt"/>
|
||||
<node CREATED="1664494619248" ID="ID_1432947442" MODIFIED="1664494782463" TEXT="hierfür gibt es nur wenige Standard-Implementierungen">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<ul>
|
||||
<li>
|
||||
die wichtigste Implementierung ist in <b>gtk_widget_size_allocate_with_baseline</b>; sie wird von fast allen Containern verwendet, um ihre Kinder zu allozieren
|
||||
</li>
|
||||
<li>
|
||||
top-level Windows, Dialogboxen und Menu-Items verwenden ihre eigene Implementierung
|
||||
</li>
|
||||
<li>
|
||||
Gtk::Layout hat ebenfalls eine vereinfachte Variante: diese geht von dem <b>minimal_size</b> des Widgets aus!
|
||||
</li>
|
||||
</ul>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
</node>
|
||||
<node CREATED="1664494784130" ID="ID_710050245" MODIFIED="1664494808538" TEXT="Alle diese werden nach dem ctor aber vor dem ersten "draw" aufgerufen"/>
|
||||
<node CREATED="1664494810334" ID="ID_1899633587" MODIFIED="1664494830787" TEXT="außerdem werden sie bei jedem Fokus-Wechsel aufgerufen"/>
|
||||
<node CREATED="1664494863383" ID="ID_402498612" MODIFIED="1664494874185" TEXT="danach erfolgt ein set_allocation"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664027626370" ID="ID_244953029" MODIFIED="1664027646110" TEXT="eine falsche Angabe führt zu (vorübergehend) falschem Layout"/>
|
||||
<node CREATED="1664027651294" ID="ID_1669994961" MODIFIED="1664028901505" TEXT="»push« bedeutet...">
|
||||
|
|
@ -18831,8 +18877,8 @@
|
|||
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1664035985288" ID="ID_1514029086" MODIFIED="1664035990688" TEXT="#1238 hide ElementBoxWidget label to meet size constraint">
|
||||
<icon BUILTIN="flag-yellow"/>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#eef0c5" COLOR="#990000" CREATED="1664032709767" ID="ID_89148369" MODIFIED="1664152782210" TEXT="einfache Lösung: per Seiteneffekt verbergen">
|
||||
<icon BUILTIN="pencil"/>
|
||||
<node COLOR="#338800" CREATED="1664032709767" FOLDED="true" ID="ID_89148369" MODIFIED="1664494944351" TEXT="einfache Lösung: per Seiteneffekt verbergen">
|
||||
<icon BUILTIN="button_ok"/>
|
||||
<node COLOR="#338800" CREATED="1664032721142" ID="ID_999001948" MODIFIED="1664313668307" TEXT="geht das?">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
|
@ -18969,7 +19015,7 @@
|
|||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<b>Fazit</b>: ja die Lösung <font color="#6206ae">funktioniert</font> uns erscheint stabil
|
||||
<b>Fazit</b>: ja die Lösung <font color="#6206ae">funktioniert</font> und erscheint stabil
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
|
|
@ -18980,8 +19026,72 @@
|
|||
<node COLOR="#435e98" CREATED="1664152748537" ID="ID_1604673752" MODIFIED="1664152775554" TEXT="besser: on_size_allocate verwenden">
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
<node COLOR="#435e98" CREATED="1664027420141" ID="ID_969143327" MODIFIED="1664312508858" TEXT="führt das zu einem re-Draw?">
|
||||
<linktarget COLOR="#bf4283" DESTINATION="ID_969143327" ENDARROW="Default" ENDINCLINATION="-1003;96;" ID="Arrow_ID_190980327" SOURCE="ID_945958753" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<node CREATED="1664404663320" FOLDED="true" ID="ID_1822441152" MODIFIED="1664494935891" TEXT="minimal-size einführen">
|
||||
<icon BUILTIN="button_cancel"/>
|
||||
<node CREATED="1664404674695" ID="ID_1745650030" MODIFIED="1664404686405" TEXT="Minimum sollte die Ausdehnung des Icon sein">
|
||||
<icon BUILTIN="yes"/>
|
||||
</node>
|
||||
<node CREATED="1664404687461" ID="ID_464093874" MODIFIED="1664404789460" TEXT="size_request und minimal-size werden von GTK nicht wirklich verwendet">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
...daher scheidet die offensichtliche einfache Lösung aus: nämlich einen size-request in der Größe des Icon zu setzen...
|
||||
</p>
|
||||
<p>
|
||||
Stattdessen müssen wir dieses Minimum explizit in die Verarbeitung des size-Constraint einarbeiten, und dabe auf der <i>natural-size</i> des Icon aufbauen
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<icon BUILTIN="clanbomber"/>
|
||||
</node>
|
||||
<node CREATED="1664404791911" ID="ID_1038149541" MODIFIED="1664486283099">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
Nein! minimal und natural size <b>sollten gleich sein</b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<arrowlink COLOR="#bed1fd" DESTINATION="ID_1768206919" ENDARROW="Default" ENDINCLINATION="-2510;160;" ID="Arrow_ID_1173769741" STARTARROW="None" STARTINCLINATION="-2083;106;"/>
|
||||
<icon BUILTIN="stop-sign"/>
|
||||
<node CREATED="1664486239918" ID="ID_393871048" MODIFIED="1664486273354" TEXT="unser size-constraint sollte auf beide gleichermaßen wirken">
|
||||
<icon BUILTIN="yes"/>
|
||||
</node>
|
||||
<node CREATED="1664486285336" ID="ID_1824223190" MODIFIED="1664486318819" TEXT="die allermeisten Container gehen von natural_size aus">
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
<node CREATED="1664486295583" ID="ID_375004402" MODIFIED="1664486313154" TEXT="aber (relevant!) Gtk::Layout geht von minimal_width aus">
|
||||
<icon BUILTIN="messagebox_warning"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664486326706" ID="ID_23033105" MODIFIED="1664486428143" TEXT="strikt an die logische Bedeutung halten">
|
||||
<icon BUILTIN="idea"/>
|
||||
<node CREATED="1664486342176" ID="ID_1766841402" MODIFIED="1664486354403" TEXT="minimal: "the minimum a widget neets to work properly""/>
|
||||
<node CREATED="1664486355182" ID="ID_1887502358" MODIFIED="1664486366330" TEXT="in unserem Fall ist das der Size-constraint"/>
|
||||
<node CREATED="1664486367173" ID="ID_203408708" MODIFIED="1664486380447" TEXT="und das Widget muß dann intern dafür sorgen, daß es seinen Content da reinbekommt"/>
|
||||
<node CREATED="1664486398329" ID="ID_1798174878" MODIFIED="1664486423313" TEXT="GTK wird selber niemals ein Widget "stauchen"">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
wenn, dann muß man das dynamisch implementieren...
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node COLOR="#435e98" CREATED="1664027420141" FOLDED="true" ID="ID_969143327" MODIFIED="1664312508858" TEXT="führt das zu einem re-Draw?">
|
||||
<linktarget COLOR="#4272bf" DESTINATION="ID_969143327" ENDARROW="Default" ENDINCLINATION="-1003;96;" ID="Arrow_ID_190980327" SOURCE="ID_945958753" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<icon BUILTIN="help"/>
|
||||
<node CREATED="1664312511033" ID="ID_1716799052" MODIFIED="1664312589370" TEXT="wahrscheinlich Nein">
|
||||
<icon BUILTIN="forward"/>
|
||||
|
|
@ -19384,9 +19494,9 @@
|
|||
</node>
|
||||
<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1664032772511" ID="ID_1018439357" MODIFIED="1664032782461" TEXT="Untersuchungen">
|
||||
<icon BUILTIN="hourglass"/>
|
||||
<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1664032818869" ID="ID_945958753" MODIFIED="1664033227851" TEXT="GTK-Interna">
|
||||
<arrowlink COLOR="#bf4283" DESTINATION="ID_217473035" ENDARROW="Default" ENDINCLINATION="-989;57;" ID="Arrow_ID_1041626932" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<arrowlink COLOR="#bf4283" DESTINATION="ID_969143327" ENDARROW="Default" ENDINCLINATION="-1003;96;" ID="Arrow_ID_190980327" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1664032818869" ID="ID_945958753" MODIFIED="1664494574785" TEXT="GTK-Interna">
|
||||
<arrowlink COLOR="#4285bf" DESTINATION="ID_217473035" ENDARROW="Default" ENDINCLINATION="-989;57;" ID="Arrow_ID_1041626932" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<arrowlink COLOR="#4272bf" DESTINATION="ID_969143327" ENDARROW="Default" ENDINCLINATION="-1003;96;" ID="Arrow_ID_190980327" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<arrowlink COLOR="#bf4283" DESTINATION="ID_891209068" ENDARROW="Default" ENDINCLINATION="-836;28;" ID="Arrow_ID_120092077" STARTARROW="None" STARTINCLINATION="260;-42;"/>
|
||||
<icon BUILTIN="hourglass"/>
|
||||
</node>
|
||||
|
|
@ -32218,7 +32328,7 @@
|
|||
<font ITALIC="true" NAME="SansSerif" SIZE="12"/>
|
||||
<icon BUILTIN="messagebox_warning"/>
|
||||
</node>
|
||||
<node COLOR="#338800" CREATED="1532788645307" FOLDED="true" ID="ID_254810710" MODIFIED="1561827465292" TEXT="Trigger-Technik klären">
|
||||
<node COLOR="#338800" CREATED="1532788645307" ID="ID_254810710" MODIFIED="1561827465292" TEXT="Trigger-Technik klären">
|
||||
<icon BUILTIN="button_ok"/>
|
||||
<node COLOR="#435e98" CREATED="1532788681197" HGAP="336" ID="ID_32192034" MODIFIED="1576282358033" TEXT="bei GTK selber abschauen" VSHIFT="-52">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
|
|
@ -32598,7 +32708,7 @@
|
|||
<node CREATED="1532797180066" ID="ID_687615166" MODIFIED="1532797192496" TEXT="siehe Ticket #1032">
|
||||
<icon BUILTIN="info"/>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1533218052308" ID="ID_1734927969" MODIFIED="1533218091117" TEXT="neue Kategorie: technical/code base/ GTK">
|
||||
<node COLOR="#435e98" CREATED="1533218052308" ID="ID_1734927969" LINK="https://lumiera.org/documentation/technical/code/gtk/index.html" MODIFIED="1664481533409" TEXT="neue Kategorie: technical/code base/ GTK">
|
||||
<icon BUILTIN="yes"/>
|
||||
</node>
|
||||
<node COLOR="#338800" CREATED="1533218096245" ID="ID_1901487140" MODIFIED="1533325344852" TEXT="dort Seite startup">
|
||||
|
|
@ -58211,14 +58321,28 @@
|
|||
</node>
|
||||
<node CREATED="1663946250024" ID="ID_1142643633" MODIFIED="1663946255308" TEXT="Layout management">
|
||||
<node CREATED="1663946256977" ID="ID_1464608958" MODIFIED="1663946261875" TEXT="Thema: Size-Handling">
|
||||
<node COLOR="#435e98" CREATED="1612527499386" HGAP="34" ID="ID_615948747" MODIFIED="1663946547267" TEXT="Untersuchung: size_request — 2/21 für Clip-Display" VSHIFT="-49">
|
||||
<node COLOR="#435e98" CREATED="1612527499386" HGAP="34" ID="ID_615948747" MODIFIED="1664401278771" TEXT="Untersuchung: size_request — 2/21 + 9/22 für Clip-Display" VSHIFT="-49">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
....bin damals mit size_request eingestiegen — aber von dort bald auf <font face="Monospaced" size="3" color="#f72929">gtk_widget_size_allocate_with_baseline </font>gestoßen; letzteres ist die eigentliche zentrale Funktion
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<linktarget COLOR="#364ec7" DESTINATION="ID_615948747" ENDARROW="Default" ENDINCLINATION="-1440;0;" ID="Arrow_ID_866144981" SOURCE="ID_643882250" STARTARROW="None" STARTINCLINATION="-1942;189;"/>
|
||||
<linktarget COLOR="#4b67b0" DESTINATION="ID_615948747" ENDARROW="Default" ENDINCLINATION="-1100;0;" ID="Arrow_ID_1297405131" SOURCE="ID_1143769023" STARTARROW="None" STARTINCLINATION="-2000;141;"/>
|
||||
<icon BUILTIN="info"/>
|
||||
<node CREATED="1612530135923" ID="ID_597723725" MODIFIED="1612530155607" TEXT="gtkwidget.c Zeile 5960ff">
|
||||
<icon BUILTIN="info"/>
|
||||
</node>
|
||||
<node CREATED="1612532127121" ID="ID_1698900734" MODIFIED="1612532140107" TEXT="gtk_widget_set_size_request">
|
||||
<node COLOR="#990000" CREATED="1664400907408" HGAP="25" ID="ID_1036425614" MODIFIED="1664401150443" TEXT="Vorsicht Sackgasse" VSHIFT="1">
|
||||
<icon BUILTIN="stop-sign"/>
|
||||
<node CREATED="1612532127121" FOLDED="true" ID="ID_1698900734" MODIFIED="1664474635424" TEXT="gtk_widget_set_size_request">
|
||||
<icon BUILTIN="idea"/>
|
||||
<icon BUILTIN="stop-sign"/>
|
||||
<node CREATED="1663948672795" ID="ID_1935344830" MODIFIED="1663948681710" TEXT=" gtkwidget.c 11186"/>
|
||||
<node CREATED="1663949014421" ID="ID_761292468" MODIFIED="1663949024301" TEXT="definiert die Mindes-Anforderung dieses Widgets"/>
|
||||
<node CREATED="1663949035261" ID="ID_1775424216" MODIFIED="1663949054174" TEXT="kann undefiniert sein (-1) ⟹ dann natural request"/>
|
||||
|
|
@ -58260,6 +58384,284 @@
|
|||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664400929963" ID="ID_1240876072" MODIFIED="1664400943998" TEXT="size_request sieht ganz stark nach einem obsoleten Konzept aus">
|
||||
<icon BUILTIN="messagebox_warning"/>
|
||||
</node>
|
||||
<node CREATED="1664400954960" ID="ID_776024263" MODIFIED="1664400966888" TEXT="er wirkt sich eigentlich nur auf die min-size aus"/>
|
||||
<node CREATED="1664400967726" ID="ID_1498608883" MODIFIED="1664465602240" TEXT="und diese wird oft nur für Konsistenzchecks verwendet"/>
|
||||
<node CREATED="1664465681826" ID="ID_1467702205" MODIFIED="1664465820561" TEXT="nicht klar wann die min-size verwendet wird">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<ul>
|
||||
<li>
|
||||
Container-Widgets haben so etwas wie ein generisches Layout-Muster ⟹ <b>gtk_widget_size_allocate_with_baseline</b>
|
||||
</li>
|
||||
<li>
|
||||
ABER es gibt anscheinend viele Widgets, die das direkt machen (und vom Container-Konzept bewegt sich GTK weg, zu Gunsten des Konzepts "CSS Gadget"); konkret habe ich bei einem <b>GtkFrame</b> durchaus beobachtet, daß dem Widget nur seine geforderte min-size zugeteilt wurde
|
||||
</li>
|
||||
</ul>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<icon BUILTIN="messagebox_warning"/>
|
||||
<node CREATED="1664474172428" ID="ID_982750434" MODIFIED="1664474183159" TEXT="normaler Container-Code ignoriert sie"/>
|
||||
<node CREATED="1664474184106" ID="ID_1675446189" MODIFIED="1664474193374" TEXT="flow-Layout beachtet sie als Anschlag"/>
|
||||
<node CREATED="1664474193962" ID="ID_1768206919" MODIFIED="1664486187383" TEXT="GtkLayout(Canvas) verwendet sie als Basis">
|
||||
<arrowlink COLOR="#a9b4c1" DESTINATION="ID_1788566311" ENDARROW="Default" ENDINCLINATION="-47;-177;" ID="Arrow_ID_590130036" STARTARROW="None" STARTINCLINATION="287;18;"/>
|
||||
<linktarget COLOR="#bed1fd" DESTINATION="ID_1768206919" ENDARROW="Default" ENDINCLINATION="-2510;160;" ID="Arrow_ID_1173769741" SOURCE="ID_1038149541" STARTARROW="None" STARTINCLINATION="-2083;106;"/>
|
||||
<icon BUILTIN="messagebox_warning"/>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1664467386286" ID="ID_175060844" MODIFIED="1664474394992" TEXT="widget_class->size_allocate">
|
||||
<font NAME="SansSerif" SIZE="14"/>
|
||||
<icon BUILTIN="back"/>
|
||||
<node BACKGROUND_COLOR="#e0ceaa" COLOR="#690f14" CREATED="1664467416306" ID="ID_111898596" MODIFIED="1664474697760" STYLE="bubble">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<u>Einstiegspunkt</u> aus vielen Widgets
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<edge COLOR="#5247dc"/>
|
||||
<font NAME="SansSerif" SIZE="14"/>
|
||||
</node>
|
||||
<node CREATED="1664474418764" ID="ID_602033868" MODIFIED="1664474496100" TEXT="wer ruft das auf?">
|
||||
<linktarget COLOR="#655e7d" DESTINATION="ID_602033868" ENDARROW="Default" ENDINCLINATION="-419;67;" ID="Arrow_ID_1884820801" SOURCE="ID_165291290" STARTARROW="None" STARTINCLINATION="-846;67;"/>
|
||||
<node CREATED="1664471955447" ID="ID_748019971" MODIFIED="1664474513890" TEXT="Aufruf via widget_class!"/>
|
||||
<node CREATED="1664471995913" ID="ID_486609942" MODIFIED="1664472003787" TEXT="hängt vom Widget ab">
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
<node CREATED="1664472301300" ID="ID_1282453232" MODIFIED="1664472485480" TEXT="nur wenige Aufrufe">
|
||||
<node CREATED="1664472486343" ID="ID_12332143" MODIFIED="1664472489155" TEXT="top-level">
|
||||
<node CREATED="1664472498670" ID="ID_928074515" MODIFIED="1664472506937" TEXT="gtk_application_window_real_size_allocate"/>
|
||||
<node CREATED="1664472541528" ID="ID_1301393892" MODIFIED="1664472545202" TEXT="einige Dialogboxen"/>
|
||||
<node CREATED="1664472707992" ID="ID_1435876974" MODIFIED="1664474945399">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<b>gtk_widget_size_allocate_with_baseline</b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<arrowlink COLOR="#692b5b" DESTINATION="ID_563938836" ENDARROW="Default" ENDINCLINATION="668;-205;" ID="Arrow_ID_378269338" STARTARROW="None" STARTINCLINATION="-279;578;"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664472574035" ID="ID_535631528" MODIFIED="1664472582542" TEXT="gtk_label_size_allocate"/>
|
||||
<node CREATED="1664474775284" ID="ID_1855152369" MODIFIED="1664474877769" TEXT="gtk_layout_size_allocate">
|
||||
<arrowlink COLOR="#d8764f" DESTINATION="ID_159142787" ENDARROW="Default" ENDINCLINATION="53;-60;" ID="Arrow_ID_1501616113" STARTARROW="None" STARTINCLINATION="217;26;"/>
|
||||
</node>
|
||||
<node CREATED="1664472596690" ID="ID_1526836824" MODIFIED="1664472603892" TEXT="gtk_level_bar_size_allocate"/>
|
||||
<node CREATED="1664472629652" ID="ID_844975218" MODIFIED="1664472635736" TEXT="gtk_overlay_size_allocate"/>
|
||||
<node CREATED="1664472651913" ID="ID_1391420718" MODIFIED="1664472657652" TEXT="gtk_scale_size_allocate"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664473954962" ID="ID_1808329181" MODIFIED="1664474389674" TEXT="">
|
||||
<node CREATED="1664473992889" ID="ID_1943066029" MODIFIED="1664474570171" TEXT="Normalerweise">
|
||||
<node CREATED="1664474571526" ID="ID_1267258985" MODIFIED="1664474577490" TEXT="fragt das Kind-Widget"/>
|
||||
<node CREATED="1664474578174" ID="ID_1361243851" MODIFIED="1664474587235" TEXT="ermittelt daraus den Platzbedarf"/>
|
||||
</node>
|
||||
<node CREATED="1664474033815" ID="ID_559670461" MODIFIED="1664474077090">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<b>aber</b>: spezielle Widgets/Container
|
||||
</p>
|
||||
<p>
|
||||
behandeln hier die Child-Widgets
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<icon BUILTIN="idea"/>
|
||||
<node CREATED="1664472707992" ID="ID_1917960846" MODIFIED="1664474093490">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<b>gtk_widget_size_allocate_with_baseline</b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<arrowlink COLOR="#692b5b" DESTINATION="ID_563938836" ENDARROW="Default" ENDINCLINATION="621;-190;" ID="Arrow_ID_152388281" STARTARROW="None" STARTINCLINATION="-357;417;"/>
|
||||
</node>
|
||||
<node CREATED="1664474775284" ID="ID_256729062" MODIFIED="1664474808855" TEXT="gtk_layout_size_allocate">
|
||||
<node CREATED="1664474099975" ID="ID_159142787" MODIFIED="1664474867466" TEXT="Canvas-Widget: GtkLayout">
|
||||
<linktarget COLOR="#d8764f" DESTINATION="ID_159142787" ENDARROW="Default" ENDINCLINATION="53;-60;" ID="Arrow_ID_1501616113" SOURCE="ID_1855152369" STARTARROW="None" STARTINCLINATION="217;26;"/>
|
||||
<icon BUILTIN="messagebox_warning"/>
|
||||
<node CREATED="1664474832124" ID="ID_489352324" MODIFIED="1664474842148" TEXT="gtk_layout_allocate_child"/>
|
||||
<node CREATED="1664474124347" ID="ID_304352916" MODIFIED="1664474846281" TEXT="ist speziell">
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
<node CREATED="1664474128731" ID="ID_1788566311" MODIFIED="1664474227120" TEXT="geht bei der Zuteilung vom min-Size aus">
|
||||
<linktarget COLOR="#a9b4c1" DESTINATION="ID_1788566311" ENDARROW="Default" ENDINCLINATION="-47;-177;" ID="Arrow_ID_590130036" SOURCE="ID_1768206919" STARTARROW="None" STARTINCLINATION="287;18;"/>
|
||||
</node>
|
||||
<node CREATED="1664474142145" ID="ID_1619579487" MODIFIED="1664474155419" TEXT="dann weiter height-for-width oder umgekehrt"/>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664467426400" ID="ID_323560628" MODIFIED="1664467636855">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
Beachte: <font face="Monospaced" size="3">_GtkCssGadgetClass-><b>allocate</b></font>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<node CREATED="1664467481890" ID="ID_1905806062" MODIFIED="1664467488412" TEXT="bekommt eine "allocate_func""/>
|
||||
<node CREATED="1664467720488" ID="ID_994987639" MODIFIED="1664467794848">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
<u><i>typischerweise</i>(via GadgetClass)</u>: <font face="Monospaced">gtk_css_gadget_real_allocate</font>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
</node>
|
||||
<node CREATED="1664467644459" ID="ID_45450826" MODIFIED="1664467662907" TEXT="CSS-Gadgets werden in Zukunft wichtiger">
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
<node CREATED="1664468000858" ID="ID_1650947202" MODIFIED="1664468006117" TEXT="gadget_class->allocate">
|
||||
<node CREATED="1664468030167" ID="ID_1269527361" MODIFIED="1664468035642" TEXT="von: gtk_css_custom_gadget_allocate"/>
|
||||
<node CREATED="1664468049900" ID="ID_1444284149" MODIFIED="1664468072369" TEXT="von: gtk_css_gadget_allocate">
|
||||
<icon BUILTIN="back"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664468221301" ID="ID_815029757" MODIFIED="1664468225639" TEXT="Beispiel GtkFrame">
|
||||
<node CREATED="1664468568742" ID="ID_276645627" MODIFIED="1664468573479" TEXT="Aufruf kommt von gtk_css_custom_gadget_allocate">
|
||||
<node CREATED="1664468592906" ID="ID_240073713" MODIFIED="1664468602629" TEXT="effektiv von gadget_class->allocate"/>
|
||||
<node CREATED="1664468725965" ID="ID_1819801827" MODIFIED="1664468747176">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
und damit wieder von <b><font face="Monospaced">gtk_css_gadget_allocate</font></b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<linktarget COLOR="#3865cd" DESTINATION="ID_1819801827" ENDARROW="Default" ENDINCLINATION="99;109;" ID="Arrow_ID_1378453284" SOURCE="ID_588778933" STARTARROW="None" STARTINCLINATION="390;0;"/>
|
||||
</node>
|
||||
<node CREATED="1664469502600" ID="ID_611893108" MODIFIED="1664469518960">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
allerdings dann vom <u>umschließenden Widget</u>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<icon BUILTIN="idea"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664469528852" ID="ID_1753828620" MODIFIED="1664469548960">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
Implementierung: <b><font face="Monospaced">gtk_frame_allocate</font></b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<node CREATED="1664469632391" ID="ID_1730366357" MODIFIED="1664469639668" TEXT="ignoriert die übergebene Allocation"/>
|
||||
<node CREATED="1664469640285" ID="ID_1706931088" MODIFIED="1664469888214" TEXT="Ausgabe-Parameter ist: out_clip">
|
||||
<linktarget COLOR="#35d4cd" DESTINATION="ID_1706931088" ENDARROW="Default" ENDINCLINATION="-220;-17;" ID="Arrow_ID_1835745476" SOURCE="ID_1957306429" STARTARROW="None" STARTINCLINATION="74;-5;"/>
|
||||
<icon BUILTIN="messagebox_warning"/>
|
||||
</node>
|
||||
<node CREATED="1664469669402" ID="ID_925561460" MODIFIED="1664469736117" TEXT="berechnet from scratch eine child_allocation">
|
||||
<arrowlink COLOR="#4483c1" DESTINATION="ID_24474469" ENDARROW="Default" ENDINCLINATION="75;-66;" ID="Arrow_ID_839164355" STARTARROW="None" STARTINCLINATION="-113;9;"/>
|
||||
</node>
|
||||
<node CREATED="1664468238896" ID="ID_1603959960" MODIFIED="1664468245349" TEXT="justiert die um die Frame-Dekoration"/>
|
||||
<node CREATED="1664469756095" ID="ID_1426249821" MODIFIED="1664469802527" TEXT="und gibt das an das eigene Gadget weiter">
|
||||
<arrowlink COLOR="#49a9e2" DESTINATION="ID_588778933" ENDARROW="Default" ENDINCLINATION="17;-13;" ID="Arrow_ID_1888006033" STARTARROW="None" STARTINCLINATION="-114;8;"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664468227932" ID="ID_24474469" MODIFIED="1664469730107" TEXT="gtk_frame_compute_child_allocation">
|
||||
<linktarget COLOR="#4483c1" DESTINATION="ID_24474469" ENDARROW="Default" ENDINCLINATION="75;-66;" ID="Arrow_ID_839164355" SOURCE="ID_925561460" STARTARROW="None" STARTINCLINATION="-113;9;"/>
|
||||
<node CREATED="1664468348482" ID="ID_1161990345" MODIFIED="1664468349364" TEXT="gtk_frame_real_compute_child_allocation"/>
|
||||
<node CREATED="1664468414498" ID="ID_1237799901" MODIFIED="1664468418149" TEXT="diese ruft auf: gtk_css_gadget_get_content_allocation">
|
||||
<node CREATED="1664470070987" ID="ID_1498695149" MODIFIED="1664470117430">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
dieses baut auf auf: <b><font face="Monospaced">gtk_css_gadget_allocate</font></b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<node CREATED="1664471526800" ID="ID_346003014" MODIFIED="1664471579040" TEXT="es verwendet nämlich den vorhandenen priv->allocated_size"/>
|
||||
<node CREATED="1664471678866" ID="ID_1301393710" MODIFIED="1664471693326" TEXT="und der wird nur von gtk_css_gadget_allocate gesetzt"/>
|
||||
<node CREATED="1664471696617" ID="ID_165291290" MODIFIED="1664474496099" TEXT="Preisfrage: wer ruft letzteres auf?">
|
||||
<arrowlink COLOR="#655e7d" DESTINATION="ID_602033868" ENDARROW="Default" ENDINCLINATION="-419;67;" ID="Arrow_ID_1884820801" STARTARROW="None" STARTINCLINATION="-846;67;"/>
|
||||
<icon BUILTIN="help"/>
|
||||
<node CREATED="1664472004680" ID="ID_1104307328" MODIFIED="1664473489163">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
(konkret im Beispiel): <b><font face="Monospaced">gtk_frame_size_allocate</font></b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664473514122" ID="ID_1482686732" MODIFIED="1664473548372" TEXT="Fazit: die Basis-Allokation stammt aus der bekannten Berechnungs-Routine">
|
||||
<icon BUILTIN="back"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664470127589" ID="ID_737926476" MODIFIED="1664470137023" TEXT="dekoriert und erweitert gemäß CSS"/>
|
||||
<node CREATED="1664470140690" ID="ID_155338555" MODIFIED="1664470151199" TEXT="setzt damit die Werte im Ausgabe-parameter"/>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1664468245849" ID="ID_588778933" MODIFIED="1664469796939">
|
||||
<richcontent TYPE="NODE"><html>
|
||||
<head>
|
||||
|
||||
</head>
|
||||
<body>
|
||||
<p>
|
||||
ruft damit <b><font face="Monospaced">gtk_css_gadget_allocate</font></b>
|
||||
</p>
|
||||
</body>
|
||||
</html></richcontent>
|
||||
<arrowlink COLOR="#3865cd" DESTINATION="ID_1819801827" ENDARROW="Default" ENDINCLINATION="99;109;" ID="Arrow_ID_1378453284" STARTARROW="None" STARTINCLINATION="390;0;"/>
|
||||
<linktarget COLOR="#49a9e2" DESTINATION="ID_588778933" ENDARROW="Default" ENDINCLINATION="17;-13;" ID="Arrow_ID_1888006033" SOURCE="ID_1426249821" STARTARROW="None" STARTINCLINATION="-114;8;"/>
|
||||
</node>
|
||||
<node CREATED="1664469820733" ID="ID_1957306429" MODIFIED="1664469888214" TEXT="Resultat: out-clip (incl shaddow)">
|
||||
<arrowlink COLOR="#35d4cd" DESTINATION="ID_1706931088" ENDARROW="Default" ENDINCLINATION="-220;-17;" ID="Arrow_ID_1835745476" STARTARROW="None" STARTINCLINATION="74;-5;"/>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
</node>
|
||||
<node CREATED="1663954860585" ID="ID_1293292924" MODIFIED="1663954864003" TEXT="resize_needed">
|
||||
<node CREATED="1663954865611" ID="ID_1181046845" MODIFIED="1663954871465" TEXT="interne Flag im widget"/>
|
||||
<node CREATED="1663954879636" ID="ID_1910791425" MODIFIED="1663954884163" TEXT="Verwendungen">
|
||||
|
|
@ -58289,6 +58691,8 @@
|
|||
</body>
|
||||
</html></richcontent>
|
||||
<arrowlink COLOR="#4c96df" DESTINATION="ID_619170334" ENDARROW="Default" ENDINCLINATION="22;-288;" ID="Arrow_ID_1241133759" STARTARROW="None" STARTINCLINATION="-30;150;"/>
|
||||
<linktarget COLOR="#692b5b" DESTINATION="ID_563938836" ENDARROW="Default" ENDINCLINATION="621;-190;" ID="Arrow_ID_152388281" SOURCE="ID_1917960846" STARTARROW="None" STARTINCLINATION="-357;417;"/>
|
||||
<linktarget COLOR="#692b5b" DESTINATION="ID_563938836" ENDARROW="Default" ENDINCLINATION="668;-205;" ID="Arrow_ID_378269338" SOURCE="ID_1435876974" STARTARROW="None" STARTINCLINATION="-279;578;"/>
|
||||
<linktarget COLOR="#852376" DESTINATION="ID_563938836" ENDARROW="Default" ENDINCLINATION="18;-93;" ID="Arrow_ID_1194665328" SOURCE="ID_1959081786" STARTARROW="None" STARTINCLINATION="-211;17;"/>
|
||||
<icon BUILTIN="idea"/>
|
||||
<node CREATED="1663955121019" ID="ID_1249298775" MODIFIED="1663955138898" TEXT="wird direkt anscheinend nur von Init aus aktiviert"/>
|
||||
|
|
@ -61046,7 +61450,7 @@
|
|||
<icon BUILTIN="hourglass"/>
|
||||
</node>
|
||||
</node>
|
||||
<node COLOR="#174f60" CREATED="1664058057316" FOLDED="true" ID="ID_1582660555" MODIFIED="1664059276465" TEXT="vergessen">
|
||||
<node COLOR="#174f60" CREATED="1664058057316" FOLDED="true" ID="ID_1582660555" MODIFIED="1664481410091" TEXT="vergessen">
|
||||
<icon BUILTIN="licq"/>
|
||||
<node BACKGROUND_COLOR="#d2beaf" COLOR="#5c4d6e" CREATED="1664058236108" ID="ID_616634560" LINK="#ID_633007604" MODIFIED="1664058551602" TEXT="Design um den Display-Frame im Timeline-Layout">
|
||||
<richcontent TYPE="NOTE"><html>
|
||||
|
|
|
|||
Loading…
Reference in a new issue