Fe Sizer BEST Free Download
Joie Coffield
I have a script that utilizes multiple panels depending on which lines of code are being executed at that time. My intention is to show and hide panels as needed and use Layout after each change to keep everything nice and neat. This is working for me in general, but I ran into a snag. At first when the number of panels was small I was hiding the necessary ones via the panel names or other sizer item names. As the script has become more complex that has ceased to be practical, so it was my intention to always hide everything each time, so I did not have to worry about keeping track of what was being displayed at any given time and then just show the panel that was needed at that point in execution. Looking at sizer documentation I thought it would be a simple matter of using:
On an EVT_BUTTON event I get the button object. To move the button object around in the grid, to a different grid cell, I need to move the top level sizer, s1, which is the direct "child" (if that's the correct term) of the GridBagSizer, gs. What is the best way to find the top-level sizer?
A trick I've done sometimes is to take one of the widgets managed by the sizer I'm working with, get its parent, and then get the parent's sizer. Unless you're doing something really weird that should be the top-level parent sizer of the sizer you're working with (or the sizer itself if it is the one at the top of that hierarchy.
I wrote two classes extending wx.Panel, one to display / manage the rectangles with the data and one for the map that will show the rectangles before digging deeper into ui features and discovering the sizers.
Now I am unsure what panels are used for since I saw lots of examples and the sizer explanation where you have one main panel and then just add all other objects to sizers instead of child panels. Do I have to change my panel classes to sizer classes instead?
With Python, the Sizer acts as its own object in the hierarchy. All objects need a sizer as a parent (except for the first panel within a Frame). The sizer manages the objects directly. It acts as an adapter for other child objects.
dear @humbertohall
I used a lot particlesizer I think the problem of the image not recognized is the presence of the spaces in your filename (try to rename them without spaces I think it will work since I had the same problem and solved that way)
or maybe @twagner could try to fix that bug in the code.
@humbertohall
Could please replace the version with the following and give feedback if the issue is resolved?
GitHub thorstenwagner/ij-particlesizerij-particlesizer - ImageJ plugin to derive number based size distributions based on recorded TEM images. A focus of the development was to provide different splitting methods to handle agglomerates...
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Unlike the original wxWidgets Dialog Editor, editors such as wxDesigner, DialogBlocks, XRCed and wxWorkshop create dialogs based exclusively on sizers, practically forcing the user to create platform independent layouts without compromises.
The layout algorithm used by sizers in wxWidgets is closely related to layout systems in other GUI toolkits, such as Java's AWT, the GTK toolkit or the Qt toolkit. It is based upon the idea of individual subwindows reporting their minimal required size and their ability to get stretched if the size of the parent window has changed. This will most often mean that the programmer does not set the start-up size of a dialog, the dialog will rather be assigned a sizer and this sizer will be queried about the recommended size. This sizer in turn will query its children (which can be normal windows, empty space or other sizers) so that a hierarchy of sizers can be constructed. Note that wxSizer does not derive from wxWindow and thus does not interfere with tab ordering and requires very few resources compared to a real window on screen.
What makes sizers so well fitted for use in wxWidgets is the fact that every control reports its own minimal size and the algorithm can handle differences in font sizes or different window (dialog item) sizes on different platforms without problems. For example, if the standard font as well as the overall design of Linux/GTK widgets requires more space than on Windows, the initial dialog size will automatically be bigger on Linux/GTK than on Windows.
There are currently five different kinds of sizers available in wxWidgets. Each represents either a certain way to lay out dialog items in a dialog or it fulfills a special task such as wrapping a static box around a dialog item (or another sizer). These sizers will be discussed one by one in the text below. For more detailed information on how to use sizers programmatically, please refer to the section Programming with wxBoxSizer.
All sizers are containers, that is, they are used to lay out one dialog item (or several dialog items), which they contain. Such items are sometimes referred to as the children of the sizer. Independent of how the individual sizers lay out their children, all children have certain features in common:
An alignment: Often, a dialog item is given more space than its minimal size plus its border. Depending on what flags are used for the respective dialog item, the dialog item can be made to fill out the available space entirely, i.e. it will grow to a size larger than the minimal size, or it will be moved to either the centre of the available space or to either side of the space. The following sample shows a listbox and three buttons in a horizontal box sizer; one button is centred, one is aligned at the top, one is aligned at the bottom:
A stretch factor: If a sizer contains more than one child and it is offered more space than its children and their borders need, the question arises how to distribute the surplus space among the children. For this purpose, a stretch factor may be assigned to each child, where the default value of 0 indicates that the child will not get more space than its requested minimum size. A value of more than zero is interpreted in relation to the sum of all stretch factors in the children of the respective sizer, i.e. if two children get a stretch factor of 1, they will get half the extra space each independent of whether one control has a minimal sizer inferior to the other or not. The following sample shows a dialog with three buttons, the first one has a stretch factor of 1 and thus gets stretched, whereas the other two buttons have a stretch factor of zero and keep their initial width:
You can hide controls contained in sizers the same way you would hide any control, using the wxWindow::Show method. However, wxSizer also offers a separate method which can tell the sizer not to consider that control in its size calculations. To hide a window using the sizer, call wxSizer::Show. You must then call Layout on the sizer to force an update.
wxBoxSizer can lay out its children either vertically or horizontally, depending on what flag is being used in its constructor. When using a vertical sizer, each child can be centered, aligned to the right or aligned to the left. Correspondingly, when using a horizontal sizer, each child can be centered, aligned at the bottom or aligned at the top. The stretch factor described in the last paragraph is used for the main orientation, i.e. when using a horizontal box sizer, the stretch factor determines how much the child can be stretched horizontally. The following sample shows the same dialog as in the last sample, only the box sizer is a vertical box sizer now:
wxGridSizer is a two-dimensional sizer. All children are given the same size, which is the minimal size required by the biggest child, in this case the text control in the left bottom border. Either the number of columns or the number or rows is fixed and the grid sizer will grow in the respectively other orientation if new children are added:
Another two-dimensional sizer derived from wxGridSizer. The width of each column and the height of each row are calculated individually according to the minimal requirements from the respectively biggest child. Additionally, columns and rows can be declared to be stretchable if the sizer is assigned a size different from the one it requested. The following sample shows the same dialog as the one above, but using a flex grid sizer:
It is the unique feature of a box sizer, that it can grow in both directions (height and width) but can distribute its growth in the main direction (horizontal for a row) unevenly among its children. In our example case, the vertical sizer is supposed to propagate all its height changes to only the text area, not to the button area. This is determined by the proportion parameter when adding a window (or another sizer) to a sizer. It is interpreted as a weight factor, i.e. it can be zero, indicating that the window may not be resized at all, or above zero. If several windows have a value above zero, the value is interpreted relative to the sum of all weight factors of the sizer, so when adding two windows with a value of 1, they will both get resized equally much and each half as much as the sizer owning them. Then what do we do when a column sizer changes its width? This behaviour is controlled by flags (the second parameter of the Add() function): Zero or no flag indicates that the window will preserve it is original size, wxGROW flag (same as wxEXPAND) forces the window to grow with the sizer, and wxSHAPED flag tells the window to change it is size proportionally, preserving original aspect ratio. When wxGROW flag is not used, the item can be aligned within available space. wxALIGN_LEFT, wxALIGN_TOP, wxALIGN_RIGHT, wxALIGN_BOTTOM, wxALIGN_CENTER_HORIZONTAL and wxALIGN_CENTER_VERTICAL do what they say. wxALIGN_CENTRE (same as wxALIGN_CENTER) is defined as (wxALIGN_CENTER_HORIZONTAL wxALIGN_CENTER_VERTICAL). Default alignment is wxALIGN_LEFT wxALIGN_TOP.
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