The purpose of CropField is to get only selected part of the image. Which method does that? getImageResource() returns the whole image.
The second question is - is it possible to set a cropfield with a predetermined selected area? I've set minimal and maximal values of width and height to the same number so that selection area is always the same. However, user have to click on the cropfield in order to see it.
I have not used this addon.
The purpose of CropField is to get only selected part of the image
Actually, I think this statement is wrong; according to the description of the addon it
shows a single image and overlays it with capabilities to select, transform and move a cropping area within it.
i.e. it allows you to manipulate a selection area : it does not actually perform the cropping itself. I guess this could be done using serverside java (or an external tool).
For what it's worth, I agree that the name of the addon suggests that it does do the cropping itself.
As for setting a selection area, the javadoc of the CropField addon shows how to do this setValue(VCropSelection value)
/**
* Vaadin component that shows an image with an overlayed cropping
* functionality. The current selection can be set and get via
* setValue()/getValue() of {#link AbstractField}. The type of that value has to
* be {#link VCropSelection}. Usually, the selection will not be changed to a
* <i>null</i> value. Instead, it will be an empty selection (check with
* {#link VCropSelection#isEmpty()}).
*
* #author Eric Seckler
*/
Related
While using Delphi Seattle 10 and Steema TeeChart Pro VCL FMX 2016.18, I am looking to Highlight a Selection of a Line Graph (multiple series) in the way that Zooming allows / makes a square around a highlighted selection of a Line Graph to indicate which part of it to zoom into (as long as the onmousedown action is in progress).
The purpose of this would be to allow the selection to remain highlighted while the mouse is no longer being clicked, to potentially "Delete" the highlighted Data points. All I need this for is to obtain the (X0 Y0 X1 Y1) values to possibly obtain the CalcPosPoint(X) and remove all the points inside. The data is currently obtained through a Record Struct (Memory Mapped) file, and it will there for be used to set/check for a property "deleted" to indicate on the next redraw of the graph which rows to completely ignore and which to continue printing.
I hope to be able to do this (select from 1 chart), and have it simultaneously draw on multiple graphs. I have tried to look for an example of this feature through the use of TSelectorTool (FMXTee). One of the pages I found referring to such a tool is Interactive data point selection as well as Multiple selections with Selector Tool
And my second question has to do with TeeCharts directly. Where would I find fmx240.bpl as TeeChart_Pro_Firemonkey_Demo.exe requires this file in order to run? I did manage to copy vcl240.bpl from "Embarcadero\Studio\18.0\bin" and put it into "Embarcadero\Studio\17.0\bin"
[Edited]
I have managed to capture / create a sample code (MVCE) from which I can now select a portion and create a square around a particular sample of graph lines.
The control graph right now is the bottom graph (Chart5). If anyone is interested in seeing the code, I have put up a pastebin sample.
PasteBin Sample Code
And a TeeCharts.tar.gz is accessible to anyone who wishes to see a sample of the code, as well as the data sample.
filetolink.com Source Files
I no longer feel the need for mathematical equation to differentiate the top graphs from the bottom (because the bottom axes are automatic where as the top are defined). I intend to only use the space which is adherent to the visible space, and do not intend to extend in either direction (left or right). That means at this point the size of the graph does not matter, because once I over populate the charts above, the position in the bottom graph would become irrelevant, and therefor I do not intend to use the bottom chart.
The next step is to save the positions of the boxes so that they can reappear when the graph is shift from left (past data) to the right (live data). And then uses the buttons above to make the appropriate action to the graphs.
I would like to know what way would be the most sufficient way to record the positions of the rectangles, so when the chart is shifted (via the ScrollBar1), the rectangles are moving with the direction of the scrollbar. But I'm sure I can achieve that.
I think I have found a solution. The red squares are only prevalent for the visual aspect, they can be drawn on, I don't need to do anything special with each chart, as I already know what the X0..Y1 parameters are, they are known from the initial chart. The problem h/e has to do with the initial chart. As long as the screens are all full, I can zoom in correctly w/ alignment with on all the charts (ZoomRect/Rectf(X0..Y1))
But what kind of equation would it take to adjust the charts that are not in the same zoom / max / min when the Chart5.Axes.Bottom.Automatic = True?
From there I just simply have to disable the immediate zoom feature, and allow buttons to become functional, to decide what the next course of action would be.
I am trying to allow the user to select an appropriate paper size for their printer within my own print settings dialog. Does anyone know a workable solution - preferably cross platform but otherwise OSX.
If I use a TPageSetupDialog then when executed it produces an error in the PASever window of Invalidpmobject although the dialog shows but doesn't seem to affect the current printers paper size. There doesn't seem to be any proerties to see what the user selected either.
I need to set the paper size without actually printing as the user needs to be able to adjust things with the new paper size first.
I finally figured out the problem so here is the solution for anyone else with the problem:
Use TPageSetupDialog but you must set valid pagewidth and pageheight values for the current printer before calling it - otherwise you get an error reported in PAServer window and the printer selection box will be set to "any printer" instead of the current printer name.
Unfortunately you cannot derive the paper size directly from the printer pagewidth and resolution because it reports printable area not paper size. So I set a default of A4 whenever the user chooses another printer. I guess you could set the nearest standard paper size to the calculated value from printer.pagewidth/printer.activeprinter.activedpi.x if you want to take care of printers that do not support A4.
The other point to note is that the default page sizes in the TPageSetupDialog component are wrong. Set the units to mm and use width 210000 and height 297000 (note 10 times bigger than the default values) for A4 size that most printers should support.
Does anyone know if you are able to set the colour of the text for a vertex label in JUNG.
I'm using the Visualisation Viewer and can seem to be able to set the colour for everything else.
vv = new VisualizationViewer<String,Integer>(treeLayout, new Dimension(410,557));
Transformer<String,Paint> vertexPaint = new Transformer<String,Paint>() {
public Paint transform(String b) {
return Color.orange;
}
};
vv.setBackground(Color.white);
vv.getRenderContext().setEdgeShapeTransformer(new EdgeShape.Line());
vv.getRenderContext().setVertexLabelTransformer(new ToStringLabeller());
vv.getRenderContext().setVertexFillPaintTransformer(vertexPaint);
//vv.getRenderContext().setVertexFontTransformer(vertexFont);
// add a listener for ToolTips
vv.setVertexToolTipTransformer(new ToStringLabeller());
vv.getRenderContext().setArrowFillPaintTransformer(new ConstantTransformer(Color.WHITE));
The DefaultVertexLabelRenderer and the DefaultEdgeLabelRenderer extend JLabel (it is similar to the way cell renderers work in JTable and JTree).
By default, it uses the foreground color of the VisualizationViewer to draw the label text.
vv.setForegroundColor(Color.red);
will make all of your labels red.
This approach is less expensive than making all of the labels parse HTML.
Sorry that the solution is so obscure.
Additionally, since the default renderers extend JLabel, the use of html is the same as it is for JLabel. There are good online resources to show examples of using html with javax.swing. What's missing is documentation to make the connection between using html in JUNG and using html in javax.swing.
You can use HTML in the label to specify the color; an example is here: https://stackoverflow.com/a/2017576/664856
In your case,
vv.getRenderContext().setVertexLabelRenderer(new DefaultVertexLabelRenderer(Color.RED));
should work (if you wanted selected vertex to be Red). I tested it myself. This applies to the selected vertex.
Upon inspection of code, I would have to believe that the link I provided does correctly work for those vertices which are not selected, but I did not actually try implementing that link.
I'm using PHP to generate docx documents from a database. The generated document contains column charts which have labels attached (i.e. user shapes containing textboxes). In an attempt to get the textboxes to accommodate and display all of the text (i.e. it shouldn't be necessary for the user to resize a textbox to see all the text) my code calculates how many characters will fit into 3cm, adds linefeeds to the string as required and tells me how many lines of text are needed. I have:
<a:xfrm xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
<a:off x="1638276" y="1676399"/>
<a:ext cx="1257325" cy="'.(252000 * $labelLeftLines).'"/>
</a:xfrm>
which I believe should give me a text box around 3.5cm wide (extra .5 for the internal padding) and a height of .7cm multiplied by whatever is the value of $labelLeftLines. However, the text box always turns up as 3.cm wide by .86cm high, which only ever displays one line of text.
If I add in 'autofit':
<a:bodyPr xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" vertOverflow="clip" wrap="square" rtlCol="0">
<a:spAutoFit/>
</a:bodyPr>
the generated file looks just the same, though, when I right click on the textbox to inspect the properties, 'autofit' is indeed applied. I have to uncheck it and recheck it to make it affect the textbox.
Any openXML gurus out there?
Hmm, some random floundering around revealed that the values I need to manipulate are here:
<cdr:relSizeAnchor xmlns:cdr="http://schemas.openxmlformats.org/drawingml/2006/chartDrawing">
<cdr:from>
<cdr:x>0.47</cdr:x>
<cdr:y>0.75</cdr:y>
</cdr:from>
<cdr:to>
<cdr:x>0.67</cdr:x>
<cdr:y>1</cdr:y>
</cdr:to>
Changing those values does actually change the size of the texbox, though I haven't a clue what units are being used. From 0.75 to 1 produces a height of 1.43cm.
One day I'll maybe be able to find my way around the doucmentation.
I'm working on a site prototype that has many rollover images in the navigation. Each image is unique, but the rollover and rollout code is identical. I'm trying to create a single symbol that can be used for all of the rollovers, but need some help figuring this out, as it will significantly speed up my work.
I think the pseudocode would work like this
Create a symbol that contains a default rollover image.
In the symbol, add the rollover and rollout code. This adjusts transparency from 0 -> 100 and back.
Create instances of the symbol over each item in the nav.
For each instance, set a variable containing the name of the rollover image to be used.
In that symbol instance, get the variable value.
In that symbol instance, use the image name in the variable to replace the default image.
Question: How do I make step 4-6 work? I have 1-3 working smoothly.
Update: I have #6 solved
Images are all managed by the CSS background-image property rather than the old-school <img src=...>. So to set an image for an element, the syntax is:
$(sym.lookupSelector("[ElementName]")).css('background-image', [image]);
And there's a second part, which is getting [image] right.
Use the default relative URL for Edge images: images/[image]
Use standard syntax for CSS background-image: url(images/[image])
P.S. My last dev work was waaaaay back with Director, PHP and ColdFusion. I still get basic principles such as using functions, objects, instances, inheritance etc, but the language has changed. And I have very very little experience with the DOM.
Appendix: How I'm Doing This Manually
There's a background image of the nav showing all of the unselected states
Each item in the nav has a corresponding rollover image, in a series of elements layered on top of nav element. Each rollover has opacity initially set to 0%.
Each image element has rollover, rollout and click triggers. Rollover and rollout triggers are identical for each. There's also a little more code with rollout that provides a quick fade. This means lots of copying identical code. I hate to think about having to change any part of that code.
I came to the same conclusions as yours.
Steps 4-5 I did this way: when I create the symbol instance I give it a special name, like "button_image1".
Then in the code you can check this property doing:
var symbolElement = sym.getSymbolElement();
var id = symbolElement.attr("id")
var tokens = id.split("_");
var image = tokens[1];
And set the right image as background.
You can put this code on the creation_complete event of the symbol.