While I'm typing, I want to detect the incoming new line, to make my image grow up according to content inset of my UITextView frame
Related
I have a QDockWidget with a QGroupBox as the top widget, with QVBoxLayout applied. This contains a QChartView and a QLabel.
The QLabel contains a text composed of several lines of different length.
First, I would like to have the QChartView the same width and height as the QLabel.
Second, as the content of the QLabel is updated by setText(...) in a Slot method, its content changes in height and width. So I would like to update the width and height of the QChartView above it.
For the moment, I only achieved to grow the entire DockPanel to accomodate longer and wider QLabel content, but not to shrink back when this content is narrower and less wide...
I did play with a lot of things, without real success (here a snippet of the Slot method that updates the QLabel content...):
self.fkChartView.hide()
self.pPDetailsLabel.hide()
self.pPDetailsLabel.parent().hide()
self.pPDetailsLabel.setText(self.canvas.grayScottModel.getPearsonPatternDescription(specie=type))
self.pPDetailsLabel.updateGeometry()
self.pPDetailsLabel.parent().updateGeometry()
self.pPDetailsLabel.parent().update()
self.pPDetailsDock.updateGeometry()
self.pPDetailsDock.update()
self.pPDetailsLabel.show()
self.pPDetailsLabel.parent().show()
# print(self.pPDetailsLabel.sizeHint())
self.fkChartView.setMinimumHeight(self.pPDetailsLabel.size().width())
self.fkChartView.setMaximumHeight(self.pPDetailsLabel.size().width())
self.fkChartView.setMinimumWidth(self.pPDetailsLabel.size().width())
self.fkChartView.setMaximumWidth(self.pPDetailsLabel.size().width())
self.fkChartView.updateGeometry()
self.fkChartView.show()
self.fkChartView.updateGeometry()
self.fkChartView.update()
I tried to hide the widgets, so they forget their sizes and/or sizeHint (not sure).
I tried a few updateGeometry() and update() too, but it does not seem to help.
An idea, anyone?
I had it working as intended in the end by doing this in the slot method that updates the content of the QLabel:
self.fkChartView.hide()
self.pPDetailsLabel.setText(self.canvas.grayScottModel.getPearsonPatternDescription(specie=type))
self.pPDetailsLabel.adjustSize()
self.pPDetailsLabel.parent().adjustSize()
# Sets the dimensions of the chart folowing the label width
self.fkChartView.setMinimumHeight(self.pPDetailsLabel.size().width())
self.fkChartView.setMaximumHeight(self.pPDetailsLabel.size().width())
self.fkChartView.setMinimumWidth(self.pPDetailsLabel.size().width())
self.fkChartView.setMaximumWidth(self.pPDetailsLabel.size().width())
self.fkChartView.adjustSize()
self.fkChartView.show()
self.pPDetailsDock.adjustSize()
So I first hide the QChartView, so its dimensions do not interfere,
then all the magic happens thanks to the adjustSize() call. I do this on the QLabel after its content has been updated,
then on its parent (the top QGroupBox in my QDockWidget).
The QChartView still hidden, I force its dimensions,
then show it and
finally adjust the size of the QDockWidget.
It does precisely what I want:
if text is broader, the chart expands but stays square,
if text is narrower, chart shrinks, but stays square.
Total height of the dock adjusts also to fit, without staying the longer and longer it had to be to accomodate for a big former QLabel content.
My current vim setup sticks the first line all the way to the top, so that all the characters are touching the edge. Is there a way to to add a small amount of padding to the top so that the text doesn't touch the top?
Currently it looks as like:
I'm looking for a cross-platform rich text widget that supports non-trivial markup including the following, and I wonder if Tk's text widget can be extended to do them:
set text background color
draw lines over and under text
draw borders around text
decorate content by overlaying lines and shapes (e.g., filled circles)
indicate items in a gutter
To give you an idea, look at the middle pane here:
I read a little about tags, but they seem to be limited to the basics like font, color, etc. I also read about drawing text on the canvas widget, but it looks like standard text editor-like text selection, flow, etc. would be lost.
Thanks very much.
In short, you can only do what you've read in the documentation (assuming you've read authoritative documentation).
Specifically, the text widget does not do all that you asked. You cannot do the following:
draw lines over and under text. You can use custom fonts with the overstrike and underline attributes turned on but there's no way to add lines over a widget, and you have no control on the visual attributes of the overstrike or underline
decorate content by overlaying lines and shapes (e.g., filled circles)
You can set text background and foreground colors, draw borders around the text, and put items in a gutter. For the latter you would need to use a canvas as the gutter.
Note that if you use a canvas rather than a text widget you can do all of those things (read: the text items of the canvas can be editable), but it would require a large amount of work to implement all of the bindings necessary to use it as an editor. For more information on this approach, see http://effbot.org/zone/editing-canvas-text-items.htm
I would like to implement red lines moving oh H/V rulers similar to what I see in windows paint brush (8.1) indicating current mouse position. See the example (red line at 560):
What would be the best way to do it. Direct2D Animation? layers? any other simple trick? The thing here is of cause doing it efficiently without repainting the whole area on mouse move.
I currently using MFC/direct2d so I paint myself the area with field and rulers inside the view, so I have full control on graphics here.
There are many ways to attack this problem. The simplest is to rely on your OnPaint function to paint the line in a location based on a member variable. In your OnMouseMove handler, call InvalidateRect on the current location of the line based on the saved variable, update the variable, and call InvalidateRect a second time for the new line position.
The BeginPaint call that is generated in the CPaintDC constructor will set a clipping region based on the invalidation rectangles you provided. Even if your OnPaint tries to paint the entire window, only those parts that have been invalidated will be redrawn. If this is too inefficient, you can cache the ruler in a bitmap and use GetClipBox to determine which part of the bitmap to blit to the screen.
Is there any program that can convert a file into an animated gif by taking the bytes (whatever I see on an editor is seen) and producing them on frames? Im trying to change a large script I wrote into an image so that if I run it, it looks like as if the code is scrolling. I would use photoshop, if I knew how to use it. Even then, the code is really big, so I dont want to be doing it frame by frame.
Whatever you see on the editor screen is ... a screenfull, so why not a screen capture program like http://www.faststone.org/FSCaptureDetail.htm
However, I suspect that you want to convert the entire file to a gif, since you talk of scrolling. Is that so?
If so, be aware that animated GIFs are limited to 8 frames, so you might want to convert to another movie format.
You could, for instance, Google for "text to MPEG". If nothing does it directly, get something that adds subtitles & make your video a solid white background *or match your webpage).
Maybe simpler is something like this ...
A Scrolling Text Applet - Now Free. - Provide an animated look and feel to your web pages. Scrolling Text is a Java applet that will automatically size itself to the available area given to it by the HTML form via the WIDTH and HEIGHT properties of the APPLET tag. There are many configurable features of this applet including title, colors, font size and style, border width and color, graphics, background images etc.
Configurable parameters including;
Background Color - Define your desired background color
Title - If you want a stationary title then include this parameter
Font Size and Style - All text can have it's own Font size and style
Text Color - Specify the color of the text with this one
Border Width and Color - If you require a border then define it with these 2 parameters
Scroll Speed - Customise the Scroll Speed
Display Time - Vary the Display time of each page
This applet is easy to implement and configure and along with the example and help files you should have no trouble implementing your own customised Scrolling Text in your web pages. No understanding of java programming is required, everything is adjusted by parameters in the HTML tags.
Now FREE.
+1 for an interesting question.