I want the outline of text with the standard Windows font "Bahnschrift". I tried to convert it with "Path->Object to Path" and then setting fill to X and stroke to black, but looks like the font is constructed with separate polygons for each letter. See this example:
Top is Bahnschrift, and bottom is Arial which works fine.
Is it possible to calculate somehow automatically the outline of the top text, without intersections, and without doing it all manually for all the letters? And including the right outline for letters with holes, like the "e"?
Some letters are even kind of twisted internally, looks pretty bad:
So I guess an algorithm to detect if it is a real hole, or if it is a hole from such twists and to ignore it, could be difficult.
Select the complete character in question. Then select from the drop down menu:
Path intersection followed by path union. This fixes the character font outline problem where the outline crosses into the body of the character.
Related
Using wxWidgets wxStyledTextCtrl I cannot find a way of having the color behind the text to be anything but white. I can change the editor's background but typing in text results in black text with a white background behind the characters.
Searches and review of Scintilla's and wxWidgets docs has revealed nothing to me yet. Any suggestions? (C++, Linux Mint)
update #1: After poking around in the wxWidget source, as a test, I modified in PlatWX.cpp the SurfaceImpl::DrawTextTransparent. I added a call to set brush colour and changed hdc->SetBackgroundMode( wxBRUSHSTYLE_TRANSPARENT ) to wxBRUSHSTYLE_SOLID.
These seems to work reasonably well. However, there are added problems with whitespace. The first being the settings for white space coloring seem to be ignored. The second is a carriage return always leaves a white blank space and multiple spaces having a growing white bow (as on a ship) when holding the spacebar down.
For university, we need to make a game in Unity that is controlled with an Arduino. My idea was a hacking game where the Arduino acts as the 'hacking device' when hacking something in the game. The arduino would have a screen and on that screen would be a basic command-line interface that lets me input simple commands to 'hack' but I've been having trouble regarding text and clearing it.
I've been able to use unity to send typed characters to the display as-well as a backspace function (pressing backspace would remove last character in the string)
I first had issue with clearing all the text when writing (calling tft.print doesn't clear any previous text). I was using fillScreen which was slow. I found out setTextColor had a second argument that let me just set all certain colored text to a different color. Setting it to black would essentially clear it.
This made it update pretty much instantly when writing to the screen but I now had a new issue, backspace would no longer would.
My understand is that when removing the character, it's color won't be updated when calling setTextColor leaving it on the screen until a restart/fillScreen is called.
I'm not really sure how to solve this and all google searches turn up little to no help.
Here's my code for updating the text:
void updateString(char c){
tft.setTextColor(WHITE,BLACK);
if(c!='<'){
//Add new character to end of string
str.concat(String(c));
}
else if(c=='<' && str.length()>2){
//Remove last character in string
str.remove(str.length()-1);
}
//Set cursor back to 0,0
tft.setCursor(0,0);
//Display text
tft.print(str);
}
I'd appreciate any help.
Maybe, use a similar function to tft.clear() each time you refresh the screen or you can draw a filled square of the background on the text so it looks like it has been erased then you rewrite the text.
Sounds like you are using proportionally-spaced fonts instead of the original classic fonts that ships with Adafruit_GFX. Historically, when using the default classic fonts one could set the background color option of the text to the same color as the background of the screen (usually black). This would overwrite the old screen contents with new data and work because the characters using the classic fonts are a uniform size. When using proportionally-spaced fonts, the background color option for the font is disabled by design.
This was presumably because of memory requirements and speed on slower AVR's. Regardless, when using proportionally-spaced fonts the background color feature won't work due to non-uniform sized characters overlapping the same regions as adjacent characters.
There are two work-arounds to this. Adafruit says in order to replace previously drawn text when using custom fonts you can either:
Use getTextBounds() to determine the smallest rectangle that encloses a
string and then erase that area using fillRect() prior to drawing
the new text. OR
Create an offscreen bitmap using GFXcanvas1 for a fixed size area,
draw the text in the GFXcanvas1 object and then copy to the screen
using drawBitmap().
Note that options 1 & 2 above are mutually exclusive. The second method requires more memory. The first method isn't perfect and produces some small amount of flicker, but is in general acceptable if coded carefully.
I hope that I have understood what the nature of your problem is and answered it in a satisfactory manner. If nothing else, at least now you know why custom font's will not work with the so called background color feature that works with the original 'classic' Adafruit fonts.
Nikki Cooper
Difficulty creating reverse "R" in powerpoint, i.e. as in
These directions aren't working, https://support.office.com/en-us/article/Rotate-or-flip-a-picture-shape-text-box-or-WordArt-47e482be-dce5-40ba-815f-c0aea4fb7ea7
This is what I tried:
I'm using a Dutch office version. Menu names may not be exactly correct, but they should be able to direct you where you need to be.
Go to format
Go to Text effects
Select 3D rotation
Select Options for 3D rotation
Change the X axis to 180
This actually rotates the text, rather than the text box.
You cannot flip horizontally a character, in powerpoint, however, you can flip a shape/vector drawing.
So you need to convert your wordart character to a shape.
In order to do that, you can play with the merge/union/combine/fragment functions :
draw a box on top of your wordart
put it behind
select both the R wordart and the box
menu Format -> merge, then try options like intersect
That will create a shape from your wordart and the box, that you can flip horizontally.
If you need just reverse version of 'R' maybe you can use cyrillic letter 'Я' (U+042F). In unicode it's called 'CYRILLIC CAPITAL LETTER YA'
I am creating a custom single line edit control, with a custom font in win32 api on windows 7, the font is not a fixed width font, and I need to move caret according to the mouse click, The edit control is not empty and if I know the horizontal position of the mouse click within the window, how do I calculate the number of characters after which I need to move caret to ?
I really am out of ideas, if it was a fixed width font, I would have divided the horizontal mouse click position with average character width, that would have been simpler, doing the same with not a fixed width font, is prone to errors.
Given that it's a single-line control, you probably don't plan on working with immensely long input (at least normally). That being the case, one possibility would be to just store the character positions in an array (or vector, etc.) Then you can use (for example) a binary search in that array to find character positions. Of course, you can do the same even for longer strings--though it can increase storage requirements quite a bit.
This is a familiar problem. You are in essence trying to do hit testing on text and for that you need the location on the screen of each character of the text.
My preferred strategy is to calculate an array of RECT, one for each character of displayed text. The array needs to be updated when text is added or deleted, but it easily handles single or multiple lines. The function GetCharWidth32 retrieves all the widths for a string of text in a particular font selected into a DC. For single line one call is enough, and calculating the array of RECTs is simple. It's not much harder to do multiline.
Handle the mouse down message, loop through the array and find the right character. A brute force search is plenty fast enough.
This method is simple and easily generalises to a range of similar problems.
I often use a TPanel or TGroupBox to group my form controls.
Now I need to draw just a straight line like the border of a Panel or GroupBox.
How do I do this on LAZARUS?
Thanks in advance!
Note: The technique must work on both Linux and Windows
As an optical line separator you should use either the TBevel component with Shape property set to one of the following values bsTopLine, bsBottomLine, bsLeftLine or bsRightLine depending on which line you currently need and resize it to a smaller size (in your case you can use bsTopLine or bsBottomLine and resize the bevel vertically):
Or you can use a special component called TDividerBevel which except the single line adds to this optical divider also a caption:
Here's what I've finally done but I'm not sure if this is the RIGHT way so I won't accept my answer. If there's someone else who can point out any issues with this, please let me know. I found this pretty straightforward as well :)
Place a TGroupBox on the form.
Leave the Caption property blank. Now it should look like a panel with only borders.
Use the mouse and drag the bottom border towards the top. Now it looks like a line.
Well, I personally think this method is NOT efficient as it would take up more memory space than just a real straight line. Anyway, so far it seems to work for me :)
Here's the screenshot - look towards the bottom (just above the last text box). The only issues is that on the sides of the line, it shows the lines bending. I think I should set the properties correctly than dragging with the mouse.