how to implement manually string splitting algorithm to fit it into the rectangle.(insert ... or \n where needed) i can calculate the length of the string in pixels.
i have standart std::string and rect struct containing left, top ,width ,height how to split string into words phrases that it size was not larger than rectangle of the given size
returns width of string in pixel
int GetStringWidth(std::string str)Ok, assuming left justification only, a very basic approach would be this:
You introduce two indices lineStart/lineEnd which mark the start and end of a possible text line in your input string. You then loop over all words in the input string, and for each word you check if it could be added to the current line without exceeding the rectangle width. If yes, increase lineEnd accordingly. If not, add the current fragment [lineStart..lineEnd] to the result, then reset lineStart/lineEnd to the start of the current word (which will be the first word on the next line).
There are a couple of border cases to consider, including (but likely not limited to) the possibility that a single word may be wider than the rectangle's width; and the very last line probably needs explicit handling as well.
Split the string (using the delimiter of your choice - I'm assuming you want it to be whitespace), then loop through the string tokens, printing each one until you can't fit it in the remaining space, then go to the next line and keep going.
You haven't given any background information, so it's impossible to answer your question. From what you've given me, just calculate the width of the rectangle, and set the length of the string to be the width of the rectangle minus some extra space for inset.
