Hello, I've just checked in a branch labeled hbabcock in which I have been exploring how to make it easier (from the perspective of the device driver writer) to handle drawing your own text. It also attempts to factor out a lot of what is common from driver to driver in terms of text handling. The approach I've taken is to add 4 new functions to the PLplot dispatch table, expand the EscText structure slightly and add a new_unicode flag to the plot stream. Also, plcore.c has been changed to include these 4 functions and call them as appropriate from plP_text().
The functions are: plD_textbgn - Called at the start of the processing of a text string by plP_text(). The driver should do what ever it needs to do to get ready to process a string. plD_textchr - Called by plP_text(), specifies the next character to add to the text to be displayed. plD_textesc - Called by plP_text(), specifies whether to change font, or go to superscript or subscript at the current position in the string. plD_textend - Called by plP_text() at the end of the string. When this is called the driver should display the string (if it has not been doing this character by character). This approach is only implemented for the xcairo driver so if you are interested you should look at how these functions are defined in cairo.c and compare them to proc_str(). It should not effect any of the other drivers, except Qt which complains about my mangling of disptab.h. Does this seem like a reasonable approach? best, -Hazen ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
