Ncurses allows attributes and color to be applied to text output, including bold, underline, inverse text, and colors for both foreground and background. Special functions determine whether the terminal is capable of color. Color is applied by defining a color pair, then applying the color pair attribute to text.
- [Man] Each character position … on the Ncurses screen is occupied … by a character and an attribute. … In this exercise file, three common attributes … are activated for basic text. … Bold, reverse and underline. … The setup works the same for each attribute. … The attron function sets the text attribute, … which applies to any text output afterwards, … as you see done here in line ten with the bold attribute. … At line 13, the attroff function disables the attribute. … Two similar clusters of code activate two more attributes, … reverse text and underline. … I've already compiled and built the code, … so let's see what it does. … And here on the AnchorASUS screen, … you see the text output bold, reversed and underlined. … On some terminals, underlined text might appear blue. … Attributes can also apply color to text, … but only if the terminal window is configured for color. … In this exercise file, … the has_colors functions at line eight … returns true if the terminal window can output color text. …
Author
Dan Gookin
Released
10/1/2019- Finding, installing, and linking libraries
- Accessing and generating XML data
- Working with JSON
- Working with the libcurl library
- Text programming
- Reading, writing, and manipulating JPEG images
- Working with PNG images
Skill Level Advanced
Duration
Views
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Introduction
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Using the exercise files1m 2s
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Working with the code2m 45s
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1. Setup and Configuration
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Understanding libraries2m 50s
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Finding a C library2m 44s
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Installing a library4m 15s
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Liking a library: IDE4m 10s
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2. Data Structures
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Understanding XML2m 23s
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Accessing XML data3m 26s
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Generating XML data3m 57s
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Working with JSON2m 39s
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Accessing JSON data3m 10s
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Reading JSON data3m 46s
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Creating JSON output3m 35s
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3. Web Access
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Testing libcurl2m 3s
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Fetching a web page3m 47s
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Saving web data3m 31s
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Sending data2m 35s
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4. Text Programming
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Working with wide characters3m 19s
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Building an ncurses program2m 27s
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Controlling the text screen2m 32s
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Making color text2m 56s
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Exploring ncurses input4m 6s
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5. Computer Graphics
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Accessing a JPEG2m 31s
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Manipulating JPEG images3m 5s
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Working with PNG images3m 57s
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Modifying a PNG image2m 26s
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Conclusion
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Writing your own library4m 19s
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Next steps1m 17s
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Video: Making color text