luigi.themes.bitmaps

  Copyright (c) 1998 Paul Rademacher

struct Bitmap ;

GLUI Bitmap:
:load_from_array()



GLUI_Bitmap is a simple 2D texture map. It's used to represent small textures like checkboxes, arrows, etc. via the GLUI_StdBitmaps class.

void init_grayscale (ubyte* array);

Create bitmap from grayscale byte image

class StdBitmapSet ;

Keeps an array of Bitmap objects to represent all the images used in the UI: checkboxes, arrows, etc.

int width (int i);

Return the width (in pixels) of the n'th standard bitmap.

int height (int i);

Return the height (in pixels) of the n'th standard bitmap.

void draw (int i, Size p);

Draw the n'th standard bitmap (one of the enums listed in GLUI_StdBitmaps_Codes) at pixel corner (x,y).

ubyte[171] img_checkbox_off ;

Bitmaps for all GLUI images.

These were converted from original PPM images (mostly lost) with the tools/ppm2array program.

The images here are extracted in typical OpenGL bottom-to-top fashion.

FIXME:
don't use grayscale brightness here--this prevents people changing the background color. Instead, use a code indicating the underlying purpose of the pixel: 0 = shadows; outlines; UI elements (check boxes, arrows) 64 = disabled shadows and UI elements 128 = shadowing, disabled 192 = disabled white; background 255 = highlights; checkbox/radio background

I'm thinking the way to do this would be to have an enum { BG = 0, // Background shines through-- totally alpha transparent BS, // Background of scrollbar/spin box-- opaque gray SB, // Shadowed-black element-- strong alpha blend to black SD, // Shadowed-dark element-- weak alpha blend to black HL, // Highlight-light-- weak alpha blend to white HW, // Highlight-white-- strong alpha blend to white UB, // User-interface black-- arrows, checkboxes, radio buttons UW, // User-interface white-- backgrounds of checkboxes and radio buttons };

Orion Sky Lawlor, olawlor@acm.org @ This stuff was orignally in C++ and labelled LGPL, but Bill Baxter @ got Lawlor's permission to make it ZLIB via email on Aug 13, 2006