mirror of https://github.com/fltk/fltk
79 lines
3.0 KiB
C++
79 lines
3.0 KiB
C++
//
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// "$Id$"
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//
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// Multi-label header file for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2015 by Bill Spitzak and others.
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//
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// This library is free software. Distribution and use rights are outlined in
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// the file "COPYING" which should have been included with this file. If this
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// file is missing or damaged, see the license at:
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//
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// http://www.fltk.org/COPYING.php
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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#ifndef Fl_Multi_Label_H
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#define Fl_Multi_Label_H
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class Fl_Widget;
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struct Fl_Menu_Item;
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/** This struct allows multiple labels to be added to objects that might normally have only one label.
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This struct allows a mixed text and/or graphics label to be applied to an object that
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would normally only have a single (usually text only) label.
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Most regular FLTK widgets now support the ability to associate both images and text
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with a label but some special cases, notably the non-widget Fl_Menu_Item objects, do not.
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Fl_Multi_Label may be used to create menu items that have an icon and text, which would
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not normally be possible for an Fl_Menu_Item.
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For example, Fl_Multi_Label is used in the New->Code submenu in fluid, and others.
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Each Fl_Multi_Label holds two elements, labela and labelb; each may hold either a
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text label (const char*) or an image (Fl_Image*). When displayed, labela is drawn first
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and labelb is drawn immediately to its right.
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More complex labels might be constructed by setting labelb as another Fl_Multi_Label and
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thus chaining up a series of label elements.
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When assigning a label element to one of labela or labelb, they should be explicitly cast
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to (const char*) if they are not of that type already.
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\see Fl_Label and Fl_Labeltype
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*/
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struct FL_EXPORT Fl_Multi_Label {
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/** Holds the "leftmost" of the two elements in the composite label.
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Typically this would be assigned either a text string (const char*),
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a (Fl_Image*) or a (Fl_Multi_Label*). */
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const char* labela;
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/** Holds the "rightmost" of the two elements in the composite label.
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Typically this would be assigned either a text string (const char*),
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a (Fl_Image*) or a (Fl_Multi_Label*). */
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const char* labelb;
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/** Holds the "type" of labela.
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Typically this is set to FL_NORMAL_LABEL for a text label,
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_FL_IMAGE_LABEL for an image (based on Fl_image) or _FL_MULTI_LABEL
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if "chaining" multiple Fl_Multi_Label elements together. */
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uchar typea;
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/** Holds the "type" of labelb.
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Typically this is set to FL_NORMAL_LABEL for a text label,
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_FL_IMAGE_LABEL for an image (based on Fl_image) or _FL_MULTI_LABEL
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if "chaining" multiple Fl_Multi_Label elements together. */
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uchar typeb;
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/** This method is used to associate a Fl_Multi_Label with a Fl_Widget. */
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void label(Fl_Widget*);
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/** This method is used to associate a Fl_Multi_Label with a Fl_Menu_Item. */
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void label(Fl_Menu_Item*);
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};
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#endif
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//
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// End of "$Id$".
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//
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