112 lines
3.2 KiB
C++
112 lines
3.2 KiB
C++
//
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// Engraved label drawing routines for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2011 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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// https://www.fltk.org/COPYING.php
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//
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// Please see the following page on how to report bugs and issues:
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//
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// https://www.fltk.org/bugs.php
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//
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// Drawing code for XForms style engraved & embossed labels
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#include <FL/Fl.H>
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#include <FL/Fl_Widget.H>
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#include <FL/fl_draw.H>
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// data[] is dx, dy, color triples
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static void innards(const char *str, int len, int X, int Y, const int data[][3], int n)
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{
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Fl_Color c = fl_color();
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for (int i = 0; i < n; i++) {
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fl_color((Fl_Color)(i < n-1 ? data[i][2] : c));
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fl_draw(str, len, X+data[i][0], Y+data[i][1]);
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}
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fl_color(c);
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}
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static void dispatch(const Fl_Label* o,
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int x, int y, int w, int h, Fl_Align align,
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void (*callthis)(const char*,int,int,int))
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{
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if ((!o->value || !*(o->value)) && !o->image) return;
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if (w && h && !fl_not_clipped(x, y, w, h) && (align & FL_ALIGN_INSIDE)) return;
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if (align & FL_ALIGN_CLIP)
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fl_push_clip(x, y, w, h);
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fl_font(o->font, o->size);
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fl_color((Fl_Color)o->color);
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fl_draw(o->value, x, y, w, h, align, callthis, o->image, 1, o->spacing);
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if (align & FL_ALIGN_CLIP)
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fl_pop_clip();
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}
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// Draw text with shadow
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static void fl_shadow_label_draw(const char *str, int len, int x, int y) {
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static const int data[2][3] = {{2,2,FL_DARK3},{0,0,0}};
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innards(str, len, x, y, data, 2);
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}
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// Implement shadowed text label type
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static void fl_shadow_label(
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const Fl_Label* o, int X, int Y, int W, int H, Fl_Align align)
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{
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dispatch(o, X, Y, W, H, align, fl_shadow_label_draw);
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}
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// Draw text engraved
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static void fl_engraved_label_draw(const char *str, int len, int x, int y) {
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static const int data[7][3] = {
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{1,0,FL_LIGHT3},{1,1,FL_LIGHT3},{0,1,FL_LIGHT3},
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{-1,0,FL_DARK3},{-1,-1,FL_DARK3},{0,-1,FL_DARK3},
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{0,0,0}};
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innards(str, len, x, y, data, 7);
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}
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// Implement engraved text label type
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static void fl_engraved_label(
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const Fl_Label* o, int X, int Y, int W, int H, Fl_Align align)
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{
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dispatch(o, X, Y, W, H, align, fl_engraved_label_draw);
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}
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// Draw text embossed
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static void fl_embossed_label_draw(const char *str, int len, int x, int y) {
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static const int data[7][3] = {
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{-1,0,FL_LIGHT3},{-1,-1,FL_LIGHT3},{0,-1,FL_LIGHT3},
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{1,0,FL_DARK3},{1,1,FL_DARK3},{0,1,FL_DARK3},
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{0,0,0}};
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innards(str, len, x, y, data, 7);
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}
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// Implement embossed text label type
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static void fl_embossed_label(
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const Fl_Label* o, int X, int Y, int W, int H, Fl_Align align)
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{
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dispatch(o, X, Y, W, H, align, fl_embossed_label_draw);
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}
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Fl_Labeltype fl_define_FL_SHADOW_LABEL() {
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Fl::set_labeltype(_FL_SHADOW_LABEL, fl_shadow_label, 0);
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return _FL_SHADOW_LABEL;
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}
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Fl_Labeltype fl_define_FL_ENGRAVED_LABEL() {
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Fl::set_labeltype(_FL_ENGRAVED_LABEL, fl_engraved_label, 0);
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return _FL_ENGRAVED_LABEL;
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}
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Fl_Labeltype fl_define_FL_EMBOSSED_LABEL() {
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Fl::set_labeltype(_FL_EMBOSSED_LABEL, fl_embossed_label, 0);
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return _FL_EMBOSSED_LABEL;
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}
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