1 | // |
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2 | // "$Id: color_chooser.cxx 7903 2010-11-28 21:06:39Z matt $" |
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3 | // |
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4 | // Color chooser test program for the Fast Light Tool Kit (FLTK). |
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5 | // |
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6 | // Copyright 1998-2010 by Bill Spitzak and others. |
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7 | // |
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8 | // This library is free software; you can redistribute it and/or |
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9 | // modify it under the terms of the GNU Library General Public |
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10 | // License as published by the Free Software Foundation; either |
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11 | // version 2 of the License, or (at your option) any later version. |
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12 | // |
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13 | // This library is distributed in the hope that it will be useful, |
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14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | // Library General Public License for more details. |
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17 | // |
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18 | // You should have received a copy of the GNU Library General Public |
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19 | // License along with this library; if not, write to the Free Software |
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20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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21 | // USA. |
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22 | // |
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23 | // Please report all bugs and problems on the following page: |
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24 | // |
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25 | // http://www.fltk.org/str.php |
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26 | // |
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27 | |
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28 | #include <FL/Fl.H> |
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29 | #include <FL/Fl_Window.H> |
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30 | #include <FL/Fl_Box.H> |
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31 | #include <FL/Fl_Button.H> |
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32 | #include <FL/fl_show_colormap.H> |
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33 | #include <FL/Fl_Color_Chooser.H> |
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34 | #include <FL/Fl_Image.H> |
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35 | #include <FL/x.H> |
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36 | #include <FL/fl_draw.H> |
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37 | |
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38 | #include <stdlib.h> |
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39 | #include <stdio.h> |
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40 | #if !defined(WIN32) && !defined(__APPLE__) |
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41 | #include "list_visuals.cxx" |
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42 | #endif |
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43 | |
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44 | int width = 75; |
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45 | int height = 75; |
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46 | uchar *image; |
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47 | |
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48 | void make_image() { |
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49 | image = new uchar[3*width*height]; |
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50 | uchar *p = image; |
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51 | for (int y = 0; y < height; y++) { |
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52 | double Y = double(y)/(height-1); |
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53 | for (int x = 0; x < width; x++) { |
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54 | double X = double(x)/(width-1); |
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55 | *p++ = uchar(255*((1-X)*(1-Y))); // red in upper-left |
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56 | *p++ = uchar(255*((1-X)*Y)); // green in lower-left |
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57 | *p++ = uchar(255*(X*Y)); // blue in lower-right |
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58 | } |
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59 | } |
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60 | } |
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61 | |
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62 | class Pens : public Fl_Box { |
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63 | void draw(); |
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64 | public: |
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65 | Pens(int X, int Y, int W, int H, const char* L) |
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66 | : Fl_Box(X,Y,W,H,L) {} |
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67 | }; |
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68 | void Pens::draw() { |
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69 | // use every color in the gray ramp: |
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70 | for (int i = 0; i < 3*8; i++) { |
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71 | fl_color((Fl_Color)(FL_GRAY_RAMP+i)); |
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72 | fl_line(x()+i, y(), x()+i, y()+h()); |
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73 | } |
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74 | } |
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75 | |
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76 | Fl_Color c = FL_GRAY; |
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77 | #define fullcolor_cell (FL_FREE_COLOR) |
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78 | |
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79 | void cb1(Fl_Widget *, void *v) { |
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80 | c = fl_show_colormap(c); |
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81 | Fl_Box* b = (Fl_Box*)v; |
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82 | b->color(c); |
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83 | b->parent()->redraw(); |
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84 | } |
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85 | |
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86 | void cb2(Fl_Widget *, void *v) { |
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87 | uchar r,g,b; |
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88 | Fl::get_color(c,r,g,b); |
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89 | if (!fl_color_chooser("New color:",r,g,b,3)) return; |
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90 | c = fullcolor_cell; |
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91 | Fl::set_color(fullcolor_cell,r,g,b); |
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92 | Fl_Box* bx = (Fl_Box*)v; |
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93 | bx->color(fullcolor_cell); |
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94 | bx->parent()->redraw(); |
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95 | } |
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96 | |
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97 | int main(int argc, char ** argv) { |
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98 | Fl::set_color(fullcolor_cell,145,159,170); |
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99 | Fl_Window window(400,400); |
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100 | Fl_Box box(50,50,300,300); |
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101 | box.box(FL_THIN_DOWN_BOX); |
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102 | c = fullcolor_cell; |
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103 | box.color(c); |
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104 | Fl_Button b1(140,120,120,30,"fl_show_colormap"); |
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105 | b1.callback(cb1,&box); |
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106 | Fl_Button b2(140,160,120,30,"fl_choose_color"); |
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107 | b2.callback(cb2,&box); |
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108 | Fl_Box image_box(140,200,120,120,0); |
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109 | make_image(); |
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110 | (new Fl_RGB_Image(image, width, height))->label(&image_box); |
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111 | Fl_Box b(140,320,120,0,"Example of fl_draw_image()"); |
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112 | Pens p(80,200,3*8,120,"lines"); |
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113 | p.align(FL_ALIGN_TOP); |
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114 | int i = 1; |
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115 | if (!Fl::args(argc,argv,i) || i < argc-1) { |
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116 | printf("usage: %s <switches> visual-number\n" |
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117 | " - : default visual\n" |
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118 | " r : call Fl::visual(FL_RGB)\n" |
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119 | " c : call Fl::own_colormap()\n",argv[0]); |
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120 | #if !defined(WIN32) && !defined(__APPLE__) |
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121 | printf(" # : use this visual with an empty colormap:\n"); |
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122 | list_visuals(); |
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123 | #endif |
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124 | puts(Fl::help); |
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125 | exit(1); |
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126 | } |
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127 | if (i!=argc) { |
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128 | if (argv[i][0] == 'r') { |
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129 | if (!Fl::visual(FL_RGB)) printf("Fl::visual(FL_RGB) returned false.\n"); |
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130 | } else if (argv[i][0] == 'c') { |
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131 | Fl::own_colormap(); |
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132 | } else if (argv[i][0] != '-') { |
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133 | #if !defined(WIN32) && !defined(__APPLE__) |
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134 | int visid = atoi(argv[i]); |
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135 | fl_open_display(); |
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136 | XVisualInfo templt; int num; |
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137 | templt.visualid = visid; |
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138 | fl_visual = XGetVisualInfo(fl_display, VisualIDMask, &templt, &num); |
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139 | if (!fl_visual) Fl::fatal("No visual with id %d",visid); |
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140 | fl_colormap = XCreateColormap(fl_display, RootWindow(fl_display,fl_screen), |
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141 | fl_visual->visual, AllocNone); |
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142 | fl_xpixel(FL_BLACK); // make sure black is allocated |
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143 | #else |
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144 | Fl::fatal("Visual id's not supported on MSWindows or MacOS."); |
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145 | #endif |
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146 | } |
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147 | } |
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148 | window.show(argc,argv); |
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149 | return Fl::run(); |
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150 | } |
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151 | |
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152 | // |
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153 | // End of "$Id: color_chooser.cxx 7903 2010-11-28 21:06:39Z matt $". |
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154 | // |
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