1 | <?php // content="text/plain; charset=utf-8" |
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2 | //======================================================================= |
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3 | // File: MKGRAD.PHP |
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4 | // Description: Simple tool to create a gradient background |
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5 | // Ver: $Id$ |
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6 | //======================================================================= |
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7 | |
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8 | // Basic library classes |
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9 | require_once ('jpgraph/jpgraph.php'); |
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10 | require_once ('jpgraph/jpgraph_bar.php'); |
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11 | require_once ('jpgraph/jpgraph_canvas.php'); |
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12 | |
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13 | |
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14 | // Must have a global comparison method for usort() |
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15 | function _cmp($a,$b) { |
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16 | return strcmp($a,$b); |
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17 | } |
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18 | |
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19 | // Generate the input form |
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20 | class Form { |
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21 | var $iColors; |
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22 | var $iGradstyles; |
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23 | function Form() { |
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24 | |
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25 | $rgb = new RGB(); |
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26 | $this->iColors = array_keys($rgb->rgb_table); |
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27 | usort($this->iColors,'_cmp'); |
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28 | |
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29 | $this->iGradstyles = array( |
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30 | "Vertical",2, |
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31 | "Horizontal",1, |
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32 | "Vertical from middle",3, |
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33 | "Horizontal from middle",4, |
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34 | "Horizontal wider middle",6, |
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35 | "Vertical wider middle",7, |
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36 | "Rectangle",5 ); |
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37 | } |
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38 | |
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39 | function Run() { |
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40 | |
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41 | echo '<h3>Generate gradient background</h3>'; |
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42 | echo '<form METHOD=POST action=""><table style="border:blue solid 1;">'; |
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43 | echo '<tr><td>Width:<br>'.$this->GenHTMLInput('w',8,4,300).'</td>'; |
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44 | echo "\n"; |
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45 | echo '<td>Height:<br>'.$this->GenHTMLInput('h',8,4,300).'</td></tr>'; |
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46 | echo "\n"; |
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47 | echo '<tr><td>From Color:<br>'; |
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48 | echo $this->GenHTMLSelect('fc',$this->iColors); |
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49 | echo '</td><td>To Color:<br>'; |
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50 | echo $this->GenHTMLSelect('tc',$this->iColors); |
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51 | echo '</td></tr>'; |
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52 | echo '<tr><td colspan=2>Gradient style:<br>'; |
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53 | echo $this->GenHTMLSelectCode('s',$this->iGradstyles); |
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54 | echo '</td></tr>'; |
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55 | echo '<tr><td colspan=2>Filename: (empty to stream)<br>'; |
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56 | echo $this->GenHTMLInput('fn',55,100); |
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57 | echo '</td></tr>'; |
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58 | echo '<tr><td colspan=2 align=right>'.$this->GenHTMLSubmit('submit').'</td></tr>'; |
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59 | echo '</table>'; |
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60 | echo '</form>'; |
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61 | |
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62 | } |
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63 | |
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64 | function GenHTMLSubmit($name) { |
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65 | return '<INPUT TYPE=submit name="ok" value=" Ok " >'; |
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66 | } |
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67 | |
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68 | |
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69 | function GenHTMLInput($name,$len,$maxlen=100,$val='') { |
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70 | return '<INPUT TYPE=TEXT NAME='.$name.' VALUE="'.$val.'" SIZE='.$len.' MAXLENGTH='.$maxlen.'>'; |
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71 | } |
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72 | |
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73 | function GenHTMLSelect($name,$option,$selected="",$size=0) { |
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74 | $txt="<select name=$name"; |
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75 | if( $size > 0 ) |
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76 | $txt .= " size=$size >"; |
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77 | else |
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78 | $txt .= ">"; |
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79 | for($i=0; $i<count($option); $i++) { |
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80 | if( $selected==$option[$i] ) |
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81 | $txt=$txt."<option selected value=\"$option[$i]\">$option[$i]</option>\n"; |
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82 | else |
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83 | $txt=$txt."<option value=\"".$option[$i]."\">$option[$i]</option>\n"; |
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84 | } |
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85 | return $txt."</select>\n"; |
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86 | } |
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87 | |
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88 | function GenHTMLSelectCode($name,$option,$selected="",$size=0) { |
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89 | $txt="<select name=$name"; |
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90 | if( $size > 0 ) |
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91 | $txt .= " size=$size >"; |
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92 | else |
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93 | $txt .= ">"; |
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94 | for($i=0; $i<count($option); $i += 2) { |
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95 | if( $selected==$option[($i+1)] ) |
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96 | $txt=$txt."<option selected value=".$option[($i+1)].">$option[$i]</option>\n"; |
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97 | else |
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98 | $txt=$txt."<option value=\"".$option[($i+1)]."\">$option[$i]</option>\n"; |
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99 | } |
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100 | return $txt."</select>\n"; |
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101 | } |
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102 | |
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103 | } |
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104 | |
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105 | // Basic application driver |
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106 | |
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107 | class Driver { |
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108 | var $iGraph, $iGrad; |
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109 | var $iWidth,$iHeight; |
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110 | var $iFromColor, $iToColor; |
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111 | var $iStyle; |
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112 | var $iForm; |
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113 | |
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114 | function Driver() { |
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115 | $this->iForm = new Form(); |
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116 | } |
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117 | |
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118 | function GenGradImage() { |
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119 | |
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120 | $aWidth = (int)@$_POST['w']; |
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121 | $aHeight = (int)@$_POST['h']; |
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122 | $aFrom = @$_POST['fc']; |
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123 | $aTo = @$_POST['tc']; |
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124 | $aStyle = @$_POST['s']; |
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125 | $aFileName = @$_POST['fn']; |
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126 | |
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127 | $this->iWidth = $aWidth; |
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128 | $this->iHeight = $aHeight; |
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129 | $this->iFromColor = $aFrom; |
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130 | $this->iToColor = $aTo; |
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131 | $this->iStyle = $aStyle; |
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132 | |
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133 | $this->graph = new CanvasGraph($aWidth,$aHeight); |
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134 | $this->grad = new Gradient($this->graph->img); |
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135 | $this->grad->FilledRectangle(0,0, |
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136 | $this->iWidth,$this->iHeight, |
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137 | $this->iFromColor, |
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138 | $this->iToColor, |
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139 | $this->iStyle); |
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140 | |
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141 | if( $aFileName != "" ) { |
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142 | $this->graph->Stroke($aFileName); |
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143 | echo "Image file '$aFileName' created."; |
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144 | } |
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145 | else |
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146 | $this->graph->Stroke(); |
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147 | } |
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148 | |
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149 | |
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150 | function Run() { |
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151 | |
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152 | global $HTTP_POST_VARS; |
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153 | |
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154 | // Two modes: |
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155 | // 1) If the script is called with no posted arguments |
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156 | // we show the input form. |
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157 | // 2) If we have posted arguments we naivly assume that |
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158 | // we are called to do the image. |
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159 | |
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160 | if( @$_POST['ok']===' Ok ' ) { |
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161 | $this->GenGradImage(); |
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162 | } |
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163 | else |
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164 | $this->iForm->Run(); |
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165 | } |
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166 | } |
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167 | |
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168 | $driver = new Driver(); |
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169 | $driver->Run(); |
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170 | |
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171 | ?> |
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