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2 | |
2 | |
3 | #:META:X_RESOURCE:%.expr:string:background expression |
3 | #:META:X_RESOURCE:%.expr:string:background expression |
4 | #:META:X_RESOURCE:%.enable:boolean:some boolean |
4 | #:META:X_RESOURCE:%.enable:boolean:some boolean |
5 | #:META:X_RESOURCE:%.extra.:value:extra config |
5 | #:META:X_RESOURCE:%.extra.:value:extra config |
6 | |
6 | |
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7 | our $EXPR; |
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8 | #$EXPR = 'move W * 0.1, -H * 0.1, resize W * 0.5, H * 0.5, repeat_none load "opensource.png"'; |
7 | our $EXPR = 'move X, Y, load "MagnoliaAlpha.png"'; |
9 | $EXPR = 'move -TX, -TY, load "argb.png"'; |
8 | #$EXPR = ' |
10 | #$EXPR = ' |
9 | # rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, |
11 | # rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, |
10 | # clip X, Y, W, H, repeat_mirror, |
12 | # clip X, Y, W, H, repeat_mirror, |
11 | # load "/root/pix/das_fette_schwein.jpg" |
13 | # load "/root/pix/das_fette_schwein.jpg" |
12 | #'; |
14 | #'; |
… | |
… | |
16 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
18 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
17 | |
19 | |
18 | use Safe; |
20 | use Safe; |
19 | |
21 | |
20 | our ($bgdsl_self, $old, $new); |
22 | our ($bgdsl_self, $old, $new); |
21 | our ($l, $t, $w, $h); |
23 | our ($x, $y, $w, $h); |
22 | |
24 | |
23 | # enforce at least this interval between updates |
25 | # enforce at least this interval between updates |
24 | our $MIN_INTERVAL = 1/100; |
26 | our $MIN_INTERVAL = 1/100; |
25 | |
27 | |
26 | { |
28 | { |
27 | package urxvt::bgdsl; # background language |
29 | package urxvt::bgdsl; # background language |
28 | |
30 | |
29 | *repeat_empty = \&urxvt::RepeatNone; |
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30 | *repeat_tile = \&urxvt::RepeatNormal; |
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31 | *repeat_pad = \&urxvt::RepeatPad; |
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32 | *repeat_mirror = \&urxvt::RepeatReflect; |
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33 | |
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34 | =head2 PROVIDERS/GENERATORS |
31 | =head2 PROVIDERS/GENERATORS |
35 | |
32 | |
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33 | These functions provide an image, by loading it from disk, grabbing it |
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34 | from the root screen or by simply generating it. They are used as starting |
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35 | points to get an image you can play with. |
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36 | |
36 | =over 4 |
37 | =over 4 |
37 | |
38 | |
38 | =item load $path |
39 | =item load $path |
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40 | |
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41 | Loads the image at the given C<$path>. The image is set to plane tiling |
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42 | mode. |
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43 | |
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44 | Loaded images will be cached for one cycle. |
39 | |
45 | |
40 | =cut |
46 | =cut |
41 | |
47 | |
42 | sub load($) { |
48 | sub load($) { |
43 | my ($path) = @_; |
49 | my ($path) = @_; |
44 | |
50 | |
45 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
51 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
46 | } |
52 | } |
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53 | |
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54 | =item root |
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55 | |
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56 | Returns the root window pixmap, that is, hopefully, the background image |
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57 | of your screen. The image is set to extend mode. |
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58 | |
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59 | This function makes your expression root sensitive, that means it will be |
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60 | reevaluated when the bg image changes. |
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61 | |
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62 | =cut |
47 | |
63 | |
48 | sub root() { |
64 | sub root() { |
49 | $new->{rootpmap_sensitive} = 1; |
65 | $new->{rootpmap_sensitive} = 1; |
50 | die "root op not supported, exg, we need you"; |
66 | die "root op not supported, exg, we need you"; |
51 | } |
67 | } |
52 | |
68 | |
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69 | =item solid $colour |
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70 | |
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71 | =item solid $width, $height, $colour |
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72 | |
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73 | Creates a new image and completely fills it with the given colour. The |
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74 | image is set to tiling mode. |
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75 | |
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76 | If <$width> and C<$height> are omitted, it creates a 1x1 image, which is |
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77 | useful for solid backgrounds or for use in filtering effects. |
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78 | |
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79 | =cut |
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80 | |
53 | sub solid($;$$) { |
81 | sub solid($$;$) { |
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82 | my $colour = pop; |
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83 | |
54 | my $img = $bgdsl_self->new_img (urxvt::PictStandardARGB32, $_[1] || 1, $_[2] || 1); |
84 | my $img = $bgdsl_self->new_img (urxvt::PictStandardARGB32, $_[0] || 1, $_[1] || 1); |
55 | $img->fill ($_[0]); |
85 | $img->fill ($colour); |
56 | $img |
86 | $img |
57 | } |
87 | } |
58 | |
88 | |
59 | =back |
89 | =back |
60 | |
90 | |
61 | =head2 OPERATORS |
91 | =head2 VARIABLES |
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92 | |
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93 | The following functions provide variable data such as the terminal |
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94 | window dimensions. Most of them make your expression sensitive to some |
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95 | events, for example using C<TW> (terminal width) means your expression is |
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96 | evaluated again when the terminal is resized. |
62 | |
97 | |
63 | =over 4 |
98 | =over 4 |
64 | |
99 | |
65 | =cut |
100 | =item TX |
66 | |
101 | |
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102 | =item TY |
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103 | |
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104 | Return the X and Y coordinates of the terminal window (the terminal |
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105 | window is the full window by default, and the character area only when in |
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106 | border-respect mode). |
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107 | |
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108 | Using these functions make your expression sensitive to window moves. |
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109 | |
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110 | These functions are mainly useful to align images to the root window. |
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111 | |
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112 | Example: load an image and align it so it looks as if anchored to the |
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113 | background. |
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114 | |
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115 | move -TX, -TY, load "mybg.png" |
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116 | |
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117 | =item TW |
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118 | |
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119 | Return the width (C<TW>) and height (C<TH>) of the terminal window (the |
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120 | terminal window is the full window by default, and the character area only |
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121 | when in border-respect mode). |
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122 | |
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123 | Using these functions make your expression sensitive to window resizes. |
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124 | |
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125 | These functions are mainly useful to scale images, or to clip images to |
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126 | the window size to conserve memory. |
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127 | |
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128 | Example: take the screen background, clip it to the window size, blur it a |
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129 | bit, align it to the window position and use it as background. |
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130 | |
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131 | clip move -TX, -TY, blur 5, root |
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132 | |
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133 | =cut |
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134 | |
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135 | sub TX() { $new->{position_sensitive} = 1; $x } |
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136 | sub TY() { $new->{position_sensitive} = 1; $y } |
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137 | sub TW() { $new->{size_sensitive} = 1; $w } |
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138 | sub TH() { $new->{size_sensitive} = 1; $h } |
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139 | |
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140 | sub now() { urxvt::NOW } |
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141 | |
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142 | sub again($) { |
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143 | $new->{again} = $_[0]; |
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144 | } |
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145 | |
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146 | sub counter($) { |
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147 | $new->{again} = $_[0]; |
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148 | $bgdsl_self->{counter} + 0 |
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149 | } |
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150 | |
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151 | =back |
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152 | |
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153 | =head2 TILING MODES |
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154 | |
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155 | The following operators modify the tiling mode of an image, that is, the |
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156 | way that pixels outside the image area are painted when the image is used. |
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157 | |
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158 | =over 4 |
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159 | |
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160 | =item tile $img |
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161 | |
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162 | Tiles the whole plane with the image and returns this new image - or in |
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163 | other words, it returns a copy of the image in plane tiling mode. |
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164 | |
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165 | =item mirror $img |
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166 | |
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167 | Similar to tile, but reflects the image each time it uses a new copy, so |
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168 | that top edges always touch top edges, right edges always touch right |
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169 | edges and so on (with normal tiling, left edges always touch right edges |
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170 | and top always touch bottom edges). |
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171 | |
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172 | =item pad $img |
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173 | |
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174 | Takes an image and modifies it so that all pixels outside the image area |
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175 | become transparent. This mode is most useful when you want to place an |
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176 | image over another image or the background colour while leaving all |
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177 | background pixels outside the image unchanged. |
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178 | |
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179 | =item extend $img |
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180 | |
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181 | Extends the image over the whole plane, using the closest pixel in the |
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182 | area outside the image. This mode is mostly useful when you more complex |
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183 | filtering operations and want the pixels outside the image to have the |
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184 | same values as the pixels near the edge. |
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185 | |
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186 | =cut |
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187 | |
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188 | sub pad($) { |
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189 | my $img = $_[0]->clone; |
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190 | $img->repeat_mode (urxvt::RepeatNone); |
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191 | $img |
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192 | } |
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193 | |
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194 | sub tile($) { |
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195 | my $img = $_[0]->clone; |
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196 | $img->repeat_mode (urxvt::RepeatNormal); |
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197 | $img |
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198 | } |
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199 | |
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200 | sub mirror($) { |
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201 | my $img = $_[0]->clone; |
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202 | $img->repeat_mode (urxvt::RepeatReflect); |
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203 | $img |
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204 | } |
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205 | |
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206 | sub extend($) { |
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207 | my $img = $_[0]->clone; |
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208 | $img->repeat_mode (urxvt::RepeatPad); |
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209 | $img |
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210 | } |
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211 | |
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212 | =back |
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213 | |
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214 | =head2 PIXEL OPERATORS |
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215 | |
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216 | The following operators modify the image pixels in various ways. |
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217 | |
|
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218 | =over 4 |
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219 | |
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220 | =item clone $img |
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221 | |
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222 | Returns an exact copy of the image. |
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223 | |
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224 | =cut |
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225 | |
67 | # sub clone($) { |
226 | sub clone($) { |
68 | # $_[0]->clone |
227 | $_[0]->clone |
69 | # } |
228 | } |
70 | |
229 | |
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230 | =item clip $img |
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231 | |
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232 | =item clip $width, $height, $img |
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233 | |
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234 | =item clip $x, $y, $width, $height, $img |
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235 | |
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236 | Clips an image to the given rectangle. If the rectangle is outside the |
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237 | image area (e.g. when C<$x> or C<$y> are negative) or the rectangle is |
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238 | larger than the image, then the tiling mode defines how the extra pixels |
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239 | will be filled. |
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240 | |
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241 | If C<$x> an C<$y> are missing, then C<0> is assumed for both. |
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242 | |
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243 | If C<$width> and C<$height> are missing, then the window size will be |
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244 | assumed. |
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245 | |
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246 | Example: load an image, blur it, and clip it to the window size to save |
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247 | memory. |
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248 | |
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249 | clip blur 10, load "mybg.png" |
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250 | |
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251 | =cut |
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252 | |
71 | sub clip($$$$$;$) { |
253 | sub clip($;$$;$$) { |
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254 | my $img = pop; |
72 | my $img = pop; |
255 | my $h = pop || TH; |
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256 | my $w = pop || TW; |
73 | $img->sub_rect ($_[0], $_[1], $_[2], $_[3], $_[4]) |
257 | $img->sub_rect ($_[0], $_[1], $w, $h) |
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258 | } |
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259 | |
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260 | =item scale $img |
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261 | |
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262 | =item scale $size_percent, $img |
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263 | |
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264 | =item scale $width_percent, $height_percent, $img |
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265 | |
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266 | Scales the image by the given percentages in horizontal |
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267 | (C<$width_percent>) and vertical (C<$height_percent>) direction. |
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268 | |
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269 | If only one percentage is give, it is used for both directions. |
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270 | |
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271 | If no percentages are given, scales the image to the window size without |
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272 | keeping aspect. |
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273 | |
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274 | =item resize $width, $height, $img |
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275 | |
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276 | Resizes the image to exactly C<$width> times C<$height> pixels. |
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277 | |
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278 | =cut |
|
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279 | |
|
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280 | #TODO: maximise, maximise_fill? |
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281 | |
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282 | sub scale($$$) { |
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283 | my $img = pop; |
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284 | |
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285 | @_ == 2 ? $img->scale ($_[0] * $img->w * 0.01, $_[1] * $img->h * 0.01) |
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286 | : @_ ? $img->scale ($_[0] * $img->w * 0.01, $_[0] * $img->h * 0.01) |
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287 | : $img->scale (TW, TH) |
74 | } |
288 | } |
75 | |
289 | |
76 | sub resize($$$) { |
290 | sub resize($$$) { |
77 | my $img = pop; |
291 | my $img = pop; |
78 | $img->scale ($_[0], $_[1]) |
292 | $img->scale ($_[0], $_[1]) |
79 | } |
293 | } |
80 | |
294 | |
81 | # TODO: ugly |
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82 | sub move($$;$) { |
295 | sub move($$;$) { |
83 | my $img = pop; |
296 | my $img = pop->clone; |
84 | $img->sub_rect ( |
297 | $img->move ($_[0], $_[1]); |
85 | $_[0], $_[1], |
298 | $img |
86 | $img->w, $img->h, |
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87 | $_[2], |
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88 | ) |
|
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89 | } |
299 | } |
90 | |
300 | |
91 | sub rotate($$$$$$;$) { |
301 | sub rotate($$$$$$) { |
92 | my $img = pop; |
302 | my $img = pop; |
93 | $img->rotate ( |
303 | $img->rotate ( |
94 | $_[0], |
304 | $_[0], |
95 | $_[1], |
305 | $_[1], |
96 | $_[2] * $img->w * .01, |
306 | $_[2] * $img->w * .01, |
97 | $_[3] * $img->h * .01, |
307 | $_[3] * $img->h * .01, |
98 | $_[4] * (3.14159265 / 180), |
308 | $_[4] * (3.14159265 / 180), |
99 | $_[5], |
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100 | ) |
309 | ) |
101 | } |
310 | } |
102 | |
311 | |
103 | sub blur($$$) { |
312 | sub blur($$;$) { |
104 | my ($rh, $rv, $img) = @_; |
313 | my $img = pop; |
105 | |
314 | $img->blur ($_[0], @_ >= 2 ? $_[1] : $_[0]) |
106 | $img->blur ($rh, $rv); |
|
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107 | } |
315 | } |
108 | |
316 | |
109 | sub contrast($$;$$;$) { |
317 | sub contrast($$;$$;$) { |
110 | my $img = pop; |
318 | my $img = pop; |
111 | my ($r, $g, $b, $a) = @_; |
319 | my ($r, $g, $b, $a) = @_; |
… | |
… | |
126 | $a = 1 if @_ < 5; |
334 | $a = 1 if @_ < 5; |
127 | |
335 | |
128 | $img = $img->clone; |
336 | $img = $img->clone; |
129 | $img->brightness ($r, $g, $b, $a); |
337 | $img->brightness ($r, $g, $b, $a); |
130 | $img |
338 | $img |
131 | } |
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132 | |
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133 | sub X() { $new->{position_sensitive} = 1; $l } |
|
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134 | sub Y() { $new->{position_sensitive} = 1; $t } |
|
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135 | sub W() { $new->{size_sensitive} = 1; $w } |
|
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136 | sub H() { $new->{size_sensitive} = 1; $h } |
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137 | |
|
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138 | sub now() { urxvt::NOW } |
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139 | |
|
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140 | sub again($) { |
|
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141 | $new->{again} = $_[0]; |
|
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142 | } |
|
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143 | |
|
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144 | sub counter($) { |
|
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145 | $new->{again} = $_[0]; |
|
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146 | $bgdsl_self->{counter} + 0 |
|
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147 | } |
339 | } |
148 | |
340 | |
149 | =back |
341 | =back |
150 | |
342 | |
151 | =cut |
343 | =cut |
… | |
… | |
186 | local $bgdsl_self = $self; |
378 | local $bgdsl_self = $self; |
187 | |
379 | |
188 | local $old = $self->{state}; |
380 | local $old = $self->{state}; |
189 | local $new = my $state = $self->{state} = {}; |
381 | local $new = my $state = $self->{state} = {}; |
190 | |
382 | |
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383 | my $border = 0; #d# |
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384 | |
191 | ($l, $t, $w, $h) = |
385 | ($x, $y, $w, $h) = |
192 | $self->get_geometry; |
386 | $self->background_geometry ($border); |
193 | |
387 | |
194 | # evaluate user expression |
388 | # evaluate user expression |
195 | |
389 | |
196 | my $img = eval { $self->{expr}->() }; |
390 | my $img = eval { $self->{expr}->() }; |
197 | warn $@ if $@;#d# |
391 | warn $@ if $@;#d# |
… | |
… | |
244 | # prepare and set background pixmap |
438 | # prepare and set background pixmap |
245 | |
439 | |
246 | $img = $img->sub_rect (0, 0, $w, $h) |
440 | $img = $img->sub_rect (0, 0, $w, $h) |
247 | if $img->w != $w || $img->h != $h; |
441 | if $img->w != $w || $img->h != $h; |
248 | |
442 | |
249 | $self->set_background ($img); |
443 | $self->set_background ($img, $border); |
250 | $self->scr_recolour (0); |
444 | $self->scr_recolour (0); |
251 | $self->want_refresh; |
445 | $self->want_refresh; |
252 | } |
446 | } |
253 | |
447 | |
254 | sub on_start { |
448 | sub on_start { |