1 | #! perl |
1 | #! perl |
2 | |
2 | |
3 | our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; |
3 | #:META:X_RESOURCE:%.expr:string:background expression |
4 | $EXPR = 'rotate (move (load "/root/pix/das_fette_schwein.jpg", X, Y), W, H, 50, 50, counter 1/60, repeat_mirror)'; |
4 | #:META:X_RESOURCE:%.enable:boolean:some boolean |
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5 | #:META:X_RESOURCE:%.extra.:value:extra config |
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6 | |
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7 | our $EXPR = 'clip move -X, -Y, load "MagnoliaAlpha.png"'; |
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8 | #$EXPR = ' |
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9 | # rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, |
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10 | # clip X, Y, W, H, repeat_mirror, |
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11 | # load "/root/pix/das_fette_schwein.jpg" |
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12 | #'; |
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13 | #$EXPR = 'solid "red"'; |
5 | #$EXPR = 'blur root, 10, 10' |
14 | #$EXPR = 'blur root, 10, 10' |
6 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
15 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
7 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
16 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
8 | |
17 | |
9 | use Safe; |
18 | use Safe; |
10 | |
19 | |
11 | our ($bgdsl_self, $old, $new); |
20 | our ($bgdsl_self, $old, $new); |
12 | our ($l, $t, $w, $h); |
21 | our ($l, $t, $w, $h); |
13 | |
22 | |
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23 | # enforce at least this interval between updates |
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24 | our $MIN_INTERVAL = 1/100; |
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25 | |
14 | { |
26 | { |
15 | package urxvt::bgdsl; # background language |
27 | package urxvt::bgdsl; # background language |
16 | |
28 | |
17 | *repeat_black = \&urxvt::RepeatNone; #TODO wtf |
29 | # *repeat_empty = \&urxvt::RepeatNone; |
18 | *repeat_wrap = \&urxvt::RepeatNormal; |
30 | # *repeat_tile = \&urxvt::RepeatNormal; |
19 | *repeat_pad = \&urxvt::RepeatPad; |
31 | # *repeat_pad = \&urxvt::RepeatPad; |
20 | *repeat_mirror = \&urxvt::RepeatReflect; |
32 | # *repeat_mirror = \&urxvt::RepeatReflect; |
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33 | |
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34 | =head2 PROVIDERS/GENERATORS |
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35 | |
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36 | =over 4 |
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37 | |
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38 | =item load $path |
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39 | |
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40 | =cut |
21 | |
41 | |
22 | sub load($) { |
42 | sub load($) { |
23 | my ($path) = @_; |
43 | my ($path) = @_; |
24 | |
44 | |
25 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
45 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
26 | } |
46 | } |
27 | |
47 | |
28 | sub root() { |
48 | sub root() { |
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49 | $new->{rootpmap_sensitive} = 1; |
29 | die "root op not supported, exg, we need you"; |
50 | die "root op not supported, exg, we need you"; |
30 | } |
51 | } |
31 | |
52 | |
32 | # sub clone($) { |
53 | sub solid($;$$) { |
33 | # $_[0]->clone |
54 | my $img = $bgdsl_self->new_img (urxvt::PictStandardARGB32, $_[1] || 1, $_[2] || 1); |
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55 | $img->fill ($_[0]); |
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56 | $img |
34 | # } |
57 | } |
35 | |
58 | |
36 | sub subrect($$$$$;$) { |
59 | =back |
37 | $_[0]->sub_rect ($_[1], $_[2], $_[3], $_[4], $_[5]) |
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38 | } |
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39 | |
60 | |
40 | sub resize($$$) { |
61 | =head2 VARIABLES |
41 | $_[0]->scale ($_[1], $_[2]) |
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42 | } |
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43 | |
62 | |
44 | sub move($$$;$) { |
63 | =over 4 |
45 | # TODO: must be simpler |
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46 | $_[0]->transform ($_[0]->w, $_[0]->h, |
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47 | 1, 0, $_[1], |
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48 | 0, 1, $_[2], |
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49 | 0, 0, 1, |
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50 | $_[3], |
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51 | ) |
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52 | } |
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53 | |
64 | |
54 | sub rotate($$$$$$;$) { |
65 | =cut |
55 | $_[0]->rotate ( |
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56 | $_[1], |
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57 | $_[2], |
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58 | $_[3] * $_[0]->w * .01, |
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59 | $_[4] * $_[0]->h * .01, |
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60 | $_[5] * (3.14159265 / 180), |
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61 | $_[6], |
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62 | ) |
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63 | } |
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64 | |
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65 | sub blur($$$) { |
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66 | my ($img, $rh, $rv) = @_; |
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67 | |
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68 | $img = $img->clone; |
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69 | $img->blur ($rh, $rv); |
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70 | $img |
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71 | } |
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72 | |
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73 | sub contrast($$;$$;$) { |
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74 | my ($img, $r, $g, $b, $a) = @_; |
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75 | |
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76 | ($g, $b) = ($r, $r) if @_ < 4; |
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77 | $a = 1 if @_ < 5; |
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78 | |
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79 | $img = $img->clone; |
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80 | $img->contrast ($r, $g, $b, $a); |
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81 | $img |
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82 | } |
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83 | |
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84 | sub brightness($$;$$;$) { |
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85 | my ($img, $r, $g, $b, $a) = @_; |
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86 | |
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87 | ($g, $b) = ($r, $r) if @_ < 4; |
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88 | $a = 1 if @_ < 5; |
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89 | |
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90 | $img = $img->clone; |
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91 | $img->brightness ($r, $g, $b, $a); |
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92 | $img |
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93 | } |
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94 | |
66 | |
95 | sub X() { $new->{position_sensitive} = 1; $l } |
67 | sub X() { $new->{position_sensitive} = 1; $l } |
96 | sub Y() { $new->{position_sensitive} = 1; $t } |
68 | sub Y() { $new->{position_sensitive} = 1; $t } |
97 | sub W() { $new->{size_sensitive} = 1; $w } |
69 | sub W() { $new->{size_sensitive} = 1; $w } |
98 | sub H() { $new->{size_sensitive} = 1; $h } |
70 | sub H() { $new->{size_sensitive} = 1; $h } |
… | |
… | |
103 | $new->{again} = $_[0]; |
75 | $new->{again} = $_[0]; |
104 | } |
76 | } |
105 | |
77 | |
106 | sub counter($) { |
78 | sub counter($) { |
107 | $new->{again} = $_[0]; |
79 | $new->{again} = $_[0]; |
108 | $bgdsl_self->{counter}++ + 0 |
80 | $bgdsl_self->{counter} + 0 |
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81 | } |
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82 | |
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83 | =back |
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84 | |
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85 | =head2 OPERATORS |
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86 | |
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87 | =over 4 |
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88 | |
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89 | =cut |
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90 | |
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91 | # sub clone($) { |
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92 | # $_[0]->clone |
109 | } |
93 | # } |
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94 | |
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95 | sub clip($;$$;$$) { |
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96 | my $img = pop; |
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97 | my $h = pop || H; |
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98 | my $w = pop || W; |
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99 | $img->sub_rect ($_[0], $_[1], $w, $h) |
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100 | } |
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101 | |
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102 | sub resize($$$) { |
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103 | my $img = pop; |
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104 | $img->scale ($_[0], $_[1]) |
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105 | } |
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106 | |
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107 | # TODO: ugly |
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108 | sub move($$;$) { |
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109 | my $img = pop->clone; |
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110 | $img->move ($_[0], $_[1]); |
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111 | $img |
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112 | # my $img = pop; |
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113 | # $img->sub_rect ( |
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114 | # $_[0], $_[1], |
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115 | # $img->w, $img->h, |
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116 | # $_[2], |
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117 | # ) |
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118 | } |
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119 | |
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120 | sub rotate($$$$$$) { |
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121 | my $img = pop; |
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122 | $img->rotate ( |
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123 | $_[0], |
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124 | $_[1], |
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125 | $_[2] * $img->w * .01, |
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126 | $_[3] * $img->h * .01, |
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127 | $_[4] * (3.14159265 / 180), |
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128 | ) |
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129 | } |
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130 | |
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131 | sub blur($$$) { |
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132 | my ($rh, $rv, $img) = @_; |
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133 | |
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134 | $img->blur ($rh, $rv); |
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135 | } |
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136 | |
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137 | sub contrast($$;$$;$) { |
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138 | my $img = pop; |
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139 | my ($r, $g, $b, $a) = @_; |
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140 | |
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141 | ($g, $b) = ($r, $r) if @_ < 4; |
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142 | $a = 1 if @_ < 5; |
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143 | |
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144 | $img = $img->clone; |
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145 | $img->contrast ($r, $g, $b, $a); |
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146 | $img |
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147 | } |
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148 | |
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149 | sub brightness($$;$$;$) { |
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150 | my $img = pop; |
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151 | my ($r, $g, $b, $a) = @_; |
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152 | |
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153 | ($g, $b) = ($r, $r) if @_ < 4; |
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154 | $a = 1 if @_ < 5; |
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155 | |
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156 | $img = $img->clone; |
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157 | $img->brightness ($r, $g, $b, $a); |
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158 | $img |
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159 | } |
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160 | |
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161 | =back |
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162 | |
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163 | =cut |
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164 | |
110 | } |
165 | } |
111 | |
166 | |
112 | sub parse_expr { |
167 | sub parse_expr { |
113 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
168 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
114 | die if $@; |
169 | die if $@; |
… | |
… | |
125 | |
180 | |
126 | # evaluate the current bg expression |
181 | # evaluate the current bg expression |
127 | sub recalculate { |
182 | sub recalculate { |
128 | my ($self) = @_; |
183 | my ($self) = @_; |
129 | |
184 | |
130 | #TODO: rate limit calls |
185 | # rate limit evaluation |
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186 | |
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187 | if ($self->{next_refresh} > urxvt::NOW) { |
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188 | $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub { |
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189 | $self->recalculate; |
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190 | }); |
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191 | return; |
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192 | } |
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193 | |
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194 | $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL; |
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195 | |
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196 | # set environment to evaluate user expression |
131 | |
197 | |
132 | local $bgdsl_self = $self; |
198 | local $bgdsl_self = $self; |
133 | |
199 | |
134 | local $old = $self->{state}; |
200 | local $old = $self->{state}; |
135 | local $new = my $state = $self->{state} = {}; |
201 | local $new = my $state = $self->{state} = {}; |
136 | |
202 | |
137 | ($l, $t, $w, $h) = |
203 | ($l, $t, $w, $h) = |
138 | $self->get_geometry; |
204 | $self->get_geometry; |
139 | |
205 | |
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206 | warn "$l,$t,$w,$h\n";#d# |
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207 | |
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208 | # evaluate user expression |
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209 | |
140 | my $img = eval { $self->{expr}->() }; |
210 | my $img = eval { $self->{expr}->() }; |
141 | warn $@ if $@;#d# |
211 | warn $@ if $@;#d# |
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212 | die if !UNIVERSAL::isa $img, "urxvt::img"; |
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213 | |
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214 | # if the expression is sensitive to external events, prepare reevaluation then |
142 | |
215 | |
143 | my $repeat; |
216 | my $repeat; |
144 | |
217 | |
145 | if (my $again = $state->{again}) { |
218 | if (my $again = $state->{again}) { |
146 | $repeat = 1; |
219 | $repeat = 1; |
147 | $state->{timer} = $again == $old->{again} |
220 | $state->{timer} = $again == $old->{again} |
148 | ? $old->{timer} |
221 | ? $old->{timer} |
149 | : urxvt::timer->new->after ($again)->interval ($again)->cb (sub { $self->recalculate }); |
222 | : urxvt::timer->new->after ($again)->interval ($again)->cb (sub { |
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223 | ++$self->{counter}; |
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224 | $self->recalculate |
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225 | }); |
150 | } |
226 | } |
151 | |
227 | |
152 | if (delete $state->{position_sensitive}) { |
228 | if (delete $state->{position_sensitive}) { |
153 | $repeat = 1; |
229 | $repeat = 1; |
154 | $self->enable (position_change => sub { $_[0]->recalculate }); |
230 | $self->enable (position_change => sub { $_[0]->recalculate }); |
… | |
… | |
161 | $self->enable (size_change => sub { $_[0]->recalculate }); |
237 | $self->enable (size_change => sub { $_[0]->recalculate }); |
162 | } else { |
238 | } else { |
163 | $self->disable ("size_change"); |
239 | $self->disable ("size_change"); |
164 | } |
240 | } |
165 | |
241 | |
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242 | if (delete $state->{rootpmap_sensitive}) { |
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243 | $repeat = 1; |
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244 | $self->enable (rootpmap_change => sub { $_[0]->recalculate }); |
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245 | } else { |
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246 | $self->disable ("rootpmap_change"); |
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247 | } |
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248 | |
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249 | # clear stuff we no longer need |
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250 | |
166 | %$old = (); |
251 | %$old = (); |
167 | |
252 | |
168 | unless ($repeat) { |
253 | unless ($repeat) { |
169 | delete $self->{state}; |
254 | delete $self->{state}; |
170 | delete $self->{expr}; |
255 | delete $self->{expr}; |
171 | } |
256 | } |
172 | |
257 | |
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258 | # prepare and set background pixmap |
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259 | |
173 | $img = $img->sub_rect (0, 0, $w, $h) |
260 | $img = $img->sub_rect (0, 0, $w, $h) |
174 | if $img->w != $w || $img->h != $h; |
261 | if $img->w != $w || $img->h != $h; |
175 | |
262 | |
176 | $self->set_background ($img); |
263 | $self->set_background ($img); |
177 | $self->scr_recolour (0); |
264 | $self->scr_recolour (0); |