/
t40scale.t
236 lines (206 loc) · 8.83 KB
/
t40scale.t
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
#!perl -w
use strict;
use Test::More tests => 230;
BEGIN { use_ok(Imager=>':all') }
use Imager::Test qw(is_image is_color4);
Imager::init('log'=>'testout/t40scale.log');
my $img=Imager->new();
ok($img->open(file=>'testimg/scale.ppm',type=>'pnm'),
"load test image") or print "# ",$img->errstr,"\n";
my $scaleimg=$img->scale(scalefactor=>0.25)
or print "# ",$img->errstr,"\n";
ok($scaleimg, "scale it (good mode)");
ok($scaleimg->write(file=>'testout/t40scale1.ppm',type=>'pnm'),
"save scaled image") or print "# ",$img->errstr,"\n";
$scaleimg=$img->scale(scalefactor=>0.25,qtype=>'preview');
ok($scaleimg, "scale it (preview)") or print "# ",$img->errstr,"\n";
ok($scaleimg->write(file=>'testout/t40scale2.ppm',type=>'pnm'),
"write preview scaled image") or print "# ",$img->errstr,"\n";
$scaleimg = $img->scale(scalefactor => 0.25, qtype => 'mixing');
ok($scaleimg, "scale it (mixing)") or print "# ", $img->errstr, "\n";
ok($scaleimg->write(file=>'testout/t40scale3.ppm', type=>'pnm'),
"write mixing scaled image") or print "# ", $img->errstr, "\n";
{ # double image scaling with mixing, since it has code to handle it
my $dimg = Imager->new(xsize => $img->getwidth, ysize => $img->getheight,
channels => $img->getchannels,
bits => 'double');
ok($dimg, "create double/sample image");
$dimg->paste(src => $img);
$scaleimg = $dimg->scale(scalefactor => 0.25, qtype => 'mixing');
ok($scaleimg, "scale it (mixing, double)");
ok($scaleimg->write(file => 'testout/t40mixdbl.ppm', type => 'pnm'),
"write double/mixing scaled image");
is($scaleimg->bits, 'double', "got the right image type as output");
# hscale only, mixing
$scaleimg = $dimg->scale(xscalefactor => 0.33, yscalefactor => 1.0,
qtype => 'mixing');
ok($scaleimg, "scale it (hscale, mixing, double)");
is($scaleimg->getheight, $dimg->getheight, "same height");
ok($scaleimg->write(file => 'testout/t40hscdmix.ppm', type => 'pnm'),
"save it");
# vscale only, mixing
$scaleimg = $dimg->scale(xscalefactor => 1.0, yscalefactor => 0.33,
qtype => 'mixing');
ok($scaleimg, "scale it (vscale, mixing, double)");
is($scaleimg->getwidth, $dimg->getwidth, "same width");
ok($scaleimg->write(file => 'testout/t40vscdmix.ppm', type => 'pnm'),
"save it");
}
{
# check for a warning when scale() is called in void context
my $warning;
local $SIG{__WARN__} =
sub {
$warning = "@_";
my $printed = $warning;
$printed =~ s/\n$//;
$printed =~ s/\n/\n\#/g;
print "# ",$printed, "\n";
};
$img->scale(scalefactor=>0.25);
cmp_ok($warning, '=~', qr/void/, "check warning");
cmp_ok($warning, '=~', qr/t40scale\.t/, "check filename");
$warning = '';
$img->scaleX(scalefactor=>0.25);
cmp_ok($warning, '=~', qr/void/, "check warning");
cmp_ok($warning, '=~', qr/t40scale\.t/, "check filename");
$warning = '';
$img->scaleY(scalefactor=>0.25);
cmp_ok($warning, '=~', qr/void/, "check warning");
cmp_ok($warning, '=~', qr/t40scale\.t/, "check filename");
}
{ # https://rt.cpan.org/Ticket/Display.html?id=7467
# segfault in Imager 0.43
# make sure scale() doesn't let us make an image zero pixels high or wide
# it does this by making the given axis as least 1 pixel high
my $out = $img->scale(scalefactor=>0.00001);
is($out->getwidth, 1, "min scale width");
is($out->getheight, 1, "min scale height");
$out = $img->scale(scalefactor=>0.00001, qtype => 'preview');
is($out->getwidth, 1, "min scale width (preview)");
is($out->getheight, 1, "min scale height (preview)");
$out = $img->scale(scalefactor=>0.00001, qtype => 'mixing');
is($out->getwidth, 1, "min scale width (mixing)");
is($out->getheight, 1, "min scale height (mixing)");
}
{ # error handling - NULL image
my $im = Imager->new;
ok(!$im->scale(scalefactor => 0.5), "try to scale empty image");
is($im->errstr, "empty input image", "check error message");
# scaleX/scaleY
ok(!$im->scaleX(scalefactor => 0.5), "try to scaleX empty image");
is($im->errstr, "empty input image", "check error message");
ok(!$im->scaleY(scalefactor => 0.5), "try to scaleY empty image");
is($im->errstr, "empty input image", "check error message");
}
{ # invalid qtype value
my $im = Imager->new(xsize => 100, ysize => 100);
ok(!$im->scale(scalefactor => 0.5, qtype=>'unknown'), "unknown qtype");
is($im->errstr, "invalid value for qtype parameter", "check error message");
# invalid type value
ok(!$im->scale(xpixels => 10, ypixels=>50, type=>"unknown"), "unknown type");
is($im->errstr, "invalid value for type parameter", "check error message");
}
SKIP:
{ # Image::Math::Constrain support
eval "require Image::Math::Constrain;";
$@ and skip "optional module Image::Math::Constrain not installed", 3;
my $constrain = Image::Math::Constrain->new(20, 100);
my $im = Imager->new(xsize => 160, ysize => 96);
my $result = $im->scale(constrain => $constrain);
ok($result, "successful scale with Image::Math::Constrain");
is($result->getwidth, 20, "check result width");
is($result->getheight, 12, "check result height");
}
{ # scale size checks
my $im = Imager->new(xsize => 160, ysize => 96); # some random size
scale_test($im, 'scale', 80, 48, "48 x 48 def type",
xpixels => 48, ypixels => 48);
scale_test($im, 'scale', 80, 48, "48 x 48 max type",
xpixels => 48, ypixels => 48, type => 'max');
scale_test($im, 'scale', 80, 48, "80 x 80 min type",
xpixels => 80, ypixels => 80, type => 'min');
scale_test($im, 'scale', 80, 48, "no scale parameters (default to 0.5 scalefactor)");
scale_test($im, 'scale', 120, 72, "0.75 scalefactor",
scalefactor => 0.75);
scale_test($im, 'scale', 80, 48, "80 width",
xpixels => 80);
scale_test($im, 'scale', 120, 72, "72 height",
ypixels => 72);
# new scaling parameters in 0.54
scale_test($im, 'scale', 80, 48, "xscale 0.5",
xscalefactor => 0.5);
scale_test($im, 'scale', 80, 48, "yscale 0.5",
yscalefactor => 0.5);
scale_test($im, 'scale', 40, 48, "xscale 0.25 yscale 0.5",
xscalefactor => 0.25, yscalefactor => 0.5);
scale_test($im, 'scale', 160, 48, "xscale 1.0 yscale 0.5",
xscalefactor => 1.0, yscalefactor => 0.5);
scale_test($im, 'scale', 160, 48, "xpixels 160 ypixels 48 type nonprop",
xpixels => 160, ypixels => 48, type => 'nonprop');
scale_test($im, 'scale', 160, 96, "xpixels 160 ypixels 96",
xpixels => 160, ypixels => 96);
scale_test($im, 'scale', 80, 96, "xpixels 80 ypixels 96 type nonprop",
xpixels => 80, ypixels => 96, type => 'nonprop');
# scaleX
scale_test($im, 'scaleX', 80, 96, "defaults");
scale_test($im, 'scaleX', 40, 96, "0.25 scalefactor",
scalefactor => 0.25);
scale_test($im, 'scaleX', 120, 96, "pixels 120",
pixels => 120);
# scaleY
scale_test($im, 'scaleY', 160, 48, "defaults");
scale_test($im, 'scaleY', 160, 192, "2.0 scalefactor",
scalefactor => 2.0);
scale_test($im, 'scaleY', 160, 144, "pixels 144",
pixels => 144);
}
{ # check proper alpha handling
my $im = Imager->new(xsize => 40, ysize => 40, channels => 4);
$im->box(filled => 1, color => 'C0C0C0');
my $rot = $im->rotate(degrees => -4)
or die;
$rot = $rot->to_rgb16;
my $sc = $rot->scale(qtype => 'mixing', xpixels => 40);
my $out = Imager->new(xsize => $sc->getwidth, ysize => $sc->getheight);
$out->box(filled => 1, color => 'C0C0C0');
my $cmp = $out->copy;
$out->rubthrough(src => $sc);
is_image($out, $cmp, "check we get the right image after scaling");
# we now set alpha=0 pixels to zero on scaling
is_color4($sc->getpixel('x' => 39, 'y' => 39), 0, 0, 0, 0,
"check we set alpha=0 pixels to zero on scaling");
}
{ # scale_calculate
my $im = Imager->new(xsize => 100, ysize => 120);
is_deeply([ $im->scale_calculate(scalefactor => 0.5) ],
[ 0.5, 0.5, 50, 60 ],
"simple scale_calculate");
is_deeply([ Imager->scale_calculate(scalefactor => 0.5) ],
[], "failed scale_calculate");
is_deeply([ Imager->scale_calculate(width => 120, height => 150,
xpixels => 240) ],
[ 2.0, 2.0, 240, 300 ],
"class method scale_factor");
}
{ # passing a reference for scaling parameters should fail
# RT #35172
my $im = Imager->new(xsize => 100, ysize => 100);
ok(!$im->scale(xpixels => {}), "can't use a reference as a size");
cmp_ok($im->errstr, '=~', "xpixels parameter cannot be a reference",
"check error message");
}
sub scale_test {
my ($in, $method, $exp_width, $exp_height, $note, @parms) = @_;
print "# $note: @parms\n";
for my $qtype (qw(normal preview mixing)) {
SKIP:
{
my $scaled = $in->$method(@parms, qtype => $qtype);
ok($scaled, "$method $note qtype $qtype")
or skip("failed to scale", 2);
is($scaled->getwidth, $exp_width, "check width");
is($scaled->getheight, $exp_height, "check height");
}
}
}