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/**
* A class to specify a geometry argument.
*
* Copyright: Mike Wey 2011
* License: To be determined
* Authors: Mike Wey
*/
module dmagick.Geometry;
import std.conv;
import std.ctype;
import std.string;
import core.sys.posix.sys.types;
import dmagick.c.geometry;
import dmagick.c.magickString;
import dmagick.c.magickType;
struct Geometry
{
size_t width;
size_t height;
ssize_t xOffset;
ssize_t yOffset;
bool percent;
bool minimum;
bool keepAspect = true;
bool greater;
bool less;
this(string geometry)
{
MagickStatusType flags;
//If the string starts with a letter assume it's a Page Geometry.
if ( isalpha(geometry[0]) )
{
char* geo = GetPageGeometry(toStringz(geometry));
if( geo !is null )
{
geometry = to!(string)(geo);
DestroyString(geo);
}
}
flags = GetGeometry(toStringz(geometry), &xOffset, &yOffset, &width, &height);
percent = ( flags & GeometryFlags.PercentValue ) != 0;
minimum = ( flags & GeometryFlags.MinimumValue ) != 0;
keepAspect = ( flags & GeometryFlags.AspectValue ) == 0;
greater = ( flags & GeometryFlags.GreaterValue ) != 0;
less = ( flags & GeometryFlags.LessValue ) != 0;
}
unittest
{
Geometry geo = Geometry("200x150-50+25!");
assert( geo.width == 200 && geo.xOffset == -50 );
assert( geo.keepAspect == false );
geo = Geometry("A4");
assert( geo.width == 595 && geo.height == 842);
}
this(size_t width, size_t height, ssize_t xOffset, ssize_t yOffset)
{
this.width = width;
this.height = height;
this.xOffset = xOffset;
this.yOffset = yOffset;
}
string toString()
{
string geometry;
if ( width > 0 )
geometry ~= to!(string)(width);
if ( height > 0 )
geometry ~= "x" ~ to!(string)(height);
if ( xOffset != 0 && yOffset != 0 )
geometry ~= format("%+s%+s", xOffset, yOffset);
geometry ~= format("%s%s%s%s%s",
percent ? "%" : "",
minimum ? "^" : "",
keepAspect ? "" : "!",
less ? "<" : "",
greater ? ">" : "");
return geometry;
}
unittest
{
Geometry geo = Geometry("200x150-50+25!");
assert( geo.toString == "200x150-50+25!");
}
int opCmp(ref const Geometry geometry)
{
return width*height - geometry.width*geometry.height;
}
}
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