You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
281 lines
9.7 KiB
281 lines
9.7 KiB
//
|
|
// pageSize.h
|
|
//
|
|
// Part of KVIEWSHELL - A framework for multipage text/gfx viewers
|
|
//
|
|
// (C) 2002-2005 Stefan Kebekus
|
|
// Distributed under the GPL
|
|
|
|
// Add header files alphabetically
|
|
|
|
#ifndef PAGESIZE_H
|
|
#define PAGESIZE_H
|
|
|
|
#include "simplePageSize.h"
|
|
|
|
#include <tqobject.h>
|
|
|
|
class TQString;
|
|
class TQStringList;
|
|
|
|
|
|
/* \brief This class represents physical page sizes.
|
|
|
|
The main difference to the SimplePageSize class are the following.
|
|
|
|
- This class knows about standard page sizes and accepts page sizes in
|
|
various formats, e.g. as a string "DIN A4", or by specifiying the
|
|
page width and height. Several units (inch, millimeters,
|
|
centimeters) are possible.
|
|
|
|
- It is made sure that page width an hight are always in a resonable
|
|
range, which is currently set to 5cm .. 50cm
|
|
|
|
- The default constructor provides a locale-depending default.
|
|
|
|
@author Stefan Kebekus <kebekus@kde.org>
|
|
@version 1.0.0
|
|
*/
|
|
|
|
class pageSize : public TQObject, public SimplePageSize
|
|
{
|
|
TQ_OBJECT
|
|
|
|
|
|
public:
|
|
/** \brief Default constructor, initializes the pageSize with a
|
|
reasonable default
|
|
|
|
The default chosen depends on the locale. At the moment, A4 size
|
|
is chosen for countries with metric measurement system, and US
|
|
letter otherwise.
|
|
*/
|
|
pageSize();
|
|
|
|
/** \brief Initializes the pageSize with a SimplePageSize. */
|
|
pageSize(const SimplePageSize&);
|
|
|
|
/** \brief List of standard pageSizes
|
|
|
|
This method returns the names of standard pageSizes,
|
|
e.g. "A4". These can be used, e.g., by a TQComboBox to let the user
|
|
choose known sizes. The returned list is also a list of all possible
|
|
return values of the formatName() method explained below. If you
|
|
call pageSizeNames() more than once, it is guaranteed that the
|
|
same list of strings will be returned.
|
|
|
|
@returns TQStringList that contains
|
|
*/
|
|
TQStringList pageSizeNames();
|
|
|
|
/** \brief Set page size by name.
|
|
|
|
Acceptable strings are
|
|
|
|
(1) a name from the list retured by pageSizeNames(), such as "DIN
|
|
A4"
|
|
|
|
(2) a string like "500x300", which describes a page of width 500mm
|
|
and height 300mm.
|
|
|
|
(3) a string like "3in, 4 cm". A number of different units,
|
|
including "in", "mm" and "cm", and a few typographical units are
|
|
recognized
|
|
|
|
If the name is not of these types, and error message is printed to
|
|
stderr using kdError() and a default value, which depends on the
|
|
locale, is set.
|
|
|
|
In any case, the values will be trimmed so as not to exceed the
|
|
minima/maxima of 5cm and 50cm, respectively. If the page size found
|
|
matches one of the standard sizes by an error of no more than 2mm,
|
|
the standard page size will be set. The signal sizeChanged() will
|
|
always be emitted.
|
|
|
|
@param name string that represents the page size
|
|
|
|
@returns 'True', if the parameter could be parsed, and 'false'
|
|
otherwise.
|
|
*/
|
|
bool setPageSize(const TQString& name);
|
|
|
|
/** \brief Set page size from width and height strings
|
|
|
|
Sets the page size to "width" and "height", given in the associated
|
|
units. Currently, "mm", "cm" and "in" are supported. If a unit is
|
|
not recognized, "mm" is siliently assumed, and error message is
|
|
printed to stderr using kdError(). If the page size set matches one
|
|
of the standard sizes by an error of no more than 2mm, the standard
|
|
page size will be set. If width or height does not contain a
|
|
number, the result is an undefined value. However, it is guaranteed
|
|
in any case that both width and height are between the minimal and
|
|
maximal possible values, i.e. in the range 5..50 cm. If the newly
|
|
set value differs from the old value by more that 2mm for width or
|
|
height, the signal sizeChanged() will be emitted
|
|
|
|
@param width string that represents the page width as a number,
|
|
e.g., " 300 "
|
|
|
|
@param widthUnits units for the width string. Currently "mm", "cm"
|
|
and "in" are allowed.
|
|
|
|
@param height string that represents the page height as a number,
|
|
e.g., " 300 "
|
|
|
|
@param heightUnits units for the height string. Currently "mm", "cm"
|
|
and "in" are allowed.
|
|
*/
|
|
void setPageSize(const TQString& width, const TQString& widthUnits, const TQString& height, const TQString& heightUnits);
|
|
|
|
/** \brief Set page size
|
|
|
|
Sets the page size to "width" and "height", given in millimeter. If
|
|
the page size set matches one of the standard sizes by an error of
|
|
no more than 2mm, the standard page size will be set. Values are
|
|
trimmed so that both width and height are between the minimal and
|
|
maximal possible values, i.e. in the range 5..50 cm. If the newly
|
|
set value differs from the old value by more that 2mm for width or
|
|
height, the signal sizeChanged() will be emitted
|
|
|
|
@param width_in_mm page width in mm
|
|
|
|
@param height_in_mm page height in mm
|
|
*/
|
|
virtual void setPageSize(double width_in_mm, double height_in_mm);
|
|
|
|
/** \brief Copy operator.
|
|
|
|
This operator will emit the signal sizeChanged() if one of the
|
|
dimensions of *this and src differ by more than two millimeters.
|
|
*/
|
|
pageSize & operator= (const pageSize &src);
|
|
|
|
/** \brief Preferred unit for the current page size
|
|
|
|
@returns The name of the unit, one of "cm", "mm" or "in", which is
|
|
most commonly used with the current page format. For instance,
|
|
US Letter and US Legal are best given in inches, to avoid very
|
|
odd numbers. If the page format is unknown, returns a guess
|
|
based on the current locale. */
|
|
TQString preferredUnit() const;
|
|
|
|
/** \brief Returns the page width as a string
|
|
|
|
@param unit The unit in which the page width shall be returned. This
|
|
must be one of "cm", "mm" or "in".
|
|
|
|
@returns a string containing a number, e.g. "3.1415", which gives the page
|
|
width in the given unit. If the unit is not recognized, the string "--" is returned.
|
|
*/
|
|
TQString widthString(const TQString& unit) const;
|
|
|
|
/** \brief Returns the page height as a string
|
|
|
|
@param unit The unit in height the page width shall be
|
|
returned. This must be one of "cm", "mm" or "in".
|
|
|
|
@returns a string containing a number which gives the page height in
|
|
the given unit. If the unit is not recognized, the string "--" is
|
|
returned.
|
|
*/
|
|
TQString heightString(const TQString& unit) const;
|
|
|
|
/** \brief Returns a name for the page size, if this is a standard
|
|
size
|
|
|
|
@warning This method does not take care of orientation, e.g. it
|
|
will return "DIN A4" if the page size is either 210x297 or
|
|
297x210.
|
|
|
|
@returns A name for the current page size, if the format has a
|
|
name, or TQString() otherwise. If the result is not
|
|
TQString(), it is guaranteed to be one of the strings
|
|
returned by the pageSizeNames() method.
|
|
*/
|
|
TQString formatName() const;
|
|
|
|
/** \brief Returns an number for the page size, if this is a
|
|
standard size
|
|
|
|
@warning This method does not take care of orientation, e.g. it
|
|
will return the same value if the page size is either 210x297 or
|
|
297x210.
|
|
|
|
@returns If the current format is one of the standard sizes, a
|
|
non-negative integer is returned, which is an index to the
|
|
TQStringList returned by the pageSizeNames() method. If the
|
|
current format is none of the standard sizes, -1 is returned.
|
|
*/
|
|
int formatNumber() const {return currentSize;}
|
|
|
|
/** \brief Gets orientation for standard sizes
|
|
|
|
If the pageSize is one of the standard sizes, i.e. formatNumber() !=
|
|
-1, this method can be used to get the orientation. If the pageSize
|
|
is not a standard size, this method prints an error message stderr
|
|
using kdError().
|
|
|
|
@returns 0 for 'portrait', or 1 for 'landscape'. If the size is none
|
|
of the standard sizes, an undefined value is returned.
|
|
*/
|
|
int getOrientation() const;
|
|
|
|
/** \brief Returns a string that can be read by setPageSize(TQString)
|
|
|
|
@returns This method returns a string like "210x297". The numbers
|
|
are page width and height in millimeters. The setPageSize(TQString)
|
|
method will understand this output.
|
|
*/
|
|
TQString serialize() const;
|
|
|
|
public slots:
|
|
/** \brief Sets orientation
|
|
|
|
If the pageSize is one of the standard sizes, i.e. formatNumber() !=
|
|
-1, this method can be used to set the orientation. If the pageSize
|
|
is not a standard size, this method prints an error message stderr
|
|
using kdError() and does nothing.
|
|
|
|
@param orient 0 sets 'portrait orientation', 1 sets 'landscape'
|
|
*/
|
|
void setOrientation(int orient);
|
|
|
|
signals:
|
|
/** \brief Signal emitted when the page sizes changes
|
|
|
|
emitted to indicate that the size changed. Not emitted immediately
|
|
after construction, when the constructor sets the default
|
|
size.
|
|
|
|
@param t a pointer to this
|
|
*/
|
|
void sizeChanged(const SimplePageSize& t);
|
|
|
|
private:
|
|
/** Makes sure that pageWidth and pageHeight are in the permissible
|
|
range and not, e.g., negative. */
|
|
void rectifySizes();
|
|
|
|
/** Tries to find one of the known sizes which matches pageWidth and
|
|
pageHeight, with an error margin of 2 millimeters. If found, the
|
|
value of 'currentsize' is set to point to the known size, and
|
|
pageWidth and pageHeight are set to the correct values for that
|
|
size. Otherwise, currentSize is set to -1 to indicate "custom
|
|
size". Note: this method does not take care of orientation,
|
|
e.g. the method will set 'currentsize' to point to "DIN A4" if
|
|
either the page size is 210x297 or 297x210. */
|
|
void reconstructCurrentSize();
|
|
|
|
/** Gives a default value for currentSize, which depends on the
|
|
locale. In countries with metric system, this will be "DIN A4",
|
|
in countries with the imperial system, "US Letter". */
|
|
int defaultPageSize();
|
|
|
|
/** Permissible range: 0--#Size_of_array staticList, or -1 to
|
|
indicate a "user defined setting". Other values may lead to a
|
|
segfault. */
|
|
int currentSize;
|
|
};
|
|
|
|
#endif
|