2011-12-22 16:19:25 +01:00
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/*
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* \brief Loadbar widget
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* \author Norman Feske
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* \date 2006-08-30
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*/
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/*
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2017-02-20 13:23:52 +01:00
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* Copyright (C) 2006-2017 Genode Labs GmbH
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2011-12-22 16:19:25 +01:00
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*
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* This file is part of the Genode OS framework, which is distributed
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2017-02-20 13:23:52 +01:00
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* under the terms of the GNU Affero General Public License version 3.
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2011-12-22 16:19:25 +01:00
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*/
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#ifndef _LOADBAR_H_
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#define _LOADBAR_H_
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#include "widgets.h"
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#include "styles.h"
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#include "fade_icon.h"
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#include <base/printf.h>
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#include <base/snprintf.h>
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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#define LOADBAR_RGBA _binary_loadbar_rgba_start
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#define REDBAR_RGBA _binary_redbar_rgba_start
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#define WHITEBAR_RGBA _binary_whitebar_rgba_start
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2011-12-22 16:19:25 +01:00
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extern unsigned char LOADBAR_RGBA[];
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extern unsigned char REDBAR_RGBA[];
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extern unsigned char WHITEBAR_RGBA[];
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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struct Loadbar_listener
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2011-12-22 16:19:25 +01:00
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{
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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virtual ~Loadbar_listener() { }
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2011-12-22 16:19:25 +01:00
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|
|
Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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virtual void loadbar_changed(int mx) = 0;
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2011-12-22 16:19:25 +01:00
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};
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2013-12-30 01:21:53 +01:00
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class Loadbar_event_handler : public Scout::Event_handler
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2011-12-22 16:19:25 +01:00
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{
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private:
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|
Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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/*
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* Noncopyable
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*/
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Loadbar_event_handler(Loadbar_event_handler const &);
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Loadbar_event_handler &operator = (Loadbar_event_handler const &);
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2011-12-22 16:19:25 +01:00
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Loadbar_listener *_listener;
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public:
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Loadbar_event_handler(Loadbar_listener *listener):
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_listener(listener) { }
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/**
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* Event handler interface
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*/
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2016-11-23 17:07:49 +01:00
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void handle_event(Scout::Event const &ev) override
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2011-12-22 16:19:25 +01:00
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{
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static int key_cnt;
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2013-12-30 01:21:53 +01:00
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using Scout::Event;
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2011-12-22 16:19:25 +01:00
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if (ev.type == Event::PRESS) key_cnt++;
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if (ev.type == Event::RELEASE) key_cnt--;
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if (ev.type == Event::PRESS || ev.type == Event::MOTION)
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if (_listener && key_cnt > 0)
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2013-12-30 01:21:53 +01:00
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_listener->loadbar_changed(ev.mouse_position.x());
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2011-12-22 16:19:25 +01:00
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}
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};
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template <typename PT>
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2013-12-30 01:21:53 +01:00
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class Loadbar : public Scout::Parent_element
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2011-12-22 16:19:25 +01:00
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{
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private:
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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/*
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* Noncopyable
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*/
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Loadbar(Loadbar const &);
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Loadbar &operator = (Loadbar const &);
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2011-12-22 16:19:25 +01:00
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enum {
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_LW = 16,
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_LH = 16,
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};
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bool _active;
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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Scout::Fade_icon<PT, _LW, _LH> _cover { };
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Scout::Fade_icon<PT, _LW, _LH> _bar { };
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2011-12-22 16:19:25 +01:00
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Loadbar_event_handler _ev_handler;
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int _value;
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int _max_value;
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const char *_txt;
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int _txt_w, _txt_h, _txt_len;
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2013-12-30 01:21:53 +01:00
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Scout::Font *_font;
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2011-12-22 16:19:25 +01:00
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void _update_bar_geometry(int w)
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{
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2013-12-30 01:21:53 +01:00
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using namespace Scout;
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2011-12-22 16:19:25 +01:00
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int max_w = w - _LW;
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int bar_w = (_value * max_w) / _max_value;
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bar_w += _LW;
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2013-12-30 01:21:53 +01:00
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_bar.geometry(Rect(Point(_bar.position().x(), _bar.position().y()),
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Area(bar_w, _LH)));
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2011-12-22 16:19:25 +01:00
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}
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public:
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2013-12-30 01:21:53 +01:00
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Loadbar(Loadbar_listener *listener = 0, Scout::Font *font = 0):
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2011-12-22 16:19:25 +01:00
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_active(listener ? true : false),
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_ev_handler(listener),
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_value(0), _max_value(100),
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_txt(""), _txt_w(0), _txt_h(0), _txt_len(0),
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_font(font)
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{
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2013-12-30 01:21:53 +01:00
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using namespace Scout;
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_min_size = Area(_min_size.w(), _LH);
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2011-12-22 16:19:25 +01:00
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_cover.rgba(LOADBAR_RGBA);
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_cover.alpha(100);
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_cover.focus_alpha(150);
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_bar.rgba(_active ? REDBAR_RGBA : LOADBAR_RGBA);
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_bar.alpha(_active ? 150 : 255);
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_bar.default_alpha(150);
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if (_active)
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event_handler(&_ev_handler);
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append(&_cover);
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append(&_bar);
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}
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int value_by_xpos(int xpos)
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{
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xpos -= _LW/2;
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2013-12-30 01:21:53 +01:00
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int max_w = _size.w() - _LW;
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return Scout::max(Scout::min((_max_value * xpos) / max_w, _max_value), 0);
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2011-12-22 16:19:25 +01:00
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}
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int value() { return _value; }
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void value(int value)
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{
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2013-12-30 01:21:53 +01:00
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_value = Scout::max(Scout::min(value, _max_value), 0);
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_update_bar_geometry(_size.w());
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2011-12-22 16:19:25 +01:00
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}
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int max_value() { return _max_value; }
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void max_value(int max_value)
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{
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_max_value = max_value;
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2013-12-30 01:21:53 +01:00
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_update_bar_geometry(_size.w());
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2011-12-22 16:19:25 +01:00
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}
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void txt(const char *txt)
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{
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if (!_font) return;
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_txt = txt;
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2018-03-08 18:27:42 +01:00
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_txt_w = _font->string_width(_txt, Scout::strlen(_txt)).decimal();
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_txt_h = _font->bounding_box().h();
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2013-12-30 01:21:53 +01:00
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_txt_len = Scout::strlen(_txt);
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2011-12-22 16:19:25 +01:00
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}
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/**
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* Element interface
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*/
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void format_fixed_width(int w)
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{
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2013-12-30 01:21:53 +01:00
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using namespace Scout;
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_cover.geometry(Rect(Point(0, 0), Area(w, _LH)));
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2011-12-22 16:19:25 +01:00
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_update_bar_geometry(w);
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2013-12-30 01:21:53 +01:00
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_min_size = Scout::Area(w, _min_size.h());
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2011-12-22 16:19:25 +01:00
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}
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2013-12-30 01:21:53 +01:00
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void draw(Scout::Canvas_base &canvas, Scout::Point abs_position)
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2011-12-22 16:19:25 +01:00
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{
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2013-12-30 01:21:53 +01:00
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Parent_element::draw(canvas, abs_position);
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2011-12-22 16:19:25 +01:00
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if (!_font) return;
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2013-12-30 01:21:53 +01:00
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using namespace Scout;
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int txt_x = abs_position.x() + _position.x() + max((_size.w() - _txt_w)/2, 8UL);
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int txt_y = abs_position.y() + _position.y() + max((_size.h() - _txt_h)/2, 0UL) - 1;
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2011-12-22 16:19:25 +01:00
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/* shrink clipping area to text area (limit too long label) */
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2013-12-30 01:21:53 +01:00
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int cx1 = canvas.clip().x1(), cy1 = canvas.clip().y1();
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int cx2 = canvas.clip().x2(), cy2 = canvas.clip().y2();
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int nx1 = max(cx1, _position.x() + abs_position.x());
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int ny1 = max(cy1, _position.y() + abs_position.y());
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int nx2 = min(cx2, nx1 + (int)_size.w() - 8);
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int ny2 = min(cy2, ny1 + (int)_size.h());
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canvas.clip(Rect(Point(nx1, ny1), Area(nx2 - nx1 + 1, ny2 - ny1 + 1)));
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2011-12-22 16:19:25 +01:00
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2013-12-30 01:21:53 +01:00
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canvas.draw_string(txt_x , txt_y+1, _font, Color(0,0,0,150), _txt, strlen(_txt));
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canvas.draw_string(txt_x , txt_y, _font, Color(255,255,255,230), _txt, strlen(_txt));
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2011-12-22 16:19:25 +01:00
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/* reset clipping */
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2013-12-30 01:21:53 +01:00
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canvas.clip(Rect(Point(cx1, cy1), Area(cx2 - cx1 + 1, cy2 - cy1 + 1)));
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2011-12-22 16:19:25 +01:00
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}
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void mfocus(int flag)
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{
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if (!_active) return;
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_bar.mfocus(flag);
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_cover.mfocus(flag);
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}
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};
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template <typename PT>
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class Kbyte_loadbar : public Loadbar<PT>
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{
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private:
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char _label[32];
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void _print_kbytes(int kbytes, char *dst, int dst_len)
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{
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if (kbytes >= 10*1024)
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Genode::snprintf(dst, dst_len, "%d MByte", kbytes / 1024);
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else
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Genode::snprintf(dst, dst_len, "%d KByte", kbytes);
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}
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void _update_label()
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{
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char value_buf[16];
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char max_buf[16];
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_print_kbytes(Loadbar<PT>::value(), value_buf, sizeof(value_buf));
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_print_kbytes(Loadbar<PT>::max_value(), max_buf, sizeof(max_buf));
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Genode::snprintf(_label, sizeof(_label), "%s / %s", value_buf, max_buf);
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Loadbar<PT>::txt(_label);
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}
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public:
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2013-12-30 01:21:53 +01:00
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Kbyte_loadbar(Loadbar_listener *listener, Scout::Font *font = 0):
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2011-12-22 16:19:25 +01:00
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Loadbar<PT>(listener, font)
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{
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_label[0] = 0;
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_update_label();
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}
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void value(int val)
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{
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Loadbar<PT>::value(val);
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_update_label();
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}
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void max_value(int max_value)
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{
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Loadbar<PT>::max_value(max_value);
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_update_label();
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}
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};
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#endif
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