namespace uta class Widget : public SigC Object, public Rect

Widget Baseclass

Inheritance:

Public Fields

SigC::Signal0 <void> deleted

SigC::Signal0 <void> exposed

SigC::Signal0 <void> hidden

SigC::Signal0 <void> enabled

SigC::Signal0 <void> disabled

SigC::Signal0 <void> gainedMouse

SigC::Signal0 <void> lostMouse

SigC::Signal0 <void> gainedKeyboard

SigC::Signal0 <void> lostKeyboard

Public Methods

Widget()

Widget(Widget* parent, int x, int y, int w, int h)

virtual ~Widget()

void setBackground(const Surface* backgrnd, bool tileIt = true)

Set background image

void setColor(const Color &color)

setting background color.

void setDisabledColor(const Color& color)

to set the background colour when the widget is disabled

void setAlpha(unsigned char)

void setDisabledAlpha(unsigned char)

void setAutoDelete(bool yes)

Set autodelete flag

void setTransparency(bool flag)

virtual void update()

screen update

void show()

show up this widget and itīs childs.

void hide()

hide this widget and itīs childs.

void close()

close this widget and itīs childs.

void enable()

enable this widget tree

void disable()

disable this widget tree

void forceUpdate(int)

virtual void blit()

just blit to the parentīs surface

bool handleEvent(const Event*)

virtual bool processEvent(const Event*)

bool needsUpdate()

widget content has changed

bool isHidden() const

bool isClosed() const

bool isEnabled() const

bool hasFocus() const

bool isAutoDelete() const

Surface* insertChild(Widget* child)

insert a child widget

void removeChild(Widget* child)

void deParent()

like removeChild, but the other way

Rect getRect()

return geometry

Rect globalCoord(Rect)

convert rect coords to global rect coords

Rect localCoord(Rect)

convert global rect coords to local rect coords

void addUpdateRects(std::list<Rect> &updateRects)

bool releaseFocus()

bool grabFocus()

void setClickToFocus(bool val)

void setPointToFocus(bool val)

void nextFocus()

void prevFocus()

Protected Fields

Widget* parent_

the parent

Rect rect_

destination rectangle

Rect window_

window rect

const Surface* backgrnd_

background image

Surface* surface_

surface buffer

Surface* parentSurface_

destination surface

Surface* backBuffer_

backbuffer

Color color_

background color.

bool haveFocus_

true when the mouse is over this widget

bool drawBackground_

have we got a background surface ?

bool needsUpdate_

true if this widgets needs to be reblitted to itīs parentīs surface

bool needsReblit_

bool hidden_

bool hideRequest_

bool closed_

bool disabled_

bool disableRequest_

bool destroyWidget_

self delete when closing ?

std::list <Widget*> childs_

child list.

std::list <Rect> dirtyRects_

list of dirty rects

bool tileBackground_

bool autoDelete_

shall the widget be deleted, when closed ? default = yes

bool activateOnMouse_

bool activateOnClick_

std::list <Widget*> focusList_

std::list <Widget*> ::iterator currentFocus_

bool mouseFocus_

Protected Methods

virtual void create()

create the widget and childs

virtual void initMembers()

virtual void blit_complete(Surface*)

blit whole widget

virtual void blit_dirty(Surface*)

blit only dirty rects

void createChild()

create child widget

bool acceptsFocus() const

Inherited from Rect:

Public Fields

static Rect invalid

static Rect empty

Public Methods

bool isEmpty() const

bool isValid() const

bool contains( const Point &p ) const

bool contains( const Rect &r ) const

virtual void translate( int dx, int dy )

virtual void warp(const Point &newUpperLeft)

virtual void resize(int w, int h)

Rect unite( const Rect &r ) const

Rect intersect( const Rect &r) const

const Point& upperLeft() const

const Point& lowerRight() const

int width() const

int height() const

friend bool operator==(const Rect &p, const Rect &q)

friend bool operator<(const Rect &p, const Rect &q)

friend ostream& operator<<(ostream& s, const Rect& p)

Protected Fields

Point upperLeft_

Point lowerRight_

Widget()

Widget(Widget* parent, int x, int y, int w, int h)

virtual ~Widget()

SigC::Signal0 <void> deleted

SigC::Signal0 <void> exposed

SigC::Signal0 <void> hidden

SigC::Signal0 <void> enabled

SigC::Signal0 <void> disabled

SigC::Signal0 <void> gainedMouse

SigC::Signal0 <void> lostMouse

SigC::Signal0 <void> gainedKeyboard

SigC::Signal0 <void> lostKeyboard

void setBackground(const Surface* backgrnd, bool tileIt = true)

Set background image. The surface is NOT copied. you will have to ensure it is accesible as long as this widget lives. (use Resources...) If tileIt is true, the image will be tiled if the surface is smaller than the widget; otherwise it gets scaled to fit the size.

void setColor(const Color &color)

setting background color.

void setDisabledColor(const Color& color)

to set the background colour when the widget is disabled

void setAlpha(unsigned char)

void setDisabledAlpha(unsigned char)

void setAutoDelete(bool yes)

Set autodelete flag. Normally if a widget gets deleted its constructor automatically deletes all its childs. If the autodelete flag is set false the widget gets not deleted upon its parent's destruction.

void setTransparency(bool flag)

virtual void update()

screen update

void show()

show up this widget and itīs childs.

void hide()

hide this widget and itīs childs.

void close()

close this widget and itīs childs.

void enable()

enable this widget tree

void disable()

disable this widget tree. The widget tree gets greyed and the member ignore any events.

void forceUpdate(int)

virtual void blit()

just blit to the parentīs surface

bool handleEvent(const Event*)

virtual bool processEvent(const Event*)

bool needsUpdate()

widget content has changed. this is called by the mainloop or parentwidget to test, whether this widget or one of itīs childs have to be reblitted.

bool isHidden() const

bool isClosed() const

bool isEnabled() const

bool hasFocus() const

bool isAutoDelete() const

Surface* insertChild(Widget* child)

insert a child widget. this is only to be called from the constructor of a childwidget. it will return the surface the child has to blit its own surface to

void removeChild(Widget* child)

void deParent()

like removeChild, but the other way

Rect getRect()

return geometry

Rect globalCoord(Rect)

convert rect coords to global rect coords

Rect localCoord(Rect)

convert global rect coords to local rect coords

void addUpdateRects(std::list<Rect> &updateRects)

bool releaseFocus()

bool grabFocus()

void setClickToFocus(bool val)

void setPointToFocus(bool val)

void nextFocus()

void prevFocus()

virtual void create()

create the widget and childs. must be overloaded by derived classes to implemented their own grafx, etc. (each derived class may call the baseclassīs create to handle the basic stuff like background painting)

virtual void initMembers()

virtual void blit_complete(Surface*)

blit whole widget. descendants may overwrite this in order to implement special blits. This methode gets called, if the whole widget needs to be redrawn to the screen. The target is usually the screenbuffer.

virtual void blit_dirty(Surface*)

blit only dirty rects. descendants may overwrite this in order to implement special blits. Check dirtyRects to see what parts need to be reblitted. The target is usually the screenbuffer.

Widget* parent_

the parent. if NULL this widget is toplevel

Rect rect_

destination rectangle. the coords are relative to the parentīs coords.

Rect window_

window rect. if local surface is bigger than destination rect; only this window is blitted.

const Surface* backgrnd_

background image. may be NULL

Surface* surface_

surface buffer

Surface* parentSurface_

destination surface. this widgets blits to this surface, whenever show is called

Surface* backBuffer_

backbuffer. stores background of transparent widgets.

Color color_

background color.

bool haveFocus_

true when the mouse is over this widget

bool drawBackground_

have we got a background surface ?

bool needsUpdate_

true if this widgets needs to be reblitted to itīs parentīs surface. a derived widget simply set this to true in order to get redrawn. This is handled completely by the baseclass.

bool needsReblit_

bool hidden_

bool hideRequest_

bool closed_

bool disabled_

bool disableRequest_

bool destroyWidget_

self delete when closing ?

void createChild()

create child widget

std::list <Widget*> childs_

child list.

std::list <Rect> dirtyRects_

list of dirty rects. this is used for faster redrawing; especially if the toplevel- widgets is big and only a small child-widgets needs to be redrawn.

bool tileBackground_

bool autoDelete_

shall the widget be deleted, when closed ? default = yes

bool activateOnMouse_

bool activateOnClick_

std::list <Widget*> focusList_

std::list <Widget*> ::iterator currentFocus_

bool acceptsFocus() const

bool mouseFocus_

Direct child classes:

RootWindow
Movie
ListBox
LineEdit
Label
Dialog

alphabetic index hierarchy of classes

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(c)opyright by Malte Zöckler, Roland Wunderling
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