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#ifndef __lib_gui_ewidget_h
#define __lib_gui_ewidget_h
#include <lib/gdi/grc.h> /* for gRegion */
#include <lib/base/eptrlist.h> /* for eSmartPtrList */
#include <lib/gui/ewindowstyle.h> /* for eWindowStyle */
class eWidget
{
friend class eWidgetDesktop;
public:
eWidget(eWidget *parent);
void move(ePoint pos);
void resize(eSize size);
ePoint position() const { return m_position; }
eSize size() const { return m_size; }
void invalidate(const gRegion ®ion = gRegion::invalidRegion());
/* the window were to attach childs to. Normally, this
is "this", but it can be overridden in case a widget
has a "client area", which is implemented as a child
widget. eWindow overrides this, for example. */
virtual eWidget *child() { return this; }
void show();
void hide();
void destruct();
int getStyle(ePtr<eWindowStyle> &style) { if (!m_style) return 1; style = m_style; return 0; }
void setStyle(eWindowStyle *style) { m_style = style; }
void setBackgroundColor(const gRGB &col);
void clearBackgroundColor();
/* untested code */
int isVisible() { return (m_vis & wVisShow) && ((!m_parent) || m_parent->isVisible()); }
/* ... */
private:
eWidgetDesktop *m_desktop;
enum {
wVisShow = 1,
wVisTransparent = 2,
};
int m_vis;
ePtrList<eWidget> m_childs;
ePoint m_position;
eSize m_size;
eWidget *m_parent;
ePtr<eWindowStyle> m_style;
void doPaint(gPainter &painter, const gRegion ®ion);
void recalcClipRegionsWhenVisible();
gRGB m_background_color;
int m_have_background_color;
eWidget *m_current_focus, *m_focus_owner;
protected:
virtual ~eWidget();
void mayKillFocus();
public:
// all in local space!
gRegion m_clip_region, m_visible_region, m_visible_with_childs;
enum eWidgetEvent
{
evtPaint,
evtKey,
evtChangedPosition,
evtChangedSize,
evtWillShow,
evtWillHide,
evtWillChangePosition, /* new size is eRect *data */
evtWillChangeSize,
evtAction,
evtFocusGot,
evtFocusLost,
evtUserWidget,
};
virtual int event(int event, void *data = 0, void *data2 = 0);
void setFocus(eWidget *focus);
};
extern eWidgetDesktop *getDesktop();
#endif
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