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ImageMap Class Reference

A collection of regions that react to clicks and mouseovers. More...

#include <imgmap.h>

Inheritance diagram for ImageMap:

[legend]Collaboration diagram for ImageMap:

[legend]List of all members.

Public Methods
void	seek_over ()
	Finds the region that the mouse is currently over and sets the appropriate member.
void	set_watcher (Watcher< ImageMap > &my_watch)
	Sets the watcher that will watch this TreeView.
void	me_modified ()
gint	motion_notify_event_impl (GdkEventMotion *event)
	Updates the information about which region the pointer is over.
gint	button_press_event_impl (GdkEventButton *event)
	Updates the display when a mouse button is clicked.
gint	enter_notify_event_impl (GdkEventCrossing *event)
	Updates the display when the mouse enters the map area.
gint	leave_notify_event_impl (GdkEventCrossing *event)
	Updates the display when the mouse leaves the map area.
virtual bool	clicked (EntryRect const *, int button)=0
virtual void	hover (EntryRect const *)
virtual void	left ()
virtual void	entered ()
Protected Attributes
EntryRect *	over_rect
bool	mouse_in
std::vector< EntryRect >	rectangles

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Detailed Description

A collection of regions that react to clicks and mouseovers.

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Member Function Documentation

void ImageMap::seek_over (    )

Finds the region that the mouse is currently over and sets the appropriate member. { int x=mouse_x; int y=mouse_y; if (over_rect!=NULL && over_rect->contains(x, y)) return; for (size_t i=0; i<rectangles.size(); ++i) { if (rectangles[i].contains(x, y)) { over_rect=&rectangles[i]; me_modified(); return; } } over_rect=NULL; }

void ImageMap::set_watcher (  Watcher< ImageMap > &    my_watch )

Sets the watcher that will watch this TreeView. Parameters: my_watch  The watcher { this->my_watch=&my_watch; }

void ImageMap::me_modified (    )  [inline]

{ if (my_watch!=NULL) my_watch->modified(*this); }

gint ImageMap::motion_notify_event_impl (  GdkEventMotion *    event )

Updates the information about which region the pointer is over. Parameters: event  The event containing information about the xy coordinates of the pointer return true (event handled) { int x, y; GdkModifierType state; Gdk_Window window(event->window); if (event->window); if (event->is_hint) window.get_pointer (x,y,state); else { x=(int)event->x; y=(int)event->y; state=(GdkModifierType) event->state; } mouse_x=x; mouse_y=y; EntryRect *old_over=over_rect; seek_over(); //if (over_rect!=old_over) hover(over_rect); if (over_rect!=old_over && over_rect!=NULL) over_rect->hover(); DrawingArea::motion_notify_event_impl(event); return true; }

gint ImageMap::button_press_event_impl (  GdkEventButton *    event )

Updates the display when a mouse button is clicked. Parameters: event  The information about the click event \ { DrawingArea::button_press_event_impl(event); clicked(over_rect, event->button); return true; }

gint ImageMap::enter_notify_event_impl (  GdkEventCrossing *    event )

Updates the display when the mouse enters the map area. Parameters: event  Unused (but required by gtkmm) { mouse_in=true; entered(); DrawingArea::leave_notify_event_impl(event); return true; }

gint ImageMap::leave_notify_event_impl (  GdkEventCrossing *    event )

Updates the display when the mouse leaves the map area. Parameters: event  Unused (but required by gtkmm) { if (event==NULL) return false; if (!DrawingArea::leave_notify_event_impl(event)) mouse_in=false; me_modified(); return false; }

virtual bool ImageMap::clicked (  EntryRect const *   , int    button )  [pure virtual]

Implemented in TreeView.

void ImageMap::hover (  EntryRect const *    )  [virtual]

{ me_modified(); }

void ImageMap::left (    )  [virtual]

{ me_modified(); }

void ImageMap::entered (    )  [virtual]

{ me_modified(); }

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Member Data Documentation

EntryRect* ImageMap::over_rect [protected]

bool ImageMap::mouse_in [protected]

std::vector<EntryRect> ImageMap::rectangles [protected]

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The documentation for this class was generated from the following files:

• imgmap.h
• imgmap.cpp

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