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OpenFace/lib/3rdParty/dlib/include/dlib/gui_widgets/drawable.cpp
unknown 57e58a6949 Master commit of OpenFace.
2016-04-28 15:40:36 -04:00

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// Copyright (C) 2005 Davis E. King (davis@dlib.net), Keita Mochizuki
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_DRAWABLe_CPP_
#define DLIB_DRAWABLe_CPP_
#include "drawable.h"
#include <algorithm>
namespace dlib
{
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// ----------- drawable_window object ------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
rgb_pixel drawable_window::
background_color (
) const
{
auto_mutex M(wm);
return bg_color;
}
// ----------------------------------------------------------------------------------------
void drawable_window::
set_background_color (
unsigned long red_,
unsigned long green_,
unsigned long blue_
)
{
wm.lock();
bg_color.red = red_;
bg_color.green = green_;
bg_color.blue = blue_;
wm.unlock();
// now repaint the window
unsigned long width,height;
get_size(width,height);
rectangle rect(0,0,width-1,height-1);
invalidate_rectangle(rect);
}
// ----------------------------------------------------------------------------------------
void drawable_window::
paint (
const canvas& c
)
{
++event_id;
c.fill(bg_color.red,bg_color.green,bg_color.blue);
widgets.reset();
while (widgets.move_next())
{
widgets.element().value().reset();
while (widgets.element().value().move_next())
{
// only dispatch a draw() call if this widget isn't hidden
if (widgets.element().value().element()->hidden == false &&
widgets.element().value().element()->event_id != event_id)
{
widgets.element().value().element()->event_id = event_id;
widgets.element().value().element()->draw(c);
}
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_user_event (
void* p,
int i
)
{
drawable* d = static_cast<drawable*>(p);
if (widget_set.is_member(d))
{
d->on_user_event(i);
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_window_moved(
)
{
++event_id;
window_moved.reset();
while (window_moved.move_next())
{
if (window_moved.element()->event_id != event_id)
{
window_moved.element()->event_id = event_id;
window_moved.element()->on_window_moved();
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_window_resized(
)
{
++event_id;
window_resized.reset();
while (window_resized.move_next())
{
if (window_resized.element()->event_id != event_id)
{
window_resized.element()->event_id = event_id;
window_resized.element()->on_window_resized();
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_keydown (
unsigned long key,
bool is_printable,
unsigned long state
)
{
++event_id;
keyboard.reset();
while (keyboard.move_next())
{
if (keyboard.element()->event_id != event_id)
{
keyboard.element()->event_id = event_id;
keyboard.element()->on_keydown(key,is_printable,state);
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_focus_gained (
)
{
++event_id;
focus.reset();
while (focus.move_next())
{
if (focus.element()->event_id != event_id)
{
focus.element()->event_id = event_id;
focus.element()->on_focus_gained();
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_focus_lost (
)
{
++event_id;
focus.reset();
while (focus.move_next())
{
if (focus.element()->event_id != event_id)
{
focus.element()->event_id = event_id;
focus.element()->on_focus_lost();
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_mouse_down (
unsigned long btn,
unsigned long state,
long x,
long y,
bool is_double_click
)
{
lastx = x;
lasty = y;
++event_id;
mouse_click.reset();
while (mouse_click.move_next())
{
if (mouse_click.element()->event_id != event_id)
{
mouse_click.element()->event_id = event_id;
mouse_click.element()->on_mouse_down(btn,state,x,y,is_double_click);
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_mouse_up (
unsigned long btn,
unsigned long state,
long x,
long y
)
{
lastx = x;
lasty = y;
++event_id;
mouse_click.reset();
while (mouse_click.move_next())
{
if (mouse_click.element()->event_id != event_id)
{
mouse_click.element()->event_id = event_id;
mouse_click.element()->on_mouse_up(btn,state,x,y);
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_mouse_move (
unsigned long state,
long x,
long y
)
{
lastx = x;
lasty = y;
++event_id;
mouse_move.reset();
while (mouse_move.move_next())
{
if (mouse_move.element()->event_id != event_id)
{
mouse_move.element()->event_id = event_id;
mouse_move.element()->on_mouse_move(state,x,y);
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_mouse_leave (
)
{
lastx = -1;
lasty = -1;
++event_id;
mouse_move.reset();
while (mouse_move.move_next())
{
if (mouse_move.element()->event_id != event_id)
{
mouse_move.element()->event_id = event_id;
mouse_move.element()->on_mouse_leave();
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_mouse_enter (
)
{
++event_id;
mouse_move.reset();
while (mouse_move.move_next())
{
if (mouse_move.element()->event_id != event_id)
{
mouse_move.element()->event_id = event_id;
mouse_move.element()->on_mouse_enter();
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_wheel_up (
unsigned long state
)
{
++event_id;
mouse_wheel.reset();
while (mouse_wheel.move_next())
{
if (mouse_wheel.element()->event_id != event_id)
{
mouse_wheel.element()->event_id = event_id;
mouse_wheel.element()->on_wheel_up(state);
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_wheel_down (
unsigned long state
)
{
++event_id;
mouse_wheel.reset();
while (mouse_wheel.move_next())
{
if (mouse_wheel.element()->event_id != event_id)
{
mouse_wheel.element()->event_id = event_id;
mouse_wheel.element()->on_wheel_down(state);
}
}
}
// ----------------------------------------------------------------------------------------
void drawable_window::
on_string_put (
const std::wstring &str
)
{
++event_id;
string_put.reset();
while (string_put.move_next())
{
if (string_put.element()->event_id != event_id)
{
string_put.element()->event_id = event_id;
string_put.element()->on_string_put(str);
}
}
}
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// ----------- drawable object ----------------------------------------------------------
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
void drawable::
enable_events (
)
{
auto_mutex M(m);
if (enabled_events == false)
{
enabled_events = true;
drawable* temp = this;
long zo = z_order_value;
drawable_window::set_of_drawables* sod = parent.widgets[zo];
if (sod == 0)
{
// this drawable is the first widget at this z order so we need
// to make its containing set
drawable_window::set_of_drawables s;
s.add(temp);
parent.widgets.add(zo,s);
}
else
{
sod->add(temp);
}
temp = this;
parent.widget_set.add(temp);
if (events & MOUSE_MOVE)
{
temp = this;
parent.mouse_move.add(temp);
}
if (events & MOUSE_CLICK)
{
temp = this;
parent.mouse_click.add(temp);
}
if (events & MOUSE_WHEEL)
{
temp = this;
parent.mouse_wheel.add(temp);
}
if (events & WINDOW_RESIZED)
{
temp = this;
parent.window_resized.add(temp);
}
if (events & KEYBOARD_EVENTS)
{
temp = this;
parent.keyboard.add(temp);
}
if (events & FOCUS_EVENTS)
{
temp = this;
parent.focus.add(temp);
}
if (events & WINDOW_MOVED)
{
temp = this;
parent.window_moved.add(temp);
}
if (events & STRING_PUT)
{
temp = this;
parent.string_put.add(temp);
}
parent.invalidate_rectangle(rect);
}
}
// ----------------------------------------------------------------------------------------
void drawable::
set_z_order (
long order
)
{
auto_mutex M(m);
if (order != z_order_value && enabled_events)
{
// first remove this drawable from widgets
drawable_window::set_of_drawables* sod = parent.widgets[z_order_value];
drawable* junk;
sod->remove(this,junk);
// if there are no more drawables at this z order then destroy the
// set for this order
if (sod->size() == 0)
parent.widgets.destroy(z_order_value);
// now add this drawable to its new z order
sod = parent.widgets[order];
if (sod == 0)
{
// this drawable is the first widget at this z order so we need
// to make its containing set
drawable_window::set_of_drawables s, x;
s.add(junk);
long temp_order = order;
parent.widgets.add(temp_order,s);
}
else
{
sod->add(junk);
}
parent.invalidate_rectangle(rect);
}
z_order_value = order;
}
// ----------------------------------------------------------------------------------------
void drawable::
disable_events (
)
{
auto_mutex M(m);
if (enabled_events)
{
enabled_events = false;
// first remove this drawable from widgets
drawable_window::set_of_drawables* sod = parent.widgets[z_order_value];
drawable* junk;
sod->remove(this,junk);
// if there are no more drawables at this z order then destroy the
// set for this order
if (sod->size() == 0)
parent.widgets.destroy(z_order_value);
parent.widget_set.remove(this,junk);
// now unregister this drawable from all the events it has registered for.
if (events & MOUSE_MOVE)
parent.mouse_move.remove(this,junk);
if (events & MOUSE_CLICK)
parent.mouse_click.remove(this,junk);
if (events & MOUSE_WHEEL)
parent.mouse_wheel.remove(this,junk);
if (events & WINDOW_RESIZED)
parent.window_resized.remove(this,junk);
if (events & KEYBOARD_EVENTS)
parent.keyboard.remove(this,junk);
if (events & FOCUS_EVENTS)
parent.focus.remove(this,junk);
if (events & WINDOW_MOVED)
parent.window_moved.remove(this,junk);
if (events & STRING_PUT)
parent.string_put.remove(this,junk);
}
}
// ----------------------------------------------------------------------------------------
drawable::
~drawable (
)
{
DLIB_ASSERT(events_are_enabled() == false,
"\tdrawable::~drawable()"
<< "\n\tYou must disable events for drawable objects in their destructor by calling disable_events()."
<< "\n\tthis: " << this
);
disable_events();
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_DRAWABLe_CPP_
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