/*
* This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>.
* It is copyright by its individual contributors, as recorded in the
* project's Git history. See COPYING.txt at the top level for license
* terms and a link to the Git history.
*/
/*
* A 'window' is simply a canvas that can receive events.
* It can be anything from a simple message box to the
* game screen when playing.
*
* See event.c for event handling code.
*
* -kreator 2009-05-06
*/
#include "gr.h"
#include "window.h"
#include "u_mem.h"
#include "dxxerror.h"
#include "event.h"
namespace dcx {
static window *FrontWindow = nullptr;
static window *FirstWindow = nullptr;
window::window(grs_canvas &src, const int x, const int y, const int w, const int h) :
// Default to visible and modal
w_visible(1), w_modal(1), prev(FrontWindow), next(nullptr), w_exists(nullptr)
{
gr_init_sub_canvas(w_canv, src, x, y, w, h);
if (FirstWindow == nullptr)
FirstWindow = this;
}
void window::send_creation_events(const void *const createdata)
{
const auto prev_front = window_get_front();
if (FrontWindow)
FrontWindow->next = this;
FrontWindow = this;
if (prev_front)
{
const d_event event{EVENT_WINDOW_DEACTIVATED};
WINDOW_SEND_EVENT(prev_front);
}
{
const d_create_event event{EVENT_WINDOW_CREATED, createdata};
WINDOW_SEND_EVENT(this);
}
{
const d_event event{EVENT_WINDOW_ACTIVATED};
WINDOW_SEND_EVENT(this);
}
}
window::~window()
{
if (w_exists)
*w_exists = false;
if (this == FrontWindow)
FrontWindow = this->prev;
if (this == FirstWindow)
FirstWindow = this->next;
if (this->next)
this->next->prev = this->prev;
if (this->prev)
this->prev->next = this->next;
}
callback_window::callback_window(grs_canvas &src, const int x, const int y, const int w, const int h, const window_subfunction<void> event_callback, void *const data) :
window(src, x, y, w, h),
w_callback((assert(event_callback != nullptr), event_callback)), w_data(data)
{
}
window_event_result callback_window::event_handler(const d_event &event)
{
return w_callback(this, event, w_data);
}
int window_close(window *wind)
{
window *prev;
window_event_result result;
if (wind == window_get_front())
{
const d_event event{EVENT_WINDOW_DEACTIVATED};
WINDOW_SEND_EVENT(wind); // Deactivate first
}
{
const d_event event{EVENT_WINDOW_CLOSE};
result = WINDOW_SEND_EVENT(wind);
}
if (result == window_event_result::handled)
{
// User 'handled' the event, cancelling close
if (wind == window_get_front())
{
const d_event event{EVENT_WINDOW_ACTIVATED};
WINDOW_SEND_EVENT(wind);
}
return 0;
}
menu_destroy_hook(wind);
if (result != window_event_result::deleted) // don't attempt to re-delete
delete wind;
if ((prev = window_get_front()))
{
const d_event event{EVENT_WINDOW_ACTIVATED};
WINDOW_SEND_EVENT(prev);
}
return 1;
}
// Get the top window that's visible
window *window_get_front(void)
{
window *wind;
for (wind = FrontWindow; (wind != NULL) && !wind->w_visible; wind = wind->prev) {}
return wind;
}
window *window_get_first(void)
{
return FirstWindow;
}
// Make wind the front window
void window_select(window &wind)
{
window *prev = window_get_front();
if (&wind == FrontWindow)
return;
if (&wind == FirstWindow && wind.next)
FirstWindow = FirstWindow->next;
if (wind.next)
wind.next->prev = wind.prev;
if (wind.prev)
wind.prev->next = wind.next;
wind.prev = FrontWindow;
FrontWindow->next = &wind;
wind.next = nullptr;
FrontWindow = &wind;
if (wind.is_visible())
{
if (prev)
{
const d_event event{EVENT_WINDOW_DEACTIVATED};
WINDOW_SEND_EVENT(prev);
}
const d_event event{EVENT_WINDOW_ACTIVATED};
WINDOW_SEND_EVENT(&wind);
}
}
window *window_set_visible(window &w, int visible)
{
window *prev = window_get_front();
w.w_visible = visible;
auto wind = window_get_front(); // get the new front window
if (wind == prev)
return wind;
if (prev)
{
const d_event event{EVENT_WINDOW_DEACTIVATED};
WINDOW_SEND_EVENT(prev);
}
if (wind)
{
const d_event event{EVENT_WINDOW_ACTIVATED};
WINDOW_SEND_EVENT(wind);
}
return wind;
}
#if !DXX_USE_OGL
void window_update_canvases()
{
window *wind;
for (wind = FirstWindow; wind != NULL; wind = wind->next)
gr_init_sub_bitmap (wind->w_canv.cv_bitmap,
*wind->w_canv.cv_bitmap.bm_parent,
wind->w_canv.cv_bitmap.bm_x,
wind->w_canv.cv_bitmap.bm_y,
wind->w_canv.cv_bitmap.bm_w,
wind->w_canv.cv_bitmap.bm_h);
}
#endif
}