12b57e84e6
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207 lines
4.4 KiB
C++
207 lines
4.4 KiB
C++
/*
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* This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>.
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* It is copyright by its individual contributors, as recorded in the
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* project's Git history. See COPYING.txt at the top level for license
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* terms and a link to the Git history.
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*/
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/*
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* A 'window' is simply a canvas that can receive events.
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* It can be anything from a simple message box to the
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* game screen when playing.
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*
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* See event.c for event handling code.
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*
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* -kreator 2009-05-06
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*/
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#include "gr.h"
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#include "window.h"
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#include "u_mem.h"
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#include "dxxerror.h"
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#include "event.h"
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namespace dcx {
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static window *FrontWindow = nullptr;
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static window *FirstWindow = nullptr;
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window::window(grs_canvas &src, const int x, const int y, const int w, const int h) :
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// Default to visible and modal
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w_visible(1), w_modal(1), prev(FrontWindow), next(nullptr), w_exists(nullptr)
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{
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gr_init_sub_canvas(w_canv, src, x, y, w, h);
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if (FirstWindow == nullptr)
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FirstWindow = this;
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}
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void window::send_creation_events(const void *const createdata)
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{
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const auto prev_front = window_get_front();
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if (FrontWindow)
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FrontWindow->next = this;
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FrontWindow = this;
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if (prev_front)
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{
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const d_event event{EVENT_WINDOW_DEACTIVATED};
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WINDOW_SEND_EVENT(prev_front);
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}
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{
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const d_create_event event{EVENT_WINDOW_CREATED, createdata};
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WINDOW_SEND_EVENT(this);
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}
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{
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const d_event event{EVENT_WINDOW_ACTIVATED};
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WINDOW_SEND_EVENT(this);
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}
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}
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window::~window()
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{
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if (w_exists)
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*w_exists = false;
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if (this == FrontWindow)
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FrontWindow = this->prev;
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if (this == FirstWindow)
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FirstWindow = this->next;
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if (this->next)
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this->next->prev = this->prev;
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if (this->prev)
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this->prev->next = this->next;
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}
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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) :
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window(src, x, y, w, h),
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w_callback((assert(event_callback != nullptr), event_callback)), w_data(data)
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{
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}
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window_event_result callback_window::event_handler(const d_event &event)
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{
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return w_callback(this, event, w_data);
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}
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int window_close(window *wind)
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{
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window *prev;
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window_event_result result;
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if (wind == window_get_front())
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{
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const d_event event{EVENT_WINDOW_DEACTIVATED};
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WINDOW_SEND_EVENT(wind); // Deactivate first
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}
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{
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const d_event event{EVENT_WINDOW_CLOSE};
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result = WINDOW_SEND_EVENT(wind);
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}
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if (result == window_event_result::handled)
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{
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// User 'handled' the event, cancelling close
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if (wind == window_get_front())
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{
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const d_event event{EVENT_WINDOW_ACTIVATED};
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WINDOW_SEND_EVENT(wind);
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}
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return 0;
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}
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menu_destroy_hook(wind);
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if (result != window_event_result::deleted) // don't attempt to re-delete
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delete wind;
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if ((prev = window_get_front()))
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{
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const d_event event{EVENT_WINDOW_ACTIVATED};
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WINDOW_SEND_EVENT(prev);
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}
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return 1;
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}
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// Get the top window that's visible
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window *window_get_front(void)
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{
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window *wind;
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for (wind = FrontWindow; (wind != NULL) && !wind->w_visible; wind = wind->prev) {}
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return wind;
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}
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window *window_get_first(void)
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{
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return FirstWindow;
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}
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// Make wind the front window
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void window_select(window &wind)
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{
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window *prev = window_get_front();
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if (&wind == FrontWindow)
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return;
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if (&wind == FirstWindow && wind.next)
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FirstWindow = FirstWindow->next;
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if (wind.next)
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wind.next->prev = wind.prev;
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if (wind.prev)
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wind.prev->next = wind.next;
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wind.prev = FrontWindow;
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FrontWindow->next = &wind;
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wind.next = nullptr;
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FrontWindow = &wind;
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if (wind.is_visible())
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{
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if (prev)
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{
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const d_event event{EVENT_WINDOW_DEACTIVATED};
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WINDOW_SEND_EVENT(prev);
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}
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const d_event event{EVENT_WINDOW_ACTIVATED};
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WINDOW_SEND_EVENT(&wind);
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}
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}
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window *window_set_visible(window &w, int visible)
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{
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window *prev = window_get_front();
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w.w_visible = visible;
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auto wind = window_get_front(); // get the new front window
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if (wind == prev)
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return wind;
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if (prev)
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{
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const d_event event{EVENT_WINDOW_DEACTIVATED};
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WINDOW_SEND_EVENT(prev);
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}
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if (wind)
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{
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const d_event event{EVENT_WINDOW_ACTIVATED};
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WINDOW_SEND_EVENT(wind);
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}
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return wind;
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}
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#if !DXX_USE_OGL
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void window_update_canvases()
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{
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window *wind;
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for (wind = FirstWindow; wind != NULL; wind = wind->next)
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gr_init_sub_bitmap (wind->w_canv.cv_bitmap,
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*wind->w_canv.cv_bitmap.bm_parent,
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wind->w_canv.cv_bitmap.bm_x,
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wind->w_canv.cv_bitmap.bm_y,
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wind->w_canv.cv_bitmap.bm_w,
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wind->w_canv.cv_bitmap.bm_h);
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}
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#endif
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}
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