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| Rev | Author | Line No. | Line |
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| 1 | pmbaty | 1 | /* |
| 2 | * This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>. |
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| 3 | * It is copyright by its individual contributors, as recorded in the |
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| 4 | * project's Git history. See COPYING.txt at the top level for license |
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| 5 | * terms and a link to the Git history. |
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| 6 | */ |
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| 7 | /* |
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| 8 | * A 'window' is simply a canvas that can receive events. |
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| 9 | * It can be anything from a simple message box to the |
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| 10 | * game screen when playing. |
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| 11 | * |
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| 12 | * See event.c for event handling code. |
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| 13 | * |
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| 14 | * -kreator 2009-05-06 |
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| 15 | */ |
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| 16 | |||
| 17 | #include "gr.h" |
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| 18 | #include "window.h" |
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| 19 | #include "u_mem.h" |
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| 20 | #include "dxxerror.h" |
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| 21 | #include "event.h" |
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| 22 | |||
| 23 | namespace dcx { |
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| 24 | |||
| 25 | static window *FrontWindow = nullptr; |
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| 26 | static window *FirstWindow = nullptr; |
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| 27 | |||
| 28 | window::window(grs_canvas &src, const int x, const int y, const int w, const int h) : |
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| 29 | // Default to visible and modal |
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| 30 | w_visible(1), w_modal(1), prev(FrontWindow), next(nullptr), w_exists(nullptr) |
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| 31 | { |
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| 32 | gr_init_sub_canvas(w_canv, src, x, y, w, h); |
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| 33 | |||
| 34 | if (FirstWindow == nullptr) |
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| 35 | FirstWindow = this; |
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| 36 | } |
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| 37 | |||
| 38 | void window::send_creation_events(const void *const createdata) |
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| 39 | { |
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| 40 | const auto prev_front = window_get_front(); |
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| 41 | if (FrontWindow) |
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| 42 | FrontWindow->next = this; |
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| 43 | FrontWindow = this; |
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| 44 | if (prev_front) |
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| 45 | { |
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| 46 | const d_event event{EVENT_WINDOW_DEACTIVATED}; |
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| 47 | WINDOW_SEND_EVENT(prev_front); |
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| 48 | } |
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| 49 | { |
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| 50 | const d_create_event event{EVENT_WINDOW_CREATED, createdata}; |
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| 51 | WINDOW_SEND_EVENT(this); |
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| 52 | } |
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| 53 | { |
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| 54 | const d_event event{EVENT_WINDOW_ACTIVATED}; |
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| 55 | WINDOW_SEND_EVENT(this); |
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| 56 | } |
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| 57 | } |
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| 58 | |||
| 59 | window::~window() |
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| 60 | { |
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| 61 | if (w_exists) |
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| 62 | *w_exists = false; |
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| 63 | if (this == FrontWindow) |
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| 64 | FrontWindow = this->prev; |
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| 65 | if (this == FirstWindow) |
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| 66 | FirstWindow = this->next; |
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| 67 | if (this->next) |
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| 68 | this->next->prev = this->prev; |
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| 69 | if (this->prev) |
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| 70 | this->prev->next = this->next; |
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| 71 | } |
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| 72 | |||
| 73 | 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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| 74 | window(src, x, y, w, h), |
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| 75 | w_callback((assert(event_callback != nullptr), event_callback)), w_data(data) |
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| 76 | { |
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| 77 | } |
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| 78 | |||
| 79 | window_event_result callback_window::event_handler(const d_event &event) |
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| 80 | { |
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| 81 | return w_callback(this, event, w_data); |
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| 82 | } |
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| 83 | |||
| 84 | int window_close(window *wind) |
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| 85 | { |
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| 86 | window *prev; |
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| 87 | window_event_result result; |
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| 88 | |||
| 89 | if (wind == window_get_front()) |
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| 90 | { |
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| 91 | const d_event event{EVENT_WINDOW_DEACTIVATED}; |
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| 92 | WINDOW_SEND_EVENT(wind); // Deactivate first |
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| 93 | } |
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| 94 | |||
| 95 | { |
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| 96 | const d_event event{EVENT_WINDOW_CLOSE}; |
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| 97 | result = WINDOW_SEND_EVENT(wind); |
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| 98 | } |
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| 99 | if (result == window_event_result::handled) |
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| 100 | { |
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| 101 | // User 'handled' the event, cancelling close |
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| 102 | if (wind == window_get_front()) |
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| 103 | { |
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| 104 | const d_event event{EVENT_WINDOW_ACTIVATED}; |
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| 105 | WINDOW_SEND_EVENT(wind); |
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| 106 | } |
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| 107 | return 0; |
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| 108 | } |
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| 109 | |||
| 110 | menu_destroy_hook(wind); |
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| 111 | |||
| 112 | if (result != window_event_result::deleted) // don't attempt to re-delete |
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| 113 | delete wind; |
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| 114 | |||
| 115 | if ((prev = window_get_front())) |
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| 116 | { |
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| 117 | const d_event event{EVENT_WINDOW_ACTIVATED}; |
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| 118 | WINDOW_SEND_EVENT(prev); |
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| 119 | } |
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| 120 | |||
| 121 | return 1; |
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| 122 | } |
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| 123 | |||
| 124 | // Get the top window that's visible |
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| 125 | window *window_get_front(void) |
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| 126 | { |
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| 127 | window *wind; |
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| 128 | |||
| 129 | for (wind = FrontWindow; (wind != NULL) && !wind->w_visible; wind = wind->prev) {} |
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| 130 | |||
| 131 | return wind; |
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| 132 | } |
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| 133 | |||
| 134 | window *window_get_first(void) |
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| 135 | { |
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| 136 | return FirstWindow; |
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| 137 | } |
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| 138 | |||
| 139 | // Make wind the front window |
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| 140 | void window_select(window &wind) |
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| 141 | { |
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| 142 | window *prev = window_get_front(); |
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| 143 | if (&wind == FrontWindow) |
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| 144 | return; |
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| 145 | if (&wind == FirstWindow && wind.next) |
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| 146 | FirstWindow = FirstWindow->next; |
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| 147 | |||
| 148 | if (wind.next) |
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| 149 | wind.next->prev = wind.prev; |
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| 150 | if (wind.prev) |
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| 151 | wind.prev->next = wind.next; |
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| 152 | wind.prev = FrontWindow; |
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| 153 | FrontWindow->next = &wind; |
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| 154 | wind.next = nullptr; |
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| 155 | FrontWindow = &wind; |
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| 156 | |||
| 157 | if (wind.is_visible()) |
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| 158 | { |
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| 159 | if (prev) |
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| 160 | { |
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| 161 | const d_event event{EVENT_WINDOW_DEACTIVATED}; |
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| 162 | WINDOW_SEND_EVENT(prev); |
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| 163 | } |
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| 164 | const d_event event{EVENT_WINDOW_ACTIVATED}; |
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| 165 | WINDOW_SEND_EVENT(&wind); |
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| 166 | } |
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| 167 | } |
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| 168 | |||
| 169 | window *window_set_visible(window &w, int visible) |
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| 170 | { |
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| 171 | window *prev = window_get_front(); |
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| 172 | w.w_visible = visible; |
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| 173 | auto wind = window_get_front(); // get the new front window |
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| 174 | if (wind == prev) |
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| 175 | return wind; |
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| 176 | |||
| 177 | if (prev) |
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| 178 | { |
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| 179 | const d_event event{EVENT_WINDOW_DEACTIVATED}; |
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| 180 | WINDOW_SEND_EVENT(prev); |
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| 181 | } |
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| 182 | |||
| 183 | if (wind) |
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| 184 | { |
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| 185 | const d_event event{EVENT_WINDOW_ACTIVATED}; |
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| 186 | WINDOW_SEND_EVENT(wind); |
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| 187 | } |
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| 188 | return wind; |
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| 189 | } |
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| 190 | |||
| 191 | #if !DXX_USE_OGL |
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| 192 | void window_update_canvases() |
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| 193 | { |
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| 194 | window *wind; |
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| 195 | |||
| 196 | for (wind = FirstWindow; wind != NULL; wind = wind->next) |
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| 197 | gr_init_sub_bitmap (wind->w_canv.cv_bitmap, |
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| 198 | *wind->w_canv.cv_bitmap.bm_parent, |
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| 199 | wind->w_canv.cv_bitmap.bm_x, |
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| 200 | wind->w_canv.cv_bitmap.bm_y, |
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| 201 | wind->w_canv.cv_bitmap.bm_w, |
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| 202 | wind->w_canv.cv_bitmap.bm_h); |
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| 203 | } |
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| 204 | #endif |
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| 205 | |||
| 206 | } |