00001
00002
00003 #include "../stdafx.h"
00004 #include "../openttd.h"
00005 #include "../strings_type.h"
00006 #include "../window_gui.h"
00007 #include "../strings_func.h"
00008 #include "../strings_type.h"
00009 #include "../gfx_func.h"
00010 #include "../window_func.h"
00011 #include "../core/math_func.hpp"
00012 #include "dropdown_type.h"
00013 #include "dropdown_func.h"
00014
00015 #include "../table/sprites.h"
00016 #include "table/strings.h"
00017
00018 StringID DropDownListItem::String() const
00019 {
00020 return STR_NULL;
00021 }
00022
00023 StringID DropDownListStringItem::String() const
00024 {
00025 return this->string;
00026 }
00027
00028 StringID DropDownListParamStringItem::String() const
00029 {
00030 for (uint i = 0; i < lengthof(this->decode_params); i++) SetDParam(i, this->decode_params[i]);
00031 return this->string;
00032 }
00033
00038 static void DeleteDropDownList(DropDownList *list)
00039 {
00040 for (DropDownList::iterator it = list->begin(); it != list->end(); ++it) {
00041 DropDownListItem *item = *it;
00042 delete item;
00043 }
00044 delete list;
00045 }
00046
00047 struct dropdown_d {
00048 WindowClass parent_wnd_class;
00049 WindowNumber parent_wnd_num;
00050 byte parent_button;
00051 DropDownList *list;
00052 int selected_index;
00053 byte click_delay;
00054 bool drag_mode;
00055 int scrolling;
00056 };
00057 assert_compile(WINDOW_CUSTOM_SIZE >= sizeof(dropdown_d));
00058
00059 static const Widget _dropdown_menu_widgets[] = {
00060 { WWT_PANEL, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_NULL},
00061 { WWT_SCROLLBAR, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_0190_SCROLL_BAR_SCROLLS_LIST},
00062 { WIDGETS_END},
00063 };
00064
00065 static int GetDropDownItem(const Window *w)
00066 {
00067 if (GetWidgetFromPos(w, _cursor.pos.x - w->left, _cursor.pos.y - w->top) < 0) return -1;
00068
00069 int y = _cursor.pos.y - w->top - 2 + w->vscroll.pos * 10;
00070 if (y < 0) return -1;
00071
00072 uint selected_row = y / 10;
00073 const DropDownList *list = WP(w, dropdown_d).list;
00074
00075 if (selected_row >= list->size()) return -1;
00076
00077 for (DropDownList::const_iterator it = list->begin(); it != list->end(); ++it, selected_row--) {
00078 if (selected_row == 0) {
00079 const DropDownListItem *item = *it;
00080 if (item->masked || item->String() == STR_NULL) return -1;
00081 return item->result;
00082 }
00083 }
00084
00085 return -1;
00086 }
00087
00088 static void DropDownMenuWndProc(Window *w, WindowEvent *e)
00089 {
00090 switch (e->event) {
00091 case WE_PAINT: {
00092 DrawWindowWidgets(w);
00093
00094 int x = 1;
00095 int y = 2 - w->vscroll.pos * 10;
00096
00097 int sel = WP(w, dropdown_d).selected_index;
00098 int width = w->widget[0].right - 3;
00099 int height = w->widget[0].bottom - 3;
00100
00101 DropDownList *list = WP(w, dropdown_d).list;
00102
00103 for (DropDownList::const_iterator it = list->begin(); it != list->end(); ++it) {
00104 if (y >= 0 && y <= height) {
00105 const DropDownListItem *item = *it;
00106 if (item->String() != STR_NULL) {
00107 if (sel == item->result) GfxFillRect(x + 1, y, x + width, y + 9, 0);
00108
00109 DrawStringTruncated(x + 2, y, item->String(), sel == item->result ? TC_WHITE : TC_BLACK, x + width);
00110
00111 if (item->masked) {
00112 GfxFillRect(x, y, x + width, y + 9,
00113 (1 << PALETTE_MODIFIER_GREYOUT) | _colour_gradient[w->widget[0].color][5]
00114 );
00115 }
00116 } else {
00117 int c1 = _colour_gradient[w->widget[0].color][3];
00118 int c2 = _colour_gradient[w->widget[0].color][7];
00119
00120 GfxFillRect(x + 1, y + 3, x + w->width - 5, y + 3, c1);
00121 GfxFillRect(x + 1, y + 4, x + w->width - 5, y + 4, c2);
00122 }
00123 }
00124 y += 10;
00125 }
00126 } break;
00127
00128 case WE_CLICK: {
00129 if (e->we.click.widget != 0) break;
00130 int item = GetDropDownItem(w);
00131 if (item >= 0) {
00132 WP(w, dropdown_d).click_delay = 4;
00133 WP(w, dropdown_d).selected_index = item;
00134 SetWindowDirty(w);
00135 }
00136 } break;
00137
00138 case WE_TICK:
00139 if (WP(w, dropdown_d).scrolling == -1) {
00140 w->vscroll.pos = max(0, w->vscroll.pos - 1);
00141 SetWindowDirty(w);
00142 } else if (WP(w, dropdown_d).scrolling == 1) {
00143 w->vscroll.pos = min(w->vscroll.count - w->vscroll.cap, w->vscroll.pos + 1);
00144 SetWindowDirty(w);
00145 }
00146 WP(w, dropdown_d).scrolling = 0;
00147 break;
00148
00149 case WE_MOUSELOOP: {
00150 Window *w2 = FindWindowById(WP(w, dropdown_d).parent_wnd_class, WP(w,dropdown_d).parent_wnd_num);
00151 if (w2 == NULL) {
00152 DeleteWindow(w);
00153 return;
00154 }
00155
00156 if (WP(w, dropdown_d).click_delay != 0 && --WP(w,dropdown_d).click_delay == 0) {
00157 WindowEvent e;
00158 e.event = WE_DROPDOWN_SELECT;
00159 e.we.dropdown.button = WP(w, dropdown_d).parent_button;
00160 e.we.dropdown.index = WP(w, dropdown_d).selected_index;
00161 w2->wndproc(w2, &e);
00162 DeleteWindow(w);
00163 return;
00164 }
00165
00166 if (WP(w, dropdown_d).drag_mode) {
00167 int item = GetDropDownItem(w);
00168
00169 if (!_left_button_clicked) {
00170 WP(w, dropdown_d).drag_mode = false;
00171 if (item < 0) return;
00172 WP(w, dropdown_d).click_delay = 2;
00173 } else {
00174 if (_cursor.pos.y <= w->top + 2) {
00175
00176 WP(w, dropdown_d).scrolling = -1;
00177 return;
00178 } else if (_cursor.pos.y >= w->top + w->height - 2) {
00179
00180 WP(w, dropdown_d).scrolling = 1;
00181 return;
00182 }
00183
00184 if (item < 0) return;
00185 }
00186
00187 WP(w, dropdown_d).selected_index = item;
00188 SetWindowDirty(w);
00189 }
00190 } break;
00191
00192 case WE_DESTROY: {
00193 Window *w2 = FindWindowById(WP(w, dropdown_d).parent_wnd_class, WP(w,dropdown_d).parent_wnd_num);
00194 if (w2 != NULL) {
00195 w2->RaiseWidget(WP(w, dropdown_d).parent_button);
00196 w2->InvalidateWidget(WP(w, dropdown_d).parent_button);
00197 }
00198
00199 DeleteDropDownList(WP(w, dropdown_d).list);
00200 } break;
00201 }
00202 }
00203
00204 void ShowDropDownList(Window *w, DropDownList *list, int selected, int button)
00205 {
00206 bool is_dropdown_menu_shown = w->IsWidgetLowered(button);
00207
00208 DeleteWindowById(WC_DROPDOWN_MENU, 0);
00209
00210 if (is_dropdown_menu_shown) {
00211 DeleteDropDownList(list);
00212 return;
00213 }
00214
00215 w->LowerWidget(button);
00216 w->InvalidateWidget(button);
00217
00218
00219
00220 const Widget *wi = &w->widget[button];
00221
00222
00223 int top = w->top + wi->bottom + 1;
00224 int height = list->size() * 10 + 4;
00225
00226
00227 Window *w3 = FindWindowById(WC_STATUS_BAR, 0);
00228 int screen_bottom = w3 == NULL ? _screen.height : w3->top;
00229
00230 bool scroll = false;
00231
00232
00233 if (top + height >= screen_bottom) {
00234 w3 = FindWindowById(WC_MAIN_TOOLBAR, 0);
00235 int screen_top = w3 == NULL ? 0 : w3->top + w3->height;
00236
00237
00238 if (w->top + wi->top - height > screen_top) {
00239 top = w->top + wi->top - height;
00240 } else {
00241
00242
00243 int rows = (screen_bottom - 4 - top) / 10;
00244 height = rows * 10 + 4;
00245 scroll = true;
00246 }
00247 }
00248
00249 Window *dw = AllocateWindow(
00250 w->left + wi->left,
00251 top,
00252 wi->right - wi->left + 1,
00253 height,
00254 DropDownMenuWndProc,
00255 WC_DROPDOWN_MENU,
00256 _dropdown_menu_widgets);
00257
00258 dw->widget[0].color = wi->color;
00259 dw->widget[0].right = wi->right - wi->left;
00260 dw->widget[0].bottom = height - 1;
00261
00262 dw->SetWidgetHiddenState(1, !scroll);
00263
00264 if (scroll) {
00265
00266
00267 dw->widget[1].color = wi->color;
00268 dw->widget[1].right = dw->widget[0].right;
00269 dw->widget[1].left = dw->widget[1].right - 11;
00270 dw->widget[1].bottom = height - 1;
00271 dw->widget[0].right -= 12;
00272
00273 dw->vscroll.cap = (height - 4) / 10;
00274 dw->vscroll.count = list->size();
00275 }
00276
00277 dw->desc_flags = WDF_DEF_WIDGET;
00278 dw->flags4 &= ~WF_WHITE_BORDER_MASK;
00279
00280 WP(dw, dropdown_d).parent_wnd_class = w->window_class;
00281 WP(dw, dropdown_d).parent_wnd_num = w->window_number;
00282 WP(dw, dropdown_d).parent_button = button;
00283 WP(dw, dropdown_d).list = list;
00284 WP(dw, dropdown_d).selected_index = selected;
00285 WP(dw, dropdown_d).click_delay = 0;
00286 WP(dw, dropdown_d).drag_mode = true;
00287 }
00288
00289 void ShowDropDownMenu(Window *w, const StringID *strings, int selected, int button, uint32 disabled_mask, uint32 hidden_mask)
00290 {
00291
00292 if (w->IsWidgetLowered(button)) {
00293 DeleteWindowById(WC_DROPDOWN_MENU, 0);
00294 return;
00295 }
00296
00297 uint result = 0;
00298 DropDownList *list = new DropDownList();
00299
00300 for (uint i = 0; strings[i] != INVALID_STRING_ID; i++) {
00301 if (!HasBit(hidden_mask, i)) {
00302 list->push_back(new DropDownListStringItem(strings[i], result, HasBit(disabled_mask, i)));
00303 }
00304 result++;
00305 }
00306
00307
00308 if (list->size() == 0) {
00309 DeleteDropDownList(list);
00310 return;
00311 }
00312
00313 ShowDropDownList(w, list, selected, button);
00314 }
00315
00316 void HideDropDownMenu(Window *pw)
00317 {
00318 Window **wz;
00319 FOR_ALL_WINDOWS(wz) {
00320 if ((*wz)->window_class != WC_DROPDOWN_MENU) continue;
00321
00322 if (pw->window_class == WP(*wz, dropdown_d).parent_wnd_class &&
00323 pw->window_number == WP(*wz, dropdown_d).parent_wnd_num) {
00324 DeleteWindow(*wz);
00325 break;
00326 }
00327 }
00328 }
00329