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00012 #include "../stdafx.h"
00013 #include "../window_gui.h"
00014 #include "../string_func.h"
00015 #include "../strings_func.h"
00016 #include "../window_func.h"
00017 #include "dropdown_type.h"
00018
00019 #include "dropdown_widget.h"
00020
00021
00022 void DropDownListItem::Draw(int left, int right, int top, int bottom, bool sel, int bg_colour) const
00023 {
00024 int c1 = _colour_gradient[bg_colour][3];
00025 int c2 = _colour_gradient[bg_colour][7];
00026
00027 int mid = top + this->Height(0) / 2;
00028 GfxFillRect(left + 1, mid - 2, right - 1, mid - 2, c1);
00029 GfxFillRect(left + 1, mid - 1, right - 1, mid - 1, c2);
00030 }
00031
00032 uint DropDownListStringItem::Width() const
00033 {
00034 char buffer[512];
00035 GetString(buffer, this->String(), lastof(buffer));
00036 return GetStringBoundingBox(buffer).width;
00037 }
00038
00039 void DropDownListStringItem::Draw(int left, int right, int top, int bottom, bool sel, int bg_colour) const
00040 {
00041 DrawString(left + WD_FRAMERECT_LEFT, right - WD_FRAMERECT_RIGHT, top, this->String(), sel ? TC_WHITE : TC_BLACK);
00042 }
00043
00051 int DropDownListStringItem::NatSortFunc(const DropDownListItem * const *first, const DropDownListItem * const * second)
00052 {
00053 char buffer1[512], buffer2[512];
00054 GetString(buffer1, static_cast<const DropDownListStringItem*>(*first)->String(), lastof(buffer1));
00055 GetString(buffer2, static_cast<const DropDownListStringItem*>(*second)->String(), lastof(buffer2));
00056 return strnatcmp(buffer1, buffer2);
00057 }
00058
00059 StringID DropDownListParamStringItem::String() const
00060 {
00061 for (uint i = 0; i < lengthof(this->decode_params); i++) SetDParam(i, this->decode_params[i]);
00062 return this->string;
00063 }
00064
00065 StringID DropDownListCharStringItem::String() const
00066 {
00067 SetDParamStr(0, this->raw_string);
00068 return this->string;
00069 }
00070
00071 static const NWidgetPart _nested_dropdown_menu_widgets[] = {
00072 NWidget(NWID_HORIZONTAL),
00073 NWidget(WWT_PANEL, COLOUR_END, WID_DM_ITEMS), SetMinimalSize(1, 1), SetScrollbar(WID_DM_SCROLL), EndContainer(),
00074 NWidget(NWID_SELECTION, INVALID_COLOUR, WID_DM_SHOW_SCROLL),
00075 NWidget(NWID_VSCROLLBAR, COLOUR_END, WID_DM_SCROLL),
00076 EndContainer(),
00077 EndContainer(),
00078 };
00079
00080 static WindowDesc _dropdown_desc(
00081 WDP_MANUAL, NULL, 0, 0,
00082 WC_DROPDOWN_MENU, WC_NONE,
00083 0,
00084 _nested_dropdown_menu_widgets, lengthof(_nested_dropdown_menu_widgets)
00085 );
00086
00088 struct DropdownWindow : Window {
00089 WindowClass parent_wnd_class;
00090 WindowNumber parent_wnd_num;
00091 int parent_button;
00092 const DropDownList *list;
00093 int selected_index;
00094 byte click_delay;
00095 bool drag_mode;
00096 bool instant_close;
00097 int scrolling;
00098 Point position;
00099 Scrollbar *vscroll;
00100
00114 DropdownWindow(Window *parent, const DropDownList *list, int selected, int button, bool instant_close, const Point &position, const Dimension &size, Colours wi_colour, bool scroll)
00115 : Window(&_dropdown_desc)
00116 {
00117 assert(list->Length() > 0);
00118
00119 this->position = position;
00120
00121 this->CreateNestedTree();
00122
00123 this->vscroll = this->GetScrollbar(WID_DM_SCROLL);
00124
00125 uint items_width = size.width - (scroll ? NWidgetScrollbar::GetVerticalDimension().width : 0);
00126 NWidgetCore *nwi = this->GetWidget<NWidgetCore>(WID_DM_ITEMS);
00127 nwi->SetMinimalSize(items_width, size.height + 4);
00128 nwi->colour = wi_colour;
00129
00130 nwi = this->GetWidget<NWidgetCore>(WID_DM_SCROLL);
00131 nwi->colour = wi_colour;
00132
00133 this->GetWidget<NWidgetStacked>(WID_DM_SHOW_SCROLL)->SetDisplayedPlane(scroll ? 0 : SZSP_NONE);
00134
00135 this->FinishInitNested(0);
00136 CLRBITS(this->flags, WF_WHITE_BORDER);
00137
00138
00139 int list_height = 0;
00140 for (const DropDownListItem * const *it = list->Begin(); it != list->End(); ++it) {
00141 const DropDownListItem *item = *it;
00142 list_height += item->Height(items_width);
00143 }
00144
00145
00146 this->vscroll->SetCapacity(size.height * (uint16)list->Length() / list_height);
00147 this->vscroll->SetCount((uint16)list->Length());
00148
00149 this->parent_wnd_class = parent->window_class;
00150 this->parent_wnd_num = parent->window_number;
00151 this->parent_button = button;
00152 this->list = list;
00153 this->selected_index = selected;
00154 this->click_delay = 0;
00155 this->drag_mode = true;
00156 this->instant_close = instant_close;
00157 }
00158
00159 ~DropdownWindow()
00160 {
00161
00162
00163 this->window_class = WC_INVALID;
00164 this->SetDirty();
00165
00166 Window *w2 = FindWindowById(this->parent_wnd_class, this->parent_wnd_num);
00167 if (w2 != NULL) {
00168 Point pt = _cursor.pos;
00169 pt.x -= w2->left;
00170 pt.y -= w2->top;
00171 w2->OnDropdownClose(pt, this->parent_button, this->selected_index, this->instant_close);
00172 }
00173 delete this->list;
00174 }
00175
00176 virtual Point OnInitialPosition(int16 sm_width, int16 sm_height, int window_number)
00177 {
00178 return this->position;
00179 }
00180
00186 bool GetDropDownItem(int &value)
00187 {
00188 if (GetWidgetFromPos(this, _cursor.pos.x - this->left, _cursor.pos.y - this->top) < 0) return false;
00189
00190 NWidgetBase *nwi = this->GetWidget<NWidgetBase>(WID_DM_ITEMS);
00191 int y = _cursor.pos.y - this->top - nwi->pos_y - 2;
00192 int width = nwi->current_x - 4;
00193 int pos = this->vscroll->GetPosition();
00194
00195 const DropDownList *list = this->list;
00196
00197 for (const DropDownListItem * const *it = list->Begin(); it != list->End(); ++it) {
00198
00199 if (--pos >= 0) continue;
00200
00201 const DropDownListItem *item = *it;
00202 int item_height = item->Height(width);
00203
00204 if (y < item_height) {
00205 if (item->masked || !item->Selectable()) return false;
00206 value = item->result;
00207 return true;
00208 }
00209
00210 y -= item_height;
00211 }
00212
00213 return false;
00214 }
00215
00216 virtual void DrawWidget(const Rect &r, int widget) const
00217 {
00218 if (widget != WID_DM_ITEMS) return;
00219
00220 Colours colour = this->GetWidget<NWidgetCore>(widget)->colour;
00221
00222 int y = r.top + 2;
00223 int pos = this->vscroll->GetPosition();
00224 for (const DropDownListItem * const *it = this->list->Begin(); it != this->list->End(); ++it) {
00225 const DropDownListItem *item = *it;
00226 int item_height = item->Height(r.right - r.left + 1);
00227
00228
00229 if (--pos >= 0) continue;
00230
00231 if (y + item_height < r.bottom) {
00232 bool selected = (this->selected_index == item->result);
00233 if (selected) GfxFillRect(r.left + 2, y, r.right - 1, y + item_height - 1, PC_BLACK);
00234
00235 item->Draw(r.left, r.right, y, y + item_height, selected, colour);
00236
00237 if (item->masked) {
00238 GfxFillRect(r.left + 1, y, r.right - 1, y + item_height - 1, _colour_gradient[colour][5], FILLRECT_CHECKER);
00239 }
00240 }
00241 y += item_height;
00242 }
00243 }
00244
00245 virtual void OnClick(Point pt, int widget, int click_count)
00246 {
00247 if (widget != WID_DM_ITEMS) return;
00248 int item;
00249 if (this->GetDropDownItem(item)) {
00250 this->click_delay = 4;
00251 this->selected_index = item;
00252 this->SetDirty();
00253 }
00254 }
00255
00256 virtual void OnTick()
00257 {
00258 if (this->scrolling != 0) {
00259 int pos = this->vscroll->GetPosition();
00260
00261 this->vscroll->UpdatePosition(this->scrolling);
00262 this->scrolling = 0;
00263
00264 if (pos != this->vscroll->GetPosition()) {
00265 this->SetDirty();
00266 }
00267 }
00268 }
00269
00270 virtual void OnMouseLoop()
00271 {
00272 Window *w2 = FindWindowById(this->parent_wnd_class, this->parent_wnd_num);
00273 if (w2 == NULL) {
00274 delete this;
00275 return;
00276 }
00277
00278 if (this->click_delay != 0 && --this->click_delay == 0) {
00279
00280
00281 this->window_class = WC_INVALID;
00282 this->SetDirty();
00283
00284 w2->OnDropdownSelect(this->parent_button, this->selected_index);
00285 delete this;
00286 return;
00287 }
00288
00289 if (this->drag_mode) {
00290 int item;
00291
00292 if (!_left_button_clicked) {
00293 this->drag_mode = false;
00294 if (!this->GetDropDownItem(item)) {
00295 if (this->instant_close) delete this;
00296 return;
00297 }
00298 this->click_delay = 2;
00299 } else {
00300 if (_cursor.pos.y <= this->top + 2) {
00301
00302 this->scrolling = -1;
00303 return;
00304 } else if (_cursor.pos.y >= this->top + this->height - 2) {
00305
00306 this->scrolling = 1;
00307 return;
00308 }
00309
00310 if (!this->GetDropDownItem(item)) return;
00311 }
00312
00313 if (this->selected_index != item) {
00314 this->selected_index = item;
00315 this->SetDirty();
00316 }
00317 }
00318 }
00319 };
00320
00335 void ShowDropDownListAt(Window *w, const DropDownList *list, int selected, int button, Rect wi_rect, Colours wi_colour, bool auto_width, bool instant_close)
00336 {
00337 DeleteWindowById(WC_DROPDOWN_MENU, 0);
00338
00339
00340 int top = w->top + wi_rect.bottom + 1;
00341
00342
00343 uint width = wi_rect.right - wi_rect.left + 1;
00344
00345 uint max_item_width = 0;
00346
00347 if (auto_width) {
00348
00349 for (const DropDownListItem * const *it = list->Begin(); it != list->End(); ++it) {
00350 const DropDownListItem *item = *it;
00351 max_item_width = max(max_item_width, item->Width() + 5);
00352 }
00353 }
00354
00355
00356 int list_height = 0;
00357
00358 for (const DropDownListItem * const *it = list->Begin(); it != list->End(); ++it) {
00359 const DropDownListItem *item = *it;
00360 list_height += item->Height(width);
00361 }
00362
00363
00364 int height = list_height;
00365
00366
00367 int screen_bottom = GetMainViewBottom();
00368 bool scroll = false;
00369
00370
00371 if (top + height + 4 >= screen_bottom) {
00372
00373 if (w->top + wi_rect.top - height > GetMainViewTop()) {
00374 top = w->top + wi_rect.top - height - 4;
00375 } else {
00376
00377
00378 int avg_height = list_height / (int)list->Length();
00379 int rows = (screen_bottom - 4 - top) / avg_height;
00380 height = rows * avg_height;
00381 scroll = true;
00382
00383
00384 max_item_width += NWidgetScrollbar::GetVerticalDimension().width;
00385 }
00386 }
00387
00388 if (auto_width) width = max(width, max_item_width);
00389
00390 Point dw_pos = { w->left + (_current_text_dir == TD_RTL ? wi_rect.right + 1 - width : wi_rect.left), top};
00391 Dimension dw_size = {width, height};
00392 new DropdownWindow(w, list, selected, button, instant_close, dw_pos, dw_size, wi_colour, scroll);
00393 }
00394
00408 void ShowDropDownList(Window *w, const DropDownList *list, int selected, int button, uint width, bool auto_width, bool instant_close)
00409 {
00410
00411
00412 Rect wi_rect;
00413 NWidgetCore *nwi = w->GetWidget<NWidgetCore>(button);
00414 wi_rect.left = nwi->pos_x;
00415 wi_rect.right = nwi->pos_x + nwi->current_x - 1;
00416 wi_rect.top = nwi->pos_y;
00417 wi_rect.bottom = nwi->pos_y + nwi->current_y - 1;
00418 Colours wi_colour = nwi->colour;
00419
00420 if ((nwi->type & WWT_MASK) == NWID_BUTTON_DROPDOWN) {
00421 nwi->disp_flags |= ND_DROPDOWN_ACTIVE;
00422 } else {
00423 w->LowerWidget(button);
00424 }
00425 w->SetWidgetDirty(button);
00426
00427 if (width != 0) {
00428 if (_current_text_dir == TD_RTL) {
00429 wi_rect.left = wi_rect.right + 1 - width;
00430 } else {
00431 wi_rect.right = wi_rect.left + width - 1;
00432 }
00433 }
00434
00435 ShowDropDownListAt(w, list, selected, button, wi_rect, wi_colour, auto_width, instant_close);
00436 }
00437
00449 void ShowDropDownMenu(Window *w, const StringID *strings, int selected, int button, uint32 disabled_mask, uint32 hidden_mask, uint width)
00450 {
00451 DropDownList *list = new DropDownList();
00452
00453 for (uint i = 0; strings[i] != INVALID_STRING_ID; i++) {
00454 if (!HasBit(hidden_mask, i)) {
00455 *list->Append() = new DropDownListStringItem(strings[i], i, HasBit(disabled_mask, i));
00456 }
00457 }
00458
00459
00460 if (list->Length() == 0) {
00461 delete list;
00462 return;
00463 }
00464
00465 ShowDropDownList(w, list, selected, button, width);
00466 }
00467
00473 int HideDropDownMenu(Window *pw)
00474 {
00475 Window *w;
00476 FOR_ALL_WINDOWS_FROM_BACK(w) {
00477 if (w->window_class != WC_DROPDOWN_MENU) continue;
00478
00479 DropdownWindow *dw = dynamic_cast<DropdownWindow*>(w);
00480 assert(dw != NULL);
00481 if (pw->window_class == dw->parent_wnd_class &&
00482 pw->window_number == dw->parent_wnd_num) {
00483 int parent_button = dw->parent_button;
00484 delete dw;
00485 return parent_button;
00486 }
00487 }
00488
00489 return -1;
00490 }
00491