src/date_gui.cpp

   1 /* $Id$ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   6  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file date_gui.cpp Graphical selection of a date. */
  11
  12 #include "stdafx.h"
  13 #include "strings_func.h"
  14 #include "date_func.h"
  15 #include "window_func.h"
  16 #include "window_gui.h"
  17 #include "date_gui.h"
  18 #include "core/geometry_func.hpp"
  19
  20 #include "widgets/dropdown_type.h"
  21 #include "widgets/date_widget.h"
  22
  23 #include "safeguards.h"
  24
  25
  26 /** Window to select a date graphically by using dropdowns */
  27 struct SetDateWindow : Window {
  28         SetDateCallback *callback; ///< Callback to call when a date has been selected
  29         YearMonthDay date; ///< The currently selected date
  30         Year min_year;     ///< The minimum year in the year dropdown
  31         Year max_year;     ///< The maximum year (inclusive) in the year dropdown
  32
  33         /**
  34          * Create the new 'set date' window
  35          * @param desc the window description
  36          * @param window_number number of the window
  37          * @param parent the parent window, i.e. if this closes we should close too
  38          * @param initial_date the initial date to show
  39          * @param min_year the minimum year to show in the year dropdown
  40          * @param max_year the maximum year (inclusive) to show in the year dropdown
  41          * @param callback the callback to call once a date has been selected
  42          */
  43         SetDateWindow(WindowDesc *desc, WindowNumber window_number, Window *parent, Date initial_date, Year min_year, Year max_year, SetDateCallback *callback) :
  44                         Window(desc),
  45                         callback(callback),
  46                         min_year(max(MIN_YEAR, min_year)),
  47                         max_year(min(MAX_YEAR, max_year))
  48         {
  49                 assert(this->min_year <= this->max_year);
  50                 this->parent = parent;
  51                 this->InitNested(window_number);
  52
  53                 if (initial_date == 0) initial_date = _date;
  54                 ConvertDateToYMD(initial_date, &this->date);
  55                 this->date.year = Clamp(this->date.year, min_year, max_year);
  56         }
  57
  58         virtual Point OnInitialPosition(int16 sm_width, int16 sm_height, int window_number)
  59         {
  60                 Point pt = { this->parent->left + this->parent->width / 2 - sm_width / 2, this->parent->top + this->parent->height / 2 - sm_height / 2 };
  61                 return pt;
  62         }
  63
  64         /**
  65          * Helper function to construct the dropdown.
  66          * @param widget the dropdown widget to create the dropdown for
  67          */
  68         void ShowDateDropDown(int widget)
  69         {
  70                 int selected;
  71                 DropDownList *list = new DropDownList();
  72
  73                 switch (widget) {
  74                         default: NOT_REACHED();
  75
  76                         case WID_SD_DAY:
  77                                 for (uint i = 0; i < 31; i++) {
  78                                         *list->Append() = new DropDownListStringItem(STR_DAY_NUMBER_1ST + i, i + 1, false);
  79                                 }
  80                                 selected = this->date.day;
  81                                 break;
  82
  83                         case WID_SD_MONTH:
  84                                 for (uint i = 0; i < 12; i++) {
  85                                         *list->Append() = new DropDownListStringItem(STR_MONTH_JAN + i, i, false);
  86                                 }
  87                                 selected = this->date.month;
  88                                 break;
  89
  90                         case WID_SD_YEAR:
  91                                 for (Year i = this->min_year; i <= this->max_year; i++) {
  92                                         DropDownListParamStringItem *item = new DropDownListParamStringItem(STR_JUST_INT, i, false);
  93                                         item->SetParam(0, i);
  94                                         *list->Append() = item;
  95                                 }
  96                                 selected = this->date.year;
  97                                 break;
  98                 }
  99
 100                 ShowDropDownList(this, list, selected, widget);
 101         }
 102
 103         virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
 104         {
 105                 Dimension d = {0, 0};
 106                 switch (widget) {
 107                         default: return;
 108
 109                         case WID_SD_DAY:
 110                                 for (uint i = 0; i < 31; i++) {
 111                                         d = maxdim(d, GetStringBoundingBox(STR_DAY_NUMBER_1ST + i));
 112                                 }
 113                                 break;
 114
 115                         case WID_SD_MONTH:
 116                                 for (uint i = 0; i < 12; i++) {
 117                                         d = maxdim(d, GetStringBoundingBox(STR_MONTH_JAN + i));
 118                                 }
 119                                 break;
 120
 121                         case WID_SD_YEAR:
 122                                 SetDParamMaxValue(0, this->max_year);
 123                                 d = maxdim(d, GetStringBoundingBox(STR_JUST_INT));
 124                                 break;
 125                 }
 126
 127                 d.width += padding.width;
 128                 d.height += padding.height;
 129                 *size = d;
 130         }
 131
 132         virtual void SetStringParameters(int widget) const
 133         {
 134                 switch (widget) {
 135                         case WID_SD_DAY:   SetDParam(0, this->date.day - 1 + STR_DAY_NUMBER_1ST); break;
 136                         case WID_SD_MONTH: SetDParam(0, this->date.month + STR_MONTH_JAN); break;
 137                         case WID_SD_YEAR:  SetDParam(0, this->date.year); break;
 138                 }
 139         }
 140
 141         virtual void OnClick(Point pt, int widget, int click_count)
 142         {
 143                 switch (widget) {
 144                         case WID_SD_DAY:
 145                         case WID_SD_MONTH:
 146                         case WID_SD_YEAR:
 147                                 ShowDateDropDown(widget);
 148                                 break;
 149
 150                         case WID_SD_SET_DATE:
 151                                 if (this->callback != NULL) this->callback(this, ConvertYMDToDate(this->date.year, this->date.month, this->date.day));
 152                                 delete this;
 153                                 break;
 154                 }
 155         }
 156
 157         virtual void OnDropdownSelect(int widget, int index)
 158         {
 159                 switch (widget) {
 160                         case WID_SD_DAY:
 161                                 this->date.day = index;
 162                                 break;
 163
 164                         case WID_SD_MONTH:
 165                                 this->date.month = index;
 166                                 break;
 167
 168                         case WID_SD_YEAR:
 169                                 this->date.year = index;
 170                                 break;
 171                 }
 172                 this->SetDirty();
 173         }
 174 };
 175
 176 /** Widgets for the date setting window. */
 177 static const NWidgetPart _nested_set_date_widgets[] = {
 178         NWidget(NWID_HORIZONTAL),
 179                 NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
 180                 NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_DATE_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
 181         EndContainer(),
 182         NWidget(WWT_PANEL, COLOUR_BROWN),
 183                 NWidget(NWID_VERTICAL), SetPIP(6, 6, 6),
 184                         NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(6, 6, 6),
 185                                 NWidget(WWT_DROPDOWN, COLOUR_ORANGE, WID_SD_DAY), SetFill(1, 0), SetDataTip(STR_JUST_STRING, STR_DATE_DAY_TOOLTIP),
 186                                 NWidget(WWT_DROPDOWN, COLOUR_ORANGE, WID_SD_MONTH), SetFill(1, 0), SetDataTip(STR_JUST_STRING, STR_DATE_MONTH_TOOLTIP),
 187                                 NWidget(WWT_DROPDOWN, COLOUR_ORANGE, WID_SD_YEAR), SetFill(1, 0), SetDataTip(STR_JUST_INT, STR_DATE_YEAR_TOOLTIP),
 188                         EndContainer(),
 189                         NWidget(NWID_HORIZONTAL),
 190                                 NWidget(NWID_SPACER), SetFill(1, 0),
 191                                 NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, WID_SD_SET_DATE), SetMinimalSize(100, 12), SetDataTip(STR_DATE_SET_DATE, STR_DATE_SET_DATE_TOOLTIP),
 192                                 NWidget(NWID_SPACER), SetFill(1, 0),
 193                         EndContainer(),
 194                 EndContainer(),
 195         EndContainer()
 196 };
 197
 198 /** Description of the date setting window. */
 199 static WindowDesc _set_date_desc(
 200         WDP_CENTER, NULL, 0, 0,
 201         WC_SET_DATE, WC_NONE,
 202         0,
 203         _nested_set_date_widgets, lengthof(_nested_set_date_widgets)
 204 );
 205
 206 /**
 207  * Create the new 'set date' window
 208  * @param window_number number for the window
 209  * @param parent the parent window, i.e. if this closes we should close too
 210  * @param initial_date the initial date to show
 211  * @param min_year the minimum year to show in the year dropdown
 212  * @param max_year the maximum year (inclusive) to show in the year dropdown
 213  * @param callback the callback to call once a date has been selected
 214  */
 215 void ShowSetDateWindow(Window *parent, int window_number, Date initial_date, Year min_year, Year max_year, SetDateCallback *callback)
 216 {
 217         DeleteWindowByClass(WC_SET_DATE);
 218         new SetDateWindow(&_set_date_desc, window_number, parent, initial_date, min_year, max_year, callback);
 219 }