(svn r18293) -Codechange: add a window to set the date. Based on work by PhilSophus and Maedhros.

4 files changed, 267 insertions, 0 deletions

diff --git a/src/date_gui.cpp b/src/date_gui.cpp
new file mode 100644
index 000000000..dc6d9b8cb
--- /dev/null
+++ b/src/date_gui.cpp
@@ -0,0 +1,232 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * 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.
+ * 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.
+ * 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/>.
+ */
+
+/** @file date_gui.cpp Graphical selection of a date. */
+
+#include "stdafx.h"
+#include "core/math_func.hpp"
+#include "strings_func.h"
+#include "date_func.h"
+#include "gfx_func.h"
+#include "window_func.h"
+#include "window_gui.h"
+#include "date_gui.h"
+
+#include "widgets/dropdown_type.h"
+#include "widgets/dropdown_func.h"
+
+#include "table/strings.h"
+
+/** Widgets used by the date window */
+enum SetDateWidgets {
+	SDW_DAY,      ///< Dropdown for the day
+	SDW_MONTH,    ///< Dropdown for the month
+	SDW_YEAR,     ///< Dropdown for the year
+	SDW_SET_DATE, ///< Actually set the date
+};
+
+/** Window to select a date graphically by using dropdowns */
+struct SetDateWindow : Window {
+	SetDateCallback *callback; ///< Callback to call when a date has been selected
+	YearMonthDay date; ///< The currently selected date
+	Year min_year;     ///< The minimum year in the year dropdown
+	Year max_year;     ///< The maximum year (inclusive) in the year dropdown
+
+	/**
+	 * Create the new 'set date' window
+	 * @param desc the window description
+	 * @param window_number number of the window
+	 * @param parent the parent window, i.e. if this closes we should close too
+	 * @param initial_date the initial date to show
+	 * @param min_year the minimum year to show in the year dropdown
+	 * @param max_year the maximum year (inclusive) to show in the year dropdown
+	 * @param callback the callback to call once a date has been selected
+	 */
+	SetDateWindow(const WindowDesc *desc, WindowNumber window_number, Window *parent, Date initial_date, Year min_year, Year max_year, SetDateCallback *callback) :
+			Window(),
+			callback(callback),
+			min_year(max(MIN_YEAR, min_year)),
+			max_year(min(MAX_YEAR, max_year))
+	{
+		assert(this->min_year <= this->max_year);
+		this->parent = parent;
+		this->InitNested(desc, window_number);
+
+		if (initial_date == 0) initial_date = _date;
+		ConvertDateToYMD(initial_date, &this->date);
+		this->date.year = Clamp(this->date.year, min_year, max_year);
+	}
+
+	virtual Point OnInitialPosition(const WindowDesc *desc, int16 sm_width, int16 sm_height, int window_number)
+	{
+		Point pt = { this->parent->left + this->parent->width / 2 - sm_width / 2, this->parent->top + this->parent->height / 2 - sm_height / 2 };
+		return pt;
+	}
+
+	/**
+	 * Helper function to construct the dropdown.
+	 * @param widget the dropdown widget to create the dropdown for
+	 */
+	void ShowDateDropDown(int widget)
+	{
+		int selected;
+		DropDownList *list = new DropDownList();
+
+		switch (widget) {
+			default: NOT_REACHED();
+
+			case SDW_DAY:
+				for (uint i = 0; i < 31; i++) {
+					list->push_back(new DropDownListStringItem(STR_ORDINAL_NUMBER_1ST + i, i + 1, false));
+				}
+				selected = this->date.day;
+				break;
+
+			case SDW_MONTH:
+				for (uint i = 0; i < 12; i++) {
+					list->push_back(new DropDownListStringItem(STR_MONTH_JAN + i, i, false));
+				}
+				selected = this->date.month;
+				break;
+
+			case SDW_YEAR:
+				for (Year i = this->min_year; i <= this->max_year; i++) {
+					DropDownListParamStringItem *item = new DropDownListParamStringItem(STR_JUST_INT, i, false);
+					item->SetParam(0, i);
+					list->push_back(item);
+				}
+				selected = this->date.year;
+				break;
+		}
+
+		ShowDropDownList(this, list, selected, widget);
+	}
+
+	virtual void UpdateWidgetSize(int widget, Dimension *size, const Dimension &padding, Dimension *fill, Dimension *resize)
+	{
+		Dimension d = {0, 0};
+		switch (widget) {
+			default: return;
+
+			case SDW_DAY:
+				for (uint i = 0; i < 31; i++) {
+					d = maxdim(d, GetStringBoundingBox(STR_ORDINAL_NUMBER_1ST + i));
+				}
+				break;
+
+			case SDW_MONTH:
+				for (uint i = 0; i < 12; i++) {
+					d = maxdim(d, GetStringBoundingBox(STR_MONTH_JAN + i));
+				}
+				break;
+
+			case SDW_YEAR:
+				for (Year i = this->min_year; i <= this->max_year; i++) {
+					SetDParam(0, i);
+					d = maxdim(d, GetStringBoundingBox(STR_JUST_INT));
+				}
+				break;
+		}
+
+		d.width += padding.width;
+		d.height += padding.height;
+		*size = d;
+	}
+
+	virtual void SetStringParameters(int widget) const
+	{
+		switch (widget) {
+			case SDW_DAY:   SetDParam(0, this->date.day - 1 + STR_ORDINAL_NUMBER_1ST); break;
+			case SDW_MONTH: SetDParam(0, this->date.month + STR_MONTH_JAN); break;
+			case SDW_YEAR:  SetDParam(0, this->date.year); break;
+		}
+	}
+
+	virtual void OnPaint()
+	{
+		this->DrawWidgets();
+	}
+
+	virtual void OnClick(Point pt, int widget)
+	{
+		switch (widget) {
+			case SDW_DAY:
+			case SDW_MONTH:
+			case SDW_YEAR:
+				ShowDateDropDown(widget);
+				break;
+
+			case SDW_SET_DATE:
+				if (this->callback != NULL) this->callback(this->parent, ConvertYMDToDate(this->date.year, this->date.month, this->date.day));
+				delete this;
+				break;
+		}
+	}
+
+	virtual void OnDropdownSelect(int widget, int index)
+	{
+		switch (widget) {
+			case SDW_DAY:
+				this->date.day = index;
+				break;
+
+			case SDW_MONTH:
+				this->date.month = index;
+				break;
+
+			case SDW_YEAR:
+				this->date.year = index;
+				break;
+		}
+		this->SetDirty();
+	}
+};
+
+static const NWidgetPart _nested_set_date_widgets[] = {
+	NWidget(NWID_HORIZONTAL),
+		NWidget(WWT_CLOSEBOX, COLOUR_BROWN),
+		NWidget(WWT_CAPTION, COLOUR_BROWN), SetDataTip(STR_DATE_CAPTION, STR_TOOLTIP_WINDOW_TITLE_DRAG_THIS),
+	EndContainer(),
+	NWidget(WWT_PANEL, COLOUR_BROWN),
+		NWidget(NWID_VERTICAL), SetPIP(6, 6, 6),
+			NWidget(NWID_HORIZONTAL, NC_EQUALSIZE), SetPIP(6, 6, 6),
+				NWidget(WWT_DROPDOWN, COLOUR_ORANGE, SDW_DAY), SetFill(1, 0), SetDataTip(STR_JUST_STRING, STR_DATE_DAY_TOOLTIP),
+				NWidget(WWT_DROPDOWN, COLOUR_ORANGE, SDW_MONTH), SetFill(1, 0), SetDataTip(STR_JUST_STRING, STR_DATE_MONTH_TOOLTIP),
+				NWidget(WWT_DROPDOWN, COLOUR_ORANGE, SDW_YEAR), SetFill(1, 0), SetDataTip(STR_JUST_INT, STR_DATE_YEAR_TOOLTIP),
+			EndContainer(),
+			NWidget(NWID_HORIZONTAL),
+				NWidget(NWID_SPACER), SetFill(1, 0),
+				NWidget(WWT_PUSHTXTBTN, COLOUR_BROWN, SDW_SET_DATE), SetMinimalSize(100, 12), SetDataTip(STR_DATE_SET_DATE, STR_DATE_SET_DATE_TOOLTIP),
+				NWidget(NWID_SPACER), SetFill(1, 0),
+			EndContainer(),
+		EndContainer(),
+	EndContainer()
+};
+
+static const WindowDesc _set_date_desc(
+	WDP_CENTER, WDP_CENTER, 0, 0,
+	WC_SET_DATE, WC_NONE,
+	WDF_UNCLICK_BUTTONS,
+	_nested_set_date_widgets, lengthof(_nested_set_date_widgets)
+);
+
+/**
+ * Create the new 'set date' window
+ * @param window_number number for the window
+ * @param parent the parent window, i.e. if this closes we should close too
+ * @param initial_date the initial date to show
+ * @param min_year the minimum year to show in the year dropdown
+ * @param max_year the maximum year (inclusive) to show in the year dropdown
+ * @param callback the callback to call once a date has been selected
+ */
+void ShowSetDateWindow(Window *parent, int window_number, Date initial_date, Year min_year, Year max_year, SetDateCallback *callback)
+{
+	DeleteWindowByClass(WC_SET_DATE);
+	new SetDateWindow(&_set_date_desc, window_number, parent, initial_date, min_year, max_year, callback);
+}
diff --git a/src/date_gui.h b/src/date_gui.h
new file mode 100644
index 000000000..f15f6b34a
--- /dev/null
+++ b/src/date_gui.h
@@ -0,0 +1,24 @@
+/* $Id$ */
+
+/*
+ * This file is part of OpenTTD.
+ * 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.
+ * 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.
+ * 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/>.
+ */
+
+/** @file date_gui.h Functions related to the graphical selection of a date. */
+
+#ifndef DATE_GUI_H
+#define DATE_GUI_H
+
+/**
+ * Callback for when a date has been chosen
+ * @param w the window that sends the callback
+ * @param date the date that has been chosen
+ */
+typedef void SetDateCallback(const Window *w, Date date);
+
+void ShowSetDateWindow(Window *parent, int window_number, Date initial_date, Year min_year, Year max_year, SetDateCallback *callback);
+
+#endif /* DATE_GUI_H */
diff --git a/src/lang/english.txt b/src/lang/english.txt
index 4ed70cedd..ba41cb18a 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -3168,6 +3168,16 @@ STR_TIMETABLE_DEPARTURE_EARLY                                   :D:{SETX 30}{GRE
 STR_TIMETABLE_DEPARTURE_LATE                                    :D:{SETX 30}{RED}{STRING1}
 #####
 
+
+# Date window (for timetable)
+STR_DATE_CAPTION                                                :{WHITE}Set date
+STR_DATE_SET_DATE                                               :{BLACK}Set date
+STR_DATE_SET_DATE_TOOLTIP                                       :{BLACK}Use the selected date as starting date for the timetable
+STR_DATE_DAY_TOOLTIP                                            :{BLACK}Select day
+STR_DATE_MONTH_TOOLTIP                                          :{BLACK}Select month
+STR_DATE_YEAR_TOOLTIP                                           :{BLACK}Select year
+
+
 # AI debug window
 STR_AI_DEBUG                                                    :{WHITE}AI Debug
 STR_AI_DEBUG_NAME_TOOLTIP                                       :{BLACK}Name of the AI
diff --git a/src/window_type.h b/src/window_type.h
index 909b945af..466ed69dd 100644
--- a/src/window_type.h
+++ b/src/window_type.h
@@ -103,6 +103,7 @@ enum WindowClass {
 	WC_OSK,
 	WC_WAYPOINT_VIEW,
 	WC_SELECT_STATION,
+	WC_SET_DATE,
 	WC_AI_DEBUG,
 	WC_AI_LIST,
 	WC_AI_SETTINGS,