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9724
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/* $Id$ */
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#include "../stdafx.h"
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#include "../openttd.h"
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#include "../strings_type.h"
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#include "../window_gui.h"
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#include "../strings_func.h"
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#include "../strings_type.h"
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#include "../gfx_func.h"
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#include "../window_func.h"
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#include "../core/math_func.hpp"
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#include "dropdown_type.h"
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#include "dropdown_func.h"
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#include "../table/sprites.h"
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#include "table/strings.h"
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StringID DropDownListItem::String() const
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{
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return STR_NULL;
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}
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StringID DropDownListStringItem::String() const
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{
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return this->string;
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}
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StringID DropDownListParamStringItem::String() const
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{
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for (uint i = 0; i < lengthof(this->decode_params); i++) SetDParam(i, this->decode_params[i]);
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return this->string;
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}
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/**
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* Delete all items of a drop down list and the list itself
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* @param list List to delete.
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*/
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static void DeleteDropDownList(DropDownList *list)
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{
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for (DropDownList::iterator it = list->begin(); it != list->end(); ++it) {
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DropDownListItem *item = *it;
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delete item;
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}
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delete list;
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}
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struct dropdown_d {
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WindowClass parent_wnd_class;
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WindowNumber parent_wnd_num;
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byte parent_button;
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DropDownList *list;
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byte selected_index;
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byte click_delay;
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bool drag_mode;
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int scrolling;
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};
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assert_compile(WINDOW_CUSTOM_SIZE >= sizeof(dropdown_d));
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static const Widget _dropdown_menu_widgets[] = {
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{ WWT_PANEL, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_NULL},
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{ WWT_SCROLLBAR, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_0190_SCROLL_BAR_SCROLLS_LIST},
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{ WIDGETS_END},
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};
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static int GetDropDownItem(const Window *w)
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{
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if (GetWidgetFromPos(w, _cursor.pos.x - w->left, _cursor.pos.y - w->top) < 0) return -1;
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int y = _cursor.pos.y - w->top - 2 + w->vscroll.pos * 10;
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if (y < 0) return -1;
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uint selected_row = y / 10;
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const DropDownList *list = WP(w, dropdown_d).list;
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if (selected_row >= list->size()) return -1;
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for (DropDownList::const_iterator it = list->begin(); it != list->end(); ++it, selected_row--) {
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if (selected_row == 0) {
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const DropDownListItem *item = *it;
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if (item->masked || item->String() == STR_NULL) return -1;
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return item->result;
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}
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}
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return -1;
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}
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static void DropDownMenuWndProc(Window *w, WindowEvent *e)
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{
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switch (e->event) {
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case WE_PAINT: {
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DrawWindowWidgets(w);
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int x = 1;
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int y = 2 - w->vscroll.pos * 10;
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int sel = WP(w, dropdown_d).selected_index;
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int width = w->widget[0].right - 3;
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int height = w->widget[0].bottom - 3;
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DropDownList *list = WP(w, dropdown_d).list;
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for (DropDownList::const_iterator it = list->begin(); it != list->end(); ++it) {
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if (y >= 0 && y <= height) {
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const DropDownListItem *item = *it;
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if (item->String() != STR_NULL) {
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if (sel == item->result) GfxFillRect(x + 1, y, x + width, y + 9, 0);
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DrawStringTruncated(x + 2, y, item->String(), sel == item->result ? TC_WHITE : TC_BLACK, x + width);
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if (item->masked) {
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GfxFillRect(x, y, x + width, y + 9,
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(1 << PALETTE_MODIFIER_GREYOUT) | _colour_gradient[w->widget[0].color][5]
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);
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}
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} else {
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int c1 = _colour_gradient[w->widget[0].color][3];
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int c2 = _colour_gradient[w->widget[0].color][7];
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GfxFillRect(x + 1, y + 3, x + w->width - 5, y + 3, c1);
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GfxFillRect(x + 1, y + 4, x + w->width - 5, y + 4, c2);
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}
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}
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y += 10;
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}
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} break;
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case WE_CLICK: {
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if (e->we.click.widget != 0) break;
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int item = GetDropDownItem(w);
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if (item >= 0) {
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WP(w, dropdown_d).click_delay = 4;
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WP(w, dropdown_d).selected_index = item;
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SetWindowDirty(w);
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}
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} break;
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case WE_TICK:
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if (WP(w, dropdown_d).scrolling == -1) {
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w->vscroll.pos = max(0, w->vscroll.pos - 1);
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SetWindowDirty(w);
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} else if (WP(w, dropdown_d).scrolling == 1) {
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w->vscroll.pos = min(w->vscroll.count - w->vscroll.cap, w->vscroll.pos + 1);
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SetWindowDirty(w);
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}
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WP(w, dropdown_d).scrolling = 0;
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break;
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case WE_MOUSELOOP: {
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Window *w2 = FindWindowById(WP(w, dropdown_d).parent_wnd_class, WP(w,dropdown_d).parent_wnd_num);
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if (w2 == NULL) {
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DeleteWindow(w);
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return;
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}
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if (WP(w, dropdown_d).click_delay != 0 && --WP(w,dropdown_d).click_delay == 0) {
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WindowEvent e;
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e.event = WE_DROPDOWN_SELECT;
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e.we.dropdown.button = WP(w, dropdown_d).parent_button;
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e.we.dropdown.index = WP(w, dropdown_d).selected_index;
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w2->wndproc(w2, &e);
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DeleteWindow(w);
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return;
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}
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if (WP(w, dropdown_d).drag_mode) {
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int item = GetDropDownItem(w);
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if (!_left_button_clicked) {
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WP(w, dropdown_d).drag_mode = false;
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if (item < 0) return;
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WP(w, dropdown_d).click_delay = 2;
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} else {
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if (_cursor.pos.y <= w->top + 2) {
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/* Cursor is above the list, set scroll up */
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WP(w, dropdown_d).scrolling = -1;
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return;
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} else if (_cursor.pos.y >= w->top + w->height - 2) {
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/* Cursor is below list, set scroll down */
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WP(w, dropdown_d).scrolling = 1;
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return;
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}
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if (item < 0) return;
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}
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WP(w, dropdown_d).selected_index = item;
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SetWindowDirty(w);
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}
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} break;
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case WE_DESTROY: {
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Window *w2 = FindWindowById(WP(w, dropdown_d).parent_wnd_class, WP(w,dropdown_d).parent_wnd_num);
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if (w2 != NULL) {
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w2->RaiseWidget(WP(w, dropdown_d).parent_button);
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w2->InvalidateWidget(WP(w, dropdown_d).parent_button);
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}
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DeleteDropDownList(WP(w, dropdown_d).list);
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} break;
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}
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}
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void ShowDropDownList(Window *w, DropDownList *list, int selected, int button)
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{
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bool is_dropdown_menu_shown = w->IsWidgetLowered(button);
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DeleteWindowById(WC_DROPDOWN_MENU, 0);
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if (is_dropdown_menu_shown) {
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DeleteDropDownList(list);
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return;
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}
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w->LowerWidget(button);
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w->InvalidateWidget(button);
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/* Our parent's button widget is used to determine where to place the drop
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* down list window. */
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const Widget *wi = &w->widget[button];
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/* The preferred position is just below the dropdown calling widget */
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int top = w->top + wi->bottom + 1;
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int height = list->size() * 10 + 4;
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/* Check if the status bar is visible, as we don't want to draw over it */
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Window *w3 = FindWindowById(WC_STATUS_BAR, 0);
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int screen_bottom = w3 == NULL ? _screen.height : w3->top;
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bool scroll = false;
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/* Check if the dropdown will fully fit below the widget */
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if (top + height >= screen_bottom) {
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w3 = FindWindowById(WC_MAIN_TOOLBAR, 0);
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int screen_top = w3 == NULL ? 0 : w3->top + w3->height;
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/* If not, check if it will fit above the widget */
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if (w->top + wi->top - height > screen_top) {
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top = w->top + wi->top - height;
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} else {
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/* ... and lastly if it won't, enable the scroll bar and fit the
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* list in below the widget */
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int rows = (screen_bottom - 4 - top) / 10;
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height = rows * 10 + 4;
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scroll = true;
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}
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}
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Window *dw = AllocateWindow(
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w->left + wi->left,
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top,
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wi->right - wi->left + 1,
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height,
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DropDownMenuWndProc,
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WC_DROPDOWN_MENU,
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_dropdown_menu_widgets);
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dw->widget[0].color = wi->color;
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dw->widget[0].right = wi->right - wi->left;
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dw->widget[0].bottom = height - 1;
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dw->SetWidgetHiddenState(1, !scroll);
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if (scroll) {
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/* We're scrolling, so enable the scroll bar and shrink the list by
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* the scrollbar's width */
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dw->widget[1].color = wi->color;
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dw->widget[1].right = dw->widget[0].right;
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dw->widget[1].left = dw->widget[1].right - 11;
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dw->widget[1].bottom = height - 1;
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dw->widget[0].right -= 12;
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dw->vscroll.cap = (height - 4) / 10;
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dw->vscroll.count = list->size();
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}
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dw->desc_flags = WDF_DEF_WIDGET;
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dw->flags4 &= ~WF_WHITE_BORDER_MASK;
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WP(dw, dropdown_d).parent_wnd_class = w->window_class;
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WP(dw, dropdown_d).parent_wnd_num = w->window_number;
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WP(dw, dropdown_d).parent_button = button;
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WP(dw, dropdown_d).list = list;
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WP(dw, dropdown_d).selected_index = selected;
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WP(dw, dropdown_d).click_delay = 0;
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WP(dw, dropdown_d).drag_mode = true;
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}
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void ShowDropDownMenu(Window *w, const StringID *strings, int selected, int button, uint32 disabled_mask, uint32 hidden_mask)
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{
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/* Don't create a new list if we're just closing an existing menu */
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if (w->IsWidgetLowered(button)) {
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DeleteWindowById(WC_DROPDOWN_MENU, 0);
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return;
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}
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uint result = 0;
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DropDownList *list = new DropDownList();
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for (uint i = 0; strings[i] != INVALID_STRING_ID; i++) {
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if (!HasBit(hidden_mask, i)) {
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list->push_back(new DropDownListStringItem(strings[i], result, HasBit(disabled_mask, i)));
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}
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result++;
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}
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/* No entries in the list? */
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if (list->size() == 0) {
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DeleteDropDownList(list);
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return;
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}
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ShowDropDownList(w, list, selected, button);
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}
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void HideDropDownMenu(Window *pw)
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{
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Window **wz;
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FOR_ALL_WINDOWS(wz) {
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if ((*wz)->window_class != WC_DROPDOWN_MENU) continue;
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if (pw->window_class == WP(*wz, dropdown_d).parent_wnd_class &&
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pw->window_number == WP(*wz, dropdown_d).parent_wnd_num) {
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DeleteWindow(*wz);
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break;
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}
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}
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}
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