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-rw-r--r--src/widgets/dropdown.cpp287
-rw-r--r--src/widgets/dropdown_func.h12
-rw-r--r--src/widgets/dropdown_type.h65
3 files changed, 364 insertions, 0 deletions
diff --git a/src/widgets/dropdown.cpp b/src/widgets/dropdown.cpp
new file mode 100644
index 000000000..81821b9cb
--- /dev/null
+++ b/src/widgets/dropdown.cpp
@@ -0,0 +1,287 @@
+/* $Id$ */
+
+#include "../stdafx.h"
+#include "../openttd.h"
+#include "../strings_type.h"
+#include "../window_gui.h"
+#include "../strings_func.h"
+#include "../strings_type.h"
+#include "../gfx_func.h"
+#include "../window_func.h"
+#include "dropdown_type.h"
+#include "dropdown_func.h"
+
+#include "../table/sprites.h"
+#include "table/strings.h"
+
+StringID DropDownListItem::String() const
+{
+ return STR_NULL;
+}
+
+StringID DropDownListStringItem::String() const
+{
+ return this->string;
+}
+
+StringID DropDownListParamStringItem::String() const
+{
+ for (uint i = 0; i < lengthof(this->decode_params); i++) SetDParam(i, this->decode_params[i]);
+ return this->string;
+}
+
+struct dropdown_d {
+ WindowClass parent_wnd_class;
+ WindowNumber parent_wnd_num;
+ byte parent_button;
+ DropDownList *list;
+ byte selected_index;
+ byte click_delay;
+ bool drag_mode;
+};
+assert_compile(WINDOW_CUSTOM_SIZE >= sizeof(dropdown_d));
+
+static const Widget _dropdown_menu_widgets[] = {
+{ WWT_PANEL, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_NULL},
+{ WWT_SCROLLBAR, RESIZE_NONE, 0, 0, 0, 0, 0, 0x0, STR_0190_SCROLL_BAR_SCROLLS_LIST},
+{ WIDGETS_END},
+};
+
+static int GetDropDownItem(const Window *w)
+{
+ if (GetWidgetFromPos(w, _cursor.pos.x - w->left, _cursor.pos.y - w->top) < 0) return -1;
+
+ int y = _cursor.pos.y - w->top - 2 + w->vscroll.pos * 10;
+ if (y < 0) return -1;
+
+ uint selected_row = y / 10;
+ const DropDownList *list = WP(w, dropdown_d).list;
+
+ if (selected_row >= list->size()) return -1;
+
+ for (DropDownList::const_iterator it = list->begin(); it != list->end(); ++it, selected_row--) {
+ if (selected_row == 0) {
+ const DropDownListItem *item = *it;
+ if (item->masked || item->String() == STR_NULL) return -1;
+ return item->result;
+ }
+ }
+
+ return -1;
+}
+
+static void DropDownMenuWndProc(Window *w, WindowEvent *e)
+{
+ switch (e->event) {
+ case WE_PAINT: {
+ DrawWindowWidgets(w);
+
+ int x = 1;
+ int y = 2 - w->vscroll.pos * 10;
+
+ int sel = WP(w, dropdown_d).selected_index;
+ int width = w->widget[0].right - 3;
+ int height = w->widget[0].bottom - 3;
+
+ DropDownList *list = WP(w, dropdown_d).list;
+
+ for (DropDownList::const_iterator it = list->begin(); it != list->end(); ++it) {
+ if (y >= 0 && y <= height) {
+ const DropDownListItem *item = *it;
+ if (item->String() != STR_NULL) {
+ if (sel == item->result) GfxFillRect(x + 1, y, x + width, y + 9, 0);
+
+ DrawStringTruncated(x + 2, y, item->String(), sel == item->result ? TC_WHITE : TC_BLACK, x + width);
+
+ if (item->masked) {
+ GfxFillRect(x, y, x + width, y + 9,
+ (1 << PALETTE_MODIFIER_GREYOUT) | _colour_gradient[_dropdown_menu_widgets[0].color][5]
+ );
+ }
+ } else {
+ int c1 = _colour_gradient[_dropdown_menu_widgets[0].color][3];
+ int c2 = _colour_gradient[_dropdown_menu_widgets[0].color][7];
+
+ GfxFillRect(x + 1, y + 3, x + w->width - 5, y + 3, c1);
+ GfxFillRect(x + 1, y + 4, x + w->width - 5, y + 4, c2);
+ }
+ }
+ y += 10;
+ }
+ } break;
+
+ case WE_CLICK: {
+ if (e->we.click.widget != 0) break;
+ int item = GetDropDownItem(w);
+ if (item >= 0) {
+ WP(w, dropdown_d).click_delay = 4;
+ WP(w, dropdown_d).selected_index = item;
+ SetWindowDirty(w);
+ }
+ } break;
+
+ case WE_MOUSELOOP: {
+ Window *w2 = FindWindowById(WP(w, dropdown_d).parent_wnd_class, WP(w,dropdown_d).parent_wnd_num);
+ if (w2 == NULL) {
+ DeleteWindow(w);
+ return;
+ }
+
+ if (WP(w, dropdown_d).click_delay != 0 && --WP(w,dropdown_d).click_delay == 0) {
+ WindowEvent e;
+ e.event = WE_DROPDOWN_SELECT;
+ e.we.dropdown.button = WP(w, dropdown_d).parent_button;
+ e.we.dropdown.index = WP(w, dropdown_d).selected_index;
+ w2->wndproc(w2, &e);
+ DeleteWindow(w);
+ return;
+ }
+
+ if (WP(w, dropdown_d).drag_mode) {
+ int item = GetDropDownItem(w);
+
+ if (!_left_button_clicked) {
+ WP(w, dropdown_d).drag_mode = false;
+ if (item < 0) return;
+ WP(w, dropdown_d).click_delay = 2;
+ } else {
+ if (item < 0) return;
+ }
+
+ WP(w, dropdown_d).selected_index = item;
+ SetWindowDirty(w);
+ }
+ } break;
+
+ case WE_DESTROY: {
+ Window *w2 = FindWindowById(WP(w, dropdown_d).parent_wnd_class, WP(w,dropdown_d).parent_wnd_num);
+ if (w2 != NULL) {
+ w2->RaiseWidget(WP(w, dropdown_d).parent_button);
+ w2->InvalidateWidget(WP(w, dropdown_d).parent_button);
+ }
+
+ delete WP(w, dropdown_d).list;
+ } break;
+ }
+}
+
+void ShowDropDownList(Window *w, DropDownList *list, int selected, int button)
+{
+ bool is_dropdown_menu_shown = w->IsWidgetLowered(button);
+
+ DeleteWindowById(WC_DROPDOWN_MENU, 0);
+
+ if (is_dropdown_menu_shown) {
+ delete list;
+ return;
+ }
+
+ w->LowerWidget(button);
+ w->InvalidateWidget(button);
+
+ /* Our parent's button widget is used to determine where to place the drop
+ * down list window. */
+ const Widget *wi = &w->widget[button];
+
+ /* The preferred position is just below the dropdown calling widget */
+ int top = w->top + wi->bottom + 2;
+ int height = list->size() * 10 + 4;
+
+ /* Check if the status bar is visible, as we don't want to draw over it */
+ Window *w3 = FindWindowById(WC_STATUS_BAR, 0);
+ int screen_bottom = w3 == NULL ? _screen.height : w3->top;
+
+ bool scroll = false;
+
+ /* Check if the dropdown will fully fit below the widget */
+ if (top + height >= screen_bottom) {
+ w3 = FindWindowById(WC_MAIN_TOOLBAR, 0);
+ int screen_top = w3 == NULL ? 0 : w3->top + w3->height;
+
+ /* If not, check if it will fit above the widget */
+ if (w->top + wi->top - height - 1 > screen_top) {
+ top = w->top + wi->top - height - 1;
+ } else {
+ /* ... and lastly if it won't, enable the scroll bar and fit the
+ * list in below the widget */
+ int rows = (screen_bottom - 4 - top) / 10;
+ height = rows * 10 + 4;
+ scroll = true;
+ }
+ }
+
+ Window *dw = AllocateWindow(
+ w->left + wi[-1].left + 1,
+ top,
+ wi->right - wi[-1].left + 1,
+ height,
+ DropDownMenuWndProc,
+ WC_DROPDOWN_MENU,
+ _dropdown_menu_widgets);
+
+ dw->widget[0].color = wi->color;
+ dw->widget[0].right = wi->right - wi[-1].left;
+ dw->widget[0].bottom = height - 1;
+
+ dw->SetWidgetHiddenState(1, !scroll);
+
+ if (scroll) {
+ /* We're scrolling, so enable the scroll bar and shrink the list by
+ * the scrollbar's width */
+ dw->widget[1].color = wi->color;
+ dw->widget[1].right = dw->widget[0].right;
+ dw->widget[1].left = dw->widget[1].right - 11;
+ dw->widget[1].bottom = height - 1;
+ dw->widget[0].right -= 12;
+
+ dw->vscroll.cap = (height - 4) / 10;
+ dw->vscroll.count = list->size();
+ }
+
+ dw->desc_flags = WDF_DEF_WIDGET;
+ dw->flags4 &= ~WF_WHITE_BORDER_MASK;
+
+ WP(dw, dropdown_d).parent_wnd_class = w->window_class;
+ WP(dw, dropdown_d).parent_wnd_num = w->window_number;
+ WP(dw, dropdown_d).parent_button = button;
+ WP(dw, dropdown_d).list = list;
+ WP(dw, dropdown_d).selected_index = selected;
+ WP(dw, dropdown_d).click_delay = 0;
+ WP(dw, dropdown_d).drag_mode = true;
+}
+
+void ShowDropDownMenu(Window *w, const StringID *strings, int selected, int button, uint32 disabled_mask, uint32 hidden_mask)
+{
+ uint result = 0;
+ DropDownList *list = new DropDownList();
+
+ for (uint i = 0; strings[i] != INVALID_STRING_ID; i++) {
+ if (!HasBit(hidden_mask, i)) {
+ list->push_back(new DropDownListStringItem(strings[i], result, HasBit(disabled_mask, i)));
+ }
+ result++;
+ }
+
+ /* No entries in the list? */
+ if (list->size() == 0) {
+ delete list;
+ return;
+ }
+
+ ShowDropDownList(w, list, selected, button);
+}
+
+void HideDropDownMenu(Window *pw)
+{
+ Window **wz;
+ FOR_ALL_WINDOWS(wz) {
+ if ((*wz)->window_class != WC_DROPDOWN_MENU) continue;
+
+ if (pw->window_class == WP(*wz, dropdown_d).parent_wnd_class &&
+ pw->window_number == WP(*wz, dropdown_d).parent_wnd_num) {
+ DeleteWindow(*wz);
+ break;
+ }
+ }
+}
+
diff --git a/src/widgets/dropdown_func.h b/src/widgets/dropdown_func.h
new file mode 100644
index 000000000..dd6b430bc
--- /dev/null
+++ b/src/widgets/dropdown_func.h
@@ -0,0 +1,12 @@
+/* $Id$ */
+
+#ifndef WIDGETS_DROPDOWN_FUNC_H
+#define WIDGETS_DROPDOWN_FUNC_H
+
+/* Show drop down menu containing a fixed list of strings */
+void ShowDropDownMenu(Window *w, const StringID *strings, int selected, int button, uint32 disabled_mask, uint32 hidden_mask);
+
+/* Hide drop down menu of a parent window */
+void HideDropDownMenu(Window *pw);
+
+#endif /* WIDGETS_DROPDOWN_FUNC_H */
diff --git a/src/widgets/dropdown_type.h b/src/widgets/dropdown_type.h
new file mode 100644
index 000000000..650edc5b1
--- /dev/null
+++ b/src/widgets/dropdown_type.h
@@ -0,0 +1,65 @@
+/* $Id$ */
+
+#ifndef WIDGETS_DROPDOWN_TYPE_H
+#define WIDGETS_DROPDOWN_TYPE_H
+
+#include "../window_type.h"
+#include <list>
+
+/**
+ * Base list item class from which others are derived. If placed in a list it
+ * will appear as a horizontal line in the menu.
+ */
+class DropDownListItem {
+public:
+ int result; ///< Result code to return to window on selection
+ bool masked; ///< Masked and unselectable item
+
+ virtual StringID String() const;
+};
+
+/**
+ * Common string list item.
+ */
+class DropDownListStringItem : public DropDownListItem {
+public:
+ StringID string; ///< String ID of item
+
+ DropDownListStringItem(StringID string, uint result, bool masked)
+ {
+ this->string = string;
+ this->result = result;
+ this->masked = masked;
+ }
+
+ StringID String() const;
+};
+
+/**
+ * String list item with parameters.
+ */
+class DropDownListParamStringItem : public DropDownListStringItem {
+public:
+ uint64 decode_params[10]; ///< Parameters of the string
+
+ StringID String() const;
+ void SetParam(uint index, uint64 value) { decode_params[index] = value; }
+};
+
+/**
+ * A drop down list is a collection of drop down list items.
+ */
+typedef std::list<DropDownListItem *> DropDownList;
+
+/**
+ * Show a drop down list.
+ * @param w Parent window for the list.
+ * @param list Prepopulated DropDownList. Will be deleted when the list is
+ * closed.
+ * @param selected The initially selected list item.
+ * @param button The widget within the parent window that is used to determine
+ * the list's location.
+ */
+void ShowDropDownList(Window *w, DropDownList *list, int selected, int button);
+
+#endif /* WIDGETS_DROPDOWN_TYPE_H */
generated by cgit v1.2.3-70-g09d2 (git 2.47.0) at 2024-11-27 21:42:52 +0000