(svn r11848) -Codechange: New class-based drop down list functionality. Lists are now dynamically generated, and can include parameters, or be extended however needed.
This commit is contained in:
peter1138
230
src/widget.cpp
230
src/widget.cpp
@@ -9,6 +9,7 @@
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#include "gfx_func.h"
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#include "window_gui.h"
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#include "window_func.h"
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#include "widgets/dropdown_func.h"
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#include "table/sprites.h"
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#include "table/strings.h"
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@@ -484,235 +485,6 @@ draw_default:;
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}
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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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byte item, counter;
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int y;
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if (GetWidgetFromPos(w, _cursor.pos.x - w->left, _cursor.pos.y - w->top) < 0)
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return -1;
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y = _cursor.pos.y - w->top - 2 + w->vscroll.pos * 10;
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if (y < 0)
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return - 1;
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item = y / 10;
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if (item >= WP(w, dropdown_d).num_items || (HasBit(WP(w,dropdown_d).disabled_state, item) && !HasBit(WP(w,dropdown_d).hidden_state, item)) || WP(w,dropdown_d).items[item] == 0)
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return - 1;
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/* Skip hidden items -- +1 for each hidden item before the clicked item. */
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for (counter = 0; item >= counter; ++counter)
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if (HasBit(WP(w, dropdown_d).hidden_state, counter)) item++;
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return item;
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}
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static void DropdownMenuWndProc(Window *w, WindowEvent *e)
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{
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int item;
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switch (e->event) {
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case WE_PAINT: {
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int x,y,i,sel;
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int width, height;
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DrawWindowWidgets(w);
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x = 1;
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y = 2 - w->vscroll.pos * 10;
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sel = WP(w, dropdown_d).selected_index;
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width = w->widget[0].right - 3;
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height = w->widget[0].bottom - 3;
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for (i = 0; WP(w, dropdown_d).items[i] != INVALID_STRING_ID; i++, sel--) {
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if (HasBit(WP(w, dropdown_d).hidden_state, i)) continue;
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if (y >= 0 && y <= height) {
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if (WP(w, dropdown_d).items[i] != STR_NULL) {
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if (sel == 0) GfxFillRect(x + 1, y, x + width, y + 9, 0);
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DrawStringTruncated(x + 2, y, WP(w, dropdown_d).items[i], sel == 0 ? TC_WHITE : TC_BLACK, x + width);
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if (HasBit(WP(w, dropdown_d).disabled_state, i)) {
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GfxFillRect(x, y, x + width, y + 9,
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(1 << PALETTE_MODIFIER_GREYOUT) | _colour_gradient[_dropdown_menu_widgets[0].color][5]
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);
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}
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} else {
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int c1 = _colour_gradient[_dropdown_menu_widgets[0].color][3];
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int c2 = _colour_gradient[_dropdown_menu_widgets[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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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_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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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 (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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} break;
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}
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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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int i;
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const Widget *wi;
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Window *w2;
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const Window *w3;
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bool is_dropdown_menu_shown = w->IsWidgetLowered(button);
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int top, height;
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int screen_top, screen_bottom;
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bool scroll = false;
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DeleteWindowById(WC_DROPDOWN_MENU, 0);
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if (is_dropdown_menu_shown) return;
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w->LowerWidget(button);
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w->InvalidateWidget(button);
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for (i = 0; strings[i] != INVALID_STRING_ID; i++) {}
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if (i == 0) return;
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wi = &w->widget[button];
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if (hidden_mask != 0) {
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uint j;
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for (j = 0; strings[j] != INVALID_STRING_ID; j++) {
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if (HasBit(hidden_mask, j)) i--;
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}
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}
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/* The preferred position is just below the dropdown calling widget */
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top = w->top + wi->bottom + 2;
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height = i * 10 + 4;
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w3 = FindWindowById(WC_STATUS_BAR, 0);
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screen_bottom = w3 == NULL ? _screen.height : w3->top;
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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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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 - 1 > screen_top) {
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top = w->top + wi->top - height - 1;
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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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w2 = AllocateWindow(
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w->left + wi[-1].left + 1,
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top,
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wi->right - wi[-1].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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w2->widget[0].color = wi->color;
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w2->widget[0].right = wi->right - wi[-1].left;
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w2->widget[0].bottom = height - 1;
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w2->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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w2->widget[1].color = wi->color;
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w2->widget[1].right = w2->widget[0].right;
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w2->widget[1].left = w2->widget[1].right - 11;
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w2->widget[1].bottom = height - 1;
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w2->widget[0].right -= 12;
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w2->vscroll.cap = (height - 4) / 10;
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w2->vscroll.count = i;
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}
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w2->desc_flags = WDF_DEF_WIDGET;
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w2->flags4 &= ~WF_WHITE_BORDER_MASK;
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WP(w2, dropdown_d).disabled_state = disabled_mask;
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WP(w2, dropdown_d).hidden_state = hidden_mask;
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WP(w2, dropdown_d).parent_wnd_class = w->window_class;
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WP(w2, dropdown_d).parent_wnd_num = w->window_number;
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WP(w2, dropdown_d).parent_button = button;
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WP(w2, dropdown_d).num_items = i;
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WP(w2, dropdown_d).selected_index = selected;
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WP(w2, dropdown_d).items = strings;
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WP(w2, dropdown_d).click_delay = 0;
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WP(w2, dropdown_d).drag_mode = true;
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}
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static void ResizeWidgets(Window *w, byte a, byte b)
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{
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int16 offset = w->widget[a].left;
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