mirror of https://github.com/bsnes-emu/bsnes.git
71 lines
2.4 KiB
C++
Executable File
71 lines
2.4 KiB
C++
Executable File
#if defined(Hiro_ComboButton)
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namespace hiro {
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auto pComboButton::construct() -> void {
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hwnd = CreateWindow(
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L"COMBOBOX", L"",
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WS_CHILD | WS_TABSTOP | CBS_DROPDOWNLIST | CBS_HASSTRINGS,
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0, 0, 0, 0,
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_parentHandle(), nullptr, GetModuleHandle(0), 0
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);
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pWidget::construct();
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for(auto& item : state().items) append(item);
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}
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auto pComboButton::destruct() -> void {
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DestroyWindow(hwnd);
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}
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auto pComboButton::append(sComboButtonItem item) -> void {
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lock();
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SendMessage(hwnd, CB_ADDSTRING, 0, (LPARAM)(wchar_t*)utf16_t(item->state.text));
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if(item->state.selected) SendMessage(hwnd, CB_SETCURSEL, item->offset(), 0);
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if(SendMessage(hwnd, CB_GETCURSEL, 0, 0) == CB_ERR) item->setSelected();
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unlock();
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}
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auto pComboButton::minimumSize() const -> Size {
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signed width = 0;
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for(auto& item : state().items) {
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width = max(width, pFont::size(hfont, item->state.text).width());
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}
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return {width + 24_sx, pFont::size(hfont, " ").height() + 10_sy};
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}
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auto pComboButton::remove(sComboButtonItem item) -> void {
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lock();
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SendMessage(hwnd, CB_DELETESTRING, item->offset(), 0);
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if(item->state.selected) SendMessage(hwnd, CB_SETCURSEL, 0, 0);
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unlock();
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}
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auto pComboButton::reset() -> void {
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SendMessage(hwnd, CB_RESETCONTENT, 0, 0);
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}
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//Windows overrides the height parameter for a ComboButton's SetWindowPos to be the drop-down list height.
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//the canonical way to set the actual height is through CB_SETITEMHEIGHT. However, doing so is bugged.
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//the ComboButton will end up not being painted for ~500ms after calling ShowWindow(hwnd, SW_NORMAL) on it.
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//thus, implementing windows that use multiple pages of controls via toggling visibility will flicker heavily.
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//as a result, the best we can do is center the actual widget within the requested space.
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auto pComboButton::setGeometry(Geometry geometry) -> void {
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//since the ComboButton has a fixed height, it will always be the same, even before calling setGeometry() once.
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RECT rc;
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GetWindowRect(hwnd, &rc);
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geometry.setY(geometry.y() + (geometry.height() - (rc.bottom - rc.top)));
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pWidget::setGeometry({geometry.x(), geometry.y(), geometry.width(), 1});
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}
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auto pComboButton::onChange() -> void {
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signed offset = SendMessage(hwnd, CB_GETCURSEL, 0, 0);
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if(offset == CB_ERR) return;
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for(auto& item : state().items) item->state.selected = false;
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if(auto item = self().item(offset)) item->setSelected();
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self().doChange();
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}
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}
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#endif
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