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bsnes/hiro/windows/widget/list-view.cpp

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#if defined(Hiro_ListView)
namespace hiro {
static auto CALLBACK ListView_windowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) -> LRESULT {
if(auto object = (mObject*)GetWindowLongPtr(hwnd, GWLP_USERDATA)) {
if(auto listView = dynamic_cast<mListView*>(object)) {
if(auto self = listView->self()) {
if(!listView->enabled(true)) {
if(msg == WM_KEYDOWN || msg == WM_KEYUP || msg == WM_SYSKEYDOWN || msg == WM_SYSKEYUP) {
//WC_LISTVIEW responds to key messages even when its HWND is disabled
//the control should be inactive when disabled; so we intercept the messages here
return false;
}
}
return self->windowProc(hwnd, msg, wparam, lparam);
}
}
}
return DefWindowProc(hwnd, msg, wparam, lparam);
}
auto pListView::construct() -> void {
hwnd = CreateWindowEx(
WS_EX_CLIENTEDGE, WC_LISTVIEW, L"",
WS_CHILD | WS_TABSTOP | LVS_REPORT | LVS_SHOWSELALWAYS,
0, 0, 0, 0, _parentHandle(), nullptr, GetModuleHandle(0), 0
);
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)&reference);
windowProc = (WindowProc)GetWindowLongPtr(hwnd, GWLP_WNDPROC);
SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)&ListView_windowProc);
ListView_SetExtendedListViewStyle(hwnd, LVS_EX_FULLROWSELECT | LVS_EX_SUBITEMIMAGES);
pWidget::_setState();
setBackgroundColor(state().backgroundColor);
setBatchable(state().batchable);
setBordered(state().bordered);
_setIcons();
_setSortable();
resizeColumns();
}
auto pListView::destruct() -> void {
if(imageList) { ImageList_Destroy(imageList); imageList = nullptr; }
DestroyWindow(hwnd);
}
auto pListView::append(sListViewHeader header) -> void {
}
auto pListView::append(sListViewItem item) -> void {
}
auto pListView::remove(sListViewHeader header) -> void {
LVCOLUMN lvColumn{LVCF_WIDTH};
while(ListView_GetColumn(hwnd, 0, &lvColumn)) {
ListView_DeleteColumn(hwnd, 0);
}
}
auto pListView::remove(sListViewItem item) -> void {
}
auto pListView::resizeColumns() -> void {
lock();
if(auto& header = state().header) {
vector<signed> widths;
signed minimumWidth = 0;
signed expandable = 0;
for(auto column : range(header->columnCount())) {
signed width = _width(column);
widths.append(width);
minimumWidth += width;
if(header->column(column).expandable()) expandable++;
}
signed maximumWidth = self().geometry().width() - 4;
SCROLLBARINFO sbInfo{sizeof(SCROLLBARINFO)};
if(GetScrollBarInfo(hwnd, OBJID_VSCROLL, &sbInfo)) {
if(!(sbInfo.rgstate[0] & STATE_SYSTEM_INVISIBLE)) {
maximumWidth -= sbInfo.rcScrollBar.right - sbInfo.rcScrollBar.left;
}
}
signed expandWidth = 0;
if(expandable && maximumWidth > minimumWidth) {
expandWidth = (maximumWidth - minimumWidth) / expandable;
}
for(auto column : range(header->columnCount())) {
if(auto self = header->state.columns[column]->self()) {
signed width = widths[column];
if(self->state().expandable) width += expandWidth;
self->_width = width;
self->_setState();
}
}
}
unlock();
}
auto pListView::setAlignment(Alignment alignment) -> void {
}
auto pListView::setBackgroundColor(Color color) -> void {
if(!color) color = {255, 255, 255};
ListView_SetBkColor(hwnd, RGB(color.red(), color.green(), color.blue()));
}
auto pListView::setBatchable(bool batchable) -> void {
auto style = GetWindowLong(hwnd, GWL_STYLE);
!batchable ? style |= LVS_SINGLESEL : style &=~ LVS_SINGLESEL;
SetWindowLong(hwnd, GWL_STYLE, style);
}
auto pListView::setBordered(bool bordered) -> void {
//rendered via onCustomDraw
}
auto pListView::setForegroundColor(Color color) -> void {
}
auto pListView::setGeometry(Geometry geometry) -> void {
pWidget::setGeometry(geometry);
if(auto& header = state().header) {
for(auto& column : header->state.columns) {
if(column->state.expandable) return resizeColumns();
}
}
}
/*auto pListView::setHeaderVisible(bool visible) -> void {
auto style = GetWindowLong(hwnd, GWL_STYLE);
!visible ? style |= LVS_NOCOLUMNHEADER : style &=~ LVS_NOCOLUMNHEADER;
SetWindowLong(hwnd, GWL_STYLE, style);
}*/
auto pListView::onActivate(LPARAM lparam) -> void {
auto nmlistview = (LPNMLISTVIEW)lparam;
if(ListView_GetSelectedCount(hwnd) == 0) return;
if(!locked()) {
//LVN_ITEMACTIVATE is not re-entrant until DispatchMessage() completes
//thus, we don't call self().doActivate() here
PostMessageOnce(_parentHandle(), AppMessage::ListView_onActivate, 0, (LPARAM)&reference);
}
}
auto pListView::onChange(LPARAM lparam) -> void {
auto nmlistview = (LPNMLISTVIEW)lparam;
if(!(nmlistview->uChanged & LVIF_STATE)) return;
bool modified = false;
for(auto& item : state().items) {
bool selected = ListView_GetItemState(hwnd, item->offset(), LVIS_SELECTED) & LVIS_SELECTED;
if(item->state.selected != selected) {
modified = true;
item->state.selected = selected;
}
}
if(modified && !locked()) {
//state event change messages are sent for every item
//so when doing a batch select/deselect; this can generate several messages
//we use a delayed AppMessage so that only one callback event is fired off
PostMessageOnce(_parentHandle(), AppMessage::ListView_onChange, 0, (LPARAM)&reference);
}
}
auto pListView::onContext(LPARAM lparam) -> void {
auto nmitemactivate = (LPNMITEMACTIVATE)lparam;
return self().doContext();
}
auto pListView::onCustomDraw(LPARAM lparam) -> LRESULT {
auto lvcd = (LPNMLVCUSTOMDRAW)lparam;
switch(lvcd->nmcd.dwDrawStage) {
default: return CDRF_DODEFAULT;
case CDDS_PREPAINT: return CDRF_NOTIFYITEMDRAW;
case CDDS_ITEMPREPAINT: return CDRF_NOTIFYSUBITEMDRAW | CDRF_NOTIFYPOSTPAINT;
case CDDS_ITEMPREPAINT | CDDS_SUBITEM: return CDRF_SKIPDEFAULT;
case CDDS_ITEMPOSTPAINT: {
HDC hdc = lvcd->nmcd.hdc;
HDC hdcSource = CreateCompatibleDC(hdc);
unsigned row = lvcd->nmcd.dwItemSpec;
auto& header = state().header;
if(!header) break;
for(auto column : range(header->columnCount())) {
RECT rc, rcLabel;
ListView_GetSubItemRect(hwnd, row, column, LVIR_BOUNDS, &rc);
ListView_GetSubItemRect(hwnd, row, column, LVIR_LABEL, &rcLabel);
rc.right = rcLabel.right; //bounds of column 0 returns width of entire item
signed iconSize = rc.bottom - rc.top - 1;
bool selected = state().items(row)->state.selected;
if(auto cell = self().item(row)->cell(column)) {
auto backgroundColor = cell->backgroundColor(true);
HBRUSH brush = CreateSolidBrush(
selected ? GetSysColor(COLOR_HIGHLIGHT)
: backgroundColor ? CreateRGB(backgroundColor)
: GetSysColor(COLOR_WINDOW)
);
FillRect(hdc, &rc, brush);
DeleteObject(brush);
if(cell->state.checkable) {
if(auto htheme = OpenThemeData(hwnd, L"BUTTON")) {
unsigned state = cell->state.checked ? CBS_CHECKEDNORMAL : CBS_UNCHECKEDNORMAL;
SIZE size;
GetThemePartSize(htheme, hdc, BP_CHECKBOX, state, nullptr, TS_TRUE, &size);
signed center = max(0, (rc.bottom - rc.top - size.cy) / 2);
RECT rd{rc.left + center, rc.top + center, rc.left + center + size.cx, rc.top + center + size.cy};
DrawThemeBackground(htheme, hdc, BP_CHECKBOX, state, &rd, nullptr);
CloseThemeData(htheme);
}
rc.left += iconSize + 2;
} else {
rc.left += 2;
}
if(auto icon = cell->state.icon) {
icon.scale(iconSize, iconSize);
icon.transform();
auto bitmap = CreateBitmap(icon);
SelectBitmap(hdcSource, bitmap);
BLENDFUNCTION blend{AC_SRC_OVER, 0, (BYTE)(selected ? 128 : 255), AC_SRC_ALPHA};
AlphaBlend(hdc, rc.left, rc.top, iconSize, iconSize, hdcSource, 0, 0, iconSize, iconSize, blend);
DeleteObject(bitmap);
rc.left += iconSize + 2;
}
if(auto text = cell->state.text) {
auto alignment = cell->alignment(true);
if(!alignment) alignment = {0.0, 0.5};
utf16_t wText(text);
SetBkMode(hdc, TRANSPARENT);
auto foregroundColor = cell->foregroundColor(true);
SetTextColor(hdc,
selected ? GetSysColor(COLOR_HIGHLIGHTTEXT)
: foregroundColor ? CreateRGB(foregroundColor)
: GetSysColor(COLOR_WINDOWTEXT)
);
auto style = DT_SINGLELINE | DT_NOPREFIX | DT_END_ELLIPSIS;
style |= alignment.horizontal() < 0.333 ? DT_LEFT : alignment.horizontal() > 0.666 ? DT_RIGHT : DT_CENTER;
style |= alignment.vertical() < 0.333 ? DT_TOP : alignment.vertical() > 0.666 ? DT_BOTTOM : DT_VCENTER;
rc.right -= 2;
auto font = pFont::create(cell->font(true));
SelectObject(hdc, font);
DrawText(hdc, wText, -1, &rc, style);
DeleteObject(font);
}
} else {
auto backgroundColor = state().backgroundColor;
HBRUSH brush = CreateSolidBrush(
selected ? GetSysColor(COLOR_HIGHLIGHT)
: backgroundColor ? CreateRGB(backgroundColor)
: GetSysColor(COLOR_WINDOW)
);
FillRect(hdc, &rc, brush);
DeleteObject(brush);
}
if(state().bordered) {
ListView_GetSubItemRect(hwnd, row, column, LVIR_BOUNDS, &rc);
rc.top = rc.bottom - 1;
FillRect(hdc, &rc, (HBRUSH)GetStockObject(LTGRAY_BRUSH));
ListView_GetSubItemRect(hwnd, row, column, LVIR_LABEL, &rc);
rc.left = rc.right - 1;
FillRect(hdc, &rc, (HBRUSH)GetStockObject(LTGRAY_BRUSH));
}
}
DeleteDC(hdcSource);
return CDRF_SKIPDEFAULT;
}
}
return CDRF_SKIPDEFAULT;
}
auto pListView::onSort(LPARAM lparam) -> void {
auto nmlistview = (LPNMLISTVIEW)lparam;
if(auto& header = state().header) {
if(auto column = header->column(nmlistview->iSubItem)) {
if(column->sortable()) self().doSort(column);
}
}
}
auto pListView::onToggle(LPARAM lparam) -> void {
auto itemActivate = (LPNMITEMACTIVATE)lparam;
LVHITTESTINFO hitTestInfo{0};
hitTestInfo.pt = itemActivate->ptAction;
ListView_SubItemHitTest(hwnd, &hitTestInfo);
if(auto cell = self().item(hitTestInfo.iItem).cell(hitTestInfo.iSubItem)) {
if(cell->state.checkable) {
cell->state.checked = !cell->state.checked;
if(!locked()) self().doToggle(cell);
//todo: try to find a way to only repaint this cell instead of the entire control to reduce flickering
PostMessageOnce(_parentHandle(), AppMessage::ListView_doPaint, 0, (LPARAM)&reference);
}
}
}
auto pListView::_backgroundColor(unsigned _row, unsigned _column) -> Color {
if(auto item = self().item(_row)) {
if(auto cell = item->cell(_column)) {
if(auto color = cell->backgroundColor()) return color;
}
if(auto color = item->backgroundColor()) return color;
}
// if(auto column = self().column(_column)) {
// if(auto color = column->backgroundColor()) return color;
// }
if(auto color = self().backgroundColor()) return color;
// if(state().columns.size() >= 2 && _row % 2) return {240, 240, 240};
return {255, 255, 255};
}
auto pListView::_cellWidth(unsigned _row, unsigned _column) -> unsigned {
unsigned width = 6;
if(auto item = self().item(_row)) {
if(auto cell = item->cell(_column)) {
if(cell->state.checkable) {
width += 16 + 2;
}
if(auto& icon = cell->state.icon) {
width += 16 + 2;
}
if(auto& text = cell->state.text) {
width += Font::size(_font(_row, _column), text).width();
}
}
}
return width;
}
auto pListView::_columnWidth(unsigned _column) -> unsigned {
unsigned width = 12;
if(auto header = state().header) {
if(auto column = header->column(_column)) {
if(auto& icon = column->state.icon) {
width += 16 + 12; //yes; icon spacing in column headers is excessive
}
if(auto& text = column->state.text) {
width += Font::size(self().font(true), text).width();
}
}
}
return width;
}
auto pListView::_font(unsigned _row, unsigned _column) -> string {
if(auto item = self().item(_row)) {
if(auto cell = item->cell(_column)) {
if(auto font = cell->font()) return font;
}
if(auto font = item->font()) return font;
}
// if(auto column = self().column(_column)) {
// if(auto font = column->font()) return font;
// }
if(auto font = self().font(true)) return font;
return Font::sans(8);
}
auto pListView::_foregroundColor(unsigned _row, unsigned _column) -> Color {
if(auto item = self().item(_row)) {
if(auto cell = item->cell(_column)) {
if(auto color = cell->foregroundColor()) return color;
}
if(auto color = item->foregroundColor()) return color;
}
// if(auto column = self().column(_column)) {
// if(auto color = column->foregroundColor()) return color;
// }
if(auto color = self().foregroundColor()) return color;
return {0, 0, 0};
}
auto pListView::_setIcons() -> void {
ListView_SetImageList(hwnd, nullptr, LVSIL_SMALL);
if(imageList) ImageList_Destroy(imageList);
imageList = ImageList_Create(16, 16, ILC_COLOR32, 1, 0);
ListView_SetImageList(hwnd, imageList, LVSIL_SMALL);
if(auto& header = state().header) {
for(auto column : range(header->columnCount())) {
auto icon = header->state.columns[column]->state.icon;
if(icon) {
icon.scale(16, 16);
icon.transform();
} else {
icon.allocate(16, 16);
icon.fill(0x00ffffff);
}
auto bitmap = CreateBitmap(icon);
ImageList_Add(imageList, bitmap, nullptr);
DeleteObject(bitmap);
}
}
//empty icon used for ListViewItems (drawn manually via onCustomDraw)
image icon;
icon.allocate(16, 16);
icon.fill(0x00ffffff);
auto bitmap = CreateBitmap(icon);
ImageList_Add(imageList, bitmap, nullptr);
DeleteObject(bitmap);
}
auto pListView::_setSortable() -> void {
bool sortable = false;
if(auto& header = state().header) {
for(auto& column : header->state.columns) {
if(column->sortable()) sortable = true;
}
}
//note: this won't change the visual style: WC_LISTVIEW caches this in CreateWindow
auto style = GetWindowLong(hwnd, GWL_STYLE);
!sortable ? style |= LVS_NOSORTHEADER : style &=~ LVS_NOSORTHEADER;
SetWindowLong(hwnd, GWL_STYLE, style);
}
auto pListView::_width(unsigned column) -> unsigned {
if(auto& header = state().header) {
if(auto width = header->state.columns[column]->width()) return width;
unsigned width = 1;
if(header->visible()) width = max(width, _columnWidth(column));
for(auto row : range(state().items)) {
width = max(width, _cellWidth(row, column));
}
return width;
}
return 1;
}
}
#endif
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