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#if defined(Hiro_TextEdit)
namespace hiro {
auto pTextEdit::construct() -> void {
hwnd = CreateWindowEx(
WS_EX_CLIENTEDGE, L"EDIT", L"",
WS_CHILD | WS_TABSTOP | WS_VSCROLL | ES_AUTOVSCROLL | ES_MULTILINE | ES_WANTRETURN | (!state().wordWrap ? WS_HSCROLL | ES_AUTOHSCROLL : 0),
0, 0, 0, 0, _parentHandle(), nullptr, GetModuleHandle(0), 0
);
pWidget::construct();
setBackgroundColor(state().backgroundColor);
setEditable(state().editable);
setText(state().text);
setTextCursor(state().textCursor);
}
auto pTextEdit::destruct() -> void {
state().text = text();
if(backgroundBrush) { DeleteObject(backgroundBrush); backgroundBrush = 0; }
DestroyWindow(hwnd);
}
auto pTextEdit::setBackgroundColor(Color color) -> void {
if(backgroundBrush) { DeleteObject(backgroundBrush); backgroundBrush = 0; }
backgroundBrush = CreateSolidBrush(color ? CreateRGB(color) : GetSysColor(COLOR_WINDOW));
InvalidateRect(hwnd, 0, true);
}
auto pTextEdit::setEditable(bool editable) -> void {
SendMessage(hwnd, EM_SETREADONLY, editable == false, (LPARAM)0);
}
auto pTextEdit::setForegroundColor(Color color) -> void {
InvalidateRect(hwnd, 0, true);
}
auto pTextEdit::setText(string text) -> void {
auto lock = acquire();
text.replace("\r", "");
text.replace("\n", "\r\n");
SetWindowText(hwnd, utf16_t(text));
}
auto pTextEdit::setTextCursor(TextCursor cursor) -> void {
s32 end = GetWindowTextLength(hwnd);
s32 offset = max(0, min(end, cursor.offset()));
s32 length = max(0, min(end, cursor.offset() + cursor.length()));
Edit_SetSel(hwnd, offset, length);
Edit_ScrollCaret(hwnd);
}
auto pTextEdit::setWordWrap(bool wordWrap) -> void {
//ES_AUTOHSCROLL cannot be changed after widget creation.
//As a result, we must destroy and re-create widget to change this setting.
reconstruct();
}
auto pTextEdit::text() const -> string {
u32 length = GetWindowTextLength(hwnd);
wchar_t buffer[length + 1];
GetWindowText(hwnd, buffer, length + 1);
buffer[length] = 0;
string text = (const char*)utf8_t(buffer);
text.replace("\r", "");
return text;
}
auto pTextEdit::textCursor() const -> TextCursor {
return state().textCursor;
}
//
auto pTextEdit::onChange() -> void {
if(!locked()) self().doChange();
}
auto pTextEdit::windowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) -> maybe<LRESULT> {
if(msg == WM_KEYDOWN) {
if(wparam == 'A' && GetKeyState(VK_CONTROL) < 0) {
//Ctrl+A = select all text
//note: this is not a standard accelerator on Windows
Edit_SetSel(hwnd, 0, ~0);
return true;
} else if(wparam == 'V' && GetKeyState(VK_CONTROL) < 0) {
//Ctrl+V = paste text
//note: this formats Unix (LF) and OS9 (CR) line-endings to Windows (CR+LF) line-endings
//this is necessary as the EDIT control only supports Windows line-endings
OpenClipboard(hwnd);
if(auto handle = GetClipboardData(CF_UNICODETEXT)) {
if(auto text = (wchar_t*)GlobalLock(handle)) {
string data = (const char*)utf8_t(text);
data.replace("\r\n", "\n");
data.replace("\r", "\n");
data.replace("\n", "\r\n");
GlobalUnlock(handle);
utf16_t output(data);
if(auto resource = GlobalAlloc(GMEM_MOVEABLE, (wcslen(output) + 1) * sizeof(wchar_t))) {
if(auto write = (wchar_t*)GlobalLock(resource)) {
wcscpy(write, output);
GlobalUnlock(write);
if(SetClipboardData(CF_UNICODETEXT, resource) == nullptr) {
GlobalFree(resource);
}
}
}
}
}
CloseClipboard();
}
}
return pWidget::windowProc(hwnd, msg, wparam, lparam);
}
}
#endif
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