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namespace phoenix {
Size pVerticalScroller::minimumSize() {
return {18, 0};
}
void pVerticalScroller::setLength(unsigned length) {
length += (length == 0);
SetScrollRange(hwnd, SB_CTL, 0, length - 1, TRUE);
verticalScroller.setPosition(0);
}
void pVerticalScroller::setPosition(unsigned position) {
SetScrollPos(hwnd, SB_CTL, position, TRUE);
}
void pVerticalScroller::constructor() {
hwnd = CreateWindow(
L"SCROLLBAR", L"", WS_CHILD | SBS_VERT,
0, 0, 0, 0, parentHwnd, (HMENU)id, GetModuleHandle(0), 0
);
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)&verticalScroller);
unsigned position = verticalScroller.state.position;
setLength(verticalScroller.state.length);
verticalScroller.setPosition(position);
synchronize();
}
void pVerticalScroller::destructor() {
DestroyWindow(hwnd);
}
void pVerticalScroller::orphan() {
destructor();
constructor();
}
void pVerticalScroller::onChange(WPARAM wparam) {
unsigned position = ScrollEvent(hwnd, wparam);
if(position == verticalScroller.state.position) return;
verticalScroller.state.position = position;
if(verticalScroller.onChange) verticalScroller.onChange();
}
}
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