bool
ListControl::OnMouseMove(PixelScalar x, PixelScalar y, unsigned keys)
{
// If we are currently dragging the ScrollBar slider
if (scroll_bar.IsDragging()) {
// -> Update ListBox origin
unsigned value =
scroll_bar.DragMove(length * item_height, GetHeight(), y);
SetPixelOrigin(value);
return true;
} else if (drag_mode == DragMode::CURSOR) {
if (abs(y - drag_y_window) > ((int)item_height / 5)) {
drag_mode = DragMode::SCROLL;
Invalidate_item(cursor);
} else
return true;
}
if (drag_mode == DragMode::SCROLL) {
int new_origin = drag_y - y;
SetPixelOrigin(new_origin);
#ifndef _WIN32_WCE
kinetic.MouseMove(GetPixelOrigin());
#endif
return true;
}
return PaintWindow::OnMouseMove(x, y, keys);
}
bool
ListControl::OnMouseMove(PixelPoint p, unsigned keys)
{
// If we are currently dragging the ScrollBar slider
if (scroll_bar.IsDragging()) {
// -> Update ListBox origin
if (UsePixelPan())
SetPixelOrigin(scroll_bar.DragMove(length * item_height, GetHeight(),
p.y));
else
SetOrigin(scroll_bar.DragMove(length, items_visible, p.y));
return true;
} else if (drag_mode == DragMode::CURSOR) {
if (abs(p.y - drag_y_window) > ((int)item_height / 5)) {
drag_mode = DragMode::SCROLL;
Invalidate_item(cursor);
} else
return true;
}
if (drag_mode == DragMode::SCROLL) {
int new_origin = drag_y - p.y;
SetPixelOrigin(new_origin);
if (UsePixelPan())
kinetic.MouseMove(GetPixelOrigin());
return true;
}
return PaintWindow::OnMouseMove(p, keys);
}
bool
ListControl::SetCursorIndex(unsigned i)
{
if (i >= length)
return false;
if (i == GetCursorIndex())
return true;
EnsureVisible(i);
Invalidate_item(cursor);
cursor = i;
Invalidate_item(cursor);
if (cursor_handler != nullptr)
cursor_handler->OnCursorMoved(i);
return true;
}
void
ListControl::drag_end()
{
if (drag_mode != DragMode::NONE) {
if (drag_mode == DragMode::CURSOR)
Invalidate_item(cursor);
drag_mode = DragMode::NONE;
ReleaseCapture();
}
}
bool
ListControl::OnMouseDown(PixelScalar x, PixelScalar y)
{
// End any previous drag
scroll_bar.DragEnd(this);
drag_end();
#ifndef _WIN32_WCE
kinetic_timer.Cancel();
#endif
RasterPoint Pos;
Pos.x = x;
Pos.y = y;
// If possible -> Give focus to the Control
const bool had_focus = HasFocus();
if (!had_focus)
SetFocus();
if (scroll_bar.IsInsideSlider(Pos)) {
// if click is on scrollbar handle
// -> start mouse drag
scroll_bar.DragBegin(this, Pos.y);
} else if (scroll_bar.IsInside(Pos)) {
// if click in scroll bar up/down/pgup/pgdn
if (scroll_bar.IsInsideUpArrow(Pos.y))
// up
MoveOrigin(-1);
else if (scroll_bar.IsInsideDownArrow(Pos.y))
// down
MoveOrigin(1);
else if (scroll_bar.IsAboveSlider(Pos.y))
// page up
MoveOrigin(-(int)items_visible);
else if (scroll_bar.IsBelowSlider(Pos.y))
// page down
MoveOrigin(items_visible);
} else {
// if click in ListBox area
// -> select appropriate item
int index = ItemIndexAt(y);
// If mouse was clicked outside the list items -> cancel
if (index < 0)
return false;
drag_y = GetPixelOrigin() + y;
drag_y_window = y;
if (had_focus && (unsigned)index == GetCursorIndex() &&
CanActivateItem()) {
drag_mode = DragMode::CURSOR;
Invalidate_item(cursor);
} else {
// If item was not selected before
// -> select it
SetCursorIndex(index);
drag_mode = DragMode::SCROLL;
}
#ifndef _WIN32_WCE
kinetic.MouseDown(GetPixelOrigin());
#endif
SetCapture();
}
return true;
}
void
ListControl::OnKillFocus()
{
PaintWindow::OnKillFocus();
Invalidate_item(cursor);
}
