void MoveToCenter() {
const PixelSize window_size = GetSize();
const PixelSize parent_size = GetParentClientRect().GetSize();
PixelScalar dialog_x = (parent_size.cx - window_size.cx) / 2;
PixelScalar dialog_y = (parent_size.cy - window_size.cy) / 2;
Move(dialog_x, dialog_y);
}
bool
Window::IsMaximised() const
{
const PixelRect this_rc = GetPosition();
const PixelRect parent_rc = GetParentClientRect();
return (this_rc.right - this_rc.left) >= (parent_rc.right - parent_rc.left) &&
(this_rc.bottom - this_rc.top) >= (parent_rc.bottom - parent_rc.top);
}
void
WidgetDialog::AutoSize()
{
const PixelRect parent_rc = GetParentClientRect();
const PixelSize parent_size = parent_rc.GetSize();
widget.Prepare();
PixelSize min_size = widget.Get()->GetMinimumSize();
min_size.cy += GetTitleHeight();
PixelSize max_size = widget.Get()->GetMaximumSize();
max_size.cy += GetTitleHeight();
const PixelScalar min_height_with_buttons =
min_size.cy + Layout::GetMaximumControlHeight();
const PixelScalar max_height_with_buttons =
max_size.cy + Layout::GetMaximumControlHeight();
if (/* need full dialog height even for minimum widget height? */
min_height_with_buttons >= parent_size.cy ||
/* try to avoid putting buttons left on portrait screens; try to
comply with maximum widget height only on landscape
screens */
(parent_size.cx > parent_size.cy &&
max_height_with_buttons >= parent_size.cy)) {
/* need full height, buttons must be left */
PixelRect rc = parent_rc;
if (max_size.cy < parent_size.cy)
rc.bottom = rc.top + max_size.cy;
PixelRect remaining = buttons.LeftLayout(rc);
PixelSize remaining_size = remaining.GetSize();
if (remaining_size.cx > max_size.cx)
rc.right -= remaining_size.cx - max_size.cx;
Move(rc);
widget.Move(buttons.LeftLayout());
return;
}
/* see if buttons fit at the bottom */
PixelRect rc = parent_rc;
if (max_size.cx < parent_size.cx)
rc.right = rc.left + max_size.cx;
PixelRect remaining = buttons.BottomLayout(rc);
PixelSize remaining_size = remaining.GetSize();
if (remaining_size.cy > max_size.cy)
rc.bottom -= remaining_size.cy - max_size.cy;
Move(rc);
widget.Move(buttons.BottomLayout());
}
bool
WndForm::OnMouseMove(PixelScalar x, PixelScalar y, unsigned keys)
{
if (ContainerWindow::OnMouseMove(x, y, keys))
return true;
if (dragging) {
const PixelRect position = GetPosition();
const int dx = position.left + x - last_drag.x;
const int dy = position.top + y - last_drag.y;
last_drag.x = position.left + x;
last_drag.y = position.top + y;
PixelRect parent = GetParentClientRect();
parent.Grow(-client_rect.top);
PixelRect new_position = position;
new_position.Offset(dx, dy);
if (new_position.right < parent.left)
new_position.Offset(parent.left - new_position.right, 0);
if (new_position.left > parent.right)
new_position.Offset(parent.right - new_position.left, 0);
if (new_position.top > parent.bottom)
new_position.Offset(0, parent.bottom - new_position.top);
if (new_position.top < 0)
new_position.Offset(0, -new_position.top);
#ifdef USE_MEMORY_CANVAS
/* the RasterCanvas class doesn't clip negative window positions
properly, therefore we avoid this problem at this stage */
if (new_position.left < 0)
new_position.left = 0;
if (new_position.top < 0)
new_position.top = 0;
#endif
Move(new_position.left, new_position.top);
return true;
}
return false;
}
bool
WndForm::OnMouseMove(PixelScalar x, PixelScalar y, unsigned keys)
{
if (ContainerWindow::OnMouseMove(x, y, keys))
return true;
if (dragging) {
const PixelRect position = GetPosition();
const int dx = position.left + x - last_drag.x;
const int dy = position.top + y - last_drag.y;
last_drag.x = position.left + x;
last_drag.y = position.top + y;
PixelRect parent = GetParentClientRect();
parent.Grow(-client_rect.top);
PixelRect new_position = position;
new_position.Offset(dx, dy);
if (new_position.right < parent.left)
new_position.Offset(parent.left - new_position.right, 0);
if (new_position.left > parent.right)
new_position.Offset(parent.right - new_position.left, 0);
if (new_position.top > parent.bottom)
new_position.Offset(0, parent.bottom - new_position.top);
if (new_position.top < 0)
new_position.Offset(0, -new_position.top);
Move(new_position.left, new_position.top);
return true;
}
return false;
}
