/**
* Based on (heavily changed)
* rct2: 0x006E9E0E, 0x006E9ED0
*/
static void input_scroll_drag_continue(int x, int y, rct_window* w)
{
rct_widgetindex widgetIndex = _dragWidget.widget_index;
uint8 scrollIndex = _dragScrollIndex;
rct_widget* widget = &w->widgets[widgetIndex];
rct_scroll* scroll = &w->scrolls[scrollIndex];
int dx, dy;
dx = x - gInputDragLastX;
dy = y - gInputDragLastY;
if (scroll->flags & HSCROLLBAR_VISIBLE) {
sint16 size = widget->right - widget->left - 1;
if (scroll->flags & VSCROLLBAR_VISIBLE)
size -= 11;
size = max(0, scroll->h_right - size);
scroll->h_left = min(max(0, scroll->h_left + dx), size);
}
if (scroll->flags & VSCROLLBAR_VISIBLE) {
sint16 size = widget->bottom - widget->top - 1;
if (scroll->flags & HSCROLLBAR_VISIBLE)
size -= 11;
size = max(0, scroll->v_bottom - size);
scroll->v_top = min(max(0, scroll->v_top + dy), size);
}
widget_scroll_update_thumbs(w, widgetIndex);
window_invalidate_by_number(w->classification, w->number);
platform_set_cursor_position(gInputDragLastX, gInputDragLastY);
}
static void input_viewport_drag_continue()
{
sint32 dx, dy, newDragX, newDragY;
rct_window *w;
rct_viewport *viewport;
platform_get_cursor_position(&newDragX, &newDragY);
dx = newDragX - gInputDragLastX;
dy = newDragY - gInputDragLastY;
w = window_find_by_number(_dragWidget.window_classification, _dragWidget.window_number);
// #3294: Window can be closed during a drag session, so just finish
// the session if the window no longer exists
if (w == NULL) {
input_viewport_drag_end();
return;
}
viewport = w->viewport;
_ticksSinceDragStart += gTicksSinceLastUpdate;
if (viewport == NULL) {
platform_show_cursor();
_inputState = INPUT_STATE_RESET;
} else if (dx != 0 || dy != 0) {
if (!(w->flags & WF_NO_SCROLLING)) {
// User dragged a scrollable viewport
// If the drag time is less than 500 the "drag" is usually interpreted as a right click.
// As the user moved the mouse, don't interpret it as right click in any case.
_ticksSinceDragStart = 1000;
dx *= 1 << (viewport->zoom + 1);
dy *= 1 << (viewport->zoom + 1);
if (gConfigGeneral.invert_viewport_drag){
w->saved_view_x -= dx;
w->saved_view_y -= dy;
} else {
w->saved_view_x += dx;
w->saved_view_y += dy;
}
}
}
platform_set_cursor_position(gInputDragLastX, gInputDragLastY);
}
