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C++: grabbed mouse input

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This commit is contained in:
Olivier Goffart 2020-08-07 15:57:32 +02:00
parent b4684cc1f5
commit 5de801d023
4 changed files with 78 additions and 19 deletions
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51
api/sixtyfps-cpp/include/sixtyfps.h
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@ -28,13 +28,14 @@ extern const internal::ItemVTable FlickableVTable;
// Bring opaque structure in scope
using internal::ComponentVTable;
using internal::ItemTreeNode;
using ItemTreeNode = internal::ItemTreeNode<uint8_t>;
using ComponentRef = VRef<ComponentVTable>;
using ItemVisitorRefMut = VRefMut<internal::ItemVisitorVTable>;
using internal::EasingCurve;
using internal::TextHorizontalAlignment;
using internal::TextVerticalAlignment;
using internal::WindowProperties;
using internal::Slice;
struct ComponentWindow
{
@ -64,21 +65,54 @@ using internal::Rectangle;
using internal::Text;
using internal::TouchArea;
constexpr inline ItemTreeNode<uint8_t> make_item_node(std::uintptr_t offset,
constexpr inline ItemTreeNode make_item_node(std::uintptr_t offset,
const internal::ItemVTable *vtable,
uint32_t child_count, uint32_t child_index)
{
return ItemTreeNode<uint8_t> { ItemTreeNode<uint8_t>::Item_Body {
ItemTreeNode<uint8_t>::Tag::Item, { vtable, offset }, child_count, child_index } };
return ItemTreeNode { ItemTreeNode::Item_Body {
ItemTreeNode::Tag::Item, { vtable, offset }, child_count, child_index } };
}
constexpr inline ItemTreeNode<uint8_t> make_dyn_node(std::uintptr_t offset)
constexpr inline ItemTreeNode make_dyn_node(std::uintptr_t offset)
{
return ItemTreeNode<uint8_t> { ItemTreeNode<uint8_t>::DynamicTree_Body {
ItemTreeNode<uint8_t>::Tag::DynamicTree, offset } };
return ItemTreeNode { ItemTreeNode::DynamicTree_Body {
ItemTreeNode::Tag::DynamicTree, offset } };
}
using internal::sixtyfps_visit_item_tree;
using internal::MouseEvent;
using internal::InputEventResult;
template<typename HandleDynamic>
inline InputEventResult process_input_event(
ComponentRef component, int64_t &mouse_grabber, MouseEvent mouse_event,
Slice<ItemTreeNode> tree, HandleDynamic handle_dynamic)
{
if (mouse_grabber != -1) {
auto item_index = mouse_grabber & 0xffffffff;
auto rep_index = mouse_grabber >> 32;
auto offset = internal::sixtyfps_item_offset(component, tree, item_index);
mouse_event.pos = { mouse_event.pos.x - offset.x , mouse_event.pos.y - offset.y };
const auto &item_node = tree.ptr[item_index];
InputEventResult result = InputEventResult::EventIgnored;
switch (item_node.tag) {
case ItemTreeNode::Tag::Item:
result = item_node.item.item.vtable->input_event( {
item_node.item.item.vtable,
reinterpret_cast<char*>(component.instance) + item_node.item.item.offset,
} , mouse_event);
break;
case ItemTreeNode::Tag::DynamicTree:
result = handle_dynamic(item_node.dynamic_tree.index, rep_index, &mouse_event);
break;
}
if (result != InputEventResult::GrabMouse) {
mouse_grabber = -1;
}
return result;
} else {
return internal::sixtyfps_process_ungrabbed_mouse_event(component, mouse_event, &mouse_grabber);
}
}
// layouts:
using internal::grid_layout_info;
@ -86,7 +120,6 @@ using internal::GridLayoutCellData;
using internal::GridLayoutData;
using internal::PathLayoutData;
using internal::PathLayoutItemData;
using internal::Slice;
using internal::solve_grid_layout;
using internal::solve_path_layout;
@ -147,7 +180,7 @@ struct Repeater
for (auto i = 0; i < data.size(); ++i) {
const auto &x = data.at(i);
VRef<ComponentVTable> ref { &C::component_type, x.get() };
if (ref.vtable->visit_children_item(ref, -1, visitor) == -1) {
if (ref.vtable->visit_children_item(ref, -1, visitor) != -1) {
return i;
}
}