mirror/imgui
1
0
Fork 0
mirror of https://github.com/ocornut/imgui.git synced 2026-01-11 00:04:24 +00:00
Code Activity

MultiSelect: ImGuiSelectionBasicStorage: added GetNextSelectedItem() to abstract selection storage from user. Amend Assets Browser demo to handle drag and drop correctly.

Browse source
This commit is contained in:
ocornut 2024-06-11 17:14:00 +02:00
parent c3d7aa252b
commit e1fd25051e
3 changed files with 61 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

31
imgui_demo.cpp
View file

@ -3441,24 +3441,24 @@ static void ShowDemoWindowMultiSelect()
// Drag and Drop
if (use_drag_drop && ImGui::BeginDragDropSource())
{
// Consider payload to be full selection OR single unselected item.
// Create payload with full selection OR single unselected item.
// (the later is only possible when using ImGuiMultiSelectFlags_SelectOnClickRelease)
if (ImGui::GetDragDropPayload() == NULL)
{
ImVector<int> payload_items;
void* it = NULL;
if (!item_is_selected)
payload_items.push_back(item_id);
else
for (const ImGuiStoragePair& pair : selection.Storage.Data)
if (pair.val_i)
payload_items.push_back((int)pair.key);
while (int id = (int)selection.GetNextSelectedItem(&it))
payload_items.push_back(id);
ImGui::SetDragDropPayload("MULTISELECT_DEMO_ITEMS", payload_items.Data, (size_t)payload_items.size_in_bytes());
}
// Display payload content in tooltip
const ImGuiPayload* payload = ImGui::GetDragDropPayload();
const int* payload_items = (int*)payload->Data;
const int payload_count = (int)payload->DataSize / (int)sizeof(payload_items[0]);
const int payload_count = (int)payload->DataSize / (int)sizeof(int);
if (payload_count == 1)
ImGui::Text("Object %05d: %s", payload_items[0], ExampleNames[payload_items[0] % IM_ARRAYSIZE(ExampleNames)]);
else
@ -9896,13 +9896,26 @@ struct ExampleAssetsBrowser
// Drag and drop
if (ImGui::BeginDragDropSource())
{
// Consider payload to be full selection OR single unselected item
// Create payload with full selection OR single unselected item.
// (the later is only possible when using ImGuiMultiSelectFlags_SelectOnClickRelease)
int payload_size = item_is_selected ? Selection.Size : 1;
if (ImGui::GetDragDropPayload() == NULL)
ImGui::SetDragDropPayload("ASSETS_BROWSER_ITEMS", "Dummy", 5); // Dummy payload
{
ImVector<ImGuiID> payload_items;
void* it = NULL;
if (!item_is_selected)
payload_items.push_back(item_data->ID);
else
while (ImGuiID id = Selection.GetNextSelectedItem(&it))
payload_items.push_back(id);
ImGui::SetDragDropPayload("ASSETS_BROWSER_ITEMS", payload_items.Data, (size_t)payload_items.size_in_bytes());
}
// Display payload content in tooltip, by extracting it from the payload data
// (we could read from selection, but it is more correct and reusable to read from payload)
const ImGuiPayload* payload = ImGui::GetDragDropPayload();
const int payload_count = (int)payload->DataSize / (int)sizeof(ImGuiID);
ImGui::Text("%d assets", payload_count);
ImGui::Text("%d assets", payload_size);
ImGui::EndDragDropSource();
}