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Drag and Drop: Added support for drag and drop hold-long-to-open for CollapsingHeader() and TreeNode(). Open only!

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This commit is contained in:
omar 2017-10-30 00:03:04 +01:00
parent 1d7d8f8574
commit a810619555
2 changed files with 15 additions and 1 deletions
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13
imgui.cpp
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@ -5841,6 +5841,16 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
bool pressed = false;
bool hovered = ItemHoverable(bb, id);
// Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
if ((flags & ImGuiButtonFlags_PressedOnDragDropHold) && g.DragDropActive && !hovered)
if (IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
{
hovered = true;
SetHoveredID(id);
if (CalcTypematicPressedRepeatAmount(g.HoveredIdTimer + 0.0001f, g.HoveredIdTimer + 0.0001f - g.IO.DeltaTime, 0.01f, 0.70f)) // FIXME: Our formula for CalcTypematicPressedRepeatAmount() is fishy
pressed = true;
}
if ((flags & ImGuiButtonFlags_FlattenChilds) && g.HoveredRootWindow == window)
g.HoveredWindow = backup_hovered_window;
@ -6271,6 +6281,7 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
// - OpenOnArrow .................... single-click on arrow to open
// - OpenOnDoubleClick|OpenOnArrow .. single-click on arrow or double-click anywhere to open
ImGuiButtonFlags button_flags = ImGuiButtonFlags_NoKeyModifiers | ((flags & ImGuiTreeNodeFlags_AllowOverlapMode) ? ImGuiButtonFlags_AllowOverlapMode : 0);
button_flags |= ImGuiButtonFlags_PressedOnDragDropHold;
if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
button_flags |= ImGuiButtonFlags_PressedOnDoubleClick | ((flags & ImGuiTreeNodeFlags_OpenOnArrow) ? ImGuiButtonFlags_PressedOnClickRelease : 0);
bool hovered, held, pressed = ButtonBehavior(interact_bb, id, &hovered, &held, button_flags);
@ -6281,6 +6292,8 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
toggled |= IsMouseHoveringRect(interact_bb.Min, ImVec2(interact_bb.Min.x + text_offset_x, interact_bb.Max.y));
if (flags & ImGuiTreeNodeFlags_OpenOnDoubleClick)
toggled |= g.IO.MouseDoubleClicked[0];
if (g.DragDropActive && is_open) // We don't nodes to be highlighted when holding ever after the node has been opened, but don't close them!
toggled = false;
if (toggled)
{
is_open = !is_open;

3
imgui_internal.h
View File

@ -183,7 +183,8 @@ enum ImGuiButtonFlags_
ImGuiButtonFlags_AlignTextBaseLine = 1 << 8, // vertically align button to match text baseline (ButtonEx() only)
ImGuiButtonFlags_NoKeyModifiers = 1 << 9, // disable interaction if a key modifier is held
ImGuiButtonFlags_AllowOverlapMode = 1 << 10, // require previous frame HoveredId to either match id or be null before being usable
ImGuiButtonFlags_NoHoldingActiveID = 1 << 11 // don't set ActiveId while holding the mouse (ImGuiButtonFlags_PressedOnClick only)
ImGuiButtonFlags_NoHoldingActiveID = 1 << 11, // don't set ActiveId while holding the mouse (ImGuiButtonFlags_PressedOnClick only)
ImGuiButtonFlags_PressedOnDragDropHold = 1 << 12 // press when held into while we are drag and dropping another item
};
enum ImGuiSliderFlags_