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(Breaking) Internals: added ImGuiItemFlags param to ItemHoverable(), so it can be called from ButtonBehavior() not following an ItemAdd().

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This also allow moving AllowOverlap logic from ButtonBehavior() to ItemHoverable(), allowing other widgets to honor it. (#6512, #3909, #517)
features/potocpav-newer-lines-2
ocornut ago%!(EXTRA string=2 years)
parent 10c7709f30
commit 4dee919bc0
4 changed files with 22 additions and 21 deletions
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  1. 6
      imgui.cpp
  2. 2
      imgui_internal.h
  3. 2
      imgui_tables.cpp
  4. 33
      imgui_widgets.cpp

6
imgui.cpp
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@ -4038,7 +4038,8 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
}
// Internal facing ItemHoverable() used when submitting widgets. Differs slightly from IsItemHovered().
bool ImGui::ItemHoverable(const ImRect& bb, ImGuiID id)
// (this does not rely on LastItemData it can be called from a ButtonBehavior() call not following an ItemAdd() call)
bool ImGui::ItemHoverable(const ImRect& bb, ImGuiID id, ImGuiItemFlags item_flags)
{
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
@ -4053,7 +4054,6 @@ bool ImGui::ItemHoverable(const ImRect& bb, ImGuiID id)
return false;
// Done with rectangle culling so we can perform heavier checks now.
ImGuiItemFlags item_flags = (g.LastItemData.ID == id ? g.LastItemData.InFlags : g.CurrentItemFlags);
if (!(item_flags & ImGuiItemFlags_NoWindowHoverableCheck) && !IsWindowContentHoverable(window, ImGuiHoveredFlags_None))
{
g.HoveredIdDisabled = true;
@ -12360,7 +12360,7 @@ bool ImGui::BeginDragDropSource(ImGuiDragDropFlags flags)
// Rely on keeping other window->LastItemXXX fields intact.
source_id = g.LastItemData.ID = window->GetIDFromRectangle(g.LastItemData.Rect);
KeepAliveID(source_id);
bool is_hovered = ItemHoverable(g.LastItemData.Rect, source_id);
bool is_hovered = ItemHoverable(g.LastItemData.Rect, source_id, g.LastItemData.InFlags);
if (is_hovered && g.IO.MouseClicked[mouse_button])
{
SetActiveID(source_id, window);

2
imgui_internal.h
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@ -2876,7 +2876,7 @@ namespace ImGui
IMGUI_API void ItemSize(const ImVec2& size, float text_baseline_y = -1.0f);
inline void ItemSize(const ImRect& bb, float text_baseline_y = -1.0f) { ItemSize(bb.GetSize(), text_baseline_y); } // FIXME: This is a misleading API since we expect CursorPos to be bb.Min.
IMGUI_API bool ItemAdd(const ImRect& bb, ImGuiID id, const ImRect* nav_bb = NULL, ImGuiItemFlags extra_flags = 0);
IMGUI_API bool ItemHoverable(const ImRect& bb, ImGuiID id);
IMGUI_API bool ItemHoverable(const ImRect& bb, ImGuiID id, ImGuiItemFlags item_flags);
IMGUI_API bool IsWindowContentHoverable(ImGuiWindow* window, ImGuiHoveredFlags flags = 0);
IMGUI_API bool IsClippedEx(const ImRect& bb, ImGuiID id);
IMGUI_API void SetLastItemData(ImGuiID item_id, ImGuiItemFlags in_flags, ImGuiItemStatusFlags status_flags, const ImRect& item_rect);

2
imgui_tables.cpp
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@ -976,7 +976,7 @@ void ImGui::TableUpdateLayout(ImGuiTable* table)
const ImRect mouse_hit_rect(table->OuterRect.Min.x, table->OuterRect.Min.y, table->OuterRect.Max.x, ImMax(table->OuterRect.Max.y, table->OuterRect.Min.y + table_instance->LastOuterHeight));
const ImGuiID backup_active_id = g.ActiveId;
g.ActiveId = 0;
const bool is_hovering_table = ItemHoverable(mouse_hit_rect, 0);
const bool is_hovering_table = ItemHoverable(mouse_hit_rect, 0, ImGuiItemFlags_None);
g.ActiveId = backup_active_id;
// [Part 6] Setup final position, offset, skip/clip states and clipping rectangles, detect hovered column

33
imgui_widgets.cpp
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@ -493,11 +493,12 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
flags |= ImGuiButtonFlags_PressedOnDefault_;
// Default behavior inherited from item flags
const ImGuiItemFlags item_flags = (g.LastItemData.ID == id ? g.LastItemData.InFlags : g.CurrentItemFlags);
if (item_flags & ImGuiItemFlags_ButtonRepeat)
flags |= ImGuiButtonFlags_Repeat;
if (item_flags & ImGuiItemflags_AllowOverlap)
flags |= ImGuiButtonFlags_AllowOverlap;
// Note that _both_ ButtonFlags and ItemFlags are valid sources, so copy one into the item_flags and only check that.
ImGuiItemFlags item_flags = (g.LastItemData.ID == id ? g.LastItemData.InFlags : g.CurrentItemFlags);
if (flags & ImGuiButtonFlags_AllowOverlap)
item_flags |= ImGuiItemflags_AllowOverlap;
if (flags & ImGuiButtonFlags_Repeat)
item_flags |= ImGuiItemFlags_ButtonRepeat;
ImGuiWindow* backup_hovered_window = g.HoveredWindow;
const bool flatten_hovered_children = (flags & ImGuiButtonFlags_FlattenChildren) && g.HoveredWindow && g.HoveredWindow->RootWindow == window;
@ -511,7 +512,7 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
#endif
bool pressed = false;
bool hovered = ItemHoverable(bb, id);
bool hovered = ItemHoverable(bb, id, item_flags);
// Special mode for Drag and Drop where holding button pressed for a long time while dragging another item triggers the button
if (g.DragDropActive && (flags & ImGuiButtonFlags_PressedOnDragDropHold) && !(g.DragDropSourceFlags & ImGuiDragDropFlags_SourceNoHoldToOpenOthers))
@ -531,7 +532,7 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
g.HoveredWindow = backup_hovered_window;
// AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
if (flags & ImGuiButtonFlags_AllowOverlap)
if (item_flags & ImGuiItemflags_AllowOverlap)
{
if (hovered && g.HoveredIdPreviousFrame != id)
hovered = false;
@ -587,7 +588,7 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
{
if (mouse_button_released != -1)
{
const bool has_repeated_at_least_once = (flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[mouse_button_released] >= g.IO.KeyRepeatDelay; // Repeat mode trumps on release behavior
const bool has_repeated_at_least_once = (item_flags & ImGuiItemFlags_ButtonRepeat) && g.IO.MouseDownDurationPrev[mouse_button_released] >= g.IO.KeyRepeatDelay; // Repeat mode trumps on release behavior
if (!has_repeated_at_least_once)
pressed = true;
if (!(flags & ImGuiButtonFlags_NoNavFocus))
@ -598,7 +599,7 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
// 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
// Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
if (g.ActiveId == id && (flags & ImGuiButtonFlags_Repeat))
if (g.ActiveId == id && (item_flags & ImGuiItemFlags_ButtonRepeat))
if (g.IO.MouseDownDuration[g.ActiveIdMouseButton] > 0.0f && IsMouseClicked(g.ActiveIdMouseButton, test_owner_id, ImGuiInputFlags_Repeat))
pressed = true;
}
@ -616,7 +617,7 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
{
bool nav_activated_by_code = (g.NavActivateId == id);
bool nav_activated_by_inputs = (g.NavActivatePressedId == id);
if (!nav_activated_by_inputs && (flags & ImGuiButtonFlags_Repeat))
if (!nav_activated_by_inputs && (item_flags & ImGuiItemFlags_ButtonRepeat))
{
// Avoid pressing multiple keys from triggering excessive amount of repeat events
const ImGuiKeyData* key1 = GetKeyData(ImGuiKey_Space);
@ -663,7 +664,7 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
{
// Report as pressed when releasing the mouse (this is the most common path)
bool is_double_click_release = (flags & ImGuiButtonFlags_PressedOnDoubleClick) && g.IO.MouseReleased[mouse_button] && g.IO.MouseClickedLastCount[mouse_button] == 2;
bool is_repeating_already = (flags & ImGuiButtonFlags_Repeat) && g.IO.MouseDownDurationPrev[mouse_button] >= g.IO.KeyRepeatDelay; // Repeat mode trumps <on release>
bool is_repeating_already = (item_flags & ImGuiItemFlags_ButtonRepeat) && g.IO.MouseDownDurationPrev[mouse_button] >= g.IO.KeyRepeatDelay; // Repeat mode trumps <on release>
bool is_button_avail_or_owned = TestKeyOwner(MouseButtonToKey(mouse_button), test_owner_id);
if (!is_double_click_release && !is_repeating_already && is_button_avail_or_owned)
pressed = true;
@ -2421,7 +2422,7 @@ bool ImGui::DragScalar(const char* label, ImGuiDataType data_type, void* p_data,
if (format == NULL)
format = DataTypeGetInfo(data_type)->PrintFmt;
const bool hovered = ItemHoverable(frame_bb, id);
const bool hovered = ItemHoverable(frame_bb, id, g.LastItemData.InFlags);
bool temp_input_is_active = temp_input_allowed && TempInputIsActive(id);
if (!temp_input_is_active)
{
@ -3014,7 +3015,7 @@ bool ImGui::SliderScalar(const char* label, ImGuiDataType data_type, void* p_dat
if (format == NULL)
format = DataTypeGetInfo(data_type)->PrintFmt;
const bool hovered = ItemHoverable(frame_bb, id);
const bool hovered = ItemHoverable(frame_bb, id, g.LastItemData.InFlags);
bool temp_input_is_active = temp_input_allowed && TempInputIsActive(id);
if (!temp_input_is_active)
{
@ -3181,7 +3182,7 @@ bool ImGui::VSliderScalar(const char* label, const ImVec2& size, ImGuiDataType d
if (format == NULL)
format = DataTypeGetInfo(data_type)->PrintFmt;
const bool hovered = ItemHoverable(frame_bb, id);
const bool hovered = ItemHoverable(frame_bb, id, g.LastItemData.InFlags);
const bool clicked = hovered && IsMouseClicked(0, id);
if (clicked || g.NavActivateId == id)
{
@ -4147,7 +4148,7 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
return false;
item_status_flags = g.LastItemData.StatusFlags;
}
const bool hovered = ItemHoverable(frame_bb, id);
const bool hovered = ItemHoverable(frame_bb, id, g.LastItemData.InFlags);
if (hovered)
g.MouseCursor = ImGuiMouseCursor_TextInput;
@ -6714,7 +6715,7 @@ int ImGui::PlotEx(ImGuiPlotType plot_type, const char* label, float (*values_get
ItemSize(total_bb, style.FramePadding.y);
if (!ItemAdd(total_bb, 0, &frame_bb))
return -1;
const bool hovered = ItemHoverable(frame_bb, id);
const bool hovered = ItemHoverable(frame_bb, id, g.LastItemData.InFlags);
// Determine scale from values if not specified
if (scale_min == FLT_MAX || scale_max == FLT_MAX)

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