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Selectable: added ImGuiSelectableFlags_Highlight flag to highlight items independently from the hovered state. (#7820)

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Demo: Make the Widget/List boxes show how to use forced highlighting.
This commit is contained in:
Rémi Hérilier 2024-07-26 13:19:22 +02:00 committed by ocornut
parent 96460a8a12
commit c7b9256097
4 changed files with 28 additions and 15 deletions
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2
docs/CHANGELOG.txt
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@ -147,6 +147,8 @@ Other changes:
- Nav: fixed clicking window decorations (e.g. resize borders) from losing focused item when
within a child window using ImGuiChildFlags_NavFlattened.
- InputText: added '\' and '/' as word seperator. (#7824, #7704) [@reduf]
- Selectable: added ImGuiSelectableFlags_Highlight flag to highlight items independently from
the hovered state. (#7820) [@rerilier]
- Clipper: added SeekCursorForItem() function. When using ImGuiListClipper::Begin(INT_MAX) you can
can use the clipper without knowing the amount of items beforehand. (#1311)
In this situation, call ImGuiListClipper::SeekCursorForItem(items_count) as the end of your iteration

1
imgui.h
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@ -1228,6 +1228,7 @@ enum ImGuiSelectableFlags_
ImGuiSelectableFlags_AllowDoubleClick = 1 << 2, // Generate press events on double clicks too
ImGuiSelectableFlags_Disabled = 1 << 3, // Cannot be selected, display grayed out text
ImGuiSelectableFlags_AllowOverlap = 1 << 4, // (WIP) Hit testing to allow subsequent widgets to overlap this one
ImGuiSelectableFlags_Highlight = 1 << 5, // Make the item be displayed as if it is hovered
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
ImGuiSelectableFlags_DontClosePopups = ImGuiSelectableFlags_NoAutoClosePopups, // Renamed in 1.91.0

33
imgui_demo.cpp
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@ -1357,18 +1357,18 @@ static void ShowDemoWindowWidgets(DemoWindowData* demo_data)
// (your selection data could be an index, a pointer to the object, an id for the object, a flag intrusively
// stored in the object itself, etc.)
const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
static int item_current_idx = 0; // Here we store our selection data as an index.
static int item_selected_idx = 0; // Here we store our selection data as an index.
// Pass in the preview value visible before opening the combo (it could technically be different contents or not pulled from items[])
const char* combo_preview_value = items[item_current_idx];
const char* combo_preview_value = items[item_selected_idx];
if (ImGui::BeginCombo("combo 1", combo_preview_value, flags))
{
for (int n = 0; n < IM_ARRAYSIZE(items); n++)
{
const bool is_selected = (item_current_idx == n);
const bool is_selected = (item_selected_idx == n);
if (ImGui::Selectable(items[n], is_selected))
item_current_idx = n;
item_selected_idx = n;
// Set the initial focus when opening the combo (scrolling + keyboard navigation focus)
if (is_selected)
@ -1410,14 +1410,22 @@ static void ShowDemoWindowWidgets(DemoWindowData* demo_data)
// (your selection data could be an index, a pointer to the object, an id for the object, a flag intrusively
// stored in the object itself, etc.)
const char* items[] = { "AAAA", "BBBB", "CCCC", "DDDD", "EEEE", "FFFF", "GGGG", "HHHH", "IIII", "JJJJ", "KKKK", "LLLLLLL", "MMMM", "OOOOOOO" };
static int item_current_idx = 0; // Here we store our selection data as an index.
static int item_selected_idx = 0; // Here we store our selected data as an index.
static bool item_highlight = false;
int item_highlighted_idx = -1; // Here we store our highlighted data as an index.
ImGui::Checkbox("Highlight hovered item in second listbox", &item_highlight);
if (ImGui::BeginListBox("listbox 1"))
{
for (int n = 0; n < IM_ARRAYSIZE(items); n++)
{
const bool is_selected = (item_current_idx == n);
const bool is_selected = (item_selected_idx == n);
if (ImGui::Selectable(items[n], is_selected))
item_current_idx = n;
item_selected_idx = n;
if (item_highlight && ImGui::IsItemHovered())
item_highlighted_idx = n;
// Set the initial focus when opening the combo (scrolling + keyboard navigation focus)
if (is_selected)
@ -1433,9 +1441,10 @@ static void ShowDemoWindowWidgets(DemoWindowData* demo_data)
{
for (int n = 0; n < IM_ARRAYSIZE(items); n++)
{
const bool is_selected = (item_current_idx == n);
if (ImGui::Selectable(items[n], is_selected))
item_current_idx = n;
bool is_selected = (item_selected_idx == n);
ImGuiSelectableFlags flags = (item_highlighted_idx == n) ? ImGuiSelectableFlags_Highlight : 0;
if (ImGui::Selectable(items[n], is_selected, flags))
item_selected_idx = n;
// Set the initial focus when opening the combo (scrolling + keyboard navigation focus)
if (is_selected)
@ -1482,8 +1491,8 @@ static void ShowDemoWindowWidgets(DemoWindowData* demo_data)
ImGui::TreePop();
}
IMGUI_DEMO_MARKER("Widgets/Selectables/In columns");
if (ImGui::TreeNode("In columns"))
IMGUI_DEMO_MARKER("Widgets/Selectables/In Tables");
if (ImGui::TreeNode("In Tables"))
{
static bool selected[10] = {};

7
imgui_widgets.cpp
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@ -6894,14 +6894,15 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
// Render
if (is_visible)
{
if (hovered || selected)
const bool highlighted = hovered || (flags & ImGuiSelectableFlags_Highlight);
if (highlighted || selected)
{
// FIXME-MULTISELECT: Styling: Color for 'selected' elements? ImGuiCol_HeaderSelected
ImU32 col;
if (selected && !hovered)
if (selected && !highlighted)
col = GetColorU32(ImLerp(GetStyleColorVec4(ImGuiCol_Header), GetStyleColorVec4(ImGuiCol_HeaderHovered), 0.5f));
else
col = GetColorU32((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
col = GetColorU32((held && highlighted) ? ImGuiCol_HeaderActive : highlighted ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
}
if (g.NavId == id)