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Expose BeginDisabled()/EndDisabled() in public API. Add to demo. (#211)

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This commit is contained in:
ocornut
2021-07-19 19:21:18 +02:00
parent cb00972b87
commit c543d93af1
6 changed files with 68 additions and 33 deletions
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32
imgui_demo.cpp
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@ -533,6 +533,10 @@ static void ShowDemoWindowWidgets()
if (!ImGui::CollapsingHeader("Widgets"))
return;
static bool disable_all = false; // The Checkbox for that is inside the "Disabled" section at the bottom
if (disable_all)
ImGui::BeginDisabled();
if (ImGui::TreeNode("Basic"))
{
static int clicked = 0;
@ -2181,7 +2185,7 @@ static void ShowDemoWindowWidgets()
ImGui::TreePop();
}
if (ImGui::TreeNode("Querying Status (Edited/Active/Focused/Hovered etc.)"))
if (ImGui::TreeNode("Querying Status (Edited/Active/Hovered etc.)"))
{
// Select an item type
const char* item_names[] =
@ -2189,16 +2193,20 @@ static void ShowDemoWindowWidgets()
"Text", "Button", "Button (w/ repeat)", "Checkbox", "SliderFloat", "InputText", "InputFloat",
"InputFloat3", "ColorEdit4", "Selectable", "MenuItem", "TreeNode", "TreeNode (w/ double-click)", "Combo", "ListBox"
};
static int item_type = 1;
static int item_type = 4;
static bool item_disabled = false;
ImGui::Combo("Item Type", &item_type, item_names, IM_ARRAYSIZE(item_names), IM_ARRAYSIZE(item_names));
ImGui::SameLine();
HelpMarker("Testing how various types of items are interacting with the IsItemXXX functions. Note that the bool return value of most ImGui function is generally equivalent to calling ImGui::IsItemHovered().");
ImGui::Checkbox("Item Disabled", &item_disabled);
// Submit selected item item so we can query their status in the code following it.
bool ret = false;
static bool b = false;
static float col4f[4] = { 1.0f, 0.5, 0.0f, 1.0f };
static char str[16] = {};
if (item_disabled)
ImGui::BeginDisabled(true);
if (item_type == 0) { ImGui::Text("ITEM: Text"); } // Testing text items with no identifier/interaction
if (item_type == 1) { ret = ImGui::Button("ITEM: Button"); } // Testing button
if (item_type == 2) { ImGui::PushButtonRepeat(true); ret = ImGui::Button("ITEM: Button"); ImGui::PopButtonRepeat(); } // Testing button (with repeater)
@ -2226,6 +2234,7 @@ static void ShowDemoWindowWidgets()
"IsItemHovered(_AllowWhenBlockedByPopup) = %d\n"
"IsItemHovered(_AllowWhenBlockedByActiveItem) = %d\n"
"IsItemHovered(_AllowWhenOverlapped) = %d\n"
"IsItemHovered(_AllowWhenDisabled) = %d\n"
"IsItemHovered(_RectOnly) = %d\n"
"IsItemActive() = %d\n"
"IsItemEdited() = %d\n"
@ -2244,6 +2253,7 @@ static void ShowDemoWindowWidgets()
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByPopup),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenBlockedByActiveItem),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenOverlapped),
ImGui::IsItemHovered(ImGuiHoveredFlags_AllowWhenDisabled),
ImGui::IsItemHovered(ImGuiHoveredFlags_RectOnly),
ImGui::IsItemActive(),
ImGui::IsItemEdited(),
@ -2258,6 +2268,9 @@ static void ShowDemoWindowWidgets()
ImGui::GetItemRectSize().x, ImGui::GetItemRectSize().y
);
if (item_disabled)
ImGui::EndDisabled();
static bool embed_all_inside_a_child_window = false;
ImGui::Checkbox("Embed everything inside a child window (for additional testing)", &embed_all_inside_a_child_window);
if (embed_all_inside_a_child_window)
@ -2327,6 +2340,18 @@ static void ShowDemoWindowWidgets()
ImGui::TreePop();
}
// Demonstrate BeginDisabled/EndDisabled using a checkbox located at the bottom of the section (which is a bit odd:
// logically we'd have this checkbox at the top of the section, but we don't want this feature to steal that space)
if (disable_all)
ImGui::EndDisabled();
if (ImGui::TreeNode("Disable block"))
{
ImGui::Checkbox("Disable entire section above", &disable_all);
ImGui::SameLine(); HelpMarker("Demonstrate using BeginDisabled()/EndDisabled() across this section.");
ImGui::TreePop();
}
}
static void ShowDemoWindowLayout()
@ -2396,7 +2421,7 @@ static void ShowDemoWindowLayout()
// You can also call SetNextWindowPos() to position the child window. The parent window will effectively
// layout from this position.
// - Using ImGui::GetItemRectMin/Max() to query the "item" state (because the child window is an item from
// the POV of the parent window). See 'Demo->Querying Status (Active/Focused/Hovered etc.)' for details.
// the POV of the parent window). See 'Demo->Querying Status (Edited/Active/Hovered etc.)' for details.
{
static int offset_x = 0;
ImGui::SetNextItemWidth(ImGui::GetFontSize() * 8);
@ -6041,6 +6066,7 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
HelpMarker("When drawing circle primitives with \"num_segments == 0\" tesselation will be calculated automatically.");
ImGui::DragFloat("Global Alpha", &style.Alpha, 0.005f, 0.20f, 1.0f, "%.2f"); // Not exposing zero here so user doesn't "lose" the UI (zero alpha clips all widgets). But application code could have a toggle to switch between zero and non-zero.
ImGui::DragFloat("Disabled Alpha", &style.DisabledAlpha, 0.005f, 0.0f, 1.0f, "%.2f"); ImGui::SameLine(); HelpMarker("Additional alpha multiplier for disabled items (multiply over current value of Alpha).");
ImGui::PopItemWidth();
ImGui::EndTabItem();