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WIP Menus: Added Enabled/Disabled option for MenuItem() (#126)

pull/236/head
ocornut 10 years ago
parent
485832fe06
commit
89d1340225
2 changed files with 22 additions and 11 deletions
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  1. 29
      imgui.cpp
  2. 4
      imgui.h

29
imgui.cpp
View File

@ -948,7 +948,8 @@ enum ImGuiButtonFlags_
{
ImGuiButtonFlags_Repeat = (1 << 0),
ImGuiButtonFlags_PressedOnClick = (1 << 1),
ImGuiButtonFlags_FlattenChilds = (1 << 2)
ImGuiButtonFlags_FlattenChilds = (1 << 2),
ImGuiButtonFlags_Disabled = (1 << 3)
};
struct ImGuiColMod // Color modifier, backup of modified data so we can restore it
@ -4741,6 +4742,14 @@ static bool ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
ImGuiState& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow();
if (flags & ImGuiButtonFlags_Disabled)
{
if (out_hovered) *out_hovered = false;
if (out_held) *out_held = false;
if (g.ActiveId == id) SetActiveId(0);
return false;
}
bool pressed = false;
const bool hovered = IsHovered(bb, id, (flags & ImGuiButtonFlags_FlattenChilds) != 0);
if (hovered)
@ -7249,7 +7258,7 @@ bool ImGui::Combo(const char* label, int* current_item, bool (*items_getter)(voi
return value_changed;
}
static bool SelectableEx(const char* label, bool selected, const ImVec2& size_arg, const ImVec2 size_draw_arg, bool menu_item = false)
static bool SelectableEx(const char* label, bool selected, const ImVec2& size_arg, const ImVec2 size_draw_arg, bool menu_item = false, bool enabled = true)
{
ImGuiState& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow();
@ -7285,7 +7294,7 @@ static bool SelectableEx(const char* label, bool selected, const ImVec2& size_ar
return false;
bool hovered, held;
bool pressed = ButtonBehavior(bb_with_spacing, id, &hovered, &held, true, menu_item ? ImGuiButtonFlags_PressedOnClick : 0);
bool pressed = ButtonBehavior(bb_with_spacing, id, &hovered, &held, true, (menu_item ? ImGuiButtonFlags_PressedOnClick : 0) | (enabled ? 0 : ImGuiButtonFlags_Disabled));
// Render
if (hovered || selected)
@ -7293,7 +7302,9 @@ static bool SelectableEx(const char* label, bool selected, const ImVec2& size_ar
const ImU32 col = window->Color((held && hovered) ? ImGuiCol_HeaderActive : hovered ? ImGuiCol_HeaderHovered : ImGuiCol_Header);
RenderFrame(bb_with_spacing.Min, bb_with_spacing.Max, col, false, style.FrameRounding);
}
if (!enabled) ImGui::PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
RenderTextClipped(bb.Min, label, NULL, &label_size, bb_with_spacing.Max);
if (!enabled) ImGui::PopStyleColor();
// Automatically close popups
if (pressed && (window->Flags & ImGuiWindowFlags_ChildMenu))
@ -7415,7 +7426,7 @@ bool ImGui::ListBox(const char* label, int* current_item, bool (*items_getter)(v
return value_changed;
}
bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected)
bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected, bool enabled)
{
ImGuiState& g = *GImGui;
ImGuiWindow* window = GetCurrentWindow();
@ -7428,7 +7439,7 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected)
float w = window->MenuColumns.DeclColumns(label_size.x, shortcut_size.x, (float)(int)(g.FontSize * 1.20f)); // Feedback for next frame
float extra_w = ImMax(0.0f, window->Pos.x + ImGui::GetContentRegionMax().x - pos.x - w);
bool pressed = SelectableEx(label, false, ImVec2(w, 0.0f), ImVec2(0.0f, 0.0f), true);
bool pressed = SelectableEx(label, false, ImVec2(w, 0.0f), ImVec2(0.0f, 0.0f), true, enabled);
if (shortcut_size.x > 0.0f)
{
ImGui::PushStyleColor(ImGuiCol_Text, g.Style.Colors[ImGuiCol_TextDisabled]);
@ -7442,9 +7453,9 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool selected)
return pressed;
}
bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected)
bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled)
{
if (ImGui::MenuItem(label, shortcut, p_selected ? *p_selected : false))
if (ImGui::MenuItem(label, shortcut, p_selected ? *p_selected : false, enabled))
{
if (p_selected)
*p_selected = !*p_selected;
@ -11257,7 +11268,7 @@ static void ShowExampleAppMainMenuBar()
if (ImGui::BeginMenu("Edit"))
{
if (ImGui::MenuItem("Undo", "CTRL+Z")) {}
if (ImGui::MenuItem("Redo", "CTRL+Y")) {}
if (ImGui::MenuItem("Redo", "CTRL+Y", false, false)) {} // Disabled item
ImGui::Separator();
if (ImGui::MenuItem("Cut", "CTRL+X")) {}
if (ImGui::MenuItem("Copy", "CTRL+C")) {}
@ -11270,7 +11281,7 @@ static void ShowExampleAppMainMenuBar()
static void ShowExampleMenuFile()
{
ImGui::TextColored(ImGui::GetStyle().Colors[ImGuiCol_TextDisabled], "(dummy menu)");
ImGui::MenuItem("(dummy menu)", NULL, false, false);
ImGui::MenuItem("New");
ImGui::MenuItem("Open", "Ctrl+O");
if (ImGui::BeginMenu("Open Recent"))

4
imgui.h
View File

@ -306,8 +306,8 @@ namespace ImGui
IMGUI_API void EndMenuBar();
IMGUI_API bool BeginMenu(const char* label);
IMGUI_API void EndMenu();
IMGUI_API bool MenuItem(const char* label, const char* shortcut = NULL, bool selected = false); // bool enabled = true
IMGUI_API bool MenuItem(const char* label, const char* shortcut, bool* p_selected); // bool enabled = true
IMGUI_API bool MenuItem(const char* label, const char* shortcut = NULL, bool selected = false, bool enabled = true);
IMGUI_API bool MenuItem(const char* label, const char* shortcut, bool* p_selected, bool enabled = true);
// Widgets: Value() Helpers. Output single value in "name: value" format (tip: freely declare your own within the ImGui namespace!)
IMGUI_API void Value(const char* prefix, bool b);

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