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WIP Menus: menu bars. Still inconsistency with hovering scheme. Will probably follow what Windows does. (#126).

This commit is contained in:
ocornut 2015-05-17 17:13:45 +01:00
parent e0594340ff
commit f2b738648f
2 changed files with 87 additions and 13 deletions
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86
imgui.cpp
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@ -588,6 +588,7 @@ ImGuiStyle::ImGuiStyle()
Colors[ImGuiCol_FrameBgActive] = ImVec4(0.90f, 0.65f, 0.65f, 0.45f);
Colors[ImGuiCol_TitleBg] = ImVec4(0.50f, 0.50f, 1.00f, 0.45f);
Colors[ImGuiCol_TitleBgCollapsed] = ImVec4(0.40f, 0.40f, 0.80f, 0.20f);
Colors[ImGuiCol_MenuBarBg] = ImVec4(0.35f, 0.35f, 0.45f, 0.55f);
Colors[ImGuiCol_ScrollbarBg] = ImVec4(0.40f, 0.40f, 0.80f, 0.15f);
Colors[ImGuiCol_ScrollbarGrab] = ImVec4(0.40f, 0.40f, 0.80f, 0.30f);
Colors[ImGuiCol_ScrollbarGrabHovered] = ImVec4(0.40f, 0.40f, 0.80f, 0.40f);
@ -1052,6 +1053,8 @@ struct ImGuiDrawContext
ImRect LastItemRect;
bool LastItemHoveredAndUsable;
bool LastItemHoveredRect;
bool MenuBarAppending;
float MenuBarOffsetX;
ImVector<ImGuiWindow*> ChildWindows;
ImVector<bool> AllowKeyboardFocus;
ImVector<float> ItemWidth; // 0.0: default, >0.0: width in pixels, <0.0: align xx pixels to the right of window
@ -1082,6 +1085,8 @@ struct ImGuiDrawContext
LastItemID = 0;
LastItemRect = ImRect(0.0f,0.0f,0.0f,0.0f);
LastItemHoveredAndUsable = LastItemHoveredRect = false;
MenuBarAppending = false;
MenuBarOffsetX = 0.0f;
ColorEditMode = ImGuiColorEditMode_RGB;
StateStorage = NULL;
memset(StackSizesBackup, 0, sizeof(StackSizesBackup));
@ -1181,6 +1186,7 @@ struct ImGuiState
ImGuiWindow* HoveredWindow; // Will catch mouse inputs
ImGuiWindow* HoveredRootWindow; // Will catch mouse inputs (for focus/move only)
ImGuiID HoveredId; // Hovered widget
ImGuiID HoveredIdPreviousFrame;
ImGuiID ActiveId; // Active widget
ImGuiID ActiveIdPreviousFrame;
bool ActiveIdIsAlive;
@ -1257,6 +1263,7 @@ struct ImGuiState
HoveredWindow = NULL;
HoveredRootWindow = NULL;
HoveredId = 0;
HoveredIdPreviousFrame = 0;
ActiveId = 0;
ActiveIdPreviousFrame = 0;
ActiveIdIsAlive = false;
@ -1365,8 +1372,10 @@ public:
ImRect Rect() const { return ImRect(Pos, Pos+Size); }
float CalcFontSize() const { return GImGui->FontBaseSize * FontWindowScale; }
float TitleBarHeight() const { return (Flags & ImGuiWindowFlags_NoTitleBar) ? 0 : CalcFontSize() + GImGui->Style.FramePadding.y * 2.0f; }
float TitleBarHeight() const { return (Flags & ImGuiWindowFlags_NoTitleBar) ? 0.0f : CalcFontSize() + GImGui->Style.FramePadding.y * 2.0f; }
ImRect TitleBarRect() const { return ImRect(Pos, Pos + ImVec2(SizeFull.x, TitleBarHeight())); }
float MenuBarHeight() const { return (Flags & ImGuiWindowFlags_MenuBar) ? CalcFontSize() + GImGui->Style.FramePadding.y * 2.0f : 0.0f; }
ImRect MenuBarRect() const { float y1 = Pos.y + TitleBarHeight(); return ImRect(Pos.x, y1, Pos.x + SizeFull.x, y1 + MenuBarHeight()); }
ImVec2 WindowPadding() const { return ((Flags & ImGuiWindowFlags_ChildWindow) && !(Flags & (ImGuiWindowFlags_ShowBorders | ImGuiWindowFlags_ComboBox | ImGuiWindowFlags_Popup))) ? ImVec2(0,0) : GImGui->Style.WindowPadding; }
ImU32 Color(ImGuiCol idx, float a=1.f) const { ImVec4 c = GImGui->Style.Colors[idx]; c.w *= GImGui->Style.Alpha * a; return ImGui::ColorConvertFloat4ToU32(c); }
ImU32 Color(const ImVec4& col) const { ImVec4 c = col; c.w *= GImGui->Style.Alpha; return ImGui::ColorConvertFloat4ToU32(c); }
@ -2031,6 +2040,7 @@ void ImGui::NewFrame()
g.IO.Framerate = 1.0f / (g.FramerateSecPerFrameAccum / (float)IM_ARRAYSIZE(g.FramerateSecPerFrame));
// Clear reference to active widget if the widget isn't alive anymore
g.HoveredIdPreviousFrame = g.HoveredId;
g.HoveredId = 0;
if (!g.ActiveIdIsAlive && g.ActiveIdPreviousFrame == g.ActiveId && g.ActiveId != 0)
SetActiveId(0);
@ -3497,7 +3507,11 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
if (flags & ImGuiWindowFlags_Menu)
{
IM_ASSERT(window_pos_set_by_api);
ImRect rect_to_avoid = ImRect(parent_window->Pos.x + 4.0f, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - 4.0f, FLT_MAX); // We want some overlap to convey the relative depth of each popup (here hard-coded to 4)
ImRect rect_to_avoid;
if (parent_window->DC.MenuBarAppending)
rect_to_avoid = ImRect(-FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight(), FLT_MAX, parent_window->Pos.y + parent_window->TitleBarHeight() + parent_window->MenuBarHeight());
else
rect_to_avoid = ImRect(parent_window->Pos.x + 4.0f, -FLT_MAX, parent_window->Pos.x + parent_window->Size.x - 4.0f, FLT_MAX); // We want some overlap to convey the relative depth of each popup (here hard-coded to 4)
window->PosFloat = FindBestWindowPos(window->PosFloat, window->Size, &window->AutoPosLastDirection, rect_to_avoid);
}
else if ((flags & ImGuiWindowFlags_Popup) != 0 && window_appearing_after_being_hidden && !window_pos_set_by_api)
@ -3635,6 +3649,13 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
if (!(flags & ImGuiWindowFlags_NoTitleBar))
window->DrawList->AddRectFilled(title_bar_rect.GetTL(), title_bar_rect.GetBR(), window->Color(ImGuiCol_TitleBg), window_rounding, 1|2);
// Menu bar
if (flags & ImGuiWindowFlags_MenuBar)
{
ImRect menu_bar_rect = window->MenuBarRect();
window->DrawList->AddRectFilled(menu_bar_rect.GetTL(), menu_bar_rect.GetBR(), window->Color(ImGuiCol_MenuBarBg), (flags & ImGuiWindowFlags_NoTitleBar) ? window_rounding : 0.0f, 1|2);
}
// Borders
if (flags & ImGuiWindowFlags_ShowBorders)
{
@ -3671,12 +3692,14 @@ bool ImGui::Begin(const char* name, bool* p_opened, const ImVec2& size_on_first_
// Setup drawing context
window->DC.ColumnsStartX = window->WindowPadding().x;
window->DC.ColumnsOffsetX = 0.0f;
window->DC.CursorStartPos = window->Pos + ImVec2(window->DC.ColumnsStartX + window->DC.ColumnsOffsetX, window->TitleBarHeight() + window->WindowPadding().y) - ImVec2(0.0f, window->ScrollY);
window->DC.CursorStartPos = window->Pos + ImVec2(window->DC.ColumnsStartX + window->DC.ColumnsOffsetX, window->TitleBarHeight() + window->MenuBarHeight() + window->WindowPadding().y) - ImVec2(0.0f, window->ScrollY);
window->DC.CursorPos = window->DC.CursorStartPos;
window->DC.CursorPosPrevLine = window->DC.CursorPos;
window->DC.CursorMaxPos = window->DC.CursorStartPos;
window->DC.CurrentLineHeight = window->DC.PrevLineHeight = 0.0f;
window->DC.CurrentLineTextBaseOffset = window->DC.PrevLineTextBaseOffset = 0.0f;
window->DC.MenuBarAppending = false;
window->DC.MenuBarOffsetX = window->DC.ColumnsStartX;
window->DC.LogLinePosY = window->DC.CursorPos.y - 9999.0f;
window->DC.ChildWindows.resize(0);
window->DC.ItemWidth.resize(0);
@ -4094,6 +4117,7 @@ const char* ImGui::GetStyleColName(ImGuiCol idx)
case ImGuiCol_FrameBgActive: return "FrameBgActive";
case ImGuiCol_TitleBg: return "TitleBg";
case ImGuiCol_TitleBgCollapsed: return "TitleBgCollapsed";
case ImGuiCol_MenuBarBg: return "MenuBarBg";
case ImGuiCol_ScrollbarBg: return "ScrollbarBg";
case ImGuiCol_ScrollbarGrab: return "ScrollbarGrab";
case ImGuiCol_ScrollbarGrabHovered: return "ScrollbarGrabHovered";
@ -4327,7 +4351,7 @@ ImVec2 ImGui::GetContentRegionMax()
ImVec2 ImGui::GetWindowContentRegionMin()
{
ImGuiWindow* window = GetCurrentWindow();
return ImVec2(0, window->TitleBarHeight()) + window->WindowPadding();
return ImVec2(0, window->TitleBarHeight() + window->MenuBarHeight()) + window->WindowPadding();
}
ImVec2 ImGui::GetWindowContentRegionMax()
@ -7415,6 +7439,32 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected)
return false;
}
bool ImGui::BeginMenuBar()
{
ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems)
return false;
IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
IM_ASSERT(!window->DC.MenuBarAppending);
window->DC.MenuBarAppending = true;
ImGui::PushID("##menubar");
return true;
}
void ImGui::EndMenuBar()
{
ImGuiWindow* window = GetCurrentWindow();
if (window->SkipItems)
return;
IM_ASSERT(window->Flags & ImGuiWindowFlags_MenuBar);
IM_ASSERT(window->DC.MenuBarAppending);
window->DC.MenuBarAppending = false;
ImGui::PopID();
}
// FIXME-WIP: v1.39 in development, API *WILL* change!
bool ImGui::BeginMenu(const char* label)
{
@ -7423,16 +7473,36 @@ bool ImGui::BeginMenu(const char* label)
if (window->SkipItems)
return false;
const ImGuiStyle& style = g.Style;
const ImGuiID id = window->GetID(label);
bool opened = IsPopupOpen(id);
ImVec2 pos = ImGui::GetCursorScreenPos();
ImVec2 pos;
ImVec2 popup_pos;
ImVec2 backup_pos = window->DC.CursorPos;
ImVec2 label_size = CalcTextSize(label, NULL, true);
if (window->DC.MenuBarAppending)
{
// FIXME: Should be moved at a lower-level once we have horizontal layout (#97)
pos = window->DC.CursorPos = ImVec2(window->Pos.x + window->DC.MenuBarOffsetX, window->Pos.y + window->TitleBarHeight() + style.FramePadding.y);
popup_pos = ImVec2(pos.x - style.ItemSpacing.x, pos.y);
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, style.ItemSpacing * 2.0f);
float w = label_size.x;
SelectableEx(label, opened, ImVec2(w, 0.0f), ImVec2(w, 0.0f));
window->DC.MenuBarOffsetX += (label_size.x + style.ItemSpacing.x);
window->DC.CursorPos = backup_pos;
ImGui::PopStyleVar();
}
else
{
pos = window->DC.CursorPos;
popup_pos = ImVec2(pos.x, pos.y - style.WindowPadding.y);
float w = window->MenuColumns.DeclColumns(label_size.x, 0.0f, (float)(int)(g.FontSize * 1.20f)); // Feedback to next frame
float extra_w = ImMax(0.0f, window->Pos.x + ImGui::GetContentRegionMax().x - pos.x - w);
bool opened = IsPopupOpen(id);
SelectableEx(label, opened, ImVec2(w, 0.0f), ImVec2(0.0f, 0.0f));
RenderCollapseTriangle(pos + ImVec2(window->MenuColumns.Pos[2] + extra_w + g.FontSize * 0.20f, 0.0f), false);
}
bool hovered = ImGui::IsItemHovered();
if (!opened && hovered)
@ -7447,7 +7517,7 @@ bool ImGui::BeginMenu(const char* label)
}
if (opened)
{
ImGui::SetNextWindowPos(ImVec2(pos.x, pos.y - g.Style.WindowPadding.y), ImGuiSetCond_Always);
ImGui::SetNextWindowPos(popup_pos, ImGuiSetCond_Always);
bool popup_opened = BeginPopupEx(label, ImGuiWindowFlags_Menu);
IM_ASSERT(opened == popup_opened);
}

4
imgui.h
View File

@ -363,6 +363,8 @@ namespace ImGui
// Widgets: Menus
// FIXME-WIP: v1.39 in development, API *WILL* change
IMGUI_API bool BeginMenuBar();
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
@ -456,6 +458,7 @@ enum ImGuiWindowFlags_
ImGuiWindowFlags_AlwaysAutoResize = 1 << 6, // Resize every window to its content every frame
ImGuiWindowFlags_ShowBorders = 1 << 7, // Show borders around windows and items
ImGuiWindowFlags_NoSavedSettings = 1 << 8, // Never load/save settings in .ini file
ImGuiWindowFlags_MenuBar = 1 << 9, // Has a menubar
// [Internal]
ImGuiWindowFlags_ChildWindow = 1 << 20, // Don't use! For internal use by BeginChild()
ImGuiWindowFlags_ChildWindowAutoFitX = 1 << 21, // Don't use! For internal use by BeginChild()
@ -520,6 +523,7 @@ enum ImGuiCol_
ImGuiCol_FrameBgActive,
ImGuiCol_TitleBg,
ImGuiCol_TitleBgCollapsed,
ImGuiCol_MenuBarBg,
ImGuiCol_ScrollbarBg,
ImGuiCol_ScrollbarGrab,
ImGuiCol_ScrollbarGrabHovered,