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Internals: TabBar renaming and shuffling stuff around. 

+ sneaking a readme change
This commit is contained in:
ocornut 2020-08-31 17:25:16 +02:00
parent 13f718337a
commit ce230fc370
4 changed files with 44 additions and 35 deletions
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2
docs/README.md
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@ -115,7 +115,7 @@ Officially maintained bindings (in repository):
Third-party bindings (see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/) page):
- Languages: C, C# and: Beef, ChaiScript, D, Go, Haskell, Haxe/hxcpp, Java, JavaScript, Julia, Kotlin, Lua, Odin, Pascal, PureBasic, Python, Ruby, Rust, Swift...
- Frameworks: AGS/Adventure Game Studio, Amethyst, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium, GML/Game Maker Studio2, Godot, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, NanoRT, Nim Game Lib, Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, Photoshop, px_render, Qt/QtDirect3D, SFML, Sokol, Unity, Unreal Engine 4, vtk, Win32 GDI, WxWidgets.
- Frameworks: AGS/Adventure Game Studio, Amethyst, bsf, Cinder, Cocos2d-x, Diligent Engine, Flexium, GML/Game Maker Studio2, Godot, GTK3+OpenGL3, Irrlicht Engine, LÖVE+LUA, Magnum, NanoRT, nCine, Nim Game Lib, Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, Photoshop, px_render, Qt/QtDirect3D, SFML, Sokol, Unity, Unreal Engine 4, vtk, Win32 GDI, WxWidgets.
- Note that C bindings ([cimgui](https://github.com/cimgui/cimgui)) are auto-generated, you can use its json/lua output to generate bindings for other languages.
Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.

4
imgui.cpp
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@ -10504,8 +10504,8 @@ void ImGui::ShowMetricsWindow(bool* p_open)
{
const ImGuiTabItem* tab = &tab_bar->Tabs[tab_n];
ImGui::PushID(tab);
if (ImGui::SmallButton("<")) { TabBarQueueChangeTabOrder(tab_bar, tab, -1); } ImGui::SameLine(0, 2);
if (ImGui::SmallButton(">")) { TabBarQueueChangeTabOrder(tab_bar, tab, +1); } ImGui::SameLine();
if (ImGui::SmallButton("<")) { TabBarQueueReorder(tab_bar, tab, -1); } ImGui::SameLine(0, 2);
if (ImGui::SmallButton(">")) { TabBarQueueReorder(tab_bar, tab, +1); } ImGui::SameLine();
ImGui::Text("%02d%c Tab 0x%08X '%s'", tab_n, (tab->ID == tab_bar->SelectedTabId) ? '*' : ' ', tab->ID, (tab->NameOffset != -1) ? tab_bar->GetTabName(tab) : "");
ImGui::PopID();
}

7
imgui_internal.h
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@ -1731,8 +1731,8 @@ struct ImGuiTabBar
int PrevFrameVisible;
ImRect BarRect;
float LastTabContentHeight; // Record the height of contents submitted below the tab bar
float OffsetMax; // Distance from BarRect.Min.x, locked during layout
float OffsetMaxIdeal; // Ideal offset if all tabs were visible and not clipped
float WidthAllTabs; // Actual width of all tabs (locked during layout)
float WidthAllTabsIdeal; // Ideal width if all tabs were visible and not clipped
float OffsetNextTab; // Distance from BarRect.Min.x, incremented with each BeginTabItem() call, not used if ImGuiTabBarFlags_Reorderable if set.
float ScrollingAnim;
float ScrollingTarget;
@ -1931,7 +1931,8 @@ namespace ImGui
IMGUI_API ImGuiTabItem* TabBarFindTabByID(ImGuiTabBar* tab_bar, ImGuiID tab_id);
IMGUI_API void TabBarRemoveTab(ImGuiTabBar* tab_bar, ImGuiID tab_id);
IMGUI_API void TabBarCloseTab(ImGuiTabBar* tab_bar, ImGuiTabItem* tab);
IMGUI_API void TabBarQueueChangeTabOrder(ImGuiTabBar* tab_bar, const ImGuiTabItem* tab, int dir);
IMGUI_API void TabBarQueueReorder(ImGuiTabBar* tab_bar, const ImGuiTabItem* tab, int dir);
IMGUI_API bool TabBarProcessReorder(ImGuiTabBar* tab_bar);
IMGUI_API bool TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open, ImGuiTabItemFlags flags);
IMGUI_API ImVec2 TabItemCalcSize(const char* label, bool has_close_button);
IMGUI_API void TabItemBackground(ImDrawList* draw_list, const ImRect& bb, ImGuiTabItemFlags flags, ImU32 col);

66
imgui_widgets.cpp
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@ -6761,7 +6761,7 @@ bool ImGui::MenuItem(const char* label, const char* shortcut, bool* p_selected,
// - TabBarFindTabById() [Internal]
// - TabBarRemoveTab() [Internal]
// - TabBarCloseTab() [Internal]
// - TabBarScrollClamp()v
// - TabBarScrollClamp() [Internal]
// - TabBarScrollToTab() [Internal]
// - TabBarQueueChangeTabOrder() [Internal]
// - TabBarScrollingButtons() [Internal]
@ -6785,7 +6785,7 @@ ImGuiTabBar::ImGuiTabBar()
SelectedTabId = NextSelectedTabId = VisibleTabId = 0;
CurrFrameVisible = PrevFrameVisible = -1;
LastTabContentHeight = 0.0f;
OffsetMax = OffsetMaxIdeal = OffsetNextTab = 0.0f;
WidthAllTabs = WidthAllTabsIdeal = OffsetNextTab = 0.0f;
ScrollingAnim = ScrollingTarget = ScrollingTargetDistToVisibility = ScrollingSpeed = 0.0f;
Flags = ImGuiTabBarFlags_None;
ReorderRequestTabId = 0;
@ -6951,23 +6951,9 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
// Process order change request (we could probably process it when requested but it's just saner to do it in a single spot).
if (tab_bar->ReorderRequestTabId != 0)
{
if (ImGuiTabItem* tab1 = TabBarFindTabByID(tab_bar, tab_bar->ReorderRequestTabId))
{
//IM_ASSERT(tab_bar->Flags & ImGuiTabBarFlags_Reorderable); // <- this may happen when using debug tools
int tab2_order = tab_bar->GetTabOrder(tab1) + tab_bar->ReorderRequestDir;
if (tab2_order >= 0 && tab2_order < tab_bar->Tabs.Size)
{
ImGuiTabItem* tab2 = &tab_bar->Tabs[tab2_order];
ImGuiTabItem item_tmp = *tab1;
*tab1 = *tab2;
*tab2 = item_tmp;
if (tab2->ID == tab_bar->SelectedTabId)
scroll_track_selected_tab_id = tab2->ID;
tab1 = tab2 = NULL;
}
if (tab_bar->Flags & ImGuiTabBarFlags_SaveSettings)
MarkIniSettingsDirty();
}
if (TabBarProcessReorder(tab_bar))
if (tab_bar->ReorderRequestTabId == tab_bar->SelectedTabId)
scroll_track_selected_tab_id = tab_bar->ReorderRequestTabId;
tab_bar->ReorderRequestTabId = 0;
}
@ -7041,11 +7027,11 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
offset_x += tab->Width + g.Style.ItemInnerSpacing.x;
offset_x_ideal += tab->ContentWidth + g.Style.ItemInnerSpacing.x;
}
tab_bar->OffsetMax = ImMax(offset_x - g.Style.ItemInnerSpacing.x, 0.0f);
tab_bar->OffsetMaxIdeal = ImMax(offset_x_ideal - g.Style.ItemInnerSpacing.x, 0.0f);
tab_bar->WidthAllTabs = ImMax(offset_x - g.Style.ItemInnerSpacing.x, 0.0f);
tab_bar->WidthAllTabsIdeal = ImMax(offset_x_ideal - g.Style.ItemInnerSpacing.x, 0.0f);
// Horizontal scrolling buttons
const bool scrolling_buttons = (tab_bar->OffsetMax > tab_bar->BarRect.GetWidth() && tab_bar->Tabs.Size > 1) && !(tab_bar->Flags & ImGuiTabBarFlags_NoTabListScrollingButtons) && (tab_bar->Flags & ImGuiTabBarFlags_FittingPolicyScroll);
const bool scrolling_buttons = (tab_bar->WidthAllTabs > tab_bar->BarRect.GetWidth() && tab_bar->Tabs.Size > 1) && !(tab_bar->Flags & ImGuiTabBarFlags_NoTabListScrollingButtons) && (tab_bar->Flags & ImGuiTabBarFlags_FittingPolicyScroll);
if (scrolling_buttons)
if (ImGuiTabItem* tab_to_select = TabBarScrollingButtons(tab_bar)) // NB: Will alter BarRect.Max.x!
scroll_track_selected_tab_id = tab_bar->SelectedTabId = tab_to_select->ID;
@ -7087,7 +7073,7 @@ static void ImGui::TabBarLayout(ImGuiTabBar* tab_bar)
// Actual layout in host window (we don't do it in BeginTabBar() so as not to waste an extra frame)
ImGuiWindow* window = g.CurrentWindow;
window->DC.CursorPos = tab_bar->BarRect.Min;
ItemSize(ImVec2(tab_bar->OffsetMaxIdeal, tab_bar->BarRect.GetHeight()), tab_bar->FramePadding.y);
ItemSize(ImVec2(tab_bar->WidthAllTabsIdeal, tab_bar->BarRect.GetHeight()), tab_bar->FramePadding.y);
}
// Dockables uses Name/ID in the global namespace. Non-dockable items use the ID stack.
@ -7150,7 +7136,7 @@ void ImGui::TabBarCloseTab(ImGuiTabBar* tab_bar, ImGuiTabItem* tab)
static float ImGui::TabBarScrollClamp(ImGuiTabBar* tab_bar, float scrolling)
{
scrolling = ImMin(scrolling, tab_bar->OffsetMax - tab_bar->BarRect.GetWidth());
scrolling = ImMin(scrolling, tab_bar->WidthAllTabs - tab_bar->BarRect.GetWidth());
return ImMax(scrolling, 0.0f);
}
@ -7174,7 +7160,7 @@ static void ImGui::TabBarScrollToTab(ImGuiTabBar* tab_bar, ImGuiTabItem* tab)
}
}
void ImGui::TabBarQueueChangeTabOrder(ImGuiTabBar* tab_bar, const ImGuiTabItem* tab, int dir)
void ImGui::TabBarQueueReorder(ImGuiTabBar* tab_bar, const ImGuiTabItem* tab, int dir)
{
IM_ASSERT(dir == -1 || dir == +1);
IM_ASSERT(tab_bar->ReorderRequestTabId == 0);
@ -7182,6 +7168,28 @@ void ImGui::TabBarQueueChangeTabOrder(ImGuiTabBar* tab_bar, const ImGuiTabItem*
tab_bar->ReorderRequestDir = (ImS8)dir;
}
bool ImGui::TabBarProcessReorder(ImGuiTabBar* tab_bar)
{
ImGuiTabItem* tab1 = TabBarFindTabByID(tab_bar, tab_bar->ReorderRequestTabId);
if (!tab1)
return false;
//IM_ASSERT(tab_bar->Flags & ImGuiTabBarFlags_Reorderable); // <- this may happen when using debug tools
int tab2_order = tab_bar->GetTabOrder(tab1) + tab_bar->ReorderRequestDir;
if (tab2_order < 0 || tab2_order >= tab_bar->Tabs.Size)
return false;
ImGuiTabItem* tab2 = &tab_bar->Tabs[tab2_order];
ImGuiTabItem item_tmp = *tab1;
*tab1 = *tab2;
*tab2 = item_tmp;
tab1 = tab2 = NULL;
if (tab_bar->Flags & ImGuiTabBarFlags_SaveSettings)
MarkIniSettingsDirty();
return true;
}
static ImGuiTabItem* ImGui::TabBarScrollingButtons(ImGuiTabBar* tab_bar)
{
ImGuiContext& g = *GImGui;
@ -7293,7 +7301,7 @@ bool ImGui::BeginTabItem(const char* label, bool* p_open, ImGuiTabItemFlags f
ImGuiTabBar* tab_bar = g.CurrentTabBar;
if (tab_bar == NULL)
{
IM_ASSERT_USER_ERROR(tab_bar, "BeginTabItem() Needs to be called between BeginTabBar() and EndTabBar()!");
IM_ASSERT_USER_ERROR(tab_bar, "Needs to be called between BeginTabBar() and EndTabBar()!");
return false;
}
bool ret = TabItemEx(tab_bar, label, p_open, flags);
@ -7315,7 +7323,7 @@ void ImGui::EndTabItem()
ImGuiTabBar* tab_bar = g.CurrentTabBar;
if (tab_bar == NULL)
{
IM_ASSERT(tab_bar != NULL && "Needs to be called between BeginTabBar() and EndTabBar()!");
IM_ASSERT_USER_ERROR(tab_bar != NULL, "Needs to be called between BeginTabBar() and EndTabBar()!");
return;
}
IM_ASSERT(tab_bar->LastTabItemIdx >= 0);
@ -7471,12 +7479,12 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
if (g.IO.MouseDelta.x < 0.0f && g.IO.MousePos.x < bb.Min.x)
{
if (tab_bar->Flags & ImGuiTabBarFlags_Reorderable)
TabBarQueueChangeTabOrder(tab_bar, tab, -1);
TabBarQueueReorder(tab_bar, tab, -1);
}
else if (g.IO.MouseDelta.x > 0.0f && g.IO.MousePos.x > bb.Max.x)
{
if (tab_bar->Flags & ImGuiTabBarFlags_Reorderable)
TabBarQueueChangeTabOrder(tab_bar, tab, +1);
TabBarQueueReorder(tab_bar, tab, +1);
}
}
}