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Internals: Docking, Tab Bar: Add DockNodeBeginAmendTabBar() and work toward making hybrid dock node with windows tab bars somehow work (not done).

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This commit is contained in:
ocornut
2020-10-14 19:11:00 +02:00
parent bae2240eda
commit b26f1530b7
3 changed files with 56 additions and 22 deletions
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46
imgui.cpp
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@ -12510,6 +12510,8 @@ bool ImGui::DockContextCalcDropPosForDocking(ImGuiWindow* target, ImGuiDockNode*
// - DockNodeStartMouseMovingWindow()
// - DockNodeUpdate()
// - DockNodeUpdateWindowMenu()
// - DockNodeBeginAmendTabBar()
// - DockNodeEndAmendTabBar()
// - DockNodeUpdateTabBar()
// - DockNodeAddTabBar()
// - DockNodeRemoveTabBar()
@ -13231,7 +13233,8 @@ static ImGuiID ImGui::DockNodeUpdateWindowMenu(ImGuiDockNode* node, ImGuiTabBar*
for (int tab_n = 0; tab_n < tab_bar->Tabs.Size; tab_n++)
{
ImGuiTabItem* tab = &tab_bar->Tabs[tab_n];
IM_ASSERT(tab->Window != NULL);
if (tab->Window == NULL)
continue;
if (Selectable(tab->Window->Name, tab->ID == tab_bar->SelectedTabId))
ret_tab_id = tab->ID;
SameLine();
@ -13243,6 +13246,26 @@ static ImGuiID ImGui::DockNodeUpdateWindowMenu(ImGuiDockNode* node, ImGuiTabBar*
return ret_tab_id;
}
// User helper to append/amend into a dock node tab bar. Most commonly used to add e.g. a "+" button.
bool ImGui::DockNodeBeginAmendTabBar(ImGuiDockNode* node)
{
if (node->TabBar == NULL || node->HostWindow == NULL)
return false;
Begin(node->HostWindow->Name);
PushOverrideID(node->ID);
bool ret = BeginTabBarEx(node->TabBar, node->TabBar->BarRect, node->TabBar->Flags, node);
IM_ASSERT(ret);
return true;
}
void ImGui::DockNodeEndAmendTabBar()
{
EndTabBar();
PopID();
End();
}
// Submit the tab bar corresponding to a dock node and various housekeeping details.
static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_window)
{
ImGuiContext& g = *GImGui;
@ -13446,7 +13469,14 @@ static void ImGui::DockNodeUpdateTabBar(ImGuiDockNode* node, ImGuiWindow* host_w
if (g.HoveredId == 0 || g.HoveredId == title_bar_id || g.ActiveId == title_bar_id)
{
bool held;
ButtonBehavior(title_bar_rect, title_bar_id, NULL, &held);
ButtonBehavior(title_bar_rect, title_bar_id, NULL, &held, ImGuiButtonFlags_AllowItemOverlap);
if (g.HoveredId == title_bar_id)
{
// ImGuiButtonFlags_AllowItemOverlap + SetItemAllowOverlap() required for appending into dock node tab bar,
// otherwise dragging window will steal HoveredId and amended tabs cannot get them.
host_window->DC.LastItemId = title_bar_id;
SetItemAllowOverlap();
}
if (held)
{
if (IsMouseClicked(0))
@ -15847,13 +15877,13 @@ void ImGui::ShowMetricsWindow(bool* p_open)
const char* buf_end = buf + IM_ARRAYSIZE(buf);
const bool is_active = (tab_bar->PrevFrameVisible >= ImGui::GetFrameCount() - 2);
p += ImFormatString(p, buf_end - p, "Tab Bar 0x%08X (%d tabs)%s", tab_bar->ID, tab_bar->Tabs.Size, is_active ? "" : " *Inactive*");
if (tab_bar->Flags & ImGuiTabBarFlags_DockNode)
p += ImFormatString(p, buf_end - p, " { ");
for (int tab_n = 0; tab_n < ImMin(tab_bar->Tabs.Size, 3); tab_n++)
{
p += ImFormatString(p, buf_end - p, " { ");
for (int tab_n = 0; tab_n < ImMin(tab_bar->Tabs.Size, 3); tab_n++)
p += ImFormatString(p, buf_end - p, "%s'%s'", tab_n > 0 ? ", " : "", tab_bar->Tabs[tab_n].Window->Name);
p += ImFormatString(p, buf_end - p, (tab_bar->Tabs.Size > 3) ? " ... }" : " } ");
ImGuiTabItem* tab = &tab_bar->Tabs[tab_n];
p += ImFormatString(p, buf_end - p, "%s'%s'", tab_n > 0 ? ", " : "", (tab->Window || tab->NameOffset != -1) ? tab_bar->GetTabName(tab) : "???");
}
p += ImFormatString(p, buf_end - p, (tab_bar->Tabs.Size > 3) ? " ... }" : " } ");
if (!is_active) { PushStyleColor(ImGuiCol_Text, GetStyleColorVec4(ImGuiCol_TextDisabled)); }
bool open = ImGui::TreeNode(tab_bar, "%s", buf);
if (!is_active) { PopStyleColor(); }
@ -15872,7 +15902,7 @@ void ImGui::ShowMetricsWindow(bool* p_open)
ImGui::PushID(tab);
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' Offset: %.1f, Width: %.1f/%.1f", tab_n, (tab->ID == tab_bar->SelectedTabId) ? '*' : ' ', tab->ID, (tab->Window || tab->NameOffset != -1) ? tab_bar->GetTabName(tab) : "", tab->Offset, tab->Width, tab->ContentWidth);
ImGui::Text("%02d%c Tab 0x%08X '%s' Offset: %.1f, Width: %.1f/%.1f", tab_n, (tab->ID == tab_bar->SelectedTabId) ? '*' : ' ', tab->ID, (tab->Window || tab->NameOffset != -1) ? tab_bar->GetTabName(tab) : "???", tab->Offset, tab->Width, tab->ContentWidth);
ImGui::PopID();
}
ImGui::TreePop();