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Viewports: trying to treat GetMainViewport() as const. Reducing unnecessary casts of ImGuiViewportP*

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Metrics: readded root Drawlists node in metrics to match master.
The (void*) casts are implying const-casst but currently left GetMainViewport() as returning non-const.
This commit is contained in:
ocornut 2021-02-09 12:02:55 +01:00
parent 862bfc53d3
commit 1a3af8cb4c
5 changed files with 47 additions and 22 deletions
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48
imgui.cpp
View File

@ -5295,7 +5295,7 @@ ImGuiWindow* ImGui::FindWindowByName(const char* name)
static void ApplyWindowSettings(ImGuiWindow* window, ImGuiWindowSettings* settings)
{
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
const ImGuiViewport* main_viewport = ImGui::GetMainViewport();
window->ViewportPos = main_viewport->Pos;
if (settings->ViewportId)
{
@ -5321,7 +5321,7 @@ static ImGuiWindow* CreateNewWindow(const char* name, ImGuiWindowFlags flags)
g.WindowsById.SetVoidPtr(window->ID, window);
// Default/arbitrary window position. Use SetNextWindowPos() with the appropriate condition flag to change the initial position of a window.
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
const ImGuiViewport* main_viewport = ImGui::GetMainViewport();
window->Pos = main_viewport->Pos + ImVec2(60, 60);
window->ViewportPos = main_viewport->Pos;
@ -6412,7 +6412,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
if (window->Viewport->PlatformMonitor == -1)
{
// Fallback for "lost" window (e.g. a monitor disconnected): we move the window back over the main viewport
ImGuiViewport* main_viewport = GetMainViewport();
const ImGuiViewport* main_viewport = GetMainViewport();
SetWindowPos(window, main_viewport->Pos + style.DisplayWindowPadding, ImGuiCond_Always);
}
else
@ -8878,8 +8878,8 @@ bool ImGui::BeginPopupModal(const char* name, bool* p_open, ImGuiWindowFlags fla
// FIXME: Should test for (PosCond & window->SetWindowPosAllowFlags) with the upcoming window.
if ((g.NextWindowData.Flags & ImGuiNextWindowDataFlags_HasPos) == 0)
{
ImGuiViewportP* viewport = window->WasActive ? window->Viewport : (ImGuiViewportP*)GetMainViewport(); // FIXME-VIEWPORT: What may be our reference viewport?
SetNextWindowPos(viewport->GetMainRect().GetCenter(), ImGuiCond_FirstUseEver, ImVec2(0.5f, 0.5f));
const ImGuiViewport* viewport = window->WasActive ? window->Viewport : GetMainViewport(); // FIXME-VIEWPORT: What may be our reference viewport?
SetNextWindowPos(viewport->GetCenter(), ImGuiCond_FirstUseEver, ImVec2(0.5f, 0.5f));
}
flags |= ImGuiWindowFlags_Popup | ImGuiWindowFlags_Modal | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoDocking;
@ -10259,7 +10259,7 @@ void ImGui::NavUpdateWindowingOverlay()
if (g.NavWindowingListWindow == NULL)
g.NavWindowingListWindow = FindWindowByName("###NavWindowingList");
ImGuiViewportP* viewport = /*g.NavWindow ? g.NavWindow->Viewport :*/ (ImGuiViewportP*)GetMainViewport();
const ImGuiViewport* viewport = /*g.NavWindow ? g.NavWindow->Viewport :*/ GetMainViewport();
SetNextWindowSizeConstraints(ImVec2(viewport->Size.x * 0.20f, viewport->Size.y * 0.20f), ImVec2(FLT_MAX, FLT_MAX));
SetNextWindowPos(viewport->Pos + viewport->Size * 0.5f, ImGuiCond_Always, ImVec2(0.5f, 0.5f));
PushStyleVar(ImGuiStyleVar_WindowPadding, g.Style.WindowPadding * 2.0f);
@ -11589,7 +11589,7 @@ static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
window->ViewportAllowPlatformMonitorExtend = -1;
// Restore main viewport if multi-viewport is not supported by the backend
ImGuiViewportP* main_viewport = (ImGuiViewportP*)GetMainViewport();
ImGuiViewportP* main_viewport = (ImGuiViewportP*)(void*)GetMainViewport();
if (!(g.ConfigFlagsCurrFrame & ImGuiConfigFlags_ViewportsEnable))
{
SetWindowViewport(window, main_viewport);
@ -14409,7 +14409,7 @@ void ImGui::DockNodeTreeUpdateSplitter(ImGuiDockNode* node)
/*
// [DEBUG] Render limits
ImDrawList* draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList((ImGuiViewportP*)GetMainViewport());
ImDrawList* draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList(GetMainViewport());
for (int n = 0; n < 2; n++)
if (axis == ImGuiAxis_X)
draw_list->AddLine(ImVec2(resize_limits[n], node->ChildNodes[n]->Pos.y), ImVec2(resize_limits[n], node->ChildNodes[n]->Pos.y + node->ChildNodes[n]->Size.y), IM_COL32(255, 0, 255, 255), 3.0f);
@ -14437,7 +14437,7 @@ void ImGui::DockNodeTreeUpdateSplitter(ImGuiDockNode* node)
for (int touching_node_n = 0; touching_node_n < touching_nodes[side_n].Size; touching_node_n++)
{
ImGuiDockNode* touching_node = touching_nodes[side_n][touching_node_n];
//ImDrawList* draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList((ImGuiViewportP*)GetMainViewport());
//ImDrawList* draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList(GetMainViewport());
//draw_list->AddRect(touching_node->Pos, touching_node->Pos + touching_node->Size, IM_COL32(255, 128, 0, 255));
while (touching_node->ParentNode != node)
{
@ -14653,7 +14653,7 @@ void ImGui::DockSpace(ImGuiID id, const ImVec2& size_arg, ImGuiDockNodeFlags fla
// The limitation with this call is that your window won't have a menu bar.
// Even though we could pass window flags, it would also require the user to be able to call BeginMenuBar() somehow meaning we can't Begin/End in a single function.
// But you can also use BeginMainMenuBar(). If you really want a menu bar inside the same window as the one hosting the dockspace, you will need to copy this code somewhere and tweak it.
ImGuiID ImGui::DockSpaceOverViewport(ImGuiViewport* viewport, ImGuiDockNodeFlags dockspace_flags, const ImGuiWindowClass* window_class)
ImGuiID ImGui::DockSpaceOverViewport(const ImGuiViewport* viewport, ImGuiDockNodeFlags dockspace_flags, const ImGuiWindowClass* window_class)
{
if (viewport == NULL)
viewport = GetMainViewport();
@ -15980,9 +15980,33 @@ void ImGui::ShowMetricsWindow(bool* p_open)
TreePop();
}
// Contents
// Windows
DebugNodeWindowsList(&g.Windows, "Windows");
//DebugNodeWindowsList(&g.WindowsFocusOrder, "WindowsFocusOrder");
// Drawlists
int drawlist_count = 0;
for (int viewport_i = 0; viewport_i < g.Viewports.Size; viewport_i++)
drawlist_count += g.Viewports[viewport_i]->DrawDataBuilder.GetDrawListCount();
if (TreeNode("DrawLists", "DrawLists (%d)", drawlist_count))
{
for (int viewport_i = 0; viewport_i < g.Viewports.Size; viewport_i++)
{
ImGuiViewportP* viewport = g.Viewports[viewport_i];
bool viewport_has_drawlist = false;
for (int layer_i = 0; layer_i < IM_ARRAYSIZE(viewport->DrawDataBuilder.Layers); layer_i++)
for (int draw_list_i = 0; draw_list_i < viewport->DrawDataBuilder.Layers[layer_i].Size; draw_list_i++)
{
if (!viewport_has_drawlist)
ImGui::Text("Active DrawLists in Viewport #%d, ID: 0x%08X", viewport->Idx, viewport->ID);
viewport_has_drawlist = true;
DebugNodeDrawList(NULL, viewport, viewport->DrawDataBuilder.Layers[layer_i][draw_list_i], "DrawList");
}
}
TreePop();
}
// Viewports
if (TreeNode("Viewports", "Viewports (%d)", g.Viewports.Size))
{
Indent(GetTreeNodeToLabelSpacing());
@ -16228,7 +16252,7 @@ void ImGui::ShowMetricsWindow(bool* p_open)
char buf[64] = "";
char* p = buf;
ImGuiDockNode* node = g.HoveredDockNode;
ImDrawList* overlay_draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList((ImGuiViewportP*)GetMainViewport());
ImDrawList* overlay_draw_list = node->HostWindow ? GetForegroundDrawList(node->HostWindow) : GetForegroundDrawList(GetMainViewport());
p += ImFormatString(p, buf + IM_ARRAYSIZE(buf) - p, "DockId: %X%s\n", node->ID, node->IsCentralNode() ? " *CentralNode*" : "");
p += ImFormatString(p, buf + IM_ARRAYSIZE(buf) - p, "WindowClass: %08X\n", node->WindowClass.ClassId);
p += ImFormatString(p, buf + IM_ARRAYSIZE(buf) - p, "Size: (%.0f, %.0f)\n", node->Size.x, node->Size.y);

8
imgui.h
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@ -756,7 +756,7 @@ namespace ImGui
// - Use DockSpace() to create an explicit dock node _within_ an existing window. See Docking demo for details.
// - DockSpace() needs to be submitted _before_ any window they can host. If you use a dockspace, submit it early in your app.
IMGUI_API void DockSpace(ImGuiID id, const ImVec2& size = ImVec2(0, 0), ImGuiDockNodeFlags flags = 0, const ImGuiWindowClass* window_class = NULL);
IMGUI_API ImGuiID DockSpaceOverViewport(ImGuiViewport* viewport = NULL, ImGuiDockNodeFlags flags = 0, const ImGuiWindowClass* window_class = NULL);
IMGUI_API ImGuiID DockSpaceOverViewport(const ImGuiViewport* viewport = NULL, ImGuiDockNodeFlags flags = 0, const ImGuiWindowClass* window_class = NULL);
IMGUI_API void SetNextWindowDockID(ImGuiID dock_id, ImGuiCond cond = 0); // set next window dock id (FIXME-DOCK)
IMGUI_API void SetNextWindowClass(const ImGuiWindowClass* window_class); // set next window class (rare/advanced uses: provide hints to the platform backend via altered viewport flags and parent/child info)
IMGUI_API ImGuiID GetWindowDockID();
@ -2874,9 +2874,9 @@ struct ImGuiViewport
~ImGuiViewport() { IM_ASSERT(PlatformUserData == NULL && RendererUserData == NULL); }
// Access work-area rectangle with GetWorkXXX functions (see comments above)
ImVec2 GetCenter() { return ImVec2(Pos.x + Size.x * 0.5f, Pos.y + Size.y * 0.5f); }
ImVec2 GetWorkPos() { return ImVec2(Pos.x + WorkOffsetMin.x, Pos.y + WorkOffsetMin.y); }
ImVec2 GetWorkSize() { return ImVec2(Size.x - WorkOffsetMin.x + WorkOffsetMax.x, Size.y - WorkOffsetMin.y + WorkOffsetMax.y); } // This not clamped
ImVec2 GetCenter() const { return ImVec2(Pos.x + Size.x * 0.5f, Pos.y + Size.y * 0.5f); }
ImVec2 GetWorkPos() const { return ImVec2(Pos.x + WorkOffsetMin.x, Pos.y + WorkOffsetMin.y); }
ImVec2 GetWorkSize() const { return ImVec2(Size.x - WorkOffsetMin.x + WorkOffsetMax.x, Size.y - WorkOffsetMin.y + WorkOffsetMax.y); } // This not clamped
};
//-----------------------------------------------------------------------------

6
imgui_demo.cpp
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@ -333,7 +333,7 @@ void ImGui::ShowDemoWindow(bool* p_open)
// We specify a default position/size in case there's no data in the .ini file.
// We only do it to make the demo applications a little more welcoming, but typically this isn't required.
ImGuiViewport* main_viewport = ImGui::GetMainViewport();
const ImGuiViewport* main_viewport = ImGui::GetMainViewport();
ImGui::SetNextWindowPos(ImVec2(main_viewport->GetWorkPos().x + 650, main_viewport->GetWorkPos().y + 20), ImGuiCond_FirstUseEver);
ImGui::SetNextWindowSize(ImVec2(550, 680), ImGuiCond_FirstUseEver);
@ -7031,7 +7031,7 @@ static void ShowExampleAppSimpleOverlay(bool* p_open)
if (corner != -1)
{
window_flags |= ImGuiWindowFlags_NoMove;
ImGuiViewport* viewport = ImGui::GetMainViewport();
const ImGuiViewport* viewport = ImGui::GetMainViewport();
ImVec2 work_area_pos = viewport->GetWorkPos(); // Instead of using viewport->Pos we use GetWorkPos() to avoid menu bars, if any!
ImVec2 work_area_size = viewport->GetWorkSize();
ImVec2 window_pos = ImVec2((corner & 1) ? (work_area_pos.x + work_area_size.x - DISTANCE) : (work_area_pos.x + DISTANCE), (corner & 2) ? (work_area_pos.y + work_area_size.y - DISTANCE) : (work_area_pos.y + DISTANCE));
@ -7368,7 +7368,7 @@ void ShowExampleAppDockSpace(bool* p_open)
ImGuiWindowFlags window_flags = ImGuiWindowFlags_MenuBar | ImGuiWindowFlags_NoDocking;
if (opt_fullscreen)
{
ImGuiViewport* viewport = ImGui::GetMainViewport();
const ImGuiViewport* viewport = ImGui::GetMainViewport();
ImGui::SetNextWindowPos(viewport->GetWorkPos());
ImGui::SetNextWindowSize(viewport->GetWorkSize());
ImGui::SetNextWindowViewport(viewport->ID);

5
imgui_internal.h
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@ -664,8 +664,9 @@ struct ImDrawDataBuilder
{
ImVector<ImDrawList*> Layers[2]; // Global layers for: regular, tooltip
void Clear() { for (int n = 0; n < IM_ARRAYSIZE(Layers); n++) Layers[n].resize(0); }
void ClearFreeMemory() { for (int n = 0; n < IM_ARRAYSIZE(Layers); n++) Layers[n].clear(); }
void Clear() { for (int n = 0; n < IM_ARRAYSIZE(Layers); n++) Layers[n].resize(0); }
void ClearFreeMemory() { for (int n = 0; n < IM_ARRAYSIZE(Layers); n++) Layers[n].clear(); }
int GetDrawListCount() const { int count = 0; for (int n = 0; n < IM_ARRAYSIZE(Layers); n++) count += Layers[n].Size; return count; }
IMGUI_API void FlattenIntoSingleLayer();
};

2
imgui_widgets.cpp
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@ -6575,7 +6575,7 @@ void ImGui::EndMenuBar()
bool ImGui::BeginMainMenuBar()
{
ImGuiContext& g = *GImGui;
ImGuiViewportP* viewport = (ImGuiViewportP*)GetMainViewport();
ImGuiViewportP* viewport = (ImGuiViewportP*)(void*)GetMainViewport();
ImGuiWindow* menu_bar_window = FindWindowByName("##MainMenuBar");
// For the main menu bar, which cannot be moved, we honor g.Style.DisplaySafeAreaPadding to ensure text can be visible on a TV set.