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Viewport: Added ImGuiConfigFlags_ViewportsDecoration to re-enable platform decoration (#1542)

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This commit is contained in:
omar
2018-10-09 14:19:39 +02:00
parent 84507cc744
commit 7b3433c68b
4 changed files with 36 additions and 24 deletions
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1
docs/TODO.txt
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@@ -305,6 +305,7 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
- examples: move ImGui::NewFrame() out of the backend _NewFrame() ?
- viewport: make it possible to have no main/hosting viewport
- viewport: with platform decoration enabled, platform may force constraint (e.g. minimum size)
- viewport: use getfocus/setfocus api to synchronize imgui<>platform focus better (e.g imgui-side ctrl-tab can focus os window, OS initial setup and alt-tab can focus imgui window etc.)
- viewport: store per-viewport/monitor DPI in .ini file so an application reload or main window changing DPI on reload can be properly patched for.
- viewport: vulkan renderer implementation.

37
imgui.cpp
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@@ -3237,10 +3237,13 @@ void ImGui::NewFrame()
{
if ((g.IO.BackendFlags & ImGuiBackendFlags_PlatformHasViewports) && (g.IO.BackendFlags & ImGuiBackendFlags_RendererHasViewports))
{
IM_ASSERT((g.FrameCount == 0 || g.FrameCount == g.FrameCountPlatformEnded) && "Forgot to call UpdatePlatformWindows() at the end of the previous frame?");
IM_ASSERT((g.FrameCount == 0 || g.FrameCount == g.FrameCountPlatformEnded) && "Forgot to call UpdatePlatformWindows() in main loop after EndFrame()?");
IM_ASSERT(g.PlatformIO.Platform_CreateWindow != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_DestroyWindow != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_GetWindowPos != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_SetWindowPos != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_GetWindowSize != NULL && "Platform init didn't install handlers?");
IM_ASSERT(g.PlatformIO.Platform_SetWindowSize != NULL && "Platform init didn't install handlers?");
IM_ASSERT((g.Viewports[0]->PlatformUserData != NULL || g.Viewports[0]->PlatformHandle != NULL) && "Platform init didn't setup main viewport.");
#ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
IM_ASSERT(g.IO.RenderDrawListsFn == NULL); // Call ImGui::Render() then pass ImGui::GetDrawData() yourself to your render function!
@@ -5175,7 +5178,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
{
// Late create viewport, based on the assumption that with our calculations, the DPI will be known ahead (same as the DPI of the selection done in UpdateSelectWindowViewport)
//ImGuiViewport* old_viewport = window->Viewport;
ImGuiViewportFlags viewport_flags = ImGuiViewportFlags_NoDecoration | ImGuiViewportFlags_NoFocusOnAppearing | ((window->Flags & ImGuiWindowFlags_NoInputs) ? ImGuiViewportFlags_NoInputs : 0);
ImGuiViewportFlags viewport_flags = ImGuiViewportFlags_NoFocusOnAppearing | ((window->Flags & ImGuiWindowFlags_NoInputs) ? ImGuiViewportFlags_NoInputs : 0);
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, viewport_flags);
// FIXME-DPI
@@ -7416,6 +7419,7 @@ static ImGuiViewportP* FindViewportHoveredFromPlatformWindowStack(const ImVec2 m
return best_candidate;
}
// Called in NewFrame()
static void ImGui::UpdateViewports()
{
ImGuiContext& g = *GImGui;
@@ -7641,7 +7645,7 @@ static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
{
window->Viewport = FindViewportByID(window->ViewportId);
if (window->Viewport == NULL && window->ViewportPos.x != FLT_MAX && window->ViewportPos.y != FLT_MAX)
window->Viewport = AddUpdateViewport(window, window->ID, window->ViewportPos, window->Size, ImGuiViewportFlags_NoDecoration);
window->Viewport = AddUpdateViewport(window, window->ID, window->ViewportPos, window->Size, ImGuiViewportFlags_None);
}
}
@@ -7671,11 +7675,11 @@ static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
bool leave_host_viewport = has_viewport && !own_viewport && !window->Viewport->GetRect().Contains(window->Rect());
bool move_from_own_viewport = has_viewport && own_viewport && !(window->Viewport->Flags & ImGuiViewportFlags_NoInputs);
if (!has_viewport || leave_host_viewport || move_from_own_viewport)
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_NoDecoration | ImGuiViewportFlags_NoFocusOnAppearing | ImGuiViewportFlags_NoInputs);
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_NoFocusOnAppearing | ImGuiViewportFlags_NoInputs);
}
else if (GetWindowAlwaysWantOwnViewport(window))
{
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_NoDecoration);
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_None);
}
// Mark window as allowed to protrude outside of its viewport and into the current monitor
@@ -7705,7 +7709,7 @@ static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
else if (!UpdateTryMergeWindowIntoHostViewport(window, g.Viewports[0])) // Merge?
{
// New viewport
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_NoDecoration | ImGuiViewportFlags_NoFocusOnAppearing);
window->Viewport = AddUpdateViewport(window, window->ID, window->Pos, window->Size, ImGuiViewportFlags_NoFocusOnAppearing);
}
}
else if ((flags & ImGuiWindowFlags_DockNodeHost) && (window->Appearing))
@@ -7723,16 +7727,15 @@ static void ImGui::UpdateSelectWindowViewport(ImGuiWindow* window)
// Update flags
window->ViewportOwned = (window == window->Viewport->Window);
if (window->ViewportOwned)
window->Viewport->Flags |= ImGuiViewportFlags_NoDecoration;
// If the OS window has a title bar, hide our imgui title bar
if (window->ViewportOwned && !(window->Viewport->Flags & ImGuiViewportFlags_NoDecoration))
window->Flags |= ImGuiWindowFlags_NoTitleBar;
//if (window->ViewportOwned && !(window->Viewport->Flags & ImGuiViewportFlags_NoDecoration))
// window->Flags |= ImGuiWindowFlags_NoTitleBar;
window->ViewportId = window->Viewport->ID;
}
// Called by imgui at the end of the main loop, after EndFrame()
void ImGui::UpdatePlatformWindows()
{
ImGuiContext& g = *GImGui;
@@ -7766,13 +7769,17 @@ void ImGui::UpdatePlatformWindows()
if (viewport->Size.x <= 0 || viewport->Size.y <= 0)
continue;
// Update viewport flags
// Update common viewport flags for owned viewports
if (viewport->Window != NULL)
{
bool topmost = (viewport->Window->Flags & ImGuiWindowFlags_Tooltip) != 0;
bool no_task_bar_icon = (g.IO.ConfigFlags & ImGuiConfigFlags_ViewportsNoTaskBarIcons) != 0 || (viewport->Window->Flags & (ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_Popup)) != 0;
viewport->Flags = topmost ? (viewport->Flags | ImGuiViewportFlags_TopMost) : (viewport->Flags & ~ImGuiViewportFlags_TopMost);
viewport->Flags = no_task_bar_icon ? (viewport->Flags | ImGuiViewportFlags_NoTaskBarIcon) : (viewport->Flags & ~ImGuiViewportFlags_NoTaskBarIcon);
ImGuiViewportFlags flags = viewport->Flags & ~(ImGuiViewportFlags_TopMost | ImGuiViewportFlags_NoTaskBarIcon | ImGuiViewportFlags_NoDecoration);
if (viewport->Window->Flags & ImGuiWindowFlags_Tooltip)
flags |= ImGuiViewportFlags_TopMost;
if ((g.IO.ConfigFlags & ImGuiConfigFlags_ViewportsNoTaskBarIcon) != 0 || (viewport->Window->Flags & (ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_Popup)) != 0)
flags |= ImGuiViewportFlags_NoTaskBarIcon;
if ((g.IO.ConfigFlags & ImGuiConfigFlags_ViewportsDecoration) == 0 || (viewport->Window->Flags & (ImGuiWindowFlags_ChildMenu | ImGuiWindowFlags_Tooltip | ImGuiWindowFlags_Popup)) != 0)
flags |= ImGuiViewportFlags_NoDecoration;
viewport->Flags = flags;
}
// Create window

18
imgui.h
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@@ -954,10 +954,11 @@ enum ImGuiConfigFlags_
// [BETA] Viewports
ImGuiConfigFlags_ViewportsEnable = 1 << 10, // Viewport enable flags (require both ImGuiConfigFlags_PlatformHasViewports + ImGuiConfigFlags_RendererHasViewports set by the respective back-ends)
ImGuiConfigFlags_ViewportsNoTaskBarIcons= 1 << 11, // Disable task bars icons for all secondary viewports (will set ImGuiViewportFlags_NoTaskBarIcon on them)
ImGuiConfigFlags_ViewportsNoTaskBarIcon = 1 << 11, // Disable task bars icons for all secondary viewports (will set ImGuiViewportFlags_NoTaskBarIcon on them)
ImGuiConfigFlags_ViewportsNoMerge = 1 << 12, // All floating windows will always create their own viewport and platform window.
ImGuiConfigFlags_DpiEnableScaleViewports= 1 << 13, // FIXME-DPI: Reposition and resize imgui windows when the DpiScale of a viewport changed (mostly useful for the main viewport hosting other window). Note that resizing the main window itself is up to your application.
ImGuiConfigFlags_DpiEnableScaleFonts = 1 << 14, // FIXME-DPI: Request bitmap-scaled fonts to match DpiScale. This is a very low-quality workaround. The correct way to handle DPI is _currently_ to replace the atlas and/or fonts in the Platform_OnChangedViewport callback, but this is all early work in progress.
ImGuiConfigFlags_ViewportsDecoration = 1 << 13, // FIXME [Broken] Enable platform decoration for all secondary viewports (will not set ImGuiViewportFlags_NoDecoration on them). This currently doesn't behave well in Windows because 1) By default the new window animation get in the way of our transitions, 2) It enable a minimum window size which tends to breaks resizing. You can workaround the later by setting style.WindowMinSize to a bigger value.
ImGuiConfigFlags_DpiEnableScaleViewports= 1 << 14, // FIXME-DPI: Reposition and resize imgui windows when the DpiScale of a viewport changed (mostly useful for the main viewport hosting other window). Note that resizing the main window itself is up to your application.
ImGuiConfigFlags_DpiEnableScaleFonts = 1 << 15, // FIXME-DPI: Request bitmap-scaled fonts to match DpiScale. This is a very low-quality workaround. The correct way to handle DPI is _currently_ to replace the atlas and/or fonts in the Platform_OnChangedViewport callback, but this is all early work in progress.
// User storage (to allow your back-end/engine to communicate to code that may be shared between multiple projects. Those flags are not used by core ImGui)
ImGuiConfigFlags_IsSRGB = 1 << 20, // Application is SRGB-aware.
@@ -1219,7 +1220,7 @@ struct ImGuiIO
// Miscellaneous configuration options
bool MouseDrawCursor; // = false // Request ImGui to draw a mouse cursor for you (if you are on a platform without a mouse cursor). Cannot be easily renamed to 'io.ConfigXXX' because this is frequently used by back-end implementations.
bool ConfigDockingWithShift; // = true // Enable docking with holding Shift key (reduce visual noise, allows dropping in wider space)
bool ConfigDockingWithShift; // = false // Enable docking with holding Shift key (reduce visual noise, allows dropping in wider space)
bool ConfigMacOSXBehaviors; // = defined(__APPLE__) // OS X style: Text editing cursor movement using Alt instead of Ctrl, Shortcuts using Cmd/Super instead of Ctrl, Line/Text Start and End using Cmd+Arrows instead of Home/End, Double click selects by word instead of selecting whole text, Multi-selection in lists uses Cmd/Super instead of Ctrl (was called io.OptMacOSXBehaviors prior to 1.63)
bool ConfigInputTextCursorBlink; // = true // Set to false to disable blinking cursor, for users who consider it distracting. (was called: io.OptCursorBlink prior to 1.63)
bool ConfigResizeWindowsFromEdges; // = true // [BETA] Enable resizing of windows from their edges and from the lower-left corner. This requires (io.BackendFlags & ImGuiBackendFlags_HasMouseCursors) because it needs mouse cursor feedback. (This used to be the ImGuiWindowFlags_ResizeFromAnySide flag)
@@ -2157,7 +2158,8 @@ struct ImGuiPlatformIO
// Flags stored in ImGuiViewport::Flags, giving indications to the platform back-ends
enum ImGuiViewportFlags_
{
ImGuiViewportFlags_NoDecoration = 1 << 0, // Platform Window: Disable platform title bar, borders, etc.
ImGuiViewportFlags_None = 0,
ImGuiViewportFlags_NoDecoration = 1 << 0, // Platform Window: Disable platform decorations: title bar, borders, etc.
ImGuiViewportFlags_NoFocusOnAppearing = 1 << 1, // Platform Window: Don't take focus when created.
ImGuiViewportFlags_NoInputs = 1 << 2, // Platform Window: Make mouse pass through so we can drag this window while peaking behind it.
ImGuiViewportFlags_NoTaskBarIcon = 1 << 3, // Platform Window: Disable platform task bar icon (for popups, menus, or all windows if ImGuiConfigFlags_ViewportsNoTaskBarIcons if set)
@@ -2177,9 +2179,9 @@ struct ImGuiViewport
void* PlatformUserData; // void* to hold custom data structure for the platform (e.g. windowing info, render context)
void* PlatformHandle; // void* for FindViewportByPlatformHandle(). (e.g. suggested to use natural platform handle such as HWND, GlfwWindow*, SDL_Window*)
bool PlatformRequestClose; // Platform window requested closure
bool PlatformRequestMove; // Platform window requested move (e.g. window was moved by the OS / host window manager)
bool PlatformRequestResize; // Platform window requested resize (e.g. window was resize by the OS / host window manager)
bool PlatformRequestClose; // Platform window requested closure (e.g. window was moved by the OS / host window manager, e.g. pressing ALT-F4)
bool PlatformRequestMove; // Platform window requested move (e.g. window was moved by the OS / host window manager, authoritative position will be OS window position)
bool PlatformRequestResize; // Platform window requested resize (e.g. window was resized by the OS / host window manager, authoritative size will be OS window size)
void* RendererUserData; // void* to hold custom data structure for the renderer (e.g. swap chain, frame-buffers etc.)
ImGuiViewport() { ID = 0; Flags = 0; DpiScale = 0.0f; DrawData = NULL; PlatformUserData = PlatformHandle = NULL; PlatformRequestClose = PlatformRequestMove = PlatformRequestResize = false; RendererUserData = NULL; }

4
imgui_demo.cpp
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@@ -338,8 +338,10 @@ void ImGui::ShowDemoWindow(bool* p_open)
ImGui::CheckboxFlags("io.ConfigFlags: ViewportsEnable", (unsigned int *)&io.ConfigFlags, ImGuiConfigFlags_ViewportsEnable);
ImGui::SameLine(); ShowHelpMarker("Toggling this at runtime is normally unsupported (it will offset your windows).");
ImGui::CheckboxFlags("io.ConfigFlags: ViewportsNoTaskBarIcons", (unsigned int *)&io.ConfigFlags, ImGuiConfigFlags_ViewportsNoTaskBarIcons);
ImGui::CheckboxFlags("io.ConfigFlags: ViewportsNoTaskBarIcon", (unsigned int *)&io.ConfigFlags, ImGuiConfigFlags_ViewportsNoTaskBarIcon);
ImGui::SameLine(); ShowHelpMarker("Toggling this at runtime is normally unsupported (most platform back-ends won't refresh the task bar icon state right away).");
ImGui::CheckboxFlags("io.ConfigFlags: ViewportsDecoration", (unsigned int *)&io.ConfigFlags, ImGuiConfigFlags_ViewportsDecoration);
ImGui::SameLine(); ShowHelpMarker("Toggling this at runtime is normally unsupported (most platform back-ends won't refresh the decoration right away).");
ImGui::CheckboxFlags("io.ConfigFlags: ViewportsNoMerge", (unsigned int *)&io.ConfigFlags, ImGuiConfigFlags_ViewportsNoMerge);
ImGui::SameLine(); ShowHelpMarker("All floating windows will always create their own viewport and platform window.");