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Internals: storing WindowsHoverPadding in context for external access. + Docs update binaries

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ocornut 2021-03-31 15:53:30 +02:00
parent 45c45d2506
commit 3c7177c6a7
3 changed files with 9 additions and 7 deletions
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2
docs/README.md
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@ -105,7 +105,7 @@ Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcas
![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png)
You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let us know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
- [imgui-demo-binaries-20200918.zip](https://www.dearimgui.org/binaries/imgui-demo-binaries-20200918.zip) (Windows, 1.78 WIP, built 2020/09/18, master branch) or [older demo binaries](https://www.dearimgui.org/binaries).
- [imgui-demo-binaries-20210331.zip](https://www.dearimgui.org/binaries/imgui-demo-binaries-20210331.zip) (Windows, 1.83 WIP, built 2021/03/31, master branch) or [older demo binaries](https://www.dearimgui.org/binaries).
The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your style with `style.ScaleAllSizes()` (see [FAQ](https://www.dearimgui.org/faq)).

13
imgui.cpp
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@ -858,7 +858,7 @@ static const float NAV_WINDOWING_HIGHLIGHT_DELAY = 0.20f; // Time
static const float NAV_WINDOWING_LIST_APPEAR_DELAY = 0.15f; // Time before the window list starts to appear
// Window resizing from edges (when io.ConfigWindowsResizeFromEdges = true and ImGuiBackendFlags_HasMouseCursors is set in io.BackendFlags by backend)
static const float WINDOWS_RESIZE_FROM_EDGES_HALF_THICKNESS = 4.0f; // Extend outside and inside windows. Affect FindHoveredWindow().
static const float WINDOWS_HOVER_PADDING = 4.0f; // Extend outside window for hovering/resizing (maxxed with TouchPadding) and inside windows for borders. Affect FindHoveredWindow().
static const float WINDOWS_RESIZE_FROM_EDGES_FEEDBACK_TIMER = 0.04f; // Reduce visual noise by only highlighting the border after a certain time.
static const float WINDOWS_MOUSE_WHEEL_SCROLL_LOCK_TIMER = 2.00f; // Lock scrolled window (so it doesn't pick child windows that are scrolling through) for a certain time, unless mouse moved.
@ -3810,6 +3810,7 @@ void ImGui::UpdateTabFocus()
void ImGui::UpdateHoveredWindowAndCaptureFlags()
{
ImGuiContext& g = *GImGui;
g.WindowsHoverPadding = ImMax(g.Style.TouchExtraPadding, ImVec2(WINDOWS_HOVER_PADDING, WINDOWS_HOVER_PADDING));
// Find the window hovered by mouse:
// - Child windows can extend beyond the limit of their parent so we need to derive HoveredRootWindow from HoveredWindow.
@ -4539,7 +4540,7 @@ static void FindHoveredWindow()
hovered_window = g.MovingWindow;
ImVec2 padding_regular = g.Style.TouchExtraPadding;
ImVec2 padding_for_resize_from_edges = g.IO.ConfigWindowsResizeFromEdges ? ImMax(g.Style.TouchExtraPadding, ImVec2(WINDOWS_RESIZE_FROM_EDGES_HALF_THICKNESS, WINDOWS_RESIZE_FROM_EDGES_HALF_THICKNESS)) : padding_regular;
ImVec2 padding_for_resize = g.IO.ConfigWindowsResizeFromEdges ? g.WindowsHoverPadding : padding_regular;
for (int i = g.Windows.Size - 1; i >= 0; i--)
{
ImGuiWindow* window = g.Windows[i];
@ -4553,7 +4554,7 @@ static void FindHoveredWindow()
if (window->Flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_AlwaysAutoResize))
bb.Expand(padding_regular);
else
bb.Expand(padding_for_resize_from_edges);
bb.Expand(padding_for_resize);
if (!bb.Contains(g.IO.MousePos))
continue;
@ -5350,7 +5351,7 @@ static bool ImGui::UpdateWindowManualResize(ImGuiWindow* window, const ImVec2& s
const int resize_border_count = g.IO.ConfigWindowsResizeFromEdges ? 4 : 0;
const float grip_draw_size = IM_FLOOR(ImMax(g.FontSize * 1.35f, window->WindowRounding + 1.0f + g.FontSize * 0.2f));
const float grip_hover_inner_size = IM_FLOOR(grip_draw_size * 0.75f);
const float grip_hover_outer_size = g.IO.ConfigWindowsResizeFromEdges ? WINDOWS_RESIZE_FROM_EDGES_HALF_THICKNESS : 0.0f;
const float grip_hover_outer_size = g.IO.ConfigWindowsResizeFromEdges ? WINDOWS_HOVER_PADDING : 0.0f;
ImVec2 pos_target(FLT_MAX, FLT_MAX);
ImVec2 size_target(FLT_MAX, FLT_MAX);
@ -5404,7 +5405,7 @@ static bool ImGui::UpdateWindowManualResize(ImGuiWindow* window, const ImVec2& s
const ImGuiAxis axis = (border_n == ImGuiDir_Left || border_n == ImGuiDir_Right) ? ImGuiAxis_X : ImGuiAxis_Y;
bool hovered, held;
ImRect border_rect = GetResizeBorderRect(window, border_n, grip_hover_inner_size, WINDOWS_RESIZE_FROM_EDGES_HALF_THICKNESS);
ImRect border_rect = GetResizeBorderRect(window, border_n, grip_hover_inner_size, WINDOWS_HOVER_PADDING);
ImGuiID border_id = window->GetID(border_n + 4); // == GetWindowResizeBorderID()
ButtonBehavior(border_rect, border_id, &hovered, &held, ImGuiButtonFlags_FlattenChildren);
//GetForegroundDrawLists(window)->AddRect(border_rect.Min, border_rect.Max, IM_COL32(255, 255, 0, 255));
@ -5419,7 +5420,7 @@ static bool ImGui::UpdateWindowManualResize(ImGuiWindow* window, const ImVec2& s
ImVec2 clamp_min(border_n == ImGuiDir_Right ? visibility_rect.Min.x : -FLT_MAX, border_n == ImGuiDir_Down ? visibility_rect.Min.y : -FLT_MAX);
ImVec2 clamp_max(border_n == ImGuiDir_Left ? visibility_rect.Max.x : +FLT_MAX, border_n == ImGuiDir_Up ? visibility_rect.Max.y : +FLT_MAX);
ImVec2 border_target = window->Pos;
border_target[axis] = g.IO.MousePos[axis] - g.ActiveIdClickOffset[axis] + WINDOWS_RESIZE_FROM_EDGES_HALF_THICKNESS;
border_target[axis] = g.IO.MousePos[axis] - g.ActiveIdClickOffset[axis] + WINDOWS_HOVER_PADDING;
border_target = ImClamp(border_target, clamp_min, clamp_max);
CalcResizePosSizeFromAnyCorner(window, border_target, ImMin(def.SegmentN1, def.SegmentN2), &pos_target, &size_target);
}

1
imgui_internal.h
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@ -1323,6 +1323,7 @@ struct ImGuiContext
ImVector<ImGuiWindow*> CurrentWindowStack;
ImGuiStorage WindowsById; // Map window's ImGuiID to ImGuiWindow*
int WindowsActiveCount; // Number of unique windows submitted by frame
ImVec2 WindowsHoverPadding; // Padding around resizable windows for which hovering on counts as hovering the window == ImMax(style.TouchExtraPadding, WINDOWS_HOVER_PADDING)
ImGuiWindow* CurrentWindow; // Window being drawn into
ImGuiWindow* HoveredWindow; // Window the mouse is hovering. Will typically catch mouse inputs.
ImGuiWindow* HoveredWindowUnderMovingWindow; // Hovered window ignoring MovingWindow. Only set if MovingWindow is set.