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Internal: Scrollbar: Further sane simplification (using InnerMainRect instead of duplicating calculations).

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omar
2019-05-09 19:30:13 +02:00
parent 37174c85e2
commit 39eeda0227
2 changed files with 17 additions and 25 deletions
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1
docs/CHANGELOG.txt
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@@ -39,6 +39,7 @@ Other Changes:
- Columns: Fixed Selectable with SpanAllColumns flag from creating an extraneous draw command. (#125)
- Separator: Revert 1.70 "Declare its thickness (1.0f) to the layout" change. It's not incorrect
but it breaks existing some layout patterns. Will return back to it when we expose Separator flags.
- Scrollbar: Very minor bounding box adjustment to cope with various border size.
-----------------------------------------------------------------------

41
imgui_widgets.cpp
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@@ -875,36 +875,27 @@ void ImGui::Scrollbar(ImGuiAxis axis)
ImGuiContext& g = *GImGui;
ImGuiWindow* window = g.CurrentWindow;
const bool horizontal = (axis == ImGuiAxis_X);
const ImGuiStyle& style = g.Style;
const ImGuiID id = GetScrollbarID(window, axis);
KeepAliveID(id);
// Calculate our bounding box (FIXME: This is messy, should be made simpler using e.g. InnerRect/WorkRect data).
// Calculate scrollbar bounding box
const ImRect outer_rect = window->Rect();
const float other_scrollbar_size = window->ScrollbarSizes[axis];
const ImRect win_rect = window->Rect();
const float border_size = window->WindowBorderSize;
ImRect bb = horizontal
? ImRect(win_rect.Min.x + border_size, win_rect.Max.y - style.ScrollbarSize, win_rect.Max.x - other_scrollbar_size - border_size, win_rect.Max.y - border_size)
: ImRect(win_rect.Max.x - style.ScrollbarSize, win_rect.Min.y + border_size, win_rect.Max.x - border_size, win_rect.Max.y - other_scrollbar_size - border_size);
bb.Min.x = ImMax(win_rect.Min.x, bb.Min.x); // Handle case where the host rectangle is smaller than the scrollbar
bb.Min.y = ImMax(win_rect.Min.y, bb.Min.y);
if (!horizontal)
bb.Min.y += window->TitleBarHeight() + ((window->Flags & ImGuiWindowFlags_MenuBar) ? window->MenuBarHeight() : 0.0f); // FIXME: InnerRect?
// Select rounding
ImDrawCornerFlags rounding_corners;
if (horizontal)
rounding_corners = ImDrawCornerFlags_BotLeft;
ImDrawCornerFlags rounding_corners = (other_scrollbar_size <= 0.0f) ? ImDrawCornerFlags_BotRight : 0;
ImRect bb;
if (axis == ImGuiAxis_X)
{
bb.Min = ImVec2(window->InnerMainRect.Min.x, window->InnerMainRect.Max.y);
bb.Max = ImVec2(window->InnerMainRect.Max.x, outer_rect.Max.y - window->WindowBorderSize);
rounding_corners |= ImDrawCornerFlags_BotLeft;
}
else
rounding_corners = ((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0;
if (other_scrollbar_size <= 0.0f)
rounding_corners |= ImDrawCornerFlags_BotRight;
if (horizontal)
ScrollbarEx(bb, id, axis, &window->Scroll.x, window->SizeFull.x - other_scrollbar_size, window->SizeContents.x, rounding_corners);
else
ScrollbarEx(bb, id, axis, &window->Scroll.y, window->SizeFull.y - other_scrollbar_size, window->SizeContents.y, rounding_corners);
{
bb.Min = ImVec2(window->InnerMainRect.Max.x, window->InnerMainRect.Min.y);
bb.Max = ImVec2(outer_rect.Max.x - window->WindowBorderSize, window->InnerMainRect.Max.y);
rounding_corners |= ((window->Flags & ImGuiWindowFlags_NoTitleBar) && !(window->Flags & ImGuiWindowFlags_MenuBar)) ? ImDrawCornerFlags_TopRight : 0;
}
ScrollbarEx(bb, id, axis, &window->Scroll[axis], window->SizeFull[axis] - other_scrollbar_size, window->SizeContents[axis], rounding_corners);
}
void ImGui::Image(ImTextureID user_texture_id, const ImVec2& size, const ImVec2& uv0, const ImVec2& uv1, const ImVec4& tint_col, const ImVec4& border_col)