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Docking: Rework size allocation to allow user code to override node sizes. Not all edge cases will be properly handled but this is a step toward toolbar emitting size constraints.

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This commit is contained in:
omar 2020-06-30 18:53:13 +02:00
parent 2b9d88196e
commit 4bdbea8375
1 changed files with 11 additions and 4 deletions
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15
imgui.cpp
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@ -13790,20 +13790,27 @@ void ImGui::DockNodeTreeUpdatePosSize(ImGuiDockNode* node, ImVec2 pos, ImVec2 si
const float size_min_each = ImFloor(ImMin(size_avail, g.Style.WindowMinSize[axis] * 2.0f) * 0.5f); const float size_min_each = ImFloor(ImMin(size_avail, g.Style.WindowMinSize[axis] * 2.0f) * 0.5f);
// 2) Process locked absolute size (during a splitter resize we preserve the child of nodes not touching the splitter edge) // 2) Process locked absolute size (during a splitter resize we preserve the child of nodes not touching the splitter edge)
IM_ASSERT(!(child_0->WantLockSizeOnce && child_1->WantLockSizeOnce)); if (child_0->WantLockSizeOnce && !child_1->WantLockSizeOnce)
if (child_0->WantLockSizeOnce)
{ {
child_0_size[axis] = child_0->SizeRef[axis] = ImMin(size_avail - 1.0f, child_0->Size[axis]); child_0_size[axis] = child_0->SizeRef[axis] = ImMin(size_avail - 1.0f, child_0->Size[axis]);
child_1_size[axis] = child_1->SizeRef[axis] = (size_avail - child_0_size[axis]); child_1_size[axis] = child_1->SizeRef[axis] = (size_avail - child_0_size[axis]);
IM_ASSERT(child_0->SizeRef[axis] > 0.0f && child_1->SizeRef[axis] > 0.0f); IM_ASSERT(child_0->SizeRef[axis] > 0.0f && child_1->SizeRef[axis] > 0.0f);
} }
else if (child_1->WantLockSizeOnce) else if (child_1->WantLockSizeOnce && !child_0->WantLockSizeOnce)
{ {
child_1_size[axis] = child_1->SizeRef[axis] = ImMin(size_avail - 1.0f, child_1->Size[axis]); child_1_size[axis] = child_1->SizeRef[axis] = ImMin(size_avail - 1.0f, child_1->Size[axis]);
child_0_size[axis] = child_0->SizeRef[axis] = (size_avail - child_1_size[axis]); child_0_size[axis] = child_0->SizeRef[axis] = (size_avail - child_1_size[axis]);
IM_ASSERT(child_0->SizeRef[axis] > 0.0f && child_1->SizeRef[axis] > 0.0f); IM_ASSERT(child_0->SizeRef[axis] > 0.0f && child_1->SizeRef[axis] > 0.0f);
} }
else if (child_0->WantLockSizeOnce && child_1->WantLockSizeOnce)
{
// FIXME-DOCK: We cannot honor the requested size, so apply ratio.
// Currently this path will only be taken if code programmatically sets WantLockSizeOnce
float ratio_0 = child_0_size[axis] / (child_0_size[axis] + child_1_size[axis]);
child_0_size[axis] = child_0->SizeRef[axis] = ImFloor(size_avail * ratio_0);
child_1_size[axis] = child_1->SizeRef[axis] = (size_avail - child_0_size[axis]);
IM_ASSERT(child_0->SizeRef[axis] > 0.0f && child_1->SizeRef[axis] > 0.0f);
}
// 3) If one window is the central node (~ use remaining space, should be made explicit!), use explicit size from the other, and remainder for the central node // 3) If one window is the central node (~ use remaining space, should be made explicit!), use explicit size from the other, and remainder for the central node
else if (child_1->IsCentralNode() && child_0->SizeRef[axis] != 0.0f) else if (child_1->IsCentralNode() && child_0->SizeRef[axis] != 0.0f)